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linux/drivers/gpu/drm/panel/panel-sitronix-st7703.c
Douglas Anderson 718bd8a1a5 drm/panel: sitronix-st7703: Don't call disable at shutdown/remove 
It's the responsibility of a correctly written DRM modeset driver to
call drm_atomic_helper_shutdown() at shutdown time and that should be
disabling / unpreparing the panel if needed. Panel drivers shouldn't
be calling these functions themselves.

A recent effort was made to fix as many DRM modeset drivers as
possible [1] [2] [3] and most drivers are fixed now.

The compatible strings used by this driver seem to show up across
boards using a variety of DRM drivers. It appears that the relevant
drivers have been converted, but at least one compatible string
doesn't seem to be found in any mainline dts files so we can't be 100%
sure. If it is found that the DRM modeset driver hasn't been fixed
then this patch could be temporarily reverted until it is.

[1] https://lore.kernel.org/r/20230901234015.566018-1-dianders@chromium.org
[2] https://lore.kernel.org/r/20230901234202.566951-1-dianders@chromium.org
[3] https://lore.kernel.org/r/20230921192749.1542462-1-dianders@chromium.org

Cc: Guido Günther <agx@sigxcpu.org>
Cc: Ondřej Jirman <megi@xff.cz>
Cc: Chris Morgan <macromorgan@hotmail.com>
Cc: Frank Oltmanns <frank@oltmanns.dev>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Maxime Ripard <mripard@kernel.org>
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20240503143327.RFT.v2.43.I08ba0d4e2d534c06ab0ede9c148bb14cc7c1a9d7@changeid
2024-05-28 13:09:12 -07:00

978 lines
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// 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 <linux/debugfs.h>
#include <linux/delay.h>
#include <linux/gpio/consumer.h>
#include <linux/media-bus-format.h>
#include <linux/mod_devicetable.h>
#include <linux/module.h>
#include <linux/of.h>
#include <linux/regulator/consumer.h>
#include <video/display_timing.h>
#include <video/mipi_display.h>
#include <drm/drm_mipi_dsi.h>
#include <drm/drm_modes.h>
#include <drm/drm_panel.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 drm_panel panel;
struct gpio_desc *reset_gpio;
struct regulator *vcc;
struct regulator *iovcc;
struct dentry *debugfs;
const struct st7703_panel_desc *desc;
enum drm_panel_orientation orientation;
};
struct st7703_panel_desc {
const struct drm_display_mode *mode;
unsigned int lanes;
unsigned long mode_flags;
enum mipi_dsi_pixel_format format;
int (*init_sequence)(struct st7703 *ctx);
};
static inline struct st7703 *panel_to_st7703(struct drm_panel *panel)
{
return container_of(panel, struct st7703, panel);
}
static int jh057n_init_sequence(struct st7703 *ctx)
{
struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);
/*
* 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(dsi, ST7703_CMD_SETEXTC,
0xF1, 0x12, 0x83);
mipi_dsi_generic_write_seq(dsi, ST7703_CMD_SETRGBIF,
0x10, 0x10, 0x05, 0x05, 0x03, 0xFF, 0x00, 0x00,
0x00, 0x00);
mipi_dsi_generic_write_seq(dsi, ST7703_CMD_SETSCR,
0x73, 0x73, 0x50, 0x50, 0x00, 0x00, 0x08, 0x70,
0x00);
mipi_dsi_generic_write_seq(dsi, ST7703_CMD_SETVDC, 0x4E);
mipi_dsi_generic_write_seq(dsi, ST7703_CMD_SETPANEL, 0x0B);
mipi_dsi_generic_write_seq(dsi, ST7703_CMD_SETCYC, 0x80);
mipi_dsi_generic_write_seq(dsi, ST7703_CMD_SETDISP, 0xF0, 0x12, 0x30);
mipi_dsi_generic_write_seq(dsi, ST7703_CMD_SETEQ,
0x07, 0x07, 0x0B, 0x0B, 0x03, 0x0B, 0x00, 0x00,
0x00, 0x00, 0xFF, 0x00, 0xC0, 0x10);
mipi_dsi_generic_write_seq(dsi, ST7703_CMD_SETBGP, 0x08, 0x08);
msleep(20);
mipi_dsi_generic_write_seq(dsi, ST7703_CMD_SETVCOM, 0x3F, 0x3F);
mipi_dsi_generic_write_seq(dsi, ST7703_CMD_UNKNOWN_BF, 0x02, 0x11, 0x00);
mipi_dsi_generic_write_seq(dsi, 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(dsi, 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(dsi, 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);
msleep(20);
return 0;
}
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 int xbd599_init_sequence(struct st7703 *ctx)
{
struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);
/*
* Init sequence was supplied by the panel vendor.
