Orange Pi5 kernel

^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)  * lms501kf03 TFT LCD panel driver.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   4)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   5)  * Copyright (c) 2012 Samsung Electronics Co., Ltd.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   6)  * Author: Jingoo Han  <jg1.han@samsung.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   7)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   8) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   9) #include <linux/backlight.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  10) #include <linux/delay.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  11) #include <linux/fb.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  12) #include <linux/lcd.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  13) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  14) #include <linux/spi/spi.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  15) #include <linux/wait.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  16) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  17) #define COMMAND_ONLY		0x00
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  18) #define DATA_ONLY		0x01
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  19) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  20) struct lms501kf03 {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  21) 	struct device			*dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  22) 	struct spi_device		*spi;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  23) 	unsigned int			power;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  24) 	struct lcd_device		*ld;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  25) 	struct lcd_platform_data	*lcd_pd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  26) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  27) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  28) static const unsigned char seq_password[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  29) 	0xb9, 0xff, 0x83, 0x69,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  30) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  31) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  32) static const unsigned char seq_power[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  33) 	0xb1, 0x01, 0x00, 0x34, 0x06, 0x00, 0x14, 0x14, 0x20, 0x28,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  34) 	0x12, 0x12, 0x17, 0x0a, 0x01, 0xe6, 0xe6, 0xe6, 0xe6, 0xe6,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  35) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  36) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  37) static const unsigned char seq_display[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  38) 	0xb2, 0x00, 0x2b, 0x03, 0x03, 0x70, 0x00, 0xff, 0x00, 0x00,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  39) 	0x00, 0x00, 0x03, 0x03, 0x00, 0x01,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  40) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  41) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  42) static const unsigned char seq_rgb_if[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  43) 	0xb3, 0x09,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  44) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  45) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  46) static const unsigned char seq_display_inv[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  47) 	0xb4, 0x01, 0x08, 0x77, 0x0e, 0x06,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  48) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  49) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  50) static const unsigned char seq_vcom[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  51) 	0xb6, 0x4c, 0x2e,
^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 const unsigned char seq_gate[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  55) 	0xd5, 0x00, 0x05, 0x03, 0x29, 0x01, 0x07, 0x17, 0x68, 0x13,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  56) 	0x37, 0x20, 0x31, 0x8a, 0x46, 0x9b, 0x57, 0x13, 0x02, 0x75,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  57) 	0xb9, 0x64, 0xa8, 0x07, 0x0f, 0x04, 0x07,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  58) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  59) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  60) static const unsigned char seq_panel[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  61) 	0xcc, 0x02,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  62) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  63) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  64) static const unsigned char seq_col_mod[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  65) 	0x3a, 0x77,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  66) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  67) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  68) static const unsigned char seq_w_gamma[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  69) 	0xe0, 0x00, 0x04, 0x09, 0x0f, 0x1f, 0x3f, 0x1f, 0x2f, 0x0a,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  70) 	0x0f, 0x10, 0x16, 0x18, 0x16, 0x17, 0x0d, 0x15, 0x00, 0x04,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  71) 	0x09, 0x0f, 0x38, 0x3f, 0x20, 0x39, 0x0a, 0x0f, 0x10, 0x16,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  72) 	0x18, 0x16, 0x17, 0x0d, 0x15,
^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) static const unsigned char seq_rgb_gamma[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  76) 	0xc1, 0x01, 0x03, 0x07, 0x0f, 0x1a, 0x22, 0x2c, 0x33, 0x3c,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  77) 	0x46, 0x4f, 0x58, 0x60, 0x69, 0x71, 0x79, 0x82, 0x89, 0x92,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  78) 	0x9a, 0xa1, 0xa9, 0xb1, 0xb9, 0xc1, 0xc9, 0xcf, 0xd6, 0xde,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  79) 	0xe5, 0xec, 0xf3, 0xf9, 0xff, 0xdd, 0x39, 0x07, 0x1c, 0xcb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  80) 	0xab, 0x5f, 0x49, 0x80, 0x03, 0x07, 0x0f, 0x19, 0x20, 0x2a,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  81) 	0x31, 0x39, 0x42, 0x4b, 0x53, 0x5b, 0x63, 0x6b, 0x73, 0x7b,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  82) 	0x83, 0x8a, 0x92, 0x9b, 0xa2, 0xaa, 0xb2, 0xba, 0xc2, 0xca,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  83) 	0xd0, 0xd8, 0xe1, 0xe8, 0xf0, 0xf8, 0xff, 0xf7, 0xd8, 0xbe,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  84) 	0xa7, 0x39, 0x40, 0x85, 0x8c, 0xc0, 0x04, 0x07, 0x0c, 0x17,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  85) 	0x1c, 0x23, 0x2b, 0x34, 0x3b, 0x43, 0x4c, 0x54, 0x5b, 0x63,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  86) 	0x6a, 0x73, 0x7a, 0x82, 0x8a, 0x91, 0x98, 0xa1, 0xa8, 0xb0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  87) 	0xb7, 0xc1, 0xc9, 0xcf, 0xd9, 0xe3, 0xea, 0xf4, 0xff, 0x00,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  88) 	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  89) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  90) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  91) static const unsigned char seq_sleep_out[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  92) 	0x11,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  93) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  94) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  95) static const unsigned char seq_display_on[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  96) 	0x29,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  97) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  98) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  99) static const unsigned char seq_display_off[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) 	0x10,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) static int lms501kf03_spi_write_byte(struct lms501kf03 *lcd, int addr, int data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) 	u16 buf[1];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) 	struct spi_message msg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) 	struct spi_transfer xfer = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) 		.len		= 2,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) 		.tx_buf		= buf,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) 	};
