// SPDX-License-Identifier: GPL-2.0-only
#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 tm5p5_nt35596 {
struct drm_panel panel;
struct mipi_dsi_device *dsi;
struct regulator_bulk_data supplies[2];
struct gpio_desc *reset_gpio;
};
static inline struct tm5p5_nt35596 *to_tm5p5_nt35596(struct drm_panel *panel)
{
return container_of(panel, struct tm5p5_nt35596, panel);
}
static void tm5p5_nt35596_reset(struct tm5p5_nt35596 *ctx)
{
gpiod_set_value_cansleep(ctx->reset_gpio, 1);
usleep_range(1000, 2000);
gpiod_set_value_cansleep(ctx->reset_gpio, 0);
usleep_range(1000, 2000);
gpiod_set_value_cansleep(ctx->reset_gpio, 1);
usleep_range(15000, 16000);
}
static void tm5p5_nt35596_on(struct mipi_dsi_multi_context *dsi_ctx)
{
mipi_dsi_generic_write_seq_multi(dsi_ctx, 0xff, 0x05);
mipi_dsi_generic_write_seq_multi(dsi_ctx, 0xfb, 0x01);
mipi_dsi_generic_write_seq_multi(dsi_ctx, 0xc5, 0x31);
mipi_dsi_generic_write_seq_multi(dsi_ctx, 0xff, 0x04);
mipi_dsi_generic_write_seq_multi(dsi_ctx, 0x01, 0x84);
mipi_dsi_generic_write_seq_multi(dsi_ctx, 0x05, 0x25);
mipi_dsi_generic_write_seq_multi(dsi_ctx, 0x06, 0x01);
mipi_dsi_generic_write_seq_multi(dsi_ctx, 0x07, 0x20);
mipi_dsi_generic_write_seq_multi(dsi_ctx, 0x08, 0x06);
mipi_dsi_generic_write_seq_multi(dsi_ctx, 0x09, 0x08);
mipi_dsi_generic_write_seq_multi(dsi_ctx, 0x0a, 0x10);
mipi_dsi_generic_write_seq_multi(dsi_ctx, 0x0b, 0x10);
mipi_dsi_generic_write_seq_multi(dsi_ctx, 0x0c, 0x10);
mipi_dsi_generic_write_seq_multi(dsi_ctx, 0x0d, 0x14);
mipi_dsi_generic_write_seq_multi(dsi_ctx, 0x0e, 0x14);
mipi_dsi_generic_write_seq_multi(dsi_ctx, 0x0f, 0x14);
mipi_dsi_generic_write_seq_multi(dsi_ctx, 0x10, 0x14);
mipi_dsi_generic_write_seq_multi(dsi_ctx, 0x11, 0x14);
mipi_dsi_generic_write_seq_multi(dsi_ctx, 0x12, 0x14);
mipi_dsi_generic_write_seq_multi(dsi_ctx, 0x17, 0xf3);
mipi_dsi_generic_write_seq_multi(dsi_ctx, 0x18, 0xc0);
mipi_dsi_generic_write_seq_multi(dsi_ctx, 0x19, 0xc0);
mipi_dsi_generic_write_seq_multi(dsi_ctx, 0x1a, 0xc0);
mipi_dsi_generic_write_seq_multi(dsi_ctx, 0x1b, 0xb3);
mipi_dsi_generic_write_seq_multi(dsi_ctx, 0x1c, 0xb3);
mipi_dsi_generic_write_seq_multi(dsi_ctx, 0x1d, 0xb3);
mipi_dsi_generic_write_seq_multi(dsi_ctx, 0x1e, 0xb3);
mipi_dsi_generic_write_seq_multi(dsi_ctx, 0x1f, 0xb3);
mipi_dsi_generic_write_seq_multi(dsi_ctx, 0x20, 0xb3);
mipi_dsi_generic_write_seq_multi(dsi_ctx, 0xfb, 0x01);
mipi_dsi_generic_write_seq_multi(dsi_ctx, 0xff, 0x00);
mipi_dsi_generic_write_seq_multi(dsi_ctx, 0xfb, 0x01);
mipi_dsi_generic_write_seq_multi(dsi_ctx, 0x35, 0x01);
mipi_dsi_generic_write_seq_multi(dsi_ctx, 0xd3, 0x06);
