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drm/msm: dpu: Remove dpu_power_client 

There's only one client -- core, and it's only used for runtime pm which
is already refcounted.

Changes in v2:
- None

Reviewed-by: Jeykumar Sankaran <jsanka@codeaurora.org>
Signed-off-by: Sean Paul <seanpaul@chromium.org>
Signed-off-by: Rob Clark <robdclark@gmail.com>
This commit is contained in:
Sean Paul 2018-11-16 13:42:13 -05:00 committed by Rob Clark
parent d05994dfa9
commit 88447b9b58
4 changed files with 6 additions and 199 deletions
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22
drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c
View File

@ -677,11 +677,6 @@ static void _dpu_kms_hw_destroy(struct dpu_kms *dpu_kms)
dpu_hw_catalog_deinit(dpu_kms->catalog);
dpu_kms->catalog = NULL;
if (dpu_kms->core_client)
dpu_power_client_destroy(&dpu_kms->phandle,
dpu_kms->core_client);
dpu_kms->core_client = NULL;
if (dpu_kms->vbif[VBIF_NRT])
devm_iounmap(&dpu_kms->pdev->dev, dpu_kms->vbif[VBIF_NRT]);
dpu_kms->vbif[VBIF_NRT] = NULL;
@ -917,17 +912,6 @@ static int dpu_kms_hw_init(struct msm_kms *kms)
dpu_kms->reg_dma_len = dpu_iomap_size(dpu_kms->pdev, "regdma");
}
dpu_kms->core_client = dpu_power_client_create(&dpu_kms->phandle,
"core");
if (IS_ERR_OR_NULL(dpu_kms->core_client)) {
rc = PTR_ERR(dpu_kms->core_client);
if (!dpu_kms->core_client)
rc = -EINVAL;
DPU_ERROR("dpu power client create failed: %d\n", rc);
dpu_kms->core_client = NULL;
goto error;
}
pm_runtime_get_sync(&dpu_kms->pdev->dev);
_dpu_kms_core_hw_rev_init(dpu_kms);
@ -1161,8 +1145,7 @@ static int __maybe_unused dpu_runtime_suspend(struct device *dev)
return rc;
}
rc = dpu_power_resource_enable(&dpu_kms->phandle,
dpu_kms->core_client, false);
rc = dpu_power_resource_enable(&dpu_kms->phandle, false);
if (rc)
DPU_ERROR("resource disable failed: %d\n", rc);
@ -1193,8 +1176,7 @@ static int __maybe_unused dpu_runtime_resume(struct device *dev)
return rc;
}
rc = dpu_power_resource_enable(&dpu_kms->phandle,
dpu_kms->core_client, true);
rc = dpu_power_resource_enable(&dpu_kms->phandle, true);
if (rc)
DPU_ERROR("resource enable failed: %d\n", rc);

1
drivers/gpu/drm/msm/disp/dpu1/dpu_kms.h
View File

@ -114,7 +114,6 @@ struct dpu_kms {
struct dpu_mdss_cfg *catalog;
struct dpu_power_handle phandle;
struct dpu_power_client *core_client;
struct dpu_power_event *power_event;
/* directory entry for debugfs */

