Merge commit 'v2.6.39' into for-2.6.40/core

Since for-2.6.40/core was forked off the 2.6.39 devel tree, we've
had churn in the core area that makes it difficult to handle
patches for eg cfq or blk-throttle. Instead of requiring that they
be based in older versions with bugs that have been fixed later
in the rc cycle, merge in 2.6.39 final.

Also fixes up conflicts in the below files.

Conflicts:
	drivers/block/paride/pcd.c
	drivers/cdrom/viocd.c
	drivers/ide/ide-cd.c

Signed-off-by: Jens Axboe <jaxboe@fusionio.com>

9 files changed, 225 insertions, 58 deletions

diff --git a/drivers/media/video/omap3isp/isp.c b/drivers/media/video/omap3isp/isp.c
index 503bd7922bd6..472a69359e60 100644
--- a/drivers/media/video/omap3isp/isp.c
+++ b/drivers/media/video/omap3isp/isp.c
@@ -215,20 +215,21 @@ static u32 isp_set_xclk(struct isp_device *isp, u32 xclk, u8 xclksel)
 	}
 
 	switch (xclksel) {
-	case 0:
+	case ISP_XCLK_A:
 		isp_reg_clr_set(isp, OMAP3_ISP_IOMEM_MAIN, ISP_TCTRL_CTRL,
 				ISPTCTRL_CTRL_DIVA_MASK,
 				divisor << ISPTCTRL_CTRL_DIVA_SHIFT);
 		dev_dbg(isp->dev, "isp_set_xclk(): cam_xclka set to %d Hz\n",
 			currentxclk);
 		break;
-	case 1:
+	case ISP_XCLK_B:
 		isp_reg_clr_set(isp, OMAP3_ISP_IOMEM_MAIN, ISP_TCTRL_CTRL,
 				ISPTCTRL_CTRL_DIVB_MASK,
 				divisor << ISPTCTRL_CTRL_DIVB_SHIFT);
 		dev_dbg(isp->dev, "isp_set_xclk(): cam_xclkb set to %d Hz\n",
 			currentxclk);
 		break;
+	case ISP_XCLK_NONE:
 	default:
 		omap3isp_put(isp);
 		dev_dbg(isp->dev, "ISP_ERR: isp_set_xclk(): Invalid requested "
@@ -237,13 +238,13 @@ static u32 isp_set_xclk(struct isp_device *isp, u32 xclk, u8 xclksel)
 	}
 
 	/* Do we go from stable whatever to clock? */
-	if (divisor >= 2 && isp->xclk_divisor[xclksel] < 2)
+	if (divisor >= 2 && isp->xclk_divisor[xclksel - 1] < 2)
 		omap3isp_get(isp);
 	/* Stopping the clock. */
-	else if (divisor < 2 && isp->xclk_divisor[xclksel] >= 2)
+	else if (divisor < 2 && isp->xclk_divisor[xclksel - 1] >= 2)
 		omap3isp_put(isp);
 
-	isp->xclk_divisor[xclksel] = divisor;
+	isp->xclk_divisor[xclksel - 1] = divisor;
 
 	omap3isp_put(isp);
 
@@ -285,7 +286,8 @@ static void isp_power_settings(struct isp_device *isp, int idle)
  */
 void omap3isp_configure_bridge(struct isp_device *isp,
 			       enum ccdc_input_entity input,
-			       const struct isp_parallel_platform_data *pdata)
+			       const struct isp_parallel_platform_data *pdata,
+			       unsigned int shift)
 {
 	u32 ispctrl_val;
 
@@ -298,9 +300,9 @@ void omap3isp_configure_bridge(struct isp_device *isp,
 	switch (input) {
 	case CCDC_INPUT_PARALLEL:
 		ispctrl_val |= ISPCTRL_PAR_SER_CLK_SEL_PARALLEL;
-		ispctrl_val |= pdata->data_lane_shift << ISPCTRL_SHIFT_SHIFT;
 		ispctrl_val |= pdata->clk_pol << ISPCTRL_PAR_CLK_POL_SHIFT;
 		ispctrl_val |= pdata->bridge << ISPCTRL_PAR_BRIDGE_SHIFT;
+		shift += pdata->data_lane_shift * 2;
 		break;
 
 	case CCDC_INPUT_CSI2A:
@@ -319,6 +321,8 @@ void omap3isp_configure_bridge(struct isp_device *isp,
 		return;
 	}
 
