/*
+
bttv-i2c.c -- all the i2c code is here
bttv - Bt848 frame grabber driver
Copyright (C) 1996,97,98 Ralph Metzler (rjkm@thp.uni-koeln.de)
- & Marcus Metzler (mocm@thp.uni-koeln.de)
+ & Marcus Metzler (mocm@thp.uni-koeln.de)
(c) 1999-2003 Gerd Knorr <kraxel@bytesex.org>
This program is free software; you can redistribute it and/or modify
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.
-
+
*/
#include <linux/module.h>
+#include <linux/moduleparam.h>
#include <linux/init.h>
#include <linux/delay.h>
-#include <asm/io.h>
#include "bttvp.h"
+#include <media/v4l2-common.h>
+#include <linux/jiffies.h>
+#include <asm/io.h>
static struct i2c_algo_bit_data bttv_i2c_algo_bit_template;
static struct i2c_adapter bttv_i2c_adap_sw_template;
static struct i2c_adapter bttv_i2c_adap_hw_template;
static struct i2c_client bttv_i2c_client_template;
-#ifndef I2C_PEC
-static void bttv_inc_use(struct i2c_adapter *adap);
-static void bttv_dec_use(struct i2c_adapter *adap);
-#endif
static int attach_inform(struct i2c_client *client);
-static int i2c_debug = 0;
-static int i2c_hw = 0;
-MODULE_PARM(i2c_debug,"i");
-MODULE_PARM(i2c_hw,"i");
+static int i2c_debug;
+static int i2c_hw;
+static int i2c_scan;
+module_param(i2c_debug, int, 0644);
+module_param(i2c_hw, int, 0444);
+module_param(i2c_scan, int, 0444);
+MODULE_PARM_DESC(i2c_scan,"scan i2c bus at insmod time");
/* ----------------------------------------------------------------------- */
/* I2C functions - bitbanging adapter (software i2c) */
-void bttv_bit_setscl(void *data, int state)
+static void bttv_bit_setscl(void *data, int state)
{
struct bttv *btv = (struct bttv*)data;
btread(BT848_I2C);
}
-void bttv_bit_setsda(void *data, int state)
+static void bttv_bit_setsda(void *data, int state)
{
struct bttv *btv = (struct bttv*)data;
{
struct bttv *btv = (struct bttv*)data;
int state;
-
+
state = btread(BT848_I2C) & 0x02 ? 1 : 0;
return state;
}
};
static struct i2c_adapter bttv_i2c_adap_sw_template = {
-#ifdef I2C_PEC
.owner = THIS_MODULE,
-#else
- .inc_use = bttv_inc_use,
- .dec_use = bttv_dec_use,
-#endif
-#ifdef I2C_CLASS_TV_ANALOG
.class = I2C_CLASS_TV_ANALOG,
-#endif
- I2C_DEVNAME("bt848"),
+ .name = "bttv",
.id = I2C_HW_B_BT848,
.client_register = attach_inform,
};
/* ----------------------------------------------------------------------- */
/* I2C functions - hardware i2c */
-static int algo_control(struct i2c_adapter *adapter,
+static int algo_control(struct i2c_adapter *adapter,
unsigned int cmd, unsigned long arg)
{
return 0;
static int
bttv_i2c_wait_done(struct bttv *btv)
{
- DECLARE_WAITQUEUE(wait, current);
int rc = 0;
-
- add_wait_queue(&btv->i2c_queue, &wait);
- set_current_state(TASK_INTERRUPTIBLE);
- if (0 == btv->i2c_done)
- schedule_timeout(HZ/50+1);
- set_current_state(TASK_RUNNING);
- remove_wait_queue(&btv->i2c_queue, &wait);
-
- if (0 == btv->i2c_done)
- /* timeout */
- rc = -EIO;
