[deliverable/linux.git] / drivers / media / video / cx88 / cx88-i2c.c

/*

    cx88-i2c.c  --  all the i2c code is here

    Copyright (C) 1996,97,98 Ralph  Metzler (rjkm@thp.uni-koeln.de)
			   & Marcus Metzler (mocm@thp.uni-koeln.de)
    (c) 2002 Yurij Sysoev <yurij@naturesoft.net>
    (c) 1999-2003 Gerd Knorr <kraxel@bytesex.org>

    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.

*/

#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/init.h>

#include <asm/io.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)

/* ----------------------------------------------------------------------- */

static void cx8800_bit_setscl(void *data, int state)
{
	struct cx88_core *core = data;

	if (state)
		core->i2c_state |= 0x02;
	else
		core->i2c_state &= ~0x02;
	cx_write(MO_I2C, core->i2c_state);
	cx_read(MO_I2C);
}

static void cx8800_bit_setsda(void *data, int state)
{
	struct cx88_core *core = data;

	if (state)
		core->i2c_state |= 0x01;
	else
		core->i2c_state &= ~0x01;
	cx_write(MO_I2C, core->i2c_state);
	cx_read(MO_I2C);
}

static int cx8800_bit_getscl(void *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 cx88_core *core = data;
	u32 state;

	state = cx_read(MO_I2C);
	return state & 0x01;
}

/* ----------------------------------------------------------------------- */

static int attach_inform(struct i2c_client *client)
{
	struct tuner_setup tun_setup;
	struct cx88_core *core = i2c_get_adapdata(client->adapter);

	dprintk(1, "%s i2c attach [addr=0x%x,client=%s]\n",
		client->driver->name, client->addr, client->name);
	if (!client->driver->command)
		return 0;

	if (core->radio_type != UNSET) {
		if ((core->radio_addr==ADDR_UNSET)||(core->radio_addr==client->addr)) {
			tun_setup.mode_mask = T_RADIO;
			tun_setup.type = core->radio_type;
			tun_setup.addr = core->radio_addr;

			client->driver->command (client, TUNER_SET_TYPE_ADDR, &tun_setup);
		}
	}
	if (core->tuner_type != UNSET) {
		if ((core->tuner_addr==ADDR_UNSET)||(core->tuner_addr==client->addr)) {

			tun_setup.mode_mask = T_ANALOG_TV;
			tun_setup.type = core->tuner_type;
			tun_setup.addr = core->tuner_addr;

			client->driver->command (client,TUNER_SET_TYPE_ADDR, &tun_setup);
		}
	}

	if (core->tda9887_conf)
		client->driver->command(client, TDA9887_SET_CONFIG, &core->tda9887_conf);
	return 0;
}

static int detach_inform(struct i2c_client *client)
{
	struct cx88_core *core = i2c_get_adapdata(client->adapter);

	dprintk(1, "i2c detach [client=%s]\n", client->name);
	return 0;
}

void cx88_call_i2c_clients(struct cx88_core *core, unsigned int cmd, void *arg)
{
	if (0 != core->i2c_rc)
		return;
	i2c_clients_command(&core->i2c_adap, cmd, arg);
}

static struct i2c_algo_bit_data cx8800_i2c_algo_template = {
	.setsda  = cx8800_bit_setsda,
	.setscl  = cx8800_bit_setscl,
	.getsda  = cx8800_bit_getsda,
	.getscl  = cx8800_bit_getscl,
	.udelay  = 16,
	.mdelay  = 10,
	.timeout = 200,
};

/* ----------------------------------------------------------------------- */

static struct i2c_adapter cx8800_i2c_adap_template = {
	.name              = "cx2388x",
	.owner             = THIS_MODULE,
	.id                = I2C_HW_B_CX2388x,
	.client_register   = attach_inform,
	.client_unregister = detach_inform,
};

static struct i2c_client cx8800_i2c_client_template = {
	.name	= "cx88xx internal",
};

