diff options
Diffstat (limited to 'drivers/media/platform/sh_veu.c')
| -rw-r--r-- | drivers/media/platform/sh_veu.c | 1203 |
1 files changed, 0 insertions, 1203 deletions
diff --git a/drivers/media/platform/sh_veu.c b/drivers/media/platform/sh_veu.c deleted file mode 100644 index f08b8fc192d8..000000000000 --- a/drivers/media/platform/sh_veu.c +++ /dev/null @@ -1,1203 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 -/* - * sh-mobile VEU mem2mem driver - * - * Copyright (C) 2012 Renesas Electronics Corporation - * Author: Guennadi Liakhovetski, <g.liakhovetski@gmx.de> - * Copyright (C) 2008 Magnus Damm - */ - -#include <linux/err.h> -#include <linux/fs.h> -#include <linux/kernel.h> -#include <linux/module.h> -#include <linux/interrupt.h> -#include <linux/io.h> -#include <linux/platform_device.h> -#include <linux/pm_runtime.h> -#include <linux/slab.h> -#include <linux/types.h> -#include <linux/videodev2.h> - -#include <media/v4l2-dev.h> -#include <media/v4l2-device.h> -#include <media/v4l2-ioctl.h> -#include <media/v4l2-mem2mem.h> -#include <media/v4l2-image-sizes.h> -#include <media/videobuf2-dma-contig.h> - -#define VEU_STR 0x00 /* start register */ -#define VEU_SWR 0x10 /* src: line length */ -#define VEU_SSR 0x14 /* src: image size */ -#define VEU_SAYR 0x18 /* src: y/rgb plane address */ -#define VEU_SACR 0x1c /* src: c plane address */ -#define VEU_BSSR 0x20 /* bundle mode register */ -#define VEU_EDWR 0x30 /* dst: line length */ -#define VEU_DAYR 0x34 /* dst: y/rgb plane address */ -#define VEU_DACR 0x38 /* dst: c plane address */ -#define VEU_TRCR 0x50 /* transform control */ -#define VEU_RFCR 0x54 /* resize scale */ -#define VEU_RFSR 0x58 /* resize clip */ -#define VEU_ENHR 0x5c /* enhance */ -#define VEU_FMCR 0x70 /* filter mode */ -#define VEU_VTCR 0x74 /* lowpass vertical */ -#define VEU_HTCR 0x78 /* lowpass horizontal */ -#define VEU_APCR 0x80 /* color match */ -#define VEU_ECCR 0x84 /* color replace */ -#define VEU_AFXR 0x90 /* fixed mode */ -#define VEU_SWPR 0x94 /* swap */ -#define VEU_EIER 0xa0 /* interrupt mask */ -#define VEU_EVTR 0xa4 /* interrupt event */ -#define VEU_STAR 0xb0 /* status */ -#define VEU_BSRR 0xb4 /* reset */ - -#define VEU_MCR00 0x200 /* color conversion matrix coefficient 00 */ -#define VEU_MCR01 0x204 /* color conversion matrix coefficient 01 */ -#define VEU_MCR02 0x208 /* color conversion matrix coefficient 02 */ -#define VEU_MCR10 0x20c /* color conversion matrix coefficient 10 */ -#define VEU_MCR11 0x210 /* color conversion matrix coefficient 11 */ -#define VEU_MCR12 0x214 /* color conversion matrix coefficient 12 */ -#define VEU_MCR20 0x218 /* color conversion matrix coefficient 20 */ -#define VEU_MCR21 0x21c /* color conversion matrix coefficient 21 */ -#define VEU_MCR22 0x220 /* color conversion matrix coefficient 22 */ -#define VEU_COFFR 0x224 /* color conversion offset */ -#define VEU_CBR 0x228 /* color conversion clip */ - -/* - * 4092x4092 max size is the normal case. In some cases it can be reduced to - * 2048x2048, in other cases it can be 4092x8188 or even 8188x8188. - */ -#define MAX_W 4092 -#define MAX_H 4092 -#define MIN_W 8 -#define MIN_H 8 -#define ALIGN_W 4 - -/* 3 buffers of 2048 x 1536 - 3 megapixels @ 16bpp */ -#define VIDEO_MEM_LIMIT ALIGN(2048 * 1536 * 2 * 3, 1024 * 1024) - -#define MEM2MEM_DEF_TRANSLEN 1 - -struct sh_veu_dev; - -struct sh_veu_file { - struct v4l2_fh fh; - struct sh_veu_dev *veu_dev; - bool cfg_needed; -}; - -struct sh_veu_format { - u32 fourcc; - unsigned int depth; - unsigned int ydepth; -}; - -/* video data format */ -struct sh_veu_vfmt { - /* Replace with v4l2_rect */ - struct v4l2_rect frame; - unsigned int bytesperline; - unsigned int offset_y; - unsigned int offset_c; - const struct sh_veu_format *fmt; -}; - -struct sh_veu_dev { - struct v4l2_device v4l2_dev; - struct video_device vdev; - struct v4l2_m2m_dev *m2m_dev; - struct device *dev; - struct v4l2_m2m_ctx *m2m_ctx; - struct sh_veu_vfmt vfmt_out; - struct sh_veu_vfmt vfmt_in; - /* Only single user per direction so far */ - struct sh_veu_file *capture; - struct sh_veu_file *output; - struct mutex fop_lock; - void __iomem *base; - spinlock_t lock; - bool is_2h; - unsigned int xaction; - bool aborting; -}; - -enum sh_veu_fmt_idx { - SH_VEU_FMT_NV12, - SH_VEU_FMT_NV16, - SH_VEU_FMT_NV24, - SH_VEU_FMT_RGB332, - SH_VEU_FMT_RGB444, - SH_VEU_FMT_RGB565, - SH_VEU_FMT_RGB666, - SH_VEU_FMT_RGB24, -}; - -#define DEFAULT_IN_WIDTH VGA_WIDTH -#define DEFAULT_IN_HEIGHT VGA_HEIGHT -#define DEFAULT_IN_FMTIDX SH_VEU_FMT_NV12 -#define DEFAULT_OUT_WIDTH VGA_WIDTH -#define DEFAULT_OUT_HEIGHT VGA_HEIGHT -#define DEFAULT_OUT_FMTIDX SH_VEU_FMT_RGB565 - -/* - * Alignment: Y-plane should be 4-byte aligned for NV12 and NV16, and 8-byte - * aligned for NV24. - */ -static const struct sh_veu_format sh_veu_fmt[] = { - [SH_VEU_FMT_NV12] = { .ydepth = 8, .depth = 12, .fourcc = V4L2_PIX_FMT_NV12 }, - [SH_VEU_FMT_NV16] = { .ydepth = 8, .depth = 16, .fourcc = V4L2_PIX_FMT_NV16 }, - [SH_VEU_FMT_NV24] = { .ydepth = 8, .depth = 24, .fourcc = V4L2_PIX_FMT_NV24 }, - [SH_VEU_FMT_RGB332] = { .ydepth = 8, .depth = 8, .fourcc = V4L2_PIX_FMT_RGB332 }, - [SH_VEU_FMT_RGB444] = { .ydepth = 16, .depth = 16, .fourcc = V4L2_PIX_FMT_RGB444 }, - [SH_VEU_FMT_RGB565] = { .ydepth = 16, .depth = 16, .fourcc = V4L2_PIX_FMT_RGB565 }, - [SH_VEU_FMT_RGB666] = { .ydepth = 32, .depth = 32, .fourcc = V4L2_PIX_FMT_BGR666 }, - [SH_VEU_FMT_RGB24] = { .ydepth = 24, .depth = 24, .fourcc = V4L2_PIX_FMT_RGB24 }, -}; - -#define DEFAULT_IN_VFMT (struct sh_veu_vfmt){ \ - .frame = { \ - .width = VGA_WIDTH, \ - .height = VGA_HEIGHT, \ - }, \ - .bytesperline = (VGA_WIDTH * sh_veu_fmt[DEFAULT_IN_FMTIDX].ydepth) >> 3, \ - .fmt = &sh_veu_fmt[DEFAULT_IN_FMTIDX], \ -} - -#define DEFAULT_OUT_VFMT (struct sh_veu_vfmt){ \ - .frame = { \ - .width = VGA_WIDTH, \ - .height = VGA_HEIGHT, \ - }, \ - .bytesperline = (VGA_WIDTH * sh_veu_fmt[DEFAULT_OUT_FMTIDX].ydepth) >> 3, \ - .fmt = &sh_veu_fmt[DEFAULT_OUT_FMTIDX], \ -} - -/* - * TODO: add support for further output formats: - * SH_VEU_FMT_NV12, - * SH_VEU_FMT_NV16, - * SH_VEU_FMT_NV24, - * SH_VEU_FMT_RGB332, - * SH_VEU_FMT_RGB444, - * SH_VEU_FMT_RGB666, - * SH_VEU_FMT_RGB24, - */ - -static const int sh_veu_fmt_out[] = { - SH_VEU_FMT_RGB565, -}; - -/* - * TODO: add support for further input formats: - * SH_VEU_FMT_NV16, - * SH_VEU_FMT_NV24, - * SH_VEU_FMT_RGB565, - * SH_VEU_FMT_RGB666, - * SH_VEU_FMT_RGB24, - */ -static const int sh_veu_fmt_in[] = { - SH_VEU_FMT_NV12, -}; - -static enum v4l2_colorspace sh_veu_4cc2cspace(u32 fourcc) -{ - switch (fourcc) { - default: - BUG(); - case V4L2_PIX_FMT_NV12: - case V4L2_PIX_FMT_NV16: - case V4L2_PIX_FMT_NV24: - return V4L2_COLORSPACE_SMPTE170M; - case V4L2_PIX_FMT_RGB332: - case V4L2_PIX_FMT_RGB444: - case V4L2_PIX_FMT_RGB565: - case V4L2_PIX_FMT_BGR666: - case V4L2_PIX_FMT_RGB24: - return V4L2_COLORSPACE_SRGB; - } -} - -static u32 sh_veu_reg_read(struct sh_veu_dev *veu, unsigned int reg) -{ - return ioread32(veu->base + reg); -} - -static void sh_veu_reg_write(struct sh_veu_dev *veu, unsigned int reg, - u32 value) -{ - iowrite32(value, veu->base + reg); -} - - /* ========== mem2mem callbacks ========== */ - -static void sh_veu_job_abort(void *priv) -{ - struct sh_veu_dev *veu = priv; - - /* Will cancel the transaction in the next interrupt handler */ - veu->aborting = true; -} - -static void sh_veu_process(struct sh_veu_dev *veu, - struct vb2_buffer *src_buf, - struct vb2_buffer *dst_buf) -{ - dma_addr_t addr = vb2_dma_contig_plane_dma_addr(dst_buf, 0); - - sh_veu_reg_write(veu, VEU_DAYR, addr + veu->vfmt_out.offset_y); - sh_veu_reg_write(veu, VEU_DACR, veu->vfmt_out.offset_c ? - addr + veu->vfmt_out.offset_c : 0); - dev_dbg(veu->dev, "%s(): dst base %lx, y: %x, c: %x\n", __func__, - (unsigned long)addr, - veu->vfmt_out.offset_y, veu->vfmt_out.offset_c); - - addr = vb2_dma_contig_plane_dma_addr(src_buf, 0); - sh_veu_reg_write(veu, VEU_SAYR, addr + veu->vfmt_in.offset_y); - sh_veu_reg_write(veu, VEU_SACR, veu->vfmt_in.offset_c ? - addr + veu->vfmt_in.offset_c : 0); - dev_dbg(veu->dev, "%s(): src base %lx, y: %x, c: %x\n", __func__, - (unsigned long)addr, - veu->vfmt_in.offset_y, veu->vfmt_in.offset_c); - - sh_veu_reg_write(veu, VEU_STR, 1); - - sh_veu_reg_write(veu, VEU_EIER, 