Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 1 | /* |
| 2 | * camera image capture (abstract) bus driver |
| 3 | * |
| 4 | * Copyright (C) 2008, Guennadi Liakhovetski <kernel@pengutronix.de> |
| 5 | * |
| 6 | * This driver provides an interface between platform-specific camera |
| 7 | * busses and camera devices. It should be used if the camera is |
| 8 | * connected not over a "proper" bus like PCI or USB, but over a |
| 9 | * special bus, like, for example, the Quick Capture interface on PXA270 |
| 10 | * SoCs. Later it should also be used for i.MX31 SoCs from Freescale. |
| 11 | * It can handle multiple cameras and / or multiple busses, which can |
| 12 | * be used, e.g., in stereo-vision applications. |
| 13 | * |
| 14 | * This program is free software; you can redistribute it and/or modify |
| 15 | * it under the terms of the GNU General Public License version 2 as |
| 16 | * published by the Free Software Foundation. |
| 17 | */ |
| 18 | |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 19 | #include <linux/device.h> |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 20 | #include <linux/err.h> |
Guennadi Liakhovetski | 0fd327b | 2009-05-07 13:25:32 -0300 | [diff] [blame] | 21 | #include <linux/i2c.h> |
| 22 | #include <linux/init.h> |
| 23 | #include <linux/list.h> |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 24 | #include <linux/mutex.h> |
Guennadi Liakhovetski | 40e2e09 | 2009-08-25 11:28:22 -0300 | [diff] [blame] | 25 | #include <linux/module.h> |
Guennadi Liakhovetski | 0fd327b | 2009-05-07 13:25:32 -0300 | [diff] [blame] | 26 | #include <linux/platform_device.h> |
Alberto Panizzo | 96e442c | 2010-12-02 07:43:37 -0300 | [diff] [blame] | 27 | #include <linux/regulator/consumer.h> |
Tejun Heo | 5a0e3ad | 2010-03-24 17:04:11 +0900 | [diff] [blame] | 28 | #include <linux/slab.h> |
Mauro Carvalho Chehab | 4f9fb5e | 2010-05-18 00:46:09 -0300 | [diff] [blame] | 29 | #include <linux/pm_runtime.h> |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 30 | #include <linux/vmalloc.h> |
| 31 | |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 32 | #include <media/soc_camera.h> |
Guennadi Liakhovetski | 0fd327b | 2009-05-07 13:25:32 -0300 | [diff] [blame] | 33 | #include <media/v4l2-common.h> |
Guennadi Liakhovetski | 0fd327b | 2009-05-07 13:25:32 -0300 | [diff] [blame] | 34 | #include <media/v4l2-ioctl.h> |
Guennadi Liakhovetski | 40e2e09 | 2009-08-25 11:28:22 -0300 | [diff] [blame] | 35 | #include <media/v4l2-dev.h> |
Guennadi Liakhovetski | 0fd327b | 2009-05-07 13:25:32 -0300 | [diff] [blame] | 36 | #include <media/videobuf-core.h> |
Guennadi Liakhovetski | 592c2ab | 2011-01-29 12:44:51 -0300 | [diff] [blame] | 37 | #include <media/videobuf2-core.h> |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 38 | #include <media/soc_mediabus.h> |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 39 | |
Guennadi Liakhovetski | df2ed07 | 2009-03-13 06:08:20 -0300 | [diff] [blame] | 40 | /* Default to VGA resolution */ |
| 41 | #define DEFAULT_WIDTH 640 |
| 42 | #define DEFAULT_HEIGHT 480 |
| 43 | |
Guennadi Liakhovetski | aee5c2f | 2011-03-28 13:28:28 -0300 | [diff] [blame] | 44 | #define is_streaming(ici, icd) \ |
| 45 | (((ici)->ops->init_videobuf) ? \ |
| 46 | (icd)->vb_vidq.streaming : \ |
| 47 | vb2_is_streaming(&(icd)->vb2_vidq)) |
| 48 | |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 49 | static LIST_HEAD(hosts); |
| 50 | static LIST_HEAD(devices); |
Guennadi Liakhovetski | 40e2e09 | 2009-08-25 11:28:22 -0300 | [diff] [blame] | 51 | static DEFINE_MUTEX(list_lock); /* Protects the list of hosts */ |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 52 | |
Laurent Pinchart | 4ec10ba | 2012-07-20 10:19:50 -0300 | [diff] [blame] | 53 | int soc_camera_power_on(struct device *dev, struct soc_camera_link *icl) |
Alberto Panizzo | 96e442c | 2010-12-02 07:43:37 -0300 | [diff] [blame] | 54 | { |
Guennadi Liakhovetski | 7b9d8c3 | 2011-09-08 04:36:06 -0300 | [diff] [blame] | 55 | int ret = regulator_bulk_enable(icl->num_regulators, |
| 56 | icl->regulators); |
Guennadi Liakhovetski | 3dcc731 | 2011-09-05 12:33:21 -0300 | [diff] [blame] | 57 | if (ret < 0) { |
Laurent Pinchart | 4ec10ba | 2012-07-20 10:19:50 -0300 | [diff] [blame] | 58 | dev_err(dev, "Cannot enable regulators\n"); |
Guennadi Liakhovetski | 3dcc731 | 2011-09-05 12:33:21 -0300 | [diff] [blame] | 59 | return ret; |
| 60 | } |
Alberto Panizzo | 96e442c | 2010-12-02 07:43:37 -0300 | [diff] [blame] | 61 | |
Guennadi Liakhovetski | 3dcc731 | 2011-09-05 12:33:21 -0300 | [diff] [blame] | 62 | if (icl->power) { |
Laurent Pinchart | 4ec10ba | 2012-07-20 10:19:50 -0300 | [diff] [blame] | 63 | ret = icl->power(dev, 1); |
Alberto Panizzo | 96e442c | 2010-12-02 07:43:37 -0300 | [diff] [blame] | 64 | if (ret < 0) { |
Laurent Pinchart | 4ec10ba | 2012-07-20 10:19:50 -0300 | [diff] [blame] | 65 | dev_err(dev, |
Alberto Panizzo | 96e442c | 2010-12-02 07:43:37 -0300 | [diff] [blame] | 66 | "Platform failed to power-on the camera.\n"); |
Laurent Pinchart | 4ec10ba | 2012-07-20 10:19:50 -0300 | [diff] [blame] | 67 | regulator_bulk_disable(icl->num_regulators, |
| 68 | icl->regulators); |
Alberto Panizzo | 96e442c | 2010-12-02 07:43:37 -0300 | [diff] [blame] | 69 | } |
Guennadi Liakhovetski | 3dcc731 | 2011-09-05 12:33:21 -0300 | [diff] [blame] | 70 | } |
| 71 | |
| 72 | return ret; |
| 73 | } |
Laurent Pinchart | 4ec10ba | 2012-07-20 10:19:50 -0300 | [diff] [blame] | 74 | EXPORT_SYMBOL(soc_camera_power_on); |
Guennadi Liakhovetski | 3dcc731 | 2011-09-05 12:33:21 -0300 | [diff] [blame] | 75 | |
Laurent Pinchart | 4ec10ba | 2012-07-20 10:19:50 -0300 | [diff] [blame] | 76 | int soc_camera_power_off(struct device *dev, struct soc_camera_link *icl) |
Guennadi Liakhovetski | 3dcc731 | 2011-09-05 12:33:21 -0300 | [diff] [blame] | 77 | { |
Laurent Pinchart | 24592ad | 2012-07-18 10:54:02 -0300 | [diff] [blame] | 78 | int ret = 0; |
| 79 | int err; |
Guennadi Liakhovetski | 7b9d8c3 | 2011-09-08 04:36:06 -0300 | [diff] [blame] | 80 | |
Guennadi Liakhovetski | 3dcc731 | 2011-09-05 12:33:21 -0300 | [diff] [blame] | 81 | if (icl->power) { |
Laurent Pinchart | 4ec10ba | 2012-07-20 10:19:50 -0300 | [diff] [blame] | 82 | err = icl->power(dev, 0); |
Laurent Pinchart | 24592ad | 2012-07-18 10:54:02 -0300 | [diff] [blame] | 83 | if (err < 0) { |
Laurent Pinchart | 4ec10ba | 2012-07-20 10:19:50 -0300 | [diff] [blame] | 84 | dev_err(dev, |
Alberto Panizzo | 96e442c | 2010-12-02 07:43:37 -0300 | [diff] [blame] | 85 | "Platform failed to power-off the camera.\n"); |
Laurent Pinchart | 4ec10ba | 2012-07-20 10:19:50 -0300 | [diff] [blame] | 86 | ret = err; |
Alberto Panizzo | 96e442c | 2010-12-02 07:43:37 -0300 | [diff] [blame] | 87 | } |
Alberto Panizzo | 96e442c | 2010-12-02 07:43:37 -0300 | [diff] [blame] | 88 | } |
| 89 | |
Laurent Pinchart | 24592ad | 2012-07-18 10:54:02 -0300 | [diff] [blame] | 90 | err = regulator_bulk_disable(icl->num_regulators, |
Guennadi Liakhovetski | 3dcc731 | 2011-09-05 12:33:21 -0300 | [diff] [blame] | 91 | icl->regulators); |
Laurent Pinchart | 24592ad | 2012-07-18 10:54:02 -0300 | [diff] [blame] | 92 | if (err < 0) { |
Laurent Pinchart | 4ec10ba | 2012-07-20 10:19:50 -0300 | [diff] [blame] | 93 | dev_err(dev, "Cannot disable regulators\n"); |
Laurent Pinchart | 24592ad | 2012-07-18 10:54:02 -0300 | [diff] [blame] | 94 | ret = ret ? : err; |
| 95 | } |
Guennadi Liakhovetski | 3dcc731 | 2011-09-05 12:33:21 -0300 | [diff] [blame] | 96 | |
| 97 | return ret; |
Alberto Panizzo | 96e442c | 2010-12-02 07:43:37 -0300 | [diff] [blame] | 98 | } |
Laurent Pinchart | 4ec10ba | 2012-07-20 10:19:50 -0300 | [diff] [blame] | 99 | EXPORT_SYMBOL(soc_camera_power_off); |
| 100 | |
| 101 | static int __soc_camera_power_on(struct soc_camera_device *icd) |
| 102 | { |
| 103 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); |
| 104 | int ret; |
| 105 | |
| 106 | ret = v4l2_subdev_call(sd, core, s_power, 1); |
| 107 | if (ret < 0 && ret != -ENOIOCTLCMD && ret != -ENODEV) |
| 108 | return ret; |
| 109 | |
| 110 | return 0; |
| 111 | } |
| 112 | |
| 113 | static int __soc_camera_power_off(struct soc_camera_device *icd) |
| 114 | { |
| 115 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); |
| 116 | int ret; |
| 117 | |
| 118 | ret = v4l2_subdev_call(sd, core, s_power, 0); |
| 119 | if (ret < 0 && ret != -ENOIOCTLCMD && ret != -ENODEV) |
| 120 | return ret; |
| 121 | |
| 122 | return 0; |
| 123 | } |
Alberto Panizzo | 96e442c | 2010-12-02 07:43:37 -0300 | [diff] [blame] | 124 | |
Guennadi Liakhovetski | c2786ad | 2008-12-01 09:45:27 -0300 | [diff] [blame] | 125 | const struct soc_camera_format_xlate *soc_camera_xlate_by_fourcc( |
| 126 | struct soc_camera_device *icd, unsigned int fourcc) |
| 127 | { |
| 128 | unsigned int i; |
| 129 | |
| 130 | for (i = 0; i < icd->num_user_formats; i++) |
| 131 | if (icd->user_formats[i].host_fmt->fourcc == fourcc) |
| 132 | return icd->user_formats + i; |
| 133 | return NULL; |
| 134 | } |
| 135 | EXPORT_SYMBOL(soc_camera_xlate_by_fourcc); |
| 136 | |
Guennadi Liakhovetski | bd73b36 | 2008-12-23 05:54:45 -0300 | [diff] [blame] | 137 | /** |
Guennadi Liakhovetski | 32c69fcc | 2011-07-26 11:38:01 -0300 | [diff] [blame] | 138 | * soc_camera_apply_board_flags() - apply platform SOCAM_SENSOR_INVERT_* flags |
| 139 | * @icl: camera platform parameters |
| 140 | * @cfg: media bus configuration |
| 141 | * @return: resulting flags |
| 142 | */ |
| 143 | unsigned long soc_camera_apply_board_flags(struct soc_camera_link *icl, |
| 144 | const struct v4l2_mbus_config *cfg) |
| 145 | { |
| 146 | unsigned long f, flags = cfg->flags; |
| 147 | |
| 148 | /* If only one of the two polarities is supported, switch to the opposite */ |
| 149 | if (icl->flags & SOCAM_SENSOR_INVERT_HSYNC) { |
| 150 | f = flags & (V4L2_MBUS_HSYNC_ACTIVE_HIGH | V4L2_MBUS_HSYNC_ACTIVE_LOW); |
| 151 | if (f == V4L2_MBUS_HSYNC_ACTIVE_HIGH || f == V4L2_MBUS_HSYNC_ACTIVE_LOW) |
| 152 | flags ^= V4L2_MBUS_HSYNC_ACTIVE_HIGH | V4L2_MBUS_HSYNC_ACTIVE_LOW; |
| 153 | } |
| 154 | |
| 155 | if (icl->flags & SOCAM_SENSOR_INVERT_VSYNC) { |
| 156 | f = flags & (V4L2_MBUS_VSYNC_ACTIVE_HIGH | V4L2_MBUS_VSYNC_ACTIVE_LOW); |
| 157 | if (f == V4L2_MBUS_VSYNC_ACTIVE_HIGH || f == V4L2_MBUS_VSYNC_ACTIVE_LOW) |
| 158 | flags ^= V4L2_MBUS_VSYNC_ACTIVE_HIGH | V4L2_MBUS_VSYNC_ACTIVE_LOW; |
| 159 | } |
| 160 | |
| 161 | if (icl->flags & SOCAM_SENSOR_INVERT_PCLK) { |
| 162 | f = flags & (V4L2_MBUS_PCLK_SAMPLE_RISING | V4L2_MBUS_PCLK_SAMPLE_FALLING); |
| 163 | if (f == V4L2_MBUS_PCLK_SAMPLE_RISING || f == V4L2_MBUS_PCLK_SAMPLE_FALLING) |
| 164 | flags ^= V4L2_MBUS_PCLK_SAMPLE_RISING | V4L2_MBUS_PCLK_SAMPLE_FALLING; |
| 165 | } |
| 166 | |
| 167 | return flags; |
| 168 | } |
| 169 | EXPORT_SYMBOL(soc_camera_apply_board_flags); |
| 170 | |
Sergio Aguirre | dca6b6d | 2011-04-11 13:14:33 -0300 | [diff] [blame] | 171 | #define pixfmtstr(x) (x) & 0xff, ((x) >> 8) & 0xff, ((x) >> 16) & 0xff, \ |
| 172 | ((x) >> 24) & 0xff |
| 173 | |
| 174 | static int soc_camera_try_fmt(struct soc_camera_device *icd, |
| 175 | struct v4l2_format *f) |
| 176 | { |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 177 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
Laurent Pinchart | bed8d80 | 2012-03-21 08:03:26 -0300 | [diff] [blame] | 178 | const struct soc_camera_format_xlate *xlate; |
Sergio Aguirre | dca6b6d | 2011-04-11 13:14:33 -0300 | [diff] [blame] | 179 | struct v4l2_pix_format *pix = &f->fmt.pix; |
| 180 | int ret; |
| 181 | |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 182 | dev_dbg(icd->pdev, "TRY_FMT(%c%c%c%c, %ux%u)\n", |
Sergio Aguirre | dca6b6d | 2011-04-11 13:14:33 -0300 | [diff] [blame] | 183 | pixfmtstr(pix->pixelformat), pix->width, pix->height); |
| 184 | |
Albert Wang | a70a6c4 | 2012-08-01 02:45:41 -0300 | [diff] [blame] | 185 | if (pix->pixelformat != V4L2_PIX_FMT_JPEG && |
| 186 | !(ici->capabilities & SOCAM_HOST_CAP_STRIDE)) { |
Laurent Pinchart | 914f05c | 2012-03-21 08:03:28 -0300 | [diff] [blame] | 187 | pix->bytesperline = 0; |
| 188 | pix->sizeimage = 0; |
| 189 | } |
Sergio Aguirre | dca6b6d | 2011-04-11 13:14:33 -0300 | [diff] [blame] | 190 | |
| 191 | ret = ici->ops->try_fmt(icd, f); |
| 192 | if (ret < 0) |
| 193 | return ret; |
| 194 | |
Laurent Pinchart | bed8d80 | 2012-03-21 08:03:26 -0300 | [diff] [blame] | 195 | xlate = soc_camera_xlate_by_fourcc(icd, pix->pixelformat); |
| 196 | if (!xlate) |
| 197 | return -EINVAL; |
Sergio Aguirre | dca6b6d | 2011-04-11 13:14:33 -0300 | [diff] [blame] | 198 | |
Laurent Pinchart | bed8d80 | 2012-03-21 08:03:26 -0300 | [diff] [blame] | 199 | ret = soc_mbus_bytes_per_line(pix->width, xlate->host_fmt); |
| 200 | if (ret < 0) |
| 201 | return ret; |
Sergio Aguirre | dca6b6d | 2011-04-11 13:14:33 -0300 | [diff] [blame] | 202 | |
Laurent Pinchart | bed8d80 | 2012-03-21 08:03:26 -0300 | [diff] [blame] | 203 | pix->bytesperline = max_t(u32, pix->bytesperline, ret); |
| 204 | |
