^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * Front panel driver for Linux
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) * Copyright (C) 2000-2008, Willy Tarreau <w@1wt.eu>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * Copyright (C) 2016-2017 Glider bvba
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) * This code drives an LCD module (/dev/lcd), and a keypad (/dev/keypad)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) * connected to a parallel printer port.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) * The LCD module may either be an HD44780-like 8-bit parallel LCD, or a 1-bit
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) * serial module compatible with Samsung's KS0074. The pins may be connected in
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) * any combination, everything is programmable.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) * The keypad consists in a matrix of push buttons connecting input pins to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) * data output pins or to the ground. The combinations have to be hard-coded
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) * in the driver, though several profiles exist and adding new ones is easy.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) * Several profiles are provided for commonly found LCD+keypad modules on the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) * market, such as those found in Nexcom's appliances.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) * FIXME:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) * - the initialization/deinitialization process is very dirty and should
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) * be rewritten. It may even be buggy.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) * TODO:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) * - document 24 keys keyboard (3 rows of 8 cols, 32 diodes + 2 inputs)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) * - make the LCD a part of a virtual screen of Vx*Vy
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) * - make the inputs list smp-safe
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) * - change the keyboard to a double mapping : signals -> key_id -> values
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) * so that applications can change values without knowing signals
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) #include <linux/types.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) #include <linux/errno.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) #include <linux/signal.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) #include <linux/sched.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) #include <linux/spinlock.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) #include <linux/interrupt.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) #include <linux/miscdevice.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) #include <linux/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) #include <linux/ioport.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) #include <linux/fcntl.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) #include <linux/init.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) #include <linux/delay.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) #include <linux/kernel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) #include <linux/ctype.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) #include <linux/parport.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) #include <linux/list.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) #include <linux/io.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) #include <linux/uaccess.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) #include "charlcd.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) #define LCD_MAXBYTES 256 /* max burst write */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) #define KEYPAD_BUFFER 64
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) /* poll the keyboard this every second */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) #define INPUT_POLL_TIME (HZ / 50)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) /* a key starts to repeat after this times INPUT_POLL_TIME */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) #define KEYPAD_REP_START (10)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) /* a key repeats this times INPUT_POLL_TIME */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) #define KEYPAD_REP_DELAY (2)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) /* converts an r_str() input to an active high, bits string : 000BAOSE */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) #define PNL_PINPUT(a) ((((unsigned char)(a)) ^ 0x7F) >> 3)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) #define PNL_PBUSY 0x80 /* inverted input, active low */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) #define PNL_PACK 0x40 /* direct input, active low */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) #define PNL_POUTPA 0x20 /* direct input, active high */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) #define PNL_PSELECD 0x10 /* direct input, active high */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) #define PNL_PERRORP 0x08 /* direct input, active low */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) #define PNL_PBIDIR 0x20 /* bi-directional ports */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) /* high to read data in or-ed with data out */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) #define PNL_PINTEN 0x10
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) #define PNL_PSELECP 0x08 /* inverted output, active low */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) #define PNL_PINITP 0x04 /* direct output, active low */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) #define PNL_PAUTOLF 0x02 /* inverted output, active low */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) #define PNL_PSTROBE 0x01 /* inverted output */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) #define PNL_PD0 0x01
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) #define PNL_PD1 0x02
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) #define PNL_PD2 0x04
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) #define PNL_PD3 0x08
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) #define PNL_PD4 0x10
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) #define PNL_PD5 0x20
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) #define PNL_PD6 0x40
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) #define PNL_PD7 0x80
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) #define PIN_NONE 0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) #define PIN_STROBE 1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) #define PIN_D0 2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) #define PIN_D1 3
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) #define PIN_D2 4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) #define PIN_D3 5
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) #define PIN_D4 6
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) #define PIN_D5 7
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) #define PIN_D6 8
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) #define PIN_D7 9
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) #define PIN_AUTOLF 14
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) #define PIN_INITP 16
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) #define PIN_SELECP 17
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) #define PIN_NOT_SET 127
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) #define NOT_SET -1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) /* macros to simplify use of the parallel port */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) #define r_ctr(x) (parport_read_control((x)->port))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) #define r_dtr(x) (parport_read_data((x)->port))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) #define r_str(x) (parport_read_status((x)->port))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) #define w_ctr(x, y) (parport_write_control((x)->port, (y)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) #define w_dtr(x, y) (parport_write_data((x)->port, (y)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) /* this defines which bits are to be used and which ones to be ignored */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) /* logical or of the output bits involved in the scan matrix */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) static __u8 scan_mask_o;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) /* logical or of the input bits involved in the scan matrix */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) static __u8 scan_mask_i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) enum input_type {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) INPUT_TYPE_STD,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) INPUT_TYPE_KBD,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) enum input_state {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) INPUT_ST_LOW,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) INPUT_ST_RISING,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) INPUT_ST_HIGH,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) INPUT_ST_FALLING,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) struct logical_input {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) struct list_head list;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) __u64 mask;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) __u64 value;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) enum input_type type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) enum input_state state;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) __u8 rise_time, fall_time;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) __u8 rise_timer, fall_timer, high_timer;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) union {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) struct { /* valid when type == INPUT_TYPE_STD */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) void (*press_fct)(int);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) void (*release_fct)(int);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) int press_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) int release_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) } std;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) struct { /* valid when type == INPUT_TYPE_KBD */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) char press_str[sizeof(void *) + sizeof(int)] __nonstring;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) char repeat_str[sizeof(void *) + sizeof(int)] __nonstring;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) char release_str[sizeof(void *) + sizeof(int)] __nonstring;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) } kbd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) } u;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) static LIST_HEAD(logical_inputs); /* list of all defined logical inputs */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) /* physical contacts history
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) * Physical contacts are a 45 bits string of 9 groups of 5 bits each.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) * The 8 lower groups correspond to output bits 0 to 7, and the 9th group
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) * corresponds to the ground.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) * Within each group, bits are stored in the same order as read on the port :
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) * BAPSE (busy=4, ack=3, paper empty=2, select=1, error=0).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) * So, each __u64 is represented like this :
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) * 0000000000000000000BAPSEBAPSEBAPSEBAPSEBAPSEBAPSEBAPSEBAPSEBAPSE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) * <-----unused------><gnd><d07><d06><d05><d04><d03><d02><d01><d00>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) /* what has just been read from the I/O ports */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) static __u64 phys_read;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) /* previous phys_read */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) static __u64 phys_read_prev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) /* stabilized phys_read (phys_read|phys_read_prev) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) static __u64 phys_curr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) /* previous phys_curr */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) static __u64 phys_prev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) /* 0 means that at least one logical signal needs be computed */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) static char inputs_stable;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) /* these variables are specific to the keypad */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) static struct {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) bool enabled;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) } keypad;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) static char keypad_buffer[KEYPAD_BUFFER];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) static int keypad_buflen;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) static int keypad_start;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) static char keypressed;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) static wait_queue_head_t keypad_read_wait;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) /* lcd-specific variables */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) static struct {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) bool enabled;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) bool initialized;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) int charset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) int proto;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) /* TODO: use union here? */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) struct {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) int e;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) int rs;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) int rw;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) int cl;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) int da;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) int bl;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) } pins;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) struct charlcd *charlcd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) } lcd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) /* Needed only for init */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) static int selected_lcd_type = NOT_SET;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) * Bit masks to convert LCD signals to parallel port outputs.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) * _d_ are values for data port, _c_ are for control port.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) * [0] = signal OFF, [1] = signal ON, [2] = mask
