Lines Matching +full:i2c +full:- +full:remote +full:- +full:bus +full:- +full:hz
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>
17 #include <linux/i2c.h>
18 #include <linux/media-bus-format.h>
31 #include <sound/hdmi-codec.h>
160 (SII902X_TPI_MISC_INFOFRAME_END - SII902X_TPI_MISC_INFOFRAME_BASE)
167 * The maximum resolution supported by the HDMI bridge is 1080p@60Hz
169 * resolution supported is 480p@60Hz requiring a pixel clock of 25MHz
175 struct i2c_client *i2c; member
187 * each other, by keeping their i2c command sequences atomic.
197 static int sii902x_read_unlocked(struct i2c_client *i2c, u8 reg, u8 *val) in sii902x_read_unlocked() argument
202 ret = __i2c_smbus_xfer(i2c->adapter, i2c->addr, i2c->flags, in sii902x_read_unlocked()
212 static int sii902x_write_unlocked(struct i2c_client *i2c, u8 reg, u8 val) in sii902x_write_unlocked() argument
218 return __i2c_smbus_xfer(i2c->adapter, i2c->addr, i2c->flags, in sii902x_write_unlocked()
223 static int sii902x_update_bits_unlocked(struct i2c_client *i2c, u8 reg, u8 mask, in sii902x_update_bits_unlocked() argument
229 ret = sii902x_read_unlocked(i2c, reg, &status); in sii902x_update_bits_unlocked()
234 return sii902x_write_unlocked(i2c, reg, status); in sii902x_update_bits_unlocked()
249 if (!sii902x->reset_gpio) in sii902x_reset()
252 gpiod_set_value_cansleep(sii902x->reset_gpio, 1); in sii902x_reset()
254 /* The datasheet says treset-min = 100us. Make it 150us to be sure. */ in sii902x_reset()
257 gpiod_set_value_cansleep(sii902x->reset_gpio, 0); in sii902x_reset()
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()
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()
318 sii902x->sink_is_hdmi = connector->display_info.is_hdmi; in sii902x_get_modes()
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()
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()
363 struct regmap *regmap = sii902x->regmap; in sii902x_bridge_mode_set()
366 u16 pixel_clock_10kHz = adj->clock / 10; in sii902x_bridge_mode_set()
369 if (sii902x->sink_is_hdmi) in sii902x_bridge_mode_set()
376 buf[4] = adj->hdisplay; in sii902x_bridge_mode_set()
377 buf[5] = adj->hdisplay >> 8; in sii902x_bridge_mode_set()
378 buf[6] = adj->vdisplay; in sii902x_bridge_mode_set()
379 buf[7] = adj->vdisplay >> 8; 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()
411 buf + HDMI_INFOFRAME_HEADER_SIZE - 1, in sii902x_bridge_mode_set()
415 mutex_unlock(&sii902x->mutex); in sii902x_bridge_mode_set()
424 struct drm_device *drm = bridge->dev; in sii902x_bridge_attach()
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()
437 return -ENOTSUPP; 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()
494 switch (sii902x->bus_width) { in sii902x_bridge_atomic_get_input_bus_fmts()
518 if (crtc_state->mode.clock < SII902X_MIN_PIXEL_CLOCK_KHZ || in sii902x_bridge_atomic_check()
519 crtc_state->mode.clock > SII902X_MAX_PIXEL_CLOCK_KHZ) in sii902x_bridge_atomic_check()
520 return -EINVAL; in sii902x_bridge_atomic_check()
524 * set the bus flags in atomic_check statically for now. in sii902x_bridge_atomic_check()
526 bridge_state->input_bus_cfg.flags = bridge->timings->input_bus_flags; in sii902x_bridge_atomic_check()
536 if (mode->clock < SII902X_MIN_PIXEL_CLOCK_KHZ) in sii902x_bridge_mode_valid()
539 if (mode->clock > SII902X_MAX_PIXEL_CLOCK_KHZ) in sii902x_bridge_mode_valid()
562 struct device *dev = &sii902x->i2c->dev; in sii902x_mute()
568 return regmap_update_bits(sii902x->regmap, in sii902x_mute()
584 unsigned int d = abs(div - sii902x_mclk_div_table[i]); in sii902x_select_mclk_div()
627 if (daifmt->bit_clk_provider || daifmt->frame_clk_provider) { in sii902x_audio_hw_params()
630 return -EINVAL; in sii902x_audio_hw_params()
633 switch (daifmt->fmt) { in sii902x_audio_hw_params()
646 daifmt->fmt); in sii902x_audio_hw_params()
647 return -EINVAL; in sii902x_audio_hw_params()
650 if (daifmt->bit_clk_inv) in sii902x_audio_hw_params()
655 if (daifmt->frame_clk_inv) in sii902x_audio_hw_params()
660 if (params->channels > 2) in sii902x_audio_hw_params()
665 switch (params->sample_width) { in sii902x_audio_hw_params()
678 params->sample_width); in sii902x_audio_hw_params()
679 return -EINVAL; in sii902x_audio_hw_params()
683 if (params->sample_rate == sii902x_sample_freq[i].freq) { in sii902x_audio_hw_params()
