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> |
50c616fd | 21 | #include <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 KM |
39 | static int soc_camera_platform_fill_fmt(struct v4l2_subdev *sd, |
40 | struct v4l2_mbus_framefmt *mf) | |
326c9862 | 41 | { |
979ea1dd | 42 | struct soc_camera_platform_info *p = v4l2_get_subdevdata(sd); |
326c9862 | 43 | |
760697be GL |
44 | mf->width = p->format.width; |
45 | mf->height = p->format.height; | |
46 | mf->code = p->format.code; | |
47 | mf->colorspace = p->format.colorspace; | |
e7d403f5 | 48 | mf->field = p->format.field; |
760697be | 49 | |
326c9862 MD |
50 | return 0; |
51 | } | |
52 | ||
4ec10bac LP |
53 | static int soc_camera_platform_s_power(struct v4l2_subdev *sd, int on) |
54 | { | |
55 | struct soc_camera_platform_info *p = v4l2_get_subdevdata(sd); | |
56 | ||
9aea470b | 57 | return soc_camera_set_power(p->icd->control, &p->icd->sdesc->subdev_desc, NULL, on); |
4ec10bac LP |
58 | } |
59 | ||
60 | static struct v4l2_subdev_core_ops platform_subdev_core_ops = { | |
61 | .s_power = soc_camera_platform_s_power, | |
62 | }; | |
760697be | 63 | |
ebcff5fc HV |
64 | static int soc_camera_platform_enum_mbus_code(struct v4l2_subdev *sd, |
65 | struct v4l2_subdev_pad_config *cfg, | |
66 | struct v4l2_subdev_mbus_code_enum *code) | |
326c9862 | 67 | { |
760697be | 68 | struct soc_camera_platform_info *p = v4l2_get_subdevdata(sd); |
326c9862 | 69 | |
ebcff5fc | 70 | if (code->pad || code->index) |
760697be | 71 | return -EINVAL; |
326c9862 | 72 | |
ebcff5fc | 73 | code->code = p->format.code; |
760697be | 74 | return 0; |
326c9862 MD |
75 | } |
76 | ||
e7d403f5 KM |
77 | static int soc_camera_platform_g_crop(struct v4l2_subdev *sd, |
78 | struct v4l2_crop *a) | |
79 | { | |
80 | struct soc_camera_platform_info *p = v4l2_get_subdevdata(sd); | |
81 | ||
82 | a->c.left = 0; | |
83 | a->c.top = 0; | |
84 | a->c.width = p->format.width; | |
85 | a->c.height = p->format.height; | |
86 | a->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; | |
87 | ||
88 | return 0; | |
89 | } | |
90 | ||
91 | static int soc_camera_platform_cropcap(struct v4l2_subdev *sd, | |
92 | struct v4l2_cropcap *a) | |
93 | { | |
94 | struct soc_camera_platform_info *p = v4l2_get_subdevdata(sd); | |
95 | ||
96 | a->bounds.left = 0; | |
97 | a->bounds.top = 0; | |
98 | a->bounds.width = p->format.width; | |
99 | a->bounds.height = p->format.height; | |
100 | a->defrect = a->bounds; | |
101 | a->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; | |
102 | a->pixelaspect.numerator = 1; | |
103 | a->pixelaspect.denominator = 1; | |
104 | ||
105 | return 0; | |
106 | } | |
107 | ||
84c760a5 GL |
108 | static int soc_camera_platform_g_mbus_config(struct v4l2_subdev *sd, |
109 | struct v4l2_mbus_config *cfg) | |
110 | { | |
111 | struct soc_camera_platform_info *p = v4l2_get_subdevdata(sd); | |
112 | ||
113 | cfg->flags = p->mbus_param; | |
114 | cfg->type = p->mbus_type; | |
115 | ||
116 | return 0; | |
117 | } | |
118 | ||
979ea1dd GL |
119 | static struct v4l2_subdev_video_ops platform_subdev_video_ops = { |
120 | .s_stream = soc_camera_platform_s_stream, | |
e7d403f5 KM |
121 | .cropcap = soc_camera_platform_cropcap, |
