msm: mdss: support enter/exit DCM for calibration
This change supports the enter/exit DCM for calibration tool.
It blocks the unblank operation if target is in DCM (Display
Calibration Mode).
Change-Id: If65449b9863bb1f9ca0346d736b6939261d1394e
Signed-off-by: Arpita Banerjee <cabane@codeaurora.org>
diff --git a/drivers/video/msm/mdss/mdss_fb.c b/drivers/video/msm/mdss/mdss_fb.c
index d9fffa8..ea40efe 100644
--- a/drivers/video/msm/mdss/mdss_fb.c
+++ b/drivers/video/msm/mdss/mdss_fb.c
@@ -111,7 +111,7 @@
return ret;
}
- if (notify > NOTIFY_UPDATE_STOP)
+ if (notify > NOTIFY_UPDATE_POWER_OFF)
return -EINVAL;
if (notify == NOTIFY_UPDATE_START) {
@@ -119,12 +119,19 @@
ret = wait_for_completion_interruptible_timeout(
&mfd->update.comp, 4 * HZ);
to_user = mfd->update.value;
- } else {
+ } else if (notify == NOTIFY_UPDATE_STOP) {
INIT_COMPLETION(mfd->no_update.comp);
ret = wait_for_completion_interruptible_timeout(
&mfd->no_update.comp, 4 * HZ);
to_user = mfd->no_update.value;
+ } else {
+ if (mfd->panel_power_on) {
+ INIT_COMPLETION(mfd->power_off_comp);
+ ret = wait_for_completion_interruptible_timeout(
+ &mfd->power_off_comp, 1 * HZ);
+ }
}
+
if (ret == 0)
ret = -ETIMEDOUT;
else if (ret > 0)
@@ -605,6 +612,9 @@
if (!op_enable)
return -EPERM;
+ if (mfd->dcm_state == DCM_ENTER)
+ return -EPERM;
+
switch (blank_mode) {
case FB_BLANK_UNBLANK:
if (!mfd->panel_power_on && mfd->mdp.on_fnc) {
@@ -646,6 +656,7 @@
else
mdss_fb_release_fences(mfd);
mfd->op_enable = true;
+ complete(&mfd->power_off_comp);
}
break;
}
@@ -975,6 +986,7 @@
mfd->ref_cnt = 0;
mfd->panel_power_on = false;
+ mfd->dcm_state = DCM_UNINIT;
if (mdss_fb_alloc_fbmem(mfd)) {
pr_err("unable to allocate framebuffer memory\n");
@@ -991,6 +1003,7 @@
mfd->no_update.timer.data = (unsigned long)mfd;
init_completion(&mfd->update.comp);
init_completion(&mfd->no_update.comp);
+ init_completion(&mfd->power_off_comp);
init_completion(&mfd->commit_comp);
init_completion(&mfd->power_set_comp);
INIT_WORK(&mfd->commit_work, mdss_fb_commit_wq_handler);
@@ -1475,6 +1488,58 @@
return 0;
}
+int mdss_fb_dcm(struct msm_fb_data_type *mfd, int req_state)
+{
+ int ret = -EINVAL;
+
+ if (req_state == mfd->dcm_state) {
+ pr_warn("Already in correct DCM state");
+ ret = 0;
+ }
+
+ switch (req_state) {
+ case DCM_UNBLANK:
+ if (mfd->dcm_state == DCM_UNINIT &&
+ !mfd->panel_power_on && mfd->mdp.on_fnc) {
+ ret = mfd->mdp.on_fnc(mfd);
+ if (ret == 0) {
+ mfd->panel_power_on = true;
+ mfd->dcm_state = DCM_UNBLANK;
+ }
+ }
+ break;
+ case DCM_ENTER:
+ if (mfd->dcm_state == DCM_UNBLANK) {
+ /* Keep unblank path available for only
+ DCM operation */
+ mfd->panel_power_on = false;
+ mfd->dcm_state = DCM_ENTER;
+ ret = 0;
+ }
+ break;
+ case DCM_EXIT:
+ if (mfd->dcm_state == DCM_ENTER) {
+ /* Release the unblank path for exit */
+ mfd->panel_power_on = true;
+ mfd->dcm_state = DCM_EXIT;
+ ret = 0;
+ }
+ break;
