[PATCH 19/22] fbdev: remove sh7760fb

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

Signed-off-by: Christoph Hellwig <hch@xxxxxx>
---
 drivers/video/fbdev/Kconfig    |  17 +-
 drivers/video/fbdev/Makefile   |   1 -
 drivers/video/fbdev/sh7760fb.c | 587 ---------------------------------
 3 files changed, 1 insertion(+), 604 deletions(-)
 delete mode 100644 drivers/video/fbdev/sh7760fb.c

diff --git a/drivers/video/fbdev/Kconfig b/drivers/video/fbdev/Kconfig
index b2bed599e6c6ea..cba0ba512a6ddb 100644
--- a/drivers/video/fbdev/Kconfig
+++ b/drivers/video/fbdev/Kconfig
@@ -1861,7 +1861,7 @@ config FB_W100
 config FB_SH_MOBILE_LCDC
 	tristate "SuperH Mobile LCDC framebuffer support"
 	depends on FB && HAVE_CLK && HAS_IOMEM
-	depends on SUPERH || ARCH_RENESAS || COMPILE_TEST
+	depends on ARCH_RENESAS || COMPILE_TEST
 	select FB_SYS_FILLRECT
 	select FB_SYS_COPYAREA
 	select FB_SYS_IMAGEBLIT
@@ -2048,21 +2048,6 @@ config FB_COBALT
 	tristate "Cobalt server LCD frame buffer support"
 	depends on FB && MIPS_COBALT
 
-config FB_SH7760
-	bool "SH7760/SH7763/SH7720/SH7721 LCDC support"
-	depends on FB && (CPU_SUBTYPE_SH7760 || CPU_SUBTYPE_SH7763 \
-		|| CPU_SUBTYPE_SH7720 || CPU_SUBTYPE_SH7721)
-	select FB_CFB_FILLRECT
-	select FB_CFB_COPYAREA
-	select FB_CFB_IMAGEBLIT
-	help
-	  Support for the SH7760/SH7763/SH7720/SH7721 integrated
-	  (D)STN/TFT LCD Controller.
-	  Supports display resolutions up to 1024x1024 pixel, grayscale and
-	  color operation, with depths ranging from 1 bpp to 8 bpp monochrome
-	  and 8, 15 or 16 bpp color; 90 degrees clockwise display rotation for
-	  panels <= 320 pixel horizontal resolution.
-
 config FB_DA8XX
 	tristate "DA8xx/OMAP-L1xx/AM335x Framebuffer support"
 	depends on FB && HAVE_CLK && HAS_IOMEM
diff --git a/drivers/video/fbdev/Makefile b/drivers/video/fbdev/Makefile
index 7795c4126706fd..9941a30522b4b3 100644
--- a/drivers/video/fbdev/Makefile
+++ b/drivers/video/fbdev/Makefile
@@ -97,7 +97,6 @@ obj-$(CONFIG_FB_MAXINE)		  += maxinefb.o
 obj-$(CONFIG_FB_METRONOME)        += metronomefb.o
 obj-$(CONFIG_FB_BROADSHEET)       += broadsheetfb.o
 obj-$(CONFIG_FB_S1D13XXX)	  += s1d13xxxfb.o
-obj-$(CONFIG_FB_SH7760)		  += sh7760fb.o
 obj-$(CONFIG_FB_IMX)              += imxfb.o
 obj-$(CONFIG_FB_S3C)		  += s3c-fb.o
 obj-$(CONFIG_FB_S3C2410)	  += s3c2410fb.o
diff --git a/drivers/video/fbdev/sh7760fb.c b/drivers/video/fbdev/sh7760fb.c
deleted file mode 100644
index 5978a892123226..00000000000000
--- a/drivers/video/fbdev/sh7760fb.c
+++ /dev/null
@@ -1,587 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- * SH7760/SH7763 LCDC Framebuffer driver.
- *
- * (c) 2006-2008 MSC Vertriebsges.m.b.H.,
- *             Manuel Lauss <mano@xxxxxxxxxxxxxxxxxxxxxxx>
- * (c) 2008 Nobuhiro Iwamatsu <iwamatsu.nobuhiro@xxxxxxxxxxx>
- *
- * PLEASE HAVE A LOOK AT Documentation/fb/sh7760fb.rst!
