diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/video/fbdev/msm/mdss_mdp.c | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/drivers/video/fbdev/msm/mdss_mdp.c b/drivers/video/fbdev/msm/mdss_mdp.c index 518b84fbad51..ca91742400ab 100644 --- a/drivers/video/fbdev/msm/mdss_mdp.c +++ b/drivers/video/fbdev/msm/mdss_mdp.c @@ -1454,6 +1454,35 @@ end: } /** + * mdss_mdp_retention_init() - initialize retention setting + * @mdata: pointer to the global mdss data structure. + */ +static int mdss_mdp_retention_init(struct mdss_data_type *mdata) +{ + struct clk *mdss_axi_clk = mdss_mdp_get_clk(MDSS_CLK_AXI); + int rc; + + if (!mdss_axi_clk) { + pr_err("failed to get AXI clock\n"); + return -EINVAL; + } + + rc = clk_set_flags(mdss_axi_clk, CLKFLAG_NORETAIN_MEM); + if (rc) { + pr_err("failed to set AXI no memory retention %d\n", rc); + return rc; + } + + rc = clk_set_flags(mdss_axi_clk, CLKFLAG_NORETAIN_PERIPH); + if (rc) { + pr_err("failed to set AXI no periphery retention %d\n", rc); + return rc; + } + + return rc; +} + +/** * mdss_bus_bandwidth_ctrl() -- place bus bandwidth request * @enable: value of enable or disable * @@ -2718,6 +2747,12 @@ static int mdss_mdp_probe(struct platform_device *pdev) goto probe_done; } + rc = mdss_mdp_retention_init(mdata); + if (rc) { + pr_err("unable to initialize mdss mdp retention\n"); + goto probe_done; + } + pm_runtime_set_autosuspend_delay(&pdev->dev, AUTOSUSPEND_TIMEOUT_MS); if (mdata->idle_pc_enabled) pm_runtime_use_autosuspend(&pdev->dev); |