[alsa-devel] [PATCH v2 6/7] ASoC: amd: ACP powergating to be done by controller
Ravulapati Vishnu vardhan rao
Vishnuvardhanrao.Ravulapati at amd.com
Thu Nov 7 15:36:03 CET 2019
ACP power gating should be done by ACP-PCI.previous it was
handled in DMA driver which is not authorised to do.Moving
it to ACP-PCI.
Signed-off-by: Ravulapati Vishnu vardhan rao <Vishnuvardhanrao.Ravulapati at amd.com>
---
sound/soc/amd/raven/acp3x-pcm-dma.c | 141 +-----------------------------------
sound/soc/amd/raven/acp3x.h | 7 ++
sound/soc/amd/raven/pci-acp3x.c | 130 ++++++++++++++++++++++++++++++++-
3 files changed, 138 insertions(+), 140 deletions(-)
diff --git a/sound/soc/amd/raven/acp3x-pcm-dma.c b/sound/soc/amd/raven/acp3x-pcm-dma.c
index 689e234..f77f5bc 100644
--- a/sound/soc/amd/raven/acp3x-pcm-dma.c
+++ b/sound/soc/amd/raven/acp3x-pcm-dma.c
@@ -58,106 +58,6 @@ static const struct snd_pcm_hardware acp3x_pcm_hardware_capture = {
.periods_max = CAPTURE_MAX_NUM_PERIODS,
};
-static int acp3x_power_on(void __iomem *acp3x_base, bool on)
-{
- u16 val, mask;
- u32 timeout;
-
- if (on == true) {
- val = 1;
- mask = ACP3x_POWER_ON;
- } else {
- val = 0;
- mask = ACP3x_POWER_OFF;
- }
-
- rv_writel(val, acp3x_base + mmACP_PGFSM_CONTROL);
- timeout = 0;
- while (true) {
- val = rv_readl(acp3x_base + mmACP_PGFSM_STATUS);
- if ((val & ACP3x_POWER_OFF_IN_PROGRESS) == mask)
- break;
- if (timeout > 100) {
- pr_err("ACP3x power state change failure\n");
- return -ENODEV;
- }
- timeout++;
- cpu_relax();
- }
- return 0;
-}
-
-static int acp3x_reset(void __iomem *acp3x_base)
-{
- u32 val, timeout;
-
- rv_writel(1, acp3x_base + mmACP_SOFT_RESET);
- timeout = 0;
- while (true) {
- val = rv_readl(acp3x_base + mmACP_SOFT_RESET);
- if ((val & ACP3x_SOFT_RESET__SoftResetAudDone_MASK) ||
- timeout > 100) {
- if (val & ACP3x_SOFT_RESET__SoftResetAudDone_MASK)
- break;
- return -ENODEV;
- }
- timeout++;
- cpu_relax();
- }
-
- rv_writel(0, acp3x_base + mmACP_SOFT_RESET);
- timeout = 0;
- while (true) {
- val = rv_readl(acp3x_base + mmACP_SOFT_RESET);
- if (!val || timeout > 100) {
- if (!val)
- break;
- return -ENODEV;
- }
- timeout++;
- cpu_relax();
- }
- return 0;
-}
-
-static int acp3x_init(void __iomem *acp3x_base)
-{
- int ret;
-
- /* power on */
- ret = acp3x_power_on(acp3x_base, true);
- if (ret) {
- pr_err("ACP3x power on failed\n");
- return ret;
- }
- /* Reset */
- ret = acp3x_reset(acp3x_base);
- if (ret) {
- pr_err("ACP3x reset failed\n");
- return ret;
- }
- return 0;
-}
-
-static int acp3x_deinit(void __iomem *acp3x_base)
-{
- int ret;
-
- /* Reset */
- ret = acp3x_reset(acp3x_base);
- if (ret) {
- pr_err("ACP3x reset failed\n");
- return ret;
- }
- /* power off */
- ret = acp3x_power_on(acp3x_base, false);
- if (ret) {
- pr_err("ACP3x power off failed\n");
- return ret;
- }
- return 0;
-}
-
static irqreturn_t i2s_irq_handler(int irq, void *dev_id)
{
u16 play_flag, cap_flag;
@@ -555,63 +455,37 @@ static int acp3x_audio_probe(struct platform_device *pdev)
adata->i2ssp_capture_stream = NULL;
dev_set_drvdata(&pdev->dev, adata);
- /* Initialize ACP */
- status = acp3x_init(adata->acp3x_base);
- if (status)
- return -ENODEV;
status = devm_snd_soc_register_component(&pdev->dev,
&acp3x_i2s_component,
NULL, 0);
if (status) {
