From: Michael Trimarchi michael@amarulasolutions.com
The LS068B3SX02 panel is based on the Synaptics R63353 Controller. Add a driver for it.
Signed-off-by: Michael Trimarchi michael@amarulasolutions.com Signed-off-by: Dario Binacchi dario.binacchi@amarulasolutions.com ---
drivers/video/Kconfig | 8 ++ drivers/video/Makefile | 1 + drivers/video/synaptics-r63353.c | 228 +++++++++++++++++++++++++++++++ 3 files changed, 237 insertions(+) create mode 100644 drivers/video/synaptics-r63353.c
diff --git a/drivers/video/Kconfig b/drivers/video/Kconfig index cafdc15f9fe2..520577976571 100644 --- a/drivers/video/Kconfig +++ b/drivers/video/Kconfig @@ -627,6 +627,14 @@ config VIDEO_LCD_SSD2828_RESET The reset pin of SSD2828 chip. This takes a string in the format understood by 'sunxi_name_to_gpio' function, e.g. PH1 for pin 1 of port H.
+config VIDEO_LCD_SYNAPTICS_R63353 + tristate "Synaptics R63353-based DSI LCD panels support" + select VIDEO_MIPI_DSI + default n + help + Say Y if you want to enable support for panels based on the + Synaptics R63353 controller. + config VIDEO_LCD_TDO_TL070WSH30 bool "TDO TL070WSH30 DSI LCD panel support" select VIDEO_MIPI_DSI diff --git a/drivers/video/Makefile b/drivers/video/Makefile index 9fd3645994f1..4d836efcfa41 100644 --- a/drivers/video/Makefile +++ b/drivers/video/Makefile @@ -66,6 +66,7 @@ obj-$(CONFIG_VIDEO_LCD_RENESAS_R61307) += renesas-r61307.o obj-$(CONFIG_VIDEO_LCD_RENESAS_R69328) += renesas-r69328.o obj-$(CONFIG_VIDEO_LCD_SAMSUNG_LTL106HL02) += samsung-ltl106hl02.o obj-$(CONFIG_VIDEO_LCD_SSD2828) += ssd2828.o +obj-$(CONFIG_VIDEO_LCD_SYNAPTICS_R63353) += synaptics-r63353.o obj-$(CONFIG_VIDEO_LCD_TDO_TL070WSH30) += tdo-tl070wsh30.o obj-$(CONFIG_VIDEO_MCDE_SIMPLE) += mcde_simple.o obj-${CONFIG_VIDEO_MESON} += meson/ diff --git a/drivers/video/synaptics-r63353.c b/drivers/video/synaptics-r63353.c new file mode 100644 index 000000000000..86d2aea346b2 --- /dev/null +++ b/drivers/video/synaptics-r63353.c @@ -0,0 +1,228 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Synaptics R63353 Controller driver + * + * Copyright (C) 2020 BSH Hausgerate GmbH + */ + +#include <backlight.h> +#include <dm.h> +#include <dm/device_compat.h> +#include <mipi_dsi.h> +#include <panel.h> +#include <asm/gpio.h> +#include <linux/delay.h> +#include <power/regulator.h> + +#define R63353_INSTR(...) { \ + .len = ARRAY_SIZE(((u8[]) {__VA_ARGS__})), \ + .data = (const u8 *)&(const u8 []){__VA_ARGS__} \ + } + +struct r63353_instr { + size_t len; + const u8 * const data; +}; + +static const struct r63353_instr init_sequence[] = { + R63353_INSTR(0x51, 0xff), + R63353_INSTR(0x53, 0x0c), + R63353_INSTR(0x55, 0x00), + R63353_INSTR(0x84, 0x00), + R63353_INSTR(0x29), + R63353_INSTR(0x11), +}; + +struct r63353_panel_priv { + struct udevice *dvdd; + struct udevice *avdd; + struct udevice *backlight; + struct gpio_desc reset_gpio; +}; + +static const struct display_timing default_timing = { + .pixelclock.typ = 70000000, + .hactive.typ = 640, + .hfront_porch.typ = 35, + .hsync_len.typ = 2, + .hback_porch.typ = 150, + .vactive.typ = 1280, + .vfront_porch.typ = 2, + .vsync_len.typ = 4, + .vback_porch.typ = 1, + .flags = DISPLAY_FLAGS_DE_LOW, +}; + +static int r63353_panel_enable_backlight(struct udevice *dev) +{ + struct r63353_panel_priv *priv = dev_get_priv(dev); + struct mipi_dsi_panel_plat *plat = dev_get_plat(dev); + struct mipi_dsi_device *dsi = plat->device; + int i, ret; + + ret = mipi_dsi_attach(dsi); + if (ret < 0) + return ret; + + ret = mipi_dsi_dcs_soft_reset(dsi); + if (ret < 0) { + dev_err(dev, "Failed to do Software Reset (%d)\n", ret); + goto fail; + } + + mdelay(20); + + ret = mipi_dsi_dcs_enter_sleep_mode(dsi); + if (ret < 