#include <drm/drm_mipi_dsi.h>
#include <drm/drm_modes.h>
#include <drm/drm_panel.h>
#include <video/display_timing.h>
#include <video/mipi_display.h>
#include <linux/delay.h>
#include <linux/gpio/consumer.h>
#include <linux/media-bus-format.h>
#include <linux/module.h>
#include <linux/of.h>
#include <linux/regulator/consumer.h>
#define XPP055C272_CMD_ALL_PIXEL_OFF 0x22
#define XPP055C272_CMD_ALL_PIXEL_ON 0x23
#define XPP055C272_CMD_SETDISP 0xb2
#define XPP055C272_CMD_SETRGBIF 0xb3
#define XPP055C272_CMD_SETCYC 0xb4
#define XPP055C272_CMD_SETBGP 0xb5
#define XPP055C272_CMD_SETVCOM 0xb6
#define XPP055C272_CMD_SETOTP 0xb7
#define XPP055C272_CMD_SETPOWER_EXT 0xb8
#define XPP055C272_CMD_SETEXTC 0xb9
#define XPP055C272_CMD_SETMIPI 0xbA
#define XPP055C272_CMD_SETVDC 0xbc
#define XPP055C272_CMD_SETPCR 0xbf
#define XPP055C272_CMD_SETSCR 0xc0
#define XPP055C272_CMD_SETPOWER 0xc1
#define XPP055C272_CMD_SETECO 0xc6
#define XPP055C272_CMD_SETPANEL 0xcc
#define XPP055C272_CMD_SETGAMMA 0xe0
#define XPP055C272_CMD_SETEQ 0xe3
#define XPP055C272_CMD_SETGIP1 0xe9
#define XPP055C272_CMD_SETGIP2 0xea
struct xpp055c272 {
struct device *dev;
struct drm_panel panel;
struct gpio_desc *reset_gpio;
struct regulator *vci;
struct regulator *iovcc;
};
static inline struct xpp055c272 *panel_to_xpp055c272(struct drm_panel *panel)
{
return container_of(panel, struct xpp055c272, panel);
}
static void xpp055c272_init_sequence(struct mipi_dsi_multi_context *dsi_ctx)
{
mipi_dsi_dcs_write_seq_multi(dsi_ctx, XPP055C272_CMD_SETEXTC, 0xf1, 0x12, 0x83);
mipi_dsi_dcs_write_seq_multi(dsi_ctx, XPP055C272_CMD_SETMIPI,
0x33, 0x81, 0x05, 0xf9, 0x0e, 0x0e, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x44, 0x25,
0x00, 0x91, 0x0a, 0x00, 0x00, 0x02, 0x4f, 0x01,
0x00, 0x00, 0x37);
mipi_dsi_dcs_write_seq_multi(dsi_ctx, XPP055C272_CMD_SETPOWER_EXT, 0x25);
mipi_dsi_dcs_write_seq_multi(dsi_ctx, XPP055C272_CMD_SETPCR, 0x02, 0x11, 0x00);
mipi_dsi_dcs_write_seq_multi(dsi_ctx, XPP055C272_CMD_SETRGBIF,
0x0c, 0x10, 0x0a, 0x50, 0x03, 0xff, 0x00, 0x00,
0x00, 0x00);
mipi_dsi_dcs_write_seq_multi(dsi_ctx, XPP055C272_CMD_SETSCR,
0x73, 0x73, 0x50, 0x50, 0x00, 0x00, 0x08, 0x70,
0x00);
mipi_dsi_dcs_write_seq_multi(dsi_ctx, XPP055C272_CMD_SETVDC, 0x46);
mipi_dsi_dcs_write_seq_multi(dsi_ctx, XPP055C272_CMD_SETPANEL, 0x0b);
mipi_dsi_dcs_write_seq_multi(dsi_ctx, XPP055C272_CMD_SETCYC, 0x80);
mipi_dsi_dcs_write_seq_multi(dsi_ctx, XPP055C272_CMD_SETDISP, 0xc8, 0x12, 0x30);
mipi_dsi_dcs_write_seq_multi(dsi_ctx, XPP055C272_CMD_SETEQ,
0x07, 0x07, 0x0b, 0x0b, 0x03, 0x0b, 0x00, 0x00,
0x00, 0x00, 0xff, 0x00, 0xC0, 0x10);
mipi_dsi_dcs_write_seq_multi(dsi_ctx, XPP055C272_CMD_SETPOWER,
0x53, 0x00, 0x1e, 0x1e, 0x77, 0xe1, 0xcc, 0xdd,
0x67, 0x77, 0x33, 0x33);
mipi_dsi_dcs_write_seq_multi(dsi_ctx, XPP055C272_CMD_SETECO, 0x00, 0x00, 0xff,
