Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20;
From:   Christoph Hellwig <hch@lst.de>
To:     Yoshinori Sato <ysato@users.sourceforge.jp>,
        Rich Felker <dalias@libc.org>, Arnd Bergmann <arnd@arndb.de>,
        Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc:     Laurent Pinchart <laurent.pinchart@ideasonboard.com>,
        Kieran Bingham <kieran.bingham+renesas@ideasonboard.com>,
        Geert Uytterhoeven <geert+renesas@glider.be>,
        linux-kernel@vger.kernel.org, linux-watchdog@vger.kernel.org,
        devicetree@vger.kernel.org, linux-arch@vger.kernel.org,
        dmaengine@vger.kernel.org, dri-devel@lists.freedesktop.org,
        linux-renesas-soc@vger.kernel.org, linux-i2c@vger.kernel.org,
        linux-input@vger.kernel.org, linux-media@vger.kernel.org,
        linux-mmc@vger.kernel.org, linux-mtd@lists.infradead.org,
        netdev@vger.kernel.org, linux-gpio@vger.kernel.org,
        linux-rtc@vger.kernel.org, linux-spi@vger.kernel.org,
        linux-serial@vger.kernel.org, linux-usb@vger.kernel.org,
        linux-fbdev@vger.kernel.org, alsa-devel@alsa-project.org,
        linux-sh@vger.kernel.org
Subject: [PATCH 20/22] media: remove sh_vou
Date:   Fri, 13 Jan 2023 07:23:37 +0100
Message-Id: <20230113062339.1909087-21-hch@lst.de>
In-Reply-To: <20230113062339.1909087-1-hch@lst.de>
References: <20230113062339.1909087-1-hch@lst.de>
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit
Precedence: bulk

Now that arch/sh is removed this driver is dead code.

Signed-off-by: Christoph Hellwig <hch@lst.de>
---
 drivers/media/platform/renesas/Kconfig  |    9 -
 drivers/media/platform/renesas/Makefile |    1 -
 drivers/media/platform/renesas/sh_vou.c | 1375 -----------------------
 3 files changed, 1385 deletions(-)
 delete mode 100644 drivers/media/platform/renesas/sh_vou.c

diff --git a/drivers/media/platform/renesas/Kconfig b/drivers/media/platform/renesas/Kconfig
index 0231672a7e1c32..935b24b864380e 100644
--- a/drivers/media/platform/renesas/Kconfig
+++ b/drivers/media/platform/renesas/Kconfig
@@ -31,15 +31,6 @@ config VIDEO_RCAR_ISP
 	  To compile this driver as a module, choose M here: the
 	  module will be called rcar-isp.
 
-config VIDEO_SH_VOU
-	tristate "SuperH VOU video output driver"
-	depends on V4L_PLATFORM_DRIVERS
-	depends on VIDEO_DEV && I2C
-	depends on ARCH_SHMOBILE || COMPILE_TEST
-	select VIDEOBUF2_DMA_CONTIG
-	help
-	  Support for the Video Output Unit (VOU) on SuperH SoCs.
