Re: [PATCH 2/4] ALSA: pcm: Make snd_pcm_limit_hw_rates take hw directly

From: Takashi Iwai
Date: Thu Feb 13 2020 - 01:30:25 EST

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In reply to: Samuel Holland: "[PATCH 2/4] ALSA: pcm: Make snd_pcm_limit_hw_rates take hw directly"
Next in thread: Samuel Holland: "Re: [PATCH 2/4] ALSA: pcm: Make snd_pcm_limit_hw_rates take hw directly"
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On Thu, 13 Feb 2020 07:11:45 +0100,
Samuel Holland wrote:
>
> It can be useful to derive min/max rates of a snd_pcm_hardware without
> having a snd_pcm_runtime, such as before constructing an ASoC DAI link.
>
> Since snd_pcm_limit_hw_rates only uses runtime->hw, it does not actually
> need the snd_pcm_runtime. Modify it to take a pointer to hw directly.

I prefer adding a new function and change snd_pcm_limit_hw_rates() to
static inline just calling the new one with &runtime->hw, instead of
touching so many callers site.

thanks,

Takashi

>
> Signed-off-by: Samuel Holland <samuel@xxxxxxxxxxxx>
> ---
> .../gpu/drm/bridge/synopsys/dw-hdmi-ahb-audio.c | 2 +-
> include/sound/pcm.h | 2 +-
> sound/arm/aaci.c | 2 +-
> sound/arm/pxa2xx-ac97.c | 2 +-
> sound/core/pcm_misc.c | 14 +++++++-------
> sound/firewire/dice/dice-pcm.c | 2 +-
> sound/firewire/digi00x/digi00x-pcm.c | 2 +-
> sound/firewire/fireworks/fireworks_pcm.c | 2 +-
> sound/firewire/motu/motu-pcm.c | 2 +-
> sound/firewire/tascam/tascam-pcm.c | 2 +-
> sound/pci/atiixp.c | 2 +-
> sound/pci/cs5535audio/cs5535audio_pcm.c | 4 ++--
> sound/pci/hda/hda_controller.c | 4 ++--
> sound/pci/intel8x0.c | 2 +-
> sound/pci/sis7019.c | 2 +-
> sound/pci/via82xx.c | 4 ++--
> sound/soc/soc-pcm.c | 4 ++--
> sound/usb/caiaq/audio.c | 4 ++--
> 18 files changed, 29 insertions(+), 29 deletions(-)
>
> diff --git a/drivers/gpu/drm/bridge/synopsys/dw-hdmi-ahb-audio.c b/drivers/gpu/drm/bridge/synopsys/dw-hdmi-ahb-audio.c
> index 2b7539701b42..33f7bcf992a4 100644
> --- a/drivers/gpu/drm/bridge/synopsys/dw-hdmi-ahb-audio.c
> +++ b/drivers/gpu/drm/bridge/synopsys/dw-hdmi-ahb-audio.c
> @@ -328,7 +328,7 @@ static int dw_hdmi_open(struct snd_pcm_substream *substream)
> if (ret < 0)
> return ret;
>
> - ret = snd_pcm_limit_hw_rates(runtime);
> + ret = snd_pcm_limit_hw_rates(&runtime->hw);
> if (ret < 0)
> return ret;
>
> diff --git a/include/sound/pcm.h b/include/sound/pcm.h
> index 8a89fa6fdd5e..203b79d2712a 100644
> --- a/include/sound/pcm.h
> +++ b/include/sound/pcm.h
> @@ -1121,7 +1121,7 @@ snd_pcm_kernel_readv(struct snd_pcm_substream *substream,
> return __snd_pcm_lib_xfer(substream, bufs, false, frames, true);
> }
>
> -int snd_pcm_limit_hw_rates(struct snd_pcm_runtime *runtime);
> +int snd_pcm_limit_hw_rates(struct snd_pcm_hardware *hw);
> unsigned int snd_pcm_rate_to_rate_bit(unsigned int rate);
> unsigned int snd_pcm_rate_bit_to_rate(unsigned int rate_bit);
> unsigned int snd_pcm_rate_mask_intersect(unsigned int rates_a,
> diff --git a/sound/arm/aaci.c b/sound/arm/aaci.c
> index b5399b0090a7..5052689247f9 100644
> --- a/sound/arm/aaci.c
> +++ b/sound/arm/aaci.c
> @@ -413,7 +413,7 @@ static int aaci_pcm_open(struct snd_pcm_substream *substream)
> runtime->private_data = aacirun;
> runtime->hw = aaci_hw_info;
> runtime->hw.rates = aacirun->pcm->rates;
> - snd_pcm_limit_hw_rates(runtime);
> + snd_pcm_limit_hw_rates(&runtime->hw);
>
> if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
> runtime->hw.channels_max = 6;
> diff --git a/sound/arm/pxa2xx-ac97.c b/sound/arm/pxa2xx-ac97.c
> index acfaf1d4ec25..cfb23073471e 100644
> --- a/sound/arm/pxa2xx-ac97.c
> +++ b/sound/arm/pxa2xx-ac97.c
> @@ -77,7 +77,7 @@ static int pxa2xx_ac97_pcm_open(struct snd_pcm_substream *substream)
> i = (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) ?
