[media] media: coda: fix IRAM/AXI handling for i.MX53

This uses the ARCH_MXC specific iram_alloc API to allocate a work
buffer in the SoC's on-chip SRAM and sets up the AXI_SRAM_USE
register. In the future, the allocation will be converted to use
the genalloc API.

Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Tested-by: Javier Martin <javier.martin@vista-silicon.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

diff --git a/drivers/media/platform/Kconfig b/drivers/media/platform/Kconfig
index 682594e..f588d62 100644 (file)
--- a/drivers/media/platform/Kconfig
+++ b/drivers/media/platform/Kconfig
@@ -130,9 +130,10 @@ if V4L_MEM2MEM_DRIVERS
 
 config VIDEO_CODA
        tristate "Chips&Media Coda multi-standard codec IP"
-       depends on VIDEO_DEV && VIDEO_V4L2
+       depends on VIDEO_DEV && VIDEO_V4L2 && ARCH_MXC
        select VIDEOBUF2_DMA_CONTIG
        select V4L2_MEM2MEM_DEV
+       select IRAM_ALLOC if SOC_IMX53
        ---help---
           Coda is a range of video codec IPs that supports
           H.264, MPEG-4, and other video formats.

diff --git a/drivers/media/platform/coda.c b/drivers/media/platform/coda.c
index a560c0d..53816d0 100644 (file)
--- a/drivers/media/platform/coda.c
+++ b/drivers/media/platform/coda.c
@@ -24,6 +24,7 @@
 #include <linux/videodev2.h>
 #include <linux/of.h>
 
+#include <mach/iram.h>
 #include <media/v4l2-ctrls.h>
 #include <media/v4l2-device.h>
 #include <media/v4l2-ioctl.h>
@@ -42,6 +43,7 @@
 #define CODA7_WORK_BUF_SIZE    (512 * 1024 + CODA_FMO_BUF_SIZE * 8 * 1024)
 #define CODA_PARA_BUF_SIZE     (10 * 1024)
 #define CODA_ISRAM_SIZE        (2048 * 2)
+#define CODA7_IRAM_SIZE                0x14000 /* 81920 bytes */
 
 #define CODA_OUTPUT_BUFS       4
 #define CODA_CAPTURE_BUFS      2
@@ -127,6 +129,7 @@ struct coda_dev {
 
        struct coda_aux_buf     codebuf;
        struct coda_aux_buf     workbuf;
+       long unsigned int       iram_paddr;
 
        spinlock_t              irqlock;
        struct mutex            dev_mutex;
@@ -715,6 +718,13 @@ static void coda_device_run(void *m2m_priv)
        coda_write(dev, pic_stream_buffer_addr, CODA_CMD_ENC_PIC_BB_START);
        coda_write(dev, pic_stream_buffer_size / 1024,
                   CODA_CMD_ENC_PIC_BB_SIZE);
+
+       if (dev->devtype->product == CODA_7541) {
+               coda_write(dev, CODA7_USE_BIT_ENABLE | CODA7_USE_HOST_BIT_ENABLE |
+                               CODA7_USE_ME_ENABLE | CODA7_USE_HOST_ME_ENABLE,
+                               CODA7_REG_BIT_AXI_SRAM_USE);
+       }
+
        coda_command_async(ctx, CODA_COMMAND_PIC_RUN);
 }
 
@@ -946,8 +956,10 @@ static int coda_start_streaming(struct vb2_queue *q, unsigned int count)
                        CODA7_STREAM_BUF_PIC_RESET, CODA_REG_BIT_STREAM_CTRL);
        }
 
-       /* Configure the coda */
-       coda_write(dev, 0xffff4c00, CODA_REG_BIT_SEARCH_RAM_BASE_ADDR);
+       if (dev->devtype->product == CODA_DX6) {
+               /* Configure the coda */
+               coda_write(dev, dev->iram_paddr, CODADX6_REG_BIT_SEARCH_RAM_BASE_ADDR);
+       }
 