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) #define BIT_CLR 0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) #define BIT_SET 1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) #define BIT_MSK 2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) #define BIT_STATES 3
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) * one entry for each bit on the LCD
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) #define LCD_BIT_E 0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) #define LCD_BIT_RS 1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) #define LCD_BIT_RW 2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) #define LCD_BIT_BL 3
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) #define LCD_BIT_CL 4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) #define LCD_BIT_DA 5
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) #define LCD_BITS 6
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) * each bit can be either connected to a DATA or CTRL port
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) #define LCD_PORT_C 0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) #define LCD_PORT_D 1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) #define LCD_PORTS 2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) static unsigned char lcd_bits[LCD_PORTS][LCD_BITS][BIT_STATES];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) * LCD protocols
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) #define LCD_PROTO_PARALLEL 0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) #define LCD_PROTO_SERIAL 1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) #define LCD_PROTO_TI_DA8XX_LCD 2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) * LCD character sets
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) #define LCD_CHARSET_NORMAL 0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) #define LCD_CHARSET_KS0074 1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) * LCD types
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) #define LCD_TYPE_NONE 0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) #define LCD_TYPE_CUSTOM 1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) #define LCD_TYPE_OLD 2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) #define LCD_TYPE_KS0074 3
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) #define LCD_TYPE_HANTRONIX 4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) #define LCD_TYPE_NEXCOM 5
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) * keypad types
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) #define KEYPAD_TYPE_NONE 0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) #define KEYPAD_TYPE_OLD 1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) #define KEYPAD_TYPE_NEW 2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) #define KEYPAD_TYPE_NEXCOM 3
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) * panel profiles
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) #define PANEL_PROFILE_CUSTOM 0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) #define PANEL_PROFILE_OLD 1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) #define PANEL_PROFILE_NEW 2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) #define PANEL_PROFILE_HANTRONIX 3
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) #define PANEL_PROFILE_NEXCOM 4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) #define PANEL_PROFILE_LARGE 5
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) * Construct custom config from the kernel's configuration
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) #define DEFAULT_PARPORT 0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) #define DEFAULT_PROFILE PANEL_PROFILE_LARGE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) #define DEFAULT_KEYPAD_TYPE KEYPAD_TYPE_OLD
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) #define DEFAULT_LCD_TYPE LCD_TYPE_OLD
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) #define DEFAULT_LCD_HEIGHT 2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) #define DEFAULT_LCD_WIDTH 40
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) #define DEFAULT_LCD_BWIDTH 40
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) #define DEFAULT_LCD_HWIDTH 64
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) #define DEFAULT_LCD_CHARSET LCD_CHARSET_NORMAL
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) #define DEFAULT_LCD_PROTO LCD_PROTO_PARALLEL
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) #define DEFAULT_LCD_PIN_E PIN_AUTOLF
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) #define DEFAULT_LCD_PIN_RS PIN_SELECP
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) #define DEFAULT_LCD_PIN_RW PIN_INITP
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) #define DEFAULT_LCD_PIN_SCL PIN_STROBE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) #define DEFAULT_LCD_PIN_SDA PIN_D0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) #define DEFAULT_LCD_PIN_BL PIN_NOT_SET
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) #ifdef CONFIG_PANEL_PARPORT
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) #undef DEFAULT_PARPORT
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) #define DEFAULT_PARPORT CONFIG_PANEL_PARPORT
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) #ifdef CONFIG_PANEL_PROFILE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) #undef DEFAULT_PROFILE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) #define DEFAULT_PROFILE CONFIG_PANEL_PROFILE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) #if DEFAULT_PROFILE == 0 /* custom */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) #ifdef CONFIG_PANEL_KEYPAD
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) #undef DEFAULT_KEYPAD_TYPE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) #define DEFAULT_KEYPAD_TYPE CONFIG_PANEL_KEYPAD
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) #ifdef CONFIG_PANEL_LCD
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) #undef DEFAULT_LCD_TYPE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) #define DEFAULT_LCD_TYPE CONFIG_PANEL_LCD
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) #ifdef CONFIG_PANEL_LCD_HEIGHT
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) #undef DEFAULT_LCD_HEIGHT
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) #define DEFAULT_LCD_HEIGHT CONFIG_PANEL_LCD_HEIGHT
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) #ifdef CONFIG_PANEL_LCD_WIDTH
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) #undef DEFAULT_LCD_WIDTH
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) #define DEFAULT_LCD_WIDTH CONFIG_PANEL_LCD_WIDTH
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) #ifdef CONFIG_PANEL_LCD_BWIDTH
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) #undef DEFAULT_LCD_BWIDTH
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) #define DEFAULT_LCD_BWIDTH CONFIG_PANEL_LCD_BWIDTH
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) #ifdef CONFIG_PANEL_LCD_HWIDTH
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350) #undef DEFAULT_LCD_HWIDTH
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) #define DEFAULT_LCD_HWIDTH CONFIG_PANEL_LCD_HWIDTH
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354) #ifdef CONFIG_PANEL_LCD_CHARSET
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) #undef DEFAULT_LCD_CHARSET
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) #define DEFAULT_LCD_CHARSET CONFIG_PANEL_LCD_CHARSET
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359) #ifdef CONFIG_PANEL_LCD_PROTO
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360) #undef DEFAULT_LCD_PROTO
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) #define DEFAULT_LCD_PROTO CONFIG_PANEL_LCD_PROTO
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364) #ifdef CONFIG_PANEL_LCD_PIN_E
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365) #undef DEFAULT_LCD_PIN_E
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) #define DEFAULT_LCD_PIN_E CONFIG_PANEL_LCD_PIN_E
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369) #ifdef CONFIG_PANEL_LCD_PIN_RS
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) #undef DEFAULT_LCD_PIN_RS
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371) #define DEFAULT_LCD_PIN_RS CONFIG_PANEL_LCD_PIN_RS
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374) #ifdef CONFIG_PANEL_LCD_PIN_RW
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) #undef DEFAULT_LCD_PIN_RW
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376) #define DEFAULT_LCD_PIN_RW CONFIG_PANEL_LCD_PIN_RW
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379) #ifdef CONFIG_PANEL_LCD_PIN_SCL
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380) #undef DEFAULT_LCD_PIN_SCL
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381) #define DEFAULT_LCD_PIN_SCL CONFIG_PANEL_LCD_PIN_SCL
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384) #ifdef CONFIG_PANEL_LCD_PIN_SDA
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385) #undef DEFAULT_LCD_PIN_SDA
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386) #define DEFAULT_LCD_PIN_SDA CONFIG_PANEL_LCD_PIN_SDA
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389) #ifdef CONFIG_PANEL_LCD_PIN_BL
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390) #undef DEFAULT_LCD_PIN_BL
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391) #define DEFAULT_LCD_PIN_BL CONFIG_PANEL_LCD_PIN_BL
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394) #endif /* DEFAULT_PROFILE == 0 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396) /* global variables */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398) /* Device single-open policy control */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399) static atomic_t keypad_available = ATOMIC_INIT(1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401) static struct pardevice *pprt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403) static int keypad_initialized;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405) static DEFINE_SPINLOCK(pprt_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406) static struct timer_list scan_timer;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408) MODULE_DESCRIPTION("Generic parallel port LCD/Keypad driver");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 410) static int parport = DEFAULT_PARPORT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 411) module_param(parport, int, 0000);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 412) MODULE_PARM_DESC(parport, "Parallel port index (0=lpt1, 1=lpt2, ...)");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 413)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 414) static int profile = DEFAULT_PROFILE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 415) module_param(profile, int, 0000);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 416) MODULE_PARM_DESC(profile,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 417) "1=16x2 old kp; 2=serial 16x2, new kp; 3=16x2 hantronix; "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 418) "4=16x2 nexcom; default=40x2, old kp");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 419)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 420) static int keypad_type = NOT_SET;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 421) module_param(keypad_type, int, 0000);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 422) MODULE_PARM_DESC(keypad_type,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 423) "Keypad type: 0=none, 1=old 6 keys, 2=new 6+1 keys, 3=nexcom 4 keys");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 424)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 425) static int lcd_type = NOT_SET;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 426) module_param(lcd_type, int, 0000);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 427) MODULE_PARM_DESC(lcd_type,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 428) "LCD type: 0=none, 1=compiled-in, 2=old, 3=serial ks0074, 4=hantronix, 5=nexcom");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 429)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 430) static int lcd_height = NOT_SET;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 431) module_param(lcd_height, int, 0000);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 432) MODULE_PARM_DESC(lcd_height, "Number of lines on the LCD");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 433)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 434) static int lcd_width = NOT_SET;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 435) module_param(lcd_width, int, 0000);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 436) MODULE_PARM_DESC(lcd_width, "Number of columns on the LCD");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 437)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 438) static int lcd_bwidth = NOT_SET; /* internal buffer width (usually 40) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 439) module_param(lcd_bwidth, int, 0000);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 440) MODULE_PARM_DESC(lcd_bwidth, "Internal LCD line width (40)");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 441)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 442) static int lcd_hwidth = NOT_SET; /* hardware buffer width (usually 64) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 443) module_param(lcd_hwidth, int, 0000);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 444) MODULE_PARM_DESC(lcd_hwidth, "LCD line hardware address (64)");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 445)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 446) static int lcd_charset = NOT_SET;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 447) module_param(lcd_charset, int, 0000);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 448) MODULE_PARM_DESC(lcd_charset, "LCD character set: 0=standard, 1=KS0074");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 449)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 450) static int lcd_proto = NOT_SET;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 451) module_param(lcd_proto, int, 0000);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 452) MODULE_PARM_DESC(lcd_proto,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 453) "LCD communication: 0=parallel (//), 1=serial, 2=TI LCD Interface");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 454)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 455) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 456) * These are the parallel port pins the LCD control signals are connected to.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 457) * Set this to 0 if the signal is not used. Set it to its opposite value
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 458) * (negative) if the signal is negated. -MAXINT is used to indicate that the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 459) * pin has not been explicitly specified.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 460) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 461) * WARNING! no check will be performed about collisions with keypad !
