Support for Raydium RM68200 720p dsi 2dl video mode panel. This rm68200 panel driver is based on the Linux Kernel driver from drivers/gpu/drm/panel/panel-raydium-rm68200.c.
Signed-off-by: Yannick Fertré yannick.fertre@st.com --- drivers/video/Kconfig | 8 + drivers/video/Makefile | 1 + drivers/video/raydium-rm68200.c | 338 ++++++++++++++++++++++++++++++++++++++++ 3 files changed, 347 insertions(+) create mode 100644 drivers/video/raydium-rm68200.c
diff --git a/drivers/video/Kconfig b/drivers/video/Kconfig index 8a168c8..e1029e5 100644 --- a/drivers/video/Kconfig +++ b/drivers/video/Kconfig @@ -337,6 +337,14 @@ 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 b9d7d81..018343f 100644 --- a/drivers/video/Makefile +++ b/drivers/video/Makefile @@ -36,6 +36,7 @@ obj-$(CONFIG_VIDEO_EFI) += efi.o obj-$(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..b0b10c1 --- /dev/null +++ b/drivers/video/raydium-rm68200.c @@ -0,0 +1,338 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Copyright (C) 2018 STMicroelectronics - All Rights Reserved + * Author(s): Yannick Fertre yannick.fertre@st.com for STMicroelectronics. + * Philippe Cornu philippe.cornu@st.com for STMicroelectronics. + * + * This rm68200 panel driver is inspired from the Linux Kernel driver + * drivers/gpu/drm/panel/panel-raydium-rm68200.c. + */ +#include <common.h> +#include <backlight.h> +#include <dm.h> +#include <mipi_display.h> +#include <panel.h> +#include <asm/gpio.h> +#include <power/regulator.h> + +/*** 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 const struct display_timing default_timing = { + .pixelclock.typ = 52582000, + .hactive.typ = 720, + .hfront_porch.typ = 38, + .hback_porch.typ = 8, + .hsync_len.typ = 38, + .vactive.typ = 1280, + .vfront_porch.typ = 12, + .vback_porch.typ = 4, + .vsync_len.typ = 12, +}; + +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; + + 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); + + ret = backlight_enable(priv->backlight); + if (ret) + return ret; + + return 0; +} + +static int rm68200_panel_get_display_timing(struct udevice *dev, + struct display_timing *timings) +{ + memcpy(timings, &default_timing, sizeof(*timings)); + 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 = device_get_supply_regulator(dev, "power-supply", + &priv->reg); + if (ret && ret != -ENOENT) { + dev_err(dev, "Warning: cannot get power supply\n"); + 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; + } + + ret = uclass_get_device_by_phandle(UCLASS_PANEL_BACKLIGHT, dev, + "backlight", &priv->backlight); + if (ret) { + dev_err(dev, "Cannot get backlight: ret=%d\n", ret); + return ret; + } + + return 0; +} + +static int rm68200_panel_probe(struct udevice *dev) +{ + struct rm68200_panel_priv *priv = dev_get_priv(dev); + int ret; + + if (IS_ENABLED(CONFIG_DM_REGULATOR) && priv->reg) { + ret = regulator_set_enable(priv->reg, true); + if (ret) + return ret; + } + + /* reset panel */ + dm_gpio_set_value(&priv->reset, true); + mdelay(1); + dm_gpio_set_value(&priv->reset, false); + mdelay(10); + + return 0; +} + +static const struct panel_ops rm68200_panel_ops = { + .enable_backlight = rm68200_panel_enable_backlight, + .get_display_timing = rm68200_panel_get_display_timing, +}; + +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), +};