+	ispctrl_val |= ((shift/2) << ISPCTRL_SHIFT_SHIFT) & ISPCTRL_SHIFT_MASK;
+
 	ispctrl_val &= ~ISPCTRL_SYNC_DETECT_MASK;
 	ispctrl_val |= ISPCTRL_SYNC_DETECT_VSRISE;
 
@@ -658,6 +662,8 @@ int omap3isp_pipeline_pm_use(struct media_entity *entity, int use)
 
 	/* Apply power change to connected non-nodes. */
 	ret = isp_pipeline_pm_power(entity, change);
+	if (ret < 0)
+		entity->use_count -= change;
 
 	mutex_unlock(&entity->parent->graph_mutex);
 
@@ -872,6 +878,9 @@ static int isp_pipeline_disable(struct isp_pipeline *pipe)
 		}
 	}
 
+	if (failure < 0)
+		isp->needs_reset = true;
+
 	return failure;
 }
 
@@ -884,7 +893,8 @@ static int isp_pipeline_disable(struct isp_pipeline *pipe)
  * single-shot or continuous mode.
  *
  * Return 0 if successful, or the return value of the failed video::s_stream
- * operation otherwise.
+ * operation otherwise. The pipeline state is not updated when the operation
+ * fails, except when stopping the pipeline.
  */
 int omap3isp_pipeline_set_stream(struct isp_pipeline *pipe,
 				 enum isp_pipeline_stream_state state)
@@ -895,7 +905,9 @@ int omap3isp_pipeline_set_stream(struct isp_pipeline *pipe,
 		ret = isp_pipeline_disable(pipe);
 	else
 		ret = isp_pipeline_enable(pipe, state);
-	pipe->stream_state = state;
+
+	if (ret == 0 || state == ISP_PIPELINE_STREAM_STOPPED)
+		pipe->stream_state = state;
 
 	return ret;
 }
@@ -1481,6 +1493,10 @@ void omap3isp_put(struct isp_device *isp)
 	if (--isp->ref_count == 0) {
 		isp_disable_interrupts(isp);
 		isp_save_ctx(isp);
+		if (isp->needs_reset) {
+			isp_reset(isp);
+			isp->needs_reset = false;
+		}
 		isp_disable_clocks(isp);
 	}
 	mutex_unlock(&isp->isp_mutex);
diff --git a/drivers/media/video/omap3isp/isp.h b/drivers/media/video/omap3isp/isp.h
index cf5214e95a92..2620c405f5e4 100644
--- a/drivers/media/video/omap3isp/isp.h
+++ b/drivers/media/video/omap3isp/isp.h
@@ -132,7 +132,6 @@ struct isp_reg {
 
 /**
  * struct isp_parallel_platform_data - Parallel interface platform data
- * @width: Parallel bus width in bits (8, 10, 11 or 12)
  * @data_lane_shift: Data lane shifter
  *		0 - CAMEXT[13:0] -> CAM[13:0]
  *		1 - CAMEXT[13:2] -> CAM[11:0]
@@ -146,7 +145,6 @@ struct isp_reg {
  *		ISPCTRL_PAR_BRIDGE_BENDIAN - Big endian
  */
 struct isp_parallel_platform_data {
-	unsigned int width;
 	unsigned int data_lane_shift:2;
 	unsigned int clk_pol:1;
 	unsigned int bridge:4;
@@ -262,6 +260,7 @@ struct isp_device {
 	/* ISP Obj */
 	spinlock_t stat_lock;	/* common lock for statistic drivers */
 	struct mutex isp_mutex;	/* For handling ref_count field */
+	bool needs_reset;
 	int has_context;
 	int ref_count;
 	unsigned int autoidle;
@@ -311,11 +310,12 @@ int omap3isp_pipeline_set_stream(struct isp_pipeline *pipe,
 				 enum isp_pipeline_stream_state state);
 void omap3isp_configure_bridge(struct isp_device *isp,
 			       enum ccdc_input_entity input,
-			       const struct isp_parallel_platform_data *pdata);
+			       const struct isp_parallel_platform_data *pdata,
+			       unsigned int shift);
 
