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 | dd669e9 | 2012-12-24 09:31:33 -0300 | [diff] [blame^] | 386 | /* Always entered with .host_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 | dd669e9 | 2012-12-24 09:31:33 -0300 | [diff] [blame^] | 453 | /* Always entered with .host_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 | |
Guennadi Liakhovetski | dd669e9 | 2012-12-24 09:31:33 -0300 | [diff] [blame^] | 529 | if (mutex_lock_interruptible(&ici->host_lock)) |
Hans Verkuil | 8422b08 | 2012-06-24 06:49:09 -0300 | [diff] [blame] | 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 | b8d9904 | 2008-04-04 13:41:25 -0300 | [diff] [blame] | 558 | ret = ici->ops->add(icd); |
Guennadi Liakhovetski | 9dc4e48 | 2008-04-22 14:45:32 -0300 | [diff] [blame] | 559 | if (ret < 0) { |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 560 | dev_err(icd->pdev, "Couldn't activate the camera: %d\n", ret); |
Guennadi Liakhovetski | 9dc4e48 | 2008-04-22 14:45:32 -0300 | [diff] [blame] | 561 | goto eiciadd; |
| 562 | } |
Guennadi Liakhovetski | df2ed07 | 2009-03-13 06:08:20 -0300 | [diff] [blame] | 563 | |
Laurent Pinchart | 4ec10ba | 2012-07-20 10:19:50 -0300 | [diff] [blame] | 564 | ret = __soc_camera_power_on(icd); |
Guennadi Liakhovetski | 7705b6d | 2012-03-14 07:22:07 -0300 | [diff] [blame] | 565 | if (ret < 0) |
| 566 | goto epower; |
| 567 | |
Mauro Carvalho Chehab | 4f9fb5e | 2010-05-18 00:46:09 -0300 | [diff] [blame] | 568 | pm_runtime_enable(&icd->vdev->dev); |
| 569 | ret = pm_runtime_resume(&icd->vdev->dev); |
| 570 | if (ret < 0 && ret != -ENOSYS) |
| 571 | goto eresume; |
| 572 | |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 573 | /* |
| 574 | * Try to configure with default parameters. Notice: this is the |
| 575 | * very first open, so, we cannot race against other calls, |
| 576 | * apart from someone else calling open() simultaneously, but |
Guennadi Liakhovetski | dd669e9 | 2012-12-24 09:31:33 -0300 | [diff] [blame^] | 577 | * .host_lock is protecting us against it. |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 578 | */ |
Guennadi Liakhovetski | 57bee29 | 2010-08-17 14:29:51 -0300 | [diff] [blame] | 579 | ret = soc_camera_set_fmt(icd, &f); |
Guennadi Liakhovetski | df2ed07 | 2009-03-13 06:08:20 -0300 | [diff] [blame] | 580 | if (ret < 0) |
| 581 | goto esfmt; |
Guennadi Liakhovetski | 24d8c02 | 2010-12-25 18:29:52 -0300 | [diff] [blame] | 582 | |
Guennadi Liakhovetski | 592c2ab | 2011-01-29 12:44:51 -0300 | [diff] [blame] | 583 | if (ici->ops->init_videobuf) { |
| 584 | ici->ops->init_videobuf(&icd->vb_vidq, icd); |
| 585 | } else { |
| 586 | ret = ici->ops->init_videobuf2(&icd->vb2_vidq, icd); |
| 587 | if (ret < 0) |
| 588 | goto einitvb; |
| 589 | } |
Hans Verkuil | ee02da6 | 2011-09-06 12:36:39 -0300 | [diff] [blame] | 590 | v4l2_ctrl_handler_setup(&icd->ctrl_handler); |
Guennadi Liakhovetski | 9dc4e48 | 2008-04-22 14:45:32 -0300 | [diff] [blame] | 591 | } |
Guennadi Liakhovetski | dd669e9 | 2012-12-24 09:31:33 -0300 | [diff] [blame^] | 592 | mutex_unlock(&ici->host_lock); |
Guennadi Liakhovetski | 9dc4e48 | 2008-04-22 14:45:32 -0300 | [diff] [blame] | 593 | |
Guennadi Liakhovetski | 57bee29 | 2010-08-17 14:29:51 -0300 | [diff] [blame] | 594 | file->private_data = icd; |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 595 | dev_dbg(icd->pdev, "camera device open\n"); |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 596 | |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 597 | return 0; |
| 598 | |
Guennadi Liakhovetski | df2ed07 | 2009-03-13 06:08:20 -0300 | [diff] [blame] | 599 | /* |
Guennadi Liakhovetski | dd669e9 | 2012-12-24 09:31:33 -0300 | [diff] [blame^] | 600 | * First four errors are entered with the .host_lock held |
Guennadi Liakhovetski | df2ed07 | 2009-03-13 06:08:20 -0300 | [diff] [blame] | 601 | * and use_count == 1 |
| 602 | */ |
Guennadi Liakhovetski | 592c2ab | 2011-01-29 12:44:51 -0300 | [diff] [blame] | 603 | einitvb: |
Guennadi Liakhovetski | df2ed07 | 2009-03-13 06:08:20 -0300 | [diff] [blame] | 604 | esfmt: |
Mauro Carvalho Chehab | 4f9fb5e | 2010-05-18 00:46:09 -0300 | [diff] [blame] | 605 | pm_runtime_disable(&icd->vdev->dev); |
| 606 | eresume: |
Laurent Pinchart | 4ec10ba | 2012-07-20 10:19:50 -0300 | [diff] [blame] | 607 | __soc_camera_power_off(icd); |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 608 | epower: |
Guennadi Liakhovetski | 7705b6d | 2012-03-14 07:22:07 -0300 | [diff] [blame] | 609 | ici->ops->remove(icd); |
| 610 | eiciadd: |
Guennadi Liakhovetski | c2786ad | 2008-12-01 09:45:27 -0300 | [diff] [blame] | 611 | icd->use_count--; |
Guennadi Liakhovetski | b8d9904 | 2008-04-04 13:41:25 -0300 | [diff] [blame] | 612 | module_put(ici->ops->owner); |
Hans Verkuil | 8422b08 | 2012-06-24 06:49:09 -0300 | [diff] [blame] | 613 | emodule: |
Guennadi Liakhovetski | dd669e9 | 2012-12-24 09:31:33 -0300 | [diff] [blame^] | 614 | mutex_unlock(&ici->host_lock); |
Guennadi Liakhovetski | 57bee29 | 2010-08-17 14:29:51 -0300 | [diff] [blame] | 615 | |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 616 | return ret; |
| 617 | } |
| 618 | |
Hans Verkuil | bec4366 | 2008-12-30 06:58:20 -0300 | [diff] [blame] | 619 | static int soc_camera_close(struct file *file) |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 620 | { |
Guennadi Liakhovetski | 57bee29 | 2010-08-17 14:29:51 -0300 | [diff] [blame] | 621 | struct soc_camera_device *icd = file->private_data; |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 622 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 623 | |
Guennadi Liakhovetski | dd669e9 | 2012-12-24 09:31:33 -0300 | [diff] [blame^] | 624 | mutex_lock(&ici->host_lock); |
Guennadi Liakhovetski | 9dc4e48 | 2008-04-22 14:45:32 -0300 | [diff] [blame] | 625 | icd->use_count--; |
Guennadi Liakhovetski | 40e2e09 | 2009-08-25 11:28:22 -0300 | [diff] [blame] | 626 | if (!icd->use_count) { |
Mauro Carvalho Chehab | 4f9fb5e | 2010-05-18 00:46:09 -0300 | [diff] [blame] | 627 | pm_runtime_suspend(&icd->vdev->dev); |
| 628 | pm_runtime_disable(&icd->vdev->dev); |
| 629 | |
Guennadi Liakhovetski | 592c2ab | 2011-01-29 12:44:51 -0300 | [diff] [blame] | 630 | if (ici->ops->init_videobuf2) |
| 631 | vb2_queue_release(&icd->vb2_vidq); |
Lei Wen | 48ecf9f | 2011-11-22 11:04:29 -0300 | [diff] [blame] | 632 | ici->ops->remove(icd); |
Mauro Carvalho Chehab | 4f9fb5e | 2010-05-18 00:46:09 -0300 | [diff] [blame] | 633 | |
Laurent Pinchart | 4ec10ba | 2012-07-20 10:19:50 -0300 | [diff] [blame] | 634 | __soc_camera_power_off(icd); |
Guennadi Liakhovetski | 40e2e09 | 2009-08-25 11:28:22 -0300 | [diff] [blame] | 635 | } |
Guennadi Liakhovetski | 025c18a | 2009-03-13 06:08:20 -0300 | [diff] [blame] | 636 | |
Guennadi Liakhovetski | 57bee29 | 2010-08-17 14:29:51 -0300 | [diff] [blame] | 637 | if (icd->streamer == file) |
| 638 | icd->streamer = NULL; |
Guennadi Liakhovetski | dd669e9 | 2012-12-24 09:31:33 -0300 | [diff] [blame^] | 639 | mutex_unlock(&ici->host_lock); |
Guennadi Liakhovetski | 57bee29 | 2010-08-17 14:29:51 -0300 | [diff] [blame] | 640 | |
Guennadi Liakhovetski | b8d9904 | 2008-04-04 13:41:25 -0300 | [diff] [blame] | 641 | module_put(ici->ops->owner); |
Guennadi Liakhovetski | 9dc4e48 | 2008-04-22 14:45:32 -0300 | [diff] [blame] | 642 | |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 643 | dev_dbg(icd->pdev, "camera device close\n"); |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 644 | |
| 645 | return 0; |
| 646 | } |
| 647 | |
Andrew Morton | aba360d | 2008-04-22 14:45:59 -0300 | [diff] [blame] | 648 | static ssize_t soc_camera_read(struct file *file, char __user *buf, |
Guennadi Liakhovetski | abe4c47 | 2008-12-01 09:44:56 -0300 | [diff] [blame] | 649 | size_t count, loff_t *ppos) |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 650 | { |
Guennadi Liakhovetski | 57bee29 | 2010-08-17 14:29:51 -0300 | [diff] [blame] | 651 | struct soc_camera_device *icd = file->private_data; |
Anatolij Gustschin | 1438be56 | 2012-08-24 11:36:11 -0300 | [diff] [blame] | 652 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
| 653 | |
| 654 | dev_dbg(icd->pdev, "read called, buf %p\n", buf); |
| 655 | |
| 656 | if (ici->ops->init_videobuf2 && icd->vb2_vidq.io_modes & VB2_READ) |
| 657 | return vb2_read(&icd->vb2_vidq, buf, count, ppos, |
| 658 | file->f_flags & O_NONBLOCK); |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 659 | |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 660 | dev_err(icd->pdev, "camera device read not implemented\n"); |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 661 | |
Anatolij Gustschin | 1438be56 | 2012-08-24 11:36:11 -0300 | [diff] [blame] | 662 | return -EINVAL; |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 663 | } |