-
 source "drivers/media/platform/renesas/rcar-vin/Kconfig"
 source "drivers/media/platform/renesas/rzg2l-cru/Kconfig"
 
diff --git a/drivers/media/platform/renesas/Makefile b/drivers/media/platform/renesas/Makefile
index 55854e8688870f..1ae7d825073df3 100644
--- a/drivers/media/platform/renesas/Makefile
+++ b/drivers/media/platform/renesas/Makefile
@@ -13,4 +13,3 @@ obj-$(CONFIG_VIDEO_RENESAS_CEU) += renesas-ceu.o
 obj-$(CONFIG_VIDEO_RENESAS_FCP) += rcar-fcp.o
 obj-$(CONFIG_VIDEO_RENESAS_FDP1) += rcar_fdp1.o
 obj-$(CONFIG_VIDEO_RENESAS_JPU) += rcar_jpu.o
-obj-$(CONFIG_VIDEO_SH_VOU) += sh_vou.o
diff --git a/drivers/media/platform/renesas/sh_vou.c b/drivers/media/platform/renesas/sh_vou.c
deleted file mode 100644
index ca4310e26c49ee..00000000000000
--- a/drivers/media/platform/renesas/sh_vou.c
+++ /dev/null
@@ -1,1375 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- * SuperH Video Output Unit (VOU) driver
- *
- * Copyright (C) 2010, Guennadi Liakhovetski <g.liakhovetski@gmx.de>
- */
-
-#include <linux/dma-mapping.h>
-#include <linux/delay.h>
-#include <linux/errno.h>
-#include <linux/fs.h>
-#include <linux/i2c.h>
-#include <linux/init.h>
-#include <linux/interrupt.h>
-#include <linux/kernel.h>
-#include <linux/platform_device.h>
-#include <linux/pm_runtime.h>
-#include <linux/slab.h>
-#include <linux/videodev2.h>
-#include <linux/module.h>
-
-#include <media/drv-intf/sh_vou.h>
-#include <media/v4l2-common.h>
-#include <media/v4l2-device.h>
-#include <media/v4l2-ioctl.h>
-#include <media/v4l2-mediabus.h>
-#include <media/videobuf2-v4l2.h>
-#include <media/videobuf2-dma-contig.h>
-
-/* Mirror addresses are not available for all registers */
-#define VOUER	0
-#define VOUCR	4
-#define VOUSTR	8
-#define VOUVCR	0xc
-#define VOUISR	0x10
-#define VOUBCR	0x14
-#define VOUDPR	0x18
-#define VOUDSR	0x1c
-#define VOUVPR	0x20
-#define VOUIR	0x24
-#define VOUSRR	0x28
-#define VOUMSR	0x2c
-#define VOUHIR	0x30
-#define VOUDFR	0x34
-#define VOUAD1R	0x38
-#define VOUAD2R	0x3c
-#define VOUAIR	0x40
-#define VOUSWR	0x44
-#define VOURCR	0x48
-#define VOURPR	0x50
-
-enum sh_vou_status {
-	SH_VOU_IDLE,
-	SH_VOU_INITIALISING,
-	SH_VOU_RUNNING,
-};
-
-#define VOU_MIN_IMAGE_WIDTH	16
-#define VOU_MAX_IMAGE_WIDTH	720
-#define VOU_MIN_IMAGE_HEIGHT	16
-
-struct sh_vou_buffer {
-	struct vb2_v4l2_buffer vb;
-	struct list_head list;
-};
-
-static inline struct
-sh_vou_buffer *to_sh_vou_buffer(struct vb2_v4l2_buffer *vb2)
-{
-	return container_of(vb2, struct sh_vou_buffer, vb);
-}
-
-struct sh_vou_device {
-	struct v4l2_device v4l2_dev;
-	struct video_device vdev;
-	struct sh_vou_pdata *pdata;
-	spinlock_t lock;
-	void __iomem *base;
-	/* State information */
-	struct v4l2_pix_format pix;
-	struct v4l2_rect rect;
-	struct list_head buf_list;
-	v4l2_std_id std;
-	int pix_idx;
-	struct vb2_queue queue;
-	struct sh_vou_buffer *active;
-	enum sh_vou_status status;
-	unsigned sequence;
-	struct mutex fop_lock;
-};
-
-/* Register access routines for sides A, B and mirror addresses */
