Guennadi Liakhovetski | 077e2c1 | 2010-07-26 11:12:43 -0300 | [diff] [blame] | 1 | /* |
| 2 | * Driver for the SH-Mobile MIPI CSI-2 unit |
| 3 | * |
| 4 | * Copyright (C) 2010, Guennadi Liakhovetski <g.liakhovetski@gmx.de> |
| 5 | * |
| 6 | * This program is free software; you can redistribute it and/or modify |
| 7 | * it under the terms of the GNU General Public License version 2 as |
| 8 | * published by the Free Software Foundation. |
| 9 | */ |
| 10 | |
| 11 | #include <linux/delay.h> |
| 12 | #include <linux/i2c.h> |
| 13 | #include <linux/io.h> |
| 14 | #include <linux/platform_device.h> |
| 15 | #include <linux/pm_runtime.h> |
| 16 | #include <linux/slab.h> |
| 17 | #include <linux/videodev2.h> |
Paul Gortmaker | 7a707b8 | 2011-07-03 14:03:12 -0400 | [diff] [blame] | 18 | #include <linux/module.h> |
Guennadi Liakhovetski | 077e2c1 | 2010-07-26 11:12:43 -0300 | [diff] [blame] | 19 | |
Guennadi Liakhovetski | 6b526fe | 2011-07-01 11:19:58 -0300 | [diff] [blame] | 20 | #include <media/sh_mobile_ceu.h> |
Guennadi Liakhovetski | 077e2c1 | 2010-07-26 11:12:43 -0300 | [diff] [blame] | 21 | #include <media/sh_mobile_csi2.h> |
| 22 | #include <media/soc_camera.h> |
Guennadi Liakhovetski | f836c62 | 2011-07-26 13:13:47 -0300 | [diff] [blame] | 23 | #include <media/soc_mediabus.h> |
Guennadi Liakhovetski | 077e2c1 | 2010-07-26 11:12:43 -0300 | [diff] [blame] | 24 | #include <media/v4l2-common.h> |
| 25 | #include <media/v4l2-dev.h> |
| 26 | #include <media/v4l2-device.h> |
| 27 | #include <media/v4l2-mediabus.h> |
| 28 | #include <media/v4l2-subdev.h> |
| 29 | |
| 30 | #define SH_CSI2_TREF 0x00 |
| 31 | #define SH_CSI2_SRST 0x04 |
| 32 | #define SH_CSI2_PHYCNT 0x08 |
| 33 | #define SH_CSI2_CHKSUM 0x0C |
| 34 | #define SH_CSI2_VCDT 0x10 |
| 35 | |
| 36 | struct sh_csi2 { |
| 37 | struct v4l2_subdev subdev; |
| 38 | struct list_head list; |
Guennadi Liakhovetski | 077e2c1 | 2010-07-26 11:12:43 -0300 | [diff] [blame] | 39 | unsigned int irq; |
Guennadi Liakhovetski | 022e52c | 2011-07-26 13:19:01 -0300 | [diff] [blame] | 40 | unsigned long mipi_flags; |
Guennadi Liakhovetski | 077e2c1 | 2010-07-26 11:12:43 -0300 | [diff] [blame] | 41 | void __iomem *base; |
| 42 | struct platform_device *pdev; |
| 43 | struct sh_csi2_client_config *client; |
| 44 | }; |
| 45 | |
| 46 | static int sh_csi2_try_fmt(struct v4l2_subdev *sd, |
| 47 | struct v4l2_mbus_framefmt *mf) |
| 48 | { |
| 49 | struct sh_csi2 *priv = container_of(sd, struct sh_csi2, subdev); |
| 50 | struct sh_csi2_pdata *pdata = priv->pdev->dev.platform_data; |
| 51 | |
| 52 | if (mf->width > 8188) |
| 53 | mf->width = 8188; |
| 54 | else if (mf->width & 1) |
| 55 | mf->width &= ~1; |
| 56 | |
| 57 | switch (pdata->type) { |
| 58 | case SH_CSI2C: |
