mirror of https://gitee.com/openkylin/linux.git
1494 lines
39 KiB
C
1494 lines
39 KiB
C
/*
|
|
* SuperH Video Output Unit (VOU) driver
|
|
*
|
|
* Copyright (C) 2010, Guennadi Liakhovetski <g.liakhovetski@gmx.de>
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License version 2 as
|
|
* published by the Free Software Foundation.
|
|
*/
|
|
|
|
#include <linux/dma-mapping.h>
|
|
#include <linux/delay.h>
|
|
#include <linux/errno.h>
|
|
#include <linux/fs.h>
|
|
#include <linux/i2c.h>
|
|
#include <linux/init.h>
|
|
#include <linux/interrupt.h>
|
|
#include <linux/kernel.h>
|
|
#include <linux/platform_device.h>
|
|
#include <linux/pm_runtime.h>
|
|
#include <linux/slab.h>
|
|
#include <linux/version.h>
|
|
#include <linux/videodev2.h>
|
|
|
|
#include <media/sh_vou.h>
|
|
#include <media/v4l2-common.h>
|
|
#include <media/v4l2-device.h>
|
|
#include <media/v4l2-ioctl.h>
|
|
#include <media/v4l2-mediabus.h>
|
|
#include <media/videobuf-dma-contig.h>
|
|
|
|
/* Mirror addresses are not available for all registers */
|
|
#define VOUER 0
|
|
#define VOUCR 4
|
|
#define VOUSTR 8
|
|
#define VOUVCR 0xc
|
|
#define VOUISR 0x10
|
|
#define VOUBCR 0x14
|
|
#define VOUDPR 0x18
|
|
#define VOUDSR 0x1c
|
|
#define VOUVPR 0x20
|
|
#define VOUIR 0x24
|
|
#define VOUSRR 0x28
|
|
#define VOUMSR 0x2c
|
|
#define VOUHIR 0x30
|
|
#define VOUDFR 0x34
|
|
#define VOUAD1R 0x38
|
|
#define VOUAD2R 0x3c
|
|
#define VOUAIR 0x40
|
|
#define VOUSWR 0x44
|
|
#define VOURCR 0x48
|
|
#define VOURPR 0x50
|
|
|
|
enum sh_vou_status {
|
|
SH_VOU_IDLE,
|
|
SH_VOU_INITIALISING,
|
|
SH_VOU_RUNNING,
|
|
};
|
|
|
|
#define VOU_MAX_IMAGE_WIDTH 720
|
|
#define VOU_MAX_IMAGE_HEIGHT 576
|
|
|
|
struct sh_vou_device {
|
|
struct v4l2_device v4l2_dev;
|
|
struct video_device *vdev;
|
|
atomic_t use_count;
|
|
struct sh_vou_pdata *pdata;
|
|
spinlock_t lock;
|
|
void __iomem *base;
|
|
/* State information */
|
|
struct v4l2_pix_format pix;
|
|
struct v4l2_rect rect;
|
|
struct list_head queue;
|
|
v4l2_std_id std;
|
|
int pix_idx;
|
|
struct videobuf_buffer *active;
|
|
enum sh_vou_status status;
|
|
struct mutex fop_lock;
|
|
};
|
|
|
|
struct sh_vou_file {
|
|
struct videobuf_queue vbq;
|
|
};
|
|
|
|
/* Register access routines for sides A, B and mirror addresses */
|
|
static void sh_vou_reg_a_write(struct sh_vou_device *vou_dev, unsigned int reg,
|
|
u32 value)
|
|
{
|
|
__raw_writel(value, vou_dev->base + reg);
|
|
}
|
|
|
|
static void sh_vou_reg_ab_write(struct sh_vou_device *vou_dev, unsigned int reg,
|
|
u32 value)
|
|
{
|
|
__raw_writel(value, vou_dev->base + reg);
|
|
__raw_writel(value, vou_dev->base + reg + 0x1000);
|
|
}
|
|
|
|
static void sh_vou_reg_m_write(struct sh_vou_device *vou_dev, unsigned int reg,
|
|
u32 value)
|
|
{
|
|
__raw_writel(value, vou_dev->base + reg + 0x2000);
|
|
}
|
|
|
|
static u32 sh_vou_reg_a_read(struct sh_vou_device *vou_dev, unsigned int reg)
|
|
{
|
|
return __raw_readl(vou_dev->base + reg);
|
|
}
|
|
|
|
static void sh_vou_reg_a_set(struct sh_vou_device *vou_dev, unsigned int reg,
|
|
u32 value, u32 mask)
|
|
{
|
|
u32 old = __raw_readl(vou_dev->base + reg);
|
|
|
|
value = (value & mask) | (old & ~mask);
|
|
__raw_writel(value, vou_dev->base + reg);
|
|
}
|
|
|
|
static void sh_vou_reg_b_set(struct sh_vou_device *vou_dev, unsigned int reg,
|
|
u32 value, u32 mask)
|
|
{
|
|
sh_vou_reg_a_set(vou_dev, reg + 0x1000, value, mask);
|
|
}
|
|
|
|
static void sh_vou_reg_ab_set(struct sh_vou_device *vou_dev, unsigned int reg,
|
|
u32 value, u32 mask)
|
|
{
|
|
sh_vou_reg_a_set(vou_dev, reg, value, mask);
|
|
sh_vou_reg_b_set(vou_dev, reg, value, mask);
|
|
}
|
|
|
|
struct sh_vou_fmt {
|
|
u32 pfmt;
|
|
char *desc;
|
|
unsigned char bpp;
|
|
unsigned char rgb;
|
|
unsigned char yf;
|
|
unsigned char pkf;
|
|
};
|
|
|
|
/* Further pixel formats can be added */
|
|
static struct sh_vou_fmt vou_fmt[] = {
|
|
{
|
|
.pfmt = V4L2_PIX_FMT_NV12,
|
|
.bpp = 12,
|
|
.desc = "YVU420 planar",
|
|
.yf = 0,
|
|
.rgb = 0,
|
|
},
|
|
{
|
|
.pfmt = V4L2_PIX_FMT_NV16,
|
|
.bpp = 16,
|
|
.desc = "YVYU planar",
|
|
.yf = 1,
|
|
.rgb = 0,
|
|
},
|
|
{
|
|
.pfmt = V4L2_PIX_FMT_RGB24,
|
|
.bpp = 24,
|
|
.desc = "RGB24",
|
|
.pkf = 2,
|
|
.rgb = 1,
|
|
},
|
|
{
|
|
.pfmt = V4L2_PIX_FMT_RGB565,
|
|
.bpp = 16,
|
|
.desc = "RGB565",
|
|
.pkf = 3,
|
|
.rgb = 1,
|
|
},
|
|
{
|
|
.pfmt = V4L2_PIX_FMT_RGB565X,
|
|
.bpp = 16,
|
|
.desc = "RGB565 byteswapped",
|
|
.pkf = 3,
|
|
.rgb = 1,
|
|
},
|
|
};
|
|
|
|
static void sh_vou_schedule_next(struct sh_vou_device *vou_dev,
|
|
struct videobuf_buffer *vb)
|
|
{
|
|
dma_addr_t addr1, addr2;
|
|
|
|
addr1 = videobuf_to_dma_contig(vb);
|
|
switch (vou_dev->pix.pixelformat) {
|
|
case V4L2_PIX_FMT_NV12:
|
|
case V4L2_PIX_FMT_NV16:
|
|
addr2 = addr1 + vou_dev->pix.width * vou_dev->pix.height;
|
|
break;
|
|
default:
|
|
addr2 = 0;
|
|
}
|
|
|
|
sh_vou_reg_m_write(vou_dev, VOUAD1R, addr1);
|
|
sh_vou_reg_m_write(vou_dev, VOUAD2R, addr2);
|
|
}
|
|
|
|
static void sh_vou_stream_start(struct sh_vou_device *vou_dev,
|
|
struct videobuf_buffer *vb)
|
|
{
|
|
unsigned int row_coeff;
|
|
#ifdef __LITTLE_ENDIAN
|
|
u32 dataswap = 7;
|
|
#else
|
|
u32 dataswap = 0;
|
|
#endif
|
|
|
|
switch (vou_dev->pix.pixelformat) {
|
|
case V4L2_PIX_FMT_NV12:
|
|
case V4L2_PIX_FMT_NV16:
|
|
row_coeff = 1;
|
|
break;
|
|
case V4L2_PIX_FMT_RGB565:
|
|
dataswap ^= 1;
|
|
case V4L2_PIX_FMT_RGB565X:
|
|
row_coeff = 2;
|
|
break;
|
|
case V4L2_PIX_FMT_RGB24:
|
|
row_coeff = 3;
|
|
break;
|
|
}
|
|
|
|
sh_vou_reg_a_write(vou_dev, VOUSWR, dataswap);
|
|
sh_vou_reg_ab_write(vou_dev, VOUAIR, vou_dev->pix.width * row_coeff);
|
|
sh_vou_schedule_next(vou_dev, vb);
|
|
}
|
|
|
|
static void free_buffer(struct videobuf_queue *vq, struct videobuf_buffer *vb)
|
|
{
|
|
BUG_ON(in_interrupt());
|
|
|
|
