1d44d1f3bSRichard Röjfors /* 2d44d1f3bSRichard Röjfors * radio-timb.c Timberdale FPGA Radio driver 3d44d1f3bSRichard Röjfors * Copyright (c) 2009 Intel Corporation 4d44d1f3bSRichard Röjfors * 5d44d1f3bSRichard Röjfors * This program is free software; you can redistribute it and/or modify 6d44d1f3bSRichard Röjfors * it under the terms of the GNU General Public License version 2 as 7d44d1f3bSRichard Röjfors * published by the Free Software Foundation. 8d44d1f3bSRichard Röjfors * 9d44d1f3bSRichard Röjfors * This program is distributed in the hope that it will be useful, 10d44d1f3bSRichard Röjfors * but WITHOUT ANY WARRANTY; without even the implied warranty of 11d44d1f3bSRichard Röjfors * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 12d44d1f3bSRichard Röjfors * GNU General Public License for more details. 13d44d1f3bSRichard Röjfors */ 14d44d1f3bSRichard Röjfors 15d44d1f3bSRichard Röjfors #include <linux/io.h> 16d44d1f3bSRichard Röjfors #include <media/v4l2-ioctl.h> 17d44d1f3bSRichard Röjfors #include <media/v4l2-device.h> 1846821b1dSHans Verkuil #include <media/v4l2-ctrls.h> 1946821b1dSHans Verkuil #include <media/v4l2-event.h> 20d44d1f3bSRichard Röjfors #include <linux/platform_device.h> 21d44d1f3bSRichard Röjfors #include <linux/interrupt.h> 225a0e3ad6STejun Heo #include <linux/slab.h> 23d44d1f3bSRichard Röjfors #include <linux/i2c.h> 247a707b89SPaul Gortmaker #include <linux/module.h> 25eb4b0ec7SMauro Carvalho Chehab #include <linux/platform_data/media/timb_radio.h> 26d44d1f3bSRichard Röjfors 27d44d1f3bSRichard Röjfors #define DRIVER_NAME "timb-radio" 28d44d1f3bSRichard Röjfors 29d44d1f3bSRichard Röjfors struct timbradio { 30d44d1f3bSRichard Röjfors struct timb_radio_platform_data pdata; 31d44d1f3bSRichard Röjfors struct v4l2_subdev *sd_tuner; 32d44d1f3bSRichard Röjfors struct v4l2_subdev *sd_dsp; 33d44d1f3bSRichard Röjfors struct video_device video_dev; 34d44d1f3bSRichard Röjfors struct v4l2_device v4l2_dev; 354f68775bSHans Verkuil struct mutex lock; 36d44d1f3bSRichard Röjfors }; 37d44d1f3bSRichard Röjfors 38d44d1f3bSRichard Röjfors 39d44d1f3bSRichard Röjfors static int timbradio_vidioc_querycap(struct file *file, void *priv, 40d44d1f3bSRichard Röjfors struct v4l2_capability *v) 41d44d1f3bSRichard Röjfors { 42c0decac1SMauro Carvalho Chehab strscpy(v->driver, DRIVER_NAME, sizeof(v->driver)); 43c0decac1SMauro Carvalho Chehab strscpy(v->card, "Timberdale Radio", sizeof(v->card)); 44d44d1f3bSRichard Röjfors snprintf(v->bus_info, sizeof(v->bus_info), "platform:"DRIVER_NAME); 45d44d1f3bSRichard Röjfors return 0; 46d44d1f3bSRichard Röjfors } 47d44d1f3bSRichard Röjfors 48d44d1f3bSRichard Röjfors static int timbradio_vidioc_g_tuner(struct file *file, void *priv, 49d44d1f3bSRichard Röjfors struct v4l2_tuner *v) 50d44d1f3bSRichard Röjfors { 51d44d1f3bSRichard Röjfors struct timbradio *tr = video_drvdata(file); 52d44d1f3bSRichard Röjfors return v4l2_subdev_call(tr->sd_tuner, tuner, g_tuner, v); 53d44d1f3bSRichard Röjfors } 54d44d1f3bSRichard Röjfors 55d44d1f3bSRichard Röjfors static int timbradio_vidioc_s_tuner(struct file *file, void *priv, 562f73c7c5SHans Verkuil const struct v4l2_tuner *v) 57d44d1f3bSRichard Röjfors { 58d44d1f3bSRichard Röjfors struct timbradio *tr = video_drvdata(file); 59d44d1f3bSRichard Röjfors return v4l2_subdev_call(tr->sd_tuner, tuner, s_tuner, v); 60d44d1f3bSRichard