+++ /dev/null
-// SPDX-License-Identifier: GPL-2.0
-/*
- * LCD: LG4573, TFT 4.3", 480x800, RGB24
- * LCD initialization via SPI
- *
- */
-#include <common.h>
-#include <backlight.h>
-#include <command.h>
-#include <display.h>
-#include <dm.h>
-#include <log.h>
-#include <dm/read.h>
-#include <dm/uclass-internal.h>
-#include <errno.h>
-#include <spi.h>
-#include <asm/gpio.h>
-#include <linux/delay.h>
-
-#define PWR_ON_DELAY_MSECS 120
-
-static int lb043wv_spi_write_u16(struct spi_slave *slave, u16 val)
-{
- unsigned short buf16 = htons(val);
- int ret = 0;
-
- ret = spi_xfer(slave, 16, &buf16, NULL,
- SPI_XFER_BEGIN | SPI_XFER_END);
- if (ret)
- debug("%s: Failed to send: %d\n", __func__, ret);
-
- return ret;
-}
-
-static void lb043wv_spi_write_u16_array(struct spi_slave *slave, u16 *buff,
- int size)
-{
- int i;
-
- for (i = 0; i < size; i++)
- lb043wv_spi_write_u16(slave, buff[i]);
-}
-
-static void lb043wv_display_mode_settings(struct spi_slave *slave)
-{
- static u16 display_mode_settings[] = {
- 0x703A,
- 0x7270,
- 0x70B1,
- 0x7208,
- 0x723B,
- 0x720F,
- 0x70B2,
- 0x7200,
- 0x72C8,
- 0x70B3,
- 0x7200,
- 0x70B4,
- 0x7200,
- 0x70B5,
- 0x7242,
- 0x7210,
- 0x7210,
- 0x7200,
- 0x7220,
- 0x70B6,
- 0x720B,
- 0x720F,
- 0x723C,
- 0x7213,
- 0x7213,
- 0x72E8,
- 0x70B7,
- 0x7246,
- 0x7206,
- 0x720C,
- 0x7200,
- 0x7200,
- };
-
- debug("transfer display mode settings\n");
- lb043wv_spi_write_u16_array(slave, display_mode_settings,
- ARRAY_SIZE(display_mode_settings));
-}
-
-static void lb043wv_power_settings(struct spi_slave *slave)
-{
- static u16 power_settings[] = {
- 0x70C0,
- 0x7201,
- 0x7211,
- 0x70C3,
- 0x7207,
- 0x7203,
- 0x7204,
- 0x7204,
- 0x7204,
- 0x70C4,
- 0x7212,
- 0x7224,
- 0x7218,
- 0x7218,
- 0x7202,
- 0x7249,
- 0x70C5,
- 0x726F,
- 0x70C6,
- 0x7241,
- 0x7263,
- };
-
- debug("transfer power settings\n");
- lb043wv_spi_write_u16_array(slave, power_settings,
- ARRAY_SIZE(power_settings));
-}
-
-static void lb043wv_gamma_settings(struct spi_slave *slave)
-{
- static u16 gamma_settings[] = {
- 0x70D0,
- 0x7203,
- 0x7207,
- 0x7273,
- 0x7235,
- 0x7200,
- 0x7201,
- 0x7220,
- 0x7200,
- 0x7203,
- 0x70D1,
- 0x7203,
- 0x7207,
- 0x7273,
- 0x7235,
- 0x7200,
- 0x7201,
- 0x7220,
- 0x7200,
- 0x7203,
- 0x70D2,
- 0x7203,
- 0x7207,
- 0x7273,
- 0x7235,
- 0x7200,
- 0x7201,
- 0x7220,
- 0x7200,
- 0x7203,
- 0x70D3,
- 0x7203,
- 0x7207,
- 0x7273,
- 0x7235,
- 0x7200,
- 0x7201,
- 0x7220,
- 0x7200,
- 0x7203,
- 0x70D4,
- 0x7203,
- 0x7207,
- 0x7273,
- 0x7235,
- 0x7200,
- 0x7201,
- 0x7220,
- 0x7200,
- 0x7203,
- 0x70D5,
- 0x7203,
- 0x7207,
- 0x7273,
- 0x7235,
- 0x7200,
- 0x7201,
- 0x7220,
- 0x7200,
- 0x7203,
- };
-
- debug("transfer gamma settings\n");
- lb043wv_spi_write_u16_array(slave, gamma_settings,
- ARRAY_SIZE(gamma_settings));
-}
-
-static void lb043wv_display_on(struct spi_slave *slave)
-{
- static u16 sleep_out = 0x7011;
- static u16 display_on = 0x7029;
-
- lb043wv_spi_write_u16(slave, sleep_out);
- mdelay(PWR_ON_DELAY_MSECS);
