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 | ||
d44d1f3b RR |
19 | #include <linux/io.h> |
20 | #include <media/v4l2-ioctl.h> | |
21 | #include <media/v4l2-device.h> | |
46821b1d HV |
22 | #include <media/v4l2-ctrls.h> |
23 | #include <media/v4l2-event.h> | |
d44d1f3b RR |
24 | #include <linux/platform_device.h> |
25 | #include <linux/interrupt.h> | |
5a0e3ad6 | 26 | #include <linux/slab.h> |
d44d1f3b | 27 | #include <linux/i2c.h> |
7a707b89 | 28 | #include <linux/module.h> |
d44d1f3b RR |
29 | #include <media/timb_radio.h> |
30 | ||
31 | #define DRIVER_NAME "timb-radio" | |
32 | ||
33 | struct timbradio { | |
34 | struct timb_radio_platform_data pdata; | |
35 | struct v4l2_subdev *sd_tuner; | |
36 | struct v4l2_subdev *sd_dsp; | |
37 | struct video_device video_dev; | |
38 | struct v4l2_device v4l2_dev; | |
4f68775b | 39 | struct mutex lock; |
d44d1f3b RR |
40 | }; |
41 | ||
42 | ||
43 | static int timbradio_vidioc_querycap(struct file *file, void *priv, | |
44 | struct v4l2_capability *v) | |
45 | { | |
46 | strlcpy(v->driver, DRIVER_NAME, sizeof(v->driver)); | |
47 | strlcpy(v->card, "Timberdale Radio", sizeof(v->card)); | |
48 | snprintf(v->bus_info, sizeof(v->bus_info), "platform:"DRIVER_NAME); | |
d020f839 HV |
49 | v->device_caps = V4L2_CAP_TUNER | V4L2_CAP_RADIO; |
50 | v->capabilities = v->device_caps | V4L2_CAP_DEVICE_CAPS; | |
d44d1f3b RR |
51 | return 0; |
52 | } | |
53 | ||
54 | static int timbradio_vidioc_g_tuner(struct file *file, void *priv, | |
55 | struct v4l2_tuner *v) | |
56 | { | |
57 | struct timbradio *tr = video_drvdata(file); | |
58 | return v4l2_subdev_call(tr->sd_tuner, tuner, g_tuner, v); | |
59 | } | |
60 | ||
61 | static int timbradio_vidioc_s_tuner(struct file *file, void *priv, | |
2f73c7c5 | 62 | const struct v4l2_tuner *v) |
d44d1f3b RR |
63 | { |
64 | struct timbradio *tr = video_drvdata(file); | |
65 | return v4l2_subdev_call(tr->sd_tuner, tuner, s_tuner, v); | |
66 | } | |
67 | ||
d44d1f3b | 68 | static int timbradio_vidioc_s_frequency(struct file *file, void *priv, |
b530a447 | 69 | const struct v4l2_frequency *f) |
d44d1f3b RR |
70 | { |
71 | struct timbradio *tr = video_drvdata(file); | |
72 | return v4l2_subdev_call(tr->sd_tuner, tuner, s_frequency, f); | |
73 | } | |
74 | ||
75 | static int timbradio_vidioc_g_frequency(struct file *file, void *priv, | |
76 | struct v4l2_frequency *f) | |
77 | { | |
78 | struct timbradio *tr = video_drvdata(file); | |
79 | return v4l2_subdev_call(tr->sd_tuner, tuner, g_frequency, f); | |
80 | } | |
81 | ||
d44d1f3b RR |
82 | static const struct v4l2_ioctl_ops timbradio_ioctl_ops = { |
83 | .vidioc_querycap = timbradio_vidioc_querycap, | |
84 | .vidioc_g_tuner = timbradio_vidioc_g_tuner, | |
85 | .vidioc_s_tuner = timbradio_vidioc_s_tuner, | |
86 | .vidioc_g_frequency = timbradio_vidioc_g_frequency, | |
87 | .vidioc_s_frequency = timbradio_vidioc_s_frequency, | |
46821b1d HV |
88 | .vidioc_log_status = v4l2_ctrl_log_status, |
89 | .vidioc_subscribe_event = v4l2_ctrl_subscribe_event, | |
90 | .vidioc_unsubscribe_event = v4l2_event_unsubscribe, | |
d44d1f3b RR |
91 | }; |
92 | ||
93 | static const struct v4l2_file_operations timbradio_fops = { | |
94 | .owner = THIS_MODULE, | |
46821b1d HV |
95 | .open = v4l2_fh_open, |
96 | .release = v4l2_fh_release, | |
97 | .poll = v4l2_ctrl_poll, | |
