mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-06-09 23:36:03 +09:00
video: lg4573: convert to DM
convert this driver to support DM. Signed-off-by: Heiko Schocher <hs@denx.de>
This commit is contained in:
Heiko Schocher
Stefano Babic
parent
a7e2dc9cf6
commit
79db1b4665
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@ -5,36 +5,40 @@
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*
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*/
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#include <common.h>
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#include <backlight.h>
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#include <display.h>
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#include <dm.h>
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#include <dm/read.h>
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#include <dm/uclass-internal.h>
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#include <errno.h>
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#include <spi.h>
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#include <asm/gpio.h>
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#define PWR_ON_DELAY_MSECS 120
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static int lb043wv_spi_write_u16(struct spi_slave *spi, u16 val)
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static int lb043wv_spi_write_u16(struct spi_slave *slave, u16 val)
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{
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unsigned long flags = SPI_XFER_BEGIN;
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unsigned short buf16 = htons(val);
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int ret = 0;
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flags |= SPI_XFER_END;
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ret = spi_xfer(spi, 16, &buf16, NULL, flags);
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ret = spi_xfer(slave, 16, &buf16, NULL,
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SPI_XFER_BEGIN | SPI_XFER_END);
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if (ret)
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debug("%s: Failed to send: %d\n", __func__, ret);
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return ret;
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}
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static void lb043wv_spi_write_u16_array(struct spi_slave *spi, u16 *buff,
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static void lb043wv_spi_write_u16_array(struct spi_slave *slave, u16 *buff,
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int size)
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{
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int i;
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for (i = 0; i < size; i++)
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lb043wv_spi_write_u16(spi, buff[i]);
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lb043wv_spi_write_u16(slave, buff[i]);
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}
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static void lb043wv_display_mode_settings(struct spi_slave *spi)
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static void lb043wv_display_mode_settings(struct spi_slave *slave)
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{
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static u16 display_mode_settings[] = {
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0x703A,
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@ -72,11 +76,11 @@ static void lb043wv_display_mode_settings(struct spi_slave *spi)
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};
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debug("transfer display mode settings\n");
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lb043wv_spi_write_u16_array(spi, display_mode_settings,
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lb043wv_spi_write_u16_array(slave, display_mode_settings,
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ARRAY_SIZE(display_mode_settings));
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}
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static void lb043wv_power_settings(struct spi_slave *spi)
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static void lb043wv_power_settings(struct spi_slave *slave)
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{
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static u16 power_settings[] = {
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0x70C0,
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@ -103,11 +107,11 @@ static void lb043wv_power_settings(struct spi_slave *spi)
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};
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debug("transfer power settings\n");
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lb043wv_spi_write_u16_array(spi, power_settings,
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lb043wv_spi_write_u16_array(slave, power_settings,
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ARRAY_SIZE(power_settings));
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}
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static void lb043wv_gamma_settings(struct spi_slave *spi)
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static void lb043wv_gamma_settings(struct spi_slave *slave)
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{
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static u16 gamma_settings[] = {
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0x70D0,
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@ -173,54 +177,57 @@ static void lb043wv_gamma_settings(struct spi_slave *spi)
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};
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debug("transfer gamma settings\n");
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lb043wv_spi_write_u16_array(spi, gamma_settings,
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lb043wv_spi_write_u16_array(slave, gamma_settings,
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ARRAY_SIZE(gamma_settings));
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}
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static void lb043wv_display_on(struct spi_slave *spi)
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static void lb043wv_display_on(struct spi_slave *slave)
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{
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static u16 sleep_out = 0x7011;
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static u16 display_on = 0x7029;
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lb043wv_spi_write_u16(spi, sleep_out);
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lb043wv_spi_write_u16(slave, sleep_out);
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mdelay(PWR_ON_DELAY_MSECS);
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lb043wv_spi_write_u16(spi, display_on);
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lb043wv_spi_write_u16(slave, display_on);
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}
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int lg4573_spi_startup(unsigned int bus, unsigned int cs,
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unsigned int max_hz, unsigned int spi_mode)
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static int lg4573_spi_startup(struct spi_slave *slave)
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{
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struct spi_slave *spi;
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int ret;
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spi = spi_setup_slave(bus, cs, max_hz, spi_mode);
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if (!spi) {
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debug("%s: Failed to set up slave\n", __func__);
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return -1;
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}
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ret = spi_claim_bus(slave);
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if (ret)
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return ret;
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ret = spi_claim_bus(spi);
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if (ret) {
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debug("%s: Failed to claim SPI bus: %d\n", __func__, ret);
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goto err_claim_bus;
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}
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lb043wv_display_mode_settings(slave);
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lb043wv_power_settings(slave);
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lb043wv_gamma_settings(slave);
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lb043wv_display_on(slave);
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lb043wv_display_mode_settings(spi);
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lb043wv_power_settings(spi);