-#define ISP_XCLK_NONE			-1
-#define ISP_XCLK_A			0
-#define ISP_XCLK_B			1
+#define ISP_XCLK_NONE			0
+#define ISP_XCLK_A			1
+#define ISP_XCLK_B			2
 
 struct isp_device *omap3isp_get(struct isp_device *isp);
 void omap3isp_put(struct isp_device *isp);
diff --git a/drivers/media/video/omap3isp/ispccdc.c b/drivers/media/video/omap3isp/ispccdc.c
index 5ff9d14ce710..39d501bda636 100644
--- a/drivers/media/video/omap3isp/ispccdc.c
+++ b/drivers/media/video/omap3isp/ispccdc.c
@@ -43,6 +43,12 @@ __ccdc_get_format(struct isp_ccdc_device *ccdc, struct v4l2_subdev_fh *fh,
 
 static const unsigned int ccdc_fmts[] = {
 	V4L2_MBUS_FMT_Y8_1X8,
+	V4L2_MBUS_FMT_Y10_1X10,
+	V4L2_MBUS_FMT_Y12_1X12,
+	V4L2_MBUS_FMT_SGRBG8_1X8,
+	V4L2_MBUS_FMT_SRGGB8_1X8,
+	V4L2_MBUS_FMT_SBGGR8_1X8,
+	V4L2_MBUS_FMT_SGBRG8_1X8,
 	V4L2_MBUS_FMT_SGRBG10_1X10,
 	V4L2_MBUS_FMT_SRGGB10_1X10,
 	V4L2_MBUS_FMT_SBGGR10_1X10,
@@ -1110,21 +1116,38 @@ static void ccdc_configure(struct isp_ccdc_device *ccdc)
 	struct isp_parallel_platform_data *pdata = NULL;
 	struct v4l2_subdev *sensor;
 	struct v4l2_mbus_framefmt *format;
+	const struct isp_format_info *fmt_info;
+	struct v4l2_subdev_format fmt_src;
+	unsigned int depth_out;
+	unsigned int depth_in = 0;
 	struct media_pad *pad;
 	unsigned long flags;
+	unsigned int shift;
 	u32 syn_mode;
 	u32 ccdc_pattern;
 
-	if (ccdc->input == CCDC_INPUT_PARALLEL) {
-		pad = media_entity_remote_source(&ccdc->pads[CCDC_PAD_SINK]);
-		sensor = media_entity_to_v4l2_subdev(pad->entity);
+	pad = media_entity_remote_source(&ccdc->pads[CCDC_PAD_SINK]);
+	sensor = media_entity_to_v4l2_subdev(pad->entity);
+	if (ccdc->input == CCDC_INPUT_PARALLEL)
 		pdata = &((struct isp_v4l2_subdevs_group *)sensor->host_priv)
 			->bus.parallel;
+
+	/* Compute shift value for lane shifter to configure the bridge. */
+	fmt_src.pad = pad->index;
+	fmt_src.which = V4L2_SUBDEV_FORMAT_ACTIVE;
+	if (!v4l2_subdev_call(sensor, pad, get_fmt, NULL, &fmt_src)) {
+		fmt_info = omap3isp_video_format_info(fmt_src.format.code);
+		depth_in = fmt_info->bpp;
 	}
 
-	omap3isp_configure_bridge(isp, ccdc->input, pdata);
+	fmt_info = omap3isp_video_format_info
+		(isp->isp_ccdc.formats[CCDC_PAD_SINK].code);
+	depth_out = fmt_info->bpp;
+
+	shift = depth_in - depth_out;
+	omap3isp_configure_bridge(isp, ccdc->input, pdata, shift);
 
-	ccdc->syncif.datsz = pdata ? pdata->width : 10;
+	ccdc->syncif.datsz = depth_out;
 	ccdc_config_sync_if(ccdc, &ccdc->syncif);
 
 	/* CCDC_PAD_SINK */
@@ -1338,7 +1361,7 @@ static int ccdc_sbl_wait_idle(struct isp_ccdc_device *ccdc,
  * @ccdc: Pointer to ISP CCDC device.
  * @event: Pointing which event trigger handler
  *
- * Return 1 when the event and stopping request combination is satisfyied,
+ * Return 1 when the event and stopping request combination is satisfied,
  * zero otherwise.
  */
 static int __ccdc_handle_stopping(struct isp_ccdc_device *ccdc, u32 event)
@@ -1618,7 +1641,7 @@ static int ccdc_video_queue(struct isp_video *video, struct isp_buffer *buffer)
 
 	ccdc_set_outaddr(ccdc, buffer->isp_addr);
 
