| Message ID | 20230522133122.166841-7-Vijendar.Mukunda@amd.com |
|---|---|
| State | New |
| Headers | show |
| Series | ASoC: amd: ps: add SoundWire support | expand |
On 22/05/23 23:50, Pierre-Louis Bossart wrote: >> @@ -464,16 +488,79 @@ static int acp63_sdw_platform_probe(struct platform_device *pdev) >> status = devm_snd_soc_register_component(&pdev->dev, >> &acp63_sdw_component, >> NULL, 0); >> - if (status) >> + if (status) { >> dev_err(&pdev->dev, "Fail to register sdw dma component\n"); >> + return status; >> + } >> + pm_runtime_set_autosuspend_delay(&pdev->dev, ACP_SUSPEND_DELAY_MS); >> + pm_runtime_use_autosuspend(&pdev->dev); >> + pm_runtime_enable(&pdev->dev); >> + pm_runtime_allow(&pdev->dev); > Can you remind me why you need the pm_runtime_allow()? I can't recall > where the _forbid() is done. We have used pm_runtime_allow() to allow the device immediately enter runtime suspend state. Yes you are correct. If we use pm_runtime_allow(), then in remove sequence we should use pm_runtime_forbid call. > Also is there not a pm_runtime_set_active() missing? We will change the sequence as mentioned below. in probe sequence , we will use pm_runtime_set_autosuspend_delay(&pdev->dev, ACP_SUSPEND_DELAY_MS); pm_runtime_use_autosuspend(&pdev->dev); pm_runtime_mark_last_busy(&pdev->dev); pm_runtime_set_active(&pdev->dev); pm_runtime_enable(&pdev->dev); In remove sequence pm_runtime_disable(&pdev->dev); > >> + return 0; >> +} >> >> - return status; >> +static int acp63_sdw_platform_remove(struct platform_device *pdev) >> +{ >> + pm_runtime_disable(&pdev->dev); >> + return 0; >> } >> >> +static int __maybe_unused acp63_sdw_pcm_resume(struct device *dev) >> +{ >> + struct sdw_dma_dev_data *sdw_data; >> + struct acp_sdw_dma_stream *stream; >> + struct snd_pcm_runtime *runtime; >> + u32 period_bytes, buf_size, water_mark_size_reg; >> + int ret; >> + int index; >> + >> + sdw_data = dev_get_drvdata(dev); >> + for (index = 0; index < ACP63_SDW0_DMA_MAX_STREAMS; index++) { >> + if (sdw_data->sdw0_dma_stream[index] && >> + sdw_data->sdw0_dma_stream[index]->runtime) { >> + water_mark_size_reg = sdw0_dma_ring_buf_reg[index].water_mark_size_reg; >> + runtime = sdw_data->sdw0_dma_stream[index]->runtime; >> + stream = runtime->private_data; >> + period_bytes = frames_to_bytes(runtime, runtime->period_size); >> + buf_size = frames_to_bytes(runtime, runtime->buffer_size); >> + acp63_config_dma(stream, sdw_data->acp_base, index); >> + ret = acp63_configure_sdw_ringbuffer(sdw_data->acp_base, index, >> + buf_size, ACP_SDW0); >> + if (ret) >> + return ret; >> + writel(period_bytes, sdw_data->acp_base + water_mark_size_reg); >> + } >> + } >> + for (index = 0; index < ACP63_SDW1_DMA_MAX_STREAMS; index++) { >> + if (sdw_data->sdw1_dma_stream[index] && >> + sdw_data->sdw1_dma_stream[index]->runtime) { >> + water_mark_size_reg = sdw1_dma_ring_buf_reg[index].water_mark_size_reg; >> + runtime = sdw_data->sdw1_dma_stream[index]->runtime; >> + stream = runtime->private_data; >> + period_bytes = frames_to_bytes(runtime, runtime->period_size); >> + buf_size = frames_to_bytes(runtime, runtime->buffer_size); >> + acp63_config_dma(stream, sdw_data->acp_base, index); >> + ret = acp63_configure_sdw_ringbuffer(sdw_data->acp_base, index, >> + buf_size, ACP_SDW1); >> + if (ret) >> + return ret; >> + writel(period_bytes, sdw_data->acp_base + water_mark_size_reg); >> + } >> + } > Isn't this set of configurations something that needs to be done already > somewhere else, i.e. could there be a common helper? In hw_params() callback, we are setting period_bytes and buf_size from params structure. We are extracting same variables from runtime structures in resume() callback. We can implement a helper function to further simplify above logic instead of having two separate loops. > >> + acp63_enable_disable_sdw_dma_interrupts(sdw_data->acp_base, true); >> + return 0; >> +} >> + >> +static const struct dev_pm_ops acp63_pm_ops = { >> + SET_SYSTEM_SLEEP_PM_OPS(NULL, acp63_sdw_pcm_resume) >> +}; >> + >> static struct platform_driver acp63_sdw_dma_driver = { >> .probe = acp63_sdw_platform_probe, >> + .remove = acp63_sdw_platform_remove, >> .driver = { >> .name = "amd_ps_sdw_dma", >> + .pm = &acp63_pm_ops, >> }, >> }; >>
