Message-Id: <20240601084528.22502-3-lvzhaoxiong@huaqin.corp-partner.google.com>
Date: Sat,  1 Jun 2024 16:45:26 +0800
From: Zhaoxiong Lv <lvzhaoxiong@...qin.corp-partner.google.com>
To: dmitry.torokhov@...il.com,
	robh@...nel.org,
	krzysztof.kozlowski+dt@...aro.org,
	conor+dt@...nel.org,
	jikos@...nel.org,
	benjamin.tissoires@...hat.co,
	dianders@...gle.com,
	hsinyi@...gle.com
Cc: dri-devel@...ts.freedesktop.org,
	devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Zhaoxiong Lv <lvzhaoxiong@...qin.corp-partner.google.com>
Subject: [PATCH v2 2/4] drm/panel: kd101ne3: add new panel driver

The bias IC of this kindisplay-kd101ne3 panel is placed
on the panel side, so when the panel is powered on,
there is no need to control AVDD and AVEE in the driver,
only 3.3v and reset are needed.

Signed-off-by: Zhaoxiong Lv <lvzhaoxiong@...qin.corp-partner.google.com>
---

Chage since V2:

-  1. Use the new mipi_dsi_dcs_write_seq_multi() function.
-  2. Modify Move mipi_dsi_dcs_set_display_off() and mipi_dsi_dcs_enter_sleep_mode() to disable(),
-  and drop kingdisplay_panel_enter_sleep_mode().
-  3. If prepare fails, disable GPIO before regulators.
-  4. This function drm_connector_set_panel_orientation() is no longer used. Delete it.
-  5. Drop ".shutdown = kingdisplay_panel_shutdown".

---
 drivers/gpu/drm/panel/Kconfig                 |   9 +
 drivers/gpu/drm/panel/Makefile                |   1 +
 .../drm/panel/panel-kingdisplay-kd101ne3.c    | 533 ++++++++++++++++++
 3 files changed, 543 insertions(+)
 create mode 100644 drivers/gpu/drm/panel/panel-kingdisplay-kd101ne3.c

diff --git a/drivers/gpu/drm/panel/Kconfig b/drivers/gpu/drm/panel/Kconfig
index e54f6f5604ed..71669e990e8e 100644
--- a/drivers/gpu/drm/panel/Kconfig
+++ b/drivers/gpu/drm/panel/Kconfig
@@ -297,6 +297,15 @@ config DRM_PANEL_KINGDISPLAY_KD097D04
 	  24 bit RGB per pixel. It provides a MIPI DSI interface to
 	  the host and has a built-in LED backlight.
 
+config DRM_PANEL_KINGDISPLAY_KD101NE3
+	tristate "Kingdisplay kd101ne3 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 kingdisplay kd101ne3
+	  4-lane 800x1280 MIPI DSI panel.
+
 config DRM_PANEL_LEADTEK_LTK050H3146W
 	tristate "Leadtek LTK050H3146W panel"
 	depends on OF
diff --git a/drivers/gpu/drm/panel/Makefile b/drivers/gpu/drm/panel/Makefile
index f0203f6e02f4..4576c9fe33d9 100644
--- a/drivers/gpu/drm/panel/Makefile
+++ b/drivers/gpu/drm/panel/Makefile
@@ -30,6 +30,7 @@ obj-$(CONFIG_DRM_PANEL_JDI_LPM102A188A) += panel-jdi-lpm102a188a.o
 obj-$(CONFIG_DRM_PANEL_JDI_R63452) += panel-jdi-fhd-r63452.o
 obj-$(CONFIG_DRM_PANEL_KHADAS_TS050) += panel-khadas-ts050.o
 obj-$(CONFIG_DRM_PANEL_KINGDISPLAY_KD097D04) += panel-kingdisplay-kd097d04.o
+obj-$(CONFIG_DRM_PANEL_KINGDISPLAY_KD101NE3) += panel-kingdisplay-kd101ne3.o
 obj-$(CONFIG_DRM_PANEL_LEADTEK_LTK050H3146W) += panel-leadtek-ltk050h3146w.o
 obj-$(CONFIG_DRM_PANEL_LEADTEK_LTK500HD1829) += panel-leadtek-ltk500hd1829.o
 obj-$(CONFIG_DRM_PANEL_LG_LB035Q02) += panel-lg-lb035q02.o
diff --git a/drivers/gpu/drm/panel/panel-kingdisplay-kd101ne3.c b/drivers/gpu/drm/panel/panel-kingdisplay-kd101ne3.c
new file mode 100644
index 000000000000..8994a1c9afb5
--- /dev/null
+++ b/drivers/gpu/drm/panel/panel-kingdisplay-kd101ne3.c
@@ -0,0 +1,533 @@
+// SPDX-License-Identifier: GPL-2.0
+/* Panels based on the JD9365DA display controller.
