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mpv/vidix/sh_veu_vid.c

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/*
* VIDIX driver for SuperH Mobile VEU hardware block.
* Copyright (C) 2008 Magnus Damm
*
* Requires a kernel that exposes the VEU hardware block to user space
* using UIO. Available in upstream linux-2.6.27 or later.
*
* Tested using WVGA and QVGA panels with sh7722 VEU and sh7723 VEU2H.
*
* This file is part of MPlayer.
*
* MPlayer is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* MPlayer is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with MPlayer; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <stdio.h>
#include <unistd.h>
#include <string.h>
#include <stdlib.h>
#include <sys/mman.h>
#include <sys/time.h>
#include <sys/ioctl.h>
#include <fcntl.h>
#include <linux/fb.h>
#include <inttypes.h>
#include <unistd.h>
#include <errno.h>
#include "config.h"
#include "vidix.h"
#include "fourcc.h"
#include "dha.h"
static int fgets_with_openclose(char *fname, char *buf, size_t maxlen)
{
FILE *fp;
fp = fopen(fname, "r");
if (!fp)
return -1;
fgets(buf, maxlen, fp);
fclose(fp);
return strlen(buf);
}
struct uio_device {
char *name;
char *path;
int fd;
};
#define MAXNAMELEN 256
static int locate_uio_device(char *name, struct uio_device *udp)
{
char fname[MAXNAMELEN], buf[MAXNAMELEN];
char *tmp;
int uio_id;
uio_id = -1;
do {
uio_id++;
snprintf(fname, MAXNAMELEN, "/sys/class/uio/uio%d/name", uio_id);
if (fgets_with_openclose(fname, buf, MAXNAMELEN) < 0)
return -1;
} while (strncmp(name, buf, strlen(name)));
tmp = strchr(buf, '\n');
if (tmp)
*tmp = '\0';
udp->name = strdup(buf);
udp->path = strdup(fname);
udp->path[strlen(udp->path) - 5] = '\0';
snprintf(buf, MAXNAMELEN, "/dev/uio%d", uio_id);
udp->fd = open(buf, O_RDWR | O_SYNC);
if (udp->fd < 0)
return -1;
return 0;
}
struct uio_map {
unsigned long address;
unsigned long size;
void *iomem;
};
static int setup_uio_map(struct uio_device *udp, int nr, struct uio_map *ump)
{
char fname[MAXNAMELEN], buf[MAXNAMELEN];
snprintf(fname, MAXNAMELEN, "%s/maps/map%d/addr", udp->path, nr);
if (fgets_with_openclose(fname, buf, MAXNAMELEN) <= 0)
return -1;
ump->address = strtoul(buf, NULL, 0);
snprintf(fname, MAXNAMELEN, "%s/maps/map%d/size", udp->path, nr);
if (fgets_with_openclose(fname, buf, MAXNAMELEN) <= 0)
return -1;
ump->size = strtoul(buf, NULL, 0);
ump->iomem = mmap(0, ump->size,
PROT_READ|PROT_WRITE, MAP_SHARED,
udp->fd, nr * getpagesize());
if (ump->iomem == MAP_FAILED)
return -1;
return 0;
}
struct fb_info {
unsigned long width;
unsigned long height;
unsigned long bpp;
unsigned long line_length;
unsigned long address;
unsigned long size;
};
static int get_fb_info(char *device, struct fb_info *fip)
{
struct fb_var_screeninfo vinfo;
struct fb_fix_screeninfo finfo;
void *iomem;
int fd;
fd = open(device, O_RDWR);
if (fd < 0) {
perror("open");
return -1;
}
if (ioctl(fd, FBIOGET_VSCREENINFO, &vinfo) == -1) {
perror("ioctl(FBIOGET_VSCREENINFO)");
return -1;
}
fip->width = vinfo.xres;
fip->height = vinfo.yres;
fip->bpp = vinfo.bits_per_pixel;
if (ioctl(fd, FBIOGET_FSCREENINFO, &finfo) == -1) {
perror("ioctl(FBIOGET_FSCREENINFO)");
return -1;
}
fip->address = finfo.smem_start;