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 462) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 463)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 464) static int lcd_e_pin = PIN_NOT_SET;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 465) module_param(lcd_e_pin, int, 0000);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 466) MODULE_PARM_DESC(lcd_e_pin,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 467) "# of the // port pin connected to LCD 'E' signal, with polarity (-17..17)");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 468)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 469) static int lcd_rs_pin = PIN_NOT_SET;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 470) module_param(lcd_rs_pin, int, 0000);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 471) MODULE_PARM_DESC(lcd_rs_pin,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 472) "# of the // port pin connected to LCD 'RS' signal, with polarity (-17..17)");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 473)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 474) static int lcd_rw_pin = PIN_NOT_SET;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 475) module_param(lcd_rw_pin, int, 0000);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 476) MODULE_PARM_DESC(lcd_rw_pin,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 477) "# of the // port pin connected to LCD 'RW' signal, with polarity (-17..17)");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 478)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 479) static int lcd_cl_pin = PIN_NOT_SET;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 480) module_param(lcd_cl_pin, int, 0000);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 481) MODULE_PARM_DESC(lcd_cl_pin,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 482) "# of the // port pin connected to serial LCD 'SCL' signal, with polarity (-17..17)");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 483)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 484) static int lcd_da_pin = PIN_NOT_SET;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 485) module_param(lcd_da_pin, int, 0000);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 486) MODULE_PARM_DESC(lcd_da_pin,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 487) "# of the // port pin connected to serial LCD 'SDA' signal, with polarity (-17..17)");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 488)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 489) static int lcd_bl_pin = PIN_NOT_SET;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 490) module_param(lcd_bl_pin, int, 0000);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 491) MODULE_PARM_DESC(lcd_bl_pin,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 492) "# of the // port pin connected to LCD backlight, with polarity (-17..17)");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 493)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 494) /* Deprecated module parameters - consider not using them anymore */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 495)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 496) static int lcd_enabled = NOT_SET;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 497) module_param(lcd_enabled, int, 0000);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 498) MODULE_PARM_DESC(lcd_enabled, "Deprecated option, use lcd_type instead");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 499)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 500) static int keypad_enabled = NOT_SET;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 501) module_param(keypad_enabled, int, 0000);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 502) MODULE_PARM_DESC(keypad_enabled, "Deprecated option, use keypad_type instead");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 503)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 504) /* for some LCD drivers (ks0074) we need a charset conversion table. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 505) static const unsigned char lcd_char_conv_ks0074[256] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 506) /* 0|8 1|9 2|A 3|B 4|C 5|D 6|E 7|F */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 507) /* 0x00 */ 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 508) /* 0x08 */ 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 509) /* 0x10 */ 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 510) /* 0x18 */ 0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 511) /* 0x20 */ 0x20, 0x21, 0x22, 0x23, 0xa2, 0x25, 0x26, 0x27,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 512) /* 0x28 */ 0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 513) /* 0x30 */ 0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 514) /* 0x38 */ 0x38, 0x39, 0x3a, 0x3b, 0x3c, 0x3d, 0x3e, 0x3f,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 515) /* 0x40 */ 0xa0, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 516) /* 0x48 */ 0x48, 0x49, 0x4a, 0x4b, 0x4c, 0x4d, 0x4e, 0x4f,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 517) /* 0x50 */ 0x50, 0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x57,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 518) /* 0x58 */ 0x58, 0x59, 0x5a, 0xfa, 0xfb, 0xfc, 0x1d, 0xc4,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 519) /* 0x60 */ 0x96, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 520) /* 0x68 */ 0x68, 0x69, 0x6a, 0x6b, 0x6c, 0x6d, 0x6e, 0x6f,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 521) /* 0x70 */ 0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 522) /* 0x78 */ 0x78, 0x79, 0x7a, 0xfd, 0xfe, 0xff, 0xce, 0x20,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 523) /* 0x80 */ 0x80, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 524) /* 0x88 */ 0x88, 0x89, 0x8a, 0x8b, 0x8c, 0x8d, 0x8e, 0x8f,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 525) /* 0x90 */ 0x90, 0x91, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 526) /* 0x98 */ 0x98, 0x99, 0x9a, 0x9b, 0x9c, 0x9d, 0x9e, 0x9f,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 527) /* 0xA0 */ 0x20, 0x40, 0xb1, 0xa1, 0x24, 0xa3, 0xfe, 0x5f,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 528) /* 0xA8 */ 0x22, 0xc8, 0x61, 0x14, 0x97, 0x2d, 0xad, 0x96,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 529) /* 0xB0 */ 0x80, 0x8c, 0x82, 0x83, 0x27, 0x8f, 0x86, 0xdd,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 530) /* 0xB8 */ 0x2c, 0x81, 0x6f, 0x15, 0x8b, 0x8a, 0x84, 0x60,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 531) /* 0xC0 */ 0xe2, 0xe2, 0xe2, 0x5b, 0x5b, 0xae, 0xbc, 0xa9,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 532) /* 0xC8 */ 0xc5, 0xbf, 0xc6, 0xf1, 0xe3, 0xe3, 0xe3, 0xe3,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 533) /* 0xD0 */ 0x44, 0x5d, 0xa8, 0xe4, 0xec, 0xec, 0x5c, 0x78,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 534) /* 0xD8 */ 0xab, 0xa6, 0xe5, 0x5e, 0x5e, 0xe6, 0xaa, 0xbe,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 535) /* 0xE0 */ 0x7f, 0xe7, 0xaf, 0x7b, 0x7b, 0xaf, 0xbd, 0xc8,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 536) /* 0xE8 */ 0xa4, 0xa5, 0xc7, 0xf6, 0xa7, 0xe8, 0x69, 0x69,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 537) /* 0xF0 */ 0xed, 0x7d, 0xa8, 0xe4, 0xec, 0x5c, 0x5c, 0x25,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 538) /* 0xF8 */ 0xac, 0xa6, 0xea, 0xef, 0x7e, 0xeb, 0xb2, 0x79,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 539) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 540)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 541) static const char old_keypad_profile[][4][9] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 542) {"S0", "Left\n", "Left\n", ""},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 543) {"S1", "Down\n", "Down\n", ""},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 544) {"S2", "Up\n", "Up\n", ""},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 545) {"S3", "Right\n", "Right\n", ""},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 546) {"S4", "Esc\n", "Esc\n", ""},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 547) {"S5", "Ret\n", "Ret\n", ""},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 548) {"", "", "", ""}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 549) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 550)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 551) /* signals, press, repeat, release */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 552) static const char new_keypad_profile[][4][9] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 553) {"S0", "Left\n", "Left\n", ""},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 554) {"S1", "Down\n", "Down\n", ""},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 555) {"S2", "Up\n", "Up\n", ""},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 556) {"S3", "Right\n", "Right\n", ""},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 557) {"S4s5", "", "Esc\n", "Esc\n"},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 558) {"s4S5", "", "Ret\n", "Ret\n"},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 559) {"S4S5", "Help\n", "", ""},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 560) /* add new signals above this line */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 561) {"", "", "", ""}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 562) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 563)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 564) /* signals, press, repeat, release */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 565) static const char nexcom_keypad_profile[][4][9] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 566) {"a-p-e-", "Down\n", "Down\n", ""},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 567) {"a-p-E-", "Ret\n", "Ret\n", ""},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 568) {"a-P-E-", "Esc\n", "Esc\n", ""},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 569) {"a-P-e-", "Up\n", "Up\n", ""},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 570) /* add new signals above this line */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 571) {"", "", "", ""}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 572) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 573)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 574) static const char (*keypad_profile)[4][9] = old_keypad_profile;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 575)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 576) static DECLARE_BITMAP(bits, LCD_BITS);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 577)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 578) static void lcd_get_bits(unsigned int port, int *val)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 579) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 580) unsigned int bit, state;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 581)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 582) for (bit = 0; bit < LCD_BITS; bit++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 583) state = test_bit(bit, bits) ? BIT_SET : BIT_CLR;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 584) *val &= lcd_bits[port][bit][BIT_MSK];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 585) *val |= lcd_bits[port][bit][state];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 586) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 587) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 588)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 589) /* sets data port bits according to current signals values */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 590) static int set_data_bits(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 591) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 592) int val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 593)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 594) val = r_dtr(pprt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 595) lcd_get_bits(LCD_PORT_D, &val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 596) w_dtr(pprt, val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 597) return val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 598) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 599)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 600) /* sets ctrl port bits according to current signals values */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 601) static int set_ctrl_bits(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 602) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 603) int val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 604)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 605) val = r_ctr(pprt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 606) lcd_get_bits(LCD_PORT_C, &val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 607) w_ctr(pprt, val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 608) return val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 609) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 610)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 611) /* sets ctrl & data port bits according to current signals values */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 612) static void panel_set_bits(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 613) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 614) set_data_bits();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 615) set_ctrl_bits();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 616) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 617)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 618) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 619) * Converts a parallel port pin (from -25 to 25) to data and control ports
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 620) * masks, and data and control port bits. The signal will be considered
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 621) * unconnected if it's on pin 0 or an invalid pin (<-25 or >25).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 622) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 623) * Result will be used this way :
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 624) * out(dport, in(dport) & d_val[2] | d_val[signal_state])
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 625) * out(cport, in(cport) & c_val[2] | c_val[signal_state])
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 626) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 627) static void pin_to_bits(int pin, unsigned char *d_val, unsigned char *c_val)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 628) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 629) int d_bit, c_bit, inv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 630)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 631) d_val[0] = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 632) c_val[0] = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 633) d_val[1] = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 634) c_val[1] = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 635) d_val[2] = 0xFF;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 636) c_val[2] = 0xFF;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 637)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 638) if (pin == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 639) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 640)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 641) inv = (pin < 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 642) if (inv)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 643) pin = -pin;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 644)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 645) d_bit = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 646) c_bit = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 647)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 648) switch (pin) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 649) case PIN_STROBE: /* strobe, inverted */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 650) c_bit = PNL_PSTROBE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 651) inv = !inv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 652) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 653) case PIN_D0...PIN_D7: /* D0 - D7 = 2 - 9 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 654) d_bit = 1 << (pin - 2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 655) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 656) case PIN_AUTOLF: /* autofeed, inverted */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 657) c_bit = PNL_PAUTOLF;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 658) inv = !inv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 659) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 660) case PIN_INITP: /* init, direct */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 661) c_bit = PNL_PINITP;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 662) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 663) case PIN_SELECP: /* select_in, inverted */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 664) c_bit = PNL_PSELECP;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 665) inv = !inv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 666) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 667) default: /* unknown pin, ignore */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 668) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 669) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 670)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 671) if (c_bit) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 672) c_val[2] &= ~c_bit;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 673) c_val[!inv] = c_bit;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 674) } else if (d_bit) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 675) d_val[2] &= ~d_bit;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 676) d_val[!inv] = d_bit;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 677) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 678) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 679)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 680) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 681) * send a serial byte to the LCD panel. The caller is responsible for locking
