1 files changed, 304 insertions, 112 deletions

diff --git a/drivers/media/video/pxa_camera.c b/drivers/media/video/pxa_camera.c
index 936db67a5b0f..b999bda23c48 100644
--- a/drivers/media/video/pxa_camera.c
+++ b/drivers/media/video/pxa_camera.c
@@ -49,6 +49,9 @@
 
 #define CICR1_DW_VAL(x)   ((x) & CICR1_DW)          /* Data bus width */
 #define CICR1_PPL_VAL(x)  (((x) << 15) & CICR1_PPL) /* Pixels per line */
+#define CICR1_COLOR_SP_VAL(x)   (((x) << 3) & CICR1_COLOR_SP)   /* color space */
+#define CICR1_RGB_BPP_VAL(x)    (((x) << 7) & CICR1_RGB_BPP)    /* bpp for rgb */
+#define CICR1_RGBT_CONV_VAL(x)  (((x) << 29) & CICR1_RGBT_CONV) /* rgbt conv */
 
 #define CICR2_BLW_VAL(x)  (((x) << 24) & CICR2_BLW) /* Beginning-of-line pixel clock wait count */
 #define CICR2_ELW_VAL(x)  (((x) << 16) & CICR2_ELW) /* End-of-line pixel clock wait count */
@@ -70,6 +73,19 @@ static DEFINE_MUTEX(camera_lock);
 /*
  * Structures
  */
+enum pxa_camera_active_dma {
+        DMA_Y = 0x1,
+        DMA_U = 0x2,
+        DMA_V = 0x4,
+};
+
+/* descriptor needed for the PXA DMA engine */
+struct pxa_cam_dma {
+        dma_addr_t              sg_dma;
+        struct pxa_dma_desc     *sg_cpu;
+        size_t                  sg_size;
+        int                     sglen;
+};
 
 /* buffer for one video frame */
 struct pxa_buffer {
@@ -78,11 +94,12 @@ struct pxa_buffer {
 
         const struct soc_camera_data_format        *fmt;
 
-        /* our descriptor list needed for the PXA DMA engine */
-        dma_addr_t              sg_dma;
-        struct pxa_dma_desc     *sg_cpu;
-        size_t                  sg_size;
+        /* our descriptor lists for Y, U and V channels */
+        struct pxa_cam_dma dmas[3];
+
         int                     inwork;
+
+        enum pxa_camera_active_dma active_dma;
 };
 
 struct pxa_framebuffer_queue {
@@ -100,7 +117,8 @@ struct pxa_camera_dev {
 
         unsigned int            irq;
         void __iomem            *base;
-        unsigned int            dma_chan_y;
+
+        unsigned int            dma_chans[3];
 
         struct pxacamera_platform_data *pdata;
         struct resource         *res;
@@ -128,7 +146,15 @@ static int pxa_videobuf_setup(struct videobuf_queue *vq, unsigned int *count,
 
         dev_dbg(&icd->dev, "count=%d, size=%d\n", *count, *size);
 
-        *size = icd->width * icd->height * ((icd->current_fmt->depth + 7) >> 3);
+        /* planar capture requires Y, U and V buffers to be page aligned */
+        if (icd->current_fmt->fourcc == V4L2_PIX_FMT_YUV422P) {
+                *size = PAGE_ALIGN(icd->width * icd->height); /* Y pages */
+                *size += PAGE_ALIGN(icd->width * icd->height / 2); /* U pages */
+                *size += PAGE_ALIGN(icd->width * icd->height / 2); /* V pages */
+        } else {
+                *size = icd->width * icd->height *
+                        ((icd->current_fmt->depth + 7) >> 3);
+        }
 
         if (0 == *count)
                 *count = 32;
@@ -145,6 +171,7 @@ static void free_buffer(struct videobuf_queue *vq, struct pxa_buffer *buf)
                 to_soc_camera_host(icd->dev.parent);
         struct pxa_camera_dev *pcdev = ici->priv;
         struct videobuf_dmabuf *dma = videobuf_to_dma(&buf->vb);
+        int i;
 
         BUG_ON(in_interrupt());
 
@@ -157,14 +184,62 @@ static void free_buffer(struct videobuf_queue *vq, struct pxa_buffer *buf)
         videobuf_dma_unmap(vq, dma);
         videobuf_dma_free(dma);
 
