^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0-or-later
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * Copyright (C) 2010-2013 Bluecherry, LLC <https://www.bluecherrydvr.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * Original author:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) * Ben Collins <bcollins@ubuntu.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) * Additional work by:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) * John Brooks <john.brooks@bluecherry.net>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <linux/kernel.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)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include "solo6x10.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) /* Control */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #define EE_SHIFT_CLK 0x04
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #define EE_CS 0x08
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #define EE_DATA_WRITE 0x02
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) #define EE_DATA_READ 0x01
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) #define EE_ENB (0x80 | EE_CS)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) #define eeprom_delay() udelay(100)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) #if 0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) #define eeprom_delay() solo_reg_read(solo_dev, SOLO_EEPROM_CTRL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) #define eeprom_delay() ({ \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) int i, ret; \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) udelay(100); \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) for (i = ret = 0; i < 1000 && !ret; i++) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) ret = solo_eeprom_reg_read(solo_dev); \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) })
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) #define ADDR_LEN 6
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) /* Commands */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) #define EE_EWEN_CMD 4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) #define EE_EWDS_CMD 4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) #define EE_WRITE_CMD 5
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) #define EE_READ_CMD 6
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) #define EE_ERASE_CMD 7
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) static unsigned int solo_eeprom_reg_read(struct solo_dev *solo_dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) return solo_reg_read(solo_dev, SOLO_EEPROM_CTRL) & EE_DATA_READ;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) static void solo_eeprom_reg_write(struct solo_dev *solo_dev, u32 data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) solo_reg_write(solo_dev, SOLO_EEPROM_CTRL, data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) eeprom_delay();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) static void solo_eeprom_cmd(struct solo_dev *solo_dev, int cmd)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) solo_eeprom_reg_write(solo_dev, SOLO_EEPROM_ACCESS_EN);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) solo_eeprom_reg_write(solo_dev, SOLO_EEPROM_ENABLE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) for (i = 4 + ADDR_LEN; i >= 0; i--) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) int dataval = (cmd & (1 << i)) ? EE_DATA_WRITE : 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) solo_eeprom_reg_write(solo_dev, SOLO_EEPROM_ENABLE | dataval);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) solo_eeprom_reg_write(solo_dev, SOLO_EEPROM_ENABLE |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) EE_SHIFT_CLK | dataval);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) solo_eeprom_reg_write(solo_dev, SOLO_EEPROM_ENABLE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) unsigned int solo_eeprom_ewen(struct solo_dev *solo_dev, int w_en)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) int ewen_cmd = (w_en ? 0x3f : 0) | (EE_EWEN_CMD << ADDR_LEN);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) unsigned int retval = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) solo_eeprom_cmd(solo_dev, ewen_cmd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) for (i = 0; i < 16; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) solo_eeprom_reg_write(solo_dev, SOLO_EEPROM_ENABLE |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) EE_SHIFT_CLK);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) retval = (retval << 1) | solo_eeprom_reg_read(solo_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) solo_eeprom_reg_write(solo_dev, SOLO_EEPROM_ENABLE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) retval = (retval << 1) | solo_eeprom_reg_read(solo_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) solo_eeprom_reg_write(solo_dev, ~EE_CS);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) retval = (retval << 1) | solo_eeprom_reg_read(solo_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) return retval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) __be16 solo_eeprom_read(struct solo_dev *solo_dev, int loc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) int read_cmd = loc | (EE_READ_CMD << ADDR_LEN);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) u16 retval = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) solo_eeprom_cmd(solo_dev, read_cmd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) for (i = 0; i < 16; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) solo_eeprom_reg_write(solo_dev, SOLO_EEPROM_ENABLE |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) EE_SHIFT_CLK);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) retval = (retval << 1) | solo_eeprom_reg_read(solo_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) solo_eeprom_reg_write(solo_dev, SOLO_EEPROM_ENABLE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) solo_eeprom_reg_write(solo_dev, ~EE_CS);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) return (__force __be16)retval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) int solo_eeprom_write(struct solo_dev *solo_dev, int loc,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) __be16 data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) int write_cmd = loc | (EE_WRITE_CMD << ADDR_LEN);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) unsigned int retval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) solo_eeprom_cmd(solo_dev, write_cmd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) for (i = 15; i >= 0; i--) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) unsigned int dataval = ((__force unsigned)data >> i) & 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) solo_eeprom_reg_write(solo_dev, EE_ENB);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) solo_eeprom_reg_write(solo_dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) EE_ENB | (dataval << 1) | EE_SHIFT_CLK);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) solo_eeprom_reg_write(solo_dev, EE_ENB);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) solo_eeprom_reg_write(solo_dev, ~EE_CS);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) solo_eeprom_reg_write(solo_dev, EE_ENB);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) for (i = retval = 0; i < 10000 && !retval; i++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) retval = solo_eeprom_reg_read(solo_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) solo_eeprom_reg_write(solo_dev, ~EE_CS);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) return !retval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) }
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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