![Joe Perches](/assets/img/avatar_default.png)
To enable eventual removal of pr_warning This makes pr_warn use consistent for drivers/media Prior to this patch, there was 1 use of pr_warning and 310 uses of pr_warn in drivers/media Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
1382 lines
37 KiB
C
1382 lines
37 KiB
C
/*
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* SuperH Video Output Unit (VOU) driver
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*
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* Copyright (C) 2010, Guennadi Liakhovetski <g.liakhovetski@gmx.de>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#include <linux/dma-mapping.h>
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#include <linux/delay.h>
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#include <linux/errno.h>
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#include <linux/fs.h>
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#include <linux/i2c.h>
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#include <linux/init.h>
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#include <linux/interrupt.h>
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#include <linux/kernel.h>
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#include <linux/platform_device.h>
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#include <linux/pm_runtime.h>
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#include <linux/slab.h>
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#include <linux/videodev2.h>
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#include <linux/module.h>
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#include <media/drv-intf/sh_vou.h>
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#include <media/v4l2-common.h>
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#include <media/v4l2-device.h>
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#include <media/v4l2-ioctl.h>
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#include <media/v4l2-mediabus.h>
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#include <media/videobuf2-v4l2.h>
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#include <media/videobuf2-dma-contig.h>
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/* Mirror addresses are not available for all registers */
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#define VOUER 0
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#define VOUCR 4
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#define VOUSTR 8
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#define VOUVCR 0xc
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#define VOUISR 0x10
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#define VOUBCR 0x14
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#define VOUDPR 0x18
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#define VOUDSR 0x1c
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#define VOUVPR 0x20
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#define VOUIR 0x24
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#define VOUSRR 0x28
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#define VOUMSR 0x2c
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#define VOUHIR 0x30
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#define VOUDFR 0x34
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#define VOUAD1R 0x38
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#define VOUAD2R 0x3c
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#define VOUAIR 0x40
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#define VOUSWR 0x44
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#define VOURCR 0x48
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#define VOURPR 0x50
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enum sh_vou_status {
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SH_VOU_IDLE,
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SH_VOU_INITIALISING,
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SH_VOU_RUNNING,
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};
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#define VOU_MIN_IMAGE_WIDTH 16
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#define VOU_MAX_IMAGE_WIDTH 720
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#define VOU_MIN_IMAGE_HEIGHT 16
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struct sh_vou_buffer {
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struct vb2_v4l2_buffer vb;
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struct list_head list;
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};
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static inline struct
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sh_vou_buffer *to_sh_vou_buffer(struct vb2_v4l2_buffer *vb2)
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{
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return container_of(vb2, struct sh_vou_buffer, vb);
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}
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struct sh_vou_device {
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struct v4l2_device v4l2_dev;
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struct video_device vdev;
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struct sh_vou_pdata *pdata;
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spinlock_t lock;
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void __iomem *base;
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/* State information */
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struct v4l2_pix_format pix;
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struct v4l2_rect rect;
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struct list_head buf_list;
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v4l2_std_id std;
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int pix_idx;
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struct vb2_queue queue;
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struct sh_vou_buffer *active;
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enum sh_vou_status status;
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unsigned sequence;
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struct mutex fop_lock;
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};
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/* Register access routines for sides A, B and mirror addresses */
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static void sh_vou_reg_a_write(struct sh_vou_device *vou_dev, unsigned int reg,
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u32 value)
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{