> AC97_RATES_FRONT_DAC : AC97_RATES_ADC;
> runtime->hw.rates = pxa2xx_ac97_ac97->rates[i];
> - snd_pcm_limit_hw_rates(runtime);
> + snd_pcm_limit_hw_rates(&runtime->hw);
>
> platform_ops = substream->pcm->card->dev->platform_data;
> if (platform_ops && platform_ops->startup) {
> diff --git a/sound/core/pcm_misc.c b/sound/core/pcm_misc.c
> index c4eb561d2008..435688855ed0 100644
> --- a/sound/core/pcm_misc.c
> +++ b/sound/core/pcm_misc.c
> @@ -474,25 +474,25 @@ EXPORT_SYMBOL(snd_pcm_format_set_silence);
>
> /**
> * snd_pcm_limit_hw_rates - determine rate_min/rate_max fields
> - * @runtime: the runtime instance
> + * @runtime: the pcm hw instance
> *
> * Determines the rate_min and rate_max fields from the rates bits of
> - * the given runtime->hw.
> + * the given hw.
> *
> * Return: Zero if successful.
> */
> -int snd_pcm_limit_hw_rates(struct snd_pcm_runtime *runtime)
> +int snd_pcm_limit_hw_rates(struct snd_pcm_hardware *hw)
> {
> int i;
> for (i = 0; i < (int)snd_pcm_known_rates.count; i++) {
> - if (runtime->hw.rates & (1 << i)) {
> - runtime->hw.rate_min = snd_pcm_known_rates.list[i];
> + if (hw->rates & (1 << i)) {
> + hw->rate_min = snd_pcm_known_rates.list[i];
> break;
> }
> }
> for (i = (int)snd_pcm_known_rates.count - 1; i >= 0; i--) {
> - if (runtime->hw.rates & (1 << i)) {
> - runtime->hw.rate_max = snd_pcm_known_rates.list[i];
> + if (hw->rates & (1 << i)) {
> + hw->rate_max = snd_pcm_known_rates.list[i];
> break;
> }
> }
> diff --git a/sound/firewire/dice/dice-pcm.c b/sound/firewire/dice/dice-pcm.c
> index be79d659eedf..85941d945067 100644
> --- a/sound/firewire/dice/dice-pcm.c
> +++ b/sound/firewire/dice/dice-pcm.c
> @@ -117,7 +117,7 @@ static int limit_channels_and_rates(struct snd_dice *dice,
> hw->channels_max = max(hw->channels_max, channels);
> }
>
> - snd_pcm_limit_hw_rates(runtime);
> + snd_pcm_limit_hw_rates(hw);
>
> return 0;
> }
> diff --git a/sound/firewire/digi00x/digi00x-pcm.c b/sound/firewire/digi00x/digi00x-pcm.c
> index 57cbce4fd836..0709070ab5af 100644
> --- a/sound/firewire/digi00x/digi00x-pcm.c
> +++ b/sound/firewire/digi00x/digi00x-pcm.c
> @@ -78,7 +78,7 @@ static int pcm_init_hw_params(struct snd_dg00x *dg00x,
> SNDRV_PCM_RATE_48000 |
> SNDRV_PCM_RATE_88200 |
> SNDRV_PCM_RATE_96000;
> - snd_pcm_limit_hw_rates(runtime);
> + snd_pcm_limit_hw_rates(hw);
>
> err = snd_pcm_hw_rule_add(substream->runtime, 0,
> SNDRV_PCM_HW_PARAM_CHANNELS,
> diff --git a/sound/firewire/fireworks/fireworks_pcm.c b/sound/firewire/fireworks/fireworks_pcm.c
> index e69896d748df..2ee8e98ea2b6 100644
> --- a/sound/firewire/fireworks/fireworks_pcm.c
> +++ b/sound/firewire/fireworks/fireworks_pcm.c
> @@ -149,7 +149,7 @@ pcm_init_hw_params(struct snd_efw *efw,