        /* Could set rotation here if needed */
        switch (dev->devtype->product) {
@@ -1022,7 +1034,12 @@ static int coda_start_streaming(struct vb2_queue *q, unsigned int count)
                value  = (FMO_SLICE_SAVE_BUF_SIZE << 7);
                value |= (0 & CODA_FMOPARAM_TYPE_MASK) << CODA_FMOPARAM_TYPE_OFFSET;
                value |=  0 & CODA_FMOPARAM_SLICENUM_MASK;
-               coda_write(dev, value, CODA_CMD_ENC_SEQ_FMO);
+               if (dev->devtype->product == CODA_DX6) {
+                       coda_write(dev, value, CODADX6_CMD_ENC_SEQ_FMO);
+               } else {
+                       coda_write(dev, dev->iram_paddr, CODA7_CMD_ENC_SEQ_SEARCH_BASE);
+                       coda_write(dev, 48 * 1024, CODA7_CMD_ENC_SEQ_SEARCH_SIZE);
+               }
        }
 
        if (coda_command_sync(ctx, CODA_COMMAND_SEQ_INIT)) {
@@ -1052,7 +1069,15 @@ static int coda_start_streaming(struct vb2_queue *q, unsigned int count)
        }
 
        coda_write(dev, src_vq->num_buffers, CODA_CMD_SET_FRAME_BUF_NUM);
-       coda_write(dev, q_data_src->width, CODA_CMD_SET_FRAME_BUF_STRIDE);
+       coda_write(dev, round_up(q_data_src->width, 8), CODA_CMD_SET_FRAME_BUF_STRIDE);
+       if (dev->devtype->product != CODA_DX6) {
+               coda_write(dev, round_up(q_data_src->width, 8), CODA7_CMD_SET_FRAME_SOURCE_BUF_STRIDE);
+               coda_write(dev, dev->iram_paddr + 48 * 1024, CODA7_CMD_SET_FRAME_AXI_DBKY_ADDR);
+               coda_write(dev, dev->iram_paddr + 53 * 1024, CODA7_CMD_SET_FRAME_AXI_DBKC_ADDR);
+               coda_write(dev, dev->iram_paddr + 58 * 1024, CODA7_CMD_SET_FRAME_AXI_BIT_ADDR);
+               coda_write(dev, dev->iram_paddr + 68 * 1024, CODA7_CMD_SET_FRAME_AXI_IPACDC_ADDR);
+               coda_write(dev, 0x0, CODA7_CMD_SET_FRAME_AXI_OVL_ADDR);
+       }
        if (coda_command_sync(ctx, CODA_COMMAND_SET_FRAME_BUF)) {
                v4l2_err(v4l2_dev, "CODA_COMMAND_SET_FRAME_BUF timeout\n");
                return -ETIMEDOUT;
@@ -1583,6 +1608,10 @@ static int coda_hw_init(struct coda_dev *dev)
                coda_write(dev, CODA7_STREAM_BUF_PIC_FLUSH, CODA_REG_BIT_STREAM_CTRL);
        }
        coda_write(dev, 0, CODA_REG_BIT_FRAME_MEM_CTRL);
+
+       if (dev->devtype->product != CODA_DX6)
+               coda_write(dev, 0, CODA7_REG_BIT_AXI_SRAM_USE);
+
        coda_write(dev, CODA_INT_INTERRUPT_ENABLE,
                      CODA_REG_BIT_INT_ENABLE);
 
@@ -1852,6 +1881,19 @@ static int __devinit coda_probe(struct platform_device *pdev)
                return -ENOMEM;
        }
 
+       if (dev->devtype->product == CODA_DX6) {
+               dev->iram_paddr = 0xffff4c00;
+       } else {
+               void __iomem *iram_vaddr;
+
+               iram_vaddr = iram_alloc(CODA7_IRAM_SIZE,
+                                       &dev->iram_paddr);
+               if (!iram_vaddr) {
+                       dev_err(&pdev->dev, "unable to alloc iram\n");
+                       return -ENOMEM;
+               }
+       }
+
        platform_set_drvdata(pdev, dev);
 