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__raw_writel(value, vou_dev->base + reg);
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}
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static void sh_vou_reg_ab_write(struct sh_vou_device *vou_dev, unsigned int reg,
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u32 value)
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{
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__raw_writel(value, vou_dev->base + reg);
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__raw_writel(value, vou_dev->base + reg + 0x1000);
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}
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static void sh_vou_reg_m_write(struct sh_vou_device *vou_dev, unsigned int reg,
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u32 value)
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{
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__raw_writel(value, vou_dev->base + reg + 0x2000);
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}
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static u32 sh_vou_reg_a_read(struct sh_vou_device *vou_dev, unsigned int reg)
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{
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return __raw_readl(vou_dev->base + reg);
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}
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static void sh_vou_reg_a_set(struct sh_vou_device *vou_dev, unsigned int reg,
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u32 value, u32 mask)
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{
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u32 old = __raw_readl(vou_dev->base + reg);
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value = (value & mask) | (old & ~mask);
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__raw_writel(value, vou_dev->base + reg);
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}
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static void sh_vou_reg_b_set(struct sh_vou_device *vou_dev, unsigned int reg,
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u32 value, u32 mask)
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{
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sh_vou_reg_a_set(vou_dev, reg + 0x1000, value, mask);
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}
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static void sh_vou_reg_ab_set(struct sh_vou_device *vou_dev, unsigned int reg,
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u32 value, u32 mask)
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{
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sh_vou_reg_a_set(vou_dev, reg, value, mask);
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sh_vou_reg_b_set(vou_dev, reg, value, mask);
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}
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struct sh_vou_fmt {
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u32 pfmt;
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char *desc;
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unsigned char bpp;
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unsigned char bpl;
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unsigned char rgb;
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unsigned char yf;
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unsigned char pkf;
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};
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/* Further pixel formats can be added */
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static struct sh_vou_fmt vou_fmt[] = {
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{
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.pfmt = V4L2_PIX_FMT_NV12,
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.bpp = 12,
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.bpl = 1,
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.desc = "YVU420 planar",
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.yf = 0,
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.rgb = 0,
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},
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{
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.pfmt = V4L2_PIX_FMT_NV16,
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.bpp = 16,
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.bpl = 1,
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.desc = "YVYU planar",
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.yf = 1,
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.rgb = 0,
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},
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{
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.pfmt = V4L2_PIX_FMT_RGB24,
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.bpp = 24,
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.bpl = 3,
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.desc = "RGB24",
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.pkf = 2,
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.rgb = 1,
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},
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{
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.pfmt = V4L2_PIX_FMT_RGB565,
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.bpp = 16,
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.bpl = 2,
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.desc = "RGB565",
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.pkf = 3,
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.rgb = 1,
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},
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{
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.pfmt = V4L2_PIX_FMT_RGB565X,
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.bpp = 16,
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.bpl = 2,
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.desc = "RGB565 byteswapped",
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.pkf = 3,
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.rgb = 1,
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},
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};
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static void sh_vou_schedule_next(struct sh_vou_device *vou_dev,
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struct vb2_v4l2_buffer *vbuf)
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{
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dma_addr_t addr1, addr2;