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) 	buf[0] = (addr << 8) | data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) 	spi_message_init(&msg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) 	spi_message_add_tail(&xfer, &msg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) 	return spi_sync(lcd->spi, &msg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) static int lms501kf03_spi_write(struct lms501kf03 *lcd, unsigned char address,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) 				unsigned char command)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) 	return lms501kf03_spi_write_byte(lcd, address, command);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) static int lms501kf03_panel_send_sequence(struct lms501kf03 *lcd,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) 					const unsigned char *wbuf,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) 					unsigned int len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) 	int ret = 0, i = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) 	while (i < len) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) 		if (i == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) 			ret = lms501kf03_spi_write(lcd, COMMAND_ONLY, wbuf[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) 		else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) 			ret = lms501kf03_spi_write(lcd, DATA_ONLY, wbuf[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) 		if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) 			break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) 		i += 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) 	return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) static int lms501kf03_ldi_init(struct lms501kf03 *lcd)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) 	int ret, i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) 	static const unsigned char *init_seq[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) 		seq_password,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) 		seq_power,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) 		seq_display,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) 		seq_rgb_if,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) 		seq_display_inv,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) 		seq_vcom,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) 		seq_gate,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) 		seq_panel,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) 		seq_col_mod,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) 		seq_w_gamma,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) 		seq_rgb_gamma,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) 		seq_sleep_out,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) 	};
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) 	static const unsigned int size_seq[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) 		ARRAY_SIZE(seq_password),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) 		ARRAY_SIZE(seq_power),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) 		ARRAY_SIZE(seq_display),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) 		ARRAY_SIZE(seq_rgb_if),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) 		ARRAY_SIZE(seq_display_inv),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) 		ARRAY_SIZE(seq_vcom),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) 		ARRAY_SIZE(seq_gate),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) 		ARRAY_SIZE(seq_panel),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) 		ARRAY_SIZE(seq_col_mod),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) 		ARRAY_SIZE(seq_w_gamma),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) 		ARRAY_SIZE(seq_rgb_gamma),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) 		ARRAY_SIZE(seq_sleep_out),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) 	};
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) 	for (i = 0; i < ARRAY_SIZE(init_seq); i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) 		ret = lms501kf03_panel_send_sequence(lcd, init_seq[i],
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) 						size_seq[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) 		if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) 			break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) 	/*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) 	 * According to the datasheet, 120ms delay time is required.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) 	 * After sleep out sequence, command is blocked for 120ms.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) 	 * Thus, LDI should wait for 120ms.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) 	 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) 	msleep(120);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) 	return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) static int lms501kf03_ldi_enable(struct lms501kf03 *lcd)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) 	return lms501kf03_panel_send_sequence(lcd, seq_display_on,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) 					ARRAY_SIZE(seq_display_on));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) static int lms501kf03_ldi_disable(struct lms501kf03 *lcd)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) 	return lms501kf03_panel_send_sequence(lcd, seq_display_off,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) 					ARRAY_SIZE(seq_display_off));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) static int lms501kf03_power_is_on(int power)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) 	return (power) <= FB_BLANK_NORMAL;
^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) static int lms501kf03_power_on(struct lms501kf03 *lcd)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) 	int ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) 	struct lcd_platform_data *pd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) 	pd = lcd->lcd_pd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) 	if (!pd->power_on) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) 		dev_err(lcd->dev, "power_on is NULL.\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) 		return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) 	pd->power_on(lcd->ld, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) 	msleep(pd->power_on_delay);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) 	if (!pd->reset) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) 		dev_err(lcd->dev, "reset is NULL.\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) 		return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) 	pd->reset(lcd->ld);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) 	msleep(pd->reset_delay);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) 	ret = lms501kf03_ldi_init(lcd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) 	if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) 		dev_err(lcd->dev, "failed to initialize ldi.\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) 		return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) 	ret = lms501kf03_ldi_enable(lcd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) 	if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) 		dev_err(lcd->dev, "failed to enable ldi.\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) 		return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) static int lms501kf03_power_off(struct lms501kf03 *lcd)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) 	int ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) 	struct lcd_platform_data *pd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) 	pd = lcd->lcd_pd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) 	ret = lms501kf03_ldi_disable(lcd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) 	if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) 		dev_err(lcd->dev, "lcd setting failed.