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01793b3ddb
Add support for the LCD panel module used in Motorola Atrix 4G or Droid X2. Exact panel vendor and model are unknown. The panel has a 540x960 (qHD) resolution and uses 24 bit RGB per pixel. Signed-off-by: Svyatoslav Ryhel <clamor95@gmail.com>
309 lines
8.3 KiB
C
309 lines
8.3 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Motorola ATRIX 4G and DROID X2 DSI panel driver
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* Exact manufacturer and model unknown
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*
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* Copyright (c) 2025 Svyatoslav Ryhel <clamor95@gmail.com>
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*/
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#include <backlight.h>
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#include <dm.h>
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#include <panel.h>
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#include <log.h>
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#include <misc.h>
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#include <mipi_display.h>
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#include <mipi_dsi.h>
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#include <asm/gpio.h>
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#include <linux/delay.h>
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#include <linux/err.h>
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#include <power/regulator.h>
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struct mot_panel_priv {
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struct udevice *vdd;
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struct udevice *vddio;
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struct udevice *backlight;
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struct gpio_desc reset_gpio;
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};
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#define dsi_generic_write_seq(dsi, cmd, seq...) do { \
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static const u8 b[] = { cmd, seq }; \
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int ret; \
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ret = mipi_dsi_dcs_write_buffer(dsi, b, ARRAY_SIZE(b)); \
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if (ret < 0) \
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return ret; \
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} while (0)
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static struct display_timing default_timing = {
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.pixelclock.typ = 38250000,
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.hactive.typ = 540,
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.hfront_porch.typ = 32,
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.hback_porch.typ = 32,
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.hsync_len.typ = 16,
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.vactive.typ = 960,
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.vfront_porch.typ = 12,
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.vback_porch.typ = 12,
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.vsync_len.typ = 8,
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};
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static int mot_es2(struct mipi_dsi_device *dsi)
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{
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int ret;
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dsi_generic_write_seq(dsi, 0x55, 0x01);
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ret = mipi_dsi_dcs_exit_sleep_mode(dsi);
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if (ret < 0) {
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log_debug("%s: failed to exit sleep mode: %d\n", __func__, ret);
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return ret;
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}
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mdelay(120);
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dsi_generic_write_seq(dsi, 0xf4, 0x00, 0xbb, 0x46, 0x53, 0x0c, 0x49,
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0x74, 0x29, 0x12, 0x15, 0x2f, 0x2f, 0x04);
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dsi_generic_write_seq(dsi, 0xf8, 0x4b, 0x04, 0x10, 0x1a, 0x2c, 0x2c,
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0x2c, 0x2c, 0x14, 0x12);
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dsi_generic_write_seq(dsi, 0xb5, 0x03, 0x7f, 0x00, 0x80, 0xc7, 0x00);
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dsi_generic_write_seq(dsi, 0xb7, 0x66, 0xf6, 0x46, 0x9f, 0x90, 0x99,
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0xff, 0x80, 0x6d, 0x01);
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/* Gamma R */
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dsi_generic_write_seq(dsi, 0xf9, 0x04);
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dsi_generic_write_seq(dsi, 0xfa, 0x00, 0x2f, 0x30, 0x12, 0x0e, 0x0c,
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0x22, 0x27, 0x31, 0x2e, 0x07, 0x0f);
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dsi_generic_write_seq(dsi, 0xfb, 0x00, 0x2f, 0x30, 0x12, 0x0e, 0x0c,
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0x22, 0x27, 0x31, 0x2e, 0x07, 0x0f);
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/* Gamma G */
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dsi_generic_write_seq(dsi, 0xf9, 0x02);
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dsi_generic_write_seq(dsi, 0xfa, 0x00, 0x2f, 0x37, 0x15, 0x15, 0x11,
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0x1f, 0x25, 0x2d, 0x2a, 0x05, 0x0f);
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dsi_generic_write_seq(dsi, 0xfb, 0x00, 0x2f, 0x37, 0x15, 0x15, 0x11,
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0x1f, 0x25, 0x2d, 0x2a, 0x05, 0x0f);
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/* Gamma B */
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dsi_generic_write_seq(dsi, 0xf9, 0x01);
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dsi_generic_write_seq(dsi, 0xfa, 0x00, 0x2f, 0x3f, 0x16, 0x1f, 0x15,
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0x1f, 0x25, 0x2d, 0x2b, 0x06, 0x0b);
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dsi_generic_write_seq(dsi, 0xfb, 0x00, 0x2f, 0x3f, 0x16, 0x1f, 0x15,
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0x1f, 0x25, 0x2d, 0x2b, 0x06, 0x0b);
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/* Gamma W */
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dsi_generic_write_seq(dsi, 0xf9, 0x20);
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dsi_generic_write_seq(dsi, 0xfa, 0x00, 0x2f, 0x34, 0x15, 0x1a, 0x11,
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0x1f, 0x23, 0x2d, 0x29, 0x02, 0x08);
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dsi_generic_write_seq(dsi, 0xfb, 0x00, 0x2f, 0x34, 0x15, 0x1a, 0x11,
