[PATCH 02/21] drm/msm/dpu: remove unused dpu_hw_blk features
Dmitry Baryshkov
dmitry.baryshkov at linaro.org
Wed Mar 24 15:00:05 UTC 2021
Remove all unused dpu_hw_blk features and functions:
- dpu_hw_blk_get()/_put() and respective refcounting,
- global list of all dpu_hw_blk instances,
- dpu_hw_blk_ops and empty implementation inside each hw_blk subdriver.
This leaves dpu_hw_blk as a placeholder with just type and index.
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov at linaro.org>
---
drivers/gpu/drm/msm/disp/dpu1/dpu_hw_blk.c | 104 +-----------------
drivers/gpu/drm/msm/disp/dpu1/dpu_hw_blk.h | 19 +---
drivers/gpu/drm/msm/disp/dpu1/dpu_hw_ctl.c | 4 +-
drivers/gpu/drm/msm/disp/dpu1/dpu_hw_dspp.c | 4 +-
drivers/gpu/drm/msm/disp/dpu1/dpu_hw_intf.c | 4 +-
drivers/gpu/drm/msm/disp/dpu1/dpu_hw_lm.c | 4 +-
.../gpu/drm/msm/disp/dpu1/dpu_hw_merge3d.c | 4 +-
.../gpu/drm/msm/disp/dpu1/dpu_hw_pingpong.c | 4 +-
drivers/gpu/drm/msm/disp/dpu1/dpu_hw_sspp.c | 4 +-
drivers/gpu/drm/msm/disp/dpu1/dpu_hw_top.c | 4 +-
10 files changed, 10 insertions(+), 145 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
index 819b26e660b9..abad043f35f5 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_blk.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_blk.c
@@ -11,33 +11,16 @@
#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);
}
/**
@@ -51,89 +34,4 @@ void dpu_hw_blk_destroy(struct dpu_hw_blk *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);
}
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_blk.h b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_blk.h
index 2bf737f8dd1b..fb3be9a36a50 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_blk.h
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_blk.h
@@ -7,19 +7,9 @@
#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
@@ -29,17 +19,10 @@ struct dpu_hw_blk_ops {
* @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 */
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_ctl.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_ctl.c
index 8981cfa9dbc3..ad60d59d3106 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_ctl.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_ctl.c
@@ -560,8 +560,6 @@ static void _setup_ctl_ops(struct dpu_hw_ctl_ops *ops,
ops->get_bitmask_dspp = dpu_hw_ctl_get_bitmask_dspp;
};
-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)
@@ -586,7 +584,7 @@ struct dpu_hw_ctl *dpu_hw_ctl_init(enum dpu_ctl idx,
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;
}
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_dspp.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_dspp.c
index e42f901a7de5..d2f1045a736a 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_dspp.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_dspp.c
@@ -85,8 +85,6 @@ static const struct dpu_dspp_cfg *_dspp_offset(enum dpu_dspp dspp,
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)
@@ -112,7 +110,7 @@ struct dpu_hw_dspp *dpu_hw_dspp_init(enum dpu_dspp idx,
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;
}
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_intf.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_intf.c
index 6f0f54588124..db78842e3999 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_intf.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_intf.c
@@ -289,8 +289,6 @@ static void _setup_intf_ops(struct dpu_hw_intf_ops *ops,
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)
@@ -317,7 +315,7 @@ struct dpu_hw_intf *dpu_hw_intf_init(enum dpu_intf idx,
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;
}
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_lm.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_lm.c
index 6ac0b5a0e057..554bb881de3a 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_lm.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_lm.c
@@ -160,8 +160,6 @@ static void _setup_mixer_ops(const struct dpu_mdss_cfg *m,
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)
@@ -184,7 +182,7 @@ struct dpu_hw_mixer *dpu_hw_lm_init(enum dpu_lm idx,
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;
}
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_merge3d.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_merge3d.c
index 720813e5a8ae..863229dd0140 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_merge3d.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_merge3d.c
@@ -58,8 +58,6 @@ static void _setup_merge_3d_ops(struct dpu_hw_merge_3d *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)
@@ -81,7 +79,7 @@ struct dpu_hw_merge_3d *dpu_hw_merge_3d_init(enum dpu_merge_3d idx,
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;
}
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_pingpong.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_pingpong.c
index 245a7a62b5c6..334d5b28f533 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_pingpong.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_pingpong.c
@@ -261,8 +261,6 @@ static void _setup_pingpong_ops(struct dpu_hw_pingpong *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)
@@ -284,7 +282,7 @@ struct dpu_hw_pingpong *dpu_hw_pingpong_init(enum dpu_pingpong idx,
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;
}
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_sspp.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_sspp.c
index 34d81aa16041..ceb2488ea270 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_sspp.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_sspp.c
@@ -706,8 +706,6 @@ static const struct dpu_sspp_cfg *_sspp_offset(enum dpu_sspp sspp,
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)
@@ -735,7 +733,7 @@ struct dpu_hw_pipe *dpu_hw_sspp_init(enum dpu_sspp idx,
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;
}
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_top.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_top.c
index 01b76766a9a8..5d2c33ec1de7 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_top.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_top.c
@@ -295,8 +295,6 @@ static const struct dpu_mdp_cfg *_top_offset(enum dpu_mdp mdp,
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)
@@ -324,7 +322,7 @@ struct dpu_hw_mdp *dpu_hw_mdptop_init(enum dpu_mdp idx,
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;
}
--
2.30.2
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