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4679b79f | 1 | // SPDX-License-Identifier: GPL-2.0 |
326c9862 MD |
2 | /* |
3 | * Generic Platform Camera Driver | |
4 | * | |
5 | * Copyright (C) 2008 Magnus Damm | |
6 | * Based on mt9m001 driver, | |
7 | * Copyright (C) 2008, Guennadi Liakhovetski <kernel@pengutronix.de> | |
326c9862 MD |
8 | */ |
9 | ||
10 | #include <linux/init.h> | |
11 | #include <linux/module.h> | |
12 | #include <linux/slab.h> | |
13 | #include <linux/delay.h> | |
14 | #include <linux/platform_device.h> | |
15 | #include <linux/videodev2.h> | |
979ea1dd | 16 | #include <media/v4l2-subdev.h> |
326c9862 | 17 | #include <media/soc_camera.h> |
eb4b0ec7 | 18 | #include <linux/platform_data/media/soc_camera_platform.h> |
326c9862 MD |
19 | |
20 | struct soc_camera_platform_priv { | |
979ea1dd | 21 | struct v4l2_subdev subdev; |
326c9862 MD |
22 | }; |
23 | ||
08590b96 | 24 | static struct soc_camera_platform_priv *get_priv(struct platform_device *pdev) |
326c9862 | 25 | { |
08590b96 GL |
26 | struct v4l2_subdev *subdev = platform_get_drvdata(pdev); |
27 | return container_of(subdev, struct soc_camera_platform_priv, subdev); | |
28 | } | |
29 | ||
979ea1dd | 30 | static int soc_camera_platform_s_stream(struct v4l2_subdev *sd, int enable) |
326c9862 | 31 | { |
979ea1dd GL |
32 | struct soc_camera_platform_info *p = v4l2_get_subdevdata(sd); |
33 | return p->set_capture(p, enable); | |
326c9862 MD |
34 | } |
35 | ||
e7d403f5 | 36 | static int soc_camera_platform_fill_fmt(struct v4l2_subdev *sd, |
da298c6d HV |
37 | struct v4l2_subdev_pad_config *cfg, |
38 | struct v4l2_subdev_format *format) | |
326c9862 | 39 | { |
979ea1dd | 40 | struct soc_camera_platform_info *p = v4l2_get_subdevdata(sd); |
da298c6d | 41 | struct v4l2_mbus_framefmt *mf = &format->format; |
326c9862 | 42 | |
760697be GL |
43 | mf->width = p->format.width; |
44 | mf->height = p->format.height; | |
45 | mf->code = p->format.code; | |
46 | mf->colorspace = p->format.colorspace; | |
e7d403f5 | 47 | mf->field = p->format.field; |
760697be | 48 | |
326c9862 MD |
49 | return 0; |
50 | } | |
51 | ||
4ec10bac LP |
52 | static int soc_camera_platform_s_power(struct v4l2_subdev *sd, int on) |
53 | { | |
54 | struct soc_camera_platform_info *p = v4l2_get_subdevdata(sd); | |
55 | ||
9aea470b | 56 | return soc_camera_set_power(p->icd->control, &p->icd->sdesc->subdev_desc, NULL, on); |
4ec10bac LP |
57 | } |
58 | ||
32dd9e87 | 59 | static const struct v4l2_subdev_core_ops platform_subdev_core_ops = { |
4ec10bac LP |
60 | .s_power = soc_camera_platform_s_power, |
61 | }; | |
760697be | 62 | |
ebcff5fc HV |
63 | static int soc_camera_platform_enum_mbus_code(struct v4l2_subdev *sd, |
64 | struct v4l2_subdev_pad_config *cfg, | |
65 | struct v4l2_subdev_mbus_code_enum *code) | |
326c9862 | 66 | { |
760697be | 67 | struct soc_camera_platform_info *p = v4l2_get_subdevdata(sd); |
326c9862 | 68 | |
ebcff5fc | 69 | if (code->pad || code->index) |
760697be | 70 | return -EINVAL; |
326c9862 | 71 | |
ebcff5fc | 72 | code->code = p->format.code; |
760697be | 73 | return 0; |
326c9862 MD |
74 | } |
75 | ||
10d5509c HV |
76 | static int soc_camera_platform_get_selection(struct v4l2_subdev *sd, |
77 | struct v4l2_subdev_pad_config *cfg, | |
78 | struct v4l2_subdev_selection *sel) | |
e7d403f5 KM |
79 | { |
80 | struct soc_camera_platform_info *p = v4l2_get_subdevdata(sd); | |
81 | ||
10d5509c HV |
82 | if (sel->which != V4L2_SUBDEV_FORMAT_ACTIVE) |
83 | return -EINVAL; | |
e7d403f5 | 84 | |
10d5509c HV |
85 | switch (sel->target) { |
86 | case V4L2_SEL_TGT_CROP_BOUNDS: | |
87 | case V4L2_SEL_TGT_CROP_DEFAULT: | |
88 | case V4L2_SEL_TGT_CROP: | |
89 | sel->r.left = 0; | |
90 | sel->r.top = 0; | |
91 | sel->r.width = p->format.width; | |
92 | sel->r.height = p->format.height; | |
93 | return 0; | |
94 | default: | |
