diff options
Diffstat (limited to 'drivers/video/endeavoru-panel.c')
| -rw-r--r-- | drivers/video/endeavoru-panel.c | 252 |
1 files changed, 252 insertions, 0 deletions
diff --git a/drivers/video/endeavoru-panel.c b/drivers/video/endeavoru-panel.c new file mode 100644 index 0000000..79a2721 --- /dev/null +++ b/drivers/video/endeavoru-panel.c @@ -0,0 +1,252 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Copyright (c) 2022 Svyatoslav Ryhel <clamor95@gmail.com> + */ + +#include <common.h> +#include <backlight.h> +#include <dm.h> +#include <panel.h> +#include <log.h> +#include <misc.h> +#include <mipi_display.h> +#include <mipi_dsi.h> +#include <asm/gpio.h> +#include <linux/delay.h> +#include <linux/err.h> +#include <power/regulator.h> + +struct endeavoru_panel_priv { + struct udevice *vdd; + struct udevice *vddio; + + struct udevice *backlight; + + struct gpio_desc reset_gpio; +}; + +static struct display_timing default_timing = { + .pixelclock.typ = 63200000, + .hactive.typ = 720, + .hfront_porch.typ = 55, + .hback_porch.typ = 29, + .hsync_len.typ = 16, + .vactive.typ = 1280, + .vfront_porch.typ = 2, + .vback_porch.typ = 1, + .vsync_len.typ = 1, +}; + +static void dcs_write_one(struct mipi_dsi_device *dsi, u8 cmd, u8 data) +{ + mipi_dsi_dcs_write(dsi, cmd, &data, 1); +} + +/* + * This panel is not able to auto-increment all cmd addresses so for some of + * them, we need to send them one by one... + */ +#define dcs_write_seq(dsi, cmd, seq...) \ +({ \ + static const u8 d[] = { seq }; \ + unsigned int i; \ + \ + for (i = 0; i < ARRAY_SIZE(d) ; i++) \ + dcs_write_one(dsi, cmd + i, d[i]); \ +}) + +static int endeavoru_panel_enable_backlight(struct udevice *dev) +{ + struct endeavoru_panel_priv *priv = dev_get_priv(dev); + int ret; + + ret = dm_gpio_set_value(&priv->reset_gpio, 1); + if (ret) { + log_err("error changing reset-gpios (%d)\n", ret); + return ret; + } + mdelay(5); + + ret = regulator_set_enable_if_allowed(priv->vddio, 1); + if (ret) { + log_err("error enabling iovcc-supply (%d)\n", ret); + return ret; + } + mdelay(1); + + ret = regulator_set_enable_if_allowed(priv->vdd, 1); + if (ret) { + log_err("error enabling vcc-supply (%d)\n", ret); + return ret; + } + mdelay(20); + + ret = dm_gpio_set_value(&priv->reset_gpio, 0); + if (ret) { + log_err("error changing reset-gpios (%d)\n", ret); + return ret; + } + mdelay(2); + + /* Reset panel */ + ret = dm_gpio_set_value(&priv->reset_gpio, 1); + if (ret) { + log_err("error changing reset-gpios (%d)\n", ret); + return ret; + } + mdelay(1); + + ret = dm_gpio_set_value(&priv->reset_gpio, 0); + if (ret) { + log_err("error changing reset-gpios (%d)\n", ret); + return ret; + } + mdelay(25); + + return 0; +} + +static int endeavoru_panel_set_backlight(struct udevice *dev, int percent) +{ + struct endeavoru_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 ret; + + dcs_write_one(dsi, 0xc2, 0x08); + + /* color enhancement 2.2 */ + dcs_write_one(dsi, 0xff, 0x03); + dcs_write_one(dsi, 0xfe, 0x08); + dcs_write_one(dsi, 0x18, 0x00); + dcs_write_one(dsi, 0x19, 0x00); + dcs_write_one(dsi, 0x1a, 0x00); + dcs_write_one(dsi, 