diff options
Diffstat (limited to 'drivers/media/platform/soc_camera/sh_mobile_ceu_camera.c')
-rw-r--r-- | drivers/media/platform/soc_camera/sh_mobile_ceu_camera.c | 642 |
1 files changed, 182 insertions, 460 deletions
diff --git a/drivers/media/platform/soc_camera/sh_mobile_ceu_camera.c b/drivers/media/platform/soc_camera/sh_mobile_ceu_camera.c index 143d29fe0137..f2de0066089a 100644 --- a/drivers/media/platform/soc_camera/sh_mobile_ceu_camera.c +++ b/drivers/media/platform/soc_camera/sh_mobile_ceu_camera.c @@ -27,6 +27,7 @@ #include <linux/kernel.h> #include <linux/mm.h> #include <linux/moduleparam.h> +#include <linux/of.h> #include <linux/time.h> #include <linux/slab.h> #include <linux/device.h> @@ -35,6 +36,7 @@ #include <linux/pm_runtime.h> #include <linux/sched.h> +#include <media/v4l2-async.h> #include <media/v4l2-common.h> #include <media/v4l2-dev.h> #include <media/soc_camera.h> @@ -44,6 +46,8 @@ #include <media/v4l2-mediabus.h> #include <media/soc_mediabus.h> +#include "soc_scale_crop.h" + /* register offsets for sh7722 / sh7723 */ #define CAPSR 0x00 /* Capture start register */ @@ -95,7 +99,10 @@ struct sh_mobile_ceu_buffer { struct sh_mobile_ceu_dev { struct soc_camera_host ici; - struct soc_camera_device *icd; + /* Asynchronous CSI2 linking */ + struct v4l2_async_subdev *csi2_asd; + struct v4l2_subdev *csi2_sd; + /* Synchronous probing compatibility */ struct platform_device *csi2_pdev; unsigned int irq; @@ -119,6 +126,7 @@ struct sh_mobile_ceu_dev { enum v4l2_field field; int sequence; + unsigned long flags; unsigned int image_mode:1; unsigned int is_16bit:1; @@ -163,7 +171,6 @@ static u32 ceu_read(struct sh_mobile_ceu_dev *priv, unsigned long reg_offs) static int sh_mobile_ceu_soft_reset(struct sh_mobile_ceu_dev *pcdev) { int i, success = 0; - struct soc_camera_device *icd = pcdev->icd; ceu_write(pcdev, CAPSR, 1 << 16); /* reset */ @@ -185,9 +192,8 @@ static int sh_mobile_ceu_soft_reset(struct sh_mobile_ceu_dev *pcdev) udelay(1); } - if (2 != success) { - dev_warn(icd->pdev, "soft reset time out\n"); + dev_warn(pcdev->ici.v4l2_dev.dev, "soft reset time out\n"); return -EIO; } @@ -277,7 +283,7 @@ static int sh_mobile_ceu_videobuf_setup(struct vb2_queue *vq, */ static int sh_mobile_ceu_capture(struct sh_mobile_ceu_dev *pcdev) { - struct soc_camera_device *icd = pcdev->icd; + struct soc_camera_device *icd = pcdev->ici.icd; dma_addr_t phys_addr_top, phys_addr_bottom; unsigned long top1, top2; unsigned long bottom1, bottom2; @@ -534,72 +540,92 @@ static struct v4l2_subdev *find_csi2(struct sh_mobile_ceu_dev *pcdev) { struct v4l2_subdev *sd; - if (!pcdev->csi2_pdev) - return NULL; + if (pcdev->csi2_sd) + return pcdev->csi2_sd; - v4l2_device_for_each_subdev(sd, &pcdev->ici.v4l2_dev) - if (&pcdev->csi2_pdev->dev == v4l2_get_subdevdata(sd)) - return sd; + if (pcdev->csi2_asd) { + char name[] = "sh-mobile-csi2"; + v4l2_device_for_each_subdev(sd, &pcdev->ici.v4l2_dev) + if (!strncmp(name, sd->name, sizeof(name) - 1)) { + pcdev->csi2_sd = sd; + return sd; + } + } return NULL; } -/* Called with .host_lock held */ +static struct v4l2_subdev *csi2_subdev(struct sh_mobile_ceu_dev *pcdev, + struct soc_camera_device *icd) +{ + struct v4l2_subdev *sd = pcdev->csi2_sd; + + return sd && sd->grp_id == soc_camera_grp_id(icd) ? sd : NULL; +} + static int sh_mobile_ceu_add_device(struct soc_camera_device *icd) { struct soc_camera_host *ici = to_soc_camera_host(icd->parent); struct sh_mobile_ceu_dev *pcdev = ici->priv; - struct v4l2_subdev *csi2_sd; + struct v4l2_subdev *csi2_sd = find_csi2(pcdev); int ret; - if (pcdev->icd) - return -EBUSY; - - dev_info(icd->parent, - "SuperH Mobile CEU driver attached to camera %d\n", - icd->devnum); - - pm_runtime_get_sync(ici->v4l2_dev.dev); - - pcdev->buf_total = 0; - - ret = sh_mobile_ceu_soft_reset(pcdev); - - csi2_sd = find_csi2(pcdev); if (csi2_sd) { csi2_sd->grp_id = soc_camera_grp_id(icd); v4l2_set_subdev_hostdata(csi2_sd, icd); } ret = v4l2_subdev_call(csi2_sd, core, s_power, 1); - if (ret < 0 && ret != -ENOIOCTLCMD && ret != -ENODEV) { - pm_runtime_put(ici->v4l2_dev.dev); + if (ret < 0 && ret != -ENOIOCTLCMD && ret != -ENODEV) return ret; - } /* * -ENODEV is special: either csi2_sd == NULL or the CSI-2 driver * has not found this soc-camera device among its clients */ - if (ret == -ENODEV && csi2_sd) + if (csi2_sd && ret == -ENODEV) csi2_sd->grp_id = 0; - pcdev->icd = icd; + + dev_info(icd->parent, + "SuperH Mobile CEU%s driver attached to camera %d\n", + csi2_sd && csi2_sd->grp_id ? "/CSI-2" : "", icd->devnum); return 0; } -/* Called with .host_lock held */ static void sh_mobile_ceu_remove_device(struct soc_camera_device *icd) { struct soc_camera_host *ici = to_soc_camera_host(icd->parent); struct sh_mobile_ceu_dev *pcdev = ici->priv; struct v4l2_subdev *csi2_sd = find_csi2(pcdev); - BUG_ON(icd != pcdev->icd); + dev_info(icd->parent, + "SuperH Mobile CEU driver detached from camera %d\n", + icd->devnum); v4l2_subdev_call(csi2_sd, core, s_power, 0); - if (csi2_sd) - csi2_sd->grp_id = 0; +} + +/* Called with .host_lock held */ +static int sh_mobile_ceu_clock_start(struct soc_camera_host *ici) +{ + struct sh_mobile_ceu_dev *pcdev = ici->priv; + int ret; + + pm_runtime_get_sync(ici->v4l2_dev.dev); + + pcdev->buf_total = 0; + + ret = sh_mobile_ceu_soft_reset(pcdev); + + return 0; +} + +/* Called with .host_lock held */ +static void sh_mobile_ceu_clock_stop(struct soc_camera_host *ici) +{ + struct sh_mobile_ceu_dev *pcdev = ici->priv; + /* disable capture, disable interrupts */ ceu_write(pcdev, CEIER, 0); sh_mobile_ceu_soft_reset(pcdev); @@ -614,12 +640,6 @@ static void sh_mobile_ceu_remove_device(struct soc_camera_device *icd) spin_unlock_irq(&pcdev->lock); pm_runtime_put(ici->v4l2_dev.dev); - - dev_info(icd->parent, - "SuperH Mobile CEU driver detached from camera %d\n", - icd->devnum); - - pcdev->icd = NULL; } /* @@ -705,7 +725,7 @@ static void sh_mobile_ceu_set_rect(struct soc_camera_device *icd) } /* CSI2 special configuration */ - if (pcdev->pdata->csi2) { + if (csi2_subdev(pcdev, icd)) { in_width = ((in_width - 2) * 2); left_offset *= 2; } @@ -762,13 +782,7 @@ static void capture_restore(struct sh_mobile_ceu_dev *pcdev, u32 capsr) static struct v4l2_subdev *find_bus_subdev(struct sh_mobile_ceu_dev *pcdev, struct soc_camera_device *icd) { - if (pcdev->csi2_pdev) { - struct v4l2_subdev *csi2_sd = find_csi2(pcdev); - if (csi2_sd && csi2_sd->grp_id == soc_camera_grp_id(icd)) - return csi2_sd; - } - - return soc_camera_to_subdev(icd); + return csi2_subdev(pcdev, icd) ? : soc_camera_to_subdev(icd); } #define CEU_BUS_FLAGS (V4L2_MBUS_MASTER | \ @@ -809,7 +823,7 @@ static int sh_mobile_ceu_set_bus_param(struct soc_camera_device *icd) /* Make choises, based on platform preferences */ if ((common_flags & V4L2_MBUS_HSYNC_ACTIVE_HIGH) && (common_flags & V4L2_MBUS_HSYNC_ACTIVE_LOW)) { - if (pcdev->pdata->flags & SH_CEU_FLAG_HSYNC_LOW) + if (pcdev->flags & SH_CEU_FLAG_HSYNC_LOW) common_flags &= ~V4L2_MBUS_HSYNC_ACTIVE_HIGH; else common_flags &= ~V4L2_MBUS_HSYNC_ACTIVE_LOW; @@ -817,7 +831,7 @@ static int sh_mobile_ceu_set_bus_param(struct soc_camera_device *icd) if ((common_flags & V4L2_MBUS_VSYNC_ACTIVE_HIGH) && (common_flags & V4L2_MBUS_VSYNC_ACTIVE_LOW)) { - if (pcdev->pdata->flags & SH_CEU_FLAG_VSYNC_LOW) + if (pcdev->flags & SH_CEU_FLAG_VSYNC_LOW) common_flags &= ~V4L2_MBUS_VSYNC_ACTIVE_HIGH; else common_flags &= ~V4L2_MBUS_VSYNC_ACTIVE_LOW; @@ -872,11 +886,11 @@ static int sh_mobile_ceu_set_bus_param(struct soc_camera_device *icd) value |= common_flags & V4L2_MBUS_VSYNC_ACTIVE_LOW ? 1 << 1 : 0; value |= common_flags & V4L2_MBUS_HSYNC_ACTIVE_LOW ? 1 << 0 : 0; - if (pcdev->pdata->csi2) /* CSI2 mode */ + if (csi2_subdev(pcdev, icd)) /* CSI2 mode */ value |= 3 << 12; else if (pcdev->is_16bit) value |= 1 << 12; - else if (pcdev->pdata->flags & SH_CEU_FLAG_LOWER_8BIT) + else if (pcdev->flags & SH_CEU_FLAG_LOWER_8BIT) value |= 2 << 12; ceu_write(pcdev, CAMCR, value); @@ -993,8 +1007,6 @@ static bool sh_mobile_ceu_packing_supported(const struct soc_mbus_pixelfmt *fmt) fmt->packing == SOC_MBUS_PACKING_EXTEND16); } -static int client_g_rect(struct v4l2_subdev *sd, struct v4l2_rect *rect); - static struct soc_camera_device *ctrl_to_icd(struct v4l2_ctrl *ctrl) { return container_of(ctrl->handler, struct soc_camera_device, @@ -1051,7 +1063,7 @@ static int sh_mobile_ceu_get_formats(struct soc_camera_device *icd, unsigned int return 0; } - if (!pcdev->pdata->csi2) { + if (!csi2_subdev(pcdev, icd)) { /* Are there any restrictions in the CSI-2 case? */ ret = sh_mobile_ceu_try_bus_param(icd, fmt->bits_per_sample); if (ret < 0) @@ -1072,7 +1084,7 @@ static int sh_mobile_ceu_get_formats(struct soc_camera_device *icd, unsigned int /* FIXME: subwindow is lost between close / open */ /* Cache current client geometry */ - ret = client_g_rect(sd, &rect); + ret = soc_camera_client_g_rect(sd, &rect); if (ret < 0) return ret; @@ -1182,334 +1194,8 @@ static void sh_mobile_ceu_put_formats(struct soc_camera_device *icd) icd->host_priv = NULL; } -/* Check if any dimension of r1 is smaller than respective one of r2 */ -static bool is_smaller(const struct v4l2_rect *r1, const struct v4l2_rect *r2) -{ - return r1->width < r2->width || r1->height < r2->height; -} - -/* Check if r1 fails to cover r2 */ -static bool is_inside(const struct v4l2_rect *r1, const struct v4l2_rect *r2) -{ - return r1->left > r2->left || r1->top > r2->top || - r1->left + r1->width < r2->left + r2->width || - r1->top + r1->height < r2->top + r2->height; -} - -static unsigned int scale_down(unsigned int size, unsigned int scale) -{ - return (size * 4096 + scale / 2) / scale; -} - -static unsigned int calc_generic_scale(unsigned int input, unsigned int output) -{ - return (input * 4096 + output / 2) / output; -} - -/* Get and store current client crop */ -static int client_g_rect(struct v4l2_subdev *sd, struct v4l2_rect *rect) -{ - struct v4l2_crop crop; - struct v4l2_cropcap cap; - int ret; - - crop.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; - - ret = v4l2_subdev_call(sd, video, g_crop, &crop); - if (!ret) { - *rect = crop.c; - return ret; - } - - /* Camera driver doesn't support .g_crop(), assume default rectangle */ - cap.