El Thu, Aug 10, 2017 at 12:54:56PM +0800 Jeffy Chen ha dit: > Refactor rockchip_sound_probe, parse dai links from dts instead of > hard coding them.
Mark doesn't seem to be overly convinced that 'rockchip,codec-names' is a good idea (https://lkml.org/lkml/2017/8/10/511). How about using something like this instead: static const char *dailink_compat[] = { [DAILINK_MAX98357A] = "maxim,max98357a", [DAILINK_RT5514] = "realtek,rt5514", [DAILINK_DA7219] = "dlg,da7219", }; ... static int rockchip_sound_probe(struct platform_device *pdev) { ... for (i = 0; ; i++) { struct device_node *codec_node; int j; codec_node = of_parse_phandle(pdev->dev.of_node, "rockchip,codec", i); if (!codec_node) break; for (j = 0; j < DAILINK_ENTITIES; j++) { if (of_device_is_compatible(codec_node, dailink_compat[j])) break; } if (j == DAILINK_ENTITIES) { dev_err(...); return -EINVAL; } rockchip_dailinks[j].codec_of_node = codec_node; rockchip_dailinks[j].platform_of_node = cpu_node; rockchip_dailinks[j].cpu_of_node = cpu_node; /* not strictly needed, could also check for rockchip_dailinks[DAILINK_RT5514].cpu_of_node or so */ if (j == DAILINK_RT5514) has_rt5514 = true; } ... } Matthias > Signed-off-by: Jeffy Chen <jeffy.c...@rock-chips.com> > --- > > Changes in v2: > Let rockchip,codec-names be a required property, because we plan to > add more supported codecs to the fixed dai link list in the driver. > > sound/soc/rockchip/rk3399_gru_sound.c | 125 > ++++++++++++++++++++++------------ > 1 file changed, 81 insertions(+), 44 deletions(-) > > diff --git a/sound/soc/rockchip/rk3399_gru_sound.c > b/sound/soc/rockchip/rk3399_gru_sound.c > index 3475c61..03b7fae 100644 > --- a/sound/soc/rockchip/rk3399_gru_sound.c > +++ b/sound/soc/rockchip/rk3399_gru_sound.c > @@ -247,9 +247,7 @@ enum { > DAILINK_RT5514_DSP, > }; > > -#define DAILINK_ENTITIES (DAILINK_DA7219 + 1) > - > -static struct snd_soc_dai_link rockchip_dailinks[] = { > +static const struct snd_soc_dai_link rockchip_dais[] = { > [DAILINK_MAX98357A] = { > .name = "MAX98357A", > .stream_name = "MAX98357A PCM", > @@ -290,8 +288,6 @@ static struct snd_soc_dai_link rockchip_dailinks[] = { > static struct snd_soc_card rockchip_sound_card = { > .name = "rk3399-gru-sound", > .owner = THIS_MODULE, > - .dai_link = rockchip_dailinks, > - .num_links = ARRAY_SIZE(rockchip_dailinks), > .dapm_widgets = rockchip_dapm_widgets, > .num_dapm_widgets = ARRAY_SIZE(rockchip_dapm_widgets), > .dapm_routes = rockchip_dapm_routes, > @@ -305,71 +301,112 @@ static int rockchip_sound_match_stub(struct device > *dev, void *data) > return 1; > } > > -static int rockchip_sound_probe(struct platform_device *pdev) > +static int rockchip_sound_of_parse_dais(struct device *dev, > + struct snd_soc_card *card) > { > - struct snd_soc_card *card = &rockchip_sound_card; > + struct device *rt5514_dev; > + struct device_driver *rt5514_drv; > struct device_node *cpu_node; > - struct device *dev; > - struct device_driver *drv; > - int i, ret; > - > - cpu_node = of_parse_phandle(pdev->dev.of_node, "rockchip,cpu", 0); > - if (!cpu_node) { > - dev_err(&pdev->dev, "Property 'rockchip,cpu' missing or > invalid\n"); > - return -EINVAL; > - } > - > - for (i = 0; i < DAILINK_ENTITIES; i++) { > - rockchip_dailinks[i].platform_of_node = cpu_node; > - rockchip_dailinks[i].cpu_of_node = cpu_node; > + struct device_node *np_codec; > + struct snd_soc_dai_link *dai; > + bool has_rt5514 = false; > + int i, index, ret; > + > + card->dai_link = devm_kzalloc(dev, sizeof(rockchip_dais), > + GFP_KERNEL); > + if (!card->dai_link) > + return -ENOMEM; > + > + cpu_node = of_parse_phandle(dev->of_node, "rockchip,cpu", 0); > + > + card->num_links = 0; > + for (i = 0; i < DAILINK_RT5514_DSP; i++) { > + index = of_property_match_string(dev->of_node, > + "rockchip,codec-names", > + rockchip_dais[i].name); > + if (index < 0) > + continue; > + > + np_codec = of_parse_phandle(dev->of_node, > + "rockchip,codec", index); > + if (!np_codec) { > + dev_err(dev, "Missing 'rockchip,codec' for %s\n", > + rockchip_dais[i].name); > + return -EINVAL; > + } > + if (!of_device_is_available(np_codec)) > + continue; > > - rockchip_dailinks[i].codec_of_node = > - of_parse_phandle(pdev->dev.of_node, "rockchip,codec", > i); > - if (!rockchip_dailinks[i].codec_of_node) { > - dev_err(&pdev->dev, > - "Property[%d] 'rockchip,codec' missing or > invalid\n", i); > + if (!cpu_node) { > + dev_err(dev, "Missing 'rockchip,cpu' for %s\n", > + rockchip_dais[i].name); > return -EINVAL; > } > + > + dai = &card->dai_link[card->num_links++]; > + *dai = rockchip_dais[i]; > + > + dai->codec_of_node = np_codec; > + dai->platform_of_node = cpu_node; > + dai->cpu_of_node = cpu_node; > + > + if (i == DAILINK_RT5514) > + has_rt5514 = true; > } > > + if (!has_rt5514) > + return 0; > + > /** > * To acquire the spi driver of the rt5514 and set the dai-links names > * for soc_bind_dai_link > */ > - drv = driver_find("rt5514", &spi_bus_type); > - if (!drv) { > - dev_err(&pdev->dev, "Can not find the rt5514 driver at the spi > bus\n"); > + rt5514_drv = driver_find("rt5514", &spi_bus_type); > + if (!rt5514_drv) { > + dev_err(dev, "Can not find the rt5514 driver at the spi bus\n"); > return -EINVAL; > } > > - dev = driver_find_device(drv, NULL, NULL, rockchip_sound_match_stub); > - if (!dev) { > - dev_err(&pdev->dev, "Can not find the rt5514 device\n"); > + rt5514_dev = driver_find_device(rt5514_drv, NULL, NULL, > + rockchip_sound_match_stub); > + if (!rt5514_dev) { > + dev_err(dev, "Can not find the rt5514 device\n"); > return -ENODEV; > } > > /* Set DMIC delay */ > - ret = device_property_read_u32(&pdev->dev, "dmic-delay", > - &rt5514_dmic_delay); > - if (ret) { > + ret = device_property_read_u32(dev, "dmic-delay", &rt5514_dmic_delay); > + if (ret < 0) { > rt5514_dmic_delay = 0; > - dev_dbg(&pdev->dev, > + dev_dbg(dev, > "no optional property 'dmic-delay' found, default: no > delay\n"); > } > > - rockchip_dailinks[DAILINK_RT5514_DSP].cpu_name = > kstrdup_const(dev_name(dev), GFP_KERNEL); > - rockchip_dailinks[DAILINK_RT5514_DSP].cpu_dai_name = > kstrdup_const(dev_name(dev), GFP_KERNEL); > - rockchip_dailinks[DAILINK_RT5514_DSP].platform_name = > kstrdup_const(dev_name(dev), GFP_KERNEL); > + dai = &card->dai_link[card->num_links++]; > + *dai = rockchip_dais[DAILINK_RT5514_DSP]; > + > + dai->cpu_name = devm_kstrdup(dev, dev_name(rt5514_dev), GFP_KERNEL); > + dai->cpu_dai_name = dai->cpu_name; > + dai->platform_name = dai->cpu_name; > + > + return 0; > +} > + > +static int rockchip_sound_probe(struct platform_device *pdev) > +{ > + struct snd_soc_card *card = &rockchip_sound_card; > + int ret; > + > + ret = rockchip_sound_of_parse_dais(&pdev->dev, card); > + if (ret < 0) { > + dev_err(&pdev->dev, "Failed to parse dais: %d\n", ret); > + return ret; > + } > > card->dev = &pdev->dev; > platform_set_drvdata(pdev, card); > > - ret = devm_snd_soc_register_card(&pdev->dev, card); > - if (ret) > - dev_err(&pdev->dev, "%s snd_soc_register_card fail %d\n", > - __func__, ret); > - > - return ret; > + return devm_snd_soc_register_card(&pdev->dev, card); > } > > static const struct of_device_id rockchip_sound_of_match[] = {
