From: Ondrej Jirman megi@xff.cz

The driver is for panels based on the Himax HX8394 controller, such as the HannStar HSD060BHW4 720x1440 TFT LCD panel that uses a MIPI-DSI interface. This panel is used in Pinephone Pro.

Signed-off-by: Ondrej Jirman megi@xff.cz Cc: Anatolij Gustschin agust@denx.de --- drivers/video/Kconfig | 8 ++ drivers/video/Makefile | 1 + drivers/video/himax-hx8394.c | 237 +++++++++++++++++++++++++++++++++++ 3 files changed, 246 insertions(+) create mode 100644 drivers/video/himax-hx8394.c

diff --git a/drivers/video/Kconfig b/drivers/video/Kconfig index 1e2f4e6de4a5..9efe69361ca6 100644 --- a/drivers/video/Kconfig +++ b/drivers/video/Kconfig @@ -477,6 +477,14 @@ config VIDEO_LCD_ENDEAVORU using the same DSI command sequence. The panel has a 720x1280 resolution and uses 24 bit RGB per pixel.

+config VIDEO_LCD_HIMAX_HX8394 + bool "Himax HX8394 DSI LCD panel support" + depends on PANEL && BACKLIGHT + select VIDEO_MIPI_DSI + help + Say Y here if you want to enable support for Himax HX8394 + dsi 4dl panel. + config VIDEO_LCD_ORISETECH_OTM8009A bool "OTM8009A DSI LCD panel support" select VIDEO_MIPI_DSI diff --git a/drivers/video/Makefile b/drivers/video/Makefile index 9a53cd141875..5dcc3fea08cb 100644 --- a/drivers/video/Makefile +++ b/drivers/video/Makefile @@ -54,6 +54,7 @@ obj-$(CONFIG_VIDEO_IPUV3) += imx/ obj-$(CONFIG_VIDEO_IVYBRIDGE_IGD) += ivybridge_igd.o obj-$(CONFIG_VIDEO_LCD_ANX9804) += anx9804.o obj-$(CONFIG_VIDEO_LCD_ENDEAVORU) += endeavoru-panel.o +obj-$(CONFIG_VIDEO_LCD_HIMAX_HX8394) += himax-hx8394.o obj-$(CONFIG_VIDEO_LCD_HITACHI_TX18D42VM) += hitachi_tx18d42vm_lcd.o obj-$(CONFIG_VIDEO_LCD_ORISETECH_OTM8009A) += orisetech_otm8009a.o obj-$(CONFIG_VIDEO_LCD_RAYDIUM_RM68200) += raydium-rm68200.o diff --git a/drivers/video/himax-hx8394.c b/drivers/video/himax-hx8394.c new file mode 100644 index 000000000000..63637b4db022 --- /dev/null +++ b/drivers/video/himax-hx8394.c @@ -0,0 +1,237 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Copyright (C) 2022 Ondrej Jirman megi@xff.cz + */ +#include <common.h> +#include <backlight.h> +#include <dm.h> +#include <mipi_dsi.h> +#include <panel.h> +#include <asm/gpio.h> +#include <dm/device_compat.h> +#include <linux/delay.h> +#include <power/regulator.h> + +struct hx8394_panel_priv { + struct udevice *reg_vcc; + struct udevice *reg_iovcc; + struct gpio_desc reset; + struct udevice *backlight; +}; + +static const struct display_timing default_timing = { + .pixelclock.typ = 74250000, + .hactive.typ = 720, + .hfront_porch.typ = 40, + .hback_porch.typ = 40, + .hsync_len.typ = 46, + .vactive.typ = 1440, + .vfront_porch.typ = 7, + .vback_porch.typ = 9, + .vsync_len.typ = 7, + .flags = DISPLAY_FLAGS_VSYNC_LOW | DISPLAY_FLAGS_HSYNC_LOW, +}; + +#define dsi_dcs_write_seq(device, seq...) do { \ + static const u8 d[] = { seq }; \ + int ret; \ + ret = mipi_dsi_dcs_write_buffer(device, d, ARRAY_SIZE(d)); \ + if (ret < 0) \ + return ret; \ + } while (0) + +static int hx8394_init_sequence(struct udevice *dev) +{ + struct mipi_dsi_panel_plat *plat = dev_get_plat(dev); + struct mipi_dsi_device *device = plat->device; + int ret; + + dsi_dcs_write_seq(device, 0xb9, 0xff, 0x83, 0x94); + dsi_dcs_write_seq(device, 0xb1, 0x48, 0x11, 0x71, 0x09, 0x32, 0x24, + 0x71, 0x31, 0x55, 0x30); + dsi_dcs_write_seq(device, 0xba, 0x63, 0x03, 0x68, 0x6b, 0xb2, 0xc0); + dsi_dcs_write_seq(device, 0xb2, 0x00, 0x80, 0x78, 0x0c, 0x07); + dsi_dcs_write_seq(device, 0xb4, 0x12, 0x63, 0x12, 0x63, 0x12, 0x63, + 0x01, 0x0c, 0x7c, 0x55, 0x00, 0x3f, 0x12, 0x6b, 0x12, + 0x6b, 0x12, 0x6b, 0x01, 0x0c, 0x7c); + dsi_dcs_write_seq(device, 0xd3, 0x00, 0x00, 0x00, 0x00, 0x3c, 0x1c, + 0x00, 0x00, 0x32, 0x10, 0x09, 0x00, 0x09, 0x32, 0x15, + 0xad, 0x05, 0xad, 0x32, 0x00, 0x00, 0x00, 0x00, 0x37, + 0x03, 0x0b, 0x0b, 0x37, 0x00, 0x00, 0x00, 0x0c, 0x40); + dsi_dcs_write_seq(device, 0xd5, 0x19, 0x19, 0x18, 0x18, 0x1b, 0x1b, + 0x1a, 0x1a, 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, + 0x07, 0x20, 0x21, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, + 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x24, 0x25, 0x18, + 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, + 0x18, 0x18); + dsi_dcs_write_seq(device, 0xd6, 0x18, 0x18, 0x19, 0x19, 0x1b, 0x1b, + 0x1a, 0x1a, 0x07, 0x06, 0x05, 0x04, 0x03, 0x02, 0x01, + 0x00, 0x25, 0x24, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, + 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x21, 0x20, 0x18, + 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, + 0x18, 0x18); + dsi_dcs_write_seq(device, 0xe0, 0x00, 0x04, 0x0c, 0x12, 0x14, 0x18, + 0x1a, 0x18, 0x31, 0x3f, 0x4d, 0x4c, 0x54, 0x65, 0x6b, + 0x70, 0x7f, 0x82, 0x7e, 0x8a, 0x99, 0x4a, 0x48, 0x49, + 0x4b, 0x4a, 0x4c, 0x4b, 0x7f, 0x00, 0x04, 0x0c, 0x11, + 0x13, 0x17, 0x1a, 0x18, 0x31, 0x3f, 0x4d, 0x4c, 0x54, + 0x65, 0x6b, 0x70, 0x7f, 0x82, 0x7e, 0x8a, 0x99, 0x4a, + 0x48, 0x49, 0x4b, 0x4a, 0x4c, 0x4b, 0x7f); + dsi_dcs_write_seq(device, 0xcc, 0x0b); + dsi_dcs_write_seq(device, 0xc0, 0x1f, 0x31); + dsi_dcs_write_seq(device, 0xb6, 0x7d, 0x7d); + dsi_dcs_write_seq(device, 0xd4, 0x02); + dsi_dcs_write_seq(device, 0xbd, 0x01); + dsi_dcs_write_seq(device, 0xb1, 0x00); + dsi_dcs_write_seq(device, 0xbd, 0x00); + dsi_dcs_write_seq(device, 0xc6, 0xed); + + ret = mipi_dsi_dcs_exit_sleep_mode(device); + if (ret) + return ret; + + /* Panel is operational 120 msec after reset */ + mdelay(120); + + ret = mipi_dsi_dcs_set_display_on(device); + if (ret) + return ret; + + return 0; +} + +static int hx8394_panel_enable_backlight(struct udevice *dev) +{ + struct mipi_dsi_panel_plat *plat = dev_get_plat(dev); + struct mipi_dsi_device *device = plat->device; + struct hx8394_panel_priv *priv = dev_get_priv(dev); + int ret; + + ret = mipi_dsi_attach(device); + if (ret < 0) { + printf("mipi_dsi_attach failed %d\n", ret); + return