#include <linux/backlight.h>
#include <linux/delay.h>
#include <linux/gpio/consumer.h>
#include <linux/module.h>
#include <linux/of.h>
#include <linux/regulator/consumer.h>
#include <drm/drm_mipi_dsi.h>
#include <drm/drm_modes.h>
#include <drm/drm_panel.h>
struct visionox_g2647fb105 {
struct drm_panel panel;
struct mipi_dsi_device *dsi;
struct gpio_desc *reset_gpio;
struct regulator_bulk_data *supplies;
};
static const struct regulator_bulk_data visionox_g2647fb105_supplies[] = {
{ .supply = "vdd3p3" },
{ .supply = "vddio" },
{ .supply = "vsn" },
{ .supply = "vsp" },
};
static inline
struct visionox_g2647fb105 *to_visionox_g2647fb105(struct drm_panel *panel)
{
return container_of(panel, struct visionox_g2647fb105, panel);
}
static void visionox_g2647fb105_reset(struct visionox_g2647fb105 *ctx)
{
gpiod_set_value_cansleep(ctx->reset_gpio, 1);
usleep_range(1000, 2000);
gpiod_set_value_cansleep(ctx->reset_gpio, 0);
usleep_range(10000, 11000);
}
static int visionox_g2647fb105_on(struct visionox_g2647fb105 *ctx)
{
struct mipi_dsi_device *dsi = ctx->dsi;
struct mipi_dsi_multi_context dsi_ctx = { .dsi = dsi };
mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x70, 0x04);
mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xfe, 0x40);
mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x4d, 0x32);
mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xfe, 0x40);
mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xbe, 0x17);
mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xbf, 0xbb);
mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xc0, 0xdd);
mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xc1, 0xff);
mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xfe, 0xd0);
mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x03, 0x24);
mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x04, 0x03);
mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xfe, 0x00);
mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xc2, 0x08);
mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xfe, 0x00);
mipi_dsi_dcs_set_tear_on_multi(&dsi_ctx, MIPI_DSI_DCS_TEAR_MODE_VBLANK);
mipi_dsi_dcs_set_display_brightness_multi(&dsi_ctx, 0x0000);
mipi_dsi_dcs_exit_sleep_mode_multi(&dsi_ctx);
mipi_dsi_msleep(&dsi_ctx, 100);
mipi_dsi_dcs_set_display_on_multi(&dsi_ctx);
return dsi_ctx.accum_err;
}
static int visionox_g2647fb105_off(struct visionox_g2647fb105 *ctx)
{
struct mipi_dsi_device *dsi = ctx->dsi;
struct mipi_dsi_multi_context dsi_ctx = { .dsi = dsi };
mipi_dsi_dcs_set_display_off_multi(&dsi_ctx);
mipi_dsi_msleep(&dsi_ctx, 50);
mipi_dsi_dcs_enter_sleep_mode_multi(&dsi_ctx);
mipi_dsi_msleep(&dsi_ctx, 20);
return dsi_ctx.accum_err;
}
static int visionox_g2647fb105_prepare(struct drm_panel *panel)
{
struct visionox_g2647fb105 *ctx = to_visionox_g2647fb105(panel);
struct device *dev = &ctx->dsi->dev;
int ret;
ret = regulator_bulk_enable(ARRAY_SIZE(visionox_g2647fb105_supplies), ctx->supplies);
if (ret < 0) {
dev_err(dev, "Failed to enable regulators: %d\n", ret);
return ret;
}
visionox_g2647fb105_reset(ctx);
ret = visionox_g2647fb105_on(ctx);
if (ret < 0) {
dev_err(dev, "Failed to initialize panel: %d\n", ret);
return ret;
}
return 0;
}
static int visionox_g2647fb105_unprepare(struct drm_panel *panel)
{
struct visionox_g2647fb105 *ctx = to_visionox_g2647fb105(panel);
struct device *dev = &ctx->dsi->dev;
int ret;
ret = visionox_g2647fb105_off(ctx);
if (ret < 0)
dev_err(dev, "Failed to un-initialize panel: %d\n", ret);
gpiod_set_value_cansleep(ctx->reset_gpio, 1);
regulator_bulk_disable(ARRAY_SIZE(visionox_g2647fb105_supplies), ctx->supplies);
return 0;
}
static const struct drm_display_mode visionox_g2647fb105_mode = {