| 664 | |
| 665 | static int soc_camera_mmap(struct file *file, struct vm_area_struct *vma) |
| 666 | { |
Guennadi Liakhovetski | 57bee29 | 2010-08-17 14:29:51 -0300 | [diff] [blame] | 667 | struct soc_camera_device *icd = file->private_data; |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 668 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 669 | int err; |
| 670 | |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 671 | 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] | 672 | |
Guennadi Liakhovetski | 57bee29 | 2010-08-17 14:29:51 -0300 | [diff] [blame] | 673 | if (icd->streamer != file) |
| 674 | return -EBUSY; |
| 675 | |
Guennadi Liakhovetski | dd669e9 | 2012-12-24 09:31:33 -0300 | [diff] [blame^] | 676 | if (mutex_lock_interruptible(&ici->host_lock)) |
Hans Verkuil | 8422b08 | 2012-06-24 06:49:09 -0300 | [diff] [blame] | 677 | return -ERESTARTSYS; |
Guennadi Liakhovetski | 592c2ab | 2011-01-29 12:44:51 -0300 | [diff] [blame] | 678 | if (ici->ops->init_videobuf) |
| 679 | err = videobuf_mmap_mapper(&icd->vb_vidq, vma); |
| 680 | else |
| 681 | err = vb2_mmap(&icd->vb2_vidq, vma); |
Guennadi Liakhovetski | dd669e9 | 2012-12-24 09:31:33 -0300 | [diff] [blame^] | 682 | mutex_unlock(&ici->host_lock); |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 683 | |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 684 | 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] | 685 | (unsigned long)vma->vm_start, |
| 686 | (unsigned long)vma->vm_end - (unsigned long)vma->vm_start, |
| 687 | err); |
| 688 | |
| 689 | return err; |
| 690 | } |
| 691 | |
| 692 | static unsigned int soc_camera_poll(struct file *file, poll_table *pt) |
| 693 | { |
Guennadi Liakhovetski | 57bee29 | 2010-08-17 14:29:51 -0300 | [diff] [blame] | 694 | struct soc_camera_device *icd = file->private_data; |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 695 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
Hans Verkuil | 8422b08 | 2012-06-24 06:49:09 -0300 | [diff] [blame] | 696 | unsigned res = POLLERR; |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 697 | |
Guennadi Liakhovetski | 57bee29 | 2010-08-17 14:29:51 -0300 | [diff] [blame] | 698 | if (icd->streamer != file) |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 699 | return POLLERR; |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 700 | |
Guennadi Liakhovetski | dd669e9 | 2012-12-24 09:31:33 -0300 | [diff] [blame^] | 701 | mutex_lock(&ici->host_lock); |
Hans Verkuil | 8422b08 | 2012-06-24 06:49:09 -0300 | [diff] [blame] | 702 | if (ici->ops->init_videobuf && list_empty(&icd->vb_vidq.stream)) |
| 703 | dev_err(icd->pdev, "Trying to poll with no queued buffers!\n"); |
| 704 | else |
| 705 | res = ici->ops->poll(file, pt); |
Guennadi Liakhovetski | dd669e9 | 2012-12-24 09:31:33 -0300 | [diff] [blame^] | 706 | mutex_unlock(&ici->host_lock); |
Hans Verkuil | 8422b08 | 2012-06-24 06:49:09 -0300 | [diff] [blame] | 707 | return res; |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 708 | } |
| 709 | |
Guennadi Liakhovetski | 592c2ab | 2011-01-29 12:44:51 -0300 | [diff] [blame] | 710 | void soc_camera_lock(struct vb2_queue *vq) |
| 711 | { |
| 712 | struct soc_camera_device *icd = vb2_get_drv_priv(vq); |
Guennadi Liakhovetski | dd669e9 | 2012-12-24 09:31:33 -0300 | [diff] [blame^] | 713 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
| 714 | mutex_lock(&ici->host_lock); |
Guennadi Liakhovetski | 592c2ab | 2011-01-29 12:44:51 -0300 | [diff] [blame] | 715 | } |
| 716 | EXPORT_SYMBOL(soc_camera_lock); |
| 717 | |
| 718 | void soc_camera_unlock(struct vb2_queue *vq) |
| 719 | { |
| 720 | struct soc_camera_device *icd = vb2_get_drv_priv(vq); |
Guennadi Liakhovetski | dd669e9 | 2012-12-24 09:31:33 -0300 | [diff] [blame^] | 721 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
| 722 | mutex_unlock(&ici->host_lock); |
Guennadi Liakhovetski | 592c2ab | 2011-01-29 12:44:51 -0300 | [diff] [blame] | 723 | } |
| 724 | EXPORT_SYMBOL(soc_camera_unlock); |
| 725 | |
Hans Verkuil | bec4366 | 2008-12-30 06:58:20 -0300 | [diff] [blame] | 726 | static struct v4l2_file_operations soc_camera_fops = { |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 727 | .owner = THIS_MODULE, |
| 728 | .open = soc_camera_open, |
| 729 | .release = soc_camera_close, |
Guennadi Liakhovetski | b6a633c | 2010-12-25 17:40:26 -0300 | [diff] [blame] | 730 | .unlocked_ioctl = video_ioctl2, |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 731 | .read = soc_camera_read, |
| 732 | .mmap = soc_camera_mmap, |
| 733 | .poll = soc_camera_poll, |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 734 | }; |
| 735 | |
Hans Verkuil | 7293789 | 2008-06-01 10:35:18 -0300 | [diff] [blame] | 736 | 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] | 737 | struct v4l2_format *f) |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 738 | { |
Guennadi Liakhovetski | 57bee29 | 2010-08-17 14:29:51 -0300 | [diff] [blame] | 739 | struct soc_camera_device *icd = file->private_data; |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 740 | int ret; |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 741 | |
| 742 | WARN_ON(priv != file->private_data); |
| 743 | |
Guennadi Liakhovetski | d366d4a | 2011-03-21 06:33:25 -0300 | [diff] [blame] | 744 | if (f->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) { |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 745 | dev_warn(icd->pdev, "Wrong buf-type %d\n", f->type); |
Guennadi Liakhovetski | d366d4a | 2011-03-21 06:33:25 -0300 | [diff] [blame] | 746 | return -EINVAL; |
| 747 | } |
| 748 | |
Guennadi Liakhovetski | 57bee29 | 2010-08-17 14:29:51 -0300 | [diff] [blame] | 749 | if (icd->streamer && icd->streamer != file) |
| 750 | return -EBUSY; |
Guennadi Liakhovetski | 1c3bb74 | 2008-12-18 12:28:54 -0300 | [diff] [blame] | 751 | |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 752 | if (is_streaming(to_soc_camera_host(icd->parent), icd)) { |
| 753 | dev_err(icd->pdev, "S_FMT denied: queue initialised\n"); |
Guennadi Liakhovetski | b6a633c | 2010-12-25 17:40:26 -0300 | [diff] [blame] | 754 | return -EBUSY; |
Guennadi Liakhovetski | 1c3bb74 | 2008-12-18 12:28:54 -0300 | [diff] [blame] | 755 | } |
| 756 | |
Guennadi Liakhovetski | 57bee29 | 2010-08-17 14:29:51 -0300 | [diff] [blame] | 757 | ret = soc_camera_set_fmt(icd, f); |
| 758 | |
| 759 | if (!ret && !icd->streamer) |
| 760 | icd->streamer = file; |
Guennadi Liakhovetski | 1c3bb74 | 2008-12-18 12:28:54 -0300 | [diff] [blame] | 761 | |
Guennadi Liakhovetski | 1c3bb74 | 2008-12-18 12:28:54 -0300 | [diff] [blame] | 762 | return ret; |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 763 | } |
| 764 | |
Hans Verkuil | 7293789 | 2008-06-01 10:35:18 -0300 | [diff] [blame] | 765 | 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] | 766 | struct v4l2_fmtdesc *f) |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 767 | { |
Guennadi Liakhovetski | 57bee29 | 2010-08-17 14:29:51 -0300 | [diff] [blame] | 768 | struct soc_camera_device *icd = file->private_data; |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 769 | const struct soc_mbus_pixelfmt *format; |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 770 | |
| 771 | WARN_ON(priv != file->private_data); |
| 772 | |
Guennadi Liakhovetski | c2786ad | 2008-12-01 09:45:27 -0300 | [diff] [blame] | 773 | if (f->index >= icd->num_user_formats) |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 774 | return -EINVAL; |
| 775 | |
Guennadi Liakhovetski | c2786ad | 2008-12-01 09:45:27 -0300 | [diff] [blame] | 776 | format = icd->user_formats[f->index].host_fmt; |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 777 | |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 778 | if (format->name) |
| 779 | strlcpy(f->description, format->name, sizeof(f->description)); |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 780 | f->pixelformat = format->fourcc; |
| 781 | return 0; |
| 782 | } |
| 783 | |
Hans Verkuil | 7293789 | 2008-06-01 10:35:18 -0300 | [diff] [blame] | 784 | 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] | 785 | struct v4l2_format *f) |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 786 | { |
Guennadi Liakhovetski | 57bee29 | 2010-08-17 14:29:51 -0300 | [diff] [blame] | 787 | struct soc_camera_device *icd = file->private_data; |
Guennadi Liakhovetski | 64f5905 | 2008-12-18 11:51:55 -0300 | [diff] [blame] | 788 | struct v4l2_pix_format *pix = &f->fmt.pix; |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 789 | |
| 790 | WARN_ON(priv != file->private_data); |
| 791 | |
