drm/msm/dp: inline dp_power_(de)init

In preparation to cleanup of the dp_power module, inline dp_power_init()
and dp_power_deinit() functions, which are now just turning the clocks
on and off.
Reviewed-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Tested-by: Kuogee Hsieh <quic_khsieh@quicinc.com>
Reviewed-by: Kuogee Hsieh <quic_khsieh@quicinc.com>
Patchwork: https://patchwork.freedesktop.org/patch/576113/
Link: https://lore.kernel.org/r/20240126-dp-power-parser-cleanup-v3-4-098d5f581dd3@linaro.org

drivers/gpu/drm/msm/dp/dp_display.c

@@ -435,7 +435,7 @@ static void dp_display_host_init(struct dp_display_private *dp)
 		dp->dp_display.connector_type, dp->core_initialized,
 		dp->phy_initialized);
 
-	dp_power_init(dp->power);
+	dp_power_clk_enable(dp->power, DP_CORE_PM, true);
 	dp_ctrl_reset_irq_ctrl(dp->ctrl, true);
 	dp_aux_init(dp->aux);
 	dp->core_initialized = true;
@@ -449,7 +449,7 @@ static void dp_display_host_deinit(struct dp_display_private *dp)
 
 	dp_ctrl_reset_irq_ctrl(dp->ctrl, false);
 	dp_aux_deinit(dp->aux);
-	dp_power_deinit(dp->power);
+	dp_power_clk_enable(dp->power, DP_CORE_PM, false);
 	dp->core_initialized = false;
 }
 

drivers/gpu/drm/msm/dp/dp_power.c

@@ -152,16 +152,6 @@ int dp_power_client_init(struct dp_power *dp_power)
 	return dp_power_clk_init(power);
 }
 
-int dp_power_init(struct dp_power *dp_power)
-{
-	return dp_power_clk_enable(dp_power, DP_CORE_PM, true);
-}
-
-int dp_power_deinit(struct dp_power *dp_power)
-{
-	return dp_power_clk_enable(dp_power, DP_CORE_PM, false);
-}
-
 struct dp_power *dp_power_get(struct device *dev, struct dp_parser *parser)
 {
 	struct dp_power_private *power;

drivers/gpu/drm/msm/dp/dp_power.h

@@ -22,27 +22,6 @@ struct dp_power {
 	bool stream_clks_on;
 };
 
-/**
- * dp_power_init() - enable power supplies for display controller
- *
- * @power: instance of power module
- * return: 0 if success or error if failure.
- *
- * This API will turn on the regulators and configures gpio's
- * aux/hpd.
- */
-int dp_power_init(struct dp_power *power);
-
-/**
- * dp_power_deinit() - turn off regulators and gpios.
- *
- * @power: instance of power module
- * return: 0 for success
- *
- * This API turns off power and regulators.
- */
-int dp_power_deinit(struct dp_power *power);
-
 /**
  * dp_power_clk_status() - display controller clocks status
  *