[media] wl128x: Remove unused NO_OF_ENTRIES_IN_ARRAY macro
[linux-2.6.git] / drivers / media / radio / radio-timb.c
1 /*
2  * radio-timb.c Timberdale FPGA Radio driver
3  * Copyright (c) 2009 Intel Corporation
4  *
5  * This program is free software; you can redistribute it and/or modify
6  * it under the terms of the GNU General Public License version 2 as
7  * published by the Free Software Foundation.
8  *
9  * This program is distributed in the hope that it will be useful,
10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
12  * GNU General Public License for more details.
13  *
14  * You should have received a copy of the GNU General Public License
15  * along with this program; if not, write to the Free Software
16  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
17  */
18
19 #include <linux/version.h>
20 #include <linux/io.h>
21 #include <media/v4l2-ioctl.h>
22 #include <media/v4l2-device.h>
23 #include <linux/platform_device.h>
24 #include <linux/mfd/core.h>
25 #include <linux/interrupt.h>
26 #include <linux/slab.h>
27 #include <linux/i2c.h>
28 #include <media/timb_radio.h>
29
30 #define DRIVER_NAME "timb-radio"
31
32 struct timbradio {
33         struct timb_radio_platform_data pdata;
34         struct v4l2_subdev      *sd_tuner;
35         struct v4l2_subdev      *sd_dsp;
36         struct video_device     video_dev;
37         struct v4l2_device      v4l2_dev;
38         struct mutex            lock;
39 };
40
41
42 static int timbradio_vidioc_querycap(struct file *file, void  *priv,
43         struct v4l2_capability *v)
44 {
45         strlcpy(v->driver, DRIVER_NAME, sizeof(v->driver));
46         strlcpy(v->card, "Timberdale Radio", sizeof(v->card));
47         snprintf(v->bus_info, sizeof(v->bus_info), "platform:"DRIVER_NAME);
48         v->version = KERNEL_VERSION(0, 0, 1);
49         v->capabilities = V4L2_CAP_TUNER | V4L2_CAP_RADIO;
50         return 0;
51 }
52
53 static int timbradio_vidioc_g_tuner(struct file *file, void *priv,
54         struct v4l2_tuner *v)
55 {
56         struct timbradio *tr = video_drvdata(file);
57         return v4l2_subdev_call(tr->sd_tuner, tuner, g_tuner, v);
58 }
59
60 static int timbradio_vidioc_s_tuner(struct file *file, void *priv,
61         struct v4l2_tuner *v)
62 {
63         struct timbradio *tr = video_drvdata(file);
64         return v4l2_subdev_call(tr->sd_tuner, tuner, s_tuner, v);
65 }
66
67 static int timbradio_vidioc_g_input(struct file *filp, void *priv,
68         unsigned int *i)
69 {
70         *i = 0;
71         return 0;
72 }
73
74 static int timbradio_vidioc_s_input(struct file *filp, void *priv,
75         unsigned int i)
76 {
77         return i ? -EINVAL : 0;
78 }
79
80 static int timbradio_vidioc_g_audio(struct file *file, void *priv,
81         struct v4l2_audio *a)
82 {
83         a->index = 0;
84         strlcpy(a->name, "Radio", sizeof(a->name));
85         a->capability = V4L2_AUDCAP_STEREO;
86         return 0;
87 }
88
89 static int timbradio_vidioc_s_audio(struct file *file, void *priv,
90         struct v4l2_audio *a)
91 {
92         return a->index ? -EINVAL : 0;
93 }
94
95 static int timbradio_vidioc_s_frequency(struct file *file, void *priv,
96         struct v4l2_frequency *f)
97 {
98         struct timbradio *tr = video_drvdata(file);
99         return v4l2_subdev_call(tr->sd_tuner, tuner, s_frequency, f);
100 }
101
102 static int timbradio_vidioc_g_frequency(struct file *file, void *priv,
103         struct v4l2_frequency *f)
104 {
105         struct timbradio *tr = video_drvdata(file);
106         return v4l2_subdev_call(tr->sd_tuner, tuner, g_frequency, f);
107 }
108
109 static int timbradio_vidioc_queryctrl(struct file *file, void *priv,
110         struct v4l2_queryctrl *qc)
111 {
112         struct timbradio *tr = video_drvdata(file);
113         return v4l2_subdev_call(tr->sd_dsp, core, queryctrl, qc);
114 }
115
116 static int timbradio_vidioc_g_ctrl(struct file *file, void *priv,
117         struct v4l2_control *ctrl)
118 {
119         struct timbradio *tr = video_drvdata(file);
120         return v4l2_subdev_call(tr->sd_dsp, core, g_ctrl, ctrl);
121 }
122
123 static int timbradio_vidioc_s_ctrl(struct file *file, void *priv,
124         struct v4l2_control *ctrl)
125 {
