diff options
Diffstat (limited to 'drivers/gpu/drm/panel/panel-lincolntech-lcd197.c')
| -rw-r--r-- | drivers/gpu/drm/panel/panel-lincolntech-lcd197.c | 262 |
1 files changed, 262 insertions, 0 deletions
diff --git a/drivers/gpu/drm/panel/panel-lincolntech-lcd197.c b/drivers/gpu/drm/panel/panel-lincolntech-lcd197.c new file mode 100644 index 000000000000..032c542aab0f --- /dev/null +++ b/drivers/gpu/drm/panel/panel-lincolntech-lcd197.c @@ -0,0 +1,262 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (C) 2024 BayLibre, SAS + * Author: Jerome Brunet <jbrunet@baylibre.com> + */ + +#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_device.h> +#include <drm/drm_probe_helper.h> +#include <drm/drm_mipi_dsi.h> +#include <drm/drm_modes.h> +#include <drm/drm_panel.h> + +struct lincoln_lcd197_panel { + struct drm_panel panel; + struct mipi_dsi_device *dsi; + struct regulator *supply; + struct gpio_desc *enable_gpio; + struct gpio_desc *reset_gpio; +}; + +static inline +struct lincoln_lcd197_panel *to_lincoln_lcd197_panel(struct drm_panel *panel) +{ + return container_of(panel, struct lincoln_lcd197_panel, panel); +} + +static int lincoln_lcd197_panel_prepare(struct drm_panel *panel) +{ + struct lincoln_lcd197_panel *lcd = to_lincoln_lcd197_panel(panel); + struct mipi_dsi_multi_context ctx = { .dsi = lcd->dsi }; + int err; + + gpiod_set_value_cansleep(lcd->enable_gpio, 0); + err = regulator_enable(lcd->supply); + if (err < 0) + return err; + + gpiod_set_value_cansleep(lcd->enable_gpio, 1); + usleep_range(1000, 2000); + gpiod_set_value_cansleep(lcd->reset_gpio, 1); + usleep_range(5000, 6000); + gpiod_set_value_cansleep(lcd->reset_gpio, 0); + msleep(50); + + mipi_dsi_dcs_write_seq_multi(&ctx, 0xb9, 0xff, 0x83, 0x99); + mipi_dsi_dcs_write_seq_multi(&ctx, 0xd2, 0x55); + mipi_dsi_dcs_write_seq_multi(&ctx, 0xb1, 0x02, 0x04, 0x70, 0x90, 0x01, + 0x32, 0x33, 0x11, 0x11, 0x4d, 0x57, 0x56, 0x73, + 0x02, 0x02); + mipi_dsi_dcs_write_seq_multi(&ctx, 0xb2, 0x00, 0x80, 0x80, 0xae, 0x0a, + 0x0e, 0x75, 0x11, 0x00, 0x00, 0x00); + mipi_dsi_dcs_write_seq_multi(&ctx, 0xb4, 0x00, 0xff, 0x04, 0xa4, 0x02, + 0xa0, 0x00, 0x00, 0x10, 0x00, 0x00, 0x02, 0x00, + 0x24, 0x02, 0x04, 0x0a, 0x21, 0x03, 0x00, 0x00, + 0x08, 0xa6, 0x88, 0x04, 0xa4, 0x02, 0xa0, 0x00, + 0x00, 0x10, 0x00, 0x00, 0x02, 0x00, 0x24, 0x02, + 0x04, 0x0a, 0x00, 0x00, 0x08, 0xa6, 0x00, 0x08, + 0x11); + mipi_dsi_dcs_write_seq_multi(&ctx, 0xd3, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x18, 0x18, 0x32, 0x10, 0x09, 0x00, 0x09, + 0x32, 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x11, 0x00, 0x02, 0x02, 0x03, 0x00, + 0x00, 0x00, 0x0a, 0x40); + mipi_dsi_dcs_write_seq_multi(&ctx, 0xd5, 0x18, 0x18, 0x18, 0x18, 0x21, + 0x20, 0x18, 0x18, 0x19, 0x19, 0x19, 0x19, 0x18, + 0x18, 0x18, 0x18, 0x03, 0x02, 0x01, 0x00, 0x2f, + 0x2f, 0x30, 0x30, 0x31, 0x31, 0x18, 0x18, 0x18, + 0x18, 0x18, 0x18); + mipi_dsi_dcs_write_seq_multi(&ctx, 