| 59 | switch (mf->code) { |
| 60 | case V4L2_MBUS_FMT_UYVY8_2X8: /* YUV422 */ |
| 61 | case V4L2_MBUS_FMT_YUYV8_1_5X8: /* YUV420 */ |
Laurent Pinchart | 07670433 | 2010-09-28 07:01:44 -0300 | [diff] [blame] | 62 | case V4L2_MBUS_FMT_Y8_1X8: /* RAW8 */ |
Guennadi Liakhovetski | 077e2c1 | 2010-07-26 11:12:43 -0300 | [diff] [blame] | 63 | case V4L2_MBUS_FMT_SBGGR8_1X8: |
| 64 | case V4L2_MBUS_FMT_SGRBG8_1X8: |
| 65 | break; |
| 66 | default: |
| 67 | /* All MIPI CSI-2 devices must support one of primary formats */ |
| 68 | mf->code = V4L2_MBUS_FMT_YUYV8_2X8; |
| 69 | } |
| 70 | break; |
| 71 | case SH_CSI2I: |
| 72 | switch (mf->code) { |
Laurent Pinchart | 07670433 | 2010-09-28 07:01:44 -0300 | [diff] [blame] | 73 | case V4L2_MBUS_FMT_Y8_1X8: /* RAW8 */ |
Guennadi Liakhovetski | 077e2c1 | 2010-07-26 11:12:43 -0300 | [diff] [blame] | 74 | case V4L2_MBUS_FMT_SBGGR8_1X8: |
| 75 | case V4L2_MBUS_FMT_SGRBG8_1X8: |
| 76 | case V4L2_MBUS_FMT_SBGGR10_1X10: /* RAW10 */ |
| 77 | case V4L2_MBUS_FMT_SBGGR12_1X12: /* RAW12 */ |
| 78 | break; |
| 79 | default: |
| 80 | /* All MIPI CSI-2 devices must support one of primary formats */ |
| 81 | mf->code = V4L2_MBUS_FMT_SBGGR8_1X8; |
| 82 | } |
| 83 | break; |
| 84 | } |
| 85 | |
| 86 | return 0; |
| 87 | } |
| 88 | |
| 89 | /* |
| 90 | * We have done our best in try_fmt to try and tell the sensor, which formats |
| 91 | * we support. If now the configuration is unsuitable for us we can only |
| 92 | * error out. |
| 93 | */ |
| 94 | static int sh_csi2_s_fmt(struct v4l2_subdev *sd, |
| 95 | struct v4l2_mbus_framefmt *mf) |
| 96 | { |
| 97 | struct sh_csi2 *priv = container_of(sd, struct sh_csi2, subdev); |
| 98 | u32 tmp = (priv->client->channel & 3) << 8; |
| 99 | |
| 100 | dev_dbg(sd->v4l2_dev->dev, "%s(%u)\n", __func__, mf->code); |
| 101 | if (mf->width > 8188 || mf->width & 1) |
| 102 | return -EINVAL; |
| 103 | |
| 104 | switch (mf->code) { |
| 105 | case V4L2_MBUS_FMT_UYVY8_2X8: |
| 106 | tmp |= 0x1e; /* YUV422 8 bit */ |
| 107 | break; |
| 108 | case V4L2_MBUS_FMT_YUYV8_1_5X8: |
| 109 | tmp |= 0x18; /* YUV420 8 bit */ |
| 110 | break; |
| 111 | case V4L2_MBUS_FMT_RGB555_2X8_PADHI_BE: |
| 112 | tmp |= 0x21; /* RGB555 */ |
| 113 | break; |
| 114 | case V4L2_MBUS_FMT_RGB565_2X8_BE: |
| 115 | tmp |= 0x22; /* RGB565 */ |
| 116 | break; |
Laurent Pinchart | 07670433 | 2010-09-28 07:01:44 -0300 | [diff] [blame] | 117 | case V4L2_MBUS_FMT_Y8_1X8: |
Guennadi Liakhovetski | 077e2c1 | 2010-07-26 11:12:43 -0300 | [diff] [blame] | 118 | case V4L2_MBUS_FMT_SBGGR8_1X8: |
| 119 | case V4L2_MBUS_FMT_SGRBG8_1X8: |
| 120 | tmp |= 0x2a; /* RAW8 */ |
| 121 | break; |
| 122 | default: |
| 123 | return -EINVAL; |
| 124 | } |
| 125 | |
