1 // SPDX-License-Identifier: GPL-2.0-or-later
9  *		      Boris Brezillon <boris.brezillon@free-electrons.com>
12  * Copyright (C) 2010-2011 Freescale Semiconductor, Inc. All Rights Reserved.
16 #include <linux/i2c-mux.h>
29 #include <sound/hdmi-codec.h>
158 	(SII902X_TPI_MISC_INFOFRAME_END - SII902X_TPI_MISC_INFOFRAME_BASE)
167 	struct drm_bridge bridge;  member
188 	ret = __i2c_smbus_xfer(i2c->adapter, i2c->addr, i2c->flags,  in sii902x_read_unlocked()
204 	return __i2c_smbus_xfer(i2c->adapter, i2c->addr, i2c->flags,  in sii902x_write_unlocked()
223 static inline struct sii902x *bridge_to_sii902x(struct drm_bridge *bridge)  in bridge_to_sii902x()  argument
225 	return container_of(bridge, struct sii902x, bridge);  in bridge_to_sii902x()
235 	if (!sii902x->reset_gpio)  in sii902x_reset()
238 	gpiod_set_value(sii902x->reset_gpio, 1);  in sii902x_reset()
240 	/* The datasheet says treset-min = 100us. Make it 150us to be sure. */  in sii902x_reset()
243 	gpiod_set_value(sii902x->reset_gpio, 0);  in sii902x_reset()
252 	mutex_lock(&sii902x->mutex);  in sii902x_connector_detect()
254 	regmap_read(sii902x->regmap, SII902X_INT_STATUS, &status);  in sii902x_connector_detect()
256 	mutex_unlock(&sii902x->mutex);  in sii902x_connector_detect()
279 	mutex_lock(&sii902x->mutex);  in sii902x_get_modes()
281 	edid = drm_get_edid(connector, sii902x->i2cmux->adapter[0]);  in sii902x_get_modes()
291 	ret = drm_display_info_set_bus_formats(&connector->display_info,  in sii902x_get_modes()
296 	ret = regmap_update_bits(sii902x->regmap, SII902X_SYS_CTRL_DATA,  in sii902x_get_modes()
304 	mutex_unlock(&sii902x->mutex);  in sii902x_get_modes()
322 static void sii902x_bridge_disable(struct drm_bridge *bridge)  in sii902x_bridge_disable()  argument
324 	struct sii902x *sii902x = bridge_to_sii902x(bridge);  in sii902x_bridge_disable()
326 	mutex_lock(&sii902x->mutex);  in sii902x_bridge_disable()
328 	regmap_update_bits(sii902x->regmap, SII902X_SYS_CTRL_DATA,  in sii902x_bridge_disable()
332 	mutex_unlock(&sii902x->mutex);  in sii902x_bridge_disable()
335 static void sii902x_bridge_enable(struct drm_bridge *bridge)  in sii902x_bridge_enable()  argument
337 	struct sii902x *sii902x = bridge_to_sii902x(bridge);  in sii902x_bridge_enable()
339 	mutex_lock(&sii902x->mutex);  in sii902x_bridge_enable()
341 	regmap_update_bits(sii902x->regmap, SII902X_PWR_STATE_CTRL,  in sii902x_bridge_enable()
344 	regmap_update_bits(sii902x->regmap, SII902X_SYS_CTRL_DATA,  in sii902x_bridge_enable()
347 	mutex_unlock(&sii902x->mutex);  in sii902x_bridge_enable()
350 static void sii902x_bridge_mode_set(struct drm_bridge *bridge,  in sii902x_bridge_mode_set()  argument
354 	struct sii902x *sii902x = bridge_to_sii902x(bridge);  in sii902x_bridge_mode_set()
355 	struct regmap *regmap = sii902x->regmap;  in sii902x_bridge_mode_set()
358 	u16 pixel_clock_10kHz = adj->clock / 10;  in sii902x_bridge_mode_set()
365 	buf[4] = adj->hdisplay;  in sii902x_bridge_mode_set()
366 	buf[5] = adj->hdisplay >> 8;  in sii902x_bridge_mode_set()
367 	buf[6] = adj->vdisplay;  in sii902x_bridge_mode_set()
368 	buf[7] = adj->vdisplay >> 8;  in sii902x_bridge_mode_set()
374 	mutex_lock(&sii902x->mutex);  in sii902x_bridge_mode_set()
381 						       &sii902x->connector, adj);  in sii902x_bridge_mode_set()
395 			  buf + HDMI_INFOFRAME_HEADER_SIZE - 1,  in sii902x_bridge_mode_set()
