diff options
Diffstat (limited to 'drivers/gpu/drm/panel/panel-hydis-hv101hd1.c')
| -rw-r--r-- | drivers/gpu/drm/panel/panel-hydis-hv101hd1.c | 188 |
1 files changed, 188 insertions, 0 deletions
diff --git a/drivers/gpu/drm/panel/panel-hydis-hv101hd1.c b/drivers/gpu/drm/panel/panel-hydis-hv101hd1.c new file mode 100644 index 000000000000..46426c388932 --- /dev/null +++ b/drivers/gpu/drm/panel/panel-hydis-hv101hd1.c @@ -0,0 +1,188 @@ +// SPDX-License-Identifier: GPL-2.0-only + +#include <linux/array_size.h> +#include <linux/delay.h> +#include <linux/err.h> +#include <linux/gpio/consumer.h> +#include <linux/mod_devicetable.h> +#include <linux/module.h> +#include <linux/property.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 hv101hd1 { + struct drm_panel panel; + struct mipi_dsi_device *dsi; + struct regulator_bulk_data *supplies; +}; + +static const struct regulator_bulk_data hv101hd1_supplies[] = { + { .supply = "vdd" }, + { .supply = "vio" }, +}; + +static inline struct hv101hd1 *to_hv101hd1(struct drm_panel *panel) +{ + return container_of(panel, struct hv101hd1, panel); +} + +static int hv101hd1_prepare(struct drm_panel *panel) +{ + struct hv101hd1 *hv = to_hv101hd1(panel); + struct mipi_dsi_multi_context ctx = { .dsi = hv->dsi }; + struct device *dev = &hv->dsi->dev; + int ret; + + ret = regulator_bulk_enable(ARRAY_SIZE(hv101hd1_supplies), hv->supplies); + if (ret) { + dev_err(dev, "error enabling regulators (%d)\n", ret); + return ret; + } + + mipi_dsi_dcs_exit_sleep_mode_multi(&ctx); + mipi_dsi_msleep(&ctx, 20); + + mipi_dsi_dcs_set_display_on_multi(&ctx); + mipi_dsi_msleep(&ctx, 20); + + return 0; +} + +static int hv101hd1_disable(struct drm_panel *panel) +{ + struct hv101hd1 *hv = to_hv101hd1(panel); + struct mipi_dsi_multi_context ctx = { .dsi = hv->dsi }; + + mipi_dsi_dcs_set_display_off_multi(&ctx); + mipi_dsi_msleep(&ctx, 120); + mipi_dsi_dcs_enter_sleep_mode_multi(&ctx); + mipi_dsi_msleep(&ctx, 20); + + return 0; +} + +static int hv101hd1_unprepare(struct drm_panel *panel) +{ + struct hv101hd1 *hv = to_hv101hd1(panel); + + return regulator_bulk_disable(ARRAY_SIZE(hv101hd1_supplies), + hv->supplies); +} + +static const struct drm_display_mode hv101hd1_mode = { + .clock = (1366 + 74 + 36 + 24) * (768 + 21 + 7 + 4) * 60 / 1000, + .hdisplay = 1366, + .hsync_start = 1366 + 74, + .hsync_end = 1366 + 74 + 36, + .htotal = 1366 + 74 + 36 + 24, + .vdisplay = 768, + .vsync_start = 768 + 21, + .vsync_end = 768 + 21 + 7, + .vtotal = 768 + 21 + 7 + 4, + .width_mm = 140, + .height_mm = 220, +}; + +static int hv101hd1_get_modes(struct drm_panel *panel, struct drm_connector *connector) +{ + struct drm_display_mode *mode; + + mode = drm_mode_duplicate(connector->dev, &hv101hd1_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 hv101hd1_panel_funcs = { + .prepare = hv101hd1_prepare, + .disable = hv101hd1_disable, + .unprepare = hv101hd1_unprepare, + .get_modes = hv101hd1_get_modes, +}; + +static int hv101hd1_probe(struct mipi_dsi_device *dsi) +{ + struct device *dev = &dsi->dev; + struct hv101hd1 *hv; + int ret; + + hv = devm_drm_panel_alloc(dev, struct hv101hd1, panel, + &hv101hd1_panel_funcs, + DRM_MODE_CONNECTOR_DSI); + if (IS_ERR(hv)) + return PTR_ERR(hv); + + ret = devm_regulator_bulk_get_const(dev, ARRAY_SIZE(hv101hd1_supplies), + hv101hd1_supplies, &hv->supplies); + if (ret) + return dev_err_probe(dev, ret, "failed to get regulators\n"); + + hv->dsi = dsi; + mipi_dsi_set_drvdata(dsi, hv); + + dsi->lanes = 2; + dsi->format = MIPI_DSI_FMT_RGB888; + dsi->mode_flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_LPM; + + ret = drm_panel_of_backlight(&hv->panel); + if (ret) + return dev_err_probe(dev, ret, "Failed to get backlight\n"); + + drm_panel_add(&hv->panel); + + ret = mipi_dsi_attach(dsi); + if (ret) { + drm_panel_remove(&hv->panel); + return dev_err_probe(dev, ret, "Failed to attach to DSI host\n"); + } + + return 0; +} + +static void hv101hd1_remove(struct mipi_dsi_device *dsi) +{ + struct hv101hd1 *hv = 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(&hv->panel); +} + +static const struct of_device_id hv101hd1_of_match[] = { + { .compatible = "hydis,hv101hd1" }, + { /* sentinel */ } +}; +MODULE_DEVICE_TABLE(of, hv101hd1_of_match); + +static struct mipi_dsi_driver hv101hd1_driver = { + .driver = { + .name = "panel-hv101hd1", + .of_match_table = hv101hd1_of_match, + }, + .probe = hv101hd1_probe, + .remove = hv101hd1_remove, +}; +module_mipi_dsi_driver(hv101hd1_driver); + +MODULE_AUTHOR("Svyatoslav Ryhel <clamor95@gmail.com>"); +MODULE_DESCRIPTION("DRM driver for Hydis HV101HD1 panel"); +MODULE_LICENSE("GPL"); |