@@ -395,6 +395,16 @@ config DRM_PANEL_SITRONIX_ST7701
ST7701 controller for 480X864 LCD panels with MIPI/RGB/SPI
system interfaces.
+config DRM_PANEL_SITRONIX_ST7703
+ tristate "Sitronix ST7703 panel driver"
+ depends on OF
+ depends on DRM_MIPI_DSI
+ depends on BACKLIGHT_CLASS_DEVICE
+ help
+ Say Y here if you want to enable support for the Sitronix
+ ST7703 controller for 720X1440 LCD panels with MIPI/RGB/SPI
+ system interfaces.
+
config DRM_PANEL_SITRONIX_ST7789V
tristate "Sitronix ST7789V panel"
depends on OF && SPI
@@ -41,6 +41,7 @@ obj-$(CONFIG_DRM_PANEL_SHARP_LQ101R1SX01) += panel-sharp-lq101r1sx01.o
obj-$(CONFIG_DRM_PANEL_SHARP_LS037V7DW01) += panel-sharp-ls037v7dw01.o
obj-$(CONFIG_DRM_PANEL_SHARP_LS043T1LE01) += panel-sharp-ls043t1le01.o
obj-$(CONFIG_DRM_PANEL_SITRONIX_ST7701) += panel-sitronix-st7701.o
+obj-$(CONFIG_DRM_PANEL_SITRONIX_ST7703) += panel-sitronix-st7703.o
obj-$(CONFIG_DRM_PANEL_SITRONIX_ST7789V) += panel-sitronix-st7789v.o
obj-$(CONFIG_DRM_PANEL_SONY_ACX424AKP) += panel-sony-acx424akp.o
obj-$(CONFIG_DRM_PANEL_SONY_ACX565AKM) += panel-sony-acx565akm.o
new file mode 100644
@@ -0,0 +1,386 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * DRM driver for Sitronix ST7703 MIPI DSI panel
+ *
+ * Copyright (C) 2020 Ondrej Jirman <megous@megous.com>
+ * Copyright (C) 2019-2020 Icenowy Zheng <icenowy@aosc.io>
+ *
+ * Based on panel-rocktech-jh057n00900.c, which is:
+ * Copyright (C) Purism SPC 2019
+ */
+
+#include <linux/delay.h>
+#include <linux/gpio/consumer.h>
+#include <linux/mod_devicetable.h>
+#include <linux/module.h>
+#include <linux/of_device.h>
+#include <linux/regulator/consumer.h>
+
+#include <drm/drm_mipi_dsi.h>
+#include <drm/drm_modes.h>
+#include <drm/drm_panel.h>
+#include <drm/drm_print.h>
+
+/* Manufacturer specific Commands send via DSI */
+#define ST7703_CMD_ALL_PIXEL_OFF 0x22
+#define ST7703_CMD_ALL_PIXEL_ON 0x23
+#define ST7703_CMD_SETDISP 0xB2
+#define ST7703_CMD_SETRGBIF 0xB3
+#define ST7703_CMD_SETCYC 0xB4
+#define ST7703_CMD_SETBGP 0xB5
+#define ST7703_CMD_SETVCOM 0xB6
+#define ST7703_CMD_SETOTP 0xB7
+#define ST7703_CMD_SETPOWER_EXT 0xB8
+#define ST7703_CMD_SETEXTC 0xB9
+#define ST7703_CMD_SETMIPI 0xBA
+#define ST7703_CMD_SETVDC 0xBC
+#define ST7703_CMD_SETSCR 0xC0
+#define ST7703_CMD_SETPOWER 0xC1
+#define ST7703_CMD_UNK_C6 0xC6
+#define ST7703_CMD_SETPANEL 0xCC
+#define ST7703_CMD_SETGAMMA 0xE0
+#define ST7703_CMD_SETEQ 0xE3
+#define ST7703_CMD_SETGIP1 0xE9
+#define ST7703_CMD_SETGIP2 0xEA
+
+struct st7703_panel_desc {
+ const struct drm_display_mode *mode;
+ unsigned int lanes;
+ unsigned long flags;
+ enum mipi_dsi_pixel_format format;
+ const char *const *supply_names;
+ unsigned int num_supplies;
+};
+
+struct st7703 {
+ struct device *dev;
+ struct drm_panel panel;
+ struct gpio_desc *reset_gpio;
+ struct regulator_bulk_data *supplies;
+ const struct st7703_panel_desc *desc;
+ bool prepared;
+};
+
+static inline struct st7703 *panel_to_st7703(struct drm_panel *panel)
+{
+ return container_of(panel, struct st7703, panel);
+}
+
+#define dsi_dcs_write_seq(dsi, cmd, seq...) do { \
+ static const u8 d[] = { seq }; \
+ int ret; \
+ ret = mipi_dsi_dcs_write(dsi, cmd, d, ARRAY_SIZE(d)); \
+ if (ret < 0) \
+ return ret; \
+ } while (0)
+
+static int st7703_init_sequence(struct st7703 *ctx)
+{
+ struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);
+ struct device *dev = ctx->dev;
+ int ret;
+
+ /*
+ * Init sequence was supplied by the panel vendor.
