[PATCH v2 09/24] drm/msm: dpu: Remove dpu_power_handle

From: Sean Paul
Date: Fri Nov 16 2018 - 13:43:26 EST

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From: Sean Paul <seanpaul@xxxxxxxxxxxx>

Now that we don't have any event handlers, remove dpu_power_handle!

Changes in v2:
- None

Reviewed-by: Jeykumar Sankaran <jsanka@xxxxxxxxxxxxxx>
Signed-off-by: Sean Paul <seanpaul@xxxxxxxxxxxx>
---
drivers/gpu/drm/msm/Makefile | 1 -
drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c | 11 --
drivers/gpu/drm/msm/disp/dpu1/dpu_kms.h | 3 -
.../gpu/drm/msm/disp/dpu1/dpu_power_handle.c | 136 ------------------
.../gpu/drm/msm/disp/dpu1/dpu_power_handle.h | 113 ---------------
5 files changed, 264 deletions(-)
delete mode 100644 drivers/gpu/drm/msm/disp/dpu1/dpu_power_handle.c
delete mode 100644 drivers/gpu/drm/msm/disp/dpu1/dpu_power_handle.h

diff --git a/drivers/gpu/drm/msm/Makefile b/drivers/gpu/drm/msm/Makefile
index 19ab521d4c3a..7d02ef3655b5 100644
--- a/drivers/gpu/drm/msm/Makefile
+++ b/drivers/gpu/drm/msm/Makefile
@@ -72,7 +72,6 @@ msm-y := \
disp/dpu1/dpu_kms.o \
disp/dpu1/dpu_mdss.o \
disp/dpu1/dpu_plane.o \
- disp/dpu1/dpu_power_handle.o \
disp/dpu1/dpu_rm.o \
disp/dpu1/dpu_vbif.o \
msm_atomic.o \
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c
index af666d917a0b..9f7da56bb453 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c
@@ -1060,8 +1060,6 @@ static int dpu_bind(struct device *dev, struct device *master, void *data)
return ret;
}

- dpu_power_resource_init(pdev, &dpu_kms->phandle);
-
platform_set_drvdata(pdev, dpu_kms);

msm_kms_init(&dpu_kms->base, &kms_funcs);
@@ -1081,7 +1079,6 @@ static void dpu_unbind(struct device *dev, struct device *master, void *data)
struct dpu_kms *dpu_kms = platform_get_drvdata(pdev);
struct dss_module_power *mp = &dpu_kms->mp;

- dpu_power_resource_deinit(pdev, &dpu_kms->phandle);
msm_dss_put_clk(mp->clk_config, mp->num_clk);
devm_kfree(&pdev->dev, mp->clk_config);
mp->num_clk = 0;
@@ -1120,10 +1117,6 @@ static int __maybe_unused dpu_runtime_suspend(struct device *dev)
return rc;
}

- rc = dpu_power_resource_enable(&dpu_kms->phandle, false);
- if (rc)
- DPU_ERROR("resource disable failed: %d\n", rc);
-
rc = msm_dss_enable_clk(mp->clk_config, mp->num_clk, false);
if (rc)
DPU_ERROR("clock disable failed rc:%d\n", rc);
@@ -1157,10 +1150,6 @@ static int __maybe_unused dpu_runtime_resume(struct device *dev)
drm_for_each_crtc(crtc, ddev)
dpu_crtc_runtime_resume(crtc);

- rc = dpu_power_resource_enable(&dpu_kms->phandle, true);
- if (rc)
- DPU_ERROR("resource enable failed: %d\n", rc);
-
return rc;
}

diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.h b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.h
index 4e5acacb3065..59e18e2d3c59 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.h
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.h
@@ -31,7 +31,6 @@
#include "dpu_hw_top.h"
#include "dpu_io_util.h"
#include "dpu_rm.h"
-#include "dpu_power_handle.h"
#include "dpu_irq.h"
#include "dpu_core_perf.h"

@@ -114,8 +113,6 @@ struct dpu_kms {
int core_rev;
struct dpu_mdss_cfg *catalog;

