[PATCH v2 28/28] fbdev/p9100: Drop now unused driver p9100

From: Sam Ravnborg via B4 Relay
Date: Sat Mar 09 2024 - 13:23:44 EST

From: Sam Ravnborg <sam@xxxxxxxxxxxx>

The p9100 driver is only relevant for the Sparcbook 3 machine,
and with sun4m support removed this driver is no longer relevant.

Signed-off-by: Sam Ravnborg <sam@xxxxxxxxxxxx>
Acked-by: Arnd Bergmann <arnd@xxxxxxxxxx>
Acked-by: Thomas Zimmermann <tzimmermann@xxxxxxx>
Cc: "David S. Miller" <davem@xxxxxxxxxxxxx>
Cc: Arnd Bergmann <arnd@xxxxxxxxxx>
Cc: Andreas Larsson <andreas@xxxxxxxxxxx>
Cc: Helge Deller <deller@xxxxxx>
---
drivers/video/fbdev/Kconfig | 8 -
drivers/video/fbdev/Makefile | 1 -
drivers/video/fbdev/p9100.c | 372 -------------------------------------------
3 files changed, 381 deletions(-)

diff --git a/drivers/video/fbdev/Kconfig b/drivers/video/fbdev/Kconfig
index a74f7fd3ba0c..9f1d365ed040 100644
--- a/drivers/video/fbdev/Kconfig
+++ b/drivers/video/fbdev/Kconfig
@@ -550,14 +550,6 @@ config FB_CG14
This is the frame buffer device driver for the CGfourteen frame
buffer on Desktop SPARCsystems with the SX graphics option.

