Commit | Line | Data |
---|---|---|
d44d1f3b RR |
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/interrupt.h> | |
25 | #include <linux/i2c.h> | |
26 | #include <media/timb_radio.h> | |
27 | ||
28 | #define DRIVER_NAME "timb-radio" | |
29 | ||
30 | struct timbradio { | |
31 | struct timb_radio_platform_data pdata; | |
32 | struct v4l2_subdev *sd_tuner; | |
33 | struct v4l2_subdev *sd_dsp; | |
34 | struct video_device video_dev; | |
35 | struct v4l2_device v4l2_dev; | |
36 | }; | |
37 | ||
38 | ||
39 | static int timbradio_vidioc_querycap(struct file *file, void *priv, | |
40 | struct v4l2_capability *v) | |
41 | { | |
42 | strlcpy(v->driver, DRIVER_NAME, sizeof(v->driver)); | |
43 | strlcpy(v->card, "Timberdale Radio", sizeof(v->card)); | |
44 | snprintf(v->bus_info, sizeof(v->bus_info), "platform:"DRIVER_NAME); | |
45 | v->version = KERNEL_VERSION(0, 0, 1); | |
46 | v->capabilities = V4L2_CAP_TUNER | V4L2_CAP_RADIO; | |
47 | return 0; | |
48 | } | |
49 | ||
50 | static int timbradio_vidioc_g_tuner(struct file *file, void *priv, | |
51 | struct v4l2_tuner *v) | |
52 | { | |
53 | struct timbradio *tr = video_drvdata(file); | |
54 | return v4l2_subdev_call(tr->sd_tuner, tuner, g_tuner, v); | |
55 | } | |
56 | ||
57 | static int timbradio_vidioc_s_tuner(struct file *file, void *priv, | |
58 | struct v4l2_tuner *v) | |
59 | { | |
60 | struct timbradio *tr = video_drvdata(file); | |
61 | return v4l2_subdev_call(tr->sd_tuner, tuner, s_tuner, v); | |
62 | } | |
63 | ||
64 | static int timbradio_vidioc_g_input(struct file *filp, void *priv, | |
65 | unsigned int *i) | |
66 | { | |
67 | *i = 0; | |
68 | return 0; | |
69 | } | |
70 | ||
71 | static int timbradio_vidioc_s_input(struct file *filp, void *priv, | |
72 | unsigned int i) | |
73 | { | |
74 | return i ? -EINVAL : 0; | |
75 | } | |
76 | ||
77 | static int timbradio_vidioc_g_audio(struct file *file, void *priv, | |
78 | struct v4l2_audio *a) | |
79 | { | |
80 | a->index = 0; | |
81 | strlcpy(a->name, "Radio", sizeof(a->name)); | |
82 | a->capability = V4L2_AUDCAP_STEREO; | |
83 | return 0; | |
84 | } | |
85 | ||
86 | static int timbradio_vidioc_s_audio(struct file *file, void *priv, | |
87 | struct v4l2_audio *a) | |
88 | { | |
89 | return a->index ? -EINVAL : 0; | |
90 | } | |
91 | ||
92 | static int timbradio_vidioc_s_frequency(struct file *file, void *priv, | |
93 | struct v4l2_frequency *f) | |
94 | { | |
95 | struct timbradio *tr = video_drvdata(file); | |
96 | return v4l2_subdev_call(tr->sd_tuner, tuner, s_frequency, f); | |
97 | } | |
98 | ||
99 | static int timbradio_vidioc_g_frequency(struct file *file, void *priv, | |
100 | struct v4l2_frequency *f) | |
101 | { | |
102 | struct timbradio *tr = video_drvdata(file); | |
103 | return v4l2_subdev_call(tr->sd_tuner, tuner, g_frequency, f); | |
104 | } | |
105 | ||
106 | static int timbradio_vidioc_queryctrl(struct file *file, void *priv, | |
107 | struct v4l2_queryctrl *qc) | |
108 | { | |
109 | struct timbradio *tr = video_drvdata(file); | |
110 | return v4l2_subdev_call(tr->sd_dsp, core, queryctrl, qc); | |
111 | } | |
112 | ||
113 | static int timbradio_vidioc_g_ctrl(struct file *file, void *priv, | |
114 | struct v4l2_control *ctrl) | |
115 | { | |
116 | struct timbradio *tr = video_drvdata(file); | |
117 | return v4l2_subdev_call(tr->sd_dsp, core, g_ctrl, ctrl); | |
118 | } | |
119 | ||
120 | static int timbradio_vidioc_s_ctrl(struct file *file, void *priv, | |
121 | struct v4l2_control *ctrl) | |
122 | { | |
123 | struct timbradio *tr = video_drvdata(file); | |
124 | return v4l2_subdev_call(tr->sd_dsp, core, s_ctrl, ctrl); | |
125 | } | |
126 | ||
127 | static const struct v4l2_ioctl_ops timbradio_ioctl_ops = { | |
128 | .vidioc_querycap = timbradio_vidioc_querycap, | |
129 | .vidioc_g_tuner = timbradio_vidioc_g_tuner, | |