95 | return -EINVAL; | |
96 | } | |
e7d403f5 KM |
97 | } |
98 | ||
84c760a5 GL |
99 | static int soc_camera_platform_g_mbus_config(struct v4l2_subdev *sd, |
100 | struct v4l2_mbus_config *cfg) | |
101 | { | |
102 | struct soc_camera_platform_info *p = v4l2_get_subdevdata(sd); | |
103 | ||
104 | cfg->flags = p->mbus_param; | |
105 | cfg->type = p->mbus_type; | |
106 | ||
107 | return 0; | |
108 | } | |
109 | ||
32dd9e87 | 110 | static const struct v4l2_subdev_video_ops platform_subdev_video_ops = { |
979ea1dd | 111 | .s_stream = soc_camera_platform_s_stream, |
84c760a5 | 112 | .g_mbus_config = soc_camera_platform_g_mbus_config, |
979ea1dd GL |
113 | }; |
114 | ||
ebcff5fc HV |
115 | static const struct v4l2_subdev_pad_ops platform_subdev_pad_ops = { |
116 | .enum_mbus_code = soc_camera_platform_enum_mbus_code, | |
10d5509c | 117 | .get_selection = soc_camera_platform_get_selection, |
da298c6d HV |
118 | .get_fmt = soc_camera_platform_fill_fmt, |
119 | .set_fmt = soc_camera_platform_fill_fmt, | |
ebcff5fc HV |
120 | }; |
121 | ||
32dd9e87 | 122 | static const struct v4l2_subdev_ops platform_subdev_ops = { |
979ea1dd GL |
123 | .core = &platform_subdev_core_ops, |
124 | .video = &platform_subdev_video_ops, | |
ebcff5fc | 125 | .pad = &platform_subdev_pad_ops, |
979ea1dd GL |
126 | }; |
127 | ||
326c9862 MD |
128 | static int soc_camera_platform_probe(struct platform_device *pdev) |
129 | { | |
979ea1dd | 130 | struct soc_camera_host *ici; |
326c9862 | 131 | struct soc_camera_platform_priv *priv; |
40e2e092 | 132 | struct soc_camera_platform_info *p = pdev->dev.platform_data; |
326c9862 | 133 | struct soc_camera_device *icd; |
326c9862 | 134 | |
326c9862 MD |
135 | if (!p) |
136 | return -EINVAL; | |
137 | ||
7dfff953 | 138 | if (!p->icd) { |
979ea1dd GL |
139 | dev_err(&pdev->dev, |
140 | "Platform has not set soc_camera_device pointer!\n"); | |
141 | return -EINVAL; | |
142 | } | |
143 | ||
70e176a5 | 144 | priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL); |
326c9862 MD |
145 | if (!priv) |
146 | return -ENOMEM; | |
147 | ||
7dfff953 | 148 | icd = p->icd; |
40e2e092 | 149 | |
08590b96 GL |
150 | /* soc-camera convention: control's drvdata points to the subdev */ |
151 | platform_set_drvdata(pdev, &priv->subdev); | |
152 | /* Set the control device reference */ | |
7dfff953 | 153 | icd->control = &pdev->dev; |
979ea1dd | 154 | |
7dfff953 | 155 | ici = to_soc_camera_host(icd->parent); |
979ea1dd | 156 | |
979ea1dd GL |
157 | v4l2_subdev_init(&priv->subdev, &platform_subdev_ops); |
158 | v4l2_set_subdevdata(&priv->subdev, p); | |
c0decac1 | 159 | strscpy(priv->subdev.name, dev_name(&pdev->dev), |
df2b2386 | 160 | sizeof(priv->subdev.name)); |
979ea1dd | 161 | |
f253f184 | 162 | return v4l2_device_register_subdev(&ici->v4l2_dev, &priv->subdev); |
326c9862 MD |
163 | } |
164 | ||
165 | static int soc_camera_platform_remove(struct platform_device *pdev) | |
166 | { | |
08590b96 | 167 | struct soc_camera_platform_priv *priv = get_priv(pdev); |
fff96b66 | 168 | struct soc_camera_platform_info *p = v4l2_get_subdevdata(&priv->subdev); |
326c9862 | 169 | |
fff96b66 | 170 | p->icd->control = NULL; |
979ea1dd | 171 | v4l2_device_unregister_subdev(&priv->subdev); |
326c9862 MD |
172 | return 0; |
173 | } | |
174 | ||
175 | static struct platform_driver soc_camera_platform_driver = { | |
992bc797 | 176 | .driver = { |
326c9862 MD |
177 | .name = "soc_camera_platform", |
178 | }, | |
179 | .probe = soc_camera_platform_probe, | |
180 | .remove = soc_camera_platform_remove, | |
181 | }; | |
182 | ||
1d6629b1 | 183 | module_platform_driver(soc_camera_platform_driver); |
326c9862 MD |
184 | |
185 | MODULE_DESCRIPTION("SoC Camera Platform driver"); | |
186 | MODULE_AUTHOR("Magnus Damm"); | |
187 | MODULE_LICENSE("GPL v2"); | |
40e2e092 | 188 | MODULE_ALIAS("platform:soc_camera_platform"); |