0xd6, 0x18, 0x18, 0x18, 0x18, 0x20, + 0x21, 0x19, 0x19, 0x18, 0x18, 0x19, 0x19, 0x18, + 0x18, 0x18, 0x18, 0x00, 0x01, 0x02, 0x03, 0x2f, + 0x2f, 0x30, 0x30, 0x31, 0x31, 0x18, 0x18, 0x18, + 0x18, 0x18, 0x18); + mipi_dsi_dcs_write_seq_multi(&ctx, 0xbd, 0x01); + mipi_dsi_dcs_write_seq_multi(&ctx, 0xd8, 0x0a, 0xbe, 0xfa, 0xa0, 0x0a, + 0xbe, 0xfa, 0xa0); + mipi_dsi_dcs_write_seq_multi(&ctx, 0xd8, 0x0f, 0xff, 0xff, 0xe0, 0x0f, + 0xff, 0xff, 0xe0); + mipi_dsi_dcs_write_seq_multi(&ctx, 0xbd, 0x02); + mipi_dsi_dcs_write_seq_multi(&ctx, 0xd8, 0x0f, 0xff, 0xff, 0xe0, 0x0f, + 0xff, 0xff, 0xe0); + mipi_dsi_dcs_write_seq_multi(&ctx, 0xe0, 0x01, 0x11, 0x1c, 0x17, 0x39, + 0x43, 0x54, 0x51, 0x5a, 0x64, 0x6c, 0x74, 0x7a, + 0x83, 0x8d, 0x92, 0x99, 0xa4, 0xa9, 0xb4, 0xaa, + 0xba, 0xbe, 0x63, 0x5e, 0x69, 0x73, 0x01, 0x11, + 0x1c, 0x17, 0x39, 0x43, 0x54, 0x51, 0x5a, 0x64, + 0x6c, 0x74, 0x7a, 0x83, 0x8d, 0x92, 0x99, 0xa4, + 0xa7, 0xb2, 0xa9, 0xba, 0xbe, 0x63, 0x5e, 0x69, + 0x73); + mipi_dsi_usleep_range(&ctx, 200, 300); + mipi_dsi_dcs_write_seq_multi(&ctx, 0xb6, 0x92, 0x92); + mipi_dsi_dcs_write_seq_multi(&ctx, 0xcc, 0x00); + mipi_dsi_dcs_write_seq_multi(&ctx, 0xbf, 0x40, 0x41, 0x50, 0x49); + mipi_dsi_dcs_write_seq_multi(&ctx, 0xc6, 0xff, 0xf9); + mipi_dsi_dcs_write_seq_multi(&ctx, 0xc0, 0x25, 0x5a); + mipi_dsi_dcs_write_seq_multi(&ctx, MIPI_DCS_SET_ADDRESS_MODE, 0x02); + mipi_dsi_dcs_exit_sleep_mode_multi(&ctx); + mipi_dsi_msleep(&ctx, 120); + + if (ctx.accum_err) { + gpiod_set_value_cansleep(lcd->enable_gpio, 0); + gpiod_set_value_cansleep(lcd->reset_gpio, 1); + regulator_disable(lcd->supply); + } + + return ctx.accum_err; +} + +static int lincoln_lcd197_panel_unprepare(struct drm_panel *panel) +{ + struct lincoln_lcd197_panel *lcd = to_lincoln_lcd197_panel(panel); + struct mipi_dsi_multi_context ctx = { .dsi = lcd->dsi }; + + mipi_dsi_dcs_enter_sleep_mode_multi(&ctx); + mipi_dsi_usleep_range(&ctx, 5000, 6000); + gpiod_set_value_cansleep(lcd->enable_gpio, 0); + gpiod_set_value_cansleep(lcd->reset_gpio, 1); + regulator_disable(lcd->supply); + + return ctx.accum_err; +} + +static int lincoln_lcd197_panel_enable(struct drm_panel *panel) +{ + struct lincoln_lcd197_panel *lcd = to_lincoln_lcd197_panel(panel); + struct mipi_dsi_multi_context ctx = { .dsi = lcd->dsi }; + + mipi_dsi_dcs_set_display_on_multi(&ctx); + mipi_dsi_msleep(&ctx, 20); + + return ctx.accum_err; +} + +static int lincoln_lcd197_panel_disable(struct drm_panel *panel) +{ + struct lincoln_lcd197_panel *lcd = to_lincoln_lcd197_panel(panel); + struct mipi_dsi_multi_context ctx = { .dsi = lcd->dsi }; + + mipi_dsi_dcs_set_display_off_multi(&ctx); + mipi_dsi_msleep(&ctx, 50); + + return ctx.accum_err; +} + +static const struct drm_display_mode lcd197_mode = { + .clock = 154002, + .hdisplay = 1080, + .hsync_start = 1080 + 20, + .hsync_end = 1080 + 20 + 6, + .htotal = 1080 + 204, + .vdisplay = 