*/
/* Magic sequence to unlock user commands below. */
mipi_dsi_dcs_write_seq(dsi, ST7703_CMD_SETEXTC, 0xF1, 0x12, 0x83);
mipi_dsi_dcs_write_seq(dsi, 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(dsi, 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(dsi, 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(dsi, 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(dsi, 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(dsi, ST7703_CMD_SETPANEL, 0x0B);
/* Zig-Zag Type C column inversion. */
mipi_dsi_dcs_write_seq(dsi, ST7703_CMD_SETCYC, 0x80);
/* Set display resolution. */
mipi_dsi_dcs_write_seq(dsi, 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(dsi, 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(dsi, ST7703_CMD_SETECO, 0x01, 0x00, 0xFF, 0xFF, 0x00);
mipi_dsi_dcs_write_seq(dsi, 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(dsi, ST7703_CMD_SETBGP,
0x07, /* VREF_SEL = 4.2V */
0x07 /* NVREF_SEL = 4.2V */);
mipi_dsi_dcs_write_seq(dsi, ST7703_CMD_SETVCOM,
0x2C, /* VCOMDC_F = -0.67V */
0x2C /* VCOMDC_B = -0.67V */);
/* Undocumented command. */
mipi_dsi_dcs_write_seq(dsi, ST7703_CMD_UNKNOWN_BF, 0x02, 0x11, 0x00);
/* This command is to set forward GIP timing. */
mipi_dsi_dcs_write_seq(dsi, 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(dsi, 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(dsi, 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);
return 0;
}
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 int rg353v2_init_sequence(struct st7703 *ctx)
{
struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);
/*
* Init sequence was supplied by the panel vendor.
*/
mipi_dsi_dcs_write_seq(dsi, ST7703_CMD_SETEXTC, 0xf1, 0x12, 0x83);
mipi_dsi_dcs_write_seq(dsi, ST7703_CMD_SETAPID, 0x00, 0x00, 0x00,
0xda, 0x80);
mipi_dsi_dcs_write_seq(dsi, ST7703_CMD_SETDISP, 0x00, 0x13, 0x70);
mipi_dsi_dcs_write_seq(dsi, ST7703_CMD_SETRGBIF, 0x10, 0x10, 0x28,
0x28, 0x03, 0xff, 0x00, 0x00, 0x00, 0x00);
mipi_dsi_dcs_write_seq(dsi, ST7703_CMD_SETCYC, 0x80);
mipi_dsi_dcs_write_seq(dsi, ST7703_CMD_SETBGP, 0x0a, 0x0a);
mipi_dsi_dcs_write_seq(dsi, ST7703_CMD_SETVCOM, 0x92, 0x92);
mipi_dsi_dcs_write_seq(dsi, ST7703_CMD_SETPOWER_EXT, 0x25, 0x22,
0xf0, 0x63);
mipi_dsi_dcs_write_seq(dsi, 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(dsi, ST7703_CMD_SETVDC, 0x47);
mipi_dsi_dcs_write_seq(dsi, ST7703_CMD_UNKNOWN_BF, 0x02, 0x11, 0x00);
mipi_dsi_dcs_write_seq(dsi, ST7703_CMD_SETSCR, 0x73, 0x73, 0x50, 0x50,
0x00, 0x00, 0x12, 0x50, 0x00);
mipi_dsi_dcs_write_seq(dsi, ST7703_CMD_SETPOWER, 0x53, 0xc0, 0x32,
0x32, 0x77, 0xe1, 0xdd, 0xdd, 0x77, 0x77, 0x33,
0x33);
mipi_dsi_dcs_write_seq(dsi, ST7703_CMD_SETECO, 0x82, 0x00, 0xbf, 0xff,
0x00, 0xff);