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 682) * if needed.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 683) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 684) static void lcd_send_serial(int byte)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 685) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 686) int bit;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 687)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 688) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 689) * the data bit is set on D0, and the clock on STROBE.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 690) * LCD reads D0 on STROBE's rising edge.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 691) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 692) for (bit = 0; bit < 8; bit++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 693) clear_bit(LCD_BIT_CL, bits); /* CLK low */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 694) panel_set_bits();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 695) if (byte & 1) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 696) set_bit(LCD_BIT_DA, bits);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 697) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 698) clear_bit(LCD_BIT_DA, bits);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 699) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 700)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 701) panel_set_bits();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 702) udelay(2); /* maintain the data during 2 us before CLK up */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 703) set_bit(LCD_BIT_CL, bits); /* CLK high */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 704) panel_set_bits();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 705) udelay(1); /* maintain the strobe during 1 us */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 706) byte >>= 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 707) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 708) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 709)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 710) /* turn the backlight on or off */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 711) static void lcd_backlight(struct charlcd *charlcd, int on)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 712) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 713) if (lcd.pins.bl == PIN_NONE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 714) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 715)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 716) /* The backlight is activated by setting the AUTOFEED line to +5V */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 717) spin_lock_irq(&pprt_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 718) if (on)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 719) set_bit(LCD_BIT_BL, bits);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 720) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 721) clear_bit(LCD_BIT_BL, bits);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 722) panel_set_bits();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 723) spin_unlock_irq(&pprt_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 724) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 725)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 726) /* send a command to the LCD panel in serial mode */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 727) static void lcd_write_cmd_s(struct charlcd *charlcd, int cmd)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 728) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 729) spin_lock_irq(&pprt_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 730) lcd_send_serial(0x1F); /* R/W=W, RS=0 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 731) lcd_send_serial(cmd & 0x0F);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 732) lcd_send_serial((cmd >> 4) & 0x0F);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 733) udelay(40); /* the shortest command takes at least 40 us */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 734) spin_unlock_irq(&pprt_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 735) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 736)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 737) /* send data to the LCD panel in serial mode */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 738) static void lcd_write_data_s(struct charlcd *charlcd, int data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 739) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 740) spin_lock_irq(&pprt_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 741) lcd_send_serial(0x5F); /* R/W=W, RS=1 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 742) lcd_send_serial(data & 0x0F);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 743) lcd_send_serial((data >> 4) & 0x0F);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 744) udelay(40); /* the shortest data takes at least 40 us */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 745) spin_unlock_irq(&pprt_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 746) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 747)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 748) /* send a command to the LCD panel in 8 bits parallel mode */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 749) static void lcd_write_cmd_p8(struct charlcd *charlcd, int cmd)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 750) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 751) spin_lock_irq(&pprt_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 752) /* present the data to the data port */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 753) w_dtr(pprt, cmd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 754) udelay(20); /* maintain the data during 20 us before the strobe */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 755)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 756) set_bit(LCD_BIT_E, bits);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 757) clear_bit(LCD_BIT_RS, bits);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 758) clear_bit(LCD_BIT_RW, bits);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 759) set_ctrl_bits();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 760)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 761) udelay(40); /* maintain the strobe during 40 us */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 762)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 763) clear_bit(LCD_BIT_E, bits);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 764) set_ctrl_bits();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 765)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 766) udelay(120); /* the shortest command takes at least 120 us */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 767) spin_unlock_irq(&pprt_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 768) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 769)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 770) /* send data to the LCD panel in 8 bits parallel mode */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 771) static void lcd_write_data_p8(struct charlcd *charlcd, int data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 772) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 773) spin_lock_irq(&pprt_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 774) /* present the data to the data port */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 775) w_dtr(pprt, data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 776) udelay(20); /* maintain the data during 20 us before the strobe */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 777)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 778) set_bit(LCD_BIT_E, bits);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 779) set_bit(LCD_BIT_RS, bits);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 780) clear_bit(LCD_BIT_RW, bits);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 781) set_ctrl_bits();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 782)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 783) udelay(40); /* maintain the strobe during 40 us */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 784)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 785) clear_bit(LCD_BIT_E, bits);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 786) set_ctrl_bits();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 787)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 788) udelay(45); /* the shortest data takes at least 45 us */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 789) spin_unlock_irq(&pprt_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 790) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 791)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 792) /* send a command to the TI LCD panel */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 793) static void lcd_write_cmd_tilcd(struct charlcd *charlcd, int cmd)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 794) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 795) spin_lock_irq(&pprt_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 796) /* present the data to the control port */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 797) w_ctr(pprt, cmd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 798) udelay(60);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 799) spin_unlock_irq(&pprt_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 800) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 801)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 802) /* send data to the TI LCD panel */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 803) static void lcd_write_data_tilcd(struct charlcd *charlcd, int data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 804) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 805) spin_lock_irq(&pprt_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 806) /* present the data to the data port */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 807) w_dtr(pprt, data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 808) udelay(60);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 809) spin_unlock_irq(&pprt_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 810) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 811)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 812) /* fills the display with spaces and resets X/Y */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 813) static void lcd_clear_fast_s(struct charlcd *charlcd)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 814) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 815) int pos;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 816)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 817) spin_lock_irq(&pprt_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 818) for (pos = 0; pos < charlcd->height * charlcd->hwidth; pos++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 819) lcd_send_serial(0x5F); /* R/W=W, RS=1 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 820) lcd_send_serial(' ' & 0x0F);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 821) lcd_send_serial((' ' >> 4) & 0x0F);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 822) /* the shortest data takes at least 40 us */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 823) udelay(40);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 824) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 825) spin_unlock_irq(&pprt_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 826) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 827)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 828) /* fills the display with spaces and resets X/Y */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 829) static void lcd_clear_fast_p8(struct charlcd *charlcd)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 830) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 831) int pos;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 832)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 833) spin_lock_irq(&pprt_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 834) for (pos = 0; pos < charlcd->height * charlcd->hwidth; pos++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 835) /* present the data to the data port */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 836) w_dtr(pprt, ' ');
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 837)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 838) /* maintain the data during 20 us before the strobe */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 839) udelay(20);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 840)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 841) set_bit(LCD_BIT_E, bits);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 842) set_bit(LCD_BIT_RS, bits);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 843) clear_bit(LCD_BIT_RW, bits);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 844) set_ctrl_bits();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 845)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 846) /* maintain the strobe during 40 us */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 847) udelay(40);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 848)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 849) clear_bit(LCD_BIT_E, bits);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 850) set_ctrl_bits();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 851)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 852) /* the shortest data takes at least 45 us */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 853) udelay(45);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 854) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 855) spin_unlock_irq(&pprt_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 856) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 857)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 858) /* fills the display with spaces and resets X/Y */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 859) static void lcd_clear_fast_tilcd(struct charlcd *charlcd)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 860) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 861) int pos;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 862)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 863) spin_lock_irq(&pprt_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 864) for (pos = 0; pos < charlcd->height * charlcd->hwidth; pos++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 865) /* present the data to the data port */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 866) w_dtr(pprt, ' ');
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 867) udelay(60);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 868) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 869)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 870) spin_unlock_irq(&pprt_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 871) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 872)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 873) static const struct charlcd_ops charlcd_serial_ops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 874) .write_cmd = lcd_write_cmd_s,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 875) .write_data = lcd_write_data_s,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 876) .clear_fast = lcd_clear_fast_s,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 877) .backlight = lcd_backlight,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 878) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 879)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 880) static const struct charlcd_ops charlcd_parallel_ops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 881) .write_cmd = lcd_write_cmd_p8,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 882) .write_data = lcd_write_data_p8,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 883) .clear_fast = lcd_clear_fast_p8,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 884) .backlight = lcd_backlight,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 885) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 886)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 887) static const struct charlcd_ops charlcd_tilcd_ops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 888) .write_cmd = lcd_write_cmd_tilcd,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 889) .write_data = lcd_write_data_tilcd,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 890) .clear_fast = lcd_clear_fast_tilcd,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 891) .backlight = lcd_backlight,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 892) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 893)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 894) /* initialize the LCD driver */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 895) static void lcd_init(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 896) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 897) struct charlcd *charlcd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 898)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 899) charlcd = charlcd_alloc(0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 900) if (!charlcd)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 901) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 902)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 903) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 904) * Init lcd struct with load-time values to preserve exact