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; - - ret = v4l2_subdev_call(sd, video, cropcap, &cap); - if (!ret) - *rect = cap.defrect; - - return ret; -} - -/* Client crop has changed, update our sub-rectangle to remain within the area */ -static void update_subrect(struct sh_mobile_ceu_cam *cam) -{ - struct v4l2_rect *rect = &cam->rect, *subrect = &cam->subrect; - - if (rect->width < subrect->width) - subrect->width = rect->width; - - if (rect->height < subrect->height) - subrect->height = rect->height; - - if (rect->left > subrect->left) - subrect->left = rect->left; - else if (rect->left + rect->width > - subrect->left + subrect->width) - subrect->left = rect->left + rect->width - - subrect->width; - - if (rect->top > subrect->top) - subrect->top = rect->top; - else if (rect->top + rect->height > - subrect->top + subrect->height) - subrect->top = rect->top + rect->height - - subrect->height; -} - -/* - * The common for both scaling and cropping iterative approach is: - * 1. try if the client can produce exactly what requested by the user - * 2. if (1) failed, try to double the client image until we get one big enough - * 3. if (2) failed, try to request the maximum image - */ -static int client_s_crop(struct soc_camera_device *icd, struct v4l2_crop *crop, - struct v4l2_crop *cam_crop) -{ - struct v4l2_subdev *sd = soc_camera_to_subdev(icd); - struct v4l2_rect *rect = &crop->c, *cam_rect = &cam_crop->c; - struct device *dev = sd->v4l2_dev->dev; - struct sh_mobile_ceu_cam *cam = icd->host_priv; - struct v4l2_cropcap cap; - int ret; - unsigned int width, height; - - v4l2_subdev_call(sd, video, s_crop, crop); - ret = client_g_rect(sd, cam_rect); - if (ret < 0) - return ret; - - /* - * Now cam_crop contains the current camera input rectangle, and it must - * be within camera cropcap bounds - */ - if (!memcmp(rect, cam_rect, sizeof(*rect))) { - /* Even if camera S_CROP failed, but camera rectangle matches */ - dev_dbg(dev, "Camera S_CROP successful for %dx%d@%d:%d\n", - rect->width, rect->height, rect->left, rect->top); - cam->rect = *cam_rect; - return 0; - } - - /* Try to fix cropping, that camera hasn't managed to set */ - dev_geo(dev, "Fix camera S_CROP for %dx%d@%d:%d to %dx%d@%d:%d\n", - cam_rect->width, cam_rect->height, - cam_rect->left, cam_rect->top, - rect->width, rect->height, rect->left, rect->top); - - /* We need sensor maximum rectangle */ - ret = v4l2_subdev_call(sd, video, cropcap, &cap); - if (ret < 0) - return ret; - - /* Put user requested rectangle within sensor bounds */ - soc_camera_limit_side(&rect->left, &rect->width, cap.bounds.left, 2, - cap.bounds.width); - soc_camera_limit_side(&rect->top, &rect->height, cap.bounds.top, 4, - cap.bounds.height); - - /* - * Popular special case - some cameras can only handle fixed sizes like - * QVGA, VGA,... Take care to avoid infinite loop. - */ - width = max(cam_rect->width, 2); - height = max(cam_rect->height, 2); - - /* - * Loop as long as sensor is not covering the requested rectangle and - * is still within its bounds - */ - while (!ret && (is_smaller(cam_rect, rect) || - is_inside(cam_rect, rect)) && - (cap.bounds.width > width || cap.bounds.height > height)) { - - width *= 2; - height *= 2; - - cam_rect->width = width; - cam_rect->height = height; - - /* - * We do not know what capabilities the camera has to set up - * left and top borders. We could try to be smarter in iterating - * them, e.g., if camera current left is to the right of the - * target left, set it to the middle point between the current - * left and minimum left. But that would add too much - * complexity: we would have to iterate each border separately. - * Instead we just drop to the left and top bounds. - */ - if (cam_rect->left > rect->left) - cam_rect->left = cap.bounds.left; - - if (cam_rect->left + cam_rect->width < rect->left + rect->width) - cam_rect->width = rect->left + rect->width - - cam_rect->left; - - if (cam_rect->top > rect->top) - cam_rect->top = cap.bounds.top; - - if (cam_rect->top + cam_rect->height < rect->top + rect->height) - cam_rect->height = rect->top + rect->height - - cam_rect->top; - - v4l2_subdev_call(sd, video, s_crop, cam_crop); - ret = client_g_rect(sd, cam_rect); - dev_geo(dev, "Camera S_CROP %d for %dx%d@%d:%d\n", ret, - cam_rect->width, cam_rect->height, - cam_rect->left, cam_rect->top); - } - - /* S_CROP must not modify the rectangle */ - if (is_smaller(cam_rect, rect) || is_inside(cam_rect, rect)) { - /* - * The camera failed to configure a suitable cropping, - * we cannot use the current rectangle, set to max - */ - *cam_rect = cap.bounds; - v4l2_subdev_call(sd, video, s_crop, cam_crop); - ret = client_g_rect(sd, cam_rect); - dev_geo(dev, "Camera S_CROP %d for max %dx%d@%d:%d\n", ret, - cam_rect->width, cam_rect->height, - cam_rect->left, cam_rect->top); - } - - if (!ret) { - cam->rect = *cam_rect; - update_subrect(cam); - } - - return ret; -} - -/* Iterative s_mbus_fmt, also updates cached client crop on success */ -static int client_s_fmt(struct soc_camera_device *icd, - struct v4l2_mbus_framefmt *mf, bool ceu_can_scale) -{ - struct soc_camera_host *ici = to_soc_camera_host(icd->parent); - struct sh_mobile_ceu_dev *pcdev = ici->priv; - struct sh_mobile_ceu_cam *cam = icd->host_priv; - struct v4l2_subdev *sd = soc_camera_to_subdev(icd); - struct device *dev = icd->parent; - unsigned int width = mf->width, height = mf->height, tmp_w, tmp_h; - unsigned int max_width, max_height; - struct v4l2_cropcap cap; - bool ceu_1to1; - int ret; - - ret = v4l2_device_call_until_err(sd->v4l2_dev, - soc_camera_grp_id(icd), video, - s_mbus_fmt, mf); - if (ret < 0) - return ret; - - dev_geo(dev, "camera scaled to %ux%u\n", mf->width, mf->height); - - if (width == mf->width && height == mf->height) { - /* Perfect! The client has done it all. */ - ceu_1to1 = true; - goto update_cache; - } - - ceu_1to1 = false; - if (!ceu_can_scale) - goto update_cache; - - cap.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; - - ret = v4l2_subdev_call(sd, video, cropcap, &cap); - if (ret < 0) - return ret; - - max_width = min(cap.bounds.width, pcdev->max_width); - max_height = min(cap.bounds.height, pcdev->max_height); - - /* Camera set a format, but geometry is not precise, try to improve */ - tmp_w = mf->width; - tmp_h = mf->height; - - /* width <= max_width && height <= max_height - guaranteed by try_fmt */ - while ((width > tmp_w || height > tmp_h) && - tmp_w < max_width && tmp_h < max_height) { - tmp_w = min(2 * tmp_w, max_width); - tmp_h = min(2 * tmp_h, max_height); - mf->width = tmp_w; - mf->height = tmp_h; - ret = v4l2_device_call_until_err(sd->v4l2_dev, - soc_camera_grp_id(icd), video, - s_mbus_fmt, mf); - dev_geo(dev, "Camera scaled to %ux%u\n", - mf->width, mf->height); - if (ret < 0) { - /* This shouldn't happen */ - dev_err(dev, "Client failed to set format: %d\n", ret); - return ret; - } - } - -update_cache: - /* Update cache */ - ret = client_g_rect(sd, &cam->rect); - if (ret < 0) - return ret; - - if (ceu_1to1) - cam->subrect = cam->rect; - else - update_subrect(cam); - - return 0; -} - -/** - * @width - on output: user width, mapped back to input - * @height - on output: user height, mapped back to input - * @mf - in- / output camera output window - */ -static int client_scale(struct soc_camera_device *icd, - struct v4l2_mbus_framefmt *mf, - unsigned int *width, unsigned int *height, - bool ceu_can_scale) -{ - struct sh_mobile_ceu_cam *cam = icd->host_priv; - struct device *dev = icd->parent; - struct v4l2_mbus_framefmt mf_tmp = *mf; - unsigned int scale_h, scale_v; - int ret; - - /* - * 5. Apply iterative camera S_FMT for camera user window (also updates - * client crop cache and the imaginary sub-rectangle). - */ - ret = client_s_fmt(icd, &mf_tmp, ceu_can_scale); - if (ret < 0) - return ret; - - dev_geo(dev, "5: camera scaled to %ux%u\n", - mf_tmp.width, mf_tmp.height); - - /* 6. Retrieve camera output window (g_fmt) */ - - /* unneeded - it is already in "mf_tmp" */ - - /* 7. Calculate new client scales. */ - scale_h = calc_generic_scale(cam->rect.width, mf_tmp.width); - scale_v = calc_generic_scale(cam->rect.height, mf_tmp.height); - - mf->width = mf_tmp.width; - mf->height = mf_tmp.height; - mf->colorspace = mf_tmp.colorspace; - - /* - * 8. Calculate new CEU crop - apply camera scales to previously - * updated "effective" crop. - */ - *width = scale_down(cam->subrect.width, scale_h); - *height = scale_down(cam->subrect.height, scale_v); - - dev_geo(dev, "8: new client sub-window %ux%u\n", *width, *height); - - return 0; -} +#define scale_down(size, scale) soc_camera_shift_scale(size, 12, scale) +#define calc_generic_scale(in, out) soc_camera_calc_scale(in, 12, out) /* * CEU can scale and crop, but we don't want to waste bandwidth and kill the @@ -1547,7 +1233,8 @@ static int sh_mobile_ceu_set_crop(struct soc_camera_device *icd, * 1. - 2. Apply iterative camera S_CROP for new input window, read back * actual camera rectangle. */ - ret = client_s_crop(icd, &a_writable, &cam_crop); + ret = soc_camera_client_s_crop(sd, &a_writable, &cam_crop, + &cam->rect, &cam->subrect); if (ret < 0) return ret; @@ -1666,55 +1353,6 @@ static int sh_mobile_ceu_get_crop(struct soc_camera_device *icd, return 0; } -/* - * Calculate real client output window by applying new scales to the current - * client crop. New scales are calculated from the requested output format and - * CEU crop, mapped backed onto the client input (subrect). - */ -static void calculate_client_output(struct soc_camera_device *icd, - const struct v4l2_pix_format *pix, struct v4l2_mbus_framefmt *mf) -{ - struct sh_mobile_ceu_cam *cam = icd->host_priv; - struct device *dev = icd->parent; - struct v4l2_rect *cam_subrect = &cam->subrect; - unsigned int scale_v, scale_h; - - if (cam_subrect->width == cam->rect.width && - cam_subrect->height == cam->rect.height) { - /* No sub-cropping */ - mf->width = pix->width; - mf->height = pix->height; - return; - } - - /* 1.-2. Current camera scales and subwin - cached. */ - - dev_geo(dev, "2: subwin %ux%u@%u:%u\n", - cam_subrect->width, cam_subrect->height, - cam_subrect->left, cam_subrect->top); - - /* - * 3. Calculate new combined scales from input sub-window to requested - * user window. - */ - - /* - * TODO: CEU cannot scale images larger than VGA to smaller than SubQCIF - * (128x96) or larger than VGA - */ - scale_h = calc_generic_scale(cam_subrect->width, pix->width); - scale_v = calc_generic_scale(cam_subrect->height, pix->height); - - dev_geo(dev, "3: scales %u:%u\n", scale_h, scale_v); - - /* - * 4. Calculate desired client output window by applying combined scales - * to client (real) input window. - */ - mf->width = scale_down(cam->rect.width, scale_h); - mf->height = scale_down(cam->rect.height, scale_v); -} - /* Similar to set_crop multistage