The LXD M9189A panel is based on the EK79007AD3 DSI display controller.
It currently supports only 4 lane operation.
Signed-off-by: Rouven Czerwinski <r.czerwinski@xxxxxxxxxxxxxx>
---
MAINTAINERS | 6 +
drivers/gpu/drm/panel/Kconfig | 9 +
drivers/gpu/drm/panel/Makefile | 1 +
drivers/gpu/drm/panel/panel-lxd-m9189a.c | 261 +++++++++++++++++++++++
4 files changed, 277 insertions(+)
create mode 100644 drivers/gpu/drm/panel/panel-lxd-m9189a.c
diff --git a/MAINTAINERS b/MAINTAINERS
index e9659a5a7fb33..e4d749b403c28 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -7179,6 +7179,12 @@ F: Documentation/devicetree/bindings/display/lvds.yaml
F: Documentation/devicetree/bindings/display/panel/panel-lvds.yaml
F: drivers/gpu/drm/panel/panel-lvds.c
+DRM DRIVER FOR LXD M9189A PANELS
+M: Rouven Czerwinski <r.czerwinski@xxxxxxxxxxxxxx>
+S: Maintained
+F: Documentation/devicetree/bindings/display/panel/lxd,m9189a.yaml
+F: drivers/gpu/drm/panel/panel-lxd-m9189a.c
+
DRM DRIVER FOR MANTIX MLAF057WE51 PANELS
M: Guido Günther <agx@xxxxxxxxxxx>
R: Purism Kernel Team <kernel@xxxxxxx>
diff --git a/drivers/gpu/drm/panel/Kconfig b/drivers/gpu/drm/panel/Kconfig
index d3a9a9fafe4ec..7667ac1ef80e3 100644
--- a/drivers/gpu/drm/panel/Kconfig
+++ b/drivers/gpu/drm/panel/Kconfig
@@ -135,6 +135,15 @@ config DRM_PANEL_FEIYANG_FY07024DI26A30D
Say Y if you want to enable support for panels based on the
Feiyang FY07024DI26A30-D MIPI-DSI interface.
+config DRM_PANEL_LXD_M9189A
+ tristate "LXD M9189A MIPI-DSI LCD panel"
+ depends on OF
+ depends on DRM_MIPI_DSI
+ depends on BACKLIGHT_CLASS_DEVICE
+ help
+ Say Y if you want to enable support for the LXD M9189A 4-Lane
+ 1024x600 MIPI DSI panel.
+
config DRM_PANEL_DSI_CM
tristate "Generic DSI command mode panels"
depends on OF
diff --git a/drivers/gpu/drm/panel/Makefile b/drivers/gpu/drm/panel/Makefile
index 987a087024103..6d77c304e7529 100644
--- a/drivers/gpu/drm/panel/Makefile
+++ b/drivers/gpu/drm/panel/Makefile
@@ -16,6 +16,7 @@ obj-$(CONFIG_DRM_PANEL_EBBG_FT8719) += panel-ebbg-ft8719.o
obj-$(CONFIG_DRM_PANEL_ELIDA_KD35T133) += panel-elida-kd35t133.o
obj-$(CONFIG_DRM_PANEL_FEIXIN_K101_IM2BA02) += panel-feixin-k101-im2ba02.o
obj-$(CONFIG_DRM_PANEL_FEIYANG_FY07024DI26A30D) += panel-feiyang-fy07024di26a30d.o
+obj-$(CONFIG_DRM_PANEL_LXD_M9189A) += panel-lxd-m9189a.o
obj-$(CONFIG_DRM_PANEL_HIMAX_HX83102) += panel-himax-hx83102.o
obj-$(CONFIG_DRM_PANEL_HIMAX_HX83112A) += panel-himax-hx83112a.o
obj-$(CONFIG_DRM_PANEL_HIMAX_HX8394) += panel-himax-hx8394.o
diff --git a/drivers/gpu/drm/panel/panel-lxd-m9189a.c b/drivers/gpu/drm/panel/panel-lxd-m9189a.c
new file mode 100644
index 0000000000000..71c5a18541bae
--- /dev/null
+++ b/drivers/gpu/drm/panel/panel-lxd-m9189a.c
@@ -0,0 +1,261 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Generated with linux-mdss-dsi-panel-driver-generator from vendor device tree.
