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[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>
This commit is contained in:
Hyunwoong Kim 2010-12-29 07:08:32 -03:00 committed by Mauro Carvalho Chehab
parent 65777e5c58
commit 5bbe425e57
2 changed files with 4 additions and 1 deletions
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4
drivers/media/video/s5p-fimc/fimc-reg.c
View File

@ -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:

1
drivers/media/video/s5p-fimc/regs-fimc.h
View File

@ -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)