Some Poco F1 phones have an LCD panel from Tianma, model nt36672a,
with a resolution of 1080x2246 that operates in DSI video mode.
Add the drm panel driver for it.
During testing, Benni Steini <bennistei...@gmail.com> helped us fix
the reset sequence timing (from 10ms to 20ms), to get the bootanimation
to work on Android.
With current AOSP, we need to increase it to 200ms - this seems to be a safe
high value to avoid a white screen occassionally.
Signed-off-by: Sumit Semwal <sumit.sem...@linaro.org>
Cc: Benni Steini <bennistei...@gmail.com>
Change-Id: Ib822ef12464abcb50d2e539d11b8983be87c31f2
---
v2: increase reset sequence timing to a safe 200ms
---
MAINTAINERS | 7 +
drivers/gpu/drm/panel/Kconfig | 11 +
drivers/gpu/drm/panel/Makefile | 1 +
drivers/gpu/drm/panel/panel-tianma-nt36672a.c | 859 ++++++++++++++++++
4 files changed, 878 insertions(+)
create mode 100644 drivers/gpu/drm/panel/panel-tianma-nt36672a.c
diff --git a/MAINTAINERS b/MAINTAINERS
index b4a43a9e7fbc..2d384e51353b 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -5544,6 +5544,13 @@ T: git git://anongit.freedesktop.org/drm/drm-misc
F: Documentation/devicetree/bindings/display/ste,mcde.txt
F: drivers/gpu/drm/mcde/
+DRM DRIVER FOR TIANMA NT36672A PANELS
+M: Sumit Semwal <sumit.sem...@linaro.org>
+S: Maintained
+T: git git://anongit.freedesktop.org/drm/drm-misc
+F:
Documentation/devicetree/bindings/display/panel/tianma,nt36672a-panel.yaml
+F: drivers/gpu/drm/panel/panel-tianma-nt36672a.c
+
DRM DRIVER FOR TDFX VIDEO CARDS
S: Orphan / Obsolete
F: drivers/gpu/drm/tdfx/
diff --git a/drivers/gpu/drm/panel/Kconfig b/drivers/gpu/drm/panel/Kconfig
index 39055c1f0e2f..da9d74c1ec91 100644
--- a/drivers/gpu/drm/panel/Kconfig
+++ b/drivers/gpu/drm/panel/Kconfig
@@ -437,6 +437,17 @@ config DRM_PANEL_TPO_TD043MTEA1
Say Y here if you want to enable support for TPO TD043MTEA1 800x480
4.3" panel (found on the OMAP3 Pandora board).
+config DRM_PANEL_TIANMA_FHD_NT36672A
+ tristate "TIANMA NT36672A panel"
+ 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 Tianma NT36672A
+ panel. It is seen mostly in Xiaomi Poco F1 mobile phone.
+ The panel has a 1080x2246 resolution and uses 24 bit RGB per pixel.
+ It provides a MIPI DSI interface to the host.
+
config DRM_PANEL_TPO_TPG110
tristate "TPO TPG 800x400 panel"
depends on OF && SPI && GPIOLIB
diff --git a/drivers/gpu/drm/panel/Makefile b/drivers/gpu/drm/panel/Makefile
index de74f282c433..303e44eb50fa 100644
--- a/drivers/gpu/drm/panel/Makefile
+++ b/drivers/gpu/drm/panel/Makefile
@@ -44,6 +44,7 @@ obj-$(CONFIG_DRM_PANEL_SITRONIX_ST7701) +=
panel-sitronix-st7701.o
obj-$(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
+obj-$(CONFIG_DRM_PANEL_TIANMA_FHD_NT36672A) += panel-tianma-nt36672a.o
obj-$(CONFIG_DRM_PANEL_TPO_TD028TTEC1) += panel-tpo-td028ttec1.o
obj-$(CONFIG_DRM_PANEL_TPO_TD043MTEA1) += panel-tpo-td043mtea1.o
obj-$(CONFIG_DRM_PANEL_TPO_TPG110) += panel-tpo-tpg110.o
diff --git a/drivers/gpu/drm/panel/panel-tianma-nt36672a.c
b/drivers/gpu/drm/panel/panel-tianma-nt36672a.c
new file mode 100644
index 000000000000..0af3a6ff5d55
--- /dev/null
+++ b/drivers/gpu/drm/panel/panel-tianma-nt36672a.c
@@ -0,0 +1,859 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2020 Linaro Ltd
+ * Author: Sumit Semwal <sumit.sem...@linaro.org>
+ */
+
+#include <linux/delay.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/of_device.h>
+
+#include <linux/gpio/consumer.h>
+#include <linux/pinctrl/consumer.h>
+#include <linux/regulator/consumer.h>
+
+#include <drm/drm_device.h>
+#include <drm/drm_mipi_dsi.h>
+#include <drm/drm_modes.h>
+#include <drm/drm_panel.h>
+#include <drm/drm_print.h>
+
+#include <video/mipi_display.h>
+
+struct panel_cmd {
+ size_t len;
+ const char *data;
+};
+
+#define _INIT_CMD(...) { \
+ .len = sizeof((char[]){__VA_ARGS__}), \
+ .data = (char[]){__VA_ARGS__} }
+
+static const char * const regulator_names[] = {
+ "vddio",
+ "vddpos",
+ "vddneg",
+};
+
+static unsigned long const regulator_enable_loads[] = {
+ 62000,
+ 100000,
+ 100000
+};
+
+static unsigned long const regulator_disable_loads[] = {
+ 80,
+ 100,
+ 100
+};
+
+struct panel_desc {
+ const struct drm_display_mode *display_mode;
+ const char *panel_name;
+
+ unsigned int width_mm;