-        if (buf->sg_cpu)
-                dma_free_coherent(pcdev->dev, buf->sg_size, buf->sg_cpu,
-                                  buf->sg_dma);
-        buf->sg_cpu = NULL;
+        for (i = 0; i < ARRAY_SIZE(buf->dmas); i++) {
+                if (buf->dmas[i].sg_cpu)
+                        dma_free_coherent(pcdev->dev, buf->dmas[i].sg_size,
+                                          buf->dmas[i].sg_cpu,
+                                          buf->dmas[i].sg_dma);
+                buf->dmas[i].sg_cpu = NULL;
+        }
 
         buf->vb.state = VIDEOBUF_NEEDS_INIT;
 }
 
+static int pxa_init_dma_channel(struct pxa_camera_dev *pcdev,
+                                struct pxa_buffer *buf,
+                                struct videobuf_dmabuf *dma, int channel,
+                                int sglen, int sg_start, int cibr,
+                                unsigned int size)
+{
+        struct pxa_cam_dma *pxa_dma = &buf->dmas[channel];
+        int i;
+
+        if (pxa_dma->sg_cpu)
+                dma_free_coherent(pcdev->dev, pxa_dma->sg_size,
+                                  pxa_dma->sg_cpu, pxa_dma->sg_dma);
+
+        pxa_dma->sg_size = (sglen + 1) * sizeof(struct pxa_dma_desc);
+        pxa_dma->sg_cpu = dma_alloc_coherent(pcdev->dev, pxa_dma->sg_size,
+                                             &pxa_dma->sg_dma, GFP_KERNEL);
+        if (!pxa_dma->sg_cpu)
+                return -ENOMEM;
+
+        pxa_dma->sglen = sglen;
+
+        for (i = 0; i < sglen; i++) {
+                int sg_i = sg_start + i;
+                struct scatterlist *sg = dma->sglist;
+                unsigned int dma_len = sg_dma_len(&sg[sg_i]), xfer_len;
+
+                pxa_dma->sg_cpu[i].dsadr = pcdev->res->start + cibr;
+                pxa_dma->sg_cpu[i].dtadr = sg_dma_address(&sg[sg_i]);
+
+                /* PXA27x Developer's Manual 27.4.4.1: round up to 8 bytes */
+                xfer_len = (min(dma_len, size) + 7) & ~7;
+
+                pxa_dma->sg_cpu[i].dcmd =
+                        DCMD_FLOWSRC | DCMD_BURST8 | DCMD_INCTRGADDR | xfer_len;
+                size -= dma_len;
+                pxa_dma->sg_cpu[i].ddadr =
+                        pxa_dma->sg_dma + (i + 1) * sizeof(struct pxa_dma_desc);
+        }
+
+        pxa_dma->sg_cpu[sglen - 1].ddadr = DDADR_STOP;
+        pxa_dma->sg_cpu[sglen - 1].dcmd |= DCMD_ENDIRQEN;
+
+        return 0;
+}
+
 static int pxa_videobuf_prepare(struct videobuf_queue *vq,
                 struct videobuf_buffer *vb, enum v4l2_field field)
 {
@@ -173,7 +248,9 @@ static int pxa_videobuf_prepare(struct videobuf_queue *vq,
                 to_soc_camera_host(icd->dev.parent);
         struct pxa_camera_dev *pcdev = ici->priv;
         struct pxa_buffer *buf = container_of(vb, struct pxa_buffer, vb);
-        int i, ret;
+        int ret;
+        int sglen_y,  sglen_yu = 0, sglen_u = 0, sglen_v = 0;
+        int size_y, size_u = 0, size_v = 0;
 
         dev_dbg(&icd->dev, "%s (vb=0x%p) 0x%08lx %d\n", __func__,
                 vb, vb->baddr, vb->bsize);
@@ -218,49 +295,64 @@ static int pxa_videobuf_prepare(struct videobuf_queue *vq,
                 if (ret)
                         goto fail;
 
