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authorAndrzej Hajda <a.hajda@samsung.com>2012-08-14 06:13:40 -0300
committerMauro Carvalho Chehab <mchehab@redhat.com>2012-10-02 13:58:40 -0300
commit7fb89eca0f2ad21f6e77f3411cb220ed94f340df (patch)
tree8aa5f697f6c5f6cbfd85d801b61652728088197c /drivers/media/platform/s5p-mfc/s5p_mfc.c
parentf9f715a95d07d3868bb30aeb20252b6b05d35d8f (diff)
downloadlinaro-lsk-7fb89eca0f2ad21f6e77f3411cb220ed94f340df.tar.gz
[media] s5p-mfc: optimized code related to working contextes
All code setting/clearing working context bits has been moved to separate functions. set_bit/clear_bit have been replaced by non-atomic variants - variable is already guarded by spin_lock. Signed-off-by: Andrzej Hajda <a.hajda@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers/media/platform/s5p-mfc/s5p_mfc.c')
-rw-r--r--drivers/media/platform/s5p-mfc/s5p_mfc.c55
1 files changed, 39 insertions, 16 deletions
diff --git a/drivers/media/platform/s5p-mfc/s5p_mfc.c b/drivers/media/platform/s5p-mfc/s5p_mfc.c
index 776e6bc241f..4486a234053 100644
--- a/drivers/media/platform/s5p-mfc/s5p_mfc.c
+++ b/drivers/media/platform/s5p-mfc/s5p_mfc.c
@@ -41,16 +41,49 @@ module_param(debug, int, S_IRUGO | S_IWUSR);
MODULE_PARM_DESC(debug, "Debug level - higher value produces more verbose messages");
/* Helper functions for interrupt processing */
+
/* Remove from hw execution round robin */
-static void clear_work_bit(struct s5p_mfc_ctx *ctx)
+void clear_work_bit(struct s5p_mfc_ctx *ctx)
{
struct s5p_mfc_dev *dev = ctx->dev;
spin_lock(&dev->condlock);
- clear_bit(ctx->num, &dev->ctx_work_bits);
+ __clear_bit(ctx->num, &dev->ctx_work_bits);
spin_unlock(&dev->condlock);
}
+/* Add to hw execution round robin */
+void set_work_bit(struct s5p_mfc_ctx *ctx)
+{
+ struct s5p_mfc_dev *dev = ctx->dev;
+
+ spin_lock(&dev->condlock);
+ __set_bit(ctx->num, &dev->ctx_work_bits);
+ spin_unlock(&dev->condlock);
+}
+
+/* Remove from hw execution round robin */
+void clear_work_bit_irqsave(struct s5p_mfc_ctx *ctx)
+{
+ struct s5p_mfc_dev *dev = ctx->dev;
+ unsigned long flags;
+
+ spin_lock_irqsave(&dev->condlock, flags);
+ __clear_bit(ctx->num, &dev->ctx_work_bits);
+ spin_unlock_irqrestore(&dev->condlock, flags);
+}
+
+/* Add to hw execution round robin */
+void set_work_bit_irqsave(struct s5p_mfc_ctx *ctx)
+{
+ struct s5p_mfc_dev *dev = ctx->dev;
+ unsigned long flags;
+
+ spin_lock_irqsave(&dev->condlock, flags);
+ __set_bit(ctx->num, &dev->ctx_work_bits);
+ spin_unlock_irqrestore(&dev->condlock, flags);
+}
+
/* Wake up context wait_queue */
static void wake_up_ctx(struct s5p_mfc_ctx *ctx, unsigned int reason,
unsigned int err)
@@ -504,9 +537,7 @@ static void s5p_mfc_handle_init_buffers(struct s5p_mfc_ctx *ctx,
ctx->int_type = reason;
ctx->int_err = err;
ctx->int_cond = 1;
- spin_lock(&dev->condlock);
- clear_bit(ctx->num, &dev->ctx_work_bits);
- spin_unlock(&dev->condlock);
+ clear_work_bit(ctx);
if (err == 0) {
ctx->state = MFCINST_RUNNING;
if (!ctx->dpb_flush_flag) {
@@ -681,7 +712,6 @@ static int s5p_mfc_open(struct file *file)
struct s5p_mfc_dev *dev = video_drvdata(file);
struct s5p_mfc_ctx *ctx = NULL;
struct vb2_queue *q;
- unsigned long flags;
int ret = 0;
mfc_debug_enter();
@@ -714,9 +744,7 @@ static int s5p_mfc_open(struct file *file)
}
}
/* Mark context as idle */
- spin_lock_irqsave(&dev->condlock, flags);
- clear_bit(ctx->num, &dev->ctx_work_bits);
- spin_unlock_irqrestore(&dev->condlock, flags);
+ clear_work_bit_irqsave(ctx);
dev->ctx[ctx->num] = ctx;
if (s5p_mfc_get_node_type(file) == MFCNODE_DECODER) {
ctx->type = MFCINST_DECODER;
@@ -843,7 +871,6 @@ static int s5p_mfc_release(struct file *file)
{
struct s5p_mfc_ctx *ctx = fh_to_ctx(file->private_data);
struct s5p_mfc_dev *dev = ctx->dev;
- unsigned long flags;
mfc_debug_enter();
mutex_lock(&dev->mfc_mutex);
@@ -851,17 +878,13 @@ static int s5p_mfc_release(struct file *file)
vb2_queue_release(&ctx->vq_src);
vb2_queue_release(&ctx->vq_dst);
/* Mark context as idle */
- spin_lock_irqsave(&dev->condlock, flags);
- clear_bit(ctx->num, &dev->ctx_work_bits);
- spin_unlock_irqrestore(&dev->condlock, flags);
+ clear_work_bit_irqsave(ctx);
/* If instance was initialised then
* return instance and free reosurces */
if (ctx->inst_no != MFC_NO_INSTANCE_SET) {
mfc_debug(2, "Has to free instance\n");
ctx->state = MFCINST_RETURN_INST;
- spin_lock_irqsave(&dev->condlock, flags);
- set_bit(ctx->num, &dev->ctx_work_bits);
- spin_unlock_irqrestore(&dev->condlock, flags);
+ set_work_bit_irqsave(ctx);
s5p_mfc_clean_ctx_int_flags(ctx);
s5p_mfc_try_run(dev);
/* Wait until instance is returned or timeout occured */