Support for Raydium rm68200 720p dsi 2dl video mode panel.

Signed-off-by: yannick fertre <yannick.fer...@st.com>
---
 drivers/video/Kconfig           |   8 +
 drivers/video/Makefile          |   1 +
 drivers/video/raydium-rm68200.c | 326 ++++++++++++++++++++++++++++++++++++++++
 3 files changed, 335 insertions(+)
 create mode 100644 drivers/video/raydium-rm68200.c

diff --git a/drivers/video/Kconfig b/drivers/video/Kconfig
index 0f641d7..2561c59 100644
--- a/drivers/video/Kconfig
+++ b/drivers/video/Kconfig
@@ -328,6 +328,14 @@ config VIDEO_LCD_ORISETECH_OTM8009A
        ---help---
        Support for Orise Tech otm8009a 480p dsi 2dl video mode panel.
 
+config VIDEO_LCD_RAYDIUM_RM68200
+       bool "RM68200 DSI LCD panel support"
+       depends on DM_VIDEO
+       select VIDEO_MIPI_DSI
+       default n
+       ---help---
+       Support for Raydium rm68200 720x1280 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 50be569..1a6c8d3 100644
--- a/drivers/video/Makefile
+++ b/drivers/video/Makefile
@@ -38,6 +38,7 @@ 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-$(CONFIG_VIDEO_LCD_RAYDIUM_RM68200) += raydium-rm68200.o
 obj-$(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/raydium-rm68200.c b/drivers/video/raydium-rm68200.c
new file mode 100644
index 0000000..49b22af
--- /dev/null
+++ b/drivers/video/raydium-rm68200.c
@@ -0,0 +1,326 @@
+/*
+ * Copyright (C) 2018 STMicroelectronics - All Rights Reserved
+ * Author(s): Yannick Fertre <yannick.fer...@st.com> for STMicroelectronics.
+ *           Philippe Cornu <philippe.co...@st.com> for STMicroelectronics.
+ *
+ * This rm68200 panel driver is based on the panel driver from
+ * drivers/gpu/drm/panel/panel-raydium-rm68200.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 "raydium_rm68200"
+
+/*** Manufacturer Command Set ***/
+#define MCS_CMD_MODE_SW        0xFE /* CMD Mode Switch */
+#define MCS_CMD1_UCS   0x00 /* User Command Set (UCS = CMD1) */
+#define MCS_CMD2_P0    0x01 /* Manufacture Command Set Page0 (CMD2 P0) */
+#define MCS_CMD2_P1    0x02 /* Manufacture Command Set Page1 (CMD2 P1) */
+#define MCS_CMD2_P2    0x03 /* Manufacture Command Set Page2 (CMD2 P2) */
+#define MCS_CMD2_P3    0x04 /* Manufacture Command Set Page3 (CMD2 P3) */
+
+/* CMD2 P0 commands (Display Options and Power) */
+#define MCS_STBCTR     0x12 /* TE1 Output Setting Zig-Zag Connection */
+#define MCS_SGOPCTR    0x16 /* Source Bias Current */
+#define MCS_SDCTR      0x1A /* Source Output Delay Time */
+#define MCS_INVCTR     0x1B /* Inversion Type */
+#define MCS_EXT_PWR_IC 0x24 /* External PWR IC Control */
+#define MCS_SETAVDD    0x27 /* PFM Control for AVDD Output */
+#define MCS_SETAVEE    0x29 /* PFM Control for AVEE Output */
+#define MCS_BT2CTR     0x2B /* DDVDL Charge Pump Control */
+#define MCS_BT3CTR     0x2F /* VGH Charge Pump Control */
+#define MCS_BT4CTR     0x34 /* VGL Charge Pump Control */
+#define MCS_VCMCTR     0x46 /* VCOM Output Level Control */
+#define MCS_SETVGN     0x52 /* VG M/S N Control */
+#define MCS_SETVGP     0x54 /* VG M/S P Control */
+#define MCS_SW_CTRL    0x5F /* Interface Control for PFM and MIPI */
+
+/* CMD2 P2 commands (GOA Timing Control) - no description in datasheet */
+#define GOA_VSTV1              0x00
+#define GOA_VSTV2              0x07
+#define GOA_VCLK1              0x0E