| 205 | ret = soc_mbus_image_size(xlate->host_fmt, pix->bytesperline, |
| 206 | pix->height); |
| 207 | if (ret < 0) |
| 208 | return ret; |
| 209 | |
| 210 | pix->sizeimage = max_t(u32, pix->sizeimage, ret); |
Sergio Aguirre | dca6b6d | 2011-04-11 13:14:33 -0300 | [diff] [blame] | 211 | |
| 212 | return 0; |
| 213 | } |
| 214 | |
Hans Verkuil | 7293789 | 2008-06-01 10:35:18 -0300 | [diff] [blame] | 215 | static int soc_camera_try_fmt_vid_cap(struct file *file, void *priv, |
Guennadi Liakhovetski | abe4c47 | 2008-12-01 09:44:56 -0300 | [diff] [blame] | 216 | struct v4l2_format *f) |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 217 | { |
Guennadi Liakhovetski | 57bee29 | 2010-08-17 14:29:51 -0300 | [diff] [blame] | 218 | struct soc_camera_device *icd = file->private_data; |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 219 | |
| 220 | WARN_ON(priv != file->private_data); |
| 221 | |
Guennadi Liakhovetski | d366d4a | 2011-03-21 06:33:25 -0300 | [diff] [blame] | 222 | /* Only single-plane capture is supported so far */ |
| 223 | if (f->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) |
| 224 | return -EINVAL; |
| 225 | |
Guennadi Liakhovetski | ad5f2e8 | 2008-03-07 21:57:18 -0300 | [diff] [blame] | 226 | /* limit format to hardware capabilities */ |
Sergio Aguirre | dca6b6d | 2011-04-11 13:14:33 -0300 | [diff] [blame] | 227 | return soc_camera_try_fmt(icd, f); |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 228 | } |
| 229 | |
| 230 | static int soc_camera_enum_input(struct file *file, void *priv, |
| 231 | struct v4l2_input *inp) |
| 232 | { |
| 233 | if (inp->index != 0) |
| 234 | return -EINVAL; |
| 235 | |
Guennadi Liakhovetski | 8318a64 | 2011-06-07 06:24:32 -0300 | [diff] [blame] | 236 | /* default is camera */ |
| 237 | inp->type = V4L2_INPUT_TYPE_CAMERA; |
| 238 | inp->std = V4L2_STD_UNKNOWN; |
| 239 | strcpy(inp->name, "Camera"); |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 240 | |
Guennadi Liakhovetski | 8318a64 | 2011-06-07 06:24:32 -0300 | [diff] [blame] | 241 | return 0; |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 242 | } |
| 243 | |
| 244 | static int soc_camera_g_input(struct file *file, void *priv, unsigned int *i) |
| 245 | { |
| 246 | *i = 0; |
| 247 | |
| 248 | return 0; |
| 249 | } |
| 250 | |
| 251 | static int soc_camera_s_input(struct file *file, void *priv, unsigned int i) |
| 252 | { |
| 253 | if (i > 0) |
| 254 | return -EINVAL; |
| 255 | |
| 256 | return 0; |
| 257 | } |
| 258 | |
| 259 | static int soc_camera_s_std(struct file *file, void *priv, v4l2_std_id *a) |
| 260 | { |
Guennadi Liakhovetski | 57bee29 | 2010-08-17 14:29:51 -0300 | [diff] [blame] | 261 | struct soc_camera_device *icd = file->private_data; |
Guennadi Liakhovetski | c9c1f1c | 2009-08-25 11:46:59 -0300 | [diff] [blame] | 262 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); |
Kuninori Morimoto | 513791a | 2008-12-18 12:46:45 -0300 | [diff] [blame] | 263 | |
Guennadi Liakhovetski | c9c1f1c | 2009-08-25 11:46:59 -0300 | [diff] [blame] | 264 | return v4l2_subdev_call(sd, core, s_std, *a); |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 265 | } |
| 266 | |
Guennadi Liakhovetski | 2f0babb | 2011-09-09 13:39:20 -0300 | [diff] [blame] | 267 | static int soc_camera_g_std(struct file *file, void *priv, v4l2_std_id *a) |
| 268 | { |
| 269 | struct soc_camera_device *icd = file->private_data; |
| 270 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); |
| 271 | |
| 272 | return v4l2_subdev_call(sd, core, g_std, a); |
| 273 | } |
| 274 | |
Guennadi Liakhovetski | ad3537b | 2012-05-08 13:00:51 -0300 | [diff] [blame] | 275 | static int soc_camera_enum_framesizes(struct file *file, void *fh, |
Qing Xu | ed5b65d | 2011-01-20 05:19:40 -0300 | [diff] [blame] | 276 | struct v4l2_frmsizeenum *fsize) |
| 277 | { |
| 278 | struct soc_camera_device *icd = file->private_data; |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 279 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
Qing Xu | ed5b65d | 2011-01-20 05:19:40 -0300 | [diff] [blame] | 280 | |
Guennadi Liakhovetski | ad3537b | 2012-05-08 13:00:51 -0300 | [diff] [blame] | 281 | return ici->ops->enum_framesizes(icd, fsize); |
Qing Xu | ed5b65d | 2011-01-20 05:19:40 -0300 | [diff] [blame] | 282 | } |
| 283 | |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 284 | static int soc_camera_reqbufs(struct file *file, void *priv, |
| 285 | struct v4l2_requestbuffers *p) |
| 286 | { |
| 287 | int ret; |
Guennadi Liakhovetski | 57bee29 | 2010-08-17 14:29:51 -0300 | [diff] [blame] | 288 | struct soc_camera_device *icd = file->private_data; |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 289 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 290 | |
| 291 | WARN_ON(priv != file->private_data); |
| 292 | |
Guennadi Liakhovetski | 57bee29 | 2010-08-17 14:29:51 -0300 | [diff] [blame] | 293 | if (icd->streamer && icd->streamer != file) |
| 294 | return -EBUSY; |
| 295 | |
Guennadi Liakhovetski | 592c2ab | 2011-01-29 12:44:51 -0300 | [diff] [blame] | 296 | if (ici->ops->init_videobuf) { |
| 297 | ret = videobuf_reqbufs(&icd->vb_vidq, p); |
| 298 | if (ret < 0) |
| 299 | return ret; |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 300 | |
Guennadi Liakhovetski | 592c2ab | 2011-01-29 12:44:51 -0300 | [diff] [blame] | 301 | ret = ici->ops->reqbufs(icd, p); |
| 302 | } else { |
| 303 | ret = vb2_reqbufs(&icd->vb2_vidq, p); |
| 304 | } |
| 305 | |
Guennadi Liakhovetski | 57bee29 | 2010-08-17 14:29:51 -0300 | [diff] [blame] | 306 | if (!ret && !icd->streamer) |
| 307 | icd->streamer = file; |
| 308 | |
| 309 | return ret; |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 310 | } |
| 311 | |
| 312 | static int soc_camera_querybuf(struct file *file, void *priv, |
| 313 | struct v4l2_buffer *p) |
| 314 | { |
Guennadi Liakhovetski | 57bee29 | 2010-08-17 14:29:51 -0300 | [diff] [blame] | 315 | struct soc_camera_device *icd = file->private_data; |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 316 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 317 | |
| 318 | WARN_ON(priv != file->private_data); |
| 319 | |
Guennadi Liakhovetski | 592c2ab | 2011-01-29 12:44:51 -0300 | [diff] [blame] | 320 | if (ici->ops->init_videobuf) |
| 321 | return videobuf_querybuf(&icd->vb_vidq, p); |
| 322 | else |
| 323 | return vb2_querybuf(&icd->vb2_vidq, p); |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 324 | } |
| 325 | |
| 326 | static int soc_camera_qbuf(struct file *file, void *priv, |
| 327 | struct v4l2_buffer *p) |
| 328 | { |
Guennadi Liakhovetski | 57bee29 | 2010-08-17 14:29:51 -0300 | [diff] [blame] | 329 | struct soc_camera_device *icd = file->private_data; |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 330 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 331 | |
| 332 | WARN_ON(priv != file->private_data); |
| 333 | |
Guennadi Liakhovetski | 57bee29 | 2010-08-17 14:29:51 -0300 | [diff] [blame] | 334 | if (icd->streamer != file) |
| 335 | return -EBUSY; |
| 336 | |
Guennadi Liakhovetski | 592c2ab | 2011-01-29 12:44:51 -0300 | [diff] [blame] | 337 | if (ici->ops->init_videobuf) |
| 338 | return videobuf_qbuf(&icd->vb_vidq, p); |
| 339 | else |
| 340 | return vb2_qbuf(&icd->vb2_vidq, p); |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 341 | } |
| 342 | |
| 343 | static int soc_camera_dqbuf(struct file *file, void *priv, |
| 344 | struct v4l2_buffer *p) |
| 345 | { |
Guennadi Liakhovetski | 57bee29 | 2010-08-17 14:29:51 -0300 | [diff] [blame] | 346 | struct soc_camera_device *icd = file->private_data; |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 347 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 348 | |
| 349 | WARN_ON(priv != file->private_data); |
| 350 | |
Guennadi Liakhovetski | 57bee29 | 2010-08-17 14:29:51 -0300 | [diff] [blame] | 351 | if (icd->streamer != file) |
| 352 | return -EBUSY; |
| 353 | |
Guennadi Liakhovetski | 592c2ab | 2011-01-29 12:44:51 -0300 | [diff] [blame] | 354 | if (ici->ops->init_videobuf) |
| 355 | return videobuf_dqbuf(&icd->vb_vidq, p, file->f_flags & O_NONBLOCK); |
| 356 | else |
| 357 | return vb2_dqbuf(&icd->vb2_vidq, p, file->f_flags & O_NONBLOCK); |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 358 | } |
| 359 | |
Guennadi Liakhovetski | 7ae77ee | 2011-09-28 09:25:28 -0300 | [diff] [blame] | 360 | static int soc_camera_create_bufs(struct file *file, void *priv, |
| 361 | struct v4l2_create_buffers *create) |
| 362 | { |
| 363 | struct soc_camera_device *icd = file->private_data; |
| 364 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
| 365 | |
| 366 | /* videobuf2 only */ |
| 367 | if (ici->ops->init_videobuf) |
| 368 | return -EINVAL; |
| 369 | else |
| 370 | return vb2_create_bufs(&icd->vb2_vidq, create); |
| 371 | } |
| 372 | |
| 373 | static int soc_camera_prepare_buf(struct file *file, void *priv, |
| 374 | struct v4l2_buffer *b) |
| 375 | { |
| 376 | struct soc_camera_device *icd = file->private_data; |
| 377 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
| 378 | |
| 379 | /* videobuf2 only */ |
| 380 | if (ici->ops->init_videobuf) |
| 381 | return -EINVAL; |
| 382 | else |
| 383 | return vb2_prepare_buf(&icd->vb2_vidq, b); |
| 384 | } |
| 385 | |
Guennadi Liakhovetski | 40e2e09 | 2009-08-25 11:28:22 -0300 | [diff] [blame] | 386 | /* Always entered with .video_lock held */ |
Guennadi Liakhovetski | c2786ad | 2008-12-01 09:45:27 -0300 | [diff] [blame] | 387 | static int soc_camera_init_user_formats(struct soc_camera_device *icd) |
| 388 | { |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 389 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 390 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
Hans Verkuil | 3805f20 | 2010-05-08 17:55:00 -0300 | [diff] [blame] | 391 | unsigned int i, fmts = 0, raw_fmts = 0; |
| 392 | int ret; |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 393 | enum v4l2_mbus_pixelcode code; |
| 394 | |
| 395 | while (!v4l2_subdev_call(sd, video, enum_mbus_fmt, raw_fmts, &code)) |
| 396 | raw_fmts++; |
Guennadi Liakhovetski | c2786ad | 2008-12-01 09:45:27 -0300 | [diff] [blame] | 397 | |
| 398 | if (!ici->ops->get_formats) |
| 399 | /* |
| 400 | * Fallback mode - the host will have to serve all |
| 401 | * sensor-provided formats one-to-one to the user |
| 402 | */ |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 403 | fmts = raw_fmts; |
Guennadi Liakhovetski | c2786ad | 2008-12-01 09:45:27 -0300 | [diff] [blame] | 404 | else |
| 405 | /* |
| 406 | * First pass - only count formats this host-sensor |
| 407 | * configuration can provide |
| 408 | */ |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 409 | for (i = 0; i < raw_fmts; i++) { |
Guennadi Liakhovetski | fa48984 | 2009-08-25 11:46:43 -0300 | [diff] [blame] | 410 | ret = ici->ops->get_formats(icd, i, NULL); |
| 411 | if (ret < 0) |
| 412 | return ret; |
| 413 | fmts += ret; |
| 414 | } |
Guennadi Liakhovetski | c2786ad | 2008-12-01 09:45:27 -0300 | [diff] [blame] | 415 | |
| 416 | if (!fmts) |
| 417 | return -ENXIO; |
| 418 | |
| 419 | icd->user_formats = |
| 420 | vmalloc(fmts * sizeof(struct soc_camera_format_xlate)); |
| 421 | if (!icd->user_formats) |
| 422 | return -ENOMEM; |
| 423 | |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 424 | dev_dbg(icd->pdev, "Found %d supported formats.\n", fmts); |
Guennadi Liakhovetski | c2786ad | 2008-12-01 09:45:27 -0300 | [diff] [blame] | 425 | |
| 426 | /* Second pass - actually fill data formats */ |
Stefan Herbrechtsmeier | 14df2cc | 2009-06-24 10:31:25 -0300 | [diff] [blame] | 427 | fmts = 0; |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 428 | for (i = 0; i < raw_fmts; i++) |
Guennadi Liakhovetski | c2786ad | 2008-12-01 09:45:27 -0300 | [diff] [blame] | 429 | if (!ici->ops->get_formats) { |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 430 | v4l2_subdev_call(sd, video, enum_mbus_fmt, i, &code); |
Guennadi Liakhovetski | d2dcad4 | 2011-05-18 06:49:54 -0300 | [diff] [blame] | 431 | icd->user_formats[fmts].host_fmt = |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 432 | soc_mbus_get_fmtdesc(code); |
Guennadi Liakhovetski | d2dcad4 | 2011-05-18 06:49:54 -0300 | [diff] [blame] | 433 | if (icd->user_formats[fmts].host_fmt) |
| 434 | icd->user_formats[fmts++].code = code; |
Guennadi Liakhovetski | c2786ad | 2008-12-01 09:45:27 -0300 | [diff] [blame] | 435 | } else { |
Guennadi Liakhovetski | fa48984 | 2009-08-25 11:46:43 -0300 | [diff] [blame] | 436 | ret = ici->ops->get_formats(icd, i, |
| 437 | &icd->user_formats[fmts]); |
| 438 | if (ret < 0) |
| 439 | goto egfmt; |
| 440 | fmts += ret; |
Guennadi Liakhovetski | c2786ad | 2008-12-01 09:45:27 -0300 | [diff] [blame] | 441 | } |
| 442 | |
Guennadi Liakhovetski | d2dcad4 | 2011-05-18 06:49:54 -0300 | [diff] [blame] | 443 | icd->num_user_formats = fmts; |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 444 | icd->current_fmt = &icd->user_formats[0]; |
Guennadi Liakhovetski | c2786ad | 2008-12-01 09:45:27 -0300 | [diff] [blame] | 445 | |
