| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Guennadi Liakhovetski | 5087 | 61.75% | 52 | 44.83% |
| Magnus Damm | 1822 | 22.12% | 10 | 8.62% |
| Kuninori Morimoto | 525 | 6.37% | 8 | 6.90% |
| Hans Verkuil | 493 | 5.98% | 15 | 12.93% |
| Laurent Pinchart | 89 | 1.08% | 4 | 3.45% |
| Junghak Sung | 74 | 0.90% | 2 | 1.72% |
| Jacopo Mondi | 32 | 0.39% | 1 | 0.86% |
| Lad Prabhakar | 23 | 0.28% | 1 | 0.86% |
| Trent Piepho | 16 | 0.19% | 1 | 0.86% |
| Mauro Carvalho Chehab | 10 | 0.12% | 4 | 3.45% |
| Kay Sievers | 10 | 0.12% | 1 | 0.86% |
| Sachin Kamat | 10 | 0.12% | 1 | 0.86% |
| Boris Brezillon | 9 | 0.11% | 1 | 0.86% |
| Andreas Bombe | 8 | 0.10% | 1 | 0.86% |
| Geliang Tang | 7 | 0.08% | 2 | 1.72% |
| Uwe Kleine-König | 5 | 0.06% | 1 | 0.86% |
| Kamil Debski | 5 | 0.06% | 1 | 0.86% |
| Marek Szyprowski | 3 | 0.04% | 2 | 1.72% |
| Tejun Heo | 3 | 0.04% | 1 | 0.86% |
| Christoph Hellwig | 1 | 0.01% | 1 | 0.86% |
| Al Viro | 1 | 0.01% | 1 | 0.86% |
| Julia Lawall | 1 | 0.01% | 1 | 0.86% |
| Pawel Osciak | 1 | 0.01% | 1 | 0.86% |
| Alexey Dobriyan | 1 | 0.01% | 1 | 0.86% |
| Michael Opdenacker | 1 | 0.01% | 1 | 0.86% |
| Sakari Ailus | 1 | 0.01% | 1 | 0.86% |
| Total | 8238 | 116 |
// SPDX-License-Identifier: GPL-2.0+ /* * V4L2 Driver for SuperH Mobile CEU interface * * Copyright (C) 2008 Magnus Damm * * Based on V4L2 Driver for PXA camera host - "pxa_camera.c", * * Copyright (C) 2006, Sascha Hauer, Pengutronix * Copyright (C) 2008, Guennadi Liakhovetski <kernel@pengutronix.de> */ #include <linux/init.h> #include <linux/module.h> #include <linux/io.h> #include <linux/completion.h> #include <linux/delay.h> #include <linux/dma-mapping.h> #include <linux/err.h> #include <linux/errno.h> #include <linux/fs.h> #include <linux/interrupt.h> #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> #include <linux/platform_device.h> #include <linux/videodev2.h> #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> #include <media/drv-intf/sh_mobile_ceu.h> #include <media/videobuf2-dma-contig.h> #include <media/v4l2-mediabus.h> #include <media/drv-intf/soc_mediabus.h> #include "soc_scale_crop.h" /* register offsets for sh7722 / sh7723 */ #define CAPSR 0x00 /* Capture start register */ #define CAPCR 0x04 /* Capture control register */ #define CAMCR 0x08 /* Capture interface control register */ #define CMCYR 0x0c /* Capture interface cycle register */ #define CAMOR 0x10 /* Capture interface offset register */ #define CAPWR 0x14 /* Capture interface width register */ #define CAIFR 0x18 /* Capture interface input format register */ #define CSTCR 0x20 /* Camera strobe control register (<= sh7722) */ #define CSECR 0x24 /* Camera strobe emission count register (<= sh7722) */ #define CRCNTR 0x28 /* CEU register control register */ #define CRCMPR 0x2c /* CEU register forcible control register */ #define CFLCR 0x30 /* Capture filter control register */ #define CFSZR 0x34 /* Capture filter size clip register */ #define CDWDR 0x38 /* Capture destination width register */ #define CDAYR 0x3c /* Capture data address Y register */ #define CDACR 0x40 /* Capture data address C register */ #define CDBYR 0x44 /* Capture data bottom-field address Y register */ #define CDBCR 0x48 /* Capture data bottom-field address C register */ #define CBDSR 0x4c /* Capture bundle destination size register */ #define CFWCR 0x5c /* Firewall operation control register */ #define CLFCR 0x60 /* Capture low-pass filter control register */ #define CDOCR 0x64 /* Capture data output control register */ #define CDDCR 0x68 /* Capture data complexity level register */ #define CDDAR 0x6c /* Capture data complexity level address register */ #define CEIER 0x70 /* Capture event interrupt enable register */ #define CETCR 0x74 /* Capture event flag clear register */ #define CSTSR 0x7c /* Capture status register */ #define CSRTR 0x80 /* Capture software reset register */ #define CDSSR 0x84 /* Capture data size register */ #define CDAYR2 0x90 /* Capture data address Y register 2 */ #define CDACR2 0x94 /* Capture data address C register 2 */ #define CDBYR2 0x98 /* Capture data bottom-field address Y register 2 */ #define CDBCR2 0x9c /* Capture data bottom-field address C register 2 */ #undef DEBUG_GEOMETRY #ifdef DEBUG_GEOMETRY #define dev_geo dev_info #else #define dev_geo dev_dbg #endif /* per video frame buffer */ struct sh_mobile_ceu_buffer { struct vb2_v4l2_buffer vb; /* v4l buffer must be first */ struct list_head queue; }; struct sh_mobile_ceu_dev { struct soc_camera_host ici; unsigned int irq; void __iomem *base; size_t video_limit; size_t buf_total; spinlock_t lock; /* Protects video buffer lists */ struct list_head capture; struct vb2_v4l2_buffer *active; struct sh_mobile_ceu_info *pdata; struct completion complete; u32 cflcr; /* static max sizes either from platform data or default */ int max_width; int max_height; enum v4l2_field field; int sequence; unsigned long flags; unsigned int image_mode:1; unsigned int is_16bit:1; unsigned int frozen:1; }; struct sh_mobile_ceu_cam { /* CEU offsets within the camera output, before the CEU scaler */ unsigned int ceu_left; unsigned int ceu_top; /* Client output, as seen by the CEU */ unsigned int width; unsigned int height; /* * User window from S_SELECTION / G_SELECTION, produced by client cropping and * scaling, CEU scaling and CEU cropping, mapped back onto the client * input window */ struct v4l2_rect subrect; /* Camera cropping rectangle */ struct v4l2_rect rect; const struct soc_mbus_pixelfmt *extra_fmt; u32 code; }; static struct sh_mobile_ceu_buffer *to_ceu_vb(struct vb2_v4l2_buffer *vbuf) { return container_of(vbuf, struct sh_mobile_ceu_buffer, vb); } static void ceu_write(struct sh_mobile_ceu_dev *priv, unsigned long reg_offs, u32 data) { iowrite32(data, priv->base + reg_offs); } static u32 ceu_read(struct sh_mobile_ceu_dev *priv, unsigned long reg_offs) { return ioread32(priv->base + reg_offs); } static int sh_mobile_ceu_soft_reset(struct sh_mobile_ceu_dev *pcdev) { int i, success = 0; ceu_write(pcdev, CAPSR, 1 << 16); /* reset */ /* wait CSTSR.CPTON bit */ for (i = 0; i < 1000; i++) { if (!