-static void sh_vou_reg_a_write(struct sh_vou_device *vou_dev, unsigned int reg,
-			       u32 value)
-{
-	__raw_writel(value, vou_dev->base + reg);
-}
-
-static void sh_vou_reg_ab_write(struct sh_vou_device *vou_dev, unsigned int reg,
-				u32 value)
-{
-	__raw_writel(value, vou_dev->base + reg);
-	__raw_writel(value, vou_dev->base + reg + 0x1000);
-}
-
-static void sh_vou_reg_m_write(struct sh_vou_device *vou_dev, unsigned int reg,
-			       u32 value)
-{
-	__raw_writel(value, vou_dev->base + reg + 0x2000);
-}
-
-static u32 sh_vou_reg_a_read(struct sh_vou_device *vou_dev, unsigned int reg)
-{
-	return __raw_readl(vou_dev->base + reg);
-}
-
-static void sh_vou_reg_a_set(struct sh_vou_device *vou_dev, unsigned int reg,
-			     u32 value, u32 mask)
-{
-	u32 old = __raw_readl(vou_dev->base + reg);
-
-	value = (value & mask) | (old & ~mask);
-	__raw_writel(value, vou_dev->base + reg);
-}
-
-static void sh_vou_reg_b_set(struct sh_vou_device *vou_dev, unsigned int reg,
-			     u32 value, u32 mask)
-{
-	sh_vou_reg_a_set(vou_dev, reg + 0x1000, value, mask);
-}
-
-static void sh_vou_reg_ab_set(struct sh_vou_device *vou_dev, unsigned int reg,
-			      u32 value, u32 mask)
-{
-	sh_vou_reg_a_set(vou_dev, reg, value, mask);
-	sh_vou_reg_b_set(vou_dev, reg, value, mask);
-}
-
-struct sh_vou_fmt {
-	u32		pfmt;
-	unsigned char	bpp;
-	unsigned char	bpl;
-	unsigned char	rgb;
-	unsigned char	yf;
-	unsigned char	pkf;
-};
-
-/* Further pixel formats can be added */
-static struct sh_vou_fmt vou_fmt[] = {
-	{
-		.pfmt	= V4L2_PIX_FMT_NV12,
-		.bpp	= 12,
-		.bpl	= 1,
-		.yf	= 0,
-		.rgb	= 0,
-	},
-	{
-		.pfmt	= V4L2_PIX_FMT_NV16,
-		.bpp	= 16,
-		.bpl	= 1,
-		.yf	= 1,
-		.rgb	= 0,
-	},
-	{
-		.pfmt	= V4L2_PIX_FMT_RGB24,
-		.bpp	= 24,
-		.bpl	= 3,
-		.pkf	= 2,
-		.rgb	= 1,
-	},
-	{
-		.pfmt	= V4L2_PIX_FMT_RGB565,
-		.bpp	= 16,
-		.bpl	= 2,
-		.pkf	= 3,
-		.rgb	= 1,
-	},
-	{
-		.pfmt	= V4L2_PIX_FMT_RGB565X,
-		.bpp	= 16,
-		.bpl	= 2,
-		.pkf	= 3,
-		.rgb	= 1,
-	},
-};
-
-static void sh_vou_schedule_next(struct sh_vou_device *vou_dev,
-				 struct vb2_v4l2_buffer *vbuf)
-{
-	dma_addr_t addr1, addr2;
-
-	addr1 = vb2_dma_contig_plane_dma_addr(&vbuf->vb2_buf, 0);
-	switch (vou_dev->pix.pixelformat) {
-	case V4L2_PIX_FMT_NV12:
-	case V4L2_PIX_FMT_NV16:
-		addr2 = addr1 + vou_dev->pix.width * vou_dev->pix.height;
-		break;
-	default:
-		addr2 = 0;
-	}
-
-	sh_vou_reg_m_write(vou_dev, VOUAD1R, addr1);
-	sh_vou_reg_m_write(vou_dev, VOUAD2R, addr2);
-}
-
-static void sh_vou_stream_config(struct sh_vou_device *vou_dev)
-{
-	unsigned int row_coeff;
-#ifdef __LITTLE_ENDIAN
-	u32 dataswap = 7;
-#else
-	u32 dataswap = 0;
-#endif
-
-	switch (vou_dev->pix.pixelformat) {
-	default:
-	case V4L2_PIX_FMT_NV12:
-	case V4L2_PIX_FMT_NV16:
-		row_coeff = 1;
-		break;
-	case V4L2_PIX_FMT_RGB565:
-		dataswap ^= 1;
-		fallthrough;
-	case V4L2_PIX_FMT_RGB565X:
-		row_coeff = 2;
-		break;
-	case V4L2_PIX_FMT_RGB24:
-		row_coeff = 3;
-		break;
-	}
-
-	sh_vou_reg_a_write(vou_dev, VOUSWR, dataswap);