| 446 | return 0; |
Guennadi Liakhovetski | fa48984 | 2009-08-25 11:46:43 -0300 | [diff] [blame] | 447 | |
| 448 | egfmt: |
Guennadi Liakhovetski | fa48984 | 2009-08-25 11:46:43 -0300 | [diff] [blame] | 449 | vfree(icd->user_formats); |
| 450 | return ret; |
Guennadi Liakhovetski | c2786ad | 2008-12-01 09:45:27 -0300 | [diff] [blame] | 451 | } |
| 452 | |
Guennadi Liakhovetski | 40e2e09 | 2009-08-25 11:28:22 -0300 | [diff] [blame] | 453 | /* Always entered with .video_lock held */ |
Guennadi Liakhovetski | c2786ad | 2008-12-01 09:45:27 -0300 | [diff] [blame] | 454 | static void soc_camera_free_user_formats(struct soc_camera_device *icd) |
| 455 | { |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 456 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
Guennadi Liakhovetski | fa48984 | 2009-08-25 11:46:43 -0300 | [diff] [blame] | 457 | |
| 458 | if (ici->ops->put_formats) |
| 459 | ici->ops->put_formats(icd); |
Guennadi Liakhovetski | 40e2e09 | 2009-08-25 11:28:22 -0300 | [diff] [blame] | 460 | icd->current_fmt = NULL; |
Guennadi Liakhovetski | fa48984 | 2009-08-25 11:46:43 -0300 | [diff] [blame] | 461 | icd->num_user_formats = 0; |
Guennadi Liakhovetski | c2786ad | 2008-12-01 09:45:27 -0300 | [diff] [blame] | 462 | vfree(icd->user_formats); |
Guennadi Liakhovetski | 40e2e09 | 2009-08-25 11:28:22 -0300 | [diff] [blame] | 463 | icd->user_formats = NULL; |
Guennadi Liakhovetski | c2786ad | 2008-12-01 09:45:27 -0300 | [diff] [blame] | 464 | } |
| 465 | |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 466 | /* Called with .vb_lock held, or from the first open(2), see comment there */ |
Guennadi Liakhovetski | 57bee29 | 2010-08-17 14:29:51 -0300 | [diff] [blame] | 467 | static int soc_camera_set_fmt(struct soc_camera_device *icd, |
Guennadi Liakhovetski | df2ed07 | 2009-03-13 06:08:20 -0300 | [diff] [blame] | 468 | struct v4l2_format *f) |
| 469 | { |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 470 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
Guennadi Liakhovetski | df2ed07 | 2009-03-13 06:08:20 -0300 | [diff] [blame] | 471 | struct v4l2_pix_format *pix = &f->fmt.pix; |
| 472 | int ret; |
| 473 | |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 474 | dev_dbg(icd->pdev, "S_FMT(%c%c%c%c, %ux%u)\n", |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 475 | pixfmtstr(pix->pixelformat), pix->width, pix->height); |
| 476 | |
Guennadi Liakhovetski | df2ed07 | 2009-03-13 06:08:20 -0300 | [diff] [blame] | 477 | /* We always call try_fmt() before set_fmt() or set_crop() */ |
Sergio Aguirre | dca6b6d | 2011-04-11 13:14:33 -0300 | [diff] [blame] | 478 | ret = soc_camera_try_fmt(icd, f); |
Guennadi Liakhovetski | df2ed07 | 2009-03-13 06:08:20 -0300 | [diff] [blame] | 479 | if (ret < 0) |
| 480 | return ret; |
| 481 | |
| 482 | ret = ici->ops->set_fmt(icd, f); |
| 483 | if (ret < 0) { |
| 484 | return ret; |
| 485 | } else if (!icd->current_fmt || |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 486 | icd->current_fmt->host_fmt->fourcc != pix->pixelformat) { |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 487 | dev_err(icd->pdev, |
Guennadi Liakhovetski | df2ed07 | 2009-03-13 06:08:20 -0300 | [diff] [blame] | 488 | "Host driver hasn't set up current format correctly!\n"); |
| 489 | return -EINVAL; |
| 490 | } |
| 491 | |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 492 | icd->user_width = pix->width; |
| 493 | icd->user_height = pix->height; |
Sergio Aguirre | 0e4c180 | 2011-03-07 21:49:48 -0300 | [diff] [blame] | 494 | icd->bytesperline = pix->bytesperline; |
| 495 | icd->sizeimage = pix->sizeimage; |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 496 | icd->colorspace = pix->colorspace; |
Guennadi Liakhovetski | 592c2ab | 2011-01-29 12:44:51 -0300 | [diff] [blame] | 497 | icd->field = pix->field; |
| 498 | if (ici->ops->init_videobuf) |
| 499 | icd->vb_vidq.field = pix->field; |
Guennadi Liakhovetski | 025c18a | 2009-03-13 06:08:20 -0300 | [diff] [blame] | 500 | |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 501 | dev_dbg(icd->pdev, "set width: %d height: %d\n", |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 502 | icd->user_width, icd->user_height); |
Guennadi Liakhovetski | df2ed07 | 2009-03-13 06:08:20 -0300 | [diff] [blame] | 503 | |
| 504 | /* set physical bus parameters */ |
Guennadi Liakhovetski | 8843d11 | 2011-09-21 17:52:51 -0300 | [diff] [blame] | 505 | return ici->ops->set_bus_param(icd); |
Guennadi Liakhovetski | df2ed07 | 2009-03-13 06:08:20 -0300 | [diff] [blame] | 506 | } |
| 507 | |
Hans Verkuil | bec4366 | 2008-12-30 06:58:20 -0300 | [diff] [blame] | 508 | static int soc_camera_open(struct file *file) |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 509 | { |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 510 | struct video_device *vdev = video_devdata(file); |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 511 | struct soc_camera_device *icd = dev_get_drvdata(vdev->parent); |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 512 | struct soc_camera_link *icl = to_soc_camera_link(icd); |
Guennadi Liakhovetski | 9dc4e48 | 2008-04-22 14:45:32 -0300 | [diff] [blame] | 513 | struct soc_camera_host *ici; |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 514 | int ret; |
| 515 | |
Guennadi Liakhovetski | b0050e4 | 2011-07-28 13:57:53 -0300 | [diff] [blame] | 516 | if (!to_soc_camera_control(icd)) |
Guennadi Liakhovetski | 40e2e09 | 2009-08-25 11:28:22 -0300 | [diff] [blame] | 517 | /* No device driver attached */ |
| 518 | return -ENODEV; |
| 519 | |
Guennadi Liakhovetski | 7d051b3 | 2012-12-20 13:02:51 -0300 | [diff] [blame^] | 520 | /* |
| 521 | * Don't mess with the host during probe: wait until the loop in |
| 522 | * scan_add_host() completes |
| 523 | */ |
| 524 | if (mutex_lock_interruptible(&list_lock)) |
| 525 | return -ERESTARTSYS; |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 526 | ici = to_soc_camera_host(icd->parent); |
Guennadi Liakhovetski | 7d051b3 | 2012-12-20 13:02:51 -0300 | [diff] [blame^] | 527 | mutex_unlock(&list_lock); |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 528 | |
Hans Verkuil | 8422b08 | 2012-06-24 06:49:09 -0300 | [diff] [blame] | 529 | if (mutex_lock_interruptible(&icd->video_lock)) |
| 530 | return -ERESTARTSYS; |
Guennadi Liakhovetski | b8d9904 | 2008-04-04 13:41:25 -0300 | [diff] [blame] | 531 | if (!try_module_get(ici->ops->owner)) { |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 532 | dev_err(icd->pdev, "Couldn't lock capture bus driver.\n"); |
Hans Verkuil | 8422b08 | 2012-06-24 06:49:09 -0300 | [diff] [blame] | 533 | ret = -EINVAL; |
| 534 | goto emodule; |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 535 | } |
| 536 | |
Guennadi Liakhovetski | 1a0063a | 2008-04-04 13:46:34 -0300 | [diff] [blame] | 537 | icd->use_count++; |
| 538 | |
Guennadi Liakhovetski | 9dc4e48 | 2008-04-22 14:45:32 -0300 | [diff] [blame] | 539 | /* Now we really have to activate the camera */ |
| 540 | if (icd->use_count == 1) { |
Guennadi Liakhovetski | 025c18a | 2009-03-13 06:08:20 -0300 | [diff] [blame] | 541 | /* Restore parameters before the last close() per V4L2 API */ |
Guennadi Liakhovetski | df2ed07 | 2009-03-13 06:08:20 -0300 | [diff] [blame] | 542 | struct v4l2_format f = { |
| 543 | .type = V4L2_BUF_TYPE_VIDEO_CAPTURE, |
| 544 | .fmt.pix = { |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 545 | .width = icd->user_width, |
| 546 | .height = icd->user_height, |
Guennadi Liakhovetski | 025c18a | 2009-03-13 06:08:20 -0300 | [diff] [blame] | 547 | .field = icd->field, |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 548 | .colorspace = icd->colorspace, |
| 549 | .pixelformat = |
| 550 | icd->current_fmt->host_fmt->fourcc, |
Guennadi Liakhovetski | df2ed07 | 2009-03-13 06:08:20 -0300 | [diff] [blame] | 551 | }, |
| 552 | }; |
| 553 | |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 554 | /* The camera could have been already on, try to reset */ |
| 555 | if (icl->reset) |
| 556 | icl->reset(icd->pdev); |
| 557 | |
Guennadi Liakhovetski | 2f9a0c8 | 2012-04-18 06:43:09 -0300 | [diff] [blame] | 558 | mutex_lock(&ici->host_lock); |
Guennadi Liakhovetski | b8d9904 | 2008-04-04 13:41:25 -0300 | [diff] [blame] | 559 | ret = ici->ops->add(icd); |
Guennadi Liakhovetski | 2f9a0c8 | 2012-04-18 06:43:09 -0300 | [diff] [blame] | 560 | mutex_unlock(&ici->host_lock); |
Guennadi Liakhovetski | 9dc4e48 | 2008-04-22 14:45:32 -0300 | [diff] [blame] | 561 | if (ret < 0) { |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 562 | dev_err(icd->pdev, "Couldn't activate the camera: %d\n", ret); |
Guennadi Liakhovetski | 9dc4e48 | 2008-04-22 14:45:32 -0300 | [diff] [blame] | 563 | goto eiciadd; |
| 564 | } |
Guennadi Liakhovetski | df2ed07 | 2009-03-13 06:08:20 -0300 | [diff] [blame] | 565 | |
Laurent Pinchart | 4ec10ba | 2012-07-20 10:19:50 -0300 | [diff] [blame] | 566 | ret = __soc_camera_power_on(icd); |
Guennadi Liakhovetski | 7705b6d | 2012-03-14 07:22:07 -0300 | [diff] [blame] | 567 | if (ret < 0) |
| 568 | goto epower; |
| 569 | |
Mauro Carvalho Chehab | 4f9fb5e | 2010-05-18 00:46:09 -0300 | [diff] [blame] | 570 | pm_runtime_enable(&icd->vdev->dev); |
| 571 | ret = pm_runtime_resume(&icd->vdev->dev); |
| 572 | if (ret < 0 && ret != -ENOSYS) |
| 573 | goto eresume; |
| 574 | |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 575 | /* |
| 576 | * Try to configure with default parameters. Notice: this is the |
| 577 | * very first open, so, we cannot race against other calls, |
| 578 | * apart from someone else calling open() simultaneously, but |
| 579 | * .video_lock is protecting us against it. |
| 580 | */ |
Guennadi Liakhovetski | 57bee29 | 2010-08-17 14:29:51 -0300 | [diff] [blame] | 581 | ret = soc_camera_set_fmt(icd, &f); |
Guennadi Liakhovetski | df2ed07 | 2009-03-13 06:08:20 -0300 | [diff] [blame] | 582 | if (ret < 0) |
| 583 | goto esfmt; |
Guennadi Liakhovetski | 24d8c02 | 2010-12-25 18:29:52 -0300 | [diff] [blame] | 584 | |
Guennadi Liakhovetski | 592c2ab | 2011-01-29 12:44:51 -0300 | [diff] [blame] | 585 | if (ici->ops->init_videobuf) { |
| 586 | ici->ops->init_videobuf(&icd->vb_vidq, icd); |
| 587 | } else { |
| 588 | ret = ici->ops->init_videobuf2(&icd->vb2_vidq, icd); |
| 589 | if (ret < 0) |
| 590 | goto einitvb; |
| 591 | } |
Hans Verkuil | ee02da6 | 2011-09-06 12:36:39 -0300 | [diff] [blame] | 592 | v4l2_ctrl_handler_setup(&icd->ctrl_handler); |
Guennadi Liakhovetski | 9dc4e48 | 2008-04-22 14:45:32 -0300 | [diff] [blame] | 593 | } |
Hans Verkuil | 8422b08 | 2012-06-24 06:49:09 -0300 | [diff] [blame] | 594 | mutex_unlock(&icd->video_lock); |
Guennadi Liakhovetski | 9dc4e48 | 2008-04-22 14:45:32 -0300 | [diff] [blame] | 595 | |
Guennadi Liakhovetski | 57bee29 | 2010-08-17 14:29:51 -0300 | [diff] [blame] | 596 | file->private_data = icd; |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 597 | dev_dbg(icd->pdev, "camera device open\n"); |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 598 | |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 599 | return 0; |
| 600 | |
Guennadi Liakhovetski | df2ed07 | 2009-03-13 06:08:20 -0300 | [diff] [blame] | 601 | /* |
Mauro Carvalho Chehab | 4f9fb5e | 2010-05-18 00:46:09 -0300 | [diff] [blame] | 602 | * First four errors are entered with the .video_lock held |
Guennadi Liakhovetski | df2ed07 | 2009-03-13 06:08:20 -0300 | [diff] [blame] | 603 | * and use_count == 1 |
| 604 | */ |
Guennadi Liakhovetski | 592c2ab | 2011-01-29 12:44:51 -0300 | [diff] [blame] | 605 | einitvb: |
Guennadi Liakhovetski | df2ed07 | 2009-03-13 06:08:20 -0300 | [diff] [blame] | 606 | esfmt: |
Mauro Carvalho Chehab | 4f9fb5e | 2010-05-18 00:46:09 -0300 | [diff] [blame] | 607 | pm_runtime_disable(&icd->vdev->dev); |
| 608 | eresume: |
Laurent Pinchart | 4ec10ba | 2012-07-20 10:19:50 -0300 | [diff] [blame] | 609 | __soc_camera_power_off(icd); |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 610 | epower: |
Guennadi Liakhovetski | 7d051b3 | 2012-12-20 13:02:51 -0300 | [diff] [blame^] | 611 | mutex_lock(&ici->host_lock); |
Guennadi Liakhovetski | 7705b6d | 2012-03-14 07:22:07 -0300 | [diff] [blame] | 612 | ici->ops->remove(icd); |
Guennadi Liakhovetski | 7d051b3 | 2012-12-20 13:02:51 -0300 | [diff] [blame^] | 613 | mutex_unlock(&ici->host_lock); |
Guennadi Liakhovetski | 7705b6d | 2012-03-14 07:22:07 -0300 | [diff] [blame] | 614 | eiciadd: |
Guennadi Liakhovetski | c2786ad | 2008-12-01 09:45:27 -0300 | [diff] [blame] | 615 | icd->use_count--; |
Guennadi Liakhovetski | b8d9904 | 2008-04-04 13:41:25 -0300 | [diff] [blame] | 616 | module_put(ici->ops->owner); |
Hans Verkuil | 8422b08 | 2012-06-24 06:49:09 -0300 | [diff] [blame] | 617 | emodule: |
| 618 | mutex_unlock(&icd->video_lock); |
Guennadi Liakhovetski | 57bee29 | 2010-08-17 14:29:51 -0300 | [diff] [blame] | 619 | |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 620 | return ret; |
| 621 | } |
| 622 | |
