[PATCH v3 04/10] video: add support of panel OTM8009A

From: yannick fertre
Date: Tue Mar 13 2018 - 09:51:14 EST

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Support for Orise Tech otm8009a 480p dsi 2dl video mode panel.

Signed-off-by: yannick fertre <yannick.fertre@xxxxxx>
---
drivers/video/Kconfig | 8 +
drivers/video/Makefile | 1 +
drivers/video/orisetech_otm8009a.c | 327 +++++++++++++++++++++++++++++++++++++
3 files changed, 336 insertions(+)
create mode 100644 drivers/video/orisetech_otm8009a.c

diff --git a/drivers/video/Kconfig b/drivers/video/Kconfig
index 1981298..b5fc535 100644
--- a/drivers/video/Kconfig
+++ b/drivers/video/Kconfig
@@ -320,6 +320,14 @@ config VIDEO_LCD_ANX9804
from a parallel LCD interface and translate it on the fy into a DP
interface for driving eDP TFT displays. It uses I2C for configuration.

+config VIDEO_LCD_ORISETECH_OTM8009A
+ bool "OTM8009A DSI LCD panel support"
+ depends on DM_VIDEO
+ select VIDEO_MIPI_DSI
+ default n
+ ---help---
+ Support for Orise Tech otm8009a 480p dsi 2dl video mode panel.
+
config VIDEO_LCD_SSD2828
bool "SSD2828 bridge chip"
default n
diff --git a/drivers/video/Makefile b/drivers/video/Makefile
index 6f42cca..65002af 100644
--- a/drivers/video/Makefile
+++ b/drivers/video/Makefile
@@ -37,6 +37,7 @@ obj-$(CONFIG_VIDEO_COREBOOT) += coreboot.o
obj-$(CONFIG_VIDEO_DA8XX) += da8xx-fb.o videomodes.o
obj-$(CONFIG_VIDEO_LCD_ANX9804) += anx9804.o
obj-$(CONFIG_VIDEO_LCD_HITACHI_TX18D42VM) += hitachi_tx18d42vm_lcd.o
+obj-$(CONFIG_VIDEO_LCD_ORISETECH_OTM8009A) += orisetech_otm8009a.o
obj-$(CONFIG_VIDEO_LCD_SSD2828) += ssd2828.o
obj-$(CONFIG_VIDEO_MB862xx) += mb862xx.o videomodes.o
obj-$(CONFIG_VIDEO_MX3) += mx3fb.o videomodes.o
diff --git a/drivers/video/orisetech_otm8009a.c b/drivers/video/orisetech_otm8009a.c
new file mode 100644
index 0000000..aa8139a
--- /dev/null
+++ b/drivers/video/orisetech_otm8009a.c
@@ -0,0 +1,327 @@
+/*
+ * Copyright (C) 2018 STMicroelectronics - All Rights Reserved
+ * Author(s): Yannick Fertre <yannick.fertre@xxxxxx> for STMicroelectronics.
+ * Philippe Cornu <philippe.cornu@xxxxxx> for STMicroelectronics.