+ unsigned int height_mm;
+
+ unsigned long mode_flags;
+ enum mipi_dsi_pixel_format format;
+ unsigned int lanes;
+
+ const struct panel_cmd *on_cmds_1;
+ const struct panel_cmd *on_cmds_2;
+
+ const struct panel_cmd *off_cmds;
+};
+
+struct panel_info {
+ struct drm_panel base;
+ struct mipi_dsi_device *link;
+ const struct panel_desc *desc;
+
+ struct regulator_bulk_data supplies[ARRAY_SIZE(regulator_names)];
+
+ struct gpio_desc *reset_gpio;
+
+ struct pinctrl *pinctrl;
+ struct pinctrl_state *active;
+ struct pinctrl_state *suspend;
+
+
+ bool prepared;
+ bool enabled;
+};
+
+static inline struct panel_info *to_panel_info(struct drm_panel *panel)
+{
+ return container_of(panel, struct panel_info, base);
+}
+
+static int send_mipi_cmds(struct drm_panel *panel, const struct panel_cmd
*cmds)
+{
+ struct panel_info *pinfo = to_panel_info(panel);
+ unsigned int i = 0;
+ int err;
+
+ if (!cmds)
+ return -EFAULT;
+
+ for (i = 0; cmds[i].len != 0; i++) {
+ const struct panel_cmd *cmd = &cmds[i];
+
+ if (cmd->len == 2)
+ err = mipi_dsi_dcs_write(pinfo->link,
+ cmd->data[1], NULL, 0);
+ else
+ err = mipi_dsi_dcs_write(pinfo->link,
+ cmd->data[1], cmd->data + 2,
+ cmd->len - 2);
+
+ if (err < 0)
+ return err;
+
+ }
+
+ return 0;
+}
+
+static int panel_set_pinctrl_state(struct panel_info *panel, bool enable)
+{
+ int rc = 0;
+ struct pinctrl_state *state;
+
+ if (enable)
+ state = panel->active;
+ else
+ state = panel->suspend;
+
+ rc = pinctrl_select_state(panel->pinctrl, state);
+ if (rc)
+ pr_err("[%s] failed to set pin state, rc=%d\n",
panel->desc->panel_name,
+ rc);
+ return rc;
+}
+
+static int tianma_panel_disable(struct drm_panel *panel)
+{
+ struct panel_info *pinfo = to_panel_info(panel);
+
+ pinfo->enabled = false;
+
+ return 0;
+}
+
+static int tianma_panel_power_off(struct drm_panel *panel)
+{
+ struct panel_info *pinfo = to_panel_info(panel);
+ int i, ret = 0;
+
+ gpiod_set_value(pinfo->reset_gpio, 0);
+
+ ret = panel_set_pinctrl_state(pinfo, false);
+ if (ret) {
+ pr_err("[%s] failed to set pinctrl, rc=%d\n",
pinfo->desc->panel_name, ret);
+ return ret;
+ }
+
+ for (i = 0; i < ARRAY_SIZE(pinfo->supplies); i++) {
+ ret = regulator_set_load(pinfo->supplies[i].consumer,
+ regulator_disable_loads[i]);
+ if (ret) {
+ DRM_DEV_ERROR(panel->dev,
+ "regulator_set_load failed %d\n", ret);
+ return ret;
+ }
+ }
+
+ ret = regulator_bulk_disable(ARRAY_SIZE(pinfo->supplies),
pinfo->supplies);
+ if (ret) {
+ DRM_DEV_ERROR(panel->dev,
+ "regulator_bulk_disable failed %d\n", ret);
+ }
+ return ret;
+}
+
+static int tianma_panel_unprepare(struct drm_panel *panel)
+{
+ struct panel_info *pinfo = to_panel_info(panel);
+ int ret;
+
+ if (!pinfo->prepared)
+ return 0;
+
+ /* send off cmds */
+ ret = send_mipi_cmds(panel, pinfo->desc->off_cmds);
+
+ if (ret < 0) {
+ DRM_DEV_ERROR(panel->dev,
+ "failed to send DCS off cmds: %d\n", ret);
+ }
+
+ ret = mipi_dsi_dcs_set_display_off(pinfo->link);
+ if (ret < 0) {
+ DRM_DEV_ERROR(panel->dev,
+ "set_display_off cmd failed ret = %d\n",
+ ret);
+ }
+
+ /* 120ms delay required here as per DCS spec */
+ msleep(120);
+
+ ret = mipi_dsi_dcs_enter_sleep_mode(pinfo->link);
+ if (ret < 0) {
+ DRM_DEV_ERROR(panel->dev,
+ "enter_sleep cmd failed ret = %d\n", ret);
+ }
+ /* 0x3C = 60ms delay */
+ msleep(60);
+
+ ret = tianma_panel_power_off(panel);
+ if (ret < 0)
+ DRM_DEV_ERROR(panel->dev, "power_off failed ret = %d\n", ret);
+
+ pinfo->prepared = false;
+
+ return ret;
+
+}
+
+static int tianma_panel_power_on(struct panel_info *pinfo)
+{
+ int ret, i;
+
+ for (i = 0; i < ARRAY_SIZE(pinfo->supplies); i++) {
+ ret = regulator_set_load(pinfo->supplies[i].consumer,
+ regulator_enable_loads[i]);
+ if (ret)
+ return ret;
+ }
+
+ ret = regulator_bulk_enable(ARRAY_SIZE(pinfo->supplies),
pinfo->supplies);
+ if (ret < 0)
+ return ret;
+
+ ret = panel_set_pinctrl_state(pinfo, true);
+ if (ret) {
+ pr_err("[%s] failed to set pinctrl, rc=%d\n",
pinfo->desc->panel_name, ret);
+ return ret;
+ }
+
+ /*
+ * As per downstream kernel, Reset sequence of Tianma nt36672a panel
requires the panel to be
+ * out of reset for 10ms, followed by being held in reset for 10ms. But
for Android / AOSP,
+ * we needed to bump it upto 200ms otherwise we get white screen
sometimes.