1); /* enable interrupt in VEU */ -} - -/* - * sh_veu_device_run() - prepares and starts the device - * - * This will be called by the framework when it decides to schedule a particular - * instance. - */ -static void sh_veu_device_run(void *priv) -{ - struct sh_veu_dev *veu = priv; - struct vb2_v4l2_buffer *src_buf, *dst_buf; - - src_buf = v4l2_m2m_next_src_buf(veu->m2m_ctx); - dst_buf = v4l2_m2m_next_dst_buf(veu->m2m_ctx); - - if (src_buf && dst_buf) - sh_veu_process(veu, &src_buf->vb2_buf, &dst_buf->vb2_buf); -} - - /* ========== video ioctls ========== */ - -static bool sh_veu_is_streamer(struct sh_veu_dev *veu, struct sh_veu_file *veu_file, - enum v4l2_buf_type type) -{ - return (type == V4L2_BUF_TYPE_VIDEO_CAPTURE && - veu_file == veu->capture) || - (type == V4L2_BUF_TYPE_VIDEO_OUTPUT && - veu_file == veu->output); -} - -static int sh_veu_queue_init(void *priv, struct vb2_queue *src_vq, - struct vb2_queue *dst_vq); - -/* - * It is not unusual to have video nodes open()ed multiple times. While some - * V4L2 operations are non-intrusive, like querying formats and various - * parameters, others, like setting formats, starting and stopping streaming, - * queuing and dequeuing buffers, directly affect hardware configuration and / - * or execution. This function verifies availability of the requested interface - * and, if available, reserves it for the requesting user. - */ -static int sh_veu_stream_init(struct sh_veu_dev *veu, struct sh_veu_file *veu_file, - enum v4l2_buf_type type) -{ - struct sh_veu_file **stream; - - switch (type) { - case V4L2_BUF_TYPE_VIDEO_CAPTURE: - stream = &veu->capture; - break; - case V4L2_BUF_TYPE_VIDEO_OUTPUT: - stream = &veu->output; - break; - default: - return -EINVAL; - } - - if (*stream == veu_file) - return 0; - - if (*stream) - return -EBUSY; - - *stream = veu_file; - - return 0; -} - -static int sh_veu_context_init(struct sh_veu_dev *veu) -{ - if (veu->m2m_ctx) - return 0; - - veu->m2m_ctx = v4l2_m2m_ctx_init(veu->m2m_dev, veu, - sh_veu_queue_init); - - return PTR_ERR_OR_ZERO(veu->m2m_ctx); -} - -static int sh_veu_querycap(struct file *file, void *priv, - struct v4l2_capability *cap) -{ - strscpy(cap->driver, "sh-veu", sizeof(cap->driver)); - strscpy(cap->card, "sh-mobile VEU", sizeof(cap->card)); - strscpy(cap->bus_info, "platform:sh-veu", sizeof(cap->bus_info)); - return 0; -} - -static int sh_veu_enum_fmt(struct v4l2_fmtdesc *f, const int *fmt, int fmt_num) -{ - if (f->index >= fmt_num) - return -EINVAL; - - f->pixelformat = sh_veu_fmt[fmt[f->index]].fourcc; - return 0; -} - -static int sh_veu_enum_fmt_vid_cap(struct file *file, void *priv, - struct v4l2_fmtdesc *f) -{ - return sh_veu_enum_fmt(f, sh_veu_fmt_out, ARRAY_SIZE(sh_veu_fmt_out)); -} - -static int sh_veu_enum_fmt_vid_out(struct file *file, void *priv, - struct v4l2_fmtdesc *f) -{ - return sh_veu_enum_fmt(f, sh_veu_fmt_in, ARRAY_SIZE(sh_veu_fmt_in)); -} - -static struct sh_veu_vfmt *sh_veu_get_vfmt(struct sh_veu_dev *veu, - enum v4l2_buf_type type) -{ - switch (type) { - case V4L2_BUF_TYPE_VIDEO_CAPTURE: - return &veu->vfmt_out; - case V4L2_BUF_TYPE_VIDEO_OUTPUT: - return &veu->vfmt_in; - default: - return NULL; - } -} - -static int sh_veu_g_fmt(struct sh_veu_file *veu_file, struct v4l2_format *f) -{ - struct v4l2_pix_format *pix = &f->fmt.pix; - struct sh_veu_dev *veu = veu_file->veu_dev; - struct sh_veu_vfmt *vfmt; - - vfmt = sh_veu_get_vfmt(veu, f->type); - - pix->width = vfmt->frame.width; - pix->height = vfmt->frame.height; - pix->field = V4L2_FIELD_NONE; - pix->pixelformat = vfmt->fmt->fourcc; - pix->colorspace = sh_veu_4cc2cspace(pix->pixelformat); - pix->bytesperline = vfmt->bytesperline; - pix->sizeimage = vfmt->bytesperline * pix->height * - vfmt->fmt->depth / vfmt->fmt->ydepth; - dev_dbg(veu->dev, "%s(): type: %d, size %u @ %ux%u, fmt %x\n", __func__, - f->type, pix->sizeimage, pix->width, pix->height, pix->pixelformat); - - return 0; -} - -static int sh_veu_g_fmt_vid_out(struct file *file, void *priv, - struct v4l2_format *f) -{ - return sh_veu_g_fmt(priv, f); -} - -static int sh_veu_g_fmt_vid_cap(struct file *file, void *priv, - struct v4l2_format *f) -{ - return sh_veu_g_fmt(priv, f); -} - -static int sh_veu_try_fmt(struct v4l2_format *f, const struct sh_veu_format *fmt) -{ - struct v4l2_pix_format *pix = &f->fmt.pix; - unsigned int y_bytes_used; - - /* - * V4L2 specification suggests, that the driver should correct the - * format struct if any of the dimensions is unsupported - */ - switch (pix->field) { - default: - case V4L2_FIELD_ANY: - pix->field = V4L2_FIELD_NONE; - /* fall through: continue handling V4L2_FIELD_NONE */ - case V4L2_FIELD_NONE: - break; - } - - v4l_bound_align_image(&pix->width, MIN_W, MAX_W, ALIGN_W, - &pix->height, MIN_H, MAX_H, 0, 0); - - y_bytes_used = (pix->width * fmt->ydepth) >> 3; - - if (pix->bytesperline < y_bytes_used) - pix->bytesperline = y_bytes_used; - pix->sizeimage = pix->height * pix->bytesperline * fmt->depth / fmt->ydepth; - - pix->pixelformat = fmt->fourcc; - pix->colorspace = sh_veu_4cc2cspace(pix->pixelformat); - - pr_debug("%s(): type: %d, size %u\n", __func__, f->type, pix->sizeimage); - - return 0; -} - -static const struct sh_veu_format *sh_veu_find_fmt(const struct v4l2_format *f) -{ - const int *fmt; - int i, n, dflt; - - pr_debug("%s(%d;%d)\n", __func__, f->type, f->fmt.pix.field); - - switch (f->type) { - case V4L2_BUF_TYPE_VIDEO_CAPTURE: - fmt = sh_veu_fmt_out; - n = ARRAY_SIZE(sh_veu_fmt_out); - dflt = DEFAULT_OUT_FMTIDX; - break; - case V4L2_BUF_TYPE_VIDEO_OUTPUT: - default: - fmt = sh_veu_fmt_in; - n = ARRAY_SIZE(sh_veu_fmt_in); - dflt = DEFAULT_IN_FMTIDX; - break; - } - - for (i = 0; i < n; i++) - if (sh_veu_fmt[fmt[i]].fourcc == f->fmt.pix.pixelformat) - return &sh_veu_fmt[fmt[i]]; - - return &sh_veu_fmt[dflt]; -} - -static int sh_veu_try_fmt_vid_cap(struct file *file, void *priv, - struct v4l2_format *f) -{ - const struct sh_veu_format *fmt; - - fmt = sh_veu_find_fmt(f); - - return sh_veu_try_fmt(f, fmt); -} - -static int sh_veu_try_fmt_vid_out(struct file *file, void *priv, - struct v4l2_format *f) -{ - const struct sh_veu_format *fmt; - - fmt = sh_veu_find_fmt(f); - - return sh_veu_try_fmt(f, fmt); -} - -static void sh_veu_colour_offset(struct sh_veu_dev *veu, struct sh_veu_vfmt *vfmt) -{ - /* dst_left and dst_top validity will be verified in CROP / COMPOSE */ - unsigned int left = vfmt->frame.left & ~0x03; - unsigned int top = vfmt->frame.top; - dma_addr_t offset = (dma_addr_t)top * veu->vfmt_out.bytesperline + - (((dma_addr_t)left * veu->vfmt_out.fmt->depth) >> 3); - unsigned int y_line; - - vfmt->offset_y = offset; - - switch (vfmt->fmt->fourcc) { - case V4L2_PIX_FMT_NV12: - case V4L2_PIX_FMT_NV16: - case V4L2_PIX_FMT_NV24: - y_line = ALIGN(vfmt->frame.width, 16); - vfmt->offset_c = offset + y_line * vfmt->frame.height; - break; - case V4L2_PIX_FMT_RGB332: - case V4L2_PIX_FMT_RGB444: - case V4L2_PIX_FMT_RGB565: - case V4L2_PIX_FMT_BGR666: - case V4L2_PIX_FMT_RGB24: - vfmt->offset_c = 0; - break; - default: - BUG(); - } -} - -static int sh_veu_s_fmt(struct sh_veu_file *veu_file, struct v4l2_format *f) -{ - struct v4l2_pix_format *pix = &f->fmt.pix; - struct sh_veu_dev *veu = veu_file->veu_dev; - struct sh_veu_vfmt *vfmt; - struct vb2_queue *vq; - int ret = sh_veu_context_init(veu); - if (ret < 0) - return ret; - - vq = v4l2_m2m_get_vq(veu->m2m_ctx, f->type); - if (!vq) - return -EINVAL; - - if (vb2_is_busy(vq)) { - v4l2_err(&veu_file->veu_dev->v4l2_dev, "%s queue busy\n", __func__); - return -EBUSY; - } - - vfmt = sh_veu_get_vfmt(veu, f->type); - /* called after try_fmt(), hence vfmt != NULL. Implicit BUG_ON() below */ - - vfmt->fmt = sh_veu_find_fmt(f); - /* vfmt->fmt != NULL following the same argument as above */ - vfmt->frame.width = pix->width; - vfmt->frame.height = pix->height; - vfmt->bytesperline = pix->bytesperline; - - sh_veu_colour_offset(veu, vfmt); - - /* - * We could also verify and require configuration only if any parameters - * actually have changed, but it is unlikely, that the user requests the - * same configuration several times without closing the device. - */ - veu_file->cfg_needed = true; - - dev_dbg(veu->dev, - "Setting format for type %d, wxh: %dx%d, fmt: %x\n", - f->type, pix->width, pix->height, vfmt->fmt->fourcc); - - return 0; -} - -static int sh_veu_s_fmt_vid_cap(struct file *file, void *priv, - struct v4l2_format *f) -{ - int ret = sh_veu_try_fmt_vid_cap(file, priv, f); - if (ret) - return ret; - - return sh_veu_s_fmt(priv, f); -} - -static int sh_veu_s_fmt_vid_out(struct file *file, void *priv, - struct v4l2_format *f) -{ - int ret = sh_veu_try_fmt_vid_out(file, priv, f); - if (ret) - return ret; - - return sh_veu_s_fmt(priv, f); -} - -static int sh_veu_reqbufs(struct file *file, void *priv, - struct v4l2_requestbuffers *reqbufs) -{ - struct sh_veu_file *veu_file = priv; - struct sh_veu_dev *veu = veu_file->veu_dev; - int ret = sh_veu_context_init(veu); - if (ret < 0) - return ret; - - ret = sh_veu_stream_init(veu, veu_file, reqbufs->type); - if (ret < 0) - return ret; - - return v4l2_m2m_reqbufs(file, veu->m2m_ctx, reqbufs); -} - -static int sh_veu_querybuf(struct file *file, void *priv, - struct v4l2_buffer *buf) -{ - struct sh_veu_file *veu_file = priv; - - if (!sh_veu_is_streamer(veu_file->veu_dev, veu_file, buf->type)) - return -EBUSY; - - return v4l2_m2m_querybuf(file, veu_file->veu_dev->m2m_ctx, buf); -} - -static int sh_veu_qbuf(struct file *file, void *priv, struct v4l2_buffer *buf) -{ - struct sh_veu_file *veu_file = priv; - - dev_dbg(veu_file->veu_dev->dev, "%s(%d)\n", __func__, buf->type); - if (!sh_veu_is_streamer(veu_file->veu_dev, veu_file, buf->type)) - return -EBUSY; - - return v4l2_m2m_qbuf(file, veu_file->veu_dev->m2m_ctx, buf); -} - -static int sh_veu_dqbuf(struct file *file, void *priv, struct v4l2_buffer *buf) -{ - struct sh_veu_file *veu_file = priv; - - dev_dbg(veu_file->veu_dev->dev, "%s(%d)\n", __func__, buf->type); - if (!sh_veu_is_streamer(veu_file->veu_dev, veu_file, buf->type)) - return -EBUSY; - - return v4l2_m2m_dqbuf(file, veu_file->veu_dev->m2m_ctx, buf); -} - -static void sh_veu_calc_scale(struct sh_veu_dev *veu, - int size_in, int size_out, int crop_out, - u32 *mant, u32 *frac, u32 *rep) -{ - u32 fixpoint; - - /* calculate FRAC and MANT */ - *rep = *mant = *frac = 0; - - if (size_in == size_out) { - if (crop_out != size_out) - *mant = 1; /* needed for cropping */ - return; - } - - /* VEU2H special upscale */ - if (veu->is_2h && size_out > size_in) { - u32 fixpoint = (4096 * size_in) / size_out; - *mant = fixpoint / 4096; - *frac = (fixpoint - (*mant * 4096)) & ~0x07; - - switch (*frac) { - case 0x800: - *rep = 1; - break; - case 0x400: - *rep = 3; - break; - case 0x200: - *rep = 7; - break; - } - if (*rep) - return; - } - - fixpoint = (4096 * (size_in - 1)) / (size_out + 1); - *mant = fixpoint / 4096; - *frac = fixpoint - (*mant * 4096); - - if (*frac & 0x07) { - /* - * FIXME: do we really have to round down twice in the - * up-scaling case? - */ - *frac &= ~0x07; - if (size_out > size_in) - *frac -= 8; /* round down if scaling up */ - else - *frac += 8; /* round up if scaling down */ - } -} - -static unsigned long sh_veu_scale_v(struct sh_veu_dev *veu, - int size_in, int size_out, int crop_out) -{ - u32 mant, frac, value, rep; - - sh_veu_calc_scale(veu, size_in, size_out, crop_out, &mant, &frac, &rep); - - /* set scale */ - value = (sh_veu_reg_read(veu, VEU_RFCR) & ~0xffff0000) | - (((mant << 12) | frac) << 16); - - sh_veu_reg_write(veu, VEU_RFCR, value); - - /* set clip */ - value = (sh_veu_reg_read(veu, VEU_RFSR) & ~0xffff0000) | - (((rep << 12) | crop_out) << 16); - - sh_veu_reg_write(veu, VEU_RFSR, value); - - return ALIGN((size_in * crop_out) / size_out, 4); -} - -static unsigned long sh_veu_scale_h(struct sh_veu_dev *veu, - int size_in, int size_out, int crop_out) -{ - u32 mant, frac, value, rep; - - sh_veu_calc_scale(veu, size_in, size_out, crop_out, &mant, &frac, &rep); - - /* set scale */ - value = (sh_veu_reg_read(veu, VEU_RFCR) & ~0xffff) | - (mant << 12) | frac; - - sh_veu_reg_write(veu, VEU_RFCR, value); - - /* set clip */ - value = (sh_veu_reg_read(veu, VEU_RFSR) & ~0xffff) | - (rep << 12) | crop_out; - - sh_veu_reg_write(veu, VEU_RFSR, value); - - return ALIGN((size_in * crop_out) / size_out, 4); -} - -static void sh_veu_configure(struct sh_veu_dev *veu) -{ - u32 