This panel has been tested with the RK3566 VOP2 MIPI-DSI on the Powkiddy RGB30. Support for MIPI-DSI on Rockchip is not upstream yet, but the panel can be used with other MIPI-DSI controllers as well.
Signed-off-by: Ahmad Fatoum <[email protected]> --- drivers/video/Kconfig | 13 + drivers/video/Makefile | 1 + drivers/video/panel-sitronix-st7703.c | 903 ++++++++++++++++++++++++++ 3 files changed, 917 insertions(+) create mode 100644 drivers/video/panel-sitronix-st7703.c diff --git a/drivers/video/Kconfig b/drivers/video/Kconfig index b2eccd5db7fe..4605634bb581 100644 --- a/drivers/video/Kconfig +++ b/drivers/video/Kconfig @@ -202,6 +202,19 @@ config DRIVER_VIDEO_PANEL_SITRONIX_ST7789V Say Y here if you want to enable support for the Sitronix ST7789V controller for 240x320 LCD panels +config DRIVER_VIDEO_PANEL_SITRONIX_ST7703 + tristate "Sitronix ST7703 based MIPI touchscreen panels" + depends on OF + depends on DRIVER_VIDEO_MIPI_DSI + depends on DRIVER_VIDEO_BACKLIGHT + help + Say Y here if you want to enable support for Sitronix ST7703 based + panels, souch as Rocktech JH057N00900 MIPI DSI panel as e.g. used in + the Librem 5 devkit. It has a resolution of 720x1440 pixels, a built + in backlight and touch controller. + Touch input support is provided by the goodix driver and needs to be + selected separately. + config DRIVER_VIDEO_PANEL_ORISETECH_OTM8009A tristate "Orise Technology otm8009a 480x800 dsi 2dl panel" depends on OF diff --git a/drivers/video/Makefile b/drivers/video/Makefile index 470a5abaa450..8dfebe2be6a2 100644 --- a/drivers/video/Makefile +++ b/drivers/video/Makefile @@ -15,6 +15,7 @@ obj-$(CONFIG_DRIVER_VIDEO_MIPI_DSI) += mipi_dsi.o obj-$(CONFIG_DRIVER_VIDEO_PANEL_ILITEK_ILI9341) += panel-ilitek-ili9341.o obj-$(CONFIG_DRIVER_VIDEO_PANEL_MIPI_DBI) += panel-mipi-dbi.o obj-$(CONFIG_DRIVER_VIDEO_PANEL_SITRONIX_ST7789V) += panel-sitronix-st7789v.o +obj-$(CONFIG_DRIVER_VIDEO_PANEL_SITRONIX_ST7703) += panel-sitronix-st7703.o obj-$(CONFIG_DRIVER_VIDEO_PANEL_ORISETECH_OTM8009A) += panel-orisetech-otm8009a.o obj-$(CONFIG_DRIVER_VIDEO_ATMEL) += atmel_lcdfb.o atmel_lcdfb_core.o diff --git a/drivers/video/panel-sitronix-st7703.c b/drivers/video/panel-sitronix-st7703.c new file mode 100644 index 000000000000..a1c87c74bb6d --- /dev/null +++ b/drivers/video/panel-sitronix-st7703.c @@ -0,0 +1,903 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Driver for panels based on Sitronix ST7703 controller, souch as: + * + * - Rocktech jh057n00900 5.5" MIPI-DSI panel + * + * Copyright (C) Purism SPC 2019 + */ + +#include <clock.h> +#include <linux/gpio/consumer.h> +#include <video/media-bus-format.h> +#include <linux/mod_devicetable.h> +#include <linux/module.h> +#include <of.h> +#include <of_device.h> +#include <regulator.h> + +#include <video/vpl.h> +#include <video/mipi_display.h> +#include <video/mipi_dsi.h> +#include <video/drm/drm_modes.h> +#include <video/drm/drm_connector.h> +#include <video/videomode.h> +#include <video/backlight.h> + +#define DRV_NAME "panel-sitronix-st7703" + +/* Manufacturer specific Commands send via DSI */ +#define ST7703_CMD_ALL_PIXEL_OFF 0x22 +#define ST7703_CMD_ALL_PIXEL_ON 0x23 +#define ST7703_CMD_SETAPID 0xB1 +#define ST7703_CMD_SETDISP 0xB2 +#define ST7703_CMD_SETRGBIF 0xB3 +#define ST7703_CMD_SETCYC 0xB4 +#define ST7703_CMD_SETBGP 0xB5 +#define ST7703_CMD_SETVCOM 0xB6 +#define ST7703_CMD_SETOTP 0xB7 +#define ST7703_CMD_SETPOWER_EXT 0xB8 +#define ST7703_CMD_SETEXTC 0xB9 +#define ST7703_CMD_SETMIPI 0xBA +#define ST7703_CMD_SETVDC 0xBC +#define ST7703_CMD_UNKNOWN_BF 0xBF +#define ST7703_CMD_SETSCR 0xC0 +#define ST7703_CMD_SETPOWER 0xC1 +#define ST7703_CMD_SETECO 0xC6 +#define ST7703_CMD_SETIO 0xC7 +#define ST7703_CMD_SETCABC 0xC8 +#define ST7703_CMD_SETPANEL 0xCC +#define ST7703_CMD_SETGAMMA 0xE0 +#define ST7703_CMD_SETEQ 0xE3 +#define ST7703_CMD_SETGIP1 0xE9 +#define ST7703_CMD_SETGIP2 0xEA +#define ST7703_CMD_UNKNOWN_EF 0xEF + +struct st7703 { + struct device *dev; + struct vpl vpl; + struct gpio_desc *reset_gpio; + struct regulator *vcc; + struct regulator *iovcc; + struct backlight_device *backlight; + + const struct st7703_panel_desc *desc; + int allpixelson; +}; + +struct st7703_panel_desc { + const struct drm_display_mode *mode; + unsigned int lanes; + unsigned long mode_flags; + enum mipi_dsi_pixel_format