Author | Tokens | Token Proportion | Commits | Commit Proportion |
---|---|---|---|---|
Heiko Stübner | 1433 | 95.22% | 2 | 20.00% |
Chris Morgan | 22 | 1.46% | 2 | 20.00% |
Sam Ravnborg | 16 | 1.06% | 1 | 10.00% |
Hsin-Yi, Wang | 15 | 1.00% | 1 | 10.00% |
Javier Martinez Canillas | 13 | 0.86% | 1 | 10.00% |
Ville Syrjälä | 4 | 0.27% | 1 | 10.00% |
Uwe Kleine-König | 1 | 0.07% | 1 | 10.00% |
Nicolas Boichat | 1 | 0.07% | 1 | 10.00% |
Total | 1505 | 10 |
// SPDX-License-Identifier: GPL-2.0 /* * Elida kd35t133 3.5" MIPI-DSI panel driver * Copyright (C) 2020 Theobroma Systems Design und Consulting GmbH * * based on * * Rockteck jh057n00900 5.5" MIPI-DSI panel driver * Copyright (C) Purism SPC 2019 */ #include <linux/delay.h> #include <linux/gpio/consumer.h> #include <linux/media-bus-format.h> #include <linux/module.h> #include <linux/of.h> #include <linux/regulator/consumer.h> #include <video/display_timing.h> #include <video/mipi_display.h> #include <drm/drm_mipi_dsi.h> #include <drm/drm_modes.h> #include <drm/drm_panel.h> /* Manufacturer specific Commands send via DSI */ #define KD35T133_CMD_INTERFACEMODECTRL 0xb0 #define KD35T133_CMD_FRAMERATECTRL 0xb1 #define KD35T133_CMD_DISPLAYINVERSIONCTRL 0xb4 #define KD35T133_CMD_DISPLAYFUNCTIONCTRL 0xb6 #define KD35T133_CMD_POWERCONTROL1 0xc0 #define KD35T133_CMD_POWERCONTROL2 0xc1 #define KD35T133_CMD_VCOMCONTROL 0xc5 #define KD35T133_CMD_POSITIVEGAMMA 0xe0 #define KD35T133_CMD_NEGATIVEGAMMA 0xe1 #define KD35T133_CMD_SETIMAGEFUNCTION 0xe9 #define KD35T133_CMD_ADJUSTCONTROL3 0xf7 struct kd35t133 { struct device *dev; struct drm_panel panel; struct gpio_desc *reset_gpio; struct regulator *vdd; struct regulator *iovcc; enum drm_panel_orientation orientation; }; static inline struct kd35t133 *panel_to_kd35t133(struct drm_panel *panel) { return container_of(panel, struct kd35t133, panel); } static int kd35t133_init_sequence(struct kd35t133 *ctx) { struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev); struct device *dev = ctx->dev; /* * Init sequence was supplied by the panel vendor with minimal * documentation. */ mipi_dsi_dcs_write_seq(dsi, KD35T133_CMD_POSITIVEGAMMA, 0x00, 0x13, 0x18, 0x04, 0x0f, 0x06, 0x3a, 0x56, 0x4d, 0x03, 0x0a, 0x06, 0x30, 0x3e, 0x0f); mipi_dsi_dcs_write_seq(dsi, KD35T133_CMD_NEGATIVEGAMMA, 0x00, 0x13, 0x18, 0x01, 0x11, 0x06, 0x38, 0x34, 0x4d, 0x06, 0x0d, 0x0b, 0x31, 0x37, 0x0f); mipi_dsi_dcs_write_seq(dsi, KD35T133_CMD_POWERCONTROL1, 0x18, 0x17); mipi_dsi_dcs_write_seq(dsi, KD35T133_CMD_POWERCONTROL2, 0x41); mipi_dsi_dcs_write_seq(dsi, KD35T133_CMD_VCOMCONTROL, 0x00, 0x1a, 0x80); mipi_dsi_dcs_write_seq(dsi, MIPI_DCS_SET_ADDRESS_MODE, 0x48); mipi_dsi_dcs_write_seq(dsi, MIPI_DCS_SET_PIXEL_FORMAT, 0x55); mipi_dsi_dcs_write_seq(dsi, KD35T133_CMD_INTERFACEMODECTRL, 