+ *
+ * This otm8009a panel driver is based on the panel driver from
+ * drivers/gpu/drm/panel/panel-orisetech-otm8009a.c (kernel linux)
+ *
+ * SPDX-License-Identifier: GPL-2.0
+ */
+#include <common.h>
+#include <backlight.h>
+#include <dm.h>
+#include <mipi_display.h>
+#include <panel.h>
+#include <asm/gpio.h>
+#include <power/regulator.h>
+
+#define DRV_NAME "orisetech_otm8009a"
+
+#define OTM8009A_BACKLIGHT_DEFAULT 240
+#define OTM8009A_BACKLIGHT_MAX 255
+
+/* Manufacturer Command Set */
+#define MCS_ADRSFT 0x0000 /* Address Shift Function */
+#define MCS_PANSET 0xB3A6 /* Panel Type Setting */
+#define MCS_SD_CTRL 0xC0A2 /* Source Driver Timing Setting */
+#define MCS_P_DRV_M 0xC0B4 /* Panel Driving Mode */
+#define MCS_OSC_ADJ 0xC181 /* Oscillator Adjustment for Idle/Normal mode */
+#define MCS_RGB_VID_SET 0xC1A1 /* RGB Video Mode Setting */
+#define MCS_SD_PCH_CTRL 0xC480 /* Source Driver Precharge Control */
+#define MCS_NO_DOC1 0xC48A /* Command not documented */
+#define MCS_PWR_CTRL1 0xC580 /* Power Control Setting 1 */
+#define MCS_PWR_CTRL2 0xC590 /* Power Control Setting 2 for Normal Mode */
+#define MCS_PWR_CTRL4 0xC5B0 /* Power Control Setting 4 for DC Voltage */
+#define MCS_PANCTRLSET1 0xCB80 /* Panel Control Setting 1 */
+#define MCS_PANCTRLSET2 0xCB90 /* Panel Control Setting 2 */
+#define MCS_PANCTRLSET3 0xCBA0 /* Panel Control Setting 3 */
+#define MCS_PANCTRLSET4 0xCBB0 /* Panel Control Setting 4 */
+#define MCS_PANCTRLSET5 0xCBC0 /* Panel Control Setting 5 */
+#define MCS_PANCTRLSET6 0xCBD0 /* Panel Control Setting 6 */
+#define MCS_PANCTRLSET7 0xCBE0 /* Panel Control Setting 7 */
+#define MCS_PANCTRLSET8 0xCBF0 /* Panel Control Setting 8 */
+#define MCS_PANU2D1 0xCC80 /* Panel U2D Setting 1 */
+#define MCS_PANU2D2 0xCC90 /* Panel U2D Setting 2 */
+#define MCS_PANU2D3 0xCCA0 /* Panel U2D Setting 3 */
+#define MCS_PAND2U1 0xCCB0 /* Panel D2U Setting 1 */
+#define MCS_PAND2U2 0xCCC0 /* Panel D2U Setting 2 */
+#define MCS_PAND2U3 0xCCD0 /* Panel D2U Setting 3 */
+#define MCS_GOAVST 0xCE80 /* GOA VST Setting */
+#define MCS_GOACLKA1 0xCEA0 /* GOA CLKA1 Setting */
+#define MCS_GOACLKA3 0xCEB0 /* GOA CLKA3 Setting */
+#define MCS_GOAECLK 0xCFC0 /* GOA ECLK Setting */
+#define MCS_NO_DOC2 0xCFD0 /* Command not documented */
+#define MCS_GVDDSET 0xD800 /* GVDD/NGVDD */
+#define MCS_VCOMDC 0xD900 /* VCOM Voltage Setting */
+#define MCS_GMCT2_2P 0xE100 /* Gamma Correction 2.2+ Setting */
+#define MCS_GMCT2_2N 0xE200 /* Gamma Correction 2.2- Setting */
+#define MCS_NO_DOC3 0xF5B6 /* Command not documented */
+#define MCS_CMD2_ENA1 0xFF00 /* Enable Access Command2 "CMD2" */
+#define MCS_CMD2_ENA2 0xFF80 /* Enable Access Orise Command2 */
+
+struct otm8009a_panel_priv {
+ struct udevice *reg;
+ struct gpio_desc reset;
+};
+
+static void otm8009a_dcs_write_buf(struct udevice *dev, const void *data,
+ size_t len)
+{
