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media: camss: vfe: Do not disable CAMIF when clearing its status

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Use "no change" value when clearing CAMIF status and make sure
this is done before configuring the new command.

Signed-off-by: Todor Tomov <todor.tomov@linaro.org>
Signed-off-by: Hans Verkuil <hansverk@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
This commit is contained in:
Todor Tomov 2018-07-25 12:38:23 -04:00 committed by Mauro Carvalho Chehab
parent a93e5f4fc8
commit 06d690f092
1 changed files with 4 additions and 1 deletions
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5
drivers/media/platform/qcom/camss/camss-vfe.c
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@ -156,6 +156,7 @@
#define VFE_0_CAMIF_CMD 0x2f4
#define VFE_0_CAMIF_CMD_DISABLE_FRAME_BOUNDARY 0
#define VFE_0_CAMIF_CMD_ENABLE_FRAME_BOUNDARY 1
#define VFE_0_CAMIF_CMD_NO_CHANGE 3
#define VFE_0_CAMIF_CMD_CLEAR_CAMIF_STATUS (1 << 2)
#define VFE_0_CAMIF_CFG 0x2f8
#define VFE_0_CAMIF_CFG_VFE_OUTPUT_EN (1 << 6)
@ -1021,8 +1022,10 @@ static void vfe_set_camif_cfg(struct vfe_device *vfe, struct vfe_line *line)
static void vfe_set_camif_cmd(struct vfe_device *vfe, u32 cmd)
{
writel_relaxed(VFE_0_CAMIF_CMD_CLEAR_CAMIF_STATUS,
writel_relaxed(VFE_0_CAMIF_CMD_CLEAR_CAMIF_STATUS |
VFE_0_CAMIF_CMD_NO_CHANGE,
vfe->base + VFE_0_CAMIF_CMD);
wmb();
writel_relaxed(cmd, vfe->base + VFE_0_CAMIF_CMD);
}