diff options
author | Manjunath Hadli <manjunath.hadli@ti.com> | 2012-04-13 07:50:55 (GMT) |
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committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2012-07-30 22:08:20 (GMT) |
commit | 3d5946dcfd4d221126f3f190c5ca4ea41c20f138 (patch) | |
tree | 1e7451ef7b202754162210826f8aa30a40507ce7 /drivers/media/video/davinci/vpif_capture.c | |
parent | e9530dac31c0c0296242e9209c89f5a580a2d64b (diff) | |
download | linux-fsl-qoriq-3d5946dcfd4d221126f3f190c5ca4ea41c20f138.tar.xz |
[media] davinci: vpif capture:Add power management support
Implement power management operations - suspend and resume as part of
dev_pm_ops for VPIF capture driver.
Signed-off-by: Manjunath Hadli <manjunath.hadli@ti.com>
Signed-off-by: Lad, Prabhakar <prabhakar.lad@ti.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers/media/video/davinci/vpif_capture.c')
-rw-r--r-- | drivers/media/video/davinci/vpif_capture.c | 73 |
1 files changed, 61 insertions, 12 deletions
diff --git a/drivers/media/video/davinci/vpif_capture.c b/drivers/media/video/davinci/vpif_capture.c index 1d4427a..2727919 100644 --- a/drivers/media/video/davinci/vpif_capture.c +++ b/drivers/media/video/davinci/vpif_capture.c @@ -2312,26 +2312,70 @@ static int vpif_remove(struct platform_device *device) return 0; } +#ifdef CONFIG_PM /** * vpif_suspend: vpif device suspend - * - * TODO: Add suspend code here */ -static int -vpif_suspend(struct device *dev) +static int vpif_suspend(struct device *dev) { - return -1; + + struct common_obj *common; + struct channel_obj *ch; + int i; + + for (i = 0; i < VPIF_CAPTURE_MAX_DEVICES; i++) { + /* Get the pointer to the channel object */ + ch = vpif_obj.dev[i]; + common = &ch->common[VPIF_VIDEO_INDEX]; + mutex_lock(&common->lock); + if (ch->usrs && common->io_usrs) { + /* Disable channel */ + if (ch->channel_id == VPIF_CHANNEL0_VIDEO) { + enable_channel0(0); + channel0_intr_enable(0); + } + if (ch->channel_id == VPIF_CHANNEL1_VIDEO || + common->started == 2) { + enable_channel1(0); + channel1_intr_enable(0); + } + } + mutex_unlock(&common->lock); + } + + return 0; } -/** +/* * vpif_resume: vpif device suspend - * - * TODO: Add resume code here */ -static int -vpif_resume(struct device *dev) +static int vpif_resume(struct device *dev) { - return -1; + struct common_obj *common; + struct channel_obj *ch; + int i; + + for (i = 0; i < VPIF_CAPTURE_MAX_DEVICES; i++) { + /* Get the pointer to the channel object */ + ch = vpif_obj.dev[i]; + common = &ch->common[VPIF_VIDEO_INDEX]; + mutex_lock(&common->lock); + if (ch->usrs && common->io_usrs) { + /* Disable channel */ + if (ch->channel_id == VPIF_CHANNEL0_VIDEO) { + enable_channel0(1); + channel0_intr_enable(1); + } + if (ch->channel_id == VPIF_CHANNEL1_VIDEO || + common->started == 2) { + enable_channel1(1); + channel1_intr_enable(1); + } + } + mutex_unlock(&common->lock); + } + + return 0; } static const struct dev_pm_ops vpif_dev_pm_ops = { @@ -2339,11 +2383,16 @@ static const struct dev_pm_ops vpif_dev_pm_ops = { .resume = vpif_resume, }; +#define vpif_pm_ops (&vpif_dev_pm_ops) +#else +#define vpif_pm_ops NULL +#endif + static __refdata struct platform_driver vpif_driver = { .driver = { .name = "vpif_capture", .owner = THIS_MODULE, - .pm = &vpif_dev_pm_ops, + .pm = vpif_pm_ops, }, .probe = vpif_probe, .remove = vpif_remove, |