+ */
+ dsi_dcs_write_seq(dsi, ST7703_CMD_SETEXTC,
+ 0xF1, 0x12, 0x83);
+ dsi_dcs_write_seq(dsi, ST7703_CMD_SETMIPI,
+ 0x33, 0x81, 0x05, 0xF9, 0x0E, 0x0E, 0x20, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x44, 0x25,
+ 0x00, 0x91, 0x0a, 0x00, 0x00, 0x02, 0x4F, 0x11,
+ 0x00, 0x00, 0x37);
+ dsi_dcs_write_seq(dsi, ST7703_CMD_SETPOWER_EXT,
+ 0x25, 0x22, 0x20, 0x03);
+ dsi_dcs_write_seq(dsi, ST7703_CMD_SETRGBIF,
+ 0x10, 0x10, 0x05, 0x05, 0x03, 0xFF, 0x00, 0x00,
+ 0x00, 0x00);
+ dsi_dcs_write_seq(dsi, ST7703_CMD_SETSCR,
+ 0x73, 0x73, 0x50, 0x50, 0x00, 0xC0, 0x08, 0x70,
+ 0x00);
+ dsi_dcs_write_seq(dsi, ST7703_CMD_SETVDC, 0x4E);
+ dsi_dcs_write_seq(dsi, ST7703_CMD_SETPANEL, 0x0B);
+ dsi_dcs_write_seq(dsi, ST7703_CMD_SETCYC, 0x80);
+ dsi_dcs_write_seq(dsi, ST7703_CMD_SETDISP, 0xF0, 0x12, 0xF0);
+ dsi_dcs_write_seq(dsi, ST7703_CMD_SETEQ,
+ 0x00, 0x00, 0x0B, 0x0B, 0x10, 0x10, 0x00, 0x00,
+ 0x00, 0x00, 0xFF, 0x00, 0xC0, 0x10);
+ dsi_dcs_write_seq(dsi, 0xC6, 0x01, 0x00, 0xFF, 0xFF, 0x00);
+ dsi_dcs_write_seq(dsi, ST7703_CMD_SETPOWER,
+ 0x74, 0x00, 0x32, 0x32, 0x77, 0xF1, 0xFF, 0xFF,
+ 0xCC, 0xCC, 0x77, 0x77);
+ dsi_dcs_write_seq(dsi, ST7703_CMD_SETBGP, 0x07, 0x07);
+ dsi_dcs_write_seq(dsi, ST7703_CMD_SETVCOM, 0x2C, 0x2C);
+ dsi_dcs_write_seq(dsi, 0xBF, 0x02, 0x11, 0x00);
+
+ dsi_dcs_write_seq(dsi, ST7703_CMD_SETGIP1,
+ 0x82, 0x10, 0x06, 0x05, 0xA2, 0x0A, 0xA5, 0x12,
+ 0x31, 0x23, 0x37, 0x83, 0x04, 0xBC, 0x27, 0x38,
+ 0x0C, 0x00, 0x03, 0x00, 0x00, 0x00, 0x0C, 0x00,
+ 0x03, 0x00, 0x00, 0x00, 0x75, 0x75, 0x31, 0x88,
+ 0x88, 0x88, 0x88, 0x88, 0x88, 0x13, 0x88, 0x64,
+ 0x64, 0x20, 0x88, 0x88, 0x88, 0x88, 0x88, 0x88,
+ 0x02, 0x88, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00);
+ dsi_dcs_write_seq(dsi, ST7703_CMD_SETGIP2,
+ 0x02, 0x21, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x02, 0x46, 0x02, 0x88,
+ 0x88, 0x88, 0x88, 0x88, 0x88, 0x64, 0x88, 0x13,
+ 0x57, 0x13, 0x88, 0x88, 0x88, 0x88, 0x88, 0x88,
+ 0x75, 0x88, 0x23, 0x14, 0x00, 0x00, 0x02, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x03, 0x0A,
+ 0xA5, 0x00, 0x00, 0x00, 0x00);
+ dsi_dcs_write_seq(dsi, ST7703_CMD_SETGAMMA,
+ 0x00, 0x09, 0x0D, 0x23, 0x27, 0x3C, 0x41, 0x35,
+ 0x07, 0x0D, 0x0E, 0x12, 0x13, 0x10, 0x12, 0x12,
+ 0x18, 0x00, 0x09, 0x0D, 0x23, 0x27, 0x3C, 0x41,
+ 0x35, 0x07, 0x0D, 0x0E, 0x12, 0x13, 0x10, 0x12,
+ 0x12, 0x18);
+ msleep(20);
+
+ ret = mipi_dsi_dcs_exit_sleep_mode(dsi);
+ if (ret < 0) {
+ DRM_DEV_ERROR(dev, "Failed to exit sleep mode\n");
+ return ret;
+ }
+ msleep(250);
+
+ ret = mipi_dsi_dcs_set_display_on(dsi);
+ if (ret)
+ return ret;
+ msleep(50);
+
+ DRM_DEV_DEBUG_DRIVER(dev, "Panel init sequence done\n");
+ return 0;
+}
+
+static int st7703_prepare(struct drm_panel *panel)
+{