| 126 | iowrite32(tmp, priv->base + SH_CSI2_VCDT); |
| 127 | |
| 128 | return 0; |
| 129 | } |
| 130 | |
Guennadi Liakhovetski | 022e52c | 2011-07-26 13:19:01 -0300 | [diff] [blame] | 131 | static int sh_csi2_g_mbus_config(struct v4l2_subdev *sd, |
| 132 | struct v4l2_mbus_config *cfg) |
| 133 | { |
| 134 | cfg->flags = V4L2_MBUS_PCLK_SAMPLE_RISING | |
| 135 | V4L2_MBUS_HSYNC_ACTIVE_HIGH | V4L2_MBUS_VSYNC_ACTIVE_HIGH | |
| 136 | V4L2_MBUS_MASTER | V4L2_MBUS_DATA_ACTIVE_HIGH; |
| 137 | cfg->type = V4L2_MBUS_PARALLEL; |
| 138 | |
| 139 | return 0; |
| 140 | } |
| 141 | |
| 142 | static int sh_csi2_s_mbus_config(struct v4l2_subdev *sd, |
| 143 | const struct v4l2_mbus_config *cfg) |
| 144 | { |
| 145 | struct sh_csi2 *priv = container_of(sd, struct sh_csi2, subdev); |
Guennadi Liakhovetski | 4c0b036 | 2011-12-05 16:01:13 -0300 | [diff] [blame] | 146 | struct soc_camera_device *icd = v4l2_get_subdev_hostdata(sd); |
Guennadi Liakhovetski | 022e52c | 2011-07-26 13:19:01 -0300 | [diff] [blame] | 147 | struct v4l2_subdev *client_sd = soc_camera_to_subdev(icd); |
| 148 | struct v4l2_mbus_config client_cfg = {.type = V4L2_MBUS_CSI2, |
| 149 | .flags = priv->mipi_flags}; |
| 150 | |
| 151 | return v4l2_subdev_call(client_sd, video, s_mbus_config, &client_cfg); |
| 152 | } |
| 153 | |
Guennadi Liakhovetski | 077e2c1 | 2010-07-26 11:12:43 -0300 | [diff] [blame] | 154 | static struct v4l2_subdev_video_ops sh_csi2_subdev_video_ops = { |
| 155 | .s_mbus_fmt = sh_csi2_s_fmt, |
| 156 | .try_mbus_fmt = sh_csi2_try_fmt, |
Guennadi Liakhovetski | 022e52c | 2011-07-26 13:19:01 -0300 | [diff] [blame] | 157 | .g_mbus_config = sh_csi2_g_mbus_config, |
| 158 | .s_mbus_config = sh_csi2_s_mbus_config, |
Guennadi Liakhovetski | 077e2c1 | 2010-07-26 11:12:43 -0300 | [diff] [blame] | 159 | }; |
| 160 | |
Guennadi Liakhovetski | 077e2c1 | 2010-07-26 11:12:43 -0300 | [diff] [blame] | 161 | static void sh_csi2_hwinit(struct sh_csi2 *priv) |
| 162 | { |
| 163 | struct sh_csi2_pdata *pdata = priv->pdev->dev.platform_data; |
| 164 | __u32 tmp = 0x10; /* Enable MIPI CSI clock lane */ |
| 165 | |
| 166 | /* Reflect registers immediately */ |
| 167 | iowrite32(0x00000001, priv->base + SH_CSI2_TREF); |
| 168 | /* reset CSI2 harware */ |
| 169 | iowrite32(0x00000001, priv->base + SH_CSI2_SRST); |
| 170 | udelay(5); |
| 171 | iowrite32(0x00000000, priv->base + SH_CSI2_SRST); |
| 172 | |
Guennadi Liakhovetski | f836c62 | 2011-07-26 13:13:47 -0300 | [diff] [blame] | 173 | switch (pdata->type) { |
| 174 | case SH_CSI2C: |
| 175 | if (priv->client->lanes == 1) |
| 176 | tmp |= 1; |
| 177 | else |
| 178 | /* Default - both lanes */ |
| 179 | tmp |= 3; |
| 180 | break; |
| 181 | case SH_CSI2I: |
| 182 | if (!priv->client->lanes || priv->client->lanes > 4) |
