drm/exynos/fimc: simplify and rename fimc_dst_get_buf_seq

fimc_dst_get_buf_seq returns number of buffers
so the name should be fimc_dst_get_buf_count.
Function body has been simplified.

Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>

1 files changed, 5 insertions, 9 deletions

diff --git a/drivers/gpu/drm/exynos/exynos_drm_fimc.c b/drivers/gpu/drm/exynos/exynos_drm_fimc.c
index 9860d38df6fc..831dde9034c6 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_fimc.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_fimc.c
@@ -58,7 +58,6 @@
 #define FIMC_SHFACTOR   10
 #define FIMC_BUF_STOP   1
 #define FIMC_BUF_START  2
-#define FIMC_REG_SZ             32
 #define FIMC_WIDTH_ITU_709      1280
 #define FIMC_REFRESH_MAX        60
 #define FIMC_REFRESH_MIN        12
@@ -1123,16 +1122,13 @@ static int fimc_dst_set_size(struct device *dev, int swap,
         return 0;
 }
 
-static int fimc_dst_get_buf_seq(struct fimc_context *ctx)
+static int fimc_dst_get_buf_count(struct fimc_context *ctx)
 {
-        u32 cfg, i, buf_num = 0;
-        u32 mask = 0x00000001;
+        u32 cfg, buf_num;
 
         cfg = fimc_read(ctx, EXYNOS_CIFCNTSEQ);
 
-        for (i = 0; i < FIMC_REG_SZ; i++)
-                if (cfg & (mask << i))
-                        buf_num++;
+        buf_num = hweight32(cfg);
 
         DRM_DEBUG_KMS("buf_num[%d]\n", buf_num);
 
@@ -1176,12 +1172,12 @@ static int fimc_dst_set_buf_seq(struct fimc_context *ctx, u32 buf_id,
 
         /* interrupt enable */
         if (buf_type == IPP_BUF_ENQUEUE &&
-            fimc_dst_get_buf_seq(ctx) >= FIMC_BUF_START)
+            fimc_dst_get_buf_count(ctx) >= FIMC_BUF_START)
                 fimc_mask_irq(ctx, true);
 
         /* interrupt disable */
         if (buf_type == IPP_BUF_DEQUEUE &&
-            fimc_dst_get_buf_seq(ctx) <= FIMC_BUF_STOP)
+            fimc_dst_get_buf_count(ctx) <= FIMC_BUF_STOP)
                 fimc_mask_irq(ctx, false);
 
 err_unlock: