+// SPDX-License-Identifier: GPL-2.0
/*
* LCD: LG4573, TFT 4.3", 480x800, RGB24
* LCD initialization via SPI
*
- * SPDX-License-Identifier: GPL-2.0
- *
*/
#include <common.h>
+#include <backlight.h>
+#include <display.h>
+#include <dm.h>
+#include <dm/read.h>
+#include <dm/uclass-internal.h>
#include <errno.h>
#include <spi.h>
+#include <asm/gpio.h>
#define PWR_ON_DELAY_MSECS 120
-static int lb043wv_spi_write_u16(struct spi_slave *spi, u16 val)
+static int lb043wv_spi_write_u16(struct spi_slave *slave, u16 val)
{
- unsigned long flags = SPI_XFER_BEGIN;
unsigned short buf16 = htons(val);
int ret = 0;
- flags |= SPI_XFER_END;
-
- ret = spi_xfer(spi, 16, &buf16, NULL, flags);
+ 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 *spi, u16 *buff,
+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(spi, buff[i]);
+ lb043wv_spi_write_u16(slave, buff[i]);
}
-static void lb043wv_display_mode_settings(struct spi_slave *spi)
+static void lb043wv_display_mode_settings(struct spi_slave *slave)
{
static u16 display_mode_settings[] = {
0x703A,
};
debug("transfer display mode settings\n");
- lb043wv_spi_write_u16_array(spi, display_mode_settings,
+ lb043wv_spi_write_u16_array(slave, display_mode_settings,
ARRAY_SIZE(display_mode_settings));
}
-static void lb043wv_power_settings(struct spi_slave *spi)
+static void lb043wv_power_settings(struct spi_slave *slave)
{
static u16 power_settings[] = {
0x70C0,
};
debug("transfer power settings\n");
- lb043wv_spi_write_u16_array(spi, power_settings,
+ lb043wv_spi_write_u16_array(slave, power_settings,
ARRAY_SIZE(power_settings));
}
-static void lb043wv_gamma_settings(struct spi_slave *spi)
+static void lb043wv_gamma_settings(struct spi_slave *slave)
{
static u16 gamma_settings[] = {
0x70D0,
};
debug("transfer gamma settings\n");
- lb043wv_spi_write_u16_array(spi, gamma_settings,
+ lb043wv_spi_write_u16_array(slave, gamma_settings,
ARRAY_SIZE(gamma_settings));
}
-static void lb043wv_display_on(struct spi_slave *spi)
+static void lb043wv_display_on(struct spi_slave *slave)
{
static u16 sleep_out = 0x7011;
static u16 display_on = 0x7029;
- lb043wv_spi_write_u16(spi, sleep_out);
+ lb043wv_spi_write_u16(slave, sleep_out);
mdelay(PWR_ON_DELAY_MSECS);
- lb043wv_spi_write_u16(spi, display_on);
+ lb043wv_spi_write_u16(slave, display_on);
}
-int lg4573_spi_startup(unsigned int bus, unsigned int cs,
- unsigned int max_hz, unsigned int spi_mode)
+static int lg4573_spi_startup(struct spi_slave *slave)
{
- struct spi_slave *spi;
int ret;
- spi = spi_setup_slave(bus, cs, max_hz, spi_mode);
- if (!spi) {
- debug("%s: Failed to set up slave\n", __func__);
- return -1;
- }
-
- ret = spi_claim_bus(spi);
- if (ret) {
- debug("%s: Failed to claim SPI bus: %d\n", __func__, ret);
- goto err_claim_bus;
- }
+ ret = spi_claim_bus(slave);
+ if (ret)
+ return ret;
- lb043wv_display_mode_settings(spi);
- lb043wv_power_settings(spi);
- lb043wv_gamma_settings(spi);
+ lb043wv_display_mode_settings(slave);
+ lb043wv_power_settings(slave);
+ lb043wv_gamma_settings(slave);
+ lb043wv_display_on(slave);
- lb043wv_display_on(spi);
+ spi_release_bus(slave);
return 0;
-err_claim_bus:
- spi_free_slave(spi);
- return -1;
}
static int do_lgset(cmd_tbl_t *cmdtp, int flag, int argc,
char * const argv[])
{
- lg4573_spi_startup(CONFIG_LG4573_BUS, CONFIG_LG4573_CS, 10000000,
- SPI_MODE_0);
+ struct spi_slave *slave;
+ struct udevice *dev;
+ int ret;
+
+ ret = uclass_get_device_by_driver(UCLASS_DISPLAY,
+ DM_GET_DRIVER(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;
}
"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_ofdata_to_platdata(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,
+ .ofdata_to_platdata = lg4573_ofdata_to_platdata,
+ .of_match = lg4573_ids,
+ .bind = lg4573_bind,
+ .probe = lg4573_probe,
+ .priv_auto_alloc_size = sizeof(struct lg4573_lcd_priv),
+};
projects / oweals / u-boot.git / blobdiff