+#define GOA_VCLK2              0x17
+#define GOA_VCLK_OPT1          0x20
+#define GOA_BICLK1             0x2A
+#define GOA_BICLK2             0x37
+#define GOA_BICLK3             0x44
+#define GOA_BICLK4             0x4F
+#define GOA_BICLK_OPT1         0x5B
+#define GOA_BICLK_OPT2         0x60
+#define MCS_GOA_GPO1           0x6D
+#define MCS_GOA_GPO2           0x71
+#define MCS_GOA_EQ             0x74
+#define MCS_GOA_CLK_GALLON     0x7C
+#define MCS_GOA_FS_SEL0                0x7E
+#define MCS_GOA_FS_SEL1                0x87
+#define MCS_GOA_FS_SEL2                0x91
+#define MCS_GOA_FS_SEL3                0x9B
+#define MCS_GOA_BS_SEL0                0xAC
+#define MCS_GOA_BS_SEL1                0xB5
+#define MCS_GOA_BS_SEL2                0xBF
+#define MCS_GOA_BS_SEL3                0xC9
+#define MCS_GOA_BS_SEL4                0xD3
+
+/* CMD2 P3 commands (Gamma) */
+#define MCS_GAMMA_VP           0x60 /* Gamma VP1~VP16 */
+#define MCS_GAMMA_VN           0x70 /* Gamma VN1~VN16 */
+
+struct rm68200_panel_priv {
+       struct udevice *reg;
+       struct udevice *backlight;
+       struct gpio_desc reset;
+};
+
+static void rm68200_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;
+       int err;
+
+       err = mipi_dsi_dcs_write_buffer(device, data, len);
+       if (err < 0)
+               dev_err(dev, "MIPI DSI DCS write buffer failed: %d\n", err);
+}
+
+static void rm68200_dcs_write_cmd(struct udevice *dev, u8 cmd, u8 value)
+{
+       struct mipi_dsi_panel_plat *plat = dev_get_platdata(dev);
+       struct mipi_dsi_device *device = plat->device;
+       int err;
+
+       err = mipi_dsi_dcs_write(device, cmd, &value, 1);
+       if (err < 0)
+               dev_err(dev, "MIPI DSI DCS write failed: %d\n", err);
+}
+
+#define dcs_write_seq(ctx, seq...)                             \
+({                                                             \
+       static const u8 d[] = { seq };                          \
+                                                               \
+       rm68200_dcs_write_buf(ctx, d, ARRAY_SIZE(d));           \
+})
+
+/*
+ * This panel is not able to auto-increment all cmd addresses so for some of
+ * them, we need to send them one by one...
+ */
+#define dcs_write_cmd_seq(ctx, cmd, seq...)                    \
+({                                                             \
+       static const u8 d[] = { seq };                          \
+       unsigned int i;                                         \
+                                                               \
+       for (i = 0; i < ARRAY_SIZE(d) ; i++)                    \
+               rm68200_dcs_write_cmd(ctx, cmd + i, d[i]);      \
+})
+
+static void rm68200_init_sequence(struct udevice *dev)
+{
+       /* Enter CMD2 with page 0 */
+       dcs_write_seq(dev, MCS_CMD_MODE_SW, MCS_CMD2_P0);
+       dcs_write_cmd_seq(dev, MCS_EXT_PWR_IC, 0xC0, 0x53, 0x00);
+       dcs_write_seq(dev, MCS_BT2CTR, 0xE5);
+       dcs_write_seq(dev, MCS_SETAVDD, 0x0A);
+       dcs_write_seq(dev, MCS_SETAVEE, 0x0A);
+       dcs_write_seq(dev, MCS_SGOPCTR, 0x52);
+       dcs_write_seq(dev, MCS_BT3CTR, 0x53);
+       dcs_write_seq(dev, MCS_BT4CTR, 0x5A);
+       dcs_write_seq(dev, MCS_INVCTR, 0x00);
+       dcs_write_seq(dev, MCS_STBCTR, 0x0A);
+       dcs_write_seq(dev, MCS_SDCTR, 0x06);