+ struct mipi_dsi_panel_plat *plat = dev_get_platdata(dev);
+ struct mipi_dsi_device *device = plat->device;
+
+ if (mipi_dsi_dcs_write_buffer(device, data, len) < 0)
+ dev_err(dev, "mipi dsi dcs write buffer failed\n");
+}
+
+#define dcs_write_seq(dev, seq...) \
+({ \
+ static const u8 d[] = { seq }; \
+ otm8009a_dcs_write_buf(dev, d, ARRAY_SIZE(d)); \
+})
+
+#define dcs_write_cmd_at(dev, cmd, seq...) \
+({ \
+ static const u16 c = cmd; \
+ struct udevice *device = dev; \
+ dcs_write_seq(device, MCS_ADRSFT, (c) & 0xFF); \
+ dcs_write_seq(device, (c) >> 8, seq); \
+})
+
+static int otm8009a_init_sequence(struct udevice *dev)
+{
+ struct mipi_dsi_panel_plat *plat = dev_get_platdata(dev);
+ struct mipi_dsi_device *device = plat->device;
+ int ret;
+
+ /* Enter CMD2 */
+ dcs_write_cmd_at(dev, MCS_CMD2_ENA1, 0x80, 0x09, 0x01);
+
+ /* Enter Orise Command2 */
+ dcs_write_cmd_at(dev, MCS_CMD2_ENA2, 0x80, 0x09);
+
+ dcs_write_cmd_at(dev, MCS_SD_PCH_CTRL, 0x30);
+ mdelay(10);
+
+ dcs_write_cmd_at(dev, MCS_NO_DOC1, 0x40);
+ mdelay(10);
+
+ dcs_write_cmd_at(dev, MCS_PWR_CTRL4 + 1, 0xA9);
+ dcs_write_cmd_at(dev, MCS_PWR_CTRL2 + 1, 0x34);
+ dcs_write_cmd_at(dev, MCS_P_DRV_M, 0x50);
+ dcs_write_cmd_at(dev, MCS_VCOMDC, 0x4E);
+ dcs_write_cmd_at(dev, MCS_OSC_ADJ, 0x66); /* 65Hz */
+ dcs_write_cmd_at(dev, MCS_PWR_CTRL2 + 2, 0x01);
+ dcs_write_cmd_at(dev, MCS_PWR_CTRL2 + 5, 0x34);
+ dcs_write_cmd_at(dev, MCS_PWR_CTRL2 + 4, 0x33);
+ dcs_write_cmd_at(dev, MCS_GVDDSET, 0x79, 0x79);
+ dcs_write_cmd_at(dev, MCS_SD_CTRL + 1, 0x1B);
+ dcs_write_cmd_at(dev, MCS_PWR_CTRL1 + 2, 0x83);
+ dcs_write_cmd_at(dev, MCS_SD_PCH_CTRL + 1, 0x83);
+ dcs_write_cmd_at(dev, MCS_RGB_VID_SET, 0x0E);
+ dcs_write_cmd_at(dev, MCS_PANSET, 0x00, 0x01);
+
+ dcs_write_cmd_at(dev, MCS_GOAVST, 0x85, 0x01, 0x00, 0x84, 0x01, 0x00);
+ dcs_write_cmd_at(dev, MCS_GOACLKA1, 0x18, 0x04, 0x03, 0x39, 0x00, 0x00,
+ 0x00, 0x18, 0x03, 0x03, 0x3A, 0x00, 0x00, 0x00);
+ dcs_write_cmd_at(dev, MCS_GOACLKA3, 0x18, 0x02, 0x03, 0x3B, 0x00, 0x00,
+ 0x00, 0x18, 0x01, 0x03, 0x3C, 0x00, 0x00, 0x00);
+ dcs_write_cmd_at(dev, MCS_GOAECLK, 0x01, 0x01, 0x20, 0x20, 0x00, 0x00,
+ 0x01, 0x02, 0x00, 0x00);
+
+ dcs_write_cmd_at(dev, MCS_NO_DOC2, 0x00);
+
+ dcs_write_cmd_at(dev, MCS_PANCTRLSET1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0);
+ dcs_write_cmd_at(dev, MCS_PANCTRLSET2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0);
+ dcs_write_cmd_at(dev, MCS_PANCTRLSET3, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0);
+ dcs_write_cmd_at(dev, MCS_PANCTRLSET4, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0);
+ dcs_write_cmd_at(dev, MCS_PANCTRLSET5, 0, 4, 4, 4, 4, 4, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0);
+ dcs_write_cmd_at(dev, MCS_PANCTRLSET6, 0, 0, 0, 0, 0, 0, 4, 4, 4, 4,
+ 4, 0, 0, 0, 0);
+ dcs_write_cmd_at(dev, MCS_PANCTRLSET7, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0);