Hans Verkuil | bec4366 | 2008-12-30 06:58:20 -0300 | [diff] [blame] | 623 | static int soc_camera_close(struct file *file) |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 624 | { |
Guennadi Liakhovetski | 57bee29 | 2010-08-17 14:29:51 -0300 | [diff] [blame] | 625 | struct soc_camera_device *icd = file->private_data; |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 626 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 627 | |
Hans Verkuil | 8422b08 | 2012-06-24 06:49:09 -0300 | [diff] [blame] | 628 | mutex_lock(&icd->video_lock); |
Guennadi Liakhovetski | 9dc4e48 | 2008-04-22 14:45:32 -0300 | [diff] [blame] | 629 | icd->use_count--; |
Guennadi Liakhovetski | 40e2e09 | 2009-08-25 11:28:22 -0300 | [diff] [blame] | 630 | if (!icd->use_count) { |
Mauro Carvalho Chehab | 4f9fb5e | 2010-05-18 00:46:09 -0300 | [diff] [blame] | 631 | pm_runtime_suspend(&icd->vdev->dev); |
| 632 | pm_runtime_disable(&icd->vdev->dev); |
| 633 | |
Guennadi Liakhovetski | 592c2ab | 2011-01-29 12:44:51 -0300 | [diff] [blame] | 634 | if (ici->ops->init_videobuf2) |
| 635 | vb2_queue_release(&icd->vb2_vidq); |
Guennadi Liakhovetski | 7d051b3 | 2012-12-20 13:02:51 -0300 | [diff] [blame^] | 636 | mutex_lock(&ici->host_lock); |
Lei Wen | 48ecf9f | 2011-11-22 11:04:29 -0300 | [diff] [blame] | 637 | ici->ops->remove(icd); |
Guennadi Liakhovetski | 7d051b3 | 2012-12-20 13:02:51 -0300 | [diff] [blame^] | 638 | mutex_unlock(&ici->host_lock); |
Mauro Carvalho Chehab | 4f9fb5e | 2010-05-18 00:46:09 -0300 | [diff] [blame] | 639 | |
Laurent Pinchart | 4ec10ba | 2012-07-20 10:19:50 -0300 | [diff] [blame] | 640 | __soc_camera_power_off(icd); |
Guennadi Liakhovetski | 40e2e09 | 2009-08-25 11:28:22 -0300 | [diff] [blame] | 641 | } |
Guennadi Liakhovetski | 025c18a | 2009-03-13 06:08:20 -0300 | [diff] [blame] | 642 | |
Guennadi Liakhovetski | 57bee29 | 2010-08-17 14:29:51 -0300 | [diff] [blame] | 643 | if (icd->streamer == file) |
| 644 | icd->streamer = NULL; |
Hans Verkuil | 8422b08 | 2012-06-24 06:49:09 -0300 | [diff] [blame] | 645 | mutex_unlock(&icd->video_lock); |
Guennadi Liakhovetski | 57bee29 | 2010-08-17 14:29:51 -0300 | [diff] [blame] | 646 | |
Guennadi Liakhovetski | b8d9904 | 2008-04-04 13:41:25 -0300 | [diff] [blame] | 647 | module_put(ici->ops->owner); |
Guennadi Liakhovetski | 9dc4e48 | 2008-04-22 14:45:32 -0300 | [diff] [blame] | 648 | |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 649 | dev_dbg(icd->pdev, "camera device close\n"); |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 650 | |
| 651 | return 0; |
| 652 | } |
| 653 | |
Andrew Morton | aba360d | 2008-04-22 14:45:59 -0300 | [diff] [blame] | 654 | static ssize_t soc_camera_read(struct file *file, char __user *buf, |
Guennadi Liakhovetski | abe4c47 | 2008-12-01 09:44:56 -0300 | [diff] [blame] | 655 | size_t count, loff_t *ppos) |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 656 | { |
Guennadi Liakhovetski | 57bee29 | 2010-08-17 14:29:51 -0300 | [diff] [blame] | 657 | struct soc_camera_device *icd = file->private_data; |
Anatolij Gustschin | 1438be56 | 2012-08-24 11:36:11 -0300 | [diff] [blame] | 658 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
| 659 | |
| 660 | dev_dbg(icd->pdev, "read called, buf %p\n", buf); |
| 661 | |
| 662 | if (ici->ops->init_videobuf2 && icd->vb2_vidq.io_modes & VB2_READ) |
| 663 | return vb2_read(&icd->vb2_vidq, buf, count, ppos, |
| 664 | file->f_flags & O_NONBLOCK); |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 665 | |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 666 | dev_err(icd->pdev, "camera device read not implemented\n"); |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 667 | |
Anatolij Gustschin | 1438be56 | 2012-08-24 11:36:11 -0300 | [diff] [blame] | 668 | return -EINVAL; |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 669 | } |
| 670 | |
| 671 | static int soc_camera_mmap(struct file *file, struct vm_area_struct *vma) |
| 672 | { |
Guennadi Liakhovetski | 57bee29 | 2010-08-17 14:29:51 -0300 | [diff] [blame] | 673 | struct soc_camera_device *icd = file->private_data; |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 674 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 675 | int err; |
| 676 | |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 677 | dev_dbg(icd->pdev, "mmap called, vma=0x%08lx\n", (unsigned long)vma); |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 678 | |
Guennadi Liakhovetski | 57bee29 | 2010-08-17 14:29:51 -0300 | [diff] [blame] | 679 | if (icd->streamer != file) |
| 680 | return -EBUSY; |
| 681 | |
Hans Verkuil | 8422b08 | 2012-06-24 06:49:09 -0300 | [diff] [blame] | 682 | if (mutex_lock_interruptible(&icd->video_lock)) |
| 683 | return -ERESTARTSYS; |
Guennadi Liakhovetski | 592c2ab | 2011-01-29 12:44:51 -0300 | [diff] [blame] | 684 | if (ici->ops->init_videobuf) |
| 685 | err = videobuf_mmap_mapper(&icd->vb_vidq, vma); |
| 686 | else |
| 687 | err = vb2_mmap(&icd->vb2_vidq, vma); |
Hans Verkuil | 8422b08 | 2012-06-24 06:49:09 -0300 | [diff] [blame] | 688 | mutex_unlock(&icd->video_lock); |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 689 | |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 690 | dev_dbg(icd->pdev, "vma start=0x%08lx, size=%ld, ret=%d\n", |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 691 | (unsigned long)vma->vm_start, |
| 692 | (unsigned long)vma->vm_end - (unsigned long)vma->vm_start, |
| 693 | err); |
| 694 | |
| 695 | return err; |
| 696 | } |
| 697 | |
| 698 | static unsigned int soc_camera_poll(struct file *file, poll_table *pt) |
| 699 | { |
Guennadi Liakhovetski | 57bee29 | 2010-08-17 14:29:51 -0300 | [diff] [blame] | 700 | struct soc_camera_device *icd = file->private_data; |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 701 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
Hans Verkuil | 8422b08 | 2012-06-24 06:49:09 -0300 | [diff] [blame] | 702 | unsigned res = POLLERR; |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 703 | |
Guennadi Liakhovetski | 57bee29 | 2010-08-17 14:29:51 -0300 | [diff] [blame] | 704 | if (icd->streamer != file) |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 705 | return POLLERR; |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 706 | |
Hans Verkuil | 8422b08 | 2012-06-24 06:49:09 -0300 | [diff] [blame] | 707 | mutex_lock(&icd->video_lock); |
| 708 | if (ici->ops->init_videobuf && list_empty(&icd->vb_vidq.stream)) |
| 709 | dev_err(icd->pdev, "Trying to poll with no queued buffers!\n"); |
| 710 | else |
| 711 | res = ici->ops->poll(file, pt); |
| 712 | mutex_unlock(&icd->video_lock); |
| 713 | return res; |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 714 | } |
| 715 | |
Guennadi Liakhovetski | 592c2ab | 2011-01-29 12:44:51 -0300 | [diff] [blame] | 716 | void soc_camera_lock(struct vb2_queue *vq) |
| 717 | { |
| 718 | struct soc_camera_device *icd = vb2_get_drv_priv(vq); |
| 719 | mutex_lock(&icd->video_lock); |
| 720 | } |
| 721 | EXPORT_SYMBOL(soc_camera_lock); |
| 722 | |
| 723 | void soc_camera_unlock(struct vb2_queue *vq) |
| 724 | { |
| 725 | struct soc_camera_device *icd = vb2_get_drv_priv(vq); |
| 726 | mutex_unlock(&icd->video_lock); |
| 727 | } |
| 728 | EXPORT_SYMBOL(soc_camera_unlock); |
| 729 | |
Hans Verkuil | bec4366 | 2008-12-30 06:58:20 -0300 | [diff] [blame] | 730 | static struct v4l2_file_operations soc_camera_fops = { |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 731 | .owner = THIS_MODULE, |
| 732 | .open = soc_camera_open, |
| 733 | .release = soc_camera_close, |
Guennadi Liakhovetski | b6a633c | 2010-12-25 17:40:26 -0300 | [diff] [blame] | 734 | .unlocked_ioctl = video_ioctl2, |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 735 | .read = soc_camera_read, |
| 736 | .mmap = soc_camera_mmap, |
| 737 | .poll = soc_camera_poll, |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 738 | }; |
| 739 | |
Hans Verkuil | 7293789 | 2008-06-01 10:35:18 -0300 | [diff] [blame] | 740 | static int soc_camera_s_fmt_vid_cap(struct file *file, void *priv, |
Guennadi Liakhovetski | abe4c47 | 2008-12-01 09:44:56 -0300 | [diff] [blame] | 741 | struct v4l2_format *f) |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 742 | { |
Guennadi Liakhovetski | 57bee29 | 2010-08-17 14:29:51 -0300 | [diff] [blame] | 743 | struct soc_camera_device *icd = file->private_data; |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 744 | int ret; |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 745 | |
| 746 | WARN_ON(priv != file->private_data); |
| 747 | |
Guennadi Liakhovetski | d366d4a | 2011-03-21 06:33:25 -0300 | [diff] [blame] | 748 | if (f->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) { |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 749 | dev_warn(icd->pdev, "Wrong buf-type %d\n", f->type); |
Guennadi Liakhovetski | d366d4a | 2011-03-21 06:33:25 -0300 | [diff] [blame] | 750 | return -EINVAL; |
| 751 | } |
| 752 | |
Guennadi Liakhovetski | 57bee29 | 2010-08-17 14:29:51 -0300 | [diff] [blame] | 753 | if (icd->streamer && icd->streamer != file) |
| 754 | return -EBUSY; |
Guennadi Liakhovetski | 1c3bb74 | 2008-12-18 12:28:54 -0300 | [diff] [blame] | 755 | |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 756 | if (is_streaming(to_soc_camera_host(icd->parent), icd)) { |
| 757 | dev_err(icd->pdev, "S_FMT denied: queue initialised\n"); |
Guennadi Liakhovetski | b6a633c | 2010-12-25 17:40:26 -0300 | [diff] [blame] | 758 | return -EBUSY; |
Guennadi Liakhovetski | 1c3bb74 | 2008-12-18 12:28:54 -0300 | [diff] [blame] | 759 | } |
| 760 | |
Guennadi Liakhovetski | 57bee29 | 2010-08-17 14:29:51 -0300 | [diff] [blame] | 761 | ret = soc_camera_set_fmt(icd, f); |
| 762 | |
| 763 | if (!ret && !icd->streamer) |
| 764 | icd->streamer = file; |
Guennadi Liakhovetski | 1c3bb74 | 2008-12-18 12:28:54 -0300 | [diff] [blame] | 765 | |
Guennadi Liakhovetski | 1c3bb74 | 2008-12-18 12:28:54 -0300 | [diff] [blame] | 766 | return ret; |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 767 | } |
| 768 | |
Hans Verkuil | 7293789 | 2008-06-01 10:35:18 -0300 | [diff] [blame] | 769 | static int soc_camera_enum_fmt_vid_cap(struct file *file, void *priv, |
Guennadi Liakhovetski | abe4c47 | 2008-12-01 09:44:56 -0300 | [diff] [blame] | 770 | struct v4l2_fmtdesc *f) |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 771 | { |
Guennadi Liakhovetski | 57bee29 | 2010-08-17 14:29:51 -0300 | [diff] [blame] | 772 | struct soc_camera_device *icd = file->private_data; |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 773 | const struct soc_mbus_pixelfmt *format; |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 774 | |
| 775 | WARN_ON(priv != file->private_data); |
| 776 | |
Guennadi Liakhovetski | c2786ad | 2008-12-01 09:45:27 -0300 | [diff] [blame] | 777 | if (f->index >= icd->num_user_formats) |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 778 | return -EINVAL; |
| 779 | |
Guennadi Liakhovetski | c2786ad | 2008-12-01 09:45:27 -0300 | [diff] [blame] | 780 | format = icd->user_formats[f->index].host_fmt; |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 781 | |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 782 | if (format->name) |
| 783 | strlcpy(f->description, format->name, sizeof(f->description)); |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 784 | f->pixelformat = format->fourcc; |
| 785 | return 0; |
| 786 | } |
| 787 | |
Hans Verkuil | 7293789 | 2008-06-01 10:35:18 -0300 | [diff] [blame] | 788 | static int soc_camera_g_fmt_vid_cap(struct file *file, void *priv, |
Guennadi Liakhovetski | abe4c47 | 2008-12-01 09:44:56 -0300 | [diff] [blame] | 789 | struct v4l2_format *f) |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 790 | { |
Guennadi Liakhovetski | 57bee29 | 2010-08-17 14:29:51 -0300 | [diff] [blame] | 791 | struct soc_camera_device *icd = file->private_data; |
Guennadi Liakhovetski | 64f5905 | 2008-12-18 11:51:55 -0300 | [diff] [blame] | 792 | struct v4l2_pix_format *pix = &f->fmt.pix; |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 793 | |
| 794 | WARN_ON(priv != file->private_data); |
| 795 | |
Guennadi Liakhovetski | d366d4a | 2011-03-21 06:33:25 -0300 | [diff] [blame] | 796 | if (f->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) |
| 797 | return -EINVAL; |
| 798 | |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 799 | pix->width = icd->user_width; |
| 800 | pix->height = icd->user_height; |
Sergio Aguirre | 0e4c180 | 2011-03-07 21:49:48 -0300 | [diff] [blame] | 801 | pix->bytesperline = icd->bytesperline; |
| 802 | pix->sizeimage = icd->sizeimage; |
Guennadi Liakhovetski | 592c2ab | 2011-01-29 12:44:51 -0300 | [diff] [blame] | 803 | pix->field = icd->field; |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 804 | pix->pixelformat = icd->current_fmt->host_fmt->fourcc; |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 805 | pix->colorspace = icd->colorspace; |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 806 | dev_dbg(icd->pdev, "current_fmt->fourcc: 0x%08x\n", |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 807 | icd->current_fmt->host_fmt->fourcc); |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 808 | return 0; |