-                if (buf->sg_cpu)
-                        dma_free_coherent(pcdev->dev, buf->sg_size, buf->sg_cpu,
-                                          buf->sg_dma);
+                if (buf->fmt->fourcc == V4L2_PIX_FMT_YUV422P) {
+                        /* FIXME the calculations should be more precise */
+                        sglen_y = dma->sglen / 2;
+                        sglen_u = sglen_v = dma->sglen / 4 + 1;
+                        sglen_yu = sglen_y + sglen_u;
+                        size_y = size / 2;
+                        size_u = size_v = size / 4;
+                } else {
+                        sglen_y = dma->sglen;
+                        size_y = size;
+                }
+
+                /* init DMA for Y channel */
+                ret = pxa_init_dma_channel(pcdev, buf, dma, 0, sglen_y,
+                                           0, 0x28, size_y);
 
-                buf->sg_size = (dma->sglen + 1) * sizeof(struct pxa_dma_desc);
-                buf->sg_cpu = dma_alloc_coherent(pcdev->dev, buf->sg_size,
-                                                 &buf->sg_dma, GFP_KERNEL);
-                if (!buf->sg_cpu) {
-                        ret = -ENOMEM;
+                if (ret) {
+                        dev_err(pcdev->dev,
+                                "DMA initialization for Y/RGB failed\n");
                         goto fail;
                 }
 
-                dev_dbg(&icd->dev, "nents=%d size: %d sg=0x%p\n",
-                        dma->sglen, size, dma->sglist);
-                for (i = 0; i < dma->sglen; i++) {
-                        struct scatterlist *sg = dma->sglist;
-                        unsigned int dma_len = sg_dma_len(&sg[i]), xfer_len;
-
-                        /* CIBR0 */
-                        buf->sg_cpu[i].dsadr = pcdev->res->start + 0x28;
-                        buf->sg_cpu[i].dtadr = sg_dma_address(&sg[i]);
-                        /* PXA270 Developer's Manual 27.4.4.1:
-                         * round up to 8 bytes */
-                        xfer_len = (min(dma_len, size) + 7) & ~7;
-                        if (xfer_len & 7)
-                                dev_err(&icd->dev, "Unaligned buffer: "
-                                        "dma_len %u, size %u\n", dma_len, size);
-                        buf->sg_cpu[i].dcmd = DCMD_FLOWSRC | DCMD_BURST8 |
-                                DCMD_INCTRGADDR | xfer_len;
-                        size -= dma_len;
-                        buf->sg_cpu[i].ddadr = buf->sg_dma + (i + 1) *
-                                        sizeof(struct pxa_dma_desc);
+                if (buf->fmt->fourcc == V4L2_PIX_FMT_YUV422P) {
+                        /* init DMA for U channel */
+                        ret = pxa_init_dma_channel(pcdev, buf, dma, 1, sglen_u,
+                                                   sglen_y, 0x30, size_u);
+                        if (ret) {
+                                dev_err(pcdev->dev,
+                                        "DMA initialization for U failed\n");
+                                goto fail_u;
+                        }
+
+                        /* init DMA for V channel */
+                        ret = pxa_init_dma_channel(pcdev, buf, dma, 2, sglen_v,
+                                                   sglen_yu, 0x38, size_v);
+                        if (ret) {
+                                dev_err(pcdev->dev,
+                                        "DMA initialization for V failed\n");
+                                goto fail_v;
+                        }
                 }
-                buf->sg_cpu[dma->sglen - 1].ddadr = DDADR_STOP;
-                buf->sg_cpu[dma->sglen - 1].dcmd |= DCMD_ENDIRQEN;
 
                 vb->state = VIDEOBUF_PREPARED;
         }
 
         buf->inwork = 0;
+        buf->active_dma = DMA_Y;
+        if (buf->fmt->fourcc == V4L2_PIX_FMT_YUV422P)
+                buf->active_dma |= DMA_U | DMA_V;
 
         return 0;
 
