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1802d0be | 1 | // SPDX-License-Identifier: GPL-2.0-only |
d44d1f3b RR |
2 | /* |
3 | * radio-timb.c Timberdale FPGA Radio driver | |
4 | * Copyright (c) 2009 Intel Corporation | |
d44d1f3b RR |
5 | */ |
6 | ||
d44d1f3b RR |
7 | #include <linux/io.h> |
8 | #include <media/v4l2-ioctl.h> | |
9 | #include <media/v4l2-device.h> | |
46821b1d HV |
10 | #include <media/v4l2-ctrls.h> |
11 | #include <media/v4l2-event.h> | |
d44d1f3b RR |
12 | #include <linux/platform_device.h> |
13 | #include <linux/interrupt.h> | |
5a0e3ad6 | 14 | #include <linux/slab.h> |
d44d1f3b | 15 | #include <linux/i2c.h> |
7a707b89 | 16 | #include <linux/module.h> |
eb4b0ec7 | 17 | #include <linux/platform_data/media/timb_radio.h> |
d44d1f3b RR |
18 | |
19 | #define DRIVER_NAME "timb-radio" | |
20 | ||
21 | struct timbradio { | |
22 | struct timb_radio_platform_data pdata; | |
23 | struct v4l2_subdev *sd_tuner; | |
24 | struct v4l2_subdev *sd_dsp; | |
25 | struct video_device video_dev; | |
26 | struct v4l2_device v4l2_dev; | |
4f68775b | 27 | struct mutex lock; |
d44d1f3b RR |
28 | }; |
29 | ||
30 | ||
31 | static int timbradio_vidioc_querycap(struct file *file, void *priv, | |
32 | struct v4l2_capability *v) | |
33 | { | |
c0decac1 MCC |
34 | strscpy(v->driver, DRIVER_NAME, sizeof(v->driver)); |
35 | strscpy(v->card, "Timberdale Radio", sizeof(v->card)); | |
d44d1f3b | 36 | snprintf(v->bus_info, sizeof(v->bus_info), "platform:"DRIVER_NAME); |
d020f839 HV |
37 | v->device_caps = V4L2_CAP_TUNER | V4L2_CAP_RADIO; |
38 | v->capabilities = v->device_caps | V4L2_CAP_DEVICE_CAPS; | |
d44d1f3b RR |
39 | return 0; |
40 | } | |
41 | ||
42 | static int timbradio_vidioc_g_tuner(struct file *file, void *priv, | |
43 | struct v4l2_tuner *v) | |
44 | { | |
45 | struct timbradio *tr = video_drvdata(file); | |
46 | return v4l2_subdev_call(tr->sd_tuner, tuner, g_tuner, v); | |
47 | } | |
48 | ||
49 | static int timbradio_vidioc_s_tuner(struct file *file, void *priv, | |
2f73c7c5 | 50 | const struct v4l2_tuner *v) |
d44d1f3b RR |
51 | { |
52 | struct timbradio *tr = video_drvdata(file); | |
53 | return v4l2_subdev_call(tr->sd_tuner, tuner, s_tuner, v); | |
54 | } | |
55 | ||
d44d1f3b | 56 | static int timbradio_vidioc_s_frequency(struct file *file, void *priv, |
b530a447 | 57 | const struct v4l2_frequency *f) |
d44d1f3b RR |
58 | { |
59 | struct timbradio *tr = video_drvdata(file); | |
60 | return v4l2_subdev_call(tr->sd_tuner, tuner, s_frequency, f); | |
61 | } | |
62 | ||
63 | static int timbradio_vidioc_g_frequency(struct file *file, void *priv, | |
64 | struct v4l2_frequency *f) | |
65 | { | |
66 | struct timbradio *tr = video_drvdata(file); | |
67 | return v4l2_subdev_call(tr->sd_tuner, tuner, g_frequency, f); | |
68 | } | |
69 | ||
d44d1f3b RR |
70 | static const struct v4l2_ioctl_ops timbradio_ioctl_ops = { |
71 | .vidioc_querycap = timbradio_vidioc_querycap, | |
72 | .vidioc_g_tuner = timbradio_vidioc_g_tuner, | |
73 | .vidioc_s_tuner = timbradio_vidioc_s_tuner, | |
74 | .vidioc_g_frequency = timbradio_vidioc_g_frequency, | |
75 | .vidioc_s_frequency = timbradio_vidioc_s_frequency, | |
46821b1d HV |
76 | .vidioc_log_status = v4l2_ctrl_log_status, |
77 | .vidioc_subscribe_event = v4l2_ctrl_subscribe_event, | |
78 | .vidioc_unsubscribe_event = v4l2_event_unsubscribe, | |
d44d1f3b RR |
79 | }; |
80 | ||
81 | static const struct v4l2_file_operations timbradio_fops = { | |
82 | .owner = THIS_MODULE, | |
46821b1d HV |
83 | .open = v4l2_fh_open, |