+ struct st7703 *ctx = panel_to_st7703(panel);
+ int ret;
+
+ if (ctx->prepared)
+ return 0;
+
+ ret = regulator_bulk_enable(ctx->desc->num_supplies, ctx->supplies);
+ if (ret)
+ return ret;
+
+ DRM_DEV_DEBUG_DRIVER(ctx->dev, "Resetting the panel\n");
+ gpiod_set_value_cansleep(ctx->reset_gpio, 1);
+ usleep_range(20, 40);
+ gpiod_set_value_cansleep(ctx->reset_gpio, 0);
+ msleep(20);
+
+ ctx->prepared = true;
+
+ return 0;
+}
+
+static int st7703_enable(struct drm_panel *panel)
+{
+ struct st7703 *ctx = panel_to_st7703(panel);
+ int ret;
+
+ ret = st7703_init_sequence(ctx);
+ if (ret < 0) {
+ DRM_DEV_ERROR(ctx->dev, "Panel init sequence failed: %d\n",
+ ret);
+ return ret;
+ }
+
+ return 0;
+}
+
+static int st7703_disable(struct drm_panel *panel)
+{
+ struct st7703 *ctx = panel_to_st7703(panel);
+ struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);
+
+ return mipi_dsi_dcs_set_display_off(dsi);
+}
+
+static int st7703_unprepare(struct drm_panel *panel)
+{
+ struct st7703 *ctx = panel_to_st7703(panel);
+
+ if (!ctx->prepared)
+ return 0;
+
+ gpiod_set_value_cansleep(ctx->reset_gpio, 1);
+ regulator_bulk_disable(ctx->desc->num_supplies, ctx->supplies);
+ ctx->prepared = false;
+
+ return 0;
+}
+
+static int st7703_get_modes(struct drm_panel *panel,
+ struct drm_connector *connector)
+{
+ struct st7703 *ctx = panel_to_st7703(panel);
+ struct drm_display_mode *mode;
+
+ mode = drm_mode_duplicate(connector->dev, ctx->desc->mode);
+ if (!mode) {
+ DRM_DEV_ERROR(ctx->dev, "Failed to add mode\n");
+ return -ENOMEM;
+ }
+
+ drm_mode_set_name(mode);
+
+ mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED;
+ connector->display_info.width_mm = mode->width_mm;
+ connector->display_info.height_mm = mode->height_mm;
+ drm_mode_probed_add(connector, mode);
+
+ return 1;
+}
+
+static const struct drm_panel_funcs st7703_drm_funcs = {
+ .prepare = st7703_prepare,
+ .enable = st7703_enable,
+ .disable = st7703_disable,
+ .unprepare = st7703_unprepare,
+ .get_modes = st7703_get_modes,
+};
+
+static const struct drm_display_mode xbd599_mode = {
+ .hdisplay = 720,
+ .hsync_start = 720 + 40,
+ .hsync_end = 720 + 40 + 40,
+ .htotal = 720 + 40 + 40 + 40,
+ .vdisplay = 1440,
+ .vsync_start = 1440 + 18,
+ .vsync_end = 1440 + 18 + 10,
+ .vtotal = 1440 + 18 + 10 + 17,
+ .vrefresh = 60,
+ .clock = 69000,
+ .flags = DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC,
+
+ .width_mm = 68,
+ .height_mm = 136,
+ .type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED,
+};
+
+static const char * const xbd599_supply_names[] = {
+ "iovcc",
+ "vcc",
+};
+
+static const struct st7703_panel_desc xbd599_desc = {
+ .mode = &xbd599_mode,
+ .lanes = 4,
+ .flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_VIDEO_SYNC_PULSE,
