1 // SPDX-License-Identifier: GPL-2.0+
64 #define DSI_CMD2_BK0_PORCTRL_B0(m)	((m)->vtotal - (m)->vsync_end)
65 #define DSI_CMD2_BK0_PORCTRL_B1(m)	((m)->vsync_start - (m)->vdisplay)
81 #define DSI_PWCTLR2_AVCL		0x0    /* AVCL -4.4v */
100 	struct drm_panel panel;  member
109 static inline struct st7701 *panel_to_st7701(struct drm_panel *panel)  in panel_to_st7701()  argument
111 	return container_of(panel, struct st7701, panel);  in panel_to_st7701()
117 	return mipi_dsi_dcs_write_buffer(st7701->dsi, seq, len);  in st7701_dsi_write()
128 	const struct drm_display_mode *mode = st7701->desc->mode;  in st7701_init_sequence()
137 	msleep(st7701->sleep_delay);  in st7701_init_sequence()
172 	 * specific command sequence, so grab the same from vendor BSP driver.  in st7701_init_sequence()
197 static int st7701_prepare(struct drm_panel *panel)  in st7701_prepare()  argument
199 	struct st7701 *st7701 = panel_to_st7701(panel);  in st7701_prepare()
202 	gpiod_set_value(st7701->reset, 0);  in st7701_prepare()
204 	ret = regulator_bulk_enable(st7701->desc->num_supplies,  in st7701_prepare()
205 				    st7701->supplies);  in st7701_prepare()
210 	gpiod_set_value(st7701->reset, 1);  in st7701_prepare()
218 static int st7701_enable(struct drm_panel *panel)  in st7701_enable()  argument
220 	struct st7701 *st7701 = panel_to_st7701(panel);  in st7701_enable()
227 static int st7701_disable(struct drm_panel *panel)  in st7701_disable()  argument
229 	struct st7701 *st7701 = panel_to_st7701(panel);  in st7701_disable()
236 static int st7701_unprepare(struct drm_panel *panel)  in st7701_unprepare()  argument
238 	struct st7701 *st7701 = panel_to_st7701(panel);  in st7701_unprepare()
242 	msleep(st7701->sleep_delay);  in st7701_unprepare()
244 	gpiod_set_value(st7701->reset, 0);  in st7701_unprepare()
255 	msleep(st7701->sleep_delay);  in st7701_unprepare()
257 	regulator_bulk_disable(st7701->desc->num_supplies, st7701->supplies);  in st7701_unprepare()
262 static int st7701_get_modes(struct drm_panel *panel,  in st7701_get_modes()  argument
265 	struct st7701 *st7701 = panel_to_st7701(panel);  in st7701_get_modes()
266 	const struct drm_display_mode *desc_mode = st7701->desc->mode;  in st7701_get_modes()
269 	mode = drm_mode_duplicate(connector->dev, desc_mode);  in st7701_get_modes()
271 		dev_err(&st7701->dsi->dev, "failed to add mode %ux%u@%u\n",  in st7701_get_modes()
272 			desc_mode->hdisplay, desc_mode->vdisplay,  in st7701_get_modes()
274 		return -ENOMEM;  in st7701_get_modes()
280 	connector->display_info.width_mm = desc_mode->width_mm;  in st7701_get_modes()
281 	connector->display_info.height_mm = desc_mode->height_mm;  in st7701_get_modes()
325 	.panel_sleep_delay = 80, /* panel need extra 80ms for sleep out cmd */
334 	st7701 = devm_kzalloc(&dsi->dev, sizeof(*st7701), GFP_KERNEL);  in st7701_dsi_probe()
336 		return -ENOMEM;  in st7701_dsi_probe()
338 	desc = of_device_get_match_data(&dsi->dev);  in st7701_dsi_probe()
339 	dsi->mode_flags = desc->flags;  in st7701_dsi_probe()
340 	dsi->format = desc->format;  in st7701_dsi_probe()
341 	dsi->lanes = desc->lanes;  in st7701_dsi_probe()
343 	st7701->supplies = devm_kcalloc(&dsi->dev, desc->num_supplies,  in st7701_dsi_probe()
344 					sizeof(*st7701->supplies),  in st7701_dsi_probe()
346 	if (!st7701->supplies)  in st7701_dsi_probe()
347 		return -ENOMEM;  in st7701_dsi_probe()
349 	for (i = 0; i < desc->num_supplies; i++)  in st7701_dsi_probe()
350 		st7701->supplies[i].supply = desc->supply_names[i];  in st7701_dsi_probe()
352 	ret = devm_regulator_bulk_get(&dsi->dev, desc->num_supplies,  in st7701_dsi_probe()
353 				      st7701->supplies);  in st7701_dsi_probe()
357 	st7701->reset = devm_gpiod_get(&dsi->dev, "reset", GPIOD_OUT_LOW);  in st7701_dsi_probe()
358 	if (IS_ERR(st7701->reset)) {  in st7701_dsi_probe()
359 		dev_err(&dsi->dev, "Couldn't get our reset GPIO\n");  in st7701_dsi_probe()
360 		return PTR_ERR(st7701->reset);  in st7701_dsi_probe()
363 	drm_panel_init(&st7701->panel, &dsi->dev, &st7701_funcs,  in st7701_dsi_probe()
371 	 * add panel specific delay for those cases. As now this panel specific  in st7701_dsi_probe()
372 	 * delay information is referenced from those panel BSP driver, example  in st7701_dsi_probe()
375 	st7701->sleep_delay = 120 + desc->panel_sleep_delay;  in st7701_dsi_probe()
377 	ret = drm_panel_of_backlight(&st7701->panel);  in st7701_dsi_probe()
381 	drm_panel_add(&st7701->panel);  in st7701_dsi_probe()
384 	st7701->dsi = dsi;  in st7701_dsi_probe()
385 	st7701->desc = desc;  in st7701_dsi_probe()
395 	drm_panel_remove(&st7701->panel);  in st7701_dsi_remove()
417 MODULE_DESCRIPTION("Sitronix ST7701 LCD Panel Driver");