- *
- * Thanks to Siegfried Schaefer <s.schaefer at schaefer-edv.de>
- *     for his original source and testing!
- *
- * sh7760_setcolreg get from drivers/video/sh_mobile_lcdcfb.c
- */
-
-#include <linux/completion.h>
-#include <linux/delay.h>
-#include <linux/dma-mapping.h>
-#include <linux/fb.h>
-#include <linux/interrupt.h>
-#include <linux/io.h>
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/platform_device.h>
-#include <linux/slab.h>
-
-#include <asm/sh7760fb.h>
-
-struct sh7760fb_par {
-	void __iomem *base;
-	int irq;
-
-	struct sh7760fb_platdata *pd;	/* display information */
-
-	dma_addr_t fbdma;	/* physical address */
-
-	int rot;		/* rotation enabled? */
-
-	u32 pseudo_palette[16];
-
-	struct platform_device *dev;
-	struct resource *ioarea;
-	struct completion vsync;	/* vsync irq event */
-};
-
-static irqreturn_t sh7760fb_irq(int irq, void *data)
-{
-	struct completion *c = data;
-
-	complete(c);
-
-	return IRQ_HANDLED;
-}
-
-/* wait_for_lps - wait until power supply has reached a certain state. */
-static int wait_for_lps(struct sh7760fb_par *par, int val)
-{
-	int i = 100;
-	while (--i && ((ioread16(par->base + LDPMMR) & 3) != val))
-		msleep(1);
-
-	if (i <= 0)
-		return -ETIMEDOUT;
-
-	return 0;
-}
-
-/* en/disable the LCDC */
-static int sh7760fb_blank(int blank, struct fb_info *info)
-{
-	struct sh7760fb_par *par = info->par;
-	struct sh7760fb_platdata *pd = par->pd;
-	unsigned short cntr = ioread16(par->base + LDCNTR);
-	unsigned short intr = ioread16(par->base + LDINTR);
-	int lps;
-
-	if (blank == FB_BLANK_UNBLANK) {
-		intr |= VINT_START;
-		cntr = LDCNTR_DON2 | LDCNTR_DON;
-		lps = 3;
-	} else {
-		intr &= ~VINT_START;
-		cntr = LDCNTR_DON2;
-		lps = 0;
-	}
-
-	if (pd->blank)
-		pd->blank(blank);
-
-	iowrite16(intr, par->base + LDINTR);
-	iowrite16(cntr, par->base + LDCNTR);
-
-	return wait_for_lps(par, lps);
-}
-
-static int sh7760_setcolreg (u_int regno,
-	u_int red, u_int green, u_int blue,
-	u_int transp, struct fb_info *info)
-{
-	u32 *palette = info->pseudo_palette;
-
-	if (regno >= 16)
-		return -EINVAL;
-
-	/* only FB_VISUAL_TRUECOLOR supported */
-
-	red >>= 16 - info->var.red.length;
-	green >>= 16 - info->var.green.length;
-	blue >>= 16 - info->var.blue.length;
-	transp >>= 16 - info->var.transp.length;
-
-	palette[regno] = (red << info->var.red.offset) |
-		(green << info->var.green.offset) |
-		(blue << info->var.blue.offset) |
-		(transp << info->var.transp.offset);
-
-	return 0;
-}
-
-static int sh7760fb_get_color_info(struct device *dev,
-				   u16 lddfr, int *bpp, int *gray)
-{
-	int lbpp, lgray;
-
-	lgray = lbpp = 0;
-
-	switch (lddfr & LDDFR_COLOR_MASK) {
-	case LDDFR_1BPP_MONO:
-		lgray = 1;
-		lbpp = 1;
-		break;
-	case LDDFR_2BPP_MONO:
-		lgray = 1;
-		lbpp = 2;
-		break;
-	case LDDFR_4BPP_MONO:
-		lgray = 1;
-	case LDDFR_4BPP:
-		lbpp = 4;
-		break;
-	case LDDFR_6BPP_MONO:
-		lgray = 1;
-	case LDDFR_8BPP:
-		lbpp = 8;
-		break;
-	case LDDFR_16BPP_RGB555:
-	case LDDFR_16BPP_RGB565:
-		lbpp = 16;
-		lgray = 0;
-		break;
-	default:
-		dev_dbg(dev, "unsupported LDDFR bit depth.\n");
-		return -EINVAL;
-	}
-
-	if (bpp)
-		*bpp = lbpp;
-	if (gray)
-		*gray = lgray;
-
-	return 0;
-}
-
-static int sh7760fb_check_var(struct fb_var_screeninfo *var,
-			      struct fb_info *info)
-{
-	struct fb_fix_screeninfo *fix = &info->fix;
-	struct sh7760fb_par *par = info->par;
-	int ret, bpp;
-
-	/* get color info from register value */
-	ret = sh7760fb_get_color_info(info->dev, par->pd->lddfr, &bpp, NULL);
-	if (ret)
-		return ret;
-
-	var->bits_per_pixel = bpp;
-
-	if ((var->grayscale) && (var->bits_per_pixel == 1))
-		fix->visual = FB_VISUAL_MONO10;
-	else if (var->bits_per_pixel >= 15)
-		fix->visual = FB_VISUAL_TRUECOLOR;
-	else
-		fix->visual = FB_VISUAL_PSEUDOCOLOR;
-
-	/* TODO: add some more validation here */
-	return 0;
-}
-
-/*
- * sh7760fb_set_par - set videomode.
- *
- * NOTE: The rotation, grayscale and DSTN codepaths are
- *     totally untested!
- */
-static int sh7760fb_set_par(struct fb_info *info)
-{
-	struct sh7760fb_par *par = info->par;
-	struct fb_videomode *vm = par->pd->def_mode;
-	unsigned long sbase, dstn_off, ldsarl, stride;
-	unsigned short hsynp, hsynw, htcn, hdcn;
-	unsigned short vsynp, vsynw, vtln, vdln;
-	unsigned short lddfr, ldmtr;
-	int ret, bpp, gray;
-
-	par->rot = par->pd->rotate;
-
-	/* rotate only works with xres <= 320 */
-	if (par->rot && (vm->xres > 320)) {
-		dev_dbg(info->dev, "rotation disabled due to display size\n");
-		par->rot = 0;
-	}
-
-	/* calculate LCDC reg vals from display parameters */
-	hsynp = vm->right_margin + vm->xres;
-	hsynw = vm->hsync_len;
-	htcn = vm->left_margin + hsynp + hsynw;
-	hdcn = vm->xres;
-	vsynp = vm->lower_margin + vm->yres;
-	vsynw = vm->vsync_len;
-	vtln = vm->upper_margin + vsynp + vsynw;
-	vdln = vm->yres;
-
-	/* get color info from register value */
-	ret = sh7760fb_get_color_info(info->dev, par->pd->lddfr, &bpp, &gray);
-	if (ret)
-		return ret;
-
-	dev_dbg(info->dev, "%dx%d %dbpp %s (orientation %s)\n", hdcn,
-		vdln, bpp, gray ? "grayscale" : "color",
-		par->rot ? "rotated" : "normal");
-
-#ifdef CONFIG_CPU_LITTLE_ENDIAN
-	lddfr = par->pd->lddfr | (1 << 8);
-#else
-	lddfr = par->pd->lddfr & ~(1 << 8);
-#endif
-
-	ldmtr = par->pd->ldmtr;
-
-	if (!(vm->sync & FB_SYNC_HOR_HIGH_ACT))
-		ldmtr |= LDMTR_CL1POL;
-	if (!(vm->sync & FB_SYNC_VERT_HIGH_ACT))
-		ldmtr |= LDMTR_FLMPOL;
-
-	/* shut down LCDC before changing display parameters */
-	sh7760fb_blank(FB_BLANK_POWERDOWN, info);
-
-	iowrite16(par->pd->ldickr, par->base + LDICKR);	/* pixclock */
-	iowrite16(ldmtr, par->base + LDMTR);	/* polarities */
-	iowrite16(lddfr, par->base + LDDFR);	/* color/depth */
-	iowrite16((par->rot ? 1 << 13 : 0), par->base + LDSMR);	/* rotate */
-	iowrite16(par->pd->ldpmmr, par->base + LDPMMR);	/* Power Management */
-	iowrite16(par->pd->ldpspr, par->base + LDPSPR);	/* Power Supply Ctrl */
-
-	/* display resolution */
-	iowrite16(((htcn >> 3) - 1) | (((hdcn >> 3) - 1) << 8),
-		  par->base + LDHCNR);
-	iowrite16(vdln - 1, par->base + LDVDLNR);
-	iowrite16(vtln - 1, par->base + LDVTLNR);
