bt832 driver

diff -r 02bfc69e3849 linux/drivers/media/video/bt8xx/bt832.c
@@ -1,287 +0,0 @@
-/* Driver for Bt832 CMOS Camera Video Processor
-    i2c-addresses: 0x88 or 0x8a
-
-  The BT832 interfaces to a Quartzsight Digital Camera (352x288, 25 or 30 fps)
-  via a 9 pin connector ( 4-wire SDATA, 2-wire i2c, SCLK, VCC, GND).
-  It outputs an 8-bit 4:2:2 YUV or YCrCb video signal which can be directly
-  connected to bt848/bt878 GPIO pins on this purpose.
-  (see: VLSI Vision Ltd. www.vvl.co.uk for camera datasheets)
-
-  Supported Cards:
-  -  Pixelview Rev.4E: 0x8a
-		GPIO 0x400000 toggles Bt832 RESET, and the chip changes to i2c 0x88 !
-
-  (c) Gunther Mayer, 2002
-
-  STATUS:
-  - detect chip and hexdump
-  - reset chip and leave low power mode
-  - detect camera present
-
-  TODO:
-  - make it work (find correct setup for Bt832 and Bt878)
-*/
-
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/i2c.h>
-#include <linux/types.h>
-#include "compat.h"
-#include <linux/videodev.h>
-#include <linux/init.h>
-#include <linux/errno.h>
-#include <linux/slab.h>
-#include <media/v4l2-common.h>
-
-#include "bttv.h"
-#include "bt832.h"
-
-MODULE_LICENSE("GPL");
-
-/* Addresses to scan */
-static unsigned short normal_i2c[] = { I2C_ADDR_BT832_ALT1>>1, I2C_ADDR_BT832_ALT2>>1,
-				       I2C_CLIENT_END };
-I2C_CLIENT_INSMOD;
-
-int debug;    /* debug output */
-module_param(debug,            int, 0644);
-
-/* ---------------------------------------------------------------------- */
-
-static int bt832_detach(struct i2c_client *client);
-
-
-static struct i2c_driver driver;
-static struct i2c_client client_template;
-
-struct bt832 {
-	struct i2c_client client;
-};
-
-int bt832_hexdump(struct i2c_client *i2c_client_s, unsigned char *buf)
-{
-	int i,rc;
-	buf[0]=0x80; // start at register 0 with auto-increment
-	if (1 != (rc = i2c_master_send(i2c_client_s,buf,1)))
-		v4l_err(i2c_client_s,"i2c i/o error: rc == %d (should be 1)\n",rc);
-
-	for(i=0;i<65;i++)
-		buf[i]=0;
-	if (65 != (rc=i2c_master_recv(i2c_client_s,buf,65)))
-		v4l_err(i2c_client_s,"i2c i/o error: rc == %d (should be 65)\n",rc);
-
-	// Note: On READ the first byte is the current index
-	//  (e.g. 0x80, what we just wrote)
-
-	if(debug>1) {
-		int i;
-		v4l_dbg(2, debug,i2c_client_s,"hexdump:");
-		for(i=1;i<65;i++) {
-			if(i!=1) {
-				if(((i-1)%8)==0) printk(" ");
-				if(((i-1)%16)==0) {
-					printk("\n");
-					v4l_dbg(2, debug,i2c_client_s,"hexdump:");
-				}
-			}
-			printk(" %02x",buf[i]);
-		}
-		printk("\n");
-	}
-	return 0;
-}
-
-// Return: 1 (is a bt832), 0 (No bt832 here)
-int bt832_init(struct i2c_client *i2c_client_s)
-{
-	unsigned char *buf;
-	int rc;
-
-	buf=kmalloc(65,GFP_KERNEL);
-	if (!buf) {
-		v4l_err(&t->client,
-			"Unable to allocate memory. Detaching.\n");
-		return 0;
-	}
-	bt832_hexdump(i2c_client_s,buf);
-
-	if(buf[0x40] != 0x31) {
-		v4l_err(i2c_client_s,"This i2c chip is no bt832 (id=%02x). Detaching.\n",buf[0x40]);
-		kfree(buf);
-		return 0;
-	}
-
-	v4l_err(i2c_client_s,"Write 0 tp VPSTATUS\n");
-	buf[0]=BT832_VP_STATUS; // Reg.52
-	buf[1]= 0x00;
-	if (2 != (rc = i2c_master_send(i2c_client_s,buf,2)))
-		v4l_err(i2c_client_s,"i2c i/o error VPS: rc == %d (should be 2)\n",rc);
-
-	bt832_hexdump(i2c_client_s,buf);
-
-
-	// Leave low power mode:
-	v4l_err(i2c_client_s,"leave low power mode.\n");
-	buf[0]=BT832_CAM_SETUP0; //0x39 57
-	buf[1]=0x08;
-	if (2 != (rc = i2c_master_send(i2c_client_s,buf,2)))
-		v4l_err(i2c_client_s,"i2c i/o error LLPM: rc == %d (should be 2)\n",rc);
-
-	bt832_hexdump(i2c_client_s,buf);
-
-	v4l_info(i2c_client_s,"Write 0 tp VPSTATUS\n");
-	buf[0]=BT832_VP_STATUS; // Reg.52
-	buf[1]= 0x00;
-	if (2 != (rc = i2c_master_send(i2c_client_s,buf,2)))
-		v4l_err(i2c_client_s,"i2c i/o error VPS: rc == %d (should be 2)\n",rc);