| 183 | /* Default - all 4 lanes */ |
| 184 | tmp |= 0xf; |
| 185 | else |
| 186 | tmp |= (1 << priv->client->lanes) - 1; |
| 187 | } |
Guennadi Liakhovetski | 077e2c1 | 2010-07-26 11:12:43 -0300 | [diff] [blame] | 188 | |
| 189 | if (priv->client->phy == SH_CSI2_PHY_MAIN) |
| 190 | tmp |= 0x8000; |
| 191 | |
| 192 | iowrite32(tmp, priv->base + SH_CSI2_PHYCNT); |
| 193 | |
| 194 | tmp = 0; |
| 195 | if (pdata->flags & SH_CSI2_ECC) |
| 196 | tmp |= 2; |
| 197 | if (pdata->flags & SH_CSI2_CRC) |
| 198 | tmp |= 1; |
| 199 | iowrite32(tmp, priv->base + SH_CSI2_CHKSUM); |
| 200 | } |
| 201 | |
Guennadi Liakhovetski | 6b526fe | 2011-07-01 11:19:58 -0300 | [diff] [blame] | 202 | static int sh_csi2_client_connect(struct sh_csi2 *priv) |
Guennadi Liakhovetski | 077e2c1 | 2010-07-26 11:12:43 -0300 | [diff] [blame] | 203 | { |
Guennadi Liakhovetski | 077e2c1 | 2010-07-26 11:12:43 -0300 | [diff] [blame] | 204 | struct sh_csi2_pdata *pdata = priv->pdev->dev.platform_data; |
Guennadi Liakhovetski | 4c0b036 | 2011-12-05 16:01:13 -0300 | [diff] [blame] | 205 | struct soc_camera_device *icd = v4l2_get_subdev_hostdata(&priv->subdev); |
Guennadi Liakhovetski | da83d9d | 2011-09-05 08:26:20 -0300 | [diff] [blame] | 206 | struct v4l2_subdev *client_sd = soc_camera_to_subdev(icd); |
Guennadi Liakhovetski | 6b526fe | 2011-07-01 11:19:58 -0300 | [diff] [blame] | 207 | struct device *dev = v4l2_get_subdevdata(&priv->subdev); |
Guennadi Liakhovetski | f836c62 | 2011-07-26 13:13:47 -0300 | [diff] [blame] | 208 | struct v4l2_mbus_config cfg; |
| 209 | unsigned long common_flags, csi2_flags; |
| 210 | int i, ret; |
Guennadi Liakhovetski | 6b526fe | 2011-07-01 11:19:58 -0300 | [diff] [blame] | 211 | |
Guennadi Liakhovetski | 2fbdc9b | 2011-09-09 06:40:56 -0300 | [diff] [blame] | 212 | if (priv->client) |
| 213 | return -EBUSY; |
| 214 | |
Guennadi Liakhovetski | 077e2c1 | 2010-07-26 11:12:43 -0300 | [diff] [blame] | 215 | for (i = 0; i < pdata->num_clients; i++) |
| 216 | if (&pdata->clients[i].pdev->dev == icd->pdev) |
| 217 | break; |
| 218 | |
Guennadi Liakhovetski | 6b526fe | 2011-07-01 11:19:58 -0300 | [diff] [blame] | 219 | dev_dbg(dev, "%s(%p): found #%d\n", __func__, dev, i); |
Guennadi Liakhovetski | 077e2c1 | 2010-07-26 11:12:43 -0300 | [diff] [blame] | 220 | |
| 221 | if (i == pdata->num_clients) |
Guennadi Liakhovetski | 6b526fe | 2011-07-01 11:19:58 -0300 | [diff] [blame] | 222 | return -ENODEV; |
Guennadi Liakhovetski | 077e2c1 | 2010-07-26 11:12:43 -0300 | [diff] [blame] | 223 | |
Guennadi Liakhovetski | f836c62 | 2011-07-26 13:13:47 -0300 | [diff] [blame] | 224 | /* Check if we can support this camera */ |
| 225 | csi2_flags = V4L2_MBUS_CSI2_CONTINUOUS_CLOCK | V4L2_MBUS_CSI2_1_LANE; |
| 226 | |
