diff options
Diffstat (limited to 'drivers/gpu/drm/panel/panel-sharp-lq079l1sx01.c')
| -rw-r--r-- | drivers/gpu/drm/panel/panel-sharp-lq079l1sx01.c | 225 |
1 files changed, 225 insertions, 0 deletions
diff --git a/drivers/gpu/drm/panel/panel-sharp-lq079l1sx01.c b/drivers/gpu/drm/panel/panel-sharp-lq079l1sx01.c new file mode 100644 index 000000000000..8c00fde1c4a9 --- /dev/null +++ b/drivers/gpu/drm/panel/panel-sharp-lq079l1sx01.c @@ -0,0 +1,225 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Copyright (c) 2016 XiaoMi, Inc. + * Copyright (c) 2024 Svyatoslav Ryhel <clamor95@gmail.com> + */ + +#include <linux/delay.h> +#include <linux/gpio/consumer.h> +#include <linux/module.h> +#include <linux/of.h> +#include <linux/of_graph.h> +#include <linux/regulator/consumer.h> + +#include <video/mipi_display.h> + +#include <drm/drm_connector.h> +#include <drm/drm_crtc.h> +#include <drm/drm_device.h> +#include <drm/drm_mipi_dsi.h> +#include <drm/drm_modes.h> +#include <drm/drm_panel.h> +#include <drm/drm_probe_helper.h> + +static const struct regulator_bulk_data sharp_supplies[] = { + { .supply = "avdd" }, { .supply = "vddio" }, + { .supply = "vsp" }, { .supply = "vsn" }, +}; + +struct sharp_panel { + struct drm_panel panel; + struct mipi_dsi_device *dsi[2]; + + struct gpio_desc *reset_gpio; + struct regulator_bulk_data *supplies; + + const struct drm_display_mode *mode; +}; + +static inline struct sharp_panel *to_sharp_panel(struct drm_panel *panel) +{ + return container_of(panel, struct sharp_panel, panel); +} + +static void sharp_panel_reset(struct sharp_panel *sharp) +{ + gpiod_set_value_cansleep(sharp->reset_gpio, 1); + usleep_range(2000, 3000); + gpiod_set_value_cansleep(sharp->reset_gpio, 0); + usleep_range(2000, 3000); +} + +static int sharp_panel_prepare(struct drm_panel *panel) +{ + struct sharp_panel *sharp = to_sharp_panel(panel); + struct device *dev = panel->dev; + struct mipi_dsi_device *dsi0 = sharp->dsi[0]; + struct mipi_dsi_device *dsi1 = sharp->dsi[1]; + struct mipi_dsi_multi_context dsi_ctx = { .dsi = NULL }; + int ret; + + ret = regulator_bulk_enable(ARRAY_SIZE(sharp_supplies), sharp->supplies); + if (ret) { + dev_err(dev, "error enabling regulators (%d)\n", ret); + return ret; + } + + msleep(24); + + if (sharp->reset_gpio) + sharp_panel_reset(sharp); + + msleep(32); + + mipi_dsi_dual_dcs_write_seq_multi(&dsi_ctx, dsi0, dsi1, MIPI_DCS_EXIT_SLEEP_MODE); + mipi_dsi_msleep(&dsi_ctx, 120); + + mipi_dsi_dual_dcs_write_seq_multi(&dsi_ctx, dsi0, dsi1, + MIPI_DCS_SET_DISPLAY_BRIGHTNESS, 0xff); + mipi_dsi_dual_dcs_write_seq_multi(&dsi_ctx, dsi0, dsi1, + MIPI_DCS_WRITE_POWER_SAVE, 0x01); + mipi_dsi_dual_dcs_write_seq_multi(&dsi_ctx, dsi0, dsi1, + MIPI_DCS_WRITE_CONTROL_DISPLAY, 0x2c); + + mipi_dsi_dual_dcs_write_seq_multi(&dsi_ctx, dsi0, dsi1, MIPI_DCS_SET_DISPLAY_ON); + + return 0; +} + +static int sharp_panel_unprepare(struct drm_panel *panel) +{ + struct sharp_panel *sharp = to_sharp_panel(panel); + struct mipi_dsi_device *dsi0 = sharp->dsi[0]; + struct mipi_dsi_device *dsi1 = sharp->dsi[1]; + struct mipi_dsi_multi_context dsi_ctx = { .dsi = NULL }; + + mipi_dsi_dual_dcs_write_seq_multi(&dsi_ctx, dsi0, dsi1, MIPI_DCS_SET_DISPLAY_OFF); + mipi_dsi_msleep(&dsi_ctx, 100); + mipi_dsi_dual_dcs_write_seq_multi(&dsi_ctx, dsi0, dsi1, MIPI_DCS_ENTER_SLEEP_MODE); + mipi_dsi_msleep(&dsi_ctx, 150); + + if (sharp->reset_gpio) + gpiod_set_value_cansleep(sharp->reset_gpio, 1); + + return regulator_bulk_disable(ARRAY_SIZE(sharp_supplies), sharp->supplies); +} + +static const struct drm_display_mode default_mode = { + .clock = (1536 + 136 + 28 + 28) * (2048 + 14 + 8 + 2) * 60 / 1000, + .hdisplay = 1536, + .hsync_start = 1536 + 136, + .hsync_end = 1536 + 136 + 28, + .htotal = 1536 + 136 + 28 + 28, + .vdisplay = 2048, + .vsync_start = 2048 + 14, + .vsync_end = 2048 + 14 + 8, + .vtotal = 2048 + 14 + 8 + 2, + .width_mm = 120, + .height_mm = 160, + .type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED, +}; + +static int sharp_panel_get_modes(struct drm_panel *panel, + struct drm_connector *connector) +{ + return drm_connector_helper_get_modes_fixed(connector, &default_mode); +} + +static const struct drm_panel_funcs sharp_panel_funcs = { + .unprepare = sharp_panel_unprepare, + .prepare = sharp_panel_prepare, + .get_modes = sharp_panel_get_modes, +}; + +static int sharp_panel_probe(struct mipi_dsi_device *dsi) +{ + const struct mipi_dsi_device_info info = { "sharp-link1", 0, NULL }; + struct device *dev = &dsi->dev; + struct device_node *dsi_r; + struct mipi_dsi_host *dsi_r_host; + struct sharp_panel *sharp; + int i, ret; + + sharp = devm_drm_panel_alloc(dev, struct sharp_panel, panel, + &sharp_panel_funcs, DRM_MODE_CONNECTOR_DSI); + if (IS_ERR(sharp)) + return PTR_ERR(sharp); + + ret = devm_regulator_bulk_get_const(dev, ARRAY_SIZE(sharp_supplies), + sharp_supplies, &sharp->supplies); + if (ret) + return dev_err_probe(dev, ret, "failed to get supplies\n"); + + sharp->reset_gpio = devm_gpiod_get_optional(dev, "reset", GPIOD_OUT_LOW); + if (IS_ERR(sharp->reset_gpio)) + return dev_err_probe(dev, PTR_ERR(sharp->reset_gpio), + "failed to get reset GPIO\n"); + + /* Panel is always connected to two DSI hosts, DSI0 is left, DSI1 is right */ + dsi_r = of_graph_get_remote_node(dsi->dev.of_node, 1, -1); + if (!dsi_r) + return dev_err_probe(dev, -ENODEV, "failed to find second DSI host node\n"); + + dsi_r_host = of_find_mipi_dsi_host_by_node(dsi_r); + of_node_put(dsi_r); + if (!dsi_r_host) + return dev_err_probe(dev, -EPROBE_DEFER, "cannot get secondary DSI host\n"); + + sharp->dsi[1] = devm_mipi_dsi_device_register_full(dev, dsi_r_host, &info); + if (IS_ERR(sharp->dsi[1])) + return dev_err_probe(dev, PTR_ERR(sharp->dsi[1]), + "second link registration failed\n"); + + sharp->dsi[0] = dsi; + mipi_dsi_set_drvdata(dsi, sharp); + + ret = drm_panel_of_backlight(&sharp->panel); + if (ret) + return dev_err_probe(dev, ret, "Failed to get backlight\n"); + + drm_panel_add(&sharp->panel); + + for (i = 0; i < ARRAY_SIZE(sharp->dsi); i++) { + if (!sharp->dsi[i]) + continue; + + sharp->dsi[i]->lanes = 4; + sharp->dsi[i]->format = MIPI_DSI_FMT_RGB888; + sharp->dsi[i]->mode_flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_LPM; + + ret = devm_mipi_dsi_attach(dev, sharp->dsi[i]); + if (ret < 0) { + drm_panel_remove(&sharp->panel); + return dev_err_probe(dev, ret, "failed to attach to DSI%d\n", i); + } + } + + return 0; +} + +static void sharp_panel_remove(struct mipi_dsi_device *dsi) +{ + struct sharp_panel *sharp = mipi_dsi_get_drvdata(dsi); + + drm_panel_remove(&sharp->panel); +} + +static const struct of_device_id sharp_of_match[] = { + { .compatible = "sharp,lq079l1sx01" }, + { } +}; +MODULE_DEVICE_TABLE(of, sharp_of_match); + +static struct mipi_dsi_driver sharp_panel_driver = { + .driver = { + .name = "panel-sharp-lq079l1sx01", + .of_match_table = sharp_of_match, + }, + .probe = sharp_panel_probe, + .remove = sharp_panel_remove, +}; +module_mipi_dsi_driver(sharp_panel_driver); + +MODULE_AUTHOR("Svyatoslav Ryhel <clamor95@gmail.com>"); +MODULE_DESCRIPTION("Sharp LQ079L1SX01 panel driver"); +MODULE_LICENSE("GPL"); |