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msm: mdss: switch mdp context between active-only and active+sleep

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This change modifies MDP vote to go to Active-Only in
an early stage when bandwidth is not needed and updates
the vote to Active+Sleep when bandwidth must be guaranteed.

Change-Id: I6ccb7a225f97416128518c990d881fa139ec1963
Signed-off-by: Ingrid Gallardo <ingridg@codeaurora.org>
This commit is contained in:
Ingrid Gallardo 2015-06-17 12:39:18 -07:00 • committed by David Keitel
parent 7d1d28c420
commit 75bb23a67b
3 changed files with 19 additions and 1 deletions
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1
drivers/video/fbdev/msm/mdss.h
View file

@ -316,6 +316,7 @@ struct mdss_data_type {
u32 nrt_axi_port_cnt;
u32 bus_channels;
u32 curr_bw_uc_idx;
u32 ao_bw_uc_idx; /* active only idx */
struct msm_bus_scale_pdata *bus_scale_table;
u32 max_bw_low;
u32 max_bw_high;

16
drivers/video/fbdev/msm/mdss_mdp.c
View file

@ -397,6 +397,7 @@ static int mdss_mdp_bus_scale_set_quota(u64 ab_quota_rt, u64 ab_quota_nrt,
}
}
mdss_res->curr_bw_uc_idx = new_uc_idx;
mdss_res->ao_bw_uc_idx = new_uc_idx;
if ((mdss_res->bus_ref_cnt == 0) && mdss_res->curr_bw_uc_idx) {
rc = 0;
@ -833,9 +834,11 @@ void mdss_bus_bandwidth_ctrl(int enable)
if (changed) {
if (!enable) {
if (!mdata->handoff_pending)
if (!mdata->handoff_pending) {
msm_bus_scale_client_update_request(
mdata->bus_hdl, 0);
mdata->ao_bw_uc_idx = 0;
}
pm_runtime_mark_last_busy(&mdata->pdev->dev);
pm_runtime_put_autosuspend(&mdata->pdev->dev);
} else {
@ -880,8 +883,13 @@ void mdss_mdp_clk_ctrl(int enable)
if (changed) {
if (enable) {
pm_runtime_get_sync(&mdata->pdev->dev);
mdss_update_reg_bus_vote(mdata->reg_bus_clt,
VOTE_INDEX_19_MHZ);
/* Active+Sleep */
msm_bus_scale_client_update_context(mdata->bus_hdl,
false, mdata->curr_bw_uc_idx);
}
mdata->clk_ena = enable;
@ -893,8 +901,14 @@ void mdss_mdp_clk_ctrl(int enable)
mdss_mdp_clk_update(MDSS_CLK_MDP_VSYNC, enable);
if (!enable) {
/* Active-Only */
msm_bus_scale_client_update_context(mdata->bus_hdl,
true, mdata->ao_bw_uc_idx);
mdss_update_reg_bus_vote(mdata->reg_bus_clt,
VOTE_INDEX_DISABLE);
pm_runtime_mark_last_busy(&mdata->pdev->dev);
pm_runtime_put_autosuspend(&mdata->pdev->dev);
}

3
drivers/video/fbdev/msm/mdss_mdp_intf_cmd.c
View file

@ -485,6 +485,9 @@ int mdss_mdp_resource_control(struct mdss_mdp_ctl *ctl, u32 sw_event)
* cancel as well.
*/
/* update the active only vote */
mdata->ao_bw_uc_idx = mdata->curr_bw_uc_idx;
/* Cancel GATE Work Item */
if (cancel_work_sync(&ctx->gate_clk_work)) {
pr_debug("%s gate work canceled\n", __func__);