+ * Author: Zhaoxiong Lv <lvzhaoxiong@...qin.corp-partner.google.com>
+ */
+
+#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_connector.h>
+#include <drm/drm_crtc.h>
+#include <drm/drm_mipi_dsi.h>
+#include <drm/drm_panel.h>
+
+#include <video/mipi_display.h>
+
+struct kingdisplay_panel;
+
+struct panel_desc {
+	const struct drm_display_mode *modes;
+	unsigned int bpc;
+
+	/**
+	 * @width_mm: width of the panel's active display area
+	 * @height_mm: height of the panel's active display area
+	 */
+	struct {
+		unsigned int width_mm;
+		unsigned int height_mm;
+	} size;
+
+	unsigned long mode_flags;
+	enum mipi_dsi_pixel_format format;
+	const struct panel_init_cmd *init_cmds;
+	int (*init)(struct kingdisplay_panel *kingdisplay);
+	unsigned int lanes;
+	bool discharge_on_disable;
+	bool lp11_before_reset;
+};
+
+struct kingdisplay_panel {
+	struct drm_panel base;
+	struct mipi_dsi_device *dsi;
+
+	const struct panel_desc *desc;
+
+	enum drm_panel_orientation orientation;
+	struct regulator *pp3300;
+	struct gpio_desc *enable_gpio;
+};
+
+static int kingdisplay_kd101ne3_init(struct kingdisplay_panel *kingdisplay)
+{
+	struct mipi_dsi_multi_context dsi_ctx = { .dsi = kingdisplay->dsi };
+
+	/* T5:HWreset to init_code >= 50ms */
+	msleep(50);
+
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xe0, 0x00);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xe1, 0x93);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xe2, 0x65);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xe3, 0xf8);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x80, 0x03);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xe0, 0x01);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x0c, 0x74);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x17, 0x00);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x18, 0xc7);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x19, 0x01);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x1a, 0x00);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x1b, 0xc7);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x1c, 0x01);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x24, 0xfe);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x37, 0x19);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x35, 0x28);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x38, 0x05);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x39, 0x08);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x3a, 0x12);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x3c, 0x7e);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x3d, 0xff);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x3e, 0xff);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x3f, 0x7f);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x40, 0x06);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x41, 0xa0);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x43, 0x1e);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x44, 0x0b);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x55, 0x02);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x57, 0x6a);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x59, 0x0a);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x5a, 0x2e);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x5b, 0x1a);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x5c, 0x15);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x5d, 0x7f);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x5e, 0x61);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x5f, 0x50);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x60, 0x43);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x61, 0x3f);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x62, 0x32);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x63, 0x35);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x64, 0x1f);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x65, 0x38);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x66, 0x36);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x67, 0x36);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x68, 0x54);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x69, 0x42);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x6a, 0x48);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x6b, 0x39);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x6c, 0x34);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x6d, 0x26);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x6e, 0x14);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x6f, 0x02);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x70, 0x7f);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x71, 0x61);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x72, 0x50);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x73, 0x43);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x74, 0x3f);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x75, 0x32);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x76, 0x35);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x77, 0x1f);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x78, 0x38);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x79, 