0) { + dev_err(dev, "Failed to enter sleep mode (%d)\n", ret); + goto fail; + } + + for (i = 0; i < ARRAY_SIZE(init_sequence); i++) { + const struct r63353_instr *instr = &init_sequence[i]; + + ret = mipi_dsi_dcs_write_buffer(dsi, instr->data, instr->len); + if (ret < 0) + goto fail; + } + + mdelay(120); + + ret = mipi_dsi_dcs_exit_sleep_mode(dsi); + if (ret < 0) { + dev_err(dev, "Failed to exit sleep mode (%d)\n", ret); + goto fail; + } + + mdelay(10); + + /* This call starts sending the data on the display (LINUX LOGO) */ + ret = mipi_dsi_dcs_set_display_on(dsi); + if (ret < 0) { + dev_err(dev, "Failed to set display ON (%d)\n", ret); + goto fail; + } + + ret = backlight_enable(priv->backlight); + if (ret) + return ret; + + return 0; + +fail: + dm_gpio_set_value(&priv->reset_gpio, 0); + + return ret; +} + +static int r63353_panel_get_display_timing(struct udevice *dev, + struct display_timing *timing) +{ + struct mipi_dsi_panel_plat *plat = dev_get_plat(dev); + struct mipi_dsi_device *device = plat->device; + + memcpy(timing, &default_timing, sizeof(*timing)); + + /* fill characteristics of DSI data link */ + if (device) { + device->lanes = plat->lanes; + device->format = plat->format; + device->mode_flags = plat->mode_flags; + } + + return 0; +} + +static int r63353_panel_of_to_plat(struct udevice *dev) +{ + struct r63353_panel_priv *priv = dev_get_priv(dev); + int ret; + + ret = device_get_supply_regulator(dev, "dvdd-supply", &priv->dvdd); + if (ret) { + dev_err(dev, "failed to get power dvdd supply\n"); + return ret; + } + + ret = device_get_supply_regulator(dev, "avdd-supply", &priv->avdd); + if (ret) { + dev_err(dev, "failed to get power avdd supply\n"); + return ret; + } + + ret = gpio_request_by_name(dev, "reset-gpios", 0, &priv->reset_gpio, + GPIOD_IS_OUT); + if (ret) { + dev_err(dev, "failed to get RESET GPIO\n"); + return ret; + } + + return 0; +} + +static int r63353_panel_probe(struct udevice *dev) +{ + struct r63353_panel_priv *priv = dev_get_priv(dev); + struct mipi_dsi_panel_plat *plat = dev_get_plat(dev); + int ret; + + ret = regulator_set_enable(priv->avdd, true); + if (ret) { + dev_err(dev, "Failed to enable avdd regulator (%d)\n", ret); + return ret; + } + + mdelay(25); + + ret = regulator_set_enable(priv->dvdd, true); + if (ret) { + dev_err(dev, "Failed to enable dvdd regulator (%d)\n", ret); + regulator_set_enable(priv->avdd, false); + return ret; + } + + dm_gpio_set_value(&priv->reset_gpio, 0); + mdelay(10); + dm_gpio_set_value(&priv->reset_gpio, 1); + mdelay(120); + + /* fill characteristics of DSI data link */ + plat->lanes = 2; + plat->format = MIPI_DSI_FMT_RGB888; + plat->mode_flags = MIPI_DSI_MODE_VIDEO_HSE | MIPI_DSI_MODE_VIDEO | + MIPI_DSI_CLOCK_NON_CONTINUOUS | MIPI_DSI_MODE_LPM | + MIPI_DSI_MODE_VIDEO_SYNC_PULSE | MIPI_DSI_MODE_EOT_PACKET; + + ret = uclass_get_device_by_phandle(UCLASS_PANEL_BACKLIGHT, dev, + "backlight", &priv->backlight); + if (ret) { + dev_err(dev, "%s: Warning: cannot get backlight: ret=%d\n", + __func__, ret); + if (ret != -ENOENT) + return ret; + } + + return 0; +} + +static const struct panel_ops r63353_panel_ops = { + .enable_backlight = r63353_panel_enable_backlight, + .get_display_timing = r63353_panel_get_display_timing, +}; + +static const struct udevice_id r63353_panel_ids[] = { + { .compatible = "syna,r63353" }, + { .compatible = "sharp,ls068b3sx02" }, + { } /* sentinel */ +}; + +U_BOOT_DRIVER(r63353_panel) = { + .name = "r63353_panel", + .id = UCLASS_PANEL, + .of_match = r63353_panel_ids, + .ops = &r63353_panel_ops, + .of_to_plat = r63353_panel_of_to_plat, + .probe = r63353_panel_probe, + .plat_auto = sizeof(struct mipi_dsi_panel_plat), + .priv_auto = sizeof(struct r63353_panel_priv), +};