Guennadi Liakhovetski | d366d4a | 2011-03-21 06:33:25 -0300 | [diff] [blame] | 792 | if (f->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) |
| 793 | return -EINVAL; |
| 794 | |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 795 | pix->width = icd->user_width; |
| 796 | pix->height = icd->user_height; |
Sergio Aguirre | 0e4c180 | 2011-03-07 21:49:48 -0300 | [diff] [blame] | 797 | pix->bytesperline = icd->bytesperline; |
| 798 | pix->sizeimage = icd->sizeimage; |
Guennadi Liakhovetski | 592c2ab | 2011-01-29 12:44:51 -0300 | [diff] [blame] | 799 | pix->field = icd->field; |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 800 | pix->pixelformat = icd->current_fmt->host_fmt->fourcc; |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 801 | pix->colorspace = icd->colorspace; |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 802 | dev_dbg(icd->pdev, "current_fmt->fourcc: 0x%08x\n", |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 803 | icd->current_fmt->host_fmt->fourcc); |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 804 | return 0; |
| 805 | } |
| 806 | |
| 807 | static int soc_camera_querycap(struct file *file, void *priv, |
| 808 | struct v4l2_capability *cap) |
| 809 | { |
Guennadi Liakhovetski | 57bee29 | 2010-08-17 14:29:51 -0300 | [diff] [blame] | 810 | struct soc_camera_device *icd = file->private_data; |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 811 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 812 | |
| 813 | WARN_ON(priv != file->private_data); |
| 814 | |
| 815 | strlcpy(cap->driver, ici->drv_name, sizeof(cap->driver)); |
Guennadi Liakhovetski | b8d9904 | 2008-04-04 13:41:25 -0300 | [diff] [blame] | 816 | return ici->ops->querycap(ici, cap); |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 817 | } |
| 818 | |
| 819 | static int soc_camera_streamon(struct file *file, void *priv, |
| 820 | enum v4l2_buf_type i) |
| 821 | { |
Guennadi Liakhovetski | 57bee29 | 2010-08-17 14:29:51 -0300 | [diff] [blame] | 822 | struct soc_camera_device *icd = file->private_data; |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 823 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
Guennadi Liakhovetski | c9c1f1c | 2009-08-25 11:46:59 -0300 | [diff] [blame] | 824 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); |
Guennadi Liakhovetski | 1c3bb74 | 2008-12-18 12:28:54 -0300 | [diff] [blame] | 825 | int ret; |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 826 | |
| 827 | WARN_ON(priv != file->private_data); |
| 828 | |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 829 | if (i != V4L2_BUF_TYPE_VIDEO_CAPTURE) |
| 830 | return -EINVAL; |
| 831 | |
Guennadi Liakhovetski | 57bee29 | 2010-08-17 14:29:51 -0300 | [diff] [blame] | 832 | if (icd->streamer != file) |
| 833 | return -EBUSY; |
| 834 | |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 835 | /* This calls buf_queue from host driver's videobuf_queue_ops */ |
Guennadi Liakhovetski | 592c2ab | 2011-01-29 12:44:51 -0300 | [diff] [blame] | 836 | if (ici->ops->init_videobuf) |
| 837 | ret = videobuf_streamon(&icd->vb_vidq); |
| 838 | else |
| 839 | ret = vb2_streamon(&icd->vb2_vidq, i); |
| 840 | |
Anatolij Gustschin | 7fdbd85 | 2011-01-31 09:19:32 -0300 | [diff] [blame] | 841 | if (!ret) |
| 842 | v4l2_subdev_call(sd, video, s_stream, 1); |
Guennadi Liakhovetski | 1c3bb74 | 2008-12-18 12:28:54 -0300 | [diff] [blame] | 843 | |
Guennadi Liakhovetski | 1c3bb74 | 2008-12-18 12:28:54 -0300 | [diff] [blame] | 844 | return ret; |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 845 | } |
| 846 | |
| 847 | static int soc_camera_streamoff(struct file *file, void *priv, |
| 848 | enum v4l2_buf_type i) |
| 849 | { |
Guennadi Liakhovetski | 57bee29 | 2010-08-17 14:29:51 -0300 | [diff] [blame] | 850 | struct soc_camera_device *icd = file->private_data; |
Guennadi Liakhovetski | c9c1f1c | 2009-08-25 11:46:59 -0300 | [diff] [blame] | 851 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 852 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 853 | |
| 854 | WARN_ON(priv != file->private_data); |
| 855 | |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 856 | if (i != V4L2_BUF_TYPE_VIDEO_CAPTURE) |
| 857 | return -EINVAL; |
| 858 | |
Guennadi Liakhovetski | 57bee29 | 2010-08-17 14:29:51 -0300 | [diff] [blame] | 859 | if (icd->streamer != file) |
| 860 | return -EBUSY; |
| 861 | |
Guennadi Liakhovetski | 5d28d52 | 2009-12-11 11:15:05 -0300 | [diff] [blame] | 862 | /* |
| 863 | * This calls buf_release from host driver's videobuf_queue_ops for all |
| 864 | * remaining buffers. When the last buffer is freed, stop capture |
| 865 | */ |
Guennadi Liakhovetski | 592c2ab | 2011-01-29 12:44:51 -0300 | [diff] [blame] | 866 | if (ici->ops->init_videobuf) |
| 867 | videobuf_streamoff(&icd->vb_vidq); |
| 868 | else |
| 869 | vb2_streamoff(&icd->vb2_vidq, i); |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 870 | |
Guennadi Liakhovetski | c9c1f1c | 2009-08-25 11:46:59 -0300 | [diff] [blame] | 871 | v4l2_subdev_call(sd, video, s_stream, 0); |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 872 | |
| 873 | return 0; |
| 874 | } |
| 875 | |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 876 | static int soc_camera_cropcap(struct file *file, void *fh, |
| 877 | struct v4l2_cropcap *a) |
| 878 | { |
Guennadi Liakhovetski | 57bee29 | 2010-08-17 14:29:51 -0300 | [diff] [blame] | 879 | struct soc_camera_device *icd = file->private_data; |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 880 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 881 | |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 882 | return ici->ops->cropcap(icd, a); |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 883 | } |
| 884 | |
| 885 | static int soc_camera_g_crop(struct file *file, void *fh, |
| 886 | struct v4l2_crop *a) |
| 887 | { |
Guennadi Liakhovetski | 57bee29 | 2010-08-17 14:29:51 -0300 | [diff] [blame] | 888 | struct soc_camera_device *icd = file->private_data; |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 889 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 890 | int ret; |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 891 | |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 892 | ret = ici->ops->get_crop(icd, a); |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 893 | |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 894 | return ret; |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 895 | } |
| 896 | |
Guennadi Liakhovetski | 68a54f0 | 2009-08-25 11:46:52 -0300 | [diff] [blame] | 897 | /* |
| 898 | * According to the V4L2 API, drivers shall not update the struct v4l2_crop |
| 899 | * 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] | 900 | * retrieve it. |
Guennadi Liakhovetski | 68a54f0 | 2009-08-25 11:46:52 -0300 | [diff] [blame] | 901 | */ |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 902 | static int soc_camera_s_crop(struct file *file, void *fh, |
Hans Verkuil | 4f99659 | 2012-09-05 05:10:48 -0300 | [diff] [blame] | 903 | const struct v4l2_crop *a) |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 904 | { |
Guennadi Liakhovetski | 57bee29 | 2010-08-17 14:29:51 -0300 | [diff] [blame] | 905 | struct soc_camera_device *icd = file->private_data; |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 906 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
Hans Verkuil | 4f99659 | 2012-09-05 05:10:48 -0300 | [diff] [blame] | 907 | const struct v4l2_rect *rect = &a->c; |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 908 | struct v4l2_crop current_crop; |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 909 | int ret; |
| 910 | |
| 911 | if (a->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) |
| 912 | return -EINVAL; |
| 913 | |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 914 | dev_dbg(icd->pdev, "S_CROP(%ux%u@%u:%u)\n", |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 915 | rect->width, rect->height, rect->left, rect->top); |
| 916 | |
Anatolij Gustschin | 605a410 | 2012-11-28 17:15:51 -0300 | [diff] [blame] | 917 | current_crop.type = a->type; |
| 918 | |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 919 | /* If get_crop fails, we'll let host and / or client drivers decide */ |
| 920 | ret = ici->ops->get_crop(icd, ¤t_crop); |
| 921 | |
Guennadi Liakhovetski | b897a91 | 2009-08-25 11:46:53 -0300 | [diff] [blame] | 922 | /* Prohibit window size change with initialised buffers */ |
Guennadi Liakhovetski | 103754a | 2010-08-05 19:23:44 -0300 | [diff] [blame] | 923 | if (ret < 0) { |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 924 | dev_err(icd->pdev, |
Guennadi Liakhovetski | 103754a | 2010-08-05 19:23:44 -0300 | [diff] [blame] | 925 | "S_CROP denied: getting current crop failed\n"); |
