[DPU PATCH v2 08/12] drm/msm/dpu: remove power management code from dpu_power_handle

[Rajesh Yadav <ryadav-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org>]

Mdss main power supply (mdss_gdsc) is implemented as a
generic power domain and mdss top level wrapper device
manage it via runtime_pm. Remove custom power management
code from dpu_power_handle.

Changes in v2:
	- resolved merge conflict in dpu_power_resource_init
	- dropped (Reviewed-by: Sean Paul) due to above change

Signed-off-by: Rajesh Yadav <ryadav@codeaurora.org>
---
 drivers/gpu/drm/msm/dpu_power_handle.c | 194 +--------------------------------
 drivers/gpu/drm/msm/dpu_power_handle.h |   2 -
 2 files changed, 3 insertions(+), 193 deletions(-)

diff --git a/drivers/gpu/drm/msm/dpu_power_handle.c b/drivers/gpu/drm/msm/dpu_power_handle.c
index 12602ae..77be106 100644
--- a/drivers/gpu/drm/msm/dpu_power_handle.c
+++ b/drivers/gpu/drm/msm/dpu_power_handle.c
@@ -101,150 +101,6 @@ void dpu_power_client_destroy(struct dpu_power_handle *phandle,
 	}
 }
 
-static int dpu_power_parse_dt_supply(struct platform_device *pdev,
-				struct dss_module_power *mp)
-{
-	int i = 0, rc = 0;
-	u32 tmp = 0;
-	struct device_node *of_node = NULL, *supply_root_node = NULL;
-	struct device_node *supply_node = NULL;
-
-	if (!pdev || !mp) {
-		pr_err("invalid input param pdev:%pK mp:%pK\n", pdev, mp);
-		return -EINVAL;
-	}
-
-	of_node = pdev->dev.of_node;
-
-	mp->num_vreg = 0;
-	supply_root_node = of_get_child_by_name(of_node,
-						"qcom,platform-supply-entries");
-	if (!supply_root_node) {
-		pr_debug("no supply entry present\n");
-		return rc;
-	}
-
-	for_each_child_of_node(supply_root_node, supply_node)
-		mp->num_vreg++;
-
-	if (mp->num_vreg == 0) {
-		pr_debug("no vreg\n");
-		return rc;
-	}
-
-	pr_debug("vreg found. count=%d\n", mp->num_vreg);
-	mp->vreg_config = devm_kzalloc(&pdev->dev, sizeof(struct dss_vreg) *
-						mp->num_vreg, GFP_KERNEL);
-	if (!mp->vreg_config) {
-		rc = -ENOMEM;
-		return rc;
-	}
-
-	for_each_child_of_node(supply_root_node, supply_node) {
-
-		const char *st = NULL;
-
-		rc = of_property_read_string(supply_node,
-						"qcom,supply-name", &st);
-		if (rc) {
-			pr_err("error reading name. rc=%d\n", rc);
-			goto error;
-		}
-
-		strlcpy(mp->vreg_config[i].vreg_name, st,
-					sizeof(mp->vreg_config[i].vreg_name));
-
-		rc = of_property_read_u32(supply_node,
-					"qcom,supply-min-voltage", &tmp);
-		if (rc) {
-			pr_err("error reading min volt. rc=%d\n", rc);
-			goto error;
-		}
-		mp->vreg_config[i].min_voltage = tmp;
-
-		rc = of_property_read_u32(supply_node,
-					"qcom,supply-max-voltage", &tmp);
-		if (rc) {
-			pr_err("error reading max volt. rc=%d\n", rc);
-			goto error;
-		}
-		mp->vreg_config[i].max_voltage = tmp;
-
-		rc = of_property_read_u32(supply_node,
-					"qcom,supply-enable-load", &tmp);
-		if (rc) {
-			pr_err("error reading enable load. rc=%d\n", rc);
-			goto error;
-		}
-		mp->vreg_config[i].enable_load = tmp;
-
-		rc = of_property_read_u32(supply_node,
-					"qcom,supply-disable-load", &tmp);
-		if (rc) {
-			pr_err("error reading disable load. rc=%d\n", rc);
-			goto error;
-		}
-		mp->vreg_config[i].disable_load = tmp;
-
-		rc = of_property_read_u32(supply_node,
-					"qcom,supply-pre-on-sleep", &tmp);
-		if (rc)
-			pr_debug("error reading supply pre sleep value. rc=%d\n",
-							rc);
-
-		mp->vreg_config[i].pre_on_sleep = (!rc ? tmp : 0);
-
-		rc = of_property_read_u32(supply_node,
-					"qcom,supply-pre-off-sleep", &tmp);
-		if (rc)
-			pr_debug("error reading supply pre sleep value. rc=%d\n",
-							rc);
-
-		mp->vreg_config[i].pre_off_sleep = (!rc ? tmp : 0);
-
-		rc = of_property_read_u32(supply_node,
-					"qcom,supply-post-on-sleep", &tmp);
-		if (rc)
-			pr_debug("error reading supply post sleep value. rc=%d\n",
-							rc);
-
-		mp->vreg_config[i].post_on_sleep = (!rc ? tmp : 0);
-
-		rc = of_property_read_u32(supply_node,
-					"qcom,supply-post-off-sleep", &tmp);
-		if (rc)
-			pr_debug("error reading supply post sleep value. rc=%d\n",
-							rc);
-
-		mp->vreg_config[i].post_off_sleep = (!rc ? tmp : 0);
-
-		pr_debug("%s min=%d, max=%d, enable=%d, disable=%d, preonsleep=%d, postonsleep=%d, preoffsleep=%d, postoffsleep=%d\n",
-					mp->vreg_config[i].vreg_name,
-					mp->vreg_config[i].min_voltage,
-					mp->vreg_config[i].max_voltage,
-					mp->vreg_config[i].enable_load,
-					mp->vreg_config[i].disable_load,
-					mp->vreg_config[i].pre_on_sleep,
-					mp->vreg_config[i].post_on_sleep,
-					mp->vreg_config[i].pre_off_sleep,
-					mp->vreg_config[i].post_off_sleep);
-		++i;
-
-		rc = 0;
-	}
-
-	return rc;
-
-error:
-	if (mp->vreg_config) {
-		devm_kfree(&pdev->dev, mp->vreg_config);
-		mp->vreg_config = NULL;
-		mp->num_vreg = 0;
-	}
-
-	return rc;
-}
-
 #ifdef CONFIG_QCOM_BUS_SCALING
 