0x25, 0x26); + + dcs_write_seq(dsi, 0x00, 0x00, 0x05, 0x10, 0x17, + 0x22, 0x26, 0x29, 0x29, 0x26, 0x23, + 0x17, 0x12, 0x06, 0x02, 0x01, 0x00); + + dcs_write_one(dsi, 0xfb, 0x01); + dcs_write_one(dsi, 0xff, 0x00); + dcs_write_one(dsi, 0xfe, 0x01); + + mipi_dsi_dcs_exit_sleep_mode(dsi); + + mdelay(105); + + dcs_write_one(dsi, 0x35, 0x00); + + /* PWM frequency adjust */ + dcs_write_one(dsi, 0xff, 0x04); + dcs_write_one(dsi, 0x0a, 0x07); + dcs_write_one(dsi, 0x09, 0x20); + dcs_write_one(dsi, 0xff, 0x00); + + dcs_write_one(dsi, 0xff, 0xee); + dcs_write_one(dsi, 0x12, 0x50); + dcs_write_one(dsi, 0x13, 0x02); + dcs_write_one(dsi, 0x6a, 0x60); + dcs_write_one(dsi, 0xfb, 0x01); + dcs_write_one(dsi, 0xff, 0x00); + + mipi_dsi_dcs_set_display_on(dsi); + + mdelay(42); + + dcs_write_one(dsi, 0xba, 0x01); + + dcs_write_one(dsi, 0x53, 0x24); + dcs_write_one(dsi, 0x55, 0x80); + dcs_write_one(dsi, 0x5e, 0x06); + + ret = backlight_enable(priv->backlight); + if (ret) + return ret; + + /* Set backlight */ + dcs_write_one(dsi, 0x51, 0x96); + + ret = backlight_set_brightness(priv->backlight, percent); + if (ret) + return ret; + + return 0; +} + +static int endeavoru_panel_timings(struct udevice *dev, + struct display_timing *timing) +{ + memcpy(timing, &default_timing, sizeof(*timing)); + return 0; +} + +static int endeavoru_panel_of_to_plat(struct udevice *dev) +{ + struct endeavoru_panel_priv *priv = dev_get_priv(dev); + int ret; + + ret = uclass_get_device_by_phandle(UCLASS_PANEL_BACKLIGHT, dev, + "backlight", &priv->backlight); + if (ret) { + log_err("cannot get backlight: ret = %d\n", ret); + return ret; + } + + ret = uclass_get_device_by_phandle(UCLASS_REGULATOR, dev, + "vdd-supply", &priv->vdd); + if (ret) { + log_err("cannot get vdd-supply: ret = %d\n", ret); + return ret; + } + + ret = uclass_get_device_by_phandle(UCLASS_REGULATOR, dev, + "vddio-supply", &priv->vddio); + if (ret) { + log_err("cannot get vddio-supply: ret = %d\n", ret); + return ret; + } + + ret = gpio_request_by_name(dev, "reset-gpios", 0, + &priv->reset_gpio, GPIOD_IS_OUT); + if (ret) { + log_err("could not decode reser-gpios (%d)\n", ret); + return ret; + } + + return 0; +} + +static int endeavoru_panel_probe(struct udevice *dev) +{ + struct mipi_dsi_panel_plat *plat = dev_get_plat(dev); + + /* fill characteristics of DSI data link */ + plat->lanes = 2; + plat->format = MIPI_DSI_FMT_RGB888; + plat->mode_flags = MIPI_DSI_MODE_VIDEO; + + return 0; +} + +static const struct panel_ops endeavoru_panel_ops = { + .enable_backlight = endeavoru_panel_enable_backlight, + .set_backlight = endeavoru_panel_set_backlight, + .get_display_timing = endeavoru_panel_timings, +}; + +static const struct udevice_id endeavoru_panel_ids[] = { + { .compatible = "htc,edge-panel" }, + { } +}; + +U_BOOT_DRIVER(endeavoru_panel) = { + .name = "endeavoru_panel", + .id = UCLASS_PANEL, + .of_match = endeavoru_panel_ids, + .ops = &endeavoru_panel_ops, + .of_to_plat = endeavoru_panel_of_to_plat, + .probe = endeavoru_panel_probe, + .plat_auto = sizeof(struct mipi_dsi_panel_plat), + .priv_auto = sizeof(struct endeavoru_panel_priv), +}; |