Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 1 | /* |
| 2 | * V4L2 Driver for i.MX3x camera host |
| 3 | * |
| 4 | * Copyright (C) 2008 |
| 5 | * Guennadi Liakhovetski, DENX Software Engineering, <lg@denx.de> |
| 6 | * |
| 7 | * This program is free software; you can redistribute it and/or modify |
| 8 | * it under the terms of the GNU General Public License version 2 as |
| 9 | * published by the Free Software Foundation. |
| 10 | */ |
| 11 | |
| 12 | #include <linux/init.h> |
| 13 | #include <linux/module.h> |
| 14 | #include <linux/version.h> |
| 15 | #include <linux/videodev2.h> |
| 16 | #include <linux/platform_device.h> |
| 17 | #include <linux/clk.h> |
| 18 | #include <linux/vmalloc.h> |
| 19 | #include <linux/interrupt.h> |
Guennadi Liakhovetski | f39c1ab | 2009-11-09 16:11:34 -0300 | [diff] [blame] | 20 | #include <linux/sched.h> |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 21 | |
| 22 | #include <media/v4l2-common.h> |
| 23 | #include <media/v4l2-dev.h> |
Guennadi Liakhovetski | 379fa5d | 2011-02-21 07:14:01 -0300 | [diff] [blame] | 24 | #include <media/videobuf2-dma-contig.h> |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 25 | #include <media/soc_camera.h> |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 26 | #include <media/soc_mediabus.h> |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 27 | |
| 28 | #include <mach/ipu.h> |
| 29 | #include <mach/mx3_camera.h> |
Sascha Hauer | a8de663 | 2010-11-05 06:26:03 -0300 | [diff] [blame] | 30 | #include <mach/dma.h> |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 31 | |
| 32 | #define MX3_CAM_DRV_NAME "mx3-camera" |
| 33 | |
| 34 | /* CMOS Sensor Interface Registers */ |
| 35 | #define CSI_REG_START 0x60 |
| 36 | |
| 37 | #define CSI_SENS_CONF (0x60 - CSI_REG_START) |
| 38 | #define CSI_SENS_FRM_SIZE (0x64 - CSI_REG_START) |
| 39 | #define CSI_ACT_FRM_SIZE (0x68 - CSI_REG_START) |
| 40 | #define CSI_OUT_FRM_CTRL (0x6C - CSI_REG_START) |
| 41 | #define CSI_TST_CTRL (0x70 - CSI_REG_START) |
| 42 | #define CSI_CCIR_CODE_1 (0x74 - CSI_REG_START) |
| 43 | #define CSI_CCIR_CODE_2 (0x78 - CSI_REG_START) |
| 44 | #define CSI_CCIR_CODE_3 (0x7C - CSI_REG_START) |
| 45 | #define CSI_FLASH_STROBE_1 (0x80 - CSI_REG_START) |
| 46 | #define CSI_FLASH_STROBE_2 (0x84 - CSI_REG_START) |
| 47 | |
| 48 | #define CSI_SENS_CONF_VSYNC_POL_SHIFT 0 |
| 49 | #define CSI_SENS_CONF_HSYNC_POL_SHIFT 1 |
| 50 | #define CSI_SENS_CONF_DATA_POL_SHIFT 2 |
| 51 | #define CSI_SENS_CONF_PIX_CLK_POL_SHIFT 3 |
| 52 | #define CSI_SENS_CONF_SENS_PRTCL_SHIFT 4 |
| 53 | #define CSI_SENS_CONF_SENS_CLKSRC_SHIFT 7 |
| 54 | #define CSI_SENS_CONF_DATA_FMT_SHIFT 8 |
| 55 | #define CSI_SENS_CONF_DATA_WIDTH_SHIFT 10 |
| 56 | #define CSI_SENS_CONF_EXT_VSYNC_SHIFT 15 |
| 57 | #define CSI_SENS_CONF_DIVRATIO_SHIFT 16 |
| 58 | |
| 59 | #define CSI_SENS_CONF_DATA_FMT_RGB_YUV444 (0UL << CSI_SENS_CONF_DATA_FMT_SHIFT) |
| 60 | #define CSI_SENS_CONF_DATA_FMT_YUV422 (2UL << CSI_SENS_CONF_DATA_FMT_SHIFT) |
| 61 | #define CSI_SENS_CONF_DATA_FMT_BAYER (3UL << CSI_SENS_CONF_DATA_FMT_SHIFT) |
| 62 | |
| 63 | #define MAX_VIDEO_MEM 16 |
| 64 | |
Guennadi Liakhovetski | 379fa5d | 2011-02-21 07:14:01 -0300 | [diff] [blame] | 65 | enum csi_buffer_state { |
| 66 | CSI_BUF_NEEDS_INIT, |
| 67 | CSI_BUF_PREPARED, |
| 68 | }; |
| 69 | |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 70 | struct mx3_camera_buffer { |
| 71 | /* common v4l buffer stuff -- must be first */ |
Guennadi Liakhovetski | 379fa5d | 2011-02-21 07:14:01 -0300 | [diff] [blame] | 72 | struct vb2_buffer vb; |
| 73 | enum csi_buffer_state state; |
| 74 | struct list_head queue; |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 75 | |
| 76 | /* One descriptot per scatterlist (per frame) */ |
| 77 | struct dma_async_tx_descriptor *txd; |
| 78 | |
| 79 | /* We have to "build" a scatterlist ourselves - one element per frame */ |
| 80 | struct scatterlist sg; |
| 81 | }; |
| 82 | |
| 83 | /** |
| 84 | * struct mx3_camera_dev - i.MX3x camera (CSI) object |
| 85 | * @dev: camera device, to which the coherent buffer is attached |
| 86 | * @icd: currently attached camera sensor |
| 87 | * @clk: pointer to clock |
| 88 | * @base: remapped register base address |
| 89 | * @pdata: platform data |
| 90 | * @platform_flags: platform flags |
| 91 | * @mclk: master clock frequency in Hz |
| 92 | * @capture: list of capture videobuffers |
| 93 | * @lock: protects video buffer lists |
| 94 | * @active: active video buffer |
| 95 | * @idmac_channel: array of pointers to IPU DMAC DMA channels |
| 96 | * @soc_host: embedded soc_host object |
| 97 | */ |
| 98 | struct mx3_camera_dev { |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 99 | /* |
| 100 | * i.MX3x is only supposed to handle one camera on its Camera Sensor |
| 101 | * Interface. If anyone ever builds hardware to enable more than one |
| 102 | * camera _simultaneously_, they will have to modify this driver too |
| 103 | */ |
| 104 | struct soc_camera_device *icd; |
| 105 | struct clk *clk; |
| 106 | |
| 107 | void __iomem *base; |
| 108 | |
| 109 | struct mx3_camera_pdata *pdata; |
| 110 | |
| 111 | unsigned long platform_flags; |
| 112 | unsigned long mclk; |
| 113 | |
| 114 | struct list_head capture; |
| 115 | spinlock_t lock; /* Protects video buffer lists */ |
| 116 | struct mx3_camera_buffer *active; |
Guennadi Liakhovetski | 379fa5d | 2011-02-21 07:14:01 -0300 | [diff] [blame] | 117 | struct vb2_alloc_ctx *alloc_ctx; |
| 118 | enum v4l2_field field; |
| 119 | int sequence; |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 120 | |
| 121 | /* IDMAC / dmaengine interface */ |
| 122 | struct idmac_channel *idmac_channel[1]; /* We need one channel */ |
| 123 | |
| 124 | struct soc_camera_host soc_host; |
| 125 | }; |
| 126 | |
| 127 | struct dma_chan_request { |
| 128 | struct mx3_camera_dev *mx3_cam; |
| 129 | enum ipu_channel id; |
| 130 | }; |
| 131 | |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 132 | static u32 csi_reg_read(struct mx3_camera_dev *mx3, off_t reg) |
| 133 | { |
| 134 | return __raw_readl(mx3->base + reg); |
| 135 | } |
| 136 | |
| 137 | static void csi_reg_write(struct mx3_camera_dev *mx3, u32 value, off_t reg) |
| 138 | { |
| 139 | __raw_writel(value, mx3->base + reg); |
| 140 | } |
| 141 | |
Guennadi Liakhovetski | 379fa5d | 2011-02-21 07:14:01 -0300 | [diff] [blame] | 142 | static struct mx3_camera_buffer *to_mx3_vb(struct vb2_buffer *vb) |
| 143 | { |
| 144 | return container_of(vb, struct mx3_camera_buffer, vb); |
| 145 | } |
| 146 | |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 147 | /* Called from the IPU IDMAC ISR */ |
| 148 | static void mx3_cam_dma_done(void *arg) |
| 149 | { |
| 150 | struct idmac_tx_desc *desc = to_tx_desc(arg); |
| 151 | struct dma_chan *chan = desc->txd.chan; |
| 152 | struct idmac_channel *ichannel = to_idmac_chan(chan); |
| 153 | struct mx3_camera_dev *mx3_cam = ichannel->client; |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 154 | |
| 155 | dev_dbg(chan->device->dev, "callback cookie %d, active DMA 0x%08x\n", |
| 156 | desc->txd.cookie, mx3_cam->active ? sg_dma_address(&mx3_cam->active->sg) : 0); |
| 157 | |
| 158 | spin_lock(&mx3_cam->lock); |
| 159 | if (mx3_cam->active) { |
Guennadi Liakhovetski | 379fa5d | 2011-02-21 07:14:01 -0300 | [diff] [blame] | 160 | struct vb2_buffer *vb = &mx3_cam->active->vb; |
| 161 | struct mx3_camera_buffer *buf = to_mx3_vb(vb); |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 162 | |
Guennadi Liakhovetski | 379fa5d | 2011-02-21 07:14:01 -0300 | [diff] [blame] | 163 | list_del_init(&buf->queue); |
| 164 | do_gettimeofday(&vb->v4l2_buf.timestamp); |
| 165 | vb->v4l2_buf.field = mx3_cam->field; |
| 166 | vb->v4l2_buf.sequence = mx3_cam->sequence++; |
| 167 | vb2_buffer_done(vb, VB2_BUF_STATE_DONE); |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 168 | } |
| 169 | |
| 170 | if (list_empty(&mx3_cam->capture)) { |
| 171 | mx3_cam->active = NULL; |
| 172 | spin_unlock(&mx3_cam->lock); |
| 173 | |
| 174 | /* |
| 175 | * stop capture - without further buffers IPU_CHA_BUF0_RDY will |
| 176 | * not get updated |
| 177 | */ |
| 178 | return; |
| 179 | } |
| 180 | |
| 181 | mx3_cam->active = list_entry(mx3_cam->capture.next, |
Guennadi Liakhovetski | 379fa5d | 2011-02-21 07:14:01 -0300 | [diff] [blame] | 182 | struct mx3_camera_buffer, queue); |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 183 | spin_unlock(&mx3_cam->lock); |