+ * FIXME: Try to reduce this 200ms to a lesser value.
+ */
+ gpiod_set_value(pinfo->reset_gpio, 0);
+ msleep(200);
+ gpiod_set_value(pinfo->reset_gpio, 1);
+ msleep(200);
+
+ return 0;
+}
+
+static int tianma_panel_prepare(struct drm_panel *panel)
+{
+ struct panel_info *pinfo = to_panel_info(panel);
+ int err;
+
+ if (pinfo->prepared)
+ return 0;
+
+ err = tianma_panel_power_on(pinfo);
+ if (err < 0)
+ goto poweroff;
+
+ /* send first part of init cmds */
+ err = send_mipi_cmds(panel, pinfo->desc->on_cmds_1);
+
+ if (err < 0) {
+ DRM_DEV_ERROR(panel->dev,
+ "failed to send DCS Init 1st Code: %d\n", err);
+ goto poweroff;
+ }
+
+ err = mipi_dsi_dcs_set_display_on(pinfo->link);
+ if (err < 0) {
+ DRM_DEV_ERROR(panel->dev,
+ "failed to Set Display ON: %d\n", err);
+ goto poweroff;
+ }
+
+ err = mipi_dsi_dcs_exit_sleep_mode(pinfo->link);
+ if (err < 0) {
+ DRM_DEV_ERROR(panel->dev, "failed to exit sleep mode: %d\n",
+ err);
+ goto poweroff;
+ }
+ /* 0x46 = 70 ms delay */
+ msleep(70);
+
+ /* Send rest of the init cmds */
+ err = send_mipi_cmds(panel, pinfo->desc->on_cmds_2);
+
+ if (err < 0) {
+ DRM_DEV_ERROR(panel->dev,
+ "failed to send DCS Init 2nd Code: %d\n", err);
+ goto poweroff;
+ }
+
+ msleep(120);
+
+ pinfo->prepared = true;
+
+ return 0;
+
+poweroff:
+ gpiod_set_value(pinfo->reset_gpio, 1);
+ return err;
+}
+
+
+static int tianma_panel_enable(struct drm_panel *panel)
+{
+ struct panel_info *pinfo = to_panel_info(panel);
+
+ if (pinfo->enabled)
+ return 0;
+
+ pinfo->enabled = true;
+
+ return 0;
+}
+
+static int tianma_panel_get_modes(struct drm_panel *panel,
+ struct drm_connector *connector)
+{
+ struct panel_info *pinfo = to_panel_info(panel);
+ const struct drm_display_mode *m = pinfo->desc->display_mode;
+ struct drm_display_mode *mode;
+
+ mode = drm_mode_duplicate(connector->dev, m);
+ if (!mode) {
+ DRM_DEV_ERROR(panel->dev, "failed to add mode %ux%u@%u\n",
+ m->hdisplay, m->vdisplay, m->vrefresh);
+ return -ENOMEM;
+ }
+
+ connector->display_info.width_mm = pinfo->desc->width_mm;
+ connector->display_info.height_mm = pinfo->desc->height_mm;
+
+ drm_mode_set_name(mode);
+ drm_mode_probed_add(connector, mode);
+
+ return 1;
+}
+
+static const struct drm_panel_funcs panel_funcs = {
+ .disable = tianma_panel_disable,
+ .unprepare = tianma_panel_unprepare,
+ .prepare = tianma_panel_prepare,
+ .enable = tianma_panel_enable,
+ .get_modes = tianma_panel_get_modes,
+};
+
+static const struct panel_cmd tianma_nt36672a_on_cmds_1[] = {
+ /* skin enhancement mode */
+ _INIT_CMD(0x00, 0xFF, 0x22),
+ _INIT_CMD(0x00, 0x00, 0x40),
+ _INIT_CMD(0x00, 0x01, 0xC0),
+ _INIT_CMD(0x00, 0x02, 0x40),
+ _INIT_CMD(0x00, 0x03, 0x40),
+ _INIT_CMD(0x00, 0x04, 0x40),
