Messages in this thread Patch in this message | | | From | Philipp Zabel <> | Subject | [PATCH v6 3/4] media: coda: use genalloc API | Date | Fri, 16 Nov 2012 11:30:16 +0100 |
| |
This patch depends on "genalloc: add a global pool list, allow to find pools by phys address", which provides the of_get_named_gen_pool function.
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de> --- drivers/media/platform/Kconfig | 3 +-- drivers/media/platform/coda.c | 47 ++++++++++++++++++++++++++++------------ 2 files changed, 34 insertions(+), 16 deletions(-)
diff --git a/drivers/media/platform/Kconfig b/drivers/media/platform/Kconfig index 181c768..09d45c6 100644 --- a/drivers/media/platform/Kconfig +++ b/drivers/media/platform/Kconfig @@ -130,10 +130,9 @@ if V4L_MEM2MEM_DRIVERS config VIDEO_CODA tristate "Chips&Media Coda multi-standard codec IP" - depends on VIDEO_DEV && VIDEO_V4L2 && ARCH_MXC + depends on VIDEO_DEV && VIDEO_V4L2 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 cd04ae2..f17b659 100644 --- a/drivers/media/platform/coda.c +++ b/drivers/media/platform/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> @@ -24,7 +25,6 @@ #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> @@ -43,6 +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 CODADX6_IRAM_SIZE 0xb000 #define CODA7_IRAM_SIZE 0x14000 /* 81920 bytes */ #define CODA_MAX_FRAMEBUFFERS 2 @@ -128,7 +129,10 @@ 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; + unsigned long iram_size; spinlock_t irqlock; struct mutex dev_mutex; @@ -1958,6 +1962,22 @@ static int __devinit coda_probe(struct platform_device *pdev) return -ENOENT; } + /* Without device tree, get SRAM paddr from second memory resource */ + res = platform_get_resource(pdev, IORESOURCE_MEM, 1); + if (res != NULL) + dev->iram_pool = gen_pool_find_by_phys(res->start); +#ifdef CONFIG_OF + if (!dev->iram_pool) { + struct device_node *np = pdev->dev.of_node; + + dev->iram_pool = of_get_named_gen_pool(np, "iram", 0); + } +#endif + if (!dev->iram_pool) { + dev_err(&pdev->dev, "iram pool not available\n"); + return -ENOMEM; + } + ret = v4l2_device_register(&pdev->dev, &dev->v4l2_dev); if (ret) return ret; @@ -1992,18 +2012,17 @@ 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; - } + if (dev->devtype->product == CODA_DX6) + dev->iram_size = CODADX6_IRAM_SIZE; + else + dev->iram_size = CODA7_IRAM_SIZE; + dev->iram_vaddr = gen_pool_alloc(dev->iram_pool, dev->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(dev->iram_pool, + dev->iram_vaddr); platform_set_drvdata(pdev, dev); @@ -2020,8 +2039,8 @@ 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->iram_vaddr) + gen_pool_free(dev->iram_pool, dev->iram_vaddr, dev->iram_size); if (dev->codebuf.vaddr) dma_free_coherent(&pdev->dev, dev->codebuf.size, &dev->codebuf.vaddr, dev->codebuf.paddr); -- 1.7.10.4
| |