(ceu_read(pcdev, CSTSR) & 1)) { success++; break; } udelay(1); } /* wait CAPSR.CPKIL bit */ for (i = 0; i < 1000; i++) { if (!(ceu_read(pcdev, CAPSR) & (1 << 16))) { success++; break; } udelay(1); } if (2 != success) { dev_warn(pcdev->ici.v4l2_dev.dev, "soft reset time out\n"); return -EIO; } return 0; } /* * Videobuf operations */ /* * .queue_setup() is called to check, whether the driver can accept the * requested number of buffers and to fill in plane sizes * for the current frame format if required */ static int sh_mobile_ceu_videobuf_setup(struct vb2_queue *vq, unsigned int *count, unsigned int *num_planes, unsigned int sizes[], struct device *alloc_devs[]) { struct soc_camera_device *icd = soc_camera_from_vb2q(vq); struct soc_camera_host *ici = to_soc_camera_host(icd->parent); struct sh_mobile_ceu_dev *pcdev = ici->priv; if (!vq->num_buffers) pcdev->sequence = 0; if (!*count) *count = 2; /* Called from VIDIOC_REQBUFS or in compatibility mode */ if (!*num_planes) sizes[0] = icd->sizeimage; else if (sizes[0] < icd->sizeimage) return -EINVAL; /* If *num_planes != 0, we have already verified *count. */ if (pcdev->video_limit) { size_t size = PAGE_ALIGN(sizes[0]) * *count; if (size + pcdev->buf_total > pcdev->video_limit) *count = (pcdev->video_limit - pcdev->buf_total) / PAGE_ALIGN(sizes[0]); } *num_planes = 1; dev_dbg(icd->parent, "count=%d, size=%u\n", *count, sizes[0]); return 0; } #define CEU_CETCR_MAGIC 0x0317f313 /* acknowledge magical interrupt sources */ #define CEU_CETCR_IGRW (1 << 4) /* prohibited register access interrupt bit */ #define CEU_CEIER_CPEIE (1 << 0) /* one-frame capture end interrupt */ #define CEU_CEIER_VBP (1 << 20) /* vbp error */ #define CEU_CAPCR_CTNCP (1 << 16) /* continuous capture mode (if set) */ #define CEU_CEIER_MASK (CEU_CEIER_CPEIE | CEU_CEIER_VBP) /* * return value doesn't reflex the success/failure to queue the new buffer, * but rather the status of the previous buffer. */ static int sh_mobile_ceu_capture(struct sh_mobile_ceu_dev *pcdev) { 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; u32 status; bool planar; int ret = 0; /* * The hardware is _very_ picky about this sequence. Especially * the CEU_CETCR_MAGIC value. It seems like we need to acknowledge * several not-so-well documented interrupt sources in CETCR. */ ceu_write(pcdev, CEIER, ceu_read(pcdev, CEIER) & ~CEU_CEIER_MASK); status = ceu_read(pcdev, CETCR); ceu_write(pcdev, CETCR, ~status & CEU_CETCR_MAGIC); if (!pcdev->frozen) ceu_write(pcdev, CEIER, ceu_read(pcdev, CEIER) | CEU_CEIER_MASK); ceu_write(pcdev, CAPCR, ceu_read(pcdev, CAPCR) & ~CEU_CAPCR_CTNCP); ceu_write(pcdev, CETCR, CEU_CETCR_MAGIC ^ CEU_CETCR_IGRW); /* * When a VBP interrupt occurs, a capture end interrupt does not occur * and the image of that frame is not captured correctly. So, soft reset * is needed here. */ if (status & CEU_CEIER_VBP) { sh_mobile_ceu_soft_reset(pcdev); ret = -EIO; } if (pcdev->frozen) { complete(&pcdev->complete); return ret; } if (!pcdev->active) return ret; if (V4L2_FIELD_INTERLACED_BT == pcdev->field) { top1 = CDBYR; top2 = CDBCR; bottom1 = CDAYR; bottom2 = CDACR; } else { top1 = CDAYR; top2 = CDACR; bottom1 = CDBYR; bottom2 = CDBCR; } phys_addr_top = vb2_dma_contig_plane_dma_addr(&pcdev->active->vb2_buf, 0); switch (icd->current_fmt->host_fmt->fourcc) { case V4L2_PIX_FMT_NV12: case V4L2_PIX_FMT_NV21: case V4L2_PIX_FMT_NV16: case V4L2_PIX_FMT_NV61: planar = true; break; default: planar = false; } ceu_write(pcdev, top1, phys_addr_top); if (V4L2_FIELD_NONE != pcdev->field) { phys_addr_bottom = phys_addr_top + icd->bytesperline; ceu_write(pcdev, bottom1, phys_addr_bottom); } if (planar) { phys_addr_top += icd->bytesperline * icd->user_height; ceu_write(pcdev, top2, phys_addr_top); if (V4L2_FIELD_NONE != pcdev->field) { phys_addr_bottom = phys_addr_top + icd->bytesperline; ceu_write(pcdev, bottom2, phys_addr_bottom); } } ceu_write(pcdev, CAPSR, 0x1); /* start capture */ return ret; } static int sh_mobile_ceu_videobuf_prepare(struct vb2_buffer *vb) { struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb); struct sh_mobile_ceu_buffer *buf = to_ceu_vb(vbuf); /* Added list head initialization on alloc */ WARN(!list_empty(&buf->queue), "Buffer %p on queue!\n", vb); return 0; } static void sh_mobile_ceu_videobuf_queue(struct vb2_buffer *vb) { struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb); struct soc_camera_device *icd = soc_camera_from_vb2q(vb->vb2_queue); struct soc_camera_host *ici = to_soc_camera_host(icd->parent); struct sh_mobile_ceu_dev *pcdev = ici->priv; struct sh_mobile_ceu_buffer *buf = to_ceu_vb(vbuf); unsigned long size; size = icd->sizeimage; if (vb2_plane_size(vb, 0) < size) { dev_err(icd->parent, "Buffer #%d too small (%lu < %lu)\n", vb->index, vb2_plane_size(vb, 0), size); goto error; } vb2_set_plane_payload(vb, 0, size); dev_dbg(icd->parent, "%s (vb=0x%p) 0x%p %lu\n", __func__, vb, vb2_plane_vaddr(vb, 0), vb2_get_plane_payload(vb, 0)); #ifdef DEBUG /* * This can be useful if you want to see if we actually fill * the buffer with something */ if (vb2_plane_vaddr(vb, 0)) memset(vb2_plane_vaddr(vb, 0), 0xaa, vb2_get_plane_payload(vb, 0)); #endif spin_lock_irq(&pcdev->lock); list_add_tail(&buf->queue, &pcdev->capture); if (!pcdev->active) { /* * Because there were no active buffer at this moment, * we are not interested in the return value of * sh_mobile_ceu_capture here. */ pcdev->active = vbuf; sh_mobile_ceu_capture(pcdev); } spin_unlock_irq(&pcdev->lock); return; error: vb2_buffer_done(vb, VB2_BUF_STATE_ERROR); } static void sh_mobile_ceu_videobuf_release(struct vb2_buffer *vb) { struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb); struct soc_camera_device *icd = soc_camera_from_vb2q(vb->vb2_queue); struct soc_camera_host *ici = to_soc_camera_host(icd->parent); struct sh_mobile_ceu_buffer *buf = to_ceu_vb(vbuf); struct sh_mobile_ceu_dev *pcdev = ici->priv; spin_lock_irq(&pcdev->lock); if (pcdev->active == vbuf) { /* disable capture (release DMA buffer), reset */ ceu_write(pcdev, CAPSR, 1 << 16); pcdev->active = NULL; } /* * Doesn't hurt also if the list is empty, but it hurts, if queuing the * buffer failed, and .buf_init() hasn't been called */ if (buf->queue.next) list_del_init(&buf->queue); pcdev->buf_total -= PAGE_ALIGN(vb2_plane_size(vb, 0)); dev_dbg(icd->parent, "%s() %zu bytes buffers\n", __func__, pcdev->buf_total); spin_unlock_irq(&pcdev->lock); } static int sh_mobile_ceu_videobuf_init(struct vb2_buffer *vb) { struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb); struct soc_camera_device *icd = soc_camera_from_vb2q(vb->vb2_queue); struct soc_camera_host *ici = to_soc_camera_host(icd->parent); struct sh_mobile_ceu_dev *pcdev = ici->priv; pcdev->buf_total += PAGE_ALIGN(vb2_plane_size(vb, 0)); dev_dbg(icd->parent, "%s() %zu bytes buffers\n", __func__, pcdev->buf_total); /* This is for locking debugging only */ INIT_LIST_HEAD(&to_ceu_vb(vbuf)->queue); return 0; } static void sh_mobile_ceu_stop_streaming(struct vb2_queue *q) { struct soc_camera_device *icd = soc_camera_from_vb2q(q); struct soc_camera_host *ici = to_soc_camera_host(icd->parent); struct sh_mobile_ceu_dev *pcdev = ici->priv; struct list_head *buf_head, *tmp; struct vb2_v4l2_buffer *vbuf; spin_lock_irq(&pcdev->lock); pcdev->active = NULL; list_for_each_safe(buf_head, tmp, &pcdev->capture) { vbuf = &list_entry(buf_head, struct sh_mobile_ceu_buffer, queue)->vb; vb2_buffer_done(&vbuf->vb2_buf, VB2_BUF_STATE_DONE); list_del_init(buf_head); } spin_unlock_irq(&pcdev->lock); sh_mobile_ceu_soft_reset(pcdev); } static const struct vb2_ops sh_mobile_ceu_videobuf_ops = { .queue_setup = sh_mobile_ceu_videobuf_setup, .buf_prepare = sh_mobile_ceu_videobuf_prepare, .buf_queue = sh_mobile_ceu_videobuf_queue, .buf_cleanup = sh_mobile_ceu_videobuf_release, .buf_init = sh_mobile_ceu_videobuf_init, .wait_prepare = vb2_ops_wait_prepare, .wait_finish = vb2_ops_wait_finish, .stop_streaming = sh_mobile_ceu_stop_streaming, }; static irqreturn_t sh_mobile_ceu_irq(int irq, void *data) { struct sh_mobile_ceu_dev *pcdev = data; struct vb2_v4l2_buffer *vbuf; int ret; spin_lock(&pcdev->lock); vbuf = pcdev->active; if (!vbuf) /* Stale interrupt from a released buffer */ goto out; list_del_init(&to_ceu_vb(vbuf)->queue); if (!list_empty(&pcdev->capture)) pcdev->active = &list_entry(pcdev->capture.next, struct sh_mobile_ceu_buffer, queue)->vb; else pcdev->active = NULL; ret = sh_mobile_ceu_capture(pcdev); vbuf->vb2_buf.timestamp = ktime_get_ns(); if (!ret) { vbuf->field = pcdev->field; vbuf->sequence = pcdev->sequence++; } vb2_buffer_done(&vbuf->vb2_buf, ret < 0 ? VB2_BUF_STATE_ERROR : VB2_BUF_STATE_DONE); out: spin_unlock(&pcdev->lock); return IRQ_HANDLED; } static int sh_mobile_ceu_add_device(struct soc_camera_device *icd) { dev_info(icd->parent, "SuperH Mobile CEU driver attached to camera %d\n", icd->devnum); return 0; } static void sh_mobile_ceu_remove_device(struct soc_camera_device *icd) { dev_info(icd->parent, "SuperH Mobile CEU driver detached from camera %d\n", icd->devnum); } /* 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; pm_runtime_get_sync(ici->v4l2_dev.dev); pcdev->buf_total = 0; 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); /* make sure active buffer is canceled */ spin_lock_irq(&pcdev->lock); if (pcdev->active) { list_del_init(&to_ceu_vb(pcdev->active)->queue); vb2_buffer_done(&pcdev->active->vb2_buf, VB2_BUF_STATE_ERROR); pcdev->active = NULL; } spin_unlock_irq(&pcdev->lock); pm_runtime_put(ici->v4l2_dev.dev); } /* * See chapter 29.4.12 "Capture Filter Control Register (CFLCR)" * in SH7722 Hardware Manual */ static unsigned int size_dst(unsigned int src, unsigned int scale) { unsigned int mant_pre = scale >> 12; if (!src || !scale) return src; return ((mant_pre + 2 * (src - 1)) / (2 * mant_pre) - 1) * mant_pre * 4096 / scale + 1; } static u16 calc_scale(unsigned int src, unsigned int *dst) { u16 scale; if (src == *dst) return 0; scale = (src * 4096 / *dst) & ~7; while (scale > 4096 && size_dst(src, scale) < *dst) scale -= 8; *dst = size_dst(src, scale); return scale; } /* rect is guaranteed to not exceed the scaled camera rectangle */ static void sh_mobile_ceu_set_rect(struct soc_camera_device *icd) { struct soc_camera_host *ici = to_soc_camera_host(icd->parent); struct sh_mobile_ceu_cam *cam = icd->host_priv; struct sh_mobile_ceu_dev *pcdev = ici->priv; unsigned int height, width, cdwdr_width, in_width, in_height; unsigned int left_offset, top_offset; u32 camor; dev_geo(icd->parent, "Crop %ux%u@%u:%u\n", icd->user_width, icd->user_height, cam->ceu_left, cam->ceu_top); left_offset = cam->ceu_left; top_offset = cam->ceu_top; WARN_ON(icd->user_width & 3 || icd->user_height & 3); width = icd->user_width; if (pcdev->image_mode) { in_width = cam->width; if (!pcdev->is_16bit) { in_width *= 2; left_offset *= 2; } } else { unsigned int w_factor; switch (icd->current_fmt->host_fmt->packing) { case SOC_MBUS_PACKING_2X8_PADHI: w_factor = 2; break; default: w_factor = 1; } in_width = cam->width * w_factor; left_offset *= w_factor; } cdwdr_width = icd->bytesperline; height = icd->user_height; in_height = cam->height; if (V4L2_FIELD_NONE != pcdev->field) { height = (height / 2) & ~3; in_height /= 2; top_offset /= 2; cdwdr_width *= 2; } /* Set CAMOR, CAPWR, CFSZR, take