---
drivers/gpu/drm/panel/Kconfig | 9 +
drivers/gpu/drm/panel/Makefile | 1 +
drivers/gpu/drm/panel/panel-novatek-nt71392qg.c | 438 ++++++++++++++++++++++++
3 files changed, 448 insertions(+)
mode change 100644 => 100755 drivers/gpu/drm/panel/Kconfig
mode change 100644 => 100755 drivers/gpu/drm/panel/Makefile
create mode 100755 drivers/gpu/drm/panel/panel-novatek-nt71392qg.c
diff --git a/drivers/gpu/drm/panel/Kconfig b/drivers/gpu/drm/panel/Kconfig
old mode 100644
new mode 100755
index 726f3fb..069373a
--- a/drivers/gpu/drm/panel/Kconfig
+++ b/drivers/gpu/drm/panel/Kconfig
@@ -150,4 +150,13 @@ config DRM_PANEL_SITRONIX_ST7789V
Say Y here if you want to enable support for the Sitronix
ST7789V controller for 240x320 LCD panels
+config DRM_PANEL_NOVATEK_NT71392QG
+ tristate "Novatek NT71392QG 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 Novatek
+ NT71392QG controller for 1200x1920 LCD panel
+
endmenu
diff --git a/drivers/gpu/drm/panel/Makefile b/drivers/gpu/drm/panel/Makefile
old mode 100644
new mode 100755
index 77ede34..4d0e84f
--- a/drivers/gpu/drm/panel/Makefile
+++ b/drivers/gpu/drm/panel/Makefile
@@ -14,3 +14,4 @@ obj-$(CONFIG_DRM_PANEL_SEIKO_43WVF1G) += panel-seiko-43wvf1g.o
obj-$(CONFIG_DRM_PANEL_SHARP_LQ101R1SX01) += panel-sharp-lq101r1sx01.o
obj-$(CONFIG_DRM_PANEL_SHARP_LS043T1LE01) += panel-sharp-ls043t1le01.o
obj-$(CONFIG_DRM_PANEL_SITRONIX_ST7789V) += panel-sitronix-st7789v.o
+obj-$(CONFIG_DRM_PANEL_NOVATEK_NT71392QG) += panel-novatek-nt71392qg.o
\ No newline at end of file
diff --git a/drivers/gpu/drm/panel/panel-novatek-nt71392qg.c
b/drivers/gpu/drm/panel/panel-novatek-nt71392qg.c
new file mode 100755
index 0000000..4d540e8
--- /dev/null
+++ b/drivers/gpu/drm/panel/panel-novatek-nt71392qg.c
@@ -0,0 +1,438 @@
+/*
+ * Copyright (C) 2015 Red Hat
+ * Author: steamport <[email protected]>
+ * This is based off of Rob Clark's panel-lg-novatek-1080p-vid.c (thanks rob
for your help!)
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published by
+ * the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <linux/backlight.h>
+#include <linux/gpio/consumer.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/regulator/consumer.h>
+
+#include <drm/drmP.h>
+#include <drm/drm_crtc.h>
+#include <drm/drm_mipi_dsi.h>
+#include <drm/drm_panel.h>
+
+#include <video/mipi_display.h>
+
+struct lg_panel {
+ struct drm_panel base;
+ struct mipi_dsi_device *dsi;
+
+ struct backlight_device *backlight;
+ struct regulator *supply;
+ struct gpio_desc *reset_gpio;
+
+ bool prepared;
+ bool enabled;
+
+ const struct drm_display_mode *mode;
+};
+
+static inline struct lg_panel *to_lg_panel(struct drm_panel *panel)
+{
+ return container_of(panel, struct lg_panel, base);
+}
+
