Messages in this thread | | | Subject | Re: [PATCH v2 2/2] ASoC: qcom: sc7180: Add machine driver for sound card registration | From | Srinivas Kandagatla <> | Date | Wed, 22 Jul 2020 10:25:14 +0100 |
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Few comments apart from Tzung-Bi comments,
On 21/07/2020 11:44, Cheng-Yi Chiang wrote: > From: Ajit Pandey <ajitp@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: Cheng-Yi Chiang <cychiang@chromium.org> > --- > sound/soc/qcom/Kconfig | 11 ++ > sound/soc/qcom/Makefile | 2 + > sound/soc/qcom/sc7180.c | 380 ++++++++++++++++++++++++++++++++++++++++ > 3 files changed, 393 insertions(+) > create mode 100644 sound/soc/qcom/sc7180.c >
> diff --git a/sound/soc/qcom/sc7180.c b/sound/soc/qcom/sc7180.c > new file mode 100644 > index 000000000000..3beb2b129d01 > --- /dev/null > +++ b/sound/soc/qcom/sc7180.c > @@ -0,0 +1,380 @@ > +// 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 <dt-bindings/sound/sc7180-lpass.h> > +#include <linux/module.h> > +#include <linux/of_device.h> > +#include <linux/platform_device.h> > +#include <sound/core.h> > +#include <sound/jack.h> > +#include <sound/pcm.h> > +#include <sound/pcm_params.h> > +#include <sound/soc.h> > +#include <uapi/linux/input-event-codes.h> > + > +#include "../codecs/rt5682.h" > +#include "common.h"
What is that you are using from this header?
> +#include "lpass.h" > + > +#define DEFAULT_SAMPLE_RATE_48K 48000 > +#define DEFAULT_MCLK_RATE 19200000 > +#define RT5682_PLL1_FREQ (48000 * 512) > + > +static int sc7180_headset_init(struct snd_soc_component *component); > + > +static struct snd_soc_aux_dev sc7180_headset_dev = { > + .dlc = COMP_EMPTY(), > + .init = sc7180_headset_init, > +};
Can you explain why can you not use snd_soc_component_set_jack() on the codec component from link->init() callback?
> + > +struct sc7180_snd_data { > + struct snd_soc_jack jack; > + struct snd_soc_card *card; > + u32 pri_mi2s_clk_count; > +}; > + > +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_headset_init(struct snd_soc_component *component) > +{ > + struct snd_soc_card *card = component->card; > + struct sc7180_snd_data *pdata = snd_soc_card_get_drvdata(card); > + struct snd_jack *jack; > + int rval; > + > + 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 Headset 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); > + > + 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; > + } > + > + return 0; > +} > + > + > +static unsigned int primary_dai_fmt = SND_SOC_DAIFMT_CBS_CFS | > + SND_SOC_DAIFMT_NB_NF | > + SND_SOC_DAIFMT_I2S; > + > +static int sc7180_snd_startup(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); > + struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0); > + int ret; > + > + switch (cpu_dai->id) { > + case MI2S_PRIMARY: > + 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, primary_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: > + dev_err(rtd->dev, "%s: invalid dai id 0x%x\n", __func__, > + cpu_dai->id); > + return -EINVAL; > + } > + 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: > + dev_err(rtd->dev, "%s: invalid dai id 0x%x\n", __func__, > + cpu_dai->id); > + break; > + } > +} > + > +static const struct snd_soc_ops sc7180_ops = { > + .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 struct snd_soc_card sc7180_card = { > + .owner = THIS_MODULE, > + .aux_dev = &sc7180_headset_dev, > + .num_aux_devs = 1, > + .dapm_widgets = sc7180_snd_widgets, > + .num_dapm_widgets = ARRAY_SIZE(sc7180_snd_widgets), > +}; > + > +static int sc7180_parse_of(struct snd_soc_card *card) > +{
This code is getting duplicated in various places like apq8016_sbc_parse_of, it will be nice to common this up, if possible!
> + 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; > + > + 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; > + } > + > + /* headset aux dev. */ > + sc7180_headset_dev.dlc.of_node = of_parse_phandle( > + dev->of_node, "aux-dev", 0); > + if (!sc7180_headset_dev.dlc.of_node) { > + dev_err(dev, > + "Property 'aux-dev' missing/invalid\n"); > + return -EINVAL; > + } > + > + /* Populate links */ > + num_links = of_get_child_count(dev->of_node); > + > + /* Allocate the DAI link array */ > + card->dai_link = devm_kcalloc(dev, 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; > + } > + > + link->playback_only = of_property_read_bool(np, > + "playback_only"); > + link->capture_only = of_property_read_bool(np, > + "capture_only");
Does this even work?? You have replaced "-" with "_" for property name?
> + > + if (link->playback_only && link->capture_only) { > + dev_err(card->dev, > + "getting both playback and capture only\n"); > + goto err; > + } > + > + 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->ops = &sc7180_ops; > + 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); > + return ret; > +} > + > +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 = &sc7180_card; > + > + /* Allocate the private data */ > + data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL); > + if (!data) > + return -ENOMEM; > + > + 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"); > + return ret; > + } > + > + data->card = card; > + snd_soc_card_set_drvdata(card, data); > + > + ret = snd_soc_register_card(card);
devm_snd_soc_register_card()??
> + if (ret) { > + dev_err(dev, "Sound card registration failed\n"); > + return ret; > + } > + return ret; > +} > + > +static int sc7180_snd_platform_remove(struct platform_device *pdev) > +{ > + struct snd_soc_card *card = dev_get_drvdata(&pdev->dev); > + > + snd_soc_unregister_card(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"); >
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