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path: root/sound/soc/fsl/fsl_sai.c
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Diffstat (limited to 'sound/soc/fsl/fsl_sai.c')
-rw-r--r--sound/soc/fsl/fsl_sai.c62
1 files changed, 44 insertions, 18 deletions
diff --git a/sound/soc/fsl/fsl_sai.c b/sound/soc/fsl/fsl_sai.c
index 5e65b456d3e2..407a45e48eee 100644
--- a/sound/soc/fsl/fsl_sai.c
+++ b/sound/soc/fsl/fsl_sai.c
@@ -10,6 +10,7 @@
#include <linux/module.h>
#include <linux/of_address.h>
#include <linux/of_device.h>
+#include <linux/pm_qos.h>
#include <linux/pm_runtime.h>
#include <linux/regmap.h>
#include <linux/slab.h>
@@ -727,8 +728,6 @@ static int fsl_sai_dai_probe(struct snd_soc_dai *cpu_dai)
snd_soc_dai_init_dma_data(cpu_dai, &sai->dma_params_tx,
&sai->dma_params_rx);
- snd_soc_dai_set_drvdata(cpu_dai, sai);
-
return 0;
}
@@ -995,6 +994,9 @@ static int fsl_sai_check_version(struct device *dev)
return 0;
}
+static int fsl_sai_runtime_suspend(struct device *dev);
+static int fsl_sai_runtime_resume(struct device *dev);
+
static int fsl_sai_probe(struct platform_device *pdev)
{
struct device_node *np = pdev->dev.of_node;
@@ -1027,24 +1029,21 @@ static int fsl_sai_probe(struct platform_device *pdev)
ARRAY_SIZE(fsl_sai_reg_defaults_ofs8);
}
- sai->regmap = devm_regmap_init_mmio_clk(&pdev->dev,
- "bus", base, &fsl_sai_regmap_config);
-
- /* Compatible with old DTB cases */
- if (IS_ERR(sai->regmap) && PTR_ERR(sai->regmap) != -EPROBE_DEFER)
- sai->regmap = devm_regmap_init_mmio_clk(&pdev->dev,
- "sai", base, &fsl_sai_regmap_config);
+ sai->regmap = devm_regmap_init_mmio(&pdev->dev, base, &fsl_sai_regmap_config);
if (IS_ERR(sai->regmap)) {
dev_err(&pdev->dev, "regmap init failed\n");
return PTR_ERR(sai->regmap);
}
- /* No error out for old DTB cases but only mark the clock NULL */
sai->bus_clk = devm_clk_get(&pdev->dev, "bus");
+ /* Compatible with old DTB cases */
+ if (IS_ERR(sai->bus_clk) && PTR_ERR(sai->bus_clk) != -EPROBE_DEFER)
+ sai->bus_clk = devm_clk_get(&pdev->dev, "sai");
if (IS_ERR(sai->bus_clk)) {
dev_err(&pdev->dev, "failed to get bus clock: %ld\n",
PTR_ERR(sai->bus_clk));
- sai->bus_clk = NULL;
+ /* -EPROBE_DEFER */
+ return PTR_ERR(sai->bus_clk);
}
for (i = 1; i < FSL_SAI_MCLK_MAX; i++) {
@@ -1125,6 +1124,18 @@ static int fsl_sai_probe(struct platform_device *pdev)
sai->dma_params_tx.maxburst = FSL_SAI_MAXBURST_TX;
platform_set_drvdata(pdev, sai);
+ pm_runtime_enable(&pdev->dev);
+ if (!pm_runtime_enabled(&pdev->dev)) {
+ ret = fsl_sai_runtime_resume(&pdev->dev);
+ if (ret)
+ goto err_pm_disable;
+ }
+
+ ret = pm_runtime_get_sync(&pdev->dev);
+ if (ret < 0) {
+ pm_runtime_put_noidle(&pdev->dev);
+ goto err_pm_get_sync;
+ }
/* Get sai version */
ret = fsl_sai_check_version(&pdev->dev);
@@ -1138,26 +1149,30 @@ static int fsl_sai_probe(struct platform_device *pdev)
FSL_SAI_MCTL_MCLK_EN, FSL_SAI_MCTL_MCLK_EN);
}
- pm_runtime_enable(&pdev->dev);
- regcache_cache_only(sai->regmap, true);
+ ret = pm_runtime_put_sync(&pdev->dev);
+ if (ret < 0)