+fail_v:
+        dma_free_coherent(pcdev->dev, buf->dmas[1].sg_size,
+                          buf->dmas[1].sg_cpu, buf->dmas[1].sg_dma);
+fail_u:
+        dma_free_coherent(pcdev->dev, buf->dmas[0].sg_size,
+                          buf->dmas[0].sg_cpu, buf->dmas[0].sg_dma);
 fail:
         free_buffer(vq, buf);
 out:
@@ -277,8 +369,6 @@ static void pxa_videobuf_queue(struct videobuf_queue *vq,
         struct pxa_camera_dev *pcdev = ici->priv;
         struct pxa_buffer *buf = container_of(vb, struct pxa_buffer, vb);
         struct pxa_buffer *active;
-        struct videobuf_dmabuf *dma = videobuf_to_dma(vb);
-        int nents = dma->sglen;
         unsigned long flags;
 
         dev_dbg(&icd->dev, "%s (vb=0x%p) 0x%08lx %d\n", __func__,
@@ -292,59 +382,86 @@ static void pxa_videobuf_queue(struct videobuf_queue *vq,
 
         if (!active) {
                 CIFR |= CIFR_RESET_F;
-                DDADR(pcdev->dma_chan_y) = buf->sg_dma;
-                DCSR(pcdev->dma_chan_y) = DCSR_RUN;
+                DDADR(pcdev->dma_chans[0]) = buf->dmas[0].sg_dma;
+                DCSR(pcdev->dma_chans[0]) = DCSR_RUN;
+
+                if (buf->fmt->fourcc == V4L2_PIX_FMT_YUV422P) {
+                        DDADR(pcdev->dma_chans[1]) = buf->dmas[1].sg_dma;
+                        DCSR(pcdev->dma_chans[1]) = DCSR_RUN;
+
+                        DDADR(pcdev->dma_chans[2]) = buf->dmas[2].sg_dma;
+                        DCSR(pcdev->dma_chans[2]) = DCSR_RUN;
+                }
+
                 pcdev->active = buf;
                 CICR0 |= CICR0_ENB;
         } else {
-                struct videobuf_dmabuf *active_dma =
-                        videobuf_to_dma(&active->vb);
-                /* Stop DMA engine */
-                DCSR(pcdev->dma_chan_y) = 0;
-
-                /* Add the descriptors we just initialized to the currently
-                 * running chain
-                 */
-                active->sg_cpu[active_dma->sglen - 1].ddadr = buf->sg_dma;
-
-                /* Setup a dummy descriptor with the DMA engines current
-                 * state
-                 */
-                /* CIBR0 */
-                buf->sg_cpu[nents].dsadr = pcdev->res->start + 0x28;
-                buf->sg_cpu[nents].dtadr = DTADR(pcdev->dma_chan_y);
-                buf->sg_cpu[nents].dcmd = DCMD(pcdev->dma_chan_y);
-
-                if (DDADR(pcdev->dma_chan_y) == DDADR_STOP) {
-                        /* The DMA engine is on the last descriptor, set the
-                         * next descriptors address to the descriptors
-                         * we just initialized
+                struct pxa_cam_dma *buf_dma;
+                struct pxa_cam_dma *act_dma;
+                int channels = 1;
+                int nents;
+                int i;
+
+                if (buf->fmt->fourcc == V4L2_PIX_FMT_YUV422P)
+                        channels = 3;
+
+                for (i = 0; i < channels; i++) {
+                        buf_dma = &buf->dmas[i];
+                        act_dma = &active->dmas[i];
+                        nents = buf_dma->sglen;
+
+                        /* Stop DMA engine */
+                        DCSR(pcdev->dma_chans[i]) = 0;
+
+                        /* Add the descriptors we just initialized to
+                           the currently running chain */
+                        act_dma->sg_cpu[act_dma->sglen - 1].ddadr =
+                                buf_dma->sg_dma;
+
+                        /* Setup a dummy descriptor with the DMA engines current
+                         * state
                          */
-                        buf->sg_cpu[nents].ddadr = buf->sg_dma;
-                } else {
-                        buf->sg_cpu[nents].ddadr = DDADR(pcdev->dma_chan_y);
+                        buf_dma->sg_cpu[nents].dsadr =
+                                pcdev->res->start + 0x28 + i*8; /* CIBRx */
+                        buf_dma->sg_cpu[nents].dtadr =
+                                DTADR(pcdev->dma_chans[i]);
+                        buf_dma->sg_cpu[nents].dcmd =
+                                DCMD(pcdev->dma_chans[i]);
+
+                        if (DDADR(pcdev->dma_chans[i]) == DDADR_STOP) {
+                                /* The DMA engine is on the last
+                                   descriptor, set the next descriptors
+                                   address to the descriptors we just
+                                   initialized */
+                                buf_dma->sg_cpu[nents].ddadr = buf_dma->sg_dma;
+                        } else {
+                                buf_dma->sg_cpu[nents].ddadr =
+                                        DDADR(pcdev->dma_chans[i]);
+                        }
+
+                        /* The next descriptor is the dummy descriptor */
+                        DDADR(pcdev->dma_chans[i]) = buf_dma->sg_dma + nents *
+                                sizeof(struct pxa_dma_desc);
+
+                        DCSR(pcdev->dma_chans[i]) = DCSR_RUN;
                 }
-
-                /* The next descriptor is the dummy descriptor */
-                DDADR(pcdev->dma_chan_y) = buf->sg_dma + nents *
-                        sizeof(struct pxa_dma_desc);
-
 #ifdef DEBUG
-                if (CISR & CISR_IFO_0) {
+                if (CISR & (CISR_IFO_0 | CISR_IFO_1 | CISR_IFO_2)) {
                         dev_warn(pcdev->dev, "FIFO overrun\n");
-                        DDADR(pcdev->dma_chan_y) = pcdev->active->sg_dma;
+                        for (i = 0; i < channels; i++)
+                                DDADR(pcdev->dma_chans[i]) =
+                                        pcdev->active->dmas[i].sg_dma;
 
