diff options
Diffstat (limited to 'drivers/gpu/drm/msm/dp/dp_ctrl.c')
| -rw-r--r-- | drivers/gpu/drm/msm/dp/dp_ctrl.c | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/drivers/gpu/drm/msm/dp/dp_ctrl.c b/drivers/gpu/drm/msm/dp/dp_ctrl.c index 872b12689e31..7572264a7156 100644 --- a/drivers/gpu/drm/msm/dp/dp_ctrl.c +++ b/drivers/gpu/drm/msm/dp/dp_ctrl.c @@ -10,6 +10,7 @@ #include <linux/delay.h> #include <linux/phy/phy.h> #include <linux/phy/phy-dp.h> +#include <linux/pm_opp.h> #include <drm/drm_fixed.h> #include <drm/drm_dp_helper.h> #include <drm/drm_print.h> @@ -76,6 +77,8 @@ struct dp_ctrl_private { struct dp_parser *parser; struct dp_catalog *catalog; + struct opp_table *opp_table; + struct completion idle_comp; struct completion video_comp; }; @@ -1833,6 +1836,7 @@ struct dp_ctrl *dp_ctrl_get(struct device *dev, struct dp_link *link, struct dp_parser *parser) { struct dp_ctrl_private *ctrl; + int ret; if (!dev || !panel || !aux || !link || !catalog) { @@ -1846,6 +1850,21 @@ struct dp_ctrl *dp_ctrl_get(struct device *dev, struct dp_link *link, return ERR_PTR(-ENOMEM); } + ctrl->opp_table = dev_pm_opp_set_clkname(dev, "ctrl_link"); + if (IS_ERR(ctrl->opp_table)) { + dev_err(dev, "invalid DP OPP table in device tree\n"); + /* caller do PTR_ERR(ctrl->opp_table) */ + return (struct dp_ctrl *)ctrl->opp_table; + } + + /* OPP table is optional */ + ret = dev_pm_opp_of_add_table(dev); + if (ret) { + dev_err(dev, "failed to add DP OPP table\n"); + dev_pm_opp_put_clkname(ctrl->opp_table); + ctrl->opp_table = NULL; + } + init_completion(&ctrl->idle_comp); init_completion(&ctrl->video_comp); @@ -1863,4 +1882,13 @@ struct dp_ctrl *dp_ctrl_get(struct device *dev, struct dp_link *link, void dp_ctrl_put(struct dp_ctrl *dp_ctrl) { + struct dp_ctrl_private *ctrl; + + ctrl = container_of(dp_ctrl, struct dp_ctrl_private, dp_ctrl); + + if (ctrl->opp_table) { + dev_pm_opp_of_remove_table(ctrl->dev); + dev_pm_opp_put_clkname(ctrl->opp_table); + ctrl->opp_table = NULL; + } } |