[PATCH v2 08/11] drm/panel: Add Ilitek ILI9805 panel driver
From: Dario Binacchi
Date: Sun Nov 26 2023 - 10:48:06 EST
From: Michael Trimarchi <michael@xxxxxxxxxxxxxxxxxxxx>
The GPM1790A0 panel is based on the Ilitek ILI9805 Controller.
Add a driver for it.
Signed-off-by: Michael Trimarchi <michael@xxxxxxxxxxxxxxxxxxxx>
Signed-off-by: Dario Binacchi <dario.binacchi@xxxxxxxxxxxxxxxxxxxx>
---
(no changes since v1)
MAINTAINERS | 6 +
drivers/gpu/drm/panel/Kconfig | 9 +
drivers/gpu/drm/panel/Makefile | 1 +
drivers/gpu/drm/panel/panel-ilitek-ili9805.c | 365 +++++++++++++++++++
4 files changed, 381 insertions(+)
create mode 100644 drivers/gpu/drm/panel/panel-ilitek-ili9805.c
diff --git a/MAINTAINERS b/MAINTAINERS
index ab6985806793..db2a2e6ee14f 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -6647,6 +6647,12 @@ T: git git://anongit.freedesktop.org/drm/drm-misc
F: Documentation/devicetree/bindings/display/ilitek,ili9486.yaml
F: drivers/gpu/drm/tiny/ili9486.c
+DRM DRIVER FOR ILITEK ILI9805 PANELS
+M: Michael Trimarchi <michael@xxxxxxxxxxxxxxxxxxxx>
+S: Maintained
+F: Documentation/devicetree/bindings/display/panel/ilitek,ili9805.yaml
+F: drivers/gpu/drm/panel/panel-ilitek-ili9805.c
+
DRM DRIVER FOR JADARD JD9365DA-H3 MIPI-DSI LCD PANELS
M: Jagan Teki <jagan@xxxxxxxxxx>
S: Maintained
diff --git a/drivers/gpu/drm/panel/Kconfig b/drivers/gpu/drm/panel/Kconfig
index d018702be3dc..dad938cf6dec 100644
--- a/drivers/gpu/drm/panel/Kconfig
+++ b/drivers/gpu/drm/panel/Kconfig
@@ -194,6 +194,15 @@ config DRM_PANEL_ILITEK_ILI9341
QVGA (240x320) RGB panels. support serial & parallel rgb
interface.
+config DRM_PANEL_ILITEK_ILI9805
+ tristate "Ilitek ILI9805-based panels"
+ depends on OF
+ depends on DRM_MIPI_DSI
+ depends on BACKLIGHT_CLASS_DEVICE
+ help
+ Say Y if you want to enable support for panels based on the
+ Ilitek ILI9805 controller.
+
config DRM_PANEL_ILITEK_ILI9881C
tristate "Ilitek ILI9881C-based panels"
depends on OF
diff --git a/drivers/gpu/drm/panel/Makefile b/drivers/gpu/drm/panel/Makefile
index f267d932c2b5..d94a644d0a6c 100644
--- a/drivers/gpu/drm/panel/Makefile
+++ b/drivers/gpu/drm/panel/Makefile
@@ -17,6 +17,7 @@ obj-$(CONFIG_DRM_PANEL_FEIYANG_FY07024DI26A30D) += panel-feiyang-fy07024di26a30d
obj-$(CONFIG_DRM_PANEL_HIMAX_HX8394) += panel-himax-hx8394.o
obj-$(CONFIG_DRM_PANEL_ILITEK_IL9322) += panel-ilitek-ili9322.o
obj-$(CONFIG_DRM_PANEL_ILITEK_ILI9341) += panel-ilitek-ili9341.o
+obj-$(CONFIG_DRM_PANEL_ILITEK_ILI9805) += panel-ilitek-ili9805.o
obj-$(CONFIG_DRM_PANEL_ILITEK_ILI9881C) += panel-ilitek-ili9881c.o
obj-$(CONFIG_DRM_PANEL_ILITEK_ILI9882T) += panel-ilitek-ili9882t.o
obj-$(CONFIG_DRM_PANEL_INNOLUX_EJ030NA) += panel-innolux-ej030na.o
diff --git a/drivers/gpu/drm/panel/panel-ilitek-ili9805.c b/drivers/gpu/drm/panel/panel-ilitek-ili9805.c
new file mode 100644
index 000000000000..749959e10d92
--- /dev/null
+++ b/drivers/gpu/drm/panel/panel-ilitek-ili9805.c