format; + void (*init_sequence)(struct mipi_dsi_multi_context *dsi_ctx); +}; + +static void jh057n_init_sequence(struct mipi_dsi_multi_context *dsi_ctx) +{ + /* + * Init sequence was supplied by the panel vendor. Most of the commands + * resemble the ST7703 but the number of parameters often don't match + * so it's likely a clone. + */ + mipi_dsi_generic_write_seq_multi(dsi_ctx, ST7703_CMD_SETEXTC, + 0xF1, 0x12, 0x83); + mipi_dsi_generic_write_seq_multi(dsi_ctx, ST7703_CMD_SETRGBIF, + 0x10, 0x10, 0x05, 0x05, 0x03, 0xFF, 0x00, 0x00, + 0x00, 0x00); + mipi_dsi_generic_write_seq_multi(dsi_ctx, ST7703_CMD_SETSCR, + 0x73, 0x73, 0x50, 0x50, 0x00, 0x00, 0x08, 0x70, + 0x00); + mipi_dsi_generic_write_seq_multi(dsi_ctx, ST7703_CMD_SETVDC, 0x4E); + mipi_dsi_generic_write_seq_multi(dsi_ctx, ST7703_CMD_SETPANEL, 0x0B); + mipi_dsi_generic_write_seq_multi(dsi_ctx, ST7703_CMD_SETCYC, 0x80); + mipi_dsi_generic_write_seq_multi(dsi_ctx, ST7703_CMD_SETDISP, 0xF0, 0x12, 0x30); + mipi_dsi_generic_write_seq_multi(dsi_ctx, ST7703_CMD_SETEQ, + 0x07, 0x07, 0x0B, 0x0B, 0x03, 0x0B, 0x00, 0x00, + 0x00, 0x00, 0xFF, 0x00, 0xC0, 0x10); + mipi_dsi_generic_write_seq_multi(dsi_ctx, ST7703_CMD_SETBGP, 0x08, 0x08); + mipi_dsi_mdelay(dsi_ctx, 20); + + mipi_dsi_generic_write_seq_multi(dsi_ctx, ST7703_CMD_SETVCOM, 0x3F, 0x3F); + mipi_dsi_generic_write_seq_multi(dsi_ctx, ST7703_CMD_UNKNOWN_BF, 0x02, 0x11, 0x00); + mipi_dsi_generic_write_seq_multi(dsi_ctx, ST7703_CMD_SETGIP1, + 0x82, 0x10, 0x06, 0x05, 0x9E, 0x0A, 0xA5, 0x12, + 0x31, 0x23, 0x37, 0x83, 0x04, 0xBC, 0x27, 0x38, + 0x0C, 0x00, 0x03, 0x00, 0x00, 0x00, 0x0C, 0x00, + 0x03, 0x00, 0x00, 0x00, 0x75, 0x75, 0x31, 0x88, + 0x88, 0x88, 0x88, 0x88, 0x88, 0x13, 0x88, 0x64, + 0x64, 0x20, 0x88, 0x88, 0x88, 0x88, 0x88, 0x88, + 0x02, 0x88, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00); + mipi_dsi_generic_write_seq_multi(dsi_ctx, ST7703_CMD_SETGIP2, + 0x02, 0x21, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x02, 0x46, 0x02, 0x88, + 0x88, 0x88, 0x88, 0x88, 0x88, 0x64, 0x88, 0x13, + 0x57, 0x13, 0x88, 0x88, 0x88, 0x88, 0x88, 0x88, + 0x75, 0x88, 0x23, 0x14, 0x00, 0x00, 0x02, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x30, 0x0A, + 0xA5, 0x00, 0x00, 0x00, 0x00); + mipi_dsi_generic_write_seq_multi(dsi_ctx, ST7703_CMD_SETGAMMA, + 0x00, 0x09, 0x0E, 0x29, 0x2D, 0x3C, 0x41, 0x37, + 0x07, 0x0B, 0x0D, 0x10, 0x11, 0x0F, 0x10, 0x11, + 0x18, 0x00, 0x09, 0x0E, 0x29, 0x2D, 0x3C, 0x41, + 0x37, 0x07, 0x0B, 0x0D, 0x10, 0x11, 0x0F, 0x10, + 0x11, 0x18); + mipi_dsi_mdelay(dsi_ctx, 20); +} + +static const struct drm_display_mode jh057n00900_mode = { + .hdisplay = 720, + .hsync_start = 720 + 90, + .hsync_end = 720 + 90 + 20, + .htotal = 720 + 90 + 20 + 20, + .vdisplay = 1440, + .vsync_start = 1440 + 20, + .vsync_end = 1440 + 20 + 4, + .vtotal = 1440 + 20 + 4 + 12, + .clock = 75276, + .flags = DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC, + .width_mm = 65, + .height_mm = 130, +}; + +static const struct st7703_panel_desc jh057n00900_panel_desc = { + .mode = &jh057n00900_mode, + .lanes = 4, + .mode_flags = MIPI_DSI_MODE_VIDEO | + MIPI_DSI_MODE_VIDEO_BURST | MIPI_DSI_MODE_VIDEO_SYNC_PULSE, + .format = MIPI_DSI_FMT_RGB888, + .init_sequence = jh057n_init_sequence, +}; + +static void xbd599_init_sequence(struct mipi_dsi_multi_context *dsi_ctx) +{ + /* + * Init sequence was supplied by the panel vendor. + */ + + /* Magic sequence to unlock user commands below. */ + mipi_dsi_dcs_write_seq_multi(dsi_ctx, ST7703_CMD_SETEXTC, 0xF1, 0x12, 0x83); + + mipi_dsi_dcs_write_seq_multi(dsi_ctx, ST7703_CMD_SETMIPI, + 0x33, /* VC_main = 0, Lane_Number = 3 (4 lanes) */ + 0x81, /* DSI_LDO_SEL = 1.7V, RTERM = 90 Ohm */ + 0x05, /* IHSRX = x6 (Low High Speed driving ability) */ + 0xF9, /* TX_CLK_SEL = fDSICLK/16 */ + 0x0E, /* HFP_OSC (min. HFP number in DSI mode) */ + 0x0E, /* HBP_OSC (min. HBP number in DSI mode) */ + /* The rest is undocumented in ST7703 datasheet */ + 0x20, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x44, 0x25, 0x00, 0x91, 0x0a, 0x00, 0x00, 0x02, + 0x4F, 0x11, 0x00, 0x00, 0x37); + + mipi_dsi_dcs_write_seq_multi(dsi_ctx, ST7703_CMD_SETPOWER_EXT, + 0x25, /* PCCS = 2, ECP_DC_DIV = 1/4 HSYNC */ + 0x22, /* DT = 15ms XDK_ECP = x2 */ + 0x20, /* PFM_DC_DIV = /1 */ + 0x03 /* ECP_SYNC_EN = 1, VGX_SYNC_EN = 1 */); + + /* RGB I/F porch