ret; + } + + ret = hx8394_init_sequence(dev); + if (ret) { + printf("hx8394_init_sequence failed %d\n", ret); + return ret; + } + + if (priv->backlight) { + ret = backlight_enable(priv->backlight); + if (ret) { + printf("backlight enabled failed %d\n", ret); + return ret; + } + + backlight_set_brightness(priv->backlight, 60); + } + + mdelay(10); + + return 0; +} + +static int hx8394_panel_get_display_timing(struct udevice *dev, + struct display_timing *timings) +{ + memcpy(timings, &default_timing, sizeof(*timings)); + + return 0; +} + +static int hx8394_panel_of_to_plat(struct udevice *dev) +{ + struct hx8394_panel_priv *priv = dev_get_priv(dev); + int ret; + + if (CONFIG_IS_ENABLED(DM_REGULATOR)) { + ret = device_get_supply_regulator(dev, "vcc-supply", + &priv->reg_vcc); + if (ret && ret != -ENOENT) { + dev_err(dev, "Warning: cannot get vcc supply\n"); + return ret; + } + + ret = device_get_supply_regulator(dev, "iovcc-supply", + &priv->reg_iovcc); + if (ret && ret != -ENOENT) { + dev_err(dev, "Warning: cannot get iovcc supply\n"); + return ret; + } + } + + ret = uclass_get_device_by_phandle(UCLASS_PANEL_BACKLIGHT, dev, + "backlight", &priv->backlight); + if (ret) + dev_warn(dev, "failed to get backlight\n"); + + ret = gpio_request_by_name(dev, "reset-gpios", 0, &priv->reset, + GPIOD_IS_OUT); + if (ret) { + dev_err(dev, "warning: cannot get reset GPIO (%d)\n", ret); + if (ret != -ENOENT) + return ret; + } + + return 0; +} + +static int hx8394_panel_probe(struct udevice *dev) +{ + struct hx8394_panel_priv *priv = dev_get_priv(dev); + struct mipi_dsi_panel_plat *plat = dev_get_plat(dev); + int ret; + + dm_gpio_set_value(&priv->reset, true); + + if (CONFIG_IS_ENABLED(DM_REGULATOR)) { + dev_dbg(dev, "enable vcc '%s'\n", priv->reg_vcc->name); + ret = regulator_set_enable(priv->reg_vcc, true); + if (ret) + return ret; + + dev_dbg(dev, "enable iovcc '%s'\n", priv->reg_iovcc->name); + ret = regulator_set_enable(priv->reg_iovcc, true); + if (ret) { + regulator_set_enable(priv->reg_vcc, false); + return ret; + } + } + + mdelay(5); + dm_gpio_set_value(&priv->reset, false); + + mdelay(180); + + /* fill characteristics of DSI data link */ + plat->lanes = 4; + plat->format = MIPI_DSI_FMT_RGB888; + plat->mode_flags = MIPI_DSI_MODE_VIDEO | + MIPI_DSI_MODE_VIDEO_BURST; + + return 0; +} + +static const struct panel_ops hx8394_panel_ops = { + .enable_backlight = hx8394_panel_enable_backlight, + .get_display_timing = hx8394_panel_get_display_timing, +}; + +static const struct udevice_id hx8394_panel_ids[] = { + { .compatible = "hannstar,hsd060bhw4" }, + { } +}; + +U_BOOT_DRIVER(hx8394_panel) = { + .name = "hx8394_panel", + .id = UCLASS_PANEL, + .of_match = hx8394_panel_ids, + .ops = &hx8394_panel_ops, + .of_to_plat = hx8394_panel_of_to_plat, + .probe = hx8394_panel_probe, + .plat_auto = sizeof(struct mipi_dsi_panel_plat), + .priv_auto = sizeof(struct hx8394_panel_priv), +};