| Message ID | 20200721104422.369368-3-cychiang@chromium.org (mailing list archive) |
|---|---|
| State | Superseded |
| Headers | show |
| Series | Add documentation and machine driver for SC7180 sound card | expand |
On Tue, Jul 21, 2020 at 6:44 PM Cheng-Yi Chiang <cychiang@chromium.org> wrote: > 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 Insert an extra space between // and text to make it look better. > +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, > +}; Move definition of sc7180_headset_dev after sc7180_headset_init( ) so that you don't need forward declaration of sc7180_headset_init( ). > +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); My comment on the previous thread may mislead. My original intent: move the DAIFMT setting to DAI link->dai_fmt in sc7180_parse_of( ). If you need to keep it as is: inline the SND_SOC_DAIFMT_* into snd_soc_dai_set_fmt( ) (i.e. eliminate primary_dai_fmt). > +static int sc7180_parse_of(struct snd_soc_card *card) > +{ > + struct device_node *np; > + struct device_node *codec = NULL; > + struct device_node *platform = NULL; The function doesn't use platform. > + 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); Eliminate num_links but use card->num_links directly. > + > + /* 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; Ditto, eliminate it. > + link = card->dai_link; > + Eliminate the blank line to make "link = card->dai_link" and the following for-loop "a whole thing". > + 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"); > + > + if (link->playback_only && link->capture_only) { > + dev_err(card->dev, > + "getting both playback and capture only\n"); ret = -EINVAL; > + goto err; > + } > + > + cpu = of_get_child_by_name(np, "cpu"); > + codec = of_get_child_by_name(np, "codec"); Move to below. > + > + 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); I may overlook it but I failed to find "#sound-dai-cells" in the dt-binding example. I think it should be in DTS? > + 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]; I am not quite sure what it will be. I guess one of the following comes from DTS node name. #define MI2S_PRIMARY 0 #define MI2S_SECONDARY 1 > + > + 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; > + } > + Move "codec = of_get_child_by_name(np, "codec");" to here. > + 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); cpu = NULL; codec = NULL; In case of double of_node_put( ). > + } > + > + return 0; > +err: > + of_node_put(np); I guess you don't need this. > + of_node_put(cpu); > + of_node_put(codec); > + of_node_put(platform); Eliminate it, not used. > +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; In this case, inline the initialization while declaration. > + > + /* 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); Remove them. > + card->dev = dev; > + dev_set_drvdata(dev, card); I guess you don't need this if using devm_snd_soc_register_card(...). Insert a blank line. > + ret = sc7180_parse_of(card); > + if (ret) { > + dev_err(dev, "Error parsing OF data\n"); > + return ret; > + } > + > + data->card = card; Looks like data->card is not used. > + snd_soc_card_set_drvdata(card, data); > + > + ret = snd_soc_register_card(card); > + if (ret) { > + dev_err(dev, "Sound card registration failed\n"); > + return ret; > + } > + return ret; Just return devm_snd_soc_register_card(...); > +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; > +} Can be removed if using devm_snd_soc_register_card( ). I didn't go through all the cases. But it would be better if all "if (ret < 0)" can be replaced to "if (ret)".
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"); >
On Wed, Jul 22, 2020 at 10:25:14AM +0100, Srinivas Kandagatla wrote: > > +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! > FYI, I started work on making apq8016_sbc use qcom_snd_parse_of() a while ago already, but didn't find the time to finish it up. I have now sent it, this should make it possible to use the common qcom_snd_parse_of() function in this driver as well. See: https://lore.kernel.org/alsa-devel/20200723183904.321040-1-stephan@gerhold.net/ Stephan
On Wed, Jul 22, 2020 at 11:15 AM Tzung-Bi Shih <tzungbi@google.com> wrote: > > On Tue, Jul 21, 2020 at 6:44 PM Cheng-Yi Chiang <cychiang@chromium.org> wrote: > > 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 > Insert an extra space between // and text to make it look better. > Fixed in v3. > > +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, > > +}; > Move definition of sc7180_headset_dev after sc7180_headset_init( ) so > that you don't need forward declaration of sc7180_headset_init( ). > Fixed in v3. > > +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); > My comment on the previous thread may mislead. My original intent: > move the DAIFMT setting to DAI link->dai_fmt in sc7180_parse_of( ). > > If you need to keep it as is: inline the SND_SOC_DAIFMT_* into > snd_soc_dai_set_fmt( ) (i.e. eliminate primary_dai_fmt). > Fixed in v3. Since in v3 I am reusing parse function in common.c, I will keep the format setting in startup. > > +static int sc7180_parse_of(struct snd_soc_card *card) > > +{ > > + struct device_node *np; > > + struct device_node *codec = NULL; > > + struct device_node *platform = NULL; > The function doesn't use platform. > sc7180_parse_of is removed in v3. > > + 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); > Eliminate num_links but use card->num_links directly. > > > + > > + /* 