+       dcs_write_seq(dev, MCS_VCMCTR, 0x56);
+       dcs_write_seq(dev, MCS_SETVGN, 0xA0, 0x00);
+       dcs_write_seq(dev, MCS_SETVGP, 0xA0, 0x00);
+       dcs_write_seq(dev, MCS_SW_CTRL, 0x11); /* 2 data lanes, see doc */
+
+       dcs_write_seq(dev, MCS_CMD_MODE_SW, MCS_CMD2_P2);
+       dcs_write_seq(dev, GOA_VSTV1, 0x05);
+       dcs_write_seq(dev, 0x02, 0x0B);
+       dcs_write_seq(dev, 0x03, 0x0F);
+       dcs_write_seq(dev, 0x04, 0x7D, 0x00, 0x50);
+       dcs_write_cmd_seq(dev, GOA_VSTV2, 0x05, 0x16, 0x0D, 0x11, 0x7D, 0x00,
+                         0x50);
+       dcs_write_cmd_seq(dev, GOA_VCLK1, 0x07, 0x08, 0x01, 0x02, 0x00, 0x7D,
+                         0x00, 0x85, 0x08);
+       dcs_write_cmd_seq(dev, GOA_VCLK2, 0x03, 0x04, 0x05, 0x06, 0x00, 0x7D,
+                         0x00, 0x85, 0x08);
+       dcs_write_seq(dev, GOA_VCLK_OPT1, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+                     0x00, 0x00, 0x00, 0x00);
+       dcs_write_cmd_seq(dev, GOA_BICLK1, 0x07, 0x08);
+       dcs_write_seq(dev, 0x2D, 0x01);
+       dcs_write_seq(dev, 0x2F, 0x02, 0x00, 0x40, 0x05, 0x08, 0x54, 0x7D,
+                     0x00);
+       dcs_write_cmd_seq(dev, GOA_BICLK2, 0x03, 0x04, 0x05, 0x06, 0x00);
+       dcs_write_seq(dev, 0x3D, 0x40);
+       dcs_write_seq(dev, 0x3F, 0x05, 0x08, 0x54, 0x7D, 0x00);
+       dcs_write_seq(dev, GOA_BICLK3, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+                     0x00, 0x00, 0x00, 0x00, 0x00);
+       dcs_write_seq(dev, GOA_BICLK4, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+                     0x00, 0x00);
+       dcs_write_seq(dev, 0x58, 0x00, 0x00, 0x00);
+       dcs_write_seq(dev, GOA_BICLK_OPT1, 0x00, 0x00, 0x00, 0x00, 0x00);
+       dcs_write_seq(dev, GOA_BICLK_OPT2, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+                     0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00);
+       dcs_write_seq(dev, MCS_GOA_GPO1, 0x00, 0x00, 0x00, 0x00);
+       dcs_write_seq(dev, MCS_GOA_GPO2, 0x00, 0x20, 0x00);
+       dcs_write_seq(dev, MCS_GOA_EQ, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08,
+                     0x00, 0x00);
+       dcs_write_seq(dev, MCS_GOA_CLK_GALLON, 0x00, 0x00);
+       dcs_write_cmd_seq(dev, MCS_GOA_FS_SEL0, 0xBF, 0x02, 0x06, 0x14, 0x10,
+                         0x16, 0x12, 0x08, 0x3F);
+       dcs_write_cmd_seq(dev, MCS_GOA_FS_SEL1, 0x3F, 0x3F, 0x3F, 0x3F, 0x0C,
+                         0x0A, 0x0E, 0x3F, 0x3F, 0x00);
+       dcs_write_cmd_seq(dev, MCS_GOA_FS_SEL2, 0x04, 0x3F, 0x3F, 0x3F, 0x3F,
+                         0x05, 0x01, 0x3F, 0x3F, 0x0F);
+       dcs_write_cmd_seq(dev, MCS_GOA_FS_SEL3, 0x0B, 0x0D, 0x3F, 0x3F, 0x3F,
+                         0x3F);
+       dcs_write_cmd_seq(dev, 0xA2, 0x3F, 0x09, 0x13, 0x17, 0x11, 0x15);
+       dcs_write_cmd_seq(dev, 0xA9, 0x07, 0x03, 0x3F);
+       dcs_write_cmd_seq(dev, MCS_GOA_BS_SEL0, 0x3F, 0x05, 0x01, 0x17, 0x13,
+                         0x15, 0x11, 0x0F, 0x3F);
+       dcs_write_cmd_seq(dev, MCS_GOA_BS_SEL1, 0x3F, 0x3F, 0x3F, 0x3F, 0x0B,
+                         0x0D, 0x09, 0x3F, 0x3F, 0x07);
+       dcs_write_cmd_seq(dev, MCS_GOA_BS_SEL2, 0x03, 0x3F, 0x3F, 0x3F, 0x3F,
+                         0x02, 0x06, 0x3F, 0x3F, 0x08);
+       dcs_write_cmd_seq(dev, MCS_GOA_BS_SEL3, 0x0C, 0x0A, 0x3F, 0x3F, 0x3F,