>
> /* limit rates */
> runtime->hw.rates = efw->supported_sampling_rate,
> - snd_pcm_limit_hw_rates(runtime);
> + snd_pcm_limit_hw_rates(&runtime->hw);
>
> limit_channels(&runtime->hw, pcm_channels);
>
> diff --git a/sound/firewire/motu/motu-pcm.c b/sound/firewire/motu/motu-pcm.c
> index 005970931030..338eb0572890 100644
> --- a/sound/firewire/motu/motu-pcm.c
> +++ b/sound/firewire/motu/motu-pcm.c
> @@ -92,7 +92,7 @@ static void limit_channels_and_rates(struct snd_motu *motu,
> hw->channels_max = max(hw->channels_max, pcm_channels);
> }
>
> - snd_pcm_limit_hw_rates(runtime);
> + snd_pcm_limit_hw_rates(hw);
> }
>
> static int init_hw_info(struct snd_motu *motu,
> diff --git a/sound/firewire/tascam/tascam-pcm.c b/sound/firewire/tascam/tascam-pcm.c
> index 8e9b444c8bff..6722c1a65a42 100644
> --- a/sound/firewire/tascam/tascam-pcm.c
> +++ b/sound/firewire/tascam/tascam-pcm.c
> @@ -35,7 +35,7 @@ static int pcm_init_hw_params(struct snd_tscm *tscm,
> SNDRV_PCM_RATE_48000 |
> SNDRV_PCM_RATE_88200 |
> SNDRV_PCM_RATE_96000;
> - snd_pcm_limit_hw_rates(runtime);
> + snd_pcm_limit_hw_rates(hw);
>
> return amdtp_tscm_add_pcm_hw_constraints(stream, runtime);
> }
> diff --git a/sound/pci/atiixp.c b/sound/pci/atiixp.c
> index 1e1ededf8eb2..d7af407306b7 100644
> --- a/sound/pci/atiixp.c
> +++ b/sound/pci/atiixp.c
> @@ -1039,7 +1039,7 @@ static int snd_atiixp_pcm_open(struct snd_pcm_substream *substream,
> dma->ac97_pcm_type = pcm_type;
> if (pcm_type >= 0) {
> runtime->hw.rates = chip->pcms[pcm_type]->rates;
> - snd_pcm_limit_hw_rates(runtime);
> + snd_pcm_limit_hw_rates(&runtime->hw);
> } else {
> /* direct SPDIF */
> runtime->hw.formats = SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_LE;
> diff --git a/sound/pci/cs5535audio/cs5535audio_pcm.c b/sound/pci/cs5535audio/cs5535audio_pcm.c
> index 4642e5384e83..7ce1664a8148 100644
> --- a/sound/pci/cs5535audio/cs5535audio_pcm.c
> +++ b/sound/pci/cs5535audio/cs5535audio_pcm.c
> @@ -84,7 +84,7 @@ static int snd_cs5535audio_playback_open(struct snd_pcm_substream *substream)
>
> runtime->hw = snd_cs5535audio_playback;
> runtime->hw.rates = cs5535au->ac97->rates[AC97_RATES_FRONT_DAC];
> - snd_pcm_limit_hw_rates(runtime);
> + snd_pcm_limit_hw_rates(&runtime->hw);
> cs5535au->playback_substream = substream;
> runtime->private_data = &(cs5535au->dmas[CS5535AUDIO_DMA_PLAYBACK]);
> if ((err = snd_pcm_hw_constraint_integer(runtime,
> @@ -343,7 +343,7 @@ static int snd_cs5535audio_capture_open(struct snd_pcm_substream *substream)
>
> runtime->hw = snd_cs5535audio_capture;
> runtime->hw.rates = cs5535au->ac97->rates[AC97_RATES_ADC];
> - snd_pcm_limit_hw_rates(runtime);
> + snd_pcm_limit_hw_rates(&runtime->hw);