/* Wait until this buffer is no longer in STATE_QUEUED or STATE_ACTIVE */
|
|
videobuf_waiton(vq, vb, 0, 0);
|
|
videobuf_dma_contig_free(vq, vb);
|
|
vb->state = VIDEOBUF_NEEDS_INIT;
|
|
}
|
|
|
|
/* Locking: caller holds fop_lock mutex */
|
|
static int sh_vou_buf_setup(struct videobuf_queue *vq, unsigned int *count,
|
|
unsigned int *size)
|
|
{
|
|
struct video_device *vdev = vq->priv_data;
|
|
struct sh_vou_device *vou_dev = video_get_drvdata(vdev);
|
|
|
|
*size = vou_fmt[vou_dev->pix_idx].bpp * vou_dev->pix.width *
|
|
vou_dev->pix.height / 8;
|
|
|
|
if (*count < 2)
|
|
*count = 2;
|
|
|
|
/* Taking into account maximum frame size, *count will stay >= 2 */
|
|
if (PAGE_ALIGN(*size) * *count > 4 * 1024 * 1024)
|
|
*count = 4 * 1024 * 1024 / PAGE_ALIGN(*size);
|
|
|
|
dev_dbg(vq->dev, "%s(): count=%d, size=%d\n", __func__, *count, *size);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* Locking: caller holds fop_lock mutex */
|
|
static int sh_vou_buf_prepare(struct videobuf_queue *vq,
|
|
struct videobuf_buffer *vb,
|
|
enum v4l2_field field)
|
|
{
|
|
struct video_device *vdev = vq->priv_data;
|
|
struct sh_vou_device *vou_dev = video_get_drvdata(vdev);
|
|
struct v4l2_pix_format *pix = &vou_dev->pix;
|
|
int bytes_per_line = vou_fmt[vou_dev->pix_idx].bpp * pix->width / 8;
|
|
int ret;
|
|
|
|
dev_dbg(vq->dev, "%s()\n", __func__);
|
|
|
|
if (vb->width != pix->width ||
|
|
vb->height != pix->height ||
|
|
vb->field != pix->field) {
|
|
vb->width = pix->width;
|
|
vb->height = pix->height;
|
|
vb->field = field;
|
|
if (vb->state != VIDEOBUF_NEEDS_INIT)
|
|
free_buffer(vq, vb);
|
|
}
|
|
|
|
vb->size = vb->height * bytes_per_line;
|
|
if (vb->baddr && vb->bsize < vb->size) {
|
|
/* User buffer too small */
|
|
dev_warn(vq->dev, "User buffer too small: [%u] @ %lx\n",
|
|
vb->bsize, vb->baddr);
|
|
return -EINVAL;
|
|
}
|
|
|
|
if (vb->state == VIDEOBUF_NEEDS_INIT) {
|
|
ret = videobuf_iolock(vq, vb, NULL);
|
|
if (ret < 0) {
|
|
dev_warn(vq->dev, "IOLOCK buf-type %d: %d\n",
|
|
vb->memory, ret);
|
|
return ret;
|
|
}
|
|
vb->state = VIDEOBUF_PREPARED;
|
|
}
|
|
|
|
dev_dbg(vq->dev,
|
|
"%s(): fmt #%d, %u bytes per line, phys 0x%x, type %d, state %d\n",
|
|
__func__, vou_dev->pix_idx, bytes_per_line,
|
|
videobuf_to_dma_contig(vb), vb->memory, vb->state);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* Locking: caller holds fop_lock mutex and vq->irqlock spinlock */
|
|
static void sh_vou_buf_queue(struct videobuf_queue *vq,
|
|
struct videobuf_buffer *vb)
|
|
{
|
|
struct video_device *vdev = vq->priv_data;
|
|
struct sh_vou_device *vou_dev = video_get_drvdata(vdev);
|
|
|
|
dev_dbg(vq->dev, "%s()\n", __func__);
|
|
|
|
vb->state = VIDEOBUF_QUEUED;
|
|
list_add_tail(&vb->queue, &vou_dev->queue);
|
|
|
|
if (vou_dev->status == SH_VOU_RUNNING) {
|
|
return;
|
|
} else if (!vou_dev->active) {
|
|
vou_dev->active = vb;
|
|
/* Start from side A: we use mirror addresses, so, set B */
|
|
sh_vou_reg_a_write(vou_dev, VOURPR, 1);
|
|
dev_dbg(vq->dev, "%s: first buffer status 0x%x\n", __func__,
|
|
sh_vou_reg_a_read(vou_dev, VOUSTR));
|
|
sh_vou_schedule_next(vou_dev, vb);
|
|
/* Only activate VOU after the second buffer */
|
|
} else if (vou_dev->active->queue.next == &vb->queue) {
|
|
/* Second buffer - initialise register side B */
|
|
sh_vou_reg_a_write(vou_dev, VOURPR, 0);
|
|
sh_vou_stream_start(vou_dev, vb);
|
|
|
|
/* Register side switching with frame VSYNC */
|
|
sh_vou_reg_a_write(vou_dev, VOURCR, 5);
|
|
dev_dbg(vq->dev, "%s: second buffer status 0x%x\n", __func__,
|
|
sh_vou_reg_a_read(vou_dev, VOUSTR));
|
|
|
|
/* Enable End-of-Frame (VSYNC) interrupts */
|
|
sh_vou_reg_a_write(vou_dev, VOUIR, 0x10004);
|
|
/* Two buffers on the queue - activate the hardware */
|
|
|
|
vou_dev->status = SH_VOU_RUNNING;
|
|
sh_vou_reg_a_write(vou_dev, VOUER, 0x107);
|
|
}
|
|
}
|
|
|
|
static void sh_vou_buf_release(struct videobuf_queue *vq,
|
|
struct videobuf_buffer *vb)
|
|
{
|
|
struct video_device *vdev = vq->priv_data;
|
|
struct sh_vou_device *vou_dev = video_get_drvdata(vdev);
|
|
unsigned long flags;
|
|
|
|
dev_dbg(vq->dev, "%s()\n", __func__);
|
|
|
|
spin_lock_irqsave(&vou_dev->lock, flags);
|
|
|
|
if (vou_dev->active == vb) {
|
|
/* disable output */
|
|
sh_vou_reg_a_set(vou_dev, VOUER, 0, 1);
|
|
/* ...but the current frame will complete */
|
|
sh_vou_reg_a_set(vou_dev, VOUIR, 0, 0x30000);
|
|
vou_dev->active = NULL;
|
|
}
|
|
|
|
if ((vb->state == VIDEOBUF_ACTIVE || vb->state == VIDEOBUF_QUEUED)) {
|
|
vb->state = VIDEOBUF_ERROR;
|
|
list_del(&vb->queue);
|
|
}
|
|
|
|
spin_unlock_irqrestore(&vou_dev->lock, flags);
|
|
|
|
free_buffer(vq, vb);
|
|
}
|
|
|
|
static struct videobuf_queue_ops sh_vou_video_qops = {
|
|
.buf_setup = sh_vou_buf_setup,
|
|
.buf_prepare = sh_vou_buf_prepare,
|
|
.buf_queue = sh_vou_buf_queue,
|
|
.buf_release = sh_vou_buf_release,
|
|
};
|
|
|
|
/* Video IOCTLs */
|
|
static int sh_vou_querycap(struct file *file, void *priv,
|
|
struct v4l2_capability *cap)
|
|
{
|
|
struct sh_vou_file *vou_file = priv;
|
|
|
|
dev_dbg(vou_file->vbq.dev, "%s()\n", __func__);
|
|
|
|
strlcpy(cap->card, "SuperH VOU", sizeof(cap->card));
|
|
cap->version = KERNEL_VERSION(0, 1, 0);
|
|
cap->capabilities = V4L2_CAP_VIDEO_OUTPUT | V4L2_CAP_STREAMING;
|
|
return 0;
|
|
}
|
|
|
|
/* Enumerate formats, that the device can accept from the user */
|
|
static int sh_vou_enum_fmt_vid_out(struct file *file, void *priv,
|
|
struct v4l2_fmtdesc *fmt)
|
|
{
|
|
struct sh_vou_file *vou_file = priv;
|
|
|
|
if (fmt->index >= ARRAY_SIZE(vou_fmt))
|
|
return -EINVAL;
|
|
|
|
dev_dbg(vou_file->vbq.dev, "%s()\n", __func__);
|
|
|
|
fmt->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
|
|
strlcpy(fmt->description, vou_fmt[fmt->index].desc,
|
|
sizeof(fmt->description));
|
|
