/*
+ $Id: cx88-i2c.c,v 1.18 2004/10/13 10:39:00 kraxel Exp $
+
cx88-i2c.c -- all the i2c code is here
Copyright (C) 1996,97,98 Ralph Metzler (rjkm@thp.uni-koeln.de)
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 "cx88.h"
+static unsigned int i2c_debug = 0;
+module_param(i2c_debug, int, 0644);
+MODULE_PARM_DESC(i2c_debug,"enable debug messages [i2c]");
+
+static unsigned int i2c_scan = 0;
+module_param(i2c_scan, int, 0444);
+MODULE_PARM_DESC(i2c_scan,"scan i2c bus at insmod time");
+
+#define dprintk(level,fmt, arg...) if (i2c_debug >= level) \
+ printk(KERN_DEBUG "%s: " fmt, core->name , ## arg)
+
/* ----------------------------------------------------------------------- */
void cx8800_bit_setscl(void *data, int state)
{
- struct cx8800_dev *dev = data;
+ struct cx88_core *core = data;
if (state)
- dev->i2c_state |= 0x02;
+ core->i2c_state |= 0x02;
else
- dev->i2c_state &= ~0x02;
- cx_write(MO_I2C, dev->i2c_state);
+ core->i2c_state &= ~0x02;
+ cx_write(MO_I2C, core->i2c_state);
cx_read(MO_I2C);
}
void cx8800_bit_setsda(void *data, int state)
{
- struct cx8800_dev *dev = data;
+ struct cx88_core *core = data;
if (state)
- dev->i2c_state |= 0x01;
+ core->i2c_state |= 0x01;
else
- dev->i2c_state &= ~0x01;
- cx_write(MO_I2C, dev->i2c_state);
+ core->i2c_state &= ~0x01;
+ cx_write(MO_I2C, core->i2c_state);
cx_read(MO_I2C);
}
static int cx8800_bit_getscl(void *data)
{
- struct cx8800_dev *dev = data;
+ struct cx88_core *core = data;
u32 state;
-
+
state = cx_read(MO_I2C);
return state & 0x02 ? 1 : 0;
}
static int cx8800_bit_getsda(void *data)
{
- struct cx8800_dev *dev = data;
+ struct cx88_core *core = data;
u32 state;
state = cx_read(MO_I2C);
/* ----------------------------------------------------------------------- */
-#ifndef I2C_PEC
-static void cx8800_inc_use(struct i2c_adapter *adap)
-{
- MOD_INC_USE_COUNT;
-}
-
-static void cx8800_dec_use(struct i2c_adapter *adap)
+static int attach_inform(struct i2c_client *client)
{
- MOD_DEC_USE_COUNT;
+ struct cx88_core *core = i2c_get_adapdata(client->adapter);
+
+ dprintk(1, "i2c attach [addr=0x%x,client=%s]\n",
+ client->addr, i2c_clientname(client));
+ if (!client->driver->command)
+ return 0;
+
+ if (core->tuner_type != UNSET)
+ client->driver->command(client, TUNER_SET_TYPE, &core->tuner_type);
+ if (core->tda9887_conf)
+ client->driver->command(client, TDA9887_SET_CONFIG, &core->tda9887_conf);
+ return 0;
}
-#endif
-static int attach_inform(struct i2c_client *client)
+static int detach_inform(struct i2c_client *client)
{
- struct cx8800_dev *dev = i2c_get_adapdata(client->adapter);
+ struct cx88_core *core = i2c_get_adapdata(client->adapter);
- if (dev->tuner_type != UNSET)
- cx8800_call_i2c_clients(dev,TUNER_SET_TYPE,&dev->tuner_type);
-
- if (1 /* fixme: debug */)
- printk("%s: i2c attach [client=%s]\n",
- dev->name, i2c_clientname(client));
- return 0;
+ dprintk(1, "i2c detach [client=%s]\n", i2c_clientname(client));
+ return 0;
}
-void cx8800_call_i2c_clients(struct cx8800_dev *dev, unsigned int cmd, void *arg)
+void cx88_call_i2c_clients(struct cx88_core *core, unsigned int cmd, void *arg)
{
- if (0 != dev->i2c_rc)