\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) 		return -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) 	msleep(pd->power_off_delay);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) 	pd->power_on(lcd->ld, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) static int lms501kf03_power(struct lms501kf03 *lcd, int power)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) 	int ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) 	if (lms501kf03_power_is_on(power) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) 		!lms501kf03_power_is_on(lcd->power))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) 		ret = lms501kf03_power_on(lcd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) 	else if (!lms501kf03_power_is_on(power) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) 		lms501kf03_power_is_on(lcd->power))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) 		ret = lms501kf03_power_off(lcd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) 	if (!ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) 		lcd->power = power;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) 	return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) static int lms501kf03_get_power(struct lcd_device *ld)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) 	struct lms501kf03 *lcd = lcd_get_data(ld);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) 	return lcd->power;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) static int lms501kf03_set_power(struct lcd_device *ld, int power)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) 	struct lms501kf03 *lcd = lcd_get_data(ld);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) 	if (power != FB_BLANK_UNBLANK && power != FB_BLANK_POWERDOWN &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) 		power != FB_BLANK_NORMAL) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) 		dev_err(lcd->dev, "power value should be 0, 1 or 4.\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) 		return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) 	return lms501kf03_power(lcd, power);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) static struct lcd_ops lms501kf03_lcd_ops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) 	.get_power = lms501kf03_get_power,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) 	.set_power = lms501kf03_set_power,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) static int lms501kf03_probe(struct spi_device *spi)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) 	struct lms501kf03 *lcd = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) 	struct lcd_device *ld = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) 	int ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) 	lcd = devm_kzalloc(&spi->dev, sizeof(struct lms501kf03), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) 	if (!lcd)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) 		return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) 	/* lms501kf03 lcd panel uses 3-wire 9-bit SPI Mode. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) 	spi->bits_per_word = 9;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) 	ret = spi_setup(spi);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) 	if (ret < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) 		dev_err(&spi->dev, "spi setup failed.\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) 		return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) 	lcd->spi = spi;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) 	lcd->dev = &spi->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) 	lcd->lcd_pd = dev_get_platdata(&spi->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) 	if (!lcd->lcd_pd) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) 		dev_err(&spi->dev, "platform data is NULL\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) 		return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) 	ld = devm_lcd_device_register(&spi->dev, "lms501kf03", &spi->dev, lcd,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) 					&lms501kf03_lcd_ops);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) 	if (IS_ERR(ld))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) 		return PTR_ERR(ld);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) 	lcd->ld = ld;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) 	if (!lcd->lcd_pd->lcd_enabled) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) 		/*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) 		 * if lcd panel was off from bootloader then
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350) 		 * current lcd status is powerdown and then
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) 		 * it enables lcd panel.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) 		 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) 		lcd->power = FB_BLANK_POWERDOWN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) 		lms501kf03_power(lcd, FB_BLANK_UNBLANK);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) 	} else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) 		lcd->power = FB_BLANK_UNBLANK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360) 	spi_set_drvdata(spi, lcd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362) 	dev_info(&spi->dev, "lms501kf03 panel driver has been probed.\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367) static int lms501kf03_remove(struct spi_device *spi)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369) 	struct lms501kf03 *lcd = spi_get_drvdata(spi);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371) 	lms501kf03_power(lcd, FB_BLANK_POWERDOWN);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) #ifdef CONFIG_PM_SLEEP
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376) static int lms501kf03_suspend(struct device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378) 	struct lms501kf03 *lcd = dev_get_drvdata(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380) 	dev_dbg(dev, "lcd->power = %d\n", lcd->power);
^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) 	 * when lcd panel is suspend, lcd panel becomes off
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384) 	 * regardless of status.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385) 	 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386) 	return lms501kf03_power(lcd, FB_BLANK_POWERDOWN);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389) static int lms501kf03_resume(struct device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391) 	struct lms501kf03 *lcd = dev_get_drvdata(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393) 	lcd->power = FB_BLANK_POWERDOWN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395) 	return lms501kf03_power(lcd, FB_BLANK_UNBLANK);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399) static SIMPLE_DEV_PM_OPS(lms501kf03_pm_ops, lms501kf03_suspend,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400) 			lms501kf03_resume);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402) static void lms501kf03_shutdown(struct spi_device *spi)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404) 	struct lms501kf03 *lcd = spi_get_drvdata(spi);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406) 	lms501kf03_power(lcd, FB_BLANK_POWERDOWN);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409) static struct spi_driver lms501kf03_driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 410) 	.driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 411) 		.name	= "lms501kf03",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 412) 		.pm	= &lms501kf03_pm_ops,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 413) 	},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 414) 	.probe		= lms501kf03_probe,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 415) 	.remove		= lms501kf03_remove,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 416) 	.shutdown	= lms501kf03_shutdown,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 417) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 418) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 419) module_spi_driver(lms501kf03_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 420) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 421) MODULE_AUTHOR("Jingoo Han <jg1.han@samsung.com>");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 422) MODULE_DESCRIPTION("lms501kf03 LCD Driver");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 423) MODULE_LICENSE("GPL");