#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)
+void dpu_hw_blk_init(struct dpu_hw_blk *hw_blk, u32 type, int id)
{
- 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);
}
/**
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);
}
#include <linux/types.h>
#include <linux/list.h>
-#include <linux/atomic.h>
struct dpu_hw_blk;
-/**
- * struct dpu_hw_blk_ops - common hardware block operations
- * @start: start operation on first get
- * @stop: stop operation on last put
- */
-struct dpu_hw_blk_ops {
- int (*start)(struct dpu_hw_blk *);
- void (*stop)(struct dpu_hw_blk *);
-};
/**
* struct dpu_hw_blk - definition of hardware block object
* @refcount: reference/usage count
*/
struct dpu_hw_blk {
- struct list_head list;
u32 type;
int id;
- atomic_t refcount;
- struct dpu_hw_blk_ops ops;
};
-void dpu_hw_blk_init(struct dpu_hw_blk *hw_blk, u32 type, int id,
- struct dpu_hw_blk_ops *ops);
+void dpu_hw_blk_init(struct dpu_hw_blk *hw_blk, u32 type, int id);
void dpu_hw_blk_destroy(struct dpu_hw_blk *hw_blk);
-
-struct dpu_hw_blk *dpu_hw_blk_get(struct dpu_hw_blk *hw_blk, u32 type, int id);
-void dpu_hw_blk_put(struct dpu_hw_blk *hw_blk);
#endif /*_DPU_HW_BLK_H */
ops->set_active_pipes = dpu_hw_ctl_set_fetch_pipe_active;
};
-static struct dpu_hw_blk_ops dpu_hw_ops;
-
struct dpu_hw_ctl *dpu_hw_ctl_init(enum dpu_ctl idx,
void __iomem *addr,
const struct dpu_mdss_cfg *m)
c->mixer_count = m->mixer_count;
c->mixer_hw_caps = m->mixer;
- dpu_hw_blk_init(&c->base, DPU_HW_BLK_CTL, idx, &dpu_hw_ops);
+ dpu_hw_blk_init(&c->base, DPU_HW_BLK_CTL, idx);
return c;
}
return ERR_PTR(-EINVAL);
}
-static struct dpu_hw_blk_ops dpu_hw_ops;
-
struct dpu_hw_dspp *dpu_hw_dspp_init(enum dpu_dspp idx,
void __iomem *addr,
const struct dpu_mdss_cfg *m)
c->cap = cfg;
_setup_dspp_ops(c, c->cap->features);
- dpu_hw_blk_init(&c->base, DPU_HW_BLK_DSPP, idx, &dpu_hw_ops);
+ dpu_hw_blk_init(&c->base, DPU_HW_BLK_DSPP, idx);
return c;
}
ops->bind_pingpong_blk = dpu_hw_intf_bind_pingpong_blk;
}
-static struct dpu_hw_blk_ops dpu_hw_ops;
-
struct dpu_hw_intf *dpu_hw_intf_init(enum dpu_intf idx,
void __iomem *addr,
const struct dpu_mdss_cfg *m)
c->mdss = m;
_setup_intf_ops(&c->ops, c->cap->features);
- dpu_hw_blk_init(&c->base, DPU_HW_BLK_INTF, idx, &dpu_hw_ops);
+ dpu_hw_blk_init(&c->base, DPU_HW_BLK_INTF, idx);
return c;
}
ops->setup_border_color = dpu_hw_lm_setup_border_color;
}
-static struct dpu_hw_blk_ops dpu_hw_ops;
-
struct dpu_hw_mixer *dpu_hw_lm_init(enum dpu_lm idx,
void __iomem *addr,
const struct dpu_mdss_cfg *m)
c->cap = cfg;
_setup_mixer_ops(m, &c->ops, c->cap->features);
- dpu_hw_blk_init(&c->base, DPU_HW_BLK_LM, idx, &dpu_hw_ops);
+ dpu_hw_blk_init(&c->base, DPU_HW_BLK_LM, idx);
return c;
}
c->ops.setup_3d_mode = dpu_hw_merge_3d_setup_3d_mode;
};
-static struct dpu_hw_blk_ops dpu_hw_ops;
-
struct dpu_hw_merge_3d *dpu_hw_merge_3d_init(enum dpu_merge_3d idx,
void __iomem *addr,
const struct dpu_mdss_cfg *m)
c->caps = cfg;
_setup_merge_3d_ops(c, c->caps->features);
- dpu_hw_blk_init(&c->base, DPU_HW_BLK_MERGE_3D, idx, &dpu_hw_ops);
+ dpu_hw_blk_init(&c->base, DPU_HW_BLK_MERGE_3D, idx);
return c;
}
c->ops.setup_dither = dpu_hw_pp_setup_dither;
};
-static struct dpu_hw_blk_ops dpu_hw_ops;
-
struct dpu_hw_pingpong *dpu_hw_pingpong_init(enum dpu_pingpong idx,
void __iomem *addr,
const struct dpu_mdss_cfg *m)
c->caps = cfg;
_setup_pingpong_ops(c, c->caps->features);
- dpu_hw_blk_init(&c->base, DPU_HW_BLK_PINGPONG, idx, &dpu_hw_ops);
+ dpu_hw_blk_init(&c->base, DPU_HW_BLK_PINGPONG, idx);
return c;
}
return ERR_PTR(-ENOMEM);
}
-static struct dpu_hw_blk_ops dpu_hw_ops;
-
struct dpu_hw_pipe *dpu_hw_sspp_init(enum dpu_sspp idx,
void __iomem *addr, struct dpu_mdss_cfg *catalog,
bool is_virtual_pipe)
hw_pipe->cap = cfg;
_setup_layer_ops(hw_pipe, hw_pipe->cap->features);
- dpu_hw_blk_init(&hw_pipe->base, DPU_HW_BLK_SSPP, idx, &dpu_hw_ops);
+ dpu_hw_blk_init(&hw_pipe->base, DPU_HW_BLK_SSPP, idx);
return hw_pipe;
}
return ERR_PTR(-EINVAL);
}
-static struct dpu_hw_blk_ops dpu_hw_ops;
-
struct dpu_hw_mdp *dpu_hw_mdptop_init(enum dpu_mdp idx,
void __iomem *addr,
const struct dpu_mdss_cfg *m)
mdp->caps = cfg;
_setup_mdp_ops(&mdp->ops, mdp->caps->features);
- dpu_hw_blk_init(&mdp->base, DPU_HW_BLK_TOP, idx, &dpu_hw_ops);
+ dpu_hw_blk_init(&mdp->base, DPU_HW_BLK_TOP, idx);
return mdp;
}
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