0x36);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x7a, 0x36);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x7b, 0x54);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x7c, 0x42);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x7d, 0x48);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x7e, 0x39);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x7f, 0x34);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x80, 0x26);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x81, 0x14);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x82, 0x02);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xe0, 0x02);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x00, 0x52);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x01, 0x5f);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x02, 0x5f);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x03, 0x50);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x04, 0x77);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x05, 0x57);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x06, 0x5f);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x07, 0x4e);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x08, 0x4c);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x09, 0x5f);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x0a, 0x4a);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x0b, 0x48);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x0c, 0x5f);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x0d, 0x46);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x0e, 0x44);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x0f, 0x40);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x10, 0x5f);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x11, 0x5f);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x12, 0x5f);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x13, 0x5f);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x14, 0x5f);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x15, 0x5f);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x16, 0x53);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x17, 0x5f);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x18, 0x5f);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x19, 0x51);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x1a, 0x77);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x1b, 0x57);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x1c, 0x5f);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x1d, 0x4f);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x1e, 0x4d);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x1f, 0x5f);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x20, 0x4b);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x21, 0x49);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x22, 0x5f);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x23, 0x47);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x24, 0x45);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x25, 0x41);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x26, 0x5f);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x27, 0x5f);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x28, 0x5f);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x29, 0x5f);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x2a, 0x5f);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x2b, 0x5f);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x2c, 0x13);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x2d, 0x1f);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x2e, 0x1f);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x2f, 0x01);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x30, 0x17);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x31, 0x17);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x32, 0x1f);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x33, 0x0d);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x34, 0x0f);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x35, 0x1f);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x36, 0x05);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x37, 0x07);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x38, 0x1f);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x39, 0x09);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x3a, 0x0b);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x3b, 0x11);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x3c, 0x1f);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x3d, 0x1f);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x3e, 0x1f);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x3f, 0x1f);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x40, 0x1f);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x41, 0x1f);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x42, 0x12);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x43, 0x1f);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x44, 0x1f);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x45, 0x00);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x46, 0x17);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x47, 