[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>

    (c) 2005 Mauro Carvalho Chehab <mchehab@infradead.org>
	- Multituner support and i2c address binding

    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"
#include <media/v4l2-common.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->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;

	if (core->dvbdev) {
		if (core->dvbdev->dvb.frontend->ops.i2c_gate_ctrl)
			core->dvbdev->dvb.frontend->ops.i2c_gate_ctrl(core->dvbdev->dvb.frontend, 1);

		i2c_clients_command(&core->i2c_adap, cmd, arg);

		if (core->dvbdev->dvb.frontend->ops.i2c_gate_ctrl)
			core->dvbdev->dvb.frontend->ops.i2c_gate_ctrl(core->dvbdev->dvb.frontend, 0);
	} else
		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);

/*
 * 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
3153d0d0 MCC	10	(c) 2005 Mauro Carvalho Chehab <mchehab@infradead.org>
	11	- Multituner support and i2c address binding
	12
1da177e4 LT	13	This program is free software; you can redistribute it and/or modify
	14	it under the terms of the GNU General Public License as published by
	15	the Free Software Foundation; either version 2 of the License, or
	16	(at your option) any later version.
	17
	18	This program is distributed in the hope that it will be useful,
	19	but WITHOUT ANY WARRANTY; without even the implied warranty of
	20	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	21	GNU General Public License for more details.
	22
	23	You should have received a copy of the GNU General Public License
	24	along with this program; if not, write to the Free Software
	25	Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
	26
	27	*/
	28
	29	#include <linux/module.h>
	30	#include <linux/moduleparam.h>
	31	#include <linux/init.h>
	32
	33	#include <asm/io.h>
	34
	35	#include "cx88.h"
5e453dc7	36	#include <media/v4l2-common.h>
1da177e4 LT	37
	38	static unsigned int i2c_debug = 0;
	39	module_param(i2c_debug, int, 0644);
	40	MODULE_PARM_DESC(i2c_debug,"enable debug messages [i2c]");
	41
	42	static unsigned int i2c_scan = 0;
	43	module_param(i2c_scan, int, 0444);
	44	MODULE_PARM_DESC(i2c_scan,"scan i2c bus at insmod time");
	45
	46	#define dprintk(level,fmt, arg...) if (i2c_debug >= level) \
	47	printk(KERN_DEBUG "%s: " fmt, core->name , ## arg)
	48
	49	/* ----------------------------------------------------------------------- */
	50
408b664a	51	static void cx8800_bit_setscl(void *data, int state)
1da177e4 LT	52	{
	53	struct cx88_core *core = data;
	54
	55	if (state)
	56	core->i2c_state \|= 0x02;
	57	else
	58	core->i2c_state &= ~0x02;
	59	cx_write(MO_I2C, core->i2c_state);
	60	cx_read(MO_I2C);
	61	}
	62
408b664a	63	static void cx8800_bit_setsda(void *data, int state)
1da177e4 LT	64	{
	65	struct cx88_core *core = data;
	66
	67	if (state)
	68	core->i2c_state \|= 0x01;
	69	else
	70	core->i2c_state &= ~0x01;
	71	cx_write(MO_I2C, core->i2c_state);
	72	cx_read(MO_I2C);
	73	}
	74
	75	static int cx8800_bit_getscl(void *data)
	76	{
	77	struct cx88_core *core = data;
	78	u32 state;
	79
	80	state = cx_read(MO_I2C);
	81	return state & 0x02 ? 1 : 0;
	82	}
	83
	84	static int cx8800_bit_getsda(void *data)
	85	{
	86	struct cx88_core *core = data;
	87	u32 state;
	88
	89	state = cx_read(MO_I2C);
	90	return state & 0x01;
	91	}
	92
	93	/* ----------------------------------------------------------------------- */
	94
	95	static int attach_inform(struct i2c_client *client)
	96	{
4ac97914	97	struct tuner_setup tun_setup;
1da177e4 LT	98	struct cx88_core *core = i2c_get_adapdata(client->adapter);
1da177e4 LT	99
41ef7c1e	100	dprintk(1, "%s i2c attach [addr=0x%x,client=%s]\n",
604f28e2	101	client->driver->driver.name, client->addr, client->name);
1da177e4 LT	102	if (!client->driver->command)
	103	return 0;
	104
4ac97914	105	if (core->radio_type != UNSET) {
41ef7c1e MCC	106	if ((core->radio_addr==ADDR_UNSET)\|\|(core->radio_addr==client->addr)) {
	107	tun_setup.mode_mask = T_RADIO;
	108	tun_setup.type = core->radio_type;
	109	tun_setup.addr = core->radio_addr;
	110
	111	client->driver->command (client, TUNER_SET_TYPE_ADDR, &tun_setup);
	112	}
4ac97914 MCC	113	}
4ac97914 MCC	114	if (core->tuner_type != UNSET) {
