cx88: Copy board information into card state

From: Trent Piepho <xyzzy@speakeasy.org>

The cx88 driver state stored the ID of the board type in core->board.  Every
time the driver need to get some information about the board configuration, it
uses the board number as an index into board configuration array.

This patch changes it so that the board number is in core->boardnr, and
core->board is a copy of the board configuration information.  This allows
access to board information without the extra indirection.  e.g.
cx88_boards[core->board].mpeg becomes core->board.mpeg.

This has a number of advantages:
- The code is simpler to write.

- It compiles to be smaller and faster, without needing the extra array lookup
  to get at the board information.

- The cx88_boards array no longer needs to be exported to all cx88 modules.

- The boards array can be made const

- It should be possible to avoid keeping the (large) cx88_boards array around
  after the module is loaded.

- If module parameters or eeprom info override some board configuration
  setting, it's not necessary to modify the boards array, which would
  affect all boards of the same type.

Signed-off-by: Trent Piepho <xyzzy@speakeasy.org>

1 files changed, 9 insertions, 9 deletions

diff --git a/linux/drivers/media/video/cx88/cx88-blackbird.c b/linux/drivers/media/video/cx88/cx88-blackbird.c
index 049b9a5eb..8d3f39360 100644
--- a/linux/drivers/media/video/cx88/cx88-blackbird.c
+++ b/linux/drivers/media/video/cx88/cx88-blackbird.c
@@ -752,7 +752,7 @@ static int vidioc_querycap (struct file *file, void  *priv,
 	struct cx88_core  *core = dev->core;
 
 	strcpy(cap->driver, "cx88_blackbird");
-	strlcpy(cap->card, cx88_boards[core->board].name,sizeof(cap->card));
+	strlcpy(cap->card, core->board.name, sizeof(cap->card));
 	sprintf(cap->bus_info,"PCI:%s",pci_name(dev->pci));
 	cap->version = CX88_VERSION_CODE;
 	cap->capabilities =
@@ -763,7 +763,7 @@ static int vidioc_querycap (struct file *file, void  *priv,
 		V4L2_CAP_VIDEO_CAPTURE |
 		V4L2_CAP_READWRITE     |
 		V4L2_CAP_STREAMING;
-	if (UNSET != core->tuner_type)
+	if (UNSET != core->board.tuner_type)
 		cap->capabilities |= V4L2_CAP_TUNER;
 	return 0;
 }
@@ -1016,7 +1016,7 @@ static int vidioc_g_frequency (struct file *file, void *priv,
 	struct cx8802_fh  *fh   = priv;
 	struct cx88_core  *core = fh->dev->core;
 
-	if (unlikely(UNSET == core->tuner_type))
+	if (unlikely(UNSET == core->board.tuner_type))
 		return -EINVAL;
 
 	f->type = V4L2_TUNER_ANALOG_TV;
@@ -1054,7 +1054,7 @@ static int vidioc_g_tuner (struct file *file, void *priv,
 	struct cx88_core  *core = ((struct cx8802_fh *)priv)->dev->core;
 	u32 reg;
 
-	if (unlikely(UNSET == core->tuner_type))
+	if (unlikely(UNSET == core->board.tuner_type))
 		return -EINVAL;
 	if (0 != t->index)
 		return -EINVAL;
@@ -1075,7 +1075,7 @@ static int vidioc_s_tuner (struct file *file, void *priv,
 {
 	struct cx88_core  *core = ((struct cx8802_fh *)priv)->dev->core;
 
-	if (UNSET == core->tuner_type)
+	if (UNSET == core->board.tuner_type)
 		return -EINVAL;
 	if (0 != t->index)
 		return -EINVAL;
@@ -1272,7 +1272,7 @@ static int cx8802_blackbird_advise_acquire(struct cx8802_driver *drv)
 	struct cx88_core *core = drv->core;
 	int err = 0;
 
-	switch (core->board) {
+	switch (core->boardnr) {
 	case CX88_BOARD_HAUPPAUGE_HVR1300:
 		/* By default, core setup will leave the cx22702 out of reset, on the bus.
 		 * We left the hardware on power up with the cx22702 active.
@@ -1294,7 +1294,7 @@ static int cx8802_blackbird_advise_release(struct cx8802_driver *drv)
 	struct cx88_core *core = drv->core;
 	int err = 0;
 
-	switch (core->board) {
+	switch (core->boardnr) {
 	case CX88_BOARD_HAUPPAUGE_HVR1300:
 		/* Exit leaving the cx23416 on the bus */
 #if 0
@@ -1345,13 +1345,13 @@ static int cx8802_blackbird_probe(struct cx8802_driver *drv)
 
 	dprintk( 1, "%s\n", __FUNCTION__);
 	dprintk( 1, " ->being probed by Card=%d Name=%s, PCI %02x:%02x\n",
-		core->board,
+		core->boardnr,
 		core->name,
 		core->pci_bus,
 		core->pci_slot);
 
 	err = -ENODEV;
-	if (!(cx88_boards[core->board].mpeg & CX88_MPEG_BLACKBIRD))
+	if (!(core->board.mpeg & CX88_MPEG_BLACKBIRD))
 		goto fail_core;
 
 	dev->width = 720;