^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) // handle au0828 IR remotes via linux kernel input layer.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) //
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) // Copyright (c) 2014 Mauro Carvalho Chehab <mchehab@samsung.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) // Copyright (c) 2014 Samsung Electronics Co., Ltd.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) //
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) // Based on em28xx-input.c.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) #include "au0828.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <linux/init.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <linux/delay.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <linux/interrupt.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include <linux/usb.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include <linux/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #include <media/rc-core.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) static int disable_ir;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) module_param(disable_ir, int, 0444);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) MODULE_PARM_DESC(disable_ir, "disable infrared remote support");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) struct au0828_rc {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) struct au0828_dev *dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) struct rc_dev *rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) char name[32];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) char phys[32];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) /* poll decoder */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) int polling;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) struct delayed_work work;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) /* i2c slave address of external device (if used) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) u16 i2c_dev_addr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) int (*get_key_i2c)(struct au0828_rc *ir);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) * AU8522 has a builtin IR receiver. Add functions to get IR from it
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) static int au8522_rc_write(struct au0828_rc *ir, u16 reg, u8 data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) int rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) char buf[] = { (reg >> 8) | 0x80, reg & 0xff, data };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) struct i2c_msg msg = { .addr = ir->i2c_dev_addr, .flags = 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) .buf = buf, .len = sizeof(buf) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) rc = i2c_transfer(ir->dev->i2c_client.adapter, &msg, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) if (rc < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) return (rc == 1) ? 0 : -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) static int au8522_rc_read(struct au0828_rc *ir, u16 reg, int val,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) char *buf, int size)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) int rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) char obuf[3];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) struct i2c_msg msg[2] = { { .addr = ir->i2c_dev_addr, .flags = 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) .buf = obuf, .len = 2 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) { .addr = ir->i2c_dev_addr, .flags = I2C_M_RD,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) .buf = buf, .len = size } };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) obuf[0] = 0x40 | reg >> 8;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) obuf[1] = reg & 0xff;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) if (val >= 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) obuf[2] = val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) msg[0].len++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) rc = i2c_transfer(ir->dev->i2c_client.adapter, msg, 2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) if (rc < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) return (rc == 2) ? 0 : -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) static int au8522_rc_andor(struct au0828_rc *ir, u16 reg, u8 mask, u8 value)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) int rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) char buf, oldbuf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) rc = au8522_rc_read(ir, reg, -1, &buf, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) if (rc < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) oldbuf = buf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) buf = (buf & ~mask) | (value & mask);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) /* Nothing to do, just return */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) if (buf == oldbuf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) return au8522_rc_write(ir, reg, buf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) #define au8522_rc_set(ir, reg, bit) au8522_rc_andor(ir, (reg), (bit), (bit))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) #define au8522_rc_clear(ir, reg, bit) au8522_rc_andor(ir, (reg), (bit), 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) /* Remote Controller time units */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) #define AU8522_UNIT 200 /* us */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) #define NEC_START_SPACE (4500 / AU8522_UNIT)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) #define NEC_START_PULSE (563 * 16)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) #define RC5_START_SPACE (4 * AU8522_UNIT)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) #define RC5_START_PULSE 889
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) static int au0828_get_key_au8522(struct au0828_rc *ir)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) unsigned char buf[40];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) struct ir_raw_event rawir = {};
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) int i, j, rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) int prv_bit, bit, width;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) bool first = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) /* do nothing if device is disconnected */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) if (test_bit(DEV_DISCONNECTED, &ir->dev->dev_state))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) /* Check IR int */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) rc = au8522_rc_read(ir, 0xe1, -1, buf, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) if (rc < 0 || !(buf[0] & (1 << 4))) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) /* Be sure that IR is enabled */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) au8522_rc_set(ir, 0xe0, 1 << 4);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) /* Something arrived. Get the data */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) rc = au8522_rc_read(ir, 0xe3, 0x11, buf, sizeof(buf));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) if (rc < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) /* Disable IR */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) au8522_rc_clear(ir, 0xe0, 1 << 4);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) /* Enable IR */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) au8522_rc_set(ir, 0xe0, 1 << 4);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) dprintk(16, "RC data received: %*ph\n", 40, buf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) prv_bit = (buf[0] >> 7) & 0x01;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) width = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) for (i = 0; i < sizeof(buf); i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) for (j = 7; j >= 0; j--) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) bit = (buf[i] >> j) & 0x01;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) if (bit == prv_bit) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) width++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) * Fix an au8522 bug: the first pulse event
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) * is lost. So, we need to fake it, based on the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) * protocol. That means that not all raw decoders
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) * will work, as we need to add a hack for each
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) * protocol, based on the first space.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) * So, we only support RC5 and NEC.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) if (first) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) first = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) rawir.pulse = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) if (width > NEC_START_SPACE - 2 &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) width < NEC_START_SPACE + 2) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) /* NEC protocol */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) rawir.duration = NEC_START_PULSE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) dprintk(16, "Storing NEC start %s with duration %d",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) rawir.pulse ? "pulse" : "space",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) rawir.duration);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) /* RC5 protocol */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) rawir.duration = RC5_START_PULSE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) dprintk(16, "Storing RC5 start %s with duration %d",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) rawir.pulse ? "pulse" : "space",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) rawir.duration);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) ir_raw_event_store(ir->rc, &rawir);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) rawir.pulse = prv_bit ? false : true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) rawir.duration = AU8522_UNIT * width;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) dprintk(16, "Storing %s with duration %d",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) rawir.pulse ? "pulse" : "space",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) rawir.duration);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) ir_raw_event_store(ir->rc, &rawir);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) width = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) prv_bit = bit;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) rawir.pulse = prv_bit ? false : true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) rawir.duration = AU8522_UNIT * width;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) dprintk(16, "Storing end %s with duration %d",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) rawir.pulse ? "pulse" : "space",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) rawir.duration);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) ir_raw_event_store(ir->rc, &rawir);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) ir_raw_event_handle(ir->rc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) return 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) * Generic IR code
