diff options
Diffstat (limited to 'drivers/media/video/mx3_camera.c')
| -rw-r--r-- | drivers/media/video/mx3_camera.c | 197 |
1 files changed, 89 insertions, 108 deletions
diff --git a/drivers/media/video/mx3_camera.c b/drivers/media/video/mx3_camera.c index c8e958a07e91..f4ef6b993ff1 100644 --- a/drivers/media/video/mx3_camera.c +++ b/drivers/media/video/mx3_camera.c @@ -109,6 +109,7 @@ struct mx3_camera_dev { unsigned long platform_flags; unsigned long mclk; + u16 width_flags; /* max 15 bits */ struct list_head capture; spinlock_t lock; /* Protects video buffer lists */ @@ -548,58 +549,27 @@ static int test_platform_param(struct mx3_camera_dev *mx3_cam, unsigned char buswidth, unsigned long *flags) { /* + * If requested data width is supported by the platform, use it or any + * possible lower value - i.MX31 is smart enough to shift bits + */ + if (buswidth > fls(mx3_cam->width_flags)) + return -EINVAL; + + /* * Platform specified synchronization and pixel clock polarities are * only a recommendation and are only used during probing. MX3x * camera interface only works in master mode, i.e., uses HSYNC and * VSYNC signals from the sensor */ - *flags = SOCAM_MASTER | - SOCAM_HSYNC_ACTIVE_HIGH | - SOCAM_HSYNC_ACTIVE_LOW | - SOCAM_VSYNC_ACTIVE_HIGH | - SOCAM_VSYNC_ACTIVE_LOW | - SOCAM_PCLK_SAMPLE_RISING | - SOCAM_PCLK_SAMPLE_FALLING | - SOCAM_DATA_ACTIVE_HIGH | - SOCAM_DATA_ACTIVE_LOW; - - /* - * If requested data width is supported by the platform, use it or any - * possible lower value - i.MX31 is smart enough to schift bits - */ - if (mx3_cam->platform_flags & MX3_CAMERA_DATAWIDTH_15) - *flags |= SOCAM_DATAWIDTH_15 | SOCAM_DATAWIDTH_10 | - SOCAM_DATAWIDTH_8 | SOCAM_DATAWIDTH_4; - else if (mx3_cam->platform_flags & MX3_CAMERA_DATAWIDTH_10) - *flags |= SOCAM_DATAWIDTH_10 | SOCAM_DATAWIDTH_8 | - SOCAM_DATAWIDTH_4; - else if (mx3_cam->platform_flags & MX3_CAMERA_DATAWIDTH_8) - *flags |= SOCAM_DATAWIDTH_8 | SOCAM_DATAWIDTH_4; - else if (mx3_cam->platform_flags & MX3_CAMERA_DATAWIDTH_4) - *flags |= SOCAM_DATAWIDTH_4; - - switch (buswidth) { - case 15: - if (!(*flags & SOCAM_DATAWIDTH_15)) - return -EINVAL; - break; - case 10: - if (!(*flags & SOCAM_DATAWIDTH_10)) - return -EINVAL; - break; - case 8: - if (!(*flags & SOCAM_DATAWIDTH_8)) - return -EINVAL; - break; - case 4: - if (!(*flags & SOCAM_DATAWIDTH_4)) - return -EINVAL; - break; - default: - dev_warn(mx3_cam->soc_host.v4l2_dev.dev, - "Unsupported bus width %d\n", buswidth); - return -EINVAL; - } + *flags = V4L2_MBUS_MASTER | + V4L2_MBUS_HSYNC_ACTIVE_HIGH | + V4L2_MBUS_HSYNC_ACTIVE_LOW | + V4L2_MBUS_VSYNC_ACTIVE_HIGH | + V4L2_MBUS_VSYNC_ACTIVE_LOW | + V4L2_MBUS_PCLK_SAMPLE_RISING | + V4L2_MBUS_PCLK_SAMPLE_FALLING | + V4L2_MBUS_DATA_ACTIVE_HIGH | + V4L2_MBUS_DATA_ACTIVE_LOW; return 0; } @@ -607,9 +577,11 @@ static int test_platform_param(struct mx3_camera_dev *mx3_cam, static int mx3_camera_try_bus_param(struct soc_camera_device *icd, const unsigned int depth) { + struct v4l2_subdev *sd = soc_camera_to_subdev(icd); struct soc_camera_host *ici = to_soc_camera_host(icd->parent); struct mx3_camera_dev *mx3_cam = ici->priv; - unsigned long bus_flags, camera_flags; + struct v4l2_mbus_config cfg = {.type = V4L2_MBUS_PARALLEL,}; + unsigned long bus_flags, common_flags; int ret = test_platform_param(mx3_cam, depth, &bus_flags); dev_dbg(icd->parent, "request bus width %d bit: %d\n", depth, ret); @@ -617,15 +589,21 @@ static int mx3_camera_try_bus_param(struct soc_camera_device *icd, if (ret < 0) return ret; - camera_flags = icd->ops->query_bus_param(icd); - - ret = soc_camera_bus_param_compatible(camera_flags, bus_flags); - if (ret < 0) - dev_warn(icd->parent, - "Flags incompatible: camera %lx, host %lx\n", - camera_flags, bus_flags); + ret = v4l2_subdev_call(sd, video, g_mbus_config, &cfg); + if (!ret) { + common_flags = soc_mbus_config_compatible(&cfg, + bus_flags); + if (!common_flags) { + dev_warn(icd->parent, + "Flags incompatible: camera 0x%x, host 0x%lx\n", + cfg.flags, bus_flags); + return -EINVAL; + } + } else if (ret != -ENOIOCTLCMD) { + return ret; + } - return ret; + return 0; } static bool chan_filter(struct dma_chan *chan, void *arg) @@ -994,9 +972,11 @@ static int mx3_camera_querycap(struct soc_camera_host *ici, static int mx3_camera_set_bus_param(struct soc_camera_device *icd, __u32 pixfmt) { + struct v4l2_subdev *sd = soc_camera_to_subdev(icd); struct soc_camera_host *ici = to_soc_camera_host(icd->parent); struct mx3_camera_dev *mx3_cam = ici->priv; - unsigned long bus_flags, camera_flags, common_flags; + struct v4l2_mbus_config cfg = {.type = V4L2_MBUS_PARALLEL,}; + unsigned long bus_flags, common_flags; u32 dw, sens_conf; const struct soc_mbus_pixelfmt *fmt; int buswidth; @@ -1008,83 +988,76 @@ static int mx3_camera_set_bus_param(struct soc_camera_device *icd, __u32 pixfmt) if (!fmt) return -EINVAL; - buswidth = fmt->bits_per_sample; - ret = test_platform_param(mx3_cam, buswidth, &bus_flags); - xlate = soc_camera_xlate_by_fourcc(icd, pixfmt); if (!xlate) { dev_warn(dev, "Format %x not found\n", pixfmt); return -EINVAL; } + buswidth = fmt->bits_per_sample; + ret = test_platform_param(mx3_cam, buswidth, &bus_flags); + dev_dbg(dev, "requested bus width %d bit: %d\n", buswidth, ret); if (ret < 0) return ret; - camera_flags = icd->ops->query_bus_param(icd); - - common_flags = soc_camera_bus_param_compatible(camera_flags, bus_flags); - dev_dbg(dev, "Flags cam: 0x%lx host: 0x%lx common: 0x%lx\n", - camera_flags, bus_flags, common_flags); - if (!common_flags) { - dev_dbg(dev, "no common flags"); - return -EINVAL; + ret = v4l2_subdev_call(sd, video, g_mbus_config, &cfg); + if (!ret) { + common_flags = soc_mbus_config_compatible(&cfg, + bus_flags); + if (!common_flags) { + dev_warn(icd->parent, + "Flags incompatible: camera 0x%x, host 0x%lx\n", + cfg.flags, bus_flags); + return -EINVAL; + } + } else if (ret != -ENOIOCTLCMD) { + return ret; + } else { + common_flags = bus_flags; } + dev_dbg(dev, "Flags cam: 0x%x host: 0x%lx common: 0x%lx\n", + cfg.flags, bus_flags, common_flags); + /* Make choices, based on platform preferences */ - if ((common_flags & SOCAM_HSYNC_ACTIVE_HIGH) && - (common_flags & SOCAM_HSYNC_ACTIVE_LOW)) { + if ((common_flags & V4L2_MBUS_HSYNC_ACTIVE_HIGH) && + (common_flags & V4L2_MBUS_HSYNC_ACTIVE_LOW)) { if (mx3_cam->platform_flags & MX3_CAMERA_HSP) - common_flags &= ~SOCAM_HSYNC_ACTIVE_HIGH; + common_flags &= ~V4L2_MBUS_HSYNC_ACTIVE_HIGH; else - common_flags &= ~SOCAM_HSYNC_ACTIVE_LOW; + common_flags &= ~V4L2_MBUS_HSYNC_ACTIVE_LOW; } - if ((common_flags & SOCAM_VSYNC_ACTIVE_HIGH) && - (common_flags & SOCAM_VSYNC_ACTIVE_LOW)) { + if ((common_flags & V4L2_MBUS_VSYNC_ACTIVE_HIGH) && + (common_flags & V4L2_MBUS_VSYNC_ACTIVE_LOW)) { if (mx3_cam->platform_flags & MX3_CAMERA_VSP) - common_flags &= ~SOCAM_VSYNC_ACTIVE_HIGH; + common_flags &= ~V4L2_MBUS_VSYNC_ACTIVE_HIGH; else - common_flags &= ~SOCAM_VSYNC_ACTIVE_LOW; + common_flags &= ~V4L2_MBUS_VSYNC_ACTIVE_LOW; } - if ((common_flags & SOCAM_DATA_ACTIVE_HIGH) && - (common_flags & SOCAM_DATA_ACTIVE_LOW)) { + if ((common_flags & V4L2_MBUS_DATA_ACTIVE_HIGH) && + (common_flags & V4L2_MBUS_DATA_ACTIVE_LOW)) { if (mx3_cam->platform_flags & MX3_CAMERA_DP) - common_flags &= ~SOCAM_DATA_ACTIVE_HIGH; + common_flags &= ~V4L2_MBUS_DATA_ACTIVE_HIGH; else - common_flags &= ~SOCAM_DATA_ACTIVE_LOW; + common_flags &= ~V4L2_MBUS_DATA_ACTIVE_LOW; } - if ((common_flags & SOCAM_PCLK_SAMPLE_RISING) && - (common_flags & SOCAM_PCLK_SAMPLE_FALLING)) { + if ((common_flags & V4L2_MBUS_PCLK_SAMPLE_RISING) && + (common_flags & V4L2_MBUS_PCLK_SAMPLE_FALLING)) { if (mx3_cam->platform_flags & MX3_CAMERA_PCP) - common_flags &= ~SOCAM_PCLK_SAMPLE_RISING; + common_flags &= ~V4L2_MBUS_PCLK_SAMPLE_RISING; else - common_flags &= ~SOCAM_PCLK_SAMPLE_FALLING; + common_flags &= ~V4L2_MBUS_PCLK_SAMPLE_FALLING; } - /* - * Make the camera work in widest common mode, we'll take care of - * the rest - */ - if (common_flags & SOCAM_DATAWIDTH_15) - common_flags = (common_flags & ~SOCAM_DATAWIDTH_MASK) | - SOCAM_DATAWIDTH_15; - else if (common_flags & SOCAM_DATAWIDTH_10) - common_flags = (common_flags & ~SOCAM_DATAWIDTH_MASK) | - SOCAM_DATAWIDTH_10; - else if (common_flags & SOCAM_DATAWIDTH_8) - common_flags = (common_flags & ~SOCAM_DATAWIDTH_MASK) | - SOCAM_DATAWIDTH_8; - else - common_flags = (common_flags & ~SOCAM_DATAWIDTH_MASK) | - SOCAM_DATAWIDTH_4; - - ret = icd->ops->set_bus_param(icd, common_flags); - if (ret < 0) { - dev_dbg(dev, "camera set_bus_param(%lx) returned %d\n", + cfg.flags = common_flags; + ret = v4l2_subdev_call(sd, video, s_mbus_config, &cfg); + if (ret < 0 && ret != -ENOIOCTLCMD) { + dev_dbg(dev, "camera s_mbus_config(0x%lx) returned %d\n", common_flags, ret); return ret; } @@ -1108,13 +1081,13 @@ static int mx3_camera_set_bus_param(struct soc_camera_device *icd, __u32 pixfmt) /* This has been set in mx3_camera_activate(), but we clear it above */ sens_conf |= CSI_SENS_CONF_DATA_FMT_BAYER; - if (common_flags & SOCAM_PCLK_SAMPLE_FALLING) + if (common_flags & V4L2_MBUS_PCLK_SAMPLE_FALLING) sens_conf |= 1 << CSI_SENS_CONF_PIX_CLK_POL_SHIFT; - if (common_flags & SOCAM_HSYNC_ACTIVE_LOW) + if (common_flags & V4L2_MBUS_HSYNC_ACTIVE_LOW) sens_conf |= 1 << CSI_SENS_CONF_HSYNC_POL_SHIFT; - if (common_flags & SOCAM_VSYNC_ACTIVE_LOW) + if (common_flags & V4L2_MBUS_VSYNC_ACTIVE_LOW) sens_conf |= 1 << CSI_SENS_CONF_VSYNC_POL_SHIFT; - if (common_flags & SOCAM_DATA_ACTIVE_LOW) + if (common_flags & V4L2_MBUS_DATA_ACTIVE_LOW) sens_conf |= 1 << CSI_SENS_CONF_DATA_POL_SHIFT; /* Just do what we're asked to do */ @@ -1199,6 +1172,14 @@ static int __devinit mx3_camera_probe(struct platform_device *pdev) "data widths, using default 8 bit\n"); mx3_cam->platform_flags |= MX3_CAMERA_DATAWIDTH_8; } + if (mx3_cam->platform_flags & MX3_CAMERA_DATAWIDTH_4) + mx3_cam->width_flags = 1 << 3; + if (mx3_cam->platform_flags & MX3_CAMERA_DATAWIDTH_8) + mx3_cam->width_flags |= 1 << 7; + if (mx3_cam->platform_flags & MX3_CAMERA_DATAWIDTH_10) + mx3_cam->width_flags |= 1 << 9; + if (mx3_cam->platform_flags & MX3_CAMERA_DATAWIDTH_15) + mx3_cam->width_flags |= 1 << 14; mx3_cam->mclk = mx3_cam->pdata->mclk_10khz * 10000; if (!mx3_cam->mclk) { |