131 static int s6e63m0_clear_error(struct s6e63m0 *ctx)  in s6e63m0_clear_error()  argument
133 	int ret = ctx->error;  in s6e63m0_clear_error()
135 	ctx->error = 0;  in s6e63m0_clear_error()
139 static int s6e63m0_spi_write_word(struct s6e63m0 *ctx, u16 data)  in s6e63m0_spi_write_word()  argument
141 	struct spi_device *spi = to_spi_device(ctx->dev);  in s6e63m0_spi_write_word()
154 static void s6e63m0_dcs_write(struct s6e63m0 *ctx, const u8 *data, size_t len)  in s6e63m0_dcs_write()  argument
158 	if (ctx->error < 0 || len == 0)  in s6e63m0_dcs_write()
161 	DRM_DEV_DEBUG(ctx->dev, "writing dcs seq: %*ph\n", (int)len, data);  in s6e63m0_dcs_write()
162 	ret = s6e63m0_spi_write_word(ctx, *data);  in s6e63m0_dcs_write()
166 		ret = s6e63m0_spi_write_word(ctx, *data | DATA_MASK);  in s6e63m0_dcs_write()
170 		DRM_DEV_ERROR(ctx->dev, "error %d writing dcs seq: %*ph\n", ret,  in s6e63m0_dcs_write()
172 		ctx->error = ret;  in s6e63m0_dcs_write()
178 #define s6e63m0_dcs_write_seq_static(ctx, seq ...) \  argument
181 		s6e63m0_dcs_write(ctx, d, ARRAY_SIZE(d)); \
184 static void s6e63m0_init(struct s6e63m0 *ctx)  in s6e63m0_init()  argument
186 	s6e63m0_dcs_write_seq_static(ctx, MCS_PANELCTL,  in s6e63m0_init()
190 	s6e63m0_dcs_write_seq_static(ctx, MCS_DISCTL,  in s6e63m0_init()
192 	s6e63m0_dcs_write_seq_static(ctx, MCS_IFCTL,  in s6e63m0_init()
195 	s6e63m0_dcs_write_seq_static(ctx, MCS_PGAMMACTL,  in s6e63m0_init()
200 	s6e63m0_dcs_write_seq_static(ctx, MCS_PGAMMACTL,  in s6e63m0_init()
203 	s6e63m0_dcs_write_seq_static(ctx, MCS_SRCCTL,  in s6e63m0_init()
205 	s6e63m0_dcs_write_seq_static(ctx, 0xb3,  in s6e63m0_init()
208 	s6e63m0_dcs_write_seq_static(ctx, 0xb5,  in s6e63m0_init()
215 	s6e63m0_dcs_write_seq_static(ctx, 0xb6,  in s6e63m0_init()
220 	s6e63m0_dcs_write_seq_static(ctx, 0xb7,  in s6e63m0_init()
229 	s6e63m0_dcs_write_seq_static(ctx, 0xb9,  in s6e63m0_init()
236 	s6e63m0_dcs_write_seq_static(ctx, 0xba,  in s6e63m0_init()
241 	s6e63m0_dcs_write_seq_static(ctx, MCS_BCMODE,  in s6e63m0_init()
247 	s6e63m0_dcs_write_seq_static(ctx, 0xb2,  in s6e63m0_init()
250 	s6e63m0_dcs_write_seq_static(ctx, MCS_MIECTL1,  in s6e63m0_init()
253 	s6e63m0_dcs_write_seq_static(ctx, MCS_ELVSS_ON,  in s6e63m0_init()
256 	s6e63m0_dcs_write_seq_static(ctx, MIPI_DCS_EXIT_SLEEP_MODE);  in s6e63m0_init()
259 static int s6e63m0_power_on(struct s6e63m0 *ctx)  in s6e63m0_power_on()  argument
263 	ret = regulator_bulk_enable(ARRAY_SIZE(ctx->supplies), ctx->supplies);  in s6e63m0_power_on()
269 	gpiod_set_value(ctx->reset_gpio, 0);  in s6e63m0_power_on()
275 static int s6e63m0_power_off(struct s6e63m0 *ctx)  in s6e63m0_power_off()  argument
279 	gpiod_set_value(ctx->reset_gpio, 1);  in s6e63m0_power_off()
282 	ret = regulator_bulk_disable(ARRAY_SIZE(ctx->supplies), ctx->supplies);  in s6e63m0_power_off()
291 	struct s6e63m0 *ctx = panel_to_s6e63m0(panel);  in s6e63m0_disable()  local
293 	if (!ctx->enabled)  in s6e63m0_disable()
296 	backlight_disable(ctx->bl_dev);  in s6e63m0_disable()
298 	s6e63m0_dcs_write_seq_static(ctx, MIPI_DCS_ENTER_SLEEP_MODE);  in s6e63m0_disable()