dev_err(&pdev->dev, "Fail to register acp i2s component\n");
- goto dev_err;
+ return -ENODEV;
}
status = devm_request_irq(&pdev->dev, adata->i2s_irq, i2s_irq_handler,
irqflags, "ACP3x_I2S_IRQ", adata);
if (status) {
dev_err(&pdev->dev, "ACP3x I2S IRQ request failed\n");
- goto dev_err;
+ return -ENODEV;
}
pm_runtime_set_autosuspend_delay(&pdev->dev, 10000);
pm_runtime_use_autosuspend(&pdev->dev);
pm_runtime_enable(&pdev->dev);
return 0;
-dev_err:
- status = acp3x_deinit(adata->acp3x_base);
- if (status)
- dev_err(&pdev->dev, "ACP de-init failed\n");
- else
- dev_info(&pdev->dev, "ACP de-initialized\n");
- /*ignore device status and return driver probe error*/
- return -ENODEV;
}
static int acp3x_audio_remove(struct platform_device *pdev)
{
- int ret;
- struct i2s_dev_data *adata = dev_get_drvdata(&pdev->dev);
-
- ret = acp3x_deinit(adata->acp3x_base);
- if (ret)
- dev_err(&pdev->dev, "ACP de-init failed\n");
- else
- dev_info(&pdev->dev, "ACP de-initialized\n");
-
pm_runtime_disable(&pdev->dev);
return 0;
}
static int acp3x_resume(struct device *dev)
{
- int status;
u32 val;
struct i2s_dev_data *adata = dev_get_drvdata(dev);
- status = acp3x_init(adata->acp3x_base);
- if (status)
- return -ENODEV;
-
if (adata->play_stream && adata->play_stream->runtime) {
struct i2s_stream_instance *rtd =
adata->play_stream->runtime->private_data;
@@ -656,15 +530,8 @@ static int acp3x_resume(struct device *dev)
static int acp3x_pcm_runtime_suspend(struct device *dev)
{
- int status;
struct i2s_dev_data *adata = dev_get_drvdata(dev);
- status = acp3x_deinit(adata->acp3x_base);
- if (status)
- dev_err(dev, "ACP de-init failed\n");
- else
- dev_info(dev, "ACP de-initialized\n");
-
rv_writel(0, adata->acp3x_base + mmACP_EXTERNAL_INTR_ENB);
return 0;
@@ -672,12 +539,8 @@ static int acp3x_pcm_runtime_suspend(struct device *dev)
static int acp3x_pcm_runtime_resume(struct device *dev)
{
- int status;
struct i2s_dev_data *adata = dev_get_drvdata(dev);
- status = acp3x_init(adata->acp3x_base);
- if (status)
- return -ENODEV;
rv_writel(1, adata->acp3x_base + mmACP_EXTERNAL_INTR_ENB);
return 0;
}
diff --git a/sound/soc/amd/raven/acp3x.h b/sound/soc/amd/raven/acp3x.h
index 01b283a..cf16ceb 100644
--- a/sound/soc/amd/raven/acp3x.h
+++ b/sound/soc/amd/raven/acp3x.h
@@ -65,6 +65,13 @@
#define SLOT_WIDTH_16 0x10
#define SLOT_WIDTH_24 0x18
#define SLOT_WIDTH_32 0x20
+#define ACP_PGFSM_CNTL_POWER_ON_MASK 0x01
+#define ACP_PGFSM_CNTL_POWER_OFF_MASK 0x00
+#define ACP_PGFSM_STATUS_MASK 0x03
+#define ACP_POWERED_ON 0x00
+#define ACP_POWER_ON_IN_PROGRESS 0x01
+#define ACP_POWERED_OFF 0x02
+#define ACP_POWER_OFF_IN_PROGRESS 0x03
struct acp3x_platform_info {
u16 play_i2s_instance;
diff --git a/sound/soc/amd/raven/pci-acp3x.c b/sound/soc/amd/raven/pci-acp3x.c
index ec3ef625..7727c9d 100644
--- a/sound/soc/amd/raven/pci-acp3x.c
+++ b/sound/soc/amd/raven/pci-acp3x.c
@@ -19,6 +19,120 @@ struct acp3x_dev_data {
struct platform_device *pdev[ACP3x_DEVS];
};
+static int acp3x_power_on(void __iomem *acp3x_base)
+{
+ u32 val;
+ u32 timeout = 0;
+ int ret = 0;
+
+ val = rv_readl(acp3x_base + mmACP_PGFSM_STATUS);
+
+ if (val == 0)
+ return val;
+
+ if (!((val & ACP_PGFSM_STATUS_MASK) ==
+ ACP_POWER_ON_IN_PROGRESS))