0x17);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x48, 0x1f);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x49, 0x0c);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x4a, 0x0e);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x4b, 0x1f);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x4c, 0x04);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x4d, 0x06);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x4e, 0x1f);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x4f, 0x08);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x50, 0x0a);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x51, 0x10);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x52, 0x1f);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x53, 0x1f);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x54, 0x1f);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x55, 0x1f);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x56, 0x1f);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x57, 0x1f);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x58, 0x40);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x5b, 0x10);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x5c, 0x06);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x5d, 0x40);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x5e, 0x00);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x5f, 0x00);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x60, 0x40);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x61, 0x03);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x62, 0x04);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x63, 0x6c);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x64, 0x6c);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x65, 0x75);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x66, 0x08);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x67, 0xb4);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x68, 0x08);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x69, 0x6c);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x6a, 0x6c);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x6b, 0x0c);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x6d, 0x00);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x6e, 0x00);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x6f, 0x88);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x75, 0xbb);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x76, 0x00);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x77, 0x05);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x78, 0x2a);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xe0, 0x04);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x00, 0x0e);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x02, 0xb3);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x09, 0x61);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x0e, 0x48);
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xe0, 0x00);
+	if (dsi_ctx.accum_err)
+		return dsi_ctx.accum_err;
+
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, MIPI_DCS_EXIT_SLEEP_MODE);
+	if (dsi_ctx.accum_err)
+		return dsi_ctx.accum_err;
+
+	msleep(120);
+
+	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, MIPI_DCS_SET_DISPLAY_ON);
+	if (dsi_ctx.accum_err)
+		return dsi_ctx.accum_err;
+
+	msleep(20);
+
+	return 0;
+};
+
+static inline struct kingdisplay_panel *to_kingdisplay_panel(struct drm_panel *panel)
+{
+	return container_of(panel, struct kingdisplay_panel, base);
+}
+
+static int kingdisplay_panel_disable(struct drm_panel *panel)
+{
+	struct kingdisplay_panel *kingdisplay = to_kingdisplay_panel(panel);
+	int err;
+
+	kingdisplay->dsi->mode_flags &= ~MIPI_DSI_MODE_LPM;
+
+	msleep(100);
+
+	err = mipi_dsi_dcs_set_display_off(kingdisplay->dsi);
+	if (err < 0)
+		dev_err(panel->dev, "failed to set display off: %d\n", err);
+
+	msleep(50);
+
+	err = mipi_dsi_dcs_enter_sleep_mode(kingdisplay->dsi);
+	if (err < 0) {
+		dev_err(panel->dev, "failed to enter sleep mode: %d\n", err);
+		return err;
+	}
+
+	msleep(120);
+
+	return 0;
+}
+
+static int kingdisplay_panel_unprepare(struct drm_panel *panel)
+{
+	struct kingdisplay_panel *kingdisplay = to_kingdisplay_panel(panel);
+	int err;
+
+	gpiod_set_value_cansleep(kingdisplay->enable_gpio, 0);
+
+	/* T15: 2ms */
+	usleep_range(1000, 2000);
+
+	err = regulator_disable(kingdisplay->pp3300);
+	if (err < 0)
+		return err;
+
+	return 0;
+}
+
+static int kingdisplay_panel_prepare(struct drm_panel *panel)
+{
+	struct kingdisplay_panel *kingdisplay = to_kingdisplay_panel(panel);
+	int err;
+
+	gpiod_set_value(kingdisplay->enable_gpio, 0);
+
+	err = regulator_enable(kingdisplay->pp3300);
+	if (err < 0)
+		return err;
+
+	/* T1:Vdd to mipi_lp >= 0ms */
+	usleep_range(5000, 6000);
+
+	if (kingdisplay->desc->lp11_before_reset) {
+		err = mipi_dsi_dcs_nop(kingdisplay->dsi);
+		if (err < 0)
+			goto poweroff;
+
+		usleep_range(1000, 2000);
+	}
+
+	/* T2: 10ms, T1 + T2 > 60ms */
+	msleep(60);
+
+	gpiod_set_value_cansleep(kingdisplay->enable_gpio, 1);
+
+	err = kingdisplay->desc->init(kingdisplay);
+	if (err < 0)
+		goto poweroff;
+
+	return 0;
+
+poweroff:
+	gpiod_set_value(kingdisplay->enable_gpio, 0);
+		/* T6: 2ms */
+	usleep_range(1000, 2000);
+	regulator_disable(kingdisplay->pp3300);
+
+	return err;
+}
+
+static int kingdisplay_panel_enable(struct drm_panel *panel)
+{
+	msleep(130);
+	return 0;
+}
+
+static const struct drm_display_mode kingdisplay_kd101ne3_40ti_default_mode = {
+	.clock = 70595,
+	.hdisplay = 800,
+	.hsync_start = 800 + 30,
+	.hsync_end = 800 + 30 + 30,
+	.htotal = 800 + 30 + 30 + 30,
+	.vdisplay = 1280,
+	.vsync_start = 1280 + 30,
+	.vsync_end = 1280 + 30 + 4,
+	.vtotal = 1280 + 30 + 4 + 8,
+	.type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED,
+};
+
+static const struct panel_desc kingdisplay_kd101ne3_40ti_desc = {
+	.modes = &kingdisplay_kd101ne3_40ti_default_mode,
+	.bpc = 8,
+	.size = {
+		.width_mm = 135,
+		.height_mm = 216,
+	},
+	.lanes = 4,
+	.format = MIPI_DSI_FMT_RGB888,
+	.mode_flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_VIDEO_SYNC_PULSE |
+		      MIPI_DSI_MODE_LPM,
+	.init = kingdisplay_kd101ne3_init,
+	.lp11_before_reset = true,
+};
+
+static int kingdisplay_panel_get_modes(struct drm_panel *panel,
+			       struct drm_connector *connector)
+{
+	struct kingdisplay_panel *kingdisplay = to_kingdisplay_panel(panel);
+	const struct drm_display_mode *m = kingdisplay->desc->modes;
+	struct drm_display_mode *mode;
+
+	mode = drm_mode_duplicate(connector->dev, m);
+	if (!mode) {
+		dev_err(panel->dev, "failed to add mode %ux%u@%u\n",
+			m->hdisplay, m->vdisplay, drm_mode_vrefresh(m));
+		return -ENOMEM;
+	}
+
+	mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED;
+	drm_mode_set_name(mode);
+	drm_mode_probed_add(connector, mode);
+
+	connector->display_info.width_mm = kingdisplay->desc->size.width_mm;
+	connector->display_info.height_mm = kingdisplay->desc->size.height_mm;
+	connector->display_info.bpc = kingdisplay->desc->bpc;
+
+	return 1;
+}
+
+static enum drm_panel_orientation kingdisplay_panel_get_orientation(struct drm_panel *panel)
+{
+	struct kingdisplay_panel *kingdisplay = to_kingdisplay_panel(panel);
+
+	return kingdisplay->orientation;
+}
+
+static const struct drm_panel_funcs kingdisplay_panel_funcs = {
+	.disable = kingdisplay_panel_disable,
+	.unprepare = kingdisplay_panel_unprepare,
+	.prepare = kingdisplay_panel_prepare,
+	.enable = kingdisplay_panel_enable,
+	.get_modes = kingdisplay_panel_get_modes,
+	.get_orientation = kingdisplay_panel_get_orientation,
+};
+
+static int kingdisplay_panel_add(struct kingdisplay_panel *kingdisplay)
+{
+	struct device *dev = &kingdisplay->dsi->dev;
+	int err;
+
+	kingdisplay->pp3300 = devm_regulator_get(dev, "pp3300");
+	if (IS_ERR(kingdisplay->pp3300))
+		return dev_err_probe(dev, PTR_ERR(kingdisplay->pp3300),
+				     "Cannot get pp3300\n");
+
+	kingdisplay->enable_gpio = devm_gpiod_get(dev, "enable", GPIOD_OUT_LOW);
+	if (IS_ERR(kingdisplay->enable_gpio))
+		return dev_err_probe(dev, PTR_ERR(kingdisplay->enable_gpio),
+				     "Cannot get enable GPIO\n");
+
+	drm_panel_init(&kingdisplay->base, dev, &kingdisplay_panel_funcs,
+		       DRM_MODE_CONNECTOR_DSI);
+
+	err = of_drm_get_panel_orientation(dev->of_node, &kingdisplay->orientation);
+	if (err < 0) {
+		dev_err(dev, "%pOF: failed to get orientation %d\n", dev->of_node, err);
+		return err;
+	}
+
+	err = drm_panel_of_backlight(&kingdisplay->base);
+	if (err)
+		return err;
+
+	kingdisplay->base.funcs = &kingdisplay_panel_funcs;
+	kingdisplay->base.dev = &kingdisplay->dsi->dev;
+
+	drm_panel_add(&kingdisplay->base);
+
+	return 0;
+}
+
+static int kingdisplay_panel_probe(struct mipi_dsi_device *dsi)
+{
+	struct kingdisplay_panel *kingdisplay;
+	int ret;
+	const struct panel_desc *desc;
+
+	kingdisplay = devm_kzalloc(&dsi->dev, sizeof(*kingdisplay), GFP_KERNEL);
+	if (!kingdisplay)
+		return -ENOMEM;
+
+	desc = of_device_get_match_data(&dsi->dev);
+	dsi->lanes = desc->lanes;
+	dsi->format = desc->format;
+	dsi->mode_flags = desc->mode_flags;
+	kingdisplay->desc = desc;
+	kingdisplay->dsi = dsi;
+	ret = kingdisplay_panel_add(kingdisplay);
+	if (ret < 0)
+		return ret;
+
+	mipi_dsi_set_drvdata(dsi, kingdisplay);
+
+	ret = mipi_dsi_attach(dsi);
+	if (ret)
+		drm_panel_remove(&kingdisplay->base);
+
+	return ret;
+}
+
+static void kingdisplay_panel_remove(struct mipi_dsi_device *dsi)
+{
+	struct kingdisplay_panel *kingdisplay = 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);
+
+	if (kingdisplay->base.dev)
+		drm_panel_remove(&kingdisplay->base);
+}
+
+static const struct of_device_id kingdisplay_of_match[] = {
+	{ .compatible = "kingdisplay,kd101ne3-40ti",
+	  .data = &kingdisplay_kd101ne3_40ti_desc
+	},
+	{ /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(of, kingdisplay_of_match);
+
+static struct mipi_dsi_driver kingdisplay_panel_driver = {
+	.driver = {
+		.name = "panel-kingdisplay-kd101ne3",
+		.of_match_table = kingdisplay_of_match,
+	},
+	.probe = kingdisplay_panel_probe,
+	.remove = kingdisplay_panel_remove,
+};
+module_mipi_dsi_driver(kingdisplay_panel_driver);
+
+MODULE_AUTHOR("Zhaoxiong Lv <lvzhaoxiong@...qin.corp-partner.google.com>");
+MODULE_DESCRIPTION("kingdisplay kd101ne3-40ti 800x1280 video mode panel driver");
+MODULE_LICENSE("GPL v2");
-- 
2.17.1

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