130 | .vidioc_s_tuner = timbradio_vidioc_s_tuner, | |
131 | .vidioc_g_frequency = timbradio_vidioc_g_frequency, | |
132 | .vidioc_s_frequency = timbradio_vidioc_s_frequency, | |
133 | .vidioc_g_input = timbradio_vidioc_g_input, | |
134 | .vidioc_s_input = timbradio_vidioc_s_input, | |
135 | .vidioc_g_audio = timbradio_vidioc_g_audio, | |
136 | .vidioc_s_audio = timbradio_vidioc_s_audio, | |
137 | .vidioc_queryctrl = timbradio_vidioc_queryctrl, | |
138 | .vidioc_g_ctrl = timbradio_vidioc_g_ctrl, | |
139 | .vidioc_s_ctrl = timbradio_vidioc_s_ctrl | |
140 | }; | |
141 | ||
142 | static const struct v4l2_file_operations timbradio_fops = { | |
143 | .owner = THIS_MODULE, | |
144 | .ioctl = video_ioctl2, | |
145 | }; | |
146 | ||
147 | static int __devinit timbradio_probe(struct platform_device *pdev) | |
148 | { | |
149 | struct timb_radio_platform_data *pdata = pdev->dev.platform_data; | |
150 | struct timbradio *tr; | |
151 | int err; | |
152 | ||
153 | if (!pdata) { | |
154 | dev_err(&pdev->dev, "Platform data missing\n"); | |
155 | err = -EINVAL; | |
156 | goto err; | |
157 | } | |
158 | ||
159 | tr = kzalloc(sizeof(*tr), GFP_KERNEL); | |
160 | if (!tr) { | |
161 | err = -ENOMEM; | |
162 | goto err; | |
163 | } | |
164 | ||
165 | tr->pdata = *pdata; | |
166 | ||
167 | strlcpy(tr->video_dev.name, "Timberdale Radio", | |
168 | sizeof(tr->video_dev.name)); | |
169 | tr->video_dev.fops = &timbradio_fops; | |
170 | tr->video_dev.ioctl_ops = &timbradio_ioctl_ops; | |
171 | tr->video_dev.release = video_device_release_empty; | |
172 | tr->video_dev.minor = -1; | |
173 | ||
174 | strlcpy(tr->v4l2_dev.name, DRIVER_NAME, sizeof(tr->v4l2_dev.name)); | |
175 | err = v4l2_device_register(NULL, &tr->v4l2_dev); | |
176 | if (err) | |
177 | goto err_v4l2_dev; | |
178 | ||
179 | tr->video_dev.v4l2_dev = &tr->v4l2_dev; | |
180 | ||
181 | err = video_register_device(&tr->video_dev, VFL_TYPE_RADIO, -1); | |
182 | if (err) { | |
183 | dev_err(&pdev->dev, "Error reg video\n"); | |
184 | goto err_video_req; | |
185 | } | |
186 | ||
187 | video_set_drvdata(&tr->video_dev, tr); | |
188 | ||
189 | platform_set_drvdata(pdev, tr); | |
190 | return 0; | |
191 | ||
192 | err_video_req: | |
193 | video_device_release_empty(&tr->video_dev); | |
194 | v4l2_device_unregister(&tr->v4l2_dev); | |
195 | err_v4l2_dev: | |
196 | kfree(tr); | |
197 | err: | |
198 | dev_err(&pdev->dev, "Failed to register: %d\n", err); | |
199 | ||
200 | return err; | |
201 | } | |
202 | ||
203 | static int __devexit timbradio_remove(struct platform_device *pdev) | |
204 | { | |
205 | struct timbradio *tr = platform_get_drvdata(pdev); | |
206 | ||
207 | video_unregister_device(&tr->video_dev); | |
208 | video_device_release_empty(&tr->video_dev); | |
209 | ||
210 | v4l2_device_unregister(&tr->v4l2_dev); | |
211 | ||
212 | kfree(tr); | |
213 | ||
214 | return 0; | |
215 | } | |
216 | ||
217 | static struct platform_driver timbradio_platform_driver = { | |
218 | .driver = { | |
219 | .name = DRIVER_NAME, | |
220 | .owner = THIS_MODULE, | |
221 | }, | |
222 | .probe = timbradio_probe, | |
223 | .remove = timbradio_remove, | |
224 | }; | |
225 | ||
226 | /*--------------------------------------------------------------------------*/ | |
227 | ||
228 | static int __init timbradio_init(void) | |
229 | { | |
230 | return platform_driver_register(&timbradio_platform_driver); | |
231 | } | |
232 | ||
233 | static void __exit timbradio_exit(void) | |
234 | { | |
235 | platform_driver_unregister(&timbradio_platform_driver); | |
236 | } | |
237 | ||
238 | module_init(timbradio_init); | |
239 | module_exit(timbradio_exit); | |
240 | ||
241 | MODULE_DESCRIPTION("Timberdale Radio driver"); | |
242 | MODULE_AUTHOR("Mocean Laboratories <info@mocean-labs.com>"); | |
243 | MODULE_LICENSE("GPL v2"); | |
244 | MODULE_ALIAS("platform:"DRIVER_NAME); |