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Richard Röjfors
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Mauro Carvalho Chehab
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Feb 26, 2010
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--- | ||
refs/heads/master: 6525e67c01d303153272c26cb8118a3c314f4a1f | ||
refs/heads/master: d44d1f3bfaef71ce27b4fd2284ec528b52617977 |
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/* | ||
* radio-timb.c Timberdale FPGA Radio driver | ||
* Copyright (c) 2009 Intel Corporation | ||
* | ||
* This program is free software; you can redistribute it and/or modify | ||
* it under the terms of the GNU General Public License version 2 as | ||
* published by the Free Software Foundation. | ||
* | ||
* 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. | ||
*/ | ||
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#include <linux/version.h> | ||
#include <linux/io.h> | ||
#include <media/v4l2-ioctl.h> | ||
#include <media/v4l2-device.h> | ||
#include <linux/platform_device.h> | ||
#include <linux/interrupt.h> | ||
#include <linux/i2c.h> | ||
#include <media/timb_radio.h> | ||
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#define DRIVER_NAME "timb-radio" | ||
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struct timbradio { | ||
struct timb_radio_platform_data pdata; | ||
struct v4l2_subdev *sd_tuner; | ||
struct v4l2_subdev *sd_dsp; | ||
struct video_device video_dev; | ||
struct v4l2_device v4l2_dev; | ||
}; | ||
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static int timbradio_vidioc_querycap(struct file *file, void *priv, | ||
struct v4l2_capability *v) | ||
{ | ||
strlcpy(v->driver, DRIVER_NAME, sizeof(v->driver)); | ||
strlcpy(v->card, "Timberdale Radio", sizeof(v->card)); | ||
snprintf(v->bus_info, sizeof(v->bus_info), "platform:"DRIVER_NAME); | ||
v->version = KERNEL_VERSION(0, 0, 1); | ||
v->capabilities = V4L2_CAP_TUNER | V4L2_CAP_RADIO; | ||
return 0; | ||
} | ||
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static int timbradio_vidioc_g_tuner(struct file *file, void *priv, | ||
struct v4l2_tuner *v) | ||
{ | ||
struct timbradio *tr = video_drvdata(file); | ||
return v4l2_subdev_call(tr->sd_tuner, tuner, g_tuner, v); | ||
} | ||
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static int timbradio_vidioc_s_tuner(struct file *file, void *priv, | ||
struct v4l2_tuner *v) | ||
{ | ||
struct timbradio *tr = video_drvdata(file); | ||
return v4l2_subdev_call(tr->sd_tuner, tuner, s_tuner, v); | ||
} | ||
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static int timbradio_vidioc_g_input(struct file *filp, void *priv, | ||
unsigned int *i) | ||
{ | ||
*i = 0; | ||
return 0; | ||
} | ||
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static int timbradio_vidioc_s_input(struct file *filp, void *priv, | ||
unsigned int i) | ||
{ | ||
return i ? -EINVAL : 0; | ||
} | ||
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static int timbradio_vidioc_g_audio(struct file *file, void *priv, | ||
struct v4l2_audio *a) | ||
{ | ||
a->index = 0; | ||
strlcpy(a->name, "Radio", sizeof(a->name)); | ||
a->capability = V4L2_AUDCAP_STEREO; | ||
return 0; | ||
} | ||
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static int timbradio_vidioc_s_audio(struct file *file, void *priv, | ||
struct v4l2_audio *a) | ||
{ | ||
return a->index ? -EINVAL : 0; | ||
} | ||
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static int timbradio_vidioc_s_frequency(struct file *file, void *priv, | ||
struct v4l2_frequency *f) | ||
{ | ||
struct timbradio *tr = video_drvdata(file); | ||
return v4l2_subdev_call(tr->sd_tuner, tuner, s_frequency, f); | ||
} | ||
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static int timbradio_vidioc_g_frequency(struct file *file, void *priv, | ||
struct v4l2_frequency *f) | ||
{ | ||
struct timbradio *tr = video_drvdata(file); | ||
return v4l2_subdev_call(tr->sd_tuner, tuner, g_frequency, f); | ||
} | ||
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static int timbradio_vidioc_queryctrl(struct file *file, void *priv, | ||
struct v4l2_queryctrl *qc) | ||
{ | ||
struct timbradio *tr = video_drvdata(file); | ||
return v4l2_subdev_call(tr->sd_dsp, core, queryctrl, qc); | ||
} | ||
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static int timbradio_vidioc_g_ctrl(struct file *file, void *priv, | ||
struct v4l2_control *ctrl) | ||
{ | ||
struct timbradio *tr = video_drvdata(file); | ||
return v4l2_subdev_call(tr->sd_dsp, core, g_ctrl, ctrl); | ||
} | ||
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static int timbradio_vidioc_s_ctrl(struct file *file, void *priv, | ||
struct v4l2_control *ctrl) | ||
{ | ||
struct timbradio *tr = video_drvdata(file); | ||
return v4l2_subdev_call(tr->sd_dsp, core, s_ctrl, ctrl); | ||
} | ||
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static const struct v4l2_ioctl_ops timbradio_ioctl_ops = { | ||
.vidioc_querycap = timbradio_vidioc_querycap, | ||
.vidioc_g_tuner = timbradio_vidioc_g_tuner, | ||
.vidioc_s_tuner = timbradio_vidioc_s_tuner, | ||
.vidioc_g_frequency = timbradio_vidioc_g_frequency, | ||
.vidioc_s_frequency = timbradio_vidioc_s_frequency, | ||
.vidioc_g_input = timbradio_vidioc_g_input, | ||
.vidioc_s_input = timbradio_vidioc_s_input, | ||
.vidioc_g_audio = timbradio_vidioc_g_audio, | ||
.vidioc_s_audio = timbradio_vidioc_s_audio, | ||
.vidioc_queryctrl = timbradio_vidioc_queryctrl, | ||
.vidioc_g_ctrl = timbradio_vidioc_g_ctrl, | ||
.vidioc_s_ctrl = timbradio_vidioc_s_ctrl | ||
}; | ||
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static const struct v4l2_file_operations timbradio_fops = { | ||
.owner = THIS_MODULE, | ||
.ioctl = video_ioctl2, | ||
}; | ||
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static int __devinit timbradio_probe(struct platform_device *pdev) | ||
{ | ||
struct timb_radio_platform_data *pdata = pdev->dev.platform_data; | ||
struct timbradio *tr; | ||
int err; | ||
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if (!pdata) { | ||
dev_err(&pdev->dev, "Platform data missing\n"); | ||
err = -EINVAL; | ||
goto err; | ||
} | ||
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tr = kzalloc(sizeof(*tr), GFP_KERNEL); | ||
if (!tr) { | ||
err = -ENOMEM; | ||
goto err; | ||
} | ||
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tr->pdata = *pdata; | ||
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strlcpy(tr->video_dev.name, "Timberdale Radio", | ||
sizeof(tr->video_dev.name)); | ||
tr->video_dev.fops = &timbradio_fops; | ||
tr->video_dev.ioctl_ops = &timbradio_ioctl_ops; | ||
tr->video_dev.release = video_device_release_empty; | ||
tr->video_dev.minor = -1; | ||
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strlcpy(tr->v4l2_dev.name, DRIVER_NAME, sizeof(tr->v4l2_dev.name)); | ||
err = v4l2_device_register(NULL, &tr->v4l2_dev); | ||
if (err) | ||
goto err_v4l2_dev; | ||
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tr->video_dev.v4l2_dev = &tr->v4l2_dev; | ||
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err = video_register_device(&tr->video_dev, VFL_TYPE_RADIO, -1); | ||
if (err) { | ||
dev_err(&pdev->dev, "Error reg video\n"); | ||
goto err_video_req; | ||
} | ||
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video_set_drvdata(&tr->video_dev, tr); | ||
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platform_set_drvdata(pdev, tr); | ||
return 0; | ||
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err_video_req: | ||
video_device_release_empty(&tr->video_dev); | ||
v4l2_device_unregister(&tr->v4l2_dev); | ||
err_v4l2_dev: | ||
kfree(tr); | ||
err: | ||
dev_err(&pdev->dev, "Failed to register: %d\n", err); | ||
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return err; | ||
} | ||
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static int __devexit timbradio_remove(struct platform_device *pdev) | ||
{ | ||
struct timbradio *tr = platform_get_drvdata(pdev); | ||
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video_unregister_device(&tr->video_dev); | ||
video_device_release_empty(&tr->video_dev); | ||
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v4l2_device_unregister(&tr->v4l2_dev); | ||
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kfree(tr); | ||
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return 0; | ||
} | ||
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static struct platform_driver timbradio_platform_driver = { | ||
.driver = { | ||
.name = DRIVER_NAME, | ||
.owner = THIS_MODULE, | ||
}, | ||
.probe = timbradio_probe, | ||
.remove = timbradio_remove, | ||
}; | ||
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/*--------------------------------------------------------------------------*/ | ||
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static int __init timbradio_init(void) | ||
{ | ||
return platform_driver_register(&timbradio_platform_driver); | ||
} | ||
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static void __exit timbradio_exit(void) | ||
{ | ||
platform_driver_unregister(&timbradio_platform_driver); | ||
} | ||
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module_init(timbradio_init); | ||
module_exit(timbradio_exit); | ||
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MODULE_DESCRIPTION("Timberdale Radio driver"); | ||
MODULE_AUTHOR("Mocean Laboratories <info@mocean-labs.com>"); | ||
MODULE_LICENSE("GPL v2"); | ||
MODULE_ALIAS("platform:"DRIVER_NAME); |
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Original file line number | Diff line number | Diff line change |
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@@ -0,0 +1,36 @@ | ||
/* | ||
* timb_radio.h Platform struct for the Timberdale radio driver | ||
* Copyright (c) 2009 Intel Corporation | ||
* | ||
* This program is free software; you can redistribute it and/or modify | ||
* it under the terms of the GNU General Public License version 2 as | ||
* published by the Free Software Foundation. | ||
* | ||
* 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. | ||
*/ | ||
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#ifndef _TIMB_RADIO_ | ||
#define _TIMB_RADIO_ 1 | ||
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#include <linux/i2c.h> | ||
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struct timb_radio_platform_data { | ||
int i2c_adapter; /* I2C adapter where the tuner and dsp are attached */ | ||
struct { | ||
const char *module_name; | ||
struct i2c_board_info *info; | ||
} tuner; | ||
struct { | ||
const char *module_name; | ||
struct i2c_board_info *info; | ||
} dsp; | ||
}; | ||
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#endif |