+ * Copyright (c) 2024 Luca Weiss <luca.weiss@xxxxxxxxxxxxx>
+ */
+
+#include <linux/delay.h>
+#include <linux/gpio/consumer.h>
+#include <linux/module.h>
+#include <linux/of.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_probe_helper.h>
+
+/* Manufacturer specific DSI commands */
+#define EK79007AD3_GAMMA1 0x80
+#define EK79007AD3_GAMMA2 0x81
+#define EK79007AD3_GAMMA3 0x82
+#define EK79007AD3_GAMMA4 0x83
+#define EK79007AD3_GAMMA5 0x84
+#define EK79007AD3_GAMMA6 0x85
+#define EK79007AD3_GAMMA7 0x86
+#define EK79007AD3_PANEL_CTRL3 0xB2
+
+struct ek79007ad3_panel {
+ struct drm_panel panel;
+ struct mipi_dsi_device *dsi;
+ struct regulator *supply;
+ struct gpio_desc *reset_gpio;
+ struct gpio_desc *standby_gpio;
+};
+
+static inline struct ek79007ad3_panel *to_ek79007ad3_panel(struct drm_panel *panel)
+{
+ return container_of(panel, struct ek79007ad3_panel, panel);
+}
+
+static void ek79007ad3_reset(struct ek79007ad3_panel *ctx)
+{
+ gpiod_set_value_cansleep(ctx->reset_gpio, 0);
+ msleep(20);
+ gpiod_set_value_cansleep(ctx->reset_gpio, 1);
+ msleep(30);
+ gpiod_set_value_cansleep(ctx->reset_gpio, 0);
+ msleep(55);
+}
+
+static int ek79007ad3_on(struct ek79007ad3_panel *ctx)
+{
+ struct mipi_dsi_device *dsi = ctx->dsi;
+ struct device *dev = &dsi->dev;
+ int ret;
+
+ dsi->mode_flags |= MIPI_DSI_MODE_LPM;
+
+ /* Gamma 2.2 */
+ mipi_dsi_dcs_write_seq(dsi, EK79007AD3_GAMMA1, 0x48);
+ mipi_dsi_dcs_write_seq(dsi, EK79007AD3_GAMMA2, 0xB8);
+ mipi_dsi_dcs_write_seq(dsi, EK79007AD3_GAMMA3, 0x88);
+ mipi_dsi_dcs_write_seq(dsi, EK79007AD3_GAMMA4, 0x88);
+ mipi_dsi_dcs_write_seq(dsi, EK79007AD3_GAMMA5, 0x58);
+ mipi_dsi_dcs_write_seq(dsi, EK79007AD3_GAMMA6, 0xD2);
+ mipi_dsi_dcs_write_seq(dsi, EK79007AD3_GAMMA7, 0x88);
+ msleep(50);
+
+ /* 4 Lanes */
+ ret = mipi_dsi_generic_write(dsi, (u8[]){ EK79007AD3_PANEL_CTRL3, 0x70 }, 2);
+ if (ret)
+ goto fail;
+
+ ret = mipi_dsi_dcs_exit_sleep_mode(dsi);
+ if (ret < 0) {
+ dev_err(dev, "Failed to exit sleep mode: %d\n", ret);
+ return ret;
+ }
+ msleep(120);
+
+ ret = mipi_dsi_dcs_set_display_on(dsi);
+ msleep(120);
+
+fail:
+ return ret;
+}
+
+static int ek79007ad3_disable(struct drm_panel *panel)
+{
+ struct ek79007ad3_panel *ctx = to_ek79007ad3_panel(panel);
+ struct mipi_dsi_device *dsi = ctx->dsi;
+ struct device *dev = &dsi->dev;
+ int ret;
+
+ dsi->mode_flags &= ~MIPI_DSI_MODE_LPM;
+
+ ret = mipi_dsi_dcs_enter_sleep_mode(dsi);
+ if (ret < 0) {
+ dev_err(dev, "Failed to enter sleep mode: %d\n", ret);
+ return ret;
+ }
+ msleep(120);
+
+ gpiod_set_value_cansleep(ctx->standby_gpio, 1);
+
+ return 0;
+}
+
+static int ek79007ad3_prepare(struct drm_panel *panel)
+{
+ struct ek79007ad3_panel *ctx = to_ek79007ad3_panel(panel);
+ struct mipi_dsi_device *dsi = ctx->dsi;
+ struct device *dev = &ctx->dsi->dev;
+ int ret;
+
+ ret = regulator_enable(ctx->supply);
+ if (ret < 0) {
+ dev_err(dev, "Failed to enable regulators: %d\n", ret);
+ return ret;
+ }
+
+ gpiod_set_value_cansleep(ctx->standby_gpio, 0);
+ msleep(20);
+
+ mipi_dsi_dcs_nop(dsi);
+ usleep_range(1000, 2000);
+
+ ek79007ad3_reset(ctx);
+
+ ret = ek79007ad3_on(ctx);
+ if (ret < 0) {
+ dev_err(dev, "Failed to initialize panel: %d\n", ret);