fmt->pixelformat = vou_fmt[fmt->index].pfmt;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int sh_vou_g_fmt_vid_out(struct file *file, void *priv,
|
|
struct v4l2_format *fmt)
|
|
{
|
|
struct video_device *vdev = video_devdata(file);
|
|
struct sh_vou_device *vou_dev = video_get_drvdata(vdev);
|
|
|
|
dev_dbg(vou_dev->v4l2_dev.dev, "%s()\n", __func__);
|
|
|
|
fmt->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
|
|
fmt->fmt.pix = vou_dev->pix;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const unsigned char vou_scale_h_num[] = {1, 9, 2, 9, 4};
|
|
static const unsigned char vou_scale_h_den[] = {1, 8, 1, 4, 1};
|
|
static const unsigned char vou_scale_h_fld[] = {0, 2, 1, 3};
|
|
static const unsigned char vou_scale_v_num[] = {1, 2, 4};
|
|
static const unsigned char vou_scale_v_den[] = {1, 1, 1};
|
|
static const unsigned char vou_scale_v_fld[] = {0, 1};
|
|
|
|
static void sh_vou_configure_geometry(struct sh_vou_device *vou_dev,
|
|
int pix_idx, int w_idx, int h_idx)
|
|
{
|
|
struct sh_vou_fmt *fmt = vou_fmt + pix_idx;
|
|
unsigned int black_left, black_top, width_max, height_max,
|
|
frame_in_height, frame_out_height, frame_out_top;
|
|
struct v4l2_rect *rect = &vou_dev->rect;
|
|
struct v4l2_pix_format *pix = &vou_dev->pix;
|
|
u32 vouvcr = 0, dsr_h, dsr_v;
|
|
|
|
if (vou_dev->std & V4L2_STD_525_60) {
|
|
width_max = 858;
|
|
height_max = 262;
|
|
} else {
|
|
width_max = 864;
|
|
height_max = 312;
|
|
}
|
|
|
|
frame_in_height = pix->height / 2;
|
|
frame_out_height = rect->height / 2;
|
|
frame_out_top = rect->top / 2;
|
|
|
|
/*
|
|
* Cropping scheme: max useful image is 720x480, and the total video
|
|
* area is 858x525 (NTSC) or 864x625 (PAL). AK8813 / 8814 starts
|
|
* sampling data beginning with fixed 276th (NTSC) / 288th (PAL) clock,
|
|
* of which the first 33 / 25 clocks HSYNC must be held active. This
|
|
* has to be configured in CR[HW]. 1 pixel equals 2 clock periods.
|
|
* This gives CR[HW] = 16 / 12, VPR[HVP] = 138 / 144, which gives
|
|
* exactly 858 - 138 = 864 - 144 = 720! We call the out-of-display area,
|
|
* beyond DSR, specified on the left and top by the VPR register "black
|
|
* pixels" and out-of-image area (DPR) "background pixels." We fix VPR
|
|
* at 138 / 144 : 20, because that's the HSYNC timing, that our first
|
|
* client requires, and that's exactly what leaves us 720 pixels for the
|
|
* image; we leave VPR[VVP] at default 20 for now, because the client
|
|
* doesn't seem to have any special requirements for it. Otherwise we
|
|
* could also set it to max - 240 = 22 / 72. Thus VPR depends only on
|
|
* the selected standard, and DPR and DSR are selected according to
|
|
* cropping. Q: how does the client detect the first valid line? Does
|
|
* HSYNC stay inactive during invalid (black) lines?
|
|
*/
|
|
black_left = width_max - VOU_MAX_IMAGE_WIDTH;
|
|
black_top = 20;
|
|
|
|
dsr_h = rect->width + rect->left;
|
|
dsr_v = frame_out_height + frame_out_top;
|
|
|
|
dev_dbg(vou_dev->v4l2_dev.dev,
|
|
"image %ux%u, black %u:%u, offset %u:%u, display %ux%u\n",
|
|
pix->width, frame_in_height, black_left, black_top,
|
|
rect->left, frame_out_top, dsr_h, dsr_v);
|
|
|
|
/* VOUISR height - half of a frame height in frame mode */
|
|
sh_vou_reg_ab_write(vou_dev, VOUISR, (pix->width << 16) | frame_in_height);
|
|
sh_vou_reg_ab_write(vou_dev, VOUVPR, (black_left << 16) | black_top);
|
|
sh_vou_reg_ab_write(vou_dev, VOUDPR, (rect->left << 16) | frame_out_top);
|
|
sh_vou_reg_ab_write(vou_dev, VOUDSR, (dsr_h << 16) | dsr_v);
|
|
|
|
/*
|
|
* if necessary, we could set VOUHIR to
|
|
* max(black_left + dsr_h, width_max) here
|
|
*/
|
|
|
|
if (w_idx)
|
|
vouvcr |= (1 << 15) | (vou_scale_h_fld[w_idx - 1] << 4);
|
|
if (h_idx)
|
|
vouvcr |= (1 << 14) | vou_scale_v_fld[h_idx - 1];
|
|
|
|
dev_dbg(vou_dev->v4l2_dev.dev, "%s: scaling 0x%x\n", fmt->desc, vouvcr);
|
|
|
|
/* To produce a colour bar for testing set bit 23 of VOUVCR */
|
|
sh_vou_reg_ab_write(vou_dev, VOUVCR, vouvcr);
|
|
sh_vou_reg_ab_write(vou_dev, VOUDFR,
|
|
fmt->pkf | (fmt->yf << 8) | (fmt->rgb << 16));
|
|
}
|
|
|
|
struct sh_vou_geometry {
|
|
struct v4l2_rect output;
|
|
unsigned int in_width;
|
|
unsigned int in_height;
|
|
int scale_idx_h;
|
|
int scale_idx_v;
|
|
};
|
|
|
|
/*
|
|
* Find input geometry, that we can use to produce output, closest to the
|
|
* requested rectangle, using VOU scaling
|
|
*/
|
|
static void vou_adjust_input(struct sh_vou_geometry *geo, v4l2_std_id std)
|
|
{
|
|
/* The compiler cannot know, that best and idx will indeed be set */
|
|
unsigned int best_err = UINT_MAX, best = 0, img_height_max;
|
|
int i, idx = 0;
|
|
|
|
if (std & V4L2_STD_525_60)
|
|
img_height_max = 480;
|
|
else
|
|
img_height_max = 576;
|
|
|
|
/* Image width must be a multiple of 4 */
|
|
v4l_bound_align_image(&geo->in_width, 0, VOU_MAX_IMAGE_WIDTH, 2,
|
|
&geo->in_height, 0, img_height_max, 1, 0);
|
|
|
|
/* Select scales to come as close as possible to the output image */
|
|
for (i = ARRAY_SIZE(vou_scale_h_num) - 1; i >= 0; i--) {
|
|
unsigned int err;
|
|
unsigned int found = geo->output.width * vou_scale_h_den[i] /
|
|
vou_scale_h_num[i];
|
|
|
|
if (found > VOU_MAX_IMAGE_WIDTH)
|
|
/* scales increase */
|
|
break;
|
|
|
|
err = abs(found - geo->in_width);
|
|
if (err < best_err) {
|
|
best_err = err;
|
|
idx = i;
|
|
best = found;
|
|
}
|
|
if (!err)
|
|
break;
|
|
}
|
|
|
|
geo->in_width = best;
|
|
geo->scale_idx_h = idx;
|
|
|
|
best_err = UINT_MAX;
|
|
|
|
/* This loop can be replaced with one division */
|
|
for (i = ARRAY_SIZE(vou_scale_v_num) - 1; i >= 0; i--) {
|
|
unsigned int err;
|
|
unsigned int found = geo->output.height * vou_scale_v_den[i] /
|
|
vou_scale_v_num[i];
|
|
|
|
if (found > img_height_max)
|
|
/* scales increase */
|
|
break;
|
|
|
|
err = abs(found - geo->in_height);
|
|
if (err < best_err) {
|
|
best_err = err;
|
|
idx = i;