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lb043wv_gamma_settings(spi);
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lb043wv_display_on(spi);
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spi_release_bus(slave);
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return 0;
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err_claim_bus:
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spi_free_slave(spi);
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return -1;
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}
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static int do_lgset(cmd_tbl_t *cmdtp, int flag, int argc,
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char * const argv[])
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{
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lg4573_spi_startup(CONFIG_LG4573_BUS, CONFIG_LG4573_CS, 10000000,
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SPI_MODE_0);
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struct spi_slave *slave;
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struct udevice *dev;
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int ret;
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ret = uclass_get_device_by_driver(UCLASS_DISPLAY,
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DM_GET_DRIVER(lg4573_lcd), &dev);
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if (ret) {
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printf("%s: Could not get lg4573 device\n", __func__);
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return ret;
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}
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slave = dev_get_parent_priv(dev);
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if (!slave) {
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printf("%s: No slave data\n", __func__);
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return -ENODEV;
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}
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lg4573_spi_startup(slave);
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return 0;
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}
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@ -229,3 +236,93 @@ U_BOOT_CMD(
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"set lgdisplay",
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""
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);
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static int lg4573_bind(struct udevice *dev)
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{
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return 0;
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}
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static int lg4573_probe(struct udevice *dev)
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{
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return 0;
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}
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static const struct udevice_id lg4573_ids[] = {
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{ .compatible = "lg,lg4573" },
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{ }
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};
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struct lg4573_lcd_priv {
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struct display_timing timing;
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struct udevice *backlight;
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struct gpio_desc enable;
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int panel_bpp;
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u32 power_on_delay;
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};
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static int lg4573_lcd_read_timing(struct udevice *dev,
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struct display_timing *timing)
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{
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struct lg4573_lcd_priv *priv = dev_get_priv(dev);
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memcpy(timing, &priv->timing, sizeof(struct display_timing));
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return 0;
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}
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static int lg4573_lcd_enable(struct udevice *dev, int bpp,
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const struct display_timing *edid)
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{
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struct spi_slave *slave = dev_get_parent_priv(dev);
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struct lg4573_lcd_priv *priv = dev_get_priv(dev);
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int ret = 0;
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dm_gpio_set_value(&priv->enable, 1);
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ret = backlight_enable(priv->backlight);
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mdelay(priv->power_on_delay);
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lg4573_spi_startup(slave);
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return ret;
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};
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static const struct dm_display_ops lg4573_lcd_ops = {
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.read_timing = lg4573_lcd_read_timing,
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.enable = lg4573_lcd_enable,
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};
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static int lg4573_ofdata_to_platdata(struct udevice *dev)
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{
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struct lg4573_lcd_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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debug("%s: Cannot get backlight: ret=%d\n", __func__, ret);
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return log_ret(ret);
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}
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ret = gpio_request_by_name(dev, "enable-gpios", 0, &priv->enable,
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GPIOD_IS_OUT);
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if (ret) {
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debug("%s: Warning: cannot get enable GPIO: ret=%d\n",
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__func__, ret);
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if (ret != -ENOENT)
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return log_ret(ret);
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}
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priv->power_on_delay = dev_read_u32_default(dev, "power-on-delay", 10);
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return 0;
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}
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U_BOOT_DRIVER(lg4573_lcd) = {
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.name = "lg4573",
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.id = UCLASS_DISPLAY,
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.ops = &lg4573_lcd_ops,
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.ofdata_to_platdata = lg4573_ofdata_to_platdata,
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.of_match = lg4573_ids,
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.bind = lg4573_bind,
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.probe = lg4573_probe,
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.priv_auto_alloc_size = sizeof(struct lg4573_lcd_priv),
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};
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@ -42,8 +42,6 @@
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/* Framebuffer */
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#define CONFIG_SYS_LDB_CLOCK 33246000
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#define CONFIG_LG4573
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#define CONFIG_LG4573_BUS 0
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#define CONFIG_LG4573_CS 0
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#include "aristainetos-common.h"
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@ -1017,8 +1017,6 @@ CONFIG_LD9040
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CONFIG_LEGACY
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CONFIG_LEGACY_BOOTCMD_ENV
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CONFIG_LG4573
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CONFIG_LG4573_BUS
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CONFIG_LG4573_CS
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CONFIG_LINUX
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CONFIG_LINUX_RESET_VEC
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CONFIG_LITTLETON_LCD
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