41ef7c1e MCC	115	if ((core->tuner_addr==ADDR_UNSET)\|\|(core->tuner_addr==client->addr)) {
	116
	117	tun_setup.mode_mask = T_ANALOG_TV;
	118	tun_setup.type = core->tuner_type;
	119	tun_setup.addr = core->tuner_addr;
	120
	121	client->driver->command (client,TUNER_SET_TYPE_ADDR, &tun_setup);
	122	}
4ac97914	123	}
b45009b0	124
1da177e4 LT	125	if (core->tda9887_conf)
	126	client->driver->command(client, TDA9887_SET_CONFIG, &core->tda9887_conf);
	127	return 0;
	128	}
	129
	130	static int detach_inform(struct i2c_client *client)
	131	{
	132	struct cx88_core *core = i2c_get_adapdata(client->adapter);
	133
fae91e72	134	dprintk(1, "i2c detach [client=%s]\n", client->name);
1da177e4 LT	135	return 0;
	136	}
	137
	138	void cx88_call_i2c_clients(struct cx88_core core, unsigned int cmd, void arg)
	139	{
	140	if (0 != core->i2c_rc)
	141	return;
611900c1	142
bcb17c42	143	if (core->dvbdev) {
dea74869 PB	144	if (core->dvbdev->dvb.frontend->ops.i2c_gate_ctrl)
dea74869 PB	145	core->dvbdev->dvb.frontend->ops.i2c_gate_ctrl(core->dvbdev->dvb.frontend, 1);
611900c1 ST	146
	147	i2c_clients_command(&core->i2c_adap, cmd, arg);
	148
dea74869 PB	149	if (core->dvbdev->dvb.frontend->ops.i2c_gate_ctrl)
dea74869 PB	150	core->dvbdev->dvb.frontend->ops.i2c_gate_ctrl(core->dvbdev->dvb.frontend, 0);
bcb17c42 MK	151	} else
bcb17c42 MK	152	i2c_clients_command(&core->i2c_adap, cmd, arg);
1da177e4 LT	153	}
	154
	155	static struct i2c_algo_bit_data cx8800_i2c_algo_template = {
	156	.setsda = cx8800_bit_setsda,
	157	.setscl = cx8800_bit_setscl,
	158	.getsda = cx8800_bit_getsda,
	159	.getscl = cx8800_bit_getscl,
	160	.udelay = 16,
	161	.mdelay = 10,
	162	.timeout = 200,
	163	};
	164
	165	/* ----------------------------------------------------------------------- */
	166
	167	static struct i2c_adapter cx8800_i2c_adap_template = {
fae91e72	168	.name = "cx2388x",
1da177e4 LT	169	.owner = THIS_MODULE,
	170	.id = I2C_HW_B_CX2388x,
	171	.client_register = attach_inform,
	172	.client_unregister = detach_inform,
	173	};
	174
	175	static struct i2c_client cx8800_i2c_client_template = {
4ac97914	176	.name = "cx88xx internal",
1da177e4 LT	177	};
	178
	179	static char *i2c_devs[128] = {
6ddcc919	180	[ 0x1c >> 1 ] = "lgdt330x",
1da177e4 LT	181	[ 0x86 >> 1 ] = "tda9887/cx22702",
	182	[ 0xa0 >> 1 ] = "eeprom",
	183	[ 0xc0 >> 1 ] = "tuner (analog)",
	184	[ 0xc2 >> 1 ] = "tuner (analog/dvb)",
	185	};
	186
	187	static void do_i2c_scan(char name, struct i2c_client c)
	188	{
	189	unsigned char buf;
	190	int i,rc;
	191
	192	for (i = 0; i < 128; i++) {
	193	c->addr = i;
	194	rc = i2c_master_recv(c,&buf,0);
	195	if (rc < 0)
	196	continue;
	197	printk("%s: i2c scan: found device @ 0x%x [%s]\n",
	198	name, i << 1, i2c_devs[i] ? i2c_devs[i] : "???");
	199	}
	200	}
	201
	202	/* init + register i2c algo-bit adapter */
	203	int cx88_i2c_init(struct cx88_core core, struct pci_dev pci)
	204	{
	205	memcpy(&core->i2c_adap, &cx8800_i2c_adap_template,
	206	sizeof(core->i2c_adap));
	207	memcpy(&core->i2c_algo, &cx8800_i2c_algo_template,
	208	sizeof(core->i2c_algo));
	209	memcpy(&core->i2c_client, &cx8800_i2c_client_template,
	210	sizeof(core->i2c_client));
	211
	212	if (core->tuner_type != TUNER_ABSENT)
	213	core->i2c_adap.class \|= I2C_CLASS_TV_ANALOG;
	214	if (cx88_boards[core->board].dvb)
	215	core->i2c_adap.class \|= I2C_CLASS_TV_DIGITAL;
	216
	217	core->i2c_adap.dev.parent = &pci->dev;
	218	strlcpy(core->i2c_adap.name,core->name,sizeof(core->i2c_adap.name));
4ac97914 MCC	219	core->i2c_algo.data = core;
	220	i2c_set_adapdata(&core->i2c_adap,core);
	221	core->i2c_adap.algo_data = &core->i2c_algo;
	222	core->i2c_client.adapter = &core->i2c_adap;
1da177e4 LT	223
	224	cx8800_bit_setscl(core,1);
	225	cx8800_bit_setsda(core,1);
	226
	227	core->i2c_rc = i2c_bit_add_bus(&core->i2c_adap);
	228	if (0 == core->i2c_rc) {
	229	dprintk(1, "i2c register ok\n");
	230	if (i2c_scan)
	231	do_i2c_scan(core->name,&core->i2c_client);
	232	} else
	233	printk("%s: i2c register FAILED\n", core->name);
	234	return core->i2c_rc;
	235	}
	236
	237	/* ----------------------------------------------------------------------- */
	238
	239	EXPORT_SYMBOL(cx88_call_i2c_clients);
1da177e4 LT	240
	241	/*
	242	* Local variables:
	243	* c-basic-offset: 8
	244	* End:
	245	*/