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> |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 14 | #include <linux/videodev2.h> |
| 15 | #include <linux/platform_device.h> |
| 16 | #include <linux/clk.h> |
| 17 | #include <linux/vmalloc.h> |
| 18 | #include <linux/interrupt.h> |
Guennadi Liakhovetski | f39c1ab | 2009-11-09 16:11:34 -0300 | [diff] [blame] | 19 | #include <linux/sched.h> |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 20 | |
| 21 | #include <media/v4l2-common.h> |
| 22 | #include <media/v4l2-dev.h> |
Guennadi Liakhovetski | 379fa5d | 2011-02-21 07:14:01 -0300 | [diff] [blame] | 23 | #include <media/videobuf2-dma-contig.h> |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 24 | #include <media/soc_camera.h> |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 25 | #include <media/soc_mediabus.h> |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 26 | |
| 27 | #include <mach/ipu.h> |
Arnd Bergmann | 82906b1 | 2012-08-24 15:14:29 +0200 | [diff] [blame] | 28 | #include <linux/platform_data/camera-mx3.h> |
| 29 | #include <linux/platform_data/dma-imx.h> |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 30 | |
| 31 | #define MX3_CAM_DRV_NAME "mx3-camera" |
| 32 | |
| 33 | /* CMOS Sensor Interface Registers */ |
| 34 | #define CSI_REG_START 0x60 |
| 35 | |
| 36 | #define CSI_SENS_CONF (0x60 - CSI_REG_START) |
| 37 | #define CSI_SENS_FRM_SIZE (0x64 - CSI_REG_START) |
| 38 | #define CSI_ACT_FRM_SIZE (0x68 - CSI_REG_START) |
| 39 | #define CSI_OUT_FRM_CTRL (0x6C - CSI_REG_START) |
| 40 | #define CSI_TST_CTRL (0x70 - CSI_REG_START) |
| 41 | #define CSI_CCIR_CODE_1 (0x74 - CSI_REG_START) |
| 42 | #define CSI_CCIR_CODE_2 (0x78 - CSI_REG_START) |
| 43 | #define CSI_CCIR_CODE_3 (0x7C - CSI_REG_START) |
| 44 | #define CSI_FLASH_STROBE_1 (0x80 - CSI_REG_START) |
| 45 | #define CSI_FLASH_STROBE_2 (0x84 - CSI_REG_START) |
| 46 | |
| 47 | #define CSI_SENS_CONF_VSYNC_POL_SHIFT 0 |
| 48 | #define CSI_SENS_CONF_HSYNC_POL_SHIFT 1 |
| 49 | #define CSI_SENS_CONF_DATA_POL_SHIFT 2 |
| 50 | #define CSI_SENS_CONF_PIX_CLK_POL_SHIFT 3 |
| 51 | #define CSI_SENS_CONF_SENS_PRTCL_SHIFT 4 |
| 52 | #define CSI_SENS_CONF_SENS_CLKSRC_SHIFT 7 |
| 53 | #define CSI_SENS_CONF_DATA_FMT_SHIFT 8 |
| 54 | #define CSI_SENS_CONF_DATA_WIDTH_SHIFT 10 |
| 55 | #define CSI_SENS_CONF_EXT_VSYNC_SHIFT 15 |
| 56 | #define CSI_SENS_CONF_DIVRATIO_SHIFT 16 |
| 57 | |
| 58 | #define CSI_SENS_CONF_DATA_FMT_RGB_YUV444 (0UL << CSI_SENS_CONF_DATA_FMT_SHIFT) |
| 59 | #define CSI_SENS_CONF_DATA_FMT_YUV422 (2UL << CSI_SENS_CONF_DATA_FMT_SHIFT) |
| 60 | #define CSI_SENS_CONF_DATA_FMT_BAYER (3UL << CSI_SENS_CONF_DATA_FMT_SHIFT) |
| 61 | |
| 62 | #define MAX_VIDEO_MEM 16 |
| 63 | |
| 64 | struct mx3_camera_buffer { |
| 65 | /* common v4l buffer stuff -- must be first */ |
Guennadi Liakhovetski | 379fa5d | 2011-02-21 07:14:01 -0300 | [diff] [blame] | 66 | struct vb2_buffer vb; |
Guennadi Liakhovetski | 379fa5d | 2011-02-21 07:14:01 -0300 | [diff] [blame] | 67 | struct list_head queue; |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 68 | |
| 69 | /* One descriptot per scatterlist (per frame) */ |
| 70 | struct dma_async_tx_descriptor *txd; |
| 71 | |
| 72 | /* We have to "build" a scatterlist ourselves - one element per frame */ |
| 73 | struct scatterlist sg; |
| 74 | }; |
| 75 | |
| 76 | /** |
| 77 | * struct mx3_camera_dev - i.MX3x camera (CSI) object |
| 78 | * @dev: camera device, to which the coherent buffer is attached |
| 79 | * @icd: currently attached camera sensor |
| 80 | * @clk: pointer to clock |
| 81 | * @base: remapped register base address |
| 82 | * @pdata: platform data |
| 83 | * @platform_flags: platform flags |
| 84 | * @mclk: master clock frequency in Hz |
| 85 | * @capture: list of capture videobuffers |
| 86 | * @lock: protects video buffer lists |
| 87 | * @active: active video buffer |
| 88 | * @idmac_channel: array of pointers to IPU DMAC DMA channels |
| 89 | * @soc_host: embedded soc_host object |
| 90 | */ |
| 91 | struct mx3_camera_dev { |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 92 | /* |
| 93 | * i.MX3x is only supposed to handle one camera on its Camera Sensor |
| 94 | * Interface. If anyone ever builds hardware to enable more than one |
| 95 | * camera _simultaneously_, they will have to modify this driver too |
| 96 | */ |
| 97 | struct soc_camera_device *icd; |
| 98 | struct clk *clk; |
| 99 | |
| 100 | void __iomem *base; |
| 101 | |
| 102 | struct mx3_camera_pdata *pdata; |
| 103 | |
| 104 | unsigned long platform_flags; |
| 105 | unsigned long mclk; |
Guennadi Liakhovetski | 579cea0 | 2011-07-27 16:00:29 -0300 | [diff] [blame] | 106 | u16 width_flags; /* max 15 bits */ |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 107 | |
| 108 | struct list_head capture; |
| 109 | spinlock_t lock; /* Protects video buffer lists */ |
| 110 | struct mx3_camera_buffer *active; |
Guennadi Liakhovetski | 07f9244 | 2011-11-03 10:14:00 -0300 | [diff] [blame] | 111 | size_t buf_total; |
Guennadi Liakhovetski | 379fa5d | 2011-02-21 07:14:01 -0300 | [diff] [blame] | 112 | struct vb2_alloc_ctx *alloc_ctx; |
| 113 | enum v4l2_field field; |
| 114 | int sequence; |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 115 | |
| 116 | /* IDMAC / dmaengine interface */ |
| 117 | struct idmac_channel *idmac_channel[1]; /* We need one channel */ |
| 118 | |
| 119 | struct soc_camera_host soc_host; |
| 120 | }; |
| 121 | |
| 122 | struct dma_chan_request { |
| 123 | struct mx3_camera_dev *mx3_cam; |
| 124 | enum ipu_channel id; |
| 125 | }; |
| 126 | |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 127 | static u32 csi_reg_read(struct mx3_camera_dev *mx3, off_t reg) |
| 128 | { |
| 129 | return __raw_readl(mx3->base + reg); |
| 130 | } |
| 131 | |
| 132 | static void csi_reg_write(struct mx3_camera_dev *mx3, u32 value, off_t reg) |
| 133 | { |
| 134 | __raw_writel(value, mx3->base + reg); |
| 135 | } |
| 136 | |
Guennadi Liakhovetski | 379fa5d | 2011-02-21 07:14:01 -0300 | [diff] [blame] | 137 | static struct mx3_camera_buffer *to_mx3_vb(struct vb2_buffer *vb) |
| 138 | { |
| 139 | return container_of(vb, struct mx3_camera_buffer, vb); |
| 140 | } |
| 141 | |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 142 | /* Called from the IPU IDMAC ISR */ |
| 143 | static void mx3_cam_dma_done(void *arg) |
| 144 | { |
| 145 | struct idmac_tx_desc *desc = to_tx_desc(arg); |
| 146 | struct dma_chan *chan = desc->txd.chan; |
| 147 | struct idmac_channel *ichannel = to_idmac_chan(chan); |
| 148 | struct mx3_camera_dev *mx3_cam = ichannel->client; |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 149 | |
| 150 | dev_dbg(chan->device->dev, "callback cookie %d, active DMA 0x%08x\n", |
| 151 | desc->txd.cookie, mx3_cam->active ? sg_dma_address(&mx3_cam->active->sg) : 0); |
| 152 | |
| 153 | spin_lock(&mx3_cam->lock); |
| 154 | if (mx3_cam->active) { |
Guennadi Liakhovetski | 379fa5d | 2011-02-21 07:14:01 -0300 | [diff] [blame] | 155 | struct vb2_buffer *vb = &mx3_cam->active->vb; |
| 156 | struct mx3_camera_buffer *buf = to_mx3_vb(vb); |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 157 | |
Guennadi Liakhovetski | 379fa5d | 2011-02-21 07:14:01 -0300 | [diff] [blame] | 158 | list_del_init(&buf->queue); |
| 159 | do_gettimeofday(&vb->v4l2_buf.timestamp); |
| 160 | vb->v4l2_buf.field = mx3_cam->field; |
| 161 | vb->v4l2_buf.sequence = mx3_cam->sequence++; |
| 162 | vb2_buffer_done(vb, VB2_BUF_STATE_DONE); |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 163 | } |
| 164 | |
| 165 | if (list_empty(&mx3_cam->capture)) { |
| 166 | mx3_cam->active = NULL; |
| 167 | spin_unlock(&mx3_cam->lock); |
| 168 | |
| 169 | /* |
| 170 | * stop capture - without further buffers IPU_CHA_BUF0_RDY will |
| 171 | * not get updated |
| 172 | */ |
| 173 | return; |
| 174 | } |
| 175 | |
| 176 | mx3_cam->active = list_entry(mx3_cam->capture.next, |
Guennadi Liakhovetski | 379fa5d | 2011-02-21 07:14:01 -0300 | [diff] [blame] | 177 | struct mx3_camera_buffer, queue); |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 178 | spin_unlock(&mx3_cam->lock); |
| 179 | } |
| 180 | |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 181 | /* |
| 182 | * Videobuf operations |
| 183 | */ |
| 184 | |
| 185 | /* |
| 186 | * Calculate the __buffer__ (not data) size and number of buffers. |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 187 | */ |
Guennadi Liakhovetski | 379fa5d | 2011-02-21 07:14:01 -0300 | [diff] [blame] | 188 | static int mx3_videobuf_setup(struct vb2_queue *vq, |
Guennadi Liakhovetski | fc714e7 | 2011-08-24 10:30:21 -0300 | [diff] [blame] | 189 | const struct v4l2_format *fmt, |
Guennadi Liakhovetski | 379fa5d | 2011-02-21 07:14:01 -0300 | [diff] [blame] | 190 | unsigned int *count, unsigned int *num_planes, |
Marek Szyprowski | 035aa14 | 2011-08-24 06:43:36 -0300 | [diff] [blame] | 191 | unsigned int sizes[], void *alloc_ctxs[]) |
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 | struct soc_camera_device *icd = soc_camera_from_vb2q(vq); |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 194 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 195 | struct mx3_camera_dev *mx3_cam = ici->priv; |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 196 | |