        return coda_firmware_request(dev);
@@ -1867,6 +1909,8 @@ static int coda_remove(struct platform_device *pdev)
        if (dev->alloc_ctx)
                vb2_dma_contig_cleanup_ctx(dev->alloc_ctx);
        v4l2_device_unregister(&dev->v4l2_dev);
+       if (dev->iram_paddr)
+               iram_free(dev->iram_paddr, CODA7_IRAM_SIZE);
        if (dev->codebuf.vaddr)
                dma_free_coherent(&pdev->dev, dev->codebuf.size,
                                  &dev->codebuf.vaddr, dev->codebuf.paddr);

diff --git a/drivers/media/platform/coda.h b/drivers/media/platform/coda.h
index 3fbb315..3324010 100644 (file)
--- a/drivers/media/platform/coda.h
+++ b/drivers/media/platform/coda.h
@@ -45,7 +45,12 @@
 #define                CODA_IMAGE_ENDIAN_SELECT        (1 << 0)
 #define CODA_REG_BIT_RD_PTR(x)                 (0x120 + 8 * (x))
 #define CODA_REG_BIT_WR_PTR(x)                 (0x124 + 8 * (x))
-#define CODA_REG_BIT_SEARCH_RAM_BASE_ADDR      0x140
+#define CODADX6_REG_BIT_SEARCH_RAM_BASE_ADDR   0x140
+#define CODA7_REG_BIT_AXI_SRAM_USE             0x140
+#define                CODA7_USE_BIT_ENABLE            (1 << 0)
+#define                CODA7_USE_HOST_BIT_ENABLE       (1 << 7)
+#define                CODA7_USE_ME_ENABLE             (1 << 4)
+#define                CODA7_USE_HOST_ME_ENABLE        (1 << 11)
 #define CODA_REG_BIT_BUSY                      0x160
 #define                CODA_REG_BIT_BUSY_FLAG          1
 #define CODA_REG_BIT_RUN_COMMAND               0x164
@@ -162,11 +167,13 @@
 #define                CODA_RATECONTROL_ENABLE_MASK                    0x01
 #define CODA_CMD_ENC_SEQ_RC_BUF_SIZE                           0x1b0
 #define CODA_CMD_ENC_SEQ_INTRA_REFRESH                         0x1b4
-#define CODA_CMD_ENC_SEQ_FMO                                   0x1b8
+#define CODADX6_CMD_ENC_SEQ_FMO                                        0x1b8
 #define                CODA_FMOPARAM_TYPE_OFFSET                       4
 #define                CODA_FMOPARAM_TYPE_MASK                         1
 #define                CODA_FMOPARAM_SLICENUM_OFFSET                   0
 #define                CODA_FMOPARAM_SLICENUM_MASK                     0x0f
+#define CODA7_CMD_ENC_SEQ_SEARCH_BASE                          0x1b8
+#define CODA7_CMD_ENC_SEQ_SEARCH_SIZE                          0x1bc
 #define CODA_CMD_ENC_SEQ_RC_QP_MAX                             0x1c8
 #define                CODA_QPMAX_OFFSET                               0
 #define                CODA_QPMAX_MASK                                 0x3f
@@ -189,8 +196,14 @@
 #define CODA_RET_ENC_PIC_FLAG          0x1d0
 
 /* Set Frame Buffer */
-#define CODA_CMD_SET_FRAME_BUF_NUM     0x180
-#define CODA_CMD_SET_FRAME_BUF_STRIDE  0x184
+#define CODA_CMD_SET_FRAME_BUF_NUM             0x180
+#define CODA_CMD_SET_FRAME_BUF_STRIDE          0x184
+#define CODA7_CMD_SET_FRAME_AXI_BIT_ADDR       0x190
+#define CODA7_CMD_SET_FRAME_AXI_IPACDC_ADDR    0x194
+#define CODA7_CMD_SET_FRAME_AXI_DBKY_ADDR      0x198
+#define CODA7_CMD_SET_FRAME_AXI_DBKC_ADDR      0x19c
+#define CODA7_CMD_SET_FRAME_AXI_OVL_ADDR       0x1a0
+#define CODA7_CMD_SET_FRAME_SOURCE_BUF_STRIDE  0x1a8
 
 /* Encoder Header */
 #define CODA_CMD_ENC_HEADER_CODE       0x180