[net-next-2.6.git] / drivers / media / video / cs53l32a.c

/*
 * cs53l32a (Adaptec AVC-2010 and AVC-2410) i2c ivtv driver.
 * Copyright (C) 2005  Martin Vaughan
 *
 * Audio source switching for Adaptec AVC-2410 added by Trev Jackson
 *
 * 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/types.h>
#include <linux/ioctl.h>
#include <asm/uaccess.h>
#include <linux/i2c.h>
#include <linux/videodev.h>
#include <media/audiochip.h>
#include <media/id.h>

MODULE_DESCRIPTION("i2c device driver for cs53l32a Audio ADC");
MODULE_AUTHOR("Martin Vaughan");
MODULE_LICENSE("GPL");

static int debug = 0;

module_param(debug, bool, 0644);

MODULE_PARM_DESC(debug, "Debugging messages\n\t\t\t0=Off (default), 1=On");

#define cs53l32a_dbg(fmt, arg...) \
	do { \
		if (debug) \
			printk(KERN_INFO "%s debug %d-%04x: " fmt, client->driver->name, \
			       i2c_adapter_id(client->adapter), client->addr , ## arg); \
	} while (0)

#define cs53l32a_err(fmt, arg...) do { \
	printk(KERN_ERR "%s %d-%04x: " fmt, client->driver->name, \
		i2c_adapter_id(client->adapter), client->addr , ## arg); } while (0)
#define cs53l32a_info(fmt, arg...) do { \
	printk(KERN_INFO "%s %d-%04x: " fmt, client->driver->name, \
		i2c_adapter_id(client->adapter), client->addr , ## arg); } while (0)

static unsigned short normal_i2c[] = { 0x22 >> 1, I2C_CLIENT_END };


I2C_CLIENT_INSMOD;

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

static int cs53l32a_write(struct i2c_client *client, u8 reg, u8 value)
{
	return i2c_smbus_write_byte_data(client, reg, value);
}

static int cs53l32a_read(struct i2c_client *client, u8 reg)
{
	return i2c_smbus_read_byte_data(client, reg);
}

static int cs53l32a_command(struct i2c_client *client, unsigned int cmd,
			    void *arg)
{
	int *input = arg;

	switch (cmd) {
	case AUDC_SET_INPUT:
		switch (*input) {
		case AUDIO_TUNER:
			cs53l32a_write(client, 0x01, 0x01);
			break;
		case AUDIO_EXTERN:
			cs53l32a_write(client, 0x01, 0x21);
			break;
		case AUDIO_MUTE:
			cs53l32a_write(client, 0x03, 0xF0);
			break;
		case AUDIO_UNMUTE:
			cs53l32a_write(client, 0x03, 0x30);
			break;
		default:
			cs53l32a_err("Invalid input %d.\n", *input);
			return -EINVAL;
		}
		break;

	case VIDIOC_S_CTRL:
		{
			struct v4l2_control *ctrl = arg;

			if (ctrl->id != V4L2_CID_AUDIO_VOLUME)
				return -EINVAL;
			if (ctrl->value > 12 || ctrl->value < -90)
				return -EINVAL;
			cs53l32a_write(client, 0x04, (u8) ctrl->value);
			cs53l32a_write(client, 0x05, (u8) ctrl->value);
			break;
		}

	case VIDIOC_LOG_STATUS:
		{
			u8 v = cs53l32a_read(client, 0x01);
			u8 m = cs53l32a_read(client, 0x03);

			cs53l32a_info("Input: %s%s\n",
				      v == 0x21 ? "external line in" : "tuner",
				      (m & 0xC0) ? " (muted)" : "");
			break;
		}

	default:
		return -EINVAL;
	}
	return 0;
}

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

/* i2c implementation */

/*
 * Generic i2c probe
 * concerning the addresses: i2c wants 7 bit (without the r/w bit), so '>>1'
 */

static struct i2c_driver i2c_driver;

static int cs53l32a_attach(struct i2c_adapter *adapter, int address, int kind)
{
	struct i2c_client *client;
	int i;

	/* Check if the adapter supports the needed features */
	if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
		return 0;

	client = kmalloc(sizeof(struct i2c_client), GFP_KERNEL);
	if (client == 0)
		return -ENOMEM;

	memset(client, 0, sizeof(struct i2c_client));
	client->addr = address;
	client->adapter = adapter;
	client->driver = &i2c_driver;
	client->flags = I2C_CLIENT_ALLOW_USE;
	snprintf(client->name, sizeof(client->name) - 1, "cs53l32a");

	cs53l32a_info("chip found @ 0x%x (%s)\n", address << 1, adapter->name);

	for (i = 1; i <= 7; i++) {
		u8 v = cs53l32a_read(client, i);

		cs53l32a_dbg("Read Reg %d %02x\n", i, v);
	}

	/* Set cs53l32a internal register for Adaptec 2010/2410 setup */

	cs53l32a_write(client, 0x01, (u8) 0x21);
	cs53l32a_write(client, 0x02, (u8) 0x29);
	cs53l32a_write(client, 0x03, (u8) 0x30);
	cs53l32a_write(client, 0x04, (u8) 0x00);
	cs53l32a_write(client, 0x05, (u8) 0x00);
	cs53l32a_write(client, 0x06, (u8) 0x00);
	cs53l32a_write(client, 0x07, (u8) 0x00);