 #define MAX_AXI_PORT_COUNT 3
@@ -614,33 +470,18 @@ int dpu_power_resource_init(struct platform_device *pdev,
 	struct dpu_power_handle *phandle)
 {
 	int rc = 0, i;
-	struct dss_module_power *mp;
 
 	if (!phandle || !pdev) {
 		pr_err("invalid input param\n");
-		rc = -EINVAL;
-		goto end;
-	}
-	mp = &phandle->mp;
-	phandle->dev = &pdev->dev;
-
-	rc = dpu_power_parse_dt_supply(pdev, mp);
-	if (rc) {
-		pr_err("device vreg supply parsing failed\n");
-		return rc;
+		return -EINVAL;
 	}
 
-	rc = msm_dss_config_vreg(&pdev->dev,
-				mp->vreg_config, mp->num_vreg, 1);
-	if (rc) {
-		pr_err("vreg config failed rc=%d\n", rc);
-		goto vreg_err;
-	}
+	phandle->dev = &pdev->dev;
 
 	rc = dpu_power_reg_bus_parse(pdev, phandle);
 	if (rc) {
 		pr_err("register bus parse failed rc=%d\n", rc);
-		goto bus_err;
+		return rc;
 	}
 
 	for (i = DPU_POWER_HANDLE_DBUS_ID_MNOC;
@@ -666,19 +507,12 @@ int dpu_power_resource_init(struct platform_device *pdev,
 	for (i--; i >= 0; i--)
 		dpu_power_data_bus_unregister(&phandle->data_bus_handle[i]);
 	dpu_power_reg_bus_unregister(phandle->reg_bus_hdl);
-bus_err:
-	msm_dss_config_vreg(&pdev->dev, mp->vreg_config, mp->num_vreg, 0);
-vreg_err:
-	if (mp->vreg_config)
-		devm_kfree(&pdev->dev, mp->vreg_config);
-	mp->num_vreg = 0;
 	return rc;
 }
 
