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[media] tm6000: Add fast USB access quirk

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Some devices support fast access to registers using the USB interface
while others require a certain delay after each operation. This commit
adds a quirk that can be enabled by devices that don't need the delay.

Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Thierry Reding 2011-09-01 02:43:03 -03:00 committed by Mauro Carvalho Chehab
parent 0a54b86a71
commit 4284570836
2 changed files with 6 additions and 1 deletions
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3
drivers/staging/tm6000/tm6000-core.c
View File

@ -619,7 +619,8 @@ int tm6000_reset(struct tm6000_core *dev)
return err; return err;
} }
msleep(5); if ((dev->quirks & TM6000_QUIRK_NO_USB_DELAY) == 0)
msleep(5);
/* /*
* Not all devices have int_in defined * Not all devices have int_in defined

4
drivers/staging/tm6000/tm6000.h
View File

@ -169,6 +169,8 @@ struct tm6000_endpoint {
unsigned maxsize; unsigned maxsize;
}; };
#define TM6000_QUIRK_NO_USB_DELAY (1 << 0)
struct tm6000_core { struct tm6000_core {
/* generic device properties */ /* generic device properties */
char name[30]; /* name (including minor) of the device */ char name[30]; /* name (including minor) of the device */
@ -260,6 +262,8 @@ struct tm6000_core {
struct usb_isoc_ctl isoc_ctl; struct usb_isoc_ctl isoc_ctl;
spinlock_t slock; spinlock_t slock;
unsigned long quirks;
}; };
enum tm6000_ops_type { enum tm6000_ops_type {