Commit | Line | Data |
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326c9862 MD |
1 | /* |
2 | * Generic Platform Camera Driver | |
3 | * | |
4 | * Copyright (C) 2008 Magnus Damm | |
5 | * Based on mt9m001 driver, | |
6 | * Copyright (C) 2008, Guennadi Liakhovetski <kernel@pengutronix.de> | |
7 | * | |
8 | * This program is free software; you can redistribute it and/or modify | |
9 | * it under the terms of the GNU General Public License version 2 as | |
10 | * published by the Free Software Foundation. | |
11 | */ | |
12 | ||
13 | #include <linux/init.h> | |
14 | #include <linux/module.h> | |
15 | #include <linux/slab.h> | |
16 | #include <linux/delay.h> | |
17 | #include <linux/platform_device.h> | |
18 | #include <linux/videodev2.h> | |
979ea1dd | 19 | #include <media/v4l2-subdev.h> |
326c9862 | 20 | #include <media/soc_camera.h> |
eb4b0ec7 | 21 | #include <linux/platform_data/media/soc_camera_platform.h> |
326c9862 MD |
22 | |
23 | struct soc_camera_platform_priv { | |
979ea1dd | 24 | struct v4l2_subdev subdev; |
326c9862 MD |
25 | }; |
26 | ||
08590b96 | 27 | static struct soc_camera_platform_priv *get_priv(struct platform_device *pdev) |
326c9862 | 28 | { |
08590b96 GL |
29 | struct v4l2_subdev *subdev = platform_get_drvdata(pdev); |
30 | return container_of(subdev, struct soc_camera_platform_priv, subdev); | |
31 | } | |
32 | ||
979ea1dd | 33 | static int soc_camera_platform_s_stream(struct v4l2_subdev *sd, int enable) |
326c9862 | 34 | { |
979ea1dd GL |
35 | struct soc_camera_platform_info *p = v4l2_get_subdevdata(sd); |
36 | return p->set_capture(p, enable); | |
326c9862 MD |
37 | } |
38 | ||
e7d403f5 | 39 | static int soc_camera_platform_fill_fmt(struct v4l2_subdev *sd, |
da298c6d HV |
40 | struct v4l2_subdev_pad_config *cfg, |
41 | struct v4l2_subdev_format *format) | |
326c9862 | 42 | { |
979ea1dd | 43 | struct soc_camera_platform_info *p = v4l2_get_subdevdata(sd); |
da298c6d | 44 | struct v4l2_mbus_framefmt *mf = &format->format; |
326c9862 | 45 | |
760697be GL |
46 | mf->width = p->format.width; |
47 | mf->height = p->format.height; | |
48 | mf->code = p->format.code; | |
49 | mf->colorspace = p->format.colorspace; | |
e7d403f5 | 50 | mf->field = p->format.field; |
760697be | 51 | |
326c9862 MD |
52 | return 0; |
53 | } | |
54 | ||
4ec10bac LP |
55 | static int soc_camera_platform_s_power(struct v4l2_subdev *sd, int on) |
56 | { | |
57 | struct soc_camera_platform_info *p = v4l2_get_subdevdata(sd); | |
58 | ||
9aea470b | 59 | return soc_camera_set_power(p->icd->control, &p->icd->sdesc->subdev_desc, NULL, on); |
4ec10bac LP |
60 | } |
61 | ||
62 | static struct v4l2_subdev_core_ops platform_subdev_core_ops = { | |
63 | .s_power = soc_camera_platform_s_power, | |
64 | }; | |
760697be | 65 | |
ebcff5fc HV |
66 | static int soc_camera_platform_enum_mbus_code(struct v4l2_subdev *sd, |
67 | struct v4l2_subdev_pad_config *cfg, | |
68 | struct v4l2_subdev_mbus_code_enum *code) | |
326c9862 | 69 | { |
760697be | 70 | struct soc_camera_platform_info *p = v4l2_get_subdevdata(sd); |
326c9862 | 71 | |
ebcff5fc | 72 | if (code->pad || code->index) |
760697be | 73 | return -EINVAL; |
326c9862 | 74 | |
ebcff5fc | 75 | code->code = p->format.code; |
760697be | 76 | return 0; |
326c9862 MD |
77 | } |
78 | ||
10d5509c HV |
79 | static int soc_camera_platform_get_selection(struct v4l2_subdev *sd, |
80 | struct v4l2_subdev_pad_config *cfg, | |
81 | struct v4l2_subdev_selection *sel) | |
e7d403f5 KM |
82 | { |
83 | struct soc_camera_platform_info *p = v4l2_get_subdevdata(sd); | |
84 | ||
10d5509c HV |
85 | if (sel->which != V4L2_SUBDEV_FORMAT_ACTIVE) |
86 | return -EINVAL; | |
e7d403f5 | 87 | |
10d5509c HV |
88 | switch (sel->target) { |
89 | case V4L2_SEL_TGT_CROP_BOUNDS: | |
90 | case V4L2_SEL_TGT_CROP_DEFAULT: | |
91 | case V4L2_SEL_TGT_CROP: | |
92 | sel->r.left = 0; | |
93 | sel->r.top = 0; | |
94 | sel->r.width = p->format.width; | |