-config FB_P9100
- bool "P9100 (Sparcbook 3 only) support"
- depends on FB_SBUS
- select FB_SBUS_HELPERS
- help
- This is the frame buffer device driver for the P9100 card
- supported on Sparcbook 3 machines.
-
config FB_LEO
bool "Leo (ZX) support"
depends on FB_SBUS
diff --git a/drivers/video/fbdev/Makefile b/drivers/video/fbdev/Makefile
index 3eecd51267fa..3f4ac048d355 100644
--- a/drivers/video/fbdev/Makefile
+++ b/drivers/video/fbdev/Makefile
@@ -50,7 +50,6 @@ obj-$(CONFIG_FB_CG6) += cg6.o
obj-$(CONFIG_FB_CG3) += cg3.o
obj-$(CONFIG_FB_BW2) += bw2.o
obj-$(CONFIG_FB_CG14) += cg14.o
-obj-$(CONFIG_FB_P9100) += p9100.o
obj-$(CONFIG_FB_TCX) += tcx.o
obj-$(CONFIG_FB_LEO) += leo.o
obj-$(CONFIG_FB_ACORN) += acornfb.o
diff --git a/drivers/video/fbdev/p9100.c b/drivers/video/fbdev/p9100.c
deleted file mode 100644
index e1356f8a866e..000000000000
--- a/drivers/video/fbdev/p9100.c
+++ /dev/null
@@ -1,372 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-only
-/* p9100.c: P9100 frame buffer driver
- *
- * Copyright (C) 2003, 2006 David S. Miller (davem@xxxxxxxxxxxxx)
- * Copyright 1999 Derrick J Brashear (shadow@xxxxxxxxxxxx)
- *
- * Driver layout based loosely on tgafb.c, see that file for credits.
- */
-
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/errno.h>
-#include <linux/string.h>
-#include <linux/delay.h>
-#include <linux/init.h>
-#include <linux/fb.h>
-#include <linux/mm.h>
-#include <linux/of.h>
-#include <linux/platform_device.h>
-
-#include <asm/io.h>
-#include <asm/fbio.h>
-
-#include "sbuslib.h"
-
-/*
- * Local functions.
- */
-
-static int p9100_setcolreg(unsigned, unsigned, unsigned, unsigned,
- unsigned, struct fb_info *);
-static int p9100_blank(int, struct fb_info *);
-
-static int p9100_sbusfb_mmap(struct fb_info *info, struct vm_area_struct *vma);
-static int p9100_sbusfb_ioctl(struct fb_info *info, unsigned int cmd, unsigned long arg);
-
-/*
- * Frame buffer operations
- */
-
-static const struct fb_ops p9100_ops = {
- .owner = THIS_MODULE,
- FB_DEFAULT_SBUS_OPS(p9100),
- .fb_setcolreg = p9100_setcolreg,
- .fb_blank = p9100_blank,
-};
-
-/* P9100 control registers */
-#define P9100_SYSCTL_OFF 0x0UL
-#define P9100_VIDEOCTL_OFF 0x100UL
-#define P9100_VRAMCTL_OFF 0x180UL
-#define P9100_RAMDAC_OFF 0x200UL
-#define P9100_VIDEOCOPROC_OFF 0x400UL
-
-/* P9100 command registers */
-#define P9100_CMD_OFF 0x0UL
-
-/* P9100 framebuffer memory */
-#define P9100_FB_OFF 0x0UL
-
-/* 3 bits: 2=8bpp 3=16bpp 5=32bpp 7=24bpp */
-#define SYS_CONFIG_PIXELSIZE_SHIFT 26
-
-#define SCREENPAINT_TIMECTL1_ENABLE_VIDEO 0x20 /* 0 = off, 1 = on */
-
-struct p9100_regs {
- /* Registers for the system control */
- u32 sys_base;
- u32 sys_config;
- u32 sys_intr;
- u32 sys_int_ena;
- u32 sys_alt_rd;
- u32 sys_alt_wr;
- u32 sys_xxx[58];
-
- /* Registers for the video control */
- u32 vid_base;
- u32 vid_hcnt;
- u32 vid_htotal;
- u32 vid_hsync_rise;
- u32 vid_hblank_rise;
- u32 vid_hblank_fall;
- u32 vid_hcnt_preload;
- u32 vid_vcnt;
- u32 vid_vlen;
- u32 vid_vsync_rise;
- u32 vid_vblank_rise;
- u32 vid_vblank_fall;
- u32 vid_vcnt_preload;
- u32 vid_screenpaint_addr;
- u32 vid_screenpaint_timectl1;
- u32 vid_screenpaint_qsfcnt;
- u32 vid_screenpaint_timectl2;
- u32 vid_xxx[15];
-
- /* Registers for the video control */
- u32 vram_base;
- u32 vram_memcfg;
- u32 vram_refresh_pd;
- u32 vram_refresh_cnt;
- u32 vram_raslo_max;