Guennadi Liakhovetski | aee5c2f | 2011-03-28 13:28:28 -0300 | [diff] [blame] | 926 | } else if ((a->c.width == current_crop.c.width && |
| 927 | a->c.height == current_crop.c.height) || |
| 928 | !is_streaming(ici, icd)) { |
| 929 | /* same size or not streaming - use .set_crop() */ |
| 930 | ret = ici->ops->set_crop(icd, a); |
| 931 | } else if (ici->ops->set_livecrop) { |
| 932 | ret = ici->ops->set_livecrop(icd, a); |
| 933 | } else { |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 934 | dev_err(icd->pdev, |
Guennadi Liakhovetski | b897a91 | 2009-08-25 11:46:53 -0300 | [diff] [blame] | 935 | "S_CROP denied: queue initialised and sizes differ\n"); |
| 936 | ret = -EBUSY; |
Guennadi Liakhovetski | b897a91 | 2009-08-25 11:46:53 -0300 | [diff] [blame] | 937 | } |
| 938 | |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 939 | return ret; |
| 940 | } |
| 941 | |
Guennadi Liakhovetski | 3bfb410 | 2012-06-22 13:40:08 -0300 | [diff] [blame] | 942 | static int soc_camera_g_selection(struct file *file, void *fh, |
| 943 | struct v4l2_selection *s) |
| 944 | { |
| 945 | struct soc_camera_device *icd = file->private_data; |
| 946 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
| 947 | |
| 948 | /* With a wrong type no need to try to fall back to cropping */ |
| 949 | if (s->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) |
| 950 | return -EINVAL; |
| 951 | |
| 952 | if (!ici->ops->get_selection) |
| 953 | return -ENOTTY; |
| 954 | |
| 955 | return ici->ops->get_selection(icd, s); |
| 956 | } |
| 957 | |
| 958 | static int soc_camera_s_selection(struct file *file, void *fh, |
| 959 | struct v4l2_selection *s) |
| 960 | { |
| 961 | struct soc_camera_device *icd = file->private_data; |
| 962 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
| 963 | int ret; |
| 964 | |
| 965 | /* In all these cases cropping emulation will not help */ |
| 966 | if (s->type != V4L2_BUF_TYPE_VIDEO_CAPTURE || |
Sylwester Nawrocki | eb3c311 | 2012-08-22 18:03:30 -0300 | [diff] [blame] | 967 | (s->target != V4L2_SEL_TGT_COMPOSE && |
| 968 | s->target != V4L2_SEL_TGT_CROP)) |
Guennadi Liakhovetski | 3bfb410 | 2012-06-22 13:40:08 -0300 | [diff] [blame] | 969 | return -EINVAL; |
| 970 | |
Sylwester Nawrocki | eb3c311 | 2012-08-22 18:03:30 -0300 | [diff] [blame] | 971 | if (s->target == V4L2_SEL_TGT_COMPOSE) { |
Guennadi Liakhovetski | 3bfb410 | 2012-06-22 13:40:08 -0300 | [diff] [blame] | 972 | /* No output size change during a running capture! */ |
| 973 | if (is_streaming(ici, icd) && |
| 974 | (icd->user_width != s->r.width || |
| 975 | icd->user_height != s->r.height)) |
| 976 | return -EBUSY; |
| 977 | |
| 978 | /* |
| 979 | * Only one user is allowed to change the output format, touch |
| 980 | * buffers, start / stop streaming, poll for data |
| 981 | */ |
| 982 | if (icd->streamer && icd->streamer != file) |
| 983 | return -EBUSY; |
| 984 | } |
| 985 | |
| 986 | if (!ici->ops->set_selection) |
| 987 | return -ENOTTY; |
| 988 | |
| 989 | ret = ici->ops->set_selection(icd, s); |
| 990 | if (!ret && |
Sylwester Nawrocki | eb3c311 | 2012-08-22 18:03:30 -0300 | [diff] [blame] | 991 | s->target == V4L2_SEL_TGT_COMPOSE) { |
Guennadi Liakhovetski | 3bfb410 | 2012-06-22 13:40:08 -0300 | [diff] [blame] | 992 | icd->user_width = s->r.width; |
| 993 | icd->user_height = s->r.height; |
| 994 | if (!icd->streamer) |
| 995 | icd->streamer = file; |
| 996 | } |
| 997 | |
| 998 | return ret; |
| 999 | } |
| 1000 | |
Guennadi Liakhovetski | c9f6ef6 | 2010-02-09 18:00:30 +0100 | [diff] [blame] | 1001 | static int soc_camera_g_parm(struct file *file, void *fh, |
| 1002 | struct v4l2_streamparm *a) |
| 1003 | { |
Guennadi Liakhovetski | 57bee29 | 2010-08-17 14:29:51 -0300 | [diff] [blame] | 1004 | struct soc_camera_device *icd = file->private_data; |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 1005 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
Guennadi Liakhovetski | c9f6ef6 | 2010-02-09 18:00:30 +0100 | [diff] [blame] | 1006 | |
| 1007 | if (ici->ops->get_parm) |
| 1008 | return ici->ops->get_parm(icd, a); |
| 1009 | |
| 1010 | return -ENOIOCTLCMD; |
| 1011 | } |
| 1012 | |
| 1013 | static int soc_camera_s_parm(struct file *file, void *fh, |
| 1014 | struct v4l2_streamparm *a) |
| 1015 | { |
Guennadi Liakhovetski | 57bee29 | 2010-08-17 14:29:51 -0300 | [diff] [blame] | 1016 | struct soc_camera_device *icd = file->private_data; |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 1017 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
Guennadi Liakhovetski | c9f6ef6 | 2010-02-09 18:00:30 +0100 | [diff] [blame] | 1018 | |
| 1019 | if (ici->ops->set_parm) |
| 1020 | return ici->ops->set_parm(icd, a); |
| 1021 | |
| 1022 | return -ENOIOCTLCMD; |
| 1023 | } |
| 1024 | |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 1025 | static int soc_camera_g_chip_ident(struct file *file, void *fh, |
Hans Verkuil | aecde8b5 | 2008-12-30 07:14:19 -0300 | [diff] [blame] | 1026 | struct v4l2_dbg_chip_ident *id) |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 1027 | { |
Guennadi Liakhovetski | 57bee29 | 2010-08-17 14:29:51 -0300 | [diff] [blame] | 1028 | struct soc_camera_device *icd = file->private_data; |
Guennadi Liakhovetski | c9c1f1c | 2009-08-25 11:46:59 -0300 | [diff] [blame] | 1029 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 1030 | |
Guennadi Liakhovetski | c9c1f1c | 2009-08-25 11:46:59 -0300 | [diff] [blame] | 1031 | return v4l2_subdev_call(sd, core, g_chip_ident, id); |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 1032 | } |
| 1033 | |
| 1034 | #ifdef CONFIG_VIDEO_ADV_DEBUG |
| 1035 | static int soc_camera_g_register(struct file *file, void *fh, |
Hans Verkuil | aecde8b5 | 2008-12-30 07:14:19 -0300 | [diff] [blame] | 1036 | struct v4l2_dbg_register *reg) |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 1037 | { |
Guennadi Liakhovetski | 57bee29 | 2010-08-17 14:29:51 -0300 | [diff] [blame] | 1038 | struct soc_camera_device *icd = file->private_data; |
Guennadi Liakhovetski | c9c1f1c | 2009-08-25 11:46:59 -0300 | [diff] [blame] | 1039 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 1040 | |
Guennadi Liakhovetski | c9c1f1c | 2009-08-25 11:46:59 -0300 | [diff] [blame] | 1041 | return v4l2_subdev_call(sd, core, g_register, reg); |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 1042 | } |
| 1043 | |
| 1044 | static int soc_camera_s_register(struct file *file, void *fh, |
Hans Verkuil | aecde8b5 | 2008-12-30 07:14:19 -0300 | [diff] [blame] | 1045 | struct v4l2_dbg_register *reg) |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 1046 | { |
Guennadi Liakhovetski | 57bee29 | 2010-08-17 14:29:51 -0300 | [diff] [blame] | 1047 | struct soc_camera_device *icd = file->private_data; |
Guennadi Liakhovetski | c9c1f1c | 2009-08-25 11:46:59 -0300 | [diff] [blame] | 1048 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 1049 | |
Guennadi Liakhovetski | c9c1f1c | 2009-08-25 11:46:59 -0300 | [diff] [blame] | 1050 | return v4l2_subdev_call(sd, core, s_register, reg); |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 1051 | } |
| 1052 | #endif |
| 1053 | |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 1054 | static int soc_camera_probe(struct soc_camera_device *icd); |
| 1055 | |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 1056 | /* So far this function cannot fail */ |
| 1057 | static void scan_add_host(struct soc_camera_host *ici) |
| 1058 | { |
| 1059 | struct soc_camera_device *icd; |
| 1060 | |
Guennadi Liakhovetski | 7d051b3 | 2012-12-20 13:02:51 -0300 | [diff] [blame] | 1061 | mutex_lock(&list_lock); |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 1062 | |
| 1063 | list_for_each_entry(icd, &devices, list) { |
| 1064 | if (icd->iface == ici->nr) { |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 1065 | icd->parent = ici->v4l2_dev.dev; |
Mauro Carvalho Chehab | 84cc237 | 2012-10-27 16:42:05 -0300 | [diff] [blame] | 1066 | soc_camera_probe(icd); |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 1067 | } |
| 1068 | } |
| 1069 | |
Guennadi Liakhovetski | 7d051b3 | 2012-12-20 13:02:51 -0300 | [diff] [blame] | 1070 | mutex_unlock(&list_lock); |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 1071 | } |
| 1072 | |
Guennadi Liakhovetski | 40e2e09 | 2009-08-25 11:28:22 -0300 | [diff] [blame] | 1073 | #ifdef CONFIG_I2C_BOARDINFO |
| 1074 | static int soc_camera_init_i2c(struct soc_camera_device *icd, |
| 1075 | struct soc_camera_link *icl) |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 1076 | { |