+ case DCM_BLANK:
+ if ((mfd->dcm_state == DCM_EXIT ||
+ mfd->dcm_state == DCM_UNBLANK) &&
+ mfd->panel_power_on && mfd->mdp.off_fnc) {
+ ret = mfd->mdp.off_fnc(mfd);
+ if (ret == 0) {
+ mfd->panel_power_on = false;
+ mfd->dcm_state = DCM_UNINIT;
+ }
+ }
+ break;
+ }
+ return ret;
+}
+
static int mdss_fb_cursor(struct fb_info *info, void __user *p)
{
struct msm_fb_data_type *mfd = (struct msm_fb_data_type *)info->par;
diff --git a/drivers/video/msm/mdss/mdss_fb.h b/drivers/video/msm/mdss/mdss_fb.h
index 98bca03..c8f6779 100644
--- a/drivers/video/msm/mdss/mdss_fb.h
+++ b/drivers/video/msm/mdss/mdss_fb.h
@@ -122,6 +122,7 @@
struct disp_info_notify update;
struct disp_info_notify no_update;
+ struct completion power_off_comp;
struct msm_mdp_interface mdp;
@@ -143,6 +144,8 @@
void *msm_fb_backup;
struct completion power_set_comp;
u32 is_power_setting;
+
+ u32 dcm_state;
};
struct msm_fb_backup_type {
@@ -175,4 +178,5 @@
void mdss_fb_wait_for_fence(struct msm_fb_data_type *mfd);
void mdss_fb_signal_timeline(struct msm_fb_data_type *mfd);
int mdss_fb_register_mdp_instance(struct msm_mdp_interface *mdp);
+int mdss_fb_dcm(struct msm_fb_data_type *mfd, int req_state);
#endif /* MDSS_FB_H */
diff --git a/drivers/video/msm/mdss/mdss_mdp_overlay.c b/drivers/video/msm/mdss/mdss_mdp_overlay.c
index ebdf28a..7bfc7e0 100644
--- a/drivers/video/msm/mdss/mdss_mdp_overlay.c
+++ b/drivers/video/msm/mdss/mdss_mdp_overlay.c
@@ -1518,6 +1518,13 @@
if (ret)
return ret;
+ /* Supprt only MDP register read/write and
+ exit_dcm in DCM state*/
+ if (mfd->dcm_state == DCM_ENTER &&
+ (mdp_pp.op != mdp_op_calib_buffer &&
+ mdp_pp.op != mdp_op_calib_dcm_state))
+ return -EPERM;
+
switch (mdp_pp.op) {
case mdp_op_pa_cfg:
ret = mdss_mdp_pa_config(mdp5_data->ctl,
@@ -1598,6 +1605,9 @@
(struct mdp_calib_config_buffer *)
&mdp_pp.data.calib_buffer, ©back);
break;
+ case mdp_op_calib_dcm_state:
+ ret = mdss_fb_dcm(mfd, mdp_pp.data.calib_dcm.dcm_state);
+ break;
default:
pr_err("Unsupported request to MDP_PP IOCTL. %d = op\n",
mdp_pp.op);
diff --git a/include/linux/msm_mdp.h b/include/linux/msm_mdp.h
index c3ff9de..62306a1 100644
--- a/include/linux/msm_mdp.h
+++ b/include/linux/msm_mdp.h
@@ -87,6 +87,7 @@
enum {
NOTIFY_UPDATE_START,
NOTIFY_UPDATE_STOP,
+ NOTIFY_UPDATE_POWER_OFF,
};
enum {
@@ -612,6 +613,19 @@
uint32_t *buffer;
};
+struct mdp_calib_dcm_state {
+ uint32_t ops;
+ uint32_t dcm_state;
+};
+
+enum {
+ DCM_UNINIT,
+ DCM_UNBLANK,
+ DCM_ENTER,
+ DCM_EXIT,
+ DCM_BLANK,
+};
+
#define MDSS_MAX_BL_BRIGHTNESS 255
#define AD_BL_LIN_LEN (MDSS_MAX_BL_BRIGHTNESS + 1)
@@ -704,6 +718,7 @@
mdp_op_ad_input,
mdp_op_calib_mode,
mdp_op_calib_buffer,
+ mdp_op_calib_dcm_state,
mdp_op_max,
};
@@ -732,6 +747,7 @@
struct mdss_calib_cfg mdss_calib_cfg;
struct mdss_ad_input ad_input;
struct mdp_calib_config_buffer calib_buffer;
+ struct mdp_calib_dcm_state calib_dcm;
} data;
};