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 905) * current functionality (at least for now).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 906) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 907) charlcd->height = lcd_height;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 908) charlcd->width = lcd_width;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 909) charlcd->bwidth = lcd_bwidth;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 910) charlcd->hwidth = lcd_hwidth;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 911)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 912) switch (selected_lcd_type) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 913) case LCD_TYPE_OLD:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 914) /* parallel mode, 8 bits */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 915) lcd.proto = LCD_PROTO_PARALLEL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 916) lcd.charset = LCD_CHARSET_NORMAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 917) lcd.pins.e = PIN_STROBE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 918) lcd.pins.rs = PIN_AUTOLF;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 919)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 920) charlcd->width = 40;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 921) charlcd->bwidth = 40;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 922) charlcd->hwidth = 64;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 923) charlcd->height = 2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 924) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 925) case LCD_TYPE_KS0074:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 926) /* serial mode, ks0074 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 927) lcd.proto = LCD_PROTO_SERIAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 928) lcd.charset = LCD_CHARSET_KS0074;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 929) lcd.pins.bl = PIN_AUTOLF;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 930) lcd.pins.cl = PIN_STROBE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 931) lcd.pins.da = PIN_D0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 932)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 933) charlcd->width = 16;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 934) charlcd->bwidth = 40;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 935) charlcd->hwidth = 16;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 936) charlcd->height = 2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 937) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 938) case LCD_TYPE_NEXCOM:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 939) /* parallel mode, 8 bits, generic */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 940) lcd.proto = LCD_PROTO_PARALLEL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 941) lcd.charset = LCD_CHARSET_NORMAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 942) lcd.pins.e = PIN_AUTOLF;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 943) lcd.pins.rs = PIN_SELECP;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 944) lcd.pins.rw = PIN_INITP;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 945)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 946) charlcd->width = 16;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 947) charlcd->bwidth = 40;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 948) charlcd->hwidth = 64;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 949) charlcd->height = 2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 950) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 951) case LCD_TYPE_CUSTOM:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 952) /* customer-defined */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 953) lcd.proto = DEFAULT_LCD_PROTO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 954) lcd.charset = DEFAULT_LCD_CHARSET;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 955) /* default geometry will be set later */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 956) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 957) case LCD_TYPE_HANTRONIX:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 958) /* parallel mode, 8 bits, hantronix-like */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 959) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 960) lcd.proto = LCD_PROTO_PARALLEL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 961) lcd.charset = LCD_CHARSET_NORMAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 962) lcd.pins.e = PIN_STROBE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 963) lcd.pins.rs = PIN_SELECP;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 964)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 965) charlcd->width = 16;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 966) charlcd->bwidth = 40;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 967) charlcd->hwidth = 64;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 968) charlcd->height = 2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 969) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 970) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 971)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 972) /* Overwrite with module params set on loading */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 973) if (lcd_height != NOT_SET)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 974) charlcd->height = lcd_height;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 975) if (lcd_width != NOT_SET)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 976) charlcd->width = lcd_width;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 977) if (lcd_bwidth != NOT_SET)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 978) charlcd->bwidth = lcd_bwidth;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 979) if (lcd_hwidth != NOT_SET)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 980) charlcd->hwidth = lcd_hwidth;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 981) if (lcd_charset != NOT_SET)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 982) lcd.charset = lcd_charset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 983) if (lcd_proto != NOT_SET)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 984) lcd.proto = lcd_proto;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 985) if (lcd_e_pin != PIN_NOT_SET)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 986) lcd.pins.e = lcd_e_pin;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 987) if (lcd_rs_pin != PIN_NOT_SET)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 988) lcd.pins.rs = lcd_rs_pin;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 989) if (lcd_rw_pin != PIN_NOT_SET)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 990) lcd.pins.rw = lcd_rw_pin;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 991) if (lcd_cl_pin != PIN_NOT_SET)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 992) lcd.pins.cl = lcd_cl_pin;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 993) if (lcd_da_pin != PIN_NOT_SET)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 994) lcd.pins.da = lcd_da_pin;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 995) if (lcd_bl_pin != PIN_NOT_SET)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 996) lcd.pins.bl = lcd_bl_pin;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 997)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 998) /* this is used to catch wrong and default values */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 999) if (charlcd->width <= 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1000) charlcd->width = DEFAULT_LCD_WIDTH;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1001) if (charlcd->bwidth <= 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1002) charlcd->bwidth = DEFAULT_LCD_BWIDTH;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1003) if (charlcd->hwidth <= 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1004) charlcd->hwidth = DEFAULT_LCD_HWIDTH;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1005) if (charlcd->height <= 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1006) charlcd->height = DEFAULT_LCD_HEIGHT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1007)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1008) if (lcd.proto == LCD_PROTO_SERIAL) { /* SERIAL */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1009) charlcd->ops = &charlcd_serial_ops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1010)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1011) if (lcd.pins.cl == PIN_NOT_SET)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1012) lcd.pins.cl = DEFAULT_LCD_PIN_SCL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1013) if (lcd.pins.da == PIN_NOT_SET)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1014) lcd.pins.da = DEFAULT_LCD_PIN_SDA;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1015)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1016) } else if (lcd.proto == LCD_PROTO_PARALLEL) { /* PARALLEL */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1017) charlcd->ops = &charlcd_parallel_ops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1018)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1019) if (lcd.pins.e == PIN_NOT_SET)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1020) lcd.pins.e = DEFAULT_LCD_PIN_E;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1021) if (lcd.pins.rs == PIN_NOT_SET)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1022) lcd.pins.rs = DEFAULT_LCD_PIN_RS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1023) if (lcd.pins.rw == PIN_NOT_SET)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1024) lcd.pins.rw = DEFAULT_LCD_PIN_RW;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1025) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1026) charlcd->ops = &charlcd_tilcd_ops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1027) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1028)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1029) if (lcd.pins.bl == PIN_NOT_SET)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1030) lcd.pins.bl = DEFAULT_LCD_PIN_BL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1031)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1032) if (lcd.pins.e == PIN_NOT_SET)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1033) lcd.pins.e = PIN_NONE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1034) if (lcd.pins.rs == PIN_NOT_SET)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1035) lcd.pins.rs = PIN_NONE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1036) if (lcd.pins.rw == PIN_NOT_SET)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1037) lcd.pins.rw = PIN_NONE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1038) if (lcd.pins.bl == PIN_NOT_SET)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1039) lcd.pins.bl = PIN_NONE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1040) if (lcd.pins.cl == PIN_NOT_SET)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1041) lcd.pins.cl = PIN_NONE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1042) if (lcd.pins.da == PIN_NOT_SET)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1043) lcd.pins.da = PIN_NONE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1044)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1045) if (lcd.charset == NOT_SET)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1046) lcd.charset = DEFAULT_LCD_CHARSET;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1047)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1048) if (lcd.charset == LCD_CHARSET_KS0074)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1049) charlcd->char_conv = lcd_char_conv_ks0074;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1050) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1051) charlcd->char_conv = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1052)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1053) pin_to_bits(lcd.pins.e, lcd_bits[LCD_PORT_D][LCD_BIT_E],
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1054) lcd_bits[LCD_PORT_C][LCD_BIT_E]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1055) pin_to_bits(lcd.pins.rs, lcd_bits[LCD_PORT_D][LCD_BIT_RS],
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1056) lcd_bits[LCD_PORT_C][LCD_BIT_RS]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1057) pin_to_bits(lcd.pins.rw, lcd_bits[LCD_PORT_D][LCD_BIT_RW],
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1058) lcd_bits[LCD_PORT_C][LCD_BIT_RW]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1059) pin_to_bits(lcd.pins.bl, lcd_bits[LCD_PORT_D][LCD_BIT_BL],
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1060) lcd_bits[LCD_PORT_C][LCD_BIT_BL]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1061) pin_to_bits(lcd.pins.cl, lcd_bits[LCD_PORT_D][LCD_BIT_CL],
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1062) lcd_bits[LCD_PORT_C][LCD_BIT_CL]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1063) pin_to_bits(lcd.pins.da, lcd_bits[LCD_PORT_D][LCD_BIT_DA],
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1064) lcd_bits[LCD_PORT_C][LCD_BIT_DA]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1065)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1066) lcd.charlcd = charlcd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1067) lcd.initialized = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1068) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1069)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1070) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1071) * These are the file operation function for user access to /dev/keypad
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1072) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1073)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1074) static ssize_t keypad_read(struct file *file,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1075) char __user *buf, size_t count, loff_t *ppos)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1076) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1077) unsigned i = *ppos;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1078) char __user *tmp = buf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1079)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1080) if (keypad_buflen == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1081) if (file->f_flags & O_NONBLOCK)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1082) return -EAGAIN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1083)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1084) if (wait_event_interruptible(keypad_read_wait,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1085) keypad_buflen != 0))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1086) return -EINTR;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1087) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1088)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1089) for (; count-- > 0 && (keypad_buflen > 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1090) ++i, ++tmp, --keypad_buflen) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1091) put_user(keypad_buffer[keypad_start], tmp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1092) keypad_start = (keypad_start + 1) % KEYPAD_BUFFER;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1093) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1094) *ppos = i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1095)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1096) return tmp - buf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1097) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1098)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1099) static int keypad_open(struct inode *inode, struct file *file)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1100) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1101) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1102)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1103) ret = -EBUSY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1104) if (!atomic_dec_and_test(&keypad_available))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1105) goto fail; /* open only once at a time */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1106)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1107) ret = -EPERM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1108) if (file->f_mode & FMODE_WRITE) /* device is read-only */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1109) goto fail;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1110)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1111) keypad_buflen = 0; /* flush the buffer on opening */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1112) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1113) fail:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1114) atomic_inc(&keypad_available);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1115) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1116) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1117)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1118) static int keypad_release(struct inode *inode, struct file *file)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1119) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1120) atomic_inc(&keypad_available);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1121) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1122) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1123)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1124) static const struct file_operations keypad_fops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1125) .read = keypad_read, /* read */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1126) .open = keypad_open, /* open */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1127) .release = keypad_release, /* close */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1128) .llseek = default_llseek,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1129) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1130)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1131) static struct miscdevice keypad_dev = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1132) .minor = KEYPAD_MINOR,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1133) .name = "keypad",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1134) .fops = &keypad_fops,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1135) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1136)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1137) static void keypad_send_key(const char *string, int max_len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1138) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1139) /* send the key to the device only if a process is attached to it. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1140) if (!atomic_read(&keypad_available)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1141) while (max_len-- && keypad_buflen < KEYPAD_BUFFER && *string) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1142) keypad_buffer[(keypad_start + keypad_buflen++) %