|
|
best = found;
|
|
}
|
|
if (!err)
|
|
break;
|
|
}
|
|
|
|
geo->in_height = best;
|
|
geo->scale_idx_v = idx;
|
|
}
|
|
|
|
/*
|
|
* Find output geometry, that we can produce, using VOU scaling, closest to
|
|
* the requested rectangle
|
|
*/
|
|
static void vou_adjust_output(struct sh_vou_geometry *geo, v4l2_std_id std)
|
|
{
|
|
unsigned int best_err = UINT_MAX, best, width_max, height_max,
|
|
img_height_max;
|
|
int i, idx;
|
|
|
|
if (std & V4L2_STD_525_60) {
|
|
width_max = 858;
|
|
height_max = 262 * 2;
|
|
img_height_max = 480;
|
|
} else {
|
|
width_max = 864;
|
|
height_max = 312 * 2;
|
|
img_height_max = 576;
|
|
}
|
|
|
|
/* Select scales to come as close as possible to the output image */
|
|
for (i = 0; i < ARRAY_SIZE(vou_scale_h_num); i++) {
|
|
unsigned int err;
|
|
unsigned int found = geo->in_width * vou_scale_h_num[i] /
|
|
vou_scale_h_den[i];
|
|
|
|
if (found > VOU_MAX_IMAGE_WIDTH)
|
|
/* scales increase */
|
|
break;
|
|
|
|
err = abs(found - geo->output.width);
|
|
if (err < best_err) {
|
|
best_err = err;
|
|
idx = i;
|
|
best = found;
|
|
}
|
|
if (!err)
|
|
break;
|
|
}
|
|
|
|
geo->output.width = best;
|
|
geo->scale_idx_h = idx;
|
|
if (geo->output.left + best > width_max)
|
|
geo->output.left = width_max - best;
|
|
|
|
pr_debug("%s(): W %u * %u/%u = %u\n", __func__, geo->in_width,
|
|
vou_scale_h_num[idx], vou_scale_h_den[idx], best);
|
|
|
|
best_err = UINT_MAX;
|
|
|
|
/* This loop can be replaced with one division */
|
|
for (i = 0; i < ARRAY_SIZE(vou_scale_v_num); i++) {
|
|
unsigned int err;
|
|
unsigned int found = geo->in_height * vou_scale_v_num[i] /
|
|
vou_scale_v_den[i];
|
|
|
|
if (found > img_height_max)
|
|
/* scales increase */
|
|
break;
|
|
|
|
err = abs(found - geo->output.height);
|
|
if (err < best_err) {
|
|
best_err = err;
|
|
idx = i;
|
|
best = found;
|
|
}
|
|
if (!err)
|
|
break;
|
|
}
|
|
|
|
geo->output.height = best;
|
|
geo->scale_idx_v = idx;
|
|
if (geo->output.top + best > height_max)
|
|
geo->output.top = height_max - best;
|
|
|
|
pr_debug("%s(): H %u * %u/%u = %u\n", __func__, geo->in_height,
|
|
vou_scale_v_num[idx], vou_scale_v_den[idx], best);
|
|
}
|
|
|
|
static int sh_vou_s_fmt_vid_out(struct file *file, void *priv,
|
|
struct v4l2_format *fmt)
|
|
{
|
|
struct video_device *vdev = video_devdata(file);
|
|
struct sh_vou_device *vou_dev = video_get_drvdata(vdev);
|
|
struct v4l2_pix_format *pix = &fmt->fmt.pix;
|
|
unsigned int img_height_max;
|
|
int pix_idx;
|
|
struct sh_vou_geometry geo;
|
|
struct v4l2_mbus_framefmt mbfmt = {
|
|
/* Revisit: is this the correct code? */
|
|
.code = V4L2_MBUS_FMT_YUYV8_2X8,
|
|
.field = V4L2_FIELD_INTERLACED,
|
|
.colorspace = V4L2_COLORSPACE_SMPTE170M,
|
|
};
|
|
int ret;
|
|
|
|
dev_dbg(vou_dev->v4l2_dev.dev, "%s(): %ux%u -> %ux%u\n", __func__,
|
|
vou_dev->rect.width, vou_dev->rect.height,
|
|
pix->width, pix->height);
|
|
|
|
if (pix->field == V4L2_FIELD_ANY)
|
|
pix->field = V4L2_FIELD_NONE;
|
|
|
|
if (fmt->type != V4L2_BUF_TYPE_VIDEO_OUTPUT ||
|
|
pix->field != V4L2_FIELD_NONE)
|
|
return -EINVAL;
|
|
|
|
for (pix_idx = 0; pix_idx < ARRAY_SIZE(vou_fmt); pix_idx++)
|
|
if (vou_fmt[pix_idx].pfmt == pix->pixelformat)
|
|
break;
|
|
|
|
if (pix_idx == ARRAY_SIZE(vou_fmt))
|
|
return -EINVAL;
|
|
|
|
if (vou_dev->std & V4L2_STD_525_60)
|
|
img_height_max = 480;
|
|
else
|
|
img_height_max = 576;
|
|
|
|
/* Image width must be a multiple of 4 */
|
|
v4l_bound_align_image(&pix->width, 0, VOU_MAX_IMAGE_WIDTH, 2,
|
|
&pix->height, 0, img_height_max, 1, 0);
|
|
|
|
geo.in_width = pix->width;
|
|
geo.in_height = pix->height;
|
|
geo.output = vou_dev->rect;
|
|
|
|
vou_adjust_output(&geo, vou_dev->std);
|
|
|
|
mbfmt.width = geo.output.width;
|
|
mbfmt.height = geo.output.height;
|
|
ret = v4l2_device_call_until_err(&vou_dev->v4l2_dev, 0, video,
|
|
s_mbus_fmt, &mbfmt);
|
|
/* Must be implemented, so, don't check for -ENOIOCTLCMD */
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
dev_dbg(vou_dev->v4l2_dev.dev, "%s(): %ux%u -> %ux%u\n", __func__,
|
|
geo.output.width, geo.output.height, mbfmt.width, mbfmt.height);
|
|
|
|
/* Sanity checks */
|
|
if ((unsigned)mbfmt.width > VOU_MAX_IMAGE_WIDTH ||
|
|
(unsigned)mbfmt.height > img_height_max ||
|
|
mbfmt.code != V4L2_MBUS_FMT_YUYV8_2X8)
|
|
return -EIO;
|
|
|
|
if (mbfmt.width != geo.output.width ||
|
|
mbfmt.height != geo.output.height) {
|
|
geo.output.width = mbfmt.width;
|
|
geo.output.height = mbfmt.height;
|
|
|
|
vou_adjust_input(&geo, vou_dev->std);
|
|
}
|
|
|
|
/* We tried to preserve output rectangle, but it could have changed */
|
|
vou_dev->rect = geo.output;
|
|
pix->width = geo.in_width;
|
|
pix->height = geo.in_height;
|
|
|
|
dev_dbg(vou_dev->v4l2_dev.dev, "%s(): %ux%u\n", __func__,
|
|
pix->width, pix->height);
|
|
|
|
vou_dev->pix_idx = pix_idx;
|
|
|
|
vou_dev->pix = *pix;
|
|
|
|
sh_vou_configure_geometry(vou_dev, pix_idx,
|
|
geo.scale_idx_h, geo.scale_idx_v);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int sh_vou_try_fmt_vid_out(struct file *file, void *priv,
|
|
struct v4l2_format *fmt)
|
|
{
|
|
struct sh_vou_file *vou_file = priv;
|
|
struct v4l2_pix_format *pix = &fmt->fmt.pix;
|
|
int i;
|
|
|
|
dev_dbg(vou_file->vbq.dev, "%s()\n", __func__);
|
|
|
|
fmt->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
|
|
pix->field = V4L2_FIELD_NONE;
|
|
|
|
v4l_bound_align_image(&pix->width, 0, VOU_MAX_IMAGE_WIDTH, 1,
|
|
&pix->height, 0, VOU_MAX_IMAGE_HEIGHT, 1, 0);
|
|
|
|
for (i = 0; ARRAY_SIZE(vou_fmt); i++)
|
|
if (vou_fmt[i].pfmt == pix->pixelformat)
|
|
return 0;
|
|
|
|
pix->pixelformat = vou_fmt[0].pfmt;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int sh_vou_reqbufs(struct file *file, void *priv,
|
|
struct v4l2_requestbuffers *req)
|
|
{
|
|
struct sh_vou_file *vou_file = priv;
|
|
|
|