96
drivers/gpu/drm/msm/disp/dpu1/dpu_power_handle.c
View File

@ -35,59 +35,11 @@ static void dpu_power_event_trigger_locked(struct dpu_power_handle *phandle,
}
}
struct dpu_power_client *dpu_power_client_create(
struct dpu_power_handle *phandle, char *client_name)
{
struct dpu_power_client *client;
static u32 id;
if (!client_name || !phandle) {
pr_err("client name is null or invalid power data\n");
return ERR_PTR(-EINVAL);
}
client = kzalloc(sizeof(struct dpu_power_client), GFP_KERNEL);
if (!client)
return ERR_PTR(-ENOMEM);
mutex_lock(&phandle->phandle_lock);
strlcpy(client->name, client_name, MAX_CLIENT_NAME_LEN);
client->usecase_ndx = VOTE_INDEX_DISABLE;
client->id = id;
client->active = true;
pr_debug("client %s created:%pK id :%d\n", client_name,
client, id);
id++;
list_add(&client->list, &phandle->power_client_clist);
mutex_unlock(&phandle->phandle_lock);
return client;
}
void dpu_power_client_destroy(struct dpu_power_handle *phandle,
struct dpu_power_client *client)
{
if (!client || !phandle) {
pr_err("reg bus vote: invalid client handle\n");
} else if (!client->active) {
pr_err("dpu power deinit already done\n");
kfree(client);
} else {
pr_debug("bus vote client %s destroyed:%pK id:%u\n",
client->name, client, client->id);
mutex_lock(&phandle->phandle_lock);
list_del_init(&client->list);
mutex_unlock(&phandle->phandle_lock);
kfree(client);
}
}
void dpu_power_resource_init(struct platform_device *pdev,
struct dpu_power_handle *phandle)
{
phandle->dev = &pdev->dev;
INIT_LIST_HEAD(&phandle->power_client_clist);
INIT_LIST_HEAD(&phandle->event_list);
mutex_init(&phandle->phandle_lock);
@ -96,7 +48,6 @@ void dpu_power_resource_init(struct platform_device *pdev,
void dpu_power_resource_deinit(struct platform_device *pdev,
struct dpu_power_handle *phandle)
{
struct dpu_power_client *curr_client, *next_client;
struct dpu_power_event *curr_event, *next_event;
if (!phandle || !pdev) {
@ -105,15 +56,6 @@ void dpu_power_resource_deinit(struct platform_device *pdev,
}
mutex_lock(&phandle->phandle_lock);
list_for_each_entry_safe(curr_client, next_client,
&phandle->power_client_clist, list) {
pr_err("client:%s-%d still registered with refcount:%d\n",
curr_client->name, curr_client->id,
curr_client->refcount);
curr_client->active = false;
list_del(&curr_client->list);
}
list_for_each_entry_safe(curr_event, next_event,
&phandle->event_list, list) {
pr_err("event:%d, client:%s still registered\n",
@ -125,53 +67,21 @@ void dpu_power_resource_deinit(struct platform_device *pdev,
mutex_unlock(&phandle->phandle_lock);
}
int dpu_power_resource_enable(struct dpu_power_handle *phandle,
struct dpu_power_client *pclient, bool enable)
int dpu_power_resource_enable(struct dpu_power_handle *phandle, bool enable)
{
bool changed = false;
u32 max_usecase_ndx = VOTE_INDEX_DISABLE, prev_usecase_ndx;
struct dpu_power_client *client;
u32 event_type;
if (!phandle || !pclient) {
if (!phandle) {
pr_err("invalid input argument\n");
return -EINVAL;
}
mutex_lock(&phandle->phandle_lock);
if (enable)
pclient->refcount++;
else if (pclient->refcount)
pclient->refcount--;
if (pclient->refcount)
pclient->usecase_ndx = VOTE_INDEX_LOW;
else
pclient->usecase_ndx = VOTE_INDEX_DISABLE;
list_for_each_entry(client, &phandle->power_client_clist, list) {
if (client->usecase_ndx < VOTE_INDEX_MAX &&
client->usecase_ndx > max_usecase_ndx)
max_usecase_ndx = client->usecase_ndx;
}
if (phandle->current_usecase_ndx != max_usecase_ndx) {
changed = true;
prev_usecase_ndx = phandle->current_usecase_ndx;
phandle->current_usecase_ndx = max_usecase_ndx;
}
pr_debug("%pS: changed=%d current idx=%d request client %s id:%u enable:%d refcount:%d\n",
__builtin_return_address(0), changed, max_usecase_ndx,
pclient->name, pclient->id, enable, pclient->refcount);
if (!changed)
goto end;
event_type = enable ? DPU_POWER_EVENT_ENABLE : DPU_POWER_EVENT_DISABLE;
dpu_power_event_trigger_locked(phandle, event_type);
end:
mutex_unlock(&phandle->phandle_lock);
return 0;
}

