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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. | |
d44d1f3b RR |
13 | */ |
14 | ||
d44d1f3b RR |
15 | #include <linux/io.h> |
16 | #include <media/v4l2-ioctl.h> | |
17 | #include <media/v4l2-device.h> | |
46821b1d HV |
18 | #include <media/v4l2-ctrls.h> |
19 | #include <media/v4l2-event.h> | |
d44d1f3b RR |
20 | #include <linux/platform_device.h> |
21 | #include <linux/interrupt.h> | |
5a0e3ad6 | 22 | #include <linux/slab.h> |
d44d1f3b | 23 | #include <linux/i2c.h> |
7a707b89 | 24 | #include <linux/module.h> |
eb4b0ec7 | 25 | #include <linux/platform_data/media/timb_radio.h> |
d44d1f3b RR |
26 | |
27 | #define DRIVER_NAME "timb-radio" | |
28 | ||
29 | struct timbradio { | |
30 | struct timb_radio_platform_data pdata; | |
31 | struct v4l2_subdev *sd_tuner; | |
32 | struct v4l2_subdev *sd_dsp; | |
33 | struct video_device video_dev; | |
34 | struct v4l2_device v4l2_dev; | |
4f68775b | 35 | struct mutex lock; |
d44d1f3b RR |
36 | }; |
37 | ||
38 | ||
39 | static int timbradio_vidioc_querycap(struct file *file, void *priv, | |
40 | struct v4l2_capability *v) | |
41 | { | |
c0decac1 MCC |
42 | strscpy(v->driver, DRIVER_NAME, sizeof(v->driver)); |
43 | strscpy(v->card, "Timberdale Radio", sizeof(v->card)); | |
d44d1f3b | 44 | snprintf(v->bus_info, sizeof(v->bus_info), "platform:"DRIVER_NAME); |
d020f839 HV |
45 | v->device_caps = V4L2_CAP_TUNER | V4L2_CAP_RADIO; |
46 | v->capabilities = v->device_caps | V4L2_CAP_DEVICE_CAPS; | |
d44d1f3b RR |
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, | |
2f73c7c5 | 58 | const struct v4l2_tuner *v) |
d44d1f3b RR |
59 | { |
60 | struct timbradio *tr = video_drvdata(file); | |
61 | return v4l2_subdev_call(tr->sd_tuner, tuner, s_tuner, v); | |
62 | } | |
63 | ||
d44d1f3b | 64 | static int timbradio_vidioc_s_frequency(struct file *file, void *priv, |
b530a447 | 65 | const struct v4l2_frequency *f) |
d44d1f3b RR |
66 | { |
67 | struct timbradio *tr = video_drvdata(file); | |
68 | return v4l2_subdev_call(tr->sd_tuner, tuner, s_frequency, f); | |
69 | } | |
70 | ||
71 | static int timbradio_vidioc_g_frequency(struct file *file, void *priv, | |
72 | struct v4l2_frequency *f) | |
73 | { | |
74 | struct timbradio *tr = video_drvdata(file); | |
75 | return v4l2_subdev_call(tr->sd_tuner, tuner, g_frequency, f); | |
76 | } | |
77 | ||
d44d1f3b RR |
78 | static const struct v4l2_ioctl_ops timbradio_ioctl_ops = { |
79 | .vidioc_querycap = timbradio_vidioc_querycap, | |
80 | .vidioc_g_tuner = timbradio_vidioc_g_tuner, | |
81 | .vidioc_s_tuner = timbradio_vidioc_s_tuner, | |
82 | .vidioc_g_frequency = timbradio_vidioc_g_frequency, | |
83 | .vidioc_s_frequency = timbradio_vidioc_s_frequency, | |
46821b1d HV |
84 | .vidioc_log_status = v4l2_ctrl_log_status, |
85 | .vidioc_subscribe_event = v4l2_ctrl_subscribe_event, | |
86 | .vidioc_unsubscribe_event = v4l2_event_unsubscribe, | |
d44d1f3b RR |
87 | }; |
88 | ||
89 | static const struct v4l2_file_operations timbradio_fops = { | |
90 | .owner = THIS_MODULE, | |
46821b1d HV |
91 | .open = v4l2_fh_open, |
92 | .release = v4l2_fh_release, | |
93 | .poll = v4l2_ctrl_poll, | |
4f68775b | 94 | .unlocked_ioctl = video_ioctl2, |
d44d1f3b RR |
95 | }; |
96 | ||
4c62e976 | 97 | static int timbradio_probe(struct platform_device *pdev) |
