On 1/22/2019 3:01 AM, Takashi Iwai wrote:
On Mon, 21 Jan 2019 18:41:37 +0100,
Sameer Pujar wrote:
AZX_DCAPS_PM_RUNTIME flag is added to indicate support for runtime PM.
azx_has_pm_runtime() can be called to check if above is enabled. The
flag is put under CONFIG_PM check.
Signed-off-by: Sameer Pujar <spujar@xxxxxxxxxx>
Reviewed-by: Ravindra Lokhande <rlokhande@xxxxxxxxxx>
Reviewed-by: Mohan Kumar D <mkumard@xxxxxxxxxx>
This can be more simply done in hda_controller.h. Namely, a change
like:
--- a/sound/pci/hda/hda_controller.h
+++ b/sound/pci/hda/hda_controller.h
@@ -49,7 +49,11 @@
#define AZX_DCAPS_4K_BDLE_BOUNDARY (1 << 23) /* BDLE in 4k boundary */
/* 24 unused */
#define AZX_DCAPS_COUNT_LPIB_DELAY (1 << 25) /* Take LPIB as delay */
+#ifdef CONFIG_PM
#define AZX_DCAPS_PM_RUNTIME (1 << 26) /* runtime PM support */
+#else
+#define AZX_DCAPS_PM_RUNTIME 0 /* N/A */
+#endif
/* 27 unused */
#define AZX_DCAPS_CORBRP_SELF_CLEAR (1 << 28) /* CORBRP clears itself after reset */
#define AZX_DCAPS_NO_MSI64 (1 << 29) /* Stick to 32-bit MSIs */
In one of the patches in the series, I am using azx_has_pm_runtime() to
forbid runtime PM calls.
I can use above as you suggested. Along with this, I would need to
populate chip->driver_caps with
above flag. Something like below,
--- a/sound/pci/hda/hda_tegra.c
+++ b/sound/pci/hda/hda_tegra.c
@@ -521,7 +521,8 @@ MODULE_DEVICE_TABLE(of, hda_tegra_match);
static int hda_tegra_probe(struct platform_device *pdev)
{
- unsigned int driver_flags = AZX_DCAPS_CORBRP_SELF_CLEAR;
+ unsigned int driver_flags = AZX_DCAPS_CORBRP_SELF_CLEAR |
+ AZX_DCAPS_PM_RUNTIME;
struct snd_card *card;
struct azx *chip;
struct hda_tegra *hda;
Thanks,
Sameer.
thanks,
Takashi
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