+
+ /* timeout */
+ if (wait_event_interruptible_timeout(btv->i2c_queue,
+ btv->i2c_done, msecs_to_jiffies(85)) == -ERESTARTSYS)
+
+ rc = -EIO;
+
if (btv->i2c_done & BT848_INT_RACK)
rc = 1;
btv->i2c_done = 0;
err:
if (i2c_debug)
printk(" ERR: %d\n",retval);
- return retval;
+ return retval;
}
-int bttv_i2c_xfer(struct i2c_adapter *i2c_adap, struct i2c_msg msgs[], int num)
+static int bttv_i2c_xfer(struct i2c_adapter *i2c_adap, struct i2c_msg *msgs, int num)
{
struct bttv *btv = i2c_get_adapdata(i2c_adap);
int retval = 0;
}
static struct i2c_algorithm bttv_algo = {
- .name = "bt878",
- .id = I2C_ALGO_BIT | I2C_HW_B_BT848 /* FIXME */,
.master_xfer = bttv_i2c_xfer,
.algo_control = algo_control,
.functionality = functionality,
};
static struct i2c_adapter bttv_i2c_adap_hw_template = {
-#ifdef I2C_PEC
- .owner = THIS_MODULE,
-#else
- .inc_use = bttv_inc_use,
- .dec_use = bttv_dec_use,
-#endif
-#ifdef I2C_CLASS_TV_ANALOG
+ .owner = THIS_MODULE,
.class = I2C_CLASS_TV_ANALOG,
-#endif
- I2C_DEVNAME("bt878"),
- .id = I2C_ALGO_BIT | I2C_HW_B_BT848 /* FIXME */,
+ .name = "bt878",
+ .id = I2C_HW_B_BT848 /* FIXME */,
.algo = &bttv_algo,
.client_register = attach_inform,
};
/* ----------------------------------------------------------------------- */
/* I2C functions - common stuff */
-#ifndef I2C_PEC
-static void bttv_inc_use(struct i2c_adapter *adap)
+static int attach_inform(struct i2c_client *client)
{
- MOD_INC_USE_COUNT;
-}
+ struct bttv *btv = i2c_get_adapdata(client->adapter);
+ int addr=ADDR_UNSET;
-static void bttv_dec_use(struct i2c_adapter *adap)
-{
- MOD_DEC_USE_COUNT;
-}
-#endif
-static int attach_inform(struct i2c_client *client)
-{
- struct bttv *btv = i2c_get_adapdata(client->adapter);
-
- if (btv->tuner_type != UNSET)
- bttv_call_i2c_clients(btv,TUNER_SET_TYPE,&btv->tuner_type);
- if (btv->pinnacle_id != UNSET)
- bttv_call_i2c_clients(btv,AUDC_CONFIG_PINNACLE,
- &btv->pinnacle_id);
-
- if (bttv_debug)
- printk("bttv%d: i2c attach [client=%s]\n",
- btv->c.nr, i2c_clientname(client));
- return 0;
+ if (ADDR_UNSET != bttv_tvcards[btv->c.type].tuner_addr)
+ addr = bttv_tvcards[btv->c.type].tuner_addr;
+
+
+ if (bttv_debug)
+ printk(KERN_DEBUG "bttv%d: %s i2c attach [addr=0x%x,client=%s]\n",
+ btv->c.nr, client->driver->driver.name, client->addr,
+ client->name);
+ if (!client->driver->command)
+ return 0;
+
+ if (btv->tuner_type != UNSET) {
+ struct tuner_setup tun_setup;
+
+ if ((addr==ADDR_UNSET) ||
+ (addr==client->addr)) {
+
+ tun_setup.mode_mask = T_ANALOG_TV | T_DIGITAL_TV | T_RADIO;
+ tun_setup.type = btv->tuner_type;
+ tun_setup.addr = addr;
+ bttv_call_i2c_clients(btv, TUNER_SET_TYPE_ADDR, &tun_setup);
+ }
+
+ }
+
+ return 0;
}
void bttv_call_i2c_clients(struct bttv *btv, unsigned int cmd, void *arg)
i2c_clients_command(&btv->c.i2c_adap, cmd, arg);
}
-void bttv_i2c_call(unsigned int card, unsigned int cmd, void *arg)
-{