-	/* We now have a buffer queued on the output, restart the pipeline in
+	/* We now have a buffer queued on the output, restart the pipeline
 	 * on the next CCDC interrupt if running in continuous mode (or when
 	 * starting the stream).
 	 */
diff --git a/drivers/media/video/omap3isp/isppreview.c b/drivers/media/video/omap3isp/isppreview.c
index 2b16988a501d..aba537af87e4 100644
--- a/drivers/media/video/omap3isp/isppreview.c
+++ b/drivers/media/video/omap3isp/isppreview.c
@@ -755,7 +755,7 @@ static struct preview_update update_attrs[] = {
  * @configs - pointer to update config structure.
  * @config - return pointer to appropriate structure field.
  * @bit - for which feature to return pointers.
- * Return size of coresponding prev_params member
+ * Return size of corresponding prev_params member
  */
 static u32
 __preview_get_ptrs(struct prev_params *params, void **param,
diff --git a/drivers/media/video/omap3isp/ispqueue.c b/drivers/media/video/omap3isp/ispqueue.c
index 8fddc5806b0d..9c317148205f 100644
--- a/drivers/media/video/omap3isp/ispqueue.c
+++ b/drivers/media/video/omap3isp/ispqueue.c
@@ -339,7 +339,7 @@ static int isp_video_buffer_prepare_user(struct isp_video_buffer *buf)
 	up_read(&current->mm->mmap_sem);
 
 	if (ret != buf->npages) {
-		buf->npages = ret;
+		buf->npages = ret < 0 ? 0 : ret;
 		isp_video_buffer_cleanup(buf);
 		return -EFAULT;
 	}
@@ -408,8 +408,8 @@ done:
  * isp_video_buffer_prepare_vm_flags - Get VMA flags for a userspace address
  *
  * This function locates the VMAs for the buffer's userspace address and checks
- * that their flags match. The onlflag that we need to care for at the moment is
- * VM_PFNMAP.
+ * that their flags match. The only flag that we need to care for at the moment
+ * is VM_PFNMAP.
  *
  * The buffer vm_flags field is set to the first VMA flags.
  *
diff --git a/drivers/media/video/omap3isp/ispresizer.c b/drivers/media/video/omap3isp/ispresizer.c
index 653f88ba56db..0bb0f8cd36f5 100644
--- a/drivers/media/video/omap3isp/ispresizer.c
+++ b/drivers/media/video/omap3isp/ispresizer.c
@@ -714,19 +714,50 @@ static void resizer_print_status(struct isp_res_device *res)
  * iw and ih are the input width and height after cropping. Those equations need
  * to be satisfied exactly for the resizer to work correctly.
  *
- * Reverting the equations, we can compute the resizing ratios with
+ * The equations can't be easily reverted, as the >> 8 operation is not linear.
+ * In addition, not all input sizes can be achieved for a given output size. To
+ * get the highest input size lower than or equal to the requested input size,
+ * we need to compute the highest resizing ratio that satisfies the following
+ * inequality (taking the 4-tap mode width equation as an example)
+ *
+ *	iw >= (32 * sph + (ow - 1) * hrsz + 16) >> 8 - 7
+ *
+ * (where iw is the requested input width) which can be rewritten as
+ *
+ *	  iw - 7            >= (32 * sph + (ow - 1) * hrsz + 16) >> 8
+ *	 (iw - 7) << 8      >=  32 * sph + (ow - 1) * hrsz + 16 - b
+ *	((iw - 7) << 8) + b >=  32 * sph + (ow - 1) * hrsz + 16
+ *
+ * where b is the value of the 8 least significant bits of the right hand side
+ * expression of the last inequality. The highest resizing ratio value will be
+ * achieved when b is equal to its maximum value of 255. That resizing ratio
+ * value will still satisfy the original inequality, as b will disappear when
+ * the expression will be shifted right by 8.
+ *
+ * The reverted the equations thus become
  *
  * - 8-phase, 4-tap mode
- *	hrsz = ((iw - 7) * 256 - 16 - 32 * sph) / (ow - 1)
- *	vrsz = ((ih - 4) * 256 - 16 - 32 * spv) / (oh - 1)
+ *	hrsz = ((iw - 7) * 256 + 255 - 16 - 32 * sph) / (ow - 1)
+ *	vrsz = ((ih - 4) * 256 + 255 - 16 - 32 * spv) / (oh - 1)
  * - 4-phase, 7-tap mode
- *	hrsz = ((iw - 7) * 256 - 32 - 64 * sph) / (ow - 1)
- *	vrsz = ((ih - 7) * 256 - 32 - 64 * spv) / (oh - 1)
+ *	hrsz = ((iw - 7) * 256 + 255 - 32 - 64 * sph) / (ow - 1)
+ *	vrsz = ((ih - 7) * 256 + 255 - 32 - 64 * spv) / (oh - 1)
  *
- * The ratios are integer values, and must be rounded down to ensure that the
- * cropped input size is not bigger than the uncropped input size. As the ratio
- * in 7-tap mode is always smaller than the ratio in 4-tap mode, we can use the
- * 7-tap mode equations to compute a ratio approximation.
+ * The ratios are integer values, and are rounded down to ensure that the
+ * cropped input size is not bigger than the uncropped input size.
+ *
+ * As the number of phases/taps, used to select the correct equations to compute
+ * the ratio, depends on the ratio, we start with the 4-tap mode equations to
+ * compute an approximation of the ratio, and switch to the 7-tap mode equations
+ * if the approximation is higher than the ratio threshold.
+ *
+ * As the 7-tap mode equations will return a ratio smaller than or equal to the
+ * 4-tap mode equations, the resulting ratio could become lower than or equal to
+ * the ratio threshold. This 'equations loop' isn't an issue as long as the
+ * correct equations are used to compute the final input size. Starting with the
+ * 4-tap mode equations ensure that, in case of values resulting in a 'ratio
+ * loop', the smallest of the ratio values will be used, never exceeding the
+ * requested input size.
  *
  * We first clamp the output size according to the hardware capabilitie to avoid
  * auto-cropping the input more than required to satisfy the TRM equations. The
@@ -775,6 +806,8 @@ static void resizer_calc_ratios(struct isp_res_device *res,
 	unsigned int max_width;
 	unsigned int max_height;
 	unsigned int width_alignment;
+	unsigned int width;
+	unsigned int height;
 
