[alsa-devel] [PATCH v2 2/2] ASoC: qcom: add sdm845 sound card support

This patch adds sdm845 audio machine driver support.

Signed-off-by: Rohit kumar rohitkr@codeaurora.org --- sound/soc/qcom/Kconfig | 9 + sound/soc/qcom/Makefile | 2 + sound/soc/qcom/sdm845.c | 514 ++++++++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 525 insertions(+) create mode 100644 sound/soc/qcom/sdm845.c

diff --git a/sound/soc/qcom/Kconfig b/sound/soc/qcom/Kconfig index 87838fa..09de50d 100644 --- a/sound/soc/qcom/Kconfig +++ b/sound/soc/qcom/Kconfig @@ -90,3 +90,12 @@ config SND_SOC_MSM8996 Support for Qualcomm Technologies LPASS audio block in APQ8096 SoC-based systems. Say Y if you want to use audio device on this SoCs + +config SND_SOC_SDM845 + tristate "SoC Machine driver for SDM845 boards" + depends on QCOM_APR + select SND_SOC_QDSP6 + help + To add support for audio on Qualcomm Technologies Inc. + SDM845 SoC-based systems. + Say Y if you want to use audio device on this SoCs diff --git a/sound/soc/qcom/Makefile b/sound/soc/qcom/Makefile index 206945b..07f097a 100644 --- a/sound/soc/qcom/Makefile +++ b/sound/soc/qcom/Makefile @@ -14,10 +14,12 @@ obj-$(CONFIG_SND_SOC_LPASS_APQ8016) += snd-soc-lpass-apq8016.o snd-soc-storm-objs := storm.o snd-soc-apq8016-sbc-objs := apq8016_sbc.o snd-soc-apq8096-objs := apq8096.o +snd-soc-sdm845-objs := sdm845.o

obj-$(CONFIG_SND_SOC_STORM) += snd-soc-storm.o obj-$(CONFIG_SND_SOC_APQ8016_SBC) += snd-soc-apq8016-sbc.o obj-$(CONFIG_SND_SOC_MSM8996) += snd-soc-apq8096.o +obj-$(CONFIG_SND_SOC_SDM845) += snd-soc-sdm845.o

#DSP lib obj-$(CONFIG_SND_SOC_QDSP6) += qdsp6/ diff --git a/sound/soc/qcom/sdm845.c b/sound/soc/qcom/sdm845.c new file mode 100644 index 0000000..531af82 --- /dev/null +++ b/sound/soc/qcom/sdm845.c @@ -0,0 +1,514 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (c) 2018, The Linux Foundation. All rights reserved. + */ + +#include <linux/module.h> +#include <linux/component.h> +#include <linux/platform_device.h> +#include <linux/regulator/consumer.h> +#include <linux/atomic.h> +#include <linux/of_device.h> +#include <sound/pcm.h> +#include <sound/pcm_params.h> +#include <sound/soc.h> +#include <linux/soc/qcom/apr.h> +#include "qdsp6/q6afe.h" + +#define DEFAULT_SAMPLE_RATE_48K 48000 +#define DEFAULT_MCLK_RATE 24576000 +#define DEFAULT_BCLK_RATE 1536000 + +struct sdm845_snd_data { + struct snd_soc_card *card; + struct regulator *vdd_supply; + uint32_t pri_mi2s_clk_count; + uint32_t quat_tdm_clk_count; + struct snd_soc_dai_link dai_link[]; +}; + + +static unsigned int tdm_slot_offset[8] = {0, 4, 8, 12, 16, 20, 24, 28}; + +static int sdm845_tdm_snd_hw_params(struct snd_pcm_substream *substream, + struct snd_pcm_hw_params *params) +{ + struct snd_soc_pcm_runtime *rtd = substream->private_data; + struct snd_soc_dai *cpu_dai = rtd->cpu_dai; + int ret = 0; + int channels, slot_width; + + switch (params_format(params)) { + case SNDRV_PCM_FORMAT_S32_LE: + case SNDRV_PCM_FORMAT_S24_LE: + case SNDRV_PCM_FORMAT_S16_LE: + slot_width = 32; + break; + default: + dev_err(rtd->dev, "%s: invalid param format 0x%x\n", + __func__, params_format(params)); + return -EINVAL; + } + + channels = params_channels(params); + if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { + ret = snd_soc_dai_set_tdm_slot(cpu_dai, 0, 0x3, + channels, slot_width); + if (ret < 0) { + dev_err(rtd->dev, "%s: failed to set tdm slot, err:%d\n", + __func__, ret); + goto end; + } + + ret = snd_soc_dai_set_channel_map(cpu_dai, 0, NULL, + channels, tdm_slot_offset); + if (ret < 0) { + dev_err(rtd->dev, "%s: failed to set channel map, err:%d\n", + __func__, ret); + goto end; + } + } else { + ret = snd_soc_dai_set_tdm_slot(cpu_dai, 0xf, 0, + channels, slot_width); + if (ret < 0) { + dev_err(rtd->dev, "%s: failed to set tdm slot, err:%d\n", + __func__, ret); + goto end; + } + + ret = snd_soc_dai_set_channel_map(cpu_dai, channels, + tdm_slot_offset, 0, NULL); + if (ret < 0) { + dev_err(rtd->dev, "%s: failed to set channel map, err:%d\n", + __func__, ret); + goto end; + } + } +end: + return ret; +} + +static int sdm845_snd_hw_params(struct snd_pcm_substream *substream, + struct snd_pcm_hw_params *params) +{ + struct snd_soc_pcm_runtime *rtd = substream->private_data; + struct snd_soc_dai *cpu_dai = rtd->cpu_dai; + int ret = 0; + + switch (cpu_dai->id) { + case QUATERNARY_TDM_RX_0: + case QUATERNARY_TDM_TX_0: + ret = sdm845_tdm_snd_hw_params(substream, params); + break; + default: + pr_err("%s: invalid dai id 0x%x\n", __func__, cpu_dai->id); + break; + } + return ret; +} + +static int sdm845_snd_startup(struct snd_pcm_substream *substream) +{ + unsigned int fmt = SND_SOC_DAIFMT_CBS_CFS; + struct snd_soc_pcm_runtime *rtd = substream->private_data; + struct snd_soc_card *card = rtd->card; + struct sdm845_snd_data *data = snd_soc_card_get_drvdata(card); + struct snd_soc_dai *cpu_dai = rtd->cpu_dai; + + switch (cpu_dai->id) { + case PRIMARY_MI2S_RX: + case PRIMARY_MI2S_TX: + if (++(data->pri_mi2s_clk_count) == 1) { + snd_soc_dai_set_sysclk(cpu_dai, + Q6AFE_LPASS_CLK_ID_MCLK_1, + DEFAULT_MCLK_RATE, SNDRV_PCM_STREAM_PLAYBACK); + snd_soc_dai_set_sysclk(cpu_dai, + Q6AFE_LPASS_CLK_ID_PRI_MI2S_IBIT, + DEFAULT_BCLK_RATE, SNDRV_PCM_STREAM_PLAYBACK); + } + snd_soc_dai_set_fmt(cpu_dai, fmt); + break; + + case QUATERNARY_TDM_RX_0: + case QUATERNARY_TDM_TX_0: + if (++(data->quat_tdm_clk_count) == 1) { + snd_soc_dai_set_sysclk(cpu_dai, + Q6AFE_LPASS_CLK_ID_QUAD_TDM_IBIT, + DEFAULT_BCLK_RATE, SNDRV_PCM_STREAM_PLAYBACK); + } + break; + + default: + pr_err("%s: invalid dai id 0x%x\n", __func__, cpu_dai->id); + break; + } + return 0; +} + +static void sdm845_snd_shutdown(struct snd_pcm_substream *substream) +{ + struct snd_soc_pcm_runtime *rtd = substream->private_data; + struct snd_soc_card *card = rtd->card; + struct sdm845_snd_data *data = snd_soc_card_get_drvdata(card); + struct snd_soc_dai *cpu_dai = rtd->cpu_dai; + + switch (cpu_dai->id) { + case PRIMARY_MI2S_RX: + case PRIMARY_MI2S_TX: + if (--(data->pri_mi2s_clk_count) == 0) { + snd_soc_dai_set_sysclk(cpu_dai, + Q6AFE_LPASS_CLK_ID_MCLK_1, + 0, SNDRV_PCM_STREAM_PLAYBACK); + snd_soc_dai_set_sysclk(cpu_dai, + Q6AFE_LPASS_CLK_ID_PRI_MI2S_IBIT, + 0, SNDRV_PCM_STREAM_PLAYBACK); + }; + break; + + case QUATERNARY_TDM_RX_0: + case QUATERNARY_TDM_TX_0: + if (--(data->quat_tdm_clk_count) == 0) { + snd_soc_dai_set_sysclk(cpu_dai, + Q6AFE_LPASS_CLK_ID_QUAD_TDM_IBIT, + 0, SNDRV_PCM_STREAM_PLAYBACK); + } + break; + + default: + pr_err("%s: invalid dai id 0x%x\n", __func__, cpu_dai->id); + break; + } +} + +static struct snd_soc_ops sdm845_be_ops = { + .hw_params = sdm845_snd_hw_params, + .startup = sdm845_snd_startup, + .shutdown = sdm845_snd_shutdown, +}; + +static int sdm845_be_hw_params_fixup(struct snd_soc_pcm_runtime *rtd, + struct snd_pcm_hw_params *params) +{ + struct snd_interval *rate = hw_param_interval(params, + SNDRV_PCM_HW_PARAM_RATE); + struct snd_interval *channels = hw_param_interval(params, + SNDRV_PCM_HW_PARAM_CHANNELS); + + rate->min = rate->max = DEFAULT_SAMPLE_RATE_48K; + channels->min = channels->max = 2; + + return 0; +} + +static struct sdm845_snd_data *sdm845_sbc_parse_of(struct snd_soc_card *card) +{ + struct device *dev = card->dev; + struct snd_soc_dai_link *link; + struct device_node *np, *codec, *platform, *cpu, *node; + int