+static int lg_panel_init(struct lg_panel *lg) //translated from
https://github.com/LineageOS/android_kernel_amazon_hdx-common/blob/cm-14.1/arch/arm/boot/dts/dsi-panel-novatek-1080p-video.dtsi
+{
+ struct mipi_dsi_device *dsi = lg->dsi;
+ int ret;
+
+ dsi->mode_flags |= MIPI_DSI_MODE_LPM;
+
+ msleep(5)
+ ret = mipi_dsi_turn_on_peripheral(dsi); /* peripheral on, change the
delay from 100 to 5ms */
+ if (ret < 0)
+ return ret;
+
+ ret = mipi_dsi_generic_short_write(dsi, (u8[]){0xf3, 0xa8}, 2); /*
unlock page 8 */
+ if (ret < 0)
+ return ret;
+
+ ret = mipi_dsi_generic_short_write(dsi, (u8[]){0x7a, 0x2b}, 2); /*
0x87a = 2b, this and below relate to garbage screen */
+ if (ret < 0)
+ return ret;
+
+ ret = mipi_dsi_generic_short_write(dsi, (u8[]){0x7b, 0x63}, 2); /*
0x87b = 63 */
+ if (ret < 0)
+ return ret;
+
+ ret = mipi_dsi_generic_short_write(dsi, (u8[]){0x7c, 0x0d}, 2); /*
0x87c = 0d */
+ if (ret < 0)
+ return ret;
+
+ ret = mipi_dsi_generic_short_write(dsi, (u8[]){0x7e, 0x60}, 2); /*
0x87e = 60 */
+ if (ret < 0)
+ return ret;
+
+ ret = mipi_dsi_generic_short_write(dsi, (u8[]){0x80, 0x00}, 2); /*
0x880 = 00 */
+ if (ret < 0)
+ return ret;
+
+ ret = mipi_dsi_generic_short_write(dsi, (u8[]){0x81, 0x00}, 2); /*
0x881 = 00 */
+ if (ret < 0)
+ return ret;
+
+ msleep(1)
+ ret = mipi_dsi_generic_short_write(dsi); /* lock page 8 */
+ if (ret < 0)
+ return ret;
+
+ ret = mipi_dsi_generic_short_write(dsi, (u8[]){0xf3, 0xa1}, 2); /*
unlock page 1 */
+ if (ret < 0)
+ return ret;
+
+ ret = mipi_dsi_generic_short_write(dsi, (u8[]){0x53, 0x83}, 2); /*
0x153 = 80 */
+ if (ret < 0)
+ return ret;
+ return 0;
+
+ msleep(1)
+ ret = mipi_dsi_generic_short_write(dsi); /* lock page 1 */
+ if (ret < 0)
+ return ret;
+}
+
+static int lg_panel_on(struct lg_panel *lg)
+{
+ struct mipi_dsi_device *dsi = lg->dsi;
+ int ret;
+
+ dsi->mode_flags |= MIPI_DSI_MODE_LPM;
+
+ ret = mipi_dsi_dcs_set_display_on(dsi);
+ if (ret < 0)
+ return ret;
+
+ msleep(40);
+
+ return 0;
+}
+
+static int lg_panel_off(struct lg_panel *lg)
+{
+ struct mipi_dsi_device *dsi = lg->dsi;
+ int ret;
+
+ dsi->mode_flags &= ~MIPI_DSI_MODE_LPM;
+
+ ret = mipi_dsi_dcs_write(dsi, 0xff, (u8[]){ 0x10 }, 1);
+ if (ret < 0)
+ return ret;
+
+ ret = mipi_dsi_dcs_set_display_off(dsi);
+ if (ret < 0)
+ return ret;
+
+ ret = mipi_dsi_dcs_enter_sleep_mode(dsi);
+ if (ret < 0)
+ return ret;
+
+ msleep(100);
+
+ return 0;
+}
+
+static int lg_panel_disable(struct drm_panel *panel)
+{
+ struct lg_panel *lg = to_lg_panel(panel);
+
+ if (!lg->enabled)
+ return 0;
+
+ DRM_DEBUG("disable\n");
+
+ if (lg->backlight) {
+ lg->backlight->props.power = FB_BLANK_POWERDOWN;
+ backlight_update_status(lg->backlight);
+ }
+
+ lg->enabled = false;
+
+ return 0;
+}
+
+static int lg_panel_unprepare(struct drm_panel *panel)