+ _INIT_CMD(0x00, 0x05, 0x40),
+ _INIT_CMD(0x00, 0x06, 0x40),
+ _INIT_CMD(0x00, 0x07, 0x40),
+ _INIT_CMD(0x00, 0x08, 0x40),
+ _INIT_CMD(0x00, 0x09, 0x40),
+ _INIT_CMD(0x00, 0x0A, 0x40),
+ _INIT_CMD(0x00, 0x0B, 0x40),
+ _INIT_CMD(0x00, 0x0C, 0x40),
+ _INIT_CMD(0x00, 0x0D, 0x40),
+ _INIT_CMD(0x00, 0x0E, 0x40),
+ _INIT_CMD(0x00, 0x0F, 0x40),
+ _INIT_CMD(0x00, 0x10, 0x40),
+ _INIT_CMD(0x00, 0x11, 0x50),
+ _INIT_CMD(0x00, 0x12, 0x60),
+ _INIT_CMD(0x00, 0x13, 0x70),
+ _INIT_CMD(0x00, 0x14, 0x58),
+ _INIT_CMD(0x00, 0x15, 0x68),
+ _INIT_CMD(0x00, 0x16, 0x78),
+ _INIT_CMD(0x00, 0x17, 0x77),
+ _INIT_CMD(0x00, 0x18, 0x39),
+ _INIT_CMD(0x00, 0x19, 0x2D),
+ _INIT_CMD(0x00, 0x1A, 0x2E),
+ _INIT_CMD(0x00, 0x1B, 0x32),
+ _INIT_CMD(0x00, 0x1C, 0x37),
+ _INIT_CMD(0x00, 0x1D, 0x3A),
+ _INIT_CMD(0x00, 0x1E, 0x40),
+ _INIT_CMD(0x00, 0x1F, 0x40),
+ _INIT_CMD(0x00, 0x20, 0x40),
+ _INIT_CMD(0x00, 0x21, 0x40),
+ _INIT_CMD(0x00, 0x22, 0x40),
+ _INIT_CMD(0x00, 0x23, 0x40),
+ _INIT_CMD(0x00, 0x24, 0x40),
+ _INIT_CMD(0x00, 0x25, 0x40),
+ _INIT_CMD(0x00, 0x26, 0x40),
+ _INIT_CMD(0x00, 0x27, 0x40),
+ _INIT_CMD(0x00, 0x28, 0x40),
+ _INIT_CMD(0x00, 0x2D, 0x00),
+ _INIT_CMD(0x00, 0x2F, 0x40),
+ _INIT_CMD(0x00, 0x30, 0x40),
+ _INIT_CMD(0x00, 0x31, 0x40),
+ _INIT_CMD(0x00, 0x32, 0x40),
+ _INIT_CMD(0x00, 0x33, 0x40),
+ _INIT_CMD(0x00, 0x34, 0x40),
+ _INIT_CMD(0x00, 0x35, 0x40),
+ _INIT_CMD(0x00, 0x36, 0x40),
+ _INIT_CMD(0x00, 0x37, 0x40),
+ _INIT_CMD(0x00, 0x38, 0x40),
+ _INIT_CMD(0x00, 0x39, 0x40),
+ _INIT_CMD(0x00, 0x3A, 0x40),
+ _INIT_CMD(0x00, 0x3B, 0x40),
+ _INIT_CMD(0x00, 0x3D, 0x40),
+ _INIT_CMD(0x00, 0x3F, 0x40),
+ _INIT_CMD(0x00, 0x40, 0x40),
+ _INIT_CMD(0x00, 0x41, 0x40),
+ _INIT_CMD(0x00, 0x42, 0x40),
+ _INIT_CMD(0x00, 0x43, 0x40),
+ _INIT_CMD(0x00, 0x44, 0x40),
+ _INIT_CMD(0x00, 0x45, 0x40),
+ _INIT_CMD(0x00, 0x46, 0x40),
+ _INIT_CMD(0x00, 0x47, 0x40),
+ _INIT_CMD(0x00, 0x48, 0x40),
+ _INIT_CMD(0x00, 0x49, 0x40),
+ _INIT_CMD(0x00, 0x4A, 0x40),
+ _INIT_CMD(0x00, 0x4B, 0x40),
+ _INIT_CMD(0x00, 0x4C, 0x40),
+ _INIT_CMD(0x00, 0x4D, 0x40),
+ _INIT_CMD(0x00, 0x4E, 0x40),
+ _INIT_CMD(0x00, 0x4F, 0x40),
+ _INIT_CMD(0x00, 0x50, 0x40),
+ _INIT_CMD(0x00, 0x51, 0x40),
+ _INIT_CMD(0x00, 0x52, 0x40),
+ _INIT_CMD(0x00, 0x53, 0x01),
+ _INIT_CMD(0x00, 0x54, 0x01),
+ _INIT_CMD(0x00, 0x55, 0xFE),
+ _INIT_CMD(0x00, 0x56, 0x77),
+ _INIT_CMD(0x00, 0x58, 0xCD),
+ _INIT_CMD(0x00, 0x59, 0xD0),
+ _INIT_CMD(0x00, 0x5A, 0xD0),
+ _INIT_CMD(0x00, 0x5B, 0x50),
+ _INIT_CMD(0x00, 0x5C, 0x50),
+ _INIT_CMD(0x00, 0x5D, 0x50),
+ _INIT_CMD(0x00, 0x5E, 0x50),
+ _INIT_CMD(0x00, 0x5F, 0x50),
+ _INIT_CMD(0x00, 0x60, 0x50),
+ _INIT_CMD(0x00, 0x61, 0x50),
+ _INIT_CMD(0x00, 0x62, 0x50),
+ _INIT_CMD(0x00, 0x63, 0x50),
+ _INIT_CMD(0x00, 0x64, 0x50),
