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authorMike Isely <isely@pobox.com>2006-09-23 22:26:52 -0300
committerMauro Carvalho Chehab <mchehab@infradead.org>2006-10-03 15:13:34 -0300
commit32ffa9ae03c529df4208b63b4b17c6d84141faa3 (patch)
tree55be825b8bb7d1dafdc2fe936d1e5df47d1a1fbe
parent59753950a67edf386413c7b18039b89de56b40fb (diff)
V4L/DVB (4662): Pvrusb2: Implement VIDIOC_INT_[G|S]_REGISTER
Implement VIDIOC_INT_SET_REGISTER and VIDIOC_INT_GET_REGISTER for the pvrusb2 driver. This is a debugging aid which will not be enabled unless CONFIG_VIDEO_ADV_DEBUG has been enabled. Signed-off-by: Mike Isely <isely@pobox.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
-rw-r--r--drivers/media/video/pvrusb2/pvrusb2-hdw.c32
-rw-r--r--drivers/media/video/pvrusb2/pvrusb2-hdw.h8
-rw-r--r--drivers/media/video/pvrusb2/pvrusb2-v4l2.c14
3 files changed, 54 insertions, 0 deletions
diff --git a/drivers/media/video/pvrusb2/pvrusb2-hdw.c b/drivers/media/video/pvrusb2/pvrusb2-hdw.c
index 88604365777..11a327d167b 100644
--- a/drivers/media/video/pvrusb2/pvrusb2-hdw.c
+++ b/drivers/media/video/pvrusb2/pvrusb2-hdw.c
@@ -24,6 +24,7 @@
#include <linux/slab.h>
#include <linux/firmware.h>
#include <linux/videodev2.h>
+#include <media/v4l2-common.h>
#include <asm/semaphore.h>
#include "pvrusb2.h"
#include "pvrusb2-std.h"
@@ -3131,6 +3132,37 @@ static int pvr2_hdw_get_eeprom_addr(struct pvr2_hdw *hdw)
}
+int pvr2_hdw_register_access(struct pvr2_hdw *hdw,
+ u32 chip_id,unsigned long reg_id,
+ int setFl,u32 *val_ptr)
+{
+#ifdef CONFIG_VIDEO_ADV_DEBUG
+ struct list_head *item;
+ struct pvr2_i2c_client *cp;
+ struct v4l2_register req;
+ int stat;
+
+ req.i2c_id = chip_id;
+ req.reg = reg_id;
+ if (setFl) req.val = *val_ptr;
+ mutex_lock(&hdw->i2c_list_lock); do {
+ list_for_each(item,&hdw->i2c_clients) {
+ cp = list_entry(item,struct pvr2_i2c_client,list);
+ if (cp->client->driver->id != chip_id) continue;
+ stat = pvr2_i2c_client_cmd(
+ cp,(setFl ? VIDIOC_INT_S_REGISTER :
+ VIDIOC_INT_G_REGISTER),&req);
+ if (!setFl) *val_ptr = req.val;
+ return stat;
+ }
+ } while (0); mutex_unlock(&hdw->i2c_list_lock);
+ return -EINVAL;
+#else
+ return -ENOSYS;
+#endif
+}
+
+
/*
Stuff for Emacs to see, in order to encourage consistent editing style:
*** Local Variables: ***
diff --git a/drivers/media/video/pvrusb2/pvrusb2-hdw.h b/drivers/media/video/pvrusb2/pvrusb2-hdw.h
index fd931b5da49..29979bb2a76 100644
--- a/drivers/media/video/pvrusb2/pvrusb2-hdw.h
+++ b/drivers/media/video/pvrusb2/pvrusb2-hdw.h
@@ -211,6 +211,14 @@ int pvr2_hdw_v4l_get_minor_number(struct pvr2_hdw *);
/* Store the v4l minor device number */
void pvr2_hdw_v4l_store_minor_number(struct pvr2_hdw *,int);
+/* Direct read/write access to chip's registers:
+ chip_id - unique id of chip (e.g. I2C_DRIVERD_xxxx)
+ reg_id - register number to access
+ setFl - true to set the register, false to read it
+ val_ptr - storage location for source / result. */
+int pvr2_hdw_register_access(struct pvr2_hdw *,
+ u32 chip_id,unsigned long reg_id,
+ int setFl,u32 *val_ptr);
/* The following entry points are all lower level things you normally don't
want to worry about. */
diff --git a/drivers/media/video/pvrusb2/pvrusb2-v4l2.c b/drivers/media/video/pvrusb2/pvrusb2-v4l2.c
index 3608c2f81df..156e375c93e 100644
--- a/drivers/media/video/pvrusb2/pvrusb2-v4l2.c
+++ b/drivers/media/video/pvrusb2/pvrusb2-v4l2.c
@@ -671,6 +671,20 @@ static int pvr2_v4l2_do_ioctl(struct inode *inode, struct file *file,
ret = 0;
break;
}
+#ifdef CONFIG_VIDEO_ADV_DEBUG
+ case VIDIOC_INT_G_REGISTER:
+ case VIDIOC_INT_S_REGISTER:
+ {
+ u32 val;
+ struct v4l2_register *req = (struct v4l2_register *)arg;
+ if (cmd == VIDIOC_INT_S_REGISTER) val = req->val;
+ ret = pvr2_hdw_register_access(
+ hdw,req->i2c_id,req->reg,
+ cmd == VIDIOC_INT_S_REGISTER,&val);
+ if (cmd == 0) req->val = val;
+ break;
+ }
+#endif
default :
ret = v4l_compat_translate_ioctl(inode,file,cmd,