iterative algorithm */ static int sh_mobile_ceu_set_fmt(struct soc_camera_device *icd, struct v4l2_format *f) @@ -1727,8 +1365,8 @@ static int sh_mobile_ceu_set_fmt(struct soc_camera_device *icd, struct v4l2_mbus_framefmt mf; __u32 pixfmt = pix->pixelformat; const struct soc_camera_format_xlate *xlate; - /* Keep Compiler Happy */ - unsigned int ceu_sub_width = 0, ceu_sub_height = 0; + unsigned int ceu_sub_width = pcdev->max_width, + ceu_sub_height = pcdev->max_height; u16 scale_v, scale_h; int ret; bool image_mode; @@ -1755,7 +1393,7 @@ static int sh_mobile_ceu_set_fmt(struct soc_camera_device *icd, } /* 1.-4. Calculate desired client output geometry */ - calculate_client_output(icd, pix, &mf); + soc_camera_calc_client_output(icd, &cam->rect, &cam->subrect, pix, &mf, 12); mf.field = pix->field; mf.colorspace = pix->colorspace; mf.code = xlate->code; @@ -1777,8 +1415,9 @@ static int sh_mobile_ceu_set_fmt(struct soc_camera_device *icd, dev_geo(dev, "4: request camera output %ux%u\n", mf.width, mf.height); /* 5. - 9. */ - ret = client_scale(icd, &mf, &ceu_sub_width, &ceu_sub_height, - image_mode && V4L2_FIELD_NONE == field); + ret = soc_camera_client_scale(icd, &cam->rect, &cam->subrect, + &mf, &ceu_sub_width, &ceu_sub_height, + image_mode && V4L2_FIELD_NONE == field, 12); dev_geo(dev, "5-9: client scale return %d\n", ret); @@ -2036,6 +1675,8 @@ static struct soc_camera_host_ops sh_mobile_ceu_host_ops = { .owner = THIS_MODULE, .add = sh_mobile_ceu_add_device, .remove = sh_mobile_ceu_remove_device, + .clock_start = sh_mobile_ceu_clock_start, + .clock_stop = sh_mobile_ceu_clock_stop, .get_formats = sh_mobile_ceu_get_formats, .put_formats = sh_mobile_ceu_put_formats, .get_crop = sh_mobile_ceu_get_crop, @@ -2079,7 +1720,7 @@ static int sh_mobile_ceu_probe(struct platform_device *pdev) struct resource *res; void __iomem *base; unsigned int irq; - int err = 0; + int err, i; struct bus_wait wait = { .completion = COMPLETION_INITIALIZER_ONSTACK(wait.completion), .notifier.notifier_call = bus_notify, @@ -2104,13 +1745,36 @@ static int sh_mobile_ceu_probe(struct platform_device *pdev) init_completion(&pcdev->complete); pcdev->pdata = pdev->dev.platform_data; - if (!pcdev->pdata) { + if (!pcdev->pdata && !pdev->dev.of_node) { dev_err(&pdev->dev, "CEU platform data not set.\n"); return -EINVAL; } - pcdev->max_width = pcdev->pdata->max_width ? : 2560; - pcdev->max_height = pcdev->pdata->max_height ? : 1920; + /* TODO: implement per-device bus flags */ + if (pcdev->pdata) { + pcdev->max_width = pcdev->pdata->max_width; + pcdev->max_height = pcdev->pdata->max_height; + pcdev->flags = pcdev->pdata->flags; + } + + if (!pcdev->max_width) { + unsigned int v; + err = of_property_read_u32(pdev->dev.of_node, "renesas,max-width", &v); + if (!err) + pcdev->max_width = v; + + if (!pcdev->max_width) + pcdev->max_width = 2560; + } + if (!pcdev->max_height) { + unsigned int v; + err = of_property_read_u32(pdev->dev.of_node, "renesas,max-height", &v); + if (!err) + pcdev->max_height = v; + + if (!pcdev->max_height) + pcdev->max_height = 1920; + } base = devm_ioremap_resource(&pdev->dev, res); if (IS_ERR(base)) @@ -2160,31 +1824,60 @@ static int sh_mobile_ceu_probe(struct platform_device *pdev) goto exit_free_clk; } - err = soc_camera_host_register(&pcdev->ici); - if (err) - goto exit_free_ctx; + if (pcdev->pdata && pcdev->pdata->asd_sizes) { + struct v4l2_async_subdev **asd; + char name[] = "sh-mobile-csi2"; + int j; + + /* + * CSI2 interfacing: several groups can