dev_dbg(vou_file->vbq.dev, "%s()\n", __func__);
|
|
|
|
if (req->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
|
|
return -EINVAL;
|
|
|
|
return videobuf_reqbufs(&vou_file->vbq, req);
|
|
}
|
|
|
|
static int sh_vou_querybuf(struct file *file, void *priv,
|
|
struct v4l2_buffer *b)
|
|
{
|
|
struct sh_vou_file *vou_file = priv;
|
|
|
|
dev_dbg(vou_file->vbq.dev, "%s()\n", __func__);
|
|
|
|
return videobuf_querybuf(&vou_file->vbq, b);
|
|
}
|
|
|
|
static int sh_vou_qbuf(struct file *file, void *priv, struct v4l2_buffer *b)
|
|
{
|
|
struct sh_vou_file *vou_file = priv;
|
|
|
|
dev_dbg(vou_file->vbq.dev, "%s()\n", __func__);
|
|
|
|
return videobuf_qbuf(&vou_file->vbq, b);
|
|
}
|
|
|
|
static int sh_vou_dqbuf(struct file *file, void *priv, struct v4l2_buffer *b)
|
|
{
|
|
struct sh_vou_file *vou_file = priv;
|
|
|
|
dev_dbg(vou_file->vbq.dev, "%s()\n", __func__);
|
|
|
|
return videobuf_dqbuf(&vou_file->vbq, b, file->f_flags & O_NONBLOCK);
|
|
}
|
|
|
|
static int sh_vou_streamon(struct file *file, void *priv,
|
|
enum v4l2_buf_type buftype)
|
|
{
|
|
struct video_device *vdev = video_devdata(file);
|
|
struct sh_vou_device *vou_dev = video_get_drvdata(vdev);
|
|
struct sh_vou_file *vou_file = priv;
|
|
int ret;
|
|
|
|
dev_dbg(vou_file->vbq.dev, "%s()\n", __func__);
|
|
|
|
ret = v4l2_device_call_until_err(&vou_dev->v4l2_dev, 0,
|
|
video, s_stream, 1);
|
|
if (ret < 0 && ret != -ENOIOCTLCMD)
|
|
return ret;
|
|
|
|
/* This calls our .buf_queue() (== sh_vou_buf_queue) */
|
|
return videobuf_streamon(&vou_file->vbq);
|
|
}
|
|
|
|
static int sh_vou_streamoff(struct file *file, void *priv,
|
|
enum v4l2_buf_type buftype)
|
|
{
|
|
struct video_device *vdev = video_devdata(file);
|
|
struct sh_vou_device *vou_dev = video_get_drvdata(vdev);
|
|
struct sh_vou_file *vou_file = priv;
|
|
|
|
dev_dbg(vou_file->vbq.dev, "%s()\n", __func__);
|
|
|
|
/*
|
|
* This calls buf_release from host driver's videobuf_queue_ops for all
|
|
* remaining buffers. When the last buffer is freed, stop streaming
|
|
*/
|
|
videobuf_streamoff(&vou_file->vbq);
|
|
v4l2_device_call_until_err(&vou_dev->v4l2_dev, 0, video, s_stream, 0);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static u32 sh_vou_ntsc_mode(enum sh_vou_bus_fmt bus_fmt)
|
|
{
|
|
switch (bus_fmt) {
|
|
default:
|
|
pr_warning("%s(): Invalid bus-format code %d, using default 8-bit\n",
|
|
__func__, bus_fmt);
|
|
case SH_VOU_BUS_8BIT:
|
|
return 1;
|
|
case SH_VOU_BUS_16BIT:
|
|
return 0;
|
|
case SH_VOU_BUS_BT656:
|
|
return 3;
|
|
}
|
|
}
|
|
|
|
static int sh_vou_s_std(struct file *file, void *priv, v4l2_std_id *std_id)
|
|
{
|
|
struct video_device *vdev = video_devdata(file);
|
|
struct sh_vou_device *vou_dev = video_get_drvdata(vdev);
|
|
int ret;
|
|
|
|
dev_dbg(vou_dev->v4l2_dev.dev, "%s(): 0x%llx\n", __func__, *std_id);
|
|
|
|
if (*std_id & ~vdev->tvnorms)
|
|
return -EINVAL;
|
|
|
|
ret = v4l2_device_call_until_err(&vou_dev->v4l2_dev, 0, video,
|
|
s_std_output, *std_id);
|
|
/* Shall we continue, if the subdev doesn't support .s_std_output()? */
|
|
if (ret < 0 && ret != -ENOIOCTLCMD)
|
|
return ret;
|
|
|
|
if (*std_id & V4L2_STD_525_60)
|
|
sh_vou_reg_ab_set(vou_dev, VOUCR,
|
|
sh_vou_ntsc_mode(vou_dev->pdata->bus_fmt) << 29, 7 << 29);
|
|
else
|
|
sh_vou_reg_ab_set(vou_dev, VOUCR, 5 << 29, 7 << 29);
|
|
|
|
vou_dev->std = *std_id;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int sh_vou_g_std(struct file *file, void *priv, v4l2_std_id *std)
|
|
{
|
|
struct video_device *vdev = video_devdata(file);
|
|
struct sh_vou_device *vou_dev = video_get_drvdata(vdev);
|
|
|
|
dev_dbg(vou_dev->v4l2_dev.dev, "%s()\n", __func__);
|
|
|
|
*std = vou_dev->std;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int sh_vou_g_crop(struct file *file, void *fh, struct v4l2_crop *a)
|
|
{
|
|
struct video_device *vdev = video_devdata(file);
|
|
struct sh_vou_device *vou_dev = video_get_drvdata(vdev);
|
|
|
|
dev_dbg(vou_dev->v4l2_dev.dev, "%s()\n", __func__);
|
|
|
|
a->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
|
|
a->c = vou_dev->rect;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* Assume a dull encoder, do all the work ourselves. */
|
|
static int sh_vou_s_crop(struct file *file, void *fh, struct v4l2_crop *a)
|
|
{
|
|
struct video_device *vdev = video_devdata(file);
|
|
struct sh_vou_device *vou_dev = video_get_drvdata(vdev);
|
|
struct v4l2_rect *rect = &a->c;
|
|
struct v4l2_crop sd_crop = {.type = V4L2_BUF_TYPE_VIDEO_OUTPUT};
|
|
struct v4l2_pix_format *pix = &vou_dev->pix;
|
|
struct sh_vou_geometry geo;
|
|
struct v4l2_mbus_framefmt mbfmt = {
|
|
/* Revisit: is this the correct code? */
|
|
.code = V4L2_MBUS_FMT_YUYV8_2X8,
|
|
.field = V4L2_FIELD_INTERLACED,
|
|
.colorspace = V4L2_COLORSPACE_SMPTE170M,
|
|
};
|
|
unsigned int img_height_max;
|
|
int ret;
|
|
|
|
dev_dbg(vou_dev->v4l2_dev.dev, "%s(): %ux%u@%u:%u\n", __func__,
|
|
rect->width, rect->height, rect->left, rect->top);
|
|
|
|
if (a->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
|
|
return -EINVAL;
|
|
|
|
if (vou_dev->std & V4L2_STD_525_60)
|
|
img_height_max = 480;
|
|
else
|
|
img_height_max = 576;
|
|
|
|
v4l_bound_align_image(&rect->width, 0, VOU_MAX_IMAGE_WIDTH, 1,
|
|
&rect->height, 0, img_height_max, 1, 0);
|
|
|
|
if (rect->width + rect->left > VOU_MAX_IMAGE_WIDTH)
|
|
rect->left = VOU_MAX_IMAGE_WIDTH - rect->width;
|
|
|
|
if (rect->height + rect->top > img_height_max)
|
|
rect->top = img_height_max - rect->height;
|
|
|
|
geo.output = *rect;
|
|
geo.in_width = pix->width;
|
|
geo.in_height = pix->height;
|
|
|
|
/* Configure the encoder one-to-one, position at 0, ignore errors */
|
|
sd_crop.c.width = geo.output.width;
|
|
sd_crop.c.height = geo.output.height;
|
|
/*
|
|
* We first issue a S_CROP, so that the subsequent S_FMT delivers the
|
|
* final encoder configuration.
