--- /dev/null
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Renesas R61307 panel driver
+ *
+ * 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>
+
+/*
+ * The datasheet is not publicly available, all values are
+ * taken from the downstream. If you have access to datasheets,
+ * corrections are welcome.
+ */
+
+#define R61307_MACP 0xB0 /* Manufacturer CMD Protect */
+
+#define R61307_INVERSION 0xC1
+#define R61307_GAMMA_SET_A 0xC8 /* Gamma Setting A */
+#define R61307_GAMMA_SET_B 0xC9 /* Gamma Setting B */
+#define R61307_GAMMA_SET_C 0xCA /* Gamma Setting C */
+#define R61307_CONTRAST_SET 0xCC
+
+struct renesas_r61307_priv {
+ struct udevice *vcc;
+ struct udevice *iovcc;
+
+ struct udevice *backlight;
+
+ struct gpio_desc reset_gpio;
+
+ bool dig_cont_adj;
+ bool inversion;
+ u32 gamma;
+};
+
+static const u8 macp_on[] = {
+ R61307_MACP, 0x03
+};
+
+static const u8 macp_off[] = {
+ R61307_MACP, 0x04
+};
+
+static const u8 address_mode[] = {
+ MIPI_DCS_SET_ADDRESS_MODE
+};
+
+static const u8 contrast_setting[] = {
+ R61307_CONTRAST_SET,
+ 0xdc, 0xb4, 0xff
+};
+
+static const u8 column_inversion[] = {
+ R61307_INVERSION,
+ 0x00, 0x50, 0x03, 0x22,
+ 0x16, 0x06, 0x60, 0x11
+};
+
+static const u8 line_inversion[] = {
+ R61307_INVERSION,
+ 0x00, 0x10, 0x03, 0x22,
+ 0x16, 0x06, 0x60, 0x01
+};
+
+static const u8 gamma_setting[][25] = {
+ {},
+ {
+ R61307_GAMMA_SET_A,
+ 0x00, 0x06, 0x0a, 0x0f,
+ 0x14, 0x1f, 0x1f, 0x17,
+ 0x12, 0x0c, 0x09, 0x06,
+ 0x00, 0x06, 0x0a, 0x0f,
+ 0x14, 0x1f, 0x1f, 0x17,
+ 0x12, 0x0c, 0x09, 0x06
+ },
+ {
+ R61307_GAMMA_SET_A,
+ 0x00, 0x05, 0x0b, 0x0f,
+ 0x11, 0x1d, 0x20, 0x18,
+ 0x18, 0x09, 0x07, 0x06,
+ 0x00, 0x05, 0x0b, 0x0f,
+ 0x11, 0x1d, 0x20, 0x18,
+ 0x18, 0x09, 0x07, 0x06
+ },
+ {
+ R61307_GAMMA_SET_A,
+ 0x0b, 0x0d, 0x10, 0x14,
+ 0x13, 0x1d, 0x20, 0x18,
+ 0x12, 0x09, 0x07, 0x06,
+ 0x0a, 0x0c, 0x10, 0x14,
+ 0x13, 0x1d, 0x20, 0x18,
+ 0x12, 0x09, 0x07, 0x06
+ },
+};
+
+static struct display_timing default_timing = {
+ .pixelclock.typ = 62000000,
+ .hactive.typ = 768,
+ .hfront_porch.typ = 116,
+ .hback_porch.typ = 81,
+ .hsync_len.typ = 5,
+ .vactive.typ = 1024,
+ .vfront_porch.typ = 24,
+ .vback_porch.typ = 8,
+ .vsync_len.typ = 2,
+};
+
+static int renesas_r61307_enable_backlight(struct udevice *dev)
+{
+ struct renesas_r61307_priv *priv = dev_get_priv(dev);
+ int ret;
+
+ ret = regulator_set_enable_if_allowed(priv->vcc, 1);
+ if (ret) {
+ log_err("enabling vcc-supply failed (%d)\n", ret);
+ return ret;
+ }
+ mdelay(5);
+
+ ret = regulator_set_enable_if_allowed(priv->iovcc, 1);
+ if (ret) {
+ log_err("enabling iovcc-supply failed (%d)\n", ret);
+ return ret;
+ }
+
+ ret = dm_gpio_set_value(&priv->reset_gpio, 0);
+ if (ret) {
+ log_err("changing reset-gpio failed (%d)\n", ret);
+ return ret;
+ }
+ mdelay(5);
+
+ ret = dm_gpio_set_value(&priv->reset_gpio, 1);
+ if (ret) {
+ log_err("changing reset-gpio failed (%d)\n", ret);
+ return ret;
+ }
+
+ mdelay(5);
+
+ return 0;
+}
+
+static int renesas_r61307_set_backlight(struct udevice *dev, int percent)
+{
+ struct renesas_r61307_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;