86
drivers/gpu/drm/msm/disp/dpu1/dpu_power_handle.h
View File

@ -27,30 +27,6 @@
#define DPU_POWER_EVENT_DISABLE BIT(0)
#define DPU_POWER_EVENT_ENABLE BIT(1)
/**
* mdss_bus_vote_type: register bus vote type
* VOTE_INDEX_DISABLE: removes the client vote
* VOTE_INDEX_LOW: keeps the lowest vote for register bus
* VOTE_INDEX_MAX: invalid
*/
enum mdss_bus_vote_type {
VOTE_INDEX_DISABLE,
VOTE_INDEX_LOW,
VOTE_INDEX_MAX,
};
/**
* enum dpu_power_handle_data_bus_client - type of axi bus clients
* @DPU_POWER_HANDLE_DATA_BUS_CLIENT_RT: core real-time bus client
* @DPU_POWER_HANDLE_DATA_BUS_CLIENT_NRT: core non-real-time bus client
* @DPU_POWER_HANDLE_DATA_BUS_CLIENT_MAX: maximum number of bus client type
*/
enum dpu_power_handle_data_bus_client {
DPU_POWER_HANDLE_DATA_BUS_CLIENT_RT,
DPU_POWER_HANDLE_DATA_BUS_CLIENT_NRT,
DPU_POWER_HANDLE_DATA_BUS_CLIENT_MAX
};
/**
* enum DPU_POWER_HANDLE_DBUS_ID - data bus identifier
* @DPU_POWER_HANDLE_DBUS_ID_MNOC: DPU/MNOC data bus
@ -64,31 +40,6 @@ enum DPU_POWER_HANDLE_DBUS_ID {
DPU_POWER_HANDLE_DBUS_ID_MAX,
};
/**
* struct dpu_power_client: stores the power client for dpu driver
* @name: name of the client
* @usecase_ndx: current regs bus vote type
* @refcount: current refcount if multiple modules are using same
* same client for enable/disable. Power module will
* aggregate the refcount and vote accordingly for this
* client.
* @id: assigned during create. helps for debugging.
* @list: list to attach power handle master list
* @ab: arbitrated bandwidth for each bus client
* @ib: instantaneous bandwidth for each bus client
* @active: inidcates the state of dpu power handle
*/
struct dpu_power_client {
char name[MAX_CLIENT_NAME_LEN];
short usecase_ndx;
short refcount;
u32 id;
struct list_head list;
u64 ab[DPU_POWER_HANDLE_DATA_BUS_CLIENT_MAX];
u64 ib[DPU_POWER_HANDLE_DATA_BUS_CLIENT_MAX];
bool active;
};
/*
* struct dpu_power_event - local event registration structure
* @client_name: name of the client registering
@ -109,14 +60,12 @@ struct dpu_power_event {
/**
* struct dpu_power_handle: power handle main struct
* @client_clist: master list to store all clients
* @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 list_head power_client_clist;
struct mutex phandle_lock;
struct device *dev;
u32 current_usecase_ndx;
@ -141,47 +90,14 @@ void dpu_power_resource_init(struct platform_device *pdev,
void dpu_power_resource_deinit(struct platform_device *pdev,
struct dpu_power_handle *pdata);
/**
* dpu_power_client_create() - create the client on power handle
* @pdata: power handle containing the resources
* @client_name: new client name for registration
*
* Return: error code.
*/
struct dpu_power_client *dpu_power_client_create(struct dpu_power_handle *pdata,
char *client_name);
/**
* dpu_power_client_destroy() - destroy the client on power handle
* @pdata: power handle containing the resources
* @client_name: new client name for registration
*
* Return: none
*/
void dpu_power_client_destroy(struct dpu_power_handle *phandle,
struct dpu_power_client *client);
/**
* dpu_power_resource_enable() - enable/disable the power resources
* @pdata: power handle containing the resources
* @client: client information to enable/disable its vote
* @enable: boolean request for enable/disable
*
* Return: error code.
*/
int dpu_power_resource_enable(struct dpu_power_handle *pdata,
struct dpu_power_client *pclient, bool enable);
/**
* dpu_power_data_bus_bandwidth_ctrl() - control data bus bandwidth enable
* @phandle: power handle containing the resources
* @client: client information to bandwidth control
* @enable: true to enable bandwidth for data base
*
* Return: none
*/
void dpu_power_data_bus_bandwidth_ctrl(struct dpu_power_handle *phandle,
struct dpu_power_client *pclient, int enable);
int dpu_power_resource_enable(struct dpu_power_handle *pdata, bool enable);
/**
* dpu_power_handle_register_event - register a callback function for an event.