[media] s5p-fimc: mem2mem driver refactoring and cleanup

Register access functions refactored for camera capture interface
control. Removed the workqueue since it was only useful for FIFO
output mode which is not supported at this time.
Fixed errors on module unload. Comments and whitespace cleanup.

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>

1 files changed, 21 insertions, 22 deletions

diff --git a/drivers/media/video/s5p-fimc/fimc-reg.c b/drivers/media/video/s5p-fimc/fimc-reg.c
index 70f29c5a6d1..94e98d47a7d 100644
--- a/drivers/media/video/s5p-fimc/fimc-reg.c
+++ b/drivers/media/video/s5p-fimc/fimc-reg.c
@@ -29,7 +29,7 @@ void fimc_hw_reset(struct fimc_dev *dev)
 	cfg = readl(dev->regs + S5P_CIGCTRL);
 	cfg |= (S5P_CIGCTRL_SWRST | S5P_CIGCTRL_IRQ_LEVEL);
 	writel(cfg, dev->regs + S5P_CIGCTRL);
-	msleep(1);
+	udelay(1000);
 
 	cfg = readl(dev->regs + S5P_CIGCTRL);
 	cfg &= ~S5P_CIGCTRL_SWRST;
@@ -247,21 +247,20 @@ void fimc_hw_en_lastirq(struct fimc_dev *dev, int enable)
 	spin_unlock_irqrestore(&dev->slock, flags);
 }
 
-void fimc_hw_set_prescaler(struct fimc_ctx *ctx)
+static void fimc_hw_set_prescaler(struct fimc_ctx *ctx)
 {
 	struct fimc_dev *dev =  ctx->fimc_dev;
 	struct fimc_scaler *sc = &ctx->scaler;
-	u32 cfg = 0, shfactor;
+	u32 cfg, shfactor;
 
 	shfactor = 10 - (sc->hfactor + sc->vfactor);
 
-	cfg |= S5P_CISCPRERATIO_SHFACTOR(shfactor);
+	cfg = S5P_CISCPRERATIO_SHFACTOR(shfactor);
 	cfg |= S5P_CISCPRERATIO_HOR(sc->pre_hratio);
 	cfg |= S5P_CISCPRERATIO_VER(sc->pre_vratio);
 	writel(cfg, dev->regs + S5P_CISCPRERATIO);
 
-	cfg = 0;
-	cfg |= S5P_CISCPREDST_WIDTH(sc->pre_dst_width);
+	cfg = S5P_CISCPREDST_WIDTH(sc->pre_dst_width);
 	cfg |= S5P_CISCPREDST_HEIGHT(sc->pre_dst_height);
 	writel(cfg, dev->regs + S5P_CISCPREDST);
 }
@@ -274,6 +273,8 @@ void fimc_hw_set_scaler(struct fimc_ctx *ctx)
 	struct fimc_frame *dst_frame = &ctx->d_frame;
 	u32 cfg = 0;
 
+	fimc_hw_set_prescaler(ctx);
+
 	if (!(ctx->flags & FIMC_COLOR_RANGE_NARROW))
 		cfg |= (S5P_CISCCTRL_CSCR2Y_WIDE | S5P_CISCCTRL_CSCY2R_WIDE);
 
@@ -364,7 +365,7 @@ static void fimc_hw_set_in_dma_size(struct fimc_ctx *ctx)
 	u32 cfg_r = 0;
 
 	if (FIMC_LCDFIFO == ctx->out_path)
-		cfg_r |=  S5P_CIREAL_ISIZE_AUTOLOAD_EN;
+		cfg_r |= S5P_CIREAL_ISIZE_AUTOLOAD_EN;
 
 	cfg_o |= S5P_ORIG_SIZE_HOR(frame->f_width);
 	cfg_o |= S5P_ORIG_SIZE_VER(frame->f_height);
@@ -380,27 +381,25 @@ void fimc_hw_set_in_dma(struct fimc_ctx *ctx)
 	struct fimc_dev *dev = ctx->fimc_dev;
 	struct fimc_frame *frame = &ctx->s_frame;
 	struct fimc_dma_offset *offset = &frame->dma_offset;
-	u32 cfg = 0;
+	u32 cfg;
 
 	/* Set the pixel offsets. */
-	cfg |= S5P_CIO_OFFS_HOR(offset->y_h);
+	cfg = S5P_CIO_OFFS_HOR(offset->y_h);
 	cfg |= S5P_CIO_OFFS_VER(offset->y_v);
 	writel(cfg, dev->regs + S5P_CIIYOFF);
 
-	cfg = 0;
-	cfg |= S5P_CIO_OFFS_HOR(offset->cb_h);
+	cfg = S5P_CIO_OFFS_HOR(offset->cb_h);
 	cfg |= S5P_CIO_OFFS_VER(offset->cb_v);
 	writel(cfg, dev->regs + S5P_CIICBOFF);
 
-	cfg = 0;
-	cfg |= S5P_CIO_OFFS_HOR(offset->cr_h);
+	cfg = S5P_CIO_OFFS_HOR(offset->cr_h);
 	cfg |= S5P_CIO_OFFS_VER(offset->cr_v);
 	writel(cfg, dev->regs + S5P_CIICROFF);
 
 	/* Input original and real size. */
 	fimc_hw_set_in_dma_size(ctx);
 
-	/* Autoload is used currently only in FIFO mode. */
+	/* Use DMA autoload only in FIFO mode. */
 	fimc_hw_en_autoload(dev, ctx->out_path == FIMC_LCDFIFO);
 
 	/* Set the input DMA to process single frame only. */
@@ -501,9 +500,7 @@ void fimc_hw_set_output_path(struct fimc_ctx *ctx)
 
 void fimc_hw_set_input_addr(struct fimc_dev *dev, struct fimc_addr *paddr)
 {
-	u32 cfg = 0;
-
-	cfg = readl(dev->regs + S5P_CIREAL_ISIZE);
+	u32 cfg = readl(dev->regs + S5P_CIREAL_ISIZE);
 	cfg |= S5P_CIREAL_ISIZE_ADDR_CH_DIS;
 	writel(cfg, dev->regs + S5P_CIREAL_ISIZE);
 
@@ -515,13 +512,15 @@ void fimc_hw_set_input_addr(struct fimc_dev *dev, struct fimc_addr *paddr)
 	writel(cfg, dev->regs + S5P_CIREAL_ISIZE);
 }
 
-void fimc_hw_set_output_addr(struct fimc_dev *dev, struct fimc_addr *paddr)
+void fimc_hw_set_output_addr(struct fimc_dev *dev,
+			     struct fimc_addr *paddr, int index)
 {
-	int i;
-	/* Set all the output register sets to point to single video buffer. */
-	for (i = 0; i < FIMC_MAX_OUT_BUFS; i++) {
+	int i = (index == -1) ? 0 : index;
+	do {
 		writel(paddr->y, dev->regs + S5P_CIOYSA(i));
 		writel(paddr->cb, dev->regs + S5P_CIOCBSA(i));
 		writel(paddr->cr, dev->regs + S5P_CIOCRSA(i));
-	}
+		dbg("dst_buf[%d]: 0x%X, cb: 0x%X, cr: 0x%X",
+		    i, paddr->y, paddr->cb, paddr->cr);
+	} while (index == -1 && ++i < FIMC_MAX_OUT_BUFS);
 }