|
|
*/
|
|
v4l2_device_call_until_err(&vou_dev->v4l2_dev, 0, video,
|
|
s_crop, &sd_crop);
|
|
mbfmt.width = geo.output.width;
|
|
mbfmt.height = geo.output.height;
|
|
ret = v4l2_device_call_until_err(&vou_dev->v4l2_dev, 0, video,
|
|
s_mbus_fmt, &mbfmt);
|
|
/* Must be implemented, so, don't check for -ENOIOCTLCMD */
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
/* Sanity checks */
|
|
if ((unsigned)mbfmt.width > VOU_MAX_IMAGE_WIDTH ||
|
|
(unsigned)mbfmt.height > img_height_max ||
|
|
mbfmt.code != V4L2_MBUS_FMT_YUYV8_2X8)
|
|
return -EIO;
|
|
|
|
geo.output.width = mbfmt.width;
|
|
geo.output.height = mbfmt.height;
|
|
|
|
/*
|
|
* No down-scaling. According to the API, current call has precedence:
|
|
* http://v4l2spec.bytesex.org/spec/x1904.htm#AEN1954 paragraph two.
|
|
*/
|
|
vou_adjust_input(&geo, vou_dev->std);
|
|
|
|
/* We tried to preserve output rectangle, but it could have changed */
|
|
vou_dev->rect = geo.output;
|
|
pix->width = geo.in_width;
|
|
pix->height = geo.in_height;
|
|
|
|
sh_vou_configure_geometry(vou_dev, vou_dev->pix_idx,
|
|
geo.scale_idx_h, geo.scale_idx_v);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Total field: NTSC 858 x 2 * 262/263, PAL 864 x 2 * 312/313, default rectangle
|
|
* is the initial register values, height takes the interlaced format into
|
|
* account. The actual image can only go up to 720 x 2 * 240, So, VOUVPR can
|
|
* actually only meaningfully contain values <= 720 and <= 240 respectively, and
|
|
* not <= 864 and <= 312.
|
|
*/
|
|
static int sh_vou_cropcap(struct file *file, void *priv,
|
|
struct v4l2_cropcap *a)
|
|
{
|
|
struct sh_vou_file *vou_file = priv;
|
|
|
|
dev_dbg(vou_file->vbq.dev, "%s()\n", __func__);
|
|
|
|
a->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
|
|
a->bounds.left = 0;
|
|
a->bounds.top = 0;
|
|
a->bounds.width = VOU_MAX_IMAGE_WIDTH;
|
|
a->bounds.height = VOU_MAX_IMAGE_HEIGHT;
|
|
/* Default = max, set VOUDPR = 0, which is not hardware default */
|
|
a->defrect.left = 0;
|
|
a->defrect.top = 0;
|
|
a->defrect.width = VOU_MAX_IMAGE_WIDTH;
|
|
a->defrect.height = VOU_MAX_IMAGE_HEIGHT;
|
|
a->pixelaspect.numerator = 1;
|
|
a->pixelaspect.denominator = 1;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static irqreturn_t sh_vou_isr(int irq, void *dev_id)
|
|
{
|
|
struct sh_vou_device *vou_dev = dev_id;
|
|
static unsigned long j;
|
|
struct videobuf_buffer *vb;
|
|
static int cnt;
|
|
static int side;
|
|
u32 irq_status = sh_vou_reg_a_read(vou_dev, VOUIR), masked;
|
|
u32 vou_status = sh_vou_reg_a_read(vou_dev, VOUSTR);
|
|
|
|
if (!(irq_status & 0x300)) {
|
|
if (printk_timed_ratelimit(&j, 500))
|
|
dev_warn(vou_dev->v4l2_dev.dev, "IRQ status 0x%x!\n",
|
|
irq_status);
|
|
return IRQ_NONE;
|
|
}
|
|
|
|
spin_lock(&vou_dev->lock);
|
|
if (!vou_dev->active || list_empty(&vou_dev->queue)) {
|
|
if (printk_timed_ratelimit(&j, 500))
|
|
dev_warn(vou_dev->v4l2_dev.dev,
|
|
"IRQ without active buffer: %x!\n", irq_status);
|
|
/* Just ack: buf_release will disable further interrupts */
|
|
sh_vou_reg_a_set(vou_dev, VOUIR, 0, 0x300);
|
|
spin_unlock(&vou_dev->lock);
|
|
return IRQ_HANDLED;
|
|
}
|
|
|
|
masked = ~(0x300 & irq_status) & irq_status & 0x30304;
|
|
dev_dbg(vou_dev->v4l2_dev.dev,
|
|
"IRQ status 0x%x -> 0x%x, VOU status 0x%x, cnt %d\n",
|
|
irq_status, masked, vou_status, cnt);
|
|
|
|
cnt++;
|
|
side = vou_status & 0x10000;
|
|
|
|
/* Clear only set interrupts */
|
|
sh_vou_reg_a_write(vou_dev, VOUIR, masked);
|
|
|
|
vb = vou_dev->active;
|
|
list_del(&vb->queue);
|
|
|
|
vb->state = VIDEOBUF_DONE;
|
|
do_gettimeofday(&vb->ts);
|
|
vb->field_count++;
|
|
wake_up(&vb->done);
|
|
|
|
if (list_empty(&vou_dev->queue)) {
|
|
/* Stop VOU */
|
|
dev_dbg(vou_dev->v4l2_dev.dev, "%s: queue empty after %d\n",
|
|
__func__, cnt);
|
|
sh_vou_reg_a_set(vou_dev, VOUER, 0, 1);
|
|
vou_dev->active = NULL;
|
|
vou_dev->status = SH_VOU_INITIALISING;
|
|
/* Disable End-of-Frame (VSYNC) interrupts */
|
|
sh_vou_reg_a_set(vou_dev, VOUIR, 0, 0x30000);
|
|
spin_unlock(&vou_dev->lock);
|
|
return IRQ_HANDLED;
|
|
}
|
|
|
|
vou_dev->active = list_entry(vou_dev->queue.next,
|
|
struct videobuf_buffer, queue);
|
|
|
|
if (vou_dev->active->queue.next != &vou_dev->queue) {
|
|
struct videobuf_buffer *new = list_entry(vou_dev->active->queue.next,
|
|
struct videobuf_buffer, queue);
|
|
sh_vou_schedule_next(vou_dev, new);
|
|
}
|
|
|
|
spin_unlock(&vou_dev->lock);
|
|
|
|
return IRQ_HANDLED;
|
|
}
|
|
|
|
static int sh_vou_hw_init(struct sh_vou_device *vou_dev)
|
|
{
|
|
struct sh_vou_pdata *pdata = vou_dev->pdata;
|
|
u32 voucr = sh_vou_ntsc_mode(pdata->bus_fmt) << 29;
|
|
int i = 100;
|
|
|
|
/* Disable all IRQs */
|
|
sh_vou_reg_a_write(vou_dev, VOUIR, 0);
|
|
|
|
/* Reset VOU interfaces - registers unaffected */
|
|
sh_vou_reg_a_write(vou_dev, VOUSRR, 0x101);
|
|
while (--i && (sh_vou_reg_a_read(vou_dev, VOUSRR) & 0x101))
|
|
udelay(1);
|
|
|
|
if (!i)
|
|
return -ETIMEDOUT;
|
|
|
|
dev_dbg(vou_dev->v4l2_dev.dev, "Reset took %dus\n", 100 - i);
|
|
|
|
if (pdata->flags & SH_VOU_PCLK_FALLING)
|
|
voucr |= 1 << 28;
|
|