-	/* h/v sync signals */
-	iowrite16((vsynp - 1) | ((vsynw - 1) << 12), par->base + LDVSYNR);
-	iowrite16(((hsynp >> 3) - 1) | (((hsynw >> 3) - 1) << 12),
-		  par->base + LDHSYNR);
-	/* AC modulation sig */
-	iowrite16(par->pd->ldaclnr, par->base + LDACLNR);
-
-	stride = (par->rot) ? vtln : hdcn;
-	if (!gray)
-		stride *= (bpp + 7) >> 3;
-	else {
-		if (bpp == 1)
-			stride >>= 3;
-		else if (bpp == 2)
-			stride >>= 2;
-		else if (bpp == 4)
-			stride >>= 1;
-		/* 6 bpp == 8 bpp */
-	}
-
-	/* if rotated, stride must be power of 2 */
-	if (par->rot) {
-		unsigned long bit = 1 << 31;
-		while (bit) {
-			if (stride & bit)
-				break;
-			bit >>= 1;
-		}
-		if (stride & ~bit)
-			stride = bit << 1;	/* not P-o-2, round up */
-	}
-	iowrite16(stride, par->base + LDLAOR);
-
-	/* set display mem start address */
-	sbase = (unsigned long)par->fbdma;
-	if (par->rot)
-		sbase += (hdcn - 1) * stride;
-
-	iowrite32(sbase, par->base + LDSARU);
-
-	/*
-	 * for DSTN need to set address for lower half.
-	 * I (mlau) don't know which address to set it to,
-	 * so I guessed at (stride * yres/2).
-	 */
-	if (((ldmtr & 0x003f) >= LDMTR_DSTN_MONO_8) &&
-	    ((ldmtr & 0x003f) <= LDMTR_DSTN_COLOR_16)) {
-
-		dev_dbg(info->dev, " ***** DSTN untested! *****\n");
-
-		dstn_off = stride;
-		if (par->rot)
-			dstn_off *= hdcn >> 1;
-		else
-			dstn_off *= vdln >> 1;
-
-		ldsarl = sbase + dstn_off;
-	} else
-		ldsarl = 0;
-
-	iowrite32(ldsarl, par->base + LDSARL);	/* mem for lower half of DSTN */
-
-	info->fix.line_length = stride;
-
-	sh7760fb_check_var(&info->var, info);
-
-	sh7760fb_blank(FB_BLANK_UNBLANK, info);	/* panel on! */
-
-	dev_dbg(info->dev, "hdcn  : %6d htcn  : %6d\n", hdcn, htcn);
-	dev_dbg(info->dev, "hsynw : %6d hsynp : %6d\n", hsynw, hsynp);
-	dev_dbg(info->dev, "vdln  : %6d vtln  : %6d\n", vdln, vtln);
-	dev_dbg(info->dev, "vsynw : %6d vsynp : %6d\n", vsynw, vsynp);
-	dev_dbg(info->dev, "clksrc: %6d clkdiv: %6d\n",
-		(par->pd->ldickr >> 12) & 3, par->pd->ldickr & 0x1f);
-	dev_dbg(info->dev, "ldpmmr: 0x%04x ldpspr: 0x%04x\n", par->pd->ldpmmr,
-		par->pd->ldpspr);
-	dev_dbg(info->dev, "ldmtr : 0x%04x lddfr : 0x%04x\n", ldmtr, lddfr);
-	dev_dbg(info->dev, "ldlaor: %ld\n", stride);
-	dev_dbg(info->dev, "ldsaru: 0x%08lx ldsarl: 0x%08lx\n", sbase, ldsarl);
-
-	return 0;
-}
-
-static const struct fb_ops sh7760fb_ops = {
-	.owner = THIS_MODULE,
-	.fb_blank = sh7760fb_blank,
-	.fb_check_var = sh7760fb_check_var,
-	.fb_setcolreg = sh7760_setcolreg,
-	.fb_set_par = sh7760fb_set_par,
-	.fb_fillrect = cfb_fillrect,
-	.fb_copyarea = cfb_copyarea,
-	.fb_imageblit = cfb_imageblit,
-};
-
-static void sh7760fb_free_mem(struct fb_info *info)
-{
-	struct sh7760fb_par *par = info->par;
-
-	if (!info->screen_base)
-		return;
-
-	dma_free_coherent(info->dev, info->screen_size,
-			  info->screen_base, par->fbdma);
-
-	par->fbdma = 0;
-	info->screen_base = NULL;
-	info->screen_size = 0;
-}
-
-/* allocate the framebuffer memory. This memory must be in Area3,
- * (dictated by the DMA engine) and contiguous, at a 512 byte boundary.
