From: Ajit Pandey <aj...@codeaurora.org> Add new driver to register sound card on sc7180 trogdor board and do the required configuration for lpass cpu dai and external codecs connected over MI2S interfaces.
Signed-off-by: Ajit Pandey <aj...@codeaurora.org> Signed-off-by: Cheng-Yi Chiang <cychi...@chromium.org> --- Note: - This patch depends on this patch series so it is not ready to be merged now. ASoC: qcom: Add support for SC7180 lpass variant https://patchwork.kernel.org/cover/11650649/ - The patch is made by the collaboration of Cheng-Yi Chiang <cychi...@chromium.org> Rohit kumar <rohi...@codeaurora.org> Ajit Pandey <aj...@codeaurora.org> But Ajit has left codeaurora. - We may reduce the duplicate code of sc7180_parse_of and qcom_snd_parse_of in snd/soc/qcom/common.c. However, qcom_snd_parse_of has specific logic with qdsp. In this initial version, to keep it simple, I choose to only implement needed device property parsing by sc7180 sound card in sc7180_parse_of. Thanks for the review! sound/soc/qcom/Kconfig | 11 ++ sound/soc/qcom/Makefile | 2 + sound/soc/qcom/sc7180.c | 410 ++++++++++++++++++++++++++++++++++++++++ 3 files changed, 423 insertions(+) create mode 100644 sound/soc/qcom/sc7180.c diff --git a/sound/soc/qcom/Kconfig b/sound/soc/qcom/Kconfig index cfca0f730c61..4adc2362865b 100644 --- a/sound/soc/qcom/Kconfig +++ b/sound/soc/qcom/Kconfig @@ -109,3 +109,14 @@ config SND_SOC_SDM845 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. + +config SND_SOC_SC7180 + tristate "SoC Machine driver for SC7180 boards" + depends on SND_SOC_QCOM + select SND_SOC_LPASS_SC7180 + select SND_SOC_MAX98357A + select SND_SOC_RT5682 + help + To add support for audio on Qualcomm Technologies Inc. + SC7180 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 41b2c7a23a4d..3f6275d90526 100644 --- a/sound/soc/qcom/Makefile +++ b/sound/soc/qcom/Makefile @@ -15,12 +15,14 @@ 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 +snd-soc-sc7180-objs := sc7180.o snd-soc-qcom-common-objs := common.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 +obj-$(CONFIG_SND_SOC_SC7180) += snd-soc-sc7180.o obj-$(CONFIG_SND_SOC_QCOM_COMMON) += snd-soc-qcom-common.o #DSP lib diff --git a/sound/soc/qcom/sc7180.c b/sound/soc/qcom/sc7180.c new file mode 100644 index 000000000000..cbe6b487d432 --- /dev/null +++ b/sound/soc/qcom/sc7180.c @@ -0,0 +1,410 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Copyright (c) 2020, The Linux Foundation. All rights reserved. + * + * sc7180.c -- ALSA SoC Machine driver for SC7180 + */ + +#include <linux/module.h> +#include <linux/platform_device.h> +#include <linux/of_device.h> +#include <sound/core.h> +#include <sound/pcm.h> +#include <sound/pcm_params.h> +#include <sound/jack.h> +#include <sound/soc.h> +#include <uapi/linux/input-event-codes.h> +#include <dt-bindings/sound/sc7180-lpass.h> +#include "../codecs/rt5682.h" +#include "common.h" +#include "lpass.h" + +#define DEFAULT_SAMPLE_RATE_48K 48000 +#define DEFAULT_MCLK_RATE 19200000 +#define RT5682_PLL1_FREQ (48000 * 512) + +int sc7180_parse_of(struct snd_soc_card *card) +{ + struct device_node *np; + struct device_node *codec = NULL; + struct device_node *platform = NULL; + struct device_node *cpu = NULL; + struct device *dev = card->dev; + struct snd_soc_dai_link *link; + struct of_phandle_args args; + struct snd_soc_dai_link_component *dlc; + int ret, num_links, dir; + + ret = snd_soc_of_parse_card_name(card, "model"); + if (ret) { + dev_err(dev, "Error parsing card name: %d\n", ret); + return ret; + } + + /* DAPM routes */ + if (of_property_read_bool(dev->of_node, "audio-routing")) { + ret = snd_soc_of_parse_audio_routing(card, + "audio-routing"); + if (ret) + return ret; + } + + /* Populate links */ + num_links = of_get_child_count(dev->of_node); + + /* Allocate the DAI link array */ + card->dai_link = kcalloc(num_links, sizeof(*link), GFP_KERNEL); + if (!card->dai_link) + return -ENOMEM; + + card->num_links = num_links; + link = card->dai_link; + + for_each_child_of_node(dev->of_node, np) { + dlc = devm_kzalloc(dev, 2 * sizeof(*dlc), GFP_KERNEL); + if (!dlc) + return -ENOMEM; + + link->cpus = &dlc[0]; + link->platforms = &dlc[1]; + + link->num_cpus = 1; + link->num_platforms = 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 err; + } + + of_property_read_u32(np, "unidirectional", &dir); + if (dir == 0) + link->playback_only = 1; + else if (dir == 1) + link->capture_only = 1; + + cpu = of_get_child_by_name(np, "cpu"); + codec = of_get_child_by_name(np, "codec"); + + if (!cpu) { + dev_err(dev, "%s: Can't find cpu DT node\n", + link->name); + ret = -EINVAL; + goto err; + } + + ret = of_parse_phandle_with_args(cpu, "sound-dai", + "#sound-dai-cells", 0, &args); + if (ret) { + dev_err(card->dev, "%s: error getting cpu phandle\n", + link->name); + goto err; + } + link->cpus->of_node = args.np; + link->id = args.args[0]; + + ret = snd_soc_of_get_dai_name(cpu, &link->cpus->dai_name); + if (ret) { + dev_err(card->dev, "%s: error getting cpu dai name\n", + link->name); + goto err; + } + + if (codec) { + ret = snd_soc_of_get_dai_link_codecs(dev, codec, link); + if (ret < 0) { + dev_err(card->dev, "%s: codec dai not found\n", + link->name); + goto err; + } + } else { + dlc = devm_kzalloc(dev, sizeof(*dlc), GFP_KERNEL); + if (!dlc) + return -ENOMEM; + + link->codecs = dlc; + link->num_codecs = 1; + + link->codecs->dai_name = "snd-soc-dummy-dai"; + link->codecs->name = "snd-soc-dummy"; + } + + link->platforms->of_node = link->cpus->of_node; + link->stream_name = link->name; + link++; + + of_node_put(cpu); + of_node_put(codec); + } + + return 0; +err: + of_node_put(np); + of_node_put(cpu); + of_node_put(codec); + of_node_put(platform); + kfree(card->dai_link); + return ret; +} + +struct sc7180_snd_data { + struct snd_soc_jack jack; + bool jack_setup; + struct snd_soc_card *card; + u32 pri_mi2s_clk_count; +}; + +static int sc7180_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 = asoc_rtd_to_cpu(rtd, 0); + int ret = 0; + + switch (cpu_dai->id) { + case MI2S_PRIMARY: + break; + case MI2S_SECONDARY: + break; + default: + pr_err("%s: invalid dai id 0x%x\n", __func__, cpu_dai->id); + break; + } + return ret; +} + +static void sc7180_jack_free(struct snd_jack *jack) +{ + struct snd_soc_component *component = jack->private_data; + + snd_soc_component_set_jack(component, NULL, NULL); +} + +static int sc7180_dai_init(struct snd_soc_pcm_runtime *rtd) +{ + struct snd_soc_component *component; + struct snd_soc_card *card = rtd->card; + struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0); + struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0); + struct sc7180_snd_data *pdata = snd_soc_card_get_drvdata(card); + struct snd_jack *jack; + int rval; + + if (!pdata->jack_setup) { + rval = snd_soc_card_jack_new( + card, "Headset Jack", + SND_JACK_HEADSET | + SND_JACK_HEADPHONE | + SND_JACK_BTN_0 | SND_JACK_BTN_1 | + SND_JACK_BTN_2 | SND_JACK_BTN_3, + &pdata->jack, NULL, 0); + + if (rval < 0) { + dev_err(card->dev, "Unable to add Headphone Jack\n"); + return rval; + } + + jack = pdata->jack.jack; + + snd_jack_set_key(jack, SND_JACK_BTN_0, KEY_PLAYPAUSE); + snd_jack_set_key(jack, SND_JACK_BTN_1, KEY_VOICECOMMAND); + snd_jack_set_key(jack, SND_JACK_BTN_2, KEY_VOLUMEUP); + snd_jack_set_key(jack, SND_JACK_BTN_3, KEY_VOLUMEDOWN); + pdata->jack_setup = true; + } + + switch (cpu_dai->id) { + case MI2S_PRIMARY: + jack = pdata->jack.jack; + component = codec_dai->component; + + jack->private_data = component; + jack->private_free = sc7180_jack_free; + rval = snd_soc_component_set_jack(component, + &pdata->jack, NULL); + if (rval != 0 && rval != -EOPNOTSUPP) { + dev_warn(card->dev, "Failed to set jack: %d\n", rval); + return rval; + } + break; + case MI2S_SECONDARY: + break; + default: + pr_err("%s: invalid dai id 0x%x\n", __func__, cpu_dai->id); + break; + } + + return 0; +} + +static int sc7180_snd_startup(struct snd_pcm_substream *substream) +{ + unsigned int codec_dai_fmt = SND_SOC_DAIFMT_CBS_CFS; + struct snd_soc_pcm_runtime *rtd = substream->private_data; + struct snd_soc_card *card = rtd->card; + struct sc7180_snd_data *data = snd_soc_card_get_drvdata(card); + struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0); + struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0); + int ret; + + switch (cpu_dai->id) { + case MI2S_PRIMARY: + codec_dai_fmt |= SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_I2S; + if (++data->pri_mi2s_clk_count == 1) { + snd_soc_dai_set_sysclk(cpu_dai, + LPASS_MCLK0, + DEFAULT_MCLK_RATE, + SNDRV_PCM_STREAM_PLAYBACK); + } + snd_soc_dai_set_fmt(codec_dai, codec_dai_fmt); + + /* Configure PLL1 for codec */ + ret = snd_soc_dai_set_pll(codec_dai, 0, RT5682_PLL1_S_MCLK, + DEFAULT_MCLK_RATE, RT5682_PLL1_FREQ); + if (ret < 0) { + dev_err(rtd->dev, "can't set codec pll: %d\n", ret); + return ret; + } + + /* Configure sysclk for codec */ + ret = snd_soc_dai_set_sysclk(codec_dai, RT5682_SCLK_S_PLL1, + RT5682_PLL1_FREQ, + SND_SOC_CLOCK_IN); + if (ret < 0) + dev_err(rtd->dev, "snd_soc_dai_set_sysclk err = %d\n", + ret); + + break; + case MI2S_SECONDARY: + break; + default: + pr_err("%s: invalid dai id 0x%x\n", __func__, cpu_dai->id); + break; + } + return 0; +} + +static void sc7180_snd_shutdown(struct snd_pcm_substream *substream) +{ + struct snd_soc_pcm_runtime *rtd = substream->private_data; + struct snd_soc_card *card = rtd->card; + struct sc7180_snd_data *data = snd_soc_card_get_drvdata(card); + struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0); + + switch (cpu_dai->id) { + case MI2S_PRIMARY: + if (--data->pri_mi2s_clk_count == 0) { + snd_soc_dai_set_sysclk(cpu_dai, + LPASS_MCLK0, + 0, + SNDRV_PCM_STREAM_PLAYBACK); + } + break; + case MI2S_SECONDARY: + break; + default: + pr_err("%s: invalid dai id 0x%x\n", __func__, cpu_dai->id); + break; + } +} + +static const struct snd_soc_ops sc7180_be_ops = { + .hw_params = sc7180_snd_hw_params, + .startup = sc7180_snd_startup, + .shutdown = sc7180_snd_shutdown, +}; + +static const struct snd_soc_dapm_widget sc7180_snd_widgets[] = { + SND_SOC_DAPM_HP("Headphone Jack", NULL), + SND_SOC_DAPM_MIC("Headset Mic", NULL), +}; + +static void sc7180_add_ops(struct snd_soc_card *card) +{ + struct snd_soc_dai_link *link; + int i; + + for_each_card_prelinks(card, i, link) { + link->ops = &sc7180_be_ops; + link->init = sc7180_dai_init; + } +} + +static int sc7180_snd_platform_probe(struct platform_device *pdev) +{ + struct snd_soc_card *card; + struct sc7180_snd_data *data; + struct device *dev = &pdev->dev; + int ret; + + card = kzalloc(sizeof(*card), GFP_KERNEL); + if (!card) + return -ENOMEM; + + /* Allocate the private data */ + data = kzalloc(sizeof(*data), GFP_KERNEL); + if (!data) { + ret = -ENOMEM; + goto data_alloc_fail; + } + + card->dapm_widgets = sc7180_snd_widgets; + card->num_dapm_widgets = ARRAY_SIZE(sc7180_snd_widgets); + card->dev = dev; + dev_set_drvdata(dev, card); + ret = sc7180_parse_of(card); + if (ret) { + dev_err(dev, "Error parsing OF data\n"); + goto parse_dt_fail; + } + + data->card = card; + snd_soc_card_set_drvdata(card, data); + + sc7180_add_ops(card); + 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: + kfree(card->dai_link); +parse_dt_fail: + kfree(data); +data_alloc_fail: + kfree(card); + return ret; +} + +static int sc7180_snd_platform_remove(struct platform_device *pdev) +{ + struct snd_soc_card *card = dev_get_drvdata(&pdev->dev); + struct sc7180_snd_data *data = snd_soc_card_get_drvdata(card); + + snd_soc_unregister_card(card); + kfree(card->dai_link); + kfree(data); + kfree(card); + return 0; +} + +static const struct of_device_id sc7180_snd_device_id[] = { + { .compatible = "qcom,sc7180-sndcard" }, + {}, +}; +MODULE_DEVICE_TABLE(of, sc7180_snd_device_id); + +static struct platform_driver sc7180_snd_driver = { + .probe = sc7180_snd_platform_probe, + .remove = sc7180_snd_platform_remove, + .driver = { + .name = "msm-snd-sc7180", + .of_match_table = sc7180_snd_device_id, + }, +}; +module_platform_driver(sc7180_snd_driver); + +MODULE_DESCRIPTION("sc7180 ASoC Machine Driver"); +MODULE_LICENSE("GPL v2"); -- 2.28.0.rc0.105.gf9edc3c819-goog
