^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0-only
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * lms283gf05.c -- support for Samsung LMS283GF05 LCD
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * Copyright (c) 2009 Marek Vasut <marek.vasut@gmail.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) #include <linux/device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) #include <linux/kernel.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/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <linux/gpio.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <linux/lcd.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include <linux/spi/spi.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include <linux/spi/lms283gf05.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) struct lms283gf05_state {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) struct spi_device *spi;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) struct lcd_device *ld;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) struct lms283gf05_seq {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) unsigned char reg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) unsigned short value;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) unsigned char delay;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) /* Magic sequences supplied by manufacturer, for details refer to datasheet */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) static const struct lms283gf05_seq disp_initseq[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) /* REG, VALUE, DELAY */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) { 0x07, 0x0000, 0 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) { 0x13, 0x0000, 10 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) { 0x11, 0x3004, 0 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) { 0x14, 0x200F, 0 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) { 0x10, 0x1a20, 0 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) { 0x13, 0x0040, 50 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) { 0x13, 0x0060, 0 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) { 0x13, 0x0070, 200 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) { 0x01, 0x0127, 0 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) { 0x02, 0x0700, 0 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) { 0x03, 0x1030, 0 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) { 0x08, 0x0208, 0 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) { 0x0B, 0x0620, 0 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) { 0x0C, 0x0110, 0 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) { 0x30, 0x0120, 0 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) { 0x31, 0x0127, 0 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) { 0x32, 0x0000, 0 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) { 0x33, 0x0503, 0 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) { 0x34, 0x0727, 0 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) { 0x35, 0x0124, 0 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) { 0x36, 0x0706, 0 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) { 0x37, 0x0701, 0 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) { 0x38, 0x0F00, 0 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) { 0x39, 0x0F00, 0 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) { 0x40, 0x0000, 0 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) { 0x41, 0x0000, 0 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) { 0x42, 0x013f, 0 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) { 0x43, 0x0000, 0 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) { 0x44, 0x013f, 0 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) { 0x45, 0x0000, 0 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) { 0x46, 0xef00, 0 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) { 0x47, 0x013f, 0 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) { 0x48, 0x0000, 0 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) { 0x07, 0x0015, 30 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) { 0x07, 0x0017, 0 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) { 0x20, 0x0000, 0 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) { 0x21, 0x0000, 0 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) { 0x22, 0x0000, 0 }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) static const struct lms283gf05_seq disp_pdwnseq[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) { 0x07, 0x0016, 30 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) { 0x07, 0x0004, 0 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) { 0x10, 0x0220, 20 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) { 0x13, 0x0060, 50 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) { 0x13, 0x0040, 50 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) { 0x13, 0x0000, 0 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) { 0x10, 0x0000, 0 }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) static void lms283gf05_reset(unsigned long gpio, bool inverted)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) gpio_set_value(gpio, !inverted);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) mdelay(100);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) gpio_set_value(gpio, inverted);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) mdelay(20);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) gpio_set_value(gpio, !inverted);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) mdelay(20);
^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 void lms283gf05_toggle(struct spi_device *spi,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) const struct lms283gf05_seq *seq, int sz)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) char buf[3];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) for (i = 0; i < sz; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) buf[0] = 0x74;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) buf[1] = 0x00;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) buf[2] = seq[i].reg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) spi_write(spi, buf, 3);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) buf[0] = 0x76;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) buf[1] = seq[i].value >> 8;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) buf[2] = seq[i].value & 0xff;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) spi_write(spi, buf, 3);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) mdelay(seq[i].delay);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) static int lms283gf05_power_set(struct lcd_device *ld, int power)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) struct lms283gf05_state *st = lcd_get_data(ld);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) struct spi_device *spi = st->spi;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) struct lms283gf05_pdata *pdata = dev_get_platdata(&spi->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) if (power <= FB_BLANK_NORMAL) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) if (pdata)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) lms283gf05_reset(pdata->reset_gpio,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) pdata->reset_inverted);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) lms283gf05_toggle(spi, disp_initseq, ARRAY_SIZE(disp_initseq));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) lms283gf05_toggle(spi, disp_pdwnseq, ARRAY_SIZE(disp_pdwnseq));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) if (pdata)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) gpio_set_value(pdata->reset_gpio,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) pdata->reset_inverted);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) static struct lcd_ops lms_ops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) .set_power = lms283gf05_power_set,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) .get_power = NULL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) static int lms283gf05_probe(struct spi_device *spi)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) struct lms283gf05_state *st;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) struct lms283gf05_pdata *pdata = dev_get_platdata(&spi->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) struct lcd_device *ld;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) int ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) if (pdata != NULL) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) ret = devm_gpio_request_one(&spi->dev, pdata->reset_gpio,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) GPIOF_DIR_OUT | (!pdata->reset_inverted ?
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) GPIOF_INIT_HIGH : GPIOF_INIT_LOW),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) "LMS283GF05 RESET");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) st = devm_kzalloc(&spi->dev, sizeof(struct lms283gf05_state),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) if (st == NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) ld = devm_lcd_device_register(&spi->dev, "lms283gf05", &spi->dev, st,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) &lms_ops);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) if (IS_ERR(ld))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) return PTR_ERR(ld);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) st->spi = spi;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) st->ld = ld;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) spi_set_drvdata(spi, st);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) /* kick in the LCD */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) if (pdata)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) lms283gf05_reset(pdata->reset_gpio, pdata->reset_inverted);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) lms283gf05_toggle(spi, disp_initseq, ARRAY_SIZE(disp_initseq));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) static struct spi_driver lms283gf05_driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) .driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) .name = "lms283gf05",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) .probe = lms283gf05_probe,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) module_spi_driver(lms283gf05_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) MODULE_AUTHOR("Marek Vasut <marek.vasut@gmail.com>");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) MODULE_DESCRIPTION("LCD283GF05 LCD");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) MODULE_LICENSE("GPL v2");
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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