+
+ ret = mipi_dsi_dcs_exit_sleep_mode(dsi);
+ if (ret < 0) {
+ log_err("failed to exit sleep mode: %d\n", ret);
+ return ret;
+ }
+
+ mdelay(80);
+
+ mipi_dsi_dcs_write_buffer(dsi, address_mode,
+ sizeof(address_mode));
+
+ mdelay(20);
+
+ ret = mipi_dsi_dcs_set_pixel_format(dsi, MIPI_DCS_PIXEL_FMT_24BIT << 4);
+ if (ret < 0) {
+ log_err("failed to set pixel format: %d\n", ret);
+ return ret;
+ }
+
+ /* MACP Off */
+ mipi_dsi_generic_write(dsi, macp_off, sizeof(macp_off));
+
+ if (priv->dig_cont_adj)
+ mipi_dsi_generic_write(dsi, contrast_setting,
+ sizeof(contrast_setting));
+
+ if (priv->gamma)
+ mipi_dsi_generic_write(dsi, gamma_setting[priv->gamma],
+ sizeof(gamma_setting[priv->gamma]));
+
+ if (priv->inversion)
+ mipi_dsi_generic_write(dsi, column_inversion,
+ sizeof(column_inversion));
+ else
+ mipi_dsi_generic_write(dsi, line_inversion,
+ sizeof(line_inversion));
+
+ /* MACP On */
+ mipi_dsi_generic_write(dsi, macp_on, sizeof(macp_on));
+
+ ret = mipi_dsi_dcs_set_display_on(dsi);
+ if (ret < 0) {
+ log_err("failed to set display on: %d\n", ret);
+ return ret;
+ }
+
+ mdelay(50);
+
+ ret = backlight_enable(priv->backlight);
+ if (ret)
+ return ret;
+
+ ret = backlight_set_brightness(priv->backlight, percent);
+ if (ret)
+ return ret;
+
+ return 0;
+}
+
+static int renesas_r61307_timings(struct udevice *dev,
+ struct display_timing *timing)
+{
+ memcpy(timing, &default_timing, sizeof(*timing));
+ return 0;
+}
+
+static int renesas_r61307_of_to_plat(struct udevice *dev)
+{
+ struct renesas_r61307_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,
+ "vcc-supply", &priv->vcc);
+ if (ret) {
+ log_err("Cannot get vcc-supply: ret = %d\n", ret);
+ return ret;
+ }
+
+ ret = uclass_get_device_by_phandle(UCLASS_REGULATOR, dev,
+ "iovcc-supply", &priv->iovcc);
+ if (ret) {
+ log_err("Cannot get iovcc-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;
+ }
+
+ priv->dig_cont_adj = dev_read_bool(dev, "renesas,contrast");
+ priv->inversion = dev_read_bool(dev, "renesas,inversion");
+ priv->gamma = dev_read_u32_default(dev, "renesas,gamma", 0);
+
+ return 0;
+}
+
+static int renesas_r61307_probe(struct udevice *dev)
+{
+ struct mipi_dsi_panel_plat *plat = dev_get_plat(dev);
+
+ /* fill characteristics of DSI data link */
+ plat->lanes = 4;
+ plat->format = MIPI_DSI_FMT_RGB888;
+ plat->mode_flags = MIPI_DSI_MODE_VIDEO;
+
+ return 0;
+}
+
+static const struct panel_ops renesas_r61307_ops = {
+ .enable_backlight = renesas_r61307_enable_backlight,
+ .set_backlight = renesas_r61307_set_backlight,
+ .get_display_timing = renesas_r61307_timings,
+};
+
+static const struct udevice_id renesas_r61307_ids[] = {
+ { .compatible = "koe,tx13d100vm0eaa" },
+ { .compatible = "hitachi,tx13d100vm0eaa" },
+ { }
+};
+
+U_BOOT_DRIVER(renesas_r61307) = {
+ .name = "renesas_r61307",
+ .id = UCLASS_PANEL,
+ .of_match = renesas_r61307_ids,
+ .ops = &renesas_r61307_ops,
+ .of_to_plat = renesas_r61307_of_to_plat,
+ .probe = renesas_r61307_probe,
+ .plat_auto = sizeof(struct mipi_dsi_panel_plat),
+ .priv_auto = sizeof(struct renesas_r61307_priv),
+};
projects / u-boot.git / commitdiff