+ _INIT_CMD(0x00, 0x65, 0x50),
+ _INIT_CMD(0x00, 0x66, 0x50),
+ _INIT_CMD(0x00, 0x67, 0x50),
+ _INIT_CMD(0x00, 0x68, 0x50),
+ _INIT_CMD(0x00, 0x69, 0x50),
+ _INIT_CMD(0x00, 0x6A, 0x50),
+ _INIT_CMD(0x00, 0x6B, 0x50),
+ _INIT_CMD(0x00, 0x6C, 0x50),
+ _INIT_CMD(0x00, 0x6D, 0x50),
+ _INIT_CMD(0x00, 0x6E, 0x50),
+ _INIT_CMD(0x00, 0x6F, 0x50),
+ _INIT_CMD(0x00, 0x70, 0x07),
+ _INIT_CMD(0x00, 0x71, 0x00),
+ _INIT_CMD(0x00, 0x72, 0x00),
+ _INIT_CMD(0x00, 0x73, 0x00),
+ _INIT_CMD(0x00, 0x74, 0x06),
+ _INIT_CMD(0x00, 0x75, 0x0C),
+ _INIT_CMD(0x00, 0x76, 0x03),
+ _INIT_CMD(0x00, 0x77, 0x09),
+ _INIT_CMD(0x00, 0x78, 0x0F),
+ _INIT_CMD(0x00, 0x79, 0x68),
+ _INIT_CMD(0x00, 0x7A, 0x88),
+ _INIT_CMD(0x00, 0x7C, 0x80),
+ _INIT_CMD(0x00, 0x7D, 0x80),
+ _INIT_CMD(0x00, 0x7E, 0x80),
+ _INIT_CMD(0x00, 0x7F, 0x00),
+ _INIT_CMD(0x00, 0x80, 0x00),
+ _INIT_CMD(0x00, 0x81, 0x00),
+ _INIT_CMD(0x00, 0x83, 0x01),
+ _INIT_CMD(0x00, 0x84, 0x00),
+ _INIT_CMD(0x00, 0x85, 0x80),
+ _INIT_CMD(0x00, 0x86, 0x80),
+ _INIT_CMD(0x00, 0x87, 0x80),
+ _INIT_CMD(0x00, 0x88, 0x40),
+ _INIT_CMD(0x00, 0x89, 0x91),
+ _INIT_CMD(0x00, 0x8A, 0x98),
+ _INIT_CMD(0x00, 0x8B, 0x80),
+ _INIT_CMD(0x00, 0x8C, 0x80),
+ _INIT_CMD(0x00, 0x8D, 0x80),
+ _INIT_CMD(0x00, 0x8E, 0x80),
+ _INIT_CMD(0x00, 0x8F, 0x80),
+ _INIT_CMD(0x00, 0x90, 0x80),
+ _INIT_CMD(0x00, 0x91, 0x80),
+ _INIT_CMD(0x00, 0x92, 0x80),
+ _INIT_CMD(0x00, 0x93, 0x80),
+ _INIT_CMD(0x00, 0x94, 0x80),
+ _INIT_CMD(0x00, 0x95, 0x80),
+ _INIT_CMD(0x00, 0x96, 0x80),
+ _INIT_CMD(0x00, 0x97, 0x80),
+ _INIT_CMD(0x00, 0x98, 0x80),
+ _INIT_CMD(0x00, 0x99, 0x80),
+ _INIT_CMD(0x00, 0x9A, 0x80),
+ _INIT_CMD(0x00, 0x9B, 0x80),
+ _INIT_CMD(0x00, 0x9C, 0x80),
+ _INIT_CMD(0x00, 0x9D, 0x80),
+ _INIT_CMD(0x00, 0x9E, 0x80),
+ _INIT_CMD(0x00, 0x9F, 0x80),
+ _INIT_CMD(0x00, 0xA0, 0x8A),
+ _INIT_CMD(0x00, 0xA2, 0x80),
+ _INIT_CMD(0x00, 0xA6, 0x80),
+ _INIT_CMD(0x00, 0xA7, 0x80),
+ _INIT_CMD(0x00, 0xA9, 0x80),
+ _INIT_CMD(0x00, 0xAA, 0x80),
+ _INIT_CMD(0x00, 0xAB, 0x80),
+ _INIT_CMD(0x00, 0xAC, 0x80),
+ _INIT_CMD(0x00, 0xAD, 0x80),
+ _INIT_CMD(0x00, 0xAE, 0x80),
+ _INIT_CMD(0x00, 0xAF, 0x80),
+ _INIT_CMD(0x00, 0xB7, 0x76),
+ _INIT_CMD(0x00, 0xB8, 0x76),
+ _INIT_CMD(0x00, 0xB9, 0x05),
+ _INIT_CMD(0x00, 0xBA, 0x0D),
+ _INIT_CMD(0x00, 0xBB, 0x14),
+ _INIT_CMD(0x00, 0xBC, 0x0F),
+ _INIT_CMD(0x00, 0xBD, 0x18),
+ _INIT_CMD(0x00, 0xBE, 0x1F),
+ _INIT_CMD(0x00, 0xBF, 0x05),
+ _INIT_CMD(0x00, 0xC0, 0x0D),
+ _INIT_CMD(0x00, 0xC1, 0x14),
+ _INIT_CMD(0x00, 0xC2, 0x03),
+ _INIT_CMD(0x00, 0xC3, 0x07),
+ _INIT_CMD(0x00, 0xC4, 0x0A),
+ _INIT_CMD(0x00, 0xC5, 0xA0),
+ _INIT_CMD(0x00, 0xC6, 0x55),
+ _INIT_CMD(0x00, 0xC7, 0xFF),
+ _INIT_CMD(0x00, 0xC8, 0x39),
+ _INIT_CMD(0x00, 0xC9, 0x44),
+ _INIT_CMD(0x00, 0xCA, 0x12),