+ .format = MIPI_DSI_FMT_RGB888,
+ .supply_names = xbd599_supply_names,
+ .num_supplies = ARRAY_SIZE(xbd599_supply_names),
+};
+
+static int st7703_probe(struct mipi_dsi_device *dsi)
+{
+ const struct st7703_panel_desc *desc;
+ struct device *dev = &dsi->dev;
+ struct st7703 *ctx;
+ int i, ret;
+
+ ctx = devm_kzalloc(dev, sizeof(*ctx), GFP_KERNEL);
+ if (!ctx)
+ return -ENOMEM;
+
+ ctx->dev = dev;
+ ctx->desc = desc = of_device_get_match_data(dev);
+
+ dsi->mode_flags = desc->flags;
+ dsi->format = desc->format;
+ dsi->lanes = desc->lanes;
+
+ ctx->supplies = devm_kcalloc(&dsi->dev, desc->num_supplies,
+ sizeof(*ctx->supplies),
+ GFP_KERNEL);
+ if (!ctx->supplies)
+ return -ENOMEM;
+
+ for (i = 0; i < desc->num_supplies; i++)
+ ctx->supplies[i].supply = desc->supply_names[i];
+
+ ret = devm_regulator_bulk_get(&dsi->dev, desc->num_supplies,
+ ctx->supplies);
+ if (ret < 0)
+ return ret;
+
+ ctx->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_LOW);
+ if (IS_ERR(ctx->reset_gpio)) {
+ DRM_DEV_ERROR(dev, "Can't get reset gpio\n");
+ return PTR_ERR(ctx->reset_gpio);
+ }
+
+ mipi_dsi_set_drvdata(dsi, ctx);
+
+ drm_panel_init(&ctx->panel, &dsi->dev, &st7703_drm_funcs,
+ DRM_MODE_CONNECTOR_DSI);
+
+ ret = drm_panel_of_backlight(&ctx->panel);
+ if (ret)
+ return ret;
+
+ drm_panel_add(&ctx->panel);
+
+ ret = mipi_dsi_attach(dsi);
+ if (ret < 0) {
+ DRM_DEV_ERROR(dev, "mipi_dsi_attach failed. Is host ready?\n");
+ drm_panel_remove(&ctx->panel);
+ return ret;
+ }
+
+ return 0;
+}
+
+static void st7703_shutdown(struct mipi_dsi_device *dsi)
+{
+ struct st7703 *ctx = mipi_dsi_get_drvdata(dsi);
+ int ret;
+
+ ret = drm_panel_unprepare(&ctx->panel);
+ if (ret < 0)
+ DRM_DEV_ERROR(&dsi->dev, "Failed to unprepare panel: %d\n",
+ ret);
+}
+
+static int st7703_remove(struct mipi_dsi_device *dsi)
+{
+ struct st7703 *ctx = mipi_dsi_get_drvdata(dsi);
+ int ret;
+
+ st7703_shutdown(dsi);
+
+ ret = mipi_dsi_detach(dsi);
+ if (ret < 0)
+ DRM_DEV_ERROR(&dsi->dev, "Failed to detach from DSI host: %d\n",
+ ret);
+
+ drm_panel_remove(&ctx->panel);
+
+ return 0;
+}
+
+static const struct of_device_id st7703_of_match[] = {
+ { .compatible = "xingbangda,xbd599", .data = &xbd599_desc },
+ { /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(of, st7703_of_match);
+
+static struct mipi_dsi_driver st7703_driver = {
+ .probe = st7703_probe,
+ .remove = st7703_remove,
+ .shutdown = st7703_shutdown,
+ .driver = {
+ .name = "st7703",
+ .of_match_table = st7703_of_match,
+ },
+};
+module_mipi_dsi_driver(st7703_driver);
+
+MODULE_AUTHOR("Icenowy Zheng <icenowy@aosc.io>");
+MODULE_DESCRIPTION("DRM driver for Sitronix ST7703 MIPI DSI panel");
+MODULE_LICENSE("GPL v2");