+ if (0 != core->i2c_rc)
return;
- i2c_clients_command(&dev->i2c_adap, cmd, arg);
+ i2c_clients_command(&core->i2c_adap, cmd, arg);
}
static struct i2c_algo_bit_data cx8800_i2c_algo_template = {
/* ----------------------------------------------------------------------- */
static struct i2c_adapter cx8800_i2c_adap_template = {
-#ifdef I2C_PEC
- .owner = THIS_MODULE,
-#else
- .inc_use = cx8800_inc_use,
- .dec_use = cx8800_dec_use,
-#endif
-#ifdef I2C_CLASS_TV_ANALOG
- .class = I2C_CLASS_TV_ANALOG,
-#endif
I2C_DEVNAME("cx2388x"),
- .id = I2C_HW_B_BT848,
+ .owner = THIS_MODULE,
+ .id = I2C_HW_B_CX2388x,
.client_register = attach_inform,
+ .client_unregister = detach_inform,
};
static struct i2c_client cx8800_i2c_client_template = {
.id = -1,
};
+static char *i2c_devs[128] = {
+ [ 0x86 >> 1 ] = "tda9887/cx22702",
+ [ 0xa0 >> 1 ] = "eeprom",
+ [ 0xc0 >> 1 ] = "tuner (analog)",
+ [ 0xc2 >> 1 ] = "tuner (analog/dvb)",
+};
+
+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] : "???");
+ }
+}
+
/* init + register i2c algo-bit adapter */
-int __devinit cx8800_i2c_init(struct cx8800_dev *dev)
+int cx88_i2c_init(struct cx88_core *core, struct pci_dev *pci)
{
- memcpy(&dev->i2c_adap, &cx8800_i2c_adap_template,
- sizeof(dev->i2c_adap));
- memcpy(&dev->i2c_algo, &cx8800_i2c_algo_template,
- sizeof(dev->i2c_algo));
- memcpy(&dev->i2c_client, &cx8800_i2c_client_template,
- sizeof(dev->i2c_client));
-
- dev->i2c_adap.dev.parent = &dev->pci->dev;
- strlcpy(dev->i2c_adap.name,dev->name,sizeof(dev->i2c_adap.name));
- dev->i2c_algo.data = dev;
- i2c_set_adapdata(&dev->i2c_adap,dev);
- dev->i2c_adap.algo_data = &dev->i2c_algo;
- dev->i2c_client.adapter = &dev->i2c_adap;
-
- cx8800_bit_setscl(dev,1);
- cx8800_bit_setsda(dev,1);
-
- dev->i2c_rc = i2c_bit_add_bus(&dev->i2c_adap);
- printk("%s: i2c register %s\n", dev->name,
- (0 == dev->i2c_rc) ? "ok" : "FAILED");
- return dev->i2c_rc;
+ memcpy(&core->i2c_adap, &cx8800_i2c_adap_template,
+ sizeof(core->i2c_adap));
+ memcpy(&core->i2c_algo, &cx8800_i2c_algo_template,
+ sizeof(core->i2c_algo));
+ memcpy(&core->i2c_client, &cx8800_i2c_client_template,
+ sizeof(core->i2c_client));
+
+ if (core->tuner_type != TUNER_ABSENT)
+ core->i2c_adap.class |= I2C_CLASS_TV_ANALOG;
+ if (cx88_boards[core->board].dvb)
+ core->i2c_adap.class |= I2C_CLASS_TV_DIGITAL;
+
+ core->i2c_adap.dev.parent = &pci->dev;
+ strlcpy(core->i2c_adap.name,core->name,sizeof(core->i2c_adap.name));
+ core->i2c_algo.data = core;
+ i2c_set_adapdata(&core->i2c_adap,core);
+ core->i2c_adap.algo_data = &core->i2c_algo;
+ core->i2c_client.adapter = &core->i2c_adap;
+
+ cx8800_bit_setscl(core,1);
+ cx8800_bit_setsda(core,1);
+
+ core->i2c_rc = i2c_bit_add_bus(&core->i2c_adap);
+ if (0 == core->i2c_rc) {
+ dprintk(1, "i2c register ok\n");
+ if (i2c_scan)
+ do_i2c_scan(core->name,&core->i2c_client);
+ } else
+ printk("%s: i2c register FAILED\n", core->name);
+ return core->i2c_rc;
}
+/* ----------------------------------------------------------------------- */
+
+EXPORT_SYMBOL(cx88_call_i2c_clients);
+EXPORT_SYMBOL(cx88_i2c_init);
+
/*
* Local variables:
* c-basic-offset: 8
git://git.onelab.eu / linux-2.6.git / blobdiff