0x00); mipi_dsi_dcs_write_seq(dsi, KD35T133_CMD_FRAMERATECTRL, 0xa0); mipi_dsi_dcs_write_seq(dsi, KD35T133_CMD_DISPLAYINVERSIONCTRL, 0x02); mipi_dsi_dcs_write_seq(dsi, KD35T133_CMD_DISPLAYFUNCTIONCTRL, 0x20, 0x02); mipi_dsi_dcs_write_seq(dsi, KD35T133_CMD_SETIMAGEFUNCTION, 0x00); mipi_dsi_dcs_write_seq(dsi, KD35T133_CMD_ADJUSTCONTROL3, 0xa9, 0x51, 0x2c, 0x82); mipi_dsi_dcs_write(dsi, MIPI_DCS_ENTER_INVERT_MODE, NULL, 0); dev_dbg(dev, "Panel init sequence done\n"); return 0; } static int kd35t133_unprepare(struct drm_panel *panel) { struct kd35t133 *ctx = panel_to_kd35t133(panel); struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev); int ret; ret = mipi_dsi_dcs_set_display_off(dsi); if (ret < 0) dev_err(ctx->dev, "failed to set display off: %d\n", ret); ret = mipi_dsi_dcs_enter_sleep_mode(dsi); if (ret < 0) { dev_err(ctx->dev, "failed to enter sleep mode: %d\n", ret); return ret; } gpiod_set_value_cansleep(ctx->reset_gpio, 1); regulator_disable(ctx->iovcc); regulator_disable(ctx->vdd); return 0; } static int kd35t133_prepare(struct drm_panel *panel) { struct kd35t133 *ctx = panel_to_kd35t133(panel); struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev); int ret; dev_dbg(ctx->dev, "Resetting the panel\n"); ret = regulator_enable(ctx->vdd); if (ret < 0) { dev_err(ctx->dev, "Failed to enable vdd supply: %d\n", ret); return ret; } ret = regulator_enable(ctx->iovcc); if (ret < 0) { dev_err(ctx->dev, "Failed to enable iovcc supply: %d\n", ret); goto disable_vdd; } msleep(20); gpiod_set_value_cansleep(ctx->reset_gpio, 1); usleep_range(10, 20); gpiod_set_value_cansleep(ctx->reset_gpio, 0); msleep(20); ret = mipi_dsi_dcs_exit_sleep_mode(dsi); if (ret < 0) { dev_err(ctx->dev, "Failed to exit sleep mode: %d\n", ret); goto disable_iovcc; } msleep(250); ret = kd35t133_init_sequence(ctx); if (ret < 0) { dev_err(ctx->dev, "Panel init sequence failed: %d\n", ret); goto disable_iovcc; } ret = mipi_dsi_dcs_set_display_on(dsi); if (ret < 0) { dev_err(ctx->dev, "Failed to set display on: %d\n", ret); goto disable_iovcc; } msleep(50); return 0; disable_iovcc: regulator_disable(ctx->iovcc); disable_vdd: regulator_disable(ctx->vdd); return ret; } static const struct drm_display_mode default_mode = { .hdisplay = 320, .hsync_start = 320 + 130, .hsync_end = 320 + 130 + 4, .htotal = 320 + 130 + 4 + 130, .vdisplay = 480, .vsync_start = 480 + 2, .vsync_end = 480 + 2 + 1, .vtotal = 480 + 2 + 1 + 2, .clock = 17000, .width_mm = 42, .height_mm = 82, }; static int kd35t133_get_modes(struct drm_panel *panel, struct drm_connector *connector) { struct kd35t133 *ctx = panel_to_kd35t133(panel); struct drm_display_mode *mode; mode = drm_mode_duplicate(connector->dev, &default_mode); if (!mode) { dev_err(ctx->dev, "Failed to add mode %ux%u@%u\n", default_mode.hdisplay, default_mode.vdisplay, drm_mode_vrefresh(&default_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 