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1143) KEYPAD_BUFFER] = *string++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1144) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1145) wake_up_interruptible(&keypad_read_wait);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1146) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1147) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1148)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1149) /* this function scans all the bits involving at least one logical signal,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1150) * and puts the results in the bitfield "phys_read" (one bit per established
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1151) * contact), and sets "phys_read_prev" to "phys_read".
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1152) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1153) * Note: to debounce input signals, we will only consider as switched a signal
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1154) * which is stable across 2 measures. Signals which are different between two
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1155) * reads will be kept as they previously were in their logical form (phys_prev).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1156) * A signal which has just switched will have a 1 in
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1157) * (phys_read ^ phys_read_prev).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1158) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1159) static void phys_scan_contacts(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1160) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1161) int bit, bitval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1162) char oldval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1163) char bitmask;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1164) char gndmask;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1165)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1166) phys_prev = phys_curr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1167) phys_read_prev = phys_read;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1168) phys_read = 0; /* flush all signals */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1169)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1170) /* keep track of old value, with all outputs disabled */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1171) oldval = r_dtr(pprt) | scan_mask_o;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1172) /* activate all keyboard outputs (active low) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1173) w_dtr(pprt, oldval & ~scan_mask_o);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1174)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1175) /* will have a 1 for each bit set to gnd */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1176) bitmask = PNL_PINPUT(r_str(pprt)) & scan_mask_i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1177) /* disable all matrix signals */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1178) w_dtr(pprt, oldval);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1179)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1180) /* now that all outputs are cleared, the only active input bits are
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1181) * directly connected to the ground
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1182) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1183)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1184) /* 1 for each grounded input */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1185) gndmask = PNL_PINPUT(r_str(pprt)) & scan_mask_i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1186)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1187) /* grounded inputs are signals 40-44 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1188) phys_read |= (__u64)gndmask << 40;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1189)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1190) if (bitmask != gndmask) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1191) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1192) * since clearing the outputs changed some inputs, we know
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1193) * that some input signals are currently tied to some outputs.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1194) * So we'll scan them.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1195) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1196) for (bit = 0; bit < 8; bit++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1197) bitval = BIT(bit);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1198)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1199) if (!(scan_mask_o & bitval)) /* skip unused bits */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1200) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1201)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1202) w_dtr(pprt, oldval & ~bitval); /* enable this output */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1203) bitmask = PNL_PINPUT(r_str(pprt)) & ~gndmask;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1204) phys_read |= (__u64)bitmask << (5 * bit);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1205) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1206) w_dtr(pprt, oldval); /* disable all outputs */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1207) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1208) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1209) * this is easy: use old bits when they are flapping,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1210) * use new ones when stable
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1211) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1212) phys_curr = (phys_prev & (phys_read ^ phys_read_prev)) |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1213) (phys_read & ~(phys_read ^ phys_read_prev));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1214) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1215)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1216) static inline int input_state_high(struct logical_input *input)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1217) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1218) #if 0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1219) /* FIXME:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1220) * this is an invalid test. It tries to catch
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1221) * transitions from single-key to multiple-key, but
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1222) * doesn't take into account the contacts polarity.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1223) * The only solution to the problem is to parse keys
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1224) * from the most complex to the simplest combinations,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1225) * and mark them as 'caught' once a combination
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1226) * matches, then unmatch it for all other ones.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1227) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1228)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1229) /* try to catch dangerous transitions cases :
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1230) * someone adds a bit, so this signal was a false
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1231) * positive resulting from a transition. We should
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1232) * invalidate the signal immediately and not call the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1233) * release function.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1234) * eg: 0 -(press A)-> A -(press B)-> AB : don't match A's release.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1235) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1236) if (((phys_prev & input->mask) == input->value) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1237) ((phys_curr & input->mask) > input->value)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1238) input->state = INPUT_ST_LOW; /* invalidate */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1239) return 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1240) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1241) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1242)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1243) if ((phys_curr & input->mask) == input->value) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1244) if ((input->type == INPUT_TYPE_STD) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1245) (input->high_timer == 0)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1246) input->high_timer++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1247) if (input->u.std.press_fct)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1248) input->u.std.press_fct(input->u.std.press_data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1249) } else if (input->type == INPUT_TYPE_KBD) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1250) /* will turn on the light */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1251) keypressed = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1252)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1253) if (input->high_timer == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1254) char *press_str = input->u.kbd.press_str;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1255)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1256) if (press_str[0]) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1257) int s = sizeof(input->u.kbd.press_str);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1258)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1259) keypad_send_key(press_str, s);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1260) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1261) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1262)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1263) if (input->u.kbd.repeat_str[0]) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1264) char *repeat_str = input->u.kbd.repeat_str;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1265)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1266) if (input->high_timer >= KEYPAD_REP_START) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1267) int s = sizeof(input->u.kbd.repeat_str);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1268)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1269) input->high_timer -= KEYPAD_REP_DELAY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1270) keypad_send_key(repeat_str, s);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1271) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1272) /* we will need to come back here soon */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1273) inputs_stable = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1274) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1275)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1276) if (input->high_timer < 255)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1277) input->high_timer++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1278) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1279) return 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1280) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1281)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1282) /* else signal falling down. Let's fall through. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1283) input->state = INPUT_ST_FALLING;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1284) input->fall_timer = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1285)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1286) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1287) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1288)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1289) static inline void input_state_falling(struct logical_input *input)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1290) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1291) #if 0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1292) /* FIXME !!! same comment as in input_state_high */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1293) if (((phys_prev & input->mask) == input->value) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1294) ((phys_curr & input->mask) > input->value)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1295) input->state = INPUT_ST_LOW; /* invalidate */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1296) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1297) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1298) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1299)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1300) if ((phys_curr & input->mask) == input->value) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1301) if (input->type == INPUT_TYPE_KBD) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1302) /* will turn on the light */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1303) keypressed = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1304)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1305) if (input->u.kbd.repeat_str[0]) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1306) char *repeat_str = input->u.kbd.repeat_str;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1307)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1308) if (input->high_timer >= KEYPAD_REP_START) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1309) int s = sizeof(input->u.kbd.repeat_str);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1310)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1311) input->high_timer -= KEYPAD_REP_DELAY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1312) keypad_send_key(repeat_str, s);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1313) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1314) /* we will need to come back here soon */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1315) inputs_stable = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1316) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1317)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1318) if (input->high_timer < 255)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1319) input->high_timer++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1320) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1321) input->state = INPUT_ST_HIGH;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1322) } else if (input->fall_timer >= input->fall_time) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1323) /* call release event */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1324) if (input->type == INPUT_TYPE_STD) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1325) void (*release_fct)(int) = input->u.std.release_fct;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1326)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1327) if (release_fct)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1328) release_fct(input->u.std.release_data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1329) } else if (input->type == INPUT_TYPE_KBD) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1330) char *release_str = input->u.kbd.release_str;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1331)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1332) if (release_str[0]) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1333) int s = sizeof(input->u.kbd.release_str);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1334)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1335) keypad_send_key(release_str, s);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1336) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1337) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1338)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1339) input->state = INPUT_ST_LOW;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1340) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1341) input->fall_timer++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1342) inputs_stable = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1343) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1344) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1345)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1346) static void panel_process_inputs(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1347) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1348) struct logical_input *input;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1349)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1350) keypressed = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1351) inputs_stable = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1352) list_for_each_entry(input, &logical_inputs, list) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1353) switch (input->state) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1354) case INPUT_ST_LOW:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1355) if ((phys_curr & input->mask) != input->value)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1356) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1357) /* if all needed ones were already set previously,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1358) * this means that this logical signal has been
