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[media] s5p-fimc: Fix buffer dequeue order issue 

When requested more than 2 buffers the buffer dequeue order was wrong
due to erroneous updating FIMC registers in every interrupt handler
call. This also fixes regression of resetting the output DMA buffer
pointer at wrong time, when some buffers are already queued in hardware.
The hardware is reset in the start_streaming callback in order to align
the H/W state with the software output buffer pointer (buf_index).

Additionally a simple write to S5P_CISCCTRL register is replaced with
a read/modification/write to make sure the scaler is not being disabled
in fimc_hw_set_scaler().

Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Sylwester Nawrocki 2011-10-05 14:20:45 -03:00 committed by Mauro Carvalho Chehab
parent 7aa9f1844a
commit 2c1bb62e21
3 changed files with 18 additions and 10 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

9
drivers/media/video/s5p-fimc/fimc-capture.c
View File

@ -98,6 +98,10 @@ static int fimc_capture_state_cleanup(struct fimc_dev *fimc, bool suspend)
vb2_buffer_done(&buf->vb, VB2_BUF_STATE_ERROR);
}
set_bit(ST_CAPT_SUSPENDED, &fimc->state);
fimc_hw_reset(fimc);
cap->buf_index = 0;
spin_unlock_irqrestore(&fimc->slock, flags);
if (streaming)
@ -137,7 +141,7 @@ int fimc_capture_config_update(struct fimc_ctx *ctx)
struct fimc_dev *fimc = ctx->fimc_dev;
int ret;
if (test_bit(ST_CAPT_APPLY_CFG, &fimc->state))
if (!test_bit(ST_CAPT_APPLY_CFG, &fimc->state))
return 0;
spin_lock(&ctx->slock);
@ -150,7 +154,7 @@ int fimc_capture_config_update(struct fimc_ctx *ctx)
fimc_hw_set_rotation(ctx);
fimc_prepare_dma_offset(ctx, &ctx->d_frame);
fimc_hw_set_out_dma(ctx);
set_bit(ST_CAPT_APPLY_CFG, &fimc->state);
clear_bit(ST_CAPT_APPLY_CFG, &fimc->state);
}
spin_unlock(&ctx->slock);
return ret;
@ -164,7 +168,6 @@ static int start_streaming(struct vb2_queue *q, unsigned int count)
int min_bufs;
int ret;
fimc_hw_reset(fimc);
vid_cap->frame_count = 0;
ret = fimc_init_capture(fimc);

4
drivers/media/video/s5p-fimc/fimc-core.c
View File

@ -1706,8 +1706,6 @@ static int fimc_runtime_resume(struct device *dev)
/* Enable clocks and perform basic initalization */
clk_enable(fimc->clock[CLK_GATE]);
fimc_hw_reset(fimc);
if (fimc->variant->out_buf_count > 4)
fimc_hw_set_dma_seq(fimc, 0xF);
/* Resume the capture or mem-to-mem device */
if (fimc_capture_busy(fimc))
@ -1749,8 +1747,6 @@ static int fimc_resume(struct device *dev)
return 0;
}
fimc_hw_reset(fimc);
if (fimc->variant->out_buf_count > 4)
fimc_hw_set_dma_seq(fimc, 0xF);
spin_unlock_irqrestore(&fimc->slock, flags);
if (fimc_capture_busy(fimc))

15
drivers/media/video/s5p-fimc/fimc-reg.c
View File

@ -35,6 +35,9 @@ void fimc_hw_reset(struct fimc_dev *dev)
cfg = readl(dev->regs + S5P_CIGCTRL);
cfg &= ~S5P_CIGCTRL_SWRST;
writel(cfg, dev->regs + S5P_CIGCTRL);
if (dev->variant->out_buf_count > 4)
fimc_hw_set_dma_seq(dev, 0xF);
}
static u32 fimc_hw_get_in_flip(struct fimc_ctx *ctx)
@ -251,7 +254,14 @@ static void fimc_hw_set_scaler(struct fimc_ctx *ctx)
struct fimc_scaler *sc = &ctx->scaler;
struct fimc_frame *src_frame = &ctx->s_frame;
struct fimc_frame *dst_frame = &ctx->d_frame;
u32 cfg = 0;
u32 cfg = readl(dev->regs + S5P_CISCCTRL);
cfg &= ~(S5P_CISCCTRL_CSCR2Y_WIDE | S5P_CISCCTRL_CSCY2R_WIDE |
S5P_CISCCTRL_SCALEUP_H | S5P_CISCCTRL_SCALEUP_V |
S5P_CISCCTRL_SCALERBYPASS | S5P_CISCCTRL_ONE2ONE |
S5P_CISCCTRL_INRGB_FMT_MASK | S5P_CISCCTRL_OUTRGB_FMT_MASK |
S5P_CISCCTRL_INTERLACE | S5P_CISCCTRL_RGB_EXT);
if (!(ctx->flags & FIMC_COLOR_RANGE_NARROW))
cfg |= (S5P_CISCCTRL_CSCR2Y_WIDE | S5P_CISCCTRL_CSCY2R_WIDE);
@ -308,9 +318,9 @@ void fimc_hw_set_mainscaler(struct fimc_ctx *ctx)
fimc_hw_set_scaler(ctx);
cfg = readl(dev->regs + S5P_CISCCTRL);
cfg &= ~(S5P_CISCCTRL_MHRATIO_MASK | S5P_CISCCTRL_MVRATIO_MASK);
if (variant->has_mainscaler_ext) {
cfg &= ~(S5P_CISCCTRL_MHRATIO_MASK | S5P_CISCCTRL_MVRATIO_MASK);
cfg |= S5P_CISCCTRL_MHRATIO_EXT(sc->main_hratio);
cfg |= S5P_CISCCTRL_MVRATIO_EXT(sc->main_vratio);
writel(cfg, dev->regs + S5P_CISCCTRL);
@ -323,7 +333,6 @@ void fimc_hw_set_mainscaler(struct fimc_ctx *ctx)
cfg |= S5P_CIEXTEN_MVRATIO_EXT(sc->main_vratio);
writel(cfg, dev->regs + S5P_CIEXTEN);
} else {
cfg &= ~(S5P_CISCCTRL_MHRATIO_MASK | S5P_CISCCTRL_MVRATIO_MASK);
cfg |= S5P_CISCCTRL_MHRATIO(sc->main_hratio);
cfg |= S5P_CISCCTRL_MVRATIO(sc->main_vratio);
writel(cfg, dev->regs + S5P_CISCCTRL);