diff options
| author | Jerome Brunet <jbrunet@baylibre.com> | 2021-04-07 16:59:14 +0200 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2021-04-07 16:58:31 +0100 |
| commit | 9be701ec3493d3348723a38f0c19702d710758ce (patch) | |
| tree | c6ad39f7ae4abd519f72eed9f3b7355746e67953 /sound | |
| parent | fa74c223b6fd78a5314b4c61b9abdbed3c2185b4 (diff) | |
| download | linux-9be701ec3493d3348723a38f0c19702d710758ce.tar.bz2 | |
ASoC: meson: axg-fifo: add NO_PERIOD_WAKEUP support
On the AXG family, the fifo irq is not necessary for the HW to operate.
It is just used to notify that a period has elapsed. If userpace does not
care for these wakeups (such as pipewire), we are just wasting CPU cycles.
Add support for NO_PERIOD_WAKEUP and disable irq when they are no needed.
Signed-off-by: Jerome Brunet <jbrunet@baylibre.com>
Link: https://lore.kernel.org/r/20210407145914.311479-1-jbrunet@baylibre.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'sound')
| -rw-r--r-- | sound/soc/meson/axg-fifo.c | 11 |
1 files changed, 6 insertions, 5 deletions
diff --git a/sound/soc/meson/axg-fifo.c b/sound/soc/meson/axg-fifo.c index b2e867113226..b9af2d513e09 100644 --- a/sound/soc/meson/axg-fifo.c +++ b/sound/soc/meson/axg-fifo.c @@ -27,8 +27,8 @@ static struct snd_pcm_hardware axg_fifo_hw = { SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_MMAP_VALID | SNDRV_PCM_INFO_BLOCK_TRANSFER | - SNDRV_PCM_INFO_PAUSE), - + SNDRV_PCM_INFO_PAUSE | + SNDRV_PCM_INFO_NO_PERIOD_WAKEUP), .formats = AXG_FIFO_FORMATS, .rate_min = 5512, .rate_max = 192000, @@ -113,7 +113,7 @@ int axg_fifo_pcm_hw_params(struct snd_soc_component *component, { struct snd_pcm_runtime *runtime = ss->runtime; struct axg_fifo *fifo = axg_fifo_data(ss); - unsigned int burst_num, period, threshold; + unsigned int burst_num, period, threshold, irq_en; dma_addr_t end_ptr; period = params_period_bytes(params); @@ -142,10 +142,11 @@ int axg_fifo_pcm_hw_params(struct snd_soc_component *component, regmap_field_write(fifo->field_threshold, threshold ? threshold - 1 : 0); - /* Enable block count irq */ + /* Enable irq if necessary */ + irq_en = runtime->no_period_wakeup ? 0 : FIFO_INT_COUNT_REPEAT; regmap_update_bits(fifo->map, FIFO_CTRL0, CTRL0_INT_EN(FIFO_INT_COUNT_REPEAT), - CTRL0_INT_EN(FIFO_INT_COUNT_REPEAT)); + CTRL0_INT_EN(irq_en)); return 0; } |