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>
---
v2:
- use _multi functions
- remove unnecessary dcs_nop function
- calculate pixelclock with timings
suggested by Dmitry Baryshkov
- rename functions to m9189_ prefix
- rename struct and c file to use m9189
- fix commit title to mention m9189
MAINTAINERS | 6 +
drivers/gpu/drm/panel/Kconfig | 9 +
drivers/gpu/drm/panel/Makefile | 1 +
drivers/gpu/drm/panel/panel-lxd-m9189a.c | 241 +++++++++++++++++++++++
4 files changed, 257 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..c9acba8f2432c 100644
--- a/drivers/gpu/drm/panel/Kconfig
+++ b/drivers/gpu/drm/panel/Kconfig
@@ -386,6 +386,15 @@ config DRM_PANEL_LG_SW43408
pixel. It provides a MIPI DSI interface to the host and has a
built-in LED backlight.
+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_MAGNACHIP_D53E6EA8966
tristate "Magnachip D53E6EA8966 DSI panel"
depends on OF && SPI
diff --git a/drivers/gpu/drm/panel/Makefile b/drivers/gpu/drm/panel/Makefile
index 987a087024103..705e9f112eb56 100644
--- a/drivers/gpu/drm/panel/Makefile
+++ b/drivers/gpu/drm/panel/Makefile
@@ -39,6 +39,7 @@ obj-$(CONFIG_DRM_PANEL_LINCOLNTECH_LCD197) += panel-lincolntech-lcd197.o
obj-$(CONFIG_DRM_PANEL_LG_LB035Q02) += panel-lg-lb035q02.o
obj-$(CONFIG_DRM_PANEL_LG_LG4573) += panel-lg-lg4573.o
obj-$(CONFIG_DRM_PANEL_LG_SW43408) += panel-lg-sw43408.o
+obj-$(CONFIG_DRM_PANEL_LXD_M9189A) += panel-lxd-m9189a.o
obj-$(CONFIG_DRM_PANEL_MAGNACHIP_D53E6EA8966) += panel-magnachip-d53e6ea8966.o
obj-$(CONFIG_DRM_PANEL_NEC_NL8048HL11) += panel-nec-nl8048hl11.o
obj-$(CONFIG_DRM_PANEL_NEWVISION_NV3051D) += panel-newvision-nv3051d.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..07bd88c488712
--- /dev/null
+++ b/drivers/gpu/drm/panel/panel-lxd-m9189a.c
@@ -0,0 +1,241 @@
+// 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 m9189_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 m9189_panel *to_m9189_panel(struct drm_panel *panel)
+{
+ return container_of(panel, struct m9189_panel, panel);
+}
+
+static void m9189_reset(struct m9189_panel *m9189)
+{
+ gpiod_set_value_cansleep(m9189->reset_gpio, 0);
+ msleep(20);
+ gpiod_set_value_cansleep(m9189->reset_gpio, 1);
+ msleep(30);
+ gpiod_set_value_cansleep(m9189->reset_gpio, 0);
+ msleep(55);
+}
+
+static int m9189_on(struct m9189_panel *m9189)
+{
+ struct mipi_dsi_multi_context ctx = { .dsi = m9189->dsi };
+
+ ctx.dsi->mode_flags |= MIPI_DSI_MODE_LPM;
+
+ /* Gamma 2.2 */
+ mipi_dsi_dcs_write_seq_multi(&ctx, EK79007AD3_GAMMA1, 0x48);
+ mipi_dsi_dcs_write_seq_multi(&ctx, EK79007AD3_GAMMA2, 0xB8);
+ mipi_dsi_dcs_write_seq_multi(&ctx, EK79007AD3_GAMMA3, 0x88);
+ mipi_dsi_dcs_write_seq_multi(&ctx, EK79007AD3_GAMMA4, 0x88);
+ mipi_dsi_dcs_write_seq_multi(&ctx, EK79007AD3_GAMMA5, 0x58);
+ mipi_dsi_dcs_write_seq_multi(&ctx, EK79007AD3_GAMMA6, 0xD2);
+ mipi_dsi_dcs_write_seq_multi(&ctx, EK79007AD3_GAMMA7, 0x88);
+ mipi_dsi_msleep(&ctx, 50);
+
+ /* 4 Lanes */
+ mipi_dsi_generic_write_multi(&ctx, (u8[]){ EK79007AD3_PANEL_CTRL3, 0x70 }, 2);
+
+ mipi_dsi_dcs_exit_sleep_mode_multi(&ctx);
+ mipi_dsi_msleep(&ctx, 120);
+
+ mipi_dsi_dcs_set_display_on_multi(&ctx);
+ mipi_dsi_msleep(&ctx, 120);
+
+ return ctx.accum_err;
+}
+
+static int m9189_disable(struct drm_panel *panel)
+{
+ struct m9189_panel *m9189 = to_m9189_panel(panel);
+ struct mipi_dsi_multi_context ctx = { .dsi = m9189->dsi };
+
+ ctx.dsi->mode_flags &= ~MIPI_DSI_MODE_LPM;
+
+ mipi_dsi_dcs_enter_sleep_mode_multi(&ctx);
+ mipi_dsi_msleep(&ctx, 120);
+
+ gpiod_set_value_cansleep(m9189->standby_gpio, 1);
+
+ return ctx.accum_err;
+}
+