 	/*
 	 * Clamp the output height based on the hardware capabilities and
@@ -786,19 +819,22 @@ static void resizer_calc_ratios(struct isp_res_device *res,
 	max_height = min_t(unsigned int, max_height, MAX_OUT_HEIGHT);
 	output->height = clamp(output->height, min_height, max_height);
 
-	ratio->vert = ((input->height - 7) * 256 - 32 - 64 * spv)
+	ratio->vert = ((input->height - 4) * 256 + 255 - 16 - 32 * spv)
 		    / (output->height - 1);
+	if (ratio->vert > MID_RESIZE_VALUE)
+		ratio->vert = ((input->height - 7) * 256 + 255 - 32 - 64 * spv)
+			    / (output->height - 1);
 	ratio->vert = clamp_t(unsigned int, ratio->vert,
 			      MIN_RESIZE_VALUE, MAX_RESIZE_VALUE);
 
 	if (ratio->vert <= MID_RESIZE_VALUE) {
 		upscaled_height = (output->height - 1) * ratio->vert
 				+ 32 * spv + 16;
-		input->height = (upscaled_height >> 8) + 4;
+		height = (upscaled_height >> 8) + 4;
 	} else {
 		upscaled_height = (output->height - 1) * ratio->vert
 				+ 64 * spv + 32;
-		input->height = (upscaled_height >> 8) + 7;
+		height = (upscaled_height >> 8) + 7;
 	}
 
 	/*
@@ -854,20 +890,29 @@ static void resizer_calc_ratios(struct isp_res_device *res,
 			      max_width & ~(width_alignment - 1));
 	output->width = ALIGN(output->width, width_alignment);
 
-	ratio->horz = ((input->width - 7) * 256 - 32 - 64 * sph)
+	ratio->horz = ((input->width - 7) * 256 + 255 - 16 - 32 * sph)
 		    / (output->width - 1);
+	if (ratio->horz > MID_RESIZE_VALUE)
+		ratio->horz = ((input->width - 7) * 256 + 255 - 32 - 64 * sph)
+			    / (output->width - 1);
 	ratio->horz = clamp_t(unsigned int, ratio->horz,
 			      MIN_RESIZE_VALUE, MAX_RESIZE_VALUE);
 
 	if (ratio->horz <= MID_RESIZE_VALUE) {
 		upscaled_width = (output->width - 1) * ratio->horz
 			       + 32 * sph + 16;
-		input->width = (upscaled_width >> 8) + 7;
+		width = (upscaled_width >> 8) + 7;
 	} else {
 		upscaled_width = (output->width - 1) * ratio->horz
 			       + 64 * sph + 32;
-		input->width = (upscaled_width >> 8) + 7;
+		width = (upscaled_width >> 8) + 7;
 	}
+
+	/* Center the new crop rectangle. */
+	input->left += (input->width - width) / 2;
+	input->top += (input->height - height) / 2;
+	input->width = width;
+	input->height = height;
 }
 