care of CDWDR */ camor = left_offset | (top_offset << 16); dev_geo(icd->parent, "CAMOR 0x%x, CAPWR 0x%x, CFSZR 0x%x, CDWDR 0x%x\n", camor, (in_height << 16) | in_width, (height << 16) | width, cdwdr_width); ceu_write(pcdev, CAMOR, camor); ceu_write(pcdev, CAPWR, (in_height << 16) | in_width); /* CFSZR clipping is applied _after_ the scaling filter (CFLCR) */ ceu_write(pcdev, CFSZR, (height << 16) | width); ceu_write(pcdev, CDWDR, cdwdr_width); } static u32 capture_save_reset(struct sh_mobile_ceu_dev *pcdev) { u32 capsr = ceu_read(pcdev, CAPSR); ceu_write(pcdev, CAPSR, 1 << 16); /* reset, stop capture */ return capsr; } static void capture_restore(struct sh_mobile_ceu_dev *pcdev, u32 capsr) { unsigned long timeout = jiffies + 10 * HZ; /* * Wait until the end of the current frame. It can take a long time, * but if it has been aborted by a CAPSR reset, it shoule exit sooner. */ while ((ceu_read(pcdev, CSTSR) & 1) && time_before(jiffies, timeout)) msleep(1); if (time_after(jiffies, timeout)) { dev_err(pcdev->ici.v4l2_dev.dev, "Timeout waiting for frame end! Interface problem?\n"); return; } /* Wait until reset clears, this shall not hang... */ while (ceu_read(pcdev, CAPSR) & (1 << 16)) udelay(10); /* Anything to restore? */ if (capsr & ~(1 << 16)) ceu_write(pcdev, CAPSR, capsr); } #define CEU_BUS_FLAGS (V4L2_MBUS_MASTER | \ V4L2_MBUS_PCLK_SAMPLE_RISING | \ V4L2_MBUS_HSYNC_ACTIVE_HIGH | \ V4L2_MBUS_HSYNC_ACTIVE_LOW | \ V4L2_MBUS_VSYNC_ACTIVE_HIGH | \ V4L2_MBUS_VSYNC_ACTIVE_LOW | \ V4L2_MBUS_DATA_ACTIVE_HIGH) /* Capture is not running, no interrupts, no locking needed */ static int sh_mobile_ceu_set_bus_param(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 *sd = soc_camera_to_subdev(icd); struct sh_mobile_ceu_cam *cam = icd->host_priv; struct v4l2_mbus_config cfg = {.type = V4L2_MBUS_PARALLEL,}; unsigned long value, common_flags = CEU_BUS_FLAGS; u32 capsr = capture_save_reset(pcdev); unsigned int yuv_lineskip; int ret; /* * If the client doesn't implement g_mbus_config, we just use our * platform data */ ret = v4l2_subdev_call(sd, video, g_mbus_config, &cfg); if (!ret) { common_flags = soc_mbus_config_compatible(&cfg, common_flags); if (!common_flags) return -EINVAL; } else if (ret != -ENOIOCTLCMD) { return ret; } /* Make choises, based on platform preferences */ if ((common_flags & V4L2_MBUS_HSYNC_ACTIVE_HIGH) && (common_flags & V4L2_MBUS_HSYNC_ACTIVE_LOW)) { if (pcdev->flags & SH_CEU_FLAG_HSYNC_LOW) common_flags &= ~V4L2_MBUS_HSYNC_ACTIVE_HIGH; else common_flags &= ~V4L2_MBUS_HSYNC_ACTIVE_LOW; } if ((common_flags & V4L2_MBUS_VSYNC_ACTIVE_HIGH) && (common_flags & V4L2_MBUS_VSYNC_ACTIVE_LOW)) { if (pcdev->flags & SH_CEU_FLAG_VSYNC_LOW) common_flags &= ~V4L2_MBUS_VSYNC_ACTIVE_HIGH; else common_flags &= ~V4L2_MBUS_VSYNC_ACTIVE_LOW; } cfg.flags = common_flags; ret = v4l2_subdev_call(sd, video, s_mbus_config, &cfg); if (ret < 0 && ret != -ENOIOCTLCMD) return ret; if (icd->current_fmt->host_fmt->bits_per_sample > 8) pcdev->is_16bit = 1; else pcdev->is_16bit = 0; ceu_write(pcdev, CRCNTR, 0); ceu_write(pcdev, CRCMPR, 0); value = 0x00000010; /* data fetch by default */ yuv_lineskip = 0x10; switch (icd->current_fmt->host_fmt->fourcc) { case V4L2_PIX_FMT_NV12: case V4L2_PIX_FMT_NV21: /* convert 4:2:2 -> 4:2:0 */ yuv_lineskip = 0; /* skip for NV12/21, no skip for NV16/61 */ /* fall-through */ case V4L2_PIX_FMT_NV16: case V4L2_PIX_FMT_NV61: switch (cam->code) { case MEDIA_BUS_FMT_UYVY8_2X8: value = 0x00000000; /* Cb0, Y0, Cr0, Y1 */ break; case MEDIA_BUS_FMT_VYUY8_2X8: value = 0x00000100; /* Cr0, Y0, Cb0, Y1 */ break; case MEDIA_BUS_FMT_YUYV8_2X8: value = 0x00000200; /* Y0, Cb0, Y1, Cr0 */ break; case MEDIA_BUS_FMT_YVYU8_2X8: value = 0x00000300; /* Y0, Cr0, Y1, Cb0 */ break; default: BUG(); } } if (icd->current_fmt->host_fmt->fourcc == V4L2_PIX_FMT_NV21 || icd->current_fmt->host_fmt->fourcc == V4L2_PIX_FMT_NV61) value ^= 0x00000100; /* swap U, V to change from NV1x->NVx1 */ value |= common_flags & V4L2_MBUS_VSYNC_ACTIVE_LOW ? 1 << 1 : 0; value |= common_flags & V4L2_MBUS_HSYNC_ACTIVE_LOW ? 1 << 0 : 0; if (pcdev->is_16bit) value |= 1 << 12; else if (pcdev->flags & SH_CEU_FLAG_LOWER_8BIT) value |= 2 << 12; ceu_write(pcdev, CAMCR, value); ceu_write(pcdev, CAPCR, 0x00300000); switch (pcdev->field) { case V4L2_FIELD_INTERLACED_TB: value = 0x101; break; case V4L2_FIELD_INTERLACED_BT: value = 0x102; break; default: value = 0; break; } ceu_write(pcdev, CAIFR, value); sh_mobile_ceu_set_rect(icd); mdelay(1); dev_geo(icd->parent, "CFLCR 0x%x\n", pcdev->cflcr); ceu_write(pcdev, CFLCR, pcdev->cflcr); /* * A few words about byte order (observed in Big Endian mode) * * In data fetch mode bytes are received in chunks of 8 bytes. * D0, D1, D2, D3, D4, D5, D6, D7 (D0 received first) * * The data is however by default written to memory in reverse order: * D7, D6, D5, D4, D3, D2, D1, D0 (D7 written to lowest byte) * * The lowest three bits of CDOCR allows us to do swapping, * using 7 we swap the data bytes to match the incoming order: * D0, D1, D2, D3, D4, D5, D6, D7 */ value = 0x00000007 | yuv_lineskip; ceu_write(pcdev, CDOCR, value); ceu_write(pcdev, CFWCR, 0); /* keep "datafetch firewall" disabled */ capture_restore(pcdev, capsr); /* not in bundle mode: skip CBDSR, CDAYR2, CDACR2, CDBYR2, CDBCR2 */ return 0; } static int sh_mobile_ceu_try_bus_param(struct soc_camera_device *icd, unsigned char buswidth) { struct v4l2_subdev *sd = soc_camera_to_subdev(icd); unsigned long common_flags = CEU_BUS_FLAGS; struct v4l2_mbus_config cfg = {.type = V4L2_MBUS_PARALLEL,}; int ret; ret = v4l2_subdev_call(sd, video, g_mbus_config, &cfg); if (!ret) common_flags = soc_mbus_config_compatible(&cfg, common_flags); else if (ret != -ENOIOCTLCMD) return ret; if (!common_flags || buswidth > 16) return -EINVAL; return 0; } static