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addr1 = vb2_dma_contig_plane_dma_addr(&vbuf->vb2_buf, 0);
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switch (vou_dev->pix.pixelformat) {
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case V4L2_PIX_FMT_NV12:
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case V4L2_PIX_FMT_NV16:
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addr2 = addr1 + vou_dev->pix.width * vou_dev->pix.height;
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break;
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default:
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addr2 = 0;
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}
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sh_vou_reg_m_write(vou_dev, VOUAD1R, addr1);
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sh_vou_reg_m_write(vou_dev, VOUAD2R, addr2);
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}
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static void sh_vou_stream_config(struct sh_vou_device *vou_dev)
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{
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unsigned int row_coeff;
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#ifdef __LITTLE_ENDIAN
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u32 dataswap = 7;
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#else
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u32 dataswap = 0;
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#endif
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switch (vou_dev->pix.pixelformat) {
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default:
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case V4L2_PIX_FMT_NV12:
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case V4L2_PIX_FMT_NV16:
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row_coeff = 1;
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break;
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case V4L2_PIX_FMT_RGB565:
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dataswap ^= 1;
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case V4L2_PIX_FMT_RGB565X:
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row_coeff = 2;
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break;
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case V4L2_PIX_FMT_RGB24:
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row_coeff = 3;
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break;
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}
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sh_vou_reg_a_write(vou_dev, VOUSWR, dataswap);
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sh_vou_reg_ab_write(vou_dev, VOUAIR, vou_dev->pix.width * row_coeff);
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}
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/* Locking: caller holds fop_lock mutex */
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static int sh_vou_queue_setup(struct vb2_queue *vq,
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unsigned int *nbuffers, unsigned int *nplanes,
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unsigned int sizes[], struct device *alloc_devs[])
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{
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struct sh_vou_device *vou_dev = vb2_get_drv_priv(vq);
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struct v4l2_pix_format *pix = &vou_dev->pix;
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int bytes_per_line = vou_fmt[vou_dev->pix_idx].bpp * pix->width / 8;
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dev_dbg(vou_dev->v4l2_dev.dev, "%s()\n", __func__);
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if (*nplanes)
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return sizes[0] < pix->height * bytes_per_line ? -EINVAL : 0;
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*nplanes = 1;
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sizes[0] = pix->height * bytes_per_line;
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return 0;
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}
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static int sh_vou_buf_prepare(struct vb2_buffer *vb)
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{
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struct sh_vou_device *vou_dev = vb2_get_drv_priv(vb->vb2_queue);
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struct v4l2_pix_format *pix = &vou_dev->pix;
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unsigned bytes_per_line = vou_fmt[vou_dev->pix_idx].bpp * pix->width / 8;
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unsigned size = pix->height * bytes_per_line;
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dev_dbg(vou_dev->v4l2_dev.dev, "%s()\n", __func__);
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if (vb2_plane_size(vb, 0) < size) {
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/* User buffer too small */
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dev_warn(vou_dev->v4l2_dev.dev, "buffer too small (%lu < %u)\n",
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vb2_plane_size(vb, 0), size);
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return -EINVAL;
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}
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vb2_set_plane_payload(vb, 0, size);
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return 0;
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}
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/* Locking: caller holds fop_lock mutex and vq->irqlock spinlock */
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static void sh_vou_buf_queue(struct vb2_buffer *vb)
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{
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struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
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struct sh_vou_device *vou_dev = vb2_get_drv_priv(vb->vb2_queue);
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struct sh_vou_buffer *shbuf = to_sh_vou_buffer(vbuf);
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unsigned long flags;
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spin_lock_irqsave(&vou_dev->lock, flags);
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list_add_tail(&shbuf->list, &vou_dev->buf_list);
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spin_unlock_irqrestore(&vou_dev->lock, flags);
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}
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static int sh_vou_start_streaming(struct vb2_queue *vq, unsigned int count)