- struct dpu_power_handle phandle;
-
/* directory entry for debugfs */
struct dentry *debugfs_root;
struct dentry *debugfs_danger;
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_power_handle.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_power_handle.c
deleted file mode 100644
index 8e64f0a52147..000000000000
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_power_handle.c
+++ /dev/null
@@ -1,136 +0,0 @@
-/* Copyright (c) 2014-2018, The Linux Foundation. All rights reserved.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 and
- * only version 2 as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- */
-
-#define pr_fmt(fmt) "[drm:%s:%d]: " fmt, __func__, __LINE__
-
-#include <linux/kernel.h>
-#include <linux/of.h>
-#include <linux/string.h>
-#include <linux/of_address.h>
-#include <linux/slab.h>
-#include <linux/mutex.h>
-#include <linux/of_platform.h>
-
-#include "dpu_power_handle.h"
-#include "dpu_trace.h"
-
-static void dpu_power_event_trigger_locked(struct dpu_power_handle *phandle,
- u32 event_type)
-{
- struct dpu_power_event *event;
-
- list_for_each_entry(event, &phandle->event_list, list) {
- if (event->event_type & event_type)
- event->cb_fnc(event_type, event->usr);
- }
-}
-
-void dpu_power_resource_init(struct platform_device *pdev,
- struct dpu_power_handle *phandle)
-{
- phandle->dev = &pdev->dev;
-
- INIT_LIST_HEAD(&phandle->event_list);
-
- mutex_init(&phandle->phandle_lock);
-}
-
-void dpu_power_resource_deinit(struct platform_device *pdev,
- struct dpu_power_handle *phandle)
-{
- struct dpu_power_event *curr_event, *next_event;
-
- if (!phandle || !pdev) {
- pr_err("invalid input param\n");
- return;
- }
-
- mutex_lock(&phandle->phandle_lock);
- list_for_each_entry_safe(curr_event, next_event,
- &phandle->event_list, list) {
- pr_err("event:%d, client:%s still registered\n",
- curr_event->event_type,
- curr_event->client_name);
- curr_event->active = false;
- list_del(&curr_event->list);
- }
- mutex_unlock(&phandle->phandle_lock);
-}
-
-int dpu_power_resource_enable(struct dpu_power_handle *phandle, bool enable)
-{
- u32 event_type;
-
- if (!phandle) {
- pr_err("invalid input argument\n");
- return -EINVAL;
- }
-
- mutex_lock(&phandle->phandle_lock);
-
- event_type = enable ? DPU_POWER_EVENT_ENABLE : DPU_POWER_EVENT_DISABLE;
-
- dpu_power_event_trigger_locked(phandle, event_type);
-
- mutex_unlock(&phandle->phandle_lock);
- return 0;
-}
-
-struct dpu_power_event *dpu_power_handle_register_event(
- struct dpu_power_handle *phandle,
- u32 event_type, void (*cb_fnc)(u32 event_type, void *usr),
- void *usr, char *client_name)
-{
- struct dpu_power_event *event;
-
- if (!phandle) {
- pr_err("invalid power handle\n");
- return ERR_PTR(-EINVAL);
- } else if (!cb_fnc || !event_type) {
- pr_err("no callback fnc or event type\n");
- return ERR_PTR(-EINVAL);
- }
-
- event = kzalloc(sizeof(struct dpu_power_event), GFP_KERNEL);
- if (!event)
- return ERR_PTR(-ENOMEM);
-
- event->event_type = event_type;
- event->cb_fnc = cb_fnc;
- event->usr = usr;
- strlcpy(event->client_name, client_name, MAX_CLIENT_NAME_LEN);
- event->active = true;
-
- mutex_lock(&phandle->phandle_lock);
- list_add(&event->list, &phandle->event_list);
- mutex_unlock(&phandle->phandle_lock);
-
- return event;
-}
-
-void dpu_power_handle_unregister_event(
- struct dpu_power_handle *phandle,
- struct dpu_power_event *event)
-{
- if (!phandle || !event) {
- pr_err("invalid phandle or event\n");
- } else if (!event->active) {
- pr_err("power handle deinit already done\n");
- kfree(event);
- } else {
- mutex_lock(&phandle->phandle_lock);
- list_del_init(&event->list);
- mutex_unlock(&phandle->phandle_lock);
- kfree(event);
- }
-}
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_power_handle.h b/drivers/gpu/drm/msm/disp/dpu1/dpu_power_handle.h
deleted file mode 100644