| 184 | } |
| 185 | |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 186 | /* |
| 187 | * Videobuf operations |
| 188 | */ |
| 189 | |
| 190 | /* |
| 191 | * Calculate the __buffer__ (not data) size and number of buffers. |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 192 | */ |
Guennadi Liakhovetski | 379fa5d | 2011-02-21 07:14:01 -0300 | [diff] [blame] | 193 | static int mx3_videobuf_setup(struct vb2_queue *vq, |
| 194 | unsigned int *count, unsigned int *num_planes, |
| 195 | unsigned long sizes[], void *alloc_ctxs[]) |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 196 | { |
Guennadi Liakhovetski | 379fa5d | 2011-02-21 07:14:01 -0300 | [diff] [blame] | 197 | struct soc_camera_device *icd = soc_camera_from_vb2q(vq); |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 198 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); |
| 199 | struct mx3_camera_dev *mx3_cam = ici->priv; |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 200 | int bytes_per_line = soc_mbus_bytes_per_line(icd->user_width, |
| 201 | icd->current_fmt->host_fmt); |
| 202 | |
| 203 | if (bytes_per_line < 0) |
| 204 | return bytes_per_line; |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 205 | |
| 206 | if (!mx3_cam->idmac_channel[0]) |
| 207 | return -EINVAL; |
| 208 | |
Guennadi Liakhovetski | 379fa5d | 2011-02-21 07:14:01 -0300 | [diff] [blame] | 209 | *num_planes = 1; |
| 210 | |
| 211 | mx3_cam->sequence = 0; |
| 212 | sizes[0] = bytes_per_line * icd->user_height; |
| 213 | alloc_ctxs[0] = mx3_cam->alloc_ctx; |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 214 | |
| 215 | if (!*count) |
| 216 | *count = 32; |
| 217 | |
Guennadi Liakhovetski | 379fa5d | 2011-02-21 07:14:01 -0300 | [diff] [blame] | 218 | if (sizes[0] * *count > MAX_VIDEO_MEM * 1024 * 1024) |
| 219 | *count = MAX_VIDEO_MEM * 1024 * 1024 / sizes[0]; |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 220 | |
| 221 | return 0; |
| 222 | } |
| 223 | |
Guennadi Liakhovetski | 379fa5d | 2011-02-21 07:14:01 -0300 | [diff] [blame] | 224 | static int mx3_videobuf_prepare(struct vb2_buffer *vb) |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 225 | { |
Guennadi Liakhovetski | 379fa5d | 2011-02-21 07:14:01 -0300 | [diff] [blame] | 226 | struct soc_camera_device *icd = soc_camera_from_vb2q(vb->vb2_queue); |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 227 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); |
| 228 | struct mx3_camera_dev *mx3_cam = ici->priv; |
Guennadi Liakhovetski | 379fa5d | 2011-02-21 07:14:01 -0300 | [diff] [blame] | 229 | struct idmac_channel *ichan = mx3_cam->idmac_channel[0]; |
| 230 | struct scatterlist *sg; |
| 231 | struct mx3_camera_buffer *buf; |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 232 | size_t new_size; |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 233 | int bytes_per_line = soc_mbus_bytes_per_line(icd->user_width, |
| 234 | icd->current_fmt->host_fmt); |
| 235 | |
| 236 | if (bytes_per_line < 0) |
| 237 | return bytes_per_line; |
| 238 | |
Guennadi Liakhovetski | 379fa5d | 2011-02-21 07:14:01 -0300 | [diff] [blame] | 239 | buf = to_mx3_vb(vb); |
| 240 | sg = &buf->sg; |
| 241 | |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 242 | new_size = bytes_per_line * icd->user_height; |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 243 | |
Guennadi Liakhovetski | 379fa5d | 2011-02-21 07:14:01 -0300 | [diff] [blame] | 244 | if (vb2_plane_size(vb, 0) < new_size) { |
| 245 | dev_err(icd->dev.parent, "Buffer too small (%lu < %zu)\n", |
| 246 | vb2_plane_size(vb, 0), new_size); |
| 247 | return -ENOBUFS; |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 248 | } |
| 249 | |
Guennadi Liakhovetski | 379fa5d | 2011-02-21 07:14:01 -0300 | [diff] [blame] | 250 | if (buf->state == CSI_BUF_NEEDS_INIT) { |
| 251 | sg_dma_address(sg) = vb2_dma_contig_plane_paddr(vb, 0); |
| 252 | sg_dma_len(sg) = new_size; |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 253 | |
| 254 | buf->txd = ichan->dma_chan.device->device_prep_slave_sg( |
| 255 | &ichan->dma_chan, sg, 1, DMA_FROM_DEVICE, |
| 256 | DMA_PREP_INTERRUPT); |
Guennadi Liakhovetski | 379fa5d | 2011-02-21 07:14:01 -0300 | [diff] [blame] | 257 | if (!buf->txd) |
| 258 | return -EIO; |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 259 | |
| 260 | buf->txd->callback_param = buf->txd; |
| 261 | buf->txd->callback = mx3_cam_dma_done; |
| 262 | |
Guennadi Liakhovetski | 379fa5d | 2011-02-21 07:14:01 -0300 | [diff] [blame] | 263 | buf->state = CSI_BUF_PREPARED; |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 264 | } |
| 265 | |
Guennadi Liakhovetski | 379fa5d | 2011-02-21 07:14:01 -0300 | [diff] [blame] | 266 | vb2_set_plane_payload(vb, 0, new_size); |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 267 | |
Guennadi Liakhovetski | 379fa5d | 2011-02-21 07:14:01 -0300 | [diff] [blame] | 268 | return 0; |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 269 | } |
| 270 | |
| 271 | static enum pixel_fmt fourcc_to_ipu_pix(__u32 fourcc) |
| 272 | { |
| 273 | /* Add more formats as need arises and test possibilities appear... */ |
| 274 | switch (fourcc) { |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 275 | case V4L2_PIX_FMT_RGB24: |
| 276 | return IPU_PIX_FMT_RGB24; |
Alberto Panizzo | a48be1d | 2011-01-17 06:52:10 -0300 | [diff] [blame] | 277 | case V4L2_PIX_FMT_UYVY: |
| 278 | case V4L2_PIX_FMT_RGB565: |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 279 | default: |
| 280 | return IPU_PIX_FMT_GENERIC; |
| 281 | } |
| 282 | } |
| 283 | |
Guennadi Liakhovetski | 379fa5d | 2011-02-21 07:14:01 -0300 | [diff] [blame] | 284 | static void mx3_videobuf_queue(struct vb2_buffer *vb) |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 285 | { |
Guennadi Liakhovetski | 379fa5d | 2011-02-21 07:14:01 -0300 | [diff] [blame] | 286 | struct soc_camera_device *icd = soc_camera_from_vb2q(vb->vb2_queue); |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 287 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); |
| 288 | struct mx3_camera_dev *mx3_cam = ici->priv; |
Guennadi Liakhovetski | 379fa5d | 2011-02-21 07:14:01 -0300 | [diff] [blame] | 289 | struct mx3_camera_buffer *buf = to_mx3_vb(vb); |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 290 | struct dma_async_tx_descriptor *txd = buf->txd; |
| 291 | struct idmac_channel *ichan = to_idmac_chan(txd->chan); |
| 292 | struct idmac_video_param *video = &ichan->params.video; |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 293 | dma_cookie_t cookie; |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 294 | u32 fourcc = icd->current_fmt->host_fmt->fourcc; |
Guennadi Liakhovetski | 379fa5d | 2011-02-21 07:14:01 -0300 | [diff] [blame] | 295 | unsigned long flags; |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 296 | |
| 297 | /* This is the configuration of one sg-element */ |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 298 | video->out_pixel_fmt = fourcc_to_ipu_pix(fourcc); |
Alberto Panizzo | a48be1d | 2011-01-17 06:52:10 -0300 | [diff] [blame] | 299 | |
| 300 | if (video->out_pixel_fmt == IPU_PIX_FMT_GENERIC) { |
| 301 | /* |
| 302 | * If the IPU DMA channel is configured to transport |
| 303 | * generic 8-bit data, we have to set up correctly the |
| 304 | * geometry parameters upon the current pixel format. |
| 305 | * So, since the DMA horizontal parameters are expressed |
| 306 | * in bytes not pixels, convert these in the right unit. |
| 307 | */ |
| 308 | int bytes_per_line = soc_mbus_bytes_per_line(icd->user_width, |
| 309 | icd->current_fmt->host_fmt); |
| 310 | BUG_ON(bytes_per_line <= 0); |
| 311 | |
| 312 | video->out_width = bytes_per_line; |
| 313 | video->out_height = icd->user_height; |
| 314 | video->out_stride = bytes_per_line; |
| 315 | } else { |
| 316 | /* |
| 317 | * For IPU known formats the pixel unit will be managed |
| 318 | * successfully by the IPU code |
| 319 | */ |
| 320 | video->out_width = icd->user_width; |
| 321 | video->out_height = icd->user_height; |
| 322 | video->out_stride = icd->user_width; |
| 323 | } |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 324 | |
| 325 | #ifdef DEBUG |
| 326 | /* helps to see what DMA actually has written */ |