                         CICR0 &= ~CICR0_ENB;
                         CIFR |= CIFR_RESET_F;
-                        DCSR(pcdev->dma_chan_y) = DCSR_RUN;
+                        for (i = 0; i < channels; i++)
+                                DCSR(pcdev->dma_chans[i]) = DCSR_RUN;
                         CICR0 |= CICR0_ENB;
-                } else
+                }
 #endif
-                        DCSR(pcdev->dma_chan_y) = DCSR_RUN;
         }
 
         spin_unlock_irqrestore(&pcdev->lock, flags);
-
 }
 
 static void pxa_videobuf_release(struct videobuf_queue *vq,
@@ -376,9 +493,33 @@ static void pxa_videobuf_release(struct videobuf_queue *vq,
         free_buffer(vq, buf);
 }
 
-static void pxa_camera_dma_irq_y(int channel, void *data)
+static void pxa_camera_wakeup(struct pxa_camera_dev *pcdev,
+                              struct videobuf_buffer *vb,
+                              struct pxa_buffer *buf)
+{
+        /* _init is used to debug races, see comment in pxa_camera_reqbufs() */
+        list_del_init(&vb->queue);
+        vb->state = VIDEOBUF_DONE;
+        do_gettimeofday(&vb->ts);
+        vb->field_count++;
+        wake_up(&vb->done);
+
+        if (list_empty(&pcdev->capture)) {
+                pcdev->active = NULL;
+                DCSR(pcdev->dma_chans[0]) = 0;
+                DCSR(pcdev->dma_chans[1]) = 0;
+                DCSR(pcdev->dma_chans[2]) = 0;
+                CICR0 &= ~CICR0_ENB;
+                return;
+        }
+
+        pcdev->active = list_entry(pcdev->capture.next,
+                                   struct pxa_buffer, vb.queue);
+}
+
+static void pxa_camera_dma_irq(int channel, struct pxa_camera_dev *pcdev,
+                               enum pxa_camera_active_dma act_dma)
 {
-        struct pxa_camera_dev *pcdev = data;
         struct pxa_buffer *buf;
         unsigned long flags;
         unsigned int status;
@@ -386,8 +527,8 @@ static void pxa_camera_dma_irq_y(int channel, void *data)
 
         spin_lock_irqsave(&pcdev->lock, flags);
 
-        status = DCSR(pcdev->dma_chan_y);
-        DCSR(pcdev->dma_chan_y) = status;
+        status = DCSR(channel);
+        DCSR(channel) = status | DCSR_ENDINTR;
 
         if (status & DCSR_BUSERR) {
                 dev_err(pcdev->dev, "DMA Bus Error IRQ!\n");
@@ -411,27 +552,32 @@ static void pxa_camera_dma_irq_y(int channel, void *data)
         dev_dbg(pcdev->dev, "%s (vb=0x%p) 0x%08lx %d\n", __func__,
                 vb, vb->baddr, vb->bsize);
 