-	sh_vou_reg_ab_write(vou_dev, VOUAIR, vou_dev->pix.width * row_coeff);
-}
-
-/* Locking: caller holds fop_lock mutex */
-static int sh_vou_queue_setup(struct vb2_queue *vq,
-		       unsigned int *nbuffers, unsigned int *nplanes,
-		       unsigned int sizes[], struct device *alloc_devs[])
-{
-	struct sh_vou_device *vou_dev = vb2_get_drv_priv(vq);
-	struct v4l2_pix_format *pix = &vou_dev->pix;
-	int bytes_per_line = vou_fmt[vou_dev->pix_idx].bpp * pix->width / 8;
-
-	dev_dbg(vou_dev->v4l2_dev.dev, "%s()\n", __func__);
-
-	if (*nplanes)
-		return sizes[0] < pix->height * bytes_per_line ? -EINVAL : 0;
-	*nplanes = 1;
-	sizes[0] = pix->height * bytes_per_line;
-	return 0;
-}
-
-static int sh_vou_buf_prepare(struct vb2_buffer *vb)
-{
-	struct sh_vou_device *vou_dev = vb2_get_drv_priv(vb->vb2_queue);
-	struct v4l2_pix_format *pix = &vou_dev->pix;
-	unsigned bytes_per_line = vou_fmt[vou_dev->pix_idx].bpp * pix->width / 8;
-	unsigned size = pix->height * bytes_per_line;
-
-	dev_dbg(vou_dev->v4l2_dev.dev, "%s()\n", __func__);
-
-	if (vb2_plane_size(vb, 0) < size) {
-		/* User buffer too small */
-		dev_warn(vou_dev->v4l2_dev.dev, "buffer too small (%lu < %u)\n",
-			 vb2_plane_size(vb, 0), size);
-		return -EINVAL;
-	}
-
-	vb2_set_plane_payload(vb, 0, size);
-	return 0;
-}
-
-/* Locking: caller holds fop_lock mutex and vq->irqlock spinlock */
-static void sh_vou_buf_queue(struct vb2_buffer *vb)
-{
-	struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
-	struct sh_vou_device *vou_dev = vb2_get_drv_priv(vb->vb2_queue);
-	struct sh_vou_buffer *shbuf = to_sh_vou_buffer(vbuf);
-	unsigned long flags;
-
-	spin_lock_irqsave(&vou_dev->lock, flags);
-	list_add_tail(&shbuf->list, &vou_dev->buf_list);
-	spin_unlock_irqrestore(&vou_dev->lock, flags);
-}
-
-static int sh_vou_start_streaming(struct vb2_queue *vq, unsigned int count)
-{
-	struct sh_vou_device *vou_dev = vb2_get_drv_priv(vq);
-	struct sh_vou_buffer *buf, *node;
-	int ret;
-
-	vou_dev->sequence = 0;
-	ret = v4l2_device_call_until_err(&vou_dev->v4l2_dev, 0,
-					 video, s_stream, 1);
-	if (ret < 0 && ret != -ENOIOCTLCMD) {
-		list_for_each_entry_safe(buf, node, &vou_dev->buf_list, list) {
-			vb2_buffer_done(&buf->vb.vb2_buf,
-					VB2_BUF_STATE_QUEUED);
-			list_del(&buf->list);
-		}
-		vou_dev->active = NULL;
-		return ret;
-	}
-
-	buf = list_entry(vou_dev->buf_list.next, struct sh_vou_buffer, list);
-
-	vou_dev->active = buf;
-
-	/* Start from side A: we use mirror addresses, so, set B */
-	sh_vou_reg_a_write(vou_dev, VOURPR, 1);
-	dev_dbg(vou_dev->v4l2_dev.dev, "%s: first buffer status 0x%x\n",
-		__func__, sh_vou_reg_a_read(vou_dev, VOUSTR));
-	sh_vou_schedule_next(vou_dev, &buf->vb);
-
-	buf = list_entry(buf->list.next, struct sh_vou_buffer, list);
-
-	/* Second buffer - initialise register side B */
-	sh_vou_reg_a_write(vou_dev, VOURPR, 0);
-	sh_vou_schedule_next(vou_dev, &buf->vb);
-
-	/* Register side switching with frame VSYNC */
-	sh_vou_reg_a_write(vou_dev, VOURCR, 5);
