Hi,
> From: Peter Chen
> Sent: Tuesday, November 08, 2016 6:25 PM
>
> On Wed, Nov 02, 2016 at 03:47:12PM +0900, Yoshihiro Shimoda wrote:
< snip >
> > + /* If current and new mode is the same, this returns the error */
> > + if (is_host == new_mode_is_host)
> > + return -EINVAL;
> > +
> > + if (new_mode_is_host) {
> > + if (!is_b_device && !is_host) /* A-Peripheral */
> > + rcar_gen3_init_from_a_peri_to_a_host(ch);
> > + if (is_b_device && !is_host) /* B-Peripheral */
> > + rcar_gen3_init_for_b_host(ch);
>
> is_host must be false here
Thank you for the review!
I will clean up the code and submit v4 patch soon.
> > + } else {
> > + if (!is_b_device && is_host) /* A-Host */
> > + rcar_gen3_init_for_a_peri(ch);
> > + if (is_b_device && is_host) /* B-Host */
> > + rcar_gen3_init_for_peri(ch);
>
> is_host must be true here
Same the above.
> > + }
> > +
> > + return count;
> > +}
> > +
>
> How can you handle the case which ID pin is incorrect, eg, ID is 0, but
> it is peripheral mode at the initialization?
This driver always checks the ID pin and sets the suitable mode in initialization timing.
So, we can ignore such a situation.
< In detail >
phy_init() @ drivers/phy/phy-core.c
--> rcar_gen3_phy_usb2_init()
--> rcar_gen3_phy_init_otg()
--> rcar_gen3_device_recognition()
--> if (!rcar_gen3_check_id(ch))
rcar_gen3_init_for_host(ch); <-- Sets the mode as host
else
rcar_gen3_init_for_peri(ch); <-- Sets the mode as peripheral
++phy->init_count; @ drivers/phy/phy-core.c
Best regards,
Yoshihiro Shimoda
> --
>
> Best Regards,
> Peter Chen