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1359) * activated by the releasing of another combined
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1360) * signal, so we don't want to match.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1361) * eg: AB -(release B)-> A -(release A)-> 0 :
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1362) * don't match A.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1363) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1364) if ((phys_prev & input->mask) == input->value)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1365) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1366) input->rise_timer = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1367) input->state = INPUT_ST_RISING;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1368) fallthrough;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1369) case INPUT_ST_RISING:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1370) if ((phys_curr & input->mask) != input->value) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1371) input->state = INPUT_ST_LOW;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1372) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1373) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1374) if (input->rise_timer < input->rise_time) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1375) inputs_stable = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1376) input->rise_timer++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1377) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1378) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1379) input->high_timer = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1380) input->state = INPUT_ST_HIGH;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1381) fallthrough;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1382) case INPUT_ST_HIGH:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1383) if (input_state_high(input))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1384) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1385) fallthrough;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1386) case INPUT_ST_FALLING:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1387) input_state_falling(input);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1388) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1389) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1390) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1391)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1392) static void panel_scan_timer(struct timer_list *unused)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1393) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1394) if (keypad.enabled && keypad_initialized) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1395) if (spin_trylock_irq(&pprt_lock)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1396) phys_scan_contacts();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1397)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1398) /* no need for the parport anymore */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1399) spin_unlock_irq(&pprt_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1400) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1401)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1402) if (!inputs_stable || phys_curr != phys_prev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1403) panel_process_inputs();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1404) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1405)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1406) if (keypressed && lcd.enabled && lcd.initialized)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1407) charlcd_poke(lcd.charlcd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1408)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1409) mod_timer(&scan_timer, jiffies + INPUT_POLL_TIME);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1410) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1411)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1412) static void init_scan_timer(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1413) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1414) if (scan_timer.function)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1415) return; /* already started */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1416)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1417) timer_setup(&scan_timer, panel_scan_timer, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1418) scan_timer.expires = jiffies + INPUT_POLL_TIME;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1419) add_timer(&scan_timer);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1420) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1421)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1422) /* converts a name of the form "({BbAaPpSsEe}{01234567-})*" to a series of bits.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1423) * if <omask> or <imask> are non-null, they will be or'ed with the bits
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1424) * corresponding to out and in bits respectively.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1425) * returns 1 if ok, 0 if error (in which case, nothing is written).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1426) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1427) static u8 input_name2mask(const char *name, __u64 *mask, __u64 *value,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1428) u8 *imask, u8 *omask)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1429) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1430) const char sigtab[] = "EeSsPpAaBb";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1431) u8 im, om;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1432) __u64 m, v;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1433)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1434) om = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1435) im = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1436) m = 0ULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1437) v = 0ULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1438) while (*name) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1439) int in, out, bit, neg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1440) const char *idx;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1441)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1442) idx = strchr(sigtab, *name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1443) if (!idx)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1444) return 0; /* input name not found */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1445)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1446) in = idx - sigtab;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1447) neg = (in & 1); /* odd (lower) names are negated */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1448) in >>= 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1449) im |= BIT(in);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1450)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1451) name++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1452) if (*name >= '0' && *name <= '7') {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1453) out = *name - '0';
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1454) om |= BIT(out);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1455) } else if (*name == '-') {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1456) out = 8;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1457) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1458) return 0; /* unknown bit name */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1459) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1460)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1461) bit = (out * 5) + in;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1462)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1463) m |= 1ULL << bit;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1464) if (!neg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1465) v |= 1ULL << bit;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1466) name++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1467) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1468) *mask = m;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1469) *value = v;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1470) if (imask)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1471) *imask |= im;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1472) if (omask)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1473) *omask |= om;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1474) return 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1475) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1476)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1477) /* tries to bind a key to the signal name <name>. The key will send the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1478) * strings <press>, <repeat>, <release> for these respective events.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1479) * Returns the pointer to the new key if ok, NULL if the key could not be bound.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1480) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1481) static struct logical_input *panel_bind_key(const char *name, const char *press,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1482) const char *repeat,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1483) const char *release)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1484) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1485) struct logical_input *key;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1486)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1487) key = kzalloc(sizeof(*key), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1488) if (!key)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1489) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1490)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1491) if (!input_name2mask(name, &key->mask, &key->value, &scan_mask_i,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1492) &scan_mask_o)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1493) kfree(key);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1494) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1495) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1496)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1497) key->type = INPUT_TYPE_KBD;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1498) key->state = INPUT_ST_LOW;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1499) key->rise_time = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1500) key->fall_time = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1501)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1502) strncpy(key->u.kbd.press_str, press, sizeof(key->u.kbd.press_str));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1503) strncpy(key->u.kbd.repeat_str, repeat, sizeof(key->u.kbd.repeat_str));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1504) strncpy(key->u.kbd.release_str, release,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1505) sizeof(key->u.kbd.release_str));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1506) list_add(&key->list, &logical_inputs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1507) return key;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1508) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1509)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1510) #if 0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1511) /* tries to bind a callback function to the signal name <name>. The function
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1512) * <press_fct> will be called with the <press_data> arg when the signal is
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1513) * activated, and so on for <release_fct>/<release_data>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1514) * Returns the pointer to the new signal if ok, NULL if the signal could not
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1515) * be bound.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1516) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1517) static struct logical_input *panel_bind_callback(char *name,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1518) void (*press_fct)(int),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1519) int press_data,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1520) void (*release_fct)(int),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1521) int release_data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1522) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1523) struct logical_input *callback;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1524)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1525) callback = kmalloc(sizeof(*callback), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1526) if (!callback)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1527) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1528)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1529) memset(callback, 0, sizeof(struct logical_input));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1530) if (!input_name2mask(name, &callback->mask, &callback->value,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1531) &scan_mask_i, &scan_mask_o))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1532) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1533)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1534) callback->type = INPUT_TYPE_STD;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1535) callback->state = INPUT_ST_LOW;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1536) callback->rise_time = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1537) callback->fall_time = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1538) callback->u.std.press_fct = press_fct;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1539) callback->u.std.press_data = press_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1540) callback->u.std.release_fct = release_fct;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1541) callback->u.std.release_data = release_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1542) list_add(&callback->list, &logical_inputs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1543) return callback;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1544) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1545) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1546)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1547) static void keypad_init(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1548) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1549) int keynum;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1550)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1551) init_waitqueue_head(&keypad_read_wait);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1552) keypad_buflen = 0; /* flushes any eventual noisy keystroke */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1553)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1554) /* Let's create all known keys */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1555)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1556) for (keynum = 0; keypad_profile[keynum][0][0]; keynum++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1557) panel_bind_key(keypad_profile[keynum][0],
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1558) keypad_profile[keynum][1],
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1559) keypad_profile[keynum][2],
