174 struct sii902x {  struct
237 static inline struct sii902x *bridge_to_sii902x(struct drm_bridge *bridge)  in bridge_to_sii902x()
239 	return container_of(bridge, struct sii902x, bridge);  in bridge_to_sii902x()
242 static inline struct sii902x *connector_to_sii902x(struct drm_connector *con)  in connector_to_sii902x()
244 	return container_of(con, struct sii902x, connector);  in connector_to_sii902x()
247 static void sii902x_reset(struct sii902x *sii902x)  in sii902x_reset()  argument
249 	if (!sii902x->reset_gpio)  in sii902x_reset()
252 	gpiod_set_value_cansleep(sii902x->reset_gpio, 1);  in sii902x_reset()
257 	gpiod_set_value_cansleep(sii902x->reset_gpio, 0);  in sii902x_reset()
260 static enum drm_connector_status sii902x_detect(struct sii902x *sii902x)  in sii902x_detect()  argument
264 	mutex_lock(&sii902x->mutex);  in sii902x_detect()
266 	regmap_read(sii902x->regmap, SII902X_INT_STATUS, &status);  in sii902x_detect()
268 	mutex_unlock(&sii902x->mutex);  in sii902x_detect()
277 	struct sii902x *sii902x = connector_to_sii902x(connector);  in sii902x_connector_detect()  local
279 	return sii902x_detect(sii902x);  in sii902x_connector_detect()
291 static const struct drm_edid *sii902x_edid_read(struct sii902x *sii902x,  in sii902x_edid_read()  argument
296 	mutex_lock(&sii902x->mutex);  in sii902x_edid_read()
298 	drm_edid = drm_edid_read_ddc(connector, sii902x->i2cmux->adapter[0]);  in sii902x_edid_read()
300 	mutex_unlock(&sii902x->mutex);  in sii902x_edid_read()
307 	struct sii902x *sii902x = connector_to_sii902x(connector);  in sii902x_get_modes()  local
311 	drm_edid = sii902x_edid_read(sii902x, connector);  in sii902x_get_modes()
318 	sii902x->sink_is_hdmi = connector->display_info.is_hdmi;  in sii902x_get_modes()
330 	struct sii902x *sii902x = bridge_to_sii902x(bridge);  in sii902x_bridge_atomic_disable()  local
332 	mutex_lock(&sii902x->mutex);  in sii902x_bridge_atomic_disable()
334 	regmap_update_bits(sii902x->regmap, SII902X_SYS_CTRL_DATA,  in sii902x_bridge_atomic_disable()
338 	mutex_unlock(&sii902x->mutex);  in sii902x_bridge_atomic_disable()
344 	struct sii902x *sii902x = bridge_to_sii902x(bridge);  in sii902x_bridge_atomic_enable()  local
346 	mutex_lock(&sii902x->mutex);  in sii902x_bridge_atomic_enable()
348 	regmap_update_bits(sii902x->regmap, SII902X_PWR_STATE_CTRL,  in sii902x_bridge_atomic_enable()
351 	regmap_update_bits(sii902x->regmap, SII902X_SYS_CTRL_DATA,  in sii902x_bridge_atomic_enable()
354 	mutex_unlock(&sii902x->mutex);  in sii902x_bridge_atomic_enable()
361 	struct sii902x *sii902x = bridge_to_sii902x(bridge);  in sii902x_bridge_mode_set()  local
363 	struct regmap *regmap = sii902x->regmap;  in sii902x_bridge_mode_set()
369 	if (sii902x->sink_is_hdmi)  in sii902x_bridge_mode_set()
385 	mutex_lock(&sii902x->mutex);  in sii902x_bridge_mode_set()
387 	ret = regmap_update_bits(sii902x->regmap, SII902X_SYS_CTRL_DATA,  in sii902x_bridge_mode_set()
397 						       &sii902x->connector, adj);  in sii902x_bridge_mode_set()
415 	mutex_unlock(&sii902x->mutex);  in sii902x_bridge_mode_set()
422 	struct sii902x *sii902x = bridge_to_sii902x(bridge);  in sii902x_bridge_attach()  local
428 		return drm_bridge_attach(encoder, sii902x->next_bridge,  in sii902x_bridge_attach()
431 	drm_connector_helper_add(&sii902x->connector,  in sii902x_bridge_attach()