| 197 | if (!mx3_cam->idmac_channel[0]) |
| 198 | return -EINVAL; |
| 199 | |
Guennadi Liakhovetski | 07f9244 | 2011-11-03 10:14:00 -0300 | [diff] [blame] | 200 | if (fmt) { |
| 201 | const struct soc_camera_format_xlate *xlate = soc_camera_xlate_by_fourcc(icd, |
| 202 | fmt->fmt.pix.pixelformat); |
Laurent Pinchart | bed8d80 | 2012-03-21 08:03:26 -0300 | [diff] [blame] | 203 | unsigned int bytes_per_line; |
| 204 | int ret; |
Laurent Pinchart | 2b61d46e | 2012-03-21 08:03:21 -0300 | [diff] [blame] | 205 | |
Guennadi Liakhovetski | 07f9244 | 2011-11-03 10:14:00 -0300 | [diff] [blame] | 206 | if (!xlate) |
| 207 | return -EINVAL; |
Laurent Pinchart | 2b61d46e | 2012-03-21 08:03:21 -0300 | [diff] [blame] | 208 | |
Laurent Pinchart | bed8d80 | 2012-03-21 08:03:26 -0300 | [diff] [blame] | 209 | ret = soc_mbus_bytes_per_line(fmt->fmt.pix.width, |
| 210 | xlate->host_fmt); |
| 211 | if (ret < 0) |
| 212 | return ret; |
Laurent Pinchart | 2b61d46e | 2012-03-21 08:03:21 -0300 | [diff] [blame] | 213 | |
Laurent Pinchart | bed8d80 | 2012-03-21 08:03:26 -0300 | [diff] [blame] | 214 | bytes_per_line = max_t(u32, fmt->fmt.pix.bytesperline, ret); |
| 215 | |
| 216 | ret = soc_mbus_image_size(xlate->host_fmt, bytes_per_line, |
| 217 | fmt->fmt.pix.height); |
| 218 | if (ret < 0) |
| 219 | return ret; |
| 220 | |
| 221 | sizes[0] = max_t(u32, fmt->fmt.pix.sizeimage, ret); |
Guennadi Liakhovetski | 07f9244 | 2011-11-03 10:14:00 -0300 | [diff] [blame] | 222 | } else { |
| 223 | /* Called from VIDIOC_REQBUFS or in compatibility mode */ |
Laurent Pinchart | 2b61d46e | 2012-03-21 08:03:21 -0300 | [diff] [blame] | 224 | sizes[0] = icd->sizeimage; |
Guennadi Liakhovetski | 07f9244 | 2011-11-03 10:14:00 -0300 | [diff] [blame] | 225 | } |
Guennadi Liakhovetski | 379fa5d | 2011-02-21 07:14:01 -0300 | [diff] [blame] | 226 | |
Guennadi Liakhovetski | 07f9244 | 2011-11-03 10:14:00 -0300 | [diff] [blame] | 227 | alloc_ctxs[0] = mx3_cam->alloc_ctx; |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 228 | |
Guennadi Liakhovetski | 07f9244 | 2011-11-03 10:14:00 -0300 | [diff] [blame] | 229 | if (!vq->num_buffers) |
| 230 | mx3_cam->sequence = 0; |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 231 | |
Guennadi Liakhovetski | 07f9244 | 2011-11-03 10:14:00 -0300 | [diff] [blame] | 232 | if (!*count) |
| 233 | *count = 2; |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 234 | |
Guennadi Liakhovetski | 07f9244 | 2011-11-03 10:14:00 -0300 | [diff] [blame] | 235 | /* If *num_planes != 0, we have already verified *count. */ |
| 236 | if (!*num_planes && |
| 237 | sizes[0] * *count + mx3_cam->buf_total > MAX_VIDEO_MEM * 1024 * 1024) |
| 238 | *count = (MAX_VIDEO_MEM * 1024 * 1024 - mx3_cam->buf_total) / |
| 239 | sizes[0]; |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 240 | |
Guennadi Liakhovetski | 07f9244 | 2011-11-03 10:14:00 -0300 | [diff] [blame] | 241 | *num_planes = 1; |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 242 | |
Guennadi Liakhovetski | 379fa5d | 2011-02-21 07:14:01 -0300 | [diff] [blame] | 243 | return 0; |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 244 | } |
| 245 | |
| 246 | static enum pixel_fmt fourcc_to_ipu_pix(__u32 fourcc) |
| 247 | { |
| 248 | /* Add more formats as need arises and test possibilities appear... */ |
| 249 | switch (fourcc) { |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 250 | case V4L2_PIX_FMT_RGB24: |
| 251 | return IPU_PIX_FMT_RGB24; |
Alberto Panizzo | a48be1d | 2011-01-17 06:52:10 -0300 | [diff] [blame] | 252 | case V4L2_PIX_FMT_UYVY: |
| 253 | case V4L2_PIX_FMT_RGB565: |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 254 | default: |
| 255 | return IPU_PIX_FMT_GENERIC; |
| 256 | } |
| 257 | } |
| 258 | |
Guennadi Liakhovetski | 379fa5d | 2011-02-21 07:14:01 -0300 | [diff] [blame] | 259 | static void mx3_videobuf_queue(struct vb2_buffer *vb) |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 260 | { |
Guennadi Liakhovetski | 379fa5d | 2011-02-21 07:14:01 -0300 | [diff] [blame] | 261 | struct soc_camera_device *icd = soc_camera_from_vb2q(vb->vb2_queue); |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 262 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 263 | struct mx3_camera_dev *mx3_cam = ici->priv; |
Guennadi Liakhovetski | 379fa5d | 2011-02-21 07:14:01 -0300 | [diff] [blame] | 264 | struct mx3_camera_buffer *buf = to_mx3_vb(vb); |
Guennadi Liakhovetski | 07f9244 | 2011-11-03 10:14:00 -0300 | [diff] [blame] | 265 | struct scatterlist *sg = &buf->sg; |
| 266 | struct dma_async_tx_descriptor *txd; |
| 267 | struct idmac_channel *ichan = mx3_cam->idmac_channel[0]; |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 268 | struct idmac_video_param *video = &ichan->params.video; |
Guennadi Liakhovetski | 07f9244 | 2011-11-03 10:14:00 -0300 | [diff] [blame] | 269 | const struct soc_mbus_pixelfmt *host_fmt = icd->current_fmt->host_fmt; |
Guennadi Liakhovetski | 379fa5d | 2011-02-21 07:14:01 -0300 | [diff] [blame] | 270 | unsigned long flags; |
Guennadi Liakhovetski | 07f9244 | 2011-11-03 10:14:00 -0300 | [diff] [blame] | 271 | dma_cookie_t cookie; |
| 272 | size_t new_size; |
| 273 | |
Laurent Pinchart | 2b61d46e | 2012-03-21 08:03:21 -0300 | [diff] [blame] | 274 | new_size = icd->sizeimage; |
Guennadi Liakhovetski | 07f9244 | 2011-11-03 10:14:00 -0300 | [diff] [blame] | 275 | |
| 276 | if (vb2_plane_size(vb, 0) < new_size) { |
| 277 | dev_err(icd->parent, "Buffer #%d too small (%lu < %zu)\n", |
| 278 | vb->v4l2_buf.index, vb2_plane_size(vb, 0), new_size); |
| 279 | goto error; |
| 280 | } |
| 281 | |
Alex Gershgorin | 1690d86 | 2012-08-01 05:05:10 -0300 | [diff] [blame] | 282 | if (!buf->txd) { |
Guennadi Liakhovetski | 07f9244 | 2011-11-03 10:14:00 -0300 | [diff] [blame] | 283 | sg_dma_address(sg) = vb2_dma_contig_plane_dma_addr(vb, 0); |
| 284 | sg_dma_len(sg) = new_size; |
| 285 | |
Alexandre Bounine | 1605282 | 2012-03-08 16:11:18 -0500 | [diff] [blame] | 286 | txd = dmaengine_prep_slave_sg( |
Vinod Koul | e0d23ef | 2011-11-17 14:54:38 +0530 | [diff] [blame] | 287 | &ichan->dma_chan, sg, 1, DMA_DEV_TO_MEM, |
Guennadi Liakhovetski | 07f9244 | 2011-11-03 10:14:00 -0300 | [diff] [blame] | 288 | DMA_PREP_INTERRUPT); |
| 289 | if (!txd) |
| 290 | goto error; |
| 291 | |
| 292 | txd->callback_param = txd; |
| 293 | txd->callback = mx3_cam_dma_done; |
| 294 | |
Guennadi Liakhovetski | 07f9244 | 2011-11-03 10:14:00 -0300 | [diff] [blame] | 295 | buf->txd = txd; |
| 296 | } else { |
| 297 | txd = buf->txd; |
| 298 | } |
| 299 | |
| 300 | vb2_set_plane_payload(vb, 0, new_size); |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 301 | |
| 302 | /* This is the configuration of one sg-element */ |
Guennadi Liakhovetski | 07f9244 | 2011-11-03 10:14:00 -0300 | [diff] [blame] | 303 | video->out_pixel_fmt = fourcc_to_ipu_pix(host_fmt->fourcc); |
Alberto Panizzo | a48be1d | 2011-01-17 06:52:10 -0300 | [diff] [blame] | 304 | |
| 305 | if (video->out_pixel_fmt == IPU_PIX_FMT_GENERIC) { |
| 306 | /* |
Guennadi Liakhovetski | 07f9244 | 2011-11-03 10:14:00 -0300 | [diff] [blame] | 307 | * If the IPU DMA channel is configured to transfer generic |
| 308 | * 8-bit data, we have to set up the geometry parameters |
| 309 | * correctly, according to the current pixel format. The DMA |
| 310 | * horizontal parameters in this case are expressed in bytes, |
| 311 | * not in pixels. |
Alberto Panizzo | a48be1d | 2011-01-17 06:52:10 -0300 | [diff] [blame] | 312 | */ |
Laurent Pinchart | 1c0f95e | 2012-03-21 08:03:22 -0300 | [diff] [blame] | 313 | video->out_width = icd->bytesperline; |
Alberto Panizzo | a48be1d | 2011-01-17 06:52:10 -0300 | [diff] [blame] | 314 | video->out_height = icd->user_height; |
Laurent Pinchart | 1c0f95e | 2012-03-21 08:03:22 -0300 | [diff] [blame] | 315 | video->out_stride = icd->bytesperline; |
Alberto Panizzo | a48be1d | 2011-01-17 06:52:10 -0300 | [diff] [blame] | 316 | } else { |
| 317 | /* |
| 318 | * For IPU known formats the pixel unit will be managed |
| 319 | * successfully by the IPU code |
| 320 | */ |
| 321 | video->out_width = icd->user_width; |
| 322 | video->out_height = icd->user_height; |
| 323 | video->out_stride = icd->user_width; |
| 324 | } |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 325 | |
| 326 | #ifdef DEBUG |
| 327 | /* helps to see what DMA actually has written */ |
Guennadi Liakhovetski | 379fa5d | 2011-02-21 07:14:01 -0300 | [diff] [blame] | 328 | if (vb2_plane_vaddr(vb, 0)) |
| 329 | 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] | 330 | #endif |
| 331 | |
Guennadi Liakhovetski | 379fa5d | 2011-02-21 07:14:01 -0300 | [diff] [blame] | 332 | spin_lock_irqsave(&mx3_cam->lock, flags); |
| 333 | list_add_tail(&buf->queue, &mx3_cam->capture); |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 334 | |
Guennadi Liakhovetski | 379fa5d | 2011-02-21 07:14:01 -0300 | [diff] [blame] | 335 | if (!mx3_cam->active) |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 336 | mx3_cam->active = buf; |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 337 | |
