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1375 lines
37 KiB
1375 lines
37 KiB
// SPDX-License-Identifier: GPL-2.0 |
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/* |
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* SuperH Video Output Unit (VOU) driver |
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* |
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* Copyright (C) 2010, Guennadi Liakhovetski <[email protected]> |
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*/ |
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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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|
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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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|
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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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|
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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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|
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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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|
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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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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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.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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.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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.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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.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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.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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fallthrough; |
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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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strscpy(cap->card, "SuperH VOU", sizeof(cap->card)); |
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strscpy(cap->driver, "sh-vou", sizeof(cap->driver)); |
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strscpy(cap->bus_info, "platform:sh-vou", sizeof(cap->bus_info)); |
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return 0; |
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} |
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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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|
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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->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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|
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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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|
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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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/* |
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* Cropping scheme: max useful image is 720x480, and the total video |
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* area is 858x525 (NTSC) or 864x625 (PAL). AK8813 / 8814 starts |
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* sampling data beginning with fixed 276th (NTSC) / 288th (PAL) clock, |
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* of which the first 33 / 25 clocks HSYNC must be held active. This |
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* has to be configured in CR[HW]. 1 pixel equals 2 clock periods. |
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* This gives CR[HW] = 16 / 12, VPR[HVP] = 138 / 144, which gives |
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* exactly 858 - 138 = 864 - 144 = 720! We call the out-of-display area, |
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* beyond DSR, specified on the left and top by the VPR register "black |
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* pixels" and out-of-image area (DPR) "background pixels." We fix VPR |
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* at 138 / 144 : 20, because that's the HSYNC timing, that our first |
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* client requires, and that's exactly what leaves us 720 pixels for the |
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* image; we leave VPR[VVP] at default 20 for now, because the client |
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* doesn't seem to have any special requirements for it. Otherwise we |
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* could also set it to max - 240 = 22 / 72. Thus VPR depends only on |
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* the selected standard, and DPR and DSR are selected according to |
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* cropping. Q: how does the client detect the first valid line? Does |
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* HSYNC stay inactive during invalid (black) lines? |
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*/ |
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black_left = width_max - VOU_MAX_IMAGE_WIDTH; |
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black_top = 20; |
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|
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dsr_h = rect->width + rect->left; |
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dsr_v = frame_out_height + frame_out_top; |
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|
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dev_dbg(vou_dev->v4l2_dev.dev, |
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"image %ux%u, black %u:%u, offset %u:%u, display %ux%u\n", |
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pix->width, frame_in_height, black_left, black_top, |
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rect->left, frame_out_top, dsr_h, dsr_v); |
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|
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/* VOUISR height - half of a frame height in frame mode */ |
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sh_vou_reg_ab_write(vou_dev, VOUISR, (pix->width << 16) | frame_in_height); |
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sh_vou_reg_ab_write(vou_dev, VOUVPR, (black_left << 16) | black_top); |
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sh_vou_reg_ab_write(vou_dev, VOUDPR, (rect->left << 16) | frame_out_top); |
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sh_vou_reg_ab_write(vou_dev, VOUDSR, (dsr_h << 16) | dsr_v); |
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|
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/* |
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* if necessary, we could set VOUHIR to |
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* max(black_left + dsr_h, width_max) here |
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*/ |
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|
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if (w_idx) |
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vouvcr |= (1 << 15) | (vou_scale_h_fld[w_idx - 1] << 4); |
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if (h_idx) |
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vouvcr |= (1 << 14) | vou_scale_v_fld[h_idx - 1]; |
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|
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dev_dbg(vou_dev->v4l2_dev.dev, "0x%08x: scaling 0x%x\n", |
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fmt->pfmt, vouvcr); |
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|
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/* To produce a colour bar for testing set bit 23 of VOUVCR */ |
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sh_vou_reg_ab_write(vou_dev, VOUVCR, vouvcr); |
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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; |
|
strscpy(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); |
|
fallthrough; |
|
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: |
|
* https://linuxtv.org/downloads/v4l-dvb-apis/uapi/v4l/crop.html#cropping-structures |
|
*/ |
|
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 */ |
|
err = pm_runtime_resume_and_get(vou_dev->v4l2_dev.dev); |
|
if (err < 0) { |
|
v4l2_fh_release(file); |
|
goto done_open; |
|
} |
|
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, |
|
.device_caps = V4L2_CAP_VIDEO_OUTPUT | V4L2_CAP_READWRITE | |
|
V4L2_CAP_STREAMING, |
|
}; |
|
|
|
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_VIDEO, -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 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 <[email protected]>"); |
|
MODULE_LICENSE("GPL v2"); |
|
MODULE_VERSION("0.1.0"); |
|
MODULE_ALIAS("platform:sh-vou");
|
|
|