+ gpiod_set_value_cansleep(ctx->reset_gpio, 1);
+ regulator_disable(ctx->supply);
+ return ret;
+ }
+
+ return 0;
+}
+
+static int ek79007ad3_unprepare(struct drm_panel *panel)
+{
+ struct ek79007ad3_panel *ctx = to_ek79007ad3_panel(panel);
+
+ gpiod_set_value_cansleep(ctx->standby_gpio, 1);
+ msleep(50);
+
+ gpiod_set_value_cansleep(ctx->reset_gpio, 1);
+ regulator_disable(ctx->supply);
+
+ return 0;
+}
+
+static const struct drm_display_mode ek79007ad3_mode = {
+ .clock = 51200,
+ .hdisplay = 1024,
+ .hsync_start = 1024 + 160,
+ .hsync_end = 1024 + 160 + 160,
+ .htotal = 1024 + 160 + 160 + 10,
+ .vdisplay = 600,
+ .vsync_start = 600 + 12,
+ .vsync_end = 600 + 12 + 23,
+ .vtotal = 600 + 23 + 12 + 1,
+ .width_mm = 154,
+ .height_mm = 86,
+};
+
+static int ek79007ad3_get_modes(struct drm_panel *panel,
+ struct drm_connector *connector)
+{
+ return drm_connector_helper_get_modes_fixed(connector, &ek79007ad3_mode);
+}
+
+static const struct drm_panel_funcs ek79007ad3_panel_funcs = {
+ .prepare = ek79007ad3_prepare,
+ .unprepare = ek79007ad3_unprepare,
+ .disable = ek79007ad3_disable,
+ .get_modes = ek79007ad3_get_modes,
+};
+
+static int ek79007ad3_probe(struct mipi_dsi_device *dsi)
+{
+ struct device *dev = &dsi->dev;
+ struct ek79007ad3_panel *ctx;
+ int ret;
+
+ ctx = devm_kzalloc(dev, sizeof(*ctx), GFP_KERNEL);
+ if (!ctx)
+ return -ENOMEM;
+
+ ctx->supply = devm_regulator_get(dev, "vdd");
+ if (IS_ERR(ctx->supply))
+ return dev_err_probe(dev, ret, "Failed to get regulator\n");
+
+ ctx->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_LOW);
+ if (IS_ERR(ctx->reset_gpio))
+ return dev_err_probe(dev, PTR_ERR(ctx->reset_gpio),
+ "Failed to get reset-gpios\n");
+
+ ctx->standby_gpio = devm_gpiod_get(dev, "standby", GPIOD_OUT_LOW);
+ if (IS_ERR(ctx->standby_gpio))
+ return dev_err_probe(dev, PTR_ERR(ctx->standby_gpio),
+ "Failed to get standby-gpios\n");
+
+ ctx->dsi = dsi;
+ mipi_dsi_set_drvdata(dsi, ctx);
+
+ dsi->lanes = 4;
+ dsi->format = MIPI_DSI_FMT_RGB888;
+ dsi->mode_flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_VIDEO_BURST;
+
+ drm_panel_init(&ctx->panel, dev, &ek79007ad3_panel_funcs,
+ DRM_MODE_CONNECTOR_DSI);
+ ctx->panel.prepare_prev_first = true;
+
+ ret = drm_panel_of_backlight(&ctx->panel);
+ if (ret)
+ return dev_err_probe(dev, ret, "Failed to get backlight\n");
+
+ drm_panel_add(&ctx->panel);
+
+ ret = mipi_dsi_attach(dsi);
+ if (ret < 0) {
+ dev_err_probe(dev, ret, "Failed to attach to DSI host\n");
+ drm_panel_remove(&ctx->panel);
+ return ret;
+ }
+
+ return 0;
+}
+
+static void ek79007ad3_remove(struct mipi_dsi_device *dsi)
+{
+ struct ek79007ad3_panel *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 of_device_id ek79007ad3_of_match[] = {
+ { .compatible = "lxd,m9189a" },
+ { /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(of, ek79007ad3_of_match);
+
+static struct mipi_dsi_driver ek79007ad3_driver = {
+ .probe = ek79007ad3_probe,
+ .remove = ek79007ad3_remove,
+ .driver = {
+ .name = "panel-fitipower-ek79007ad3",
+ .of_match_table = ek79007ad3_of_match,
+ },
+};
+module_mipi_dsi_driver(ek79007ad3_driver);
+
+MODULE_DESCRIPTION("DRM driver for ek79007ad3-equipped DSI panels");
+MODULE_LICENSE("GPL");
--
2.39.5