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{
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struct sh_vou_device *vou_dev = vb2_get_drv_priv(vq);
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struct sh_vou_buffer *buf, *node;
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int ret;
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vou_dev->sequence = 0;
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ret = v4l2_device_call_until_err(&vou_dev->v4l2_dev, 0,
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video, s_stream, 1);
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if (ret < 0 && ret != -ENOIOCTLCMD) {
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list_for_each_entry_safe(buf, node, &vou_dev->buf_list, list) {
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vb2_buffer_done(&buf->vb.vb2_buf,
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VB2_BUF_STATE_QUEUED);
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list_del(&buf->list);
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}
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vou_dev->active = NULL;
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return ret;
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}
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buf = list_entry(vou_dev->buf_list.next, struct sh_vou_buffer, list);
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vou_dev->active = buf;
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/* Start from side A: we use mirror addresses, so, set B */
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sh_vou_reg_a_write(vou_dev, VOURPR, 1);
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dev_dbg(vou_dev->v4l2_dev.dev, "%s: first buffer status 0x%x\n",
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__func__, sh_vou_reg_a_read(vou_dev, VOUSTR));
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sh_vou_schedule_next(vou_dev, &buf->vb);
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buf = list_entry(buf->list.next, struct sh_vou_buffer, list);
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/* Second buffer - initialise register side B */
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sh_vou_reg_a_write(vou_dev, VOURPR, 0);
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sh_vou_schedule_next(vou_dev, &buf->vb);
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/* Register side switching with frame VSYNC */
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sh_vou_reg_a_write(vou_dev, VOURCR, 5);
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sh_vou_stream_config(vou_dev);
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/* Enable End-of-Frame (VSYNC) interrupts */
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sh_vou_reg_a_write(vou_dev, VOUIR, 0x10004);
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/* Two buffers on the queue - activate the hardware */
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vou_dev->status = SH_VOU_RUNNING;
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sh_vou_reg_a_write(vou_dev, VOUER, 0x107);
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return 0;
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}
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static void sh_vou_stop_streaming(struct vb2_queue *vq)
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{
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struct sh_vou_device *vou_dev = vb2_get_drv_priv(vq);
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struct sh_vou_buffer *buf, *node;
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unsigned long flags;
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v4l2_device_call_until_err(&vou_dev->v4l2_dev, 0,
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video, s_stream, 0);
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/* disable output */
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sh_vou_reg_a_set(vou_dev, VOUER, 0, 1);
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/* ...but the current frame will complete */
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sh_vou_reg_a_set(vou_dev, VOUIR, 0, 0x30000);
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msleep(50);
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spin_lock_irqsave(&vou_dev->lock, flags);
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list_for_each_entry_safe(buf, node, &vou_dev->buf_list, list) {
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vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_ERROR);
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list_del(&buf->list);
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}
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vou_dev->active = NULL;
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spin_unlock_irqrestore(&vou_dev->lock, flags);
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}
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static const struct vb2_ops sh_vou_qops = {
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.queue_setup = sh_vou_queue_setup,
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.buf_prepare = sh_vou_buf_prepare,
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.buf_queue = sh_vou_buf_queue,
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.start_streaming = sh_vou_start_streaming,
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.stop_streaming = sh_vou_stop_streaming,
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.wait_prepare = vb2_ops_wait_prepare,
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.wait_finish = vb2_ops_wait_finish,
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};
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/* Video IOCTLs */
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static int sh_vou_querycap(struct file *file, void *priv,
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struct v4l2_capability *cap)
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{
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struct sh_vou_device *vou_dev = video_drvdata(file);
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dev_dbg(vou_dev->v4l2_dev.dev, "%s()\n", __func__);
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strlcpy(cap->card, "SuperH VOU", sizeof(cap->card));
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strlcpy(cap->driver, "sh-vou", sizeof(cap->driver));
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strlcpy(cap->bus_info, "platform:sh-vou", sizeof(cap->bus_info));
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cap->device_caps = V4L2_CAP_VIDEO_OUTPUT | V4L2_CAP_READWRITE |
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V4L2_CAP_STREAMING;