 /*
diff --git a/drivers/media/video/omap3isp/ispstat.h b/drivers/media/video/omap3isp/ispstat.h
index 820950c9ef46..d86da94fa50d 100644
--- a/drivers/media/video/omap3isp/ispstat.h
+++ b/drivers/media/video/omap3isp/ispstat.h
@@ -131,9 +131,9 @@ struct ispstat {
 struct ispstat_generic_config {
 	/*
 	 * Fields must be in the same order as in:
-	 *  - isph3a_aewb_config
-	 *  - isph3a_af_config
-	 *  - isphist_config
+	 *  - omap3isp_h3a_aewb_config
+	 *  - omap3isp_h3a_af_config
+	 *  - omap3isp_hist_config
 	 */
 	u32 buf_size;
 	u16 config_counter;
diff --git a/drivers/media/video/omap3isp/ispvideo.c b/drivers/media/video/omap3isp/ispvideo.c
index 208a7ec739d7..9cd8f1aa567b 100644
--- a/drivers/media/video/omap3isp/ispvideo.c
+++ b/drivers/media/video/omap3isp/ispvideo.c
@@ -47,29 +47,59 @@
 
 static struct isp_format_info formats[] = {
 	{ V4L2_MBUS_FMT_Y8_1X8, V4L2_MBUS_FMT_Y8_1X8,
-	  V4L2_MBUS_FMT_Y8_1X8, V4L2_PIX_FMT_GREY, 8, },
+	  V4L2_MBUS_FMT_Y8_1X8, V4L2_MBUS_FMT_Y8_1X8,
+	  V4L2_PIX_FMT_GREY, 8, },
+	{ V4L2_MBUS_FMT_Y10_1X10, V4L2_MBUS_FMT_Y10_1X10,
+	  V4L2_MBUS_FMT_Y10_1X10, V4L2_MBUS_FMT_Y8_1X8,
+	  V4L2_PIX_FMT_Y10, 10, },
+	{ V4L2_MBUS_FMT_Y12_1X12, V4L2_MBUS_FMT_Y10_1X10,
+	  V4L2_MBUS_FMT_Y12_1X12, V4L2_MBUS_FMT_Y8_1X8,
+	  V4L2_PIX_FMT_Y12, 12, },
+	{ V4L2_MBUS_FMT_SBGGR8_1X8, V4L2_MBUS_FMT_SBGGR8_1X8,
+	  V4L2_MBUS_FMT_SBGGR8_1X8, V4L2_MBUS_FMT_SBGGR8_1X8,
+	  V4L2_PIX_FMT_SBGGR8, 8, },
+	{ V4L2_MBUS_FMT_SGBRG8_1X8, V4L2_MBUS_FMT_SGBRG8_1X8,
+	  V4L2_MBUS_FMT_SGBRG8_1X8, V4L2_MBUS_FMT_SGBRG8_1X8,
+	  V4L2_PIX_FMT_SGBRG8, 8, },
+	{ V4L2_MBUS_FMT_SGRBG8_1X8, V4L2_MBUS_FMT_SGRBG8_1X8,
+	  V4L2_MBUS_FMT_SGRBG8_1X8, V4L2_MBUS_FMT_SGRBG8_1X8,
+	  V4L2_PIX_FMT_SGRBG8, 8, },
+	{ V4L2_MBUS_FMT_SRGGB8_1X8, V4L2_MBUS_FMT_SRGGB8_1X8,
+	  V4L2_MBUS_FMT_SRGGB8_1X8, V4L2_MBUS_FMT_SRGGB8_1X8,
+	  V4L2_PIX_FMT_SRGGB8, 8, },
 	{ V4L2_MBUS_FMT_SGRBG10_DPCM8_1X8, V4L2_MBUS_FMT_SGRBG10_DPCM8_1X8,
-	  V4L2_MBUS_FMT_SGRBG10_1X10, V4L2_PIX_FMT_SGRBG10DPCM8, 8, },
+	  V4L2_MBUS_FMT_SGRBG10_1X10, 0,
+	  V4L2_PIX_FMT_SGRBG10DPCM8, 8, },
 	{ V4L2_MBUS_FMT_SBGGR10_1X10, V4L2_MBUS_FMT_SBGGR10_1X10,