- u32 vram_raslo_cur;
- u32 pwrup_cfg;
- u32 vram_xxx[25];
-
- /* Registers for IBM RGB528 Palette */
- u32 ramdac_cmap_wridx;
- u32 ramdac_palette_data;
- u32 ramdac_pixel_mask;
- u32 ramdac_palette_rdaddr;
- u32 ramdac_idx_lo;
- u32 ramdac_idx_hi;
- u32 ramdac_idx_data;
- u32 ramdac_idx_ctl;
- u32 ramdac_xxx[1784];
-};
-
-struct p9100_cmd_parameng {
- u32 parameng_status;
- u32 parameng_bltcmd;
- u32 parameng_quadcmd;
-};
-
-struct p9100_par {
- spinlock_t lock;
- struct p9100_regs __iomem *regs;
-
- u32 flags;
-#define P9100_FLAG_BLANKED 0x00000001
-
- unsigned long which_io;
-};
-
-/**
- * p9100_setcolreg - Optional function. Sets a color register.
- * @regno: boolean, 0 copy local, 1 get_user() function
- * @red: frame buffer colormap structure
- * @green: The green value which can be up to 16 bits wide
- * @blue: The blue value which can be up to 16 bits wide.
- * @transp: If supported the alpha value which can be up to 16 bits wide.
- * @info: frame buffer info structure
- */
-static int p9100_setcolreg(unsigned regno,
- unsigned red, unsigned green, unsigned blue,
- unsigned transp, struct fb_info *info)
-{
- struct p9100_par *par = (struct p9100_par *) info->par;
- struct p9100_regs __iomem *regs = par->regs;
- unsigned long flags;
-
- if (regno >= 256)
- return 1;
-
- red >>= 8;
- green >>= 8;
- blue >>= 8;
-
- spin_lock_irqsave(&par->lock, flags);
-
- sbus_writel((regno << 16), &regs->ramdac_cmap_wridx);
- sbus_writel((red << 16), &regs->ramdac_palette_data);
- sbus_writel((green << 16), &regs->ramdac_palette_data);
- sbus_writel((blue << 16), &regs->ramdac_palette_data);
-
- spin_unlock_irqrestore(&par->lock, flags);
-
- return 0;
-}
-
-/**
- * p9100_blank - Optional function. Blanks the display.
- * @blank: the blank mode we want.
- * @info: frame buffer structure that represents a single frame buffer
- */
-static int
-p9100_blank(int blank, struct fb_info *info)
-{
- struct p9100_par *par = (struct p9100_par *) info->par;
- struct p9100_regs __iomem *regs = par->regs;
- unsigned long flags;
- u32 val;
-
- spin_lock_irqsave(&par->lock, flags);
-
- switch (blank) {
- case FB_BLANK_UNBLANK: /* Unblanking */
- val = sbus_readl(&regs->vid_screenpaint_timectl1);
- val |= SCREENPAINT_TIMECTL1_ENABLE_VIDEO;
- sbus_writel(val, &regs->vid_screenpaint_timectl1);
- par->flags &= ~P9100_FLAG_BLANKED;
- break;
-
- case FB_BLANK_NORMAL: /* Normal blanking */
- case FB_BLANK_VSYNC_SUSPEND: /* VESA blank (vsync off) */
- case FB_BLANK_HSYNC_SUSPEND: /* VESA blank (hsync off) */
- case FB_BLANK_POWERDOWN: /* Poweroff */
- val = sbus_readl(&regs->vid_screenpaint_timectl1);
- val &= ~SCREENPAINT_TIMECTL1_ENABLE_VIDEO;
- sbus_writel(val, &regs->vid_screenpaint_timectl1);
- par->flags |= P9100_FLAG_BLANKED;
- break;
- }
-
- spin_unlock_irqrestore(&par->lock, flags);
-
- return 0;
-}
-
-static struct sbus_mmap_map p9100_mmap_map[] = {
- { CG3_MMAP_OFFSET, 0, SBUS_MMAP_FBSIZE(1) },
- { 0, 0, 0 }
-};
-
-static int p9100_sbusfb_mmap(struct fb_info *info, struct vm_area_struct *vma)
-{
- struct p9100_par *par = (struct p9100_par *)info->par;
-
- return sbusfb_mmap_helper(p9100_mmap_map,
- info->fix.smem_start, info->fix.smem_len,
- par->which_io, vma);
-}
-
-static int p9100_sbusfb_ioctl(struct fb_info *info, unsigned int cmd, unsigned long arg)
-{
- /* Make it look like a cg3. */
- return sbusfb_ioctl_helper(cmd, arg, info,