	/* Display results, should be 0x21,0x29,0x30,0x00,0x00,0x00,0x00 */

	for (i = 1; i <= 7; i++) {
		u8 v = cs53l32a_read(client, i);

		cs53l32a_dbg("Read Reg %d %02x\n", i, v);
	}

	i2c_attach_client(client);

	return 0;
}

static int cs53l32a_probe(struct i2c_adapter *adapter)
{
	return i2c_probe(adapter, &addr_data, cs53l32a_attach);
}

static int cs53l32a_detach(struct i2c_client *client)
{
	int err;

	err = i2c_detach_client(client);
	if (err) {
		return err;
	}
	kfree(client);

	return 0;
}

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

/* i2c implementation */
static struct i2c_driver i2c_driver = {
	.name = "cs53l32a",
	.id = I2C_DRIVERID_CS53L32A,
	.flags = I2C_DF_NOTIFY,
	.attach_adapter = cs53l32a_probe,
	.detach_client = cs53l32a_detach,
	.command = cs53l32a_command,
	.owner = THIS_MODULE,
};


static int __init cs53l32a_init_module(void)
{
	return i2c_add_driver(&i2c_driver);
}

static void __exit cs53l32a_cleanup_module(void)
{
	i2c_del_driver(&i2c_driver);
}

