RE: [PATCH v3 10/13] davinci: vpif capture:Add power management support
Hi Laurent, On Mon, Jun 25, 2012 at 18:27:23, Laurent Pinchart wrote: Hi Manjunath, Thank you for the patch. On Monday 25 June 2012 16:37:32 Manjunath Hadli wrote: Implement power management operations - suspend and resume as part of dev_pm_ops for VPIF capture driver. Signed-off-by: Manjunath Hadli manjunath.ha...@ti.com Signed-off-by: Lad, Prabhakar prabhakar@ti.com --- drivers/media/video/davinci/vpif_capture.c | 77 + 1 files changed, 65 insertions(+), 12 deletions(-) diff --git a/drivers/media/video/davinci/vpif_capture.c b/drivers/media/video/davinci/vpif_capture.c index 097e136..f1ee137 100644 --- a/drivers/media/video/davinci/vpif_capture.c +++ b/drivers/media/video/davinci/vpif_capture.c @@ -2300,26 +2300,74 @@ 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]; + if (mutex_lock_interruptible(common-lock)) + return -ERESTARTSYS; As for the display driver, this should probably be replaced by mutex_lock(). Ok, I'll replace it with mutex_lock(). Thx, --Manju + 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]; + if (mutex_lock_interruptible(common-lock)) + return -ERESTARTSYS; + + 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 = { @@ -2327,11 +2375,16 @@ 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, -- Regards, Laurent Pinchart -- To unsubscribe from this list: send the line unsubscribe linux-media in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Re: [PATCH v3 10/13] davinci: vpif capture:Add power management support
Hi Manjunath, Thank you for the patch. On Monday 25 June 2012 16:37:32 Manjunath Hadli wrote: Implement power management operations - suspend and resume as part of dev_pm_ops for VPIF capture driver. Signed-off-by: Manjunath Hadli manjunath.ha...@ti.com Signed-off-by: Lad, Prabhakar prabhakar@ti.com --- drivers/media/video/davinci/vpif_capture.c | 77 + 1 files changed, 65 insertions(+), 12 deletions(-) diff --git a/drivers/media/video/davinci/vpif_capture.c b/drivers/media/video/davinci/vpif_capture.c index 097e136..f1ee137 100644 --- a/drivers/media/video/davinci/vpif_capture.c +++ b/drivers/media/video/davinci/vpif_capture.c @@ -2300,26 +2300,74 @@ 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]; + if (mutex_lock_interruptible(common-lock)) + return -ERESTARTSYS; As for the display driver, this should probably be replaced by mutex_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]; + if (mutex_lock_interruptible(common-lock)) + return -ERESTARTSYS; + + 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 = { @@ -2327,11 +2375,16 @@ 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, -- Regards, Laurent Pinchart -- To unsubscribe from this list: send the line unsubscribe linux-media in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html