1 // SPDX-License-Identifier: GPL-2.0
26 #define MCS_PANSET	0xB3A6	/* Panel Type Setting */
28 #define MCS_P_DRV_M	0xC0B4	/* Panel Driving Mode */
36 #define MCS_PANCTRLSET1	0xCB80	/* Panel Control Setting 1 */
37 #define MCS_PANCTRLSET2	0xCB90	/* Panel Control Setting 2 */
38 #define MCS_PANCTRLSET3	0xCBA0	/* Panel Control Setting 3 */
39 #define MCS_PANCTRLSET4	0xCBB0	/* Panel Control Setting 4 */
40 #define MCS_PANCTRLSET5	0xCBC0	/* Panel Control Setting 5 */
41 #define MCS_PANCTRLSET6	0xCBD0	/* Panel Control Setting 6 */
42 #define MCS_PANCTRLSET7	0xCBE0	/* Panel Control Setting 7 */
43 #define MCS_PANCTRLSET8	0xCBF0	/* Panel Control Setting 8 */
44 #define MCS_PANU2D1	0xCC80	/* Panel U2D Setting 1 */
45 #define MCS_PANU2D2	0xCC90	/* Panel U2D Setting 2 */
46 #define MCS_PANU2D3	0xCCA0	/* Panel U2D Setting 3 */
47 #define MCS_PAND2U1	0xCCB0	/* Panel D2U Setting 1 */
48 #define MCS_PAND2U2	0xCCC0	/* Panel D2U Setting 2 */
49 #define MCS_PAND2U3	0xCCD0	/* Panel D2U Setting 3 */
58 #define MCS_GMCT2_2N	0xE200	/* Gamma Correction 2.2- Setting */
65 	struct drm_panel panel;  member
88 static inline struct otm8009a *panel_to_otm8009a(struct drm_panel *panel)  in panel_to_otm8009a()  argument
90 	return container_of(panel, struct otm8009a, panel);  in panel_to_otm8009a()
96 	struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);  in otm8009a_dcs_write_buf()  local
98 	if (mipi_dsi_dcs_write_buffer(dsi, data, len) < 0)  in otm8009a_dcs_write_buf()
99 		dev_warn(ctx->dev, "mipi dsi dcs write buffer failed\n");  in otm8009a_dcs_write_buf()
105 	struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);  in otm8009a_dcs_write_buf_hs()  local
107 	/* data will be sent in dsi hs mode (ie. no lpm) */  in otm8009a_dcs_write_buf_hs()
108 	dsi->mode_flags &= ~MIPI_DSI_MODE_LPM;  in otm8009a_dcs_write_buf_hs()
112 	/* restore back the dsi lpm mode */  in otm8009a_dcs_write_buf_hs()
113 	dsi->mode_flags |= MIPI_DSI_MODE_LPM;  in otm8009a_dcs_write_buf_hs()
130 	struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);  in otm8009a_init_sequence()  local
211 	ret = mipi_dsi_dcs_nop(dsi);  in otm8009a_init_sequence()
215 	ret = mipi_dsi_dcs_exit_sleep_mode(dsi);  in otm8009a_init_sequence()
225 	ret = mipi_dsi_dcs_set_column_address(dsi, 0,  in otm8009a_init_sequence()
226 					      default_mode.hdisplay - 1);  in otm8009a_init_sequence()
230 	ret = mipi_dsi_dcs_set_page_address(dsi, 0, default_mode.vdisplay - 1);  in otm8009a_init_sequence()
235 	ret = mipi_dsi_dcs_set_pixel_format(dsi, MIPI_DCS_PIXEL_FMT_24BIT |  in otm8009a_init_sequence()
243 	ret = mipi_dsi_dcs_set_display_on(dsi);  in otm8009a_init_sequence()
247 	ret = mipi_dsi_dcs_nop(dsi);  in otm8009a_init_sequence()
254 	/* Wait a short while to let the panel be ready before the 1st frame */  in otm8009a_init_sequence()
260 static int otm8009a_disable(struct drm_panel *panel)  in otm8009a_disable()  argument
262 	struct otm8009a *ctx = panel_to_otm8009a(panel);  in otm8009a_disable()
263 	struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);  in otm8009a_disable()  local
266 	if (!ctx->enabled)  in otm8009a_disable()
269 	backlight_disable(ctx->bl_dev);  in otm8009a_disable()
271 	ret = mipi_dsi_dcs_set_display_off(dsi);  in otm8009a_disable()
275 	ret = mipi_dsi_dcs_enter_sleep_mode(dsi);  in otm8009a_disable()
281 	ctx->enabled = false;  in otm8009a_disable()
286 static int otm8009a_unprepare(struct drm_panel *panel)  in otm8009a_unprepare()  argument
288 	struct otm8009a *ctx = panel_to_otm8009a(panel);  in otm8009a_unprepare()
290 	if (!ctx->prepared)  in otm8009a_unprepare()
293 	if (ctx->reset_gpio) {  in otm8009a_unprepare()
294 		gpiod_set_value_cansleep(ctx->reset_gpio, 1);  in otm8009a_unprepare()
298 	regulator_disable(ctx->supply);  in otm8009a_unprepare()
300 	ctx->prepared = false;  in otm8009a_unprepare()
305 static int otm8009a_prepare(struct drm_panel *panel)  in otm8009a_prepare()  argument
307 	struct otm8009a *ctx = panel_to_otm8009a(panel);  in otm8009a_prepare()
310 	if (ctx->prepared)  in otm8009a_prepare()
