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| author | Kalle Jokiniemi <kalle.jokiniemi@nokia.com> | 2011-05-03 07:41:22 -0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2011-07-27 17:56:06 -0300 |
| commit | 65d76488f65011a68202eae7c01062390474bb1f (patch) | |
| tree | 4d5ed0fe4f5a39b2d7b0be3281db5b63845710ca /drivers/media | |
| parent | 118314c0169f25b1456232def5ca48d15e5036f0 (diff) | |
| download | linux-3.10-65d76488f65011a68202eae7c01062390474bb1f.tar.gz linux-3.10-65d76488f65011a68202eae7c01062390474bb1f.tar.bz2 linux-3.10-65d76488f65011a68202eae7c01062390474bb1f.zip | |
[media] OMAP3: ISP: Add regulator control for omap34xx
The current omap3isp driver is missing regulator handling
for CSIb complex in omap34xx based devices. This patch
adds a mechanism for this to the omap3isp driver.
Signed-off-by: Kalle Jokiniemi <kalle.jokiniemi@nokia.com>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: Sakari Ailus <sakari.ailus@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers/media')
| -rw-r--r-- | drivers/media/video/omap3isp/ispccp2.c | 27 | ||||
| -rw-r--r-- | drivers/media/video/omap3isp/ispccp2.h | 1 |
2 files changed, 26 insertions, 2 deletions
diff --git a/drivers/media/video/omap3isp/ispccp2.c b/drivers/media/video/omap3isp/ispccp2.c index 0e16cab8e08..ec9e395f333 100644 --- a/drivers/media/video/omap3isp/ispccp2.c +++ b/drivers/media/video/omap3isp/ispccp2.c @@ -30,6 +30,7 @@ #include <linux/module.h> #include <linux/mutex.h> #include <linux/uaccess.h> +#include <linux/regulator/consumer.h> #include "isp.h" #include "ispreg.h" @@ -163,6 +164,9 @@ static void ccp2_if_enable(struct isp_ccp2_device *ccp2, u8 enable) struct isp_pipeline *pipe = to_isp_pipeline(&ccp2->subdev.entity); int i; + if (enable && ccp2->vdds_csib) + regulator_enable(ccp2->vdds_csib); + /* Enable/Disable all the LCx channels */ for (i = 0; i < CCP2_LCx_CHANS_NUM; i++) isp_reg_clr_set(isp, OMAP3_ISP_IOMEM_CCP2, ISPCCP2_LCx_CTRL(i), @@ -186,6 +190,9 @@ static void ccp2_if_enable(struct isp_ccp2_device *ccp2, u8 enable) ISPCCP2_LC01_IRQENABLE, ISPCCP2_LC01_IRQSTATUS_LC0_FS_IRQ); } + + if (!enable && ccp2->vdds_csib) + regulator_disable(ccp2->vdds_csib); } /* @@ -1137,6 +1144,9 @@ error: */ void omap3isp_ccp2_cleanup(struct isp_device *isp) { + struct isp_ccp2_device *ccp2 = &isp->isp_ccp2; + + regulator_put(ccp2->vdds_csib); } /* @@ -1151,14 +1161,27 @@ int omap3isp_ccp2_init(struct isp_device *isp) init_waitqueue_head(&ccp2->wait); - /* On the OMAP36xx, the CCP2 uses the CSI PHY1 or PHY2, shared with + /* + * On the OMAP34xx the CSI1 receiver is operated in the CSIb IO + * complex, which is powered by vdds_csib power rail. Hence the + * request for the regulator. + * + * On the OMAP36xx, the CCP2 uses the CSI PHY1 or PHY2, shared with * the CSI2c or CSI2a receivers. The PHY then needs to be explicitly * configured. * * TODO: Don't hardcode the usage of PHY1 (shared with CSI2c). */ - if (isp->revision == ISP_REVISION_15_0) + if (isp->revision == ISP_REVISION_2_0) { + ccp2->vdds_csib = regulator_get(isp->dev, "vdds_csib"); + if (IS_ERR(ccp2->vdds_csib)) { + dev_dbg(isp->dev, + "Could not get regulator vdds_csib\n"); + ccp2->vdds_csib = NULL; + } + } else if (isp->revision == ISP_REVISION_15_0) { ccp2->phy = &isp->isp_csiphy1; + } ret = ccp2_init_entities(ccp2); if (ret < 0) diff --git a/drivers/media/video/omap3isp/ispccp2.h b/drivers/media/video/omap3isp/ispccp2.h index 5505a86a9a7..6674e9de2cd 100644 --- a/drivers/media/video/omap3isp/ispccp2.h +++ b/drivers/media/video/omap3isp/ispccp2.h @@ -81,6 +81,7 @@ struct isp_ccp2_device { struct isp_interface_mem_config mem_cfg; struct isp_video video_in; struct isp_csiphy *phy; + struct regulator *vdds_csib; unsigned int error; enum isp_pipeline_stream_state state; wait_queue_head_t wait; |