On Sunday, September 25, 2011 07:25:08 PM Jana Rapava wrote:
> Add callback to ehci_fixup to prepare
> for solving the problem with VBUS reset on Efika.
>
> Signed-off-by: Jana Rapava <ferma...@gmail.com>
> Cc: Marek Vasut <marek.va...@gmail.com>
> Cc: Remy Bohmer <li...@bohmer.net>
> Cc: Stefano Babic <sba...@denx.de>
> ---
> Changes for v2:
> - changed to proper patch
> Changes for v3:
> - merged other USB patches from u-boot-pxa/efikasb
> - offset-based access changed to struct-based access
> - use {clrset,clr,set}bits_le32() calls
> - CodingStyle and naming cleanup
> Changes for v4:
> - split into patchset
> - add callback ehci_fixup
>
> drivers/usb/host/ehci-hcd.c | 12 ++++++++++--
> 1 files changed, 10 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/usb/host/ehci-hcd.c b/drivers/usb/host/ehci-hcd.c
> index bdadd46..8d31921 100644
> --- a/drivers/usb/host/ehci-hcd.c
> +++ b/drivers/usb/host/ehci-hcd.c
> @@ -26,6 +26,7 @@
> #include <asm/io.h>
> #include <malloc.h>
> #include <watchdog.h>
> +#include <usb/ehci-fsl.h>
>
> #include <usb/ehci.h>
>
> @@ -536,6 +537,14 @@ static inline int min3(int a, int b, int c)
> return a;
> }
>
> +inline void __ehci_fixup(uint32_t *status_reg, uint32_t *reg_ref)
> +{
> + wait_ms(50);
> +}
> +
> +void ehci_fixup(uint32_t *status_reg, uint32_t *reg_ref)
> + __attribute__((weak, alias("__ehci_fixup")));
> +
> int
> ehci_submit_root(struct usb_device *dev, unsigned long pipe, void *buffer,
> int length, struct devrequest *req)
> @@ -709,8 +718,7 @@ ehci_submit_root(struct usb_device *dev, unsigned long
> pipe, void *buffer, * usb 2.0 specification say 50 ms resets on
> * root
> */
> - wait_ms(50);
> - /* terminate the reset */
> + ehci_fixup(status_reg, ®);
> ehci_writel(status_reg, reg & ~EHCI_PS_PR);
> /*
> * A host controller must terminate the reset
Dear Jana Rapava,
please document this properly and don't drop comments.
Cheers
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