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cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS;
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return 0;
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}
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/* Enumerate formats, that the device can accept from the user */
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static int sh_vou_enum_fmt_vid_out(struct file *file, void *priv,
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struct v4l2_fmtdesc *fmt)
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{
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struct sh_vou_device *vou_dev = video_drvdata(file);
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if (fmt->index >= ARRAY_SIZE(vou_fmt))
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return -EINVAL;
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dev_dbg(vou_dev->v4l2_dev.dev, "%s()\n", __func__);
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fmt->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
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strlcpy(fmt->description, vou_fmt[fmt->index].desc,
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sizeof(fmt->description));
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fmt->pixelformat = vou_fmt[fmt->index].pfmt;
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return 0;
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}
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static int sh_vou_g_fmt_vid_out(struct file *file, void *priv,
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struct v4l2_format *fmt)
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{
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struct sh_vou_device *vou_dev = video_drvdata(file);
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dev_dbg(vou_dev->v4l2_dev.dev, "%s()\n", __func__);
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fmt->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
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fmt->fmt.pix = vou_dev->pix;
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return 0;
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}
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static const unsigned char vou_scale_h_num[] = {1, 9, 2, 9, 4};
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static const unsigned char vou_scale_h_den[] = {1, 8, 1, 4, 1};
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static const unsigned char vou_scale_h_fld[] = {0, 2, 1, 3};
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static const unsigned char vou_scale_v_num[] = {1, 2, 4};
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static const unsigned char vou_scale_v_den[] = {1, 1, 1};
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static const unsigned char vou_scale_v_fld[] = {0, 1};
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static void sh_vou_configure_geometry(struct sh_vou_device *vou_dev,
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int pix_idx, int w_idx, int h_idx)
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{
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struct sh_vou_fmt *fmt = vou_fmt + pix_idx;
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unsigned int black_left, black_top, width_max,
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frame_in_height, frame_out_height, frame_out_top;
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struct v4l2_rect *rect = &vou_dev->rect;
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struct v4l2_pix_format *pix = &vou_dev->pix;
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u32 vouvcr = 0, dsr_h, dsr_v;
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if (vou_dev->std & V4L2_STD_525_60) {
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width_max = 858;
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/* height_max = 262; */
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} else {
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width_max = 864;
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/* height_max = 312; */
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}
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frame_in_height = pix->height / 2;
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frame_out_height = rect->height / 2;
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frame_out_top = rect->top / 2;
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/*
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* 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,
|
|
VOU_MIN_IMAGE_WIDTH, VOU_MAX_IMAGE_WIDTH, 2,
|
|
&geo->in_height,
|
|
VOU_MIN_IMAGE_HEIGHT, 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 = geo->in_width,
|
|
width_max, height_max, img_height_max;
|
|
int i, idx_h = 0, idx_v = 0;
|
|
|
|
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_h = i;
|
|
best = found;
|
|
}
|
|
if (!err)
|
|
break;
|
|
}
|
|
|
|
geo->output.width = best;
|
|
geo->scale_idx_h = idx_h;
|
|
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_h], vou_scale_h_den[idx_h], 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_v = i;
|
|
best = found;
|
|
}
|
|
if (!err)
|
|
break;
|
|
}
|
|
|
|
geo->output.height = best;
|
|
geo->scale_idx_v = idx_v;
|
|
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_v], vou_scale_v_den[idx_v], best);
|
|
}
|
|
|
|
static int sh_vou_try_fmt_vid_out(struct file *file, void *priv,
|
|
struct v4l2_format *fmt)
|
|
{
|
|
struct sh_vou_device *vou_dev = video_drvdata(file);
|
|
struct v4l2_pix_format *pix = &fmt->fmt.pix;
|
|
unsigned int img_height_max;
|
|
int pix_idx;
|
|
|
|
dev_dbg(vou_dev->v4l2_dev.dev, "%s()\n", __func__);
|
|
|
|
pix->field = V4L2_FIELD_INTERLACED;
|
|
pix->colorspace = V4L2_COLORSPACE_SMPTE170M;
|
|
pix->ycbcr_enc = pix->quantization = 0;
|
|
|
|
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;
|
|
|
|
v4l_bound_align_image(&pix->width,
|
|
VOU_MIN_IMAGE_WIDTH, VOU_MAX_IMAGE_WIDTH, 2,
|
|
&pix->height,
|
|
VOU_MIN_IMAGE_HEIGHT, img_height_max, 1, 0);
|
|
pix->bytesperline = pix->width * vou_fmt[pix_idx].bpl;
|
|
pix->sizeimage = pix->height * ((pix->width * vou_fmt[pix_idx].bpp) >> 3);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int sh_vou_set_fmt_vid_out(struct sh_vou_device *vou_dev,
|
|
struct v4l2_pix_format *pix)
|
|
{
|
|
unsigned int img_height_max;
|
|
struct sh_vou_geometry geo;
|
|
struct v4l2_subdev_format format = {
|
|
.which = V4L2_SUBDEV_FORMAT_ACTIVE,
|
|
/* Revisit: is this the correct code? */
|
|
.format.code = MEDIA_BUS_FMT_YUYV8_2X8,
|
|
.format.field = V4L2_FIELD_INTERLACED,
|
|