use CSI2, pick up the + * first one + */ + asd = pcdev->pdata->asd; + for (j = 0; pcdev->pdata->asd_sizes[j]; j++) { + for (i = 0; i < pcdev->pdata->asd_sizes[j]; i++, asd++) { + dev_dbg(&pdev->dev, "%s(): subdev #%d, type %u\n", + __func__, i, (*asd)->bus_type); + if ((*asd)->bus_type == V4L2_ASYNC_BUS_PLATFORM && + !strncmp(name, (*asd)->match.platform.name, + sizeof(name) - 1)) { + pcdev->csi2_asd = *asd; + break; + } + } + if (pcdev->csi2_asd) + break; + } - /* CSI2 interfacing */ - csi2 = pcdev->pdata->csi2; + pcdev->ici.asd = pcdev->pdata->asd; + pcdev->ici.asd_sizes = pcdev->pdata->asd_sizes; + } + + /* Legacy CSI2 interfacing */ + csi2 = pcdev->pdata ? pcdev->pdata->csi2 : NULL; if (csi2) { + /* + * TODO: remove this once all users are converted to + * asynchronous CSI2 probing. If it has to be kept, csi2 + * platform device resources have to be added, using + * platform_device_add_resources() + */ struct platform_device *csi2_pdev = platform_device_alloc("sh-mobile-csi2", csi2->id); struct sh_csi2_pdata *csi2_pdata = csi2->platform_data; if (!csi2_pdev) { err = -ENOMEM; - goto exit_host_unregister; + goto exit_free_ctx; } pcdev->csi2_pdev = csi2_pdev; - err = platform_device_add_data(csi2_pdev, csi2_pdata, sizeof(*csi2_pdata)); + err = platform_device_add_data(csi2_pdev, csi2_pdata, + sizeof(*csi2_pdata)); if (err < 0) goto exit_pdev_put; - csi2_pdata = csi2_pdev->dev.platform_data; - csi2_pdata->v4l2_dev = &pcdev->ici.v4l2_dev; - csi2_pdev->resource = csi2->resource; csi2_pdev->num_resources = csi2->num_resources; @@ -2226,17 +1919,38 @@ static int sh_mobile_ceu_probe(struct platform_device *pdev) err = -ENODEV; goto exit_pdev_unregister; } + + pcdev->csi2_sd = platform_get_drvdata(csi2_pdev); + } + + err = soc_camera_host_register(&pcdev->ici); + if (err) + goto exit_csi2_unregister; + + if (csi2) { + err = v4l2_device_register_subdev(&pcdev->ici.v4l2_dev, + pcdev->csi2_sd); + dev_dbg(&pdev->dev, "%s(): ret(register_subdev) = %d\n", + __func__, err); + if (err < 0) + goto exit_host_unregister; + /* v4l2_device_register_subdev() took a reference too */ + module_put(pcdev->csi2_sd->owner); } return 0; -exit_pdev_unregister: - platform_device_del(pcdev->csi2_pdev); -exit_pdev_put: - pcdev->csi2_pdev->resource = NULL; - platform_device_put(pcdev->csi2_pdev); exit_host_unregister: soc_camera_host_unregister(&pcdev->ici); +exit_csi2_unregister: + if (csi2) { + module_put(pcdev->csi2_pdev->dev.driver->owner); +exit_pdev_unregister: + platform_device_del(pcdev->csi2_pdev); +exit_pdev_put: + pcdev->csi2_pdev->resource = NULL; + platform_device_put(pcdev->csi2_pdev); + } exit_free_ctx: vb2_dma_contig_cleanup_ctx(pcdev->alloc_ctx); exit_free_clk: @@ -2287,10 +2001,18 @@ static const struct dev_pm_ops sh_mobile_ceu_dev_pm_ops = { .runtime_resume = sh_mobile_ceu_runtime_nop, }; +static const struct of_device_id sh_mobile_ceu_of_match[] = { + { .compatible = "renesas,sh-mobile-ceu" }, + { } +}; +MODULE_DEVICE_TABLE(of, sh_mobile_ceu_of_match); + static struct platform_driver sh_mobile_ceu_driver = { .driver = { .name = "sh_mobile_ceu", + .owner = THIS_MODULE, .pm = &sh_mobile_ceu_dev_pm_ops, + .of_match_table = sh_mobile_ceu_of_match, }, .probe = sh_mobile_ceu_probe, .remove = sh_mobile_ceu_remove, @@ -2314,5 +2036,5 @@ module_exit(sh_mobile_ceu_exit); MODULE_DESCRIPTION("SuperH Mobile CEU driver"); MODULE_AUTHOR("Magnus Damm"); MODULE_LICENSE("GPL"); -MODULE_VERSION("0.0.6"); +MODULE_VERSION("0.1.0"); MODULE_ALIAS("platform:sh_mobile_ceu"); |