.clock = (1080 + 28 + 4 + 36) * (2340 + 8 + 4 + 4) * 60 / 1000,
.hdisplay = 1080,
.hsync_start = 1080 + 28,
.hsync_end = 1080 + 28 + 4,
.htotal = 1080 + 28 + 4 + 36,
.vdisplay = 2340,
.vsync_start = 2340 + 8,
.vsync_end = 2340 + 8 + 4,
.vtotal = 2340 + 8 + 4 + 4,
.width_mm = 69,
.height_mm = 149,
};
static int visionox_g2647fb105_get_modes(struct drm_panel *panel,
struct drm_connector *connector)
{
struct drm_display_mode *mode;
mode = drm_mode_duplicate(connector->dev, &visionox_g2647fb105_mode);
if (!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 visionox_g2647fb105_panel_funcs = {
.prepare = visionox_g2647fb105_prepare,
.unprepare = visionox_g2647fb105_unprepare,
.get_modes = visionox_g2647fb105_get_modes,
};
static int visionox_g2647fb105_bl_update_status(struct backlight_device *bl)
{
struct mipi_dsi_device *dsi = bl_get_data(bl);
u16 brightness = backlight_get_brightness(bl);
int ret;
dsi->mode_flags &= ~MIPI_DSI_MODE_LPM;
ret = mipi_dsi_dcs_set_display_brightness_large(dsi, brightness);
if (ret < 0)
return ret;
dsi->mode_flags |= MIPI_DSI_MODE_LPM;
return 0;
}
static const struct backlight_ops visionox_g2647fb105_bl_ops = {
.update_status = visionox_g2647fb105_bl_update_status,
};
static struct backlight_device *
visionox_g2647fb105_create_backlight(struct mipi_dsi_device *dsi)
{
struct device *dev = &dsi->dev;
const struct backlight_properties props = {
.type = BACKLIGHT_RAW,
.brightness = 1023,
.max_brightness = 2047,
};
return devm_backlight_device_register(dev, dev_name(dev), dev, dsi,
&visionox_g2647fb105_bl_ops, &props);
}
static int visionox_g2647fb105_probe(struct mipi_dsi_device *dsi)
{
struct device *dev = &dsi->dev;
struct visionox_g2647fb105 *ctx;
int ret;
ctx = devm_kzalloc(dev, sizeof(*ctx), GFP_KERNEL);
if (!ctx)
return -ENOMEM;
ret = devm_regulator_bulk_get_const(dev,
ARRAY_SIZE(visionox_g2647fb105_supplies),
visionox_g2647fb105_supplies,
&ctx->supplies);
if (ret < 0)
return dev_err_probe(dev, ret, "Failed to get regulators\n");
ctx->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_HIGH);
if (IS_ERR(ctx->reset_gpio))
return dev_err_probe(dev, PTR_ERR(ctx->reset_gpio),
"Failed to get reset-gpios\n");
ctx->dsi = dsi;
mipi_dsi_set_drvdata(dsi, ctx);
dsi->lanes = 4;
dsi->format = MIPI_DSI_FMT_RGB888;
dsi->mode_flags = MIPI_DSI_MODE_VIDEO_BURST |
MIPI_DSI_CLOCK_NON_CONTINUOUS | MIPI_DSI_MODE_LPM;
ctx->panel.prepare_prev_first = true;
drm_panel_init(&ctx->panel, dev, &visionox_g2647fb105_panel_funcs,
DRM_MODE_CONNECTOR_DSI);
ctx->panel.prepare_prev_first = true;
ctx->panel.backlight = visionox_g2647fb105_create_backlight(dsi);
if (IS_ERR(ctx->panel.backlight))
return dev_err_probe(dev, PTR_ERR(ctx->panel.backlight),
"Failed to create backlight\n");
drm_panel_add(&ctx->panel);
ret = devm_mipi_dsi_attach(dev, dsi);
if (ret < 0) {
drm_panel_remove(&ctx->panel);
return dev_err_probe(dev, ret, "Failed to attach to DSI host\n");
}
return 0;
}
static void visionox_g2647fb105_remove(struct mipi_dsi_device *dsi)
{
struct visionox_g2647fb105 *ctx = mipi_dsi_get_drvdata(dsi);
drm_panel_remove(&ctx->panel);
}
static const struct of_device_id visionox_g2647fb105_of_match[] = {
{ .compatible = "visionox,g2647fb105" },
{ }
};
MODULE_DEVICE_TABLE(of, visionox_g2647fb105_of_match);
static struct mipi_dsi_driver visionox_g2647fb105_driver = {
.probe = visionox_g2647fb105_probe,
.remove = visionox_g2647fb105_remove,
.driver = {
.name = "panel-visionox-g2647fb105",
.of_match_table = visionox_g2647fb105_of_match,
},
};
module_mipi_dsi_driver(visionox_g2647fb105_driver);
MODULE_AUTHOR("Alexander Baransky <sanyapilot496@gmail.com>");
MODULE_DESCRIPTION("DRM driver for Visionox G2647FB105 AMOLED DSI panel");
MODULE_LICENSE("GPL");