d44d1f3b | 98 | { |
3271d382 | 99 | struct timb_radio_platform_data *pdata = pdev->dev.platform_data; |
d44d1f3b RR |
100 | struct timbradio *tr; |
101 | int err; | |
102 | ||
103 | if (!pdata) { | |
104 | dev_err(&pdev->dev, "Platform data missing\n"); | |
105 | err = -EINVAL; | |
106 | goto err; | |
107 | } | |
108 | ||
2f20c490 | 109 | tr = devm_kzalloc(&pdev->dev, sizeof(*tr), GFP_KERNEL); |
d44d1f3b RR |
110 | if (!tr) { |
111 | err = -ENOMEM; | |
112 | goto err; | |
113 | } | |
114 | ||
115 | tr->pdata = *pdata; | |
4f68775b | 116 | mutex_init(&tr->lock); |
d44d1f3b | 117 | |
c0decac1 | 118 | strscpy(tr->video_dev.name, "Timberdale Radio", |
d44d1f3b RR |
119 | sizeof(tr->video_dev.name)); |
120 | tr->video_dev.fops = &timbradio_fops; | |
121 | tr->video_dev.ioctl_ops = &timbradio_ioctl_ops; | |
122 | tr->video_dev.release = video_device_release_empty; | |
123 | tr->video_dev.minor = -1; | |
4f68775b | 124 | tr->video_dev.lock = &tr->lock; |
d44d1f3b | 125 | |
c0decac1 | 126 | strscpy(tr->v4l2_dev.name, DRIVER_NAME, sizeof(tr->v4l2_dev.name)); |
d44d1f3b RR |
127 | err = v4l2_device_register(NULL, &tr->v4l2_dev); |
128 | if (err) | |
2f20c490 | 129 | goto err; |
d44d1f3b RR |
130 | |
131 | tr->video_dev.v4l2_dev = &tr->v4l2_dev; | |
132 | ||
5bd8d2ab HV |
133 | tr->sd_tuner = v4l2_i2c_new_subdev_board(&tr->v4l2_dev, |
134 | i2c_get_adapter(pdata->i2c_adapter), pdata->tuner, NULL); | |
135 | tr->sd_dsp = v4l2_i2c_new_subdev_board(&tr->v4l2_dev, | |
136 | i2c_get_adapter(pdata->i2c_adapter), pdata->dsp, NULL); | |
44b0c738 JL |
137 | if (tr->sd_tuner == NULL || tr->sd_dsp == NULL) { |
138 | err = -ENODEV; | |
5bd8d2ab | 139 | goto err_video_req; |
44b0c738 | 140 | } |
5bd8d2ab HV |
141 | |
142 | tr->v4l2_dev.ctrl_handler = tr->sd_dsp->ctrl_handler; | |
143 | ||
d44d1f3b RR |
144 | err = video_register_device(&tr->video_dev, VFL_TYPE_RADIO, -1); |
145 | if (err) { | |
146 | dev_err(&pdev->dev, "Error reg video\n"); | |
147 | goto err_video_req; | |
148 | } | |
149 | ||
150 | video_set_drvdata(&tr->video_dev, tr); | |
151 | ||
152 | platform_set_drvdata(pdev, tr); | |
153 | return 0; | |
154 | ||
155 | err_video_req: | |
d44d1f3b | 156 | v4l2_device_unregister(&tr->v4l2_dev); |
d44d1f3b RR |
157 | err: |
158 | dev_err(&pdev->dev, "Failed to register: %d\n", err); | |
159 | ||
160 | return err; | |
161 | } | |
162 | ||
4c62e976 | 163 | static int timbradio_remove(struct platform_device *pdev) |
d44d1f3b RR |
164 | { |
165 | struct timbradio *tr = platform_get_drvdata(pdev); | |
166 | ||
167 | video_unregister_device(&tr->video_dev); | |
d44d1f3b | 168 | v4l2_device_unregister(&tr->v4l2_dev); |
d44d1f3b RR |
169 | return 0; |
170 | } | |
171 | ||
172 | static struct platform_driver timbradio_platform_driver = { | |
173 | .driver = { | |
174 | .name = DRIVER_NAME, | |
d44d1f3b RR |
175 | }, |
176 | .probe = timbradio_probe, | |
4c62e976 | 177 | .remove = timbradio_remove, |
d44d1f3b RR |
178 | }; |
179 | ||
1d6629b1 | 180 | module_platform_driver(timbradio_platform_driver); |
d44d1f3b RR |
181 | |
182 | MODULE_DESCRIPTION("Timberdale Radio driver"); | |
183 | MODULE_AUTHOR("Mocean Laboratories <info@mocean-labs.com>"); | |
184 | MODULE_LICENSE("GPL v2"); | |
29834c1a | 185 | MODULE_VERSION("0.0.2"); |
d44d1f3b | 186 | MODULE_ALIAS("platform:"DRIVER_NAME); |