Guennadi Liakhovetski | 2dd54a5 | 2009-08-05 20:06:31 -0300 | [diff] [blame] | 338 | spin_unlock_irq(&mx3_cam->lock); |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 339 | |
| 340 | cookie = txd->tx_submit(txd); |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 341 | dev_dbg(icd->parent, "Submitted cookie %d DMA 0x%08x\n", |
Guennadi Liakhovetski | 0166b74 | 2009-08-25 11:47:00 -0300 | [diff] [blame] | 342 | cookie, sg_dma_address(&buf->sg)); |
Guennadi Liakhovetski | 2dd54a5 | 2009-08-05 20:06:31 -0300 | [diff] [blame] | 343 | |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 344 | if (cookie >= 0) |
| 345 | return; |
| 346 | |
Guennadi Liakhovetski | 379fa5d | 2011-02-21 07:14:01 -0300 | [diff] [blame] | 347 | spin_lock_irq(&mx3_cam->lock); |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 348 | |
Guennadi Liakhovetski | 379fa5d | 2011-02-21 07:14:01 -0300 | [diff] [blame] | 349 | /* Submit error */ |
| 350 | list_del_init(&buf->queue); |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 351 | |
| 352 | if (mx3_cam->active == buf) |
| 353 | mx3_cam->active = NULL; |
Guennadi Liakhovetski | 379fa5d | 2011-02-21 07:14:01 -0300 | [diff] [blame] | 354 | |
| 355 | spin_unlock_irqrestore(&mx3_cam->lock, flags); |
Guennadi Liakhovetski | 07f9244 | 2011-11-03 10:14:00 -0300 | [diff] [blame] | 356 | error: |
Guennadi Liakhovetski | 379fa5d | 2011-02-21 07:14:01 -0300 | [diff] [blame] | 357 | vb2_buffer_done(vb, VB2_BUF_STATE_ERROR); |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 358 | } |
| 359 | |
Guennadi Liakhovetski | 379fa5d | 2011-02-21 07:14:01 -0300 | [diff] [blame] | 360 | static void mx3_videobuf_release(struct vb2_buffer *vb) |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 361 | { |
Guennadi Liakhovetski | 379fa5d | 2011-02-21 07:14:01 -0300 | [diff] [blame] | 362 | struct soc_camera_device *icd = soc_camera_from_vb2q(vb->vb2_queue); |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 363 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 364 | struct mx3_camera_dev *mx3_cam = ici->priv; |
Guennadi Liakhovetski | 379fa5d | 2011-02-21 07:14:01 -0300 | [diff] [blame] | 365 | struct mx3_camera_buffer *buf = to_mx3_vb(vb); |
| 366 | struct dma_async_tx_descriptor *txd = buf->txd; |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 367 | unsigned long flags; |
| 368 | |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 369 | dev_dbg(icd->parent, |
Guennadi Liakhovetski | 379fa5d | 2011-02-21 07:14:01 -0300 | [diff] [blame] | 370 | "Release%s DMA 0x%08x, queue %sempty\n", |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 371 | mx3_cam->active == buf ? " active" : "", sg_dma_address(&buf->sg), |
Guennadi Liakhovetski | 379fa5d | 2011-02-21 07:14:01 -0300 | [diff] [blame] | 372 | list_empty(&buf->queue) ? "" : "not "); |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 373 | |
Guennadi Liakhovetski | 379fa5d | 2011-02-21 07:14:01 -0300 | [diff] [blame] | 374 | spin_lock_irqsave(&mx3_cam->lock, flags); |
| 375 | |
| 376 | if (mx3_cam->active == buf) |
| 377 | mx3_cam->active = NULL; |
| 378 | |
| 379 | /* Doesn't hurt also if the list is empty */ |
| 380 | list_del_init(&buf->queue); |
Guennadi Liakhovetski | 379fa5d | 2011-02-21 07:14:01 -0300 | [diff] [blame] | 381 | |
| 382 | if (txd) { |
| 383 | buf->txd = NULL; |
| 384 | if (mx3_cam->idmac_channel[0]) |
| 385 | async_tx_ack(txd); |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 386 | } |
Guennadi Liakhovetski | 379fa5d | 2011-02-21 07:14:01 -0300 | [diff] [blame] | 387 | |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 388 | spin_unlock_irqrestore(&mx3_cam->lock, flags); |
Guennadi Liakhovetski | 07f9244 | 2011-11-03 10:14:00 -0300 | [diff] [blame] | 389 | |
| 390 | mx3_cam->buf_total -= vb2_plane_size(vb, 0); |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 391 | } |
| 392 | |
Guennadi Liakhovetski | 379fa5d | 2011-02-21 07:14:01 -0300 | [diff] [blame] | 393 | static int mx3_videobuf_init(struct vb2_buffer *vb) |
| 394 | { |
Guennadi Liakhovetski | 07f9244 | 2011-11-03 10:14:00 -0300 | [diff] [blame] | 395 | struct soc_camera_device *icd = soc_camera_from_vb2q(vb->vb2_queue); |
| 396 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
| 397 | struct mx3_camera_dev *mx3_cam = ici->priv; |
Guennadi Liakhovetski | 379fa5d | 2011-02-21 07:14:01 -0300 | [diff] [blame] | 398 | struct mx3_camera_buffer *buf = to_mx3_vb(vb); |
Guennadi Liakhovetski | 07f9244 | 2011-11-03 10:14:00 -0300 | [diff] [blame] | 399 | |
Alex Gershgorin | 1690d86 | 2012-08-01 05:05:10 -0300 | [diff] [blame] | 400 | if (!buf->txd) { |
| 401 | /* This is for locking debugging only */ |
| 402 | INIT_LIST_HEAD(&buf->queue); |
| 403 | sg_init_table(&buf->sg, 1); |
Guennadi Liakhovetski | 379fa5d | 2011-02-21 07:14:01 -0300 | [diff] [blame] | 404 | |
Alex Gershgorin | 1690d86 | 2012-08-01 05:05:10 -0300 | [diff] [blame] | 405 | mx3_cam->buf_total += vb2_plane_size(vb, 0); |
| 406 | } |
Guennadi Liakhovetski | 379fa5d | 2011-02-21 07:14:01 -0300 | [diff] [blame] | 407 | |
| 408 | return 0; |
| 409 | } |
| 410 | |
Guennadi Liakhovetski | 08a31b9 | 2011-03-25 05:24:01 -0300 | [diff] [blame] | 411 | static int mx3_stop_streaming(struct vb2_queue *q) |
| 412 | { |
| 413 | struct soc_camera_device *icd = soc_camera_from_vb2q(q); |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 414 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
Guennadi Liakhovetski | 08a31b9 | 2011-03-25 05:24:01 -0300 | [diff] [blame] | 415 | struct mx3_camera_dev *mx3_cam = ici->priv; |
| 416 | struct idmac_channel *ichan = mx3_cam->idmac_channel[0]; |
Guennadi Liakhovetski | 08a31b9 | 2011-03-25 05:24:01 -0300 | [diff] [blame] | 417 | struct mx3_camera_buffer *buf, *tmp; |
| 418 | unsigned long flags; |
| 419 | |
| 420 | if (ichan) { |
Guennadi Liakhovetski | 07f9244 | 2011-11-03 10:14:00 -0300 | [diff] [blame] | 421 | struct dma_chan *chan = &ichan->dma_chan; |
| 422 | chan->device->device_control(chan, DMA_PAUSE, 0); |
Guennadi Liakhovetski | 08a31b9 | 2011-03-25 05:24:01 -0300 | [diff] [blame] | 423 | } |
| 424 | |
| 425 | spin_lock_irqsave(&mx3_cam->lock, flags); |
| 426 | |
| 427 | mx3_cam->active = NULL; |
| 428 | |
| 429 | list_for_each_entry_safe(buf, tmp, &mx3_cam->capture, queue) { |
Guennadi Liakhovetski | 08a31b9 | 2011-03-25 05:24:01 -0300 | [diff] [blame] | 430 | list_del_init(&buf->queue); |
Guennadi Liakhovetski | 07f9244 | 2011-11-03 10:14:00 -0300 | [diff] [blame] | 431 | vb2_buffer_done(&buf->vb, VB2_BUF_STATE_ERROR); |
Guennadi Liakhovetski | 08a31b9 | 2011-03-25 05:24:01 -0300 | [diff] [blame] | 432 | } |
| 433 | |
| 434 | spin_unlock_irqrestore(&mx3_cam->lock, flags); |
| 435 | |
| 436 | return 0; |
| 437 | } |
| 438 | |
Guennadi Liakhovetski | 379fa5d | 2011-02-21 07:14:01 -0300 | [diff] [blame] | 439 | static struct vb2_ops mx3_videobuf_ops = { |
| 440 | .queue_setup = mx3_videobuf_setup, |
Guennadi Liakhovetski | 379fa5d | 2011-02-21 07:14:01 -0300 | [diff] [blame] | 441 | .buf_queue = mx3_videobuf_queue, |
| 442 | .buf_cleanup = mx3_videobuf_release, |
| 443 | .buf_init = mx3_videobuf_init, |
| 444 | .wait_prepare = soc_camera_unlock, |
| 445 | .wait_finish = soc_camera_lock, |
Guennadi Liakhovetski | 08a31b9 | 2011-03-25 05:24:01 -0300 | [diff] [blame] | 446 | .stop_streaming = mx3_stop_streaming, |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 447 | }; |
| 448 | |
Guennadi Liakhovetski | 379fa5d | 2011-02-21 07:14:01 -0300 | [diff] [blame] | 449 | static int mx3_camera_init_videobuf(struct vb2_queue *q, |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 450 | struct soc_camera_device *icd) |
| 451 | { |
Guennadi Liakhovetski | 379fa5d | 2011-02-21 07:14:01 -0300 | [diff] [blame] | 452 | q->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; |
| 453 | q->io_modes = VB2_MMAP | VB2_USERPTR; |
| 454 | q->drv_priv = icd; |
| 455 | q->ops = &mx3_videobuf_ops; |
| 456 | q->mem_ops = &vb2_dma_contig_memops; |
| 457 | q->buf_struct_size = sizeof(struct mx3_camera_buffer); |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 458 | |
Guennadi Liakhovetski | 379fa5d | 2011-02-21 07:14:01 -0300 | [diff] [blame] | 459 | return vb2_queue_init(q); |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 460 | } |
| 461 | |
| 462 | /* First part of ipu_csi_init_interface() */ |
| 463 | static void mx3_camera_activate(struct mx3_camera_dev *mx3_cam, |
| 464 | struct soc_camera_device *icd) |
| 465 | { |
| 466 | u32 conf; |
| 467 | long rate; |
| 468 | |
| 469 | /* Set default size: ipu_csi_set_window_size() */ |
| 470 | csi_reg_write(mx3_cam, (640 - 1) | ((480 - 1) << 16), CSI_ACT_FRM_SIZE); |
| 471 | /* ...and position to 0:0: ipu_csi_set_window_pos() */ |
| 472 | conf = csi_reg_read(mx3_cam, CSI_OUT_FRM_CTRL) & 0xffff0000; |
| 473 | csi_reg_write(mx3_cam, conf, CSI_OUT_FRM_CTRL); |
| 474 | |
| 475 | /* We use only gated clock synchronisation mode so far */ |
| 476 | conf = 0 << CSI_SENS_CONF_SENS_PRTCL_SHIFT; |
| 477 | |
| 478 | /* Set generic data, platform-biggest bus-width */ |
| 479 | conf |= CSI_SENS_CONF_DATA_FMT_BAYER; |
