From 2c1bb62e217f4f2eb6fa9734dcb331bc09c7768e Mon Sep 17 00:00:00 2001 From: Sylwester Nawrocki Date: Wed, 5 Oct 2011 14:20:45 -0300 Subject: [PATCH] [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 Signed-off-by: Kyungmin Park Signed-off-by: Mauro Carvalho Chehab --- drivers/media/video/s5p-fimc/fimc-capture.c | 9 ++++++--- drivers/media/video/s5p-fimc/fimc-core.c | 4 ---- drivers/media/video/s5p-fimc/fimc-reg.c | 15 ++++++++++++--- 3 files changed, 18 insertions(+), 10 deletions(-) diff --git a/drivers/media/video/s5p-fimc/fimc-capture.c b/drivers/media/video/s5p-fimc/fimc-capture.c index 382dacd2313..70f741f7659 100644 --- a/drivers/media/video/s5p-fimc/fimc-capture.c +++ b/drivers/media/video/s5p-fimc/fimc-capture.c @@ -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); diff --git a/drivers/media/video/s5p-fimc/fimc-core.c b/drivers/media/video/s5p-fimc/fimc-core.c index ef53528934f..9c3a8c51da4 100644 --- a/drivers/media/video/s5p-fimc/fimc-core.c +++ b/drivers/media/video/s5p-fimc/fimc-core.c @@ -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)) diff --git a/drivers/media/video/s5p-fimc/fimc-reg.c b/drivers/media/video/s5p-fimc/fimc-reg.c index 20e664e3416..44f5c2d1920 100644 --- a/drivers/media/video/s5p-fimc/fimc-reg.c +++ b/drivers/media/video/s5p-fimc/fimc-reg.c @@ -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); -- 2.11.4.GIT