@@ -0,0 +1,365 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2020 BSH Hausgerate GmbH
+ */
+
+#include <linux/delay.h>
+#include <linux/device.h>
+#include <linux/err.h>
+#include <linux/errno.h>
+#include <linux/fb.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/of_device.h>
+
+#include <linux/gpio/consumer.h>
+#include <linux/regulator/consumer.h>
+
+#include <drm/drm_mipi_dsi.h>
+#include <drm/drm_modes.h>
+#include <drm/drm_panel.h>
+
+#include <video/mipi_display.h>
+
+#define ILI9805_EXTCMD_CMD_SET_ENABLE_REG (0xff)
+#define ILI9805_SETEXTC_PARAMETER1 (0xff)
+#define ILI9805_SETEXTC_PARAMETER2 (0x98)
+#define ILI9805_SETEXTC_PARAMETER3 (0x05)
+
+#define ILI9805_INSTR(_delay, ...) { \
+ .delay = (_delay), \
+ .len = sizeof((u8[]) {__VA_ARGS__}), \
+ .data = (u8[]){__VA_ARGS__} \
+ }
+
+struct ili9805_instr {
+ size_t len;
+ const u8 *data;
+ u32 delay;
+};
+
+struct ili9805_desc {
+ const char *name;
+ const struct ili9805_instr *init;
+ const size_t init_length;
+ const struct drm_display_mode *mode;
+ u32 width_mm;
+ u32 height_mm;
+};
+
+struct ili9805 {
+ struct drm_panel panel;
+ struct mipi_dsi_device *dsi;
+ const struct ili9805_desc *desc;
+
+ struct regulator *dvdd;
+ struct regulator *avdd;
+ struct gpio_desc *reset_gpio;
+
+ bool prepared;
+};
+
+static const struct ili9805_instr gpm1780a0_init[] = {
+ ILI9805_INSTR(100, ILI9805_EXTCMD_CMD_SET_ENABLE_REG, ILI9805_SETEXTC_PARAMETER1,
+ ILI9805_SETEXTC_PARAMETER2, ILI9805_SETEXTC_PARAMETER3),
+ ILI9805_INSTR(100, 0xFD, 0x0F, 0x10, 0x44, 0x00),
+ ILI9805_INSTR(0, 0xf8, 0x18, 0x02, 0x02, 0x18, 0x02, 0x02, 0x30, 0x00,
+ 0x00, 0x30, 0x00, 0x00, 0x30, 0x00, 0x00),
+ ILI9805_INSTR(0, 0xB8, 0x62),
+ ILI9805_INSTR(0, 0xF1, 0x00),
+ ILI9805_INSTR(0, 0xF2, 0x00, 0x58, 0x40),
+ ILI9805_INSTR(0, 0xF3, 0x60, 0x83, 0x04),
+ ILI9805_INSTR(0, 0xFC, 0x04, 0x0F, 0x01),
+ ILI9805_INSTR(0, 0xEB, 0x08, 0x0F),
+ ILI9805_INSTR(0, 0xe0, 0x00, 0x08, 0x0d, 0x0e, 0x0e, 0x0d, 0x0a, 0x08, 0x04,
+ 0x08, 0x0d, 0x0f, 0x0b, 0x1c, 0x14, 0x0a),
+ ILI9805_INSTR(0, 0xe1, 0x00, 0x08, 0x0d, 0x0e, 0x0e, 0x0d, 0x0a, 0x08, 0x04,
+ 0x08, 0x0d, 0x0f, 0x0b, 0x1c, 0x14, 0x0a),
+ ILI9805_INSTR(10, 0xc1, 0x13, 0x39, 0x19, 0x06),
+ ILI9805_INSTR(10, 0xc7, 0xe5),
+ ILI9805_INSTR(10, 0xB1, 0x00, 0x12, 0x14),
+ ILI9805_INSTR(10, 0xB4, 0x02),
+ ILI9805_INSTR(0, 0xBB, 0x14, 0x55),
+ ILI9805_INSTR(0, MIPI_DCS_SET_ADDRESS_MODE, 0x08),
+ ILI9805_INSTR(0, MIPI_DCS_SET_PIXEL_FORMAT, 0x77),
+ ILI9805_INSTR(0, 0x20),
+ ILI9805_INSTR(0, 0xB0, 0x01),
+ ILI9805_INSTR(0, 0xB6, 0x31, 0x00, 0xef),
+ ILI9805_INSTR(0, 0xDF, 0x23),
+ ILI9805_INSTR(0, 0xB9, 0x02, 0x00),
+};
+
+static inline struct ili9805 *panel_to_ili9805(struct drm_panel *panel)
+{
+ return container_of(panel, struct ili9805, panel);
+}
+
+static int ili9805_power_on(struct ili9805 *ctx)
+{
+ struct mipi_dsi_device *dsi = ctx->dsi;
+ struct device *dev = &dsi->dev;
+ int ret;
+
+ ret = regulator_enable(ctx->avdd);
+ if (ret) {
