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media: atomisp: Remove useless msleep(10) before power-on on BYT

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On BYT on poweron/runtime-resume the code is doing:

1. Do nothing
2. msleep(10)
3. Start actual poweron sequence

Since the runtime resume can happen at any moment, waiting 10ms
after it does not really make any sense.

According to both the comment and to:
https://github.com/intel/ProductionKernelQuilts/blob/master/uefi/cht-m1stable/patches/cam-0341-atomisp-WA-sleep-10ms-when-power-up-ISP-on-byt.patch

Which is the patch which originally added this this was added
as a workaround for a single test failing on a single model
tablet/laptop. So lets just drop this.

Reviewed-by: Andy Shevchenko <andy@kernel.org>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
This commit is contained in:
Hans de Goede
2023-01-15 15:37:41 +01:00
committed by Mauro Carvalho Chehab
parent e6548795bb
commit 94afce19ff
1 changed files with 0 additions and 8 deletions
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8
drivers/staging/media/atomisp/pci/atomisp_v4l2.c
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@@ -665,14 +665,6 @@ static int atomisp_mrfld_power(struct atomisp_device *isp, bool enable)
msleep(20);
}
/*
* FIXME:WA for ECS28A, with this sleep, CTS
* android.hardware.camera2.cts.CameraDeviceTest#testCameraDeviceAbort
* PASS, no impact on other platforms
*/
if (IS_BYT && enable)
msleep(10);
/* Write to ISPSSPM0 bit[1:0] to power on/off the IUNIT */
iosf_mbi_modify(BT_MBI_UNIT_PMC, MBI_REG_READ, MRFLD_ISPSSPM0,
val, MRFLD_ISPSSPM0_ISPSSC_MASK);