mipi_dsi_generic_write_seq_multi(dsi_ctx, 0xd4, 0x04);
mipi_dsi_generic_write_seq_multi(dsi_ctx, 0x5e, 0x0d);
mipi_dsi_generic_write_seq_multi(dsi_ctx, 0x11, 0x00);
mipi_dsi_msleep(dsi_ctx, 100);
mipi_dsi_generic_write_seq_multi(dsi_ctx, 0x29, 0x00);
mipi_dsi_generic_write_seq_multi(dsi_ctx, 0x53, 0x24);
}
static void tm5p5_nt35596_off(struct mipi_dsi_multi_context *dsi_ctx)
{
mipi_dsi_dcs_set_display_off_multi(dsi_ctx);
mipi_dsi_msleep(dsi_ctx, 60);
mipi_dsi_dcs_enter_sleep_mode_multi(dsi_ctx);
mipi_dsi_dcs_write_seq_multi(dsi_ctx, 0x4f, 0x01);
}
static int tm5p5_nt35596_prepare(struct drm_panel *panel)
{
struct tm5p5_nt35596 *ctx = to_tm5p5_nt35596(panel);
struct mipi_dsi_multi_context dsi_ctx = {.dsi = ctx->dsi};
dsi_ctx.accum_err = regulator_bulk_enable(ARRAY_SIZE(ctx->supplies), ctx->supplies);
if (dsi_ctx.accum_err)
return dsi_ctx.accum_err;
tm5p5_nt35596_reset(ctx);
tm5p5_nt35596_on(&dsi_ctx);
if (dsi_ctx.accum_err) {
gpiod_set_value_cansleep(ctx->reset_gpio, 0);
regulator_bulk_disable(ARRAY_SIZE(ctx->supplies),
ctx->supplies);
}
return dsi_ctx.accum_err;
}
static int tm5p5_nt35596_unprepare(struct drm_panel *panel)
{
struct tm5p5_nt35596 *ctx = to_tm5p5_nt35596(panel);
struct mipi_dsi_multi_context dsi_ctx = {.dsi = ctx->dsi};
tm5p5_nt35596_off(&dsi_ctx);
gpiod_set_value_cansleep(ctx->reset_gpio, 0);
regulator_bulk_disable(ARRAY_SIZE(ctx->supplies),
ctx->supplies);
return dsi_ctx.accum_err;
}
static const struct drm_display_mode tm5p5_nt35596_mode = {
.clock = (1080 + 100 + 8 + 16) * (1920 + 4 + 2 + 4) * 60 / 1000,
.hdisplay = 1080,
.hsync_start = 1080 + 100,
.hsync_end = 1080 + 100 + 8,
.htotal = 1080 + 100 + 8 + 16,
.vdisplay = 1920,
.vsync_start = 1920 + 4,
.vsync_end = 1920 + 4 + 2,
.vtotal = 1920 + 4 + 2 + 4,
.width_mm = 68,
.height_mm = 121,
};
static int tm5p5_nt35596_get_modes(struct drm_panel *panel,
struct drm_connector *connector)
{
struct drm_display_mode *mode;
mode = drm_mode_duplicate(connector->dev, &tm5p5_nt35596_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 tm5p5_nt35596_panel_funcs = {
.prepare = tm5p5_nt35596_prepare,
.unprepare = tm5p5_nt35596_unprepare,
.get_modes = tm5p5_nt35596_get_modes,
};
static int tm5p5_nt35596_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(dsi, brightness);
if (ret < 0)
return ret;
dsi->mode_flags |= MIPI_DSI_MODE_LPM;
return 0;
}
static int tm5p5_nt35596_bl_get_brightness(struct backlight_device *bl)
{
struct mipi_dsi_device *dsi = bl_get_data(bl);
u16 brightness = bl->props.brightness;
int ret;
dsi->mode_flags &= ~MIPI_DSI_MODE_LPM;
ret = mipi_dsi_dcs_get_display_brightness(dsi, &brightness);