-        /* _init is used to debug races, see comment in pxa_camera_reqbufs() */
-        list_del_init(&vb->queue);
-        vb->state = VIDEOBUF_DONE;
-        do_gettimeofday(&vb->ts);
-        vb->field_count++;
-        wake_up(&vb->done);
-
-        if (list_empty(&pcdev->capture)) {
-                pcdev->active = NULL;
-                DCSR(pcdev->dma_chan_y) = 0;
-                CICR0 &= ~CICR0_ENB;
-                goto out;
-        }
-
-        pcdev->active = list_entry(pcdev->capture.next, struct pxa_buffer,
-                                   vb.queue);
+        buf->active_dma &= ~act_dma;
+        if (!buf->active_dma)
+                pxa_camera_wakeup(pcdev, vb, buf);
 
 out:
         spin_unlock_irqrestore(&pcdev->lock, flags);
 }
 
+static void pxa_camera_dma_irq_y(int channel, void *data)
+{
+        struct pxa_camera_dev *pcdev = data;
+        pxa_camera_dma_irq(channel, pcdev, DMA_Y);
+}
+
+static void pxa_camera_dma_irq_u(int channel, void *data)
+{
+        struct pxa_camera_dev *pcdev = data;
+        pxa_camera_dma_irq(channel, pcdev, DMA_U);
+}
+
+static void pxa_camera_dma_irq_v(int channel, void *data)
+{
+        struct pxa_camera_dev *pcdev = data;
+        pxa_camera_dma_irq(channel, pcdev, DMA_V);
+}
+
 static struct videobuf_queue_ops pxa_videobuf_ops = {
         .buf_setup      = pxa_videobuf_setup,
         .buf_prepare    = pxa_videobuf_prepare,
@@ -525,7 +671,6 @@ static irqreturn_t pxa_camera_irq(int irq, void *data)
         dev_dbg(pcdev->dev, "Camera interrupt status 0x%x\n", status);
 
         CISR = status;
-
         return IRQ_HANDLED;
 }
 
@@ -571,8 +716,11 @@ static void pxa_camera_remove_device(struct soc_camera_device *icd)
 
         /* disable capture, disable interrupts */
         CICR0 = 0x3ff;
+
         /* Stop DMA engine */
-        DCSR(pcdev->dma_chan_y) = 0;
+        DCSR(pcdev->dma_chans[0]) = 0;
+        DCSR(pcdev->dma_chans[1]) = 0;
+        DCSR(pcdev->dma_chans[2]) = 0;
 
         icd->ops->release(icd);
 
@@ -625,7 +773,7 @@ static int pxa_camera_set_bus_param(struct soc_camera_device *icd, __u32 pixfmt)
                 to_soc_camera_host(icd->dev.parent);
         struct pxa_camera_dev *pcdev = ici->priv;
         unsigned long dw, bpp, bus_flags, camera_flags, common_flags;
-        u32 cicr0, cicr4 = 0;
+        u32 cicr0, cicr1, cicr4 = 0;
         int ret = test_platform_param(pcdev, icd->buswidth, &bus_flags);
 
         if (ret < 0)
@@ -702,7 +850,25 @@ static int pxa_camera_set_bus_param(struct soc_camera_device *icd, __u32 pixfmt)
         cicr0 = CICR0;
         if (cicr0 & CICR0_ENB)
                 CICR0 = cicr0 & ~CICR0_ENB;
-        CICR1 = CICR1_PPL_VAL(icd->width - 1) | bpp | dw;
+
+        cicr1 = CICR1_PPL_VAL(icd->width - 1) | bpp | dw;
+
+        switch (pixfmt) {
+        case V4L2_PIX_FMT_YUV422P:
+                cicr1 |= CICR1_YCBCR_F;
+        case V4L2_PIX_FMT_YUYV:
+                cicr1 |= CICR1_COLOR_SP_VAL(2);
+                break;
+        case V4L2_PIX_FMT_RGB555:
+                cicr1 |= CICR1_RGB_BPP_VAL(1) | CICR1_RGBT_CONV_VAL(2) |
+                        CICR1_TBIT | CICR1_COLOR_SP_VAL(1);
+                break;
+        case V4L2_PIX_FMT_RGB565:
+                cicr1 |= CICR1_COLOR_SP_VAL(1) | CICR1_RGB_BPP_VAL(2);
+                break;
+        }
+
+        CICR1 = cicr1;
         CICR2 = 0;
         CICR3 = CICR3_LPF_VAL(icd->height - 1) |
                 CICR3_BFW_VAL(min((unsigned short)255, icd->y_skip_top));
@@ -905,16 +1071,36 @@ static int pxa_camera_probe(struct platform_device *pdev)
         pcdev->dev = &pdev->dev;
 
