diff options
-rw-r--r-- | drivers/media/platform/soc_camera/Kconfig | 9 | ||||
-rw-r--r-- | drivers/media/platform/soc_camera/Makefile | 3 | ||||
-rw-r--r-- | drivers/media/platform/soc_camera/sh_mobile_ceu_camera.c | 1810 | ||||
-rw-r--r-- | include/media/drv-intf/sh_mobile_ceu.h | 29 |
4 files changed, 0 insertions, 1851 deletions
diff --git a/drivers/media/platform/soc_camera/Kconfig b/drivers/media/platform/soc_camera/Kconfig index 669d116b8f09..94907d0611d6 100644 --- a/drivers/media/platform/soc_camera/Kconfig +++ b/drivers/media/platform/soc_camera/Kconfig @@ -15,12 +15,3 @@ config SOC_CAMERA_PLATFORM depends on SOC_CAMERA help This is a generic SoC camera platform driver, useful for testing - -config VIDEO_SH_MOBILE_CEU - tristate "SuperH Mobile CEU Interface driver" - depends on VIDEO_DEV && SOC_CAMERA && HAVE_CLK - depends on ARCH_SHMOBILE || COMPILE_TEST - select VIDEOBUF2_DMA_CONTIG - select SOC_CAMERA_SCALE_CROP - ---help--- - This is a v4l2 driver for the SuperH Mobile CEU Interface diff --git a/drivers/media/platform/soc_camera/Makefile b/drivers/media/platform/soc_camera/Makefile index 07a451e8b228..aa4b855a0882 100644 --- a/drivers/media/platform/soc_camera/Makefile +++ b/drivers/media/platform/soc_camera/Makefile @@ -4,6 +4,3 @@ obj-$(CONFIG_SOC_CAMERA_SCALE_CROP) += soc_scale_crop.o # a platform subdevice driver stub, allowing to support cameras by adding a # couple of callback functions to the board code obj-$(CONFIG_SOC_CAMERA_PLATFORM) += soc_camera_platform.o - -# soc-camera host drivers have to be linked after camera drivers -obj-$(CONFIG_VIDEO_SH_MOBILE_CEU) += sh_mobile_ceu_camera.o diff --git a/drivers/media/platform/soc_camera/sh_mobile_ceu_camera.c b/drivers/media/platform/soc_camera/sh_mobile_ceu_camera.c deleted file mode 100644 index 6803f744e307..000000000000 --- a/drivers/media/platform/soc_camera/sh_mobile_ceu_camera.c +++ /dev/null @@ -1,1810 +0,0 @@ -// 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 |