84 | .release = v4l2_fh_release, | |
85 | .poll = v4l2_ctrl_poll, | |
4f68775b | 86 | .unlocked_ioctl = video_ioctl2, |
d44d1f3b RR |
87 | }; |
88 | ||
4c62e976 | 89 | static int timbradio_probe(struct platform_device *pdev) |
d44d1f3b | 90 | { |
3271d382 | 91 | struct timb_radio_platform_data *pdata = pdev->dev.platform_data; |
d44d1f3b RR |
92 | struct timbradio *tr; |
93 | int err; | |
94 | ||
95 | if (!pdata) { | |
96 | dev_err(&pdev->dev, "Platform data missing\n"); | |
97 | err = -EINVAL; | |
98 | goto err; | |
99 | } | |
100 | ||
2f20c490 | 101 | tr = devm_kzalloc(&pdev->dev, sizeof(*tr), GFP_KERNEL); |
d44d1f3b RR |
102 | if (!tr) { |
103 | err = -ENOMEM; | |
104 | goto err; | |
105 | } | |
106 | ||
107 | tr->pdata = *pdata; | |
4f68775b | 108 | mutex_init(&tr->lock); |
d44d1f3b | 109 | |
c0decac1 | 110 | strscpy(tr->video_dev.name, "Timberdale Radio", |
d44d1f3b RR |
111 | sizeof(tr->video_dev.name)); |
112 | tr->video_dev.fops = &timbradio_fops; | |
113 | tr->video_dev.ioctl_ops = &timbradio_ioctl_ops; | |
114 | tr->video_dev.release = video_device_release_empty; | |
115 | tr->video_dev.minor = -1; | |
4f68775b | 116 | tr->video_dev.lock = &tr->lock; |
d44d1f3b | 117 | |
c0decac1 | 118 | strscpy(tr->v4l2_dev.name, DRIVER_NAME, sizeof(tr->v4l2_dev.name)); |
d44d1f3b RR |
119 | err = v4l2_device_register(NULL, &tr->v4l2_dev); |
120 | if (err) | |
2f20c490 | 121 | goto err; |
d44d1f3b RR |
122 | |
123 | tr->video_dev.v4l2_dev = &tr->v4l2_dev; | |
124 | ||
5bd8d2ab HV |
125 | tr->sd_tuner = v4l2_i2c_new_subdev_board(&tr->v4l2_dev, |
126 | i2c_get_adapter(pdata->i2c_adapter), pdata->tuner, NULL); | |
127 | tr->sd_dsp = v4l2_i2c_new_subdev_board(&tr->v4l2_dev, | |
128 | i2c_get_adapter(pdata->i2c_adapter), pdata->dsp, NULL); | |
44b0c738 JL |
129 | if (tr->sd_tuner == NULL || tr->sd_dsp == NULL) { |
130 | err = -ENODEV; | |
5bd8d2ab | 131 | goto err_video_req; |
44b0c738 | 132 | } |
5bd8d2ab HV |
133 | |
134 | tr->v4l2_dev.ctrl_handler = tr->sd_dsp->ctrl_handler; | |
135 | ||
d44d1f3b RR |
136 | err = video_register_device(&tr->video_dev, VFL_TYPE_RADIO, -1); |
137 | if (err) { | |
138 | dev_err(&pdev->dev, "Error reg video\n"); | |
139 | goto err_video_req; | |
140 | } | |
141 | ||
142 | video_set_drvdata(&tr->video_dev, tr); | |
143 | ||
144 | platform_set_drvdata(pdev, tr); | |
145 | return 0; | |
146 | ||
147 | err_video_req: | |
d44d1f3b | 148 | v4l2_device_unregister(&tr->v4l2_dev); |
d44d1f3b RR |
149 | err: |
150 | dev_err(&pdev->dev, "Failed to register: %d\n", err); | |
151 | ||
152 | return err; | |
153 | } | |
154 | ||
4c62e976 | 155 | static int timbradio_remove(struct platform_device *pdev) |
d44d1f3b RR |
156 | { |
157 | struct timbradio *tr = platform_get_drvdata(pdev); | |
158 | ||
159 | video_unregister_device(&tr->video_dev); | |
d44d1f3b | 160 | v4l2_device_unregister(&tr->v4l2_dev); |
d44d1f3b RR |
161 | return 0; |
162 | } | |
163 | ||
164 | static struct platform_driver timbradio_platform_driver = { | |
165 | .driver = { | |
166 | .name = DRIVER_NAME, | |
d44d1f3b RR |
167 | }, |
168 | .probe = timbradio_probe, | |
4c62e976 | 169 | .remove = timbradio_remove, |
d44d1f3b RR |
170 | }; |
171 | ||
1d6629b1 | 172 | module_platform_driver(timbradio_platform_driver); |
d44d1f3b RR |
173 | |
174 | MODULE_DESCRIPTION("Timberdale Radio driver"); | |
175 | MODULE_AUTHOR("Mocean Laboratories <info@mocean-labs.com>"); | |
176 | MODULE_LICENSE("GPL v2"); | |
29834c1a | 177 | MODULE_VERSION("0.0.2"); |
d44d1f3b | 178 | MODULE_ALIAS("platform:"DRIVER_NAME); |