-	  V4L2_MBUS_FMT_SBGGR10_1X10, V4L2_PIX_FMT_SBGGR10, 10, },
+	  V4L2_MBUS_FMT_SBGGR10_1X10, V4L2_MBUS_FMT_SBGGR8_1X8,
+	  V4L2_PIX_FMT_SBGGR10, 10, },
 	{ V4L2_MBUS_FMT_SGBRG10_1X10, V4L2_MBUS_FMT_SGBRG10_1X10,
-	  V4L2_MBUS_FMT_SGBRG10_1X10, V4L2_PIX_FMT_SGBRG10, 10, },
+	  V4L2_MBUS_FMT_SGBRG10_1X10, V4L2_MBUS_FMT_SGBRG8_1X8,
+	  V4L2_PIX_FMT_SGBRG10, 10, },
 	{ V4L2_MBUS_FMT_SGRBG10_1X10, V4L2_MBUS_FMT_SGRBG10_1X10,
-	  V4L2_MBUS_FMT_SGRBG10_1X10, V4L2_PIX_FMT_SGRBG10, 10, },
+	  V4L2_MBUS_FMT_SGRBG10_1X10, V4L2_MBUS_FMT_SGRBG8_1X8,
+	  V4L2_PIX_FMT_SGRBG10, 10, },
 	{ V4L2_MBUS_FMT_SRGGB10_1X10, V4L2_MBUS_FMT_SRGGB10_1X10,
-	  V4L2_MBUS_FMT_SRGGB10_1X10, V4L2_PIX_FMT_SRGGB10, 10, },
+	  V4L2_MBUS_FMT_SRGGB10_1X10, V4L2_MBUS_FMT_SRGGB8_1X8,
+	  V4L2_PIX_FMT_SRGGB10, 10, },
 	{ V4L2_MBUS_FMT_SBGGR12_1X12, V4L2_MBUS_FMT_SBGGR10_1X10,
-	  V4L2_MBUS_FMT_SBGGR12_1X12, V4L2_PIX_FMT_SBGGR12, 12, },
+	  V4L2_MBUS_FMT_SBGGR12_1X12, V4L2_MBUS_FMT_SBGGR8_1X8,
+	  V4L2_PIX_FMT_SBGGR12, 12, },
 	{ V4L2_MBUS_FMT_SGBRG12_1X12, V4L2_MBUS_FMT_SGBRG10_1X10,
-	  V4L2_MBUS_FMT_SGBRG12_1X12, V4L2_PIX_FMT_SGBRG12, 12, },
+	  V4L2_MBUS_FMT_SGBRG12_1X12, V4L2_MBUS_FMT_SGBRG8_1X8,
+	  V4L2_PIX_FMT_SGBRG12, 12, },
 	{ V4L2_MBUS_FMT_SGRBG12_1X12, V4L2_MBUS_FMT_SGRBG10_1X10,
-	  V4L2_MBUS_FMT_SGRBG12_1X12, V4L2_PIX_FMT_SGRBG12, 12, },
+	  V4L2_MBUS_FMT_SGRBG12_1X12, V4L2_MBUS_FMT_SGRBG8_1X8,
+	  V4L2_PIX_FMT_SGRBG12, 12, },
 	{ V4L2_MBUS_FMT_SRGGB12_1X12, V4L2_MBUS_FMT_SRGGB10_1X10,
-	  V4L2_MBUS_FMT_SRGGB12_1X12, V4L2_PIX_FMT_SRGGB12, 12, },
+	  V4L2_MBUS_FMT_SRGGB12_1X12, V4L2_MBUS_FMT_SRGGB8_1X8,
+	  V4L2_PIX_FMT_SRGGB12, 12, },
 	{ V4L2_MBUS_FMT_UYVY8_1X16, V4L2_MBUS_FMT_UYVY8_1X16,
-	  V4L2_MBUS_FMT_UYVY8_1X16, V4L2_PIX_FMT_UYVY, 16, },
+	  V4L2_MBUS_FMT_UYVY8_1X16, 0,
+	  V4L2_PIX_FMT_UYVY, 16, },
 	{ V4L2_MBUS_FMT_YUYV8_1X16, V4L2_MBUS_FMT_YUYV8_1X16,
-	  V4L2_MBUS_FMT_YUYV8_1X16, V4L2_PIX_FMT_YUYV, 16, },
+	  V4L2_MBUS_FMT_YUYV8_1X16, 0,
+	  V4L2_PIX_FMT_YUYV, 16, },
 };
 
 const struct isp_format_info *
@@ -86,6 +116,37 @@ omap3isp_video_format_info(enum v4l2_mbus_pixelcode code)
 }
 