Guennadi Liakhovetski | 379fa5d | 2011-02-21 07:14:01 -0300 | [diff] [blame] | 327 | if (vb2_plane_vaddr(vb, 0)) |
| 328 | memset(vb2_plane_vaddr(vb, 0), 0xaa, vb2_get_plane_payload(vb, 0)); |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 329 | #endif |
| 330 | |
Guennadi Liakhovetski | 379fa5d | 2011-02-21 07:14:01 -0300 | [diff] [blame] | 331 | spin_lock_irqsave(&mx3_cam->lock, flags); |
| 332 | list_add_tail(&buf->queue, &mx3_cam->capture); |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 333 | |
Guennadi Liakhovetski | 379fa5d | 2011-02-21 07:14:01 -0300 | [diff] [blame] | 334 | if (!mx3_cam->active) |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 335 | mx3_cam->active = buf; |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 336 | |
Guennadi Liakhovetski | 2dd54a5 | 2009-08-05 20:06:31 -0300 | [diff] [blame] | 337 | spin_unlock_irq(&mx3_cam->lock); |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 338 | |
| 339 | cookie = txd->tx_submit(txd); |
Guennadi Liakhovetski | 0166b74 | 2009-08-25 11:47:00 -0300 | [diff] [blame] | 340 | dev_dbg(icd->dev.parent, "Submitted cookie %d DMA 0x%08x\n", |
| 341 | cookie, sg_dma_address(&buf->sg)); |
Guennadi Liakhovetski | 2dd54a5 | 2009-08-05 20:06:31 -0300 | [diff] [blame] | 342 | |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 343 | if (cookie >= 0) |
| 344 | return; |
| 345 | |
Guennadi Liakhovetski | 379fa5d | 2011-02-21 07:14:01 -0300 | [diff] [blame] | 346 | spin_lock_irq(&mx3_cam->lock); |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 347 | |
Guennadi Liakhovetski | 379fa5d | 2011-02-21 07:14:01 -0300 | [diff] [blame] | 348 | /* Submit error */ |
| 349 | list_del_init(&buf->queue); |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 350 | |
| 351 | if (mx3_cam->active == buf) |
| 352 | mx3_cam->active = NULL; |
Guennadi Liakhovetski | 379fa5d | 2011-02-21 07:14:01 -0300 | [diff] [blame] | 353 | |
| 354 | spin_unlock_irqrestore(&mx3_cam->lock, flags); |
| 355 | vb2_buffer_done(vb, VB2_BUF_STATE_ERROR); |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 356 | } |
| 357 | |
Guennadi Liakhovetski | 379fa5d | 2011-02-21 07:14:01 -0300 | [diff] [blame] | 358 | static void mx3_videobuf_release(struct vb2_buffer *vb) |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 359 | { |
Guennadi Liakhovetski | 379fa5d | 2011-02-21 07:14:01 -0300 | [diff] [blame] | 360 | struct soc_camera_device *icd = soc_camera_from_vb2q(vb->vb2_queue); |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 361 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); |
| 362 | struct mx3_camera_dev *mx3_cam = ici->priv; |
Guennadi Liakhovetski | 379fa5d | 2011-02-21 07:14:01 -0300 | [diff] [blame] | 363 | struct mx3_camera_buffer *buf = to_mx3_vb(vb); |
| 364 | struct dma_async_tx_descriptor *txd = buf->txd; |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 365 | unsigned long flags; |
| 366 | |
Guennadi Liakhovetski | 0166b74 | 2009-08-25 11:47:00 -0300 | [diff] [blame] | 367 | dev_dbg(icd->dev.parent, |
Guennadi Liakhovetski | 379fa5d | 2011-02-21 07:14:01 -0300 | [diff] [blame] | 368 | "Release%s DMA 0x%08x, queue %sempty\n", |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 369 | mx3_cam->active == buf ? " active" : "", sg_dma_address(&buf->sg), |
Guennadi Liakhovetski | 379fa5d | 2011-02-21 07:14:01 -0300 | [diff] [blame] | 370 | list_empty(&buf->queue) ? "" : "not "); |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 371 | |
Guennadi Liakhovetski | 379fa5d | 2011-02-21 07:14:01 -0300 | [diff] [blame] | 372 | spin_lock_irqsave(&mx3_cam->lock, flags); |
| 373 | |
| 374 | if (mx3_cam->active == buf) |
| 375 | mx3_cam->active = NULL; |
| 376 | |
| 377 | /* Doesn't hurt also if the list is empty */ |
| 378 | list_del_init(&buf->queue); |
| 379 | buf->state = CSI_BUF_NEEDS_INIT; |
| 380 | |
| 381 | if (txd) { |
| 382 | buf->txd = NULL; |
| 383 | if (mx3_cam->idmac_channel[0]) |
| 384 | async_tx_ack(txd); |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 385 | } |
Guennadi Liakhovetski | 379fa5d | 2011-02-21 07:14:01 -0300 | [diff] [blame] | 386 | |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 387 | spin_unlock_irqrestore(&mx3_cam->lock, flags); |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 388 | } |
| 389 | |
Guennadi Liakhovetski | 379fa5d | 2011-02-21 07:14:01 -0300 | [diff] [blame] | 390 | static int mx3_videobuf_init(struct vb2_buffer *vb) |
| 391 | { |
| 392 | struct mx3_camera_buffer *buf = to_mx3_vb(vb); |
| 393 | /* This is for locking debugging only */ |
| 394 | INIT_LIST_HEAD(&buf->queue); |
| 395 | sg_init_table(&buf->sg, 1); |
| 396 | |
| 397 | buf->state = CSI_BUF_NEEDS_INIT; |
| 398 | buf->txd = NULL; |
| 399 | |
| 400 | return 0; |
| 401 | } |
| 402 | |
| 403 | static struct vb2_ops mx3_videobuf_ops = { |
| 404 | .queue_setup = mx3_videobuf_setup, |
| 405 | .buf_prepare = mx3_videobuf_prepare, |
| 406 | .buf_queue = mx3_videobuf_queue, |
| 407 | .buf_cleanup = mx3_videobuf_release, |
| 408 | .buf_init = mx3_videobuf_init, |
| 409 | .wait_prepare = soc_camera_unlock, |
| 410 | .wait_finish = soc_camera_lock, |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 411 | }; |
| 412 | |
Guennadi Liakhovetski | 379fa5d | 2011-02-21 07:14:01 -0300 | [diff] [blame] | 413 | static int mx3_camera_init_videobuf(struct vb2_queue *q, |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 414 | struct soc_camera_device *icd) |
| 415 | { |
Guennadi Liakhovetski | 379fa5d | 2011-02-21 07:14:01 -0300 | [diff] [blame] | 416 | q->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; |
| 417 | q->io_modes = VB2_MMAP | VB2_USERPTR; |
| 418 | q->drv_priv = icd; |
| 419 | q->ops = &mx3_videobuf_ops; |
| 420 | q->mem_ops = &vb2_dma_contig_memops; |
| 421 | q->buf_struct_size = sizeof(struct mx3_camera_buffer); |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 422 | |
Guennadi Liakhovetski | 379fa5d | 2011-02-21 07:14:01 -0300 | [diff] [blame] | 423 | return vb2_queue_init(q); |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 424 | } |
| 425 | |
| 426 | /* First part of ipu_csi_init_interface() */ |
| 427 | static void mx3_camera_activate(struct mx3_camera_dev *mx3_cam, |
| 428 | struct soc_camera_device *icd) |
| 429 | { |
| 430 | u32 conf; |
| 431 | long rate; |
| 432 | |
| 433 | /* Set default size: ipu_csi_set_window_size() */ |
| 434 | csi_reg_write(mx3_cam, (640 - 1) | ((480 - 1) << 16), CSI_ACT_FRM_SIZE); |
| 435 | /* ...and position to 0:0: ipu_csi_set_window_pos() */ |
| 436 | conf = csi_reg_read(mx3_cam, CSI_OUT_FRM_CTRL) & 0xffff0000; |
| 437 | csi_reg_write(mx3_cam, conf, CSI_OUT_FRM_CTRL); |
| 438 | |
| 439 | /* We use only gated clock synchronisation mode so far */ |
| 440 | conf = 0 << CSI_SENS_CONF_SENS_PRTCL_SHIFT; |
| 441 | |
| 442 | /* Set generic data, platform-biggest bus-width */ |
| 443 | conf |= CSI_SENS_CONF_DATA_FMT_BAYER; |
| 444 | |
| 445 | if (mx3_cam->platform_flags & MX3_CAMERA_DATAWIDTH_15) |
| 446 | conf |= 3 << CSI_SENS_CONF_DATA_WIDTH_SHIFT; |
| 447 | else if (mx3_cam->platform_flags & MX3_CAMERA_DATAWIDTH_10) |
| 448 | conf |= 2 << CSI_SENS_CONF_DATA_WIDTH_SHIFT; |
| 449 | else if (mx3_cam->platform_flags & MX3_CAMERA_DATAWIDTH_8) |
| 450 | conf |= 1 << CSI_SENS_CONF_DATA_WIDTH_SHIFT; |
| 451 | else/* if (mx3_cam->platform_flags & MX3_CAMERA_DATAWIDTH_4)*/ |
| 452 | conf |= 0 << CSI_SENS_CONF_DATA_WIDTH_SHIFT; |
| 453 | |
| 454 | if (mx3_cam->platform_flags & MX3_CAMERA_CLK_SRC) |
| 455 | conf |= 1 << CSI_SENS_CONF_SENS_CLKSRC_SHIFT; |
| 456 | if (mx3_cam->platform_flags & MX3_CAMERA_EXT_VSYNC) |
| 457 | conf |= 1 << CSI_SENS_CONF_EXT_VSYNC_SHIFT; |
| 458 | if (mx3_cam->platform_flags & MX3_CAMERA_DP) |
| 459 | conf |= 1 << CSI_SENS_CONF_DATA_POL_SHIFT; |
| 460 | if (mx3_cam->platform_flags & MX3_CAMERA_PCP) |
| 461 | conf |= 1 << CSI_SENS_CONF_PIX_CLK_POL_SHIFT; |
| 462 | if (mx3_cam->platform_flags & MX3_CAMERA_HSP) |
| 463 | conf |= 1 << CSI_SENS_CONF_HSYNC_POL_SHIFT; |
| 464 | if (mx3_cam->platform_flags & MX3_CAMERA_VSP) |
| 465 | conf |= 1 << CSI_SENS_CONF_VSYNC_POL_SHIFT; |
| 466 | |
| 467 | /* ipu_csi_init_interface() */ |
| 468 | csi_reg_write(mx3_cam, conf, CSI_SENS_CONF); |
| 469 | |
| 470 | clk_enable(mx3_cam->clk); |
| 471 | rate = clk_round_rate(mx3_cam->clk, mx3_cam->mclk); |