if (ret < 0)
return ret;
dsi->mode_flags |= MIPI_DSI_MODE_LPM;
return brightness & 0xff;
}
static const struct backlight_ops tm5p5_nt35596_bl_ops = {
.update_status = tm5p5_nt35596_bl_update_status,
.get_brightness = tm5p5_nt35596_bl_get_brightness,
};
static struct backlight_device *
tm5p5_nt35596_create_backlight(struct mipi_dsi_device *dsi)
{
struct device *dev = &dsi->dev;
const struct backlight_properties props = {
.type = BACKLIGHT_RAW,
.brightness = 255,
.max_brightness = 255,
};
return devm_backlight_device_register(dev, dev_name(dev), dev, dsi,
&tm5p5_nt35596_bl_ops, &props);
}
static int tm5p5_nt35596_probe(struct mipi_dsi_device *dsi)
{
struct device *dev = &dsi->dev;
struct tm5p5_nt35596 *ctx;
int ret;
ctx = devm_kzalloc(dev, sizeof(*ctx), GFP_KERNEL);
if (!ctx)
return -ENOMEM;
ctx->supplies[0].supply = "vdd";
ctx->supplies[1].supply = "vddio";
ret = devm_regulator_bulk_get(dev, ARRAY_SIZE(ctx->supplies),
ctx->supplies);
if (ret < 0) {
dev_err(dev, "Failed to get regulators: %d\n", ret);
return ret;
}
ctx->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_LOW);
if (IS_ERR(ctx->reset_gpio)) {
ret = PTR_ERR(ctx->reset_gpio);
dev_err(dev, "Failed to get reset-gpios: %d\n", ret);
return ret;
}
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 | MIPI_DSI_MODE_VIDEO_BURST |
MIPI_DSI_MODE_VIDEO_HSE | MIPI_DSI_MODE_NO_EOT_PACKET |
MIPI_DSI_CLOCK_NON_CONTINUOUS | MIPI_DSI_MODE_LPM;
drm_panel_init(&ctx->panel, dev, &tm5p5_nt35596_panel_funcs,
DRM_MODE_CONNECTOR_DSI);
ctx->panel.backlight = tm5p5_nt35596_create_backlight(dsi);
if (IS_ERR(ctx->panel.backlight)) {
ret = PTR_ERR(ctx->panel.backlight);
dev_err(dev, "Failed to create backlight: %d\n", ret);
return ret;
}
drm_panel_add(&ctx->panel);
ret = mipi_dsi_attach(dsi);
if (ret < 0) {
dev_err(dev, "Failed to attach to DSI host: %d\n", ret);
return ret;
}
return 0;
}
static void tm5p5_nt35596_remove(struct mipi_dsi_device *dsi)
{
struct tm5p5_nt35596 *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 tm5p5_nt35596_of_match[] = {
{ .compatible = "asus,z00t-tm5p5-n35596" },
{ /* sentinel */ }
};
MODULE_DEVICE_TABLE(of, tm5p5_nt35596_of_match);
static struct mipi_dsi_driver tm5p5_nt35596_driver = {
.probe = tm5p5_nt35596_probe,
.remove = tm5p5_nt35596_remove,
.driver = {
.name = "panel-tm5p5-nt35596",
.of_match_table = tm5p5_nt35596_of_match,
},
};
module_mipi_dsi_driver(tm5p5_nt35596_driver);
MODULE_AUTHOR("Konrad Dybcio <[email protected]>");
MODULE_DESCRIPTION("DRM driver for tm5p5 nt35596 1080p video mode dsi panel");
MODULE_LICENSE("GPL v2");
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