+ rv_writel(ACP_PGFSM_CNTL_POWER_ON_MASK,
+ acp3x_base + mmACP_PGFSM_CONTROL);
+ while (++timeout < 500) {
+ val = rv_readl(acp3x_base + mmACP_PGFSM_STATUS);
+ if (!val)
+ break;
+ udelay(1);
+ if (timeout > 500) {
+ pr_err("ACP is Not Powered ON\n");
+ return -ETIMEDOUT;
+ }
+ }
+}
+
+static int acp3x_power_off(void __iomem *acp3x_base)
+{
+ u32 val;
+ u32 timeout = 0;
+
+ rv_writel(ACP_PGFSM_CNTL_POWER_OFF_MASK,
+ acp3x_base + mmACP_PGFSM_CONTROL);
+ while (++timeout < 500) {
+ val = rv_readl(acp3x_base + mmACP_PGFSM_STATUS);
+ if ((val & ACP_PGFSM_STATUS_MASK) == ACP_POWERED_OFF)
+ return 0;
+ udelay(1);
+ if (timeout > 500) {
+ pr_err("ACP is Not Powered OFF\n");
+ return -ETIMEDOUT;
+ }
+ }
+}
+
+
+static int acp3x_reset(void __iomem *acp3x_base)
+{
+ u32 val, timeout;
+
+ rv_writel(1, acp3x_base + mmACP_SOFT_RESET);
+ timeout = 0;
+ while (++timeout < 100) {
+ val = rv_readl(acp3x_base + mmACP_SOFT_RESET);
+ if ((val & ACP3x_SOFT_RESET__SoftResetAudDone_MASK) ||
+ timeout > 100) {
+ if (val & ACP3x_SOFT_RESET__SoftResetAudDone_MASK)
+ break;
+ return -ENODEV;
+ }
+ cpu_relax();
+ }
+ rv_writel(0, acp3x_base + mmACP_SOFT_RESET);
+ timeout = 0;
+ while (++timeout < 100) {
+ val = rv_readl(acp3x_base + mmACP_SOFT_RESET);
+ if (!val)
+ break;
+ if (timeout > 100)
+ return -ENODEV;
+ cpu_relax();
+ }
+ return 0;
+}
+
+static int acp3x_init(void __iomem *acp3x_base)
+{
+ int ret;
+
+ /* power on */
+ ret = acp3x_power_on(acp3x_base);
+ if (ret) {
+ pr_err("ACP3x power on failed\n");
+ return ret;
+ }
+ /* Reset */
+ ret = acp3x_reset(acp3x_base);
+ if (ret) {
+ pr_err("ACP3x reset failed\n");
+ return ret;
+ }
+ return 0;
+}
+
+static int acp3x_deinit(void __iomem *acp3x_base)
+{
+ int ret;
+
+ /* Reset */
+ ret = acp3x_reset(acp3x_base);
+ if (ret) {
+ pr_err("ACP3x reset failed\n");
+ return ret;
+ }
+ /* power off */
+ ret = acp3x_power_off(acp3x_base);
+ if (ret) {
+ pr_err("ACP3x power off failed\n");
+ return ret;
+ }
+ return 0;
+}
+
static int snd_acp3x_probe(struct pci_dev *pci,
const struct pci_device_id *pci_id)
{
@@ -63,6 +177,10 @@ static int snd_acp3x_probe(struct pci_dev *pci,
}
pci_set_master(pci);
pci_set_drvdata(pci, adata);
+ ret = acp3x_init(adata->acp3x_base);
+ if (ret)
+ return -ENODEV;
+
val = rv_readl(adata->acp3x_base + mmACP_I2S_PIN_CONFIG);
switch (val) {
@@ -132,6 +250,11 @@ static int snd_acp3x_probe(struct pci_dev *pci,
return 0;
unmap_mmio:
+ ret = acp3x_deinit(adata->acp3x_base);
+ if (ret)
+ dev_err(&pci->dev, "ACP de-init failed\n");
+ else
+ dev_info(&pci->dev, "ACP de-initialized\n");
pci_disable_msi(pci);
for (i = 0 ; i < ACP3x_DEVS ; i++)
platform_device_unregister(adata->pdev[i]);
@@ -147,13 +270,18 @@ static int snd_acp3x_probe(struct pci_dev *pci,
static void snd_acp3x_remove(struct pci_dev *pci)
{
- int i;
+ int i, ret;
struct acp3x_dev_data *adata = pci_get_drvdata(pci);
if (adata->acp3x_audio_mode == ACP3x_I2S_MODE) {
for (i = 0 ; i < ACP3x_DEVS ; i++)
platform_device_unregister(adata->pdev[i]);
}
+ ret = acp3x_deinit(adata->acp3x_base);
+ if (ret)
+ dev_err(&pci->dev, "ACP de-init failed\n");
+ else
+ dev_info(&pci->dev, "ACP de-initialized\n");
iounmap(adata->acp3x_base);
pci_disable_msi(pci);
--
2.7.4
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