src_width, src_stride, src_height; - u32 dst_width, dst_stride, dst_height; - u32 real_w, real_h; - - /* reset VEU */ - sh_veu_reg_write(veu, VEU_BSRR, 0x100); - - src_width = veu->vfmt_in.frame.width; - src_height = veu->vfmt_in.frame.height; - src_stride = ALIGN(veu->vfmt_in.frame.width, 16); - - dst_width = real_w = veu->vfmt_out.frame.width; - dst_height = real_h = veu->vfmt_out.frame.height; - /* Datasheet is unclear - whether it's always number of bytes or not */ - dst_stride = veu->vfmt_out.bytesperline; - - /* - * So far real_w == dst_width && real_h == dst_height, but it wasn't - * necessarily the case in the original vidix driver, so, it may change - * here in the future too. - */ - src_width = sh_veu_scale_h(veu, src_width, real_w, dst_width); - src_height = sh_veu_scale_v(veu, src_height, real_h, dst_height); - - sh_veu_reg_write(veu, VEU_SWR, src_stride); - sh_veu_reg_write(veu, VEU_SSR, src_width | (src_height << 16)); - sh_veu_reg_write(veu, VEU_BSSR, 0); /* not using bundle mode */ - - sh_veu_reg_write(veu, VEU_EDWR, dst_stride); - sh_veu_reg_write(veu, VEU_DACR, 0); /* unused for RGB */ - - sh_veu_reg_write(veu, VEU_SWPR, 0x67); - sh_veu_reg_write(veu, VEU_TRCR, (6 << 16) | (0 << 14) | 2 | 4); - - if (veu->is_2h) { - sh_veu_reg_write(veu, VEU_MCR00, 0x0cc5); - sh_veu_reg_write(veu, VEU_MCR01, 0x0950); - sh_veu_reg_write(veu, VEU_MCR02, 0x0000); - - sh_veu_reg_write(veu, VEU_MCR10, 0x397f); - sh_veu_reg_write(veu, VEU_MCR11, 0x0950); - sh_veu_reg_write(veu, VEU_MCR12, 0x3ccd); - - sh_veu_reg_write(veu, VEU_MCR20, 0x0000); - sh_veu_reg_write(veu, VEU_MCR21, 0x0950); - sh_veu_reg_write(veu, VEU_MCR22, 0x1023); - - sh_veu_reg_write(veu, VEU_COFFR, 0x00800010); - } -} - -static int sh_veu_streamon(struct file *file, void *priv, - enum v4l2_buf_type type) -{ - struct sh_veu_file *veu_file = priv; - - if (!sh_veu_is_streamer(veu_file->veu_dev, veu_file, type)) - return -EBUSY; - - if (veu_file->cfg_needed) { - struct sh_veu_dev *veu = veu_file->veu_dev; - veu_file->cfg_needed = false; - sh_veu_configure(veu_file->veu_dev); - veu->xaction = 0; - veu->aborting = false; - } - - return v4l2_m2m_streamon(file, veu_file->veu_dev->m2m_ctx, type); -} - -static int sh_veu_streamoff(struct file *file, void *priv, - enum v4l2_buf_type type) -{ - struct sh_veu_file *veu_file = priv; - - if (!sh_veu_is_streamer(veu_file->veu_dev, veu_file, type)) - return -EBUSY; - - return v4l2_m2m_streamoff(file, veu_file->veu_dev->m2m_ctx, type); -} - -static const struct v4l2_ioctl_ops sh_veu_ioctl_ops = { - .vidioc_querycap = sh_veu_querycap, - - .vidioc_enum_fmt_vid_cap = sh_veu_enum_fmt_vid_cap, - .vidioc_g_fmt_vid_cap = sh_veu_g_fmt_vid_cap, - .vidioc_try_fmt_vid_cap = sh_veu_try_fmt_vid_cap, - .vidioc_s_fmt_vid_cap = sh_veu_s_fmt_vid_cap, - - .vidioc_enum_fmt_vid_out = sh_veu_enum_fmt_vid_out, - .vidioc_g_fmt_vid_out = sh_veu_g_fmt_vid_out, - .vidioc_try_fmt_vid_out = sh_veu_try_fmt_vid_out, - .vidioc_s_fmt_vid_out = sh_veu_s_fmt_vid_out, - - .vidioc_reqbufs = sh_veu_reqbufs, - .vidioc_querybuf = sh_veu_querybuf, - - .vidioc_qbuf = sh_veu_qbuf, - .vidioc_dqbuf = sh_veu_dqbuf, - - .vidioc_streamon = sh_veu_streamon, - .vidioc_streamoff = sh_veu_streamoff, -}; - - /* ========== Queue operations ========== */ - -static int sh_veu_queue_setup(struct vb2_queue *vq, - unsigned int *nbuffers, unsigned int *nplanes, - unsigned int sizes[], struct device *alloc_devs[]) -{ - struct sh_veu_dev *veu = vb2_get_drv_priv(vq); - struct sh_veu_vfmt *vfmt = sh_veu_get_vfmt(veu, vq->type); - unsigned int count = *nbuffers; - unsigned int size = vfmt->bytesperline * vfmt->frame.height * - vfmt->fmt->depth / vfmt->fmt->ydepth; - - if (count < 2) - *nbuffers = count = 2; - - if (size * count > VIDEO_MEM_LIMIT) { - count = VIDEO_MEM_LIMIT / size; - *nbuffers = count; - } - - if (*nplanes) - return sizes[0] < size ? -EINVAL : 0; - - *nplanes = 1; - sizes[0] = size; - - dev_dbg(veu->dev, "get %d buffer(s) of size %d each.