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ASoC: amd: ps: add pm ops support for SoundWire dma driver

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Add support pm ops support for SoundWire dma driver.

Signed-off-by: Vijendar Mukunda <Vijendar.Mukunda@amd.com>
Link: https://lore.kernel.org/r/20230612095903.2113464-7-Vijendar.Mukunda@amd.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Vijendar Mukunda
2023-06-12 15:29:00 +05:30
committed by Mark Brown
parent 298d4f7b17
commit 5a06c3ac4c
1 changed files with 97 additions and 3 deletions
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100
sound/soc/amd/ps/ps-sdw-dma.c
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@@ -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)
{
@@ -440,16 +464,86 @@ 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;
return status;
}
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);
return 0;
}
static int acp63_sdw_platform_remove(struct platform_device *pdev)
{
pm_runtime_disable(&pdev->dev);
return 0;
}
static int acp_restore_sdw_dma_config(struct sdw_dma_dev_data *sdw_data)
{
struct acp_sdw_dma_stream *stream;
struct snd_pcm_substream *substream;
struct snd_pcm_runtime *runtime;
u32 period_bytes, buf_size, water_mark_size_reg;
u32 stream_count;
int index, instance, ret;
for (instance = 0; instance < AMD_SDW_MAX_MANAGERS; instance++) {
if (instance == ACP_SDW0)
stream_count = ACP63_SDW0_DMA_MAX_STREAMS;
else
stream_count = ACP63_SDW1_DMA_MAX_STREAMS;
for (index = 0; index < stream_count; index++) {
if (instance == ACP_SDW0) {
substream = sdw_data->sdw0_dma_stream[index];
water_mark_size_reg =
sdw0_dma_ring_buf_reg[index].water_mark_size_reg;
} else {
substream = sdw_data->sdw1_dma_stream[index];
water_mark_size_reg =
sdw1_dma_ring_buf_reg[index].water_mark_size_reg;
}
if (substream && substream->runtime) {
runtime = substream->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, instance);
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 int __maybe_unused acp63_sdw_pcm_resume(struct device *dev)
{
struct sdw_dma_dev_data *sdw_data;
sdw_data = dev_get_drvdata(dev);
return acp_restore_sdw_dma_config(sdw_data);
}
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,
},
};