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authorJonathan Corbet <corbet@lwn.net>2007-03-25 11:36:28 -0300
committerMauro Carvalho Chehab <mchehab@infradead.org>2007-04-27 15:45:04 -0300
commitff68defa08376b6c0482b249b7dfd35241861bce (patch)
tree0ba01672c2c3900e61ddd8fd3a8d2c5736a31fa0 /drivers/media/video/cafe_ccic.c
parent5b50ed7ca2432e7ea3caf8cc2ef5ac805c082519 (diff)
V4L/DVB (5467): Add suspend/resume support to the Cafe CCIC
Add suspend/resume support to the Cafe CCIC driver. Signed-off-by: Jonathan Corbet <corbet@lwn.net> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
Diffstat (limited to 'drivers/media/video/cafe_ccic.c')
-rw-r--r--drivers/media/video/cafe_ccic.c45
1 files changed, 44 insertions, 1 deletions
diff --git a/drivers/media/video/cafe_ccic.c b/drivers/media/video/cafe_ccic.c
index bfae5d2fd744..4aa360b89ada 100644
--- a/drivers/media/video/cafe_ccic.c
+++ b/drivers/media/video/cafe_ccic.c
@@ -37,7 +37,7 @@
#include "cafe_ccic-regs.h"
-#define CAFE_VERSION 0x000001
+#define CAFE_VERSION 0x000002
/*
@@ -2188,6 +2188,45 @@ static void cafe_pci_remove(struct pci_dev *pdev)
}
+#ifdef CONFIG_PM
+/*
+ * Basic power management.
+ */
+static int cafe_pci_suspend(struct pci_dev *pdev, pm_message_t state)
+{
+ struct cafe_camera *cam = cafe_find_by_pdev(pdev);
+ int ret;
+
+ ret = pci_save_state(pdev);
+ if (ret)
+ return ret;
+ cafe_ctlr_stop_dma(cam);
+ cafe_ctlr_power_down(cam);
+ pci_disable_device(pdev);
+ return 0;
+}
+
+
+static int cafe_pci_resume(struct pci_dev *pdev)
+{
+ struct cafe_camera *cam = cafe_find_by_pdev(pdev);
+ int ret = 0;
+
+ ret = pci_restore_state(pdev);
+ if (ret)
+ return ret;
+ pci_enable_device(pdev);
+ cafe_ctlr_init(cam);
+ cafe_ctlr_power_up(cam);
+ set_bit(CF_CONFIG_NEEDED, &cam->flags);
+ if (cam->state == S_SPECREAD)
+ cam->state = S_IDLE; /* Don't bother restarting */
+ else if (cam->state == S_SINGLEREAD || cam->state == S_STREAMING)
+ ret = cafe_read_setup(cam, cam->state);
+ return ret;
+}
+
+#endif /* CONFIG_PM */
static struct pci_device_id cafe_ids[] = {
@@ -2203,6 +2242,10 @@ static struct pci_driver cafe_pci_driver = {
.id_table = cafe_ids,
.probe = cafe_pci_probe,
.remove = cafe_pci_remove,
+#ifdef CONFIG_PM
+ .suspend = cafe_pci_suspend,
+ .resume = cafe_pci_resume,
+#endif
};

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