const struct soc_mbus_pixelfmt sh_mobile_ceu_formats[] = { { .fourcc = V4L2_PIX_FMT_NV12, .name = "NV12", .bits_per_sample = 8, .packing = SOC_MBUS_PACKING_1_5X8, .order = SOC_MBUS_ORDER_LE, .layout = SOC_MBUS_LAYOUT_PLANAR_2Y_C, }, { .fourcc = V4L2_PIX_FMT_NV21, .name = "NV21", .bits_per_sample = 8, .packing = SOC_MBUS_PACKING_1_5X8, .order = SOC_MBUS_ORDER_LE, .layout = SOC_MBUS_LAYOUT_PLANAR_2Y_C, }, { .fourcc = V4L2_PIX_FMT_NV16, .name = "NV16", .bits_per_sample = 8, .packing = SOC_MBUS_PACKING_2X8_PADHI, .order = SOC_MBUS_ORDER_LE, .layout = SOC_MBUS_LAYOUT_PLANAR_Y_C, }, { .fourcc = V4L2_PIX_FMT_NV61, .name = "NV61", .bits_per_sample = 8, .packing = SOC_MBUS_PACKING_2X8_PADHI, .order = SOC_MBUS_ORDER_LE, .layout = SOC_MBUS_LAYOUT_PLANAR_Y_C, }, }; /* This will be corrected as we get more formats */ static bool sh_mobile_ceu_packing_supported(const struct soc_mbus_pixelfmt *fmt) { return fmt->packing == SOC_MBUS_PACKING_NONE || (fmt->bits_per_sample == 8 && fmt->packing == SOC_MBUS_PACKING_1_5X8) || (fmt->bits_per_sample == 8 && fmt->packing == SOC_MBUS_PACKING_2X8_PADHI) || (fmt->bits_per_sample > 8 && fmt->packing == SOC_MBUS_PACKING_EXTEND16); } static struct soc_camera_device *ctrl_to_icd(struct v4l2_ctrl *ctrl) { return container_of(ctrl->handler, struct soc_camera_device, ctrl_handler); } static int sh_mobile_ceu_s_ctrl(struct v4l2_ctrl *ctrl) { struct soc_camera_device *icd = ctrl_to_icd(ctrl); struct soc_camera_host *ici = to_soc_camera_host(icd->parent); struct sh_mobile_ceu_dev *pcdev = ici->priv; switch (ctrl->id) { case V4L2_CID_SHARPNESS: switch (icd->current_fmt->host_fmt->fourcc) { case V4L2_PIX_FMT_NV12: case V4L2_PIX_FMT_NV21: case V4L2_PIX_FMT_NV16: case V4L2_PIX_FMT_NV61: ceu_write(pcdev, CLFCR, !ctrl->val); return 0; } break; } return -EINVAL; } static const struct v4l2_ctrl_ops sh_mobile_ceu_ctrl_ops = { .s_ctrl = sh_mobile_ceu_s_ctrl, }; static int sh_mobile_ceu_get_formats(struct soc_camera_device *icd, unsigned int idx, struct soc_camera_format_xlate *xlate) { struct v4l2_subdev *sd = soc_camera_to_subdev(icd); struct device *dev = icd->parent; struct soc_camera_host *ici = to_soc_camera_host(dev); struct sh_mobile_ceu_dev *pcdev = ici->priv; int ret, k, n; int formats = 0; struct sh_mobile_ceu_cam *cam; struct v4l2_subdev_mbus_code_enum code = { .which = V4L2_SUBDEV_FORMAT_ACTIVE, .index = idx, }; const struct soc_mbus_pixelfmt *fmt; ret = v4l2_subdev_call(sd, pad, enum_mbus_code, NULL, &code); if (ret < 0) /* No more formats */ return 0; fmt = soc_mbus_get_fmtdesc(code.code); if (!fmt) { dev_warn(dev, "unsupported format code #%u: %d\n", idx, code.code); return 0; } ret = sh_mobile_ceu_try_bus_param(icd, fmt->bits_per_sample); if (ret < 0) return 0; if (!icd->host_priv) { struct v4l2_subdev_format fmt = { .which = V4L2_SUBDEV_FORMAT_ACTIVE, }; struct v4l2_mbus_framefmt *mf = &fmt.format; struct v4l2_rect rect; int shift = 0; /* Add our control */ v4l2_ctrl_new_std(&icd->ctrl_handler, &sh_mobile_ceu_ctrl_ops, V4L2_CID_SHARPNESS, 0, 1, 1, 1); if (icd->ctrl_handler.error) return icd->ctrl_handler.error; /* FIXME: subwindow is lost between close / open */ /* Cache current client geometry */ ret = soc_camera_client_g_rect(sd, &rect); if (ret < 0) return ret; /* First time */ ret = v4l2_subdev_call(sd, pad, get_fmt, NULL, &fmt); if (ret < 0) return ret; /* * All currently existing CEU implementations support 2560x1920 * or larger frames. If the sensor is proposing too big a frame, * don't bother with possibly supportred by the CEU larger * sizes, just try VGA multiples. If needed, this can be * adjusted in the future. */ while ((mf->width > pcdev->max_width || mf->height > pcdev->max_height) && shift < 4) { /* Try 2560x1920, 1280x960, 640x480, 320x240 */ mf->width = 2560 >> shift; mf->height = 1920 >> shift; ret = v4l2_device_call_until_err(sd->v4l2_dev, soc_camera_grp_id(icd), pad, set_fmt, NULL, &fmt); if (ret < 0) return ret; shift++; } if (shift == 4) { dev_err(dev, "Failed to configure the client below %ux%x\n", mf->width, mf->height); return -EIO; } dev_geo(dev, "camera fmt %ux%u\n", mf->width, mf->height); cam = kzalloc(sizeof(*cam), GFP_KERNEL); if (!cam) return -ENOMEM; /* We are called with current camera crop, initialise subrect with it */ cam->rect = rect; cam->subrect = rect; cam->width = mf->width; cam->height = mf->height; icd->host_priv = cam; } else { cam = icd->host_priv; } /* Beginning of a pass */ if (!idx) cam->extra_fmt = NULL; switch (code.code) { case MEDIA_BUS_FMT_UYVY8_2X8: case MEDIA_BUS_FMT_VYUY8_2X8: case MEDIA_BUS_FMT_YUYV8_2X8: case MEDIA_BUS_FMT_YVYU8_2X8: if (cam->extra_fmt) break; /* * Our case is simple so far: for any of the above four camera * formats we add all our four synthesized NV* formats, so, * just marking the device with a single flag suffices. If * the format generation rules are more complex, you would have * to actually hang your already added / counted formats onto * the host_priv pointer and check whether the format you're * going to add now is already there. */ cam->extra_fmt = sh_mobile_ceu_formats; n = ARRAY_SIZE(sh_mobile_ceu_formats); formats += n; for (k = 0; xlate && k < n; k++) { xlate->host_fmt = &sh_mobile_ceu_formats[k]; xlate->code = code.code; xlate++; dev_dbg(dev, "Providing format %s using code %d\n", sh_mobile_ceu_formats[k].name, code.code); } break; default: if (!sh_mobile_ceu_packing_supported(fmt)) return 0; } /* Generic pass-through */ formats++; if (xlate) { xlate->host_fmt = fmt; xlate->code = code.code; xlate++; dev_dbg(dev, "Providing format %s in pass-through mode\n", fmt->name); } return formats; } static void sh_mobile_ceu_put_formats(struct soc_camera_device *icd) { kfree(icd->host_priv); icd->host_priv = NULL; } #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 * framerate