diff options
| author | Olivier Moysan <olivier.moysan@st.com> | 2020-03-18 15:41:24 +0100 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2020-03-18 19:55:25 +0000 |
| commit | 794df9448edb55978e50372f083aeedade1b2844 (patch) | |
| tree | ee3f039cc352725383faaa7cca0d6bb930a42b02 /sound/soc | |
| parent | eff4d9ecd05934ba95fca40952bd613d3e594d4e (diff) | |
ASoC: stm32: spdifrx: manage rebind issue
The commit e894efef9ac7 ("ASoC: core: add support to card rebind")
allows to rebind the sound card after a rebind of one of its component.
With this commit, the sound card is actually rebound,
but may be no more functional.
Corrections:
- Call snd_dmaengine_pcm_register() before snd_soc_register_component().
- Call snd_dmaengine_pcm_unregister() and snd_soc_unregister_component()
explicitly from SPDFIRX driver.
Signed-off-by: Olivier Moysan <olivier.moysan@st.com>
Link: https://lore.kernel.org/r/20200318144125.9163-3-olivier.moysan@st.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'sound/soc')
| -rw-r--r-- | sound/soc/stm/stm32_spdifrx.c | 62 |
1 files changed, 32 insertions, 30 deletions
diff --git a/sound/soc/stm/stm32_spdifrx.c b/sound/soc/stm/stm32_spdifrx.c index 49766afdae61..ae7a0f46a6fb 100644 --- a/sound/soc/stm/stm32_spdifrx.c +++ b/sound/soc/stm/stm32_spdifrx.c @@ -944,6 +944,22 @@ static int stm32_spdifrx_parse_of(struct platform_device *pdev, return 0; } +static int stm32_spdifrx_remove(struct platform_device *pdev) +{ + struct stm32_spdifrx_data *spdifrx = platform_get_drvdata(pdev); + + if (spdifrx->ctrl_chan) + dma_release_channel(spdifrx->ctrl_chan); + + if (spdifrx->dmab) + snd_dma_free_pages(spdifrx->dmab); + + snd_dmaengine_pcm_unregister(&pdev->dev); + snd_soc_unregister_component(&pdev->dev); + + return 0; +} + static int stm32_spdifrx_probe(struct platform_device *pdev) { struct stm32_spdifrx_data *spdifrx; @@ -995,25 +1011,27 @@ static int stm32_spdifrx_probe(struct platform_device *pdev) udelay(2); reset_control_deassert(rst); - ret = devm_snd_soc_register_component(&pdev->dev, - &stm32_spdifrx_component, - stm32_spdifrx_dai, - ARRAY_SIZE(stm32_spdifrx_dai)); - if (ret) - return ret; - - ret = stm32_spdifrx_dma_ctrl_register(&pdev->dev, spdifrx); - if (ret) - goto error; - pcm_config = &stm32_spdifrx_pcm_config; - ret = devm_snd_dmaengine_pcm_register(&pdev->dev, pcm_config, 0); + ret = snd_dmaengine_pcm_register(&pdev->dev, pcm_config, 0); if (ret) { if (ret != -EPROBE_DEFER) dev_err(&pdev->dev, "PCM DMA register error %d\n", ret); - goto error; + return ret; } + ret = snd_soc_register_component(&pdev->dev, + &stm32_spdifrx_component, + stm32_spdifrx_dai, + ARRAY_SIZE(stm32_spdifrx_dai)); + if (ret) { + snd_dmaengine_pcm_unregister(&pdev->dev); + return ret; + } + + ret = stm32_spdifrx_dma_ctrl_register(&pdev->dev, spdifrx); + if (ret) + goto error; + ret = regmap_read(spdifrx->regmap, STM32_SPDIFRX_IDR, &idr); if (ret) goto error; @@ -1029,27 +1047,11 @@ static int stm32_spdifrx_probe(struct platform_device *pdev) return ret; error: - if (!IS_ERR(spdifrx->ctrl_chan)) - dma_release_channel(spdifrx->ctrl_chan); - if (spdifrx->dmab) - snd_dma_free_pages(spdifrx->dmab); + stm32_spdifrx_remove(pdev); return ret; } -static int stm32_spdifrx_remove(struct platform_device *pdev) -{ - struct stm32_spdifrx_data *spdifrx = platform_get_drvdata(pdev); - - if (spdifrx->ctrl_chan) - dma_release_channel(spdifrx->ctrl_chan); - - if (spdifrx->dmab) - snd_dma_free_pages(spdifrx->dmab); - - return 0; -} - MODULE_DEVICE_TABLE(of, stm32_spdifrx_ids); #ifdef CONFIG_PM_SLEEP |