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) static void au0828_rc_work(struct work_struct *work)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) struct au0828_rc *ir = container_of(work, struct au0828_rc, work.work);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) int rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) rc = ir->get_key_i2c(ir);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) if (rc < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) pr_info("Error while getting RC scancode\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) schedule_delayed_work(&ir->work, msecs_to_jiffies(ir->polling));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) static int au0828_rc_start(struct rc_dev *rc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) struct au0828_rc *ir = rc->priv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) INIT_DELAYED_WORK(&ir->work, au0828_rc_work);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) /* Enable IR */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) au8522_rc_set(ir, 0xe0, 1 << 4);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) schedule_delayed_work(&ir->work, msecs_to_jiffies(ir->polling));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) static void au0828_rc_stop(struct rc_dev *rc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) struct au0828_rc *ir = rc->priv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) cancel_delayed_work_sync(&ir->work);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) /* do nothing if device is disconnected */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) if (!test_bit(DEV_DISCONNECTED, &ir->dev->dev_state)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) /* Disable IR */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) au8522_rc_clear(ir, 0xe0, 1 << 4);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) static int au0828_probe_i2c_ir(struct au0828_dev *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) int i = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) static const unsigned short addr_list[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) 0x47, I2C_CLIENT_END
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) while (addr_list[i] != I2C_CLIENT_END) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) if (i2c_probe_func_quick_read(dev->i2c_client.adapter,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) addr_list[i]) == 1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) return addr_list[i];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) i++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) int au0828_rc_register(struct au0828_dev *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) struct au0828_rc *ir;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) struct rc_dev *rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) int err = -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) u16 i2c_rc_dev_addr = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) if (!dev->board.has_ir_i2c || disable_ir)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) i2c_rc_dev_addr = au0828_probe_i2c_ir(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) if (!i2c_rc_dev_addr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) ir = kzalloc(sizeof(*ir), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) rc = rc_allocate_device(RC_DRIVER_IR_RAW);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) if (!ir || !rc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) goto error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) /* record handles to ourself */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) ir->dev = dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) dev->ir = ir;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) ir->rc = rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) rc->priv = ir;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) rc->open = au0828_rc_start;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) rc->close = au0828_rc_stop;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) if (dev->board.has_ir_i2c) { /* external i2c device */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) switch (dev->boardnr) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) case AU0828_BOARD_HAUPPAUGE_HVR950Q:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) rc->map_name = RC_MAP_HAUPPAUGE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) ir->get_key_i2c = au0828_get_key_au8522;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) err = -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) goto error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) ir->i2c_dev_addr = i2c_rc_dev_addr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) /* This is how often we ask the chip for IR information */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) ir->polling = 100; /* ms */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) /* init input device */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) snprintf(ir->name, sizeof(ir->name), "au0828 IR (%s)",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) dev->board.name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) usb_make_path(dev->usbdev, ir->phys, sizeof(ir->phys));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) strlcat(ir->phys, "/input0", sizeof(ir->phys));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) rc->device_name = ir->name;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) rc->input_phys = ir->phys;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) rc->input_id.bustype = BUS_USB;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) rc->input_id.version = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) rc->input_id.vendor = le16_to_cpu(dev->usbdev->descriptor.idVendor);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) rc->input_id.product = le16_to_cpu(dev->usbdev->descriptor.idProduct);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) rc->dev.parent = &dev->usbdev->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) rc->driver_name = "au0828-input";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) rc->allowed_protocols = RC_PROTO_BIT_NEC | RC_PROTO_BIT_NECX |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) RC_PROTO_BIT_NEC32 | RC_PROTO_BIT_RC5;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) /* all done */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) err = rc_register_device(rc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) goto error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) pr_info("Remote controller %s initialized\n", ir->name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) error:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) dev->ir = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) rc_free_device(rc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) kfree(ir);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) void au0828_rc_unregister(struct au0828_dev *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) struct au0828_rc *ir = dev->ir;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) /* skip detach on non attached boards */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) if (!ir)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359) rc_unregister_device(ir->rc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) /* done */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362) kfree(ir);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) dev->ir = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) int au0828_rc_suspend(struct au0828_dev *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) struct au0828_rc *ir = dev->ir;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) if (!ir)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373) pr_info("Stopping RC\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) cancel_delayed_work_sync(&ir->work);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377) /* Disable IR */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378) au8522_rc_clear(ir, 0xe0, 1 << 4);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383) int au0828_rc_resume(struct au0828_dev *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385) struct au0828_rc *ir = dev->ir;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387) if (!ir)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390) pr_info("Restarting RC\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392) /* Enable IR */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393) au8522_rc_set(ir, 0xe0, 1 << 4);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395) schedule_delayed_work(&ir->work, msecs_to_jiffies(ir->polling));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398) }
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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