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0x1f, 0x23, 0x2d, 0x29, 0x02, 0x08);
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dsi_generic_write_seq(dsi, 0x53, 0x2c);
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dsi_generic_write_seq(dsi, 0x35, 0x00);
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return 0;
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}
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static int __maybe_unused mot_es4(struct mipi_dsi_device *dsi)
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{
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int ret;
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dsi_generic_write_seq(dsi, 0xd2, 0x04, 0x53);
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dsi_generic_write_seq(dsi, 0xd2, 0x05, 0x53);
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dsi_generic_write_seq(dsi, 0x55, 0x01);
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ret = mipi_dsi_dcs_exit_sleep_mode(dsi);
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if (ret < 0) {
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log_debug("%s: failed to exit sleep mode: %d\n", __func__, ret);
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return ret;
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}
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mdelay(120);
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dsi_generic_write_seq(dsi, 0xb5, 0x03, 0x7f, 0x0a, 0x80, 0xff, 0x00);
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dsi_generic_write_seq(dsi, 0xb7, 0x7a, 0xf7, 0x4d, 0x91, 0x90, 0xb3,
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0xff, 0x80, 0x6d, 0x01);
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dsi_generic_write_seq(dsi, 0xf4, 0x00, 0xbb, 0x46, 0x53, 0x0c, 0x49,
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0x74, 0x29, 0x12, 0x15, 0x37, 0x37, 0x04);
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dsi_generic_write_seq(dsi, 0xf8, 0x0a, 0x04, 0x10, 0x2a, 0x35, 0x35,
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0x35, 0x35, 0x21, 0x1a);
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/* Gamma R */
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dsi_generic_write_seq(dsi, 0xf9, 0x04);
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dsi_generic_write_seq(dsi, 0xfa, 0x08, 0x1c, 0x1b, 0x0f, 0x0f, 0x0a,
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0x1e, 0x22, 0x27, 0x26, 0x07, 0x0d);
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dsi_generic_write_seq(dsi, 0xfb, 0x08, 0x3c, 0x27, 0x0f, 0x0f, 0x0a,
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0x1e, 0x26, 0x31, 0x2f, 0x07, 0x0b);
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/* Gamma G */
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dsi_generic_write_seq(dsi, 0xf9, 0x02);
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dsi_generic_write_seq(dsi, 0xfa, 0x30, 0x14, 0x0f, 0x00, 0x06, 0x02,
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0x1e, 0x22, 0x27, 0x27, 0x08, 0x10);
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dsi_generic_write_seq(dsi, 0xfb, 0x30, 0x35, 0x0f, 0x00, 0x0a, 0x02,
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0x1c, 0x23, 0x31, 0x2f, 0x08, 0x0e);
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/* Gamma B */
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dsi_generic_write_seq(dsi, 0xf9, 0x01);
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dsi_generic_write_seq(dsi, 0xfa, 0x12, 0x1b, 0x26, 0x0e, 0x12, 0x0b,
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0x1e, 0x22, 0x27, 0x27, 0x06, 0x0c);
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dsi_generic_write_seq(dsi, 0xfb, 0x12, 0x3b, 0x2c, 0x12, 0x12, 0x0e,
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0x1e, 0x26, 0x31, 0x2f, 0x06, 0x0d);
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/* Gamma W */
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dsi_generic_write_seq(dsi, 0xf9, 0x20);
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dsi_generic_write_seq(dsi, 0xfa, 0x37, 0x1b, 0x09, 0x01, 0x06, 0x04,
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0x19, 0x19, 0x22, 0x24, 0x04, 0x15);
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dsi_generic_write_seq(dsi, 0xfb, 0x37, 0x3b, 0x17, 0x01, 0x0a, 0x04,
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0x19, 0x1d, 0x2c, 0x2c, 0x04, 0x13);
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dsi_generic_write_seq(dsi, 0x53, 0x2c);
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dsi_generic_write_seq(dsi, 0x35, 0x00);
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dsi_generic_write_seq(dsi, 0xc3, 0x01, 0x4e);
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return 0;
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}
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static int mot_panel_enable_backlight(struct udevice *dev)
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{
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struct mipi_dsi_panel_plat *plat = dev_get_plat(dev);
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struct mipi_dsi_device *dsi = plat->device;
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int ret;
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dsi_generic_write_seq(dsi, 0xf0, 0x5a, 0x5a);
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dsi_generic_write_seq(dsi, 0xf1, 0x5a, 0x5a);
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dsi_generic_write_seq(dsi, 0xd0, 0x8e);
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ret = mot_es2(dsi);
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if (ret)
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return ret;
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ret = mipi_dsi_dcs_set_display_on(dsi);
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if (ret < 0) {
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log_debug("%s: failed to set display on: %d\n", __func__, ret);
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return ret;
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}
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mdelay(20);
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return 0;
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}
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static int mot_panel_set_backlight(struct udevice *dev, int percent)
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{
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struct mot_panel_priv *priv = dev_get_priv(dev);
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int ret;
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ret = backlight_enable(priv->backlight);
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if (ret)
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return ret;
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mdelay(5);
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return backlight_set_brightness(priv->backlight, percent);
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}