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; > Ditto, eliminate it. > > > + link = card->dai_link; > > + > Eliminate the blank line to make "link = card->dai_link" and the > following for-loop "a whole thing". > > > + 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"); > > + > > + if (link->playback_only && link->capture_only) { > > + dev_err(card->dev, > > + "getting both playback and capture only\n"); > ret = -EINVAL; > > > + goto err; > > + } > > + > > + cpu = of_get_child_by_name(np, "cpu"); > > + codec = of_get_child_by_name(np, "codec"); > Move to below. > > > + > > + 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); > I may overlook it but I failed to find "#sound-dai-cells" in the > dt-binding example. I think it should be in DTS? > > > + 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]; > I am not quite sure what it will be. I guess one of the following > comes from DTS node name. > #define MI2S_PRIMARY 0 > #define MI2S_SECONDARY 1 > > > + > > + 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; > > + } > > + > > Move "codec = of_get_child_by_name(np, "codec");" to here. > > + 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); > cpu = NULL; > codec = NULL; > In case of double of_node_put( ). > > > + } > > + > > + return 0; > > +err: > > + of_node_put(np); > I guess you don't need this. > > > + of_node_put(cpu); > > + of_node_put(codec); > > + of_node_put(platform); > Eliminate it, not used. > > > +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; > In this case, inline the initialization while declaration. > Fixed in v3. > > + > > + /* 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); > Remove them. > Fixed in v3. > > + card->dev = dev; > > + dev_set_drvdata(dev, card); > I guess you don't need this if using devm_snd_soc_register_card(...). > > Insert a blank line. Fixed in v3. > > + ret = sc7180_parse_of(card); > > + if (ret) { > > + dev_err(dev, "Error parsing OF data\n"); > > + return ret; > > + } > > + > > + data->card = card; > Looks like data->card is not used. > Removed in v3. > > + snd_soc_card_set_drvdata(card, data); > > + > > + ret = snd_soc_register_card(card); > > + if (ret) { > > + dev_err(dev, "Sound card registration failed\n"); > > + return ret; > > + } > > + return ret; > Just return devm_snd_soc_register_card(...); > Fixed in v3. > > +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; > > +} > Can be removed if using devm_snd_soc_register_card( ). > > Removed in v3. > I didn't go through all the cases. But it would be better if all "if > (ret < 0)" can be replaced to "if (ret)". Fixed in v3. Thanks for the review!
On Wed, Jul 22, 2020 at 5:25 PM Srinivas Kandagatla <srinivas.kandagatla@linaro.org> wrote: > > Few comments apart from Tzung-Bi comments, > Thanks a lot for reviewing the patch! > 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? > It is not used in v2, but will be used in v3. > > +#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? > I am using snd_soc_component_set_jack, but only on aux device. As Tzungbi suggested in his comment on v1 machine driver patch, the current approach in other qcom driver like sdm845.c and apq8016_sbc.c of setting jack is not clean. For example, in sdm845.c, a bool jack_etup is needed in sdm845_snd_data so that jack will be created once. Also, the machine driver assumes that snd_soc_component_set_jack is used when cpu_dai->id == PRIMARY_MI2S_RX, which is not easy to understand. In apq8016_sbc.c, apq8016_sbc_dai_init tries to set jack on every codec_dai which does not make sense. These downsides can be avoided by using aux-dev so that the logic of setting jack is easy to understand, and dai_init function can be much cleaner. > > + > > +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! > > Thanks for the refactoring work of Stephan I can reuse qcom_snd_parse_of. > > + 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? > This does not work because of the typo. But it is not needed so I removed it in v3. soc_new_pcm already takes care of capability in non-dpcm case. > > + > > + 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()?? > Fixed in v3. > > + 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"); > >
On Fri, Jul 24, 2020 at 2:45 AM Stephan Gerhold <stephan@gerhold.net> wrote: > > On Wed, Jul 22, 2020 at 10:25:14AM +0100, Srinivas Kandagatla wrote: > > > +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! > > > > FYI, I started work on making apq8016_sbc use qcom_snd_parse_of() > a while ago already, but didn't find the time to finish it up. > I have now sent it, this should make it possible to use the common > qcom_snd_parse_of() function in this driver as well. > > See: https://lore.kernel.org/alsa-devel/20200723183904.321040-1-stephan@gerhold.net/ > > Stephan > Hi Stephan, thanks a lot for jumping on this to help. It indeed makes this new driver much cleaner. I have tested with your patches and it works great.
diff --git a/sound/soc/qcom/Kconfig b/sound/soc/qcom/Kconfig index cfca0f730c61..1b02f521f355 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..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" +#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, +}; + +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) +{ + 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"); + + 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); + 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");