diff options
| author | Hyunwoong Kim <khw0178.kim@samsung.com> | 2010-12-29 07:08:32 -0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2011-03-21 20:31:40 -0300 |
| commit | 5bbe425e57d3ca715cfe9c98bac5f8f07a96c81a (patch) | |
| tree | fa18dbad47696c0c4910ece797e7bc8bc16fc427 /drivers/media/video/s5p-fimc | |
| parent | 65777e5c58bd3b25fcba39eddb98d8a8ce35d3be (diff) | |
[media] s5p-fimc: fix MSCTRL.FIFO_CTRL for performance enhancement
This patch fixes the value of FIFO_CTRL in MSCTRL.
Main-scaler has the value to specify a basis FIFO control of input DMA.
The description of FIFO_CTRL has been changed as below.
0 = FIFO Empty (Next burst transaction is possible when FIFO is empty)
1 = FIFO Full (Next burst transaction is possible except Full FIFO)
Value '1' is recommended to enhance the FIMC operation performance.
Reviewed-by: Jonghun Han <jonghun.han@samsung.com>
Signed-off-by: Hyunwoong Kim <khw0178.kim@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/video/s5p-fimc')
| -rw-r--r-- | drivers/media/video/s5p-fimc/fimc-reg.c | 4 | ||||
| -rw-r--r-- | drivers/media/video/s5p-fimc/regs-fimc.h | 1 |
2 files changed, 4 insertions, 1 deletions
diff --git a/drivers/media/video/s5p-fimc/fimc-reg.c b/drivers/media/video/s5p-fimc/fimc-reg.c index 8e5a0bbae580..10684aef5b2d 100644 --- a/drivers/media/video/s5p-fimc/fimc-reg.c +++ b/drivers/media/video/s5p-fimc/fimc-reg.c @@ -437,7 +437,9 @@ void fimc_hw_set_in_dma(struct fimc_ctx *ctx) | S5P_MSCTRL_C_INT_IN_MASK | S5P_MSCTRL_2P_IN_ORDER_MASK); - cfg |= S5P_MSCTRL_IN_BURST_COUNT(4) | S5P_MSCTRL_INPUT_MEMORY; + cfg |= (S5P_MSCTRL_IN_BURST_COUNT(4) + | S5P_MSCTRL_INPUT_MEMORY + | S5P_MSCTRL_FIFO_CTRL_FULL); switch (frame->fmt->color) { case S5P_FIMC_RGB565...S5P_FIMC_RGB888: diff --git a/drivers/media/video/s5p-fimc/regs-fimc.h b/drivers/media/video/s5p-fimc/regs-fimc.h index 04669a54a3c2..0fea3e635d76 100644 --- a/drivers/media/video/s5p-fimc/regs-fimc.h +++ b/drivers/media/video/s5p-fimc/regs-fimc.h @@ -226,6 +226,7 @@ #define S5P_MSCTRL_FLIP_X_MIRROR (1 << 13) #define S5P_MSCTRL_FLIP_Y_MIRROR (2 << 13) #define S5P_MSCTRL_FLIP_180 (3 << 13) +#define S5P_MSCTRL_FIFO_CTRL_FULL (1 << 12) #define S5P_MSCTRL_ORDER422_SHIFT 4 #define S5P_MSCTRL_ORDER422_YCBYCR (0 << 4) #define S5P_MSCTRL_ORDER422_CBYCRY (1 << 4) |