[PATCH AUTOSEL 4.19 19/68] ASoC: rockchip: Fix mono capture

[PATCH AUTOSEL 4.19 19/68] ASoC: rockchip: Fix mono capture

[Sasha Levin]

From: Cheng-Yi Chiang <cychiang-F7+t8E8rja9g9hUCZPvPmw@public.gmane.org>

[ Upstream commit 789e162a6255325325bd321ab0cd51dc7e285054 ]

This reverts commit db51707b9c9aeedd310ebce60f15d5bb006567e0.
Revert "ASoC: rockchip: i2s: Support mono capture"

Previous discussion in

https://patchwork.kernel.org/patch/10147153/

explains the issue of the patch.
While device is configured as 1-ch, hardware is still
generating a 2-ch stream.
When user space reads the data and assumes it is a 1-ch stream,
the rate will be slower by 2x.

Revert the change so 1-ch is not supported.
User space can selectively take one channel data out of two channel
if 1-ch is preferred.
Currently, both channels record identical data.

Signed-off-by: Cheng-Yi Chiang <cychiang-F7+t8E8rja9g9hUCZPvPmw@public.gmane.org>
Link: https://lore.kernel.org/r/20190726044202.26866-1-cychiang-F7+t8E8rja9g9hUCZPvPmw@public.gmane.org
Signed-off-by: Mark Brown <broonie-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
Signed-off-by: Sasha Levin <sashal-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
---
 sound/soc/rockchip/rockchip_i2s.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/sound/soc/rockchip/rockchip_i2s.c b/sound/soc/rockchip/rockchip_i2s.c
index 60d43d53a8f5e..11399f81c92f9 100644
--- a/sound/soc/rockchip/rockchip_i2s.c
+++ b/sound/soc/rockchip/rockchip_i2s.c
@@ -329,7 +329,6 @@ static int rockchip_i2s_hw_params(struct snd_pcm_substream *substream,
 		val |= I2S_CHN_4;
 		break;
 	case 2:
-	case 1:
 		val |= I2S_CHN_2;
 		break;
 	default:
@@ -462,7 +461,7 @@ static struct snd_soc_dai_driver rockchip_i2s_dai = {
 	},
 	.capture = {
 		.stream_name = "Capture",
-		.channels_min = 1,
+		.channels_min = 2,
 		.channels_max = 2,
 		.rates = SNDRV_PCM_RATE_8000_192000,
 		.formats = (SNDRV_PCM_FMTBIT_S8 |
@@ -662,7 +661,7 @@ static int rockchip_i2s_probe(struct platform_device *pdev)
 	}
 
 	if (!of_property_read_u32(node, "rockchip,capture-channels", &val)) {
-		if (val >= 1 && val <= 8)
+		if (val >= 2 && val <= 8)
 			soc_dai->capture.channels_max = val;
 	}
 
-- 
2.20.1

[PATCH AUTOSEL 4.19 45/68] drm/rockchip: Suspend DP late

[Sasha Levin]

From: Douglas Anderson <dianders@chromium.org>

[ Upstream commit f7ccbed656f78212593ca965d9a8f34bf24e0aab ]

In commit fe64ba5c6323 ("drm/rockchip: Resume DP early") we moved
resume to be early but left suspend at its normal time.  This seems
like it could be OK, but casues problems if a suspend gets interrupted
partway through.  The OS only balances matching suspend/resume levels.
...so if suspend was called then resume will be called.  If suspend
late was called then resume early will be called.  ...but if suspend
was called resume early might not get called.  This leads to an
unbalance in the clock enables / disables.

Lets take the simple fix and just move suspend to be late to match.
This makes the PM core take proper care in keeping things balanced.

Fixes: fe64ba5c6323 ("drm/rockchip: Resume DP early")
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Sean Paul <seanpaul@chromium.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20190802184616.44822-1-dianders@chromium.org
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/gpu/drm/rockchip/analogix_dp-rockchip.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/rockchip/analogix_dp-rockchip.c b/drivers/gpu/drm/rockchip/analogix_dp-rockchip.c
index 080f053521950..6a4da3a0ff1c3 100644
--- a/drivers/gpu/drm/rockchip/analogix_dp-rockchip.c
+++ b/drivers/gpu/drm/rockchip/analogix_dp-rockchip.c
@@ -436,7 +436,7 @@ static int rockchip_dp_resume(struct device *dev)
 
 static const struct dev_pm_ops rockchip_dp_pm_ops = {
 #ifdef CONFIG_PM_SLEEP
-	.suspend = rockchip_dp_suspend,
+	.suspend_late = rockchip_dp_suspend,
 	.resume_early = rockchip_dp_resume,
 #endif
 };
-- 
2.20.1

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