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1560) keypad_profile[keynum][3]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1561) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1562)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1563) init_scan_timer();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1564) keypad_initialized = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1565) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1566)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1567) /**************************************************/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1568) /* device initialization */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1569) /**************************************************/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1570)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1571) static void panel_attach(struct parport *port)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1572) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1573) struct pardev_cb panel_cb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1574)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1575) if (port->number != parport)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1576) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1577)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1578) if (pprt) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1579) pr_err("%s: port->number=%d parport=%d, already registered!\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1580) __func__, port->number, parport);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1581) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1582) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1583)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1584) memset(&panel_cb, 0, sizeof(panel_cb));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1585) panel_cb.private = &pprt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1586) /* panel_cb.flags = 0 should be PARPORT_DEV_EXCL? */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1587)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1588) pprt = parport_register_dev_model(port, "panel", &panel_cb, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1589) if (!pprt) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1590) pr_err("%s: port->number=%d parport=%d, parport_register_device() failed\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1591) __func__, port->number, parport);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1592) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1593) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1594)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1595) if (parport_claim(pprt)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1596) pr_err("could not claim access to parport%d. Aborting.\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1597) parport);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1598) goto err_unreg_device;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1599) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1600)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1601) /* must init LCD first, just in case an IRQ from the keypad is
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1602) * generated at keypad init
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1603) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1604) if (lcd.enabled) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1605) lcd_init();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1606) if (!lcd.charlcd || charlcd_register(lcd.charlcd))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1607) goto err_unreg_device;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1608) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1609)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1610) if (keypad.enabled) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1611) keypad_init();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1612) if (misc_register(&keypad_dev))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1613) goto err_lcd_unreg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1614) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1615) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1616)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1617) err_lcd_unreg:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1618) if (scan_timer.function)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1619) del_timer_sync(&scan_timer);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1620) if (lcd.enabled)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1621) charlcd_unregister(lcd.charlcd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1622) err_unreg_device:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1623) charlcd_free(lcd.charlcd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1624) lcd.charlcd = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1625) parport_unregister_device(pprt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1626) pprt = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1627) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1628)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1629) static void panel_detach(struct parport *port)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1630) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1631) if (port->number != parport)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1632) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1633)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1634) if (!pprt) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1635) pr_err("%s: port->number=%d parport=%d, nothing to unregister.\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1636) __func__, port->number, parport);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1637) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1638) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1639) if (scan_timer.function)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1640) del_timer_sync(&scan_timer);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1641)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1642) if (keypad.enabled) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1643) misc_deregister(&keypad_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1644) keypad_initialized = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1645) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1646)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1647) if (lcd.enabled) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1648) charlcd_unregister(lcd.charlcd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1649) lcd.initialized = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1650) charlcd_free(lcd.charlcd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1651) lcd.charlcd = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1652) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1653)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1654) /* TODO: free all input signals */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1655) parport_release(pprt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1656) parport_unregister_device(pprt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1657) pprt = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1658) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1659)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1660) static struct parport_driver panel_driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1661) .name = "panel",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1662) .match_port = panel_attach,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1663) .detach = panel_detach,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1664) .devmodel = true,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1665) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1666)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1667) /* init function */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1668) static int __init panel_init_module(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1669) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1670) int selected_keypad_type = NOT_SET, err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1671)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1672) /* take care of an eventual profile */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1673) switch (profile) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1674) case PANEL_PROFILE_CUSTOM:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1675) /* custom profile */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1676) selected_keypad_type = DEFAULT_KEYPAD_TYPE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1677) selected_lcd_type = DEFAULT_LCD_TYPE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1678) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1679) case PANEL_PROFILE_OLD:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1680) /* 8 bits, 2*16, old keypad */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1681) selected_keypad_type = KEYPAD_TYPE_OLD;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1682) selected_lcd_type = LCD_TYPE_OLD;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1683)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1684) /* TODO: This two are a little hacky, sort it out later */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1685) if (lcd_width == NOT_SET)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1686) lcd_width = 16;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1687) if (lcd_hwidth == NOT_SET)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1688) lcd_hwidth = 16;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1689) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1690) case PANEL_PROFILE_NEW:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1691) /* serial, 2*16, new keypad */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1692) selected_keypad_type = KEYPAD_TYPE_NEW;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1693) selected_lcd_type = LCD_TYPE_KS0074;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1694) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1695) case PANEL_PROFILE_HANTRONIX:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1696) /* 8 bits, 2*16 hantronix-like, no keypad */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1697) selected_keypad_type = KEYPAD_TYPE_NONE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1698) selected_lcd_type = LCD_TYPE_HANTRONIX;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1699) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1700) case PANEL_PROFILE_NEXCOM:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1701) /* generic 8 bits, 2*16, nexcom keypad, eg. Nexcom. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1702) selected_keypad_type = KEYPAD_TYPE_NEXCOM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1703) selected_lcd_type = LCD_TYPE_NEXCOM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1704) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1705) case PANEL_PROFILE_LARGE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1706) /* 8 bits, 2*40, old keypad */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1707) selected_keypad_type = KEYPAD_TYPE_OLD;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1708) selected_lcd_type = LCD_TYPE_OLD;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1709) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1710) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1711)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1712) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1713) * Overwrite selection with module param values (both keypad and lcd),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1714) * where the deprecated params have lower prio.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1715) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1716) if (keypad_enabled != NOT_SET)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1717) selected_keypad_type = keypad_enabled;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1718) if (keypad_type != NOT_SET)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1719) selected_keypad_type = keypad_type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1720)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1721) keypad.enabled = (selected_keypad_type > 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1722)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1723) if (lcd_enabled != NOT_SET)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1724) selected_lcd_type = lcd_enabled;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1725) if (lcd_type != NOT_SET)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1726) selected_lcd_type = lcd_type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1727)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1728) lcd.enabled = (selected_lcd_type > 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1729)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1730) if (lcd.enabled) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1731) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1732) * Init lcd struct with load-time values to preserve exact
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1733) * current functionality (at least for now).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1734) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1735) lcd.charset = lcd_charset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1736) lcd.proto = lcd_proto;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1737) lcd.pins.e = lcd_e_pin;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1738) lcd.pins.rs = lcd_rs_pin;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1739) lcd.pins.rw = lcd_rw_pin;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1740) lcd.pins.cl = lcd_cl_pin;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1741) lcd.pins.da = lcd_da_pin;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1742) lcd.pins.bl = lcd_bl_pin;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1743) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1744)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1745) switch (selected_keypad_type) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1746) case KEYPAD_TYPE_OLD:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1747) keypad_profile = old_keypad_profile;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1748) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1749) case KEYPAD_TYPE_NEW:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1750) keypad_profile = new_keypad_profile;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1751) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1752) case KEYPAD_TYPE_NEXCOM:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1753) keypad_profile = nexcom_keypad_profile;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1754) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1755) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1756) keypad_profile = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1757) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1758) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1759)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1760) if (!lcd.enabled && !keypad.enabled) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1761) /* no device enabled, let's exit */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1762) pr_err("panel driver disabled.\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1763) return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1764) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1765)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1766) err = parport_register_driver(&panel_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1767) if (err) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1768) pr_err("could not register with parport. Aborting.\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1769) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1770) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1771)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1772) if (pprt)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1773) pr_info("panel driver registered on parport%d (io=0x%lx).\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1774) parport, pprt->port->base);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1775) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1776) pr_info("panel driver not yet registered\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1777) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1778) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1779)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1780) static void __exit panel_cleanup_module(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1781) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1782) parport_unregister_driver(&panel_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1783) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1784)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1785) module_init(panel_init_module);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1786) module_exit(panel_cleanup_module);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1787) MODULE_AUTHOR("Willy Tarreau");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1788) MODULE_LICENSE("GPL");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1789)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1790) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1791) * Local variables:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1792) * c-indent-level: 4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1793) * tab-width: 8
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1794) * End:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1795) */
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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