313 	ret = regulator_enable(ctx->supply);  in otm8009a_prepare()
315 		dev_err(panel->dev, "failed to enable supply: %d\n", ret);  in otm8009a_prepare()
319 	if (ctx->reset_gpio) {  in otm8009a_prepare()
320 		gpiod_set_value_cansleep(ctx->reset_gpio, 0);  in otm8009a_prepare()
321 		gpiod_set_value_cansleep(ctx->reset_gpio, 1);  in otm8009a_prepare()
323 		gpiod_set_value_cansleep(ctx->reset_gpio, 0);  in otm8009a_prepare()
331 	ctx->prepared = true;  in otm8009a_prepare()
336 static int otm8009a_enable(struct drm_panel *panel)  in otm8009a_enable()  argument
338 	struct otm8009a *ctx = panel_to_otm8009a(panel);  in otm8009a_enable()
340 	if (ctx->enabled)  in otm8009a_enable()
343 	backlight_enable(ctx->bl_dev);  in otm8009a_enable()
345 	ctx->enabled = true;  in otm8009a_enable()
350 static int otm8009a_get_modes(struct drm_panel *panel,  in otm8009a_get_modes()  argument
355 	mode = drm_mode_duplicate(connector->dev, &default_mode);  in otm8009a_get_modes()
357 		dev_err(panel->dev, "failed to add mode %ux%u@%u\n",  in otm8009a_get_modes()
360 		return -ENOMEM;  in otm8009a_get_modes()
365 	mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED;  in otm8009a_get_modes()
368 	connector->display_info.width_mm = mode->width_mm;  in otm8009a_get_modes()
369 	connector->display_info.height_mm = mode->height_mm;  in otm8009a_get_modes()
383  * DSI-BASED BACKLIGHT
391 	if (!ctx->prepared) {  in otm8009a_backlight_update_status()
392 		dev_dbg(&bd->dev, "lcd not ready yet for setting its backlight!\n");  in otm8009a_backlight_update_status()
393 		return -ENXIO;  in otm8009a_backlight_update_status()
396 	if (bd->props.power <= FB_BLANK_NORMAL) {  in otm8009a_backlight_update_status()
399 		 * as otm8009a driver support only 8-bit brightness (1 param).  in otm8009a_backlight_update_status()
402 		data[1] = bd->props.brightness;  in otm8009a_backlight_update_status()
424 static int otm8009a_probe(struct mipi_dsi_device *dsi)  in otm8009a_probe()  argument
426 	struct device *dev = &dsi->dev;  in otm8009a_probe()
432 		return -ENOMEM;  in otm8009a_probe()
434 	ctx->reset_gpio = devm_gpiod_get_optional(dev, "reset", GPIOD_OUT_LOW);  in otm8009a_probe()
435 	if (IS_ERR(ctx->reset_gpio)) {  in otm8009a_probe()
436 		dev_err(dev, "cannot get reset-gpio\n");  in otm8009a_probe()
437 		return PTR_ERR(ctx->reset_gpio);  in otm8009a_probe()
440 	ctx->supply = devm_regulator_get(dev, "power");  in otm8009a_probe()
441 	if (IS_ERR(ctx->supply)) {  in otm8009a_probe()
442 		ret = PTR_ERR(ctx->supply);  in otm8009a_probe()
443 		if (ret != -EPROBE_DEFER)  in otm8009a_probe()
448 	mipi_dsi_set_drvdata(dsi, ctx);  in otm8009a_probe()
450 	ctx->dev = dev;  in otm8009a_probe()
452 	dsi->lanes = 2;  in otm8009a_probe()
453 	dsi->format = MIPI_DSI_FMT_RGB888;  in otm8009a_probe()
454 	dsi->mode_flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_VIDEO_BURST |  in otm8009a_probe()
457 	drm_panel_init(&ctx->panel, dev, &otm8009a_drm_funcs,  in otm8009a_probe()
460 	ctx->bl_dev = devm_backlight_device_register(dev, dev_name(dev),  in otm8009a_probe()
461 						     dsi->host->dev, ctx,  in otm8009a_probe()
464 	if (IS_ERR(ctx->bl_dev)) {  in otm8009a_probe()
465 		ret = PTR_ERR(ctx->bl_dev);  in otm8009a_probe()
470 	ctx->bl_dev->props.max_brightness = OTM8009A_BACKLIGHT_MAX;  in otm8009a_probe()
471 	ctx->bl_dev->props.brightness = OTM8009A_BACKLIGHT_DEFAULT;  in otm8009a_probe()
472 	ctx->bl_dev->props.power = FB_BLANK_POWERDOWN;  in otm8009a_probe()
473 	ctx->bl_dev->props.type = BACKLIGHT_RAW;  in otm8009a_probe()
475 	drm_panel_add(&ctx->panel);  in otm8009a_probe()
477 	ret = mipi_dsi_attach(dsi);  in otm8009a_probe()
480 		drm_panel_remove(&ctx->panel);  in otm8009a_probe()
487 static int otm8009a_remove(struct mipi_dsi_device *dsi)  in otm8009a_remove()  argument
489 	struct otm8009a *ctx = mipi_dsi_get_drvdata(dsi);  in otm8009a_remove()
491 	mipi_dsi_detach(dsi);  in otm8009a_remove()
492 	drm_panel_remove(&ctx->panel);  in otm8009a_remove()
507 		.name = "panel-orisetech-otm8009a",
515 MODULE_DESCRIPTION("DRM driver for Orise Tech OTM8009A MIPI DSI panel");