#include <linux/delay.h>
#include <linux/gpio/consumer.h>
#include <linux/module.h>
#include <linux/of.h>
#include <linux/regulator/consumer.h>
#include <video/mipi_display.h>
#include <drm/drm_mipi_dsi.h>
#include <drm/drm_modes.h>
#include <drm/drm_panel.h>
struct sharp_ls060 {
struct drm_panel panel;
struct mipi_dsi_device *dsi;
struct regulator *vddi_supply;
struct regulator *vddh_supply;
struct regulator *avdd_supply;
struct regulator *avee_supply;
struct gpio_desc *reset_gpio;
};
static inline struct sharp_ls060 *to_sharp_ls060(struct drm_panel *panel)
{
return container_of(panel, struct sharp_ls060, panel);
}
static void sharp_ls060_reset(struct sharp_ls060 *ctx)
{
gpiod_set_value_cansleep(ctx->reset_gpio, 0);
usleep_range(10000, 11000);
gpiod_set_value_cansleep(ctx->reset_gpio, 1);
usleep_range(10000, 11000);
gpiod_set_value_cansleep(ctx->reset_gpio, 0);
usleep_range(10000, 11000);
}
static int sharp_ls060_on(struct sharp_ls060 *ctx)
{
struct mipi_dsi_device *dsi = ctx->dsi;
struct mipi_dsi_multi_context dsi_ctx = { .dsi = dsi };
dsi->mode_flags |= MIPI_DSI_MODE_LPM;
mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xbb, 0x13);
mipi_dsi_dcs_write_seq_multi(&dsi_ctx, MIPI_DCS_WRITE_MEMORY_START);
mipi_dsi_dcs_exit_sleep_mode_multi(&dsi_ctx);
mipi_dsi_msleep(&dsi_ctx, 120);
mipi_dsi_dcs_set_display_on_multi(&dsi_ctx);
mipi_dsi_msleep(&dsi_ctx, 50);
return dsi_ctx.accum_err;
}
static void sharp_ls060_off(struct sharp_ls060 *ctx)
{
struct mipi_dsi_device *dsi = ctx->dsi;
struct mipi_dsi_multi_context dsi_ctx = { .dsi = dsi };
dsi->mode_flags &= ~MIPI_DSI_MODE_LPM;
mipi_dsi_dcs_set_display_off_multi(&dsi_ctx);
mipi_dsi_usleep_range(&dsi_ctx, 2000, 3000);
mipi_dsi_dcs_enter_sleep_mode_multi(&dsi_ctx);
mipi_dsi_msleep(&dsi_ctx, 121);
}
static int sharp_ls060_prepare(struct drm_panel *panel)
{
struct sharp_ls060 *ctx = to_sharp_ls060(panel);
int ret;
ret = regulator_enable(ctx->vddi_supply);
if (ret < 0)
return ret;
ret = regulator_enable(ctx->avdd_supply);
if (ret < 0)
goto err_avdd;
usleep_range(1000, 2000);
ret = regulator_enable(ctx->avee_supply);
if (ret < 0)
goto err_avee;
usleep_range(10000, 11000);
ret = regulator_enable(ctx->vddh_supply);
if (ret < 0)
goto err_vddh;
usleep_range(10000, 11000);
sharp_ls060_reset(ctx);
ret = sharp_ls060_on(ctx);
if (ret < 0)
goto err_on;
return 0;
err_on:
regulator_disable(ctx->vddh_supply);
usleep_range(10000, 11000);
err_vddh:
regulator_disable(ctx->avee_supply);
err_avee:
regulator_disable(ctx->avdd_supply);
gpiod_set_value_cansleep(ctx->reset_gpio, 1);
err_avdd:
regulator_disable(ctx->vddi_supply);
return ret;
}
static int sharp_ls060_unprepare(struct drm_panel *panel)
{
struct sharp_ls060 *ctx = to_sharp_ls060(panel);
sharp_ls060_off(ctx);