+ dev_err(dev, "Failed to enable avdd regulator (%d)\n", ret);
+ return ret;
+ }
+
+ ret = regulator_enable(ctx->dvdd);
+ if (ret) {
+ dev_err(dev, "Failed to enable dvdd regulator (%d)\n", ret);
+ regulator_disable(ctx->avdd);
+ return ret;
+ }
+
+ gpiod_set_value(ctx->reset_gpio, 0);
+ usleep_range(5000, 10000);
+ gpiod_set_value(ctx->reset_gpio, 1);
+ msleep(120);
+
+ return 0;
+}
+
+static int ili9805_power_off(struct ili9805 *ctx)
+{
+ gpiod_set_value(ctx->reset_gpio, 0);
+ regulator_disable(ctx->dvdd);
+ regulator_disable(ctx->avdd);
+
+ return 0;
+}
+
+static int ili9805_activate(struct ili9805 *ctx)
+{
+ struct mipi_dsi_device *dsi = ctx->dsi;
+ struct device *dev = &dsi->dev;
+ int i, ret;
+
+ for (i = 0; i < ctx->desc->init_length; i++) {
+ const struct ili9805_instr *instr = &ctx->desc->init[i];
+
+ ret = mipi_dsi_dcs_write_buffer(ctx->dsi, instr->data, instr->len);
+ if (ret < 0)
+ return ret;
+
+ if (instr->delay > 0)
+ msleep(instr->delay);
+ }
+
+ ret = mipi_dsi_dcs_exit_sleep_mode(ctx->dsi);
+ if (ret) {
+ dev_err(dev, "Failed to exit sleep mode (%d)\n", ret);
+ return ret;
+ }
+
+ usleep_range(5000, 6000);
+
+ ret = mipi_dsi_dcs_set_display_on(ctx->dsi);
+ if (ret) {
+ dev_err(dev, "Failed to set display ON (%d)\n", ret);
+ return ret;
+ }
+
+ return 0;
+}
+
+static int ili9805_prepare(struct drm_panel *panel)
+{
+ struct ili9805 *ctx = panel_to_ili9805(panel);
+ int ret;
+
+ if (ctx->prepared)
+ return 0;
+
+ ret = ili9805_power_on(ctx);
+ if (ret)
+ return ret;
+
+ ret = ili9805_activate(ctx);
+ if (ret) {
+ ili9805_power_off(ctx);
+ return ret;
+ }
+
+ ctx->prepared = true;
+
+ return 0;
+}
+
+static int ili9805_deactivate(struct ili9805 *ctx)
+{
+ struct mipi_dsi_device *dsi = ctx->dsi;
+ struct device *dev = &dsi->dev;
+ int ret;
+
+ ret = mipi_dsi_dcs_set_display_off(ctx->dsi);
+ if (ret < 0) {
+ dev_err(dev, "Failed to set display OFF (%d)\n", ret);
+ return ret;
+ }
+
+ usleep_range(5000, 10000);
+
+ ret = mipi_dsi_dcs_enter_sleep_mode(ctx->dsi);
+ if (ret < 0) {
+ dev_err(dev, "Failed to enter sleep mode (%d)\n", ret);
+ return ret;
+ }
+
+ return 0;
+}
+
+static int ili9805_unprepare(struct drm_panel *panel)
+{
+ struct ili9805 *ctx = panel_to_ili9805(panel);
+
+ if (!ctx->prepared)
+ return 0;
+
+ ili9805_deactivate(ctx);
+ ili9805_power_off(ctx);
+
+ ctx->prepared = false;
+
+ return 0;
+}
+
+static const struct drm_display_mode gpm1780a0_timing = {
+ .clock = 26227,
+
+ .hdisplay = 480,
+ .hsync_start = 480 + 10,
+ .hsync_end = 480 + 10 + 2,
+ .htotal = 480 + 10 + 2 + 36,
+
+ .vdisplay = 480,
+ .vsync_start = 480 + 2,
+ .vsync_end = 480 + 10 + 4,
+ .vtotal = 480 + 2 + 4 + 10,
+};
+
+static int ili9805_get_modes(struct drm_panel *panel,
+ struct drm_connector *connector)
+{
+ struct ili9805 *ctx = panel_to_ili9805(panel);
+ struct drm_display_mode *mode;
+
+ mode = drm_mode_duplicate(connector->dev, ctx->desc->mode);
+ if (!mode) {
+ dev_err(&ctx->dsi->dev, "failed to add mode %ux%ux@%u\n",