mipi_dsi_dcs_write_seq(dsi, ST7703_CMD_SETIO, 0xb8, 0x00, 0x0a, 0x00,
0x00, 0x00);
mipi_dsi_dcs_write_seq(dsi, ST7703_CMD_SETCABC, 0x10, 0x40, 0x1e,
0x02);
mipi_dsi_dcs_write_seq(dsi, ST7703_CMD_SETPANEL, 0x0b);
mipi_dsi_dcs_write_seq(dsi, 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(dsi, ST7703_CMD_SETEQ, 0x07, 0x07, 0x0b, 0x0b,
0x0b, 0x0b, 0x00, 0x00, 0x00, 0x00, 0xff, 0x00,
0xc0, 0x10);
mipi_dsi_dcs_write_seq(dsi, 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(dsi, 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(dsi, ST7703_CMD_UNKNOWN_EF, 0xff, 0xff, 0x01);
return 0;
}
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 int rgb30panel_init_sequence(struct st7703 *ctx)
{
struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);
/* 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(dsi);
msleep(250);
mipi_dsi_dcs_write_seq(dsi, ST7703_CMD_SETEXTC, 0xf1, 0x12, 0x83);
mipi_dsi_dcs_write_seq(dsi, 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(dsi, ST7703_CMD_SETPOWER_EXT, 0x25, 0x22, 0xf0,
0x63);
mipi_dsi_dcs_write_seq(dsi, ST7703_CMD_UNKNOWN_BF, 0x02, 0x11, 0x00);
mipi_dsi_dcs_write_seq(dsi, ST7703_CMD_SETRGBIF, 0x10, 0x10, 0x28,
0x28, 0x03, 0xff, 0x00, 0x00, 0x00, 0x00);
mipi_dsi_dcs_write_seq(dsi, ST7703_CMD_SETSCR, 0x73, 0x73, 0x50, 0x50,
0x00, 0x00, 0x12, 0x70, 0x00);
mipi_dsi_dcs_write_seq(dsi, ST7703_CMD_SETVDC, 0x46);
mipi_dsi_dcs_write_seq(dsi, ST7703_CMD_SETPANEL, 0x0b);
mipi_dsi_dcs_write_seq(dsi, ST7703_CMD_SETCYC, 0x80);
mipi_dsi_dcs_write_seq(dsi, ST7703_CMD_SETDISP, 0x3c, 0x12, 0x30);
mipi_dsi_dcs_write_seq(dsi, ST7703_CMD_SETEQ, 0x07, 0x07, 0x0b, 0x0b,
0x03, 0x0b, 0x00, 0x00, 0x00, 0x00, 0xff, 0x00,
0xc0, 0x10);
mipi_dsi_dcs_write_seq(dsi, ST7703_CMD_SETPOWER, 0x36, 0x00, 0x32,
0x32, 0x77, 0xf1, 0xcc, 0xcc, 0x77, 0x77, 0x33,
0x33);
mipi_dsi_dcs_write_seq(dsi, ST7703_CMD_SETBGP, 0x0a, 0x0a);
mipi_dsi_dcs_write_seq(dsi, ST7703_CMD_SETVCOM, 0x88, 0x88);
mipi_dsi_dcs_write_seq(dsi, 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(dsi, 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(dsi, 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);
return 0;
}
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 int rgb10max3_panel_init_sequence(struct st7703 *ctx)
{
struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);
/* Init sequence extracted from Powkiddy RGB10MAX3 BSP kernel. */
mipi_dsi_dcs_write_seq(dsi, ST7703_CMD_SETEXTC, 0xf1, 0x12, 0x83);
mipi_dsi_dcs_write_seq(dsi, ST7703_CMD_SETAPID, 0x00, 0x00, 0x00, 0xda,
0x80);
mipi_dsi_dcs_write_seq(dsi, ST7703_CMD_SETDISP, 0xc8, 0x02, 0x30);
mipi_dsi_dcs_write_seq(dsi, ST7703_CMD_SETRGBIF, 0x10, 0x10, 0x28,
0x28, 0x03, 0xff, 0x00, 0x00, 0x00, 0x00);