399 	mutex_unlock(&sii902x->mutex);  in sii902x_bridge_mode_set()
402 static int sii902x_bridge_attach(struct drm_bridge *bridge,  in sii902x_bridge_attach()  argument
405 	struct sii902x *sii902x = bridge_to_sii902x(bridge);  in sii902x_bridge_attach()
406 	struct drm_device *drm = bridge->dev;  in sii902x_bridge_attach()
410 		DRM_ERROR("Fix bridge driver to make connector optional!");  in sii902x_bridge_attach()
411 		return -EINVAL;  in sii902x_bridge_attach()
414 	drm_connector_helper_add(&sii902x->connector,  in sii902x_bridge_attach()
418 		dev_err(&sii902x->i2c->dev,  in sii902x_bridge_attach()
420 		return -ENOTSUPP;  in sii902x_bridge_attach()
423 	ret = drm_connector_init(drm, &sii902x->connector,  in sii902x_bridge_attach()
429 	if (sii902x->i2c->irq > 0)  in sii902x_bridge_attach()
430 		sii902x->connector.polled = DRM_CONNECTOR_POLL_HPD;  in sii902x_bridge_attach()
432 		sii902x->connector.polled = DRM_CONNECTOR_POLL_CONNECT;  in sii902x_bridge_attach()
434 	drm_connector_attach_encoder(&sii902x->connector, bridge->encoder);  in sii902x_bridge_attach()
448 	struct device *dev = &sii902x->i2c->dev;  in sii902x_mute()
454 	return regmap_update_bits(sii902x->regmap,  in sii902x_mute()
470 		unsigned int d = abs(div - sii902x_mclk_div_table[i]);  in sii902x_select_mclk_div()
513 	if (daifmt->bit_clk_master || daifmt->frame_clk_master) {  in sii902x_audio_hw_params()
515 		return -EINVAL;  in sii902x_audio_hw_params()
518 	switch (daifmt->fmt) {  in sii902x_audio_hw_params()
531 			daifmt->fmt);  in sii902x_audio_hw_params()
532 		return -EINVAL;  in sii902x_audio_hw_params()
535 	if (daifmt->bit_clk_inv)  in sii902x_audio_hw_params()
540 	if (daifmt->frame_clk_inv)  in sii902x_audio_hw_params()
545 	if (params->channels > 2)  in sii902x_audio_hw_params()
550 	switch (params->sample_width) {  in sii902x_audio_hw_params()
563 			params->sample_width);  in sii902x_audio_hw_params()
564 		return -EINVAL;  in sii902x_audio_hw_params()
568 		if (params->sample_rate == sii902x_sample_freq[i].freq) {  in sii902x_audio_hw_params()
574 	ret = clk_prepare_enable(sii902x->audio.mclk);  in sii902x_audio_hw_params()
580 	if (sii902x->audio.mclk) {  in sii902x_audio_hw_params()
581 		mclk_rate = clk_get_rate(sii902x->audio.mclk);  in sii902x_audio_hw_params()
583 					      params->sample_rate, mclk_rate);  in sii902x_audio_hw_params()
584 		if (mclk_rate != ret * params->sample_rate)  in sii902x_audio_hw_params()
586 				mclk_rate, ret, params->sample_rate);  in sii902x_audio_hw_params()
589 	mutex_lock(&sii902x->mutex);  in sii902x_audio_hw_params()
591 	ret = regmap_write(sii902x->regmap,  in sii902x_audio_hw_params()
597 	ret = regmap_write(sii902x->regmap, SII902X_TPI_I2S_INPUT_CONFIG_REG,  in sii902x_audio_hw_params()
602 	for (i = 0; i < ARRAY_SIZE(sii902x->audio.i2s_fifo_sequence) &&  in sii902x_audio_hw_params()
603 		    sii902x->audio.i2s_fifo_sequence[i]; i++)  in sii902x_audio_hw_params()
604 		regmap_write(sii902x->regmap,  in sii902x_audio_hw_params()
606 			     sii902x->audio.i2s_fifo_sequence[i]);  in sii902x_audio_hw_params()
608 	ret = regmap_write(sii902x->regmap, SII902X_TPI_AUDIO_CONFIG_BYTE3_REG,  in sii902x_audio_hw_params()
613 	ret = regmap_bulk_write(sii902x->regmap, SII902X_TPI_I2S_STRM_HDR_BASE,  in sii902x_audio_hw_params()
614 				params->iec.status,  in sii902x_audio_hw_params()
616 				    sizeof(params->iec.status)));  in sii902x_audio_hw_params()
