Merge branch 'drm-tda998x-devel' of git://git.armlinux.org.uk/~rmk/linux-arm into drm-next (8506912b) · Commits · e / devices / android_kernel_fairphone_FP4

Documentation/devicetree/bindings/display/bridge/tda998x.txt

+18 −0

Original line number	Diff line number	Diff line
		@@ -21,8 +21,19 @@ Optional properties:
		- video-ports: 24 bits value which defines how the video controller
		output is wired to the TDA998x input - default: <0x230145>

		- audio-ports: array of 8-bit values, 2 values per one DAI[1].
		The first value defines the DAI type: TDA998x_SPDIF or TDA998x_I2S[2].
		The second value defines the tda998x AP_ENA reg content when the DAI
		in question is used. The implementation allows one or two DAIs. If two
		DAIs are defined, they must be of different type.

		[1] Documentation/sound/alsa/soc/DAI.txt
		[2] include/dt-bindings/display/tda998x.h

		Example:

		#include <dt-bindings/display/tda998x.h>

		tda998x: hdmi-encoder {
		compatible = "nxp,tda998x";
		reg = <0x70>;
		@@ -30,4 +41,11 @@ Example:
		interrupts = <27 2>; /* falling edge */
		pinctrl-0 = <&pmx_camera>;
		pinctrl-names = "default";
		video-ports = <0x230145>;

		#sound-dai-cells = <2>;
		/* DAI-format AP_ENA reg value */
		audio-ports = < TDA998x_SPDIF 0x04
		TDA998x_I2S 0x03>;

		};

arch/arm/boot/dts/am335x-boneblack.dts

+67 −4

Original line number	Diff line number	Diff line
		@@ -9,6 +9,7 @@

		#include "am33xx.dtsi"
		#include "am335x-bone-common.dtsi"
		#include <dt-bindings/display/tda998x.h>

		/ {
		model = "TI AM335x BeagleBone Black";
		@@ -75,6 +76,16 @@
		AM33XX_IOPAD(0x9b0, PIN_OUTPUT_PULLDOWN \| MUX_MODE3) /* xdma_event_intr0 */
		>;
		};

		mcasp0_pins: mcasp0_pins {
		pinctrl-single,pins = <
		AM33XX_IOPAD(0x9ac, PIN_INPUT_PULLUP \| MUX_MODE0) /* mcasp0_ahcklx.mcasp0_ahclkx */
		AM33XX_IOPAD(0x99c, PIN_OUTPUT_PULLDOWN \| MUX_MODE2) /* mcasp0_ahclkr.mcasp0_axr2*/
		AM33XX_IOPAD(0x994, PIN_OUTPUT_PULLUP \| MUX_MODE0) /* mcasp0_fsx.mcasp0_fsx */
		AM33XX_IOPAD(0x990, PIN_OUTPUT_PULLDOWN \| MUX_MODE0) /* mcasp0_aclkx.mcasp0_aclkx */
		AM33XX_IOPAD(0x86c, PIN_OUTPUT_PULLDOWN \| MUX_MODE7) /* gpmc_a11.GPIO1_27 */
		>;
		};
		};

		&lcdc {
		@@ -87,21 +98,73 @@
		};

		&i2c0 {
		tda19988 {
		tda19988: tda19988 {
		compatible = "nxp,tda998x";
		reg = <0x70>;

		pinctrl-names = "default", "off";
		pinctrl-0 = <&nxp_hdmi_bonelt_pins>;
		pinctrl-1 = <&nxp_hdmi_bonelt_off_pins>;

		port {
		#sound-dai-cells = <0>;
		audio-ports = < TDA998x_I2S 0x03>;

		ports {
		port@0 {
		hdmi_0: endpoint@0 {
		remote-endpoint = <&lcdc_0>;
		};
		};
		};
		};
		};

		&rtc {
		system-power-controller;
		};