regulator_disable(ctx->vddh_supply);
usleep_range(10000, 11000);
regulator_disable(ctx->avee_supply);
regulator_disable(ctx->avdd_supply);
gpiod_set_value_cansleep(ctx->reset_gpio, 1);
regulator_disable(ctx->vddi_supply);
return 0;
}
static const struct drm_display_mode sharp_ls060_mode = {
.clock = (1080 + 96 + 16 + 64) * (1920 + 4 + 1 + 16) * 60 / 1000,
.hdisplay = 1080,
.hsync_start = 1080 + 96,
.hsync_end = 1080 + 96 + 16,
.htotal = 1080 + 96 + 16 + 64,
.vdisplay = 1920,
.vsync_start = 1920 + 4,
.vsync_end = 1920 + 4 + 1,
.vtotal = 1920 + 4 + 1 + 16,
.width_mm = 75,
.height_mm = 132,
};
static int sharp_ls060_get_modes(struct drm_panel *panel,
struct drm_connector *connector)
{
struct drm_display_mode *mode;
mode = drm_mode_duplicate(connector->dev, &sharp_ls060_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 sharp_ls060_panel_funcs = {
.prepare = sharp_ls060_prepare,
.unprepare = sharp_ls060_unprepare,
.get_modes = sharp_ls060_get_modes,
};
static int sharp_ls060_probe(struct mipi_dsi_device *dsi)
{
struct device *dev = &dsi->dev;
struct sharp_ls060 *ctx;
int ret;
ctx = devm_drm_panel_alloc(dev, struct sharp_ls060, panel,
&sharp_ls060_panel_funcs,
DRM_MODE_CONNECTOR_DSI);
if (IS_ERR(ctx))
return PTR_ERR(ctx);
ctx->vddi_supply = devm_regulator_get(dev, "vddi");
if (IS_ERR(ctx->vddi_supply))
return PTR_ERR(ctx->vddi_supply);
ctx->vddh_supply = devm_regulator_get(dev, "vddh");
if (IS_ERR(ctx->vddh_supply))
return PTR_ERR(ctx->vddh_supply);
ctx->avdd_supply = devm_regulator_get(dev, "avdd");
if (IS_ERR(ctx->avdd_supply))
return PTR_ERR(ctx->avdd_supply);
ctx->avee_supply = devm_regulator_get(dev, "avee");
if (IS_ERR(ctx->avee_supply))
return PTR_ERR(ctx->avee_supply);
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 | MIPI_DSI_MODE_VIDEO_BURST |
MIPI_DSI_MODE_NO_EOT_PACKET |
MIPI_DSI_CLOCK_NON_CONTINUOUS;
ret = drm_panel_of_backlight(&ctx->panel);
if (ret)
return dev_err_probe(dev, ret, "Failed to get backlight\n");
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);
drm_panel_remove(&ctx->panel);
return ret;
}
return 0;
}
static void sharp_ls060_remove(struct mipi_dsi_device *dsi)
{
struct sharp_ls060 *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 sharp_ls060t1sx01_of_match[] = {
{ .compatible = "sharp,ls060t1sx01" },
{ }
};
MODULE_DEVICE_TABLE(of, sharp_ls060t1sx01_of_match);
static struct mipi_dsi_driver sharp_ls060_driver = {
.probe = sharp_ls060_probe,
.remove = sharp_ls060_remove,
.driver = {
.name = "panel-sharp-ls060t1sx01",
.of_match_table = sharp_ls060t1sx01_of_match,
},
};
module_mipi_dsi_driver(sharp_ls060_driver);
MODULE_AUTHOR("Dmitry Baryshkov <dmitry.baryshkov@linaro.org>");
MODULE_DESCRIPTION("DRM driver for Sharp LS060T1SX01 1080p video mode dsi panel");
MODULE_LICENSE("GPL v2");
