forked from Minki/linux
251190cffa
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
248 lines
6.5 KiB
C
248 lines
6.5 KiB
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/slab.h>
|
|
#include <linux/ioctl.h>
|
|
#include <asm/uaccess.h>
|
|
#include <linux/i2c.h>
|
|
#include <linux/videodev2.h>
|
|
#include <media/v4l2-device.h>
|
|
#include <media/v4l2-chip-ident.h>
|
|
#include <media/v4l2-ctrls.h>
|
|
#include <media/v4l2-i2c-drv.h>
|
|
|
|
MODULE_DESCRIPTION("i2c device driver for cs53l32a Audio ADC");
|
|
MODULE_AUTHOR("Martin Vaughan");
|
|
MODULE_LICENSE("GPL");
|
|
|
|
static int debug;
|
|
|
|
module_param(debug, bool, 0644);
|
|
|
|
MODULE_PARM_DESC(debug, "Debugging messages, 0=Off (default), 1=On");
|
|
|
|
|
|
struct cs53l32a_state {
|
|
struct v4l2_subdev sd;
|
|
struct v4l2_ctrl_handler hdl;
|
|
};
|
|
|
|
static inline struct cs53l32a_state *to_state(struct v4l2_subdev *sd)
|
|
{
|
|
return container_of(sd, struct cs53l32a_state, sd);
|
|
}
|
|
|
|
static inline struct v4l2_subdev *to_sd(struct v4l2_ctrl *ctrl)
|
|
{
|
|
return &container_of(ctrl->handler, struct cs53l32a_state, hdl)->sd;
|
|
}
|
|
|
|
/* ----------------------------------------------------------------------- */
|
|
|
|
static int cs53l32a_write(struct v4l2_subdev *sd, u8 reg, u8 value)
|
|
{
|
|
struct i2c_client *client = v4l2_get_subdevdata(sd);
|
|
|
|
return i2c_smbus_write_byte_data(client, reg, value);
|
|
}
|
|
|
|
static int cs53l32a_read(struct v4l2_subdev *sd, u8 reg)
|
|
{
|
|
struct i2c_client *client = v4l2_get_subdevdata(sd);
|
|
|
|
return i2c_smbus_read_byte_data(client, reg);
|
|
}
|
|
|
|
static int cs53l32a_s_routing(struct v4l2_subdev *sd,
|
|
u32 input, u32 output, u32 config)
|
|
{
|
|
/* There are 2 physical inputs, but the second input can be
|
|
placed in two modes, the first mode bypasses the PGA (gain),
|
|
the second goes through the PGA. Hence there are three
|
|
possible inputs to choose from. */
|
|
if (input > 2) {
|
|
v4l2_err(sd, "Invalid input %d.\n", input);
|
|
return -EINVAL;
|
|
}
|
|
cs53l32a_write(sd, 0x01, 0x01 + (input << 4));
|
|
return 0;
|
|
}
|
|
|
|
static int cs53l32a_s_ctrl(struct v4l2_ctrl *ctrl)
|
|
{
|
|
struct v4l2_subdev *sd = to_sd(ctrl);
|
|
|
|
switch (ctrl->id) {
|
|
case V4L2_CID_AUDIO_MUTE:
|
|
cs53l32a_write(sd, 0x03, ctrl->val ? 0xf0 : 0x30);
|
|
return 0;
|
|
case V4L2_CID_AUDIO_VOLUME:
|
|
cs53l32a_write(sd, 0x04, (u8)ctrl->val);
|
|
cs53l32a_write(sd, 0x05, (u8)ctrl->val);
|
|
return 0;
|
|
}
|
|
return -EINVAL;
|
|
}
|
|
|
|
static int cs53l32a_g_chip_ident(struct v4l2_subdev *sd, struct v4l2_dbg_chip_ident *chip)
|
|
{
|
|
struct i2c_client *client = v4l2_get_subdevdata(sd);
|
|
|
|
return v4l2_chip_ident_i2c_client(client,
|
|
chip, V4L2_IDENT_CS53l32A, 0);
|
|
}
|
|
|
|
static int cs53l32a_log_status(struct v4l2_subdev *sd)
|
|
{
|
|
struct cs53l32a_state *state = to_state(sd);
|
|
u8 v = cs53l32a_read(sd, 0x01);
|
|
|
|
v4l2_info(sd, "Input: %d\n", (v >> 4) & 3);
|
|
v4l2_ctrl_handler_log_status(&state->hdl, sd->name);
|
|
return 0;
|
|
}
|
|
|
|
/* ----------------------------------------------------------------------- */
|
|
|
|
static const struct v4l2_ctrl_ops cs53l32a_ctrl_ops = {
|
|
.s_ctrl = cs53l32a_s_ctrl,
|
|
};
|
|
|
|
static const struct v4l2_subdev_core_ops cs53l32a_core_ops = {