+{
+ struct lg_panel *lg = to_lg_panel(panel);
+ int ret;
+
+ if (!lg->prepared)
+ return 0;
+
+ DRM_DEBUG("unprepare\n");
+
+ ret = lg_panel_off(lg);
+ if (ret) {
+ dev_err(panel->dev, "failed to set panel off: %d\n", ret);
+ return ret;
+ }
+
+ regulator_disable(lg->supply);
+ if (lg->reset_gpio)
+ gpiod_set_value(lg->reset_gpio, 0);
+
+ lg->prepared = false;
+
+ return 0;
+}
+
+static int lg_panel_prepare(struct drm_panel *panel)
+{
+ struct lg_panel *lg = to_lg_panel(panel);
+ int ret;
+
+ if (lg->prepared)
+ return 0;
+
+ DRM_DEBUG("prepare\n");
+
+ if (lg->reset_gpio) {
+ gpiod_set_value(lg->reset_gpio, 0);
+ msleep(5);
+ }
+
+ ret = regulator_enable(lg->supply);
+ if (ret < 0)
+ return ret;
+
+ msleep(20);
+
+ if (lg->reset_gpio) {
+ gpiod_set_value(lg->reset_gpio, 1);
+ msleep(10);
+ }
+
+ msleep(150);
+
+ ret = lg_panel_init(lg);
+ if (ret) {
+ dev_err(panel->dev, "failed to init panel: %d\n", ret);
+ goto poweroff;
+ }
+
+ ret = lg_panel_on(lg);
+ if (ret) {
+ dev_err(panel->dev, "failed to set panel on: %d\n", ret);
+ goto poweroff;
+ }
+
+ lg->prepared = true;
+
+ return 0;
+
+poweroff:
+ regulator_disable(lg->supply);
+ if (lg->reset_gpio)
+ gpiod_set_value(lg->reset_gpio, 0);
+ return ret;
+}
+
+static int lg_panel_enable(struct drm_panel *panel)
+{
+ struct lg_panel *lg = to_lg_panel(panel);
+
+ if (lg->enabled)
+ return 0;
+
+ DRM_DEBUG("enable\n");
+
+ if (lg->backlight) {
+ lg->backlight->props.power = FB_BLANK_UNBLANK;
+ backlight_update_status(lg->backlight);
+ }
+
+ lg->enabled = true;
+
+ return 0;
+}
+
+static const struct drm_display_mode default_mode = {
+ .clock = 165080,
+ .hdisplay = 1200,
+ .hsync_start = 1200 + 56,
+ .hsync_end = 1200 + 56 + 8,
+ .htotal = 1200 + 56 + 8 + 8,
+ .vdisplay = 1920,
+ .vsync_start = 1920 + 233,
+ .vsync_end = 1920 + 233 + 2,
+ .vtotal = 1920 + 233 + 2 + 8,
+ .vrefresh = 60,
+};
+
+static int lg_panel_get_modes(struct drm_panel *panel)
+{
+ struct drm_display_mode *mode;
+
+ mode = drm_mode_duplicate(panel->drm, &default_mode);
+ if (!mode) {
+ dev_err(panel->drm->dev, "failed to add mode %ux%ux@%u\n",
+ default_mode.hdisplay, default_mode.vdisplay,
+ default_mode.vrefresh);
+ return -ENOMEM;
+ }
+
+ drm_mode_set_name(mode);
+
+ drm_mode_probed_add(panel->connector, mode);
+
+ panel->connector->display_info.width_mm = 64;
+ panel->connector->display_info.height_mm = 114;
+
+ return 1;
+}
+
+static const struct drm_panel_funcs lg_panel_funcs = {
+ .disable = lg_panel_disable,
+ .unprepare = lg_panel_unprepare,
+ .prepare = lg_panel_prepare,
+ .enable = lg_panel_enable,
+ .get_modes = lg_panel_get_modes,
+};
+
+static const struct of_device_id lg_of_match[] = {
+ { .compatible = "novatek,nt71392qg", },
+ { }
+};
+MODULE_DEVICE_TABLE(of, lg_of_match);