by always requesting the maximum image from the client. See * Documentation/media/v4l-drivers/sh_mobile_ceu_camera.rst for a description of * scaling and cropping algorithms and for the meaning of referenced here steps. */ static int sh_mobile_ceu_set_selection(struct soc_camera_device *icd, struct v4l2_selection *sel) { struct v4l2_rect *rect = &sel->r; struct device *dev = icd->parent; struct soc_camera_host *ici = to_soc_camera_host(dev); struct sh_mobile_ceu_dev *pcdev = ici->priv; struct v4l2_selection cam_sel; struct sh_mobile_ceu_cam *cam = icd->host_priv; struct v4l2_rect *cam_rect = &cam_sel.r; struct v4l2_subdev *sd = soc_camera_to_subdev(icd); struct v4l2_subdev_format fmt = { .which = V4L2_SUBDEV_FORMAT_ACTIVE, }; struct v4l2_mbus_framefmt *mf = &fmt.format; unsigned int scale_cam_h, scale_cam_v, scale_ceu_h, scale_ceu_v, out_width, out_height; int interm_width, interm_height; u32 capsr, cflcr; int ret; dev_geo(dev, "S_SELECTION(%ux%u@%u:%u)\n", rect->width, rect->height, rect->left, rect->top); /* During camera cropping its output window can change too, stop CEU */ capsr = capture_save_reset(pcdev); dev_dbg(dev, "CAPSR 0x%x, CFLCR 0x%x\n", capsr, pcdev->cflcr); /* * 1. - 2. Apply iterative camera S_SELECTION for new input window, read back * actual camera rectangle. */ ret = soc_camera_client_s_selection(sd, sel, &cam_sel, &cam->rect, &cam->subrect); if (ret < 0) return ret; dev_geo(dev, "1-2: camera cropped to %ux%u@%u:%u\n", cam_rect->width, cam_rect->height, cam_rect->left, cam_rect->top); /* On success cam_crop contains current camera crop */ /* 3. Retrieve camera output window */ ret = v4l2_subdev_call(sd, pad, get_fmt, NULL, &fmt); if (ret < 0) return ret; if (mf->width > pcdev->max_width || mf->height > pcdev->max_height) return -EINVAL; /* 4. Calculate camera scales */ scale_cam_h = calc_generic_scale(cam_rect->width, mf->width); scale_cam_v = calc_generic_scale(cam_rect->height, mf->height); /* Calculate intermediate window */ interm_width = scale_down(rect->width, scale_cam_h); interm_height = scale_down(rect->height, scale_cam_v); if (interm_width < icd->user_width) { u32 new_scale_h; new_scale_h = calc_generic_scale(rect->width, icd->user_width); mf->width = scale_down(cam_rect->width, new_scale_h); } if (interm_height < icd->user_height) { u32 new_scale_v; new_scale_v = calc_generic_scale(rect->height, icd->user_height); mf->height = scale_down(cam_rect->height, new_scale_v); } if (interm_width < icd->user_width || interm_height < icd->user_height) { ret = v4l2_device_call_until_err(sd->v4l2_dev, soc_camera_grp_id(icd), pad, set_fmt, NULL, &fmt); if (ret < 0) return ret; dev_geo(dev, "New camera output %ux%u\n", mf->width, mf->height); scale_cam_h = calc_generic_scale(cam_rect->width, mf->width); scale_cam_v = calc_generic_scale(cam_rect->height, mf->height); interm_width = scale_down(rect->width, scale_cam_h); interm_height = scale_down(rect->height, scale_cam_v); } /* Cache camera output window */ cam->width = mf->width; cam->height = mf->height; if (pcdev->image_mode) { out_width = min(interm_width, icd->user_width); out_height = min(interm_height, icd->user_height); } else { out_width = interm_width; out_height = interm_height; } /* * 5. Calculate CEU scales from camera scales from results of (5) and * the user window */ scale_ceu_h = calc_scale(interm_width, &out_width); scale_ceu_v = calc_scale(interm_height, &out_height); dev_geo(dev, "5: CEU scales %u:%u\n", scale_ceu_h, scale_ceu_v); /* Apply CEU scales. */ cflcr = scale_ceu_h | (scale_ceu_v << 16); if (cflcr != pcdev->cflcr) { pcdev->cflcr = cflcr; ceu_write(pcdev, CFLCR, cflcr); } icd->user_width = out_width & ~3; icd->user_height = out_height & ~3; /* Offsets are applied at the CEU scaling filter input */ cam->ceu_left = scale_down(rect->left - cam_rect->left, scale_cam_h) & ~1; cam->ceu_top = scale_down(rect->top - cam_rect->top, scale_cam_v) & ~1; /* 6. Use CEU cropping to crop to the new window. */ sh_mobile_ceu_set_rect(icd); cam->subrect = *rect; dev_geo(dev, "6: CEU cropped to %ux%u@%u:%u\n", icd->user_width, icd->user_height, cam->ceu_left, cam->ceu_top); /* Restore capture. The CE bit can be cleared by the hardware */ if (pcdev->active) capsr |= 1; capture_restore(pcdev, capsr); /* Even if only camera cropping succeeded */ return ret; } static int sh_mobile_ceu_get_selection(struct soc_camera_device *icd, struct v4l2_selection *sel) { struct sh_mobile_ceu_cam *cam = icd->host_priv; sel->r = cam->subrect; return 0; } /* Similar to set_crop multistage iterative algorithm */ static int sh_mobile_ceu_set_fmt(struct soc_camera_device *icd, struct v4l2_format *f) { struct device *dev = icd->parent; struct soc_camera_host *ici = to_soc_camera_host(dev); struct sh_mobile_ceu_dev *pcdev = ici->priv; struct sh_mobile_ceu_cam *cam = icd->host_priv; struct v4l2_pix_format *pix = &f->fmt.pix; struct v4l2_mbus_framefmt mf; __u32 pixfmt = pix->pixelformat; const struct soc_camera_format_xlate *xlate; unsigned int ceu_sub_width = pcdev->max_width, ceu_sub_height = pcdev->max_height; u16 scale_v, scale_h; int ret; bool image_mode; enum v4l2_field field; switch (pix->field) { default: pix->field = V4L2_FIELD_NONE; /* fall-through */ case V4L2_FIELD_INTERLACED_TB: case V4L2_FIELD_INTERLACED_BT: case V4L2_FIELD_NONE: field = pix->field; break; case V4L2_FIELD_INTERLACED: field = V4L2_FIELD_INTERLACED_TB; break; } xlate = soc_camera_xlate_by_fourcc(icd, pixfmt); if (!xlate) { dev_warn(dev, "Format %x not found\n", pixfmt); return -EINVAL; } /* 1.