0xff, 0x01, 0xff);
mipi_dsi_dcs_write_seq_multi(dsi_ctx, XPP055C272_CMD_SETBGP, 0x09, 0x09);
mipi_dsi_msleep(dsi_ctx, 20);
mipi_dsi_dcs_write_seq_multi(dsi_ctx, XPP055C272_CMD_SETVCOM, 0x87, 0x95);
mipi_dsi_dcs_write_seq_multi(dsi_ctx, XPP055C272_CMD_SETGIP1,
0xc2, 0x10, 0x05, 0x05, 0x10, 0x05, 0xa0, 0x12,
0x31, 0x23, 0x3f, 0x81, 0x0a, 0xa0, 0x37, 0x18,
0x00, 0x80, 0x01, 0x00, 0x00, 0x00, 0x00, 0x80,
0x01, 0x00, 0x00, 0x00, 0x48, 0xf8, 0x86, 0x42,
0x08, 0x88, 0x88, 0x80, 0x88, 0x88, 0x88, 0x58,
0xf8, 0x87, 0x53, 0x18, 0x88, 0x88, 0x81, 0x88,
0x88, 0x88, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00);
mipi_dsi_dcs_write_seq_multi(dsi_ctx, XPP055C272_CMD_SETGIP2,
0x00, 0x1a, 0x00, 0x00, 0x00, 0x00, 0x02, 0x00,
0x00, 0x00, 0x00, 0x00, 0x1f, 0x88, 0x81, 0x35,
0x78, 0x88, 0x88, 0x85, 0x88, 0x88, 0x88, 0x0f,
0x88, 0x80, 0x24, 0x68, 0x88, 0x88, 0x84, 0x88,
0x88, 0x88, 0x23, 0x10, 0x00, 0x00, 0x1c, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x30, 0x05,
0xa0, 0x00, 0x00, 0x00, 0x00);
mipi_dsi_dcs_write_seq_multi(dsi_ctx, XPP055C272_CMD_SETGAMMA,
0x00, 0x06, 0x08, 0x2a, 0x31, 0x3f, 0x38, 0x36,
0x07, 0x0c, 0x0d, 0x11, 0x13, 0x12, 0x13, 0x11,
0x18, 0x00, 0x06, 0x08, 0x2a, 0x31, 0x3f, 0x38,
0x36, 0x07, 0x0c, 0x0d, 0x11, 0x13, 0x12, 0x13,
0x11, 0x18);
mipi_dsi_msleep(dsi_ctx, 60);
}
static int xpp055c272_unprepare(struct drm_panel *panel)
{
struct xpp055c272 *ctx = panel_to_xpp055c272(panel);
struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);
struct mipi_dsi_multi_context dsi_ctx = { .dsi = dsi };
mipi_dsi_dcs_set_display_off_multi(&dsi_ctx);
mipi_dsi_dcs_enter_sleep_mode_multi(&dsi_ctx);
if (dsi_ctx.accum_err)
return dsi_ctx.accum_err;
regulator_disable(ctx->iovcc);
regulator_disable(ctx->vci);
return 0;
}
static int xpp055c272_prepare(struct drm_panel *panel)
{
struct xpp055c272 *ctx = panel_to_xpp055c272(panel);
struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);
struct mipi_dsi_multi_context dsi_ctx = { .dsi = dsi };
dev_dbg(ctx->dev, "Resetting the panel\n");
dsi_ctx.accum_err = regulator_enable(ctx->vci);
if (dsi_ctx.accum_err) {
dev_err(ctx->dev, "Failed to enable vci supply: %d\n",
dsi_ctx.accum_err);
return dsi_ctx.accum_err;
}
dsi_ctx.accum_err = regulator_enable(ctx->iovcc);
if (dsi_ctx.accum_err) {
dev_err(ctx->dev, "Failed to enable iovcc supply: %d\n",
dsi_ctx.accum_err);
goto disable_vci;
}
gpiod_set_value_cansleep(ctx->reset_gpio, 1);
usleep_range(10, 20);
gpiod_set_value_cansleep(ctx->reset_gpio, 0);
msleep(20);
xpp055c272_init_sequence(&dsi_ctx);
if (!dsi_ctx.accum_err)
dev_dbg(ctx->dev, "Panel init sequence done\n");
mipi_dsi_dcs_exit_sleep_mode_multi(&dsi_ctx);
mipi_dsi_msleep(&dsi_ctx, 120);
mipi_dsi_dcs_set_display_on_multi(&dsi_ctx);