static char *i2c_devs[128] = {
	[ 0x1c >> 1 ] = "lgdt330x",
	[ 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 cx88_i2c_init(struct cx88_core *core, struct pci_dev *pci)
{
	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
 * End:
 */
Commit	Line	Data
1da177e4	1	/*
1da177e4 LT	2
	3	cx88-i2c.c -- all the i2c code is here
	4
	5	Copyright (C) 1996,97,98 Ralph Metzler (rjkm@thp.uni-koeln.de)
4ac97914	6	& Marcus Metzler (mocm@thp.uni-koeln.de)
1da177e4 LT	7	(c) 2002 Yurij Sysoev <yurij@naturesoft.net>
	8	(c) 1999-2003 Gerd Knorr <kraxel@bytesex.org>
	9
	10	This program is free software; you can redistribute it and/or modify
	11	it under the terms of the GNU General Public License as published by
	12	the Free Software Foundation; either version 2 of the License, or
	13	(at your option) any later version.
	14
	15	This program is distributed in the hope that it will be useful,
	16	but WITHOUT ANY WARRANTY; without even the implied warranty of
	17	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	18	GNU General Public License for more details.
	19
	20	You should have received a copy of the GNU General Public License
	21	along with this program; if not, write to the Free Software
	22	Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
	23
	24	*/
	25
	26	#include <linux/module.h>
	27	#include <linux/moduleparam.h>
	28	#include <linux/init.h>
	29
	30	#include <asm/io.h>
	31
	32	#include "cx88.h"
	33
	34	static unsigned int i2c_debug = 0;
	35	module_param(i2c_debug, int, 0644);
	36	MODULE_PARM_DESC(i2c_debug,"enable debug messages [i2c]");
	37
	38	static unsigned int i2c_scan = 0;
	39	module_param(i2c_scan, int, 0444);
	40	MODULE_PARM_DESC(i2c_scan,"scan i2c bus at insmod time");
	41
	42	#define dprintk(level,fmt, arg...) if (i2c_debug >= level) \
	43	printk(KERN_DEBUG "%s: " fmt, core->name , ## arg)
	44
	45	/* ----------------------------------------------------------------------- */
	46
408b664a	47	static void cx8800_bit_setscl(void *data, int state)
1da177e4 LT	48	{
	49	struct cx88_core *core = data;
	50
	51	if (state)
	52	core->i2c_state \|= 0x02;
	53	else
	54	core->i2c_state &= ~0x02;
	55	cx_write(MO_I2C, core->i2c_state);
	56	cx_read(MO_I2C);
	57	}
	58
408b664a	59	static void cx8800_bit_setsda(void *data, int state)
1da177e4 LT	60	{
	61	struct cx88_core *core = data;
	62
	63	if (state)
	64	core->i2c_state \|= 0x01;
	65	else
	66	core->i2c_state &= ~0x01;
	67	cx_write(MO_I2C, core->i2c_state);
	68	cx_read(MO_I2C);
	69	}
	70
	71	static int cx8800_bit_getscl(void *data)
	72	{
	73	struct cx88_core *core = data;
	74	u32 state;
	75
	76	state = cx_read(MO_I2C);
	77	return state & 0x02 ? 1 : 0;
	78	}
	79
	80	static int cx8800_bit_getsda(void *data)
	81	{
	82	struct cx88_core *core = data;
	83	u32 state;
	84
	85	state = cx_read(MO_I2C);
	86	return state & 0x01;
	87	}
	88
	89	/* ----------------------------------------------------------------------- */
	90
	91	static int attach_inform(struct i2c_client *client)
	92	{
4ac97914	93	struct tuner_setup tun_setup;
1da177e4 LT	94	struct cx88_core *core = i2c_get_adapdata(client->adapter);
1da177e4 LT	95
41ef7c1e	96	dprintk(1, "%s i2c attach [addr=0x%x,client=%s]\n",
fae91e72	97	client->driver->name, client->addr, client->name);
1da177e4 LT	98	if (!client->driver->command)
	99	return 0;
	100
4ac97914	101	if (core->radio_type != UNSET) {
41ef7c1e MCC	102	if ((core->radio_addr==ADDR_UNSET)\|\|(core->radio_addr==client->addr)) {
	103	tun_setup.mode_mask = T_RADIO;
	104	tun_setup.type = core->radio_type;
	105	tun_setup.addr = core->radio_addr;
	106
	107	client->driver->command (client, TUNER_SET_TYPE_ADDR, &tun_setup);
	108	}
4ac97914 MCC	109	}
4ac97914 MCC	110	if (core->tuner_type != UNSET) {