- if (card >= bttv_num)
- return;
- bttv_call_i2c_clients(&bttvs[card], cmd, arg);
-}
-
static struct i2c_client bttv_i2c_client_template = {
- I2C_DEVNAME("bttv internal"),
- .id = -1,
+ .name = "bttv internal",
};
/* read I2C */
-int bttv_I2CRead(struct bttv *btv, unsigned char addr, char *probe_for)
+int bttv_I2CRead(struct bttv *btv, unsigned char addr, char *probe_for)
{
- unsigned char buffer = 0;
+ unsigned char buffer = 0;
if (0 != btv->i2c_rc)
return -1;
if (bttv_verbose && NULL != probe_for)
printk(KERN_INFO "bttv%d: i2c: checking for %s @ 0x%02x... ",
btv->c.nr,probe_for,addr);
- btv->i2c_client.addr = addr >> 1;
- if (1 != i2c_master_recv(&btv->i2c_client, &buffer, 1)) {
+ 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->c.nr,addr);
- return -1;
+ return -1;
}
if (bttv_verbose && NULL != probe_for)
printk("found\n");
- return buffer;
+ return buffer;
}
/* write I2C */
int bttv_I2CWrite(struct bttv *btv, unsigned char addr, unsigned char b1,
- unsigned char b2, int both)
+ unsigned char b2, int both)
{
- unsigned char buffer[2];
- int bytes = both ? 2 : 1;
+ unsigned char buffer[2];
+ int bytes = both ? 2 : 1;
if (0 != btv->i2c_rc)
return -1;
- btv->i2c_client.addr = addr >> 1;
- buffer[0] = b1;
- buffer[1] = b2;
- if (bytes != i2c_master_send(&btv->i2c_client, buffer, bytes))
+ 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;
+ 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");
+ memset(eedata, 0, 256);
+ if (0 != btv->i2c_rc)
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;
- }
+ tveeprom_read(&btv->i2c_client, eedata, 256);
+}
+
+static char *i2c_devs[128] = {
+ [ 0x1c >> 1 ] = "lgdt330x",
+ [ 0x30 >> 1 ] = "IR (hauppauge)",
+ [ 0x80 >> 1 ] = "msp34xx",
+ [ 0x86 >> 1 ] = "tda9887",
+ [ 0xa0 >> 1 ] = "eeprom",
+ [ 0xc0 >> 1 ] = "tuner (analog)",
+ [ 0xc2 >> 1 ] = "tuner (analog)",
+};
+
+static void do_i2c_scan(char *name, struct i2c_client *c)
+{
+ unsigned char buf;
+ int i,rc;
+
+ for (i = 0; i < 128; i++) {
+ c->addr = i;
+ rc = i2c_master_recv(c,&buf,0);
+ if (rc < 0)
+ continue;
+ printk("%s: i2c scan: found device @ 0x%x [%s]\n",
+ name, i << 1, i2c_devs[i] ? i2c_devs[i] : "???");
}
}
"bt%d #%d [%s]", btv->id, btv->c.nr,
btv->use_i2c_hw ? "hw" : "sw");
- i2c_set_adapdata(&btv->c.i2c_adap, btv);
- btv->i2c_client.adapter = &btv->c.i2c_adap;
+ i2c_set_adapdata(&btv->c.i2c_adap, btv);
+ btv->i2c_client.adapter = &btv->c.i2c_adap;
+
+ if (bttv_tvcards[btv->c.type].no_video)
+ btv->c.i2c_adap.class &= ~I2C_CLASS_TV_ANALOG;
+ if (bttv_tvcards[btv->c.type].has_dvb)
+ btv->c.i2c_adap.class |= I2C_CLASS_TV_DIGITAL;
if (btv->use_i2c_hw) {
btv->i2c_rc = i2c_add_adapter(&btv->c.i2c_adap);
bttv_bit_setsda(btv,1);
btv->i2c_rc = i2c_bit_add_bus(&btv->c.i2c_adap);
}
+ if (0 == btv->i2c_rc && i2c_scan)
+ do_i2c_scan(btv->c.name,&btv->i2c_client);
return btv->i2c_rc;
}
git://git.onelab.eu / linux-2.6.git / blobdiff