+ dcs_write_cmd_at(dev, MCS_PANCTRLSET8, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
+ 0xFF, 0xFF, 0xFF, 0xFF, 0xFF);
+
+ dcs_write_cmd_at(dev, MCS_PANU2D1, 0x00, 0x26, 0x09, 0x0B, 0x01, 0x25,
+ 0x00, 0x00, 0x00, 0x00);
+ dcs_write_cmd_at(dev, MCS_PANU2D2, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x26, 0x0A, 0x0C, 0x02);
+ dcs_write_cmd_at(dev, MCS_PANU2D3, 0x25, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00);
+ dcs_write_cmd_at(dev, MCS_PAND2U1, 0x00, 0x25, 0x0C, 0x0A, 0x02, 0x26,
+ 0x00, 0x00, 0x00, 0x00);
+ dcs_write_cmd_at(dev, MCS_PAND2U2, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x25, 0x0B, 0x09, 0x01);
+ dcs_write_cmd_at(dev, MCS_PAND2U3, 0x26, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00);
+
+ dcs_write_cmd_at(dev, MCS_PWR_CTRL1 + 1, 0x66);
+
+ dcs_write_cmd_at(dev, MCS_NO_DOC3, 0x06);
+
+ dcs_write_cmd_at(dev, MCS_GMCT2_2P, 0x00, 0x09, 0x0F, 0x0E, 0x07, 0x10,
+ 0x0B, 0x0A, 0x04, 0x07, 0x0B, 0x08, 0x0F, 0x10, 0x0A,
+ 0x01);
+ dcs_write_cmd_at(dev, MCS_GMCT2_2N, 0x00, 0x09, 0x0F, 0x0E, 0x07, 0x10,
+ 0x0B, 0x0A, 0x04, 0x07, 0x0B, 0x08, 0x0F, 0x10, 0x0A,
+ 0x01);
+
+ /* Exit CMD2 */
+ dcs_write_cmd_at(dev, MCS_CMD2_ENA1, 0xFF, 0xFF, 0xFF);
+
+ ret = mipi_dsi_dcs_nop(device);
+ if (ret)
+ return ret;
+
+ ret = mipi_dsi_dcs_exit_sleep_mode(device);
+ if (ret)
+ return ret;
+
+ /* Wait for sleep out exit */
+ mdelay(120);
+
+ /* Default portrait 480x800 rgb24 */
+ dcs_write_seq(dev, MIPI_DCS_SET_ADDRESS_MODE, 0x00);
+
+ ret = mipi_dsi_dcs_set_column_address(device, 0, 479);
+ if (ret)
+ return ret;
+
+ ret = mipi_dsi_dcs_set_page_address(device, 0, 799);
+ if (ret)
+ return ret;
+
+ /* See otm8009a driver documentation for pixel format descriptions */
+ ret = mipi_dsi_dcs_set_pixel_format(device, MIPI_DCS_PIXEL_FMT_24BIT |
+ MIPI_DCS_PIXEL_FMT_24BIT << 4);
+ if (ret)
+ return ret;
+
+ /* Disable CABC feature */
+ dcs_write_seq(dev, MIPI_DCS_WRITE_POWER_SAVE, 0x00);
+
+ ret = mipi_dsi_dcs_set_display_on(device);
+ if (ret)
+ return ret;
+
+ ret = mipi_dsi_dcs_nop(device);
+ if (ret)
+ return ret;
+
+ /* Send Command GRAM memory write (no parameters) */
+ dcs_write_seq(dev, MIPI_DCS_WRITE_MEMORY_START);
+
+ return 0;
+}
+
+static int otm8009a_panel_enable_backlight(struct udevice *dev)
+{
+ struct mipi_dsi_panel_plat *plat = dev_get_platdata(dev);
+ struct mipi_dsi_device *device = plat->device;
+ int ret;
+
+ device->lanes = 2;
+ device->format = MIPI_DSI_FMT_RGB888;
+ device->mode_flags = MIPI_DSI_MODE_VIDEO |
+ MIPI_DSI_MODE_VIDEO_BURST |
+ MIPI_DSI_MODE_LPM;
+
+ ret = mipi_dsi_attach(device);
+ if (ret < 0)
+ return ret;
+
+ dev_err(dev, "initialize panel\n");
+ ret = otm8009a_init_sequence(dev);
+ if (ret)
+ return ret;
+
+ /*
+ * Power on the backlight with the requested brightness
+ * Note We can not use mipi_dsi_dcs_set_display_brightness()
+ * as otm8009a driver support only 8-bit brightness (1 param).