diff --git a/sound/soc/amd/ps/ps-sdw-dma.c b/sound/soc/amd/ps/ps-sdw-dma.c index be68003cbd67..54cf971589c0 100644 --- a/sound/soc/amd/ps/ps-sdw-dma.c +++ b/sound/soc/amd/ps/ps-sdw-dma.c @@ -12,6 +12,7 @@ #include <sound/pcm_params.h> #include <sound/soc.h> #include <sound/soc-dai.h> +#include <linux/pm_runtime.h> #include <linux/soundwire/sdw_amd.h> #include "acp63.h" @@ -102,6 +103,29 @@ static const struct snd_pcm_hardware acp63_sdw_hardware_capture = { .periods_max = SDW_CAPTURE_MAX_NUM_PERIODS, }; +static void acp63_enable_disable_sdw_dma_interrupts(void __iomem *acp_base, bool enable) +{ + u32 ext_intr_cntl, ext_intr_cntl1; + u32 irq_mask = ACP_SDW_DMA_IRQ_MASK; + u32 irq_mask1 = ACP_P1_SDW_DMA_IRQ_MASK; + + if (enable) { + ext_intr_cntl = readl(acp_base + ACP_EXTERNAL_INTR_CNTL); + ext_intr_cntl |= irq_mask; + writel(ext_intr_cntl, acp_base + ACP_EXTERNAL_INTR_CNTL); + ext_intr_cntl1 = readl(acp_base + ACP_EXTERNAL_INTR_CNTL1); + ext_intr_cntl1 |= irq_mask1; + writel(ext_intr_cntl1, acp_base + ACP_EXTERNAL_INTR_CNTL1); + } else { + ext_intr_cntl = readl(acp_base + ACP_EXTERNAL_INTR_CNTL); + ext_intr_cntl &= ~irq_mask; + writel(ext_intr_cntl, acp_base + ACP_EXTERNAL_INTR_CNTL); + ext_intr_cntl1 = readl(acp_base + ACP_EXTERNAL_INTR_CNTL1); + ext_intr_cntl1 &= ~irq_mask1; + writel(ext_intr_cntl1, acp_base + ACP_EXTERNAL_INTR_CNTL1); + } +} + static void acp63_config_dma(struct acp_sdw_dma_stream *stream, void __iomem *acp_base, u32 stream_id) { @@ -464,16 +488,79 @@ static int acp63_sdw_platform_probe(struct platform_device *pdev) status = devm_snd_soc_register_component(&pdev->dev, &acp63_sdw_component, NULL, 0); - if (status) + if (status) { dev_err(&pdev->dev, "Fail to register sdw dma component\n"); + return status; + } + pm_runtime_set_autosuspend_delay(&pdev->dev, ACP_SUSPEND_DELAY_MS); + pm_runtime_use_autosuspend(&pdev->dev); + pm_runtime_enable(&pdev->dev); + pm_runtime_allow(&pdev->dev); + return 0; +} - return status; +static int acp63_sdw_platform_remove(struct platform_device *pdev) +{ + pm_runtime_disable(&pdev->dev); + return 0; } +static int __maybe_unused acp63_sdw_pcm_resume(struct device *dev) +{ + struct sdw_dma_dev_data *sdw_data; + struct acp_sdw_dma_stream *stream; + struct snd_pcm_runtime *runtime; + u32 period_bytes, buf_size, water_mark_size_reg; + int ret; + int index; + + sdw_data = dev_get_drvdata(dev); + for (index = 0; index < ACP63_SDW0_DMA_MAX_STREAMS; index++) { + if (sdw_data->sdw0_dma_stream[index] && + sdw_data->sdw0_dma_stream[index]->runtime) { + water_mark_size_reg = sdw0_dma_ring_buf_reg[index].water_mark_size_reg; + runtime = sdw_data->sdw0_dma_stream[index]->runtime; + stream = runtime->private_data; + period_bytes = frames_to_bytes(runtime, runtime->period_size); + buf_size = frames_to_bytes(runtime, runtime->buffer_size); + acp63_config_dma(stream, sdw_data->acp_base, index); + ret = acp63_configure_sdw_ringbuffer(sdw_data->acp_base, index, + buf_size, ACP_SDW0); + if (ret) + return ret; + writel(period_bytes, sdw_data->acp_base + water_mark_size_reg); + } + } + for (index = 0; index < ACP63_SDW1_DMA_MAX_STREAMS; index++) { + if (sdw_data->sdw1_dma_stream[index] && + sdw_data->sdw1_dma_stream[index]->runtime) { + water_mark_size_reg = sdw1_dma_ring_buf_reg[index].water_mark_size_reg; + runtime = sdw_data->sdw1_dma_stream[index]->runtime; + stream = runtime->private_data; + period_bytes = frames_to_bytes(runtime, runtime->period_size); + buf_size = frames_to_bytes(runtime, runtime->buffer_size); + acp63_config_dma(stream, sdw_data->acp_base, index); + ret = acp63_configure_sdw_ringbuffer(sdw_data->acp_base, index, + buf_size, ACP_SDW1); + if (ret) + return ret; + writel(period_bytes, sdw_data->acp_base + water_mark_size_reg); + } + } + acp63_enable_disable_sdw_dma_interrupts(sdw_data->acp_base, true); + return 0; +} + +static const struct dev_pm_ops acp63_pm_ops = { + SET_SYSTEM_SLEEP_PM_OPS(NULL, acp63_sdw_pcm_resume) +}; + static struct platform_driver acp63_sdw_dma_driver = { .probe = acp63_sdw_platform_probe, + .remove = acp63_sdw_platform_remove, .driver = { .name = "amd_ps_sdw_dma", + .pm = &acp63_pm_ops, }, };
Add support pm ops support for SoundWire dma driver. Signed-off-by: Vijendar Mukunda <Vijendar.Mukunda@amd.com> --- sound/soc/amd/ps/ps-sdw-dma.c | 91 ++++++++++++++++++++++++++++++++++- 1 file changed, 89 insertions(+), 2 deletions(-)