[media] btcx-risc: move to bt8xx

The btcx-risc module is no longer used by other drivers except for bttv.
So move it from common to bt8xx and make it part of the bttv driver instead
of as a separate module.

This module should never have been a common module since most of the code
has always been bttv specific.

Signed-off-by: Hans Verkuil <[e-mail]>
Signed-off-by: Mauro Carvalho Chehab <[e-mail]>

drivers/media/common/Kconfig

···
 config VIDEO_CX2341X
 	tristate
 
-config VIDEO_BTCX
-	depends on PCI
-	tristate
-
 config VIDEO_TVEEPROM
 	tristate
 	depends on I2C

drivers/media/common/Makefile

···
 obj-y += b2c2/ saa7146/ siano/
 obj-$(CONFIG_VIDEO_CX2341X) += cx2341x.o
-obj-$(CONFIG_VIDEO_BTCX)  += btcx-risc.o
 obj-$(CONFIG_VIDEO_TVEEPROM) += tveeprom.o
 obj-$(CONFIG_CYPRESS_FIRMWARE) += cypress_firmware.o

drivers/media/common/btcx-risc.c drivers/media/pci/bt8xx/btcx-risc.c

···
 
 #include "btcx-risc.h"
 
-MODULE_DESCRIPTION("some code shared by bttv and cx88xx drivers");
-MODULE_AUTHOR("Gerd Knorr");
-MODULE_LICENSE("GPL");
-
-static unsigned int debug;
-module_param(debug, int, 0644);
-MODULE_PARM_DESC(debug,"debug messages, default is 0 (no)");
+static unsigned int btcx_debug;
+module_param(btcx_debug, int, 0644);
+MODULE_PARM_DESC(btcx_debug,"debug messages, default is 0 (no)");
 
 /* ---------------------------------------------------------- */
 /* allocate/free risc memory                                  */
···
 {
 	if (NULL == risc->cpu)
 		return;
-	if (debug) {
+	if (btcx_debug) {
 		memcnt--;
 		printk("btcx: riscmem free [%d] dma=%lx\n",
 		       memcnt, (unsigned long)risc->dma);
···
 		risc->cpu  = cpu;
 		risc->dma  = dma;
 		risc->size = size;
-		if (debug) {
+		if (btcx_debug) {
 			memcnt++;
 			printk("btcx: riscmem alloc [%d] dma=%lx cpu=%p size=%d\n",
 			       memcnt, (unsigned long)dma, cpu, size);
···
 	dx = nx - win->left;
 	win->left  = nx;
 	win->width = nw;
-	if (debug)
+	if (btcx_debug)
 		printk(KERN_DEBUG "btcx: window align %dx%d+%d+%d [dx=%d]\n",
 		       win->width, win->height, win->left, win->top, dx);
 
···
 			nw += mask+1;
 		clips[i].c.left  = nx;
 		clips[i].c.width = nw;
-		if (debug)
+		if (btcx_debug)
 			printk(KERN_DEBUG "btcx:   clip align %dx%d+%d+%d\n",
 			       clips[i].c.width, clips[i].c.height,
 			       clips[i].c.left, clips[i].c.top);
···
 	*nskips = skip;
 	*maxy = maxline;
 
-	if (debug) {
+	if (btcx_debug) {
 		printk(KERN_DEBUG "btcx: skips line %d-%d:",line,maxline);
 		for (skip = 0; skip < *nskips; skip++) {
 			printk(" %d-%d",skips[skip].start,skips[skip].end);
···
 		printk("\n");
 	}
 }
-
-/* ---------------------------------------------------------- */
-
-EXPORT_SYMBOL(btcx_riscmem_alloc);
-EXPORT_SYMBOL(btcx_riscmem_free);
-
-EXPORT_SYMBOL(btcx_screen_clips);
-EXPORT_SYMBOL(btcx_align);
-EXPORT_SYMBOL(btcx_sort_clips);
-EXPORT_SYMBOL(btcx_calc_skips);

drivers/media/pci/bt8xx/Kconfig

···
 	tristate "BT848 Video For Linux"
 	depends on VIDEO_DEV && PCI && I2C && VIDEO_V4L2
 	select I2C_ALGOBIT
-	select VIDEO_BTCX
 	select VIDEOBUF_DMA_SG
 	depends on RC_CORE
 	select VIDEO_TUNER

drivers/media/pci/bt8xx/Makefile

···
 bttv-objs      :=      bttv-driver.o bttv-cards.o bttv-if.o \
 		       bttv-risc.o bttv-vbi.o bttv-i2c.o bttv-gpio.o \
-		       bttv-input.o bttv-audio-hook.o
+		       bttv-input.o bttv-audio-hook.o btcx-risc.o
 
 obj-$(CONFIG_VIDEO_BT848) += bttv.o
 obj-$(CONFIG_DVB_BT8XX) += bt878.o dvb-bt8xx.o dst.o dst_ca.o

drivers/media/pci/bt8xx/btcx-risc.h

···
+struct btcx_riscmem {
+	unsigned int   size;
+	__le32         *cpu;
+	__le32         *jmp;
+	dma_addr_t     dma;
+};
+
+struct btcx_skiplist {
+	int start;
+	int end;
+};
+
+int  btcx_riscmem_alloc(struct pci_dev *pci,
+			struct btcx_riscmem *risc,
+			unsigned int size);
+void btcx_riscmem_free(struct pci_dev *pci,
+		       struct btcx_riscmem *risc);
+
+int btcx_screen_clips(int swidth, int sheight, struct v4l2_rect *win,
+		      struct v4l2_clip *clips, unsigned int n);
+int btcx_align(struct v4l2_rect *win, struct v4l2_clip *clips,
+	       unsigned int n, int mask);
+void btcx_sort_clips(struct v4l2_clip *clips, unsigned int nclips);
+void btcx_calc_skips(int line, int width, int *maxy,
+		     struct btcx_skiplist *skips, unsigned int *nskips,
+		     const struct v4l2_clip *clips, unsigned int nclips);