Guennadi Liakhovetski | 40e2e09 | 2009-08-25 11:28:22 -0300 | [diff] [blame] | 1077 | struct i2c_client *client; |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 1078 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
Guennadi Liakhovetski | 40e2e09 | 2009-08-25 11:28:22 -0300 | [diff] [blame] | 1079 | struct i2c_adapter *adap = i2c_get_adapter(icl->i2c_adapter_id); |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 1080 | struct v4l2_subdev *subdev; |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 1081 | |
Guennadi Liakhovetski | 40e2e09 | 2009-08-25 11:28:22 -0300 | [diff] [blame] | 1082 | if (!adap) { |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 1083 | dev_err(icd->pdev, "Cannot get I2C adapter #%d. No driver?\n", |
Guennadi Liakhovetski | 40e2e09 | 2009-08-25 11:28:22 -0300 | [diff] [blame] | 1084 | icl->i2c_adapter_id); |
| 1085 | goto ei2cga; |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 1086 | } |
| 1087 | |
Guennadi Liakhovetski | 2f0babb | 2011-09-09 13:39:20 -0300 | [diff] [blame] | 1088 | icl->board_info->platform_data = icl; |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 1089 | |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 1090 | subdev = v4l2_i2c_new_subdev_board(&ici->v4l2_dev, adap, |
Laurent Pinchart | 9a1f8b3 | 2010-09-24 10:16:44 -0300 | [diff] [blame] | 1091 | icl->board_info, NULL); |
Magnus Damm | d74f841 | 2010-02-09 17:40:40 +0900 | [diff] [blame] | 1092 | if (!subdev) |
Guennadi Liakhovetski | 40e2e09 | 2009-08-25 11:28:22 -0300 | [diff] [blame] | 1093 | goto ei2cnd; |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 1094 | |
Laurent Pinchart | c4ce6d1 | 2010-07-30 17:24:54 -0300 | [diff] [blame] | 1095 | client = v4l2_get_subdevdata(subdev); |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 1096 | |
Guennadi Liakhovetski | 40e2e09 | 2009-08-25 11:28:22 -0300 | [diff] [blame] | 1097 | /* Use to_i2c_client(dev) to recover the i2c client */ |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 1098 | icd->control = &client->dev; |
Guennadi Liakhovetski | 40e2e09 | 2009-08-25 11:28:22 -0300 | [diff] [blame] | 1099 | |
| 1100 | return 0; |
| 1101 | ei2cnd: |
| 1102 | i2c_put_adapter(adap); |
| 1103 | ei2cga: |
Magnus Damm | d74f841 | 2010-02-09 17:40:40 +0900 | [diff] [blame] | 1104 | return -ENODEV; |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 1105 | } |
| 1106 | |
Guennadi Liakhovetski | 40e2e09 | 2009-08-25 11:28:22 -0300 | [diff] [blame] | 1107 | static void soc_camera_free_i2c(struct soc_camera_device *icd) |
| 1108 | { |
| 1109 | struct i2c_client *client = |
| 1110 | to_i2c_client(to_soc_camera_control(icd)); |
Guennadi Liakhovetski | c8dd707 | 2011-03-23 05:26:11 -0300 | [diff] [blame] | 1111 | struct i2c_adapter *adap = client->adapter; |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 1112 | |
| 1113 | icd->control = NULL; |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 1114 | v4l2_device_unregister_subdev(i2c_get_clientdata(client)); |
Guennadi Liakhovetski | 40e2e09 | 2009-08-25 11:28:22 -0300 | [diff] [blame] | 1115 | i2c_unregister_device(client); |
Guennadi Liakhovetski | c8dd707 | 2011-03-23 05:26:11 -0300 | [diff] [blame] | 1116 | i2c_put_adapter(adap); |
Guennadi Liakhovetski | 40e2e09 | 2009-08-25 11:28:22 -0300 | [diff] [blame] | 1117 | } |
| 1118 | #else |
| 1119 | #define soc_camera_init_i2c(icd, icl) (-ENODEV) |
| 1120 | #define soc_camera_free_i2c(icd) do {} while (0) |
| 1121 | #endif |
| 1122 | |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 1123 | static int soc_camera_video_start(struct soc_camera_device *icd); |
Guennadi Liakhovetski | 40e2e09 | 2009-08-25 11:28:22 -0300 | [diff] [blame] | 1124 | static int video_dev_create(struct soc_camera_device *icd); |
| 1125 | /* Called during host-driver probe */ |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 1126 | static int soc_camera_probe(struct soc_camera_device *icd) |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 1127 | { |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 1128 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
Guennadi Liakhovetski | 40e2e09 | 2009-08-25 11:28:22 -0300 | [diff] [blame] | 1129 | struct soc_camera_link *icl = to_soc_camera_link(icd); |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 1130 | struct device *control = NULL; |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 1131 | struct v4l2_subdev *sd; |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 1132 | struct v4l2_mbus_framefmt mf; |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 1133 | int ret; |
| 1134 | |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 1135 | dev_info(icd->pdev, "Probing %s\n", dev_name(icd->pdev)); |
Guennadi Liakhovetski | 1c3bb74 | 2008-12-18 12:28:54 -0300 | [diff] [blame] | 1136 | |
Hans Verkuil | ee02da6 | 2011-09-06 12:36:39 -0300 | [diff] [blame] | 1137 | /* |
| 1138 | * Currently the subdev with the largest number of controls (13) is |
| 1139 | * ov6550. So let's pick 16 as a hint for the control handler. Note |
| 1140 | * that this is a hint only: too large and you waste some memory, too |
| 1141 | * small and there is a (very) small performance hit when looking up |
| 1142 | * controls in the internal hash. |
| 1143 | */ |
| 1144 | ret = v4l2_ctrl_handler_init(&icd->ctrl_handler, 16); |
| 1145 | if (ret < 0) |
| 1146 | return ret; |
| 1147 | |
Guennadi Liakhovetski | 7705b6d | 2012-03-14 07:22:07 -0300 | [diff] [blame] | 1148 | /* The camera could have been already on, try to reset */ |
| 1149 | if (icl->reset) |
| 1150 | icl->reset(icd->pdev); |
| 1151 | |
Guennadi Liakhovetski | 7d051b3 | 2012-12-20 13:02:51 -0300 | [diff] [blame] | 1152 | mutex_lock(&ici->host_lock); |
Guennadi Liakhovetski | 7705b6d | 2012-03-14 07:22:07 -0300 | [diff] [blame] | 1153 | ret = ici->ops->add(icd); |
Guennadi Liakhovetski | 7d051b3 | 2012-12-20 13:02:51 -0300 | [diff] [blame] | 1154 | mutex_unlock(&ici->host_lock); |
Guennadi Liakhovetski | 7705b6d | 2012-03-14 07:22:07 -0300 | [diff] [blame] | 1155 | if (ret < 0) |
| 1156 | goto eadd; |
| 1157 | |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 1158 | /* Must have icd->vdev before registering the device */ |
Guennadi Liakhovetski | 40e2e09 | 2009-08-25 11:28:22 -0300 | [diff] [blame] | 1159 | ret = video_dev_create(icd); |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 1160 | if (ret < 0) |
Guennadi Liakhovetski | 40e2e09 | 2009-08-25 11:28:22 -0300 | [diff] [blame] | 1161 | goto evdc; |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 1162 | |
Guennadi Liakhovetski | 40e2e09 | 2009-08-25 11:28:22 -0300 | [diff] [blame] | 1163 | /* Non-i2c cameras, e.g., soc_camera_platform, have no board_info */ |
| 1164 | if (icl->board_info) { |
| 1165 | ret = soc_camera_init_i2c(icd, icl); |
| 1166 | if (ret < 0) |
| 1167 | goto eadddev; |
| 1168 | } else if (!icl->add_device || !icl->del_device) { |
| 1169 | ret = -EINVAL; |
| 1170 | goto eadddev; |
| 1171 | } else { |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 1172 | if (icl->module_name) |
| 1173 | ret = request_module(icl->module_name); |
| 1174 | |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 1175 | ret = icl->add_device(icd); |
Guennadi Liakhovetski | 40e2e09 | 2009-08-25 11:28:22 -0300 | [diff] [blame] | 1176 | if (ret < 0) |
| 1177 | goto eadddev; |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 1178 | |
Guennadi Liakhovetski | 96c7539 | 2009-08-25 11:53:23 -0300 | [diff] [blame] | 1179 | /* |
| 1180 | * FIXME: this is racy, have to use driver-binding notification, |
| 1181 | * when it is available |
| 1182 | */ |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 1183 | control = to_soc_camera_control(icd); |
Guennadi Liakhovetski | 08590b9 | 2009-08-25 11:46:54 -0300 | [diff] [blame] | 1184 | if (!control || !control->driver || !dev_get_drvdata(control) || |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 1185 | !try_module_get(control->driver->owner)) { |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 1186 | icl->del_device(icd); |
Guennadi Liakhovetski | 7ae77ee | 2011-09-28 09:25:28 -0300 | [diff] [blame] | 1187 | ret = -ENODEV; |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 1188 | goto enodrv; |
| 1189 | } |
Guennadi Liakhovetski | 025c18a | 2009-03-13 06:08:20 -0300 | [diff] [blame] | 1190 | } |
| 1191 | |
Guennadi Liakhovetski | 24105eb | 2011-03-23 05:41:28 -0300 | [diff] [blame] | 1192 | sd = soc_camera_to_subdev(icd); |
Guennadi Liakhovetski | 4c0b036 | 2011-12-05 16:01:13 -0300 | [diff] [blame] | 1193 | sd->grp_id = soc_camera_grp_id(icd); |
| 1194 | v4l2_set_subdev_hostdata(sd, icd); |
Guennadi Liakhovetski | 24105eb | 2011-03-23 05:41:28 -0300 | [diff] [blame] | 1195 | |