		&mcasp0 {
		#sound-dai-cells = <0>;
		pinctrl-names = "default";
		pinctrl-0 = <&mcasp0_pins>;
		status = "okay";
		op-mode = <0>; /* MCASP_IIS_MODE */
		tdm-slots = <2>;
		serial-dir = < /* 0: INACTIVE, 1: TX, 2: RX */
		0 0 1 0
		>;
		tx-num-evt = <32>;
		rx-num-evt = <32>;
		};

		/ {
		clk_mcasp0_fixed: clk_mcasp0_fixed {
		#clock-cells = <0>;
		compatible = "fixed-clock";
		clock-frequency = <24576000>;
		};

		clk_mcasp0: clk_mcasp0 {
		#clock-cells = <0>;
		compatible = "gpio-gate-clock";
		clocks = <&clk_mcasp0_fixed>;
		enable-gpios = <&gpio1 27 0>; /* BeagleBone Black Clk enable on GPIO1_27 */
		};

		sound {
		compatible = "simple-audio-card";
		simple-audio-card,name = "TI BeagleBone Black";
		simple-audio-card,format = "i2s";
		simple-audio-card,bitclock-master = <&dailink0_master>;
		simple-audio-card,frame-master = <&dailink0_master>;

		dailink0_master: simple-audio-card,cpu {
		sound-dai = <&mcasp0>;
		clocks = <&clk_mcasp0>;
		};

		simple-audio-card,codec {
		sound-dai = <&tda19988>;
		};
		};
		};

drivers/gpu/drm/i2c/Kconfig

+1 −0

Original line number	Diff line number	Diff line
		@@ -22,6 +22,7 @@ config DRM_I2C_SIL164
		config DRM_I2C_NXP_TDA998X
		tristate "NXP Semiconductors TDA998X HDMI encoder"
		default m if DRM_TILCDC
		select SND_SOC_HDMI_CODEC if SND_SOC
		help
		Support for NXP Semiconductors TDA998X HDMI encoders.

drivers/gpu/drm/i2c/tda998x_drv.c

+256 −41

Original line number	Diff line number	Diff line
		@@ -20,6 +20,7 @@
		#include <linux/module.h>
		#include <linux/irq.h>
		#include <sound/asoundef.h>
		#include <sound/hdmi-codec.h>

		#include <drm/drmP.h>
		#include <drm/drm_atomic_helper.h>
		@@ -30,6 +31,11 @@

		#define DBG(fmt, ...) DRM_DEBUG(fmt"\n", ##__VA_ARGS__)

		struct tda998x_audio_port {
		u8 format; /* AFMT_xxx */
		u8 config; /* AP value */
		};

		struct tda998x_priv {
		struct i2c_client *cec;
		struct i2c_client *hdmi;
		@@ -41,7 +47,10 @@ struct tda998x_priv {
		u8 vip_cntrl_0;
		u8 vip_cntrl_1;
		u8 vip_cntrl_2;
		struct tda998x_encoder_params params;
		struct tda998x_audio_params audio_params;

		struct platform_device *audio_pdev;
		struct mutex audio_mutex;

		wait_queue_head_t wq_edid;
		volatile int wq_edid_wait;
		@@ -53,6 +62,8 @@ struct tda998x_priv {

		struct drm_encoder encoder;
		struct drm_connector connector;

		struct tda998x_audio_port audio_port[2];
		};

		#define conn_to_tda998x_priv(x) \
		@@ -666,26 +677,16 @@ tda998x_write_if(struct tda998x_priv *priv, u8 bit, u16 addr,
		reg_set(priv, REG_DIP_IF_FLAGS, bit);
		}

		static void
		tda998x_write_aif(struct tda998x_priv priv, struct tda998x_encoder_params p)
		static int tda998x_write_aif(struct tda998x_priv *priv,
		struct hdmi_audio_infoframe *cea)
		{
		union hdmi_infoframe frame;

		hdmi_audio_infoframe_init(&frame.audio);

		frame.audio.channels = p->audio_frame[1] & 0x07;
		frame.audio.channel_allocation = p->audio_frame[4];
		frame.audio.level_shift_value = (p->audio_frame[5] & 0x78) >> 3;
		frame.audio.downmix_inhibit = (p->audio_frame[5] & 0x80) >> 7;