> cs5535au->capture_substream = substream;
> runtime->private_data = &(cs5535au->dmas[CS5535AUDIO_DMA_CAPTURE]);
> if ((err = snd_pcm_hw_constraint_integer(runtime,
> diff --git a/sound/pci/hda/hda_controller.c b/sound/pci/hda/hda_controller.c
> index ba56b59b3e17..3728dbfae7b0 100644
> --- a/sound/pci/hda/hda_controller.c
> +++ b/sound/pci/hda/hda_controller.c
> @@ -605,7 +605,7 @@ static int azx_pcm_open(struct snd_pcm_substream *substream)
> runtime->hw.channels_max = hinfo->channels_max;
> runtime->hw.formats = hinfo->formats;
> runtime->hw.rates = hinfo->rates;
> - snd_pcm_limit_hw_rates(runtime);
> + snd_pcm_limit_hw_rates(&runtime->hw);
> snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS);
>
> /* avoid wrap-around with wall-clock */
> @@ -648,7 +648,7 @@ static int azx_pcm_open(struct snd_pcm_substream *substream)
> azx_release_device(azx_dev);
> goto powerdown;
> }
> - snd_pcm_limit_hw_rates(runtime);
> + snd_pcm_limit_hw_rates(&runtime->hw);
> /* sanity check */
> if (snd_BUG_ON(!runtime->hw.channels_min) ||
> snd_BUG_ON(!runtime->hw.channels_max) ||
> diff --git a/sound/pci/intel8x0.c b/sound/pci/intel8x0.c
> index 12374ba08ca2..7f85a30291a1 100644
> --- a/sound/pci/intel8x0.c
> +++ b/sound/pci/intel8x0.c
> @@ -1119,7 +1119,7 @@ static int snd_intel8x0_pcm_open(struct snd_pcm_substream *substream, struct ich
> ichdev->substream = substream;
> runtime->hw = snd_intel8x0_stream;
> runtime->hw.rates = ichdev->pcm->rates;
> - snd_pcm_limit_hw_rates(runtime);
> + snd_pcm_limit_hw_rates(&runtime->hw);
> if (chip->device_type == DEVICE_SIS) {
> runtime->hw.buffer_bytes_max = 64*1024;
> runtime->hw.period_bytes_max = 64*1024;
> diff --git a/sound/pci/sis7019.c b/sound/pci/sis7019.c
> index ef7dd290ae05..4d8e852d438f 100644
> --- a/sound/pci/sis7019.c
> +++ b/sound/pci/sis7019.c
> @@ -681,7 +681,7 @@ static int sis_capture_open(struct snd_pcm_substream *substream)
> runtime->private_data = voice;
> runtime->hw = sis_capture_hw_info;
> runtime->hw.rates = sis->ac97[0]->rates[AC97_RATES_ADC];
> - snd_pcm_limit_hw_rates(runtime);
> + snd_pcm_limit_hw_rates(&runtime->hw);
> snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_PERIOD_SIZE,
> 9, 0xfff9);
> snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_BUFFER_SIZE,
> diff --git a/sound/pci/via82xx.c b/sound/pci/via82xx.c
> index 30c817b6b635..8a55153a6ea3 100644
> --- a/sound/pci/via82xx.c
> +++ b/sound/pci/via82xx.c
> @@ -1180,7 +1180,7 @@ static int snd_via82xx_pcm_open(struct via82xx *chip, struct viadev *viadev,
> if (chip->spdif_on && viadev->reg_offset == 0x30) {
> /* DXS#3 and spdif is on */
> runtime->hw.rates = chip->ac97->rates[AC97_RATES_SPDIF];
> - snd_pcm_limit_hw_rates(runtime);