 /*
+ * Decide whether desired output pixel code can be obtained with
+ * the lane shifter by shifting the input pixel code.
+ * @in: input pixelcode to shifter
+ * @out: output pixelcode from shifter
+ * @additional_shift: # of bits the sensor's LSB is offset from CAMEXT[0]
+ *
+ * return true if the combination is possible
+ * return false otherwise
+ */
+static bool isp_video_is_shiftable(enum v4l2_mbus_pixelcode in,
+		enum v4l2_mbus_pixelcode out,
+		unsigned int additional_shift)
+{
+	const struct isp_format_info *in_info, *out_info;
+
+	if (in == out)
+		return true;
+
+	in_info = omap3isp_video_format_info(in);
+	out_info = omap3isp_video_format_info(out);
+
+	if ((in_info->flavor == 0) || (out_info->flavor == 0))
+		return false;
+
+	if (in_info->flavor != out_info->flavor)
+		return false;
+
+	return in_info->bpp - out_info->bpp + additional_shift <= 6;
+}
+
+/*
  * isp_video_mbus_to_pix - Convert v4l2_mbus_framefmt to v4l2_pix_format
  * @video: ISP video instance
  * @mbus: v4l2_mbus_framefmt format (input)
@@ -235,6 +296,7 @@ static int isp_video_validate_pipeline(struct isp_pipeline *pipe)
 		return -EPIPE;
 
 	while (1) {
+		unsigned int shifter_link;
 		/* Retrieve the sink format */
 		pad = &subdev->entity.pads[0];
 		if (!(pad->flags & MEDIA_PAD_FL_SINK))
@@ -263,6 +325,10 @@ static int isp_video_validate_pipeline(struct isp_pipeline *pipe)
 				return -ENOSPC;
 		}
 
+		/* If sink pad is on CCDC, the link has the lane shifter
+		 * in the middle of it. */
+		shifter_link = subdev == &isp->isp_ccdc.subdev;
+
 		/* Retrieve the source format */
 		pad = media_entity_remote_source(pad);
 		if (pad == NULL ||
@@ -278,10 +344,24 @@ static int isp_video_validate_pipeline(struct isp_pipeline *pipe)
 			return -EPIPE;
 
 		/* Check if the two ends match */
-		if (fmt_source.format.code != fmt_sink.format.code ||
-		    fmt_source.format.width != fmt_sink.format.width ||
+		if (fmt_source.format.width != fmt_sink.format.width ||
 		    fmt_source.format.height != fmt_sink.format.height)
 			return -EPIPE;
+
+		if (shifter_link) {
+			unsigned int parallel_shift = 0;
+			if (isp->isp_ccdc.input == CCDC_INPUT_PARALLEL) {
+				struct isp_parallel_platform_data *pdata =
+					&((struct isp_v4l2_subdevs_group *)
+					      subdev->host_priv)->bus.parallel;
+				parallel_shift = pdata->data_lane_shift * 2;
+			}
+			if (!isp_video_is_shiftable(fmt_source.format.code,
+						fmt_sink.format.code,
+						parallel_shift))
+				return -EPIPE;
+		} else if (fmt_source.format.code != fmt_sink.format.code)
+			return -EPIPE;
 	}
 
 	return 0;
diff --git a/drivers/media/video/omap3isp/ispvideo.h b/drivers/media/video/omap3isp/ispvideo.h
index 524a1acd0906..911bea64e78a 100644
--- a/drivers/media/video/omap3isp/ispvideo.h
+++ b/drivers/media/video/omap3isp/ispvideo.h
@@ -49,6 +49,8 @@ struct v4l2_pix_format;
  *	bits. Identical to @code if the format is 10 bits wide or less.
  * @uncompressed: V4L2 media bus format code for the corresponding uncompressed
  *	format. Identical to @code if the format is not DPCM compressed.
+ * @flavor: V4L2 media bus format code for the same pixel layout but
+ *	shifted to be 8 bits per pixel. =0 if format is not shiftable.
  * @pixelformat: V4L2 pixel format FCC identifier
  * @bpp: Bits per pixel
  */
@@ -56,6 +58,7 @@ struct isp_format_info {
 	enum v4l2_mbus_pixelcode code;
 	enum v4l2_mbus_pixelcode truncated;
 	enum v4l2_mbus_pixelcode uncompressed;
+	enum v4l2_mbus_pixelcode flavor;
 	u32 pixelformat;
 	unsigned int bpp;
 };