126         struct timbradio *tr = video_drvdata(file);
127         return v4l2_subdev_call(tr->sd_dsp, core, s_ctrl, ctrl);
128 }
129
130 static const struct v4l2_ioctl_ops timbradio_ioctl_ops = {
131         .vidioc_querycap        = timbradio_vidioc_querycap,
132         .vidioc_g_tuner         = timbradio_vidioc_g_tuner,
133         .vidioc_s_tuner         = timbradio_vidioc_s_tuner,
134         .vidioc_g_frequency     = timbradio_vidioc_g_frequency,
135         .vidioc_s_frequency     = timbradio_vidioc_s_frequency,
136         .vidioc_g_input         = timbradio_vidioc_g_input,
137         .vidioc_s_input         = timbradio_vidioc_s_input,
138         .vidioc_g_audio         = timbradio_vidioc_g_audio,
139         .vidioc_s_audio         = timbradio_vidioc_s_audio,
140         .vidioc_queryctrl       = timbradio_vidioc_queryctrl,
141         .vidioc_g_ctrl          = timbradio_vidioc_g_ctrl,
142         .vidioc_s_ctrl          = timbradio_vidioc_s_ctrl
143 };
144
145 static const struct v4l2_file_operations timbradio_fops = {
146         .owner          = THIS_MODULE,
147         .unlocked_ioctl = video_ioctl2,
148 };
149
150 static int __devinit timbradio_probe(struct platform_device *pdev)
151 {
152         struct timb_radio_platform_data *pdata = mfd_get_data(pdev);
153         struct timbradio *tr;
154         int err;
155
156         if (!pdata) {
157                 dev_err(&pdev->dev, "Platform data missing\n");
158                 err = -EINVAL;
159                 goto err;
160         }
161
162         tr = kzalloc(sizeof(*tr), GFP_KERNEL);
163         if (!tr) {
164                 err = -ENOMEM;
165                 goto err;
166         }
167
168         tr->pdata = *pdata;
169         mutex_init(&tr->lock);
170
171         strlcpy(tr->video_dev.name, "Timberdale Radio",
172                 sizeof(tr->video_dev.name));
173         tr->video_dev.fops = &timbradio_fops;
174         tr->video_dev.ioctl_ops = &timbradio_ioctl_ops;
175         tr->video_dev.release = video_device_release_empty;
176         tr->video_dev.minor = -1;
177         tr->video_dev.lock = &tr->lock;
178
179         strlcpy(tr->v4l2_dev.name, DRIVER_NAME, sizeof(tr->v4l2_dev.name));
180         err = v4l2_device_register(NULL, &tr->v4l2_dev);
181         if (err)
182                 goto err_v4l2_dev;
183
184         tr->video_dev.v4l2_dev = &tr->v4l2_dev;
185
186         err = video_register_device(&tr->video_dev, VFL_TYPE_RADIO, -1);
187         if (err) {
188                 dev_err(&pdev->dev, "Error reg video\n");
189                 goto err_video_req;
190         }
191
192         video_set_drvdata(&tr->video_dev, tr);
193
194         platform_set_drvdata(pdev, tr);
195         return 0;
196
197 err_video_req:
198         video_device_release_empty(&tr->video_dev);
199         v4l2_device_unregister(&tr->v4l2_dev);
200 err_v4l2_dev:
201         kfree(tr);
202 err:
203         dev_err(&pdev->dev, "Failed to register: %d\n", err);
204
205         return err;
206 }
207
208 static int __devexit timbradio_remove(struct platform_device *pdev)
209 {
210         struct timbradio *tr = platform_get_drvdata(pdev);
211
212         video_unregister_device(&tr->video_dev);
213         video_device_release_empty(&tr->video_dev);
214
215         v4l2_device_unregister(&tr->v4l2_dev);
216
217         kfree(tr);
218
219         return 0;
220 }
221
222 static struct platform_driver timbradio_platform_driver = {
223         .driver = {
224                 .name   = DRIVER_NAME,
225                 .owner  = THIS_MODULE,
226         },
227         .probe          = timbradio_probe,
228         .remove         = timbradio_remove,
229 };
230
231 /*--------------------------------------------------------------------------*/
232
233 static int __init timbradio_init(void)
234 {
235         return platform_driver_register(&timbradio_platform_driver);
236 }
237
238 static void __exit timbradio_exit(void)
239 {
240         platform_driver_unregister(&timbradio_platform_driver);
241 }
242
243 module_init(timbradio_init);
244 module_exit(timbradio_exit);
245
246 MODULE_DESCRIPTION("Timberdale Radio driver");
247 MODULE_AUTHOR("Mocean Laboratories <info@mocean-labs.com>");
248 MODULE_LICENSE("GPL v2");
249 MODULE_ALIAS("platform:"DRIVER_NAME);