		/*
		* L-PCM and IEC61937 compressed audio shall always set sample
		* frequency to "refer to stream". For others, see the HDMI
		* specification.
		*/
		frame.audio.sample_frequency = (p->audio_frame[2] & 0x1c) >> 2;
		frame.audio = *cea;

		tda998x_write_if(priv, DIP_IF_FLAGS_IF4, REG_IF4_HB0, &frame);

		return 0;
		}

		static void
		@@ -710,20 +711,21 @@ static void tda998x_audio_mute(struct tda998x_priv *priv, bool on)
		}
		}

		static void
		static int
		tda998x_configure_audio(struct tda998x_priv *priv,
		struct drm_display_mode mode, struct tda998x_encoder_params p)
		struct tda998x_audio_params *params,
		unsigned mode_clock)
		{
		u8 buf[6], clksel_aip, clksel_fs, cts_n, adiv;
		u32 n;

		/* Enable audio ports */
		reg_write(priv, REG_ENA_AP, p->audio_cfg);
		reg_write(priv, REG_ENA_ACLK, p->audio_clk_cfg);
		reg_write(priv, REG_ENA_AP, params->config);

		/* Set audio input source */
		switch (p->audio_format) {
		switch (params->format) {
		case AFMT_SPDIF:
		reg_write(priv, REG_ENA_ACLK, 0);
		reg_write(priv, REG_MUX_AP, MUX_AP_SELECT_SPDIF);
		clksel_aip = AIP_CLKSEL_AIP_SPDIF;
		clksel_fs = AIP_CLKSEL_FS_FS64SPDIF;
		@@ -731,15 +733,29 @@ tda998x_configure_audio(struct tda998x_priv *priv,
		break;

		case AFMT_I2S:
		reg_write(priv, REG_ENA_ACLK, 1);
		reg_write(priv, REG_MUX_AP, MUX_AP_SELECT_I2S);
		clksel_aip = AIP_CLKSEL_AIP_I2S;
		clksel_fs = AIP_CLKSEL_FS_ACLK;
		switch (params->sample_width) {
		case 16:
		cts_n = CTS_N_M(3) \| CTS_N_K(1);
		break;
		case 18:
		case 20:
		case 24:
		cts_n = CTS_N_M(3) \| CTS_N_K(2);
		break;
		default:
		case 32:
		cts_n = CTS_N_M(3) \| CTS_N_K(3);
		break;
		}
		break;

		default:
		BUG();
		return;
		dev_err(&priv->hdmi->dev, "Unsupported I2S format\n");
		return -EINVAL;
		}

		reg_write(priv, REG_AIP_CLKSEL, clksel_aip);
		@@ -755,11 +771,11 @@ tda998x_configure_audio(struct tda998x_priv *priv,
		* assume 100MHz requires larger divider.
		*/
		adiv = AUDIO_DIV_SERCLK_8;
		if (mode->clock > 100000)
		if (mode_clock > 100000)
		adiv++; /* AUDIO_DIV_SERCLK_16 */

		/* S/PDIF asks for a larger divider */
		if (p->audio_format == AFMT_SPDIF)
		if (params->format == AFMT_SPDIF)
		adiv++; /* AUDIO_DIV_SERCLK_16 or _32 */

		reg_write(priv, REG_AUDIO_DIV, adiv);
		@@ -768,7 +784,7 @@ tda998x_configure_audio(struct tda998x_priv *priv,
		* This is the approximate value of N, which happens to be
		* the recommended values for non-coherent clocks.
		*/
		n = 128 * p->audio_sample_rate / 1000;
		n = 128 * params->sample_rate / 1000;

