Hi Philipp,
thank you for your patch. Please, find some comments below.
On 24 August 2012 18:17, Philipp Zabel <[email protected]> wrote:
> This uses the genalloc API to allocate a work buffer in the SoC's
> on-chip SRAM and sets up the AXI_SRAM_USE register.
>
> Signed-off-by: Philipp Zabel <[email protected]>
> ---
> drivers/media/video/Kconfig | 3 ++-
> drivers/media/video/coda.c | 61
> ++++++++++++++++++++++++++++++++++++++++---
> drivers/media/video/coda.h | 21 ++++++++++++---
> 3 files changed, 76 insertions(+), 9 deletions(-)
>
> diff --git a/drivers/media/video/Kconfig b/drivers/media/video/Kconfig
> index 9cebf7b..1c40b1b 100644
> --- a/drivers/media/video/Kconfig
> +++ b/drivers/media/video/Kconfig
> @@ -1181,9 +1181,10 @@ config VIDEO_MEM2MEM_TESTDEV
>
> 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/video/coda.c b/drivers/media/video/coda.c
> index aa12b7b..2e2e8c5 100644
> --- a/drivers/media/video/coda.c
> +++ b/drivers/media/video/coda.c
> @@ -14,6 +14,7 @@
> #include <linux/clk.h>
> #include <linux/delay.h>
> #include <linux/firmware.h>
> +#include <linux/genalloc.h>
> #include <linux/interrupt.h>
> #include <linux/io.h>
> #include <linux/irq.h>
> @@ -24,6 +25,7 @@
> #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 +44,7 @@
> #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 +130,9 @@ struct coda_dev {
>
> struct coda_aux_buf codebuf;
> struct coda_aux_buf workbuf;
> + struct gen_pool *iram_pool;
> + long unsigned int iram_vaddr;
> + long unsigned int iram_paddr;
>
> spinlock_t irqlock;
> struct mutex dev_mutex;
> @@ -715,6 +721,13 @@ 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 +959,10 @@ 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 +1037,12 @@ 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 +1072,15 @@ 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;
> @@ -1586,6 +1614,10 @@ 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);
>
> @@ -1854,6 +1886,25 @@ static int __devinit coda_probe(struct platform_device
> *pdev)
> return -ENOMEM;
> }
>
> + if (dev->devtype->product == CODA_DX6) {
> + dev->iram_paddr = 0xffff4c00;
> + } else {
> + struct device_node *np = pdev->dev.of_node;
> +
> + dev->iram_pool = of_get_named_gen_pool(np, "iram", 0);
"of_get_named_gen_pool" doesn't exist in linux_media 'for_v3.7'.
Moreover, nobody registers an IRAM through the function 'iram_init' in
mainline [1] so this will never work.
You will have to wait until this functionality gets merge before
sending this patch.
> + if (!iram_pool) {
I think you meant 'dev->iram_pool' here, otherwise this will not
compile properly:
CC drivers/media/video/coda.o
drivers/media/video/coda.c: In function 'coda_probe':
drivers/media/video/coda.c:1893: error: implicit declaration of
function 'of_get_named_gen_pool'
drivers/media/video/coda.c:1893: warning: assignment makes pointer
from integer without a cast
drivers/media/video/coda.c:1894: error: 'iram_pool' undeclared (first
use in this function)
drivers/media/video/coda.c:1894: error: (Each undeclared identifier is
reported only once
drivers/media/video/coda.c:1894: error: for each function it appears in.)
> + dev_err(&pdev->dev, "iram pool not available\n");
> + return -ENOMEM;
> + }
> + dev->iram_vaddr = gen_pool_alloc(dev->iram_pool,
> CODA7_IRAM_SIZE);
> + if (!dev->iram_vaddr) {
> + dev_err(&pdev->dev, "unable to alloc iram\n");
> + return -ENOMEM;
> + }
> + dev->iram_paddr = gen_pool_virt_to_phys(iram_pool,
> + dev->iram_vaddr);
> + }
> +
> platform_set_drvdata(pdev, dev);
>
> return coda_firmware_request(dev);
> @@ -1869,6 +1920,8 @@ 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_vaddr)
> + gen_pool_free(dev->iram_pool, dev->iram_vaddr,
> 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/video/coda.h b/drivers/media/video/coda.h
> index 4cf4a04..fffeaf0 100644
> --- a/drivers/media/video/coda.h
> +++ b/drivers/media/video/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
> --
> 1.7.10.4
>
Regards.
[1] http://lxr.free-electrons.com/source/arch/arm/plat-mxc/iram_alloc.c#L58
--
Javier Martin
Vista Silicon S.L.
CDTUC - FASE C - Oficina S-345
Avda de los Castros s/n
39005- Santander. Cantabria. Spain
+34 942 25 32 60
www.vista-silicon.com
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