[alsa-devel] [PATCH v2 11/15] ASoC: qcom: qdsp6: Add support to q6afe dai driver

From: Srinivas Kandagatla srinivas.kandagatla@linaro.org

This patch adds support to q6afe backend dais driver.

Signed-off-by: Srinivas Kandagatla srinivas.kandagatla@linaro.org --- sound/soc/qcom/Kconfig | 5 + sound/soc/qcom/qdsp6/Makefile | 1 + sound/soc/qcom/qdsp6/q6afe-dai.c | 241 +++++++++++++++++++++++++++++++++++++++ 3 files changed, 247 insertions(+) create mode 100644 sound/soc/qcom/qdsp6/q6afe-dai.c

diff --git a/sound/soc/qcom/Kconfig b/sound/soc/qcom/Kconfig index dd8fb0cde614..003ce182691c 100644 --- a/sound/soc/qcom/Kconfig +++ b/sound/soc/qcom/Kconfig @@ -64,6 +64,10 @@ config SND_SOC_QDSP6_ROUTING tristate default n

+config SND_SOC_QDSP6_AFE_DAI + tristate + default n + config SND_SOC_QDSP6 tristate "SoC ALSA audio driver for QDSP6" select SND_SOC_QDSP6_AFE @@ -71,6 +75,7 @@ config SND_SOC_QDSP6 select SND_SOC_QDSP6_ASM select SND_SOC_QDSP6_CORE select SND_SOC_QDSP6_ROUTING + select SND_SOC_QDSP6_AFE_DAI help To add support for MSM QDSP6 Soc Audio. This will enable sound soc platform specific diff --git a/sound/soc/qcom/qdsp6/Makefile b/sound/soc/qcom/qdsp6/Makefile index c1ad060a2341..bd8bd02bf09e 100644 --- a/sound/soc/qcom/qdsp6/Makefile +++ b/sound/soc/qcom/qdsp6/Makefile @@ -3,3 +3,4 @@ obj-$(CONFIG_SND_SOC_QDSP6_ADM) += q6adm.o obj-$(CONFIG_SND_SOC_QDSP6_ASM) += q6asm.o obj-$(CONFIG_SND_SOC_QDSP6_CORE) += q6core.o obj-$(CONFIG_SND_SOC_QDSP6_ROUTING) += q6routing.o +obj-$(CONFIG_SND_SOC_QDSP6_AFE_DAI) += q6afe-dai.o diff --git a/sound/soc/qcom/qdsp6/q6afe-dai.c b/sound/soc/qcom/qdsp6/q6afe-dai.c new file mode 100644 index 000000000000..e9865c684bcb --- /dev/null +++ b/sound/soc/qcom/qdsp6/q6afe-dai.c @@ -0,0 +1,241 @@ +/* SPDX-License-Identifier: GPL-2.0 +* Copyright (c) 2011-2016, The Linux Foundation +* Copyright (c) 2017, Linaro Limited +*/ +#include <linux/err.h> +#include <linux/init.h> +#include <linux/module.h> +#include <linux/device.h> +#include <linux/platform_device.h> +#include <linux/slab.h> +#include <sound/pcm.h> +#include <sound/soc.h> +#include <sound/pcm_params.h> +#include "q6afe.h" + +struct q6hdmi_dai_data { + struct q6afe_port *port; + struct q6afe_hdmi_cfg port_config; + bool is_port_started; +}; + +static int q6hdmi_format_put(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + struct q6hdmi_dai_data *dai_data = kcontrol->private_data; + int value = ucontrol->value.integer.value[0]; + + dai_data->port_config.datatype = value; + + return 0; +} + +static int q6hdmi_format_get(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + + struct q6hdmi_dai_data *dai_data = kcontrol->private_data; + + ucontrol->value.integer.value[0] = + dai_data->port_config.datatype; + + return 0; +} + +static const char * const hdmi_format[] = { + "LPCM", + "Compr" +}; + +static const struct soc_enum hdmi_config_enum[] = { + SOC_ENUM_SINGLE_EXT(2, hdmi_format), +}; + +static const struct snd_kcontrol_new hdmi_config_controls[] = { + SOC_ENUM_EXT("HDMI RX Format", hdmi_config_enum[0], + q6hdmi_format_get, + q6hdmi_format_put), +}; + +static int q6hdmi_hw_params(struct snd_pcm_substream *substream, + struct snd_pcm_hw_params *params, + struct snd_soc_dai *dai) +{ + struct q6hdmi_dai_data *dai_data = dev_get_drvdata(dai->dev); + int channels = params_channels(params); + + dai_data->port_config.sample_rate = params_rate(params); + switch (params_format(params)) { + case SNDRV_PCM_FORMAT_S16_LE: + dai_data->port_config.bit_width = 16; + break; + case SNDRV_PCM_FORMAT_S24_LE: + dai_data->port_config.bit_width = 24; + break; + } + + /*refer to HDMI spec CEA-861-E: Table 28 Audio InfoFrame Data Byte 4*/ + switch (channels) { + case 2: + dai_data->port_config.channel_allocation = 0; + break; + case 3: + dai_data->port_config.channel_allocation = 0x02; + break; + case 4: + dai_data->port_config.channel_allocation = 0x06; + break; + case 5: + dai_data->port_config.channel_allocation = 0x0A; + break; + case 6: + dai_data->port_config.channel_allocation = 0x0B; + break; + case 7: + dai_data->port_config.channel_allocation = 0x12; + break; + case 8: + dai_data->port_config.channel_allocation = 0x13; + break; + default: + dev_err(dai->dev, "invalid Channels = %u\n", channels); + return -EINVAL; + } + + return 0; +} + +static int q6hdmi_startup(struct snd_pcm_substream *substream, + struct snd_soc_dai *dai) +{ + struct q6hdmi_dai_data *dai_data = dev_get_drvdata(dai->dev); + + dai_data->is_port_started = false; + + return 0; +} + +static void q6hdmi_shutdown(struct snd_pcm_substream *substream, + struct snd_soc_dai *dai) +{ + struct q6hdmi_dai_data *dai_data = dev_get_drvdata(dai->dev); + int rc; + + rc = q6afe_port_stop(dai_data->port); + if (rc < 0) + dev_err(dai->dev, "fail to close AFE port\n"); + + dai_data->is_port_started = false; + +} + +static int q6hdmi_prepare(struct snd_pcm_substream *substream, + struct snd_soc_dai *dai) +{ + struct q6hdmi_dai_data *dai_data = dev_get_drvdata(dai->dev); + int rc; + + if (dai_data->is_port_started) { + /* stop the port and restart with new port config */ + rc = q6afe_port_stop(dai_data->port); + if (rc < 0) { + dev_err(dai->dev, "fail to close AFE port\n"); + return rc; + } + } + + q6afe_hdmi_port_prepare(dai_data->port, &dai_data->port_config); + rc = q6afe_port_start(dai_data->port); + if (rc < 0) { + dev_err(dai->dev, "fail to start AFE port %x\n", dai->id); + return rc; + } + dai_data->is_port_started = true; + + return 0; +} + +static const struct snd_soc_dapm_route hdmi_dapm_routes[] = { + {"HDMI Playback", NULL, "HDMI"}, +}; + +static struct snd_soc_dai_ops q6hdmi_ops = { + .prepare = q6hdmi_prepare, + .hw_params = q6hdmi_hw_params, + .shutdown = q6hdmi_shutdown, + .startup = q6hdmi_startup, +}; + +static struct snd_soc_dai_driver q6afe_dai_hdmi_rx = { + .playback = { + .stream_name = "HDMI Playback", + .rates = SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_96000 | + SNDRV_PCM_RATE_192000, + .formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S24_LE, + .channels_min = 2, + .channels_max = 8, + .rate_max = 192000, + .rate_min = 48000, + }, + .ops = &q6hdmi_ops, + .id = AFE_PORT_HDMI_RX, + .name = "HDMI", +}; + +static const struct snd_soc_dapm_widget hdmi_dapm_widgets[] = { + SND_SOC_DAPM_AIF_OUT("HDMI", "HDMI Playback", 0, 0, 0, 0), + SND_SOC_DAPM_OUTPUT("HDMI-RX"), +}; + +static const struct snd_soc_component_driver msm_dai_hdmi_q6_component = { + .name = "msm-dai-q6-hdmi", + .dapm_widgets = hdmi_dapm_widgets, + .num_dapm_widgets = ARRAY_SIZE(hdmi_dapm_widgets), + .controls = hdmi_config_controls, + .num_controls = ARRAY_SIZE(hdmi_config_controls), + .dapm_routes = hdmi_dapm_routes, + .num_dapm_routes = ARRAY_SIZE(hdmi_dapm_routes), +}; + +static int q6afe_dai_dev_probe(struct platform_device *pdev) +{ + struct q6hdmi_dai_data *dai_data; + int rc = 0; + struct q6afe_port *port; + + dai_data = devm_kzalloc(&pdev->dev, sizeof(*dai_data), GFP_KERNEL); + if (!dai_data) + rc = -ENOMEM; + + port = q6afe_port_get_from_id(&pdev->dev, AFE_PORT_HDMI_RX); + if (IS_ERR(port)) { + dev_err(&pdev->dev, "Unable to get afe port\n"); + return -EPROBE_DEFER; + } + dai_data->port = port; + dev_set_drvdata(&pdev->dev, dai_data); + + return devm_snd_soc_register_component(&pdev->dev, + &msm_dai_hdmi_q6_component, + &q6afe_dai_hdmi_rx, 1); +} + +static int q6afe_dai_dev_remove(struct platform_device *pdev) +{ + struct q6hdmi_dai_data *dai_data = dev_get_drvdata(&pdev->dev); + + q6afe_port_put(dai_data->port); + + return 0; +} + +static struct platform_driver q6afe_dai_driver = { + .probe = q6afe_dai_dev_probe, + .remove = q6afe_dai_dev_remove, + .driver = { + .name = "q6afe_dai", + .owner = THIS_MODULE, + }, +}; + +module_platform_driver(q6afe_dai_driver);