mipi_dsi_dcs_write_seq(dsi, ST7703_CMD_SETCYC, 0x80);
mipi_dsi_dcs_write_seq(dsi, ST7703_CMD_SETBGP, 0x04, 0x04);
mipi_dsi_dcs_write_seq(dsi, ST7703_CMD_SETVCOM, 0x78, 0x78);
mipi_dsi_dcs_write_seq(dsi, ST7703_CMD_SETPOWER_EXT, 0x25, 0x22, 0xf0,
0x63);
mipi_dsi_dcs_write_seq(dsi, 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(dsi, ST7703_CMD_SETVDC, 0x47);
mipi_dsi_dcs_write_seq(dsi, ST7703_CMD_UNKNOWN_BF, 0x02, 0x11, 0x00);
mipi_dsi_dcs_write_seq(dsi, ST7703_CMD_SETSCR, 0x73, 0x73, 0x50, 0x50,
0x00, 0x00, 0x12, 0x70, 0x00);
mipi_dsi_dcs_write_seq(dsi, ST7703_CMD_SETPOWER, 0x25, 0x00, 0x32,
0x32, 0x77, 0xe1, 0xff, 0xff, 0xcc, 0xcc, 0x77,
0x77);
mipi_dsi_dcs_write_seq(dsi, ST7703_CMD_SETECO, 0x82, 0x00, 0xbf, 0xff,
0x00, 0xff);
mipi_dsi_dcs_write_seq(dsi, ST7703_CMD_SETIO, 0xb8, 0x00, 0x0a, 0x00,
0x00, 0x00);
mipi_dsi_dcs_write_seq(dsi, ST7703_CMD_SETCABC, 0x10, 0x40, 0x1e,
0x02);
mipi_dsi_dcs_write_seq(dsi, ST7703_CMD_SETPANEL, 0x0b);
mipi_dsi_dcs_write_seq(dsi, 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(dsi, ST7703_CMD_SETEQ, 0x03, 0x03, 0x03, 0x03,
0x00, 0x03, 0x00, 0x00, 0x00, 0x00, 0xff, 0x80,
0xc0, 0x10);
mipi_dsi_dcs_write_seq(dsi, 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(dsi, 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(dsi, ST7703_CMD_UNKNOWN_EF, 0xff, 0xff, 0x01);
return 0;
}
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 int gameforcechi_init_sequence(struct st7703 *ctx)
{
struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);
/*
* 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(dsi);
msleep(250);
mipi_dsi_dcs_write_seq(dsi, ST7703_CMD_SETEXTC, 0xf1, 0x12, 0x83);
mipi_dsi_dcs_write_seq(dsi, 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(dsi, ST7703_CMD_SETPOWER_EXT, 0x25);
mipi_dsi_dcs_write_seq(dsi, ST7703_CMD_UNKNOWN_BF, 0x02, 0x11, 0x00);
mipi_dsi_dcs_write_seq(dsi, ST7703_CMD_SETRGBIF, 0x0c, 0x10, 0x0a,
0x50, 0x03, 0xff, 0x00, 0x00, 0x00, 0x00);
mipi_dsi_dcs_write_seq(dsi, ST7703_CMD_SETSCR, 0x73, 0x73, 0x50, 0x50,
0x00, 0x00, 0x08, 0x70, 0x00);
mipi_dsi_dcs_write_seq(dsi, ST7703_CMD_SETVDC, 0x46);
mipi_dsi_dcs_write_seq(dsi, ST7703_CMD_SETPANEL, 0x0b);
mipi_dsi_dcs_write_seq(dsi, ST7703_CMD_SETCYC, 0x80);
mipi_dsi_dcs_write_seq(dsi, ST7703_CMD_SETDISP, 0x00, 0x13, 0xf0);
mipi_dsi_dcs_write_seq(dsi, ST7703_CMD_SETEQ, 0x07, 0x07, 0x0b, 0x0b,
0x03, 0x0b, 0x00, 0x00, 0x00, 0x00, 0xff, 0x00,
0xc0, 0x10);
mipi_dsi_dcs_write_seq(dsi, ST7703_CMD_SETPOWER, 0x53, 0x00, 0x1e,
0x1e, 0x77, 0xe1, 0xcc, 0xdd, 0x67, 0x77, 0x33,
0x33);
mipi_dsi_dcs_write_seq(dsi, ST7703_CMD_SETBGP, 0x10, 0x10);
mipi_dsi_dcs_write_seq(dsi, ST7703_CMD_SETVCOM, 0x6c, 0x7c);