module_init(cs53l32a_init_module);
module_exit(cs53l32a_cleanup_module);
Commit	Line	Data
f4067fd4 HV	1	/*
	2	* cs53l32a (Adaptec AVC-2010 and AVC-2410) i2c ivtv driver.
	3	* Copyright (C) 2005 Martin Vaughan
	4	*
	5	* Audio source switching for Adaptec AVC-2410 added by Trev Jackson
	6	*
	7	* This program is free software; you can redistribute it and/or modify
	8	* it under the terms of the GNU General Public License as published by
	9	* the Free Software Foundation; either version 2 of the License, or
	10	* (at your option) any later version.
	11	*
	12	* This program is distributed in the hope that it will be useful,
	13	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	14	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	15	* GNU General Public License for more details.
	16	*
	17	* You should have received a copy of the GNU General Public License
	18	* along with this program; if not, write to the Free Software
	19	* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
	20	*/
	21
	22
	23	#include <linux/module.h>
	24	#include <linux/types.h>
	25	#include <linux/ioctl.h>
	26	#include <asm/uaccess.h>
	27	#include <linux/i2c.h>
	28	#include <linux/videodev.h>
	29	#include <media/audiochip.h>
	30	#include <media/id.h>
	31
	32	MODULE_DESCRIPTION("i2c device driver for cs53l32a Audio ADC");
	33	MODULE_AUTHOR("Martin Vaughan");
	34	MODULE_LICENSE("GPL");
	35
	36	static int debug = 0;
	37
	38	module_param(debug, bool, 0644);
	39
	40	MODULE_PARM_DESC(debug, "Debugging messages\n\t\t\t0=Off (default), 1=On");
	41
	42	#define cs53l32a_dbg(fmt, arg...) \
	43	do { \
	44	if (debug) \
	45	printk(KERN_INFO "%s debug %d-%04x: " fmt, client->driver->name, \
	46	i2c_adapter_id(client->adapter), client->addr , ## arg); \
	47	} while (0)
	48
	49	#define cs53l32a_err(fmt, arg...) do { \
	50	printk(KERN_ERR "%s %d-%04x: " fmt, client->driver->name, \
	51	i2c_adapter_id(client->adapter), client->addr , ## arg); } while (0)
	52	#define cs53l32a_info(fmt, arg...) do { \
	53	printk(KERN_INFO "%s %d-%04x: " fmt, client->driver->name, \
	54	i2c_adapter_id(client->adapter), client->addr , ## arg); } while (0)
	55
	56	static unsigned short normal_i2c[] = { 0x22 >> 1, I2C_CLIENT_END };
	57
	58
	59	I2C_CLIENT_INSMOD;
	60
	61	/* ----------------------------------------------------------------------- */
	62
	63	static int cs53l32a_write(struct i2c_client *client, u8 reg, u8 value)
	64	{
65	return i2c_smbus_write_byte_data(client, reg, value);
66	}
67
68	static int cs53l32a_read(struct i2c_client *client, u8 reg)
69	{
70	return i2c_smbus_read_byte_data(client, reg);
71	}
72
73	static int cs53l32a_command(struct i2c_client *client, unsigned int cmd,
74	void *arg)
75	{
76	int *input = arg;
77
78	switch (cmd) {
79	case AUDC_SET_INPUT:
80	switch (*input) {
81	case AUDIO_TUNER:
82	cs53l32a_write(client, 0x01, 0x01);
83	break;
84	case AUDIO_EXTERN:
85	cs53l32a_write(client, 0x01, 0x21);
86	break;
87	case AUDIO_MUTE:
88	cs53l32a_write(client, 0x03, 0xF0);
89	break;
90	case AUDIO_UNMUTE:
91	cs53l32a_write(client, 0x03, 0x30);
92	break;
93	default:
94	cs53l32a_err("Invalid input %d.\n", *input);
95	return -EINVAL;
96	}
97	break;
98
99	case VIDIOC_S_CTRL:
100	{
101	struct v4l2_control *ctrl = arg;
102
103	if (ctrl->id != V4L2_CID_AUDIO_VOLUME)
104	return -EINVAL;
105	if (ctrl->value > 12 \|\| ctrl->value < -90)
106	return -EINVAL;
107	cs53l32a_write(client, 0x04, (u8) ctrl->value);
108	cs53l32a_write(client, 0x05, (u8) ctrl->value);
109	break;
110	}
111
112	case VIDIOC_LOG_STATUS:
113	{
114	u8 v = cs53l32a_read(client, 0x01);
115	u8 m = cs53l32a_read(client, 0x03);
116
117	cs53l32a_info("Input: %s%s\n",
118	v == 0x21 ? "external line in" : "tuner",
119	(m & 0xC0) ? " (muted)" : "");
120	break;
121	}
122
123	default:
124	return -EINVAL;
125	}
126	return 0;
127	}
128
129	/* ----------------------------------------------------------------------- */
130
131	/* i2c implementation */
132
133	/*
134	* Generic i2c probe
135	* concerning the addresses: i2c wants 7 bit (without the r/w bit), so '>>1'
136	*/
137
138	static struct i2c_driver i2c_driver;
139
140	static int cs53l32a_attach(struct i2c_adapter *adapter, int address, int kind)
141	{
142	struct i2c_client *client;
143	int i;
144
145	/* Check if the adapter supports the needed features */
146	if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
147	return 0;
148
149	client = kmalloc(sizeof(struct i2c_client), GFP_KERNEL);
150	if (client == 0)
151	return -ENOMEM;
152
153	memset(client, 0, sizeof(struct i2c_client));
154	client->addr = address;
155	client->adapter = adapter;
156	client->driver = &i2c_driver;
157	client->flags = I2C_CLIENT_ALLOW_USE;
158	snprintf(client->name, sizeof(client->name) - 1, "cs53l32a");
159
160	cs53l32a_info("chip found @ 0x%x (%s)\n", address << 1, adapter->name);
161
162	for (i = 1; i <= 7; i++) {
163	u8 v = cs53l32a_read(client, i);
164
165	cs53l32a_dbg("Read Reg %d %02x\n", i, v);
166	}
167
168	/* Set cs53l32a internal register for Adaptec 2010/2410 setup */
169
170	cs53l32a_write(client, 0x01, (u8) 0x21);
171	cs53l32a_write(client, 0x02, (u8) 0x29);
172	cs53l32a_write(client, 0x03, (u8) 0x30);
173	cs53l32a_write(client, 0x04, (u8) 0x00);
174	cs53l32a_write(client, 0x05, (u8) 0x00);
175	cs53l32a_write(client, 0x06, (u8) 0x00);
176	cs53l32a_write(client, 0x07, (u8) 0x00);
177
178	/* Display results, should be 0x21,0x29,0x30,0x00,0x00,0x00,0x00 */
179
180	for (i = 1; i <= 7; i++) {
181	u8 v = cs53l32a_read(client, i);
182
183	cs53l32a_dbg("Read Reg %d %02x\n", i, v);
184	}
185
186	i2c_attach_client(client);
187
188	return 0;
189	}
190
191	static int cs53l32a_probe(struct i2c_adapter *adapter)
192	{
193	return i2c_probe(adapter, &addr_data, cs53l32a_attach);
194	}
195
196	static int cs53l32a_detach(struct i2c_client *client)
197	{
198	int err;
199
200	err = i2c_detach_client(client);
201	if (err) {
202	return err;
203	}
204	kfree(client);
205
206	return 0;
207	}
208
209	/* ----------------------------------------------------------------------- */
210
211	/* i2c implementation */
212	static struct i2c_driver i2c_driver = {
213	.name = "cs53l32a",
214	.id = I2C_DRIVERID_CS53L32A,
215	.flags = I2C_DF_NOTIFY,
216	.attach_adapter = cs53l32a_probe,
217	.detach_client = cs53l32a_detach,
218	.command = cs53l32a_command,
219	.owner = THIS_MODULE,
220	};
221
222
223	static int __init cs53l32a_init_module(void)
224	{
225	return i2c_add_driver(&i2c_driver);
226	}
227
228	static void __exit cs53l32a_cleanup_module(void)
229	{
230	i2c_del_driver(&i2c_driver);
231	}
232
233	module_init(cs53l32a_init_module);
234	module_exit(cs53l32a_cleanup_module);