From d6505ab9cd5672f99adeba86696499c2651a6e73 Mon Sep 17 00:00:00 2001 From: Ville Syrjala Date: Thu, 3 Jul 2008 10:45:37 -0400 Subject: Input: ati_remote2 - add autosuspend support Signed-off-by: Ville Syrjala Signed-off-by: Dmitry Torokhov --- drivers/input/misc/ati_remote2.c | 133 +++++++++++++++++++++++++++++++++++++-- 1 file changed, 127 insertions(+), 6 deletions(-) (limited to 'drivers/input') diff --git a/drivers/input/misc/ati_remote2.c b/drivers/input/misc/ati_remote2.c index f4918b9bb94..3c9988dc0e9 100644 --- a/drivers/input/misc/ati_remote2.c +++ b/drivers/input/misc/ati_remote2.c @@ -45,6 +45,13 @@ static struct usb_device_id ati_remote2_id_table[] = { }; MODULE_DEVICE_TABLE(usb, ati_remote2_id_table); +static DEFINE_MUTEX(ati_remote2_mutex); + +enum { + ATI_REMOTE2_OPENED = 0x1, + ATI_REMOTE2_SUSPENDED = 0x2, +}; + enum { ATI_REMOTE2_AUX1, ATI_REMOTE2_AUX2, @@ -124,46 +131,103 @@ struct ati_remote2 { /* Each mode (AUX1-AUX4 and PC) can have an independent keymap. */ u16 keycode[ATI_REMOTE2_MODES][ARRAY_SIZE(ati_remote2_key_table)]; + + unsigned int flags; }; static int ati_remote2_probe(struct usb_interface *interface, const struct usb_device_id *id); static void ati_remote2_disconnect(struct usb_interface *interface); +static int ati_remote2_suspend(struct usb_interface *interface, pm_message_t message); +static int ati_remote2_resume(struct usb_interface *interface); static struct usb_driver ati_remote2_driver = { .name = "ati_remote2", .probe = ati_remote2_probe, .disconnect = ati_remote2_disconnect, .id_table = ati_remote2_id_table, + .suspend = ati_remote2_suspend, + .resume = ati_remote2_resume, + .supports_autosuspend = 1, }; -static int ati_remote2_open(struct input_dev *idev) +static int ati_remote2_submit_urbs(struct ati_remote2 *ar2) { - struct ati_remote2 *ar2 = input_get_drvdata(idev); int r; r = usb_submit_urb(ar2->urb[0], GFP_KERNEL); if (r) { dev_err(&ar2->intf[0]->dev, - "%s: usb_submit_urb() = %d\n", __func__, r); + "%s(): usb_submit_urb() = %d\n", __func__, r); return r; } r = usb_submit_urb(ar2->urb[1], GFP_KERNEL); if (r) { usb_kill_urb(ar2->urb[0]); dev_err(&ar2->intf[1]->dev, - "%s: usb_submit_urb() = %d\n", __func__, r); + "%s(): usb_submit_urb() = %d\n", __func__, r); return r; } return 0; } +static void ati_remote2_kill_urbs(struct ati_remote2 *ar2) +{ + usb_kill_urb(ar2->urb[1]); + usb_kill_urb(ar2->urb[0]); +} + +static int ati_remote2_open(struct input_dev *idev) +{ + struct ati_remote2 *ar2 = input_get_drvdata(idev); + int r; + + dev_dbg(&ar2->intf[0]->dev, "%s()\n", __func__); + + r = usb_autopm_get_interface(ar2->intf[0]); + if (r) { + dev_err(&ar2->intf[0]->dev, + "%s(): usb_autopm_get_interface() = %d\n", __func__, r); + goto fail1; + } + + mutex_lock(&ati_remote2_mutex); + + if (!