mipi_dsi_dcs_write_seq(dsi, 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(dsi, 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(dsi, 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);
return 0;
}
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 drm_panel *panel)
{
struct st7703 *ctx = panel_to_st7703(panel);
struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);
int ret;
ret = ctx->desc->init_sequence(ctx);
if (ret < 0) {
dev_err(ctx->dev, "Panel init sequence failed: %d\n", ret);
return ret;
}
ret = mipi_dsi_dcs_exit_sleep_mode(dsi);
if (ret < 0) {
dev_err(ctx->dev, "Failed to exit sleep mode: %d\n", ret);
return ret;
}
/* It takes the controller 120 msec to wake up after sleep. */
msleep(120);
ret = mipi_dsi_dcs_set_display_on(dsi);
if (ret)
return ret;
dev_dbg(ctx->dev, "Panel init sequence done\n");
return 0;
}
static int st7703_disable(struct drm_panel *panel)
{
struct st7703 *ctx = panel_to_st7703(panel);
struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);
int ret;
ret = mipi_dsi_dcs_set_display_off(dsi);
if (ret < 0)
dev_err(ctx->dev, "Failed to turn off the display: %d\n", ret);
ret = mipi_dsi_dcs_enter_sleep_mode(dsi);
if (ret < 0)
dev_err(ctx->dev, "Failed to enter sleep mode: %d\n", ret);
/* It takes the controller 120 msec to enter sleep mode. */
msleep(120);
return 0;
}
static int st7703_unprepare(struct drm_panel *panel)
{
struct st7703 *ctx = panel_to_st7703(panel);
gpiod_set_value_cansleep(ctx->reset_gpio, 1);
regulator_disable(ctx->iovcc);
regulator_disable(ctx->vcc);
return 0;
}
static int st7703_prepare(struct drm_panel *panel)
{
struct st7703 *ctx = panel_to_st7703(panel);
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. */
usleep_range(10000, 20000);
gpiod_set_value_cansleep(ctx->reset_gpio, 0);
usleep_range(15000, 20000);
return 0;
}
static const u32 mantix_bus_formats[] = {
MEDIA_BUS_FMT_RGB888_1X24,
};
static int st7703_get_modes(struct drm_panel *panel,
struct drm_connector *connector)
{
struct st7703 *ctx = panel_to_st7703(panel);
struct drm_display_mode *mode;
mode = drm_mode_duplicate(connector->dev, ctx->desc->mode);
if (!mode) {
dev_err(ctx->dev, "Failed to add mode %ux%u@%u\n",
ctx->desc->mode->hdisplay, ctx->desc->mode->vdisplay,
drm_mode_vrefresh(ctx->desc->mode));
return -ENOMEM;
}
drm_mode_set_name(mode);
mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED;
connector->display_info.width_mm = mode->width_mm;
connector->display_info.height_mm = mode->height_mm;
drm_mode_probed_add(connector, mode);
drm_display_info_set_bus_formats(&connector->display_info,
mantix_bus_formats,
ARRAY_SIZE(mantix_bus_formats));
return 1;
}
static enum drm_panel_orientation st7703_get_orientation(struct drm_panel *panel)
{
struct st7703 *st7703 = panel_to_st7703(panel);