| 227 | switch (pdata->type) { |
| 228 | case SH_CSI2C: |
| 229 | if (pdata->clients[i].lanes != 1) |
| 230 | csi2_flags |= V4L2_MBUS_CSI2_2_LANE; |
| 231 | break; |
| 232 | case SH_CSI2I: |
| 233 | switch (pdata->clients[i].lanes) { |
| 234 | default: |
| 235 | csi2_flags |= V4L2_MBUS_CSI2_4_LANE; |
| 236 | case 3: |
| 237 | csi2_flags |= V4L2_MBUS_CSI2_3_LANE; |
| 238 | case 2: |
| 239 | csi2_flags |= V4L2_MBUS_CSI2_2_LANE; |
| 240 | } |
| 241 | } |
| 242 | |
| 243 | cfg.type = V4L2_MBUS_CSI2; |
Guennadi Liakhovetski | da83d9d | 2011-09-05 08:26:20 -0300 | [diff] [blame] | 244 | ret = v4l2_subdev_call(client_sd, video, g_mbus_config, &cfg); |
Guennadi Liakhovetski | f836c62 | 2011-07-26 13:13:47 -0300 | [diff] [blame] | 245 | if (ret == -ENOIOCTLCMD) |
| 246 | common_flags = csi2_flags; |
| 247 | else if (!ret) |
| 248 | common_flags = soc_mbus_config_compatible(&cfg, |
| 249 | csi2_flags); |
| 250 | else |
| 251 | common_flags = 0; |
| 252 | |
| 253 | if (!common_flags) |
| 254 | return -EINVAL; |
| 255 | |
| 256 | /* All good: camera MIPI configuration supported */ |
Guennadi Liakhovetski | 022e52c | 2011-07-26 13:19:01 -0300 | [diff] [blame] | 257 | priv->mipi_flags = common_flags; |
Guennadi Liakhovetski | 6b526fe | 2011-07-01 11:19:58 -0300 | [diff] [blame] | 258 | priv->client = pdata->clients + i; |
Guennadi Liakhovetski | 077e2c1 | 2010-07-26 11:12:43 -0300 | [diff] [blame] | 259 | |
Guennadi Liakhovetski | 6b526fe | 2011-07-01 11:19:58 -0300 | [diff] [blame] | 260 | pm_runtime_get_sync(dev); |
Guennadi Liakhovetski | 077e2c1 | 2010-07-26 11:12:43 -0300 | [diff] [blame] | 261 | |
Guennadi Liakhovetski | 6b526fe | 2011-07-01 11:19:58 -0300 | [diff] [blame] | 262 | sh_csi2_hwinit(priv); |
Guennadi Liakhovetski | 077e2c1 | 2010-07-26 11:12:43 -0300 | [diff] [blame] | 263 | |
Guennadi Liakhovetski | 6b526fe | 2011-07-01 11:19:58 -0300 | [diff] [blame] | 264 | return 0; |
Guennadi Liakhovetski | 077e2c1 | 2010-07-26 11:12:43 -0300 | [diff] [blame] | 265 | } |
| 266 | |
Guennadi Liakhovetski | 6b526fe | 2011-07-01 11:19:58 -0300 | [diff] [blame] | 267 | static void sh_csi2_client_disconnect(struct sh_csi2 *priv) |
| 268 | { |
Guennadi Liakhovetski | 2fbdc9b | 2011-09-09 06:40:56 -0300 | [diff] [blame] | 269 | if (!priv->client) |
| 270 | return; |
| 271 | |
Guennadi Liakhovetski | 6b526fe | 2011-07-01 11:19:58 -0300 | [diff] [blame] | 272 | priv->client = NULL; |
Guennadi Liakhovetski | 6b526fe | 2011-07-01 11:19:58 -0300 | [diff] [blame] | 273 | |
Guennadi Liakhovetski | 6b526fe | 2011-07-01 11:19:58 -0300 | [diff] [blame] | 274 | pm_runtime_put(v4l2_get_subdevdata(&priv->subdev)); |
| 275 | } |
| 276 | |
| 277 | static int sh_csi2_s_power(struct v4l2_subdev *sd, int on) |
| 278 | { |