enum drm_panel_orientation kd35t133_get_orientation(struct drm_panel *panel) { struct kd35t133 *ctx = panel_to_kd35t133(panel); return ctx->orientation; } static const struct drm_panel_funcs kd35t133_funcs = { .unprepare = kd35t133_unprepare, .prepare = kd35t133_prepare, .get_modes = kd35t133_get_modes, .get_orientation = kd35t133_get_orientation, }; static int kd35t133_probe(struct mipi_dsi_device *dsi) { struct device *dev = &dsi->dev; struct kd35t133 *ctx; int ret; ctx = devm_kzalloc(dev, sizeof(*ctx), GFP_KERNEL); if (!ctx) return -ENOMEM; ctx->reset_gpio = devm_gpiod_get_optional(dev, "reset", GPIOD_OUT_LOW); if (IS_ERR(ctx->reset_gpio)) { dev_err(dev, "cannot get reset gpio\n"); return PTR_ERR(ctx->reset_gpio); } ctx->vdd = devm_regulator_get(dev, "vdd"); if (IS_ERR(ctx->vdd)) { ret = PTR_ERR(ctx->vdd); if (ret != -EPROBE_DEFER) dev_err(dev, "Failed to request vdd regulator: %d\n", ret); return ret; } ctx->iovcc = devm_regulator_get(dev, "iovcc"); if (IS_ERR(ctx->iovcc)) { ret = PTR_ERR(ctx->iovcc); if (ret != -EPROBE_DEFER) dev_err(dev, "Failed to request iovcc regulator: %d\n", ret); return ret; } ret = of_drm_get_panel_orientation(dev->of_node, &ctx->orientation); if (ret < 0) { dev_err(dev, "%pOF: failed to get orientation %d\n", dev->of_node, ret); return ret; } mipi_dsi_set_drvdata(dsi, ctx); ctx->dev = dev; dsi->lanes = 1; dsi->format = MIPI_DSI_FMT_RGB888; dsi->mode_flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_VIDEO_BURST | MIPI_DSI_MODE_LPM | MIPI_DSI_MODE_NO_EOT_PACKET | MIPI_DSI_CLOCK_NON_CONTINUOUS; drm_panel_init(&ctx->panel, &dsi->dev, &kd35t133_funcs, DRM_MODE_CONNECTOR_DSI); ret = drm_panel_of_backlight(&ctx->panel); if (ret) return ret; drm_panel_add(&ctx->panel); ret = mipi_dsi_attach(dsi); if (ret < 0) { dev_err(dev, "mipi_dsi_attach failed: %d\n", ret); drm_panel_remove(&ctx->panel); return ret; } return 0; } static void kd35t133_remove(struct mipi_dsi_device *dsi) { struct kd35t133 *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 kd35t133_of_match[] = { { .compatible = "elida,kd35t133" }, { /* sentinel */ } }; MODULE_DEVICE_TABLE(of, kd35t133_of_match); static struct mipi_dsi_driver kd35t133_driver = { .driver = { .name = "panel-elida-kd35t133", .of_match_table = kd35t133_of_match, }, .probe = kd35t133_probe, .remove = kd35t133_remove, }; module_mipi_dsi_driver(kd35t133_driver); MODULE_AUTHOR("Heiko Stuebner <heiko.stuebner@theobroma-systems.com>"); MODULE_DESCRIPTION("DRM driver for Elida kd35t133 MIPI DSI panel"); MODULE_LICENSE("GPL v2");
Information contained on this website is for historical information purposes only and does not indicate or represent copyright ownership.
Created with Cregit http://github.com/cregit/cregit
Version 2.0-RC1