On Sun, 20 Feb 2011, Antonio Ospite wrote:
> The Sixaxis does not want the report_id as part of the data packet in
> Output reports, so we have to discard buf[0] when sending the actual
> control message.
>
> Add also some documentation about that and about why
> hdev->hid_output_raw_report needs to be overridden.
>
> Signed-off-by: Antonio Ospite <ospite@xxxxxxxxxxxxxxxxx>
Applied, thanks Antonio.
> ---
> drivers/hid/hid-sony.c | 20 ++++++++++++++++++++
> 1 files changed, 20 insertions(+), 0 deletions(-)
>
> diff --git a/drivers/hid/hid-sony.c b/drivers/hid/hid-sony.c
> index 68d7b36..93819a0 100644
> --- a/drivers/hid/hid-sony.c
> +++ b/drivers/hid/hid-sony.c
> @@ -46,6 +46,16 @@ static __u8 *sony_report_fixup(struct hid_device *hdev, __u8 *rdesc,
> return rdesc;
> }
>
> +/*
> + * The Sony Sixaxis does not handle HID Output Reports on the Interrupt EP
> + * like it should according to usbhid/hid-core.c::usbhid_output_raw_report()
> + * so we need to override that forcing HID Output Reports on the Control EP.
> + *
> + * There is also another issue about HID Output Reports via USB, the Sixaxis
> + * does not want the report_id as part of the data packet, so we have to
> + * discard buf[0] when sending the actual control message, even for numbered
> + * reports, humpf!
> + */
> static int sixaxis_usb_output_raw_report(struct hid_device *hid, __u8 *buf,
> size_t count, unsigned char report_type)
> {
> @@ -55,6 +65,12 @@ static int sixaxis_usb_output_raw_report(struct hid_device *hid, __u8 *buf,
> int report_id = buf[0];
> int ret;
>
> + if (report_type == HID_OUTPUT_REPORT) {
> + /* Don't send the Report ID */
> + buf++;
> + count--;
> + }
> +
> ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
> HID_REQ_SET_REPORT,
> USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_INTERFACE,
> @@ -62,6 +78,10 @@ static int sixaxis_usb_output_raw_report(struct hid_device *hid, __u8 *buf,
> interface->desc.bInterfaceNumber, buf, count,
> USB_CTRL_SET_TIMEOUT);
>
> + /* Count also the Report ID, in case of an Output report. */
> + if (ret > 0 && report_type == HID_OUTPUT_REPORT)
> + ret++;
> +
> return ret;
> }
>
> --
> 1.7.4.1
>
--
Jiri Kosina
SUSE Labs, Novell Inc.
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