V4L/DVB (6333): cx88: Change void* card_priv to struct vp3054_i2c_state

card_priv was only used to store a pointer to the vp3054 state struct.
There's no need to use a void * since it doesn't have multiple types.

Make the field conditional on VP3045 support.  It was already conditional on
DVB support, but it's only used if VP3045 support is on, so that makes for a
better option to check.
Signed-off-by: Trent Piepho <xyzzy@speakeasy.org>
Reviewed-by: Michael Krufky <mkrufky@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>

drivers/media/video/cx88/cx88-dvb.c

@@ -475,8 +475,9 @@ static int dvb_register(struct cx8802_dev *dev)
 		break;
 	case CX88_BOARD_DNTV_LIVE_DVB_T_PRO:
 #if defined(CONFIG_VIDEO_CX88_VP3054) || (defined(CONFIG_VIDEO_CX88_VP3054_MODULE) && defined(MODULE))
+		/* MT352 is on a secondary I2C bus made from some GPIO lines */
 		dev->dvb.frontend = dvb_attach(mt352_attach, &dntv_live_dvbt_pro_config,
-			&((struct vp3054_i2c_state *)dev->card_priv)->adap);
+					       &dev->vp3054->adap);
 		if (dev->dvb.frontend != NULL) {
 			dvb_attach(dvb_pll_attach, dev->dvb.frontend, 0x61,
 				   &dev->core->i2c_adap, DVB_PLL_FMD1216ME);

drivers/media/video/cx88/cx88-vp3054-i2c.c

@@ -41,7 +41,7 @@ static void vp3054_bit_setscl(void *data, int state)
 {
 	struct cx8802_dev *dev = data;
 	struct cx88_core *core = dev->core;
-	struct vp3054_i2c_state *vp3054_i2c = dev->card_priv;
+	struct vp3054_i2c_state *vp3054_i2c = dev->vp3054;
 
 	if (state) {
 		vp3054_i2c->state |=  0x0001;	/* SCL high */
@@ -58,7 +58,7 @@ static void vp3054_bit_setsda(void *data, int state)
 {
 	struct cx8802_dev *dev = data;
 	struct cx88_core *core = dev->core;
-	struct vp3054_i2c_state *vp3054_i2c = dev->card_priv;
+	struct vp3054_i2c_state *vp3054_i2c = dev->vp3054;
 
 	if (state) {
 		vp3054_i2c->state |=  0x0002;	/* SDA high */
@@ -113,10 +113,10 @@ int vp3054_i2c_probe(struct cx8802_dev *dev)
 	if (core->boardnr != CX88_BOARD_DNTV_LIVE_DVB_T_PRO)
 		return 0;
 
-	dev->card_priv = kzalloc(sizeof(*vp3054_i2c), GFP_KERNEL);
-	if (dev->card_priv == NULL)
+	vp3054_i2c = kzalloc(sizeof(*vp3054_i2c), GFP_KERNEL);
+	if (vp3054_i2c == NULL)
 		return -ENOMEM;
-	vp3054_i2c = dev->card_priv;
+	dev->vp3054 = vp3054_i2c;
 
 	memcpy(&vp3054_i2c->algo, &vp3054_i2c_algo_template,
 	       sizeof(vp3054_i2c->algo));
@@ -139,8 +139,8 @@ int vp3054_i2c_probe(struct cx8802_dev *dev)
 	if (0 != rc) {
 		printk("%s: vp3054_i2c register FAILED\n", core->name);
 
-		kfree(dev->card_priv);
-		dev->card_priv = NULL;
+		kfree(dev->vp3054);
+		dev->vp3054 = NULL;
 	}
 
 	return rc;
@@ -148,7 +148,7 @@ int vp3054_i2c_probe(struct cx8802_dev *dev)
 
 void vp3054_i2c_remove(struct cx8802_dev *dev)
 {
-	struct vp3054_i2c_state *vp3054_i2c = dev->card_priv;
+	struct vp3054_i2c_state *vp3054_i2c = dev->vp3054;
 
 	if (vp3054_i2c == NULL ||
 	    dev->core->boardnr != CX88_BOARD_DNTV_LIVE_DVB_T_PRO)

drivers/media/video/cx88/cx88.h

@@ -467,8 +467,12 @@ struct cx8802_dev {
 #if defined(CONFIG_VIDEO_CX88_DVB) || defined(CONFIG_VIDEO_CX88_DVB_MODULE)
 	/* for dvb only */
 	struct videobuf_dvb        dvb;
+#endif
 
-	void			   *card_priv;
+#if defined(CONFIG_VIDEO_CX88_VP3054) || \
+    defined(CONFIG_VIDEO_CX88_VP3054_MODULE)
+	/* For VP3045 secondary I2C bus support */
+	struct vp3054_i2c_state	   *vp3054;
 #endif
 	/* for switching modulation types */
 	unsigned char              ts_gen_cntrl;