620 	ret = hdmi_audio_infoframe_pack(&params->cea, infoframe_buf,  in sii902x_audio_hw_params()
628 	ret = regmap_bulk_write(sii902x->regmap,  in sii902x_audio_hw_params()
636 	ret = regmap_write(sii902x->regmap, SII902X_IND_SET_PAGE, 0x02);  in sii902x_audio_hw_params()
640 	ret = regmap_write(sii902x->regmap, SII902X_IND_OFFSET, 0x24);  in sii902x_audio_hw_params()
644 	ret = regmap_write(sii902x->regmap, SII902X_IND_VALUE, 0x02);  in sii902x_audio_hw_params()
648 	dev_dbg(dev, "%s: hdmi audio enabled\n", __func__);  in sii902x_audio_hw_params()
650 	mutex_unlock(&sii902x->mutex);  in sii902x_audio_hw_params()
653 		clk_disable_unprepare(sii902x->audio.mclk);  in sii902x_audio_hw_params()
654 		dev_err(dev, "%s: hdmi audio enable failed: %d\n", __func__,  in sii902x_audio_hw_params()
665 	mutex_lock(&sii902x->mutex);  in sii902x_audio_shutdown()
667 	regmap_write(sii902x->regmap, SII902X_TPI_AUDIO_CONFIG_BYTE2_REG,  in sii902x_audio_shutdown()
670 	mutex_unlock(&sii902x->mutex);  in sii902x_audio_shutdown()
672 	clk_disable_unprepare(sii902x->audio.mclk);  in sii902x_audio_shutdown()
680 	mutex_lock(&sii902x->mutex);  in sii902x_audio_mute()
684 	mutex_unlock(&sii902x->mutex);  in sii902x_audio_mute()
694 	mutex_lock(&sii902x->mutex);  in sii902x_audio_get_eld()
696 	memcpy(buf, sii902x->connector.eld,  in sii902x_audio_get_eld()
697 	       min(sizeof(sii902x->connector.eld), len));  in sii902x_audio_get_eld()
699 	mutex_unlock(&sii902x->mutex);  in sii902x_audio_get_eld()
715 	 * HDMI sound should be located at reg = <3>  in sii902x_audio_get_dai_id()
721 	return -EINVAL;  in sii902x_audio_get_dai_id()
757 	if (!of_property_read_bool(dev->of_node, "#sound-dai-cells")) {  in sii902x_audio_codec_init()
758 		dev_dbg(dev, "%s: No \"#sound-dai-cells\", no audio\n",  in sii902x_audio_codec_init()
763 	num_lanes = of_property_read_variable_u8_array(dev->of_node,  in sii902x_audio_codec_init()
764 						       "sil,i2s-data-lanes",  in sii902x_audio_codec_init()
768 	if (num_lanes == -EINVAL) {  in sii902x_audio_codec_init()
770 			"%s: No \"sil,i2s-data-lanes\", use default <0>\n",  in sii902x_audio_codec_init()
776 			"%s: Error gettin \"sil,i2s-data-lanes\": %d\n",  in sii902x_audio_codec_init()
783 		sii902x->audio.i2s_fifo_sequence[i] |= audio_fifo_id[i] |  in sii902x_audio_codec_init()
786 	sii902x->audio.mclk = devm_clk_get_optional(dev, "mclk");  in sii902x_audio_codec_init()
787 	if (IS_ERR(sii902x->audio.mclk)) {  in sii902x_audio_codec_init()
789 			__func__, PTR_ERR(sii902x->audio.mclk));  in sii902x_audio_codec_init()
790 		return PTR_ERR(sii902x->audio.mclk);  in sii902x_audio_codec_init()
793 	sii902x->audio.pdev = platform_device_register_data(  in sii902x_audio_codec_init()
797 	return PTR_ERR_OR_ZERO(sii902x->audio.pdev);  in sii902x_audio_codec_init()
823 	mutex_lock(&sii902x->mutex);  in sii902x_interrupt()
825 	regmap_read(sii902x->regmap, SII902X_INT_STATUS, &status);  in sii902x_interrupt()
826 	regmap_write(sii902x->regmap, SII902X_INT_STATUS, status);  in sii902x_interrupt()
828 	mutex_unlock(&sii902x->mutex);  in sii902x_interrupt()
830 	if ((status & SII902X_HOTPLUG_EVENT) && sii902x->bridge.dev)  in sii902x_interrupt()
831 		drm_helper_hpd_irq_event(sii902x->bridge.dev);  in sii902x_interrupt()
838  * mode of the HDMI transmitter. Do not use regmap from within this function,