+ ctx->desc->mode->hdisplay,
+ ctx->desc->mode->vdisplay,
+ drm_mode_vrefresh(ctx->desc->mode));
+ return -ENOMEM;
+ }
+
+ drm_mode_set_name(mode);
+
+ mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED;
+ drm_mode_probed_add(connector, mode);
+
+ connector->display_info.width_mm = mode->width_mm;
+ connector->display_info.height_mm = mode->height_mm;
+
+ return 1;
+}
+
+static const struct drm_panel_funcs ili9805_funcs = {
+ .prepare = ili9805_prepare,
+ .unprepare = ili9805_unprepare,
+ .get_modes = ili9805_get_modes,
+};
+
+static int ili9805_dsi_probe(struct mipi_dsi_device *dsi)
+{
+ struct ili9805 *ctx;
+ int ret;
+
+ ctx = devm_kzalloc(&dsi->dev, sizeof(*ctx), GFP_KERNEL);
+ if (!ctx)
+ return -ENOMEM;
+ mipi_dsi_set_drvdata(dsi, ctx);
+ ctx->dsi = dsi;
+ ctx->desc = of_device_get_match_data(&dsi->dev);
+
+ dsi->format = MIPI_DSI_FMT_RGB888;
+ dsi->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_NO_EOT_PACKET;
+ dsi->lanes = 2;
+
+ drm_panel_init(&ctx->panel, &dsi->dev, &ili9805_funcs,
+ DRM_MODE_CONNECTOR_DSI);
+
+ ctx->dvdd = devm_regulator_get(&dsi->dev, "dvdd");
+ if (IS_ERR(ctx->dvdd))
+ return PTR_ERR(ctx->dvdd);
+ ctx->avdd = devm_regulator_get(&dsi->dev, "avdd");
+ if (IS_ERR(ctx->avdd))
+ return PTR_ERR(ctx->avdd);
+
+ ctx->reset_gpio = devm_gpiod_get(&dsi->dev, "reset", GPIOD_OUT_LOW);
+ if (IS_ERR(ctx->reset_gpio)) {
+ dev_err(&dsi->dev, "Couldn't get our reset GPIO\n");
+ return PTR_ERR(ctx->reset_gpio);
+ }
+
+ ctx->panel.prepare_prev_first = true;
+ ret = drm_panel_of_backlight(&ctx->panel);
+ if (ret)
+ return ret;
+
+ drm_panel_add(&ctx->panel);
+
+ ret = mipi_dsi_attach(dsi);
+ if (ret < 0) {
+ dev_err(&dsi->dev, "mipi_dsi_attach failed: %d\n", ret);
+ drm_panel_remove(&ctx->panel);
+ return ret;
+ }
+
+ return 0;
+}
+
+static void ili9805_dsi_remove(struct mipi_dsi_device *dsi)
+{
+ struct ili9805 *ctx = mipi_dsi_get_drvdata(dsi);
+ int ret;
+
+ ret = mipi_dsi_detach(dsi);
+ if (ret < 0)
+ dev_err(&dsi->dev, "failed to detach from DSI host: %d\n",
+ ret);
+
+ drm_panel_remove(&ctx->panel);
+}
+
+static const struct ili9805_desc gpm1780a0_desc = {
+ .init = gpm1780a0_init,
+ .init_length = ARRAY_SIZE(gpm1780a0_init),
+ .mode = &gpm1780a0_timing,
+ .width_mm = 65,
+ .height_mm = 65,
+};
+
+static const struct of_device_id ili9805_of_match[] = {
+ { .compatible = "giantplus,gpm1790a0", .data = &gpm1780a0_desc },
+ { }
+};
+MODULE_DEVICE_TABLE(of, ili9805_of_match);
+
+static struct mipi_dsi_driver ili9805_dsi_driver = {
+ .probe = ili9805_dsi_probe,
+ .remove = ili9805_dsi_remove,
+ .driver = {
+ .name = "ili9805-dsi",
+ .of_match_table = ili9805_of_match,
+ },
+};
+module_mipi_dsi_driver(ili9805_dsi_driver);
+
+MODULE_AUTHOR("Matthias Proske <Matthias.Proske@xxxxxxxx>");
+MODULE_AUTHOR("Michael Trimarchi <michael@xxxxxxxxxxxxxxxxxxxx>");
+MODULE_DESCRIPTION("Ilitek ILI9805 Controller Driver");
+MODULE_LICENSE("GPL");
--
2.42.0