-4. Calculate desired client output geometry */ 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; switch (pixfmt) { case V4L2_PIX_FMT_NV12: case V4L2_PIX_FMT_NV21: case V4L2_PIX_FMT_NV16: case V4L2_PIX_FMT_NV61: image_mode = true; break; default: image_mode = false; } dev_geo(dev, "S_FMT(pix=0x%x, fld 0x%x, code 0x%x, %ux%u)\n", pixfmt, mf.field, mf.code, pix->width, pix->height); dev_geo(dev, "4: request camera output %ux%u\n", mf.width, mf.height); /* 5. - 9. */ 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); /* Done with the camera. Now see if we can improve the result */ dev_geo(dev, "fmt %ux%u, requested %ux%u\n", mf.width, mf.height, pix->width, pix->height); if (ret < 0) return ret; if (mf.code != xlate->code) return -EINVAL; /* 9. Prepare CEU crop */ cam->width = mf.width; cam->height = mf.height; /* 10. Use CEU scaling to scale to the requested user window. */ /* We cannot scale up */ if (pix->width > ceu_sub_width) ceu_sub_width = pix->width; if (pix->height > ceu_sub_height) ceu_sub_height = pix->height; pix->colorspace = mf.colorspace; if (image_mode) { /* Scale pix->{width x height} down to width x height */ scale_h = calc_scale(ceu_sub_width, &pix->width); scale_v = calc_scale(ceu_sub_height, &pix->height); } else { pix->width = ceu_sub_width; pix->height = ceu_sub_height; scale_h = 0; scale_v = 0; } pcdev->cflcr = scale_h | (scale_v << 16); /* * We have calculated CFLCR, the actual configuration will be performed * in sh_mobile_ceu_set_bus_param() */ dev_geo(dev, "10: W: %u : 0x%x = %u, H: %u : 0x%x = %u\n", ceu_sub_width, scale_h, pix->width, ceu_sub_height, scale_v, pix->height); cam->code = xlate->code; icd->current_fmt = xlate; pcdev->field = field; pcdev->image_mode = image_mode; /* CFSZR requirement */ pix->width &= ~3; pix->height &= ~3; return 0; } #define CEU_CHDW_MAX 8188U /* Maximum line stride */ static int sh_mobile_ceu_try_fmt(struct soc_camera_device *icd, struct v4l2_format *f) { struct soc_camera_host *ici = to_soc_camera_host(icd->parent); struct sh_mobile_ceu_dev *pcdev = ici->priv; const struct soc_camera_format_xlate *xlate; struct v4l2_pix_format *pix = &f->fmt.pix; struct v4l2_subdev *sd = soc_camera_to_subdev(icd); struct v4l2_subdev_pad_config pad_cfg; struct v4l2_subdev_format format = { .which = V4L2_SUBDEV_FORMAT_TRY, }; struct v4l2_mbus_framefmt *mf = &format.format; __u32 pixfmt = pix->pixelformat; int width, height; int ret; dev_geo(icd->parent, "TRY_FMT(pix=0x%x, %ux%u)\n", pixfmt, pix->width, pix->height); xlate = soc_camera_xlate_by_fourcc(icd, pixfmt); if (!xlate) { xlate = icd->current_fmt; dev_dbg(icd->parent, "Format %x not found, keeping %x\n", pixfmt, xlate->host_fmt->fourcc); pixfmt = xlate->host_fmt->fourcc; pix->pixelformat = pixfmt; pix->colorspace = icd->colorspace; } /* FIXME: calculate using depth and bus width */ /* CFSZR requires height and width to be 4-pixel aligned */ v4l_bound_align_image(&pix->width, 2, pcdev->max_width, 2, &pix->height, 4, pcdev->max_height, 2, 0); width = pix->width; height = pix->height; /* limit to sensor capabilities */ mf->width = pix->width; mf->height = pix->height; mf->field = pix->field; mf->code = xlate->code; mf->colorspace = pix->colorspace; ret = v4l2_device_call_until_err(sd->v4l2_dev, soc_camera_grp_id(icd), pad, set_fmt, &pad_cfg, &format); if (ret < 0) return ret; pix->width = mf->width; pix->height = mf->height; pix->field = mf->field; pix->colorspace = mf->colorspace; switch (pixfmt) { case V4L2_PIX_FMT_NV12: case V4L2_PIX_FMT_NV21: case V4L2_PIX_FMT_NV16: case V4L2_PIX_FMT_NV61: /* FIXME: check against rect_max after converting soc-camera */ /* We can scale precisely, need a bigger image from camera */ if (pix->width < width || pix->height < height) { /* * We presume, the sensor behaves sanely, i.e., if * requested a bigger rectangle, it will not return a * smaller one. */ mf->width = pcdev->max_width; mf->height = pcdev->max_height; ret = v4l2_device_call_until_err(sd->v4l2_dev, soc_camera_grp_id(icd), pad, set_fmt, &pad_cfg, &format); if (ret < 0) { /* Shouldn't actually happen... */ dev_err(icd->parent, "FIXME: client try_fmt() = %d\n", ret); return ret; } } /* We will scale exactly */ if (mf->width > width) pix->width = width; if (mf->height > height) pix->height = height; pix->bytesperline = max(pix->bytesperline, pix->width); pix->bytesperline = min(pix->bytesperline, CEU_CHDW_MAX); pix->bytesperline &= ~3; break; default: /* Configurable stride isn't supported in pass-through mode. */ pix->bytesperline = 0; } pix->width &= ~3; pix->height &= ~3; pix->sizeimage = 0; dev_geo(icd->parent, "%s(): return %d, fmt 0x%x, %ux%u\n", __func__, ret, pix->pixelformat, pix->width, pix->height); return ret; } static int sh_mobile_ceu_set_liveselection(struct soc_camera_device *icd, struct v4l2_selection *sel) { struct v4l2_subdev *sd = soc_camera_to_subdev(icd); struct soc_camera_host *ici = to_soc_camera_host(icd->parent); struct sh_mobile_ceu_dev *pcdev = ici->priv; u32 out_width = icd->user_width, out_height = icd->user_height; int ret; /* Freeze queue */ pcdev->frozen = 1; /* Wait for frame */ ret = wait_for_completion_interruptible(&pcdev->complete); /* Stop the client */ ret = v4l2_subdev_call(sd, video, s_stream, 0); if (ret < 0) dev_warn(icd->parent, "Client failed to stop the stream: %d\n", ret); else /* Do the crop, if it fails, there's nothing more we can do */ sh_mobile_ceu_set_selection(icd, sel); dev_geo(icd->parent, "Output after crop: %ux%u\n", icd->user_width, icd->user_height); if (icd->user_width != out_width || icd->user_height != out_height) { struct v4l2_format f = { .type = V4L2_BUF_TYPE_VIDEO_CAPTURE, .fmt.pix = { .width = out_width, .height = out_height, .pixelformat = icd->current_fmt->host_fmt->fourcc, .field = pcdev->field, .colorspace = icd->colorspace, }, }; ret = sh_mobile_ceu_set_fmt(icd, &f); if (!ret && (out_width != f.fmt.pix.width || out_height != f.fmt.pix.height)) ret = -EINVAL; if (!ret) { icd->user_width = out_width & ~3; icd->user_height = out_height & ~3; ret = sh_mobile_ceu_set_bus_param(icd); } } /* Thaw