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

/*
    $Id: cx88-i2c.c,v 1.30 2005/07/25 05:10:13 mkrufky Exp $

    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,i2c_clientname(client));
	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", i2c_clientname(client));
	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 = {
	I2C_DEVNAME("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 = {
        I2C_DEVNAME("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	/*
6ddcc919	2	$Id: cx88-i2c.c,v 1.30 2005/07/25 05:10:13 mkrufky Exp $
1da177e4 LT	3
	4	cx88-i2c.c -- all the i2c code is here
	5
	6	Copyright (C) 1996,97,98 Ralph Metzler (rjkm@thp.uni-koeln.de)
	7	& Marcus Metzler (mocm@thp.uni-koeln.de)
	8	(c) 2002 Yurij Sysoev <yurij@naturesoft.net>
	9	(c) 1999-2003 Gerd Knorr <kraxel@bytesex.org>
	10
	11	This program is free software; you can redistribute it and/or modify
	12	it under the terms of the GNU General Public License as published by
	13	the Free Software Foundation; either version 2 of the License, or
	14	(at your option) any later version.
	15
	16	This program is distributed in the hope that it will be useful,
	17	but WITHOUT ANY WARRANTY; without even the implied warranty of
	18	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	19	GNU General Public License for more details.
	20
	21	You should have received a copy of the GNU General Public License
	22	along with this program; if not, write to the Free Software
	23	Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
	24
	25	*/
	26
	27	#include <linux/module.h>
	28	#include <linux/moduleparam.h>
	29	#include <linux/init.h>
	30
	31	#include <asm/io.h>
	32
	33	#include "cx88.h"
	34
	35	static unsigned int i2c_debug = 0;
	36	module_param(i2c_debug, int, 0644);
	37	MODULE_PARM_DESC(i2c_debug,"enable debug messages [i2c]");
	38
	39	static unsigned int i2c_scan = 0;
	40	module_param(i2c_scan, int, 0444);
	41	MODULE_PARM_DESC(i2c_scan,"scan i2c bus at insmod time");
	42
	43	#define dprintk(level,fmt, arg...) if (i2c_debug >= level) \
	44	printk(KERN_DEBUG "%s: " fmt, core->name , ## arg)
	45
	46	/* ----------------------------------------------------------------------- */
	47
408b664a	48	static void cx8800_bit_setscl(void *data, int state)
1da177e4 LT	49	{
	50	struct cx88_core *core = data;
	51
	52	if (state)
	53	core->i2c_state \|= 0x02;
	54	else
	55	core->i2c_state &= ~0x02;
	56	cx_write(MO_I2C, core->i2c_state);
	57	cx_read(MO_I2C);
	58	}
	59
408b664a	60	static void cx8800_bit_setsda(void *data, int state)
1da177e4 LT	61	{
	62	struct cx88_core *core = data;
	63
	64	if (state)
	65	core->i2c_state \|= 0x01;
	66	else
	67	core->i2c_state &= ~0x01;
	68	cx_write(MO_I2C, core->i2c_state);
	69	cx_read(MO_I2C);
	70	}
	71
	72	static int cx8800_bit_getscl(void *data)
	73	{
	74	struct cx88_core *core = data;
	75	u32 state;
	76
	77	state = cx_read(MO_I2C);
	78	return state & 0x02 ? 1 : 0;
	79	}
	80
	81	static int cx8800_bit_getsda(void *data)
	82	{
	83	struct cx88_core *core = data;
	84	u32 state;
	85
	86	state = cx_read(MO_I2C);
	87	return state & 0x01;
	88	}
	89
	90	/* ----------------------------------------------------------------------- */
	91
	92	static int attach_inform(struct i2c_client *client)
	93	{
41ef7c1e	94	struct tuner_setup tun_setup;
1da177e4 LT	95	struct cx88_core *core = i2c_get_adapdata(client->adapter);
1da177e4 LT	96
41ef7c1e MCC	97	dprintk(1, "%s i2c attach [addr=0x%x,client=%s]\n",
41ef7c1e MCC	98	client->driver->name,client->addr,i2c_clientname(client));
1da177e4 LT	99	if (!client->driver->command)
	100	return 0;
	101
b45009b0	102	if (core->radio_type != UNSET) {
41ef7c1e MCC	103	if ((core->radio_addr==ADDR_UNSET)\|\|(core->radio_addr==client->addr)) {
	104	tun_setup.mode_mask = T_RADIO;
	105	tun_setup.type = core->radio_type;
	106	tun_setup.addr = core->radio_addr;
	107