> + snd_pcm_limit_hw_rates(&runtime->hw);
> } else if (chip->dxs_fixed && viadev->reg_offset < 0x40) {
> /* fixed DXS playback rate */
> runtime->hw.rates = SNDRV_PCM_RATE_48000;
> @@ -1195,7 +1195,7 @@ static int snd_via82xx_pcm_open(struct via82xx *chip, struct viadev *viadev,
> } else if (! ratep->rate) {
> int idx = viadev->direction ? AC97_RATES_ADC : AC97_RATES_FRONT_DAC;
> runtime->hw.rates = chip->ac97->rates[idx];
> - snd_pcm_limit_hw_rates(runtime);
> + snd_pcm_limit_hw_rates(&runtime->hw);
> } else {
> /* a fixed rate */
> runtime->hw.rates = SNDRV_PCM_RATE_KNOT;
> diff --git a/sound/soc/soc-pcm.c b/sound/soc/soc-pcm.c
> index 01e7bc03d92f..bd7b3cfcfa62 100644
> --- a/sound/soc/soc-pcm.c
> +++ b/sound/soc/soc-pcm.c
> @@ -416,7 +416,7 @@ static void soc_pcm_init_runtime_hw(struct snd_pcm_substream *substream)
> hw->formats = formats & cpu_stream->formats;
> hw->rates = snd_pcm_rate_mask_intersect(rates, cpu_stream->rates);
>
> - snd_pcm_limit_hw_rates(runtime);
> + snd_pcm_limit_hw_rates(hw);
>
> hw->rate_min = max(hw->rate_min, cpu_stream->rate_min);
> hw->rate_min = max(hw->rate_min, rate_min);
> @@ -1951,7 +1951,7 @@ static int dpcm_fe_dai_startup(struct snd_pcm_substream *fe_substream)
> fe->dpcm[stream].state = SND_SOC_DPCM_STATE_OPEN;
>
> dpcm_set_fe_runtime(fe_substream);
> - snd_pcm_limit_hw_rates(runtime);
> + snd_pcm_limit_hw_rates(&runtime->hw);
>
> ret = dpcm_apply_symmetry(fe_substream, stream);
> if (ret < 0) {
> diff --git a/sound/usb/caiaq/audio.c b/sound/usb/caiaq/audio.c
> index 970eb0865ba3..242f50ebc63a 100644
> --- a/sound/usb/caiaq/audio.c
> +++ b/sound/usb/caiaq/audio.c
> @@ -145,7 +145,7 @@ static int snd_usb_caiaq_substream_open(struct snd_pcm_substream *substream)
>
> dev_dbg(dev, "%s(%p)\n", __func__, substream);
> substream->runtime->hw = cdev->pcm_info;
> - snd_pcm_limit_hw_rates(substream->runtime);
> + snd_pcm_limit_hw_rates(&substream->runtime->hw);
>
> return 0;
> }
> @@ -243,7 +243,7 @@ static int snd_usb_caiaq_pcm_prepare(struct snd_pcm_substream *substream)
> if (runtime->rate == rates[i])
> cdev->pcm_info.rates = 1 << i;
>
> - snd_pcm_limit_hw_rates(runtime);
> + snd_pcm_limit_hw_rates(&runtime->hw);
>
> bytes_per_sample = BYTES_PER_SAMPLE;
> if (cdev->spec.data_alignment >= 2)
> --
> 2.24.1
>

Next message: Paul E. McKenney: "Re: [PATCH v2 5/5] kcsan: Introduce ASSERT_EXCLUSIVE_BITS(var, mask)"
Previous message: Anson Huang: "[PATCH V2] ARM: imx: Add missing of_node_put()"
In reply to: Samuel Holland: "[PATCH 2/4] ALSA: pcm: Make snd_pcm_limit_hw_rates take hw directly"
Next in thread: Samuel Holland: "Re: [PATCH 2/4] ALSA: pcm: Make snd_pcm_limit_hw_rates take hw directly"
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