- */
-static int sh7760fb_alloc_mem(struct fb_info *info)
-{
-	struct sh7760fb_par *par = info->par;
-	void *fbmem;
-	unsigned long vram;
-	int ret, bpp;
-
-	if (info->screen_base)
-		return 0;
-
-	/* get color info from register value */
-	ret = sh7760fb_get_color_info(info->dev, par->pd->lddfr, &bpp, NULL);
-	if (ret) {
-		printk(KERN_ERR "colinfo\n");
-		return ret;
-	}
-
-	/* min VRAM: xres_min = 16, yres_min = 1, bpp = 1: 2byte -> 1 page
-	   max VRAM: xres_max = 1024, yres_max = 1024, bpp = 16: 2MB */
-
-	vram = info->var.xres * info->var.yres;
-	if (info->var.grayscale) {
-		if (bpp == 1)
-			vram >>= 3;
-		else if (bpp == 2)
-			vram >>= 2;
-		else if (bpp == 4)
-			vram >>= 1;
-	} else if (bpp > 8)
-		vram *= 2;
-	if ((vram < 1) || (vram > 1024 * 2048)) {
-		dev_dbg(info->dev, "too much VRAM required. Check settings\n");
-		return -ENODEV;
-	}
-
-	if (vram < PAGE_SIZE)
-		vram = PAGE_SIZE;
-
-	fbmem = dma_alloc_coherent(info->dev, vram, &par->fbdma, GFP_KERNEL);
-
-	if (!fbmem)
-		return -ENOMEM;
-
-	if ((par->fbdma & SH7760FB_DMA_MASK) != SH7760FB_DMA_MASK) {
-		sh7760fb_free_mem(info);
-		dev_err(info->dev, "kernel gave me memory at 0x%08lx, which is"
-			"unusable for the LCDC\n", (unsigned long)par->fbdma);
-		return -ENOMEM;
-	}
-
-	info->screen_base = fbmem;
-	info->screen_size = vram;
-	info->fix.smem_start = (unsigned long)info->screen_base;
-	info->fix.smem_len = info->screen_size;
-
-	return 0;
-}
-
-static int sh7760fb_probe(struct platform_device *pdev)
-{
-	struct fb_info *info;
-	struct resource *res;
-	struct sh7760fb_par *par;
-	int ret;
-
-	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	if (unlikely(res == NULL)) {
-		dev_err(&pdev->dev, "invalid resource\n");
-		return -EINVAL;
-	}
-
-	info = framebuffer_alloc(sizeof(struct sh7760fb_par), &pdev->dev);
-	if (!info)
-		return -ENOMEM;
-
-	par = info->par;
-	par->dev = pdev;
-
-	par->pd = pdev->dev.platform_data;
-	if (!par->pd) {
-		dev_dbg(info->dev, "no display setup data!\n");
-		ret = -ENODEV;
-		goto out_fb;
-	}
-
-	par->ioarea = request_mem_region(res->start,
-					 resource_size(res), pdev->name);
-	if (!par->ioarea) {
-		dev_err(&pdev->dev, "mmio area busy\n");
-		ret = -EBUSY;
-		goto out_fb;
-	}
-
-	par->base = ioremap(res->start, resource_size(res));
-	if (!par->base) {
-		dev_err(&pdev->dev, "cannot remap\n");
-		ret = -ENODEV;
-		goto out_res;
-	}
-
-	iowrite16(0, par->base + LDINTR);	/* disable vsync irq */
-	par->irq = platform_get_irq(pdev, 0);
-	if (par->irq >= 0) {
-		ret = request_irq(par->irq, sh7760fb_irq, 0,
-				  "sh7760-lcdc", &par->vsync);
-		if (ret) {
-			dev_err(&pdev->dev, "cannot grab IRQ\n");
-			par->irq = -ENXIO;
-		} else
-			disable_irq_nosync(par->irq);