	108	client->driver->command (client, TUNER_SET_TYPE_ADDR, &tun_setup);
	109	}
b45009b0 MCC	110	}
b45009b0 MCC	111	if (core->tuner_type != UNSET) {
41ef7c1e MCC	112	if ((core->tuner_addr==ADDR_UNSET)\|\|(core->tuner_addr==client->addr)) {
	113
	114	tun_setup.mode_mask = T_ANALOG_TV;
	115	tun_setup.type = core->tuner_type;
	116	tun_setup.addr = core->tuner_addr;
	117
	118	client->driver->command (client,TUNER_SET_TYPE_ADDR, &tun_setup);
	119	}
b45009b0 MCC	120	}
b45009b0 MCC	121
1da177e4 LT	122	if (core->tda9887_conf)
	123	client->driver->command(client, TDA9887_SET_CONFIG, &core->tda9887_conf);
	124	return 0;
	125	}
	126
	127	static int detach_inform(struct i2c_client *client)
	128	{
	129	struct cx88_core *core = i2c_get_adapdata(client->adapter);
	130
	131	dprintk(1, "i2c detach [client=%s]\n", i2c_clientname(client));
	132	return 0;
	133	}
	134
	135	void cx88_call_i2c_clients(struct cx88_core core, unsigned int cmd, void arg)
	136	{
	137	if (0 != core->i2c_rc)
	138	return;
	139	i2c_clients_command(&core->i2c_adap, cmd, arg);
	140	}
	141
	142	static struct i2c_algo_bit_data cx8800_i2c_algo_template = {
	143	.setsda = cx8800_bit_setsda,
	144	.setscl = cx8800_bit_setscl,
	145	.getsda = cx8800_bit_getsda,
	146	.getscl = cx8800_bit_getscl,
	147	.udelay = 16,
	148	.mdelay = 10,
	149	.timeout = 200,
	150	};
	151
	152	/* ----------------------------------------------------------------------- */
	153
	154	static struct i2c_adapter cx8800_i2c_adap_template = {
	155	I2C_DEVNAME("cx2388x"),
	156	.owner = THIS_MODULE,
	157	.id = I2C_HW_B_CX2388x,
	158	.client_register = attach_inform,
	159	.client_unregister = detach_inform,
	160	};
	161
	162	static struct i2c_client cx8800_i2c_client_template = {
	163	I2C_DEVNAME("cx88xx internal"),
	164	};
	165
	166	static char *i2c_devs[128] = {
6ddcc919	167	[ 0x1c >> 1 ] = "lgdt330x",
1da177e4 LT	168	[ 0x86 >> 1 ] = "tda9887/cx22702",
	169	[ 0xa0 >> 1 ] = "eeprom",
	170	[ 0xc0 >> 1 ] = "tuner (analog)",
	171	[ 0xc2 >> 1 ] = "tuner (analog/dvb)",
	172	};
	173
	174	static void do_i2c_scan(char name, struct i2c_client c)
	175	{
	176	unsigned char buf;
	177	int i,rc;
	178
	179	for (i = 0; i < 128; i++) {
	180	c->addr = i;
	181	rc = i2c_master_recv(c,&buf,0);
	182	if (rc < 0)
	183	continue;
	184	printk("%s: i2c scan: found device @ 0x%x [%s]\n",
	185	name, i << 1, i2c_devs[i] ? i2c_devs[i] : "???");
	186	}
	187	}
	188
	189	/* init + register i2c algo-bit adapter */
	190	int cx88_i2c_init(struct cx88_core core, struct pci_dev pci)
	191	{
	192	memcpy(&core->i2c_adap, &cx8800_i2c_adap_template,
	193	sizeof(core->i2c_adap));
	194	memcpy(&core->i2c_algo, &cx8800_i2c_algo_template,
	195	sizeof(core->i2c_algo));
	196	memcpy(&core->i2c_client, &cx8800_i2c_client_template,
	197	sizeof(core->i2c_client));
	198
	199	if (core->tuner_type != TUNER_ABSENT)
	200	core->i2c_adap.class \|= I2C_CLASS_TV_ANALOG;
	201	if (cx88_boards[core->board].dvb)
	202	core->i2c_adap.class \|= I2C_CLASS_TV_DIGITAL;
	203
	204	core->i2c_adap.dev.parent = &pci->dev;
	205	strlcpy(core->i2c_adap.name,core->name,sizeof(core->i2c_adap.name));
	206	core->i2c_algo.data = core;
	207	i2c_set_adapdata(&core->i2c_adap,core);
	208	core->i2c_adap.algo_data = &core->i2c_algo;
	209	core->i2c_client.adapter = &core->i2c_adap;
	210
	211	cx8800_bit_setscl(core,1);
	212	cx8800_bit_setsda(core,1);
	213
	214	core->i2c_rc = i2c_bit_add_bus(&core->i2c_adap);
	215	if (0 == core->i2c_rc) {
	216	dprintk(1, "i2c register ok\n");
	217	if (i2c_scan)
	218	do_i2c_scan(core->name,&core->i2c_client);
	219	} else
	220	printk("%s: i2c register FAILED\n", core->name);
	221	return core->i2c_rc;
	222	}
	223
	224	/* ----------------------------------------------------------------------- */
	225
	226	EXPORT_SYMBOL(cx88_call_i2c_clients);
	227	EXPORT_SYMBOL(cx88_i2c_init);
	228
	229	/*
	230	* Local variables:
	231	* c-basic-offset: 8
232	* End:
233	*/