+ _INIT_CMD(0x00, 0xCD, 0x80),
+ _INIT_CMD(0x00, 0xDB, 0x80),
+ _INIT_CMD(0x00, 0xDC, 0x80),
+ _INIT_CMD(0x00, 0xDD, 0x80),
+ _INIT_CMD(0x00, 0xE0, 0x80),
+ _INIT_CMD(0x00, 0xE1, 0x80),
+ _INIT_CMD(0x00, 0xE2, 0x80),
+ _INIT_CMD(0x00, 0xE3, 0x80),
+ _INIT_CMD(0x00, 0xE4, 0x80),
+ _INIT_CMD(0x00, 0xE5, 0x40),
+ _INIT_CMD(0x00, 0xE6, 0x40),
+ _INIT_CMD(0x00, 0xE7, 0x40),
+ _INIT_CMD(0x00, 0xE8, 0x40),
+ _INIT_CMD(0x00, 0xE9, 0x40),
+ _INIT_CMD(0x00, 0xEA, 0x40),
+ _INIT_CMD(0x00, 0xEB, 0x40),
+ _INIT_CMD(0x00, 0xEC, 0x40),
+ _INIT_CMD(0x00, 0xED, 0x40),
+ _INIT_CMD(0x00, 0xEE, 0x40),
+ _INIT_CMD(0x00, 0xEF, 0x40),
+ _INIT_CMD(0x00, 0xF0, 0x40),
+ _INIT_CMD(0x00, 0xF1, 0x40),
+ _INIT_CMD(0x00, 0xF2, 0x40),
+ _INIT_CMD(0x00, 0xF3, 0x40),
+ _INIT_CMD(0x00, 0xF4, 0x40),
+ _INIT_CMD(0x00, 0xF5, 0x40),
+ _INIT_CMD(0x00, 0xF6, 0x40),
+ _INIT_CMD(0x00, 0xFB, 0x1),
+ _INIT_CMD(0x00, 0xFF, 0x23),
+ _INIT_CMD(0x00, 0xFB, 0x01),
+ /* dimming enable */
+ _INIT_CMD(0x00, 0x01, 0x84),
+ _INIT_CMD(0x00, 0x05, 0x2D),
+ _INIT_CMD(0x00, 0x06, 0x00),
+ /* resolution 1080*2246 */
+ _INIT_CMD(0x00, 0x11, 0x01),
+ _INIT_CMD(0x00, 0x12, 0x7B),
+ _INIT_CMD(0x00, 0x15, 0x6F),
+ _INIT_CMD(0x00, 0x16, 0x0B),
+ /* UI mode */
+ _INIT_CMD(0x00, 0x29, 0x0A),
+ _INIT_CMD(0x00, 0x30, 0xFF),
+ _INIT_CMD(0x00, 0x31, 0xFF),
+ _INIT_CMD(0x00, 0x32, 0xFF),
+ _INIT_CMD(0x00, 0x33, 0xFF),
+ _INIT_CMD(0x00, 0x34, 0xFF),
+ _INIT_CMD(0x00, 0x35, 0xFF),
+ _INIT_CMD(0x00, 0x36, 0xFF),
+ _INIT_CMD(0x00, 0x37, 0xFF),
+ _INIT_CMD(0x00, 0x38, 0xFC),
+ _INIT_CMD(0x00, 0x39, 0xF8),
+ _INIT_CMD(0x00, 0x3A, 0xF4),
+ _INIT_CMD(0x00, 0x3B, 0xF1),
+ _INIT_CMD(0x00, 0x3D, 0xEE),
+ _INIT_CMD(0x00, 0x3F, 0xEB),
+ _INIT_CMD(0x00, 0x40, 0xE8),
+ _INIT_CMD(0x00, 0x41, 0xE5),
+ /* STILL mode */
+ _INIT_CMD(0x00, 0x2A, 0x13),
+ _INIT_CMD(0x00, 0x45, 0xFF),
+ _INIT_CMD(0x00, 0x46, 0xFF),
+ _INIT_CMD(0x00, 0x47, 0xFF),
+ _INIT_CMD(0x00, 0x48, 0xFF),
+ _INIT_CMD(0x00, 0x49, 0xFF),
+ _INIT_CMD(0x00, 0x4A, 0xFF),
+ _INIT_CMD(0x00, 0x4B, 0xFF),
+ _INIT_CMD(0x00, 0x4C, 0xFF),
+ _INIT_CMD(0x00, 0x4D, 0xED),
+ _INIT_CMD(0x00, 0x4E, 0xD5),
+ _INIT_CMD(0x00, 0x4F, 0xBF),
+ _INIT_CMD(0x00, 0x50, 0xA6),
+ _INIT_CMD(0x00, 0x51, 0x96),
+ _INIT_CMD(0x00, 0x52, 0x86),
+ _INIT_CMD(0x00, 0x53, 0x76),
+ _INIT_CMD(0x00, 0x54, 0x66),
+ /* MOVING mode */
+ _INIT_CMD(0x00, 0x2B, 0x0E),
+ _INIT_CMD(0x00, 0x58, 0xFF),
+ _INIT_CMD(0x00, 0x59, 0xFF),
+ _INIT_CMD(0x00, 0x5A, 0xFF),
+ _INIT_CMD(0x00, 0x5B, 0xFF),
+ _INIT_CMD(0x00, 0x5C, 0xFF),
+ _INIT_CMD(0x00, 0x5D, 0xFF),
+ _INIT_CMD(0x00, 0x5E, 0xFF),
+ _INIT_CMD(0x00, 0x5F, 0xFF),
+ _INIT_CMD(0x00, 0x60, 0xF6),
+ _INIT_CMD(0x00, 0x61, 0xEA),
+ _INIT_CMD(0x00, 0x62, 0xE1),
+ _INIT_CMD(0x00, 0x63, 0xD8),
