forked from luck/tmp_suning_uos_patched
cb7a01ac32
Move ancillary I2C drivers into drivers/media/i2c, in order to better organize them. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
253 lines
6.6 KiB
C
253 lines
6.6 KiB
C
/*
|
|
* cs5345 Cirrus Logic 24-bit, 192 kHz Stereo Audio ADC
|
|
* Copyright (C) 2007 Hans Verkuil
|
|
*
|
|
* 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/kernel.h>
|
|
#include <linux/i2c.h>
|
|
#include <linux/videodev2.h>
|
|
#include <linux/slab.h>
|
|
#include <media/v4l2-device.h>
|
|
#include <media/v4l2-chip-ident.h>
|
|
#include <media/v4l2-ctrls.h>
|
|
|
|
MODULE_DESCRIPTION("i2c device driver for cs5345 Audio ADC");
|
|
MODULE_AUTHOR("Hans Verkuil");
|
|
MODULE_LICENSE("GPL");
|
|
|
|
static bool debug;
|
|
|
|
module_param(debug, bool, 0644);
|
|
|
|
MODULE_PARM_DESC(debug, "Debugging messages, 0=Off (default), 1=On");
|
|
|
|
struct cs5345_state {
|
|
struct v4l2_subdev sd;
|
|
struct v4l2_ctrl_handler hdl;
|
|
};
|
|
|
|
static inline struct cs5345_state *to_state(struct v4l2_subdev *sd)
|
|
{
|
|
return container_of(sd, struct cs5345_state, sd);
|
|
}
|
|
|
|
static inline struct v4l2_subdev *to_sd(struct v4l2_ctrl *ctrl)
|
|
{
|
|
return &container_of(ctrl->handler, struct cs5345_state, hdl)->sd;
|
|
}
|
|
|
|
/* ----------------------------------------------------------------------- */
|
|
|
|
static inline int cs5345_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 inline int cs5345_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 cs5345_s_routing(struct v4l2_subdev *sd,
|
|
u32 input, u32 output, u32 config)
|
|
{
|
|
if ((input & 0xf) > 6) {
|
|
v4l2_err(sd, "Invalid input %d.\n", input);
|
|
return -EINVAL;
|
|
}
|
|
cs5345_write(sd, 0x09, input & 0xf);
|
|
cs5345_write(sd, 0x05, input & 0xf0);
|
|
return 0;
|
|
}
|
|
|
|
static int cs5345_s_ctrl(struct v4l2_ctrl *ctrl)
|
|
{
|
|
struct v4l2_subdev *sd = to_sd(ctrl);
|
|
|
|
switch (ctrl->id) {
|
|
case V4L2_CID_AUDIO_MUTE:
|
|
cs5345_write(sd, 0x04, ctrl->val ? 0x80 : 0);
|
|
return 0;
|
|
case V4L2_CID_AUDIO_VOLUME:
|
|
cs5345_write(sd, 0x07, ((u8)ctrl->val) & 0x3f);
|
|
cs5345_write(sd, 0x08, ((u8)ctrl->val) & 0x3f);
|
|
return 0;
|
|
}
|
|
return -EINVAL;
|
|
}
|
|
|
|
#ifdef CONFIG_VIDEO_ADV_DEBUG
|
|
static int cs5345_g_register(struct v4l2_subdev *sd, struct v4l2_dbg_register *reg)
|
|
{
|
|
struct i2c_client *client = v4l2_get_subdevdata(sd);
|
|
|
|
if (!v4l2_chip_match_i2c_client(client, ®->match))
|
|
return -EINVAL;
|
|
if (!capable(CAP_SYS_ADMIN))
|
|
return -EPERM;
|
|
reg->size = 1;
|
|
reg->val = cs5345_read(sd, reg->reg & 0x1f);
|
|
return 0;
|
|
}
|
|
|
|
static int cs5345_s_register(struct v4l2_subdev *sd, struct v4l2_dbg_register *reg)
|
|
{
|
|
struct i2c_client *client = v4l2_get_subdevdata(sd);
|
|
|
|
if (!v4l2_chip_match_i2c_client(client, ®->match))
|
|
return -EINVAL;
|
|
if (!capable(CAP_SYS_ADMIN))
|
|
return -EPERM;
|
|
cs5345_write(sd, reg->reg & 0x1f, reg->val & 0xff);
|
|
return 0;