| 480 | |
| 481 | if (mx3_cam->platform_flags & MX3_CAMERA_DATAWIDTH_15) |
| 482 | conf |= 3 << CSI_SENS_CONF_DATA_WIDTH_SHIFT; |
| 483 | else if (mx3_cam->platform_flags & MX3_CAMERA_DATAWIDTH_10) |
| 484 | conf |= 2 << CSI_SENS_CONF_DATA_WIDTH_SHIFT; |
| 485 | else if (mx3_cam->platform_flags & MX3_CAMERA_DATAWIDTH_8) |
| 486 | conf |= 1 << CSI_SENS_CONF_DATA_WIDTH_SHIFT; |
| 487 | else/* if (mx3_cam->platform_flags & MX3_CAMERA_DATAWIDTH_4)*/ |
| 488 | conf |= 0 << CSI_SENS_CONF_DATA_WIDTH_SHIFT; |
| 489 | |
| 490 | if (mx3_cam->platform_flags & MX3_CAMERA_CLK_SRC) |
| 491 | conf |= 1 << CSI_SENS_CONF_SENS_CLKSRC_SHIFT; |
| 492 | if (mx3_cam->platform_flags & MX3_CAMERA_EXT_VSYNC) |
| 493 | conf |= 1 << CSI_SENS_CONF_EXT_VSYNC_SHIFT; |
| 494 | if (mx3_cam->platform_flags & MX3_CAMERA_DP) |
| 495 | conf |= 1 << CSI_SENS_CONF_DATA_POL_SHIFT; |
| 496 | if (mx3_cam->platform_flags & MX3_CAMERA_PCP) |
| 497 | conf |= 1 << CSI_SENS_CONF_PIX_CLK_POL_SHIFT; |
| 498 | if (mx3_cam->platform_flags & MX3_CAMERA_HSP) |
| 499 | conf |= 1 << CSI_SENS_CONF_HSYNC_POL_SHIFT; |
| 500 | if (mx3_cam->platform_flags & MX3_CAMERA_VSP) |
| 501 | conf |= 1 << CSI_SENS_CONF_VSYNC_POL_SHIFT; |
| 502 | |
| 503 | /* ipu_csi_init_interface() */ |
| 504 | csi_reg_write(mx3_cam, conf, CSI_SENS_CONF); |
| 505 | |
Sascha Hauer | fdf7748 | 2012-04-03 12:35:16 +0200 | [diff] [blame] | 506 | clk_prepare_enable(mx3_cam->clk); |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 507 | rate = clk_round_rate(mx3_cam->clk, mx3_cam->mclk); |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 508 | dev_dbg(icd->parent, "Set SENS_CONF to %x, rate %ld\n", conf, rate); |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 509 | if (rate) |
| 510 | clk_set_rate(mx3_cam->clk, rate); |
| 511 | } |
| 512 | |
| 513 | /* Called with .video_lock held */ |
| 514 | static int mx3_camera_add_device(struct soc_camera_device *icd) |
| 515 | { |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 516 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 517 | struct mx3_camera_dev *mx3_cam = ici->priv; |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 518 | |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 519 | if (mx3_cam->icd) |
| 520 | return -EBUSY; |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 521 | |
| 522 | mx3_camera_activate(mx3_cam, icd); |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 523 | |
Guennadi Liakhovetski | 07f9244 | 2011-11-03 10:14:00 -0300 | [diff] [blame] | 524 | mx3_cam->buf_total = 0; |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 525 | mx3_cam->icd = icd; |
| 526 | |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 527 | dev_info(icd->parent, "MX3 Camera driver attached to camera %d\n", |
Guennadi Liakhovetski | 40e2e09 | 2009-08-25 11:28:22 -0300 | [diff] [blame] | 528 | icd->devnum); |
| 529 | |
| 530 | return 0; |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 531 | } |
| 532 | |
| 533 | /* Called with .video_lock held */ |
| 534 | static void mx3_camera_remove_device(struct soc_camera_device *icd) |
| 535 | { |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 536 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 537 | struct mx3_camera_dev *mx3_cam = ici->priv; |
| 538 | struct idmac_channel **ichan = &mx3_cam->idmac_channel[0]; |
| 539 | |
| 540 | BUG_ON(icd != mx3_cam->icd); |
| 541 | |
| 542 | if (*ichan) { |
| 543 | dma_release_channel(&(*ichan)->dma_chan); |
| 544 | *ichan = NULL; |
| 545 | } |
| 546 | |
Sascha Hauer | fdf7748 | 2012-04-03 12:35:16 +0200 | [diff] [blame] | 547 | clk_disable_unprepare(mx3_cam->clk); |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 548 | |
| 549 | mx3_cam->icd = NULL; |
| 550 | |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 551 | dev_info(icd->parent, "MX3 Camera driver detached from camera %d\n", |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 552 | icd->devnum); |
| 553 | } |
| 554 | |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 555 | static int test_platform_param(struct mx3_camera_dev *mx3_cam, |
| 556 | unsigned char buswidth, unsigned long *flags) |
| 557 | { |
| 558 | /* |
Guennadi Liakhovetski | 579cea0 | 2011-07-27 16:00:29 -0300 | [diff] [blame] | 559 | * If requested data width is supported by the platform, use it or any |
| 560 | * possible lower value - i.MX31 is smart enough to shift bits |
| 561 | */ |
| 562 | if (buswidth > fls(mx3_cam->width_flags)) |
| 563 | return -EINVAL; |
| 564 | |
| 565 | /* |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 566 | * Platform specified synchronization and pixel clock polarities are |
| 567 | * only a recommendation and are only used during probing. MX3x |
| 568 | * camera interface only works in master mode, i.e., uses HSYNC and |
| 569 | * VSYNC signals from the sensor |
| 570 | */ |
Guennadi Liakhovetski | 579cea0 | 2011-07-27 16:00:29 -0300 | [diff] [blame] | 571 | *flags = V4L2_MBUS_MASTER | |
| 572 | V4L2_MBUS_HSYNC_ACTIVE_HIGH | |
| 573 | V4L2_MBUS_HSYNC_ACTIVE_LOW | |
| 574 | V4L2_MBUS_VSYNC_ACTIVE_HIGH | |
| 575 | V4L2_MBUS_VSYNC_ACTIVE_LOW | |
| 576 | V4L2_MBUS_PCLK_SAMPLE_RISING | |
| 577 | V4L2_MBUS_PCLK_SAMPLE_FALLING | |
| 578 | V4L2_MBUS_DATA_ACTIVE_HIGH | |
| 579 | V4L2_MBUS_DATA_ACTIVE_LOW; |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 580 | |
| 581 | return 0; |
| 582 | } |
| 583 | |
| 584 | static int mx3_camera_try_bus_param(struct soc_camera_device *icd, |
| 585 | const unsigned int depth) |
| 586 | { |
Guennadi Liakhovetski | 579cea0 | 2011-07-27 16:00:29 -0300 | [diff] [blame] | 587 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 588 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 589 | struct mx3_camera_dev *mx3_cam = ici->priv; |
Guennadi Liakhovetski | 579cea0 | 2011-07-27 16:00:29 -0300 | [diff] [blame] | 590 | struct v4l2_mbus_config cfg = {.type = V4L2_MBUS_PARALLEL,}; |
| 591 | unsigned long bus_flags, common_flags; |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 592 | int ret = test_platform_param(mx3_cam, depth, &bus_flags); |
| 593 | |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 594 | dev_dbg(icd->parent, "request bus width %d bit: %d\n", depth, ret); |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 595 | |
| 596 | if (ret < 0) |
| 597 | return ret; |
| 598 | |
Guennadi Liakhovetski | 579cea0 | 2011-07-27 16:00:29 -0300 | [diff] [blame] | 599 | ret = v4l2_subdev_call(sd, video, g_mbus_config, &cfg); |
| 600 | if (!ret) { |
| 601 | common_flags = soc_mbus_config_compatible(&cfg, |
| 602 | bus_flags); |
| 603 | if (!common_flags) { |
| 604 | dev_warn(icd->parent, |
| 605 | "Flags incompatible: camera 0x%x, host 0x%lx\n", |
| 606 | cfg.flags, bus_flags); |
| 607 | return -EINVAL; |
| 608 | } |
| 609 | } else if (ret != -ENOIOCTLCMD) { |
| 610 | return ret; |
| 611 | } |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 612 | |
Guennadi Liakhovetski | 579cea0 | 2011-07-27 16:00:29 -0300 | [diff] [blame] | 613 | return 0; |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 614 | } |
| 615 | |
| 616 | static bool chan_filter(struct dma_chan *chan, void *arg) |
| 617 | { |
| 618 | struct dma_chan_request *rq = arg; |
| 619 | struct mx3_camera_pdata *pdata; |
| 620 | |
Sascha Hauer | a8de663 | 2010-11-05 06:26:03 -0300 | [diff] [blame] | 621 | if (!imx_dma_is_ipu(chan)) |
| 622 | return false; |
| 623 | |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 624 | if (!rq) |
| 625 | return false; |
| 626 | |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 627 | pdata = rq->mx3_cam->soc_host.v4l2_dev.dev->platform_data; |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 628 | |
| 629 | return rq->id == chan->chan_id && |
| 630 | pdata->dma_dev == chan->device->dev; |
| 631 | } |
| 632 | |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 633 | static const struct soc_mbus_pixelfmt mx3_camera_formats[] = { |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 634 | { |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 635 | .fourcc = V4L2_PIX_FMT_SBGGR8, |
| 636 | .name = "Bayer BGGR (sRGB) 8 bit", |
| 637 | .bits_per_sample = 8, |
| 638 | .packing = SOC_MBUS_PACKING_NONE, |
| 639 | .order = SOC_MBUS_ORDER_LE, |
Laurent Pinchart | ad3b81f | 2012-03-21 08:03:23 -0300 | [diff] [blame] | 640 | .layout = SOC_MBUS_LAYOUT_PACKED, |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 641 | }, { |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 642 | .fourcc = V4L2_PIX_FMT_GREY, |
| 643 | .name = "Monochrome 8 bit", |
| 644 | .bits_per_sample = 8, |
| 645 | .packing = SOC_MBUS_PACKING_NONE, |
| 646 | .order = SOC_MBUS_ORDER_LE, |
Laurent Pinchart | ad3b81f | 2012-03-21 08:03:23 -0300 | [diff] [blame] | 647 | .layout = SOC_MBUS_LAYOUT_PACKED, |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 648 | }, |
| 649 | }; |
| 650 | |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 651 | /* This will be corrected as we get more formats */ |
| 652 | static bool mx3_camera_packing_supported(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 | return fmt->packing == SOC_MBUS_PACKING_NONE || |