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static int mot_panel_timings(struct udevice *dev, struct display_timing *timing)
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{
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memcpy(timing, &default_timing, sizeof(*timing));
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return 0;
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}
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static int mot_panel_of_to_plat(struct udevice *dev)
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{
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struct mot_panel_priv *priv = dev_get_priv(dev);
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int ret;
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ret = uclass_get_device_by_phandle(UCLASS_PANEL_BACKLIGHT, dev,
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"backlight", &priv->backlight);
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if (ret) {
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log_debug("%s: cannot get backlight: ret = %d\n", __func__, ret);
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return ret;
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}
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ret = device_get_supply_regulator(dev, "vdd-supply", &priv->vdd);
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if (ret) {
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log_debug("%s: cannot get vdd-supply: ret = %d\n", __func__, ret);
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return ret;
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}
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ret = device_get_supply_regulator(dev, "vddio-supply", &priv->vddio);
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if (ret) {
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log_debug("%s: cannot get vddio-supply: ret = %d\n", __func__, ret);
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return ret;
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}
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ret = gpio_request_by_name(dev, "reset-gpios", 0,
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&priv->reset_gpio, GPIOD_IS_OUT);
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if (ret) {
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log_debug("%s: could not decode reser-gpios (%d)\n", __func__, ret);
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return ret;
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}
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return 0;
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}
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static int mot_panel_hw_init(struct udevice *dev)
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{
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struct mot_panel_priv *priv = dev_get_priv(dev);
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int ret;
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ret = regulator_set_enable_if_allowed(priv->vddio, 1);
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if (ret) {
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log_debug("%s: enabling vddio-supply failed (%d)\n", __func__, ret);
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return ret;
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}
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ret = regulator_set_enable_if_allowed(priv->vdd, 1);
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if (ret) {
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log_debug("%s: enabling vdd-supply failed (%d)\n", __func__, ret);
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return ret;
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}
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ret = dm_gpio_set_value(&priv->reset_gpio, 1);
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if (ret) {
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log_debug("%s: error entering reset (%d)\n", __func__, ret);
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return ret;
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}
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mdelay(50);
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ret = dm_gpio_set_value(&priv->reset_gpio, 0);
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if (ret) {
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log_debug("%s: error exiting reset (%d)\n", __func__, ret);
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return ret;
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}
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mdelay(10);
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return 0;
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}
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static int mot_panel_probe(struct udevice *dev)
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{
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struct mipi_dsi_panel_plat *plat = dev_get_plat(dev);
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/* fill characteristics of DSI data link */
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plat->lanes = 2;
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plat->format = MIPI_DSI_FMT_RGB888;
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plat->mode_flags = MIPI_DSI_MODE_LPM;
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return mot_panel_hw_init(dev);
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}
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static const struct panel_ops mot_panel_ops = {
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.enable_backlight = mot_panel_enable_backlight,
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.set_backlight = mot_panel_set_backlight,
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.get_display_timing = mot_panel_timings,
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};
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static const struct udevice_id mot_panel_ids[] = {
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{ .compatible = "motorola,mot-panel" },
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{ }
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};
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U_BOOT_DRIVER(mot_panel) = {
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.name = "mot_panel",
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.id = UCLASS_PANEL,
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.of_match = mot_panel_ids,
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.ops = &mot_panel_ops,
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.of_to_plat = mot_panel_of_to_plat,
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.probe = mot_panel_probe,
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.plat_auto = sizeof(struct mipi_dsi_panel_plat),
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.priv_auto = sizeof(struct mot_panel_priv),
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};
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