(ar2->flags & ATI_REMOTE2_SUSPENDED)) { + r = ati_remote2_submit_urbs(ar2); + if (r) + goto fail2; + } + + ar2->flags |= ATI_REMOTE2_OPENED; + + mutex_unlock(&ati_remote2_mutex); + + usb_autopm_put_interface(ar2->intf[0]); + + return 0; + + fail2: + mutex_unlock(&ati_remote2_mutex); + usb_autopm_put_interface(ar2->intf[0]); + fail1: + return r; +} + static void ati_remote2_close(struct input_dev *idev) { struct ati_remote2 *ar2 = input_get_drvdata(idev); - usb_kill_urb(ar2->urb[0]); - usb_kill_urb(ar2->urb[1]); + dev_dbg(&ar2->intf[0]->dev, "%s()\n", __func__); + + mutex_lock(&ati_remote2_mutex); + + if (!(ar2->flags & ATI_REMOTE2_SUSPENDED)) + ati_remote2_kill_urbs(ar2); + + ar2->flags &= ~ATI_REMOTE2_OPENED; + + mutex_unlock(&ati_remote2_mutex); } static void ati_remote2_input_mouse(struct ati_remote2 *ar2) @@ -288,6 +352,7 @@ static void ati_remote2_complete_mouse(struct urb *urb) switch (urb->status) { case 0: + usb_mark_last_busy(ar2->udev); ati_remote2_input_mouse(ar2); break; case -ENOENT: @@ -298,6 +363,7 @@ static void ati_remote2_complete_mouse(struct urb *urb) "%s(): urb status = %d\n", __func__, urb->status); return; default: + usb_mark_last_busy(ar2->udev); dev_err(&ar2->intf[0]->dev, "%s(): urb status = %d\n", __func__, urb->status); } @@ -315,6 +381,7 @@ static void ati_remote2_complete_key(struct urb *urb) switch (urb->status) { case 0: + usb_mark_last_busy(ar2->udev); ati_remote2_input_key(ar2); break; case -ENOENT: @@ -325,6 +392,7 @@ static void ati_remote2_complete_key(struct urb *urb) "%s(): urb status = %d\n", __func__, urb->status); return; default: + usb_mark_last_busy(ar2->udev); dev_err(&ar2->intf[1]->dev, "%s(): urb status = %d\n", __func__, urb->status); } @@ -562,6 +630,8 @@ static int ati_remote2_probe(struct usb_interface *interface, const struct usb_d usb_set_intfdata(interface, ar2); + interface->needs_remote_wakeup = 1; + return 0; fail2: @@ -594,6 +664,57 @@ static void ati_remote2_disconnect(struct usb_interface *interface) kfree(ar2); } +static int ati_remote2_suspend(struct usb_interface *interface, + pm_message_t message) +{ + struct ati_remote2 *ar2; + struct usb_host_interface *alt = interface->cur_altsetting; + + if (alt->desc.bInterfaceNumber) + return 0; + + ar2 = usb_get_intfdata(interface); + + dev_dbg(&ar2->intf[0]->dev, "%s()\n", __func__); + + mutex_lock(&ati_remote2_mutex); + + if (ar2->flags & ATI_REMOTE2_OPENED) + ati_remote2_kill_urbs(ar2); + + ar2->flags |= ATI_REMOTE2_SUSPENDED; + + mutex_unlock(&ati_remote2_mutex); + + return 0; +} + +static int ati_remote2_resume(struct usb_interface *interface) +{ + struct ati_remote2 *ar2; + struct usb_host_interface *alt = interface->cur_altsetting; + int r = 0; + + if (alt->desc.bInterfaceNumber) + return 0; + + ar2 = usb_get_intfdata(interface); + + dev_dbg(&ar2->intf[0]->dev, "%s()\n", __func__); + + mutex_lock(&ati_remote2_mutex); + + if (ar2->flags & ATI_REMOTE2_OPENED) + r = ati_remote2_submit_urbs(ar2); + + if (!r) + ar2->flags &= ~ATI_REMOTE2_SUSPENDED; + + mutex_unlock(&ati_remote2_mutex); + + return r; +} + static int __init ati_remote2_init(void) { int r; -- cgit v1.2.3