if (pdata->flags & SH_VOU_HSYNC_LOW)
|
|
voucr |= 1 << 27;
|
|
if (pdata->flags & SH_VOU_VSYNC_LOW)
|
|
voucr |= 1 << 26;
|
|
sh_vou_reg_ab_set(vou_dev, VOUCR, voucr, 0xfc000000);
|
|
|
|
/* Manual register side switching at first */
|
|
sh_vou_reg_a_write(vou_dev, VOURCR, 4);
|
|
/* Default - fixed HSYNC length, can be made configurable is required */
|
|
sh_vou_reg_ab_write(vou_dev, VOUMSR, 0x800000);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* File operations */
|
|
static int sh_vou_open(struct file *file)
|
|
{
|
|
struct video_device *vdev = video_devdata(file);
|
|
struct sh_vou_device *vou_dev = video_get_drvdata(vdev);
|
|
struct sh_vou_file *vou_file = kzalloc(sizeof(struct sh_vou_file),
|
|
GFP_KERNEL);
|
|
|
|
if (!vou_file)
|
|
return -ENOMEM;
|
|
|
|
dev_dbg(vou_dev->v4l2_dev.dev, "%s()\n", __func__);
|
|
|
|
file->private_data = vou_file;
|
|
|
|
if (atomic_inc_return(&vou_dev->use_count) == 1) {
|
|
int ret;
|
|
/* First open */
|
|
vou_dev->status = SH_VOU_INITIALISING;
|
|
pm_runtime_get_sync(vdev->v4l2_dev->dev);
|
|
ret = sh_vou_hw_init(vou_dev);
|
|
if (ret < 0) {
|
|
atomic_dec(&vou_dev->use_count);
|
|
pm_runtime_put(vdev->v4l2_dev->dev);
|
|
vou_dev->status = SH_VOU_IDLE;
|
|
return ret;
|
|
}
|
|
}
|
|
|
|
videobuf_queue_dma_contig_init(&vou_file->vbq, &sh_vou_video_qops,
|
|
vou_dev->v4l2_dev.dev, &vou_dev->lock,
|
|
V4L2_BUF_TYPE_VIDEO_OUTPUT,
|
|
V4L2_FIELD_NONE,
|
|
sizeof(struct videobuf_buffer), vdev,
|
|
&vou_dev->fop_lock);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int sh_vou_release(struct file *file)
|
|
{
|
|
struct video_device *vdev = video_devdata(file);
|
|
struct sh_vou_device *vou_dev = video_get_drvdata(vdev);
|
|
struct sh_vou_file *vou_file = file->private_data;
|
|
|
|
dev_dbg(vou_file->vbq.dev, "%s()\n", __func__);
|
|
|
|
if (!atomic_dec_return(&vou_dev->use_count)) {
|
|
/* Last close */
|
|
vou_dev->status = SH_VOU_IDLE;
|
|
sh_vou_reg_a_set(vou_dev, VOUER, 0, 0x101);
|
|
pm_runtime_put(vdev->v4l2_dev->dev);
|
|
}
|
|
|
|
file->private_data = NULL;
|
|
kfree(vou_file);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int sh_vou_mmap(struct file *file, struct vm_area_struct *vma)
|
|
{
|
|
struct sh_vou_file *vou_file = file->private_data;
|
|
|
|
dev_dbg(vou_file->vbq.dev, "%s()\n", __func__);
|
|
|
|
return videobuf_mmap_mapper(&vou_file->vbq, vma);
|
|
}
|
|
|
|
static unsigned int sh_vou_poll(struct file *file, poll_table *wait)
|
|
{
|
|
struct sh_vou_file *vou_file = file->private_data;
|
|
|
|
dev_dbg(vou_file->vbq.dev, "%s()\n", __func__);
|
|
|
|
return videobuf_poll_stream(file, &vou_file->vbq, wait);
|
|
}
|
|
|
|
static int sh_vou_g_chip_ident(struct file *file, void *fh,
|
|
struct v4l2_dbg_chip_ident *id)
|
|
{
|
|
struct video_device *vdev = video_devdata(file);
|
|
struct sh_vou_device *vou_dev = video_get_drvdata(vdev);
|
|
|
|
return v4l2_device_call_until_err(&vou_dev->v4l2_dev, 0, core, g_chip_ident, id);
|
|
}
|
|
|
|
#ifdef CONFIG_VIDEO_ADV_DEBUG
|
|
static int sh_vou_g_register(struct file *file, void *fh,
|
|
struct v4l2_dbg_register *reg)
|
|
{
|
|
struct video_device *vdev = video_devdata(file);
|
|
struct sh_vou_device *vou_dev = video_get_drvdata(vdev);
|
|
|
|
return v4l2_device_call_until_err(&vou_dev->v4l2_dev, 0, core, g_register, reg);
|
|
}
|
|
|
|
static int sh_vou_s_register(struct file *file, void *fh,
|
|
struct v4l2_dbg_register *reg)
|
|
{
|
|
struct video_device *vdev = video_devdata(file);
|
|
struct sh_vou_device *vou_dev = video_get_drvdata(vdev);
|
|
|
|
return v4l2_device_call_until_err(&vou_dev->v4l2_dev, 0, core, s_register, reg);
|
|
}
|
|
#endif
|
|
|
|
/* sh_vou display ioctl operations */
|
|
static const struct v4l2_ioctl_ops sh_vou_ioctl_ops = {
|
|
.vidioc_querycap = sh_vou_querycap,
|
|
.vidioc_enum_fmt_vid_out = sh_vou_enum_fmt_vid_out,
|
|
.vidioc_g_fmt_vid_out = sh_vou_g_fmt_vid_out,
|
|
.vidioc_s_fmt_vid_out = sh_vou_s_fmt_vid_out,
|
|
.vidioc_try_fmt_vid_out = sh_vou_try_fmt_vid_out,
|
|
.vidioc_reqbufs = sh_vou_reqbufs,
|
|
.vidioc_querybuf = sh_vou_querybuf,
|
|
.vidioc_qbuf = sh_vou_qbuf,
|
|
.vidioc_dqbuf = sh_vou_dqbuf,
|
|
.vidioc_streamon = sh_vou_streamon,
|
|
.vidioc_streamoff = sh_vou_streamoff,
|
|
.vidioc_s_std = sh_vou_s_std,
|
|
.vidioc_g_std = sh_vou_g_std,
|
|
.vidioc_cropcap = sh_vou_cropcap,
|
|
.vidioc_g_crop = sh_vou_g_crop,
|
|
.vidioc_s_crop = sh_vou_s_crop,
|
|
.vidioc_g_chip_ident = sh_vou_g_chip_ident,
|
|
#ifdef CONFIG_VIDEO_ADV_DEBUG
|
|
.vidioc_g_register = sh_vou_g_register,
|
|
.vidioc_s_register = sh_vou_s_register,
|
|
#endif
|
|
};
|
|
|
|
static const struct v4l2_file_operations sh_vou_fops = {
|
|
.owner = THIS_MODULE,
|
|
.open = sh_vou_open,
|
|
.release = sh_vou_release,
|
|
.unlocked_ioctl = video_ioctl2,
|
|
.mmap = sh_vou_mmap,
|
|
.poll = sh_vou_poll,
|
|
};
|
|
|
|
static const struct video_device sh_vou_video_template = {
|
|
.name = "sh_vou",
|
|
.fops = &sh_vou_fops,
|
|
.ioctl_ops = &sh_vou_ioctl_ops,
|
|
.tvnorms = V4L2_STD_525_60, /* PAL only supported in 8-bit non-bt656 mode */
|
|
.current_norm = V4L2_STD_NTSC_M,
|
|
};