95 | sel->r.height = p->format.height; | |
96 | return 0; | |
97 | default: | |
98 | return -EINVAL; | |
99 | } | |
e7d403f5 KM |
100 | } |
101 | ||
84c760a5 GL |
102 | static int soc_camera_platform_g_mbus_config(struct v4l2_subdev *sd, |
103 | struct v4l2_mbus_config *cfg) | |
104 | { | |
105 | struct soc_camera_platform_info *p = v4l2_get_subdevdata(sd); | |
106 | ||
107 | cfg->flags = p->mbus_param; | |
108 | cfg->type = p->mbus_type; | |
109 | ||
110 | return 0; | |
111 | } | |
112 | ||
979ea1dd GL |
113 | static struct v4l2_subdev_video_ops platform_subdev_video_ops = { |
114 | .s_stream = soc_camera_platform_s_stream, | |
84c760a5 | 115 | .g_mbus_config = soc_camera_platform_g_mbus_config, |
979ea1dd GL |
116 | }; |
117 | ||
ebcff5fc HV |
118 | static const struct v4l2_subdev_pad_ops platform_subdev_pad_ops = { |
119 | .enum_mbus_code = soc_camera_platform_enum_mbus_code, | |
10d5509c | 120 | .get_selection = soc_camera_platform_get_selection, |
da298c6d HV |
121 | .get_fmt = soc_camera_platform_fill_fmt, |
122 | .set_fmt = soc_camera_platform_fill_fmt, | |
ebcff5fc HV |
123 | }; |
124 | ||
979ea1dd GL |
125 | static struct v4l2_subdev_ops platform_subdev_ops = { |
126 | .core = &platform_subdev_core_ops, | |
127 | .video = &platform_subdev_video_ops, | |
ebcff5fc | 128 | .pad = &platform_subdev_pad_ops, |
979ea1dd GL |
129 | }; |
130 | ||
326c9862 MD |
131 | static int soc_camera_platform_probe(struct platform_device *pdev) |
132 | { | |
979ea1dd | 133 | struct soc_camera_host *ici; |
326c9862 | 134 | struct soc_camera_platform_priv *priv; |
40e2e092 | 135 | struct soc_camera_platform_info *p = pdev->dev.platform_data; |
326c9862 | 136 | struct soc_camera_device *icd; |
326c9862 | 137 | |
326c9862 MD |
138 | if (!p) |
139 | return -EINVAL; | |
140 | ||
7dfff953 | 141 | if (!p->icd) { |
979ea1dd GL |
142 | dev_err(&pdev->dev, |
143 | "Platform has not set soc_camera_device pointer!\n"); | |
144 | return -EINVAL; | |
145 | } | |
146 | ||
70e176a5 | 147 | priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL); |
326c9862 MD |
148 | if (!priv) |
149 | return -ENOMEM; | |
150 | ||
7dfff953 | 151 | icd = p->icd; |
40e2e092 | 152 | |
08590b96 GL |
153 | /* soc-camera convention: control's drvdata points to the subdev */ |
154 | platform_set_drvdata(pdev, &priv->subdev); | |
155 | /* Set the control device reference */ | |
7dfff953 | 156 | icd->control = &pdev->dev; |
979ea1dd | 157 | |
7dfff953 | 158 | ici = to_soc_camera_host(icd->parent); |
979ea1dd | 159 | |
979ea1dd GL |
160 | v4l2_subdev_init(&priv->subdev, &platform_subdev_ops); |
161 | v4l2_set_subdevdata(&priv->subdev, p); | |
979ea1dd GL |
162 | strncpy(priv->subdev.name, dev_name(&pdev->dev), V4L2_SUBDEV_NAME_SIZE); |
163 | ||
f253f184 | 164 | return v4l2_device_register_subdev(&ici->v4l2_dev, &priv->subdev); |
326c9862 MD |
165 | } |
166 | ||
167 | static int soc_camera_platform_remove(struct platform_device *pdev) | |
168 | { | |
08590b96 | 169 | struct soc_camera_platform_priv *priv = get_priv(pdev); |
fff96b66 | 170 | struct soc_camera_platform_info *p = v4l2_get_subdevdata(&priv->subdev); |
326c9862 | 171 | |
fff96b66 | 172 | p->icd->control = NULL; |
979ea1dd | 173 | v4l2_device_unregister_subdev(&priv->subdev); |
326c9862 MD |
174 | return 0; |
175 | } | |
176 | ||
177 | static struct platform_driver soc_camera_platform_driver = { | |
992bc797 | 178 | .driver = { |
326c9862 MD |
179 | .name = "soc_camera_platform", |
180 | }, | |
181 | .probe = soc_camera_platform_probe, | |
182 | .remove = soc_camera_platform_remove, | |
183 | }; | |
184 | ||
1d6629b1 | 185 | module_platform_driver(soc_camera_platform_driver); |
326c9862 MD |
186 | |
187 | MODULE_DESCRIPTION("SoC Camera Platform driver"); | |
188 | MODULE_AUTHOR("Magnus Damm"); | |
189 | MODULE_LICENSE("GPL v2"); | |
40e2e092 | 190 | MODULE_ALIAS("platform:soc_camera_platform"); |