fip->size = finfo.smem_len;
fip->line_length = finfo.line_length;
iomem = mmap(0, fip->size, PROT_READ|PROT_WRITE, MAP_SHARED, fd, 0);
if (iomem == MAP_FAILED) {
perror("mmap");
return -1;
}
/* clear framebuffer */
memset(iomem, 0, fip->line_length * fip->height);
munmap(iomem, fip->size);
close(fd);
return 0;
}
#define VESTR 0x00 /* start register */
#define VESWR 0x10 /* src: line length */
#define VESSR 0x14 /* src: image size */
#define VSAYR 0x18 /* src: y/rgb plane address */
#define VSACR 0x1c /* src: c plane address */
#define VBSSR 0x20 /* bundle mode register */
#define VEDWR 0x30 /* dst: line length */
#define VDAYR 0x34 /* dst: y/rgb plane address */
#define VDACR 0x38 /* dst: c plane address */
#define VTRCR 0x50 /* transform control */
#define VRFCR 0x54 /* resize scale */
#define VRFSR 0x58 /* resize clip */
#define VENHR 0x5c /* enhance */
#define VFMCR 0x70 /* filter mode */
#define VVTCR 0x74 /* lowpass vertical */
#define VHTCR 0x78 /* lowpass horizontal */
#define VAPCR 0x80 /* color match */
#define VECCR 0x84 /* color replace */
#define VAFXR 0x90 /* fixed mode */
#define VSWPR 0x94 /* swap */
#define VEIER 0xa0 /* interrupt mask */
#define VEVTR 0xa4 /* interrupt event */
#define VSTAR 0xb0 /* status */
#define VBSRR 0xb4 /* reset */
#define VMCR00 0x200 /* color conversion matrix coefficient 00 */
#define VMCR01 0x204 /* color conversion matrix coefficient 01 */
#define VMCR02 0x208 /* color conversion matrix coefficient 02 */
#define VMCR10 0x20c /* color conversion matrix coefficient 10 */
#define VMCR11 0x210 /* color conversion matrix coefficient 11 */
#define VMCR12 0x214 /* color conversion matrix coefficient 12 */
#define VMCR20 0x218 /* color conversion matrix coefficient 20 */
#define VMCR21 0x21c /* color conversion matrix coefficient 21 */
#define VMCR22 0x220 /* color conversion matrix coefficient 22 */
#define VCOFFR 0x224 /* color conversion offset */
#define VCBR 0x228 /* color conversion clip */
/* Helper functions for reading registers. */
static unsigned long read_reg(struct uio_map *ump, int reg_offs)
{
volatile unsigned long *reg = ump->iomem;
return reg[reg_offs / 4];
}
static void write_reg(struct uio_map *ump, unsigned long value, int reg_offs)
{
volatile unsigned long *reg = ump->iomem;
reg[reg_offs / 4] = value;
}
static vidix_capability_t sh_veu_cap = {
"SuperH VEU driver",
"Magnus Damm",
TYPE_OUTPUT,
{ 0, 0, 0, 0 },
2560,
1920,
16,
16,
-1,
FLAG_UPSCALER|FLAG_DOWNSCALER,
-1,
-1,
{ 0, 0, 0, 0 }
};
/* global variables yuck */
static struct fb_info fbi;
static struct uio_device uio_dev;
static struct uio_map uio_mmio, uio_mem;
struct sh_veu_plane {
unsigned long width;
unsigned long height;
unsigned long stride;
unsigned long pos_x;
unsigned long pos_y;
};
static struct sh_veu_plane _src, _dst;
static vidix_playback_t my_info;
static int sh_veu_probe(int verbose, int force)
{
int ret;
ret = get_fb_info("/dev/fb0", &fbi);
if (ret < 0)
return ret;
if (fbi.bpp != 16) {
printf("sh_veu: only 16bpp supported\n");
return -1;
}
ret = locate_uio_device("VEU", &uio_dev);
if (ret < 0) {
printf("sh_veu: unable to locate matching UIO device\n");
return ret;
}
ret = setup_uio_map(&uio_dev, 0, &uio_mmio);
if (ret < 0) {
printf("sh_veu: cannot setup MMIO\n");