|
|
.log_status = cs53l32a_log_status,
|
|
.g_chip_ident = cs53l32a_g_chip_ident,
|
|
.g_ext_ctrls = v4l2_subdev_g_ext_ctrls,
|
|
.try_ext_ctrls = v4l2_subdev_try_ext_ctrls,
|
|
.s_ext_ctrls = v4l2_subdev_s_ext_ctrls,
|
|
.g_ctrl = v4l2_subdev_g_ctrl,
|
|
.s_ctrl = v4l2_subdev_s_ctrl,
|
|
.queryctrl = v4l2_subdev_queryctrl,
|
|
.querymenu = v4l2_subdev_querymenu,
|
|
};
|
|
|
|
static const struct v4l2_subdev_audio_ops cs53l32a_audio_ops = {
|
|
.s_routing = cs53l32a_s_routing,
|
|
};
|
|
|
|
static const struct v4l2_subdev_ops cs53l32a_ops = {
|
|
.core = &cs53l32a_core_ops,
|
|
.audio = &cs53l32a_audio_ops,
|
|
};
|
|
|
|
/* ----------------------------------------------------------------------- */
|
|
|
|
/* i2c implementation */
|
|
|
|
/*
|
|
* Generic i2c probe
|
|
* concerning the addresses: i2c wants 7 bit (without the r/w bit), so '>>1'
|
|
*/
|
|
|
|
static int cs53l32a_probe(struct i2c_client *client,
|
|
const struct i2c_device_id *id)
|
|
{
|
|
struct cs53l32a_state *state;
|
|
struct v4l2_subdev *sd;
|
|
int i;
|
|
|
|
/* Check if the adapter supports the needed features */
|
|
if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA))
|
|
return -EIO;
|
|
|
|
if (!id)
|
|
strlcpy(client->name, "cs53l32a", sizeof(client->name));
|
|
|
|
v4l_info(client, "chip found @ 0x%x (%s)\n",
|
|
client->addr << 1, client->adapter->name);
|
|
|
|
state = kzalloc(sizeof(struct cs53l32a_state), GFP_KERNEL);
|
|
if (state == NULL)
|
|
return -ENOMEM;
|
|
sd = &state->sd;
|
|
v4l2_i2c_subdev_init(sd, client, &cs53l32a_ops);
|
|
|
|
for (i = 1; i <= 7; i++) {
|
|
u8 v = cs53l32a_read(sd, i);
|
|
|
|
v4l2_dbg(1, debug, sd, "Read Reg %d %02x\n", i, v);
|
|
}
|
|
|
|
v4l2_ctrl_handler_init(&state->hdl, 2);
|
|
v4l2_ctrl_new_std(&state->hdl, &cs53l32a_ctrl_ops,
|
|
V4L2_CID_AUDIO_VOLUME, -96, 12, 1, 0);
|
|
v4l2_ctrl_new_std(&state->hdl, &cs53l32a_ctrl_ops,
|
|
V4L2_CID_AUDIO_MUTE, 0, 1, 1, 0);
|
|
sd->ctrl_handler = &state->hdl;
|
|
if (state->hdl.error) {
|
|
int err = state->hdl.error;
|
|
|
|
v4l2_ctrl_handler_free(&state->hdl);
|
|
kfree(state);
|
|
return err;
|
|
}
|
|
|
|
/* Set cs53l32a internal register for Adaptec 2010/2410 setup */
|
|
|
|
cs53l32a_write(sd, 0x01, 0x21);
|
|
cs53l32a_write(sd, 0x02, 0x29);
|
|
cs53l32a_write(sd, 0x03, 0x30);
|
|
cs53l32a_write(sd, 0x04, 0x00);
|
|
cs53l32a_write(sd, 0x05, 0x00);
|
|
cs53l32a_write(sd, 0x06, 0x00);
|
|
cs53l32a_write(sd, 0x07, 0x00);
|
|
|
|
/* Display results, should be 0x21,0x29,0x30,0x00,0x00,0x00,0x00 */
|
|
|
|
for (i = 1; i <= 7; i++) {
|
|
u8 v = cs53l32a_read(sd, i);
|
|
|
|
v4l2_dbg(1, debug, sd, "Read Reg %d %02x\n", i, v);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int cs53l32a_remove(struct i2c_client *client)
|
|
{
|
|
struct v4l2_subdev *sd = i2c_get_clientdata(client);
|
|
struct cs53l32a_state *state = to_state(sd);
|
|
|
|
v4l2_device_unregister_subdev(sd);
|
|
v4l2_ctrl_handler_free(&state->hdl);
|
|
kfree(state);
|
|
return 0;
|
|
}
|
|
|
|
static const struct i2c_device_id cs53l32a_id[] = {
|
|
{ "cs53l32a", 0 },
|
|
{ }
|
|
};
|
|
MODULE_DEVICE_TABLE(i2c, cs53l32a_id);
|
|
|
|
static struct v4l2_i2c_driver_data v4l2_i2c_data = {
|
|
.name = "cs53l32a",
|
|
.remove = cs53l32a_remove,
|
|
.probe = cs53l32a_probe,
|
|
.id_table = cs53l32a_id,
|
|
};
|