|
|
}
|
|
#endif
|
|
|
|
static int cs5345_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_CS5345, 0);
|
|
}
|
|
|
|
static int cs5345_log_status(struct v4l2_subdev *sd)
|
|
{
|
|
u8 v = cs5345_read(sd, 0x09) & 7;
|
|
u8 m = cs5345_read(sd, 0x04);
|
|
int vol = cs5345_read(sd, 0x08) & 0x3f;
|
|
|
|
v4l2_info(sd, "Input: %d%s\n", v,
|
|
(m & 0x80) ? " (muted)" : "");
|
|
if (vol >= 32)
|
|
vol = vol - 64;
|
|
v4l2_info(sd, "Volume: %d dB\n", vol);
|
|
return 0;
|
|
}
|
|
|
|
/* ----------------------------------------------------------------------- */
|
|
|
|
static const struct v4l2_ctrl_ops cs5345_ctrl_ops = {
|
|
.s_ctrl = cs5345_s_ctrl,
|
|
};
|
|
|
|
static const struct v4l2_subdev_core_ops cs5345_core_ops = {
|
|
.log_status = cs5345_log_status,
|
|
.g_chip_ident = cs5345_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,
|
|
#ifdef CONFIG_VIDEO_ADV_DEBUG
|
|
.g_register = cs5345_g_register,
|
|
.s_register = cs5345_s_register,
|
|
#endif
|
|
};
|
|
|
|
static const struct v4l2_subdev_audio_ops cs5345_audio_ops = {
|
|
.s_routing = cs5345_s_routing,
|
|
};
|
|
|
|
static const struct v4l2_subdev_ops cs5345_ops = {
|
|
.core = &cs5345_core_ops,
|
|
.audio = &cs5345_audio_ops,
|
|
};
|
|
|
|
/* ----------------------------------------------------------------------- */
|
|
|
|
static int cs5345_probe(struct i2c_client *client,
|
|
const struct i2c_device_id *id)
|
|
{
|
|
struct cs5345_state *state;
|
|
struct v4l2_subdev *sd;
|
|
|
|
/* Check if the adapter supports the needed features */
|
|
if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA))
|
|
return -EIO;
|
|
|
|
v4l_info(client, "chip found @ 0x%x (%s)\n",
|
|
client->addr << 1, client->adapter->name);
|
|
|
|
state = kzalloc(sizeof(struct cs5345_state), GFP_KERNEL);
|
|
if (state == NULL)
|
|
return -ENOMEM;
|
|
sd = &state->sd;
|
|
v4l2_i2c_subdev_init(sd, client, &cs5345_ops);
|
|
|
|
v4l2_ctrl_handler_init(&state->hdl, 2);
|
|
v4l2_ctrl_new_std(&state->hdl, &cs5345_ctrl_ops,
|
|
V4L2_CID_AUDIO_MUTE, 0, 1, 1, 0);
|
|
v4l2_ctrl_new_std(&state->hdl, &cs5345_ctrl_ops,
|
|
V4L2_CID_AUDIO_VOLUME, -24, 24, 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 volume/mute */
|
|
v4l2_ctrl_handler_setup(&state->hdl);
|
|
|
|
cs5345_write(sd, 0x02, 0x00);
|
|
cs5345_write(sd, 0x04, 0x01);
|
|
cs5345_write(sd, 0x09, 0x01);
|
|
return 0;
|
|
}
|
|
|
|
/* ----------------------------------------------------------------------- */
|
|
|
|
static int cs5345_remove(struct i2c_client *client)
|
|
{
|
|
struct v4l2_subdev *sd = i2c_get_clientdata(client);
|
|
struct cs5345_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 cs5345_id[] = {
|
|
{ "cs5345", 0 },
|
|
{ }
|
|
};
|
|
MODULE_DEVICE_TABLE(i2c, cs5345_id);
|
|
|
|
static struct i2c_driver cs5345_driver = {
|
|
.driver = {
|
|
.owner = THIS_MODULE,
|
|
.name = "cs5345",
|
|
},
|
|
.probe = cs5345_probe,
|
|
.remove = cs5345_remove,
|
|
.id_table = cs5345_id,
|
|
};
|
|
|
|
module_i2c_driver(cs5345_driver);
|