435 		dev_err(&sii902x->i2c->dev,  in sii902x_bridge_attach()
436 			"sii902x driver is only compatible with DRM devices supporting atomic updates\n");  in sii902x_bridge_attach()
440 	ret = drm_connector_init(drm, &sii902x->connector,  in sii902x_bridge_attach()
446 	if (sii902x->i2c->irq > 0)  in sii902x_bridge_attach()
447 		sii902x->connector.polled = DRM_CONNECTOR_POLL_HPD;  in sii902x_bridge_attach()
449 		sii902x->connector.polled = DRM_CONNECTOR_POLL_CONNECT;  in sii902x_bridge_attach()
451 	ret = drm_display_info_set_bus_formats(&sii902x->connector.display_info,  in sii902x_bridge_attach()
456 	drm_connector_attach_encoder(&sii902x->connector, encoder);  in sii902x_bridge_attach()
464 	struct sii902x *sii902x = bridge_to_sii902x(bridge);  in sii902x_bridge_detect()  local
466 	return sii902x_detect(sii902x);  in sii902x_bridge_detect()
472 	struct sii902x *sii902x = bridge_to_sii902x(bridge);  in sii902x_bridge_edid_read()  local
474 	return sii902x_edid_read(sii902x, connector);  in sii902x_bridge_edid_read()
485 	struct sii902x *sii902x = bridge_to_sii902x(bridge);  in sii902x_bridge_atomic_get_input_bus_fmts()  local
494 	switch (sii902x->bus_width) {  in sii902x_bridge_atomic_get_input_bus_fmts()
560 static int sii902x_mute(struct sii902x *sii902x, bool mute)  in sii902x_mute()  argument
562 	struct device *dev = &sii902x->i2c->dev;  in sii902x_mute()
568 	return regmap_update_bits(sii902x->regmap,  in sii902x_mute()
617 	struct sii902x *sii902x = dev_get_drvdata(dev);  in sii902x_audio_hw_params()  local
689 	ret = clk_prepare_enable(sii902x->audio.mclk);  in sii902x_audio_hw_params()
695 	if (sii902x->audio.mclk) {  in sii902x_audio_hw_params()
696 		mclk_rate = clk_get_rate(sii902x->audio.mclk);  in sii902x_audio_hw_params()
704 	mutex_lock(&sii902x->mutex);  in sii902x_audio_hw_params()
706 	ret = regmap_write(sii902x->regmap,  in sii902x_audio_hw_params()
712 	ret = regmap_write(sii902x->regmap, SII902X_TPI_I2S_INPUT_CONFIG_REG,  in sii902x_audio_hw_params()
717 	for (i = 0; i < ARRAY_SIZE(sii902x->audio.i2s_fifo_sequence) &&  in sii902x_audio_hw_params()
718 		    sii902x->audio.i2s_fifo_sequence[i]; i++)  in sii902x_audio_hw_params()
719 		regmap_write(sii902x->regmap,  in sii902x_audio_hw_params()
721 			     sii902x->audio.i2s_fifo_sequence[i]);  in sii902x_audio_hw_params()
723 	ret = regmap_write(sii902x->regmap, SII902X_TPI_AUDIO_CONFIG_BYTE3_REG,  in sii902x_audio_hw_params()
728 	ret = regmap_bulk_write(sii902x->regmap, SII902X_TPI_I2S_STRM_HDR_BASE,  in sii902x_audio_hw_params()
743 	ret = regmap_bulk_write(sii902x->regmap,  in sii902x_audio_hw_params()
751 	ret = regmap_write(sii902x->regmap, SII902X_IND_SET_PAGE, 0x02);  in sii902x_audio_hw_params()
755 	ret = regmap_write(sii902x->regmap, SII902X_IND_OFFSET, 0x24);  in sii902x_audio_hw_params()
759 	ret = regmap_write(sii902x->regmap, SII902X_IND_VALUE, 0x02);  in sii902x_audio_hw_params()
765 	mutex_unlock(&sii902x->mutex);  in sii902x_audio_hw_params()
768 		clk_disable_unprepare(sii902x->audio.mclk);  in sii902x_audio_hw_params()
778 	struct sii902x *sii902x = dev_get_drvdata(dev);  in sii902x_audio_shutdown()  local
780 	mutex_lock(&sii902x->mutex);  in sii902x_audio_shutdown()
782 	regmap_write(sii902x->regmap, SII902X_TPI_AUDIO_CONFIG_BYTE2_REG,  in sii902x_audio_shutdown()