-
-	sh_vou_stream_config(vou_dev);
-	/* Enable End-of-Frame (VSYNC) interrupts */
-	sh_vou_reg_a_write(vou_dev, VOUIR, 0x10004);
-
-	/* Two buffers on the queue - activate the hardware */
-	vou_dev->status = SH_VOU_RUNNING;
-	sh_vou_reg_a_write(vou_dev, VOUER, 0x107);
-	return 0;
-}
-
-static void sh_vou_stop_streaming(struct vb2_queue *vq)
-{
-	struct sh_vou_device *vou_dev = vb2_get_drv_priv(vq);
-	struct sh_vou_buffer *buf, *node;
-	unsigned long flags;
-
-	v4l2_device_call_until_err(&vou_dev->v4l2_dev, 0,
-					 video, s_stream, 0);
-	/* disable output */
-	sh_vou_reg_a_set(vou_dev, VOUER, 0, 1);
-	/* ...but the current frame will complete */
-	sh_vou_reg_a_set(vou_dev, VOUIR, 0, 0x30000);
-	msleep(50);
-	spin_lock_irqsave(&vou_dev->lock, flags);
-	list_for_each_entry_safe(buf, node, &vou_dev->buf_list, list) {
-		vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_ERROR);
-		list_del(&buf->list);
-	}
-	vou_dev->active = NULL;
-	spin_unlock_irqrestore(&vou_dev->lock, flags);
-}
-
-static const struct vb2_ops sh_vou_qops = {
-	.queue_setup		= sh_vou_queue_setup,
-	.buf_prepare		= sh_vou_buf_prepare,
-	.buf_queue		= sh_vou_buf_queue,
-	.start_streaming	= sh_vou_start_streaming,
-	.stop_streaming		= sh_vou_stop_streaming,
-	.wait_prepare		= vb2_ops_wait_prepare,
-	.wait_finish		= vb2_ops_wait_finish,
-};
-
-/* Video IOCTLs */
-static int sh_vou_querycap(struct file *file, void  *priv,
-			   struct v4l2_capability *cap)
-{
-	struct sh_vou_device *vou_dev = video_drvdata(file);
-
-	dev_dbg(vou_dev->v4l2_dev.dev, "%s()\n", __func__);
-
-	strscpy(cap->card, "SuperH VOU", sizeof(cap->card));
-	strscpy(cap->driver, "sh-vou", sizeof(cap->driver));
-	strscpy(cap->bus_info, "platform:sh-vou", sizeof(cap->bus_info));
-	return 0;
-}
-
-/* Enumerate formats, that the device can accept from the user */
-static int sh_vou_enum_fmt_vid_out(struct file *file, void  *priv,
-				   struct v4l2_fmtdesc *fmt)
-{
-	struct sh_vou_device *vou_dev = video_drvdata(file);
-
-	if (fmt->index >= ARRAY_SIZE(vou_fmt))
-		return -EINVAL;
-
-	dev_dbg(vou_dev->v4l2_dev.dev, "%s()\n", __func__);
-
-	fmt->pixelformat = vou_fmt[fmt->index].pfmt;
-
-	return 0;
-}
-
-static int sh_vou_g_fmt_vid_out(struct file *file, void *priv,
-				struct v4l2_format *fmt)
-{
-	struct sh_vou_device *vou_dev = video_drvdata(file);
-
-	dev_dbg(vou_dev->v4l2_dev.dev, "%s()\n", __func__);
-
-	fmt->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
-	fmt->fmt.pix = vou_dev->pix;
-
-	return 0;
-}
-
-static const unsigned char vou_scale_h_num[] = {1, 9, 2, 9, 4};
-static const unsigned char vou_scale_h_den[] = {1, 8, 1, 4, 1};
-static const unsigned char vou_scale_h_fld[] = {0, 2, 1, 3};
-static const unsigned char vou_scale_v_num[] = {1, 2, 4};
-static const unsigned char vou_scale_v_den[] = {1, 1, 1};
-static const unsigned char vou_scale_v_fld[] = {0, 1};
-
-static void sh_vou_configure_geometry(struct sh_vou_device *vou_dev,
-				      int pix_idx, int w_idx, int h_idx)
-{
