diff options
Diffstat (limited to 'board/samsung')
| -rw-r--r-- | board/samsung/common/exynos5-dt.c | 153 |
1 files changed, 0 insertions, 153 deletions
diff --git a/board/samsung/common/exynos5-dt.c b/board/samsung/common/exynos5-dt.c index 0dcea71561..2e3b16df45 100644 --- a/board/samsung/common/exynos5-dt.c +++ b/board/samsung/common/exynos5-dt.c @@ -147,159 +147,6 @@ int board_get_revision(void) return 0; } -#ifdef CONFIG_LCD - -static int board_dp_bridge_init(struct udevice *dev) -{ - const int max_tries = 10; - int num_tries; - int ret; - - debug("%s\n", __func__); - ret = video_bridge_attach(dev); - if (ret) { - debug("video bridge init failed: %d\n", ret); - return ret; - } - - /* - * We need to wait for 90ms after bringing up the bridge since there - * is a phantom "high" on the HPD chip during its bootup. The phantom - * high comes within 7ms of de-asserting PD and persists for at least - * 15ms. The real high comes roughly 50ms after PD is de-asserted. The - * phantom high makes it hard for us to know when the NXP chip is up. - */ - mdelay(90); - - for (num_tries = 0; num_tries < max_tries; num_tries++) { - /* Check HPD. If it's high, or we don't have it, all is well */ - ret = video_bridge_check_attached(dev); - if (!ret || ret == -ENOENT) - return 0; - - debug("%s: eDP bridge failed to come up; try %d of %d\n", - __func__, num_tries, max_tries); - } - - /* Immediately go into bridge reset if the hp line is not high */ - return -EIO; -} - -static int board_dp_bridge_setup(const void *blob) -{ - const int max_tries = 2; - int num_tries; - struct udevice *dev; - int ret; - - /* Configure I2C registers for Parade bridge */ - ret = uclass_get_device(UCLASS_VIDEO_BRIDGE, 0, &dev); - if (ret) { - debug("video bridge init failed: %d\n", ret); - return ret; - } - - if (strncmp(dev->driver->name, "parade", 6)) { - /* Mux HPHPD to the special hotplug detect mode */ - exynos_pinmux_config(PERIPH_ID_DPHPD, 0); - } - - for (num_tries = 0; num_tries < max_tries; num_tries++) { - ret = board_dp_bridge_init(dev); - if (!ret) - return 0; - if (num_tries == max_tries - 1) - break; - - /* - * If we're here, the bridge chip failed to initialise. - * Power down the bridge in an attempt to reset. - */ - video_bridge_set_active(dev, false); - - /* - * Arbitrarily wait 300ms here with DP_N low. Don't know for - * sure how long we should wait, but we're being paranoid. - */ - mdelay(300); - } - - return ret; -} - -void exynos_cfg_lcd_gpio(void) -{ - /* For Backlight */ - gpio_request(EXYNOS5_GPIO_B20, "lcd_backlight"); - gpio_cfg_pin(EXYNOS5_GPIO_B20, S5P_GPIO_OUTPUT); - gpio_set_value(EXYNOS5_GPIO_B20, 1); -} - -static int board_dp_set_backlight(int percent) -{ - struct udevice *dev; - int ret; - - ret = uclass_get_device(UCLASS_VIDEO_BRIDGE, 0, &dev); - if (!ret) - ret = video_bridge_set_backlight(dev, percent); - - return ret; -} - -void exynos_backlight_on(unsigned int on) -{ - struct udevice *dev; - int ret; - - debug("%s(%u)\n", __func__, on); - if (!on) - return; - - ret = regulator_get_by_platname("vcd_led", &dev); - if (!ret) - ret = regulator_set_enable(dev, true); - if (ret) - debug("Failed to enable backlight: ret=%d\n", ret); - - /* T5 in the LCD timing spec (defined as > 10ms) */ - mdelay(10); - - /* board_dp_backlight_pwm */ - gpio_direction_output(EXYNOS5_GPIO_B20, 1); - - /* T6 in the LCD timing spec (defined as > 10ms) */ - mdelay(10); - - /* try to set the backlight in the bridge registers */ - ret = board_dp_set_backlight(80); - - /* if we have no bridge or it does not support backlight, use a GPIO */ - if (ret == -ENODEV || ret == -ENOSYS) { - gpio_request(EXYNOS5_GPIO_X30, "board_dp_backlight_en"); - gpio_direction_output(EXYNOS5_GPIO_X30, 1); - } -} - -void exynos_lcd_power_on(void) -{ - struct udevice *dev; - int ret; - - debug("%s\n", __func__); - ret = regulator_get_by_platname("lcd_vdd", &dev); - if (!ret) - ret = regulator_set_enable(dev, true); - if (ret) - debug("Failed to enable LCD panel: ret=%d\n", ret); - - ret = board_dp_bridge_setup(gd->fdt_blob); - if (ret && ret != -ENODEV) - printf("LCD bridge failed to enable: %d\n", ret); -} - -#endif - #ifdef CONFIG_USB_DWC3 static struct dwc3_device dwc3_device_data = { .maximum_speed = USB_SPEED_SUPER, |