timing */ + mipi_dsi_dcs_write_seq_multi(dsi_ctx, ST7703_CMD_SETRGBIF, + 0x10, /* VBP_RGB_GEN */ + 0x10, /* VFP_RGB_GEN */ + 0x05, /* DE_BP_RGB_GEN */ + 0x05, /* DE_FP_RGB_GEN */ + /* The rest is undocumented in ST7703 datasheet */ + 0x03, 0xFF, + 0x00, 0x00, + 0x00, 0x00); + + /* Source driving settings. */ + mipi_dsi_dcs_write_seq_multi(dsi_ctx, ST7703_CMD_SETSCR, + 0x73, /* N_POPON */ + 0x73, /* N_NOPON */ + 0x50, /* I_POPON */ + 0x50, /* I_NOPON */ + 0x00, /* SCR[31,24] */ + 0xC0, /* SCR[23,16] */ + 0x08, /* SCR[15,8] */ + 0x70, /* SCR[7,0] */ + 0x00 /* Undocumented */); + + /* NVDDD_SEL = -1.8V, VDDD_SEL = out of range (possibly 1.9V?) */ + mipi_dsi_dcs_write_seq_multi(dsi_ctx, ST7703_CMD_SETVDC, 0x4E); + + /* + * SS_PANEL = 1 (reverse scan), GS_PANEL = 0 (normal scan) + * REV_PANEL = 1 (normally black panel), BGR_PANEL = 1 (BGR) + */ + mipi_dsi_dcs_write_seq_multi(dsi_ctx, ST7703_CMD_SETPANEL, 0x0B); + + /* Zig-Zag Type C column inversion. */ + mipi_dsi_dcs_write_seq_multi(dsi_ctx, ST7703_CMD_SETCYC, 0x80); + + /* Set display resolution. */ + mipi_dsi_dcs_write_seq_multi(dsi_ctx, ST7703_CMD_SETDISP, + 0xF0, /* NL = 240 */ + 0x12, /* RES_V_LSB = 0, BLK_CON = VSSD, + * RESO_SEL = 720RGB + */ + 0xF0 /* WHITE_GND_EN = 1 (GND), + * WHITE_FRAME_SEL = 7 frames, + * ISC = 0 frames + */); + + mipi_dsi_dcs_write_seq_multi(dsi_ctx, ST7703_CMD_SETEQ, + 0x00, /* PNOEQ */ + 0x00, /* NNOEQ */ + 0x0B, /* PEQGND */ + 0x0B, /* NEQGND */ + 0x10, /* PEQVCI */ + 0x10, /* NEQVCI */ + 0x00, /* PEQVCI1 */ + 0x00, /* NEQVCI1 */ + 0x00, /* reserved */ + 0x00, /* reserved */ + 0xFF, /* reserved */ + 0x00, /* reserved */ + 0xC0, /* ESD_DET_DATA_WHITE = 1, ESD_WHITE_EN = 1 */ + 0x10 /* SLPIN_OPTION = 1 (no need vsync after sleep-in) + * VEDIO_NO_CHECK_EN = 0 + * ESD_WHITE_GND_EN = 0 + * ESD_DET_TIME_SEL = 0 frames + */); + + mipi_dsi_dcs_write_seq_multi(dsi_ctx, ST7703_CMD_SETECO, 0x01, 0x00, 0xFF, 0xFF, 0x00); + + mipi_dsi_dcs_write_seq_multi(dsi_ctx, ST7703_CMD_SETPOWER, + 0x74, /* VBTHS, VBTLS: VGH = 17V, VBL = -11V */ + 0x00, /* FBOFF_VGH = 0, FBOFF_VGL = 0 */ + 0x32, /* VRP */ + 0x32, /* VRN */ + 0x77, /* reserved */ + 0xF1, /* APS = 1 (small), + * VGL_DET_EN = 1, VGH_DET_EN = 1, + * VGL_TURBO = 1, VGH_TURBO = 1 + */ + 0xFF, /* VGH1_L_DIV, VGL1_L_DIV (1.5MHz) */ + 0xFF, /* VGH1_R_DIV, VGL1_R_DIV (1.5MHz) */ + 0xCC, /* VGH2_L_DIV, VGL2_L_DIV (2.6MHz) */ + 0xCC, /* VGH2_R_DIV, VGL2_R_DIV (2.6MHz) */ + 0x77, /* VGH3_L_DIV, VGL3_L_DIV (4.5MHz) */ + 0x77 /* VGH3_R_DIV, VGL3_R_DIV (4.5MHz) */); + + /* Reference voltage. */ + mipi_dsi_dcs_write_seq_multi(dsi_ctx, ST7703_CMD_SETBGP, + 0x07, /* VREF_SEL = 4.2V */ + 0x07 /* NVREF_SEL = 4.2V */); + + mipi_dsi_dcs_write_seq_multi(dsi_ctx, ST7703_CMD_SETVCOM, + 0x2C, /* VCOMDC_F = -0.67V */ + 0x2C /* VCOMDC_B = -0.67V */); + + /* Undocumented command. */ + mipi_dsi_dcs_write_seq_multi(dsi_ctx, ST7703_CMD_UNKNOWN_BF, 0x02, 0x11, 0x00); + + /* This command is to set forward GIP timing. */ + mipi_dsi_dcs_write_seq_multi(dsi_ctx, ST7703_CMD_SETGIP1, + 0x82, 0x10, 0x06, 0x05, 0xA2, 0x0A, 0xA5, 0x12, + 0x31, 0x23, 0x37, 0x83, 0x04, 0xBC, 0x27, 0x38, + 0x0C, 0x00, 0x03, 0x00, 0x00, 0x00, 0x0C, 0x00, + 0x03, 0x00, 0x00, 0x00, 0x75, 0x75, 0x31, 0x88, + 0x88, 0x88, 0x88, 0x88, 0x88, 0x13, 0x88, 0x64, + 0x64, 0x20, 0x88, 0x88, 0x88, 0x88, 0x88, 0x88, + 0x02, 0x88, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00); + + /* This command is to set backward GIP timing. */ + mipi_dsi_dcs_write_seq_multi(dsi_ctx, ST7703_CMD_SETGIP2, + 0x02, 0x21, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x02, 0x46, 0x02, 0x88, + 0x88, 0x88, 0x88, 0x88, 0x88, 0x64, 0x88, 0x13, + 0x57, 0x13, 0x88, 0x88, 0x88, 0x88, 0x88, 0x88, + 0x75, 0x88, 0x23, 0x14, 0x00, 0x00, 0x02, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x03, 0x0A, + 0xA5, 0x00, 0x00, 0x00, 0x00); + + /* Adjust the gamma characteristics of the panel. */ + mipi_dsi_dcs_write_seq_multi(dsi_ctx, ST7703_CMD_SETGAMMA, + 0x00, 0x09, 0x0D, 0x23, 0x27, 0x3C, 0x41, 0x35, + 0x07, 0x0D, 0x0E, 0x12, 0x13, 0x10, 0x12, 0x12, + 0x18, 0x00, 0x09, 0x0D, 0x23, 0x27, 0x3C, 0x41, + 0x35, 0x07, 0x0D, 0x0E, 0x12, 0x13, 0x10, 0x12, + 0x12, 0x18); +} + +static const struct drm_display_mode xbd599_mode = { + .hdisplay = 720, + .hsync_start = 720 + 40, + .hsync_end = 720 + 40 + 40, + .htotal = 720 + 40 + 40 + 40, + .vdisplay = 1440, + .vsync_start = 1440 + 18, + .vsync_end = 1440 + 18 + 10, + .vtotal = 1440 + 18 + 10 + 17, + .clock = 69000, + .flags = DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC, + .width_mm = 68, + .height_mm = 136, +}; + +static const struct st7703_panel_desc xbd599_desc = { + .mode = &xbd599_mode, + .lanes = 4, + .mode_flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_VIDEO_SYNC_PULSE, + .format = MIPI_DSI_FMT_RGB888, + .init_sequence = xbd599_init_sequence, +}; + +static void rg353v2_init_sequence(struct mipi_dsi_multi_context *dsi_ctx) +{ + /* + * Init sequence was supplied by the panel vendor. + */ + + mipi_dsi_dcs_write_seq_multi(dsi_ctx, ST7703_CMD_SETEXTC, 0xf1, 0x12, 0x83); + mipi_dsi_dcs_write_seq_multi(dsi_ctx, ST7703_CMD_SETAPID, 0x00, 0x00, 0x00, + 0xda, 0x80); + mipi_dsi_dcs_write_seq_multi(dsi_ctx, ST7703_CMD_SETDISP, 0x00, 0x13, 0x70); + mipi_dsi_dcs_write_seq_multi(dsi_ctx, ST7703_CMD_SETRGBIF, 0x10, 0x10, 0x28, + 0x28, 0x03, 0xff, 0x00, 0x00, 0x00, 0x00); + mipi_dsi_dcs_write_seq_multi(dsi_ctx, ST7703_CMD_SETCYC, 0x80); + mipi_dsi_dcs_write_seq_multi(dsi_ctx, ST7703_CMD_SETBGP, 0x0a, 0x0a); + mipi_dsi_dcs_write_seq_multi(dsi_ctx, ST7703_CMD_SETVCOM, 0x92, 0x92); + mipi_dsi_dcs_write_seq_multi(dsi_ctx, ST7703_CMD_SETPOWER_EXT, 0x25, 0x22, + 0xf0, 0x63); + mipi_dsi_dcs_write_seq_multi(dsi_ctx, ST7703_CMD_SETMIPI, 0x33, 0x81, 0x05, + 0xf9, 0x0e, 0x0e, 0x20, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x44, 0x25, 0x00, 0x90, 0x0a, + 0x00, 0x00, 0x01, 0x4f, 0x01, 0x00, 0x00, 0x37); + mipi_dsi_dcs_write_seq_multi(dsi_ctx, ST7703_CMD_SETVDC, 0x47); + mipi_dsi_dcs_write_seq_multi(dsi_ctx, ST7703_CMD_UNKNOWN_BF, 0x02, 0x11, 0x00); + mipi_dsi_dcs_write_seq_multi(dsi_ctx, ST7703_CMD_SETSCR, 0x73, 0x73, 0x50, 0x50, + 0x00, 0x00, 0x12, 0x50, 0x00); + mipi_dsi_dcs_write_seq_multi(dsi_ctx, ST7703_CMD_SETPOWER, 0x53, 0xc0, 0x32, + 0x32, 0x77, 0xe1, 0xdd, 0xdd, 0x77, 0x77, 0x33, + 0x33); + mipi_dsi_dcs_write_seq_multi(dsi_ctx, ST7703_CMD_SETECO, 0x82, 0x00, 0xbf, 0xff, + 0x00, 0xff); + mipi_dsi_dcs_write_seq_multi(dsi_ctx, ST7703_CMD_SETIO, 0xb8, 0x00, 0x0a, 0x00, + 0x00, 0x00); + mipi_dsi_dcs_write_seq_multi(dsi_ctx, ST7703_CMD_SETCABC, 0x10, 0x40, 0x1e, + 0x02); + mipi_dsi_dcs_write_seq_multi(dsi_ctx, ST7703_CMD_SETPANEL, 0x0b); + mipi_dsi_dcs_write_seq_multi(dsi_ctx, ST7703_CMD_SETGAMMA, 0x00, 0x07, 0x0d, + 0x37, 0x35, 0x3f, 0x41, 0x44, 0x06, 0x0c, 0x0d, + 0x0f, 0x11, 0x10, 0x12, 0x14, 0x1a, 0x00, 0x07, + 0x0d, 0x37, 0x35, 0x3f, 0x41, 0x44, 0x06, 0x0c, + 0x0d, 0x0f, 0x11, 0x10, 0x12, 0x14, 0x1a); + mipi_dsi_dcs_write_seq_multi(dsi_ctx, ST7703_CMD_SETEQ, 0x07, 0x07, 0x0b, 0x0b, + 0x0b, 0x0b, 0x00, 0x00, 0x00, 0x00, 0xff, 0x00, + 0xc0, 0x10); + mipi_dsi_dcs_write_seq_multi(dsi_ctx, ST7703_CMD_SETGIP1, 0xc8, 0x10, 0x02, 0x00, + 0x00, 0xb0, 0xb1, 0x11, 0x31, 0x23, 0x28, 0x80, + 0xb0, 0xb1, 0x27, 0x08, 0x00, 0x04, 0x02, 0x00, + 0x00, 0x00, 0x00, 0x04, 0x02, 0x00, 0x00, 0x00, + 0x88, 0x88, 0xba, 0x60, 0x24, 0x08, 0x88, 0x88, + 0x88, 0x88, 0x88, 0x88, 0x88, 0xba, 0x71, 0x35, + 0x18, 0x88, 0x88, 0x88, 0x88, 0x88, 0x00, 0x00, + 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00); + mipi_dsi_dcs_write_seq_multi(dsi_ctx, ST7703_CMD_SETGIP2, 0x97, 0x0a, 0x82, 0x02, + 0x03, 0x07, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x81, 0x88, 0xba, 0x17, 0x53, 0x88, 0x88, 0x88, + 0x88, 0x88, 0x88, 0x80, 0x88, 0xba, 0x06, 0x42, + 0x88, 0x88, 0x88, 0x88, 0x88, 0x88, 0x23, 0x00, + 0x00, 0x02, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00); + mipi_dsi_dcs_write_seq_multi(dsi_ctx, ST7703_CMD_UNKNOWN_EF, 0xff, 0xff, 0x01); +} + +static const struct drm_display_mode rg353v2_mode = { + .hdisplay = 640, + .hsync_start = 640 + 40, + .hsync_end = 640 + 40 + 2, + .htotal = 640 + 40 + 2 + 80, + .vdisplay = 480, + .vsync_start = 480 + 18, + .vsync_end = 480 + 18 + 2, + .vtotal = 480 + 18 + 2 + 28, + .clock = 24150, + .flags = DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC, + .width_mm = 70, + .height_mm = 57, +}; + +static const struct st7703_panel_desc rg353v2_desc = { + .mode = &rg353v2_mode, + .lanes = 4, + .mode_flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_VIDEO_BURST | + MIPI_DSI_MODE_NO_EOT_PACKET | MIPI_DSI_MODE_LPM, + .format = MIPI_DSI_FMT_RGB888, + .init_sequence = rg353v2_init_sequence, +}; + +static void rgb30panel_init_sequence(struct mipi_dsi_multi_context *dsi_ctx) +{ + /* Init sequence extracted from Powkiddy RGB30 BSP kernel. */ + + /* + * For some reason this specific panel must be taken out of sleep + * before the full init sequence, or else it will not display. + */ + mipi_dsi_dcs_exit_sleep_mode_multi(dsi_ctx); + mipi_dsi_mdelay(dsi_ctx, 250); + + mipi_dsi_dcs_write_seq_multi(dsi_ctx, ST7703_CMD_SETEXTC, 0xf1, 0x12, 0x83); + mipi_dsi_dcs_write_seq_multi(dsi_ctx, ST7703_CMD_SETMIPI, 0x33, 0x81, 0x05, 0xf9, + 0x0e, 0x0e, 0x20, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x44, 0x25, 0x00, 0x90, 0x0a, 0x00, + 0x00, 0x01, 0x4f, 0x01, 0x00, 0x00, 0x37); + mipi_dsi_dcs_write_seq_multi(dsi_ctx, ST7703_CMD_SETPOWER_EXT, 0x25, 0x22, 0xf0, + 0x63); + mipi_dsi_dcs_write_seq_multi(dsi_ctx, ST7703_CMD_UNKNOWN_BF, 0x02, 0x11, 0x00); + mipi_dsi_dcs_write_seq_multi(dsi_ctx, ST7703_CMD_SETRGBIF, 0x10, 0x10, 0x28, + 0x28, 0x03, 0xff, 0x00, 0x00, 0x00, 0x00); + mipi_dsi_dcs_write_seq_multi(dsi_ctx, ST7703_CMD_SETSCR, 0x73, 0x73, 0x50, 0x50, + 0x00, 0x00, 0x12, 0x70, 0x00); + mipi_dsi_dcs_write_seq_multi(dsi_ctx, ST7703_CMD_SETVDC, 0x46); + mipi_dsi_dcs_write_seq_multi(dsi_ctx, ST7703_CMD_SETPANEL, 0x0b); + mipi_dsi_dcs_write_seq_multi(dsi_ctx, ST7703_CMD_SETCYC, 0x80); + mipi_dsi_dcs_write_seq_multi(dsi_ctx, ST7703_CMD_SETDISP, 0x3c, 0x12, 0x30); + mipi_dsi_dcs_write_seq_multi(dsi_ctx, ST7703_CMD_SETEQ, 0x07, 0x07, 0x0b, 0x0b, + 0x03, 0x0b, 0x00, 0x00, 0x00, 0x00, 0xff, 0x00, + 0xc0, 0x10); + mipi_dsi_dcs_write_seq_multi(dsi_ctx, ST7703_CMD_SETPOWER, 0x36, 0x00, 0x32, + 0x32, 0x77, 0xf1, 0xcc, 0xcc, 0x77, 0x77, 0x33, + 0x33); + mipi_dsi_dcs_write_seq_multi(dsi_ctx, ST7703_CMD_SETBGP, 0x0a, 0x0a); + mipi_dsi_dcs_write_seq_multi(dsi_ctx, ST7703_CMD_SETVCOM, 0x88, 0x88); + mipi_dsi_dcs_write_seq_multi(dsi_ctx, ST7703_CMD_SETGIP1, 0xc8, 0x10, 0x0a, 0x10, + 0x0f, 0xa1, 0x80, 0x12, 0x31, 0x23, 0x47, 0x86, + 0xa1, 0x80, 0x47, 0x08, 0x00, 0x00, 0x0d, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x0d, 0x00, 0x00, 0x00, + 0x48, 0x02, 0x8b, 0xaf, 0x46, 0x02, 0x88, 0x88, + 0x88, 0x88, 0x88, 0x48, 0x13, 0x8b, 0xaf, 0x57, + 0x13, 0x88, 0x88, 0x88, 0x88, 0x88, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00); + mipi_dsi_dcs_write_seq_multi(dsi_ctx, ST7703_CMD_SETGIP2, 0x96, 0x12, 0x01, 0x01, + 0x01, 0x78, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x4f, 0x31, 0x8b, 0xa8, 0x31, 0x75, 0x88, 0x88, + 0x88, 0x88, 0x88, 0x4f, 0x20, 0x8b, 0xa8, 0x20, + 0x64, 0x88, 0x88, 0x88, 0x88, 0x88, 0x23, 0x00, + 0x00, 0x01, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x40, 0xa1, 0x80, 0x00, 0x00, 0x00, + 0x00); + mipi_dsi_dcs_write_seq_multi(dsi_ctx, ST7703_CMD_SETGAMMA, 0x00, 0x0a, 0x0f, + 0x29, 0x3b, 0x3f, 0x42, 0x39, 0x06, 0x0d, 0x10, + 0x13, 0x15, 0x14, 0x15, 0x10, 0x17, 0x00, 0x0a, + 0x0f, 0x29, 0x3b, 0x3f, 0x42, 0x39, 0x06, 0x0d, + 0x10, 0x13, 0x15, 0x14, 0x15, 0x10, 0x17); +} + +static const struct drm_display_mode rgb30panel_mode = { + .hdisplay = 720, + .hsync_start = 720 + 45, + .hsync_end = 720 + 45 + 4, + .htotal = 720 + 45 + 4 + 45, + .vdisplay = 720, + .vsync_start = 720 + 15, + .vsync_end = 720 + 15 + 3, + .vtotal = 720 + 15 + 3 + 11, + .clock = 36570, + .flags = DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC, + .width_mm = 76, + .height_mm = 76, +}; + +static const struct st7703_panel_desc rgb30panel_desc = { + .mode = &rgb30panel_mode, + .lanes = 4, + .mode_flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_VIDEO_BURST | + MIPI_DSI_MODE_NO_EOT_PACKET | MIPI_DSI_MODE_LPM, + .format = MIPI_DSI_FMT_RGB888, + .init_sequence = rgb30panel_init_sequence, +}; + +static void rgb10max3_panel_init_sequence(struct mipi_dsi_multi_context *dsi_ctx) +{ + /* Init sequence extracted from Powkiddy RGB10MAX3 BSP kernel. */ + + mipi_dsi_dcs_write_seq_multi(dsi_ctx, ST7703_CMD_SETEXTC, 0xf1, 0x12, 0x83); + mipi_dsi_dcs_write_seq_multi(dsi_ctx, ST7703_CMD_SETAPID, 0x00, 0x00, 0x00, 0xda, + 0x80); + mipi_dsi_dcs_write_seq_multi(dsi_ctx, ST7703_CMD_SETDISP, 0xc8, 0x02, 0x30); + mipi_dsi_dcs_write_seq_multi(dsi_ctx, ST7703_CMD_SETRGBIF, 0x10, 0x10, 0x28, + 0x28, 0x03, 0xff, 0x00, 0x00, 0x00, 0x00); + mipi_dsi_dcs_write_seq_multi(dsi_ctx, ST7703_CMD_SETCYC, 0x80); + mipi_dsi_dcs_write_seq_multi(dsi_ctx, ST7703_CMD_SETBGP, 