return ret;
}
ret = setup_uio_map(&uio_dev, 1, &uio_mem);
if (ret < 0) {
printf("sh_veu: cannot setup contiguous memory\n");
return ret;
}
printf("sh_veu: Using %s at %s on %lux%lu %ldbpp /dev/fb0\n",
uio_dev.name, uio_dev.path,
fbi.width, fbi.height, fbi.bpp);
return ret;
}
static void sh_veu_wait_irq(vidix_playback_t *info)
{
unsigned long n_pending;
/* Wait for an interrupt */
read(uio_dev.fd, &n_pending, sizeof(u_long));
write_reg(&uio_mmio, 0x100, VEVTR); /* ack int, write 0 to bit 0 */
}
static int sh_veu_is_veu2h(void)
{
return uio_mmio.size > 0xb8;
}
static unsigned long sh_veu_do_scale(struct uio_map *ump,
int vertical, int size_in,
int size_out, int crop_out)
{
unsigned long fixpoint, mant, frac, value, rep;
/* calculate FRAC and MANT */
do {
rep = mant = frac = 0;
if (size_in == size_out) {
if (crop_out != size_out)
mant = 1; /* needed for cropping */
break;
}
/* VEU2H special upscale */
if (sh_veu_is_veu2h() && size_out > size_in) {
fixpoint = (4096 * size_in) / size_out;
mant = fixpoint / 4096;
frac = fixpoint - (mant * 4096);
frac &= ~0x07;
switch (frac) {
case 0x800:
rep = 1;
break;
case 0x400:
rep = 3;
break;
case 0x200:
rep = 7;
break;
}
if (rep)
break;
}
fixpoint = (4096 * (size_in - 1)) / (size_out + 1);
mant = fixpoint / 4096;
frac = fixpoint - (mant * 4096);
if (frac & 0x07) {
frac &= ~0x07;
if (size_out > size_in)
frac -= 8; /* round down if scaling up */
else
frac += 8; /* round up if scaling down */
}
} while (0);
/* set scale */
value = read_reg(ump, VRFCR);
if (vertical) {
value &= ~0xffff0000;
value |= ((mant << 12) | frac) << 16;
} else {
value &= ~0xffff;
value |= (mant << 12) | frac;
}
write_reg(ump, value, VRFCR);
/* set clip */
value = read_reg(ump, VRFSR);
if (vertical) {
value &= ~0xffff0000;
value |= ((rep << 12) | crop_out) << 16;
} else {
value &= ~0xffff;
value |= (rep << 12) | crop_out;
}
write_reg(ump, value, VRFSR);
return (((size_in * crop_out) / size_out) + 0x03) & ~0x03;
}
static void sh_veu_setup_planes(vidix_playback_t *info,
struct sh_veu_plane *src,
struct sh_veu_plane *dst)
{
unsigned long addr, real_w, real_h;
src->width = info->src.w;
src->height = info->src.h;
src->stride = (info->src.w+15) & ~15;
dst->width = real_w = info->dest.w;
dst->height = real_h = info->dest.h;
dst->stride = fbi.line_length;
dst->pos_x = info->dest.x & ~0x03;
dst->pos_y = info->dest.y;
if ((dst->width + dst->pos_x) > fbi.width)
dst->width = fbi.width - dst->pos_x;
if ((dst->height + dst->pos_y) > fbi.height)
dst->height = fbi.height - dst->pos_y;
addr = fbi.address;
addr += dst->pos_x * (fbi.bpp / 8);
addr += dst->pos_y * dst->stride;
src->width = sh_veu_do_scale(&uio_mmio, 0, src->width,
real_w, dst->width);
src->height = sh_veu_do_scale(&uio_mmio, 1, src->height,
real_h, dst->height);
write_reg(&uio_mmio, src->stride, VESWR);
write_reg(&uio_mmio, src->width | (src->height << 16), VESSR);
write_reg(&uio_mmio, 0, VBSSR); /* not using bundle mode */
write_reg(&uio_mmio, dst->stride, VEDWR);
write_reg(&uio_mmio, addr, VDAYR);
write_reg(&uio_mmio, 0, VDACR); /* unused for RGB */
write_reg(&uio_mmio, 0x67, VSWPR);
write_reg(&uio_mmio, (6 << 16) | (0 << 14) | 2 | 4, VTRCR);
if (sh_veu_is_veu2h()) {
write_reg(&uio_mmio, 0x0cc5, VMCR00);
