exynos_drm_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>

diff --git a/drivers/gpu/drm/exynos/exynos_drm_fimc.c b/drivers/gpu/drm/exynos/exynos_drm_fimc.c
index d6e7bf4..ee8c821 100644 (file)
--- 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
@@ -1128,16 +1127,13 @@ 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("%s:buf_num[%d]\n", __func__, buf_num);
 
@@ -1182,12 +1178,12 @@ 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, false, 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, false, true);
 
 err_unlock: