diff options
author | Richard Röjfors <richard.rojfors@pelagicore.com> | 2010-02-03 12:59:39 -0300 |
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committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2010-02-26 15:10:56 -0300 |
commit | d44d1f3bfaef71ce27b4fd2284ec528b52617977 (patch) | |
tree | 8e17a7eac96940eafba3bbb58f3263fdc9a4b465 /drivers | |
parent | 6525e67c01d303153272c26cb8118a3c314f4a1f (diff) | |
download | linux-d44d1f3bfaef71ce27b4fd2284ec528b52617977.tar.bz2 |
V4L/DVB: radio: Add radio-timb
This patch add supports for the radio system on the Intel Russellville board.
It's a In-Vehicle Infotainment board with a radio tuner and DSP.
This umbrella driver has the DSP and tuner as V4L2 subdevs and calls them
when needed.
Signed-off-by: Richard Röjfors <richard.rojfors@pelagicore.com>
Reviewed-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers')
-rw-r--r-- | drivers/media/radio/Kconfig | 10 | ||||
-rw-r--r-- | drivers/media/radio/Makefile | 1 | ||||
-rw-r--r-- | drivers/media/radio/radio-timb.c | 244 |
3 files changed, 255 insertions, 0 deletions
diff --git a/drivers/media/radio/Kconfig b/drivers/media/radio/Kconfig index e5f0d7a8dd0b..7a1b2d219592 100644 --- a/drivers/media/radio/Kconfig +++ b/drivers/media/radio/Kconfig @@ -441,4 +441,14 @@ config RADIO_TEF6862 To compile this driver as a module, choose M here: the module will be called TEF6862. +config RADIO_TIMBERDALE + tristate "Enable the Timberdale radio driver" + depends on MFD_TIMBERDALE && VIDEO_V4L2 + select RADIO_TEF6862 + select RADIO_SAA7706H + ---help--- + This is a kind of umbrella driver for the Radio Tuner and DSP + found behind the Timberdale FPGA on the Russellville board. + Enabling this driver will automatically select the DSP and tuner. + endif # RADIO_ADAPTERS diff --git a/drivers/media/radio/Makefile b/drivers/media/radio/Makefile index f681dbfe9ef0..f615583b4837 100644 --- a/drivers/media/radio/Makefile +++ b/drivers/media/radio/Makefile @@ -25,5 +25,6 @@ obj-$(CONFIG_USB_MR800) += radio-mr800.o obj-$(CONFIG_RADIO_TEA5764) += radio-tea5764.o obj-$(CONFIG_RADIO_SAA7706H) += saa7706h.o obj-$(CONFIG_RADIO_TEF6862) += tef6862.o +obj-$(CONFIG_RADIO_TIMBERDALE) += radio-timb.o EXTRA_CFLAGS += -Isound diff --git a/drivers/media/radio/radio-timb.c b/drivers/media/radio/radio-timb.c new file mode 100644 index 000000000000..0de457f6e6eb --- /dev/null +++ b/drivers/media/radio/radio-timb.c @@ -0,0 +1,244 @@ +/* + * 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. + */ + +#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> + +#define DRIVER_NAME "timb-radio" + +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; +}; + + +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; +} + +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); +} + +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); +} + +static int timbradio_vidioc_g_input(struct file *filp, void *priv, + unsigned int *i) +{ + *i = 0; + return 0; +} + +static int timbradio_vidioc_s_input(struct file *filp, void *priv, + unsigned int i) +{ + return i ? -EINVAL : 0; +} + +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; +} + +static int timbradio_vidioc_s_audio(struct file *file, void *priv, + struct v4l2_audio *a) +{ + return a->index ? -EINVAL : 0; +} + +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); +} + +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); +} + +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); +} + +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); +} + +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); +} + +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 +}; + +static const struct v4l2_file_operations timbradio_fops = { + .owner = THIS_MODULE, + .ioctl = video_ioctl2, +}; + +static int __devinit timbradio_probe(struct platform_device *pdev) +{ + struct timb_radio_platform_data *pdata = pdev->dev.platform_data; + struct timbradio *tr; + int err; + + if (!pdata) { + dev_err(&pdev->dev, "Platform data missing\n"); + err = -EINVAL; + goto err; + } + + tr = kzalloc(sizeof(*tr), GFP_KERNEL); + if (!tr) { + err = -ENOMEM; + goto err; + } + + tr->pdata = *pdata; + + 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; + + 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; + + tr->video_dev.v4l2_dev = &tr->v4l2_dev; + + 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; + } + + video_set_drvdata(&tr->video_dev, tr); + + platform_set_drvdata(pdev, tr); + return 0; + +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); + + return err; +} + +static int __devexit timbradio_remove(struct platform_device *pdev) +{ + struct timbradio *tr = platform_get_drvdata(pdev); + + video_unregister_device(&tr->video_dev); + video_device_release_empty(&tr->video_dev); + + v4l2_device_unregister(&tr->v4l2_dev); + + kfree(tr); + + return 0; +} + +static struct platform_driver timbradio_platform_driver = { + .driver = { + .name = DRIVER_NAME, + .owner = THIS_MODULE, + }, + .probe = timbradio_probe, + .remove = timbradio_remove, +}; + +/*--------------------------------------------------------------------------*/ + +static int __init timbradio_init(void) +{ + return platform_driver_register(&timbradio_platform_driver); +} + +static void __exit timbradio_exit(void) +{ + platform_driver_unregister(&timbradio_platform_driver); +} + +module_init(timbradio_init); +module_exit(timbradio_exit); + +MODULE_DESCRIPTION("Timberdale Radio driver"); +MODULE_AUTHOR("Mocean Laboratories <info@mocean-labs.com>"); +MODULE_LICENSE("GPL v2"); +MODULE_ALIAS("platform:"DRIVER_NAME); |