-	struct sh_vou_fmt *fmt = vou_fmt + pix_idx;
-	unsigned int black_left, black_top, width_max,
-		frame_in_height, frame_out_height, frame_out_top;
-	struct v4l2_rect *rect = &vou_dev->rect;
-	struct v4l2_pix_format *pix = &vou_dev->pix;
-	u32 vouvcr = 0, dsr_h, dsr_v;
-
-	if (vou_dev->std & V4L2_STD_525_60) {
-		width_max = 858;
-		/* height_max = 262; */
-	} else {
-		width_max = 864;
-		/* height_max = 312; */
-	}
-
-	frame_in_height = pix->height / 2;
-	frame_out_height = rect->height / 2;
-	frame_out_top = rect->top / 2;
-
-	/*
-	 * Cropping scheme: max useful image is 720x480, and the total video
-	 * area is 858x525 (NTSC) or 864x625 (PAL). AK8813 / 8814 starts
-	 * sampling data beginning with fixed 276th (NTSC) / 288th (PAL) clock,
-	 * of which the first 33 / 25 clocks HSYNC must be held active. This
-	 * has to be configured in CR[HW]. 1 pixel equals 2 clock periods.
-	 * This gives CR[HW] = 16 / 12, VPR[HVP] = 138 / 144, which gives
-	 * exactly 858 - 138 = 864 - 144 = 720! We call the out-of-display area,
-	 * beyond DSR, specified on the left and top by the VPR register "black
-	 * pixels" and out-of-image area (DPR) "background pixels." We fix VPR
-	 * at 138 / 144 : 20, because that's the HSYNC timing, that our first
-	 * client requires, and that's exactly what leaves us 720 pixels for the
-	 * image; we leave VPR[VVP] at default 20 for now, because the client
-	 * doesn't seem to have any special requirements for it. Otherwise we
-	 * could also set it to max - 240 = 22 / 72. Thus VPR depends only on
-	 * the selected standard, and DPR and DSR are selected according to
-	 * cropping. Q: how does the client detect the first valid line? Does
-	 * HSYNC stay inactive during invalid (black) lines?
-	 */
-	black_left = width_max - VOU_MAX_IMAGE_WIDTH;
-	black_top = 20;
-
-	dsr_h = rect->width + rect->left;
-	dsr_v = frame_out_height + frame_out_top;
-
-	dev_dbg(vou_dev->v4l2_dev.dev,
-		"image %ux%u, black %u:%u, offset %u:%u, display %ux%u\n",
-		pix->width, frame_in_height, black_left, black_top,
-		rect->left, frame_out_top, dsr_h, dsr_v);
-
-	/* VOUISR height - half of a frame height in frame mode */
-	sh_vou_reg_ab_write(vou_dev, VOUISR, (pix->width << 16) | frame_in_height);
-	sh_vou_reg_ab_write(vou_dev, VOUVPR, (black_left << 16) | black_top);
-	sh_vou_reg_ab_write(vou_dev, VOUDPR, (rect->left << 16) | frame_out_top);
-	sh_vou_reg_ab_write(vou_dev, VOUDSR, (dsr_h << 16) | dsr_v);
-
-	/*
-	 * if necessary, we could set VOUHIR to
-	 * max(black_left + dsr_h, width_max) here
-	 */
-
-	if (w_idx)
-		vouvcr |= (1 << 15) | (vou_scale_h_fld[w_idx - 1] << 4);
-	if (h_idx)
-		vouvcr |= (1 << 14) | vou_scale_v_fld[h_idx - 1];
-
-	dev_dbg(vou_dev->v4l2_dev.dev, "0x%08x: scaling 0x%x\n",
-		fmt->pfmt, 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;
-	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 <g.liakhovetski@gmx.de>");
-MODULE_LICENSE("GPL v2");
-MODULE_VERSION("0.1.0");
-MODULE_ALIAS("platform:sh-vou");
-- 
2.39.0