| 809 | } |
| 810 | |
| 811 | static int soc_camera_querycap(struct file *file, void *priv, |
| 812 | struct v4l2_capability *cap) |
| 813 | { |
Guennadi Liakhovetski | 57bee29 | 2010-08-17 14:29:51 -0300 | [diff] [blame] | 814 | struct soc_camera_device *icd = file->private_data; |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 815 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 816 | |
| 817 | WARN_ON(priv != file->private_data); |
| 818 | |
| 819 | strlcpy(cap->driver, ici->drv_name, sizeof(cap->driver)); |
Guennadi Liakhovetski | b8d9904 | 2008-04-04 13:41:25 -0300 | [diff] [blame] | 820 | return ici->ops->querycap(ici, cap); |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 821 | } |
| 822 | |
| 823 | static int soc_camera_streamon(struct file *file, void *priv, |
| 824 | enum v4l2_buf_type i) |
| 825 | { |
Guennadi Liakhovetski | 57bee29 | 2010-08-17 14:29:51 -0300 | [diff] [blame] | 826 | struct soc_camera_device *icd = file->private_data; |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 827 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
Guennadi Liakhovetski | c9c1f1c | 2009-08-25 11:46:59 -0300 | [diff] [blame] | 828 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); |
Guennadi Liakhovetski | 1c3bb74 | 2008-12-18 12:28:54 -0300 | [diff] [blame] | 829 | int ret; |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 830 | |
| 831 | WARN_ON(priv != file->private_data); |
| 832 | |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 833 | if (i != V4L2_BUF_TYPE_VIDEO_CAPTURE) |
| 834 | return -EINVAL; |
| 835 | |
Guennadi Liakhovetski | 57bee29 | 2010-08-17 14:29:51 -0300 | [diff] [blame] | 836 | if (icd->streamer != file) |
| 837 | return -EBUSY; |
| 838 | |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 839 | /* This calls buf_queue from host driver's videobuf_queue_ops */ |
Guennadi Liakhovetski | 592c2ab | 2011-01-29 12:44:51 -0300 | [diff] [blame] | 840 | if (ici->ops->init_videobuf) |
| 841 | ret = videobuf_streamon(&icd->vb_vidq); |
| 842 | else |
| 843 | ret = vb2_streamon(&icd->vb2_vidq, i); |
| 844 | |
Anatolij Gustschin | 7fdbd85 | 2011-01-31 09:19:32 -0300 | [diff] [blame] | 845 | if (!ret) |
| 846 | v4l2_subdev_call(sd, video, s_stream, 1); |
Guennadi Liakhovetski | 1c3bb74 | 2008-12-18 12:28:54 -0300 | [diff] [blame] | 847 | |
Guennadi Liakhovetski | 1c3bb74 | 2008-12-18 12:28:54 -0300 | [diff] [blame] | 848 | return ret; |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 849 | } |
| 850 | |
| 851 | static int soc_camera_streamoff(struct file *file, void *priv, |
| 852 | enum v4l2_buf_type i) |
| 853 | { |
Guennadi Liakhovetski | 57bee29 | 2010-08-17 14:29:51 -0300 | [diff] [blame] | 854 | struct soc_camera_device *icd = file->private_data; |
Guennadi Liakhovetski | c9c1f1c | 2009-08-25 11:46:59 -0300 | [diff] [blame] | 855 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 856 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 857 | |
| 858 | WARN_ON(priv != file->private_data); |
| 859 | |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 860 | if (i != V4L2_BUF_TYPE_VIDEO_CAPTURE) |
| 861 | return -EINVAL; |
| 862 | |
Guennadi Liakhovetski | 57bee29 | 2010-08-17 14:29:51 -0300 | [diff] [blame] | 863 | if (icd->streamer != file) |
| 864 | return -EBUSY; |
| 865 | |
Guennadi Liakhovetski | 5d28d52 | 2009-12-11 11:15:05 -0300 | [diff] [blame] | 866 | /* |
| 867 | * This calls buf_release from host driver's videobuf_queue_ops for all |
| 868 | * remaining buffers. When the last buffer is freed, stop capture |
| 869 | */ |
Guennadi Liakhovetski | 592c2ab | 2011-01-29 12:44:51 -0300 | [diff] [blame] | 870 | if (ici->ops->init_videobuf) |
| 871 | videobuf_streamoff(&icd->vb_vidq); |
| 872 | else |
| 873 | vb2_streamoff(&icd->vb2_vidq, i); |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 874 | |
Guennadi Liakhovetski | c9c1f1c | 2009-08-25 11:46:59 -0300 | [diff] [blame] | 875 | v4l2_subdev_call(sd, video, s_stream, 0); |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 876 | |
| 877 | return 0; |
| 878 | } |
| 879 | |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 880 | static int soc_camera_cropcap(struct file *file, void *fh, |
| 881 | struct v4l2_cropcap *a) |
| 882 | { |
Guennadi Liakhovetski | 57bee29 | 2010-08-17 14:29:51 -0300 | [diff] [blame] | 883 | struct soc_camera_device *icd = file->private_data; |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 884 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 885 | |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 886 | return ici->ops->cropcap(icd, a); |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 887 | } |
| 888 | |
| 889 | static int soc_camera_g_crop(struct file *file, void *fh, |
| 890 | struct v4l2_crop *a) |
| 891 | { |
Guennadi Liakhovetski | 57bee29 | 2010-08-17 14:29:51 -0300 | [diff] [blame] | 892 | struct soc_camera_device *icd = file->private_data; |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 893 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 894 | int ret; |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 895 | |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 896 | ret = ici->ops->get_crop(icd, a); |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 897 | |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 898 | return ret; |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 899 | } |
| 900 | |
Guennadi Liakhovetski | 68a54f0 | 2009-08-25 11:46:52 -0300 | [diff] [blame] | 901 | /* |
| 902 | * According to the V4L2 API, drivers shall not update the struct v4l2_crop |
| 903 | * argument with the actual geometry, instead, the user shall use G_CROP to |
Guennadi Liakhovetski | ab56d5e | 2010-03-23 11:31:46 -0300 | [diff] [blame] | 904 | * retrieve it. |
Guennadi Liakhovetski | 68a54f0 | 2009-08-25 11:46:52 -0300 | [diff] [blame] | 905 | */ |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 906 | static int soc_camera_s_crop(struct file *file, void *fh, |
Hans Verkuil | 4f99659 | 2012-09-05 05:10:48 -0300 | [diff] [blame] | 907 | const struct v4l2_crop *a) |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 908 | { |
Guennadi Liakhovetski | 57bee29 | 2010-08-17 14:29:51 -0300 | [diff] [blame] | 909 | struct soc_camera_device *icd = file->private_data; |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 910 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
Hans Verkuil | 4f99659 | 2012-09-05 05:10:48 -0300 | [diff] [blame] | 911 | const struct v4l2_rect *rect = &a->c; |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 912 | struct v4l2_crop current_crop; |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 913 | int ret; |
| 914 | |
| 915 | if (a->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) |
| 916 | return -EINVAL; |
| 917 | |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 918 | dev_dbg(icd->pdev, "S_CROP(%ux%u@%u:%u)\n", |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 919 | rect->width, rect->height, rect->left, rect->top); |
| 920 | |
Anatolij Gustschin | 605a410 | 2012-11-28 17:15:51 -0300 | [diff] [blame] | 921 | current_crop.type = a->type; |
| 922 | |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 923 | /* If get_crop fails, we'll let host and / or client drivers decide */ |
| 924 | ret = ici->ops->get_crop(icd, ¤t_crop); |
| 925 | |
Guennadi Liakhovetski | b897a91 | 2009-08-25 11:46:53 -0300 | [diff] [blame] | 926 | /* Prohibit window size change with initialised buffers */ |
Guennadi Liakhovetski | 103754a | 2010-08-05 19:23:44 -0300 | [diff] [blame] | 927 | if (ret < 0) { |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 928 | dev_err(icd->pdev, |
Guennadi Liakhovetski | 103754a | 2010-08-05 19:23:44 -0300 | [diff] [blame] | 929 | "S_CROP denied: getting current crop failed\n"); |
Guennadi Liakhovetski | aee5c2f | 2011-03-28 13:28:28 -0300 | [diff] [blame] | 930 | } else if ((a->c.width == current_crop.c.width && |
| 931 | a->c.height == current_crop.c.height) || |
| 932 | !is_streaming(ici, icd)) { |
| 933 | /* same size or not streaming - use .set_crop() */ |
| 934 | ret = ici->ops->set_crop(icd, a); |
| 935 | } else if (ici->ops->set_livecrop) { |
| 936 | ret = ici->ops->set_livecrop(icd, a); |
| 937 | } else { |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 938 | dev_err(icd->pdev, |
Guennadi Liakhovetski | b897a91 | 2009-08-25 11:46:53 -0300 | [diff] [blame] | 939 | "S_CROP denied: queue initialised and sizes differ\n"); |
| 940 | ret = -EBUSY; |
Guennadi Liakhovetski | b897a91 | 2009-08-25 11:46:53 -0300 | [diff] [blame] | 941 | } |
| 942 | |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 943 | return ret; |
| 944 | } |
| 945 | |
Guennadi Liakhovetski | 3bfb410 | 2012-06-22 13:40:08 -0300 | [diff] [blame] | 946 | static int soc_camera_g_selection(struct file *file, void *fh, |
| 947 | struct v4l2_selection *s) |
| 948 | { |
| 949 | struct soc_camera_device *icd = file->private_data; |
| 950 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
| 951 | |
| 952 | /* With a wrong type no need to try to fall back to cropping */ |
| 953 | if (s->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) |
| 954 | return -EINVAL; |
| 955 | |
| 956 | if (!ici->ops->get_selection) |
| 957 | return -ENOTTY; |
| 958 | |
| 959 | return ici->ops->get_selection(icd, s); |
| 960 | } |
| 961 | |
| 962 | static int soc_camera_s_selection(struct file *file, void *fh, |
| 963 | struct v4l2_selection *s) |
| 964 | { |
| 965 | struct soc_camera_device *icd = file->private_data; |
| 966 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
| 967 | int ret; |
| 968 | |
| 969 | /* In all these cases cropping emulation will not help */ |
| 970 | if (s->type != V4L2_BUF_TYPE_VIDEO_CAPTURE || |
Sylwester Nawrocki | eb3c311 | 2012-08-22 18:03:30 -0300 | [diff] [blame] | 971 | (s->target != V4L2_SEL_TGT_COMPOSE && |
| 972 | s->target != V4L2_SEL_TGT_CROP)) |
Guennadi Liakhovetski | 3bfb410 | 2012-06-22 13:40:08 -0300 | [diff] [blame] | 973 | return -EINVAL; |
| 974 | |
Sylwester Nawrocki | eb3c311 | 2012-08-22 18:03:30 -0300 | [diff] [blame] | 975 | if (s->target == V4L2_SEL_TGT_COMPOSE) { |
Guennadi Liakhovetski | 3bfb410 | 2012-06-22 13:40:08 -0300 | [diff] [blame] | 976 | /* No output size change during a running capture! */ |
| 977 | if (is_streaming(ici, icd) && |
| 978 | (icd->user_width != s->r.width || |
| 979 | icd->user_height != s->r.height)) |
| 980 | return -EBUSY; |
| 981 | |
| 982 | /* |
| 983 | * Only one user is allowed to change the output format, touch |
| 984 | * buffers, start / stop streaming, poll for data |
| 985 | */ |
| 986 | if (icd->streamer && icd->streamer != file) |
| 987 | return -EBUSY; |
| 988 | } |
| 989 | |
| 990 | if (!ici->ops->set_selection) |
| 991 | return -ENOTTY; |
| 992 | |
| 993 | ret = ici->ops->set_selection(icd, s); |
| 994 | if (!ret && |
Sylwester Nawrocki | eb3c311 | 2012-08-22 18:03:30 -0300 | [diff] [blame] | 995 | s->target == V4L2_SEL_TGT_COMPOSE) { |
Guennadi Liakhovetski | 3bfb410 | 2012-06-22 13:40:08 -0300 | [diff] [blame] | 996 | icd->user_width = s->r.width; |
| 997 | icd->user_height = s->r.height; |
| 998 | if (!icd->streamer) |
| 999 | icd->streamer = file; |
| 1000 | } |
| 1001 | |
| 1002 | return ret; |
| 1003 | } |
| 1004 | |
Guennadi Liakhovetski | c9f6ef6 | 2010-02-09 18:00:30 +0100 | [diff] [blame] | 1005 | static int soc_camera_g_parm(struct file *file, void *fh, |
| 1006 | struct v4l2_streamparm *a) |
| 1007 | { |
Guennadi Liakhovetski | 57bee29 | 2010-08-17 14:29:51 -0300 | [diff] [blame] | 1008 | struct soc_camera_device *icd = file->private_data; |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 1009 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
Guennadi Liakhovetski | c9f6ef6 | 2010-02-09 18:00:30 +0100 | [diff] [blame] | 1010 | |
| 1011 | if (ici->ops->get_parm) |
| 1012 | return ici->ops->get_parm(icd, a); |
| 1013 | |
| 1014 | return -ENOIOCTLCMD; |
| 1015 | } |
| 1016 | |
| 1017 | static int soc_camera_s_parm(struct file *file, void *fh, |
| 1018 | struct v4l2_streamparm *a) |
| 1019 | { |
Guennadi Liakhovetski | 57bee29 | 2010-08-17 14:29:51 -0300 | [diff] [blame] | 1020 | struct soc_camera_device *icd = file->private_data; |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 1021 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
Guennadi Liakhovetski | c9f6ef6 | 2010-02-09 18:00:30 +0100 | [diff] [blame] | 1022 | |
| 1023 | if (ici->ops->set_parm) |
| 1024 | return ici->ops->set_parm(icd, a); |
| 1025 | |
| 1026 | return -ENOIOCTLCMD; |
| 1027 | } |
| 1028 | |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 1029 | static int soc_camera_g_chip_ident(struct file *file, void *fh, |