- lb043wv_spi_write_u16(slave, display_on);
-}
-
-static int lg4573_spi_startup(struct spi_slave *slave)
-{
- int ret;
-
- ret = spi_claim_bus(slave);
- if (ret)
- return ret;
-
- lb043wv_display_mode_settings(slave);
- lb043wv_power_settings(slave);
- lb043wv_gamma_settings(slave);
- lb043wv_display_on(slave);
-
- spi_release_bus(slave);
- return 0;
-}
-
-static int do_lgset(struct cmd_tbl *cmdtp, int flag, int argc,
- char *const argv[])
-{
- struct spi_slave *slave;
- struct udevice *dev;
- int ret;
-
- ret = uclass_get_device_by_driver(UCLASS_DISPLAY,
- DM_DRIVER_GET(lg4573_lcd), &dev);
- if (ret) {
- printf("%s: Could not get lg4573 device\n", __func__);
- return ret;
- }
- slave = dev_get_parent_priv(dev);
- if (!slave) {
- printf("%s: No slave data\n", __func__);
- return -ENODEV;
- }
- lg4573_spi_startup(slave);
-
- return 0;
-}
-
-U_BOOT_CMD(
- lgset, 2, 1, do_lgset,
- "set lgdisplay",
- ""
-);
-
-static int lg4573_bind(struct udevice *dev)
-{
- return 0;
-}
-
-static int lg4573_probe(struct udevice *dev)
-{
- return 0;
-}
-
-static const struct udevice_id lg4573_ids[] = {
- { .compatible = "lg,lg4573" },
- { }
-};
-
-struct lg4573_lcd_priv {
- struct display_timing timing;
- struct udevice *backlight;
- struct gpio_desc enable;
- int panel_bpp;
- u32 power_on_delay;
-};
-
-static int lg4573_lcd_read_timing(struct udevice *dev,
- struct display_timing *timing)
-{
- struct lg4573_lcd_priv *priv = dev_get_priv(dev);
-
- memcpy(timing, &priv->timing, sizeof(struct display_timing));
-
- return 0;
-}
-
-static int lg4573_lcd_enable(struct udevice *dev, int bpp,
- const struct display_timing *edid)
-{
- struct spi_slave *slave = dev_get_parent_priv(dev);
- struct lg4573_lcd_priv *priv = dev_get_priv(dev);
- int ret = 0;
-
- dm_gpio_set_value(&priv->enable, 1);
- ret = backlight_enable(priv->backlight);
-
- mdelay(priv->power_on_delay);
- lg4573_spi_startup(slave);
-
- return ret;
-};
-
-static const struct dm_display_ops lg4573_lcd_ops = {
- .read_timing = lg4573_lcd_read_timing,
- .enable = lg4573_lcd_enable,
-};
-
-static int lg4573_of_to_plat(struct udevice *dev)
-{
- struct lg4573_lcd_priv *priv = dev_get_priv(dev);
- int ret;
-
- ret = uclass_get_device_by_phandle(UCLASS_PANEL_BACKLIGHT, dev,
- "backlight", &priv->backlight);
- if (ret) {
- debug("%s: Cannot get backlight: ret=%d\n", __func__, ret);
- return log_ret(ret);
- }
- ret = gpio_request_by_name(dev, "enable-gpios", 0, &priv->enable,
- GPIOD_IS_OUT);
- if (ret) {
- debug("%s: Warning: cannot get enable GPIO: ret=%d\n",
- __func__, ret);
- if (ret != -ENOENT)
- return log_ret(ret);
- }
-
- priv->power_on_delay = dev_read_u32_default(dev, "power-on-delay", 10);
-
- return 0;
-}
-
-U_BOOT_DRIVER(lg4573_lcd) = {
- .name = "lg4573",
- .id = UCLASS_DISPLAY,
- .ops = &lg4573_lcd_ops,
- .of_to_plat = lg4573_of_to_plat,
- .of_match = lg4573_ids,
- .bind = lg4573_bind,
- .probe = lg4573_probe,
- .priv_auto = sizeof(struct lg4573_lcd_priv),
-};
projects / u-boot.git / commitdiff