Guennadi Liakhovetski | 0166b74 | 2009-08-25 11:47:00 -0300 | [diff] [blame] | 472 | dev_dbg(icd->dev.parent, "Set SENS_CONF to %x, rate %ld\n", conf, rate); |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 473 | if (rate) |
| 474 | clk_set_rate(mx3_cam->clk, rate); |
| 475 | } |
| 476 | |
| 477 | /* Called with .video_lock held */ |
| 478 | static int mx3_camera_add_device(struct soc_camera_device *icd) |
| 479 | { |
| 480 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); |
| 481 | struct mx3_camera_dev *mx3_cam = ici->priv; |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 482 | |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 483 | if (mx3_cam->icd) |
| 484 | return -EBUSY; |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 485 | |
| 486 | mx3_camera_activate(mx3_cam, icd); |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 487 | |
| 488 | mx3_cam->icd = icd; |
| 489 | |
Guennadi Liakhovetski | 0166b74 | 2009-08-25 11:47:00 -0300 | [diff] [blame] | 490 | dev_info(icd->dev.parent, "MX3 Camera driver attached to camera %d\n", |
Guennadi Liakhovetski | 40e2e09 | 2009-08-25 11:28:22 -0300 | [diff] [blame] | 491 | icd->devnum); |
| 492 | |
| 493 | return 0; |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 494 | } |
| 495 | |
| 496 | /* Called with .video_lock held */ |
| 497 | static void mx3_camera_remove_device(struct soc_camera_device *icd) |
| 498 | { |
| 499 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); |
| 500 | struct mx3_camera_dev *mx3_cam = ici->priv; |
| 501 | struct idmac_channel **ichan = &mx3_cam->idmac_channel[0]; |
| 502 | |
| 503 | BUG_ON(icd != mx3_cam->icd); |
| 504 | |
| 505 | if (*ichan) { |
| 506 | dma_release_channel(&(*ichan)->dma_chan); |
| 507 | *ichan = NULL; |
| 508 | } |
| 509 | |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 510 | clk_disable(mx3_cam->clk); |
| 511 | |
| 512 | mx3_cam->icd = NULL; |
| 513 | |
Guennadi Liakhovetski | 0166b74 | 2009-08-25 11:47:00 -0300 | [diff] [blame] | 514 | dev_info(icd->dev.parent, "MX3 Camera driver detached from camera %d\n", |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 515 | icd->devnum); |
| 516 | } |
| 517 | |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 518 | static int test_platform_param(struct mx3_camera_dev *mx3_cam, |
| 519 | unsigned char buswidth, unsigned long *flags) |
| 520 | { |
| 521 | /* |
| 522 | * Platform specified synchronization and pixel clock polarities are |
| 523 | * only a recommendation and are only used during probing. MX3x |
| 524 | * camera interface only works in master mode, i.e., uses HSYNC and |
| 525 | * VSYNC signals from the sensor |
| 526 | */ |
| 527 | *flags = SOCAM_MASTER | |
| 528 | SOCAM_HSYNC_ACTIVE_HIGH | |
| 529 | SOCAM_HSYNC_ACTIVE_LOW | |
| 530 | SOCAM_VSYNC_ACTIVE_HIGH | |
| 531 | SOCAM_VSYNC_ACTIVE_LOW | |
| 532 | SOCAM_PCLK_SAMPLE_RISING | |
| 533 | SOCAM_PCLK_SAMPLE_FALLING | |
| 534 | SOCAM_DATA_ACTIVE_HIGH | |
| 535 | SOCAM_DATA_ACTIVE_LOW; |
| 536 | |
Guennadi Liakhovetski | 5d28d52 | 2009-12-11 11:15:05 -0300 | [diff] [blame] | 537 | /* |
| 538 | * If requested data width is supported by the platform, use it or any |
| 539 | * possible lower value - i.MX31 is smart enough to schift bits |
| 540 | */ |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 541 | if (mx3_cam->platform_flags & MX3_CAMERA_DATAWIDTH_15) |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 542 | *flags |= SOCAM_DATAWIDTH_15 | SOCAM_DATAWIDTH_10 | |
| 543 | SOCAM_DATAWIDTH_8 | SOCAM_DATAWIDTH_4; |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 544 | else if (mx3_cam->platform_flags & MX3_CAMERA_DATAWIDTH_10) |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 545 | *flags |= SOCAM_DATAWIDTH_10 | SOCAM_DATAWIDTH_8 | |
| 546 | SOCAM_DATAWIDTH_4; |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 547 | else if (mx3_cam->platform_flags & MX3_CAMERA_DATAWIDTH_8) |
| 548 | *flags |= SOCAM_DATAWIDTH_8 | SOCAM_DATAWIDTH_4; |
| 549 | else if (mx3_cam->platform_flags & MX3_CAMERA_DATAWIDTH_4) |
| 550 | *flags |= SOCAM_DATAWIDTH_4; |
| 551 | |
| 552 | switch (buswidth) { |
| 553 | case 15: |
| 554 | if (!(*flags & SOCAM_DATAWIDTH_15)) |
| 555 | return -EINVAL; |
| 556 | break; |
| 557 | case 10: |
| 558 | if (!(*flags & SOCAM_DATAWIDTH_10)) |
| 559 | return -EINVAL; |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 560 | break; |
| 561 | case 8: |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 562 | if (!(*flags & SOCAM_DATAWIDTH_8)) |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 563 | return -EINVAL; |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 564 | break; |
| 565 | case 4: |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 566 | if (!(*flags & SOCAM_DATAWIDTH_4)) |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 567 | return -EINVAL; |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 568 | break; |
| 569 | default: |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 570 | dev_warn(mx3_cam->soc_host.v4l2_dev.dev, |
| 571 | "Unsupported bus width %d\n", buswidth); |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 572 | return -EINVAL; |
| 573 | } |
| 574 | |
| 575 | return 0; |
| 576 | } |
| 577 | |
| 578 | static int mx3_camera_try_bus_param(struct soc_camera_device *icd, |
| 579 | const unsigned int depth) |
| 580 | { |
| 581 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); |
| 582 | struct mx3_camera_dev *mx3_cam = ici->priv; |
| 583 | unsigned long bus_flags, camera_flags; |
| 584 | int ret = test_platform_param(mx3_cam, depth, &bus_flags); |
| 585 | |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 586 | dev_dbg(icd->dev.parent, "request bus width %d bit: %d\n", depth, ret); |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 587 | |
| 588 | if (ret < 0) |
| 589 | return ret; |
| 590 | |
| 591 | camera_flags = icd->ops->query_bus_param(icd); |
| 592 | |
| 593 | ret = soc_camera_bus_param_compatible(camera_flags, bus_flags); |
| 594 | if (ret < 0) |
Guennadi Liakhovetski | 0166b74 | 2009-08-25 11:47:00 -0300 | [diff] [blame] | 595 | dev_warn(icd->dev.parent, |
| 596 | "Flags incompatible: camera %lx, host %lx\n", |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 597 | camera_flags, bus_flags); |
| 598 | |
| 599 | return ret; |
| 600 | } |
| 601 | |
| 602 | static bool chan_filter(struct dma_chan *chan, void *arg) |
| 603 | { |
| 604 | struct dma_chan_request *rq = arg; |
| 605 | struct mx3_camera_pdata *pdata; |
| 606 | |
Sascha Hauer | a8de663 | 2010-11-05 06:26:03 -0300 | [diff] [blame] | 607 | if (!imx_dma_is_ipu(chan)) |
| 608 | return false; |
| 609 | |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 610 | if (!rq) |
| 611 | return false; |
| 612 | |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 613 | pdata = rq->mx3_cam->soc_host.v4l2_dev.dev->platform_data; |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 614 | |
| 615 | return rq->id == chan->chan_id && |
| 616 | pdata->dma_dev == chan->device->dev; |
| 617 | } |
| 618 | |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 619 | static const struct soc_mbus_pixelfmt mx3_camera_formats[] = { |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 620 | { |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 621 | .fourcc = V4L2_PIX_FMT_SBGGR8, |
| 622 | .name = "Bayer BGGR (sRGB) 8 bit", |
| 623 | .bits_per_sample = 8, |
| 624 | .packing = SOC_MBUS_PACKING_NONE, |
| 625 | .order = SOC_MBUS_ORDER_LE, |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 626 | }, { |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 627 | .fourcc = V4L2_PIX_FMT_GREY, |
| 628 | .name = "Monochrome 8 bit", |
| 629 | .bits_per_sample = 8, |
| 630 | .packing = SOC_MBUS_PACKING_NONE, |
| 631 | .order = SOC_MBUS_ORDER_LE, |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 632 | }, |
| 633 | }; |
| 634 | |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 635 | /* This will be corrected as we get more formats */ |
| 636 | static bool mx3_camera_packing_supported(const struct soc_mbus_pixelfmt *fmt) |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 637 | { |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 638 | return fmt->packing == SOC_MBUS_PACKING_NONE || |
| 639 | (fmt->bits_per_sample == 8 && |
| 640 | fmt->packing == SOC_MBUS_PACKING_2X8_PADHI) || |
| 641 | (fmt->bits_per_sample > 8 && |
| 642 | fmt->packing == SOC_MBUS_PACKING_EXTEND16); |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 643 | } |