Röjfors } 61d44d1f3bSRichard Röjfors 62d44d1f3bSRichard Röjfors static int timbradio_vidioc_s_frequency(struct file *file, void *priv, 63b530a447SHans Verkuil const struct v4l2_frequency *f) 64d44d1f3bSRichard Röjfors { 65d44d1f3bSRichard Röjfors struct timbradio *tr = video_drvdata(file); 66d44d1f3bSRichard Röjfors return v4l2_subdev_call(tr->sd_tuner, tuner, s_frequency, f); 67d44d1f3bSRichard Röjfors } 68d44d1f3bSRichard Röjfors 69d44d1f3bSRichard Röjfors static int timbradio_vidioc_g_frequency(struct file *file, void *priv, 70d44d1f3bSRichard Röjfors struct v4l2_frequency *f) 71d44d1f3bSRichard Röjfors { 72d44d1f3bSRichard Röjfors struct timbradio *tr = video_drvdata(file); 73d44d1f3bSRichard Röjfors return v4l2_subdev_call(tr->sd_tuner, tuner, g_frequency, f); 74d44d1f3bSRichard Röjfors } 75d44d1f3bSRichard Röjfors 76d44d1f3bSRichard Röjfors static const struct v4l2_ioctl_ops timbradio_ioctl_ops = { 77d44d1f3bSRichard Röjfors .vidioc_querycap = timbradio_vidioc_querycap, 78d44d1f3bSRichard Röjfors .vidioc_g_tuner = timbradio_vidioc_g_tuner, 79d44d1f3bSRichard Röjfors .vidioc_s_tuner = timbradio_vidioc_s_tuner, 80d44d1f3bSRichard Röjfors .vidioc_g_frequency = timbradio_vidioc_g_frequency, 81d44d1f3bSRichard Röjfors .vidioc_s_frequency = timbradio_vidioc_s_frequency, 8246821b1dSHans Verkuil .vidioc_log_status = v4l2_ctrl_log_status, 8346821b1dSHans Verkuil .vidioc_subscribe_event = v4l2_ctrl_subscribe_event, 8446821b1dSHans Verkuil .vidioc_unsubscribe_event = v4l2_event_unsubscribe, 85d44d1f3bSRichard Röjfors }; 86d44d1f3bSRichard Röjfors 87d44d1f3bSRichard Röjfors static const struct v4l2_file_operations timbradio_fops = { 88d44d1f3bSRichard Röjfors .owner = THIS_MODULE, 8946821b1dSHans Verkuil .open = v4l2_fh_open, 9046821b1dSHans Verkuil .release = v4l2_fh_release, 9146821b1dSHans Verkuil .poll = v4l2_ctrl_poll, 924f68775bSHans Verkuil .unlocked_ioctl = video_ioctl2, 93d44d1f3bSRichard Röjfors }; 94d44d1f3bSRichard Röjfors 954c62e976SGreg Kroah-Hartman static int timbradio_probe(struct platform_device *pdev) 96d44d1f3bSRichard Röjfors { 973271d382SSamuel Ortiz struct timb_radio_platform_data *pdata = pdev->dev.platform_data; 98d44d1f3bSRichard Röjfors struct timbradio *tr; 99d44d1f3bSRichard Röjfors int err; 100d44d1f3bSRichard Röjfors 101d44d1f3bSRichard Röjfors if (!pdata) { 102d44d1f3bSRichard Röjfors dev_err(&pdev->dev, "Platform data missing\n"); 103d44d1f3bSRichard Röjfors err = -EINVAL; 104d44d1f3bSRichard Röjfors goto err; 105d44d1f3bSRichard Röjfors } 106d44d1f3bSRichard Röjfors 1072f20c490SJulia Lawall tr = devm_kzalloc(&pdev->dev, sizeof(*tr), GFP_KERNEL); 108d44d1f3bSRichard Röjfors if (!tr) { 109d44d1f3bSRichard Röjfors err = -ENOMEM; 110d44d1f3bSRichard Röjfors goto err; 111d44d1f3bSRichard Röjfors } 112d44d1f3bSRichard Röjfors 113d44d1f3bSRichard Röjfors tr->pdata = *pdata; 1144f68775bSHans Verkuil mutex_init(&tr->lock); 115d44d1f3bSRichard Röjfors 116c0decac1SMauro Carvalho Chehab strscpy(tr->video_dev.name, "Timberdale Radio", 117d44d1f3bSRichard Röjfors sizeof(tr->video_dev.name)); 118d44d1f3bSRichard Röjfors tr->video_dev.fops = &timbradio_fops; 119d44d1f3bSRichard Röjfors tr->video_dev.ioctl_ops = &timbradio_ioctl_ops; 120d44d1f3bSRichard Röjfors tr->video_dev.release = video_device_release_empty; 121d44d1f3bSRichard Röjfors tr->video_dev.minor = -1; 