+ goto err_pm_get_sync;
ret = devm_snd_soc_register_component(&pdev->dev, &fsl_component,
&sai->cpu_dai_drv, 1);
if (ret)
- goto err_pm_disable;
+ goto err_pm_get_sync;
if (sai->soc_data->use_imx_pcm) {
ret = imx_pcm_dma_init(pdev, IMX_SAI_DMABUF_SIZE);
if (ret)
- goto err_pm_disable;
+ goto err_pm_get_sync;
} else {
ret = devm_snd_dmaengine_pcm_register(&pdev->dev, NULL, 0);
if (ret)
- goto err_pm_disable;
+ goto err_pm_get_sync;
}
return ret;
+err_pm_get_sync:
+ if (!pm_runtime_status_suspended(&pdev->dev))
+ fsl_sai_runtime_suspend(&pdev->dev);
err_pm_disable:
pm_runtime_disable(&pdev->dev);
@@ -1167,6 +1182,8 @@ err_pm_disable:
static int fsl_sai_remove(struct platform_device *pdev)
{
pm_runtime_disable(&pdev->dev);
+ if (!pm_runtime_status_suspended(&pdev->dev))
+ fsl_sai_runtime_suspend(&pdev->dev);
return 0;
}
@@ -1177,6 +1194,7 @@ static const struct fsl_sai_soc_data fsl_sai_vf610_data = {
.fifo_depth = 32,
.reg_offset = 0,
.mclk0_is_mclk1 = false,
+ .flags = 0,
};
static const struct fsl_sai_soc_data fsl_sai_imx6sx_data = {
@@ -1185,6 +1203,7 @@ static const struct fsl_sai_soc_data fsl_sai_imx6sx_data = {
.fifo_depth = 32,
.reg_offset = 0,
.mclk0_is_mclk1 = true,
+ .flags = 0,
};
static const struct fsl_sai_soc_data fsl_sai_imx7ulp_data = {
@@ -1193,6 +1212,7 @@ static const struct fsl_sai_soc_data fsl_sai_imx7ulp_data = {
.fifo_depth = 16,
.reg_offset = 8,
.mclk0_is_mclk1 = false,
+ .flags = PMQOS_CPU_LATENCY,
};
static const struct fsl_sai_soc_data fsl_sai_imx8mq_data = {
@@ -1201,6 +1221,7 @@ static const struct fsl_sai_soc_data fsl_sai_imx8mq_data = {
.fifo_depth = 128,
.reg_offset = 8,
.mclk0_is_mclk1 = false,
+ .flags = 0,
};
static const struct fsl_sai_soc_data fsl_sai_imx8qm_data = {
@@ -1209,6 +1230,7 @@ static const struct fsl_sai_soc_data fsl_sai_imx8qm_data = {
.fifo_depth = 64,
.reg_offset = 0,
.mclk0_is_mclk1 = false,
+ .flags = 0,
};
static const struct of_device_id fsl_sai_ids[] = {
@@ -1222,7 +1244,6 @@ static const struct of_device_id fsl_sai_ids[] = {
};
MODULE_DEVICE_TABLE(of, fsl_sai_ids);
-#ifdef CONFIG_PM
static int fsl_sai_runtime_suspend(struct device *dev)
{
struct fsl_sai *sai = dev_get_drvdata(dev);
@@ -1235,6 +1256,9 @@ static int fsl_sai_runtime_suspend(struct device *dev)
clk_disable_unprepare(sai->bus_clk);
+ if (sai->soc_data->flags & PMQOS_CPU_LATENCY)
+ cpu_latency_qos_remove_request(&sai->pm_qos_req);
+
regcache_cache_only(sai->regmap, true);
return 0;
@@ -1264,6 +1288,9 @@ static int fsl_sai_runtime_resume(struct device *dev)
goto disable_tx_clk;
}
+ if (sai->soc_data->flags & PMQOS_CPU_LATENCY)
+ cpu_latency_qos_add_request(&sai->pm_qos_req, 0);
+
regcache_cache_only(sai->regmap, false);
regcache_mark_dirty(sai->regmap);
regmap_write(sai->regmap, FSL_SAI_TCSR(ofs), FSL_SAI_CSR_SR);
@@ -1289,7 +1316,6 @@ disable_bus_clk:
return ret;
}
-#endif /* CONFIG_PM */
static const struct dev_pm_ops fsl_sai_pm_ops = {
SET_RUNTIME_PM_OPS(fsl_sai_runtime_suspend,
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-11 09:34:32 +0000