| 655 | (fmt->bits_per_sample == 8 && |
| 656 | fmt->packing == SOC_MBUS_PACKING_2X8_PADHI) || |
| 657 | (fmt->bits_per_sample > 8 && |
| 658 | fmt->packing == SOC_MBUS_PACKING_EXTEND16); |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 659 | } |
| 660 | |
Hans Verkuil | 3805f20 | 2010-05-08 17:55:00 -0300 | [diff] [blame] | 661 | 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] | 662 | struct soc_camera_format_xlate *xlate) |
| 663 | { |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 664 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 665 | struct device *dev = icd->parent; |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 666 | int formats = 0, ret; |
| 667 | enum v4l2_mbus_pixelcode code; |
| 668 | const struct soc_mbus_pixelfmt *fmt; |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 669 | |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 670 | ret = v4l2_subdev_call(sd, video, enum_mbus_fmt, idx, &code); |
| 671 | if (ret < 0) |
| 672 | /* No more formats */ |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 673 | return 0; |
| 674 | |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 675 | fmt = soc_mbus_get_fmtdesc(code); |
| 676 | if (!fmt) { |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 677 | dev_warn(icd->parent, |
Guennadi Liakhovetski | d2dcad4 | 2011-05-18 06:49:54 -0300 | [diff] [blame] | 678 | "Unsupported format code #%u: %d\n", idx, code); |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 679 | return 0; |
| 680 | } |
| 681 | |
| 682 | /* This also checks support for the requested bits-per-sample */ |
| 683 | ret = mx3_camera_try_bus_param(icd, fmt->bits_per_sample); |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 684 | if (ret < 0) |
| 685 | return 0; |
| 686 | |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 687 | switch (code) { |
| 688 | case V4L2_MBUS_FMT_SBGGR10_1X10: |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 689 | formats++; |
| 690 | if (xlate) { |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 691 | xlate->host_fmt = &mx3_camera_formats[0]; |
| 692 | xlate->code = code; |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 693 | xlate++; |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 694 | dev_dbg(dev, "Providing format %s using code %d\n", |
| 695 | mx3_camera_formats[0].name, code); |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 696 | } |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 697 | break; |
| 698 | case V4L2_MBUS_FMT_Y10_1X10: |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 699 | formats++; |
| 700 | if (xlate) { |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 701 | xlate->host_fmt = &mx3_camera_formats[1]; |
| 702 | xlate->code = code; |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 703 | xlate++; |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 704 | dev_dbg(dev, "Providing format %s using code %d\n", |
| 705 | mx3_camera_formats[1].name, code); |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 706 | } |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 707 | break; |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 708 | default: |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 709 | if (!mx3_camera_packing_supported(fmt)) |
| 710 | return 0; |
| 711 | } |
| 712 | |
| 713 | /* Generic pass-through */ |
| 714 | formats++; |
| 715 | if (xlate) { |
| 716 | xlate->host_fmt = fmt; |
| 717 | xlate->code = code; |
Alberto Panizzo | a48be1d | 2011-01-17 06:52:10 -0300 | [diff] [blame] | 718 | dev_dbg(dev, "Providing format %c%c%c%c in pass-through mode\n", |
| 719 | (fmt->fourcc >> (0*8)) & 0xFF, |
| 720 | (fmt->fourcc >> (1*8)) & 0xFF, |
| 721 | (fmt->fourcc >> (2*8)) & 0xFF, |
| 722 | (fmt->fourcc >> (3*8)) & 0xFF); |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 723 | xlate++; |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 724 | } |
| 725 | |
| 726 | return formats; |
| 727 | } |
| 728 | |
Guennadi Liakhovetski | 09e231b | 2009-03-13 06:08:20 -0300 | [diff] [blame] | 729 | static void configure_geometry(struct mx3_camera_dev *mx3_cam, |
Alberto Panizzo | a48be1d | 2011-01-17 06:52:10 -0300 | [diff] [blame] | 730 | unsigned int width, unsigned int height, |
Guennadi Liakhovetski | d2dcad4 | 2011-05-18 06:49:54 -0300 | [diff] [blame] | 731 | const struct soc_mbus_pixelfmt *fmt) |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 732 | { |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 733 | u32 ctrl, width_field, height_field; |
Alberto Panizzo | a48be1d | 2011-01-17 06:52:10 -0300 | [diff] [blame] | 734 | |
| 735 | if (fourcc_to_ipu_pix(fmt->fourcc) == IPU_PIX_FMT_GENERIC) { |
| 736 | /* |
| 737 | * As the CSI will be configured to output BAYER, here |
| 738 | * the width parameter count the number of samples to |
| 739 | * capture to complete the whole image width. |
| 740 | */ |
Guennadi Liakhovetski | cc552b6 | 2011-05-20 04:25:09 -0300 | [diff] [blame] | 741 | unsigned int num, den; |
| 742 | int ret = soc_mbus_samples_per_pixel(fmt, &num, &den); |
| 743 | BUG_ON(ret < 0); |
| 744 | width = width * num / den; |
Alberto Panizzo | a48be1d | 2011-01-17 06:52:10 -0300 | [diff] [blame] | 745 | } |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 746 | |
| 747 | /* Setup frame size - this cannot be changed on-the-fly... */ |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 748 | width_field = width - 1; |
| 749 | height_field = height - 1; |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 750 | csi_reg_write(mx3_cam, width_field | (height_field << 16), CSI_SENS_FRM_SIZE); |
| 751 | |
| 752 | csi_reg_write(mx3_cam, width_field << 16, CSI_FLASH_STROBE_1); |
| 753 | csi_reg_write(mx3_cam, (height_field << 16) | 0x22, CSI_FLASH_STROBE_2); |
| 754 | |
| 755 | csi_reg_write(mx3_cam, width_field | (height_field << 16), CSI_ACT_FRM_SIZE); |
| 756 | |
| 757 | /* ...and position */ |
| 758 | ctrl = csi_reg_read(mx3_cam, CSI_OUT_FRM_CTRL) & 0xffff0000; |
| 759 | /* Sensor does the cropping */ |
| 760 | 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] | 761 | } |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 762 | |
Guennadi Liakhovetski | 09e231b | 2009-03-13 06:08:20 -0300 | [diff] [blame] | 763 | static int acquire_dma_channel(struct mx3_camera_dev *mx3_cam) |
| 764 | { |
| 765 | dma_cap_mask_t mask; |
| 766 | struct dma_chan *chan; |
| 767 | struct idmac_channel **ichan = &mx3_cam->idmac_channel[0]; |
| 768 | /* We have to use IDMAC_IC_7 for Bayer / generic data */ |
| 769 | struct dma_chan_request rq = {.mx3_cam = mx3_cam, |
| 770 | .id = IDMAC_IC_7}; |
| 771 | |
Guennadi Liakhovetski | 09e231b | 2009-03-13 06:08:20 -0300 | [diff] [blame] | 772 | dma_cap_zero(mask); |
| 773 | dma_cap_set(DMA_SLAVE, mask); |
| 774 | dma_cap_set(DMA_PRIVATE, mask); |
| 775 | chan = dma_request_channel(mask, chan_filter, &rq); |
| 776 | if (!chan) |
| 777 | return -EBUSY; |
| 778 | |
| 779 | *ichan = to_idmac_chan(chan); |
| 780 | (*ichan)->client = mx3_cam; |
| 781 | |
| 782 | return 0; |
| 783 | } |
| 784 | |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 785 | /* |
| 786 | * FIXME: learn to use stride != width, then we can keep stride properly aligned |
| 787 | * and support arbitrary (even) widths. |
| 788 | */ |
Márton Németh | e26b314 | 2010-02-24 17:13:29 -0300 | [diff] [blame] | 789 | static inline void stride_align(__u32 *width) |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 790 | { |
Guennadi Liakhovetski | d2dcad4 | 2011-05-18 06:49:54 -0300 | [diff] [blame] | 791 | if (ALIGN(*width, 8) < 4096) |
| 792 | *width = ALIGN(*width, 8); |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 793 | else |
| 794 | *width = *width & ~7; |
| 795 | } |
| 796 | |
| 797 | /* |
| 798 | * As long as we don't implement host-side cropping and scaling, we can use |
| 799 | * default g_crop and cropcap from soc_camera.c |
| 800 | */ |
Guennadi Liakhovetski | 09e231b | 2009-03-13 06:08:20 -0300 | [diff] [blame] | 801 | static int mx3_camera_set_crop(struct soc_camera_device *icd, |
Guennadi Liakhovetski | 08590b9 | 2009-08-25 11:46:54 -0300 | [diff] [blame] | 802 | struct v4l2_crop *a) |
Guennadi Liakhovetski | 09e231b | 2009-03-13 06:08:20 -0300 | [diff] [blame] | 803 | { |
Guennadi Liakhovetski | 08590b9 | 2009-08-25 11:46:54 -0300 | [diff] [blame] | 804 | struct v4l2_rect *rect = &a->c; |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 805 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
Guennadi Liakhovetski | 09e231b | 2009-03-13 06:08:20 -0300 | [diff] [blame] | 806 | struct mx3_camera_dev *mx3_cam = ici->priv; |
Guennadi Liakhovetski | c9c1f1c | 2009-08-25 11:46:59 -0300 | [diff] [blame] | 807 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 808 | struct v4l2_mbus_framefmt mf; |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 809 | int ret; |
Guennadi Liakhovetski | 09e231b | 2009-03-13 06:08:20 -0300 | [diff] [blame] | 810 | |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 811 | soc_camera_limit_side(&rect->left, &rect->width, 0, 2, 4096); |
| 812 | soc_camera_limit_side(&rect->top, &rect->height, 0, 2, 4096); |
| 813 | |
