patch-2.4.0-test7 linux/drivers/char/bttv-if.c

• Lines: 338
• Date: Wed Dec 31 16:00:00 1969
• Orig file: v2.4.0-test6/linux/drivers/char/bttv-if.c
• Orig date: Thu Jul 27 17:38:00 2000

diff -u --recursive --new-file v2.4.0-test6/linux/drivers/char/bttv-if.c linux/drivers/char/bttv-if.c
@@ -1,337 +0,0 @@
-/*
-    bttv-if.c  --  interfaces to other kernel modules
-	all the i2c code is here
-	also the gpio interface exported by bttv (used by lirc)
-
-
-    bttv - Bt848 frame grabber driver
-
-    Copyright (C) 1996,97,98 Ralph  Metzler (rjkm@thp.uni-koeln.de)
-                           & Marcus Metzler (mocm@thp.uni-koeln.de)
-    (c) 1999,2000 Gerd Knorr <kraxel@goldbach.in-berlin.de>
-
-    This program is free software; you can redistribute it and/or modify
-    it under the terms of the GNU General Public License as published by
-    the Free Software Foundation; either version 2 of the License, or
-    (at your option) any later version.
-
-    This program is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-    GNU General Public License for more details.
-
-    You should have received a copy of the GNU General Public License
-    along with this program; if not, write to the Free Software
-    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
-    
-*/
-
-#define __NO_VERSION__ 1
-
-#include <linux/version.h>
-#include <linux/module.h>
-#include <linux/init.h>
-
-#include <asm/io.h>
-
-#include "bttv.h"
-#include "tuner.h"
-
-
-EXPORT_SYMBOL(bttv_get_cardinfo);
-EXPORT_SYMBOL(bttv_get_id);
-EXPORT_SYMBOL(bttv_gpio_enable);
-EXPORT_SYMBOL(bttv_read_gpio);
-EXPORT_SYMBOL(bttv_write_gpio);
-EXPORT_SYMBOL(bttv_get_gpio_queue);
-
-/* ----------------------------------------------------------------------- */
-/* Exported functions - for other modules which want to access the         */
-/*                      gpio ports (IR for example)                        */
-/*                      see bttv.h for comments                            */
-
-int bttv_get_cardinfo(unsigned int card, int *type, int *cardid)
-{
-	if (card >= bttv_num) {
-		return -1;
-	}
-	*type   = bttvs[card].type;
-	*cardid = bttvs[card].cardid;
-	return 0;
-}
-
-int bttv_get_id(unsigned int card)
-{
-	printk("bttv_get_id is obsolete, use bttv_get_cardinfo instead\n");
-	if (card >= bttv_num) {
-		return -1;
-	}
-	return bttvs[card].type;
-}
-
-int bttv_gpio_enable(unsigned int card, unsigned long mask, unsigned long data)
-{
-	struct bttv *btv;
-
-	if (card >= bttv_num) {
-		return -EINVAL;
-	}
-	
-	btv = &bttvs[card];
-	btaor(data, ~mask, BT848_GPIO_OUT_EN);
-	return 0;
-}
-
-int bttv_read_gpio(unsigned int card, unsigned long *data)
-{
-	struct bttv *btv;
-	
-	if (card >= bttv_num) {
-		return -EINVAL;
-	}
-
-	btv = &bttvs[card];
-
-	if(btv->shutdown) {
-		return -ENODEV;
-	}
-
-/* prior setting BT848_GPIO_REG_INP is (probably) not needed 
-   because we set direct input on init */
-	*data = btread(BT848_GPIO_DATA);
-	return 0;
-}
-
-int bttv_write_gpio(unsigned int card, unsigned long mask, unsigned long data)
-{
-	struct bttv *btv;
-	
-	if (card >= bttv_num) {
-		return -EINVAL;
-	}
-
-	btv = &bttvs[card];
-
-/* prior setting BT848_GPIO_REG_INP is (probably) not needed 
-   because direct input is set on init */
-	btaor(data & mask, ~mask, BT848_GPIO_DATA);
-	return 0;
-}
-
-wait_queue_head_t* bttv_get_gpio_queue(unsigned int card)
-{
-	struct bttv *btv;
-
-	if (card >= bttv_num) {
-		return NULL;
-	}
-
-	btv = &bttvs[card];
-	if (bttvs[card].shutdown) {
-		return NULL;
-	}
-	return &btv->gpioq;
-}
-
-
-/* ----------------------------------------------------------------------- */
-/* I2C functions                                                           */
-
-void bttv_bit_setscl(void *data, int state)
-{
-	struct bttv *btv = (struct bttv*)data;
-
-	if (state)
-		btv->i2c_state |= 0x02;
-	else
-		btv->i2c_state &= ~0x02;
-	btwrite(btv->i2c_state, BT848_I2C);
-	btread(BT848_I2C);
-}
-
-void bttv_bit_setsda(void *data, int state)
-{
-	struct bttv *btv = (struct bttv*)data;
-
-	if (state)