851 	struct device *dev = &sii902x->i2c->dev;  in sii902x_i2c_bypass_select()
856 	ret = sii902x_update_bits_unlocked(sii902x->i2c, SII902X_SYS_CTRL_DATA,  in sii902x_i2c_bypass_select()
865 		ret = sii902x_read_unlocked(sii902x->i2c, SII902X_SYS_CTRL_DATA,  in sii902x_i2c_bypass_select()
874 		return -ETIMEDOUT;  in sii902x_i2c_bypass_select()
877 	return sii902x_write_unlocked(sii902x->i2c, SII902X_SYS_CTRL_DATA,  in sii902x_i2c_bypass_select()
883  * mode of the HDMI transmitter. Do not use regmap from within this function,
896 	struct device *dev = &sii902x->i2c->dev;  in sii902x_i2c_bypass_deselect()
903 	 * When the HDMI transmitter is in pass through mode, we need an  in sii902x_i2c_bypass_deselect()
916 		ret = sii902x_read_unlocked(sii902x->i2c, SII902X_SYS_CTRL_DATA,  in sii902x_i2c_bypass_deselect()
918 		retries--;  in sii902x_i2c_bypass_deselect()
925 	ret = sii902x_update_bits_unlocked(sii902x->i2c, SII902X_SYS_CTRL_DATA,  in sii902x_i2c_bypass_deselect()
934 		ret = sii902x_read_unlocked(sii902x->i2c, SII902X_SYS_CTRL_DATA,  in sii902x_i2c_bypass_deselect()
945 		return -ETIMEDOUT;  in sii902x_i2c_bypass_deselect()
960 	struct device *dev = &client->dev;  in sii902x_probe()
966 	ret = i2c_check_functionality(client->adapter,  in sii902x_probe()
970 		return -EIO;  in sii902x_probe()
975 		return -ENOMEM;  in sii902x_probe()
977 	sii902x->i2c = client;  in sii902x_probe()
978 	sii902x->regmap = devm_regmap_init_i2c(client, &sii902x_regmap_config);  in sii902x_probe()
979 	if (IS_ERR(sii902x->regmap))  in sii902x_probe()
980 		return PTR_ERR(sii902x->regmap);  in sii902x_probe()
982 	sii902x->reset_gpio = devm_gpiod_get_optional(dev, "reset",  in sii902x_probe()
984 	if (IS_ERR(sii902x->reset_gpio)) {  in sii902x_probe()
986 			PTR_ERR(sii902x->reset_gpio));  in sii902x_probe()
987 		return PTR_ERR(sii902x->reset_gpio);  in sii902x_probe()
990 	mutex_init(&sii902x->mutex);  in sii902x_probe()
994 	ret = regmap_write(sii902x->regmap, SII902X_REG_TPI_RQB, 0x0);  in sii902x_probe()
998 	ret = regmap_bulk_read(sii902x->regmap, SII902X_REG_CHIPID(0),  in sii902x_probe()
1008 		return -EINVAL;  in sii902x_probe()
1012 	regmap_read(sii902x->regmap, SII902X_INT_STATUS, &status);  in sii902x_probe()
1013 	regmap_write(sii902x->regmap, SII902X_INT_STATUS, status);  in sii902x_probe()
1015 	if (client->irq > 0) {  in sii902x_probe()
1016 		regmap_write(sii902x->regmap, SII902X_INT_ENABLE,  in sii902x_probe()
1019 		ret = devm_request_threaded_irq(dev, client->irq, NULL,  in sii902x_probe()
1027 	sii902x->bridge.funcs = &sii902x_bridge_funcs;  in sii902x_probe()
1028 	sii902x->bridge.of_node = dev->of_node;  in sii902x_probe()
1029 	sii902x->bridge.timings = &default_sii902x_timings;  in sii902x_probe()
1030 	drm_bridge_add(&sii902x->bridge);  in sii902x_probe()
1036 	sii902x->i2cmux = i2c_mux_alloc(client->adapter, dev,  in sii902x_probe()
1040 	if (!sii902x->i2cmux)  in sii902x_probe()
1041 		return -ENOMEM;  in sii902x_probe()
1043 	sii902x->i2cmux->priv = sii902x;  in sii902x_probe()
1044 	return i2c_mux_add_adapter(sii902x->i2cmux, 0, 0, 0);  in sii902x_probe()
1052 	i2c_mux_del_adapters(sii902x->i2cmux);  in sii902x_remove()
1053 	drm_bridge_remove(&sii902x->bridge);  in sii902x_remove()
1081 MODULE_AUTHOR("Boris Brezillon <boris.brezillon@free-electrons.com>");
1082 MODULE_DESCRIPTION("SII902x RGB -> HDMI bridges");