| 814 | ret = v4l2_subdev_call(sd, video, s_crop, a); |
| 815 | if (ret < 0) |
| 816 | return ret; |
| 817 | |
Guennadi Liakhovetski | d2dcad4 | 2011-05-18 06:49:54 -0300 | [diff] [blame] | 818 | /* The capture device might have changed its output sizes */ |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 819 | ret = v4l2_subdev_call(sd, video, g_mbus_fmt, &mf); |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 820 | if (ret < 0) |
| 821 | return ret; |
| 822 | |
Guennadi Liakhovetski | d2dcad4 | 2011-05-18 06:49:54 -0300 | [diff] [blame] | 823 | if (mf.code != icd->current_fmt->code) |
| 824 | return -EINVAL; |
| 825 | |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 826 | if (mf.width & 7) { |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 827 | /* Ouch! We can only handle 8-byte aligned width... */ |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 828 | stride_align(&mf.width); |
| 829 | ret = v4l2_subdev_call(sd, video, s_mbus_fmt, &mf); |
Guennadi Liakhovetski | 09e231b | 2009-03-13 06:08:20 -0300 | [diff] [blame] | 830 | if (ret < 0) |
| 831 | return ret; |
| 832 | } |
| 833 | |
Guennadi Liakhovetski | 379fa5d | 2011-02-21 07:14:01 -0300 | [diff] [blame] | 834 | if (mf.width != icd->user_width || mf.height != icd->user_height) |
Guennadi Liakhovetski | d2dcad4 | 2011-05-18 06:49:54 -0300 | [diff] [blame] | 835 | configure_geometry(mx3_cam, mf.width, mf.height, |
| 836 | icd->current_fmt->host_fmt); |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 837 | |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 838 | dev_dbg(icd->parent, "Sensor cropped %dx%d\n", |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 839 | mf.width, mf.height); |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 840 | |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 841 | icd->user_width = mf.width; |
| 842 | icd->user_height = mf.height; |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 843 | |
| 844 | return ret; |
Guennadi Liakhovetski | 09e231b | 2009-03-13 06:08:20 -0300 | [diff] [blame] | 845 | } |
| 846 | |
| 847 | static int mx3_camera_set_fmt(struct soc_camera_device *icd, |
| 848 | struct v4l2_format *f) |
| 849 | { |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 850 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
Guennadi Liakhovetski | 09e231b | 2009-03-13 06:08:20 -0300 | [diff] [blame] | 851 | struct mx3_camera_dev *mx3_cam = ici->priv; |
Guennadi Liakhovetski | c9c1f1c | 2009-08-25 11:46:59 -0300 | [diff] [blame] | 852 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); |
Guennadi Liakhovetski | 09e231b | 2009-03-13 06:08:20 -0300 | [diff] [blame] | 853 | const struct soc_camera_format_xlate *xlate; |
| 854 | struct v4l2_pix_format *pix = &f->fmt.pix; |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 855 | struct v4l2_mbus_framefmt mf; |
Guennadi Liakhovetski | 09e231b | 2009-03-13 06:08:20 -0300 | [diff] [blame] | 856 | int ret; |
| 857 | |
| 858 | xlate = soc_camera_xlate_by_fourcc(icd, pix->pixelformat); |
| 859 | if (!xlate) { |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 860 | dev_warn(icd->parent, "Format %x not found\n", |
Guennadi Liakhovetski | 0166b74 | 2009-08-25 11:47:00 -0300 | [diff] [blame] | 861 | pix->pixelformat); |
Guennadi Liakhovetski | 09e231b | 2009-03-13 06:08:20 -0300 | [diff] [blame] | 862 | return -EINVAL; |
| 863 | } |
| 864 | |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 865 | stride_align(&pix->width); |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 866 | dev_dbg(icd->parent, "Set format %dx%d\n", pix->width, pix->height); |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 867 | |
Guennadi Liakhovetski | 09e231b | 2009-03-13 06:08:20 -0300 | [diff] [blame] | 868 | /* |
| 869 | * Might have to perform a complete interface initialisation like in |
| 870 | * ipu_csi_init_interface() in mxc_v4l2_s_param(). Also consider |
| 871 | * mxc_v4l2_s_fmt() |
| 872 | */ |
| 873 | |
Guennadi Liakhovetski | d2dcad4 | 2011-05-18 06:49:54 -0300 | [diff] [blame] | 874 | configure_geometry(mx3_cam, pix->width, pix->height, xlate->host_fmt); |
Guennadi Liakhovetski | 09e231b | 2009-03-13 06:08:20 -0300 | [diff] [blame] | 875 | |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 876 | mf.width = pix->width; |
| 877 | mf.height = pix->height; |
| 878 | mf.field = pix->field; |
| 879 | mf.colorspace = pix->colorspace; |
| 880 | mf.code = xlate->code; |
| 881 | |
| 882 | ret = v4l2_subdev_call(sd, video, s_mbus_fmt, &mf); |
| 883 | if (ret < 0) |
| 884 | return ret; |
| 885 | |
| 886 | if (mf.code != xlate->code) |
| 887 | return -EINVAL; |
| 888 | |
Guennadi Liakhovetski | 379fa5d | 2011-02-21 07:14:01 -0300 | [diff] [blame] | 889 | if (!mx3_cam->idmac_channel[0]) { |
| 890 | ret = acquire_dma_channel(mx3_cam); |
| 891 | if (ret < 0) |
| 892 | return ret; |
| 893 | } |
| 894 | |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 895 | pix->width = mf.width; |
| 896 | pix->height = mf.height; |
| 897 | pix->field = mf.field; |
Guennadi Liakhovetski | 379fa5d | 2011-02-21 07:14:01 -0300 | [diff] [blame] | 898 | mx3_cam->field = mf.field; |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 899 | pix->colorspace = mf.colorspace; |
| 900 | icd->current_fmt = xlate; |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 901 | |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 902 | dev_dbg(icd->parent, "Sensor set %dx%d\n", pix->width, pix->height); |
Guennadi Liakhovetski | 6a6c878 | 2009-08-25 11:50:46 -0300 | [diff] [blame] | 903 | |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 904 | return ret; |
| 905 | } |
| 906 | |
| 907 | static int mx3_camera_try_fmt(struct soc_camera_device *icd, |
| 908 | struct v4l2_format *f) |
| 909 | { |
Guennadi Liakhovetski | c9c1f1c | 2009-08-25 11:46:59 -0300 | [diff] [blame] | 910 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 911 | const struct soc_camera_format_xlate *xlate; |
| 912 | struct v4l2_pix_format *pix = &f->fmt.pix; |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 913 | struct v4l2_mbus_framefmt mf; |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 914 | __u32 pixfmt = pix->pixelformat; |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 915 | int ret; |
| 916 | |
| 917 | xlate = soc_camera_xlate_by_fourcc(icd, pixfmt); |
| 918 | if (pixfmt && !xlate) { |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 919 | dev_warn(icd->parent, "Format %x not found\n", pixfmt); |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 920 | return -EINVAL; |
| 921 | } |
| 922 | |
| 923 | /* limit to MX3 hardware capabilities */ |
| 924 | if (pix->height > 4096) |
| 925 | pix->height = 4096; |
| 926 | if (pix->width > 4096) |
| 927 | pix->width = 4096; |
| 928 | |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 929 | /* limit to sensor capabilities */ |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 930 | mf.width = pix->width; |
| 931 | mf.height = pix->height; |
| 932 | mf.field = pix->field; |
| 933 | mf.colorspace = pix->colorspace; |
| 934 | mf.code = xlate->code; |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 935 | |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 936 | ret = v4l2_subdev_call(sd, video, try_mbus_fmt, &mf); |
| 937 | if (ret < 0) |
| 938 | return ret; |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 939 | |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 940 | pix->width = mf.width; |
| 941 | pix->height = mf.height; |
| 942 | pix->colorspace = mf.colorspace; |
| 943 | |
| 944 | switch (mf.field) { |
| 945 | case V4L2_FIELD_ANY: |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 946 | pix->field = V4L2_FIELD_NONE; |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 947 | break; |
| 948 | case V4L2_FIELD_NONE: |
| 949 | break; |
| 950 | default: |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 951 | dev_err(icd->parent, "Field type %d unsupported.\n", |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 952 | mf.field); |
| 953 | ret = -EINVAL; |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 954 | } |
| 955 | |
| 956 | return ret; |
| 957 | } |
| 958 | |
Guennadi Liakhovetski | 57bee29 | 2010-08-17 14:29:51 -0300 | [diff] [blame] | 959 | static int mx3_camera_reqbufs(struct soc_camera_device *icd, |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 960 | struct v4l2_requestbuffers *p) |
| 961 | { |
| 962 | return 0; |
| 963 | } |
| 964 | |
| 965 | static unsigned int mx3_camera_poll(struct file *file, poll_table *pt) |
| 966 | { |
Guennadi Liakhovetski | 57bee29 | 2010-08-17 14:29:51 -0300 | [diff] [blame] | 967 | struct soc_camera_device *icd = file->private_data; |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 968 | |
Guennadi Liakhovetski | 379fa5d | 2011-02-21 07:14:01 -0300 | [diff] [blame] | 969 | return vb2_poll(&icd->vb2_vidq, file, pt); |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 970 | } |
| 971 | |
| 972 | static int mx3_camera_querycap(struct soc_camera_host *ici, |
| 973 | struct v4l2_capability *cap) |
| 974 | { |
| 975 | /* cap->name is set by the firendly caller:-> */ |
