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[media] OMAP3: ISP: Add regulator control for omap34xx

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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>
This commit is contained in:
Kalle Jokiniemi 2011-05-03 07:41:22 -03:00 committed by Mauro Carvalho Chehab
parent 118314c016
commit 65d76488f6
2 changed files with 26 additions and 2 deletions
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27
drivers/media/video/omap3isp/ispccp2.c
View File

@ -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 @@ int omap3isp_ccp2_register_entities(struct isp_ccp2_device *ccp2,
*/
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)

1
drivers/media/video/omap3isp/ispccp2.h
View File

@ -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;