Peter Senna Tschudin | ab99cb1 | 2012-09-06 12:24:00 -0300 | [diff] [blame] | 1196 | ret = v4l2_ctrl_add_handler(&icd->ctrl_handler, sd->ctrl_handler, NULL); |
| 1197 | if (ret < 0) |
Hans Verkuil | ee02da6 | 2011-09-06 12:36:39 -0300 | [diff] [blame] | 1198 | goto ectrl; |
| 1199 | |
Guennadi Liakhovetski | fa48984 | 2009-08-25 11:46:43 -0300 | [diff] [blame] | 1200 | /* At this point client .probe() should have run already */ |
| 1201 | ret = soc_camera_init_user_formats(icd); |
| 1202 | if (ret < 0) |
| 1203 | goto eiufmt; |
| 1204 | |
Guennadi Liakhovetski | fa48984 | 2009-08-25 11:46:43 -0300 | [diff] [blame] | 1205 | icd->field = V4L2_FIELD_ANY; |
| 1206 | |
Guennadi Liakhovetski | b6a633c | 2010-12-25 17:40:26 -0300 | [diff] [blame] | 1207 | /* |
| 1208 | * ..._video_start() will create a device node, video_register_device() |
| 1209 | * itself is protected against concurrent open() calls, but we also have |
| 1210 | * to protect our data. |
| 1211 | */ |
Guennadi Liakhovetski | dd669e9 | 2012-12-24 09:31:33 -0300 | [diff] [blame^] | 1212 | mutex_lock(&ici->host_lock); |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 1213 | |
| 1214 | ret = soc_camera_video_start(icd); |
| 1215 | if (ret < 0) |
| 1216 | goto evidstart; |
Guennadi Liakhovetski | 40e2e09 | 2009-08-25 11:28:22 -0300 | [diff] [blame] | 1217 | |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 1218 | /* Try to improve our guess of a reasonable window format */ |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 1219 | if (!v4l2_subdev_call(sd, video, g_mbus_fmt, &mf)) { |
| 1220 | icd->user_width = mf.width; |
| 1221 | icd->user_height = mf.height; |
| 1222 | icd->colorspace = mf.colorspace; |
| 1223 | icd->field = mf.field; |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 1224 | } |
| 1225 | |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 1226 | ici->ops->remove(icd); |
| 1227 | |
Guennadi Liakhovetski | dd669e9 | 2012-12-24 09:31:33 -0300 | [diff] [blame^] | 1228 | mutex_unlock(&ici->host_lock); |
Guennadi Liakhovetski | 40e2e09 | 2009-08-25 11:28:22 -0300 | [diff] [blame] | 1229 | |
| 1230 | return 0; |
| 1231 | |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 1232 | evidstart: |
Guennadi Liakhovetski | dd669e9 | 2012-12-24 09:31:33 -0300 | [diff] [blame^] | 1233 | mutex_unlock(&ici->host_lock); |
Guennadi Liakhovetski | fa48984 | 2009-08-25 11:46:43 -0300 | [diff] [blame] | 1234 | soc_camera_free_user_formats(icd); |
| 1235 | eiufmt: |
Hans Verkuil | ee02da6 | 2011-09-06 12:36:39 -0300 | [diff] [blame] | 1236 | ectrl: |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 1237 | if (icl->board_info) { |
Guennadi Liakhovetski | 40e2e09 | 2009-08-25 11:28:22 -0300 | [diff] [blame] | 1238 | soc_camera_free_i2c(icd); |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 1239 | } else { |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 1240 | icl->del_device(icd); |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 1241 | module_put(control->driver->owner); |
| 1242 | } |
| 1243 | enodrv: |
Guennadi Liakhovetski | 40e2e09 | 2009-08-25 11:28:22 -0300 | [diff] [blame] | 1244 | eadddev: |
| 1245 | video_device_release(icd->vdev); |
Guennadi Liakhovetski | 7b9d8c3 | 2011-09-08 04:36:06 -0300 | [diff] [blame] | 1246 | icd->vdev = NULL; |
Guennadi Liakhovetski | 40e2e09 | 2009-08-25 11:28:22 -0300 | [diff] [blame] | 1247 | evdc: |
Guennadi Liakhovetski | 7d051b3 | 2012-12-20 13:02:51 -0300 | [diff] [blame] | 1248 | mutex_lock(&ici->host_lock); |
Guennadi Liakhovetski | 7705b6d | 2012-03-14 07:22:07 -0300 | [diff] [blame] | 1249 | ici->ops->remove(icd); |
Guennadi Liakhovetski | 7d051b3 | 2012-12-20 13:02:51 -0300 | [diff] [blame] | 1250 | mutex_unlock(&ici->host_lock); |
Guennadi Liakhovetski | 7705b6d | 2012-03-14 07:22:07 -0300 | [diff] [blame] | 1251 | eadd: |
Hans Verkuil | ee02da6 | 2011-09-06 12:36:39 -0300 | [diff] [blame] | 1252 | v4l2_ctrl_handler_free(&icd->ctrl_handler); |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 1253 | return ret; |
| 1254 | } |
| 1255 | |
Guennadi Liakhovetski | 5d28d52 | 2009-12-11 11:15:05 -0300 | [diff] [blame] | 1256 | /* |
| 1257 | * This is called on device_unregister, which only means we have to disconnect |
| 1258 | * from the host, but not remove ourselves from the device list |
| 1259 | */ |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 1260 | static int soc_camera_remove(struct soc_camera_device *icd) |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 1261 | { |
Guennadi Liakhovetski | 40e2e09 | 2009-08-25 11:28:22 -0300 | [diff] [blame] | 1262 | struct soc_camera_link *icl = to_soc_camera_link(icd); |
| 1263 | struct video_device *vdev = icd->vdev; |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 1264 | |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 1265 | BUG_ON(!icd->parent); |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 1266 | |
Hans Verkuil | ee02da6 | 2011-09-06 12:36:39 -0300 | [diff] [blame] | 1267 | v4l2_ctrl_handler_free(&icd->ctrl_handler); |
Guennadi Liakhovetski | 40e2e09 | 2009-08-25 11:28:22 -0300 | [diff] [blame] | 1268 | if (vdev) { |
Guennadi Liakhovetski | 40e2e09 | 2009-08-25 11:28:22 -0300 | [diff] [blame] | 1269 | video_unregister_device(vdev); |
| 1270 | icd->vdev = NULL; |
Guennadi Liakhovetski | 40e2e09 | 2009-08-25 11:28:22 -0300 | [diff] [blame] | 1271 | } |
| 1272 | |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 1273 | if (icl->board_info) { |
Guennadi Liakhovetski | 40e2e09 | 2009-08-25 11:28:22 -0300 | [diff] [blame] | 1274 | soc_camera_free_i2c(icd); |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 1275 | } else { |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 1276 | struct device_driver *drv = to_soc_camera_control(icd)->driver; |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 1277 | if (drv) { |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 1278 | icl->del_device(icd); |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 1279 | module_put(drv->owner); |
| 1280 | } |
| 1281 | } |
Guennadi Liakhovetski | fa48984 | 2009-08-25 11:46:43 -0300 | [diff] [blame] | 1282 | soc_camera_free_user_formats(icd); |
Guennadi Liakhovetski | 025c18a | 2009-03-13 06:08:20 -0300 | [diff] [blame] | 1283 | |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 1284 | return 0; |
| 1285 | } |
| 1286 | |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 1287 | static int default_cropcap(struct soc_camera_device *icd, |
| 1288 | struct v4l2_cropcap *a) |
| 1289 | { |
| 1290 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); |
| 1291 | return v4l2_subdev_call(sd, video, cropcap, a); |
| 1292 | } |
| 1293 | |
| 1294 | static int default_g_crop(struct soc_camera_device *icd, struct v4l2_crop *a) |
| 1295 | { |
| 1296 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); |
| 1297 | return v4l2_subdev_call(sd, video, g_crop, a); |
| 1298 | } |
| 1299 | |
Hans Verkuil | 4f99659 | 2012-09-05 05:10:48 -0300 | [diff] [blame] | 1300 | 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] | 1301 | { |
| 1302 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); |
| 1303 | return v4l2_subdev_call(sd, video, s_crop, a); |
| 1304 | } |
| 1305 | |
Janusz Krzysztofik | 06e1782 | 2010-09-10 22:26:16 -0300 | [diff] [blame] | 1306 | static int default_g_parm(struct soc_camera_device *icd, |
| 1307 | struct v4l2_streamparm *parm) |
| 1308 | { |
| 1309 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); |
| 1310 | return v4l2_subdev_call(sd, video, g_parm, parm); |
| 1311 | } |
| 1312 | |
| 1313 | static int default_s_parm(struct soc_camera_device *icd, |
| 1314 | struct v4l2_streamparm *parm) |
| 1315 | { |
| 1316 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); |
| 1317 | return v4l2_subdev_call(sd, video, s_parm, parm); |
| 1318 | } |
| 1319 | |
Guennadi Liakhovetski | ad3537b | 2012-05-08 13:00:51 -0300 | [diff] [blame] | 1320 | static int default_enum_framesizes(struct soc_camera_device *icd, |
| 1321 | struct v4l2_frmsizeenum *fsize) |
Qing Xu | ed5b65d | 2011-01-20 05:19:40 -0300 | [diff] [blame] | 1322 | { |
| 1323 | int ret; |
| 1324 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); |
| 1325 | const struct soc_camera_format_xlate *xlate; |
| 1326 | __u32 pixfmt = fsize->pixel_format; |
| 1327 | struct v4l2_frmsizeenum fsize_mbus = *fsize; |
| 1328 | |
| 1329 | xlate = soc_camera_xlate_by_fourcc(icd, pixfmt); |
| 1330 | if (!xlate) |
| 1331 | return -EINVAL; |
| 1332 | /* map xlate-code to pixel_format, sensor only handle xlate-code*/ |
| 1333 | fsize_mbus.pixel_format = xlate->code; |
| 1334 | |
Guennadi Liakhovetski | 9633c08 | 2012-05-08 17:41:33 -0300 | [diff] [blame] | 1335 | ret = v4l2_subdev_call(sd, video, enum_framesizes, &fsize_mbus); |
