From: Takashi Iwai Date: Fri, 27 Feb 2015 19:44:54 +0000 (+0100) Subject: ALSA: hda - Build PCMs and controls at codec driver probe X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=bcd96557bd0ab1129fcdde073d5700aed8fcb942;p=GitHub%2FLineageOS%2FG12%2Fandroid_kernel_amlogic_linux-4.9.git ALSA: hda - Build PCMs and controls at codec driver probe This makes the code flow easier -- instead of the controller driver calling snd_hda_build_pcms() and snd_hda_build_controls() explicitly, the codec driver itself builds PCMs and controls at probe time. Then the controller driver only needs to call snd_card_register(). Also, this allows us the full bind/unbind control, too. Even when a codec driver is bound later, it automatically registers the new PCM and controls by itself. Signed-off-by: Takashi Iwai --- diff --git a/sound/pci/hda/hda_bind.c b/sound/pci/hda/hda_bind.c index 311896a23cd1..a49bc45c2ea5 100644 --- a/sound/pci/hda/hda_bind.c +++ b/sound/pci/hda/hda_bind.c @@ -106,16 +106,28 @@ static int hda_codec_driver_probe(struct device *dev) } err = codec->preset->patch(codec); - if (err < 0) { - module_put(owner); - goto error; + if (err < 0) + goto error_module; + + err = snd_hda_codec_build_pcms(codec); + if (err < 0) + goto error_module; + err = snd_hda_codec_build_controls(codec); + if (err < 0) + goto error_module; + if (codec->card->registered) { + err = snd_card_register(codec->card); + if (err < 0) + goto error_module; } return 0; + error_module: + module_put(owner); + error: - codec->preset = NULL; - memset(&codec->patch_ops, 0, sizeof(codec->patch_ops)); + snd_hda_codec_cleanup_for_unbind(codec); return err; } diff --git a/sound/pci/hda/hda_codec.c b/sound/pci/hda/hda_codec.c index 2c7e481a9171..7085d3733d0d 100644 --- a/sound/pci/hda/hda_codec.c +++ b/sound/pci/hda/hda_codec.c @@ -4031,36 +4031,6 @@ const struct dev_pm_ops hda_codec_driver_pm = { NULL) }; -/** - * snd_hda_build_controls - build mixer controls - * @bus: the BUS - * - * Creates mixer controls for each codec included in the bus. - * - * Returns 0 if successful, otherwise a negative error code. - */ -int snd_hda_build_controls(struct hda_bus *bus) -{ - struct hda_codec *codec; - - list_for_each_entry(codec, &bus->codec_list, list) { - int err = snd_hda_codec_build_controls(codec); - if (err < 0) { - codec_err(codec, - "cannot build controls for #%d (error %d)\n", - codec->addr, err); - err = snd_hda_codec_reset(codec); - if (err < 0) { - codec_err(codec, - "cannot revert codec\n"); - return err; - } - } - } - return 0; -} -EXPORT_SYMBOL_GPL(snd_hda_build_controls); - /* * add standard channel maps if not specified */ @@ -4692,43 +4662,6 @@ int snd_hda_codec_build_pcms(struct hda_codec *codec) return 0; } -/** - * snd_hda_build_pcms - build PCM information - * @bus: the BUS - * - * Create PCM information for each codec included in the bus. - * - * The build_pcms codec patch is requested to create and assign new - * hda_pcm objects. The codec is responsible to call snd_hda_codec_pcm_new() - * and fills the fields. Later they are instantiated by this function. - * - * At least, substreams, channels_min and channels_max must be filled for - * each stream. substreams = 0 indicates that the stream doesn't exist. - * When rates and/or formats are zero, the supported values are queried - * from the given nid. The nid is used also by the default ops.prepare - * and ops.cleanup callbacks. - * - * The driver needs to call ops.open in its open callback. Similarly, - * ops.close is supposed to be called in the close callback. - * ops.prepare should be called in the prepare or hw_params callback - * with the proper parameters for set up. - * ops.cleanup should be called in hw_free for clean up of streams. - * - * This function returns 0 if successful, or a negative error code. - */ -int snd_hda_build_pcms(struct hda_bus *bus) -{ - struct hda_codec *codec; - - list_for_each_entry(codec, &bus->codec_list, list) { - int err = snd_hda_codec_build_pcms(codec); - if (err < 0) - return err; - } - return 0; -} -EXPORT_SYMBOL_GPL(snd_hda_build_pcms); - /** * snd_hda_add_new_ctls - create controls from the array * @codec: the HDA codec diff --git a/sound/pci/hda/hda_codec.h b/sound/pci/hda/hda_codec.h index fc62ca51fd35..46d253e2f266 100644 --- a/sound/pci/hda/hda_codec.h +++ b/sound/pci/hda/hda_codec.h @@ -516,13 +516,11 @@ void snd_hda_spdif_ctls_assign(struct hda_codec *codec, int idx, hda_nid_t nid); /* * Mixer */ -int snd_hda_build_controls(struct hda_bus *bus); int snd_hda_codec_build_controls(struct hda_codec *codec); /* * PCM */ -int snd_hda_build_pcms(struct hda_bus *bus); int snd_hda_codec_parse_pcms(struct hda_codec *codec); int snd_hda_codec_build_pcms(struct hda_codec *codec); diff --git a/sound/pci/hda/hda_intel.c b/sound/pci/hda/hda_intel.c index f7fb1b51d446..e81461a413b8 100644 --- a/sound/pci/hda/hda_intel.c +++ b/sound/pci/hda/hda_intel.c @@ -1895,16 +1895,6 @@ static int azx_probe_continue(struct azx *chip) goto out_free; } - /* create PCM streams */ - err = snd_hda_build_pcms(chip->bus); - if (err < 0) - goto out_free; - - /* create mixer controls */ - err = snd_hda_build_controls(chip->bus); - if (err < 0) - goto out_free; - err = snd_card_register(chip->card); if (err < 0) goto out_free; diff --git a/sound/pci/hda/hda_tegra.c b/sound/pci/hda/hda_tegra.c index 1359fdd20f02..7586abe91dfb 100644 --- a/sound/pci/hda/hda_tegra.c +++ b/sound/pci/hda/hda_tegra.c @@ -497,16 +497,6 @@ static int hda_tegra_probe(struct platform_device *pdev) if (err < 0) goto out_free; - /* create PCM streams */ - err = snd_hda_build_pcms(chip->bus); - if (err < 0) - goto out_free; - - /* create mixer controls */ - err = snd_hda_build_controls(chip->bus); - if (err < 0) - goto out_free; - err = snd_card_register(chip->card); if (err < 0) goto out_free;