From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from mx3.redhat.com (mx3.redhat.com [172.16.48.32]) by int-mx1.corp.redhat.com (8.13.1/8.13.1) with ESMTP id m385nLO7008455 for ; Tue, 8 Apr 2008 01:49:21 -0400 Received: from mxout10.netvision.net.il (mxout10.netvision.net.il [194.90.6.38]) by mx3.redhat.com (8.13.8/8.13.8) with ESMTP id m385mvGa025890 for ; Tue, 8 Apr 2008 01:48:58 -0400 Received: from mail.linux-boards.com ([62.90.235.247]) by mxout10.netvision.net.il (Sun Java System Messaging Server 6.2-8.04 (built Feb 28 2007)) with ESMTP id <0JYZ00253S98Q160@mxout10.netvision.net.il> for video4linux-list@redhat.com; Tue, 08 Apr 2008 08:51:09 +0300 (IDT) Date: Tue, 08 Apr 2008 08:48:50 +0300 From: Mike Rapoport To: mchehab@infradead.org Message-id: <47FB0742.1060000@compulab.co.il> MIME-version: 1.0 Content-type: text/plain; charset=ISO-8859-1 Content-transfer-encoding: 7BIT Cc: video4linux-list@redhat.com, Guennadi Liakhovetski Subject: PATCH v2] pxa_camera: Add support for YUV modes List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: video4linux-list-bounces@redhat.com Errors-To: video4linux-list-bounces@redhat.com List-ID: This patch adds support for YUV packed and planar capture for pxa_camera Signed-off-by: Mike Rapoport Signed-off-by: Guennadi Liakhovetski diff -r 0776e4801991 linux/drivers/media/video/pxa_camera.c --- a/linux/drivers/media/video/pxa_camera.c Fri Mar 28 14:52:44 2008 -0300 +++ b/linux/drivers/media/video/pxa_camera.c Sun Apr 06 09:41:22 2008 +0300 @@ -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 vid 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_ 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()); @@ -157,12 +184,60 @@ static void free_buffer(struct videobuf_ 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, @@ -173,7 +248,9 @@ static int pxa_videobuf_prepare(struct v 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", __FUNCTION__, vb, vb->baddr, vb->bsize); @@ -218,49 +295,64 @@ static int pxa_videobuf_prepare(struct v if (ret) goto fail; - if (buf->sg_cpu) - dma_free_coherent(pcdev->dev, buf->sg_size, buf->sg_cpu, - buf->sg_dma); - - 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 (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); + + 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 vi 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", __FUNCTION__, @@ -292,59 +382,86 @@ static void pxa_videobuf_queue(struct vi 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[0]; + 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, @@ -376,41 +493,10 @@ static void pxa_videobuf_release(struct free_buffer(vq, buf); } -static void pxa_camera_dma_irq_y(int channel, void *data) -{ - struct pxa_camera_dev *pcdev = data; - struct pxa_buffer *buf; - unsigned long flags; - unsigned int status; - struct videobuf_buffer *vb; - - spin_lock_irqsave(&pcdev->lock, flags); - - status = DCSR(pcdev->dma_chan_y); - DCSR(pcdev->dma_chan_y) = status; - - if (status & DCSR_BUSERR) { - dev_err(pcdev->dev, "DMA Bus Error IRQ!\n"); - goto out; - } - - if (!(status & DCSR_ENDINTR)) { - dev_err(pcdev->dev, "Unknown DMA IRQ source, " - "status: 0x%08x\n", status); - goto out; - } - - if (!pcdev->active) { - dev_err(pcdev->dev, "DMA End IRQ with no active buffer!\n"); - goto out; - } - - vb = &pcdev->active->vb; - buf = container_of(vb, struct pxa_buffer, vb); - WARN_ON(buf->inwork || list_empty(&vb->queue)); - dev_dbg(pcdev->dev, "%s (vb=0x%p) 0x%08lx %d\n", __FUNCTION__, - vb, vb->baddr, vb->bsize); - +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; @@ -420,16 +506,76 @@ static void pxa_camera_dma_irq_y(int cha if (list_empty(&pcdev->capture)) { pcdev->active = NULL; - DCSR(pcdev->dma_chan_y) = 0; + 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_buffer *buf; + unsigned long flags; + unsigned int status; + struct videobuf_buffer *vb; + + spin_lock_irqsave(&pcdev->lock, flags); + + status = DCSR(channel); + DCSR(channel) = status | DCSR_ENDINTR; + + if (status & DCSR_BUSERR) { + dev_err(pcdev->dev, "DMA Bus Error IRQ!\n"); goto out; } - pcdev->active = list_entry(pcdev->capture.next, struct pxa_buffer, - vb.queue); + if (!(status & DCSR_ENDINTR)) { + dev_err(pcdev->dev, "Unknown DMA IRQ source, " + "status: 0x%08x\n", status); + goto out; + } + + if (!pcdev->active) { + dev_err(pcdev->dev, "DMA End IRQ with no active buffer!\n"); + goto out; + } + + vb = &pcdev->active->vb; + buf = container_of(vb, struct pxa_buffer, vb); + WARN_ON(buf->inwork || list_empty(&vb->queue)); + dev_dbg(pcdev->dev, "%s (vb=0x%p) 0x%08lx %d\n", __FUNCTION__, + vb, vb->baddr, vb->bsize); + + 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 = { @@ -525,7 +671,6 @@ static irqreturn_t pxa_camera_irq(int ir 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(str /* 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(stru 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(stru 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)); @@ -890,16 +1056,36 @@ static int pxa_camera_probe(struct platf 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); - - DRCMR68 = pcdev->dma_chan_y | DRCMR_MAPVLD; + 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_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, @@ -921,7 +1107,11 @@ exit_free_irq: 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: @@ -941,7 +1131,9 @@ static int __devexit pxa_camera_remove(s 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); -- video4linux-list mailing list Unsubscribe mailto:video4linux-list-request@redhat.com?subject=unsubscribe https://www.redhat.com/mailman/listinfo/video4linux-list