41ef7c1e MCC	111	if ((core->tuner_addr==ADDR_UNSET)\|\|(core->tuner_addr==client->addr)) {
	112
	113	tun_setup.mode_mask = T_ANALOG_TV;
	114	tun_setup.type = core->tuner_type;
	115	tun_setup.addr = core->tuner_addr;
	116
	117	client->driver->command (client,TUNER_SET_TYPE_ADDR, &tun_setup);
	118	}
4ac97914	119	}
b45009b0	120
1da177e4 LT	121	if (core->tda9887_conf)
	122	client->driver->command(client, TDA9887_SET_CONFIG, &core->tda9887_conf);
	123	return 0;
	124	}
	125
	126	static int detach_inform(struct i2c_client *client)
	127	{
	128	struct cx88_core *core = i2c_get_adapdata(client->adapter);
	129
fae91e72	130	dprintk(1, "i2c detach [client=%s]\n", client->name);
1da177e4 LT	131	return 0;
	132	}
	133
	134	void cx88_call_i2c_clients(struct cx88_core core, unsigned int cmd, void arg)
	135	{
	136	if (0 != core->i2c_rc)
	137	return;
	138	i2c_clients_command(&core->i2c_adap, cmd, arg);
	139	}
	140
	141	static struct i2c_algo_bit_data cx8800_i2c_algo_template = {
	142	.setsda = cx8800_bit_setsda,
	143	.setscl = cx8800_bit_setscl,
	144	.getsda = cx8800_bit_getsda,
	145	.getscl = cx8800_bit_getscl,
	146	.udelay = 16,
	147	.mdelay = 10,
	148	.timeout = 200,
	149	};
	150
	151	/* ----------------------------------------------------------------------- */
	152
	153	static struct i2c_adapter cx8800_i2c_adap_template = {
fae91e72	154	.name = "cx2388x",
1da177e4 LT	155	.owner = THIS_MODULE,
	156	.id = I2C_HW_B_CX2388x,
	157	.client_register = attach_inform,
	158	.client_unregister = detach_inform,
	159	};
	160
	161	static struct i2c_client cx8800_i2c_client_template = {
4ac97914	162	.name = "cx88xx internal",
1da177e4 LT	163	};
	164
	165	static char *i2c_devs[128] = {
6ddcc919	166	[ 0x1c >> 1 ] = "lgdt330x",
1da177e4 LT	167	[ 0x86 >> 1 ] = "tda9887/cx22702",
	168	[ 0xa0 >> 1 ] = "eeprom",
	169	[ 0xc0 >> 1 ] = "tuner (analog)",
	170	[ 0xc2 >> 1 ] = "tuner (analog/dvb)",
	171	};
	172
	173	static void do_i2c_scan(char name, struct i2c_client c)
	174	{
	175	unsigned char buf;
	176	int i,rc;
	177
	178	for (i = 0; i < 128; i++) {
	179	c->addr = i;
	180	rc = i2c_master_recv(c,&buf,0);
	181	if (rc < 0)
	182	continue;
	183	printk("%s: i2c scan: found device @ 0x%x [%s]\n",
	184	name, i << 1, i2c_devs[i] ? i2c_devs[i] : "???");
	185	}
	186	}
	187
	188	/* init + register i2c algo-bit adapter */
	189	int cx88_i2c_init(struct cx88_core core, struct pci_dev pci)
	190	{
	191	memcpy(&core->i2c_adap, &cx8800_i2c_adap_template,
	192	sizeof(core->i2c_adap));
	193	memcpy(&core->i2c_algo, &cx8800_i2c_algo_template,
	194	sizeof(core->i2c_algo));
	195	memcpy(&core->i2c_client, &cx8800_i2c_client_template,
	196	sizeof(core->i2c_client));
	197
	198	if (core->tuner_type != TUNER_ABSENT)
	199	core->i2c_adap.class \|= I2C_CLASS_TV_ANALOG;
	200	if (cx88_boards[core->board].dvb)
	201	core->i2c_adap.class \|= I2C_CLASS_TV_DIGITAL;
	202
	203	core->i2c_adap.dev.parent = &pci->dev;
	204	strlcpy(core->i2c_adap.name,core->name,sizeof(core->i2c_adap.name));
4ac97914 MCC	205	core->i2c_algo.data = core;
	206	i2c_set_adapdata(&core->i2c_adap,core);
	207	core->i2c_adap.algo_data = &core->i2c_algo;
	208	core->i2c_client.adapter = &core->i2c_adap;
1da177e4 LT	209
	210	cx8800_bit_setscl(core,1);
	211	cx8800_bit_setsda(core,1);
	212
	213	core->i2c_rc = i2c_bit_add_bus(&core->i2c_adap);
	214	if (0 == core->i2c_rc) {
	215	dprintk(1, "i2c register ok\n");
	216	if (i2c_scan)
	217	do_i2c_scan(core->name,&core->i2c_client);
	218	} else
	219	printk("%s: i2c register FAILED\n", core->name);
	220	return core->i2c_rc;
	221	}
	222
	223	/* ----------------------------------------------------------------------- */
	224
	225	EXPORT_SYMBOL(cx88_call_i2c_clients);
	226	EXPORT_SYMBOL(cx88_i2c_init);
	227
	228	/*
	229	* Local variables:
	230	* c-basic-offset: 8
	231	* End:
	232	*/