Qing Xu | ed5b65d | 2011-01-20 05:19:40 -0300 | [diff] [blame] | 1336 | if (ret < 0) |
| 1337 | return ret; |
| 1338 | |
| 1339 | *fsize = fsize_mbus; |
| 1340 | fsize->pixel_format = pixfmt; |
| 1341 | |
| 1342 | return 0; |
| 1343 | } |
| 1344 | |
Guennadi Liakhovetski | b8d9904 | 2008-04-04 13:41:25 -0300 | [diff] [blame] | 1345 | int soc_camera_host_register(struct soc_camera_host *ici) |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 1346 | { |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 1347 | struct soc_camera_host *ix; |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 1348 | int ret; |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 1349 | |
Guennadi Liakhovetski | 64f5905 | 2008-12-18 11:51:55 -0300 | [diff] [blame] | 1350 | if (!ici || !ici->ops || |
| 1351 | !ici->ops->try_fmt || |
| 1352 | !ici->ops->set_fmt || |
| 1353 | !ici->ops->set_bus_param || |
| 1354 | !ici->ops->querycap || |
Guennadi Liakhovetski | 592c2ab | 2011-01-29 12:44:51 -0300 | [diff] [blame] | 1355 | ((!ici->ops->init_videobuf || |
| 1356 | !ici->ops->reqbufs) && |
| 1357 | !ici->ops->init_videobuf2) || |
Guennadi Liakhovetski | 64f5905 | 2008-12-18 11:51:55 -0300 | [diff] [blame] | 1358 | !ici->ops->add || |
| 1359 | !ici->ops->remove || |
Guennadi Liakhovetski | eff505f | 2009-04-24 12:55:48 -0300 | [diff] [blame] | 1360 | !ici->ops->poll || |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 1361 | !ici->v4l2_dev.dev) |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 1362 | return -EINVAL; |
| 1363 | |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 1364 | if (!ici->ops->set_crop) |
| 1365 | ici->ops->set_crop = default_s_crop; |
| 1366 | if (!ici->ops->get_crop) |
| 1367 | ici->ops->get_crop = default_g_crop; |
| 1368 | if (!ici->ops->cropcap) |
| 1369 | ici->ops->cropcap = default_cropcap; |
Janusz Krzysztofik | 06e1782 | 2010-09-10 22:26:16 -0300 | [diff] [blame] | 1370 | if (!ici->ops->set_parm) |
| 1371 | ici->ops->set_parm = default_s_parm; |
| 1372 | if (!ici->ops->get_parm) |
| 1373 | ici->ops->get_parm = default_g_parm; |
Guennadi Liakhovetski | ad3537b | 2012-05-08 13:00:51 -0300 | [diff] [blame] | 1374 | if (!ici->ops->enum_framesizes) |
| 1375 | ici->ops->enum_framesizes = default_enum_framesizes; |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 1376 | |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 1377 | mutex_lock(&list_lock); |
| 1378 | list_for_each_entry(ix, &hosts, list) { |
| 1379 | if (ix->nr == ici->nr) { |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 1380 | ret = -EBUSY; |
| 1381 | goto edevreg; |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 1382 | } |
| 1383 | } |
| 1384 | |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 1385 | ret = v4l2_device_register(ici->v4l2_dev.dev, &ici->v4l2_dev); |
| 1386 | if (ret < 0) |
| 1387 | goto edevreg; |
Guennadi Liakhovetski | eff505f | 2009-04-24 12:55:48 -0300 | [diff] [blame] | 1388 | |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 1389 | list_add_tail(&ici->list, &hosts); |
| 1390 | mutex_unlock(&list_lock); |
| 1391 | |
Guennadi Liakhovetski | 2f9a0c8 | 2012-04-18 06:43:09 -0300 | [diff] [blame] | 1392 | mutex_init(&ici->host_lock); |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 1393 | scan_add_host(ici); |
| 1394 | |
| 1395 | return 0; |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 1396 | |
| 1397 | edevreg: |
| 1398 | mutex_unlock(&list_lock); |
| 1399 | return ret; |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 1400 | } |
| 1401 | EXPORT_SYMBOL(soc_camera_host_register); |
| 1402 | |
| 1403 | /* Unregister all clients! */ |
| 1404 | void soc_camera_host_unregister(struct soc_camera_host *ici) |
| 1405 | { |
| 1406 | struct soc_camera_device *icd; |
| 1407 | |
| 1408 | mutex_lock(&list_lock); |
| 1409 | |
| 1410 | list_del(&ici->list); |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 1411 | list_for_each_entry(icd, &devices, list) |
| 1412 | if (icd->iface == ici->nr && to_soc_camera_control(icd)) |
| 1413 | soc_camera_remove(icd); |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 1414 | |
| 1415 | mutex_unlock(&list_lock); |
| 1416 | |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 1417 | v4l2_device_unregister(&ici->v4l2_dev); |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 1418 | } |
| 1419 | EXPORT_SYMBOL(soc_camera_host_unregister); |
| 1420 | |
| 1421 | /* Image capture device */ |
Guennadi Liakhovetski | 40e2e09 | 2009-08-25 11:28:22 -0300 | [diff] [blame] | 1422 | static int soc_camera_device_register(struct soc_camera_device *icd) |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 1423 | { |
| 1424 | struct soc_camera_device *ix; |
| 1425 | int num = -1, i; |
| 1426 | |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 1427 | for (i = 0; i < 256 && num < 0; i++) { |
| 1428 | num = i; |
Guennadi Liakhovetski | 40e2e09 | 2009-08-25 11:28:22 -0300 | [diff] [blame] | 1429 | /* Check if this index is available on this interface */ |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 1430 | list_for_each_entry(ix, &devices, list) { |
| 1431 | if (ix->iface == icd->iface && ix->devnum == i) { |
| 1432 | num = -1; |
| 1433 | break; |
| 1434 | } |
| 1435 | } |
| 1436 | } |
| 1437 | |
| 1438 | if (num < 0) |
Guennadi Liakhovetski | 5d28d52 | 2009-12-11 11:15:05 -0300 | [diff] [blame] | 1439 | /* |
| 1440 | * ok, we have 256 cameras on this host... |
| 1441 | * man, stay reasonable... |
| 1442 | */ |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 1443 | return -ENOMEM; |
| 1444 | |
Guennadi Liakhovetski | 64ff9ba | 2009-11-09 16:12:37 -0300 | [diff] [blame] | 1445 | icd->devnum = num; |
Guennadi Liakhovetski | 64f5905 | 2008-12-18 11:51:55 -0300 | [diff] [blame] | 1446 | icd->use_count = 0; |
| 1447 | icd->host_priv = NULL; |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 1448 | |
Guennadi Liakhovetski | 40e2e09 | 2009-08-25 11:28:22 -0300 | [diff] [blame] | 1449 | list_add_tail(&icd->list, &devices); |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 1450 | |
Guennadi Liakhovetski | 40e2e09 | 2009-08-25 11:28:22 -0300 | [diff] [blame] | 1451 | return 0; |
| 1452 | } |
| 1453 | |
Hans Verkuil | a399810 | 2008-07-21 02:57:38 -0300 | [diff] [blame] | 1454 | static const struct v4l2_ioctl_ops soc_camera_ioctl_ops = { |
| 1455 | .vidioc_querycap = soc_camera_querycap, |
Guennadi Liakhovetski | 7ae77ee | 2011-09-28 09:25:28 -0300 | [diff] [blame] | 1456 | .vidioc_try_fmt_vid_cap = soc_camera_try_fmt_vid_cap, |
Hans Verkuil | a399810 | 2008-07-21 02:57:38 -0300 | [diff] [blame] | 1457 | .vidioc_g_fmt_vid_cap = soc_camera_g_fmt_vid_cap, |
Hans Verkuil | a399810 | 2008-07-21 02:57:38 -0300 | [diff] [blame] | 1458 | .vidioc_s_fmt_vid_cap = soc_camera_s_fmt_vid_cap, |
Guennadi Liakhovetski | 7ae77ee | 2011-09-28 09:25:28 -0300 | [diff] [blame] | 1459 | .vidioc_enum_fmt_vid_cap = soc_camera_enum_fmt_vid_cap, |
Hans Verkuil | a399810 | 2008-07-21 02:57:38 -0300 | [diff] [blame] | 1460 | .vidioc_enum_input = soc_camera_enum_input, |
| 1461 | .vidioc_g_input = soc_camera_g_input, |
| 1462 | .vidioc_s_input = soc_camera_s_input, |
| 1463 | .vidioc_s_std = soc_camera_s_std, |
Guennadi Liakhovetski | 2f0babb | 2011-09-09 13:39:20 -0300 | [diff] [blame] | 1464 | .vidioc_g_std = soc_camera_g_std, |
Guennadi Liakhovetski | ad3537b | 2012-05-08 13:00:51 -0300 | [diff] [blame] | 1465 | .vidioc_enum_framesizes = soc_camera_enum_framesizes, |
Hans Verkuil | a399810 | 2008-07-21 02:57:38 -0300 | [diff] [blame] | 1466 | .vidioc_reqbufs = soc_camera_reqbufs, |
Hans Verkuil | a399810 | 2008-07-21 02:57:38 -0300 | [diff] [blame] | 1467 | .vidioc_querybuf = soc_camera_querybuf, |
| 1468 | .vidioc_qbuf = soc_camera_qbuf, |
| 1469 | .vidioc_dqbuf = soc_camera_dqbuf, |
Guennadi Liakhovetski | 7ae77ee | 2011-09-28 09:25:28 -0300 | [diff] [blame] | 1470 | .vidioc_create_bufs = soc_camera_create_bufs, |
| 1471 | .vidioc_prepare_buf = soc_camera_prepare_buf, |
Hans Verkuil | a399810 | 2008-07-21 02:57:38 -0300 | [diff] [blame] | 1472 | .vidioc_streamon = soc_camera_streamon, |
| 1473 | .vidioc_streamoff = soc_camera_streamoff, |
Hans Verkuil | a399810 | 2008-07-21 02:57:38 -0300 | [diff] [blame] | 1474 | .vidioc_cropcap = soc_camera_cropcap, |
| 1475 | .vidioc_g_crop = soc_camera_g_crop, |
| 1476 | .vidioc_s_crop = soc_camera_s_crop, |
Guennadi Liakhovetski | 3bfb410 | 2012-06-22 13:40:08 -0300 | [diff] [blame] | 1477 | .vidioc_g_selection = soc_camera_g_selection, |
| 1478 | .vidioc_s_selection = soc_camera_s_selection, |
Guennadi Liakhovetski | c9f6ef6 | 2010-02-09 18:00:30 +0100 | [diff] [blame] | 1479 | .vidioc_g_parm = soc_camera_g_parm, |