+                         0x3F, 0x3F, 0x0E, 0x10, 0x14);
+       dcs_write_cmd_seq(dev, MCS_GOA_BS_SEL4, 0x12, 0x16, 0x00, 0x04, 0x3F);
+       dcs_write_seq(dev, 0xDC, 0x02);
+       dcs_write_seq(dev, 0xDE, 0x12);
+
+       dcs_write_seq(dev, MCS_CMD_MODE_SW, 0x0E); /* No documentation */
+       dcs_write_seq(dev, 0x01, 0x75);
+
+       dcs_write_seq(dev, MCS_CMD_MODE_SW, MCS_CMD2_P3);
+       dcs_write_cmd_seq(dev, MCS_GAMMA_VP, 0x00, 0x0C, 0x12, 0x0E, 0x06,
+                         0x12, 0x0E, 0x0B, 0x15, 0x0B, 0x10, 0x07, 0x0F,
+                         0x12, 0x0C, 0x00);
+       dcs_write_cmd_seq(dev, MCS_GAMMA_VN, 0x00, 0x0C, 0x12, 0x0E, 0x06,
+                         0x12, 0x0E, 0x0B, 0x15, 0x0B, 0x10, 0x07, 0x0F,
+                         0x12, 0x0C, 0x00);
+
+       /* Exit CMD2 */
+       dcs_write_seq(dev, MCS_CMD_MODE_SW, MCS_CMD1_UCS);
+}
+
+static int rm68200_panel_enable_backlight(struct udevice *dev)
+{
+       struct mipi_dsi_panel_plat *plat = dev_get_platdata(dev);
+       struct mipi_dsi_device *device = plat->device;
+       struct rm68200_panel_priv *priv = dev_get_priv(dev);
+       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_info(dev, "initialize panel\n");
+
+       rm68200_init_sequence(dev);
+
+       ret = mipi_dsi_dcs_exit_sleep_mode(device);
+       if (ret)
+               return ret;
+
+       mdelay(125);
+
+       ret = mipi_dsi_dcs_set_display_on(device);
+       if (ret)
+               return ret;
+
+       mdelay(20);
+
+       dev_info("start, backlight = '%s'\n", priv->backlight->name);
+
+       ret = backlight_enable(priv->backlight);
+       if (ret)
+               return ret;
+
+       return 0;
+}
+
+static int rm68200_panel_ofdata_to_platdata(struct udevice *dev)
+{
+       struct rm68200_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 rm68200_panel_probe(struct udevice *dev)
+{
+       struct rm68200_panel_priv *priv = dev_get_priv(dev);
+       int ret;
+
+       /* reset panel */
+       dm_gpio_set_value(&priv->reset, true);
+
+       if (IS_ENABLED(CONFIG_DM_REGULATOR) && priv->reg) {
+               dev_info("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);
+
+       ret = uclass_get_device_by_phandle(UCLASS_PANEL_BACKLIGHT, dev,
+                                          "backlight", &priv->backlight);
+       if (ret) {
+               dev_info(dev, "Cannot get backlight: ret=%d\n", ret);
+               return ret;
+       }
+
+       return 0;
+}
+
+static const struct panel_ops rm68200_panel_ops = {
+       .enable_backlight = rm68200_panel_enable_backlight,
+};
+
+static const struct udevice_id rm68200_panel_ids[] = {
+       { .compatible = "raydium,rm68200" },
+       { }
+};
+
+U_BOOT_DRIVER(rm68200_panel) = {
+       .name                     = "rm68200_panel",
+       .id                       = UCLASS_PANEL,
+       .of_match                 = rm68200_panel_ids,
+       .ops                      = &rm68200_panel_ops,
+       .ofdata_to_platdata       = rm68200_panel_ofdata_to_platdata,
+       .probe                    = rm68200_panel_probe,
+       .platdata_auto_alloc_size = sizeof(struct mipi_dsi_panel_plat),
+       .priv_auto_alloc_size   = sizeof(struct rm68200_panel_priv),
+};
-- 
1.9.1

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