if (dsi_ctx.accum_err)
goto disable_iovcc;
msleep(50);
return 0;
disable_iovcc:
regulator_disable(ctx->iovcc);
disable_vci:
regulator_disable(ctx->vci);
return dsi_ctx.accum_err;
}
static const struct drm_display_mode default_mode = {
.hdisplay = 720,
.hsync_start = 720 + 40,
.hsync_end = 720 + 40 + 10,
.htotal = 720 + 40 + 10 + 40,
.vdisplay = 1280,
.vsync_start = 1280 + 22,
.vsync_end = 1280 + 22 + 4,
.vtotal = 1280 + 22 + 4 + 11,
.clock = 64000,
.width_mm = 68,
.height_mm = 121,
};
static int xpp055c272_get_modes(struct drm_panel *panel,
struct drm_connector *connector)
{
struct xpp055c272 *ctx = panel_to_xpp055c272(panel);
struct drm_display_mode *mode;
mode = drm_mode_duplicate(connector->dev, &default_mode);
if (!mode) {
dev_err(ctx->dev, "Failed to add mode %ux%u@%u\n",
default_mode.hdisplay, default_mode.vdisplay,
drm_mode_vrefresh(&default_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);
return 1;
}
static const struct drm_panel_funcs xpp055c272_funcs = {
.unprepare = xpp055c272_unprepare,
.prepare = xpp055c272_prepare,
.get_modes = xpp055c272_get_modes,
};
static int xpp055c272_probe(struct mipi_dsi_device *dsi)
{
struct device *dev = &dsi->dev;
struct xpp055c272 *ctx;
int ret;
ctx = devm_drm_panel_alloc(dev, struct xpp055c272, panel,
&xpp055c272_funcs, DRM_MODE_CONNECTOR_DSI);
if (IS_ERR(ctx))
return PTR_ERR(ctx);
ctx->reset_gpio = devm_gpiod_get_optional(dev, "reset", GPIOD_OUT_LOW);
if (IS_ERR(ctx->reset_gpio))
return dev_err_probe(dev, PTR_ERR(ctx->reset_gpio),
"cannot get reset gpio\n");
ctx->vci = devm_regulator_get(dev, "vci");
if (IS_ERR(ctx->vci))
return dev_err_probe(dev, PTR_ERR(ctx->vci),
"Failed to request vci 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");
mipi_dsi_set_drvdata(dsi, ctx);
ctx->dev = dev;
dsi->lanes = 4;
dsi->format = MIPI_DSI_FMT_RGB888;
dsi->mode_flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_VIDEO_BURST |
MIPI_DSI_MODE_LPM | MIPI_DSI_MODE_NO_EOT_PACKET;
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\n", ret);
drm_panel_remove(&ctx->panel);
return ret;
}
return 0;
}
static void xpp055c272_remove(struct mipi_dsi_device *dsi)
{
struct xpp055c272 *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);
}
static const struct of_device_id xpp055c272_of_match[] = {
{ .compatible = "xinpeng,xpp055c272" },
{ }
};
MODULE_DEVICE_TABLE(of, xpp055c272_of_match);
static struct mipi_dsi_driver xpp055c272_driver = {
.driver = {
.name = "panel-xinpeng-xpp055c272",
.of_match_table = xpp055c272_of_match,
},
.probe = xpp055c272_probe,
.remove = xpp055c272_remove,
};
module_mipi_dsi_driver(xpp055c272_driver);
MODULE_AUTHOR("Heiko Stuebner <heiko.stuebner@theobroma-systems.com>");
MODULE_DESCRIPTION("DRM driver for Xinpeng xpp055c272 MIPI DSI panel");
MODULE_LICENSE("GPL v2");
