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authorPhilipp Zabel <p.zabel@pengutronix.de>2013-04-29 16:17:14 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2013-04-29 18:28:13 -0700
commit657eee7d25fb1422422ca32d5619185ae56a245d (patch)
tree0591c85ff0b4757c0392396b3b1b0029241f8957 /drivers/media
parent4984c6f5e56c3e68922fd979347ba7aff385783b (diff)
media: coda: use genalloc API
This patch depends on "genalloc: add devres support, allow to find a managed pool by device", which provides the of_get_named_gen_pool and dev_get_gen_pool functions. Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de> Acked-by: Javier Martin <javier.martin@vista-silicon.com> Acked-by: Grant Likely <grant.likely@secretlab.ca> Cc: Michal Simek <monstr@monstr.eu> Cc: Dong Aisheng <dong.aisheng@linaro.org> Cc: Fabio Estevam <fabio.estevam@freescale.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Huang Shijie <shijie8@gmail.com> Cc: Matt Porter <mporter@ti.com> Cc: Paul Gortmaker <paul.gortmaker@windriver.com> Cc: Rob Herring <rob.herring@calxeda.com> Cc: Shawn Guo <shawn.guo@linaro.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/media')
-rw-r--r--drivers/media/platform/Kconfig1
-rw-r--r--drivers/media/platform/coda.c45
2 files changed, 31 insertions, 15 deletions
diff --git a/drivers/media/platform/Kconfig b/drivers/media/platform/Kconfig
index a0639e779973..26500094de7c 100644
--- a/drivers/media/platform/Kconfig
+++ b/drivers/media/platform/Kconfig
@@ -145,7 +145,6 @@ config VIDEO_CODA
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 20827ba168fc..b931c2a5c7fc 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>
@@ -23,7 +24,7 @@
#include <linux/slab.h>
#include <linux/videodev2.h>
#include <linux/of.h>
-#include <linux/platform_data/imx-iram.h>
+#include <linux/platform_data/coda.h>
#include <media/v4l2-ctrls.h>
#include <media/v4l2-device.h>
@@ -43,6 +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 CODADX6_IRAM_SIZE 0xb000
#define CODA7_IRAM_SIZE 0x14000 /* 81920 bytes */
#define CODA_MAX_FRAMEBUFFERS 2
@@ -128,7 +130,10 @@ 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;
@@ -1926,6 +1931,9 @@ static int coda_probe(struct platform_device *pdev)
const struct of_device_id *of_id =
of_match_device(of_match_ptr(coda_dt_ids), &pdev->dev);
const struct platform_device_id *pdev_id;
+ struct coda_platform_data *pdata = pdev->dev.platform_data;
+ struct device_node *np = pdev->dev.of_node;
+ struct gen_pool *pool;
struct coda_dev *dev;
struct resource *res;
int ret, irq;
@@ -1988,6 +1996,16 @@ static int coda_probe(struct platform_device *pdev)
return -ENOENT;
}
+ /* Get IRAM pool from device tree or platform data */
+ pool = of_get_named_gen_pool(np, "iram", 0);
+ if (!pool && pdata)
+ pool = dev_get_gen_pool(pdata->iram_dev);
+ if (!pool) {
+ dev_err(&pdev->dev, "iram pool not available\n");
+ return -ENOMEM;
+ }
+ dev->iram_pool = pool;
+
ret = v4l2_device_register(&pdev->dev, &dev->v4l2_dev);
if (ret)
return ret;
@@ -2022,18 +2040,17 @@ static int 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);
@@ -2050,8 +2067,8 @@ 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);