| 644 | |
Hans Verkuil | 3805f20 | 2010-05-08 17:55:00 -0300 | [diff] [blame] | 645 | static int mx3_camera_get_formats(struct soc_camera_device *icd, unsigned int idx, |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 646 | struct soc_camera_format_xlate *xlate) |
| 647 | { |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 648 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); |
| 649 | struct device *dev = icd->dev.parent; |
| 650 | int formats = 0, ret; |
| 651 | enum v4l2_mbus_pixelcode code; |
| 652 | const struct soc_mbus_pixelfmt *fmt; |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 653 | |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 654 | ret = v4l2_subdev_call(sd, video, enum_mbus_fmt, idx, &code); |
| 655 | if (ret < 0) |
| 656 | /* No more formats */ |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 657 | return 0; |
| 658 | |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 659 | fmt = soc_mbus_get_fmtdesc(code); |
| 660 | if (!fmt) { |
| 661 | dev_err(icd->dev.parent, |
Hans Verkuil | 3805f20 | 2010-05-08 17:55:00 -0300 | [diff] [blame] | 662 | "Invalid format code #%u: %d\n", idx, code); |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 663 | return 0; |
| 664 | } |
| 665 | |
| 666 | /* This also checks support for the requested bits-per-sample */ |
| 667 | ret = mx3_camera_try_bus_param(icd, fmt->bits_per_sample); |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 668 | if (ret < 0) |
| 669 | return 0; |
| 670 | |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 671 | switch (code) { |
| 672 | case V4L2_MBUS_FMT_SBGGR10_1X10: |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 673 | formats++; |
| 674 | if (xlate) { |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 675 | xlate->host_fmt = &mx3_camera_formats[0]; |
| 676 | xlate->code = code; |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 677 | xlate++; |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 678 | dev_dbg(dev, "Providing format %s using code %d\n", |
| 679 | mx3_camera_formats[0].name, code); |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 680 | } |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 681 | break; |
| 682 | case V4L2_MBUS_FMT_Y10_1X10: |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 683 | formats++; |
| 684 | if (xlate) { |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 685 | xlate->host_fmt = &mx3_camera_formats[1]; |
| 686 | xlate->code = code; |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 687 | xlate++; |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 688 | dev_dbg(dev, "Providing format %s using code %d\n", |
| 689 | mx3_camera_formats[1].name, code); |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 690 | } |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 691 | break; |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 692 | default: |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 693 | if (!mx3_camera_packing_supported(fmt)) |
| 694 | return 0; |
| 695 | } |
| 696 | |
| 697 | /* Generic pass-through */ |
| 698 | formats++; |
| 699 | if (xlate) { |
| 700 | xlate->host_fmt = fmt; |
| 701 | xlate->code = code; |
Alberto Panizzo | a48be1d | 2011-01-17 06:52:10 -0300 | [diff] [blame] | 702 | dev_dbg(dev, "Providing format %c%c%c%c in pass-through mode\n", |
| 703 | (fmt->fourcc >> (0*8)) & 0xFF, |
| 704 | (fmt->fourcc >> (1*8)) & 0xFF, |
| 705 | (fmt->fourcc >> (2*8)) & 0xFF, |
| 706 | (fmt->fourcc >> (3*8)) & 0xFF); |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 707 | xlate++; |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 708 | } |
| 709 | |
| 710 | return formats; |
| 711 | } |
| 712 | |
Guennadi Liakhovetski | 09e231b | 2009-03-13 06:08:20 -0300 | [diff] [blame] | 713 | static void configure_geometry(struct mx3_camera_dev *mx3_cam, |
Alberto Panizzo | a48be1d | 2011-01-17 06:52:10 -0300 | [diff] [blame] | 714 | unsigned int width, unsigned int height, |
| 715 | enum v4l2_mbus_pixelcode code) |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 716 | { |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 717 | u32 ctrl, width_field, height_field; |
Alberto Panizzo | a48be1d | 2011-01-17 06:52:10 -0300 | [diff] [blame] | 718 | const struct soc_mbus_pixelfmt *fmt; |
| 719 | |
| 720 | fmt = soc_mbus_get_fmtdesc(code); |
| 721 | BUG_ON(!fmt); |
| 722 | |
| 723 | if (fourcc_to_ipu_pix(fmt->fourcc) == IPU_PIX_FMT_GENERIC) { |
| 724 | /* |
| 725 | * As the CSI will be configured to output BAYER, here |
| 726 | * the width parameter count the number of samples to |
| 727 | * capture to complete the whole image width. |
| 728 | */ |
| 729 | width *= soc_mbus_samples_per_pixel(fmt); |
| 730 | BUG_ON(width < 0); |
| 731 | } |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 732 | |
| 733 | /* Setup frame size - this cannot be changed on-the-fly... */ |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 734 | width_field = width - 1; |
| 735 | height_field = height - 1; |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 736 | csi_reg_write(mx3_cam, width_field | (height_field << 16), CSI_SENS_FRM_SIZE); |
| 737 | |
| 738 | csi_reg_write(mx3_cam, width_field << 16, CSI_FLASH_STROBE_1); |
| 739 | csi_reg_write(mx3_cam, (height_field << 16) | 0x22, CSI_FLASH_STROBE_2); |
| 740 | |
| 741 | csi_reg_write(mx3_cam, width_field | (height_field << 16), CSI_ACT_FRM_SIZE); |
| 742 | |
| 743 | /* ...and position */ |
| 744 | ctrl = csi_reg_read(mx3_cam, CSI_OUT_FRM_CTRL) & 0xffff0000; |
| 745 | /* Sensor does the cropping */ |
| 746 | csi_reg_write(mx3_cam, ctrl | 0 | (0 << 8), CSI_OUT_FRM_CTRL); |
Guennadi Liakhovetski | 09e231b | 2009-03-13 06:08:20 -0300 | [diff] [blame] | 747 | } |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 748 | |
Guennadi Liakhovetski | 09e231b | 2009-03-13 06:08:20 -0300 | [diff] [blame] | 749 | static int acquire_dma_channel(struct mx3_camera_dev *mx3_cam) |
| 750 | { |
| 751 | dma_cap_mask_t mask; |
| 752 | struct dma_chan *chan; |
| 753 | struct idmac_channel **ichan = &mx3_cam->idmac_channel[0]; |
| 754 | /* We have to use IDMAC_IC_7 for Bayer / generic data */ |
| 755 | struct dma_chan_request rq = {.mx3_cam = mx3_cam, |
| 756 | .id = IDMAC_IC_7}; |
| 757 | |
Guennadi Liakhovetski | 09e231b | 2009-03-13 06:08:20 -0300 | [diff] [blame] | 758 | dma_cap_zero(mask); |
| 759 | dma_cap_set(DMA_SLAVE, mask); |
| 760 | dma_cap_set(DMA_PRIVATE, mask); |
| 761 | chan = dma_request_channel(mask, chan_filter, &rq); |
| 762 | if (!chan) |
| 763 | return -EBUSY; |
| 764 | |
| 765 | *ichan = to_idmac_chan(chan); |
| 766 | (*ichan)->client = mx3_cam; |
| 767 | |
| 768 | return 0; |
| 769 | } |
| 770 | |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 771 | /* |
| 772 | * FIXME: learn to use stride != width, then we can keep stride properly aligned |
| 773 | * and support arbitrary (even) widths. |
| 774 | */ |
Márton Németh | e26b314 | 2010-02-24 17:13:29 -0300 | [diff] [blame] | 775 | static inline void stride_align(__u32 *width) |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 776 | { |
| 777 | if (((*width + 7) & ~7) < 4096) |
| 778 | *width = (*width + 7) & ~7; |
| 779 | else |
| 780 | *width = *width & ~7; |
| 781 | } |
| 782 | |
| 783 | /* |
| 784 | * As long as we don't implement host-side cropping and scaling, we can use |
| 785 | * default g_crop and cropcap from soc_camera.c |
| 786 | */ |
Guennadi Liakhovetski | 09e231b | 2009-03-13 06:08:20 -0300 | [diff] [blame] | 787 | static int mx3_camera_set_crop(struct soc_camera_device *icd, |
Guennadi Liakhovetski | 08590b9 | 2009-08-25 11:46:54 -0300 | [diff] [blame] | 788 | struct v4l2_crop *a) |
Guennadi Liakhovetski | 09e231b | 2009-03-13 06:08:20 -0300 | [diff] [blame] | 789 | { |
Guennadi Liakhovetski | 08590b9 | 2009-08-25 11:46:54 -0300 | [diff] [blame] | 790 | struct v4l2_rect *rect = &a->c; |
Guennadi Liakhovetski | 09e231b | 2009-03-13 06:08:20 -0300 | [diff] [blame] | 791 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); |
| 792 | struct mx3_camera_dev *mx3_cam = ici->priv; |
Guennadi Liakhovetski | c9c1f1c | 2009-08-25 11:46:59 -0300 | [diff] [blame] | 793 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 794 | struct v4l2_mbus_framefmt mf; |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 795 | int ret; |