|
|
|
|
static int __devinit sh_vou_probe(struct platform_device *pdev)
|
|
{
|
|
struct sh_vou_pdata *vou_pdata = pdev->dev.platform_data;
|
|
struct v4l2_rect *rect;
|
|
struct v4l2_pix_format *pix;
|
|
struct i2c_adapter *i2c_adap;
|
|
struct video_device *vdev;
|
|
struct sh_vou_device *vou_dev;
|
|
struct resource *reg_res, *region;
|
|
struct v4l2_subdev *subdev;
|
|
int irq, ret;
|
|
|
|
reg_res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
|
|
irq = platform_get_irq(pdev, 0);
|
|
|
|
if (!vou_pdata || !reg_res || irq <= 0) {
|
|
dev_err(&pdev->dev, "Insufficient VOU platform information.\n");
|
|
return -ENODEV;
|
|
}
|
|
|
|
vou_dev = kzalloc(sizeof(*vou_dev), GFP_KERNEL);
|
|
if (!vou_dev)
|
|
return -ENOMEM;
|
|
|
|
INIT_LIST_HEAD(&vou_dev->queue);
|
|
spin_lock_init(&vou_dev->lock);
|
|
mutex_init(&vou_dev->fop_lock);
|
|
atomic_set(&vou_dev->use_count, 0);
|
|
vou_dev->pdata = vou_pdata;
|
|
vou_dev->status = SH_VOU_IDLE;
|
|
|
|
rect = &vou_dev->rect;
|
|
pix = &vou_dev->pix;
|
|
|
|
/* Fill in defaults */
|
|
vou_dev->std = sh_vou_video_template.current_norm;
|
|
rect->left = 0;
|
|
rect->top = 0;
|
|
rect->width = VOU_MAX_IMAGE_WIDTH;
|
|
rect->height = 480;
|
|
pix->width = VOU_MAX_IMAGE_WIDTH;
|
|
pix->height = 480;
|
|
pix->pixelformat = V4L2_PIX_FMT_YVYU;
|
|
pix->field = V4L2_FIELD_NONE;
|
|
pix->bytesperline = VOU_MAX_IMAGE_WIDTH * 2;
|
|
pix->sizeimage = VOU_MAX_IMAGE_WIDTH * 2 * 480;
|
|
pix->colorspace = V4L2_COLORSPACE_SMPTE170M;
|
|
|
|
region = request_mem_region(reg_res->start, resource_size(reg_res),
|
|
pdev->name);
|
|
if (!region) {
|
|
dev_err(&pdev->dev, "VOU region already claimed\n");
|
|
ret = -EBUSY;
|
|
goto ereqmemreg;
|
|
}
|
|
|
|
vou_dev->base = ioremap(reg_res->start, resource_size(reg_res));
|
|
if (!vou_dev->base) {
|
|
ret = -ENOMEM;
|
|
goto emap;
|
|
}
|
|
|
|
ret = request_irq(irq, sh_vou_isr, 0, "vou", vou_dev);
|
|
if (ret < 0)
|
|
goto ereqirq;
|
|
|
|
ret = v4l2_device_register(&pdev->dev, &vou_dev->v4l2_dev);
|
|
if (ret < 0) {
|
|
dev_err(&pdev->dev, "Error registering v4l2 device\n");
|
|
goto ev4l2devreg;
|
|
}
|
|
|
|
/* Allocate memory for video device */
|
|
vdev = video_device_alloc();
|
|
if (vdev == NULL) {
|
|
ret = -ENOMEM;
|
|
goto evdevalloc;
|
|
}
|
|
|
|
*vdev = sh_vou_video_template;
|
|
if (vou_pdata->bus_fmt == SH_VOU_BUS_8BIT)
|
|
vdev->tvnorms |= V4L2_STD_PAL;
|
|
vdev->v4l2_dev = &vou_dev->v4l2_dev;
|
|
vdev->release = video_device_release;
|
|
vdev->lock = &vou_dev->fop_lock;
|
|
|
|
vou_dev->vdev = vdev;
|
|
video_set_drvdata(vdev, vou_dev);
|
|
|
|
pm_runtime_enable(&pdev->dev);
|
|
pm_runtime_resume(&pdev->dev);
|
|
|
|
i2c_adap = i2c_get_adapter(vou_pdata->i2c_adap);
|
|
if (!i2c_adap) {
|
|
ret = -ENODEV;
|
|
goto ei2cgadap;
|
|
}
|
|
|
|
ret = sh_vou_hw_init(vou_dev);
|
|
if (ret < 0)
|
|
goto ereset;
|
|
|
|
subdev = v4l2_i2c_new_subdev_board(&vou_dev->v4l2_dev, i2c_adap,
|
|
vou_pdata->board_info, NULL);
|
|
if (!subdev) {
|
|
ret = -ENOMEM;
|
|
goto ei2cnd;
|
|
}
|
|
|
|
ret = video_register_device(vdev, VFL_TYPE_GRABBER, -1);
|
|
if (ret < 0)
|
|
goto evregdev;
|
|
|
|
return 0;
|
|
|
|
evregdev:
|
|
ei2cnd:
|
|
ereset:
|
|
i2c_put_adapter(i2c_adap);
|
|
ei2cgadap:
|
|
video_device_release(vdev);
|
|
pm_runtime_disable(&pdev->dev);
|
|
evdevalloc:
|
|
v4l2_device_unregister(&vou_dev->v4l2_dev);
|
|
ev4l2devreg:
|
|
free_irq(irq, vou_dev);
|
|
ereqirq:
|
|
iounmap(vou_dev->base);
|
|
emap:
|
|
release_mem_region(reg_res->start, resource_size(reg_res));
|
|
ereqmemreg:
|
|
kfree(vou_dev);
|
|
return ret;
|
|
}
|
|
|
|
static int __devexit sh_vou_remove(struct platform_device *pdev)
|
|
{
|
|
int irq = platform_get_irq(pdev, 0);
|
|
struct v4l2_device *v4l2_dev = platform_get_drvdata(pdev);
|
|
struct sh_vou_device *vou_dev = container_of(v4l2_dev,
|
|
struct sh_vou_device, v4l2_dev);
|
|
struct v4l2_subdev *sd = list_entry(v4l2_dev->subdevs.next,
|
|
struct v4l2_subdev, list);
|
|
struct i2c_client *client = v4l2_get_subdevdata(sd);
|
|
struct resource *reg_res;
|
|
|
|
if (irq > 0)
|
|
free_irq(irq, vou_dev);
|
|
pm_runtime_disable(&pdev->dev);
|
|
video_unregister_device(vou_dev->vdev);
|
|
i2c_put_adapter(client->adapter);
|
|
v4l2_device_unregister(&vou_dev->v4l2_dev);
|
|
iounmap(vou_dev->base);
|
|
reg_res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
|
|
if (reg_res)
|
|
release_mem_region(reg_res->start, resource_size(reg_res));
|
|
kfree(vou_dev);
|
|
return 0;
|
|
}
|
|
|
|
static struct platform_driver __refdata sh_vou = {
|
|
.remove = __devexit_p(sh_vou_remove),
|
|
.driver = {
|
|
.name = "sh-vou",
|
|
.owner = THIS_MODULE,
|
|
},
|
|
};
|
|
|
|
static int __init sh_vou_init(void)
|
|
{
|
|
return platform_driver_probe(&sh_vou, sh_vou_probe);
|
|
}
|
|
|
|
static void __exit sh_vou_exit(void)
|
|
{
|
|
platform_driver_unregister(&sh_vou);
|
|
}
|
|
|
|
module_init(sh_vou_init);
|
|
module_exit(sh_vou_exit);
|
|
|
|
MODULE_DESCRIPTION("SuperH VOU driver");
|
|
MODULE_AUTHOR("Guennadi Liakhovetski <g.liakhovetski@gmx.de>");
|
|
MODULE_LICENSE("GPL v2");
|
|
MODULE_ALIAS("platform:sh-vou");
|