[PATCH 19/22] fbdev: remove sh7760fb

Christoph Hellwig
2023-01-13T06:30:33Z

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

Signed-off-by: Christoph Hellwig <hch@lst.de>
---
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@roarinelk.homelinux.net>
- * (c) 2008 Nobuhiro Iwamatsu <iwamatsu.nobuhiro@renesas.com>
- *
- * 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