 void dpu_power_resource_deinit(struct platform_device *pdev,
 	struct dpu_power_handle *phandle)
 {
-	struct dss_module_power *mp;
 	struct dpu_power_client *curr_client, *next_client;
 	struct dpu_power_event *curr_event, *next_event;
 	int i;
@@ -687,7 +521,6 @@ void dpu_power_resource_deinit(struct platform_device *pdev,
 		pr_err("invalid input param\n");
 		return;
 	}
-	mp = &phandle->mp;
 
 	mutex_lock(&phandle->phandle_lock);
 	list_for_each_entry_safe(curr_client, next_client,
@@ -713,13 +546,6 @@ void dpu_power_resource_deinit(struct platform_device *pdev,
 		dpu_power_data_bus_unregister(&phandle->data_bus_handle[i]);
 
 	dpu_power_reg_bus_unregister(phandle->reg_bus_hdl);
-
-	msm_dss_config_vreg(&pdev->dev, mp->vreg_config, mp->num_vreg, 0);
-
-	if (mp->vreg_config)
-		devm_kfree(&pdev->dev, mp->vreg_config);
-
-	mp->num_vreg = 0;
 }
 
 int dpu_power_resource_enable(struct dpu_power_handle *phandle,
@@ -729,15 +555,12 @@ int dpu_power_resource_enable(struct dpu_power_handle *phandle,
 	bool changed = false;
 	u32 max_usecase_ndx = VOTE_INDEX_DISABLE, prev_usecase_ndx;
 	struct dpu_power_client *client;
-	struct dss_module_power *mp;
 
 	if (!phandle || !pclient) {
 		pr_err("invalid input argument\n");
 		return -EINVAL;
 	}
 
-	mp = &phandle->mp;
-
 	mutex_lock(&phandle->phandle_lock);
 	if (enable)
 		pclient->refcount++;
@@ -782,13 +605,6 @@ int dpu_power_resource_enable(struct dpu_power_handle *phandle,
 			}
 		}
 
-		rc = msm_dss_enable_vreg(mp->vreg_config, mp->num_vreg,
-								enable);
-		if (rc) {
-			pr_err("failed to enable vregs rc=%d\n", rc);
-			goto vreg_err;
-		}
-
 		rc = dpu_power_reg_bus_update(phandle->reg_bus_hdl,
 							max_usecase_ndx);
 		if (rc) {
@@ -806,8 +622,6 @@ int dpu_power_resource_enable(struct dpu_power_handle *phandle,
 		dpu_power_reg_bus_update(phandle->reg_bus_hdl,
 							max_usecase_ndx);
 
-		msm_dss_enable_vreg(mp->vreg_config, mp->num_vreg,
-							enable);
 		for (i = 0 ; i < DPU_POWER_HANDLE_DBUS_ID_MAX; i++)
 			dpu_power_data_bus_update(&phandle->data_bus_handle[i],
 					enable);
@@ -821,8 +635,6 @@ int dpu_power_resource_enable(struct dpu_power_handle *phandle,
 	return rc;
 
 reg_bus_hdl_err:
-	msm_dss_enable_vreg(mp->vreg_config, mp->num_vreg, 0);
-vreg_err:
 	for (i = 0 ; i < DPU_POWER_HANDLE_DBUS_ID_MAX; i++)
 		dpu_power_data_bus_update(&phandle->data_bus_handle[i], 0);
 data_bus_hdl_err:
diff --git a/drivers/gpu/drm/msm/dpu_power_handle.h b/drivers/gpu/drm/msm/dpu_power_handle.h
index 83f048d..9a6d4b9 100644
--- a/drivers/gpu/drm/msm/dpu_power_handle.h
+++ b/drivers/gpu/drm/msm/dpu_power_handle.h
@@ -147,7 +147,6 @@ struct dpu_power_event {
 
 /**
  * struct dpu_power_handle: power handle main struct
- * @mp:		module power for clock and regulator
  * @client_clist: master list to store all clients
  * @phandle_lock: lock to synchronize the enable/disable
  * @dev: pointer to device structure
@@ -157,7 +156,6 @@ struct dpu_power_event {
  * @event_list: current power handle event list
  */
 struct dpu_power_handle {
-	struct dss_module_power mp;
 	struct list_head power_client_clist;
 	struct mutex phandle_lock;
 	struct device *dev;
-- 
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
a Linux Foundation Collaborative Project

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