+ _INIT_CMD(0x00, 0x64, 0xCE),
+ _INIT_CMD(0x00, 0x65, 0xC3),
+ _INIT_CMD(0x00, 0x66, 0xBA),
+ _INIT_CMD(0x00, 0x67, 0xB3),
+ _INIT_CMD(0x00, 0xFF, 0x25),
+ _INIT_CMD(0x00, 0xFB, 0x01),
+ _INIT_CMD(0x00, 0x05, 0x04),
+ _INIT_CMD(0x00, 0xFF, 0x26),
+ _INIT_CMD(0x00, 0xFB, 0x01),
+ _INIT_CMD(0x00, 0x1C, 0xAF),
+ _INIT_CMD(0x00, 0xFF, 0x10),
+ _INIT_CMD(0x00, 0xFB, 0x01),
+ _INIT_CMD(0x00, 0x51, 0xFF),
+ _INIT_CMD(0x00, 0x53, 0x24),
+ _INIT_CMD(0x00, 0x55, 0x00),
+
+ {},
+};
+
+static const struct panel_cmd tianma_nt36672a_on_cmds_2[] = {
+ _INIT_CMD(0x00, 0xFF, 0x24),
+ _INIT_CMD(0x00, 0xFB, 0x01),
+ _INIT_CMD(0x00, 0xC3, 0x01),
+ _INIT_CMD(0x00, 0xC4, 0x54),
+ _INIT_CMD(0x00, 0xFF, 0x10),
+
+ {},
+};
+
+static const struct panel_cmd tianma_nt36672a_off_cmds[] = {
+ _INIT_CMD(0x00, 0xFF, 0x24),
+ _INIT_CMD(0x00, 0xFB, 0x01),
+ _INIT_CMD(0x00, 0xC3, 0x01),
+ _INIT_CMD(0x00, 0xFF, 0x10),
+
+ {},
+};
+
+static const struct drm_display_mode tianma_panel_default_mode = {
+ .clock = 161331,
+
+ .hdisplay = 1080,
+ .hsync_start = 1080 + 40,
+ .hsync_end = 1080 + 40 + 20,
+ .htotal = 1080 + 40 + 20 + 44,
+
+ .vdisplay = 2246,
+ .vsync_start = 2246 + 15,
+ .vsync_end = 2246 + 15 + 2,
+ .vtotal = 2246 + 15 + 2 + 8,
+ .vrefresh = 60,
+
+ .type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED,
+};
+
+static const struct panel_desc tianma_panel_desc = {
+ .display_mode = &tianma_panel_default_mode,
+
+ .width_mm = 68,
+ .height_mm = 136,
+
+ .mode_flags = MIPI_DSI_MODE_LPM | MIPI_DSI_MODE_VIDEO
+ | MIPI_DSI_MODE_VIDEO_HSE
+ | MIPI_DSI_CLOCK_NON_CONTINUOUS
+ | MIPI_DSI_MODE_VIDEO_BURST,
+ .format = MIPI_DSI_FMT_RGB888,
+ .lanes = 4,
+ .on_cmds_1 = tianma_nt36672a_on_cmds_1,
+ .on_cmds_2 = tianma_nt36672a_on_cmds_2,
+ .off_cmds = tianma_nt36672a_off_cmds
+};
+
+
+static const struct of_device_id panel_of_match[] = {
+ { .compatible = "tianma,nt36672a",
+ .data = &tianma_panel_desc
+ },
+ {
+ /* sentinel */
+ }
+};
+MODULE_DEVICE_TABLE(of, panel_of_match);
+
+
+static int panel_pinctrl_init(struct panel_info *panel)
+{
+ struct device *dev = &panel->link->dev;
+ int rc = 0;
+
+ panel->pinctrl = devm_pinctrl_get(dev);
+ if (IS_ERR_OR_NULL(panel->pinctrl)) {
+ rc = PTR_ERR(panel->pinctrl);
+ pr_err("failed to get pinctrl, rc=%d\n", rc);
+ goto error;
+ }
+
+ panel->active = pinctrl_lookup_state(panel->pinctrl,
+ "panel_active");
+ if (IS_ERR_OR_NULL(panel->active)) {
+ rc = PTR_ERR(panel->active);
+ pr_err("failed to get pinctrl active state, rc=%d\n", rc);
+ goto error;
+ }
+
+ panel->suspend =
+ pinctrl_lookup_state(panel->pinctrl, "panel_suspend");
+
+ if (IS_ERR_OR_NULL(panel->suspend)) {
+ rc = PTR_ERR(panel->suspend);
+ pr_err("failed to get pinctrl suspend state, rc=%d\n", rc);