- FBTYPE_SUN3COLOR, 8, info->fix.smem_len);
-}
-
-/*
- * Initialisation
- */
-
-static void p9100_init_fix(struct fb_info *info, int linebytes, struct device_node *dp)
-{
- snprintf(info->fix.id, sizeof(info->fix.id), "%pOFn", dp);
-
- info->fix.type = FB_TYPE_PACKED_PIXELS;
- info->fix.visual = FB_VISUAL_PSEUDOCOLOR;
-
- info->fix.line_length = linebytes;
-
- info->fix.accel = FB_ACCEL_SUN_CGTHREE;
-}
-
-static int p9100_probe(struct platform_device *op)
-{
- struct device_node *dp = op->dev.of_node;
- struct fb_info *info;
- struct p9100_par *par;
- int linebytes, err;
-
- info = framebuffer_alloc(sizeof(struct p9100_par), &op->dev);
-
- err = -ENOMEM;
- if (!info)
- goto out_err;
- par = info->par;
-
- spin_lock_init(&par->lock);
-
- /* This is the framebuffer and the only resource apps can mmap. */
- info->fix.smem_start = op->resource[2].start;
- par->which_io = op->resource[2].flags & IORESOURCE_BITS;
-
- sbusfb_fill_var(&info->var, dp, 8);
- info->var.red.length = 8;
- info->var.green.length = 8;
- info->var.blue.length = 8;
-
- linebytes = of_getintprop_default(dp, "linebytes", info->var.xres);
- info->fix.smem_len = PAGE_ALIGN(linebytes * info->var.yres);
-
- par->regs = of_ioremap(&op->resource[0], 0,
- sizeof(struct p9100_regs), "p9100 regs");
- if (!par->regs)
- goto out_release_fb;
-
- info->fbops = &p9100_ops;
- info->screen_base = of_ioremap(&op->resource[2], 0,
- info->fix.smem_len, "p9100 ram");
- if (!info->screen_base)
- goto out_unmap_regs;
-
- p9100_blank(FB_BLANK_UNBLANK, info);
-
- if (fb_alloc_cmap(&info->cmap, 256, 0))
- goto out_unmap_screen;
-
- p9100_init_fix(info, linebytes, dp);
-
- err = register_framebuffer(info);
- if (err < 0)
- goto out_dealloc_cmap;
-
- fb_set_cmap(&info->cmap, info);
-
- dev_set_drvdata(&op->dev, info);
-
- printk(KERN_INFO "%pOF: p9100 at %lx:%lx\n",
- dp,
- par->which_io, info->fix.smem_start);
-
- return 0;
-
-out_dealloc_cmap:
- fb_dealloc_cmap(&info->cmap);
-
-out_unmap_screen:
- of_iounmap(&op->resource[2], info->screen_base, info->fix.smem_len);
-
-out_unmap_regs:
- of_iounmap(&op->resource[0], par->regs, sizeof(struct p9100_regs));
-
-out_release_fb:
- framebuffer_release(info);
-
-out_err:
- return err;
-}
-
-static void p9100_remove(struct platform_device *op)
-{
- struct fb_info *info = dev_get_drvdata(&op->dev);
- struct p9100_par *par = info->par;
-
- unregister_framebuffer(info);
- fb_dealloc_cmap(&info->cmap);
-
- of_iounmap(&op->resource[0], par->regs, sizeof(struct p9100_regs));
- of_iounmap(&op->resource[2], info->screen_base, info->fix.smem_len);
-
- framebuffer_release(info);
-}
-
-static const struct of_device_id p9100_match[] = {
- {
- .name = "p9100",
- },
- {},
-};
-MODULE_DEVICE_TABLE(of, p9100_match);
-
-static struct platform_driver p9100_driver = {
- .driver = {
- .name = "p9100",
- .of_match_table = p9100_match,
- },
- .probe = p9100_probe,
- .remove_new = p9100_remove,
-};
-
-static int __init p9100_init(void)
-{
- if (fb_get_options("p9100fb", NULL))
- return -ENODEV;
-
- return platform_driver_register(&p9100_driver);
-}
-
-static void __exit p9100_exit(void)
-{
- platform_driver_unregister(&p9100_driver);
-}
-
-module_init(p9100_init);
-module_exit(p9100_exit);
-
-MODULE_DESCRIPTION("framebuffer driver for P9100 chipsets");
-MODULE_AUTHOR("David S. Miller <davem@xxxxxxxxxxxxx>");
-MODULE_VERSION("2.0");
-MODULE_LICENSE("GPL");

--
2.34.1