4f68775b | 98 | .unlocked_ioctl = video_ioctl2, |
d44d1f3b RR |
99 | }; |
100 | ||
4c62e976 | 101 | static int timbradio_probe(struct platform_device *pdev) |
d44d1f3b | 102 | { |
3271d382 | 103 | struct timb_radio_platform_data *pdata = pdev->dev.platform_data; |
d44d1f3b RR |
104 | struct timbradio *tr; |
105 | int err; | |
106 | ||
107 | if (!pdata) { | |
108 | dev_err(&pdev->dev, "Platform data missing\n"); | |
109 | err = -EINVAL; | |
110 | goto err; | |
111 | } | |
112 | ||
2f20c490 | 113 | tr = devm_kzalloc(&pdev->dev, sizeof(*tr), GFP_KERNEL); |
d44d1f3b RR |
114 | if (!tr) { |
115 | err = -ENOMEM; | |
116 | goto err; | |
117 | } | |
118 | ||
119 | tr->pdata = *pdata; | |
4f68775b | 120 | mutex_init(&tr->lock); |
d44d1f3b RR |
121 | |
122 | strlcpy(tr->video_dev.name, "Timberdale Radio", | |
123 | sizeof(tr->video_dev.name)); | |
124 | tr->video_dev.fops = &timbradio_fops; | |
125 | tr->video_dev.ioctl_ops = &timbradio_ioctl_ops; | |
126 | tr->video_dev.release = video_device_release_empty; | |
127 | tr->video_dev.minor = -1; | |
4f68775b | 128 | tr->video_dev.lock = &tr->lock; |
d44d1f3b RR |
129 | |
130 | strlcpy(tr->v4l2_dev.name, DRIVER_NAME, sizeof(tr->v4l2_dev.name)); | |
131 | err = v4l2_device_register(NULL, &tr->v4l2_dev); | |
132 | if (err) | |
2f20c490 | 133 | goto err; |
d44d1f3b RR |
134 | |
135 | tr->video_dev.v4l2_dev = &tr->v4l2_dev; | |
136 | ||
5bd8d2ab HV |
137 | tr->sd_tuner = v4l2_i2c_new_subdev_board(&tr->v4l2_dev, |
138 | i2c_get_adapter(pdata->i2c_adapter), pdata->tuner, NULL); | |
139 | tr->sd_dsp = v4l2_i2c_new_subdev_board(&tr->v4l2_dev, | |
140 | i2c_get_adapter(pdata->i2c_adapter), pdata->dsp, NULL); | |
141 | if (tr->sd_tuner == NULL || tr->sd_dsp == NULL) | |
142 | goto err_video_req; | |
143 | ||
144 | tr->v4l2_dev.ctrl_handler = tr->sd_dsp->ctrl_handler; | |
145 | ||
d44d1f3b RR |
146 | err = video_register_device(&tr->video_dev, VFL_TYPE_RADIO, -1); |
147 | if (err) { | |
148 | dev_err(&pdev->dev, "Error reg video\n"); | |
149 | goto err_video_req; | |
150 | } | |
151 | ||
152 | video_set_drvdata(&tr->video_dev, tr); | |
153 | ||
154 | platform_set_drvdata(pdev, tr); | |
155 | return 0; | |
156 | ||
157 | err_video_req: | |
d44d1f3b | 158 | v4l2_device_unregister(&tr->v4l2_dev); |
d44d1f3b RR |
159 | err: |
160 | dev_err(&pdev->dev, "Failed to register: %d\n", err); | |
161 | ||
162 | return err; | |
163 | } | |
164 | ||
4c62e976 | 165 | static int timbradio_remove(struct platform_device *pdev) |
d44d1f3b RR |
166 | { |
167 | struct timbradio *tr = platform_get_drvdata(pdev); | |
168 | ||
169 | video_unregister_device(&tr->video_dev); | |
d44d1f3b | 170 | v4l2_device_unregister(&tr->v4l2_dev); |
d44d1f3b RR |
171 | return 0; |
172 | } | |
173 | ||
174 | static struct platform_driver timbradio_platform_driver = { | |
175 | .driver = { | |
176 | .name = DRIVER_NAME, | |
d44d1f3b RR |
177 | }, |
178 | .probe = timbradio_probe, | |
4c62e976 | 179 | .remove = timbradio_remove, |
d44d1f3b RR |
180 | }; |
181 | ||
1d6629b1 | 182 | module_platform_driver(timbradio_platform_driver); |
d44d1f3b RR |
183 | |
184 | MODULE_DESCRIPTION("Timberdale Radio driver"); | |
185 | MODULE_AUTHOR("Mocean Laboratories <info@mocean-labs.com>"); | |
186 | MODULE_LICENSE("GPL v2"); | |
29834c1a | 187 | MODULE_VERSION("0.0.2"); |
d44d1f3b | 188 | MODULE_ALIAS("platform:"DRIVER_NAME); |