122 | .g_crop = soc_camera_platform_g_crop, | |
123 | .try_mbus_fmt = soc_camera_platform_fill_fmt, | |
124 | .g_mbus_fmt = soc_camera_platform_fill_fmt, | |
125 | .s_mbus_fmt = soc_camera_platform_fill_fmt, | |
84c760a5 | 126 | .g_mbus_config = soc_camera_platform_g_mbus_config, |
979ea1dd GL |
127 | }; |
128 | ||
ebcff5fc HV |
129 | static const struct v4l2_subdev_pad_ops platform_subdev_pad_ops = { |
130 | .enum_mbus_code = soc_camera_platform_enum_mbus_code, | |
131 | }; | |
132 | ||
979ea1dd GL |
133 | static struct v4l2_subdev_ops platform_subdev_ops = { |
134 | .core = &platform_subdev_core_ops, | |
135 | .video = &platform_subdev_video_ops, | |
ebcff5fc | 136 | .pad = &platform_subdev_pad_ops, |
979ea1dd GL |
137 | }; |
138 | ||
326c9862 MD |
139 | static int soc_camera_platform_probe(struct platform_device *pdev) |
140 | { | |
979ea1dd | 141 | struct soc_camera_host *ici; |
326c9862 | 142 | struct soc_camera_platform_priv *priv; |
40e2e092 | 143 | struct soc_camera_platform_info *p = pdev->dev.platform_data; |
326c9862 | 144 | struct soc_camera_device *icd; |
326c9862 | 145 | |
326c9862 MD |
146 | if (!p) |
147 | return -EINVAL; | |
148 | ||
7dfff953 | 149 | if (!p->icd) { |
979ea1dd GL |
150 | dev_err(&pdev->dev, |
151 | "Platform has not set soc_camera_device pointer!\n"); | |
152 | return -EINVAL; | |
153 | } | |
154 | ||
70e176a5 | 155 | priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL); |
326c9862 MD |
156 | if (!priv) |
157 | return -ENOMEM; | |
158 | ||
7dfff953 | 159 | icd = p->icd; |
40e2e092 | 160 | |
08590b96 GL |
161 | /* soc-camera convention: control's drvdata points to the subdev */ |
162 | platform_set_drvdata(pdev, &priv->subdev); | |
163 | /* Set the control device reference */ | |
7dfff953 | 164 | icd->control = &pdev->dev; |
979ea1dd | 165 | |
7dfff953 | 166 | ici = to_soc_camera_host(icd->parent); |
979ea1dd | 167 | |
979ea1dd GL |
168 | v4l2_subdev_init(&priv->subdev, &platform_subdev_ops); |
169 | v4l2_set_subdevdata(&priv->subdev, p); | |
979ea1dd GL |
170 | strncpy(priv->subdev.name, dev_name(&pdev->dev), V4L2_SUBDEV_NAME_SIZE); |
171 | ||
f253f184 | 172 | return v4l2_device_register_subdev(&ici->v4l2_dev, &priv->subdev); |
326c9862 MD |
173 | } |
174 | ||
175 | static int soc_camera_platform_remove(struct platform_device *pdev) | |
176 | { | |
08590b96 | 177 | struct soc_camera_platform_priv *priv = get_priv(pdev); |
fff96b66 | 178 | struct soc_camera_platform_info *p = v4l2_get_subdevdata(&priv->subdev); |
326c9862 | 179 | |
fff96b66 | 180 | p->icd->control = NULL; |
979ea1dd | 181 | v4l2_device_unregister_subdev(&priv->subdev); |
326c9862 MD |
182 | return 0; |
183 | } | |
184 | ||
185 | static struct platform_driver soc_camera_platform_driver = { | |
992bc797 | 186 | .driver = { |
326c9862 MD |
187 | .name = "soc_camera_platform", |
188 | }, | |
189 | .probe = soc_camera_platform_probe, | |
190 | .remove = soc_camera_platform_remove, | |
191 | }; | |
192 | ||
1d6629b1 | 193 | module_platform_driver(soc_camera_platform_driver); |
326c9862 MD |
194 | |
195 | MODULE_DESCRIPTION("SoC Camera Platform driver"); | |
196 | MODULE_AUTHOR("Magnus Damm"); | |
197 | MODULE_LICENSE("GPL v2"); | |
40e2e092 | 198 | MODULE_ALIAS("platform:soc_camera_platform"); |