Guennadi Liakhovetski | 09e231b | 2009-03-13 06:08:20 -0300 | [diff] [blame] | 796 | |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 797 | soc_camera_limit_side(&rect->left, &rect->width, 0, 2, 4096); |
| 798 | soc_camera_limit_side(&rect->top, &rect->height, 0, 2, 4096); |
| 799 | |
| 800 | ret = v4l2_subdev_call(sd, video, s_crop, a); |
| 801 | if (ret < 0) |
| 802 | return ret; |
| 803 | |
| 804 | /* The capture device might have changed its output */ |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 805 | ret = v4l2_subdev_call(sd, video, g_mbus_fmt, &mf); |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 806 | if (ret < 0) |
| 807 | return ret; |
| 808 | |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 809 | if (mf.width & 7) { |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 810 | /* Ouch! We can only handle 8-byte aligned width... */ |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 811 | stride_align(&mf.width); |
| 812 | ret = v4l2_subdev_call(sd, video, s_mbus_fmt, &mf); |
Guennadi Liakhovetski | 09e231b | 2009-03-13 06:08:20 -0300 | [diff] [blame] | 813 | if (ret < 0) |
| 814 | return ret; |
| 815 | } |
| 816 | |
Guennadi Liakhovetski | 379fa5d | 2011-02-21 07:14:01 -0300 | [diff] [blame] | 817 | if (mf.width != icd->user_width || mf.height != icd->user_height) |
Alberto Panizzo | a48be1d | 2011-01-17 06:52:10 -0300 | [diff] [blame] | 818 | configure_geometry(mx3_cam, mf.width, mf.height, mf.code); |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 819 | |
| 820 | dev_dbg(icd->dev.parent, "Sensor cropped %dx%d\n", |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 821 | mf.width, mf.height); |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 822 | |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 823 | icd->user_width = mf.width; |
| 824 | icd->user_height = mf.height; |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 825 | |
| 826 | return ret; |
Guennadi Liakhovetski | 09e231b | 2009-03-13 06:08:20 -0300 | [diff] [blame] | 827 | } |
| 828 | |
| 829 | static int mx3_camera_set_fmt(struct soc_camera_device *icd, |
| 830 | struct v4l2_format *f) |
| 831 | { |
| 832 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); |
| 833 | struct mx3_camera_dev *mx3_cam = ici->priv; |
Guennadi Liakhovetski | c9c1f1c | 2009-08-25 11:46:59 -0300 | [diff] [blame] | 834 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); |
Guennadi Liakhovetski | 09e231b | 2009-03-13 06:08:20 -0300 | [diff] [blame] | 835 | const struct soc_camera_format_xlate *xlate; |
| 836 | struct v4l2_pix_format *pix = &f->fmt.pix; |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 837 | struct v4l2_mbus_framefmt mf; |
Guennadi Liakhovetski | 09e231b | 2009-03-13 06:08:20 -0300 | [diff] [blame] | 838 | int ret; |
| 839 | |
| 840 | xlate = soc_camera_xlate_by_fourcc(icd, pix->pixelformat); |
| 841 | if (!xlate) { |
Guennadi Liakhovetski | 0166b74 | 2009-08-25 11:47:00 -0300 | [diff] [blame] | 842 | dev_warn(icd->dev.parent, "Format %x not found\n", |
| 843 | pix->pixelformat); |
Guennadi Liakhovetski | 09e231b | 2009-03-13 06:08:20 -0300 | [diff] [blame] | 844 | return -EINVAL; |
| 845 | } |
| 846 | |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 847 | stride_align(&pix->width); |
| 848 | dev_dbg(icd->dev.parent, "Set format %dx%d\n", pix->width, pix->height); |
| 849 | |
Guennadi Liakhovetski | 09e231b | 2009-03-13 06:08:20 -0300 | [diff] [blame] | 850 | /* |
| 851 | * Might have to perform a complete interface initialisation like in |
| 852 | * ipu_csi_init_interface() in mxc_v4l2_s_param(). Also consider |
| 853 | * mxc_v4l2_s_fmt() |
| 854 | */ |
| 855 | |
Alberto Panizzo | a48be1d | 2011-01-17 06:52:10 -0300 | [diff] [blame] | 856 | configure_geometry(mx3_cam, pix->width, pix->height, xlate->code); |
Guennadi Liakhovetski | 09e231b | 2009-03-13 06:08:20 -0300 | [diff] [blame] | 857 | |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 858 | mf.width = pix->width; |
| 859 | mf.height = pix->height; |
| 860 | mf.field = pix->field; |
| 861 | mf.colorspace = pix->colorspace; |
| 862 | mf.code = xlate->code; |
| 863 | |
| 864 | ret = v4l2_subdev_call(sd, video, s_mbus_fmt, &mf); |
| 865 | if (ret < 0) |
| 866 | return ret; |
| 867 | |
| 868 | if (mf.code != xlate->code) |
| 869 | return -EINVAL; |
| 870 | |
Guennadi Liakhovetski | 379fa5d | 2011-02-21 07:14:01 -0300 | [diff] [blame] | 871 | if (!mx3_cam->idmac_channel[0]) { |
| 872 | ret = acquire_dma_channel(mx3_cam); |
| 873 | if (ret < 0) |
| 874 | return ret; |
| 875 | } |
| 876 | |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 877 | pix->width = mf.width; |
| 878 | pix->height = mf.height; |
| 879 | pix->field = mf.field; |
Guennadi Liakhovetski | 379fa5d | 2011-02-21 07:14:01 -0300 | [diff] [blame] | 880 | mx3_cam->field = mf.field; |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 881 | pix->colorspace = mf.colorspace; |
| 882 | icd->current_fmt = xlate; |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 883 | |
Anatolij Gustschin | 44facdc8c | 2011-01-31 09:58:01 -0300 | [diff] [blame] | 884 | pix->bytesperline = soc_mbus_bytes_per_line(pix->width, |
| 885 | xlate->host_fmt); |
| 886 | if (pix->bytesperline < 0) |
| 887 | return pix->bytesperline; |
| 888 | pix->sizeimage = pix->height * pix->bytesperline; |
| 889 | |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 890 | dev_dbg(icd->dev.parent, "Sensor set %dx%d\n", pix->width, pix->height); |
| 891 | |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 892 | return ret; |
| 893 | } |
| 894 | |
| 895 | static int mx3_camera_try_fmt(struct soc_camera_device *icd, |
| 896 | struct v4l2_format *f) |
| 897 | { |
Guennadi Liakhovetski | c9c1f1c | 2009-08-25 11:46:59 -0300 | [diff] [blame] | 898 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 899 | const struct soc_camera_format_xlate *xlate; |
| 900 | struct v4l2_pix_format *pix = &f->fmt.pix; |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 901 | struct v4l2_mbus_framefmt mf; |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 902 | __u32 pixfmt = pix->pixelformat; |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 903 | int ret; |
| 904 | |
| 905 | xlate = soc_camera_xlate_by_fourcc(icd, pixfmt); |
| 906 | if (pixfmt && !xlate) { |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 907 | dev_warn(icd->dev.parent, "Format %x not found\n", pixfmt); |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 908 | return -EINVAL; |
| 909 | } |
| 910 | |
| 911 | /* limit to MX3 hardware capabilities */ |
| 912 | if (pix->height > 4096) |
| 913 | pix->height = 4096; |
| 914 | if (pix->width > 4096) |
| 915 | pix->width = 4096; |
| 916 | |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 917 | pix->bytesperline = soc_mbus_bytes_per_line(pix->width, |
| 918 | xlate->host_fmt); |
| 919 | if (pix->bytesperline < 0) |
| 920 | return pix->bytesperline; |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 921 | pix->sizeimage = pix->height * pix->bytesperline; |
| 922 | |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 923 | /* limit to sensor capabilities */ |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 924 | mf.width = pix->width; |
| 925 | mf.height = pix->height; |
| 926 | mf.field = pix->field; |
| 927 | mf.colorspace = pix->colorspace; |
| 928 | mf.code = xlate->code; |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 929 | |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 930 | ret = v4l2_subdev_call(sd, video, try_mbus_fmt, &mf); |
| 931 | if (ret < 0) |
| 932 | return ret; |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 933 | |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 934 | pix->width = mf.width; |
| 935 | pix->height = mf.height; |
| 936 | pix->colorspace = mf.colorspace; |
| 937 | |
| 938 | switch (mf.field) { |
| 939 | case V4L2_FIELD_ANY: |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 940 | pix->field = V4L2_FIELD_NONE; |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 941 | break; |
| 942 | case V4L2_FIELD_NONE: |
| 943 | break; |
| 944 | default: |
| 945 | dev_err(icd->dev.parent, "Field type %d unsupported.\n", |
| 946 | mf.field); |
| 947 | ret = -EINVAL; |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 948 | } |
| 949 | |
| 950 | return ret; |
| 951 | } |
| 952 | |