-
-	bt832_hexdump(i2c_client_s,buf);
-
-
-	// Enable Output
-	v4l_info(i2c_client_s,"Enable Output\n");
-	buf[0]=BT832_VP_CONTROL1; // Reg.40
-	buf[1]= 0x27 & (~0x01); // Default | !skip
-	if (2 != (rc = i2c_master_send(i2c_client_s,buf,2)))
-		v4l_err(i2c_client_s,"i2c i/o error EO: rc == %d (should be 2)\n",rc);
-
-	bt832_hexdump(i2c_client_s,buf);
-
-#if 0
-	// Full 30/25 Frame rate
-	v4l_err(i2c_client_s,"Full 30/25 Frame rate\n");
-	buf[0]=BT832_VP_CONTROL0; // Reg.39
-	buf[1]= 0x00;
-	if (2 != (rc = i2c_master_send(i2c_client_s,buf,2)))
-		v4l_err(i2c_client_s,"i2c i/o error FFR: rc == %d (should be 2)\n",rc);
-
-	bt832_hexdump(i2c_client_s,buf);
-#endif
-
-#if 1
-	// for testing (even works when no camera attached)
-	v4l_info(i2c_client_s,"*** Generate NTSC M Bars *****\n");
-	buf[0]=BT832_VP_TESTCONTROL0; // Reg. 42
-	buf[1]=3; // Generate NTSC System M bars, Generate Frame timing internally
-	if (2 != (rc = i2c_master_send(i2c_client_s,buf,2)))
-		v4l_info(i2c_client_s,"i2c i/o error MBAR: rc == %d (should be 2)\n",rc);
-#endif
-
-	v4l_info(i2c_client_s,"Camera Present: %s\n",
-		(buf[1+BT832_CAM_STATUS] & BT832_56_CAMERA_PRESENT) ? "yes":"no");
-
-	bt832_hexdump(i2c_client_s,buf);
-	kfree(buf);
-	return 1;
-}
-
-
-
-static int bt832_attach(struct i2c_adapter *adap, int addr, int kind)
-{
-	struct bt832 *t;
-
-	client_template.adapter = adap;
-	client_template.addr    = addr;
-
-	if (NULL == (t = kzalloc(sizeof(*t), GFP_KERNEL)))
-		return -ENOMEM;
-	t->client = client_template;
-	i2c_set_clientdata(&t->client, t);
-	i2c_attach_client(&t->client);
-
-	v4l_info(&t->client,"chip found @ 0x%x\n", addr<<1);
-
-	if(! bt832_init(&t->client)) {
-		bt832_detach(&t->client);
-		return -1;
-	}
-
-	return 0;
-}
-
-static int bt832_probe(struct i2c_adapter *adap)
-{
-	if (adap->class & I2C_CLASS_TV_ANALOG)
-		return i2c_probe(adap, &addr_data, bt832_attach);
-	return 0;
-}
-
-static int bt832_detach(struct i2c_client *client)
-{
-	struct bt832 *t = i2c_get_clientdata(client);
-
-	v4l_info(&t->client,"dettach\n");
-	i2c_detach_client(client);
-	kfree(t);
-	return 0;
-}
-
-static int
-bt832_command(struct i2c_client *client, unsigned int cmd, void *arg)
-{
-	struct bt832 *t = i2c_get_clientdata(client);
-
-	if (debug>1)
-		v4l_i2c_print_ioctl(&t->client,cmd);
-
-	switch (cmd) {
-		case BT832_HEXDUMP: {
-			unsigned char *buf;
-			buf = kmalloc(65, GFP_KERNEL);
-			if (!buf) {
-				v4l_err(&t->client,
-					"Unable to allocate memory\n");
-				break;
-			}
-			bt832_hexdump(&t->client,buf);
-			kfree(buf);
-		}
-		break;
-		case BT832_REATTACH:
-			v4l_info(&t->client,"re-attach\n");
-			i2c_del_driver(&driver);
-			i2c_add_driver(&driver);
-		break;
-	}
-	return 0;
-}
-
-/* ----------------------------------------------------------------------- */
-
-static struct i2c_driver driver = {
-	.driver = {
-		.name   = "bt832",
-	},
-	.id             = 0, /* FIXME */
-	.attach_adapter = bt832_probe,
-	.detach_client  = bt832_detach,
-	.command        = bt832_command,
-};
-static struct i2c_client client_template =
-{
-	.name       = "bt832",
-	.driver     = &driver,
-};
-
-
-static int __init bt832_init_module(void)
-{
-	return i2c_add_driver(&driver);
-}
-
-static void __exit bt832_cleanup_module(void)
-{
-	i2c_del_driver(&driver);
-}
-
-module_init(bt832_init_module);
-module_exit(bt832_cleanup_module);
-
-/*
- * Overrides for Emacs so that we follow Linus's tabbing style.
- * ---------------------------------------------------------------------------
- * Local variables:
- * c-basic-offset: 8
- * End:
- */


bt832 driver

Mauro Carvalho Chehab

hermann pitton

Mauro Carvalho Chehab

hermann pitton

Mauro Carvalho Chehab

hermann pitton

Hans Verkuil

Mauro Carvalho Chehab

hermann pitton