785 	mutex_unlock(&sii902x->mutex);  in sii902x_audio_shutdown()
787 	clk_disable_unprepare(sii902x->audio.mclk);  in sii902x_audio_shutdown()
793 	struct sii902x *sii902x = dev_get_drvdata(dev);  in sii902x_audio_mute()  local
795 	mutex_lock(&sii902x->mutex);  in sii902x_audio_mute()
797 	sii902x_mute(sii902x, enable);  in sii902x_audio_mute()
799 	mutex_unlock(&sii902x->mutex);  in sii902x_audio_mute()
807 	struct sii902x *sii902x = dev_get_drvdata(dev);  in sii902x_audio_get_eld()  local
809 	mutex_lock(&sii902x->mutex);  in sii902x_audio_get_eld()
811 	memcpy(buf, sii902x->connector.eld,  in sii902x_audio_get_eld()
812 	       min(sizeof(sii902x->connector.eld), len));  in sii902x_audio_get_eld()
814 	mutex_unlock(&sii902x->mutex);  in sii902x_audio_get_eld()
848 static int sii902x_audio_codec_init(struct sii902x *sii902x,  in sii902x_audio_codec_init()  argument
899 		sii902x->audio.i2s_fifo_sequence[i] |= audio_fifo_id[i] |  in sii902x_audio_codec_init()
902 	sii902x->audio.mclk = devm_clk_get_optional(dev, "mclk");  in sii902x_audio_codec_init()
903 	if (IS_ERR(sii902x->audio.mclk)) {  in sii902x_audio_codec_init()
905 			__func__, PTR_ERR(sii902x->audio.mclk));  in sii902x_audio_codec_init()
906 		return PTR_ERR(sii902x->audio.mclk);  in sii902x_audio_codec_init()
909 	sii902x->audio.pdev = platform_device_register_data(  in sii902x_audio_codec_init()
913 	return PTR_ERR_OR_ZERO(sii902x->audio.pdev);  in sii902x_audio_codec_init()
928 	.disable_locking = true, /* struct sii902x mutex should be enough */
936 	struct sii902x *sii902x = data;  in sii902x_interrupt()  local
939 	mutex_lock(&sii902x->mutex);  in sii902x_interrupt()
941 	regmap_read(sii902x->regmap, SII902X_INT_STATUS, &status);  in sii902x_interrupt()
942 	regmap_write(sii902x->regmap, SII902X_INT_STATUS, status);  in sii902x_interrupt()
944 	mutex_unlock(&sii902x->mutex);  in sii902x_interrupt()
946 	if ((status & SII902X_HOTPLUG_EVENT) && sii902x->bridge.dev) {  in sii902x_interrupt()
947 		drm_helper_hpd_irq_event(sii902x->bridge.dev);  in sii902x_interrupt()
948 		drm_bridge_hpd_notify(&sii902x->bridge, (status & SII902X_PLUGGED_STATUS)  in sii902x_interrupt()
970 	struct sii902x *sii902x = i2c_mux_priv(mux);  in sii902x_i2c_bypass_select()  local
971 	struct device *dev = &sii902x->i2c->dev;  in sii902x_i2c_bypass_select()
976 	ret = sii902x_update_bits_unlocked(sii902x->i2c, SII902X_SYS_CTRL_DATA,  in sii902x_i2c_bypass_select()
985 		ret = sii902x_read_unlocked(sii902x->i2c, SII902X_SYS_CTRL_DATA,  in sii902x_i2c_bypass_select()
997 	return sii902x_write_unlocked(sii902x->i2c, SII902X_SYS_CTRL_DATA,  in sii902x_i2c_bypass_select()
1015 	struct sii902x *sii902x = i2c_mux_priv(mux);  in sii902x_i2c_bypass_deselect()  local
1016 	struct device *dev = &sii902x->i2c->dev;  in sii902x_i2c_bypass_deselect()
1036 		ret = sii902x_read_unlocked(sii902x->i2c, SII902X_SYS_CTRL_DATA,  in sii902x_i2c_bypass_deselect()
1045 	ret = sii902x_update_bits_unlocked(sii902x->i2c, SII902X_SYS_CTRL_DATA,  in sii902x_i2c_bypass_deselect()
1054 		ret = sii902x_read_unlocked(sii902x->i2c, SII902X_SYS_CTRL_DATA,  in sii902x_i2c_bypass_deselect()
1077 static int sii902x_init(struct sii902x *sii902x)  in sii902x_init()  argument
1079 	struct device *dev = &sii902x->i2c->dev;  in sii902x_init()