Guennadi Liakhovetski | 57bee29 | 2010-08-17 14:29:51 -0300 | [diff] [blame] | 953 | static int mx3_camera_reqbufs(struct soc_camera_device *icd, |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 954 | struct v4l2_requestbuffers *p) |
| 955 | { |
| 956 | return 0; |
| 957 | } |
| 958 | |
| 959 | static unsigned int mx3_camera_poll(struct file *file, poll_table *pt) |
| 960 | { |
Guennadi Liakhovetski | 57bee29 | 2010-08-17 14:29:51 -0300 | [diff] [blame] | 961 | struct soc_camera_device *icd = file->private_data; |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 962 | |
Guennadi Liakhovetski | 379fa5d | 2011-02-21 07:14:01 -0300 | [diff] [blame] | 963 | return vb2_poll(&icd->vb2_vidq, file, pt); |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 964 | } |
| 965 | |
| 966 | static int mx3_camera_querycap(struct soc_camera_host *ici, |
| 967 | struct v4l2_capability *cap) |
| 968 | { |
| 969 | /* cap->name is set by the firendly caller:-> */ |
| 970 | strlcpy(cap->card, "i.MX3x Camera", sizeof(cap->card)); |
| 971 | cap->version = KERNEL_VERSION(0, 2, 2); |
| 972 | cap->capabilities = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING; |
| 973 | |
| 974 | return 0; |
| 975 | } |
| 976 | |
| 977 | static int mx3_camera_set_bus_param(struct soc_camera_device *icd, __u32 pixfmt) |
| 978 | { |
| 979 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); |
| 980 | struct mx3_camera_dev *mx3_cam = ici->priv; |
| 981 | unsigned long bus_flags, camera_flags, common_flags; |
| 982 | u32 dw, sens_conf; |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 983 | const struct soc_mbus_pixelfmt *fmt; |
| 984 | int buswidth; |
| 985 | int ret; |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 986 | const struct soc_camera_format_xlate *xlate; |
Guennadi Liakhovetski | 0166b74 | 2009-08-25 11:47:00 -0300 | [diff] [blame] | 987 | struct device *dev = icd->dev.parent; |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 988 | |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 989 | fmt = soc_mbus_get_fmtdesc(icd->current_fmt->code); |
| 990 | if (!fmt) |
| 991 | return -EINVAL; |
| 992 | |
| 993 | buswidth = fmt->bits_per_sample; |
| 994 | ret = test_platform_param(mx3_cam, buswidth, &bus_flags); |
| 995 | |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 996 | xlate = soc_camera_xlate_by_fourcc(icd, pixfmt); |
| 997 | if (!xlate) { |
Guennadi Liakhovetski | 0166b74 | 2009-08-25 11:47:00 -0300 | [diff] [blame] | 998 | dev_warn(dev, "Format %x not found\n", pixfmt); |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 999 | return -EINVAL; |
| 1000 | } |
| 1001 | |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 1002 | dev_dbg(dev, "requested bus width %d bit: %d\n", buswidth, ret); |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 1003 | |
| 1004 | if (ret < 0) |
| 1005 | return ret; |
| 1006 | |
| 1007 | camera_flags = icd->ops->query_bus_param(icd); |
| 1008 | |
| 1009 | common_flags = soc_camera_bus_param_compatible(camera_flags, bus_flags); |
Guennadi Liakhovetski | 0166b74 | 2009-08-25 11:47:00 -0300 | [diff] [blame] | 1010 | dev_dbg(dev, "Flags cam: 0x%lx host: 0x%lx common: 0x%lx\n", |
Guennadi Liakhovetski | 40e2e09 | 2009-08-25 11:28:22 -0300 | [diff] [blame] | 1011 | camera_flags, bus_flags, common_flags); |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 1012 | if (!common_flags) { |
Guennadi Liakhovetski | 0166b74 | 2009-08-25 11:47:00 -0300 | [diff] [blame] | 1013 | dev_dbg(dev, "no common flags"); |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 1014 | return -EINVAL; |
| 1015 | } |
| 1016 | |
| 1017 | /* Make choices, based on platform preferences */ |
| 1018 | if ((common_flags & SOCAM_HSYNC_ACTIVE_HIGH) && |
| 1019 | (common_flags & SOCAM_HSYNC_ACTIVE_LOW)) { |
| 1020 | if (mx3_cam->platform_flags & MX3_CAMERA_HSP) |
| 1021 | common_flags &= ~SOCAM_HSYNC_ACTIVE_HIGH; |
| 1022 | else |
| 1023 | common_flags &= ~SOCAM_HSYNC_ACTIVE_LOW; |
| 1024 | } |
| 1025 | |
| 1026 | if ((common_flags & SOCAM_VSYNC_ACTIVE_HIGH) && |
| 1027 | (common_flags & SOCAM_VSYNC_ACTIVE_LOW)) { |
| 1028 | if (mx3_cam->platform_flags & MX3_CAMERA_VSP) |
| 1029 | common_flags &= ~SOCAM_VSYNC_ACTIVE_HIGH; |
| 1030 | else |
| 1031 | common_flags &= ~SOCAM_VSYNC_ACTIVE_LOW; |
| 1032 | } |
| 1033 | |
| 1034 | if ((common_flags & SOCAM_DATA_ACTIVE_HIGH) && |
| 1035 | (common_flags & SOCAM_DATA_ACTIVE_LOW)) { |
| 1036 | if (mx3_cam->platform_flags & MX3_CAMERA_DP) |
| 1037 | common_flags &= ~SOCAM_DATA_ACTIVE_HIGH; |
| 1038 | else |
| 1039 | common_flags &= ~SOCAM_DATA_ACTIVE_LOW; |
| 1040 | } |
| 1041 | |
| 1042 | if ((common_flags & SOCAM_PCLK_SAMPLE_RISING) && |
| 1043 | (common_flags & SOCAM_PCLK_SAMPLE_FALLING)) { |
| 1044 | if (mx3_cam->platform_flags & MX3_CAMERA_PCP) |
| 1045 | common_flags &= ~SOCAM_PCLK_SAMPLE_RISING; |
| 1046 | else |
| 1047 | common_flags &= ~SOCAM_PCLK_SAMPLE_FALLING; |
| 1048 | } |
| 1049 | |
Guennadi Liakhovetski | 5d28d52 | 2009-12-11 11:15:05 -0300 | [diff] [blame] | 1050 | /* |
| 1051 | * Make the camera work in widest common mode, we'll take care of |
| 1052 | * the rest |
| 1053 | */ |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 1054 | if (common_flags & SOCAM_DATAWIDTH_15) |
| 1055 | common_flags = (common_flags & ~SOCAM_DATAWIDTH_MASK) | |
| 1056 | SOCAM_DATAWIDTH_15; |
| 1057 | else if (common_flags & SOCAM_DATAWIDTH_10) |
| 1058 | common_flags = (common_flags & ~SOCAM_DATAWIDTH_MASK) | |
| 1059 | SOCAM_DATAWIDTH_10; |
| 1060 | else if (common_flags & SOCAM_DATAWIDTH_8) |
| 1061 | common_flags = (common_flags & ~SOCAM_DATAWIDTH_MASK) | |
| 1062 | SOCAM_DATAWIDTH_8; |
| 1063 | else |
| 1064 | common_flags = (common_flags & ~SOCAM_DATAWIDTH_MASK) | |
| 1065 | SOCAM_DATAWIDTH_4; |
| 1066 | |
| 1067 | ret = icd->ops->set_bus_param(icd, common_flags); |
Guennadi Liakhovetski | 40e2e09 | 2009-08-25 11:28:22 -0300 | [diff] [blame] | 1068 | if (ret < 0) { |
Guennadi Liakhovetski | 0166b74 | 2009-08-25 11:47:00 -0300 | [diff] [blame] | 1069 | dev_dbg(dev, "camera set_bus_param(%lx) returned %d\n", |
Guennadi Liakhovetski | 40e2e09 | 2009-08-25 11:28:22 -0300 | [diff] [blame] | 1070 | common_flags, ret); |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 1071 | return ret; |
Guennadi Liakhovetski | 40e2e09 | 2009-08-25 11:28:22 -0300 | [diff] [blame] | 1072 | } |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 1073 | |
| 1074 | /* |
| 1075 | * So far only gated clock mode is supported. Add a line |
| 1076 | * (3 << CSI_SENS_CONF_SENS_PRTCL_SHIFT) | |
| 1077 | * below and select the required mode when supporting other |
| 1078 | * synchronisation protocols. |
| 1079 | */ |
| 1080 | sens_conf = csi_reg_read(mx3_cam, CSI_SENS_CONF) & |
| 1081 | ~((1 << CSI_SENS_CONF_VSYNC_POL_SHIFT) | |
| 1082 | (1 << CSI_SENS_CONF_HSYNC_POL_SHIFT) | |
| 1083 | (1 << CSI_SENS_CONF_DATA_POL_SHIFT) | |
| 1084 | (1 << CSI_SENS_CONF_PIX_CLK_POL_SHIFT) | |
| 1085 | (3 << CSI_SENS_CONF_DATA_FMT_SHIFT) | |
| 1086 | (3 << CSI_SENS_CONF_DATA_WIDTH_SHIFT)); |
| 1087 | |
| 1088 | /* TODO: Support RGB and YUV formats */ |
| 1089 | |
| 1090 | /* This has been set in mx3_camera_activate(), but we clear it above */ |
| 1091 | sens_conf |= CSI_SENS_CONF_DATA_FMT_BAYER; |
| 1092 | |
| 1093 | if (common_flags & SOCAM_PCLK_SAMPLE_FALLING) |
| 1094 | sens_conf |= 1 << CSI_SENS_CONF_PIX_CLK_POL_SHIFT; |
| 1095 | if (common_flags & SOCAM_HSYNC_ACTIVE_LOW) |
| 1096 | sens_conf |= 1 << CSI_SENS_CONF_HSYNC_POL_SHIFT; |
| 1097 | if (common_flags & SOCAM_VSYNC_ACTIVE_LOW) |
| 1098 | sens_conf |= 1 << CSI_SENS_CONF_VSYNC_POL_SHIFT; |
| 1099 | if (common_flags & SOCAM_DATA_ACTIVE_LOW) |
| 1100 | sens_conf |= 1 << CSI_SENS_CONF_DATA_POL_SHIFT; |
| 1101 | |
| 1102 | /* Just do what we're asked to do */ |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 1103 | switch (xlate->host_fmt->bits_per_sample) { |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 1104 | case 4: |
| 1105 | dw = 0 << CSI_SENS_CONF_DATA_WIDTH_SHIFT; |
| 1106 | break; |
| 1107 | case 8: |
| 1108 | dw = 1 << CSI_SENS_CONF_DATA_WIDTH_SHIFT; |
| 1109 | break; |
| 1110 | case 10: |
| 1111 | dw = 2 << CSI_SENS_CONF_DATA_WIDTH_SHIFT; |
| 1112 | break; |
| 1113 | default: |
| 1114 | /* |
| 1115 | * Actually it can only be 15 now, default is just to silence |
| 1116 | * compiler warnings |
| 1117 | */ |
| 1118 | case 15: |