0x04, 0x04); + mipi_dsi_dcs_write_seq_multi(dsi_ctx, ST7703_CMD_SETVCOM, 0x78, 0x78); + mipi_dsi_dcs_write_seq_multi(dsi_ctx, ST7703_CMD_SETPOWER_EXT, 0x25, 0x22, 0xf0, + 0x63); + mipi_dsi_dcs_write_seq_multi(dsi_ctx, ST7703_CMD_SETMIPI, 0x33, 0x81, 0x05, 0xf9, + 0x0e, 0x0e, 0x20, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x44, 0x25, 0x00, 0x90, 0x0a, 0x00, + 0x00, 0x01, 0x4f, 0x01, 0x00, 0x00, 0x37); + mipi_dsi_dcs_write_seq_multi(dsi_ctx, ST7703_CMD_SETVDC, 0x47); + mipi_dsi_dcs_write_seq_multi(dsi_ctx, ST7703_CMD_UNKNOWN_BF, 0x02, 0x11, 0x00); + mipi_dsi_dcs_write_seq_multi(dsi_ctx, ST7703_CMD_SETSCR, 0x73, 0x73, 0x50, 0x50, + 0x00, 0x00, 0x12, 0x70, 0x00); + mipi_dsi_dcs_write_seq_multi(dsi_ctx, ST7703_CMD_SETPOWER, 0x25, 0x00, 0x32, + 0x32, 0x77, 0xe1, 0xff, 0xff, 0xcc, 0xcc, 0x77, + 0x77); + mipi_dsi_dcs_write_seq_multi(dsi_ctx, ST7703_CMD_SETECO, 0x82, 0x00, 0xbf, 0xff, + 0x00, 0xff); + mipi_dsi_dcs_write_seq_multi(dsi_ctx, ST7703_CMD_SETIO, 0xb8, 0x00, 0x0a, 0x00, + 0x00, 0x00); + mipi_dsi_dcs_write_seq_multi(dsi_ctx, ST7703_CMD_SETCABC, 0x10, 0x40, 0x1e, + 0x02); + mipi_dsi_dcs_write_seq_multi(dsi_ctx, ST7703_CMD_SETPANEL, 0x0b); + mipi_dsi_dcs_write_seq_multi(dsi_ctx, ST7703_CMD_SETGAMMA, 0x00, 0x04, 0x07, + 0x2a, 0x39, 0x3f, 0x36, 0x31, 0x06, 0x0b, 0x0e, + 0x12, 0x14, 0x12, 0x13, 0x0f, 0x17, 0x00, 0x04, + 0x07, 0x2a, 0x39, 0x3f, 0x36, 0x31, 0x06, 0x0b, + 0x0e, 0x12, 0x14, 0x12, 0x13, 0x0f, 0x17); + mipi_dsi_dcs_write_seq_multi(dsi_ctx, ST7703_CMD_SETEQ, 0x03, 0x03, 0x03, 0x03, + 0x00, 0x03, 0x00, 0x00, 0x00, 0x00, 0xff, 0x80, + 0xc0, 0x10); + mipi_dsi_dcs_write_seq_multi(dsi_ctx, ST7703_CMD_SETGIP1, 0xc8, 0x10, 0x08, 0x00, + 0x00, 0x41, 0xf8, 0x12, 0x31, 0x23, 0x37, 0x86, + 0x11, 0xc8, 0x37, 0x2a, 0x00, 0x00, 0x0c, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x0c, 0x00, 0x00, 0x00, + 0x88, 0x20, 0x46, 0x02, 0x88, 0x88, 0x88, 0x88, + 0x88, 0x88, 0xff, 0x88, 0x31, 0x57, 0x13, 0x88, + 0x88, 0x88, 0x88, 0x88, 0x88, 0xff, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00); + mipi_dsi_dcs_write_seq_multi(dsi_ctx, ST7703_CMD_SETGIP2, 0x00, 0x1a, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x8f, 0x13, 0x31, 0x75, 0x88, 0x88, 0x88, 0x88, + 0x88, 0x88, 0xf8, 0x8f, 0x02, 0x20, 0x64, 0x88, + 0x88, 0x88, 0x88, 0x88, 0x88, 0xf8, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00); + mipi_dsi_dcs_write_seq_multi(dsi_ctx, ST7703_CMD_UNKNOWN_EF, 0xff, 0xff, 0x01); +} + +static const struct drm_display_mode rgb10max3_panel_mode = { + .hdisplay = 720, + .hsync_start = 720 + 40, + .hsync_end = 720 + 40 + 10, + .htotal = 720 + 40 + 10 + 40, + .vdisplay = 1280, + .vsync_start = 1280 + 16, + .vsync_end = 1280 + 16 + 4, + .vtotal = 1280 + 16 + 4 + 14, + .clock = 63800, + .flags = DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC, + .width_mm = 62, + .height_mm = 109, +}; + +static const struct st7703_panel_desc rgb10max3_panel_desc = { + .mode = &rgb10max3_panel_mode, + .lanes = 4, + .mode_flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_VIDEO_BURST | + MIPI_DSI_MODE_NO_EOT_PACKET | MIPI_DSI_MODE_LPM, + .format = MIPI_DSI_FMT_RGB888, + .init_sequence = rgb10max3_panel_init_sequence, +}; + +static void gameforcechi_init_sequence(struct mipi_dsi_multi_context *dsi_ctx) +{ + /* + * Init sequence was supplied by the panel vendor. Panel will not + * respond to commands until it is brought out of sleep mode first. + */ + + mipi_dsi_dcs_exit_sleep_mode_multi(dsi_ctx); + mipi_dsi_mdelay(dsi_ctx, 250); + + mipi_dsi_dcs_write_seq_multi(dsi_ctx, ST7703_CMD_SETEXTC, 0xf1, 0x12, 0x83); + mipi_dsi_dcs_write_seq_multi(dsi_ctx, ST7703_CMD_SETMIPI, 0x31, 0x81, 0x05, 0xf9, + 0x0e, 0x0e, 0x20, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x44, 0x25, 0x00, 0x91, 0x0a, 0x00, + 0x00, 0x02, 0x4f, 0xd1, 0x00, 0x00, 0x37); + mipi_dsi_dcs_write_seq_multi(dsi_ctx, ST7703_CMD_SETPOWER_EXT, 0x25); + mipi_dsi_dcs_write_seq_multi(dsi_ctx, ST7703_CMD_UNKNOWN_BF, 0x02, 0x11, 0x00); + mipi_dsi_dcs_write_seq_multi(dsi_ctx, ST7703_CMD_SETRGBIF, 0x0c, 0x10, 0x0a, + 0x50, 0x03, 0xff, 0x00, 0x00, 0x00, 0x00); + mipi_dsi_dcs_write_seq_multi(dsi_ctx, ST7703_CMD_SETSCR, 0x73, 0x73, 0x50, 0x50, + 0x00, 0x00, 0x08, 0x70, 0x00); + mipi_dsi_dcs_write_seq_multi(dsi_ctx, ST7703_CMD_SETVDC, 0x46); + mipi_dsi_dcs_write_seq_multi(dsi_ctx, ST7703_CMD_SETPANEL, 