1084 	sii902x_reset(sii902x);  in sii902x_init()
1086 	ret = regmap_write(sii902x->regmap, SII902X_REG_TPI_RQB, 0x0);  in sii902x_init()
1090 	ret = regmap_bulk_read(sii902x->regmap, SII902X_REG_CHIPID(0),  in sii902x_init()
1104 	regmap_read(sii902x->regmap, SII902X_INT_STATUS, &status);  in sii902x_init()
1105 	regmap_write(sii902x->regmap, SII902X_INT_STATUS, status);  in sii902x_init()
1107 	if (sii902x->i2c->irq > 0) {  in sii902x_init()
1108 		regmap_write(sii902x->regmap, SII902X_INT_ENABLE,  in sii902x_init()
1111 		ret = devm_request_threaded_irq(dev, sii902x->i2c->irq, NULL,  in sii902x_init()
1114 						sii902x);  in sii902x_init()
1119 	ret = sii902x_audio_codec_init(sii902x, dev);  in sii902x_init()
1123 	i2c_set_clientdata(sii902x->i2c, sii902x);  in sii902x_init()
1125 	sii902x->i2cmux = i2c_mux_alloc(sii902x->i2c->adapter, dev,  in sii902x_init()
1129 	if (!sii902x->i2cmux) {  in sii902x_init()
1134 	sii902x->i2cmux->priv = sii902x;  in sii902x_init()
1135 	ret = i2c_mux_add_adapter(sii902x->i2cmux, 0, 0);  in sii902x_init()
1139 	sii902x->bridge.of_node = dev->of_node;  in sii902x_init()
1140 	sii902x->bridge.timings = &default_sii902x_timings;  in sii902x_init()
1141 	sii902x->bridge.ops = DRM_BRIDGE_OP_DETECT | DRM_BRIDGE_OP_EDID;  in sii902x_init()
1142 	sii902x->bridge.type = DRM_MODE_CONNECTOR_HDMIA;  in sii902x_init()
1144 	if (sii902x->i2c->irq > 0)  in sii902x_init()
1145 		sii902x->bridge.ops |= DRM_BRIDGE_OP_HPD;  in sii902x_init()
1147 	drm_bridge_add(&sii902x->bridge);  in sii902x_init()
1152 	if (!PTR_ERR_OR_ZERO(sii902x->audio.pdev))  in sii902x_init()
1153 		platform_device_unregister(sii902x->audio.pdev);  in sii902x_init()
1162 	struct sii902x *sii902x;  in sii902x_probe()  local
1173 	sii902x = devm_drm_bridge_alloc(dev, struct sii902x, bridge, &sii902x_bridge_funcs);  in sii902x_probe()
1174 	if (IS_ERR(sii902x))  in sii902x_probe()
1175 		return PTR_ERR(sii902x);  in sii902x_probe()
1177 	sii902x->i2c = client;  in sii902x_probe()
1178 	sii902x->regmap = devm_regmap_init_i2c(client, &sii902x_regmap_config);  in sii902x_probe()
1179 	if (IS_ERR(sii902x->regmap))  in sii902x_probe()
1180 		return PTR_ERR(sii902x->regmap);  in sii902x_probe()
1182 	sii902x->reset_gpio = devm_gpiod_get_optional(dev, "reset",  in sii902x_probe()
1184 	if (IS_ERR(sii902x->reset_gpio)) {  in sii902x_probe()
1186 			PTR_ERR(sii902x->reset_gpio));  in sii902x_probe()
1187 		return PTR_ERR(sii902x->reset_gpio);  in sii902x_probe()
1190 	sii902x->bus_width = 24;  in sii902x_probe()
1193 		of_property_read_u32(endpoint, "bus-width", &sii902x->bus_width);  in sii902x_probe()
1211 		sii902x->next_bridge = of_drm_find_bridge(remote);  in sii902x_probe()
1213 		if (!sii902x->next_bridge)  in sii902x_probe()
1218 	mutex_init(&sii902x->mutex);  in sii902x_probe()
1224 	return sii902x_init(sii902x);  in sii902x_probe()
1229 	struct sii902x *sii902x = i2c_get_clientdata(client);  in sii902x_remove()  local
1231 	drm_bridge_remove(&sii902x->bridge);  in sii902x_remove()
1232 	i2c_mux_del_adapters(sii902x->i2cmux);  in sii902x_remove()
1234 	if (!PTR_ERR_OR_ZERO(sii902x->audio.pdev))  in sii902x_remove()
1235 		platform_device_unregister(sii902x->audio.pdev);  in sii902x_remove()
1254 		.name = "sii902x",
1262 MODULE_DESCRIPTION("SII902x RGB -> HDMI bridges");