.format.colorspace = V4L2_COLORSPACE_SMPTE170M,
|
|
};
|
|
struct v4l2_mbus_framefmt *mbfmt = &format.format;
|
|
int pix_idx;
|
|
int ret;
|
|
|
|
if (vb2_is_busy(&vou_dev->queue))
|
|
return -EBUSY;
|
|
|
|
for (pix_idx = 0; pix_idx < ARRAY_SIZE(vou_fmt); pix_idx++)
|
|
if (vou_fmt[pix_idx].pfmt == pix->pixelformat)
|
|
break;
|
|
|
|
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, pad,
|
|
set_fmt, NULL, &format);
|
|
/* 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);
|
|
|
|
if (vou_dev->std & V4L2_STD_525_60)
|
|
img_height_max = 480;
|
|
else
|
|
img_height_max = 576;
|
|
|
|
/* Sanity checks */
|
|
if ((unsigned)mbfmt->width > VOU_MAX_IMAGE_WIDTH ||
|
|
(unsigned)mbfmt->height > img_height_max ||
|
|
mbfmt->code != MEDIA_BUS_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_s_fmt_vid_out(struct file *file, void *priv,
|
|
struct v4l2_format *fmt)
|
|
{
|
|
struct sh_vou_device *vou_dev = video_drvdata(file);
|
|
int ret = sh_vou_try_fmt_vid_out(file, priv, fmt);
|
|
|
|
if (ret)
|
|
return ret;
|
|
return sh_vou_set_fmt_vid_out(vou_dev, &fmt->fmt.pix);
|
|
}
|
|
|
|
static int sh_vou_enum_output(struct file *file, void *fh,
|
|
struct v4l2_output *a)
|
|
{
|
|
struct sh_vou_device *vou_dev = video_drvdata(file);
|
|
|
|
if (a->index)
|
|
return -EINVAL;
|
|
strlcpy(a->name, "Video Out", sizeof(a->name));
|
|
a->type = V4L2_OUTPUT_TYPE_ANALOG;
|
|
a->std = vou_dev->vdev.tvnorms;
|
|
return 0;
|
|
}
|
|
|
|
static int sh_vou_g_output(struct file *file, void *fh, unsigned int *i)
|
|
{
|
|
*i = 0;
|
|
return 0;
|
|
}
|
|
|
|
static int sh_vou_s_output(struct file *file, void *fh, unsigned int i)
|
|
{
|
|
return i ? -EINVAL : 0;
|
|
}
|
|
|
|
static u32 sh_vou_ntsc_mode(enum sh_vou_bus_fmt bus_fmt)
|
|
{
|
|
switch (bus_fmt) {
|
|
default:
|
|
pr_warn("%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 sh_vou_device *vou_dev = video_drvdata(file);
|
|
int ret;
|
|
|
|
dev_dbg(vou_dev->v4l2_dev.dev, "%s(): 0x%llx\n", __func__, std_id);
|
|
|
|
if (std_id == vou_dev->std)
|
|
return 0;
|
|
|
|
if (vb2_is_busy(&vou_dev->queue))
|
|
return -EBUSY;
|
|
|
|
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;
|
|
|
|
vou_dev->rect.top = vou_dev->rect.left = 0;
|
|
vou_dev->rect.width = VOU_MAX_IMAGE_WIDTH;
|
|
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);
|
|
vou_dev->rect.height = 480;
|
|
} else {
|
|
sh_vou_reg_ab_set(vou_dev, VOUCR, 5 << 29, 7 << 29);
|
|
vou_dev->rect.height = 576;
|
|
}
|
|
|
|
vou_dev->pix.width = vou_dev->rect.width;
|
|
vou_dev->pix.height = vou_dev->rect.height;
|
|
vou_dev->pix.bytesperline =
|
|
vou_dev->pix.width * vou_fmt[vou_dev->pix_idx].bpl;
|
|
vou_dev->pix.sizeimage = vou_dev->pix.height *
|
|
((vou_dev->pix.width * vou_fmt[vou_dev->pix_idx].bpp) >> 3);
|
|
vou_dev->std = std_id;
|
|
sh_vou_set_fmt_vid_out(vou_dev, &vou_dev->pix);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int sh_vou_g_std(struct file *file, void *priv, v4l2_std_id *std)
|
|
{
|
|
struct sh_vou_device *vou_dev = video_drvdata(file);
|
|
|
|
dev_dbg(vou_dev->v4l2_dev.dev, "%s()\n", __func__);
|
|
|
|
*std = vou_dev->std;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int sh_vou_log_status(struct file *file, void *priv)
|
|
{
|
|
struct sh_vou_device *vou_dev = video_drvdata(file);
|
|
|
|
pr_info("VOUER: 0x%08x\n", sh_vou_reg_a_read(vou_dev, VOUER));
|
|
pr_info("VOUCR: 0x%08x\n", sh_vou_reg_a_read(vou_dev, VOUCR));
|
|
pr_info("VOUSTR: 0x%08x\n", sh_vou_reg_a_read(vou_dev, VOUSTR));
|
|
pr_info("VOUVCR: 0x%08x\n", sh_vou_reg_a_read(vou_dev, VOUVCR));
|
|
pr_info("VOUISR: 0x%08x\n", sh_vou_reg_a_read(vou_dev, VOUISR));
|
|
pr_info("VOUBCR: 0x%08x\n", sh_vou_reg_a_read(vou_dev, VOUBCR));
|
|
pr_info("VOUDPR: 0x%08x\n", sh_vou_reg_a_read(vou_dev, VOUDPR));
|
|
pr_info("VOUDSR: 0x%08x\n", sh_vou_reg_a_read(vou_dev, VOUDSR));
|
|
pr_info("VOUVPR: 0x%08x\n", sh_vou_reg_a_read(vou_dev, VOUVPR));
|
|
pr_info("VOUIR: 0x%08x\n", sh_vou_reg_a_read(vou_dev, VOUIR));
|
|
pr_info("VOUSRR: 0x%08x\n", sh_vou_reg_a_read(vou_dev, VOUSRR));
|
|
pr_info("VOUMSR: 0x%08x\n", sh_vou_reg_a_read(vou_dev, VOUMSR));
|
|
pr_info("VOUHIR: 0x%08x\n", sh_vou_reg_a_read(vou_dev, VOUHIR));
|
|
pr_info("VOUDFR: 0x%08x\n", sh_vou_reg_a_read(vou_dev, VOUDFR));
|
|
pr_info("VOUAD1R: 0x%08x\n", sh_vou_reg_a_read(vou_dev, VOUAD1R));
|
|
pr_info("VOUAD2R: 0x%08x\n", sh_vou_reg_a_read(vou_dev, VOUAD2R));
|
|
pr_info("VOUAIR: 0x%08x\n", sh_vou_reg_a_read(vou_dev, VOUAIR));
|
|
pr_info("VOUSWR: 0x%08x\n", sh_vou_reg_a_read(vou_dev, VOUSWR));
|
|
pr_info("VOURCR: 0x%08x\n", sh_vou_reg_a_read(vou_dev, VOURCR));
|
|
pr_info("VOURPR: 0x%08x\n", sh_vou_reg_a_read(vou_dev, VOURPR));
|
|
return 0;
|
|
}
|
|
|
|
static int sh_vou_g_selection(struct file *file, void *fh,
|
|
struct v4l2_selection *sel)
|
|
{
|
|
struct sh_vou_device *vou_dev = video_drvdata(file);
|
|
|
|
if (sel->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
|
|
return -EINVAL;
|
|
switch (sel->target) {
|
|
case V4L2_SEL_TGT_COMPOSE:
|
|
sel->r = vou_dev->rect;
|
|
break;
|
|
case V4L2_SEL_TGT_COMPOSE_DEFAULT:
|
|
case V4L2_SEL_TGT_COMPOSE_BOUNDS:
|
|
sel->r.left = 0;
|
|
sel->r.top = 0;
|
|
sel->r.width = VOU_MAX_IMAGE_WIDTH;
|
|
if (vou_dev->std & V4L2_STD_525_60)
|
|
sel->r.height = 480;
|
|
else
|
|
sel->r.height = 576;
|
|
break;
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/* Assume a dull encoder, do all the work ourselves. */
|
|
static int sh_vou_s_selection(struct file *file, void *fh,
|
|
struct v4l2_selection *sel)
|
|
{
|
|
struct v4l2_rect *rect = &sel->r;
|
|
struct sh_vou_device *vou_dev = video_drvdata(file);
|
|
struct v4l2_subdev_selection sd_sel = {
|
|
.which = V4L2_SUBDEV_FORMAT_ACTIVE,
|
|
.target = V4L2_SEL_TGT_COMPOSE,
|
|
};
|
|
struct v4l2_pix_format *pix = &vou_dev->pix;
|
|
struct sh_vou_geometry geo;
|
|
struct v4l2_subdev_format format = {
|
|
.which = V4L2_SUBDEV_FORMAT_ACTIVE,
|
|
/* Revisit: is this the correct code? */
|
|
.format.code = MEDIA_BUS_FMT_YUYV8_2X8,
|
|
.format.field = V4L2_FIELD_INTERLACED,
|
|
.format.colorspace = V4L2_COLORSPACE_SMPTE170M,
|
|
};
|
|
unsigned int img_height_max;
|
|
int ret;
|
|
|
|
if (sel->type != V4L2_BUF_TYPE_VIDEO_OUTPUT ||
|
|
sel->target != V4L2_SEL_TGT_COMPOSE)
|
|
return -EINVAL;
|
|
|
|
if (vb2_is_busy(&vou_dev->queue))
|
|
return -EBUSY;
|
|
|
|
if (vou_dev->std & V4L2_STD_525_60)
|
|
img_height_max = 480;
|
|
else
|
|
img_height_max = 576;
|
|
|
|
v4l_bound_align_image(&rect->width,
|
|
VOU_MIN_IMAGE_WIDTH, VOU_MAX_IMAGE_WIDTH, 1,
|
|
&rect->height,
|
|
VOU_MIN_IMAGE_HEIGHT, 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_sel.r.width = geo.output.width;
|
|
sd_sel.r.height = geo.output.height;
|
|
/*
|
|
* We first issue a S_SELECTION, so that the subsequent S_FMT delivers the
|
|
* final encoder configuration.