\n", count, size); - - return 0; -} - -static int sh_veu_buf_prepare(struct vb2_buffer *vb) -{ - struct sh_veu_dev *veu = vb2_get_drv_priv(vb->vb2_queue); - struct sh_veu_vfmt *vfmt; - unsigned int sizeimage; - - vfmt = sh_veu_get_vfmt(veu, vb->vb2_queue->type); - sizeimage = vfmt->bytesperline * vfmt->frame.height * - vfmt->fmt->depth / vfmt->fmt->ydepth; - - if (vb2_plane_size(vb, 0) < sizeimage) { - dev_dbg(veu->dev, "%s data will not fit into plane (%lu < %u)\n", - __func__, vb2_plane_size(vb, 0), sizeimage); - return -EINVAL; - } - - vb2_set_plane_payload(vb, 0, sizeimage); - - return 0; -} - -static void sh_veu_buf_queue(struct vb2_buffer *vb) -{ - struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb); - struct sh_veu_dev *veu = vb2_get_drv_priv(vb->vb2_queue); - dev_dbg(veu->dev, "%s(%d)\n", __func__, vb->type); - v4l2_m2m_buf_queue(veu->m2m_ctx, vbuf); -} - -static const struct vb2_ops sh_veu_qops = { - .queue_setup = sh_veu_queue_setup, - .buf_prepare = sh_veu_buf_prepare, - .buf_queue = sh_veu_buf_queue, - .wait_prepare = vb2_ops_wait_prepare, - .wait_finish = vb2_ops_wait_finish, -}; - -static int sh_veu_queue_init(void *priv, struct vb2_queue *src_vq, - struct vb2_queue *dst_vq) -{ - struct sh_veu_dev *veu = priv; - int ret; - - memset(src_vq, 0, sizeof(*src_vq)); - src_vq->type = V4L2_BUF_TYPE_VIDEO_OUTPUT; - src_vq->io_modes = VB2_MMAP | VB2_USERPTR; - src_vq->drv_priv = veu; - src_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer); - src_vq->ops = &sh_veu_qops; - src_vq->mem_ops = &vb2_dma_contig_memops; - src_vq->lock = &veu->fop_lock; - src_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY; - src_vq->dev = veu->v4l2_dev.dev; - - ret = vb2_queue_init(src_vq); - if (ret < 0) - return ret; - - memset(dst_vq, 0, sizeof(*dst_vq)); - dst_vq->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; - dst_vq->io_modes = VB2_MMAP | VB2_USERPTR; - dst_vq->drv_priv = veu; - dst_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer); - dst_vq->ops = &sh_veu_qops; - dst_vq->mem_ops = &vb2_dma_contig_memops; - dst_vq->lock = &veu->fop_lock; - dst_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY; - dst_vq->dev = veu->v4l2_dev.dev; - - return vb2_queue_init(dst_vq); -} - - /* ========== File operations ========== */ - -static int sh_veu_open(struct file *file) -{ - struct sh_veu_dev *veu = video_drvdata(file); - struct sh_veu_file *veu_file; - - veu_file = kzalloc(sizeof(*veu_file), GFP_KERNEL); - if (!veu_file) - return -ENOMEM; - - v4l2_fh_init(&veu_file->fh, video_devdata(file)); - veu_file->veu_dev = veu; - veu_file->cfg_needed = true; - - file->private_data = veu_file; - - pm_runtime_get_sync(veu->dev); - v4l2_fh_add(&veu_file->fh); - - dev_dbg(veu->dev, "Created instance %p\n", veu_file); - - return 0; -} - -static int sh_veu_release(struct file *file) -{ - struct sh_veu_dev *veu = video_drvdata(file); - struct sh_veu_file *veu_file = file->private_data; - - dev_dbg(veu->dev, "Releasing instance %p\n", veu_file); - - if (veu_file == veu->capture) { - veu->capture = NULL; - vb2_queue_release(v4l2_m2m_get_vq(veu->m2m_ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE)); - } - - if (veu_file == veu->output) { - veu->output = NULL; - vb2_queue_release(v4l2_m2m_get_vq(veu->m2m_ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT)); - } - - if (!veu->output && !veu->capture && veu->m2m_ctx) { - v4l2_m2m_ctx_release(veu->m2m_ctx); - veu->m2m_ctx = NULL; - } - - pm_runtime_put(veu->dev); - v4l2_fh_del(&veu_file->fh); - v4l2_fh_exit(&veu_file->fh); - - kfree(veu_file); - - return 0; -} - -static __poll_t sh_veu_poll(struct file *file, - struct poll_table_struct *wait) -{ - struct sh_veu_file *veu_file = file->private_data; - - return v4l2_m2m_poll(file, veu_file->veu_dev->m2m_ctx, wait); -} - -static int sh_veu_mmap(struct file *file, struct vm_area_struct *vma) -{ - struct sh_veu_file *veu_file = file->private_data; - - return v4l2_m2m_mmap(file, veu_file->veu_dev->m2m_ctx, vma); -} - -static const struct v4l2_file_operations sh_veu_fops = { - .owner = THIS_MODULE, - .open = sh_veu_open, - .release = sh_veu_release, - .poll = sh_veu_poll, - .unlocked_ioctl = video_ioctl2, - .mmap = sh_veu_mmap, -}; - -static const struct video_device sh_veu_videodev = { - .name = "sh-veu", - .fops = &sh_veu_fops, - .ioctl_ops = &sh_veu_ioctl_ops, - .minor = -1, - .release = video_device_release_empty, - .vfl_dir = VFL_DIR_M2M, - .device_caps = V4L2_CAP_VIDEO_M2M | V4L2_CAP_STREAMING, -}; - -static const struct v4l2_m2m_ops sh_veu_m2m_ops = { - .device_run = sh_veu_device_run, - .job_abort = sh_veu_job_abort, -}; - -static irqreturn_t sh_veu_bh(int irq, void *dev_id) -{ - struct sh_veu_dev *veu = dev_id; - - if (veu->xaction == MEM2MEM_DEF_TRANSLEN || veu->aborting) { - v4l2_m2m_job_finish(veu->m2m_dev, veu->m2m_ctx); - veu->xaction = 0; - } else { - sh_veu_device_run(veu); - } - - return IRQ_HANDLED; -} - -static irqreturn_t sh_veu_isr(int irq, void *dev_id) -{ - struct sh_veu_dev *veu = dev_id; - struct vb2_v4l2_buffer *dst; - struct vb2_v4l2_buffer *src; - u32 status = sh_veu_reg_read(veu, VEU_EVTR); - - /* bundle read mode not used */ - if (!(status & 1)) - return IRQ_NONE; - - /* disable interrupt in VEU */ - sh_veu_reg_write(veu, VEU_EIER, 0); - /* halt operation */ - sh_veu_reg_write(veu, VEU_STR, 0); - /* ack int, write 0 to clear bits */ - sh_veu_reg_write(veu, VEU_EVTR, status & ~1); - - /* conversion completed */ - dst = v4l2_m2m_dst_buf_remove(veu->m2m_ctx); - src = v4l2_m2m_src_buf_remove(veu->m2m_ctx); - if (!src || !dst) - return IRQ_NONE; - - dst->vb2_buf.timestamp = src->vb2_buf.timestamp; - dst->flags &= ~V4L2_BUF_FLAG_TSTAMP_SRC_MASK; - dst->flags |= - src->flags & V4L2_BUF_FLAG_TSTAMP_SRC_MASK; - dst->timecode = src->timecode; - - spin_lock(&veu->lock); - v4l2_m2m_buf_done(src, VB2_BUF_STATE_DONE); - v4l2_m2m_buf_done(dst, VB2_BUF_STATE_DONE); - spin_unlock(&veu->lock); - - veu->xaction++; - - return IRQ_WAKE_THREAD; -} - -static int sh_veu_probe(struct platform_device *pdev) -{ - struct sh_veu_dev *veu; - struct resource *reg_res; - struct video_device *vdev; - int irq, ret; - - reg_res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - irq = platform_get_irq(pdev, 0); - - if (!reg_res || irq <= 0) { - dev_err(&pdev->dev, "Insufficient VEU platform information.\n"); - return -ENODEV; - } - - veu = devm_kzalloc(&pdev->dev, sizeof(*veu), GFP_KERNEL); - if (!veu) - return -ENOMEM; - - veu->is_2h = resource_size(reg_res) == 0x22c; - - veu->base = devm_ioremap_resource(&pdev->dev, reg_res); - if (IS_ERR(veu->base)) - return PTR_ERR(veu->base); - - ret = devm_request_threaded_irq(&pdev->dev, irq, sh_veu_isr, sh_veu_bh, - 0, "veu", veu); - if (ret < 0) - return ret; - - ret = v4l2_device_register(&pdev->dev, &veu->v4l2_dev); - if (ret < 0) { - dev_err(&pdev->dev, "Error registering v4l2 device\n"); - return ret; - } - - vdev = &veu->vdev; - - *vdev = sh_veu_videodev; - vdev->v4l2_dev = &veu->v4l2_dev; - spin_lock_init(&veu->lock); - mutex_init(&veu->fop_lock); - vdev->lock = &veu->fop_lock; - - video_set_drvdata(vdev, veu); - - veu->dev = &pdev->dev; - veu->vfmt_out = DEFAULT_OUT_VFMT; - veu->vfmt_in = DEFAULT_IN_VFMT; - - veu->m2m_dev = v4l2_m2m_init(&sh_veu_m2m_ops); - if (IS_ERR(veu->m2m_dev)) { - ret = PTR_ERR(veu->m2m_dev); - v4l2_err(&veu->v4l2_dev, "Failed to init mem2mem device: %d\n", ret); - goto em2minit; - } - - pm_runtime_enable(&pdev->dev); - pm_runtime_resume(&pdev->dev); - - ret = video_register_device(vdev, VFL_TYPE_VIDEO, -1); - pm_runtime_suspend(&pdev->dev); - if (ret < 0) - goto evidreg; - - return ret; - -evidreg: - pm_runtime_disable(&pdev->dev); - v4l2_m2m_release(veu->m2m_dev); -em2minit: - v4l2_device_unregister(&veu->v4l2_dev); - return ret; -} - -static int sh_veu_remove(struct platform_device *pdev) -{ - struct v4l2_device *v4l2_dev = platform_get_drvdata(pdev); - struct sh_veu_dev *veu = container_of(v4l2_dev, - struct sh_veu_dev, v4l2_dev); - - video_unregister_device(&veu->vdev); - pm_runtime_disable(&pdev->dev); - v4l2_m2m_release(veu->m2m_dev); - v4l2_device_unregister(&veu->v4l2_dev); - - return 0; -} - -static struct platform_driver __refdata sh_veu_pdrv = { - .remove = sh_veu_remove, - .driver = { - .name = "sh_veu", - }, -}; - -module_platform_driver_probe(sh_veu_pdrv, sh_veu_probe); - -MODULE_DESCRIPTION("sh-mobile VEU mem2mem driver"); -MODULE_AUTHOR("Guennadi Liakhovetski, <g.liakhovetski@gmx.de>"); -MODULE_LICENSE("GPL v2"); |