| 1119 | dw = 3 << CSI_SENS_CONF_DATA_WIDTH_SHIFT; |
| 1120 | } |
| 1121 | |
| 1122 | csi_reg_write(mx3_cam, sens_conf | dw, CSI_SENS_CONF); |
| 1123 | |
Guennadi Liakhovetski | 0166b74 | 2009-08-25 11:47:00 -0300 | [diff] [blame] | 1124 | dev_dbg(dev, "Set SENS_CONF to %x\n", sens_conf | dw); |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 1125 | |
| 1126 | return 0; |
| 1127 | } |
| 1128 | |
| 1129 | static struct soc_camera_host_ops mx3_soc_camera_host_ops = { |
| 1130 | .owner = THIS_MODULE, |
| 1131 | .add = mx3_camera_add_device, |
| 1132 | .remove = mx3_camera_remove_device, |
Guennadi Liakhovetski | 09e231b | 2009-03-13 06:08:20 -0300 | [diff] [blame] | 1133 | .set_crop = mx3_camera_set_crop, |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 1134 | .set_fmt = mx3_camera_set_fmt, |
| 1135 | .try_fmt = mx3_camera_try_fmt, |
| 1136 | .get_formats = mx3_camera_get_formats, |
Guennadi Liakhovetski | 379fa5d | 2011-02-21 07:14:01 -0300 | [diff] [blame] | 1137 | .init_videobuf2 = mx3_camera_init_videobuf, |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 1138 | .reqbufs = mx3_camera_reqbufs, |
| 1139 | .poll = mx3_camera_poll, |
| 1140 | .querycap = mx3_camera_querycap, |
| 1141 | .set_bus_param = mx3_camera_set_bus_param, |
| 1142 | }; |
| 1143 | |
Jean Delvare | e36bc31 | 2009-06-04 11:07:16 -0300 | [diff] [blame] | 1144 | static int __devinit mx3_camera_probe(struct platform_device *pdev) |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 1145 | { |
| 1146 | struct mx3_camera_dev *mx3_cam; |
| 1147 | struct resource *res; |
| 1148 | void __iomem *base; |
| 1149 | int err = 0; |
| 1150 | struct soc_camera_host *soc_host; |
| 1151 | |
| 1152 | res = platform_get_resource(pdev, IORESOURCE_MEM, 0); |
| 1153 | if (!res) { |
| 1154 | err = -ENODEV; |
| 1155 | goto egetres; |
| 1156 | } |
| 1157 | |
Joe Perches | 101b25b | 2010-11-05 00:07:39 -0300 | [diff] [blame] | 1158 | mx3_cam = vzalloc(sizeof(*mx3_cam)); |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 1159 | if (!mx3_cam) { |
| 1160 | dev_err(&pdev->dev, "Could not allocate mx3 camera object\n"); |
| 1161 | err = -ENOMEM; |
| 1162 | goto ealloc; |
| 1163 | } |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 1164 | |
Guennadi Liakhovetski | b71df97 | 2009-04-03 10:34:02 -0300 | [diff] [blame] | 1165 | mx3_cam->clk = clk_get(&pdev->dev, NULL); |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 1166 | if (IS_ERR(mx3_cam->clk)) { |
| 1167 | err = PTR_ERR(mx3_cam->clk); |
| 1168 | goto eclkget; |
| 1169 | } |
| 1170 | |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 1171 | mx3_cam->pdata = pdev->dev.platform_data; |
| 1172 | mx3_cam->platform_flags = mx3_cam->pdata->flags; |
| 1173 | if (!(mx3_cam->platform_flags & (MX3_CAMERA_DATAWIDTH_4 | |
| 1174 | MX3_CAMERA_DATAWIDTH_8 | MX3_CAMERA_DATAWIDTH_10 | |
| 1175 | MX3_CAMERA_DATAWIDTH_15))) { |
Guennadi Liakhovetski | 5d28d52 | 2009-12-11 11:15:05 -0300 | [diff] [blame] | 1176 | /* |
| 1177 | * Platform hasn't set available data widths. This is bad. |
| 1178 | * Warn and use a default. |
| 1179 | */ |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 1180 | dev_warn(&pdev->dev, "WARNING! Platform hasn't set available " |
| 1181 | "data widths, using default 8 bit\n"); |
| 1182 | mx3_cam->platform_flags |= MX3_CAMERA_DATAWIDTH_8; |
| 1183 | } |
| 1184 | |
| 1185 | mx3_cam->mclk = mx3_cam->pdata->mclk_10khz * 10000; |
| 1186 | if (!mx3_cam->mclk) { |
| 1187 | dev_warn(&pdev->dev, |
| 1188 | "mclk_10khz == 0! Please, fix your platform data. " |
| 1189 | "Using default 20MHz\n"); |
| 1190 | mx3_cam->mclk = 20000000; |
| 1191 | } |
| 1192 | |
| 1193 | /* list of video-buffers */ |
| 1194 | INIT_LIST_HEAD(&mx3_cam->capture); |
| 1195 | spin_lock_init(&mx3_cam->lock); |
| 1196 | |
Guennadi Liakhovetski | 40e2e09 | 2009-08-25 11:28:22 -0300 | [diff] [blame] | 1197 | base = ioremap(res->start, resource_size(res)); |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 1198 | if (!base) { |
Guennadi Liakhovetski | 40e2e09 | 2009-08-25 11:28:22 -0300 | [diff] [blame] | 1199 | pr_err("Couldn't map %x@%x\n", resource_size(res), res->start); |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 1200 | err = -ENOMEM; |
| 1201 | goto eioremap; |
| 1202 | } |
| 1203 | |
| 1204 | mx3_cam->base = base; |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 1205 | |
| 1206 | soc_host = &mx3_cam->soc_host; |
| 1207 | soc_host->drv_name = MX3_CAM_DRV_NAME; |
| 1208 | soc_host->ops = &mx3_soc_camera_host_ops; |
| 1209 | soc_host->priv = mx3_cam; |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 1210 | soc_host->v4l2_dev.dev = &pdev->dev; |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 1211 | soc_host->nr = pdev->id; |
Guennadi Liakhovetski | eff505f | 2009-04-24 12:55:48 -0300 | [diff] [blame] | 1212 | |
Guennadi Liakhovetski | 379fa5d | 2011-02-21 07:14:01 -0300 | [diff] [blame] | 1213 | mx3_cam->alloc_ctx = vb2_dma_contig_init_ctx(&pdev->dev); |
| 1214 | if (IS_ERR(mx3_cam->alloc_ctx)) { |
| 1215 | err = PTR_ERR(mx3_cam->alloc_ctx); |
| 1216 | goto eallocctx; |
| 1217 | } |
| 1218 | |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 1219 | err = soc_camera_host_register(soc_host); |
| 1220 | if (err) |
| 1221 | goto ecamhostreg; |
| 1222 | |
| 1223 | /* IDMAC interface */ |
| 1224 | dmaengine_get(); |
| 1225 | |
| 1226 | return 0; |
| 1227 | |
| 1228 | ecamhostreg: |
Guennadi Liakhovetski | 379fa5d | 2011-02-21 07:14:01 -0300 | [diff] [blame] | 1229 | vb2_dma_contig_cleanup_ctx(mx3_cam->alloc_ctx); |
| 1230 | eallocctx: |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 1231 | iounmap(base); |
| 1232 | eioremap: |
| 1233 | clk_put(mx3_cam->clk); |
| 1234 | eclkget: |
| 1235 | vfree(mx3_cam); |
| 1236 | ealloc: |
| 1237 | egetres: |
| 1238 | return err; |
| 1239 | } |
| 1240 | |
| 1241 | static int __devexit mx3_camera_remove(struct platform_device *pdev) |
| 1242 | { |
Guennadi Liakhovetski | eff505f | 2009-04-24 12:55:48 -0300 | [diff] [blame] | 1243 | struct soc_camera_host *soc_host = to_soc_camera_host(&pdev->dev); |
| 1244 | struct mx3_camera_dev *mx3_cam = container_of(soc_host, |
| 1245 | struct mx3_camera_dev, soc_host); |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 1246 | |
| 1247 | clk_put(mx3_cam->clk); |
| 1248 | |
Guennadi Liakhovetski | eff505f | 2009-04-24 12:55:48 -0300 | [diff] [blame] | 1249 | soc_camera_host_unregister(soc_host); |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 1250 | |
| 1251 | iounmap(mx3_cam->base); |
| 1252 | |
| 1253 | /* |
| 1254 | * The channel has either not been allocated, |
| 1255 | * or should have been released |
| 1256 | */ |
| 1257 | if (WARN_ON(mx3_cam->idmac_channel[0])) |
| 1258 | dma_release_channel(&mx3_cam->idmac_channel[0]->dma_chan); |
| 1259 | |
Guennadi Liakhovetski | 379fa5d | 2011-02-21 07:14:01 -0300 | [diff] [blame] | 1260 | vb2_dma_contig_cleanup_ctx(mx3_cam->alloc_ctx); |
| 1261 | |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 1262 | vfree(mx3_cam); |
| 1263 | |
| 1264 | dmaengine_put(); |
| 1265 | |
| 1266 | dev_info(&pdev->dev, "i.MX3x Camera driver unloaded\n"); |
| 1267 | |
| 1268 | return 0; |
| 1269 | } |
| 1270 | |
| 1271 | static struct platform_driver mx3_camera_driver = { |
| 1272 | .driver = { |
| 1273 | .name = MX3_CAM_DRV_NAME, |
| 1274 | }, |
| 1275 | .probe = mx3_camera_probe, |
Jean Delvare | e36bc31 | 2009-06-04 11:07:16 -0300 | [diff] [blame] | 1276 | .remove = __devexit_p(mx3_camera_remove), |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 1277 | }; |
| 1278 | |
| 1279 | |
Jean Delvare | e36bc31 | 2009-06-04 11:07:16 -0300 | [diff] [blame] | 1280 | static int __init mx3_camera_init(void) |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 1281 | { |
| 1282 | return platform_driver_register(&mx3_camera_driver); |
| 1283 | } |
| 1284 | |
| 1285 | static void __exit mx3_camera_exit(void) |
| 1286 | { |
| 1287 | platform_driver_unregister(&mx3_camera_driver); |
| 1288 | } |
| 1289 | |
| 1290 | module_init(mx3_camera_init); |
| 1291 | module_exit(mx3_camera_exit); |
| 1292 | |
| 1293 | MODULE_DESCRIPTION("i.MX3x SoC Camera Host driver"); |
| 1294 | MODULE_AUTHOR("Guennadi Liakhovetski <lg@denx.de>"); |
| 1295 | MODULE_LICENSE("GPL v2"); |
Guennadi Liakhovetski | 40e2e09 | 2009-08-25 11:28:22 -0300 | [diff] [blame] | 1296 | MODULE_ALIAS("platform:" MX3_CAM_DRV_NAME); |