write_reg(&uio_mmio, 0x0950, VMCR01);
write_reg(&uio_mmio, 0x0000, VMCR02);
write_reg(&uio_mmio, 0x397f, VMCR10);
write_reg(&uio_mmio, 0x0950, VMCR11);
write_reg(&uio_mmio, 0x3ccd, VMCR12);
write_reg(&uio_mmio, 0x0000, VMCR20);
write_reg(&uio_mmio, 0x0950, VMCR21);
write_reg(&uio_mmio, 0x1023, VMCR22);
write_reg(&uio_mmio, 0x00800010, VCOFFR);
}
write_reg(&uio_mmio, 1, VEIER); /* enable interrupt in VEU */
}
static void sh_veu_blit(vidix_playback_t *info, int frame)
{
unsigned long enable = 1;
unsigned long addr;
addr = uio_mem.address + info->offsets[frame];
write_reg(&uio_mmio, addr + info->offset.y, VSAYR);
write_reg(&uio_mmio, addr + info->offset.u, VSACR);
/* Enable interrupt in UIO driver */
write(uio_dev.fd, &enable, sizeof(u_long));
write_reg(&uio_mmio, 1, VESTR); /* start operation */
}
static int sh_veu_init(void)
{
write_reg(&uio_mmio, 0x100, VBSRR); /* reset VEU */
return 0;
}
static void sh_veu_destroy(void)
{
}
static int sh_veu_get_caps(vidix_capability_t *to)
{
memcpy(to, &sh_veu_cap, sizeof(vidix_capability_t));
return 0;
}
static int sh_veu_query_fourcc(vidix_fourcc_t *to)
{
if (to->fourcc == IMGFMT_NV12) {
to->depth = VID_DEPTH_ALL;
to->flags = VID_CAP_EXPAND | VID_CAP_SHRINK;
return 0;
}
to->depth = to->flags = 0;
return ENOSYS;
}
static int sh_veu_config_playback(vidix_playback_t *info)
{
unsigned int i, y_pitch;
switch (info->fourcc) {
case IMGFMT_NV12:
y_pitch = (info->src.w + 15) & ~15;
info->offset.y = 0;
info->offset.u = y_pitch * info->src.h;
info->frame_size = info->offset.u + info->offset.u / 2;
break;
default:
return ENOTSUP;
}
info->num_frames = uio_mem.size / info->frame_size;
if (info->num_frames > VID_PLAY_MAXFRAMES)
info->num_frames = VID_PLAY_MAXFRAMES;
if (!info->num_frames) {
printf("sh_veu: %d is not enough memory for %d bytes frame\n",
(int)uio_mem.size, (int)info->frame_size);
return ENOMEM;
}
info->dga_addr = uio_mem.iomem;
info->dest.pitch.y = info->dest.pitch.u = info->dest.pitch.v = 16;
for (i = 0; i < info->num_frames; i++)
info->offsets[i] = info->frame_size * i;
my_info = *info;
printf("sh_veu: %d frames * %d bytes, total size = %d\n",
(int)info->num_frames, (int)info->frame_size,
(int)uio_mem.size);
sh_veu_setup_planes(info, &_src, &_dst);
printf("sh_veu: %dx%d->%dx%d@%dx%d -> %dx%d->%dx%d@%dx%d \n",
(int)info->src.w, (int)info->src.h,
(int)info->dest.w, (int)info->dest.h,
(int)info->dest.x, (int)info->dest.y,
(int)_src.width, (int)_src.height,
(int)_dst.width, (int)_dst.height,
(int)_dst.pos_x, (int)_dst.pos_y);
return 0;
}
static int sh_veu_playback_on(void)
{
return 0;
}
static int sh_veu_playback_off(void)
{
return 0;
}
static int sh_veu_first_frame = 1;
static int sh_veu_frame_sel(unsigned int frame)
{
if (!sh_veu_first_frame)
sh_veu_wait_irq(&my_info);
sh_veu_blit(&my_info, frame);
sh_veu_first_frame = 0;
return 0;
}
VDXDriver sh_veu_drv = {
"sh_veu",
NULL,
.probe = sh_veu_probe,
.get_caps = sh_veu_get_caps,
.query_fourcc = sh_veu_query_fourcc,
.init = sh_veu_init,
.destroy = sh_veu_destroy,
.config_playback = sh_veu_config_playback,
.playback_on = sh_veu_playback_on,
.playback_off = sh_veu_playback_off,
.frame_sel = sh_veu_frame_sel,
};
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