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| author | Joachim Foerster <joachim.foerster@missinglinkelectronics.com> | 2011-10-19 16:18:41 +0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2011-10-20 00:29:06 +0400 |
| commit | 3a7655fcb210b349111251689d0a56b7250885ea (patch) | |
| tree | b909f3f73d89d1af8807036a3922a19aca41b514 /drivers/usb/host/isp1760-hcd.h | |
| parent | 0f8fd43c42f2cc249943be76a4db0d058c16b6dc (diff) | |
| download | linux-3a7655fcb210b349111251689d0a56b7250885ea.tar.xz | |
usb/isp1760: Allow to optionally trigger low-level chip reset via GPIOLIB.
Properly triggering the reset wire is necessary with the ISP1761 used
on Terasic DE4 Altera-FPGA boards using a NIOS2 processor, for example.
This is an optional implementation for the OF binding only. The other
bindings just pass an invalid GPIO to the isp1760_register() routine.
Example, usage in DTS:
gpios = <&pio_isp1761rst_0 0 1>;
to point to a GPIO controller from within the ISP1761 node: GPIO 0, active low.
Signed-off-by: Joachim Foerster <joachim.foerster@missinglinkelectronics.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/usb/host/isp1760-hcd.h')
| -rw-r--r-- | drivers/usb/host/isp1760-hcd.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/usb/host/isp1760-hcd.h b/drivers/usb/host/isp1760-hcd.h index fda0f2d54e3d..33dc79ccaa6b 100644 --- a/drivers/usb/host/isp1760-hcd.h +++ b/drivers/usb/host/isp1760-hcd.h @@ -4,6 +4,7 @@ /* exports for if */ struct usb_hcd *isp1760_register(phys_addr_t res_start, resource_size_t res_len, int irq, unsigned long irqflags, + int rst_gpio, struct device *dev, const char *busname, unsigned int devflags); int init_kmem_once(void); @@ -126,6 +127,7 @@ typedef void (packet_enqueue)(struct usb_hcd *hcd, struct isp1760_qh *qh, #define ISP1760_FLAG_ISP1761 0x00000040 /* Chip is ISP1761 */ #define ISP1760_FLAG_INTR_POL_HIGH 0x00000080 /* Interrupt polarity active high */ #define ISP1760_FLAG_INTR_EDGE_TRIG 0x00000100 /* Interrupt edge triggered */ +#define ISP1760_FLAG_RESET_ACTIVE_HIGH 0x80000000 /* RESET GPIO active high */ /* chip memory management */ struct memory_chunk { |