		/* Write the CTS and N values */
		buf[0] = 0x44;
		@@ -786,20 +802,21 @@ tda998x_configure_audio(struct tda998x_priv *priv,
		reg_set(priv, REG_AIP_CNTRL_0, AIP_CNTRL_0_RST_CTS);
		reg_clear(priv, REG_AIP_CNTRL_0, AIP_CNTRL_0_RST_CTS);

		/* Write the channel status */
		buf[0] = IEC958_AES0_CON_NOT_COPYRIGHT;
		buf[1] = 0x00;
		buf[2] = IEC958_AES3_CON_FS_NOTID;
		buf[3] = IEC958_AES4_CON_ORIGFS_NOTID \|
		IEC958_AES4_CON_MAX_WORDLEN_24;
		/* Write the channel status
		* The REG_CH_STAT_B-registers skip IEC958 AES2 byte, because
		* there is a separate register for each I2S wire.
		*/
		buf[0] = params->status[0];
		buf[1] = params->status[1];
		buf[2] = params->status[3];
		buf[3] = params->status[4];
		reg_write_range(priv, REG_CH_STAT_B(0), buf, 4);

		tda998x_audio_mute(priv, true);
		msleep(20);
		tda998x_audio_mute(priv, false);

		/* Write the audio information packet */
		tda998x_write_aif(priv, p);
		return tda998x_write_aif(priv, &params->cea);
		}

		/* DRM encoder functions */
		@@ -820,7 +837,7 @@ static void tda998x_encoder_set_config(struct tda998x_priv *priv,
		VIP_CNTRL_2_SWAP_F(p->swap_f) \|
		(p->mirr_f ? VIP_CNTRL_2_MIRR_F : 0);

		priv->params = *p;
		priv->audio_params = p->audio_params;
		}

		static void tda998x_encoder_dpms(struct drm_encoder *encoder, int mode)
		@@ -1057,9 +1074,13 @@ tda998x_encoder_mode_set(struct drm_encoder *encoder,

		tda998x_write_avi(priv, adjusted_mode);

		if (priv->params.audio_cfg)
		tda998x_configure_audio(priv, adjusted_mode,
		&priv->params);
		if (priv->audio_params.format != AFMT_UNUSED) {
		mutex_lock(&priv->audio_mutex);
		tda998x_configure_audio(priv,
		&priv->audio_params,
		adjusted_mode->clock);
		mutex_unlock(&priv->audio_mutex);
		}
		}
		}

		@@ -1159,6 +1180,8 @@ static int tda998x_connector_get_modes(struct drm_connector *connector)
		drm_mode_connector_update_edid_property(connector, edid);
		n = drm_add_edid_modes(connector, edid);
		priv->is_hdmi_sink = drm_detect_hdmi_monitor(edid);
		drm_edid_to_eld(connector, edid);

		kfree(edid);

		return n;
		@@ -1180,6 +1203,9 @@ static void tda998x_destroy(struct tda998x_priv *priv)
		cec_write(priv, REG_CEC_RXSHPDINTENA, 0);
		reg_clear(priv, REG_INT_FLAGS_2, INT_FLAGS_2_EDID_BLK_RD);

		if (priv->audio_pdev)
		platform_device_unregister(priv->audio_pdev);

		if (priv->hdmi->irq)
		free_irq(priv->hdmi->irq, priv);

		@@ -1189,8 +1215,189 @@ static void tda998x_destroy(struct tda998x_priv *priv)
		i2c_unregister_device(priv->cec);
		}

		static int tda998x_audio_hw_params(struct device dev, void data,
		struct hdmi_codec_daifmt *daifmt,
		struct hdmi_codec_params *params)
		{
		struct tda998x_priv *priv = dev_get_drvdata(dev);
		int i, ret;
		struct tda998x_audio_params audio = {
		.sample_width = params->sample_width,
		.sample_rate = params->sample_rate,
		.cea = params->cea,
		};

		if (!priv->encoder.crtc)
		return -ENODEV;

		memcpy(audio.status, params->iec.status,
		min(sizeof(audio.status), sizeof(params->iec.status)));