-		btv->i2c_state |= 0x01;
-	else
-		btv->i2c_state &= ~0x01;
-	btwrite(btv->i2c_state, BT848_I2C);
-	btread(BT848_I2C);
-}
-
-static int bttv_bit_getscl(void *data)
-{
-	struct bttv *btv = (struct bttv*)data;
-	int state;
-	
-	state = btread(BT848_I2C) & 0x02 ? 1 : 0;
-	return state;
-}
-
-static int bttv_bit_getsda(void *data)
-{
-	struct bttv *btv = (struct bttv*)data;
-	int state;
-
-	state = btread(BT848_I2C) & 0x01;
-	return state;
-}
-
-static void bttv_inc_use(struct i2c_adapter *adap)
-{
-	MOD_INC_USE_COUNT;
-}
-
-static void bttv_dec_use(struct i2c_adapter *adap)
-{
-	MOD_DEC_USE_COUNT;
-}
-
-static int attach_inform(struct i2c_client *client)
-{
-        struct bttv *btv = (struct bttv*)client->adapter->data;
-	int i;
-
-	for (i = 0; i < I2C_CLIENTS_MAX; i++) {
-		if (btv->i2c_clients[i] == NULL ||
-		    btv->i2c_clients[i]->driver->id == client->driver->id) {
-			btv->i2c_clients[i] = client;
-			break;
-		}
-	}
-	if (btv->tuner_type != -1)
-		bttv_call_i2c_clients(btv,TUNER_SET_TYPE,&btv->tuner_type);
-        if (bttv_verbose)
-		printk("bttv%d: i2c attach [%s]\n",btv->nr,client->name);
-        return 0;
-}
-
-static int detach_inform(struct i2c_client *client)
-{
-        struct bttv *btv = (struct bttv*)client->adapter->data;
-	int i;
-
-        if (bttv_verbose)
-		printk("bttv%d: i2c detach [%s]\n",btv->nr,client->name);
-	for (i = 0; i < I2C_CLIENTS_MAX; i++) {
-		if (NULL != btv->i2c_clients[i] &&
-		    btv->i2c_clients[i]->driver->id == client->driver->id) {
-			btv->i2c_clients[i] = NULL;
-			break;
-		}
-	}
-        return 0;
-}
-
-void bttv_call_i2c_clients(struct bttv *btv, unsigned int cmd, void *arg)
-{
-	int i;
-	
-	for (i = 0; i < I2C_CLIENTS_MAX; i++) {
-		if (NULL == btv->i2c_clients[i])
-			continue;
-		if (NULL == btv->i2c_clients[i]->driver->command)
-			continue;
-		btv->i2c_clients[i]->driver->command(
-			btv->i2c_clients[i],cmd,arg);
-	}
-}
-
-struct i2c_algo_bit_data bttv_i2c_algo_template = {
-	NULL,
-	bttv_bit_setsda,
-	bttv_bit_setscl,
-	bttv_bit_getsda,
-	bttv_bit_getscl,
-	10, 10, 100,
-};
-
-struct i2c_adapter bttv_i2c_adap_template = {
-	"bt848",
-	I2C_HW_B_BT848,
-	NULL,
-	NULL,
-	bttv_inc_use,
-	bttv_dec_use,
-	attach_inform,
-	detach_inform,
-	NULL,
-};
-
-struct i2c_client bttv_i2c_client_template = {
-        "bttv internal",
-        -1,
-        0,
-        0,
-        NULL,
-        NULL
-};
-
-
-/* read I2C */
-int bttv_I2CRead(struct bttv *btv, unsigned char addr, char *probe_for) 
-{
-        unsigned char buffer = 0;
-
-	if (0 != btv->i2c_ok)
-		return -1;
-	if (bttv_verbose && NULL != probe_for)
-		printk(KERN_INFO "bttv%d: i2c: checking for %s @ 0x%02x... ",
-		       btv->nr,probe_for,addr);
-        btv->i2c_client.addr = addr >> 1;
-        if (1 != i2c_master_recv(&btv->i2c_client, &buffer, 1)) {
-		if (NULL != probe_for) {
-			if (bttv_verbose)
-				printk("not found\n");
-		} else
-			printk(KERN_WARNING "bttv%d: i2c read 0x%x: error\n",
-			       btv->nr,addr);
-                return -1;
-	}
-	if (bttv_verbose && NULL != probe_for)
-		printk("found\n");
-        return buffer;
-}
-
-/* write I2C */
-int bttv_I2CWrite(struct bttv *btv, unsigned char addr, unsigned char b1,
-                    unsigned char b2, int both)
-{
-        unsigned char buffer[2];
-        int bytes = both ? 2 : 1;
-
-	if (0 != btv->i2c_ok)
-		return -1;
-        btv->i2c_client.addr = addr >> 1;
-        buffer[0] = b1;
-        buffer[1] = b2;
-        if (bytes != i2c_master_send(&btv->i2c_client, buffer, bytes))
-		return -1;
-        return 0;
-}
-
-/* read EEPROM content */
-void __devinit bttv_readee(struct bttv *btv, unsigned char *eedata, int addr)
-{
-	int i;
-        
-	if (bttv_I2CWrite(btv, addr, 0, -1, 0)<0) {
-		printk(KERN_WARNING "bttv: readee error\n");
-		return;
-	}
-	btv->i2c_client.addr = addr >> 1;
-	for (i=0; i<256; i+=16) {
-		if (16 != i2c_master_recv(&btv->i2c_client,eedata+i,16)) {
-			printk(KERN_WARNING "bttv: readee error\n");
-			break;
-		}
-	}
-}
-
-/*
- * Local variables:
- * c-basic-offset: 8
- * End:
- */