|
|
*/
|
|
v4l2_device_call_until_err(&vou_dev->v4l2_dev, 0, pad,
|
|
set_selection, NULL, &sd_sel);
|
|
format.format.width = geo.output.width;
|
|
format.format.height = geo.output.height;
|
|
ret = v4l2_device_call_until_err(&vou_dev->v4l2_dev, 0, pad,
|
|
set_fmt, NULL, &format);
|
|
/* Must be implemented, so, don't check for -ENOIOCTLCMD */
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
/* Sanity checks */
|
|
if ((unsigned)format.format.width > VOU_MAX_IMAGE_WIDTH ||
|
|
(unsigned)format.format.height > img_height_max ||
|
|
format.format.code != MEDIA_BUS_FMT_YUYV8_2X8)
|
|
return -EIO;
|
|
|
|
geo.output.width = format.format.width;
|
|
geo.output.height = format.format.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;
|
|
}
|
|
|
|
static irqreturn_t sh_vou_isr(int irq, void *dev_id)
|
|
{
|
|
struct sh_vou_device *vou_dev = dev_id;
|
|
static unsigned long j;
|
|
struct sh_vou_buffer *vb;
|
|
static int cnt;
|
|
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->buf_list)) {
|
|
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;
|
|
if (list_is_singular(&vb->list)) {
|
|
/* Keep cycling while no next buffer is available */
|
|
sh_vou_schedule_next(vou_dev, &vb->vb);
|
|
spin_unlock(&vou_dev->lock);
|
|
return IRQ_HANDLED;
|
|
}
|
|
|
|
list_del(&vb->list);
|
|
|
|
vb->vb.vb2_buf.timestamp = ktime_get_ns();
|
|
vb->vb.sequence = vou_dev->sequence++;
|
|
vb->vb.field = V4L2_FIELD_INTERLACED;
|
|
vb2_buffer_done(&vb->vb.vb2_buf, VB2_BUF_STATE_DONE);
|
|
|
|
vou_dev->active = list_entry(vou_dev->buf_list.next,
|
|
struct sh_vou_buffer, list);
|
|
|
|
if (list_is_singular(&vou_dev->buf_list)) {
|
|
/* Keep cycling while no next buffer is available */
|
|
sh_vou_schedule_next(vou_dev, &vou_dev->active->vb);
|
|
} else {
|
|
struct sh_vou_buffer *new = list_entry(vou_dev->active->list.next,
|
|
struct sh_vou_buffer, list);
|
|
sh_vou_schedule_next(vou_dev, &new->vb);
|
|
}
|
|
|
|
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);
|
|
|
|
sh_vou_set_fmt_vid_out(vou_dev, &vou_dev->pix);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* File operations */
|
|
static int sh_vou_open(struct file *file)
|
|
{
|
|
struct sh_vou_device *vou_dev = video_drvdata(file);
|
|
int err;
|
|
|
|
if (mutex_lock_interruptible(&vou_dev->fop_lock))
|
|
return -ERESTARTSYS;
|
|
|
|
err = v4l2_fh_open(file);
|
|
if (err)
|
|
goto done_open;
|
|
if (v4l2_fh_is_singular_file(file) &&
|
|
vou_dev->status == SH_VOU_INITIALISING) {
|
|
/* First open */
|
|
pm_runtime_get_sync(vou_dev->v4l2_dev.dev);
|
|
err = sh_vou_hw_init(vou_dev);
|
|
if (err < 0) {
|
|
pm_runtime_put(vou_dev->v4l2_dev.dev);
|
|
v4l2_fh_release(file);
|
|
} else {
|
|
vou_dev->status = SH_VOU_IDLE;
|
|
}
|
|
}
|
|
done_open:
|
|
mutex_unlock(&vou_dev->fop_lock);
|
|
return err;
|
|
}
|
|
|
|
static int sh_vou_release(struct file *file)
|
|
{
|
|
struct sh_vou_device *vou_dev = video_drvdata(file);
|
|
bool is_last;
|
|
|
|
mutex_lock(&vou_dev->fop_lock);
|
|
is_last = v4l2_fh_is_singular_file(file);
|
|
_vb2_fop_release(file, NULL);
|
|
if (is_last) {
|
|
/* Last close */
|
|
vou_dev->status = SH_VOU_INITIALISING;
|
|
sh_vou_reg_a_set(vou_dev, VOUER, 0, 0x101);
|
|
pm_runtime_put(vou_dev->v4l2_dev.dev);
|
|
}
|
|
mutex_unlock(&vou_dev->fop_lock);
|
|
return 0;
|
|
}
|
|
|
|
/* 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 = vb2_ioctl_reqbufs,
|
|
.vidioc_create_bufs = vb2_ioctl_create_bufs,
|
|
.vidioc_querybuf = vb2_ioctl_querybuf,
|
|
.vidioc_qbuf = vb2_ioctl_qbuf,
|
|
.vidioc_dqbuf = vb2_ioctl_dqbuf,
|
|
.vidioc_prepare_buf = vb2_ioctl_prepare_buf,
|
|
.vidioc_streamon = vb2_ioctl_streamon,
