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path: root/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_blk.c
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Diffstat (limited to 'drivers/gpu/drm/msm/disp/dpu1/dpu_hw_blk.c')
-rw-r--r--drivers/gpu/drm/msm/disp/dpu1/dpu_hw_blk.c139
1 files changed, 0 insertions, 139 deletions
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_blk.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_blk.c
deleted file mode 100644
index 819b26e660b9..000000000000
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_blk.c
+++ /dev/null
@@ -1,139 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-only
-/* Copyright (c) 2017-2018, The Linux Foundation. All rights reserved.
- */
-
-#define pr_fmt(fmt) "[drm:%s:%d] " fmt, __func__, __LINE__
-
-#include <linux/mutex.h>
-#include <linux/errno.h>
-#include <linux/slab.h>
-
-#include "dpu_hw_mdss.h"
-#include "dpu_hw_blk.h"
-
-/* Serialization lock for dpu_hw_blk_list */
-static DEFINE_MUTEX(dpu_hw_blk_lock);
-
-/* List of all hw block objects */
-static LIST_HEAD(dpu_hw_blk_list);
-
-/**
- * dpu_hw_blk_init - initialize hw block object
- * @hw_blk: pointer to hw block object
- * @type: hw block type - enum dpu_hw_blk_type
- * @id: instance id of the hw block
- * @ops: Pointer to block operations
- */
-void dpu_hw_blk_init(struct dpu_hw_blk *hw_blk, u32 type, int id,
- struct dpu_hw_blk_ops *ops)
-{
- INIT_LIST_HEAD(&hw_blk->list);
- hw_blk->type = type;
- hw_blk->id = id;
- atomic_set(&hw_blk->refcount, 0);
-
- if (ops)
- hw_blk->ops = *ops;
-
- mutex_lock(&dpu_hw_blk_lock);
- list_add(&hw_blk->list, &dpu_hw_blk_list);
- mutex_unlock(&dpu_hw_blk_lock);
-}
-
-/**
- * dpu_hw_blk_destroy - destroy hw block object.
- * @hw_blk: pointer to hw block object
- * return: none
- */
-void dpu_hw_blk_destroy(struct dpu_hw_blk *hw_blk)
-{
- if (!hw_blk) {
- pr_err("invalid parameters\n");
- return;
- }
-
- if (atomic_read(&hw_blk->refcount))
- pr_err("hw_blk:%d.%d invalid refcount\n", hw_blk->type,
- hw_blk->id);
-
- mutex_lock(&dpu_hw_blk_lock);
- list_del(&hw_blk->list);
- mutex_unlock(&dpu_hw_blk_lock);
-}
-
-/**
- * dpu_hw_blk_get - get hw_blk from free pool
- * @hw_blk: if specified, increment reference count only
- * @type: if hw_blk is not specified, allocate the next available of this type
- * @id: if specified (>= 0), allocate the given instance of the above type
- * return: pointer to hw block object
- */
-struct dpu_hw_blk *dpu_hw_blk_get(struct dpu_hw_blk *hw_blk, u32 type, int id)
-{
- struct dpu_hw_blk *curr;
- int rc, refcount;
-
- if (!hw_blk) {
- mutex_lock(&dpu_hw_blk_lock);
- list_for_each_entry(curr, &dpu_hw_blk_list, list) {
- if ((curr->type != type) ||
- (id >= 0 && curr->id != id) ||
- (id < 0 &&
- atomic_read(&curr->refcount)))
- continue;
-
- hw_blk = curr;
- break;
- }
- mutex_unlock(&dpu_hw_blk_lock);
- }
-
- if (!hw_blk) {
- pr_debug("no hw_blk:%d\n", type);
- return NULL;
- }
-
- refcount = atomic_inc_return(&hw_blk->refcount);
-
- if (refcount == 1 && hw_blk->ops.start) {
- rc = hw_blk->ops.start(hw_blk);
- if (rc) {
- pr_err("failed to start hw_blk:%d rc:%d\n", type, rc);
- goto error_start;
- }
- }
-
- pr_debug("hw_blk:%d.%d refcount:%d\n", hw_blk->type,
- hw_blk->id, refcount);
- return hw_blk;
-
-error_start:
- dpu_hw_blk_put(hw_blk);
- return ERR_PTR(rc);
-}
-
-/**
- * dpu_hw_blk_put - put hw_blk to free pool if decremented refcount is zero
- * @hw_blk: hw block to be freed
- */
-void dpu_hw_blk_put(struct dpu_hw_blk *hw_blk)
-{
- if (!hw_blk) {
- pr_err("invalid parameters\n");
- return;
- }
-
- pr_debug("hw_blk:%d.%d refcount:%d\n", hw_blk->type, hw_blk->id,
- atomic_read(&hw_blk->refcount));
-
- if (!atomic_read(&hw_blk->refcount)) {
- pr_err("hw_blk:%d.%d invalid put\n", hw_blk->type, hw_blk->id);
- return;
- }
-
- if (atomic_dec_return(&hw_blk->refcount))
- return;
-
- if (hw_blk->ops.stop)
- hw_blk->ops.stop(hw_blk);
-}