+
+static int lg_panel_add(struct lg_panel *lg)
+{
+ struct device *dev= &lg->dsi->dev;
+ struct device_node *np;
+ int ret;
+
+ lg->mode = &default_mode;
+
+ lg->supply = devm_regulator_get(dev, "power");
+ if (IS_ERR(lg->supply))
+ return PTR_ERR(lg->supply);
+
+ lg->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_LOW);
+ if (IS_ERR(lg->reset_gpio)) {
+ dev_err(dev, "cannot get reset-gpios %ld\n",
+ PTR_ERR(lg->reset_gpio));
+ lg->reset_gpio = NULL;
+ } else {
+ gpiod_direction_output(lg->reset_gpio, 0);
+ }
+
+ np = of_parse_phandle(dev->of_node, "backlight", 0);
+ if (np) {
+ lg->backlight = of_find_backlight_by_node(np);
+ of_node_put(np);
+
+ if (!lg->backlight)
+ return -EPROBE_DEFER;
+ }
+
+ drm_panel_init(&lg->base);
+ lg->base.funcs = &lg_panel_funcs;
+ lg->base.dev = &lg->dsi->dev;
+
+ ret = drm_panel_add(&lg->base);
+ if (ret < 0)
+ goto put_backlight;
+
+ return 0;
+
+ put_backlight:
+ if (lg->backlight)
+ put_device(&lg->backlight->dev);
+
+ return ret;
+}
+
+static void lg_panel_del(struct lg_panel *lg)
+{
+ if (lg->base.dev)
+ drm_panel_remove(&lg->base);
+
+ if (lg->backlight)
+ put_device(&lg->backlight->dev);
+}
+
+static int lg_panel_probe(struct mipi_dsi_device *dsi)
+{
+ struct lg_panel *lg;
+ int ret;
+
+ dsi->lanes = 4;
+ dsi->format = MIPI_DSI_FMT_RGB888;
+ dsi->mode_flags = MIPI_DSI_MODE_VIDEO |
+ MIPI_DSI_MODE_VIDEO_HSE |
+ MIPI_DSI_CLOCK_NON_CONTINUOUS |
+ MIPI_DSI_MODE_EOT_PACKET;
+
+ lg = devm_kzalloc(&dsi->dev, sizeof(*lg), GFP_KERNEL);
+ if (!lg) {
+ return -ENOMEM;
+ }
+
+ mipi_dsi_set_drvdata(dsi, lg);
+
+ lg->dsi = dsi;
+
+ ret = lg_panel_add(lg);
+ if (ret < 0) {
+ return ret;
+ }
+
+ return mipi_dsi_attach(dsi);
+}
+
+static int lg_panel_remove(struct mipi_dsi_device *dsi)
+{
+ struct lg_panel *lg = mipi_dsi_get_drvdata(dsi);
+ int ret;
+
+ ret = lg_panel_disable(&lg->base);
+ if (ret < 0)
+ dev_err(&dsi->dev, "failed to disable panel: %d\n", ret);
+
+ ret = mipi_dsi_detach(dsi);
+ if (ret < 0)
+ dev_err(&dsi->dev, "failed to detach from DSI host: %d\n", ret);
+
+ drm_panel_detach(&lg->base);
+ lg_panel_del(lg);
+
+ return 0;
+}
+
+static void lg_panel_shutdown(struct mipi_dsi_device *dsi)
+{
+ struct lg_panel *lg = mipi_dsi_get_drvdata(dsi);
+
+ lg_panel_disable(&lg->base);
+}
+
+static struct mipi_dsi_driver lg_panel_driver = {
+ .driver = {
+ .name = "novatek-1080p-video-mode-dsi-panel",
+ .of_match_table = lg_of_match,
+ },
+ .probe = lg_panel_probe,
+ .remove = lg_panel_remove,
+ .shutdown = lg_panel_shutdown,
+};
+module_mipi_dsi_driver(lg_panel_driver);
+
+MODULE_AUTHOR("steamport <[email protected]>");
+MODULE_DESCRIPTION("Novatek panel driver (linux-mainline, for amazon-thor)");
+MODULE_LICENSE("GPL v2");
\ No newline at end of file
--
2.7.4
