| /* |
| * 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/io.h> |
| #include <media/v4l2-ioctl.h> |
| #include <media/v4l2-device.h> |
| #include <media/v4l2-ctrls.h> |
| #include <media/v4l2-event.h> |
| #include <linux/platform_device.h> |
| #include <linux/interrupt.h> |
| #include <linux/slab.h> |
| #include <linux/i2c.h> |
| #include <linux/module.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; |
| struct mutex lock; |
| }; |
| |
| |
| 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->device_caps = V4L2_CAP_TUNER | V4L2_CAP_RADIO; |
| v->capabilities = v->device_caps | V4L2_CAP_DEVICE_CAPS; |
| 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, |
| const 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_s_frequency(struct file *file, void *priv, |
| const 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 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_log_status = v4l2_ctrl_log_status, |
| .vidioc_subscribe_event = v4l2_ctrl_subscribe_event, |
| .vidioc_unsubscribe_event = v4l2_event_unsubscribe, |
| }; |
| |
| static const struct v4l2_file_operations timbradio_fops = { |
| .owner = THIS_MODULE, |
| .open = v4l2_fh_open, |
| .release = v4l2_fh_release, |
| .poll = v4l2_ctrl_poll, |
| .unlocked_ioctl = video_ioctl2, |
| }; |
| |
| static int 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 = devm_kzalloc(&pdev->dev, sizeof(*tr), GFP_KERNEL); |
| if (!tr) { |
| err = -ENOMEM; |
| goto err; |
| } |
| |
| tr->pdata = *pdata; |
| mutex_init(&tr->lock); |
| |
| 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; |
| tr->video_dev.lock = &tr->lock; |
| |
| strlcpy(tr->v4l2_dev.name, DRIVER_NAME, sizeof(tr->v4l2_dev.name)); |
| err = v4l2_device_register(NULL, &tr->v4l2_dev); |
| if (err) |
| goto err; |
| |
| tr->video_dev.v4l2_dev = &tr->v4l2_dev; |
| |
| tr->sd_tuner = v4l2_i2c_new_subdev_board(&tr->v4l2_dev, |
| i2c_get_adapter(pdata->i2c_adapter), pdata->tuner, NULL); |
| tr->sd_dsp = v4l2_i2c_new_subdev_board(&tr->v4l2_dev, |
| i2c_get_adapter(pdata->i2c_adapter), pdata->dsp, NULL); |
| if (tr->sd_tuner == NULL || tr->sd_dsp == NULL) { |
| err = -ENODEV; |
| goto err_video_req; |
| } |
| |
| tr->v4l2_dev.ctrl_handler = tr->sd_dsp->ctrl_handler; |
| |
| 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: |
| v4l2_device_unregister(&tr->v4l2_dev); |
| err: |
| dev_err(&pdev->dev, "Failed to register: %d\n", err); |
| |
| return err; |
| } |
| |
| static int timbradio_remove(struct platform_device *pdev) |
| { |
| struct timbradio *tr = platform_get_drvdata(pdev); |
| |
| video_unregister_device(&tr->video_dev); |
| v4l2_device_unregister(&tr->v4l2_dev); |
| return 0; |
| } |
| |
| static struct platform_driver timbradio_platform_driver = { |
| .driver = { |
| .name = DRIVER_NAME, |
| }, |
| .probe = timbradio_probe, |
| .remove = timbradio_remove, |
| }; |
| |
| module_platform_driver(timbradio_platform_driver); |
| |
| MODULE_DESCRIPTION("Timberdale Radio driver"); |
| MODULE_AUTHOR("Mocean Laboratories <info@mocean-labs.com>"); |
| MODULE_LICENSE("GPL v2"); |
| MODULE_VERSION("0.0.2"); |
| MODULE_ALIAS("platform:"DRIVER_NAME); |