index 7536624c8b20..000000000000
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_power_handle.h
+++ /dev/null
@@ -1,113 +0,0 @@
-/* Copyright (c) 2016-2018, The Linux Foundation. All rights reserved.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 and
- * only version 2 as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- */
-
-#ifndef _DPU_POWER_HANDLE_H_
-#define _DPU_POWER_HANDLE_H_
-
-#define MAX_CLIENT_NAME_LEN 128
-
-#define DPU_POWER_HANDLE_ENABLE_BUS_AB_QUOTA 0
-#define DPU_POWER_HANDLE_DISABLE_BUS_AB_QUOTA 0
-#define DPU_POWER_HANDLE_ENABLE_BUS_IB_QUOTA 1600000000
-#define DPU_POWER_HANDLE_DISABLE_BUS_IB_QUOTA 0
-
-#include "dpu_io_util.h"
-
-/* events will be triggered on power handler enable/disable */
-#define DPU_POWER_EVENT_DISABLE BIT(0)
-#define DPU_POWER_EVENT_ENABLE BIT(1)
-
-/*
- * struct dpu_power_event - local event registration structure
- * @client_name: name of the client registering
- * @cb_fnc: pointer to desired callback function
- * @usr: user pointer to pass to callback event trigger
- * @event: refer to DPU_POWER_HANDLE_EVENT_*
- * @list: list to attach event master list
- * @active: indicates the state of dpu power handle
- */
-struct dpu_power_event {
- char client_name[MAX_CLIENT_NAME_LEN];
- void (*cb_fnc)(u32 event_type, void *usr);
- void *usr;
- u32 event_type;
- struct list_head list;
- bool active;
-};
-
-/**
- * struct dpu_power_handle: power handle main struct
- * @phandle_lock: lock to synchronize the enable/disable
- * @dev: pointer to device structure
- * @usecase_ndx: current usecase index
- * @event_list: current power handle event list
- */
-struct dpu_power_handle {
- struct mutex phandle_lock;
- struct device *dev;
- u32 current_usecase_ndx;
- struct list_head event_list;
-};
-
-/**
- * dpu_power_resource_init() - initializes the dpu power handle
- * @pdev: platform device to search the power resources
- * @pdata: power handle to store the power resources
- */
-void dpu_power_resource_init(struct platform_device *pdev,
- struct dpu_power_handle *pdata);
-
-/**
- * dpu_power_resource_deinit() - release the dpu power handle
- * @pdev: platform device for power resources
- * @pdata: power handle containing the resources
- *
- * Return: error code.
- */
-void dpu_power_resource_deinit(struct platform_device *pdev,
- struct dpu_power_handle *pdata);
-
-/**
- * dpu_power_resource_enable() - enable/disable the power resources
- * @pdata: power handle containing the resources
- * @enable: boolean request for enable/disable
- *
- * Return: error code.
- */
-int dpu_power_resource_enable(struct dpu_power_handle *pdata, bool enable);
-
-/**
- * dpu_power_handle_register_event - register a callback function for an event.
- * Clients can register for multiple events with a single register.
- * Any block with access to phandle can register for the event
- * notification.
- * @phandle: power handle containing the resources
- * @event_type: event type to register; refer DPU_POWER_HANDLE_EVENT_*
- * @cb_fnc: pointer to desired callback function
- * @usr: user pointer to pass to callback on event trigger
- *
- * Return: event pointer if success, or error code otherwise
- */
-struct dpu_power_event *dpu_power_handle_register_event(
- struct dpu_power_handle *phandle,
- u32 event_type, void (*cb_fnc)(u32 event_type, void *usr),
- void *usr, char *client_name);
-/**
- * dpu_power_handle_unregister_event - unregister callback for event(s)
- * @phandle: power handle containing the resources
- * @event: event pointer returned after power handle register
- */
-void dpu_power_handle_unregister_event(struct dpu_power_handle *phandle,
- struct dpu_power_event *event);
-
-#endif /* _DPU_POWER_HANDLE_H_ */
--
Sean Paul, Software Engineer, Google / Chromium OS

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