		switch (daifmt->fmt) {
		case HDMI_I2S:
		if (daifmt->bit_clk_inv \|\| daifmt->frame_clk_inv \|\|
		daifmt->bit_clk_master \|\| daifmt->frame_clk_master) {
		dev_err(dev, "%s: Bad flags %d %d %d %d\n", __func__,
		daifmt->bit_clk_inv, daifmt->frame_clk_inv,
		daifmt->bit_clk_master,
		daifmt->frame_clk_master);
		return -EINVAL;
		}
		for (i = 0; i < ARRAY_SIZE(priv->audio_port); i++)
		if (priv->audio_port[i].format == AFMT_I2S)
		audio.config = priv->audio_port[i].config;
		audio.format = AFMT_I2S;
		break;
		case HDMI_SPDIF:
		for (i = 0; i < ARRAY_SIZE(priv->audio_port); i++)
		if (priv->audio_port[i].format == AFMT_SPDIF)
		audio.config = priv->audio_port[i].config;
		audio.format = AFMT_SPDIF;
		break;
		default:
		dev_err(dev, "%s: Invalid format %d\n", __func__, daifmt->fmt);
		return -EINVAL;
		}

		if (audio.config == 0) {
		dev_err(dev, "%s: No audio configutation found\n", __func__);
		return -EINVAL;
		}

		mutex_lock(&priv->audio_mutex);
		ret = tda998x_configure_audio(priv,
		&audio,
		priv->encoder.crtc->hwmode.clock);

		if (ret == 0)
		priv->audio_params = audio;
		mutex_unlock(&priv->audio_mutex);

		return ret;
		}

		static void tda998x_audio_shutdown(struct device dev, void data)
		{
		struct tda998x_priv *priv = dev_get_drvdata(dev);

		mutex_lock(&priv->audio_mutex);

		reg_write(priv, REG_ENA_AP, 0);

		priv->audio_params.format = AFMT_UNUSED;

		mutex_unlock(&priv->audio_mutex);
		}

		int tda998x_audio_digital_mute(struct device dev, void data, bool enable)
		{
		struct tda998x_priv *priv = dev_get_drvdata(dev);

		mutex_lock(&priv->audio_mutex);

		tda998x_audio_mute(priv, enable);

		mutex_unlock(&priv->audio_mutex);
		return 0;
		}

		static int tda998x_audio_get_eld(struct device dev, void data,
		uint8_t *buf, size_t len)
		{
		struct tda998x_priv *priv = dev_get_drvdata(dev);
		struct drm_mode_config *config = &priv->encoder.dev->mode_config;
		struct drm_connector *connector;
		int ret = -ENODEV;

		mutex_lock(&config->mutex);
		list_for_each_entry(connector, &config->connector_list, head) {
		if (&priv->encoder == connector->encoder) {
		memcpy(buf, connector->eld,
		min(sizeof(connector->eld), len));
		ret = 0;
		}
		}
		mutex_unlock(&config->mutex);

		return ret;
		}

		static const struct hdmi_codec_ops audio_codec_ops = {
		.hw_params = tda998x_audio_hw_params,
		.audio_shutdown = tda998x_audio_shutdown,
		.digital_mute = tda998x_audio_digital_mute,
		.get_eld = tda998x_audio_get_eld,
		};

		static int tda998x_audio_codec_init(struct tda998x_priv *priv,
		struct device *dev)
		{
		struct hdmi_codec_pdata codec_data = {
		.ops = &audio_codec_ops,
		.max_i2s_channels = 2,
		};
		int i;

		for (i = 0; i < ARRAY_SIZE(priv->audio_port); i++) {
		if (priv->audio_port[i].format == AFMT_I2S &&
		priv->audio_port[i].config != 0)
		codec_data.i2s = 1;
		if (priv->audio_port[i].format == AFMT_SPDIF &&
		priv->audio_port[i].config != 0)
		codec_data.spdif = 1;
		}

