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 | 86 +++++++++++++++++++++++++++++++++++ 1 file changed, 86 insertions(+)
diff --git a/sound/soc/amd/ps/ps-sdw-dma.c b/sound/soc/amd/ps/ps-sdw-dma.c index 5002ef16d980..8901a52f7498 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 sdw_dma_stream_instance *sdw_ins, void __iomem *acp_base, u32 stream_id) { @@ -470,13 +494,75 @@ static int acp63_sdw_platform_probe(struct platform_device *pdev) dev_err(&pdev->dev, "Fail to register sdw dma component\n"); return -ENODEV; } + 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; +} + +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 sdw_dma_stream_instance *sdw_ins; + 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; + sdw_ins = runtime->private_data; + period_bytes = frames_to_bytes(runtime, runtime->period_size); + buf_size = frames_to_bytes(runtime, runtime->buffer_size); + acp63_config_dma(sdw_ins, 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; + sdw_ins = runtime->private_data; + period_bytes = frames_to_bytes(runtime, runtime->period_size); + buf_size = frames_to_bytes(runtime, runtime->buffer_size); + acp63_config_dma(sdw_ins, 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, }, };