On Wed, Mar 09, 2011 at 11:33:52PM -0500, Rafi Rubin wrote:
> Adding a wait before the wakeup signal.
>
> As a precautionary measure sanity check the current sensor mode. If
> needed reset it to "dual".
>
> Signed-off-by: Rafi Rubin <rafi@xxxxxxxxxxxxxx>
>
> When the device is responding poorly and needs the wakeup call, it was
> missing it. Giving it a chance to settle first improves the chances
> that signal gets through.
>
> I was also seeing the device come up in strange modes where it did not
> respond to physical stimulus. Hopefully the quirk will fix that, but
> even so it seems like a good idea to check. It also makes me curious
> what the "off" code is.
> ---
> drivers/hid/hid-ntrig.c | 45 +++++++++++++++++++++++++++++++++++++++++++--
> 1 files changed, 43 insertions(+), 2 deletions(-)
no negative effects
Tested-by: Peter Hutterer <peter.hutterer@xxxxxxxxx>
Cheers,
Peter
>
> diff --git a/drivers/hid/hid-ntrig.c b/drivers/hid/hid-ntrig.c
> index 850ba14..fa862c5 100644
> --- a/drivers/hid/hid-ntrig.c
> +++ b/drivers/hid/hid-ntrig.c
> @@ -110,6 +110,36 @@ static int ntrig_version_string(unsigned char *raw, char *buf)
> return sprintf(buf, "%u.%u.%u.%u.%u", a, b, c, d, e);
> }
>
> +static inline int ntrig_get_mode(struct hid_device *hdev)
> +{
> + struct hid_report *report = hdev->report_enum[HID_FEATURE_REPORT].
> + report_id_hash[0x0d];
> +
> + if (!report)
> + return -EINVAL;
> +
> + usbhid_submit_report(hdev, report, USB_DIR_IN);
> + usbhid_wait_io(hdev);
> + return (int)report->field[0]->value[0];
> +}
> +
> +static inline void ntrig_set_mode(struct hid_device *hdev, const int mode)
> +{
> + struct hid_report *report;
> + __u8 mode_commands[4] = { 0xe, 0xf, 0x1b, 0x10 };
> +
> + if (mode < 0 || mode > 3)
> + return;
> +
> + report = hdev->report_enum[HID_FEATURE_REPORT].
> + report_id_hash[mode_commands[mode]];
> +
> + if (!report)
> + return;
> +
> + usbhid_submit_report(hdev, report, USB_DIR_IN);
> +}
> +
> static void ntrig_report_version(struct hid_device *hdev)
> {
> int ret;
> @@ -905,8 +935,19 @@ static int ntrig_probe(struct hid_device *hdev, const struct hid_device_id *id)
>
> /* This is needed for devices with more recent firmware versions */
> report = hdev->report_enum[HID_FEATURE_REPORT].report_id_hash[0x0a];
> - if (report)
> - usbhid_submit_report(hdev, report, USB_DIR_OUT);
> + if (report) {
> + /* Let the device settle to ensure the wakeup message gets
> + * through */
> + usbhid_wait_io(hdev);
> + usbhid_submit_report(hdev, report, USB_DIR_IN);
> +
> + /*
> + * Sanity check: if the current mode is invalid reset it to
> + * something reasonable.
> + */
> + if (ntrig_get_mode(hdev) >= 4)
> + ntrig_set_mode(hdev, 3);
> + }
>
> ntrig_report_version(hdev);
>
> --
> 1.7.4.1
>
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