| 279 | struct sh_csi2 *priv = container_of(sd, struct sh_csi2, subdev); |
| 280 | |
| 281 | if (on) |
| 282 | return sh_csi2_client_connect(priv); |
| 283 | |
| 284 | sh_csi2_client_disconnect(priv); |
| 285 | return 0; |
| 286 | } |
| 287 | |
| 288 | static struct v4l2_subdev_core_ops sh_csi2_subdev_core_ops = { |
| 289 | .s_power = sh_csi2_s_power, |
| 290 | }; |
| 291 | |
| 292 | static struct v4l2_subdev_ops sh_csi2_subdev_ops = { |
| 293 | .core = &sh_csi2_subdev_core_ops, |
| 294 | .video = &sh_csi2_subdev_video_ops, |
| 295 | }; |
| 296 | |
Guennadi Liakhovetski | 077e2c1 | 2010-07-26 11:12:43 -0300 | [diff] [blame] | 297 | static __devinit int sh_csi2_probe(struct platform_device *pdev) |
| 298 | { |
| 299 | struct resource *res; |
| 300 | unsigned int irq; |
| 301 | int ret; |
| 302 | struct sh_csi2 *priv; |
| 303 | /* Platform data specify the PHY, lanes, ECC, CRC */ |
| 304 | struct sh_csi2_pdata *pdata = pdev->dev.platform_data; |
| 305 | |
| 306 | res = platform_get_resource(pdev, IORESOURCE_MEM, 0); |
| 307 | /* Interrupt unused so far */ |
| 308 | irq = platform_get_irq(pdev, 0); |
| 309 | |
| 310 | if (!res || (int)irq <= 0 || !pdata) { |
| 311 | dev_err(&pdev->dev, "Not enough CSI2 platform resources.\n"); |
| 312 | return -ENODEV; |
| 313 | } |
| 314 | |
| 315 | /* TODO: Add support for CSI2I. Careful: different register layout! */ |
| 316 | if (pdata->type != SH_CSI2C) { |
| 317 | dev_err(&pdev->dev, "Only CSI2C supported ATM.\n"); |
| 318 | return -EINVAL; |
| 319 | } |
| 320 | |
Guennadi Liakhovetski | f8cabc3 | 2012-10-10 05:02:30 -0300 | [diff] [blame] | 321 | priv = devm_kzalloc(&pdev->dev, sizeof(struct sh_csi2), GFP_KERNEL); |
Guennadi Liakhovetski | 077e2c1 | 2010-07-26 11:12:43 -0300 | [diff] [blame] | 322 | if (!priv) |
| 323 | return -ENOMEM; |
| 324 | |
| 325 | priv->irq = irq; |
Guennadi Liakhovetski | 077e2c1 | 2010-07-26 11:12:43 -0300 | [diff] [blame] | 326 | |
Guennadi Liakhovetski | f8cabc3 | 2012-10-10 05:02:30 -0300 | [diff] [blame] | 327 | priv->base = devm_request_and_ioremap(&pdev->dev, res); |
Guennadi Liakhovetski | 077e2c1 | 2010-07-26 11:12:43 -0300 | [diff] [blame] | 328 | if (!priv->base) { |
Guennadi Liakhovetski | 077e2c1 | 2010-07-26 11:12:43 -0300 | [diff] [blame] | 329 | dev_err(&pdev->dev, "Unable to ioremap CSI2 registers.\n"); |
Guennadi Liakhovetski | f8cabc3 | 2012-10-10 05:02:30 -0300 | [diff] [blame] | 330 | return -ENXIO; |
Guennadi Liakhovetski | 077e2c1 | 2010-07-26 11:12:43 -0300 | [diff] [blame] | 331 | } |
| 332 | |
| 333 | priv->pdev = pdev; |
Guennadi Liakhovetski | 6b526fe | 2011-07-01 11:19:58 -0300 | [diff] [blame] | 334 | platform_set_drvdata(pdev, priv); |
Guennadi Liakhovetski | 077e2c1 | 2010-07-26 11:12:43 -0300 | [diff] [blame] | 335 | |