| 976 | strlcpy(cap->card, "i.MX3x Camera", sizeof(cap->card)); |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 977 | cap->capabilities = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING; |
| 978 | |
| 979 | return 0; |
| 980 | } |
| 981 | |
Guennadi Liakhovetski | 8843d11 | 2011-09-21 17:52:51 -0300 | [diff] [blame] | 982 | static int mx3_camera_set_bus_param(struct soc_camera_device *icd) |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 983 | { |
Guennadi Liakhovetski | 579cea0 | 2011-07-27 16:00:29 -0300 | [diff] [blame] | 984 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 985 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 986 | struct mx3_camera_dev *mx3_cam = ici->priv; |
Guennadi Liakhovetski | 579cea0 | 2011-07-27 16:00:29 -0300 | [diff] [blame] | 987 | struct v4l2_mbus_config cfg = {.type = V4L2_MBUS_PARALLEL,}; |
Guennadi Liakhovetski | 8843d11 | 2011-09-21 17:52:51 -0300 | [diff] [blame] | 988 | u32 pixfmt = icd->current_fmt->host_fmt->fourcc; |
Guennadi Liakhovetski | 579cea0 | 2011-07-27 16:00:29 -0300 | [diff] [blame] | 989 | unsigned long bus_flags, common_flags; |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 990 | u32 dw, sens_conf; |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 991 | const struct soc_mbus_pixelfmt *fmt; |
| 992 | int buswidth; |
| 993 | int ret; |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 994 | const struct soc_camera_format_xlate *xlate; |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 995 | struct device *dev = icd->parent; |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 996 | |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 997 | fmt = soc_mbus_get_fmtdesc(icd->current_fmt->code); |
| 998 | if (!fmt) |
| 999 | return -EINVAL; |
| 1000 | |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 1001 | xlate = soc_camera_xlate_by_fourcc(icd, pixfmt); |
| 1002 | if (!xlate) { |
Guennadi Liakhovetski | 0166b74 | 2009-08-25 11:47:00 -0300 | [diff] [blame] | 1003 | dev_warn(dev, "Format %x not found\n", pixfmt); |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 1004 | return -EINVAL; |
| 1005 | } |
| 1006 | |
Guennadi Liakhovetski | 579cea0 | 2011-07-27 16:00:29 -0300 | [diff] [blame] | 1007 | buswidth = fmt->bits_per_sample; |
| 1008 | ret = test_platform_param(mx3_cam, buswidth, &bus_flags); |
| 1009 | |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 1010 | dev_dbg(dev, "requested bus width %d bit: %d\n", buswidth, ret); |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 1011 | |
| 1012 | if (ret < 0) |
| 1013 | return ret; |
| 1014 | |
Guennadi Liakhovetski | 579cea0 | 2011-07-27 16:00:29 -0300 | [diff] [blame] | 1015 | ret = v4l2_subdev_call(sd, video, g_mbus_config, &cfg); |
| 1016 | if (!ret) { |
| 1017 | common_flags = soc_mbus_config_compatible(&cfg, |
| 1018 | bus_flags); |
| 1019 | if (!common_flags) { |
| 1020 | dev_warn(icd->parent, |
| 1021 | "Flags incompatible: camera 0x%x, host 0x%lx\n", |
| 1022 | cfg.flags, bus_flags); |
| 1023 | return -EINVAL; |
| 1024 | } |
| 1025 | } else if (ret != -ENOIOCTLCMD) { |
| 1026 | return ret; |
| 1027 | } else { |
| 1028 | common_flags = bus_flags; |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 1029 | } |
| 1030 | |
Guennadi Liakhovetski | 579cea0 | 2011-07-27 16:00:29 -0300 | [diff] [blame] | 1031 | dev_dbg(dev, "Flags cam: 0x%x host: 0x%lx common: 0x%lx\n", |
| 1032 | cfg.flags, bus_flags, common_flags); |
| 1033 | |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 1034 | /* Make choices, based on platform preferences */ |
Guennadi Liakhovetski | 579cea0 | 2011-07-27 16:00:29 -0300 | [diff] [blame] | 1035 | if ((common_flags & V4L2_MBUS_HSYNC_ACTIVE_HIGH) && |
| 1036 | (common_flags & V4L2_MBUS_HSYNC_ACTIVE_LOW)) { |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 1037 | if (mx3_cam->platform_flags & MX3_CAMERA_HSP) |
Guennadi Liakhovetski | 579cea0 | 2011-07-27 16:00:29 -0300 | [diff] [blame] | 1038 | common_flags &= ~V4L2_MBUS_HSYNC_ACTIVE_HIGH; |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 1039 | else |
Guennadi Liakhovetski | 579cea0 | 2011-07-27 16:00:29 -0300 | [diff] [blame] | 1040 | common_flags &= ~V4L2_MBUS_HSYNC_ACTIVE_LOW; |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 1041 | } |
| 1042 | |
Guennadi Liakhovetski | 579cea0 | 2011-07-27 16:00:29 -0300 | [diff] [blame] | 1043 | if ((common_flags & V4L2_MBUS_VSYNC_ACTIVE_HIGH) && |
| 1044 | (common_flags & V4L2_MBUS_VSYNC_ACTIVE_LOW)) { |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 1045 | if (mx3_cam->platform_flags & MX3_CAMERA_VSP) |
Guennadi Liakhovetski | 579cea0 | 2011-07-27 16:00:29 -0300 | [diff] [blame] | 1046 | common_flags &= ~V4L2_MBUS_VSYNC_ACTIVE_HIGH; |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 1047 | else |
Guennadi Liakhovetski | 579cea0 | 2011-07-27 16:00:29 -0300 | [diff] [blame] | 1048 | common_flags &= ~V4L2_MBUS_VSYNC_ACTIVE_LOW; |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 1049 | } |
| 1050 | |
Guennadi Liakhovetski | 579cea0 | 2011-07-27 16:00:29 -0300 | [diff] [blame] | 1051 | if ((common_flags & V4L2_MBUS_DATA_ACTIVE_HIGH) && |
| 1052 | (common_flags & V4L2_MBUS_DATA_ACTIVE_LOW)) { |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 1053 | if (mx3_cam->platform_flags & MX3_CAMERA_DP) |
Guennadi Liakhovetski | 579cea0 | 2011-07-27 16:00:29 -0300 | [diff] [blame] | 1054 | common_flags &= ~V4L2_MBUS_DATA_ACTIVE_HIGH; |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 1055 | else |
Guennadi Liakhovetski | 579cea0 | 2011-07-27 16:00:29 -0300 | [diff] [blame] | 1056 | common_flags &= ~V4L2_MBUS_DATA_ACTIVE_LOW; |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 1057 | } |
| 1058 | |
Guennadi Liakhovetski | 579cea0 | 2011-07-27 16:00:29 -0300 | [diff] [blame] | 1059 | if ((common_flags & V4L2_MBUS_PCLK_SAMPLE_RISING) && |
| 1060 | (common_flags & V4L2_MBUS_PCLK_SAMPLE_FALLING)) { |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 1061 | if (mx3_cam->platform_flags & MX3_CAMERA_PCP) |
Guennadi Liakhovetski | 579cea0 | 2011-07-27 16:00:29 -0300 | [diff] [blame] | 1062 | common_flags &= ~V4L2_MBUS_PCLK_SAMPLE_RISING; |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 1063 | else |
Guennadi Liakhovetski | 579cea0 | 2011-07-27 16:00:29 -0300 | [diff] [blame] | 1064 | common_flags &= ~V4L2_MBUS_PCLK_SAMPLE_FALLING; |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 1065 | } |
| 1066 | |
Guennadi Liakhovetski | 579cea0 | 2011-07-27 16:00:29 -0300 | [diff] [blame] | 1067 | cfg.flags = common_flags; |
| 1068 | ret = v4l2_subdev_call(sd, video, s_mbus_config, &cfg); |
| 1069 | if (ret < 0 && ret != -ENOIOCTLCMD) { |
| 1070 | dev_dbg(dev, "camera s_mbus_config(0x%lx) returned %d\n", |
Guennadi Liakhovetski | 40e2e09 | 2009-08-25 11:28:22 -0300 | [diff] [blame] | 1071 | common_flags, ret); |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 1072 | return ret; |
Guennadi Liakhovetski | 40e2e09 | 2009-08-25 11:28:22 -0300 | [diff] [blame] | 1073 | } |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 1074 | |
| 1075 | /* |
| 1076 | * So far only gated clock mode is supported. Add a line |
| 1077 | * (3 << CSI_SENS_CONF_SENS_PRTCL_SHIFT) | |
| 1078 | * below and select the required mode when supporting other |
| 1079 | * synchronisation protocols. |
| 1080 | */ |
| 1081 | sens_conf = csi_reg_read(mx3_cam, CSI_SENS_CONF) & |
| 1082 | ~((1 << CSI_SENS_CONF_VSYNC_POL_SHIFT) | |
| 1083 | (1 << CSI_SENS_CONF_HSYNC_POL_SHIFT) | |
| 1084 | (1 << CSI_SENS_CONF_DATA_POL_SHIFT) | |
| 1085 | (1 << CSI_SENS_CONF_PIX_CLK_POL_SHIFT) | |
| 1086 | (3 << CSI_SENS_CONF_DATA_FMT_SHIFT) | |
| 1087 | (3 << CSI_SENS_CONF_DATA_WIDTH_SHIFT)); |
| 1088 | |
| 1089 | /* TODO: Support RGB and YUV formats */ |
| 1090 | |
| 1091 | /* This has been set in mx3_camera_activate(), but we clear it above */ |
| 1092 | sens_conf |= CSI_SENS_CONF_DATA_FMT_BAYER; |
| 1093 | |
Guennadi Liakhovetski | 579cea0 | 2011-07-27 16:00:29 -0300 | [diff] [blame] | 1094 | if (common_flags & V4L2_MBUS_PCLK_SAMPLE_FALLING) |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 1095 | sens_conf |= 1 << CSI_SENS_CONF_PIX_CLK_POL_SHIFT; |
Guennadi Liakhovetski | 579cea0 | 2011-07-27 16:00:29 -0300 | [diff] [blame] | 1096 | if (common_flags & V4L2_MBUS_HSYNC_ACTIVE_LOW) |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 1097 | sens_conf |= 1 << CSI_SENS_CONF_HSYNC_POL_SHIFT; |
Guennadi Liakhovetski | 579cea0 | 2011-07-27 16:00:29 -0300 | [diff] [blame] | 1098 | if (common_flags & V4L2_MBUS_VSYNC_ACTIVE_LOW) |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 1099 | sens_conf |= 1 << CSI_SENS_CONF_VSYNC_POL_SHIFT; |
Guennadi Liakhovetski | 579cea0 | 2011-07-27 16:00:29 -0300 | [diff] [blame] | 1100 | if (common_flags & V4L2_MBUS_DATA_ACTIVE_LOW) |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 1101 | sens_conf |= 1 << CSI_SENS_CONF_DATA_POL_SHIFT; |
| 1102 | |
| 1103 | /* Just do what we're asked to do */ |
Guennadi Liakhovetski | 760697b | 2009-12-11 11:46:49 -0300 | [diff] [blame] | 1104 | switch (xlate->host_fmt->bits_per_sample) { |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 1105 | case 4: |