|
|
.vidioc_streamoff = vb2_ioctl_streamoff,
|
|
.vidioc_expbuf = vb2_ioctl_expbuf,
|
|
.vidioc_g_output = sh_vou_g_output,
|
|
.vidioc_s_output = sh_vou_s_output,
|
|
.vidioc_enum_output = sh_vou_enum_output,
|
|
.vidioc_s_std = sh_vou_s_std,
|
|
.vidioc_g_std = sh_vou_g_std,
|
|
.vidioc_g_selection = sh_vou_g_selection,
|
|
.vidioc_s_selection = sh_vou_s_selection,
|
|
.vidioc_log_status = sh_vou_log_status,
|
|
};
|
|
|
|
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 = vb2_fop_mmap,
|
|
.poll = vb2_fop_poll,
|
|
.write = vb2_fop_write,
|
|
};
|
|
|
|
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 */
|
|
.vfl_dir = VFL_DIR_TX,
|
|
};
|
|
|
|
static int 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;
|
|
struct v4l2_subdev *subdev;
|
|
struct vb2_queue *q;
|
|
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 = devm_kzalloc(&pdev->dev, sizeof(*vou_dev), GFP_KERNEL);
|
|
if (!vou_dev)
|
|
return -ENOMEM;
|
|
|
|
INIT_LIST_HEAD(&vou_dev->buf_list);
|
|
spin_lock_init(&vou_dev->lock);
|
|
mutex_init(&vou_dev->fop_lock);
|
|
vou_dev->pdata = vou_pdata;
|
|
vou_dev->status = SH_VOU_INITIALISING;
|
|
vou_dev->pix_idx = 1;
|
|
|
|
rect = &vou_dev->rect;
|
|
pix = &vou_dev->pix;
|
|
|
|
/* Fill in defaults */
|
|
vou_dev->std = V4L2_STD_NTSC_M;
|
|
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_NV16;
|
|
pix->field = V4L2_FIELD_INTERLACED;
|
|
pix->bytesperline = VOU_MAX_IMAGE_WIDTH;
|
|
pix->sizeimage = VOU_MAX_IMAGE_WIDTH * 2 * 480;
|
|
pix->colorspace = V4L2_COLORSPACE_SMPTE170M;
|
|
|
|
vou_dev->base = devm_ioremap_resource(&pdev->dev, reg_res);
|
|
if (IS_ERR(vou_dev->base))
|
|
return PTR_ERR(vou_dev->base);
|
|
|
|
ret = devm_request_irq(&pdev->dev, irq, sh_vou_isr, 0, "vou", vou_dev);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
ret = v4l2_device_register(&pdev->dev, &vou_dev->v4l2_dev);
|
|
if (ret < 0) {
|
|
dev_err(&pdev->dev, "Error registering v4l2 device\n");
|
|
return ret;
|
|
}
|
|
|
|
vdev = &vou_dev->vdev;
|
|
*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_empty;
|
|
vdev->lock = &vou_dev->fop_lock;
|
|
|
|
video_set_drvdata(vdev, vou_dev);
|
|
|
|
/* Initialize the vb2 queue */
|
|
q = &vou_dev->queue;
|
|
q->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
|
|
q->io_modes = VB2_MMAP | VB2_DMABUF | VB2_WRITE;
|
|
q->drv_priv = vou_dev;
|
|
q->buf_struct_size = sizeof(struct sh_vou_buffer);
|
|
q->ops = &sh_vou_qops;
|
|
q->mem_ops = &vb2_dma_contig_memops;
|
|
q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
|
|
q->min_buffers_needed = 2;
|
|
q->lock = &vou_dev->fop_lock;
|
|
q->dev = &pdev->dev;
|
|
ret = vb2_queue_init(q);
|
|
if (ret)
|
|
goto ei2cgadap;
|
|
|
|
vdev->queue = q;
|
|
INIT_LIST_HEAD(&vou_dev->buf_list);
|
|
|
|
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:
|
|
pm_runtime_disable(&pdev->dev);
|
|
v4l2_device_unregister(&vou_dev->v4l2_dev);
|
|
return ret;
|
|
}
|
|
|
|
static int sh_vou_remove(struct platform_device *pdev)
|
|
{
|
|
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);
|
|
|
|
pm_runtime_disable(&pdev->dev);
|
|
video_unregister_device(&vou_dev->vdev);
|
|
i2c_put_adapter(client->adapter);
|
|
v4l2_device_unregister(&vou_dev->v4l2_dev);
|
|
return 0;
|
|
}
|
|
|
|
static struct platform_driver __refdata sh_vou = {
|
|
.remove = sh_vou_remove,
|
|
.driver = {
|
|
.name = "sh-vou",
|
|
},
|
|
};
|
|
|
|
module_platform_driver_probe(sh_vou, sh_vou_probe);
|
|
|
|
MODULE_DESCRIPTION("SuperH VOU driver");
|
|
MODULE_AUTHOR("Guennadi Liakhovetski <g.liakhovetski@gmx.de>");
|
|
MODULE_LICENSE("GPL v2");
|
|
MODULE_VERSION("0.1.0");
|
|
MODULE_ALIAS("platform:sh-vou");
|