| 336 | v4l2_subdev_init(&priv->subdev, &sh_csi2_subdev_ops); |
| 337 | v4l2_set_subdevdata(&priv->subdev, &pdev->dev); |
| 338 | |
Guennadi Liakhovetski | 6b526fe | 2011-07-01 11:19:58 -0300 | [diff] [blame] | 339 | snprintf(priv->subdev.name, V4L2_SUBDEV_NAME_SIZE, "%s.mipi-csi", |
| 340 | dev_name(pdata->v4l2_dev->dev)); |
| 341 | ret = v4l2_device_register_subdev(pdata->v4l2_dev, &priv->subdev); |
| 342 | dev_dbg(&pdev->dev, "%s(%p): ret(register_subdev) = %d\n", __func__, priv, ret); |
| 343 | if (ret < 0) |
| 344 | goto esdreg; |
Guennadi Liakhovetski | 077e2c1 | 2010-07-26 11:12:43 -0300 | [diff] [blame] | 345 | |
| 346 | pm_runtime_enable(&pdev->dev); |
| 347 | |
| 348 | dev_dbg(&pdev->dev, "CSI2 probed.\n"); |
| 349 | |
| 350 | return 0; |
| 351 | |
Guennadi Liakhovetski | 6b526fe | 2011-07-01 11:19:58 -0300 | [diff] [blame] | 352 | esdreg: |
Guennadi Liakhovetski | f8cabc3 | 2012-10-10 05:02:30 -0300 | [diff] [blame] | 353 | platform_set_drvdata(pdev, NULL); |
Guennadi Liakhovetski | 077e2c1 | 2010-07-26 11:12:43 -0300 | [diff] [blame] | 354 | |
| 355 | return ret; |
| 356 | } |
| 357 | |
| 358 | static __devexit int sh_csi2_remove(struct platform_device *pdev) |
| 359 | { |
| 360 | struct sh_csi2 *priv = platform_get_drvdata(pdev); |
Guennadi Liakhovetski | 077e2c1 | 2010-07-26 11:12:43 -0300 | [diff] [blame] | 361 | |
Guennadi Liakhovetski | 6b526fe | 2011-07-01 11:19:58 -0300 | [diff] [blame] | 362 | v4l2_device_unregister_subdev(&priv->subdev); |
Guennadi Liakhovetski | 077e2c1 | 2010-07-26 11:12:43 -0300 | [diff] [blame] | 363 | pm_runtime_disable(&pdev->dev); |
Guennadi Liakhovetski | 077e2c1 | 2010-07-26 11:12:43 -0300 | [diff] [blame] | 364 | platform_set_drvdata(pdev, NULL); |
Guennadi Liakhovetski | 077e2c1 | 2010-07-26 11:12:43 -0300 | [diff] [blame] | 365 | |
| 366 | return 0; |
| 367 | } |
| 368 | |
| 369 | static struct platform_driver __refdata sh_csi2_pdrv = { |
Guennadi Liakhovetski | 6b526fe | 2011-07-01 11:19:58 -0300 | [diff] [blame] | 370 | .remove = __devexit_p(sh_csi2_remove), |
| 371 | .probe = sh_csi2_probe, |
| 372 | .driver = { |
Guennadi Liakhovetski | 077e2c1 | 2010-07-26 11:12:43 -0300 | [diff] [blame] | 373 | .name = "sh-mobile-csi2", |
| 374 | .owner = THIS_MODULE, |
| 375 | }, |
| 376 | }; |
| 377 | |
Axel Lin | 1d6629b | 2012-01-10 03:21:49 -0300 | [diff] [blame] | 378 | module_platform_driver(sh_csi2_pdrv); |
Guennadi Liakhovetski | 077e2c1 | 2010-07-26 11:12:43 -0300 | [diff] [blame] | 379 | |
| 380 | MODULE_DESCRIPTION("SH-Mobile MIPI CSI-2 driver"); |
| 381 | MODULE_AUTHOR("Guennadi Liakhovetski <g.liakhovetski@gmx.de>"); |
| 382 | MODULE_LICENSE("GPL v2"); |
| 383 | MODULE_ALIAS("platform:sh-mobile-csi2"); |