| 1106 | dw = 0 << CSI_SENS_CONF_DATA_WIDTH_SHIFT; |
| 1107 | break; |
| 1108 | case 8: |
| 1109 | dw = 1 << CSI_SENS_CONF_DATA_WIDTH_SHIFT; |
| 1110 | break; |
| 1111 | case 10: |
| 1112 | dw = 2 << CSI_SENS_CONF_DATA_WIDTH_SHIFT; |
| 1113 | break; |
| 1114 | default: |
| 1115 | /* |
| 1116 | * Actually it can only be 15 now, default is just to silence |
| 1117 | * compiler warnings |
| 1118 | */ |
| 1119 | case 15: |
| 1120 | dw = 3 << CSI_SENS_CONF_DATA_WIDTH_SHIFT; |
| 1121 | } |
| 1122 | |
| 1123 | csi_reg_write(mx3_cam, sens_conf | dw, CSI_SENS_CONF); |
| 1124 | |
Guennadi Liakhovetski | 0166b74 | 2009-08-25 11:47:00 -0300 | [diff] [blame] | 1125 | dev_dbg(dev, "Set SENS_CONF to %x\n", sens_conf | dw); |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 1126 | |
| 1127 | return 0; |
| 1128 | } |
| 1129 | |
| 1130 | static struct soc_camera_host_ops mx3_soc_camera_host_ops = { |
| 1131 | .owner = THIS_MODULE, |
| 1132 | .add = mx3_camera_add_device, |
| 1133 | .remove = mx3_camera_remove_device, |
Guennadi Liakhovetski | 09e231b | 2009-03-13 06:08:20 -0300 | [diff] [blame] | 1134 | .set_crop = mx3_camera_set_crop, |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 1135 | .set_fmt = mx3_camera_set_fmt, |
| 1136 | .try_fmt = mx3_camera_try_fmt, |
| 1137 | .get_formats = mx3_camera_get_formats, |
Guennadi Liakhovetski | 379fa5d | 2011-02-21 07:14:01 -0300 | [diff] [blame] | 1138 | .init_videobuf2 = mx3_camera_init_videobuf, |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 1139 | .reqbufs = mx3_camera_reqbufs, |
| 1140 | .poll = mx3_camera_poll, |
| 1141 | .querycap = mx3_camera_querycap, |
| 1142 | .set_bus_param = mx3_camera_set_bus_param, |
| 1143 | }; |
| 1144 | |
Jean Delvare | e36bc31 | 2009-06-04 11:07:16 -0300 | [diff] [blame] | 1145 | static int __devinit mx3_camera_probe(struct platform_device *pdev) |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 1146 | { |
| 1147 | struct mx3_camera_dev *mx3_cam; |
| 1148 | struct resource *res; |
| 1149 | void __iomem *base; |
| 1150 | int err = 0; |
| 1151 | struct soc_camera_host *soc_host; |
| 1152 | |
| 1153 | res = platform_get_resource(pdev, IORESOURCE_MEM, 0); |
| 1154 | if (!res) { |
| 1155 | err = -ENODEV; |
| 1156 | goto egetres; |
| 1157 | } |
| 1158 | |
Joe Perches | 101b25b | 2010-11-05 00:07:39 -0300 | [diff] [blame] | 1159 | mx3_cam = vzalloc(sizeof(*mx3_cam)); |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 1160 | if (!mx3_cam) { |
| 1161 | dev_err(&pdev->dev, "Could not allocate mx3 camera object\n"); |
| 1162 | err = -ENOMEM; |
| 1163 | goto ealloc; |
| 1164 | } |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 1165 | |
Guennadi Liakhovetski | b71df97 | 2009-04-03 10:34:02 -0300 | [diff] [blame] | 1166 | mx3_cam->clk = clk_get(&pdev->dev, NULL); |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 1167 | if (IS_ERR(mx3_cam->clk)) { |
| 1168 | err = PTR_ERR(mx3_cam->clk); |
| 1169 | goto eclkget; |
| 1170 | } |
| 1171 | |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 1172 | mx3_cam->pdata = pdev->dev.platform_data; |
| 1173 | mx3_cam->platform_flags = mx3_cam->pdata->flags; |
| 1174 | if (!(mx3_cam->platform_flags & (MX3_CAMERA_DATAWIDTH_4 | |
| 1175 | MX3_CAMERA_DATAWIDTH_8 | MX3_CAMERA_DATAWIDTH_10 | |
| 1176 | MX3_CAMERA_DATAWIDTH_15))) { |
Guennadi Liakhovetski | 5d28d52 | 2009-12-11 11:15:05 -0300 | [diff] [blame] | 1177 | /* |
| 1178 | * Platform hasn't set available data widths. This is bad. |
| 1179 | * Warn and use a default. |
| 1180 | */ |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 1181 | dev_warn(&pdev->dev, "WARNING! Platform hasn't set available " |
| 1182 | "data widths, using default 8 bit\n"); |
| 1183 | mx3_cam->platform_flags |= MX3_CAMERA_DATAWIDTH_8; |
| 1184 | } |
Guennadi Liakhovetski | 579cea0 | 2011-07-27 16:00:29 -0300 | [diff] [blame] | 1185 | if (mx3_cam->platform_flags & MX3_CAMERA_DATAWIDTH_4) |
| 1186 | mx3_cam->width_flags = 1 << 3; |
| 1187 | if (mx3_cam->platform_flags & MX3_CAMERA_DATAWIDTH_8) |
| 1188 | mx3_cam->width_flags |= 1 << 7; |
| 1189 | if (mx3_cam->platform_flags & MX3_CAMERA_DATAWIDTH_10) |
| 1190 | mx3_cam->width_flags |= 1 << 9; |
| 1191 | if (mx3_cam->platform_flags & MX3_CAMERA_DATAWIDTH_15) |
| 1192 | mx3_cam->width_flags |= 1 << 14; |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 1193 | |
| 1194 | mx3_cam->mclk = mx3_cam->pdata->mclk_10khz * 10000; |
| 1195 | if (!mx3_cam->mclk) { |
| 1196 | dev_warn(&pdev->dev, |
| 1197 | "mclk_10khz == 0! Please, fix your platform data. " |
| 1198 | "Using default 20MHz\n"); |
| 1199 | mx3_cam->mclk = 20000000; |
| 1200 | } |
| 1201 | |
| 1202 | /* list of video-buffers */ |
| 1203 | INIT_LIST_HEAD(&mx3_cam->capture); |
| 1204 | spin_lock_init(&mx3_cam->lock); |
| 1205 | |
Guennadi Liakhovetski | 40e2e09 | 2009-08-25 11:28:22 -0300 | [diff] [blame] | 1206 | base = ioremap(res->start, resource_size(res)); |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 1207 | if (!base) { |
Guennadi Liakhovetski | 40e2e09 | 2009-08-25 11:28:22 -0300 | [diff] [blame] | 1208 | 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] | 1209 | err = -ENOMEM; |
| 1210 | goto eioremap; |
| 1211 | } |
| 1212 | |
| 1213 | mx3_cam->base = base; |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 1214 | |
| 1215 | soc_host = &mx3_cam->soc_host; |
| 1216 | soc_host->drv_name = MX3_CAM_DRV_NAME; |
| 1217 | soc_host->ops = &mx3_soc_camera_host_ops; |
| 1218 | soc_host->priv = mx3_cam; |
Guennadi Liakhovetski | 979ea1d | 2009-08-25 11:43:33 -0300 | [diff] [blame] | 1219 | soc_host->v4l2_dev.dev = &pdev->dev; |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 1220 | soc_host->nr = pdev->id; |
Guennadi Liakhovetski | eff505f | 2009-04-24 12:55:48 -0300 | [diff] [blame] | 1221 | |
Guennadi Liakhovetski | 379fa5d | 2011-02-21 07:14:01 -0300 | [diff] [blame] | 1222 | mx3_cam->alloc_ctx = vb2_dma_contig_init_ctx(&pdev->dev); |
| 1223 | if (IS_ERR(mx3_cam->alloc_ctx)) { |
| 1224 | err = PTR_ERR(mx3_cam->alloc_ctx); |
| 1225 | goto eallocctx; |
| 1226 | } |
| 1227 | |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 1228 | err = soc_camera_host_register(soc_host); |
| 1229 | if (err) |
| 1230 | goto ecamhostreg; |
| 1231 | |
| 1232 | /* IDMAC interface */ |
| 1233 | dmaengine_get(); |
| 1234 | |
| 1235 | return 0; |
| 1236 | |
| 1237 | ecamhostreg: |
Guennadi Liakhovetski | 379fa5d | 2011-02-21 07:14:01 -0300 | [diff] [blame] | 1238 | vb2_dma_contig_cleanup_ctx(mx3_cam->alloc_ctx); |
| 1239 | eallocctx: |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 1240 | iounmap(base); |
| 1241 | eioremap: |
| 1242 | clk_put(mx3_cam->clk); |
| 1243 | eclkget: |
| 1244 | vfree(mx3_cam); |
| 1245 | ealloc: |
| 1246 | egetres: |
| 1247 | return err; |
| 1248 | } |
| 1249 | |
| 1250 | static int __devexit mx3_camera_remove(struct platform_device *pdev) |
| 1251 | { |
Guennadi Liakhovetski | eff505f | 2009-04-24 12:55:48 -0300 | [diff] [blame] | 1252 | struct soc_camera_host *soc_host = to_soc_camera_host(&pdev->dev); |
| 1253 | struct mx3_camera_dev *mx3_cam = container_of(soc_host, |
| 1254 | struct mx3_camera_dev, soc_host); |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 1255 | |
| 1256 | clk_put(mx3_cam->clk); |
| 1257 | |
Guennadi Liakhovetski | eff505f | 2009-04-24 12:55:48 -0300 | [diff] [blame] | 1258 | soc_camera_host_unregister(soc_host); |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 1259 | |
| 1260 | iounmap(mx3_cam->base); |
| 1261 | |
| 1262 | /* |
| 1263 | * The channel has either not been allocated, |
| 1264 | * or should have been released |
| 1265 | */ |
| 1266 | if (WARN_ON(mx3_cam->idmac_channel[0])) |
| 1267 | dma_release_channel(&mx3_cam->idmac_channel[0]->dma_chan); |
| 1268 | |
Guennadi Liakhovetski | 379fa5d | 2011-02-21 07:14:01 -0300 | [diff] [blame] | 1269 | vb2_dma_contig_cleanup_ctx(mx3_cam->alloc_ctx); |
| 1270 | |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 1271 | vfree(mx3_cam); |
| 1272 | |
| 1273 | dmaengine_put(); |
| 1274 | |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 1275 | return 0; |
| 1276 | } |
| 1277 | |
| 1278 | static struct platform_driver mx3_camera_driver = { |
| 1279 | .driver = { |
| 1280 | .name = MX3_CAM_DRV_NAME, |
| 1281 | }, |
| 1282 | .probe = mx3_camera_probe, |
Jean Delvare | e36bc31 | 2009-06-04 11:07:16 -0300 | [diff] [blame] | 1283 | .remove = __devexit_p(mx3_camera_remove), |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 1284 | }; |
| 1285 | |
Axel Lin | 1d6629b | 2012-01-10 03:21:49 -0300 | [diff] [blame] | 1286 | module_platform_driver(mx3_camera_driver); |
Guennadi Liakhovetski | 4f67130 | 2009-02-23 12:13:24 -0300 | [diff] [blame] | 1287 | |
| 1288 | MODULE_DESCRIPTION("i.MX3x SoC Camera Host driver"); |
| 1289 | MODULE_AUTHOR("Guennadi Liakhovetski <lg@denx.de>"); |
| 1290 | MODULE_LICENSE("GPL v2"); |
Mauro Carvalho Chehab | 64dc3c1 | 2011-06-25 11:28:37 -0300 | [diff] [blame] | 1291 | MODULE_VERSION("0.2.3"); |
Guennadi Liakhovetski | 40e2e09 | 2009-08-25 11:28:22 -0300 | [diff] [blame] | 1292 | MODULE_ALIAS("platform:" MX3_CAM_DRV_NAME); |