0x0b); + mipi_dsi_dcs_write_seq_multi(dsi_ctx, ST7703_CMD_SETCYC, 0x80); + mipi_dsi_dcs_write_seq_multi(dsi_ctx, ST7703_CMD_SETDISP, 0x00, 0x13, 0xf0); + mipi_dsi_dcs_write_seq_multi(dsi_ctx, ST7703_CMD_SETEQ, 0x07, 0x07, 0x0b, 0x0b, + 0x03, 0x0b, 0x00, 0x00, 0x00, 0x00, 0xff, 0x00, + 0xc0, 0x10); + mipi_dsi_dcs_write_seq_multi(dsi_ctx, ST7703_CMD_SETPOWER, 0x53, 0x00, 0x1e, + 0x1e, 0x77, 0xe1, 0xcc, 0xdd, 0x67, 0x77, 0x33, + 0x33); + mipi_dsi_dcs_write_seq_multi(dsi_ctx, ST7703_CMD_SETBGP, 0x10, 0x10); + mipi_dsi_dcs_write_seq_multi(dsi_ctx, ST7703_CMD_SETVCOM, 0x6c, 0x7c); + mipi_dsi_dcs_write_seq_multi(dsi_ctx, ST7703_CMD_SETGIP1, 0x08, 0x00, 0x0e, 0x00, + 0x00, 0xb0, 0xb1, 0x11, 0x31, 0x23, 0x28, 0x10, + 0xb0, 0xb1, 0x27, 0x08, 0x00, 0x04, 0x02, 0x00, + 0x00, 0x00, 0x00, 0x04, 0x02, 0x00, 0x00, 0x00, + 0x88, 0x88, 0xba, 0x60, 0x24, 0x08, 0x88, 0x88, + 0x88, 0x88, 0x88, 0x88, 0x88, 0xba, 0x71, 0x35, + 0x18, 0x88, 0x88, 0x88, 0x88, 0x88, 0x00, 0x00, + 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00); + mipi_dsi_dcs_write_seq_multi(dsi_ctx, ST7703_CMD_SETGIP2, 0x97, 0x0a, 0x82, 0x02, + 0x13, 0x07, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x80, 0x88, 0xba, 0x17, 0x53, 0x88, 0x88, 0x88, + 0x88, 0x88, 0x88, 0x81, 0x88, 0xba, 0x06, 0x42, + 0x88, 0x88, 0x88, 0x88, 0x88, 0x88, 0x23, 0x10, + 0x00, 0x02, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00); + mipi_dsi_dcs_write_seq_multi(dsi_ctx, ST7703_CMD_SETGAMMA, 0x00, 0x07, 0x0b, + 0x27, 0x2d, 0x3f, 0x3b, 0x37, 0x05, 0x0a, 0x0b, + 0x0f, 0x11, 0x0f, 0x12, 0x12, 0x18, 0x00, 0x07, + 0x0b, 0x27, 0x2d, 0x3f, 0x3b, 0x37, 0x05, 0xa0, + 0x0b, 0x0f, 0x11, 0x0f, 0x12, 0x12, 0x18); +} + +static const struct drm_display_mode gameforcechi_mode = { + .hdisplay = 640, + .hsync_start = 640 + 40, + .hsync_end = 640 + 40 + 2, + .htotal = 640 + 40 + 2 + 80, + .vdisplay = 480, + .vsync_start = 480 + 17, + .vsync_end = 480 + 17 + 5, + .vtotal = 480 + 17 + 5 + 13, + .clock = 23546, + .flags = DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC, + .width_mm = 71, + .height_mm = 53, +}; + +static const struct st7703_panel_desc gameforcechi_desc = { + .mode = &gameforcechi_mode, + .lanes = 2, + .mode_flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_VIDEO_BURST | + MIPI_DSI_MODE_NO_EOT_PACKET | MIPI_DSI_MODE_LPM, + .format = MIPI_DSI_FMT_RGB888, + .init_sequence = gameforcechi_init_sequence, +}; + +static int st7703_enable(struct st7703 *ctx) +{ + struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev); + struct mipi_dsi_multi_context dsi_ctx = {.dsi = dsi}; + + ctx->desc->init_sequence(&dsi_ctx); + + mipi_dsi_dcs_exit_sleep_mode_multi(&dsi_ctx); + + /* It takes the controller 120 msec to wake up after sleep. */ + mipi_dsi_mdelay(&dsi_ctx, 120); + + mipi_dsi_dcs_set_display_on_multi(&dsi_ctx); + + if (dsi_ctx.accum_err) + return dsi_ctx.accum_err; + + dev_dbg(ctx->dev, "Panel init sequence done\n"); + return backlight_enable(ctx->backlight); +} + +static int st7703_disable(struct st7703 *ctx) +{ + struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev); + struct mipi_dsi_multi_context dsi_ctx = {.dsi = dsi}; + + backlight_disable(ctx->backlight); + + mipi_dsi_dcs_set_display_off_multi(&dsi_ctx); + + mipi_dsi_dcs_enter_sleep_mode_multi(&dsi_ctx); + + /* It takes the controller 120 msec to enter sleep mode. */ + mipi_dsi_mdelay(&dsi_ctx, 120); + + return dsi_ctx.accum_err; +} + +static int st7703_unprepare(struct st7703 *ctx) +{ + + gpiod_set_value_cansleep(ctx->reset_gpio, 1); + regulator_disable(ctx->iovcc); + regulator_disable(ctx->vcc); + + return 0; +} + +static int st7703_prepare(struct st7703 *ctx) +{ + int ret; + + dev_dbg(ctx->dev, "Resetting the panel\n"); + gpiod_set_value_cansleep(ctx->reset_gpio, 1); + + ret = regulator_enable(ctx->iovcc); + if (ret < 0) { + dev_err(ctx->dev, "Failed to enable iovcc supply: %d\n", ret); + return ret; + } + + ret = regulator_enable(ctx->vcc); + if (ret < 0) { + dev_err(ctx->dev, "Failed to enable vcc supply: %d\n", ret); + regulator_disable(ctx->iovcc); + return ret; + } + + /* Give power supplies time to stabilize before deasserting reset. */ + udelay(10000); + + gpiod_set_value_cansleep(ctx->reset_gpio, 0); + udelay(15000); + + return 0; +} + +static int st7703_get_modes(struct st7703 *ctx, + struct display_timings *timings) +{ + struct fb_videomode *mode; + + mode = xzalloc(sizeof(*mode)); + + drm_display_mode_to_fb_videomode(ctx->desc->mode, mode); + + timings->modes = mode; + timings->num_modes = 1; + + return 0; +} + +static int st7703_allpixelson_set(struct param_d *param, void *priv) +{ + struct st7703 *ctx = priv; + struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev); + struct mipi_dsi_multi_context dsi_ctx = {.dsi = dsi}; + + dev_dbg(ctx->dev, "Setting all pixels %s\n", + ctx->allpixelson ? "on" : "off"); + + if (ctx->allpixelson) + mipi_dsi_generic_write_seq_multi(&dsi_ctx, ST7703_CMD_ALL_PIXEL_ON); + else + mipi_dsi_generic_write_seq_multi(&dsi_ctx, ST7703_CMD_ALL_PIXEL_OFF); + + /* + * Reset the panel to get video back. NOTE: This isn't a + * particularly safe thing to do in general because it assumes + * that the screen was on to begin with, but this is just a + * debug parameter so it's not a huge deal. + */ + st7703_disable(ctx); + st7703_unprepare(ctx); + st7703_prepare(ctx); + st7703_enable(ctx); + + return dsi_ctx.accum_err; +} + +static int st7703_ioctl(struct vpl *vpl, unsigned int port, + unsigned int cmd, void *ptr) +{ + struct st7703 *ctx = container_of(vpl, struct st7703, vpl); + + switch (cmd) { + case VPL_PREPARE: + return st7703_prepare(ctx); + case VPL_ENABLE: + return st7703_enable(ctx); + case VPL_DISABLE: + return st7703_disable(ctx); + case VPL_UNPREPARE: + return st7703_unprepare(ctx); + case VPL_GET_VIDEOMODES: + return st7703_get_modes(ctx, ptr); + case VPL_GET_BUS_FORMAT: + *(u32 *)ptr = MEDIA_BUS_FMT_RGB888_1X24; + return 0; + default: + return 0; + } +} + +static int st7703_probe(struct mipi_dsi_device *dsi) +{ + struct device_node *backlight_node; + struct device *dev = &dsi->dev; + struct st7703 *ctx; + int ret; + + ctx = devm_kzalloc(dev, sizeof(*ctx), GFP_KERNEL); + if (!ctx) + return -ENOMEM; + + ctx->reset_gpio = gpiod_get(dev, "reset", GPIOD_OUT_LOW); + if (IS_ERR(ctx->reset_gpio)) + return dev_err_probe(dev, PTR_ERR(ctx->reset_gpio), "Failed to get reset gpio\n"); + + mipi_dsi_set_drvdata(dsi, ctx); + + ctx->dev = dev; + ctx->desc = of_device_get_match_data(dev); + + dsi->mode_flags = ctx->desc->mode_flags; + dsi->format = ctx->desc->format; + dsi->lanes = ctx->desc->lanes; + + ctx->vcc = regulator_get(dev, "vcc"); + if (IS_ERR(ctx->vcc)) + return dev_err_probe(dev, PTR_ERR(ctx->vcc), "Failed to request vcc regulator\n"); + + ctx->iovcc = regulator_get(dev, "iovcc"); + if (IS_ERR(ctx->iovcc)) + return dev_err_probe(dev, PTR_ERR(ctx->iovcc), + "Failed to request iovcc regulator\n"); + + backlight_node = of_parse_phandle(dev->device_node, "backlight", 0); + if (backlight_node) { + ctx->backlight = of_backlight_find(backlight_node); + if (!ctx->backlight) { + dev_err(dev, "Cannot find backlight\n"); + return -ENODEV; + } + } + + ctx->vpl.node = dev->of_node; + ctx->vpl.ioctl = st7703_ioctl; + + ret = vpl_register(&ctx->vpl); + if (ret) + return ret; + + ret = mipi_dsi_attach(dsi); + if (ret < 0) { + dev_err(dev, "mipi_dsi_attach failed (%d). Is host ready?\n", ret); + return ret; + } + + dev_info(dev, "%ux%u@%u %ubpp dsi %udl - ready\n", + ctx->desc->mode->hdisplay, ctx->desc->mode->vdisplay, + drm_mode_vrefresh(ctx->desc->mode), + mipi_dsi_pixel_format_to_bpp(dsi->format), dsi->lanes); + + dev_add_param_bool(dev, "allpixelson", st7703_allpixelson_set, NULL, + &ctx->allpixelson, ctx); + return 0; +} + +static const struct of_device_id st7703_of_match[] = { + { .compatible = "anbernic,rg353v-panel-v2", .data = &rg353v2_desc }, + { .compatible = "gameforce,chi-panel", .data = &gameforcechi_desc }, + { .compatible = "powkiddy,rgb10max3-panel", .data = &rgb10max3_panel_desc }, + { .compatible = "powkiddy,rgb30-panel", .data = &rgb30panel_desc }, + { .compatible = "rocktech,jh057n00900", .data = &jh057n00900_panel_desc }, + { .compatible = "xingbangda,xbd599", .data = &xbd599_desc }, + { /* sentinel */ } +}; +MODULE_DEVICE_TABLE(of, st7703_of_match); + +static struct mipi_dsi_driver st7703_driver = { + .probe = st7703_probe, + .driver = { + .name = DRV_NAME, + .of_match_table = st7703_of_match, + }, +}; +module_mipi_dsi_driver(st7703_driver); + +MODULE_AUTHOR("Guido Günther <[email protected]>"); +MODULE_DESCRIPTION("DRM driver for Sitronix ST7703 based MIPI DSI panels"); +MODULE_LICENSE("GPL v2"); -- 2.47.3