1224f68775bSHans Verkuil tr->video_dev.lock = &tr->lock; 123e83ce300SHans Verkuil tr->video_dev.device_caps = V4L2_CAP_TUNER | V4L2_CAP_RADIO; 124d44d1f3bSRichard Röjfors 125c0decac1SMauro Carvalho Chehab strscpy(tr->v4l2_dev.name, DRIVER_NAME, sizeof(tr->v4l2_dev.name)); 126d44d1f3bSRichard Röjfors err = v4l2_device_register(NULL, &tr->v4l2_dev); 127d44d1f3bSRichard Röjfors if (err) 1282f20c490SJulia Lawall goto err; 129d44d1f3bSRichard Röjfors 130d44d1f3bSRichard Röjfors tr->video_dev.v4l2_dev = &tr->v4l2_dev; 131d44d1f3bSRichard Röjfors 1325bd8d2abSHans Verkuil tr->sd_tuner = v4l2_i2c_new_subdev_board(&tr->v4l2_dev, 1335bd8d2abSHans Verkuil i2c_get_adapter(pdata->i2c_adapter), pdata->tuner, NULL); 1345bd8d2abSHans Verkuil tr->sd_dsp = v4l2_i2c_new_subdev_board(&tr->v4l2_dev, 1355bd8d2abSHans Verkuil i2c_get_adapter(pdata->i2c_adapter), pdata->dsp, NULL); 13644b0c738SJulia Lawall if (tr->sd_tuner == NULL || tr->sd_dsp == NULL) { 13744b0c738SJulia Lawall err = -ENODEV; 1385bd8d2abSHans Verkuil goto err_video_req; 13944b0c738SJulia Lawall } 1405bd8d2abSHans Verkuil 1415bd8d2abSHans Verkuil tr->v4l2_dev.ctrl_handler = tr->sd_dsp->ctrl_handler; 1425bd8d2abSHans Verkuil 143d44d1f3bSRichard Röjfors err = video_register_device(&tr->video_dev, VFL_TYPE_RADIO, -1); 144d44d1f3bSRichard Röjfors if (err) { 145d44d1f3bSRichard Röjfors dev_err(&pdev->dev, "Error reg video\n"); 146d44d1f3bSRichard Röjfors goto err_video_req; 147d44d1f3bSRichard Röjfors } 148d44d1f3bSRichard Röjfors 149d44d1f3bSRichard Röjfors video_set_drvdata(&tr->video_dev, tr); 150d44d1f3bSRichard Röjfors 151d44d1f3bSRichard Röjfors platform_set_drvdata(pdev, tr); 152d44d1f3bSRichard Röjfors return 0; 153d44d1f3bSRichard Röjfors 154d44d1f3bSRichard Röjfors err_video_req: 155d44d1f3bSRichard Röjfors v4l2_device_unregister(&tr->v4l2_dev); 156d44d1f3bSRichard Röjfors err: 157d44d1f3bSRichard Röjfors dev_err(&pdev->dev, "Failed to register: %d\n", err); 158d44d1f3bSRichard Röjfors 159d44d1f3bSRichard Röjfors return err; 160d44d1f3bSRichard Röjfors } 161d44d1f3bSRichard Röjfors 1624c62e976SGreg Kroah-Hartman static int timbradio_remove(struct platform_device *pdev) 163d44d1f3bSRichard Röjfors { 164d44d1f3bSRichard Röjfors struct timbradio *tr = platform_get_drvdata(pdev); 165d44d1f3bSRichard Röjfors 166d44d1f3bSRichard Röjfors video_unregister_device(&tr->video_dev); 167d44d1f3bSRichard Röjfors v4l2_device_unregister(&tr->v4l2_dev); 168d44d1f3bSRichard Röjfors return 0; 169d44d1f3bSRichard Röjfors } 170d44d1f3bSRichard Röjfors 171d44d1f3bSRichard Röjfors static struct platform_driver timbradio_platform_driver = { 172d44d1f3bSRichard Röjfors .driver = { 173d44d1f3bSRichard Röjfors .name = DRIVER_NAME, 174d44d1f3bSRichard Röjfors }, 175d44d1f3bSRichard Röjfors .probe = timbradio_probe, 1764c62e976SGreg Kroah-Hartman .remove = timbradio_remove, 177d44d1f3bSRichard Röjfors }; 178d44d1f3bSRichard Röjfors 1791d6629b1SAxel Lin module_platform_driver(timbradio_platform_driver); 180d44d1f3bSRichard Röjfors 181d44d1f3bSRichard Röjfors MODULE_DESCRIPTION("Timberdale Radio driver"); 182d44d1f3bSRichard Röjfors MODULE_AUTHOR("Mocean Laboratories <info@mocean-labs.com>"); 183d44d1f3bSRichard Röjfors MODULE_LICENSE("GPL v2"); 18429834c1aSMauro Carvalho Chehab MODULE_VERSION("0.0.2"); 185d44d1f3bSRichard Röjfors MODULE_ALIAS("platform:"DRIVER_NAME); 186