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path: root/drivers/gpu/drm/msm/dp/dp_power.c
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Diffstat (limited to 'drivers/gpu/drm/msm/dp/dp_power.c')
-rw-r--r--drivers/gpu/drm/msm/dp/dp_power.c44
1 files changed, 40 insertions, 4 deletions
diff --git a/drivers/gpu/drm/msm/dp/dp_power.c b/drivers/gpu/drm/msm/dp/dp_power.c
index 17c1fc6a2d44..9c4ea00a5f2a 100644
--- a/drivers/gpu/drm/msm/dp/dp_power.c
+++ b/drivers/gpu/drm/msm/dp/dp_power.c
@@ -8,12 +8,14 @@
#include <linux/clk.h>
#include <linux/clk-provider.h>
#include <linux/regulator/consumer.h>
+#include <linux/pm_opp.h>
#include "dp_power.h"
#include "msm_drv.h"
struct dp_power_private {
struct dp_parser *parser;
struct platform_device *pdev;
+ struct device *dev;
struct clk *link_clk_src;
struct clk *pixel_provider;
struct clk *link_provider;
@@ -148,18 +150,51 @@ static int dp_power_clk_deinit(struct dp_power_private *power)
return 0;
}
+static int dp_power_clk_set_link_rate(struct dp_power_private *power,
+ struct dss_clk *clk_arry, int num_clk, int enable)
+{
+ u32 rate;
+ int i, rc = 0;
+
+ for (i = 0; i < num_clk; i++) {
+ if (clk_arry[i].clk) {
+ if (clk_arry[i].type == DSS_CLK_PCLK) {
+ if (enable)
+ rate = clk_arry[i].rate;
+ else
+ rate = 0;
+
+ rc = dev_pm_opp_set_rate(power->dev, rate);
+ if (rc)
+ break;
+ }
+
+ }
+ }
+ return rc;
+}
+
static int dp_power_clk_set_rate(struct dp_power_private *power,
enum dp_pm_type module, bool enable)
{
int rc = 0;
struct dss_module_power *mp = &power->parser->mp[module];
- if (enable) {
- rc = msm_dss_clk_set_rate(mp->clk_config, mp->num_clk);
+ if (module == DP_CTRL_PM) {
+ rc = dp_power_clk_set_link_rate(power, mp->clk_config, mp->num_clk, enable);
if (rc) {
- DRM_ERROR("failed to set clks rate.\n");
+ DRM_ERROR("failed to set link clks rate\n");
return rc;
}
+ } else {
+
+ if (enable) {
+ rc = msm_dss_clk_set_rate(mp->clk_config, mp->num_clk);
+ if (rc) {
+ DRM_ERROR("failed to set clks rate\n");
+ return rc;
+ }
+ }
}
rc = msm_dss_enable_clk(mp->clk_config, mp->num_clk, enable);
@@ -349,7 +384,7 @@ int dp_power_deinit(struct dp_power *dp_power)
return 0;
}
-struct dp_power *dp_power_get(struct dp_parser *parser)
+struct dp_power *dp_power_get(struct device *dev, struct dp_parser *parser)
{
struct dp_power_private *power;
struct dp_power *dp_power;
@@ -365,6 +400,7 @@ struct dp_power *dp_power_get(struct dp_parser *parser)
power->parser = parser;
power->pdev = parser->pdev;
+ power->dev = dev;
dp_power = &power->dp_power;