Hans Verkuil | aecde8b5 | 2008-12-30 07:14:19 -0300 | [diff] [blame] | 1030 | struct v4l2_dbg_chip_ident *id) |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 1031 | { |
Guennadi Liakhovetski | 57bee29 | 2010-08-17 14:29:51 -0300 | [diff] [blame] | 1032 | struct soc_camera_device *icd = file->private_data; |
Guennadi Liakhovetski | c9c1f1c | 2009-08-25 11:46:59 -0300 | [diff] [blame] | 1033 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 1034 | |
Guennadi Liakhovetski | c9c1f1c | 2009-08-25 11:46:59 -0300 | [diff] [blame] | 1035 | return v4l2_subdev_call(sd, core, g_chip_ident, id); |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 1036 | } |
| 1037 | |
| 1038 | #ifdef CONFIG_VIDEO_ADV_DEBUG |
| 1039 | static int soc_camera_g_register(struct file *file, void *fh, |
Hans Verkuil | aecde8b5 | 2008-12-30 07:14:19 -0300 | [diff] [blame] | 1040 | struct v4l2_dbg_register *reg) |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 1041 | { |
Guennadi Liakhovetski | 57bee29 | 2010-08-17 14:29:51 -0300 | [diff] [blame] | 1042 | struct soc_camera_device *icd = file->private_data; |
Guennadi Liakhovetski | c9c1f1c | 2009-08-25 11:46:59 -0300 | [diff] [blame] | 1043 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 1044 | |
Guennadi Liakhovetski | c9c1f1c | 2009-08-25 11:46:59 -0300 | [diff] [blame] | 1045 | return v4l2_subdev_call(sd, core, g_register, reg); |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 1046 | } |
| 1047 | |
| 1048 | static int soc_camera_s_register(struct file *file, void *fh, |
Hans Verkuil | aecde8b5 | 2008-12-30 07:14:19 -0300 | [diff] [blame] | 1049 | struct v4l2_dbg_register *reg) |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 1050 | { |
Guennadi Liakhovetski | 57bee29 | 2010-08-17 14:29:51 -0300 | [diff] [blame] | 1051 | struct soc_camera_device *icd = file->private_data; |
Guennadi Liakhovetski | c9c1f1c | 2009-08-25 11:46:59 -0300 | [diff] [blame] | 1052 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 1053 | |
Guennadi Liakhovetski | c9c1f1c | 2009-08-25 11:46:59 -0300 | [diff] [blame] | 1054 | return v4l2_subdev_call(sd, core, s_register, reg); |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 1055 | } |
| 1056 | #endif |
| 1057 | |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 1058 | static int soc_camera_probe(struct soc_camera_device *icd); |
| 1059 | |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 1060 | /* So far this function cannot fail */ |
| 1061 | static void scan_add_host(struct soc_camera_host *ici) |
| 1062 | { |
| 1063 | struct soc_camera_device *icd; |
| 1064 | |
Guennadi Liakhovetski | 7d051b3 | 2012-12-20 13:02:51 -0300 | [diff] [blame^] | 1065 | mutex_lock(&list_lock); |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 1066 | |
| 1067 | list_for_each_entry(icd, &devices, list) { |
| 1068 | if (icd->iface == ici->nr) { |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 1069 | icd->parent = ici->v4l2_dev.dev; |
Mauro Carvalho Chehab | 84cc237 | 2012-10-27 16:42:05 -0300 | [diff] [blame] | 1070 | soc_camera_probe(icd); |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 1071 | } |
| 1072 | } |
| 1073 | |
Guennadi Liakhovetski | 7d051b3 | 2012-12-20 13:02:51 -0300 | [diff] [blame^] | 1074 | mutex_unlock(&list_lock); |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 1075 | } |
| 1076 | |
Guennadi Liakhovetski | 40e2e09 | 2009-08-25 11:28:22 -0300 | [diff] [blame] | 1077 | #ifdef CONFIG_I2C_BOARDINFO |
| 1078 | static int soc_camera_init_i2c(struct soc_camera_device *icd, |
| 1079 | struct soc_camera_link *icl) |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 1080 | { |
Guennadi Liakhovetski | 40e2e09 | 2009-08-25 11:28:22 -0300 | [diff] [blame] | 1081 | struct i2c_client *client; |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 1082 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
Guennadi Liakhovetski | 40e2e09 | 2009-08-25 11:28:22 -0300 | [diff] [blame] | 1083 | struct i2c_adapter *adap = i2c_get_adapter(icl->i2c_adapter_id); |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 1084 | struct v4l2_subdev *subdev; |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 1085 | |
Guennadi Liakhovetski | 40e2e09 | 2009-08-25 11:28:22 -0300 | [diff] [blame] | 1086 | if (!adap) { |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 1087 | dev_err(icd->pdev, "Cannot get I2C adapter #%d. No driver?\n", |
Guennadi Liakhovetski | 40e2e09 | 2009-08-25 11:28:22 -0300 | [diff] [blame] | 1088 | icl->i2c_adapter_id); |
| 1089 | goto ei2cga; |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 1090 | } |
| 1091 | |
Guennadi Liakhovetski | 2f0babb | 2011-09-09 13:39:20 -0300 | [diff] [blame] | 1092 | icl->board_info->platform_data = icl; |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 1093 | |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 1094 | subdev = v4l2_i2c_new_subdev_board(&ici->v4l2_dev, adap, |
Laurent Pinchart | 9a1f8b3 | 2010-09-24 10:16:44 -0300 | [diff] [blame] | 1095 | icl->board_info, NULL); |
Magnus Damm | d74f841 | 2010-02-09 17:40:40 +0900 | [diff] [blame] | 1096 | if (!subdev) |
Guennadi Liakhovetski | 40e2e09 | 2009-08-25 11:28:22 -0300 | [diff] [blame] | 1097 | goto ei2cnd; |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 1098 | |
Laurent Pinchart | c4ce6d1 | 2010-07-30 17:24:54 -0300 | [diff] [blame] | 1099 | client = v4l2_get_subdevdata(subdev); |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 1100 | |
Guennadi Liakhovetski | 40e2e09 | 2009-08-25 11:28:22 -0300 | [diff] [blame] | 1101 | /* Use to_i2c_client(dev) to recover the i2c client */ |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 1102 | icd->control = &client->dev; |
Guennadi Liakhovetski | 40e2e09 | 2009-08-25 11:28:22 -0300 | [diff] [blame] | 1103 | |
| 1104 | return 0; |
| 1105 | ei2cnd: |
| 1106 | i2c_put_adapter(adap); |
| 1107 | ei2cga: |
Magnus Damm | d74f841 | 2010-02-09 17:40:40 +0900 | [diff] [blame] | 1108 | return -ENODEV; |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 1109 | } |
| 1110 | |
Guennadi Liakhovetski | 40e2e09 | 2009-08-25 11:28:22 -0300 | [diff] [blame] | 1111 | static void soc_camera_free_i2c(struct soc_camera_device *icd) |
| 1112 | { |
| 1113 | struct i2c_client *client = |
| 1114 | to_i2c_client(to_soc_camera_control(icd)); |
Guennadi Liakhovetski | c8dd707 | 2011-03-23 05:26:11 -0300 | [diff] [blame] | 1115 | struct i2c_adapter *adap = client->adapter; |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 1116 | |
| 1117 | icd->control = NULL; |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 1118 | v4l2_device_unregister_subdev(i2c_get_clientdata(client)); |
Guennadi Liakhovetski | 40e2e09 | 2009-08-25 11:28:22 -0300 | [diff] [blame] | 1119 | i2c_unregister_device(client); |
Guennadi Liakhovetski | c8dd707 | 2011-03-23 05:26:11 -0300 | [diff] [blame] | 1120 | i2c_put_adapter(adap); |
Guennadi Liakhovetski | 40e2e09 | 2009-08-25 11:28:22 -0300 | [diff] [blame] | 1121 | } |
| 1122 | #else |
| 1123 | #define soc_camera_init_i2c(icd, icl) (-ENODEV) |
| 1124 | #define soc_camera_free_i2c(icd) do {} while (0) |
| 1125 | #endif |
| 1126 | |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 1127 | static int soc_camera_video_start(struct soc_camera_device *icd); |
Guennadi Liakhovetski | 40e2e09 | 2009-08-25 11:28:22 -0300 | [diff] [blame] | 1128 | static int video_dev_create(struct soc_camera_device *icd); |
| 1129 | /* Called during host-driver probe */ |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 1130 | static int soc_camera_probe(struct soc_camera_device *icd) |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 1131 | { |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 1132 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
Guennadi Liakhovetski | 40e2e09 | 2009-08-25 11:28:22 -0300 | [diff] [blame] | 1133 | struct soc_camera_link *icl = to_soc_camera_link(icd); |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 1134 | struct device *control = NULL; |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 1135 | struct v4l2_subdev *sd; |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 1136 | struct v4l2_mbus_framefmt mf; |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 1137 | int ret; |
| 1138 | |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 1139 | dev_info(icd->pdev, "Probing %s\n", dev_name(icd->pdev)); |
Guennadi Liakhovetski | 1c3bb74 | 2008-12-18 12:28:54 -0300 | [diff] [blame] | 1140 | |
Hans Verkuil | ee02da6 | 2011-09-06 12:36:39 -0300 | [diff] [blame] | 1141 | /* |
| 1142 | * Currently the subdev with the largest number of controls (13) is |
| 1143 | * ov6550. So let's pick 16 as a hint for the control handler. Note |
| 1144 | * that this is a hint only: too large and you waste some memory, too |
| 1145 | * small and there is a (very) small performance hit when looking up |
| 1146 | * controls in the internal hash. |
| 1147 | */ |
| 1148 | ret = v4l2_ctrl_handler_init(&icd->ctrl_handler, 16); |
| 1149 | if (ret < 0) |
| 1150 | return ret; |
| 1151 | |
Guennadi Liakhovetski | c9a8d89 | 2012-09-27 06:40:30 -0300 | [diff] [blame] | 1152 | ret = devm_regulator_bulk_get(icd->pdev, icl->num_regulators, |
| 1153 | icl->regulators); |
Alberto Panizzo | 96e442c | 2010-12-02 07:43:37 -0300 | [diff] [blame] | 1154 | if (ret < 0) |
| 1155 | goto ereg; |
| 1156 | |
Guennadi Liakhovetski | 7705b6d | 2012-03-14 07:22:07 -0300 | [diff] [blame] | 1157 | /* The camera could have been already on, try to reset */ |
| 1158 | if (icl->reset) |
| 1159 | icl->reset(icd->pdev); |
| 1160 | |
Guennadi Liakhovetski | 7d051b3 | 2012-12-20 13:02:51 -0300 | [diff] [blame^] | 1161 | mutex_lock(&ici->host_lock); |
Guennadi Liakhovetski | 7705b6d | 2012-03-14 07:22:07 -0300 | [diff] [blame] | 1162 | ret = ici->ops->add(icd); |
Guennadi Liakhovetski | 7d051b3 | 2012-12-20 13:02:51 -0300 | [diff] [blame^] | 1163 | mutex_unlock(&ici->host_lock); |
Guennadi Liakhovetski | 7705b6d | 2012-03-14 07:22:07 -0300 | [diff] [blame] | 1164 | if (ret < 0) |
| 1165 | goto eadd; |
| 1166 | |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 1167 | /* Must have icd->vdev before registering the device */ |
Guennadi Liakhovetski | 40e2e09 | 2009-08-25 11:28:22 -0300 | [diff] [blame] | 1168 | ret = video_dev_create(icd); |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 1169 | if (ret < 0) |
Guennadi Liakhovetski | 40e2e09 | 2009-08-25 11:28:22 -0300 | [diff] [blame] | 1170 | goto evdc; |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 1171 | |
Guennadi Liakhovetski | 40e2e09 | 2009-08-25 11:28:22 -0300 | [diff] [blame] | 1172 | /* Non-i2c cameras, e.g., soc_camera_platform, have no board_info */ |
| 1173 | if (icl->board_info) { |
| 1174 | ret = soc_camera_init_i2c(icd, icl); |
| 1175 | if (ret < 0) |
| 1176 | goto eadddev; |
| 1177 | } else if (!icl->add_device || !icl->del_device) { |
| 1178 | ret = -EINVAL; |
| 1179 | goto eadddev; |
| 1180 | } else { |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 1181 | if (icl->module_name) |
| 1182 | ret = request_module(icl->module_name); |
| 1183 | |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 1184 | ret = icl->add_device(icd); |
Guennadi Liakhovetski | 40e2e09 | 2009-08-25 11:28:22 -0300 | [diff] [blame] | 1185 | if (ret < 0) |
| 1186 | goto eadddev; |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 1187 | |
Guennadi Liakhovetski | 96c7539 | 2009-08-25 11:53:23 -0300 | [diff] [blame] | 1188 | /* |
| 1189 | * FIXME: this is racy, have to use driver-binding notification, |
| 1190 | * when it is available |
| 1191 | */ |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 1192 | control = to_soc_camera_control(icd); |
Guennadi Liakhovetski | 08590b9 | 2009-08-25 11:46:54 -0300 | [diff] [blame] | 1193 | if (!control || !control->driver || !dev_get_drvdata(control) || |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 1194 | !try_module_get(control->driver->owner)) { |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 1195 | icl->del_device(icd); |
Guennadi Liakhovetski | 7ae77ee | 2011-09-28 09:25:28 -0300 | [diff] [blame] | 1196 | ret = -ENODEV; |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 1197 | goto enodrv; |
| 1198 | } |
Guennadi Liakhovetski | 025c18a | 2009-03-13 06:08:20 -0300 | [diff] [blame] | 1199 | } |
| 1200 | |
Guennadi Liakhovetski | 24105eb | 2011-03-23 05:41:28 -0300 | [diff] [blame] | 1201 | sd = soc_camera_to_subdev(icd); |
Guennadi Liakhovetski | 4c0b036 | 2011-12-05 16:01:13 -0300 | [diff] [blame] | 1202 | sd->grp_id = soc_camera_grp_id(icd); |
| 1203 | v4l2_set_subdev_hostdata(sd, icd); |
Guennadi Liakhovetski | 24105eb | 2011-03-23 05:41:28 -0300 | [diff] [blame] | 1204 | |
Peter Senna Tschudin | ab99cb1 | 2012-09-06 12:24:00 -0300 | [diff] [blame] | 1205 | ret = v4l2_ctrl_add_handler(&icd->ctrl_handler, sd->ctrl_handler, NULL); |
| 1206 | if (ret < 0) |
Hans Verkuil | ee02da6 | 2011-09-06 12:36:39 -0300 | [diff] [blame] | 1207 | goto ectrl; |
| 1208 | |