+static int m9189_prepare(struct drm_panel *panel)
+{
+ struct m9189_panel *m9189 = to_m9189_panel(panel);
+ struct device *dev = &m9189->dsi->dev;
+ int ret;
+
+ ret = regulator_enable(m9189->supply);
+ if (ret < 0) {
+ dev_err(dev, "Failed to enable regulators: %d\n", ret);
+ return ret;
+ }
+
+ gpiod_set_value_cansleep(m9189->standby_gpio, 0);
+ msleep(20);
+ m9189_reset(m9189);
+
+ ret = m9189_on(m9189);
+ if (ret < 0) {
+ dev_err(dev, "Failed to initialize panel: %d\n", ret);
+ gpiod_set_value_cansleep(m9189->reset_gpio, 1);
+ regulator_disable(m9189->supply);
+ return ret;
+ }
+
+ return 0;
+}
+
+static int m9189_unprepare(struct drm_panel *panel)
+{
+ struct m9189_panel *m9189 = to_m9189_panel(panel);
+
+ gpiod_set_value_cansleep(m9189->standby_gpio, 1);
+ msleep(50);
+
+ gpiod_set_value_cansleep(m9189->reset_gpio, 1);
+ regulator_disable(m9189->supply);
+
+ return 0;
+}
+
+static const struct drm_display_mode m9189_mode = {
+ .clock = (1024 + 160 + 160 + 10) * (600 + 12 + 23 + 1) * 60 / 1000,
+ .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 + 12 + 23 + 1,
+ .width_mm = 154,
+ .height_mm = 86,
+};
+
+static int m9189_get_modes(struct drm_panel *panel,
+ struct drm_connector *connector)
+{
+ return drm_connector_helper_get_modes_fixed(connector, &m9189_mode);
+}
+
+static const struct drm_panel_funcs m9189_panel_funcs = {
+ .prepare = m9189_prepare,
+ .unprepare = m9189_unprepare,
+ .disable = m9189_disable,
+ .get_modes = m9189_get_modes,
+};
+
+static int lxd_m9189_probe(struct mipi_dsi_device *dsi)
+{
+ struct device *dev = &dsi->dev;
+ struct m9189_panel *m9189;
+ int ret;
+
+ m9189 = devm_kzalloc(dev, sizeof(*m9189), GFP_KERNEL);
+ if (!m9189)
+ return -ENOMEM;
+
+ m9189->supply = devm_regulator_get(dev, "vdd");
+ if (IS_ERR(m9189->supply))
+ return dev_err_probe(dev, ret, "Failed to get regulator\n");
+
+ m9189->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_LOW);
+ if (IS_ERR(m9189->reset_gpio))
+ return dev_err_probe(dev, PTR_ERR(m9189->reset_gpio),
+ "Failed to get reset-gpios\n");
+
+ m9189->standby_gpio = devm_gpiod_get(dev, "standby", GPIOD_OUT_LOW);
+ if (IS_ERR(m9189->standby_gpio))
+ return dev_err_probe(dev, PTR_ERR(m9189->standby_gpio),
+ "Failed to get standby-gpios\n");
+
+ m9189->dsi = dsi;
+ mipi_dsi_set_drvdata(dsi, m9189);
+
+ dsi->lanes = 4;
+ dsi->format = MIPI_DSI_FMT_RGB888;
+ dsi->mode_flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_VIDEO_BURST;
+
+ drm_panel_init(&m9189->panel, dev, &m9189_panel_funcs,
+ DRM_MODE_CONNECTOR_DSI);
+ m9189->panel.prepare_prev_first = true;
+
+ ret = drm_panel_of_backlight(&m9189->panel);
+ if (ret)
+ return dev_err_probe(dev, ret, "Failed to get backlight\n");
+
+ drm_panel_add(&m9189->panel);
+
+ ret = mipi_dsi_attach(dsi);
+ if (ret < 0) {
+ dev_err_probe(dev, ret, "Failed to attach to DSI host\n");
+ drm_panel_remove(&m9189->panel);
+ return ret;
+ }
+
+ return 0;
+}
+
+static void lxd_m9189_remove(struct mipi_dsi_device *dsi)
+{
+ struct m9189_panel *m9189 = 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(&m9189->panel);
+}
+
+static const struct of_device_id lxd_m9189_of_match[] = {
+ { .compatible = "lxd,m9189a" },
+ { /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(of, lxd_m9189_of_match);
+
+static struct mipi_dsi_driver lxd_m9189_driver = {
+ .probe = lxd_m9189_probe,
+ .remove = lxd_m9189_remove,
+ .driver = {
+ .name = "panel-lxa-m9189a",
+ .of_match_table = lxd_m9189_of_match,
+ },
+};
+module_mipi_dsi_driver(lxd_m9189_driver);
+
+MODULE_DESCRIPTION("DRM driver for LXD M9189A MIPI-DSI panels");
+MODULE_LICENSE("GPL");
--
2.39.5