| 1480 | .vidioc_s_parm = soc_camera_s_parm, |
Hans Verkuil | a399810 | 2008-07-21 02:57:38 -0300 | [diff] [blame] | 1481 | .vidioc_g_chip_ident = soc_camera_g_chip_ident, |
| 1482 | #ifdef CONFIG_VIDEO_ADV_DEBUG |
| 1483 | .vidioc_g_register = soc_camera_g_register, |
| 1484 | .vidioc_s_register = soc_camera_s_register, |
| 1485 | #endif |
| 1486 | }; |
| 1487 | |
Guennadi Liakhovetski | 40e2e09 | 2009-08-25 11:28:22 -0300 | [diff] [blame] | 1488 | static int video_dev_create(struct soc_camera_device *icd) |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 1489 | { |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 1490 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
Guennadi Liakhovetski | 40e2e09 | 2009-08-25 11:28:22 -0300 | [diff] [blame] | 1491 | struct video_device *vdev = video_device_alloc(); |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 1492 | |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 1493 | if (!vdev) |
Guennadi Liakhovetski | 40e2e09 | 2009-08-25 11:28:22 -0300 | [diff] [blame] | 1494 | return -ENOMEM; |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 1495 | |
| 1496 | strlcpy(vdev->name, ici->drv_name, sizeof(vdev->name)); |
Guennadi Liakhovetski | 1c3bb74 | 2008-12-18 12:28:54 -0300 | [diff] [blame] | 1497 | |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 1498 | vdev->parent = icd->pdev; |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 1499 | vdev->current_norm = V4L2_STD_UNKNOWN; |
| 1500 | vdev->fops = &soc_camera_fops; |
Hans Verkuil | a399810 | 2008-07-21 02:57:38 -0300 | [diff] [blame] | 1501 | vdev->ioctl_ops = &soc_camera_ioctl_ops; |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 1502 | vdev->release = video_device_release; |
Guennadi Liakhovetski | 40e2e09 | 2009-08-25 11:28:22 -0300 | [diff] [blame] | 1503 | vdev->tvnorms = V4L2_STD_UNKNOWN; |
Hans Verkuil | ee02da6 | 2011-09-06 12:36:39 -0300 | [diff] [blame] | 1504 | vdev->ctrl_handler = &icd->ctrl_handler; |
Guennadi Liakhovetski | dd669e9 | 2012-12-24 09:31:33 -0300 | [diff] [blame^] | 1505 | vdev->lock = &ici->host_lock; |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 1506 | |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 1507 | icd->vdev = vdev; |
| 1508 | |
| 1509 | return 0; |
Guennadi Liakhovetski | 40e2e09 | 2009-08-25 11:28:22 -0300 | [diff] [blame] | 1510 | } |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 1511 | |
Guennadi Liakhovetski | 40e2e09 | 2009-08-25 11:28:22 -0300 | [diff] [blame] | 1512 | /* |
Guennadi Liakhovetski | dd669e9 | 2012-12-24 09:31:33 -0300 | [diff] [blame^] | 1513 | * Called from soc_camera_probe() above with .host_lock held |
Guennadi Liakhovetski | 40e2e09 | 2009-08-25 11:28:22 -0300 | [diff] [blame] | 1514 | */ |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 1515 | static int soc_camera_video_start(struct soc_camera_device *icd) |
Guennadi Liakhovetski | 40e2e09 | 2009-08-25 11:28:22 -0300 | [diff] [blame] | 1516 | { |
Mauro Carvalho Chehab | d364ee4 | 2011-06-01 15:03:56 -0300 | [diff] [blame] | 1517 | const struct device_type *type = icd->vdev->dev.type; |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 1518 | int ret; |
Guennadi Liakhovetski | 40e2e09 | 2009-08-25 11:28:22 -0300 | [diff] [blame] | 1519 | |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 1520 | if (!icd->parent) |
Guennadi Liakhovetski | 40e2e09 | 2009-08-25 11:28:22 -0300 | [diff] [blame] | 1521 | return -ENODEV; |
| 1522 | |
Laurent Pinchart | 46b2109 | 2009-12-10 11:51:38 -0200 | [diff] [blame] | 1523 | ret = video_register_device(icd->vdev, VFL_TYPE_GRABBER, -1); |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 1524 | if (ret < 0) { |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 1525 | dev_err(icd->pdev, "video_register_device failed: %d\n", ret); |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 1526 | return ret; |
| 1527 | } |
Guennadi Liakhovetski | 40e2e09 | 2009-08-25 11:28:22 -0300 | [diff] [blame] | 1528 | |
Mauro Carvalho Chehab | 4f9fb5e | 2010-05-18 00:46:09 -0300 | [diff] [blame] | 1529 | /* Restore device type, possibly set by the subdevice driver */ |
| 1530 | icd->vdev->dev.type = type; |
| 1531 | |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 1532 | return 0; |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 1533 | } |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 1534 | |
Guennadi Liakhovetski | c41deba | 2009-08-25 11:06:21 -0300 | [diff] [blame] | 1535 | static int __devinit soc_camera_pdrv_probe(struct platform_device *pdev) |
| 1536 | { |
| 1537 | struct soc_camera_link *icl = pdev->dev.platform_data; |
Guennadi Liakhovetski | 40e2e09 | 2009-08-25 11:28:22 -0300 | [diff] [blame] | 1538 | struct soc_camera_device *icd; |
Guennadi Liakhovetski | 8a97d4c | 2013-01-03 11:21:02 -0300 | [diff] [blame] | 1539 | int ret; |
Guennadi Liakhovetski | c41deba | 2009-08-25 11:06:21 -0300 | [diff] [blame] | 1540 | |
| 1541 | if (!icl) |
| 1542 | return -EINVAL; |
| 1543 | |
Sachin Kamat | 02249369 | 2012-09-05 08:25:26 -0300 | [diff] [blame] | 1544 | icd = devm_kzalloc(&pdev->dev, sizeof(*icd), GFP_KERNEL); |
Guennadi Liakhovetski | 40e2e09 | 2009-08-25 11:28:22 -0300 | [diff] [blame] | 1545 | if (!icd) |
| 1546 | return -ENOMEM; |
Guennadi Liakhovetski | c41deba | 2009-08-25 11:06:21 -0300 | [diff] [blame] | 1547 | |
Guennadi Liakhovetski | 8a97d4c | 2013-01-03 11:21:02 -0300 | [diff] [blame] | 1548 | ret = devm_regulator_bulk_get(&pdev->dev, icl->num_regulators, |
| 1549 | icl->regulators); |
| 1550 | if (ret < 0) |
| 1551 | return ret; |
| 1552 | |
Guennadi Liakhovetski | 40e2e09 | 2009-08-25 11:28:22 -0300 | [diff] [blame] | 1553 | icd->iface = icl->bus_id; |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 1554 | icd->link = icl; |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 1555 | icd->pdev = &pdev->dev; |
Guennadi Liakhovetski | 40e2e09 | 2009-08-25 11:28:22 -0300 | [diff] [blame] | 1556 | platform_set_drvdata(pdev, icd); |
Guennadi Liakhovetski | 40e2e09 | 2009-08-25 11:28:22 -0300 | [diff] [blame] | 1557 | |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 1558 | icd->user_width = DEFAULT_WIDTH; |
| 1559 | icd->user_height = DEFAULT_HEIGHT; |
| 1560 | |
Sachin Kamat | 02249369 | 2012-09-05 08:25:26 -0300 | [diff] [blame] | 1561 | return soc_camera_device_register(icd); |
Guennadi Liakhovetski | c41deba | 2009-08-25 11:06:21 -0300 | [diff] [blame] | 1562 | } |
| 1563 | |
Guennadi Liakhovetski | 5d28d52 | 2009-12-11 11:15:05 -0300 | [diff] [blame] | 1564 | /* |
| 1565 | * Only called on rmmod for each platform device, since they are not |
Guennadi Liakhovetski | 40e2e09 | 2009-08-25 11:28:22 -0300 | [diff] [blame] | 1566 | * 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] | 1567 | * been unloaded already |
| 1568 | */ |
Guennadi Liakhovetski | c41deba | 2009-08-25 11:06:21 -0300 | [diff] [blame] | 1569 | static int __devexit soc_camera_pdrv_remove(struct platform_device *pdev) |
| 1570 | { |
Guennadi Liakhovetski | 40e2e09 | 2009-08-25 11:28:22 -0300 | [diff] [blame] | 1571 | struct soc_camera_device *icd = platform_get_drvdata(pdev); |
Guennadi Liakhovetski | c41deba | 2009-08-25 11:06:21 -0300 | [diff] [blame] | 1572 | |
Guennadi Liakhovetski | 40e2e09 | 2009-08-25 11:28:22 -0300 | [diff] [blame] | 1573 | if (!icd) |
| 1574 | return -EINVAL; |
| 1575 | |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 1576 | list_del(&icd->list); |
Guennadi Liakhovetski | 40e2e09 | 2009-08-25 11:28:22 -0300 | [diff] [blame] | 1577 | |
Guennadi Liakhovetski | 0fd327b | 2009-05-07 13:25:32 -0300 | [diff] [blame] | 1578 | return 0; |
| 1579 | } |
| 1580 | |
| 1581 | static struct platform_driver __refdata soc_camera_pdrv = { |
Laurent Pinchart | 1858c99 | 2012-07-18 10:53:56 -0300 | [diff] [blame] | 1582 | .probe = soc_camera_pdrv_probe, |
Guennadi Liakhovetski | 40e2e09 | 2009-08-25 11:28:22 -0300 | [diff] [blame] | 1583 | .remove = __devexit_p(soc_camera_pdrv_remove), |
| 1584 | .driver = { |
| 1585 | .name = "soc-camera-pdrv", |
| 1586 | .owner = THIS_MODULE, |
Guennadi Liakhovetski | 0fd327b | 2009-05-07 13:25:32 -0300 | [diff] [blame] | 1587 | }, |
| 1588 | }; |
| 1589 | |
Sachin Kamat | ec0341b | 2012-09-05 08:25:27 -0300 | [diff] [blame] | 1590 | module_platform_driver(soc_camera_pdrv); |
Guennadi Liakhovetski | e55222e | 2008-04-22 14:42:03 -0300 | [diff] [blame] | 1591 | |
| 1592 | MODULE_DESCRIPTION("Image capture bus driver"); |
| 1593 | MODULE_AUTHOR("Guennadi Liakhovetski <kernel@pengutronix.de>"); |
| 1594 | MODULE_LICENSE("GPL"); |
Guennadi Liakhovetski | 0fd327b | 2009-05-07 13:25:32 -0300 | [diff] [blame] | 1595 | MODULE_ALIAS("platform:soc-camera-pdrv"); |