+ */
+ dev_err(dev, "start, backlight\n");
+
+ dcs_write_seq(dev, MIPI_DCS_SET_DISPLAY_BRIGHTNESS,
+ OTM8009A_BACKLIGHT_DEFAULT);
+
+ /* Update Brightness Control & Backlight */
+ dcs_write_seq(dev, MIPI_DCS_WRITE_CONTROL_DISPLAY, 0x24);
+
+ /* need to wait a few time before set the DSI bridge in video mode */
+ mdelay(10);
+
+ return 0;
+}
+
+static int otm8009a_panel_ofdata_to_platdata(struct udevice *dev)
+{
+ struct otm8009a_panel_priv *priv = dev_get_priv(dev);
+ int ret;
+
+ if (IS_ENABLED(CONFIG_DM_REGULATOR)) {
+ ret = uclass_get_device_by_phandle(UCLASS_REGULATOR, dev,
+ "power-supply", &priv->reg);
+ if (ret) {
+ dev_err(dev, "Warning: cannot get power supply\n");
+ if (ret != -ENOENT)
+ return ret;
+ }
+ }
+
+ ret = gpio_request_by_name(dev, "reset-gpios", 0, &priv->reset,
+ GPIOD_IS_OUT);
+ if (ret) {
+ dev_err(dev, "warning: cannot get reset GPIO\n");
+ if (ret != -ENOENT)
+ return ret;
+ }
+
+ return 0;
+}
+
+static int otm8009a_panel_probe(struct udevice *dev)
+{
+ struct otm8009a_panel_priv *priv = dev_get_priv(dev);
+ int ret;
+
+ /* reset panel */
+ dm_gpio_set_value(&priv->reset, true);
+
+ mdelay(1);
+
+ if (IS_ENABLED(CONFIG_DM_REGULATOR) && priv->reg) {
+ dev_err(dev, "enable regulator '%s'\n", priv->reg->name);
+ ret = regulator_set_enable(priv->reg, true);
+ if (ret)
+ return ret;
+ }
+
+ dm_gpio_set_value(&priv->reset, false);
+
+ return 0;
+}
+
+static const struct panel_ops otm8009a_panel_ops = {
+ .enable_backlight = otm8009a_panel_enable_backlight,
+};
+
+static const struct udevice_id otm8009a_panel_ids[] = {
+ { .compatible = "orisetech,otm8009a" },
+ { }
+};
+
+U_BOOT_DRIVER(otm8009a_panel) = {
+ .name = "otm8009a_panel",
+ .id = UCLASS_PANEL,
+ .of_match = otm8009a_panel_ids,
+ .ops = &otm8009a_panel_ops,
+ .ofdata_to_platdata = otm8009a_panel_ofdata_to_platdata,
+ .probe = otm8009a_panel_probe,
+ .platdata_auto_alloc_size = sizeof(struct mipi_dsi_panel_plat),
+ .priv_auto_alloc_size = sizeof(struct otm8009a_panel_priv),
+};
--
1.9.1

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