+ goto error;
+ }
+
+error:
+ return rc;
+}
+
+static int panel_add(struct panel_info *pinfo)
+{
+ struct device *dev = &pinfo->link->dev;
+ int i, ret;
+
+ for (i = 0; i < ARRAY_SIZE(pinfo->supplies); i++)
+ pinfo->supplies[i].supply = regulator_names[i];
+
+ ret = devm_regulator_bulk_get(dev, ARRAY_SIZE(pinfo->supplies),
+ pinfo->supplies);
+ if (ret < 0)
+ return ret;
+
+ pinfo->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_HIGH);
+ if (IS_ERR(pinfo->reset_gpio)) {
+ DRM_DEV_ERROR(dev, "cannot get reset gpio %ld\n",
+ PTR_ERR(pinfo->reset_gpio));
+ return PTR_ERR(pinfo->reset_gpio);
+ }
+
+ ret = panel_pinctrl_init(pinfo);
+ if (ret < 0)
+ return ret;
+
+ drm_panel_init(&pinfo->base, dev, &panel_funcs,
+ DRM_MODE_CONNECTOR_DSI);
+
+ ret = drm_panel_add(&pinfo->base);
+ if (ret < 0)
+ return ret;
+ return 0;
+}
+
+static void panel_del(struct panel_info *pinfo)
+{
+ if (pinfo->base.dev)
+ drm_panel_remove(&pinfo->base);
+}
+
+static int panel_probe(struct mipi_dsi_device *dsi)
+{
+ struct panel_info *pinfo;
+ const struct panel_desc *desc;
+ int err;
+
+ pinfo = devm_kzalloc(&dsi->dev, sizeof(*pinfo), GFP_KERNEL);
+ if (!pinfo)
+ return -ENOMEM;
+
+ desc = of_device_get_match_data(&dsi->dev);
+ dsi->mode_flags = desc->mode_flags;
+ dsi->format = desc->format;
+ dsi->lanes = desc->lanes;
+ pinfo->desc = desc;
+ pinfo->link = dsi;
+
+ mipi_dsi_set_drvdata(dsi, pinfo);
+
+ err = panel_add(pinfo);
+ if (err < 0)
+ return err;
+
+ err = mipi_dsi_attach(dsi);
+ return err;
+}
+
+static int panel_remove(struct mipi_dsi_device *dsi)
+{
+ struct panel_info *pinfo = mipi_dsi_get_drvdata(dsi);
+ int err;
+
+ err = tianma_panel_unprepare(&pinfo->base);
+ if (err < 0)
+ DRM_DEV_ERROR(&dsi->dev, "failed to unprepare panel: %d\n",
+ err);
+
+ err = tianma_panel_disable(&pinfo->base);
+ if (err < 0)
+ DRM_DEV_ERROR(&dsi->dev, "failed to disable panel: %d\n", err);
+
+ err = mipi_dsi_detach(dsi);
+ if (err < 0)
+ DRM_DEV_ERROR(&dsi->dev, "failed to detach from DSI host: %d\n",
+ err);
+
+ drm_panel_detach(&pinfo->base);
+ panel_del(pinfo);
+
+ return 0;
+}
+
+static void panel_shutdown(struct mipi_dsi_device *dsi)
+{
+ struct panel_info *pinfo = mipi_dsi_get_drvdata(dsi);
+
+ tianma_panel_disable(&pinfo->base);
+ tianma_panel_unprepare(&pinfo->base);
+}
+
+static struct mipi_dsi_driver panel_driver = {
+ .driver = {
+ .name = "panel-tianma-nt36672a",
+ .of_match_table = panel_of_match,
+ },
+ .probe = panel_probe,
+ .remove = panel_remove,
+ .shutdown = panel_shutdown,
+};
+module_mipi_dsi_driver(panel_driver);
+
+MODULE_AUTHOR("Sumit Semwal <sumit.sem...@linaro.org>");
+MODULE_DESCRIPTION("TIANMA NT36672A MIPI-DSI LCD panel");
+MODULE_LICENSE("GPL");
--
2.27.0