1920, + .vsync_start = 1920 + 4, + .vsync_end = 1920 + 4 + 4, + .vtotal = 1920 + 79, + .flags = DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC, + .width_mm = 79, + .height_mm = 125, + .type = DRM_MODE_TYPE_DRIVER, +}; + +static int lincoln_lcd197_panel_get_modes(struct drm_panel *panel, + struct drm_connector *connector) +{ + return drm_connector_helper_get_modes_fixed(connector, &lcd197_mode); +} + +static const struct drm_panel_funcs lincoln_lcd197_panel_funcs = { + .prepare = lincoln_lcd197_panel_prepare, + .unprepare = lincoln_lcd197_panel_unprepare, + .enable = lincoln_lcd197_panel_enable, + .disable = lincoln_lcd197_panel_disable, + .get_modes = lincoln_lcd197_panel_get_modes, +}; + +static int lincoln_lcd197_panel_probe(struct mipi_dsi_device *dsi) +{ + struct lincoln_lcd197_panel *lcd; + struct device *dev = &dsi->dev; + int err; + + dsi->lanes = 4; + dsi->format = MIPI_DSI_FMT_RGB888; + dsi->mode_flags = (MIPI_DSI_MODE_VIDEO | + MIPI_DSI_MODE_VIDEO_BURST); + + lcd = devm_kzalloc(&dsi->dev, sizeof(*lcd), GFP_KERNEL); + if (!lcd) + return -ENOMEM; + + mipi_dsi_set_drvdata(dsi, lcd); + lcd->dsi = dsi; + + lcd->supply = devm_regulator_get(dev, "power"); + if (IS_ERR(lcd->supply)) + return dev_err_probe(dev, PTR_ERR(lcd->supply), + "failed to get power supply"); + + lcd->enable_gpio = devm_gpiod_get(dev, "enable", + GPIOD_OUT_HIGH); + if (IS_ERR(lcd->enable_gpio)) + return dev_err_probe(dev, PTR_ERR(lcd->enable_gpio), + "failed to get enable gpio"); + + lcd->reset_gpio = devm_gpiod_get(dev, "reset", + GPIOD_OUT_HIGH); + if (IS_ERR(lcd->reset_gpio)) + return dev_err_probe(dev, PTR_ERR(lcd->reset_gpio), + "failed to get reset gpio"); + + drm_panel_init(&lcd->panel, dev, + &lincoln_lcd197_panel_funcs, DRM_MODE_CONNECTOR_DSI); + + err = drm_panel_of_backlight(&lcd->panel); + if (err) + return err; + + drm_panel_add(&lcd->panel); + err = mipi_dsi_attach(dsi); + if (err) + drm_panel_remove(&lcd->panel); + + return err; +} + +static void lincoln_lcd197_panel_remove(struct mipi_dsi_device *dsi) +{ + struct lincoln_lcd197_panel *lcd = mipi_dsi_get_drvdata(dsi); + int err; + + err = mipi_dsi_detach(dsi); + if (err < 0) + dev_err(&dsi->dev, "failed to detach from DSI host: %d\n", err); + + drm_panel_remove(&lcd->panel); +} + +static const struct of_device_id lincoln_lcd197_of_match[] = { + { .compatible = "lincolntech,lcd197", }, + { /* sentinel */ } +}; +MODULE_DEVICE_TABLE(of, lincoln_lcd197_of_match); + +static struct mipi_dsi_driver lincoln_lcd197_panel_driver = { + .driver = { + .name = "panel-lincolntech-lcd197", + .of_match_table = lincoln_lcd197_of_match, + }, + .probe = lincoln_lcd197_panel_probe, + .remove = lincoln_lcd197_panel_remove, +}; +module_mipi_dsi_driver(lincoln_lcd197_panel_driver); + +MODULE_AUTHOR("Jerome Brunet <jbrunet@baylibre.com>"); +MODULE_DESCRIPTION("Lincoln Technologies LCD197 panel driver"); +MODULE_LICENSE("GPL"); |