Guennadi Liakhovetski | fa48984 | 2009-08-25 11:46:43 -0300 | [diff] [blame] | 1209 | /* At this point client .probe() should have run already */ |
| 1210 | ret = soc_camera_init_user_formats(icd); |
| 1211 | if (ret < 0) |
| 1212 | goto eiufmt; |
| 1213 | |
Guennadi Liakhovetski | fa48984 | 2009-08-25 11:46:43 -0300 | [diff] [blame] | 1214 | icd->field = V4L2_FIELD_ANY; |
| 1215 | |
Guennadi Liakhovetski | b6a633c | 2010-12-25 17:40:26 -0300 | [diff] [blame] | 1216 | /* |
| 1217 | * ..._video_start() will create a device node, video_register_device() |
| 1218 | * itself is protected against concurrent open() calls, but we also have |
| 1219 | * to protect our data. |
| 1220 | */ |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 1221 | mutex_lock(&icd->video_lock); |
| 1222 | |
| 1223 | ret = soc_camera_video_start(icd); |
| 1224 | if (ret < 0) |
| 1225 | goto evidstart; |
Guennadi Liakhovetski | 40e2e09 | 2009-08-25 11:28:22 -0300 | [diff] [blame] | 1226 | |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 1227 | /* Try to improve our guess of a reasonable window format */ |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 1228 | if (!v4l2_subdev_call(sd, video, g_mbus_fmt, &mf)) { |
| 1229 | icd->user_width = mf.width; |
| 1230 | icd->user_height = mf.height; |
| 1231 | icd->colorspace = mf.colorspace; |
| 1232 | icd->field = mf.field; |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 1233 | } |
| 1234 | |
Guennadi Liakhovetski | 7d051b3 | 2012-12-20 13:02:51 -0300 | [diff] [blame^] | 1235 | mutex_lock(&ici->host_lock); |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 1236 | ici->ops->remove(icd); |
Guennadi Liakhovetski | 7d051b3 | 2012-12-20 13:02:51 -0300 | [diff] [blame^] | 1237 | mutex_unlock(&ici->host_lock); |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 1238 | |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 1239 | mutex_unlock(&icd->video_lock); |
Guennadi Liakhovetski | 40e2e09 | 2009-08-25 11:28:22 -0300 | [diff] [blame] | 1240 | |
| 1241 | return 0; |
| 1242 | |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 1243 | evidstart: |
| 1244 | mutex_unlock(&icd->video_lock); |
Guennadi Liakhovetski | fa48984 | 2009-08-25 11:46:43 -0300 | [diff] [blame] | 1245 | soc_camera_free_user_formats(icd); |
| 1246 | eiufmt: |
Hans Verkuil | ee02da6 | 2011-09-06 12:36:39 -0300 | [diff] [blame] | 1247 | ectrl: |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 1248 | if (icl->board_info) { |
Guennadi Liakhovetski | 40e2e09 | 2009-08-25 11:28:22 -0300 | [diff] [blame] | 1249 | soc_camera_free_i2c(icd); |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 1250 | } else { |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 1251 | icl->del_device(icd); |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 1252 | module_put(control->driver->owner); |
| 1253 | } |
| 1254 | enodrv: |
Guennadi Liakhovetski | 40e2e09 | 2009-08-25 11:28:22 -0300 | [diff] [blame] | 1255 | eadddev: |
| 1256 | video_device_release(icd->vdev); |
Guennadi Liakhovetski | 7b9d8c3 | 2011-09-08 04:36:06 -0300 | [diff] [blame] | 1257 | icd->vdev = NULL; |
Guennadi Liakhovetski | 40e2e09 | 2009-08-25 11:28:22 -0300 | [diff] [blame] | 1258 | evdc: |
Guennadi Liakhovetski | 7d051b3 | 2012-12-20 13:02:51 -0300 | [diff] [blame^] | 1259 | mutex_lock(&ici->host_lock); |
Guennadi Liakhovetski | 7705b6d | 2012-03-14 07:22:07 -0300 | [diff] [blame] | 1260 | ici->ops->remove(icd); |
Guennadi Liakhovetski | 7d051b3 | 2012-12-20 13:02:51 -0300 | [diff] [blame^] | 1261 | mutex_unlock(&ici->host_lock); |
Guennadi Liakhovetski | 7705b6d | 2012-03-14 07:22:07 -0300 | [diff] [blame] | 1262 | eadd: |
Alberto Panizzo | 96e442c | 2010-12-02 07:43:37 -0300 | [diff] [blame] | 1263 | ereg: |
Hans Verkuil | ee02da6 | 2011-09-06 12:36:39 -0300 | [diff] [blame] | 1264 | v4l2_ctrl_handler_free(&icd->ctrl_handler); |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 1265 | return ret; |
| 1266 | } |
| 1267 | |
Guennadi Liakhovetski | 5d28d52 | 2009-12-11 11:15:05 -0300 | [diff] [blame] | 1268 | /* |
| 1269 | * This is called on device_unregister, which only means we have to disconnect |
| 1270 | * from the host, but not remove ourselves from the device list |
| 1271 | */ |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 1272 | static int soc_camera_remove(struct soc_camera_device *icd) |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 1273 | { |
Guennadi Liakhovetski | 40e2e09 | 2009-08-25 11:28:22 -0300 | [diff] [blame] | 1274 | struct soc_camera_link *icl = to_soc_camera_link(icd); |
| 1275 | struct video_device *vdev = icd->vdev; |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 1276 | |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 1277 | BUG_ON(!icd->parent); |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 1278 | |
Hans Verkuil | ee02da6 | 2011-09-06 12:36:39 -0300 | [diff] [blame] | 1279 | v4l2_ctrl_handler_free(&icd->ctrl_handler); |
Guennadi Liakhovetski | 40e2e09 | 2009-08-25 11:28:22 -0300 | [diff] [blame] | 1280 | if (vdev) { |
Guennadi Liakhovetski | 40e2e09 | 2009-08-25 11:28:22 -0300 | [diff] [blame] | 1281 | video_unregister_device(vdev); |
| 1282 | icd->vdev = NULL; |
Guennadi Liakhovetski | 40e2e09 | 2009-08-25 11:28:22 -0300 | [diff] [blame] | 1283 | } |
| 1284 | |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 1285 | if (icl->board_info) { |
Guennadi Liakhovetski | 40e2e09 | 2009-08-25 11:28:22 -0300 | [diff] [blame] | 1286 | soc_camera_free_i2c(icd); |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 1287 | } else { |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 1288 | struct device_driver *drv = to_soc_camera_control(icd)->driver; |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 1289 | if (drv) { |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 1290 | icl->del_device(icd); |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 1291 | module_put(drv->owner); |
| 1292 | } |
| 1293 | } |
Guennadi Liakhovetski | fa48984 | 2009-08-25 11:46:43 -0300 | [diff] [blame] | 1294 | soc_camera_free_user_formats(icd); |
Guennadi Liakhovetski | 025c18a | 2009-03-13 06:08:20 -0300 | [diff] [blame] | 1295 | |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 1296 | return 0; |
| 1297 | } |
| 1298 | |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 1299 | static int default_cropcap(struct soc_camera_device *icd, |
| 1300 | struct v4l2_cropcap *a) |
| 1301 | { |
| 1302 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); |
| 1303 | return v4l2_subdev_call(sd, video, cropcap, a); |
| 1304 | } |
| 1305 | |
| 1306 | static int default_g_crop(struct soc_camera_device *icd, struct v4l2_crop *a) |
| 1307 | { |
| 1308 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); |
| 1309 | return v4l2_subdev_call(sd, video, g_crop, a); |
| 1310 | } |
| 1311 | |
Hans Verkuil | 4f99659 | 2012-09-05 05:10:48 -0300 | [diff] [blame] | 1312 | static int default_s_crop(struct soc_camera_device *icd, const struct v4l2_crop *a) |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 1313 | { |
| 1314 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); |
| 1315 | return v4l2_subdev_call(sd, video, s_crop, a); |
| 1316 | } |
| 1317 | |
Janusz Krzysztofik | 06e1782 | 2010-09-10 22:26:16 -0300 | [diff] [blame] | 1318 | static int default_g_parm(struct soc_camera_device *icd, |
| 1319 | struct v4l2_streamparm *parm) |
| 1320 | { |
| 1321 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); |
| 1322 | return v4l2_subdev_call(sd, video, g_parm, parm); |
| 1323 | } |
| 1324 | |
| 1325 | static int default_s_parm(struct soc_camera_device *icd, |
| 1326 | struct v4l2_streamparm *parm) |
| 1327 | { |
| 1328 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); |
| 1329 | return v4l2_subdev_call(sd, video, s_parm, parm); |
| 1330 | } |
| 1331 | |
Guennadi Liakhovetski | ad3537b | 2012-05-08 13:00:51 -0300 | [diff] [blame] | 1332 | static int default_enum_framesizes(struct soc_camera_device *icd, |
| 1333 | struct v4l2_frmsizeenum *fsize) |
Qing Xu | ed5b65d | 2011-01-20 05:19:40 -0300 | [diff] [blame] | 1334 | { |
| 1335 | int ret; |
| 1336 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); |
| 1337 | const struct soc_camera_format_xlate *xlate; |
| 1338 | __u32 pixfmt = fsize->pixel_format; |
| 1339 | struct v4l2_frmsizeenum fsize_mbus = *fsize; |
| 1340 | |
| 1341 | xlate = soc_camera_xlate_by_fourcc(icd, pixfmt); |
| 1342 | if (!xlate) |
| 1343 | return -EINVAL; |
| 1344 | /* map xlate-code to pixel_format, sensor only handle xlate-code*/ |
| 1345 | fsize_mbus.pixel_format = xlate->code; |
| 1346 | |
Guennadi Liakhovetski | 9633c08 | 2012-05-08 17:41:33 -0300 | [diff] [blame] | 1347 | ret = v4l2_subdev_call(sd, video, enum_framesizes, &fsize_mbus); |
Qing Xu | ed5b65d | 2011-01-20 05:19:40 -0300 | [diff] [blame] | 1348 | if (ret < 0) |
| 1349 | return ret; |
| 1350 | |
| 1351 | *fsize = fsize_mbus; |
| 1352 | fsize->pixel_format = pixfmt; |
| 1353 | |
| 1354 | return 0; |
| 1355 | } |
| 1356 | |
Guennadi Liakhovetski | b8d9904 | 2008-04-04 13:41:25 -0300 | [diff] [blame] | 1357 | int soc_camera_host_register(struct soc_camera_host *ici) |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 1358 | { |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 1359 | struct soc_camera_host *ix; |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 1360 | int ret; |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 1361 | |
Guennadi Liakhovetski | 64f5905 | 2008-12-18 11:51:55 -0300 | [diff] [blame] | 1362 | if (!ici || !ici->ops || |
| 1363 | !ici->ops->try_fmt || |
| 1364 | !ici->ops->set_fmt || |
| 1365 | !ici->ops->set_bus_param || |
| 1366 | !ici->ops->querycap || |
Guennadi Liakhovetski | 592c2ab | 2011-01-29 12:44:51 -0300 | [diff] [blame] | 1367 | ((!ici->ops->init_videobuf || |
| 1368 | !ici->ops->reqbufs) && |
| 1369 | !ici->ops->init_videobuf2) || |
Guennadi Liakhovetski | 64f5905 | 2008-12-18 11:51:55 -0300 | [diff] [blame] | 1370 | !ici->ops->add || |
| 1371 | !ici->ops->remove || |
Guennadi Liakhovetski | eff505f | 2009-04-24 12:55:48 -0300 | [diff] [blame] | 1372 | !ici->ops->poll || |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 1373 | !ici->v4l2_dev.dev) |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 1374 | return -EINVAL; |
| 1375 | |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 1376 | if (!ici->ops->set_crop) |
| 1377 | ici->ops->set_crop = default_s_crop; |
| 1378 | if (!ici->ops->get_crop) |
| 1379 | ici->ops->get_crop = default_g_crop; |
| 1380 | if (!ici->ops->cropcap) |
| 1381 | ici->ops->cropcap = default_cropcap; |
Janusz Krzysztofik | 06e1782 | 2010-09-10 22:26:16 -0300 | [diff] [blame] | 1382 | if (!ici->ops->set_parm) |
| 1383 | ici->ops->set_parm = default_s_parm; |
| 1384 | if (!ici->ops->get_parm) |
| 1385 | ici->ops->get_parm = default_g_parm; |
Guennadi Liakhovetski | ad3537b | 2012-05-08 13:00:51 -0300 | [diff] [blame] | 1386 | if (!ici->ops->enum_framesizes) |
| 1387 | ici->ops->enum_framesizes = default_enum_framesizes; |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 1388 | |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 1389 | mutex_lock(&list_lock); |
| 1390 | list_for_each_entry(ix, &hosts, list) { |
| 1391 | if (ix->nr == ici->nr) { |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 1392 | ret = -EBUSY; |
| 1393 | goto edevreg; |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 1394 | } |
| 1395 | } |
| 1396 | |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 1397 | ret = v4l2_device_register(ici->v4l2_dev.dev, &ici->v4l2_dev); |
| 1398 | if (ret < 0) |
| 1399 | goto edevreg; |
Guennadi Liakhovetski | eff505f | 2009-04-24 12:55:48 -0300 | [diff] [blame] | 1400 | |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 1401 | list_add_tail(&ici->list, &hosts); |
| 1402 | mutex_unlock(&list_lock); |
| 1403 | |
Guennadi Liakhovetski | 2f9a0c8 | 2012-04-18 06:43:09 -0300 | [diff] [blame] | 1404 | mutex_init(&ici->host_lock); |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 1405 | scan_add_host(ici); |
| 1406 | |
| 1407 | return 0; |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 1408 | |
| 1409 | edevreg: |
| 1410 | mutex_unlock(&list_lock); |
| 1411 | return ret; |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 1412 | } |
| 1413 | EXPORT_SYMBOL(soc_camera_host_register); |
| 1414 | |
| 1415 | /* Unregister all clients! */ |
| 1416 | void soc_camera_host_unregister(struct soc_camera_host *ici) |
| 1417 | { |
| 1418 | struct soc_camera_device *icd; |
| 1419 | |
| 1420 | mutex_lock(&list_lock); |
| 1421 | |
| 1422 | list_del(&ici->list); |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 1423 | list_for_each_entry(icd, &devices, list) |
| 1424 | if (icd->iface == ici->nr && to_soc_camera_control(icd)) |
| 1425 | soc_camera_remove(icd); |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 1426 | |
| 1427 | mutex_unlock(&list_lock); |