the queue */ pcdev->frozen = 0; spin_lock_irq(&pcdev->lock); sh_mobile_ceu_capture(pcdev); spin_unlock_irq(&pcdev->lock); /* Start the client */ ret = v4l2_subdev_call(sd, video, s_stream, 1); return ret; } static __poll_t sh_mobile_ceu_poll(struct file *file, poll_table *pt) { struct soc_camera_device *icd = file->private_data; return vb2_poll(&icd->vb2_vidq, file, pt); } static int sh_mobile_ceu_querycap(struct soc_camera_host *ici, struct v4l2_capability *cap) { strscpy(cap->card, "SuperH_Mobile_CEU", sizeof(cap->card)); strscpy(cap->driver, "sh_mobile_ceu", sizeof(cap->driver)); strscpy(cap->bus_info, "platform:sh_mobile_ceu", sizeof(cap->bus_info)); cap->device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING; cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS; return 0; } static int sh_mobile_ceu_init_videobuf(struct vb2_queue *q, struct soc_camera_device *icd) { struct soc_camera_host *ici = to_soc_camera_host(icd->parent); q->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; q->io_modes = VB2_MMAP | VB2_USERPTR; q->drv_priv = icd; q->ops = &sh_mobile_ceu_videobuf_ops; q->mem_ops = &vb2_dma_contig_memops; q->buf_struct_size = sizeof(struct sh_mobile_ceu_buffer); q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC; q->lock = &ici->host_lock; q->dev = ici->v4l2_dev.dev; return vb2_queue_init(q); } 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_selection = sh_mobile_ceu_get_selection, .set_selection = sh_mobile_ceu_set_selection, .set_liveselection = sh_mobile_ceu_set_liveselection, .set_fmt = sh_mobile_ceu_set_fmt, .try_fmt = sh_mobile_ceu_try_fmt, .poll = sh_mobile_ceu_poll, .querycap = sh_mobile_ceu_querycap, .set_bus_param = sh_mobile_ceu_set_bus_param, .init_videobuf2 = sh_mobile_ceu_init_videobuf, }; struct bus_wait { struct notifier_block notifier; struct completion completion; struct device *dev; }; static int bus_notify(struct notifier_block *nb, unsigned long action, void *data) { struct device *dev = data; struct bus_wait *wait = container_of(nb, struct bus_wait, notifier); if (wait->dev != dev) return NOTIFY_DONE; switch (action) { case BUS_NOTIFY_UNBOUND_DRIVER: /* Protect from module unloading */ wait_for_completion(&wait->completion); return NOTIFY_OK; } return NOTIFY_DONE; } static int sh_mobile_ceu_probe(struct platform_device *pdev) { struct sh_mobile_ceu_dev *pcdev; struct resource *res; void __iomem *base; unsigned int irq; int err; struct bus_wait wait = { .completion = COMPLETION_INITIALIZER_ONSTACK(wait.completion), .notifier.notifier_call = bus_notify, }; res = platform_get_resource(pdev, IORESOURCE_MEM, 0); irq = platform_get_irq(pdev, 0); if (!res || (int)irq <= 0) { dev_err(&pdev->dev, "Not enough CEU platform resources.\n"); return -ENODEV; } pcdev = devm_kzalloc(&pdev->dev, sizeof(*pcdev), GFP_KERNEL); if (!pcdev) { dev_err(&pdev->dev, "Could not allocate pcdev\n"); return -ENOMEM; } INIT_LIST_HEAD(&pcdev->capture); spin_lock_init(&pcdev->lock); init_completion(&pcdev->complete); pcdev->pdata = pdev->dev.platform_data; if (!pcdev->pdata && !pdev->dev.of_node) { dev_err(&pdev->dev, "CEU platform data not set.\n"); return -EINVAL; } /* 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; } pcdev->field = V4L2_FIELD_NONE; 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)) return PTR_ERR(base); pcdev->irq = irq; pcdev->base = base; pcdev->video_limit = 0; /* only enabled if second resource exists */ res = platform_get_resource(pdev, IORESOURCE_MEM, 1); if (res) { err = dma_declare_coherent_memory(&pdev->dev, res->start, res->start, resource_size(res), DMA_MEMORY_EXCLUSIVE); if (err) { dev_err(&pdev->dev, "Unable to declare CEU memory.\n"); return err; } pcdev->video_limit = resource_size(res); } /* request irq */ err = devm_request_irq(&pdev->dev, pcdev->irq, sh_mobile_ceu_irq, 0, dev_name(&pdev->dev), pcdev); if (err) { dev_err(&pdev->dev, "Unable to register CEU interrupt.\n"); goto exit_release_mem; } pm_suspend_ignore_children(&pdev->dev, true); pm_runtime_enable(&pdev->dev); pm_runtime_resume(&pdev->dev); pcdev->ici.priv = pcdev; pcdev->ici.v4l2_dev.dev = &pdev->dev; pcdev->ici.nr = pdev->id; pcdev->ici.drv_name = dev_name(&pdev->dev); pcdev->ici.ops = &sh_mobile_ceu_host_ops; pcdev->ici.capabilities = SOCAM_HOST_CAP_STRIDE; if (pcdev->pdata && pcdev->pdata->asd_sizes) { pcdev->ici.asd = pcdev->pdata->asd; pcdev->ici.asd_sizes = pcdev->pdata->asd_sizes; } err = soc_camera_host_register(&pcdev->ici); if (err) goto exit_free_clk; return 0; exit_free_clk: pm_runtime_disable(&pdev->dev); exit_release_mem: if (platform_get_resource(pdev, IORESOURCE_MEM, 1)) dma_release_declared_memory(&pdev->dev); return err; } static int sh_mobile_ceu_remove(struct platform_device *pdev) { struct soc_camera_host *soc_host = to_soc_camera_host(&pdev->dev); soc_camera_host_unregister(soc_host); pm_runtime_disable(&pdev->dev); if (platform_get_resource(pdev, IORESOURCE_MEM, 1)) dma_release_declared_memory(&pdev->dev); return 0; } static int sh_mobile_ceu_runtime_nop(struct device *dev) { /* Runtime PM callback shared between ->runtime_suspend() * and ->runtime_resume(). Simply returns success. * * This driver re-initializes all registers after * pm_runtime_get_sync() anyway so there is no need * to save and restore registers here. */ return 0; } static const struct dev_pm_ops sh_mobile_ceu_dev_pm_ops = { .runtime_suspend = sh_mobile_ceu_runtime_nop, .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", .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, }; module_platform_driver(sh_mobile_ceu_driver); MODULE_DESCRIPTION("SuperH Mobile CEU driver"); MODULE_AUTHOR("Magnus Damm"); MODULE_LICENSE("GPL"); MODULE_VERSION("0.1.0"); MODULE_ALIAS("platform:sh_mobile_ceu");
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