return st7703->orientation;
}
static const struct drm_panel_funcs st7703_drm_funcs = {
.disable = st7703_disable,
.unprepare = st7703_unprepare,
.prepare = st7703_prepare,
.enable = st7703_enable,
.get_modes = st7703_get_modes,
.get_orientation = st7703_get_orientation,
};
static int allpixelson_set(void *data, u64 val)
{
struct st7703 *ctx = data;
struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);
dev_dbg(ctx->dev, "Setting all pixels on\n");
mipi_dsi_generic_write_seq(dsi, ST7703_CMD_ALL_PIXEL_ON);
msleep(val * 1000);
/*
* 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
* debugfs file so it's not a huge deal.
*/
drm_panel_disable(&ctx->panel);
drm_panel_unprepare(&ctx->panel);
drm_panel_prepare(&ctx->panel);
drm_panel_enable(&ctx->panel);
return 0;
}
DEFINE_SIMPLE_ATTRIBUTE(allpixelson_fops, NULL,
allpixelson_set, "%llu\n");
static void st7703_debugfs_init(struct st7703 *ctx)
{
ctx->debugfs = debugfs_create_dir(DRV_NAME, NULL);
debugfs_create_file("allpixelson", 0600, ctx->debugfs, ctx,
&allpixelson_fops);
}
static void st7703_debugfs_remove(struct st7703 *ctx)
{
debugfs_remove_recursive(ctx->debugfs);
ctx->debugfs = NULL;
}
static int st7703_probe(struct mipi_dsi_device *dsi)
{
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 = devm_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 = devm_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 = devm_regulator_get(dev, "iovcc");
if (IS_ERR(ctx->iovcc))
return dev_err_probe(dev, PTR_ERR(ctx->iovcc),
"Failed to request iovcc regulator\n");
ret = of_drm_get_panel_orientation(dsi->dev.of_node, &ctx->orientation);
if (ret < 0)
return dev_err_probe(&dsi->dev, ret, "Failed to get orientation\n");
drm_panel_init(&ctx->panel, dev, &st7703_drm_funcs,
DRM_MODE_CONNECTOR_DSI);
ret = drm_panel_of_backlight(&ctx->panel);
if (ret)
return ret;
drm_panel_add(&ctx->panel);
ret = mipi_dsi_attach(dsi);
if (ret < 0) {
dev_err(dev, "mipi_dsi_attach failed (%d). Is host ready?\n", ret);
drm_panel_remove(&ctx->panel);
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);
st7703_debugfs_init(ctx);
return 0;
}
static void st7703_remove(struct mipi_dsi_device *dsi)
{
struct st7703 *ctx = 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);
drm_panel_remove(&ctx->panel);
st7703_debugfs_remove(ctx);
}
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,
.remove = st7703_remove,
.driver = {
.name = DRV_NAME,
.of_match_table = st7703_of_match,
},
};
module_mipi_dsi_driver(st7703_driver);
MODULE_AUTHOR("Guido Günther <agx@sigxcpu.org>");
MODULE_DESCRIPTION("DRM driver for Sitronix ST7703 based MIPI DSI panels");
MODULE_LICENSE("GPL v2");
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