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()
698 params->sample_rate, mclk_rate); in sii902x_audio_hw_params()
699 if (mclk_rate != ret * params->sample_rate) in sii902x_audio_hw_params()
701 mclk_rate, ret, params->sample_rate); 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()
729 params->iec.status, in sii902x_audio_hw_params()
731 sizeof(params->iec.status))); in sii902x_audio_hw_params()
735 ret = hdmi_audio_infoframe_pack(¶ms->cea, infoframe_buf, 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()
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()
795 mutex_lock(&sii902x->mutex); in sii902x_audio_mute()
799 mutex_unlock(&sii902x->mutex); in sii902x_audio_mute()
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()
837 return -EINVAL; in sii902x_audio_get_dai_id()
873 if (!of_property_present(dev->of_node, "#sound-dai-cells")) { in sii902x_audio_codec_init()
874 dev_dbg(dev, "%s: No \"#sound-dai-cells\", no audio\n", in sii902x_audio_codec_init()
879 num_lanes = of_property_read_variable_u8_array(dev->of_node, in sii902x_audio_codec_init()
880 "sil,i2s-data-lanes", in sii902x_audio_codec_init()
884 if (num_lanes == -EINVAL) { in sii902x_audio_codec_init()
886 "%s: No \"sil,i2s-data-lanes\", use default <0>\n", in sii902x_audio_codec_init()
892 "%s: Error getting \"sil,i2s-data-lanes\": %d\n", in sii902x_audio_codec_init()
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()
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()
961 * adding more i2c transactions.
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()
993 dev_err(dev, "Failed to acquire the i2c bus\n"); in sii902x_i2c_bypass_select()
994 return -ETIMEDOUT; in sii902x_i2c_bypass_select()
997 return sii902x_write_unlocked(sii902x->i2c, SII902X_SYS_CTRL_DATA, in sii902x_i2c_bypass_select()
1006 * adding more i2c transactions.
1016 struct device *dev = &sii902x->i2c->dev; in sii902x_i2c_bypass_deselect()
1025 * to guarantee the bus won't get stuck. in sii902x_i2c_bypass_deselect()
1030 * Sometimes the I2C bus can stall after failure to use the in sii902x_i2c_bypass_deselect()
1036 ret = sii902x_read_unlocked(sii902x->i2c, SII902X_SYS_CTRL_DATA, in sii902x_i2c_bypass_deselect()
1038 retries--; 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()
1064 dev_err(dev, "failed to release the i2c bus\n"); in sii902x_i2c_bypass_deselect()
1065 return -ETIMEDOUT; in sii902x_i2c_bypass_deselect()
1079 struct device *dev = &sii902x->i2c->dev; 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()
1100 return -EINVAL; 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()
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()
1130 ret = -ENOMEM; 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()
1160 struct device *dev = &client->dev; in sii902x_probe()
1166 ret = i2c_check_functionality(client->adapter, in sii902x_probe()
1169 dev_err(dev, "I2C adapter not suitable\n"); in sii902x_probe()
1170 return -EIO; 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()
1191 endpoint = of_graph_get_endpoint_by_regs(dev->of_node, 0, -1); in sii902x_probe()
1193 of_property_read_u32(endpoint, "bus-width", &sii902x->bus_width); in sii902x_probe()
1195 endpoint = of_graph_get_endpoint_by_regs(dev->of_node, 1, -1); in sii902x_probe()
1197 struct device_node *remote = of_graph_get_remote_port_parent(endpoint); in sii902x_probe() local
1200 if (!remote) { in sii902x_probe()
1202 return -ENODEV; in sii902x_probe()
1205 if (!of_device_is_available(remote)) { in sii902x_probe()
1206 dev_err(dev, "port@1 remote device is disabled\n"); in sii902x_probe()
1207 of_node_put(remote); in sii902x_probe()
1208 return -ENODEV; in sii902x_probe()
1211 sii902x->next_bridge = of_drm_find_bridge(remote); in sii902x_probe()
1212 of_node_put(remote); in sii902x_probe()
1213 if (!sii902x->next_bridge) in sii902x_probe()
1214 return dev_err_probe(dev, -EPROBE_DEFER, in sii902x_probe()
1215 "Failed to find remote bridge\n"); in sii902x_probe()
1218 mutex_init(&sii902x->mutex); in sii902x_probe()
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()
1248 MODULE_DEVICE_TABLE(i2c, sii902x_i2c_ids);
1261 MODULE_AUTHOR("Boris Brezillon <boris.brezillon@free-electrons.com>");
1262 MODULE_DESCRIPTION("SII902x RGB -> HDMI bridges");