301 	ctx->enabled = false;  in s6e63m0_disable()
308 	struct s6e63m0 *ctx = panel_to_s6e63m0(panel);  in s6e63m0_unprepare()  local
311 	if (!ctx->prepared)  in s6e63m0_unprepare()
314 	s6e63m0_clear_error(ctx);  in s6e63m0_unprepare()
316 	ret = s6e63m0_power_off(ctx);  in s6e63m0_unprepare()
320 	ctx->prepared = false;  in s6e63m0_unprepare()
327 	struct s6e63m0 *ctx = panel_to_s6e63m0(panel);  in s6e63m0_prepare()  local
330 	if (ctx->prepared)  in s6e63m0_prepare()
333 	ret = s6e63m0_power_on(ctx);  in s6e63m0_prepare()
337 	s6e63m0_init(ctx);  in s6e63m0_prepare()
339 	ret = s6e63m0_clear_error(ctx);  in s6e63m0_prepare()
344 	ctx->prepared = true;  in s6e63m0_prepare()
351 	struct s6e63m0 *ctx = panel_to_s6e63m0(panel);  in s6e63m0_enable()  local
353 	if (ctx->enabled)  in s6e63m0_enable()
356 	s6e63m0_dcs_write_seq_static(ctx, MIPI_DCS_SET_DISPLAY_ON);  in s6e63m0_enable()
358 	backlight_enable(ctx->bl_dev);  in s6e63m0_enable()
360 	ctx->enabled = true;  in s6e63m0_enable()
396 	struct s6e63m0 *ctx = bl_get_data(bd);  in s6e63m0_set_brightness()  local
401 	s6e63m0_dcs_write(ctx, s6e63m0_gamma_22[brightness],  in s6e63m0_set_brightness()
405 	s6e63m0_dcs_write_seq_static(ctx, MCS_PGAMMACTL, 0x01);  in s6e63m0_set_brightness()
407 	return s6e63m0_clear_error(ctx);  in s6e63m0_set_brightness()
414 static int s6e63m0_backlight_register(struct s6e63m0 *ctx)  in s6e63m0_backlight_register()  argument
421 	struct device *dev = ctx->dev;  in s6e63m0_backlight_register()
424 	ctx->bl_dev = devm_backlight_device_register(dev, "panel", dev, ctx,  in s6e63m0_backlight_register()
427 	if (IS_ERR(ctx->bl_dev)) {  in s6e63m0_backlight_register()
428 		ret = PTR_ERR(ctx->bl_dev);  in s6e63m0_backlight_register()
439 	struct s6e63m0 *ctx;  in s6e63m0_probe()  local
442 	ctx = devm_kzalloc(dev, sizeof(struct s6e63m0), GFP_KERNEL);  in s6e63m0_probe()
443 	if (!ctx)  in s6e63m0_probe()
446 	spi_set_drvdata(spi, ctx);  in s6e63m0_probe()
448 	ctx->dev = dev;  in s6e63m0_probe()
449 	ctx->enabled = false;  in s6e63m0_probe()
450 	ctx->prepared = false;  in s6e63m0_probe()
452 	ctx->supplies[0].supply = "vdd3";  in s6e63m0_probe()
453 	ctx->supplies[1].supply = "vci";  in s6e63m0_probe()
454 	ret = devm_regulator_bulk_get(dev, ARRAY_SIZE(ctx->supplies),  in s6e63m0_probe()
455 				      ctx->supplies);  in s6e63m0_probe()
461 	ctx->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_HIGH);  in s6e63m0_probe()
462 	if (IS_ERR(ctx->reset_gpio)) {  in s6e63m0_probe()
464 			      PTR_ERR(ctx->reset_gpio));  in s6e63m0_probe()
465 		return PTR_ERR(ctx->reset_gpio);  in s6e63m0_probe()
476 	drm_panel_init(&ctx->panel);  in s6e63m0_probe()
477 	ctx->panel.dev = dev;  in s6e63m0_probe()
478 	ctx->panel.funcs = &s6e63m0_drm_funcs;  in s6e63m0_probe()
480 	ret = s6e63m0_backlight_register(ctx);  in s6e63m0_probe()
484 	return drm_panel_add(&ctx->panel);  in s6e63m0_probe()
489 	struct s6e63m0 *ctx = spi_get_drvdata(spi);  in s6e63m0_remove()  local
491 	drm_panel_remove(&ctx->panel);  in s6e63m0_remove()