| 1428 | |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 1429 | v4l2_device_unregister(&ici->v4l2_dev); |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 1430 | } |
| 1431 | EXPORT_SYMBOL(soc_camera_host_unregister); |
| 1432 | |
| 1433 | /* Image capture device */ |
Guennadi Liakhovetski | 40e2e09 | 2009-08-25 11:28:22 -0300 | [diff] [blame] | 1434 | static int soc_camera_device_register(struct soc_camera_device *icd) |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 1435 | { |
| 1436 | struct soc_camera_device *ix; |
| 1437 | int num = -1, i; |
| 1438 | |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 1439 | for (i = 0; i < 256 && num < 0; i++) { |
| 1440 | num = i; |
Guennadi Liakhovetski | 40e2e09 | 2009-08-25 11:28:22 -0300 | [diff] [blame] | 1441 | /* Check if this index is available on this interface */ |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 1442 | list_for_each_entry(ix, &devices, list) { |
| 1443 | if (ix->iface == icd->iface && ix->devnum == i) { |
| 1444 | num = -1; |
| 1445 | break; |
| 1446 | } |
| 1447 | } |
| 1448 | } |
| 1449 | |
| 1450 | if (num < 0) |
Guennadi Liakhovetski | 5d28d52 | 2009-12-11 11:15:05 -0300 | [diff] [blame] | 1451 | /* |
| 1452 | * ok, we have 256 cameras on this host... |
| 1453 | * man, stay reasonable... |
| 1454 | */ |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 1455 | return -ENOMEM; |
| 1456 | |
Guennadi Liakhovetski | 64ff9ba | 2009-11-09 16:12:37 -0300 | [diff] [blame] | 1457 | icd->devnum = num; |
Guennadi Liakhovetski | 64f5905 | 2008-12-18 11:51:55 -0300 | [diff] [blame] | 1458 | icd->use_count = 0; |
| 1459 | icd->host_priv = NULL; |
Guennadi Liakhovetski | 1c3bb74 | 2008-12-18 12:28:54 -0300 | [diff] [blame] | 1460 | mutex_init(&icd->video_lock); |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 1461 | |
Guennadi Liakhovetski | 40e2e09 | 2009-08-25 11:28:22 -0300 | [diff] [blame] | 1462 | list_add_tail(&icd->list, &devices); |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 1463 | |
Guennadi Liakhovetski | 40e2e09 | 2009-08-25 11:28:22 -0300 | [diff] [blame] | 1464 | return 0; |
| 1465 | } |
| 1466 | |
Hans Verkuil | a399810 | 2008-07-21 02:57:38 -0300 | [diff] [blame] | 1467 | static const struct v4l2_ioctl_ops soc_camera_ioctl_ops = { |
| 1468 | .vidioc_querycap = soc_camera_querycap, |
Guennadi Liakhovetski | 7ae77ee | 2011-09-28 09:25:28 -0300 | [diff] [blame] | 1469 | .vidioc_try_fmt_vid_cap = soc_camera_try_fmt_vid_cap, |
Hans Verkuil | a399810 | 2008-07-21 02:57:38 -0300 | [diff] [blame] | 1470 | .vidioc_g_fmt_vid_cap = soc_camera_g_fmt_vid_cap, |
Hans Verkuil | a399810 | 2008-07-21 02:57:38 -0300 | [diff] [blame] | 1471 | .vidioc_s_fmt_vid_cap = soc_camera_s_fmt_vid_cap, |
Guennadi Liakhovetski | 7ae77ee | 2011-09-28 09:25:28 -0300 | [diff] [blame] | 1472 | .vidioc_enum_fmt_vid_cap = soc_camera_enum_fmt_vid_cap, |
Hans Verkuil | a399810 | 2008-07-21 02:57:38 -0300 | [diff] [blame] | 1473 | .vidioc_enum_input = soc_camera_enum_input, |
| 1474 | .vidioc_g_input = soc_camera_g_input, |
| 1475 | .vidioc_s_input = soc_camera_s_input, |
| 1476 | .vidioc_s_std = soc_camera_s_std, |
Guennadi Liakhovetski | 2f0babb | 2011-09-09 13:39:20 -0300 | [diff] [blame] | 1477 | .vidioc_g_std = soc_camera_g_std, |
Guennadi Liakhovetski | ad3537b | 2012-05-08 13:00:51 -0300 | [diff] [blame] | 1478 | .vidioc_enum_framesizes = soc_camera_enum_framesizes, |
Hans Verkuil | a399810 | 2008-07-21 02:57:38 -0300 | [diff] [blame] | 1479 | .vidioc_reqbufs = soc_camera_reqbufs, |
Hans Verkuil | a399810 | 2008-07-21 02:57:38 -0300 | [diff] [blame] | 1480 | .vidioc_querybuf = soc_camera_querybuf, |
| 1481 | .vidioc_qbuf = soc_camera_qbuf, |
| 1482 | .vidioc_dqbuf = soc_camera_dqbuf, |
Guennadi Liakhovetski | 7ae77ee | 2011-09-28 09:25:28 -0300 | [diff] [blame] | 1483 | .vidioc_create_bufs = soc_camera_create_bufs, |
| 1484 | .vidioc_prepare_buf = soc_camera_prepare_buf, |
Hans Verkuil | a399810 | 2008-07-21 02:57:38 -0300 | [diff] [blame] | 1485 | .vidioc_streamon = soc_camera_streamon, |
| 1486 | .vidioc_streamoff = soc_camera_streamoff, |
Hans Verkuil | a399810 | 2008-07-21 02:57:38 -0300 | [diff] [blame] | 1487 | .vidioc_cropcap = soc_camera_cropcap, |
| 1488 | .vidioc_g_crop = soc_camera_g_crop, |
| 1489 | .vidioc_s_crop = soc_camera_s_crop, |
Guennadi Liakhovetski | 3bfb410 | 2012-06-22 13:40:08 -0300 | [diff] [blame] | 1490 | .vidioc_g_selection = soc_camera_g_selection, |
| 1491 | .vidioc_s_selection = soc_camera_s_selection, |
Guennadi Liakhovetski | c9f6ef6 | 2010-02-09 18:00:30 +0100 | [diff] [blame] | 1492 | .vidioc_g_parm = soc_camera_g_parm, |
| 1493 | .vidioc_s_parm = soc_camera_s_parm, |
Hans Verkuil | a399810 | 2008-07-21 02:57:38 -0300 | [diff] [blame] | 1494 | .vidioc_g_chip_ident = soc_camera_g_chip_ident, |
| 1495 | #ifdef CONFIG_VIDEO_ADV_DEBUG |
| 1496 | .vidioc_g_register = soc_camera_g_register, |
| 1497 | .vidioc_s_register = soc_camera_s_register, |
| 1498 | #endif |
| 1499 | }; |
| 1500 | |
Guennadi Liakhovetski | 40e2e09 | 2009-08-25 11:28:22 -0300 | [diff] [blame] | 1501 | static int video_dev_create(struct soc_camera_device *icd) |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 1502 | { |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 1503 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
Guennadi Liakhovetski | 40e2e09 | 2009-08-25 11:28:22 -0300 | [diff] [blame] | 1504 | struct video_device *vdev = video_device_alloc(); |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 1505 | |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 1506 | if (!vdev) |
Guennadi Liakhovetski | 40e2e09 | 2009-08-25 11:28:22 -0300 | [diff] [blame] | 1507 | return -ENOMEM; |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 1508 | |
| 1509 | strlcpy(vdev->name, ici->drv_name, sizeof(vdev->name)); |
Guennadi Liakhovetski | 1c3bb74 | 2008-12-18 12:28:54 -0300 | [diff] [blame] | 1510 | |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 1511 | vdev->parent = icd->pdev; |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 1512 | vdev->current_norm = V4L2_STD_UNKNOWN; |
| 1513 | vdev->fops = &soc_camera_fops; |
Hans Verkuil | a399810 | 2008-07-21 02:57:38 -0300 | [diff] [blame] | 1514 | vdev->ioctl_ops = &soc_camera_ioctl_ops; |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 1515 | vdev->release = video_device_release; |
Guennadi Liakhovetski | 40e2e09 | 2009-08-25 11:28:22 -0300 | [diff] [blame] | 1516 | vdev->tvnorms = V4L2_STD_UNKNOWN; |
Hans Verkuil | ee02da6 | 2011-09-06 12:36:39 -0300 | [diff] [blame] | 1517 | vdev->ctrl_handler = &icd->ctrl_handler; |
Guennadi Liakhovetski | 7a05dfe | 2011-06-29 07:46:40 -0300 | [diff] [blame] | 1518 | vdev->lock = &icd->video_lock; |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 1519 | |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 1520 | icd->vdev = vdev; |
| 1521 | |
| 1522 | return 0; |
Guennadi Liakhovetski | 40e2e09 | 2009-08-25 11:28:22 -0300 | [diff] [blame] | 1523 | } |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 1524 | |
Guennadi Liakhovetski | 40e2e09 | 2009-08-25 11:28:22 -0300 | [diff] [blame] | 1525 | /* |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 1526 | * Called from soc_camera_probe() above (with .video_lock held???) |
Guennadi Liakhovetski | 40e2e09 | 2009-08-25 11:28:22 -0300 | [diff] [blame] | 1527 | */ |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 1528 | static int soc_camera_video_start(struct soc_camera_device *icd) |
Guennadi Liakhovetski | 40e2e09 | 2009-08-25 11:28:22 -0300 | [diff] [blame] | 1529 | { |
Mauro Carvalho Chehab | d364ee4 | 2011-06-01 15:03:56 -0300 | [diff] [blame] | 1530 | const struct device_type *type = icd->vdev->dev.type; |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 1531 | int ret; |
Guennadi Liakhovetski | 40e2e09 | 2009-08-25 11:28:22 -0300 | [diff] [blame] | 1532 | |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 1533 | if (!icd->parent) |
Guennadi Liakhovetski | 40e2e09 | 2009-08-25 11:28:22 -0300 | [diff] [blame] | 1534 | return -ENODEV; |
| 1535 | |
Laurent Pinchart | 46b2109 | 2009-12-10 11:51:38 -0200 | [diff] [blame] | 1536 | ret = video_register_device(icd->vdev, VFL_TYPE_GRABBER, -1); |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 1537 | if (ret < 0) { |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 1538 | dev_err(icd->pdev, "video_register_device failed: %d\n", ret); |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 1539 | return ret; |
| 1540 | } |
Guennadi Liakhovetski | 40e2e09 | 2009-08-25 11:28:22 -0300 | [diff] [blame] | 1541 | |
Mauro Carvalho Chehab | 4f9fb5e | 2010-05-18 00:46:09 -0300 | [diff] [blame] | 1542 | /* Restore device type, possibly set by the subdevice driver */ |
| 1543 | icd->vdev->dev.type = type; |
| 1544 | |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 1545 | return 0; |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 1546 | } |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 1547 | |
Guennadi Liakhovetski | c41deba | 2009-08-25 11:06:21 -0300 | [diff] [blame] | 1548 | static int __devinit soc_camera_pdrv_probe(struct platform_device *pdev) |
| 1549 | { |
| 1550 | struct soc_camera_link *icl = pdev->dev.platform_data; |
Guennadi Liakhovetski | 40e2e09 | 2009-08-25 11:28:22 -0300 | [diff] [blame] | 1551 | struct soc_camera_device *icd; |
Guennadi Liakhovetski | c41deba | 2009-08-25 11:06:21 -0300 | [diff] [blame] | 1552 | |
| 1553 | if (!icl) |
| 1554 | return -EINVAL; |
| 1555 | |
Sachin Kamat | 02249369 | 2012-09-05 08:25:26 -0300 | [diff] [blame] | 1556 | icd = devm_kzalloc(&pdev->dev, sizeof(*icd), GFP_KERNEL); |
Guennadi Liakhovetski | 40e2e09 | 2009-08-25 11:28:22 -0300 | [diff] [blame] | 1557 | if (!icd) |
| 1558 | return -ENOMEM; |
Guennadi Liakhovetski | c41deba | 2009-08-25 11:06:21 -0300 | [diff] [blame] | 1559 | |
Guennadi Liakhovetski | 40e2e09 | 2009-08-25 11:28:22 -0300 | [diff] [blame] | 1560 | icd->iface = icl->bus_id; |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 1561 | icd->link = icl; |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 1562 | icd->pdev = &pdev->dev; |
Guennadi Liakhovetski | 40e2e09 | 2009-08-25 11:28:22 -0300 | [diff] [blame] | 1563 | platform_set_drvdata(pdev, icd); |
Guennadi Liakhovetski | 40e2e09 | 2009-08-25 11:28:22 -0300 | [diff] [blame] | 1564 | |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 1565 | icd->user_width = DEFAULT_WIDTH; |
| 1566 | icd->user_height = DEFAULT_HEIGHT; |
| 1567 | |
Sachin Kamat | 02249369 | 2012-09-05 08:25:26 -0300 | [diff] [blame] | 1568 | return soc_camera_device_register(icd); |
Guennadi Liakhovetski | c41deba | 2009-08-25 11:06:21 -0300 | [diff] [blame] | 1569 | } |
| 1570 | |
Guennadi Liakhovetski | 5d28d52 | 2009-12-11 11:15:05 -0300 | [diff] [blame] | 1571 | /* |
| 1572 | * Only called on rmmod for each platform device, since they are not |
Guennadi Liakhovetski | 40e2e09 | 2009-08-25 11:28:22 -0300 | [diff] [blame] | 1573 | * hot-pluggable. Now we know, that all our users - hosts and devices have |
Guennadi Liakhovetski | 5d28d52 | 2009-12-11 11:15:05 -0300 | [diff] [blame] | 1574 | * been unloaded already |
| 1575 | */ |
Guennadi Liakhovetski | c41deba | 2009-08-25 11:06:21 -0300 | [diff] [blame] | 1576 | static int __devexit soc_camera_pdrv_remove(struct platform_device *pdev) |
| 1577 | { |
Guennadi Liakhovetski | 40e2e09 | 2009-08-25 11:28:22 -0300 | [diff] [blame] | 1578 | struct soc_camera_device *icd = platform_get_drvdata(pdev); |
Guennadi Liakhovetski | c41deba | 2009-08-25 11:06:21 -0300 | [diff] [blame] | 1579 | |
Guennadi Liakhovetski | 40e2e09 | 2009-08-25 11:28:22 -0300 | [diff] [blame] | 1580 | if (!icd) |
| 1581 | return -EINVAL; |
| 1582 | |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 1583 | list_del(&icd->list); |
Guennadi Liakhovetski | 40e2e09 | 2009-08-25 11:28:22 -0300 | [diff] [blame] | 1584 | |
Guennadi Liakhovetski | 0fd327b | 2009-05-07 13:25:32 -0300 | [diff] [blame] | 1585 | return 0; |
| 1586 | } |
| 1587 | |
| 1588 | static struct platform_driver __refdata soc_camera_pdrv = { |
Laurent Pinchart | 1858c99 | 2012-07-18 10:53:56 -0300 | [diff] [blame] | 1589 | .probe = soc_camera_pdrv_probe, |
Guennadi Liakhovetski | 40e2e09 | 2009-08-25 11:28:22 -0300 | [diff] [blame] | 1590 | .remove = __devexit_p(soc_camera_pdrv_remove), |
| 1591 | .driver = { |
| 1592 | .name = "soc-camera-pdrv", |
| 1593 | .owner = THIS_MODULE, |
Guennadi Liakhovetski | 0fd327b | 2009-05-07 13:25:32 -0300 | [diff] [blame] | 1594 | }, |
| 1595 | }; |
| 1596 | |
Sachin Kamat | ec0341b | 2012-09-05 08:25:27 -0300 | [diff] [blame] | 1597 | module_platform_driver(soc_camera_pdrv); |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 1598 | |
| 1599 | MODULE_DESCRIPTION("Image capture bus driver"); |
| 1600 | MODULE_AUTHOR("Guennadi Liakhovetski <kernel@pengutronix.de>"); |
| 1601 | MODULE_LICENSE("GPL"); |
Guennadi Liakhovetski | 0fd327b | 2009-05-07 13:25:32 -0300 | [diff] [blame] | 1602 | MODULE_ALIAS("platform:soc-camera-pdrv"); |