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| author | Philipp Zabel <p.zabel@pengutronix.de> | 2013-09-30 10:34:44 -0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <m.chehab@samsung.com> | 2013-10-28 15:23:10 -0200 |
| commit | 0cddc7e9a0dd4b77471889d436b4a4ed8d8385bb (patch) | |
| tree | 4d1c3bf0812452236be94b52356df990858e4801 /drivers/media/platform | |
| parent | 2ad5389b341282636644d917685029b4bb50553c (diff) | |
| download | op-kernel-dev-0cddc7e9a0dd4b77471889d436b4a4ed8d8385bb.zip op-kernel-dev-0cddc7e9a0dd4b77471889d436b4a4ed8d8385bb.tar.gz | |
[media] coda: allow more than four instances on CODA7541
With the new firmware, there are not anymore four register sets,
but a single register set, which the driver has to conserve across
context switches. This allows to handle more than four instances
at the same time.
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Kamil Debski <k.debski@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
Diffstat (limited to 'drivers/media/platform')
| -rw-r--r-- | drivers/media/platform/coda.c | 14 |
1 files changed, 10 insertions, 4 deletions
diff --git a/drivers/media/platform/coda.c b/drivers/media/platform/coda.c index 449d2fe..2805538 100644 --- a/drivers/media/platform/coda.c +++ b/drivers/media/platform/coda.c @@ -39,7 +39,7 @@ #define CODA_NAME "coda" -#define CODA_MAX_INSTANCES 4 +#define CODADX6_MAX_INSTANCES 4 #define CODA_FMO_BUF_SIZE 32 #define CODADX6_WORK_BUF_SIZE (288 * 1024 + CODA_FMO_BUF_SIZE * 8 * 1024) @@ -2371,7 +2371,13 @@ static int coda_queue_init(void *priv, struct vb2_queue *src_vq, static int coda_next_free_instance(struct coda_dev *dev) { - return ffz(dev->instance_mask); + int idx = ffz(dev->instance_mask); + + if ((idx < 0) || + (dev->devtype->product == CODA_DX6 && idx > CODADX6_MAX_INSTANCES)) + return -EBUSY; + + return idx; } static int coda_open(struct file *file) @@ -2386,8 +2392,8 @@ static int coda_open(struct file *file) return -ENOMEM; idx = coda_next_free_instance(dev); - if (idx >= CODA_MAX_INSTANCES) { - ret = -EBUSY; + if (idx < 0) { + ret = idx; goto err_coda_max; } set_bit(idx, &dev->instance_mask); |
