evie/android_kernel_oneplus_msm8998
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msm: camera: isp: enable/disable hvx only if the state changed

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Save the previous satates of HVX . enable or disable
hvx only if the previous state is different from current state.

Change-Id: I24081d1fccff17a0da26ff213df056c7a1cb6388
Signed-off-by: Senthil Kumar Rajagopal <skrajago@codeaurora.org>
This commit is contained in:
Senthil Kumar Rajagopal 2017-02-21 19:37:35 +05:30 • committed by Gerrit - the friendly Code Review server
parent 10a55a5874
commit e76210808d
2 changed files with 6 additions and 0 deletions
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1
drivers/media/platform/msm/camera_v2/isp/msm_isp.h
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@ -792,6 +792,7 @@ struct vfe_device {
struct msm_vfe_error_info error_info;
struct msm_vfe_fetch_engine_info fetch_engine_info;
enum msm_vfe_hvx_streaming_cmd hvx_cmd;
uint8_t cur_hvx_state;
/* State variables */
uint32_t vfe_hw_version;

5
drivers/media/platform/msm/camera_v2/isp/msm_isp47.c
View file

@ -1494,6 +1494,10 @@ void msm_vfe47_configure_hvx(struct vfe_device *vfe_dev,
uint32_t val;
int rc = 0;
if (is_stream_on == vfe_dev->cur_hvx_state) {
ISP_DBG("already in same hvx state\n");
return;
}
if (vfe_dev->buf_mgr->secure_enable == SECURE_MODE) {
pr_err("%s: Cannot configure hvx, secure_mode: %d\n",
__func__,
@ -1527,6 +1531,7 @@ void msm_vfe47_configure_hvx(struct vfe_device *vfe_dev,
val &= 0xFFFFFFF7;
msm_camera_io_w_mb(val, vfe_dev->vfe_base + 0x50);
}
vfe_dev->cur_hvx_state = is_stream_on;
}
void msm_vfe47_update_camif_state(struct vfe_device *vfe_dev,