		priv->audio_pdev = platform_device_register_data(
		dev, HDMI_CODEC_DRV_NAME, PLATFORM_DEVID_AUTO,
		&codec_data, sizeof(codec_data));

		return PTR_ERR_OR_ZERO(priv->audio_pdev);
		}

		/* I2C driver functions */

		static int tda998x_get_audio_ports(struct tda998x_priv *priv,
		struct device_node *np)
		{
		const u32 *port_data;
		u32 size;
		int i;

		port_data = of_get_property(np, "audio-ports", &size);
		if (!port_data)
		return 0;

		size /= sizeof(u32);
		if (size > 2 * ARRAY_SIZE(priv->audio_port) \|\| size % 2 != 0) {
		dev_err(&priv->hdmi->dev,
		"Bad number of elements in audio-ports dt-property\n");
		return -EINVAL;
		}

		size /= 2;

		for (i = 0; i < size; i++) {
		u8 afmt = be32_to_cpup(&port_data[2*i]);
		u8 ena_ap = be32_to_cpup(&port_data[2*i+1]);

		if (afmt != AFMT_SPDIF && afmt != AFMT_I2S) {
		dev_err(&priv->hdmi->dev,
		"Bad audio format %u\n", afmt);
		return -EINVAL;
		}

		priv->audio_port[i].format = afmt;
		priv->audio_port[i].config = ena_ap;
		}

		if (priv->audio_port[0].format == priv->audio_port[1].format) {
		dev_err(&priv->hdmi->dev,
		"There can only be on I2S port and one SPDIF port\n");
		return -EINVAL;
		}
		return 0;
		}

		static int tda998x_create(struct i2c_client client, struct tda998x_priv priv)
		{
		struct device_node *np = client->dev.of_node;
		@@ -1304,7 +1511,7 @@ static int tda998x_create(struct i2c_client client, struct tda998x_priv priv)
		if (!np)
		return 0; /* non-DT */

		/* get the optional video properties */
		/* get the device tree parameters */
		ret = of_property_read_u32(np, "video-ports", &video);
		if (ret == 0) {
		priv->vip_cntrl_0 = video >> 16;
		@@ -1312,8 +1519,16 @@ static int tda998x_create(struct i2c_client client, struct tda998x_priv priv)
		priv->vip_cntrl_2 = video;
		}

		return 0;
		mutex_init(&priv->audio_mutex); /* Protect access from audio thread */

		ret = tda998x_get_audio_ports(priv, np);
		if (ret)
		goto fail;

		if (priv->audio_port[0].format != AFMT_UNUSED)
		tda998x_audio_codec_init(priv, &client->dev);

		return 0;
		fail:
		/* if encoder_init fails, the encoder slave is never registered,
		* so cleanup here:

include/drm/i2c/tda998x.h

+19 −10

Original line number	Diff line number	Diff line
		#ifndef __DRM_I2C_TDA998X_H__
		#define __DRM_I2C_TDA998X_H__

		#include <linux/hdmi.h>
		#include <dt-bindings/display/tda998x.h>

		enum {
		AFMT_UNUSED = 0,
		AFMT_SPDIF = TDA998x_SPDIF,
		AFMT_I2S = TDA998x_I2S,
		};

		struct tda998x_audio_params {
		u8 config;
		u8 format;
		unsigned sample_width;
		unsigned sample_rate;
		struct hdmi_audio_infoframe cea;
		u8 status[5];
		};

		struct tda998x_encoder_params {
		u8 swap_b:3;
		u8 mirr_b:1;
		@@ -15,16 +33,7 @@ struct tda998x_encoder_params {
		u8 swap_e:3;
		u8 mirr_e:1;

		u8 audio_cfg;
		u8 audio_clk_cfg;
		u8 audio_frame[6];

		enum {
		AFMT_SPDIF,
		AFMT_I2S
		} audio_format;

		unsigned audio_sample_rate;
		struct tda998x_audio_params audio_params;
		};

		#endif