-	}
-
-	fb_videomode_to_var(&info->var, par->pd->def_mode);
-
-	ret = sh7760fb_alloc_mem(info);
-	if (ret) {
-		dev_dbg(info->dev, "framebuffer memory allocation failed!\n");
-		goto out_unmap;
-	}
-
-	info->pseudo_palette = par->pseudo_palette;
-
-	/* fixup color register bitpositions. These are fixed by hardware */
-	info->var.red.offset = 11;
-	info->var.red.length = 5;
-	info->var.red.msb_right = 0;
-
-	info->var.green.offset = 5;
-	info->var.green.length = 6;
-	info->var.green.msb_right = 0;
-
-	info->var.blue.offset = 0;
-	info->var.blue.length = 5;
-	info->var.blue.msb_right = 0;
-
-	info->var.transp.offset = 0;
-	info->var.transp.length = 0;
-	info->var.transp.msb_right = 0;
-
-	strcpy(info->fix.id, "sh7760-lcdc");
-
-	/* set the DON2 bit now, before cmap allocation, as it will randomize
-	 * palette memory.
-	 */
-	iowrite16(LDCNTR_DON2, par->base + LDCNTR);
-	info->fbops = &sh7760fb_ops;
-
-	ret = fb_alloc_cmap(&info->cmap, 256, 0);
-	if (ret) {
-		dev_dbg(info->dev, "Unable to allocate cmap memory\n");
-		goto out_mem;
-	}
-
-	ret = register_framebuffer(info);
-	if (ret < 0) {
-		dev_dbg(info->dev, "cannot register fb!\n");
-		goto out_cmap;
-	}
-	platform_set_drvdata(pdev, info);
-
-	printk(KERN_INFO "%s: memory at phys 0x%08lx-0x%08lx, size %ld KiB\n",
-	       pdev->name,
-	       (unsigned long)par->fbdma,
-	       (unsigned long)(par->fbdma + info->screen_size - 1),
-	       info->screen_size >> 10);
-
-	return 0;
-
-out_cmap:
-	sh7760fb_blank(FB_BLANK_POWERDOWN, info);
-	fb_dealloc_cmap(&info->cmap);
-out_mem:
-	sh7760fb_free_mem(info);
-out_unmap:
-	if (par->irq >= 0)
-		free_irq(par->irq, &par->vsync);
-	iounmap(par->base);
-out_res:
-	release_mem_region(res->start, resource_size(res));
-out_fb:
-	framebuffer_release(info);
-	return ret;
-}
-
-static int sh7760fb_remove(struct platform_device *dev)
-{
-	struct fb_info *info = platform_get_drvdata(dev);
-	struct sh7760fb_par *par = info->par;
-
-	sh7760fb_blank(FB_BLANK_POWERDOWN, info);
-	unregister_framebuffer(info);
-	fb_dealloc_cmap(&info->cmap);
-	sh7760fb_free_mem(info);
-	if (par->irq >= 0)
-		free_irq(par->irq, &par->vsync);
-	iounmap(par->base);
-	release_mem_region(par->ioarea->start, resource_size(par->ioarea));
-	framebuffer_release(info);
-
-	return 0;
-}
-
-static struct platform_driver sh7760_lcdc_driver = {
-	.driver = {
-		   .name = "sh7760-lcdc",
-		   },
-	.probe = sh7760fb_probe,
-	.remove = sh7760fb_remove,
-};
-
-module_platform_driver(sh7760_lcdc_driver);
-
-MODULE_AUTHOR("Nobuhiro Iwamatsu, Manuel Lauss");
-MODULE_DESCRIPTION("FBdev for SH7760/63 integrated LCD Controller");
-MODULE_LICENSE("GPL v2");
-- 
2.39.0




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