ret, num_links; + struct sdm845_snd_data *data; + + ret = snd_soc_of_parse_card_name(card, "qcom,model"); + if (ret) { + dev_err(dev, "Error parsing card name: %d\n", ret); + return ERR_PTR(ret); + } + + node = dev->of_node; + + /* DAPM routes */ + if (of_property_read_bool(node, "qcom,audio-routing")) { + ret = snd_soc_of_parse_audio_routing(card, + "qcom,audio-routing"); + if (ret) + return ERR_PTR(ret); + } + + /* Populate links */ + num_links = of_get_child_count(node); + + /* Allocate the private data and the DAI link array */ + data = kzalloc(sizeof(*data) + sizeof(*link) * num_links, + GFP_KERNEL); + if (!data) + return ERR_PTR(-ENOMEM); + + card->dai_link = &data->dai_link[0]; + card->num_links = num_links; + + link = data->dai_link; + data->card = card; + + for_each_child_of_node(node, np) { + cpu = of_get_child_by_name(np, "cpu"); + if (!cpu) { + dev_err(dev, "Can't find cpu DT node\n"); + ret = -EINVAL; + goto fail; + } + + link->cpu_of_node = of_parse_phandle(cpu, "sound-dai", 0); + if (!link->cpu_of_node) { + dev_err(card->dev, "error getting cpu phandle\n"); + ret = -EINVAL; + goto fail; + } + + ret = snd_soc_of_get_dai_name(cpu, &link->cpu_dai_name); + if (ret) { + dev_err(card->dev, "error getting cpu dai name\n"); + goto fail; + } + + platform = of_get_child_by_name(np, "platform"); + codec = of_get_child_by_name(np, "codec"); + if (codec && platform) { + link->platform_of_node = of_parse_phandle(platform, + "sound-dai", 0); + if (!link->platform_of_node) { + dev_err(card->dev, "error getting platform phandle\n"); + ret = -EINVAL; + goto fail; + } + + ret = snd_soc_of_get_dai_link_codecs(dev, codec, link); + if (ret < 0) { + dev_err(card->dev, "error getting codec dai name\n"); + goto fail; + } + link->no_pcm = 1; + link->ignore_pmdown_time = 1; + link->ops = &sdm845_be_ops; + link->be_hw_params_fixup = sdm845_be_hw_params_fixup; + } else { + link->platform_of_node = link->cpu_of_node; + link->codec_dai_name = "snd-soc-dummy-dai"; + link->codec_name = "snd-soc-dummy"; + link->dynamic = 1; + } + + link->ignore_suspend = 1; + ret = of_property_read_string(np, "link-name", &link->name); + if (ret) { + dev_err(card->dev, + "error getting codec dai_link name\n"); + goto fail; + } + + link->dpcm_playback = 1; + link->dpcm_capture = 1; + link->stream_name = link->name; + link++; + } + dev_set_drvdata(dev, card); + snd_soc_card_set_drvdata(card, data); + + return data; +fail: + kfree(data); + return ERR_PTR(ret); +} + +static void sdm845_init_supplies(struct device *dev) +{ + struct snd_soc_card *card = dev_get_drvdata(dev); + struct sdm845_snd_data *data = snd_soc_card_get_drvdata(card); + + data->vdd_supply = regulator_get(dev, "cdc-vdd"); + if (IS_ERR(data->vdd_supply)) { + dev_err(dev, "Unable to get regulator supplies\n"); + data->vdd_supply = NULL; + return; + } + + if (regulator_enable(data->vdd_supply)) + dev_err(dev, "Unable to enable vdd supply\n"); +} + +static void sdm845_deinit_supplies(struct device *dev) +{ + struct snd_soc_card *card = dev_get_drvdata(dev); + struct sdm845_snd_data *data = snd_soc_card_get_drvdata(card); + + if (!data->vdd_supply) + return; + + regulator_disable(data->vdd_supply); + regulator_put(data->vdd_supply); +} + +static int sdm845_bind(struct device *dev) +{ + struct snd_soc_card *card; + struct sdm845_snd_data *data; + int ret; + + card = kzalloc(sizeof(*card), GFP_KERNEL); + if (!card) + return -ENOMEM; + + ret = component_bind_all(dev, card); + if (ret) { + dev_err(dev, "Audio components bind failed: %d\n", ret); + goto bind_fail; + } + + card->dev = dev; + data = sdm845_sbc_parse_of(card); + if (IS_ERR_OR_NULL(data)) { + dev_err(dev, "Error parsing OF data\n"); + goto parse_dt_fail; + } + sdm845_init_supplies(dev); + + ret = snd_soc_register_card(card); + if (ret) { + dev_err(dev, "Sound card registration failed\n"); + goto register_card_fail; + } + return ret; + +register_card_fail: + sdm845_deinit_supplies(dev); + kfree(data); +parse_dt_fail: + component_unbind_all(dev, card); +bind_fail: + kfree(card); + return ret; +} + +static void sdm845_unbind(struct device *dev) +{ + struct snd_soc_card *card = dev_get_drvdata(dev); + struct sdm845_snd_data *data = snd_soc_card_get_drvdata(card); + + if (data->vdd_supply) + regulator_put(data->vdd_supply); + component_unbind_all(dev, card); + snd_soc_unregister_card(card); + kfree(data); + kfree(card); +} + +static const struct component_master_ops sdm845_ops = { + .bind = sdm845_bind, + .unbind = sdm845_unbind, +}; + +static int sdm845_runtime_resume(struct device *dev) +{ + struct snd_soc_card *card = dev_get_drvdata(dev); + struct sdm845_snd_data *data = snd_soc_card_get_drvdata(card); + + if (!data->vdd_supply) { + dev_dbg(dev, "no supplies defined\n"); + return 0; + } + + if (regulator_enable(data->vdd_supply)) + dev_err(dev, "Enable regulator supply failed\n"); + + return 0; +} + +static int sdm845_runtime_suspend(struct device *dev) +{ + struct snd_soc_card *card = dev_get_drvdata(dev); + struct sdm845_snd_data *data = snd_soc_card_get_drvdata(card); + + if (!data->vdd_supply) { + dev_dbg(dev, "no supplies defined\n"); + return 0; + } + + if (regulator_disable(data->vdd_supply)) + dev_err(dev, "Disable regulator supply failed\n"); + + return 0; +} + +static const struct dev_pm_ops sdm845_pm_ops = { + SET_RUNTIME_PM_OPS(sdm845_runtime_suspend, + sdm845_runtime_resume, NULL) +}; + +static int sdm845_compare_of(struct device *dev, void *data) +{ + return dev->of_node == data; +} + +static void sdm845_release_of(struct device *dev, void *data) +{ + of_node_put(data); +} + +static int add_audio_components(struct device *dev, + struct component_match **matchptr) +{ + struct device_node *np, *platform, *cpu, *node, *dai_node; + + node = dev->of_node; + + for_each_child_of_node(node, np) { + cpu = of_get_child_by_name(np, "cpu"); + if (cpu) { + dai_node = of_parse_phandle(cpu, "sound-dai", 0); + of_node_get(dai_node); + component_match_add_release(dev, matchptr, + sdm845_release_of, + sdm845_compare_of, + dai_node); + } + + platform = of_get_child_by_name(np, "platform"); + if (platform) { + dai_node = of_parse_phandle(platform, "sound-dai", 0); + component_match_add_release(dev, matchptr, + sdm845_release_of, + sdm845_compare_of, + dai_node); + } + } + + return 0; +} + +static int sdm845_snd_platform_probe(struct platform_device *pdev) +{ + struct component_match *match = NULL; + int ret; + + ret = add_audio_components(&pdev->dev, &match); + if (ret) + return ret; + + return component_master_add_with_match(&pdev->dev, &sdm845_ops, match); +} + +static int sdm845_snd_platform_remove(struct platform_device *pdev) +{ + component_master_del(&pdev->dev, &sdm845_ops); + return 0; +} + +static const struct of_device_id sdm845_snd_device_id[] = { + { .compatible = "qcom,sdm845-sndcard" }, + {}, +}; +MODULE_DEVICE_TABLE(of, sdm845_snd_device_id); + +static struct platform_driver sdm845_snd_driver = { + .probe = sdm845_snd_platform_probe, + .remove = sdm845_snd_platform_remove, + .driver = { + .name = "msm-snd-sdm845", + .pm = &sdm845_pm_ops, + .owner = THIS_MODULE, + .of_match_table = sdm845_snd_device_id, + }, +}; +module_platform_driver(sdm845_snd_driver); + +MODULE_DESCRIPTION("sdm845 ASoC Machine Driver"); +MODULE_LICENSE("GPL v2");