         /* request dma */
-        pcdev->dma_chan_y = pxa_request_dma("CI_Y", DMA_PRIO_HIGH,
-                                            pxa_camera_dma_irq_y, pcdev);
-        if (pcdev->dma_chan_y < 0) {
+        pcdev->dma_chans[0] = pxa_request_dma("CI_Y", DMA_PRIO_HIGH,
+                                              pxa_camera_dma_irq_y, pcdev);
+        if (pcdev->dma_chans[0] < 0) {
                 dev_err(pcdev->dev, "Can't request DMA for Y\n");
                 err = -ENOMEM;
                 goto exit_iounmap;
         }
-        dev_dbg(pcdev->dev, "got DMA channel %d\n", pcdev->dma_chan_y);
+        dev_dbg(pcdev->dev, "got DMA channel %d\n", pcdev->dma_chans[0]);
+
+        pcdev->dma_chans[1] = pxa_request_dma("CI_U", DMA_PRIO_HIGH,
+                                              pxa_camera_dma_irq_u, pcdev);
+        if (pcdev->dma_chans[1] < 0) {
+                dev_err(pcdev->dev, "Can't request DMA for U\n");
+                err = -ENOMEM;
+                goto exit_free_dma_y;
+        }
+        dev_dbg(pcdev->dev, "got DMA channel (U) %d\n", pcdev->dma_chans[1]);
+
+        pcdev->dma_chans[2] = pxa_request_dma("CI_V", DMA_PRIO_HIGH,
+                                              pxa_camera_dma_irq_v, pcdev);
+        if (pcdev->dma_chans[0] < 0) {
+                dev_err(pcdev->dev, "Can't request DMA for V\n");
+                err = -ENOMEM;
+                goto exit_free_dma_u;
+        }
+        dev_dbg(pcdev->dev, "got DMA channel (V) %d\n", pcdev->dma_chans[2]);
 
-        DRCMR68 = pcdev->dma_chan_y  | DRCMR_MAPVLD;
+        DRCMR68 = pcdev->dma_chans[0] | DRCMR_MAPVLD;
+        DRCMR69 = pcdev->dma_chans[1] | DRCMR_MAPVLD;
+        DRCMR70 = pcdev->dma_chans[2] | DRCMR_MAPVLD;
 
         /* request irq */
         err = request_irq(pcdev->irq, pxa_camera_irq, 0, PXA_CAM_DRV_NAME,
@@ -936,7 +1122,11 @@ static int pxa_camera_probe(struct platform_device *pdev)
 exit_free_irq:
         free_irq(pcdev->irq, pcdev);
 exit_free_dma:
-        pxa_free_dma(pcdev->dma_chan_y);
+        pxa_free_dma(pcdev->dma_chans[2]);
+exit_free_dma_u:
+        pxa_free_dma(pcdev->dma_chans[1]);
+exit_free_dma_y:
+        pxa_free_dma(pcdev->dma_chans[0]);
 exit_iounmap:
         iounmap(base);
 exit_release:
@@ -956,7 +1146,9 @@ static int __devexit pxa_camera_remove(struct platform_device *pdev)
 
         clk_put(pcdev->clk);
 
-        pxa_free_dma(pcdev->dma_chan_y);
+        pxa_free_dma(pcdev->dma_chans[0]);
+        pxa_free_dma(pcdev->dma_chans[1]);
+        pxa_free_dma(pcdev->dma_chans[2]);
         free_irq(pcdev->irq, pcdev);
 
         soc_camera_host_unregister(&pxa_soc_camera_host);