| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| David S. Miller | 1595 | 58.04% | 10 | 26.32% |
| Linus Torvalds (pre-git) | 837 | 30.46% | 2 | 5.26% |
| Art Haas | 138 | 5.02% | 1 | 2.63% |
| Bob Breuer | 63 | 2.29% | 2 | 5.26% |
| Krzysztof Helt | 36 | 1.31% | 1 | 2.63% |
| Christoph Hellwig | 15 | 0.55% | 2 | 5.26% |
| Grant C. Likely | 12 | 0.44% | 3 | 7.89% |
| Linus Torvalds | 9 | 0.33% | 1 | 2.63% |
| Al Viro | 9 | 0.33% | 2 | 5.26% |
| Robert Reif | 8 | 0.29% | 4 | 10.53% |
| Rob Herring | 8 | 0.29% | 3 | 7.89% |
| Axel Lin | 5 | 0.18% | 1 | 2.63% |
| Julia Lawall | 4 | 0.15% | 1 | 2.63% |
| Anatolij Gustschin | 3 | 0.11% | 1 | 2.63% |
| Antonino A. Daplas | 3 | 0.11% | 1 | 2.63% |
| James Simmons | 1 | 0.04% | 1 | 2.63% |
| Jani Nikula | 1 | 0.04% | 1 | 2.63% |
| Thomas Gleixner | 1 | 0.04% | 1 | 2.63% |
| Total | 2748 | 38 |
// SPDX-License-Identifier: GPL-2.0-only /* cg14.c: CGFOURTEEN frame buffer driver * * Copyright (C) 2003, 2006 David S. Miller (davem@davemloft.net) * Copyright (C) 1996,1998 Jakub Jelinek (jj@ultra.linux.cz) * Copyright (C) 1995 Miguel de Icaza (miguel@nuclecu.unam.mx) * * 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/uaccess.h> #include <linux/of_device.h> #include <asm/io.h> #include <asm/fbio.h> #include "sbuslib.h" /* * Local functions. */ static int cg14_setcolreg(unsigned, unsigned, unsigned, unsigned, unsigned, struct fb_info *); static int cg14_mmap(struct fb_info *, struct vm_area_struct *); static int cg14_ioctl(struct fb_info *, unsigned int, unsigned long); static int cg14_pan_display(struct fb_var_screeninfo *, struct fb_info *); /* * Frame buffer operations */ static const struct fb_ops cg14_ops = { .owner = THIS_MODULE, .fb_setcolreg = cg14_setcolreg, .fb_pan_display = cg14_pan_display, .fb_fillrect = cfb_fillrect, .fb_copyarea = cfb_copyarea, .fb_imageblit = cfb_imageblit, .fb_mmap = cg14_mmap, .fb_ioctl = cg14_ioctl, #ifdef CONFIG_COMPAT .fb_compat_ioctl = sbusfb_compat_ioctl, #endif }; #define CG14_MCR_INTENABLE_SHIFT 7 #define CG14_MCR_INTENABLE_MASK 0x80 #define CG14_MCR_VIDENABLE_SHIFT 6 #define CG14_MCR_VIDENABLE_MASK 0x40 #define CG14_MCR_PIXMODE_SHIFT 4 #define CG14_MCR_PIXMODE_MASK 0x30 #define CG14_MCR_TMR_SHIFT 2 #define CG14_MCR_TMR_MASK 0x0c #define CG14_MCR_TMENABLE_SHIFT 1 #define CG14_MCR_TMENABLE_MASK 0x02 #define CG14_MCR_RESET_SHIFT 0 #define CG14_MCR_RESET_MASK 0x01 #define CG14_REV_REVISION_SHIFT 4 #define CG14_REV_REVISION_MASK 0xf0 #define CG14_REV_IMPL_SHIFT 0 #define CG14_REV_IMPL_MASK 0x0f #define CG14_VBR_FRAMEBASE_SHIFT 12 #define CG14_VBR_FRAMEBASE_MASK 0x00fff000 #define CG14_VMCR1_SETUP_SHIFT 0 #define CG14_VMCR1_SETUP_MASK 0x000001ff #define CG14_VMCR1_VCONFIG_SHIFT 9 #define CG14_VMCR1_VCONFIG_MASK 0x00000e00 #define CG14_VMCR2_REFRESH_SHIFT 0 #define CG14_VMCR2_REFRESH_MASK 0x00000001 #define CG14_VMCR2_TESTROWCNT_SHIFT 1 #define CG14_VMCR2_TESTROWCNT_MASK 0x00000002 #define CG14_VMCR2_FBCONFIG_SHIFT 2 #define CG14_VMCR2_FBCONFIG_MASK 0x0000000c #define CG14_VCR_REFRESHREQ_SHIFT 0 #define CG14_VCR_REFRESHREQ_MASK 0x000003ff #define CG14_VCR1_REFRESHENA_SHIFT 10 #define CG14_VCR1_REFRESHENA_MASK 0x00000400 #define CG14_VCA_CAD_SHIFT 0 #define CG14_VCA_CAD_MASK 0x000003ff #define CG14_VCA_VERS_SHIFT 10 #define CG14_VCA_VERS_MASK 0x00000c00 #define CG14_VCA_RAMSPEED_SHIFT 12 #define CG14_VCA_RAMSPEED_MASK 0x00001000 #define CG14_VCA_8MB_SHIFT 13 #define CG14_VCA_8MB_MASK 0x00002000 #define CG14_MCR_PIXMODE_8 0 #define CG14_MCR_PIXMODE_16 2 #define CG14_MCR_PIXMODE_32 3 struct cg14_regs{ u8 mcr; /* Master Control Reg */ u8 ppr; /* Packed Pixel Reg */ u8 tms[2]; /* Test Mode Status Regs */ u8 msr; /* Master Status Reg */ u8 fsr; /* Fault Status Reg */ u8 rev; /* Revision & Impl */ u8 ccr; /* Clock Control Reg */ u32 tmr; /* Test Mode Read Back */ u8 mod; /* Monitor Operation Data Reg */ u8 acr; /* Aux Control */ u8 xxx0[6]; u16 hct; /* Hor Counter */ u16 vct; /* Vert Counter */ u16 hbs; /* Hor Blank Start */ u16 hbc; /* Hor Blank Clear */ u16 hss; /* Hor Sync Start */ u16 hsc; /* Hor Sync Clear */ u16 csc; /* Composite Sync Clear */ u16 vbs; /* Vert Blank Start */ u16 vbc; /* Vert Blank Clear */ u16 vss; /* Vert Sync Start */ u16 vsc; /* Vert Sync Clear */ u16 xcs; u16 xcc; u16 fsa; /* Fault Status Address */ u16 adr; /* Address Registers */ u8 xxx1[0xce]; u8 pcg[0x100]; /* Pixel Clock Generator */ u32 vbr; /* Frame Base Row */ u32 vmcr; /* VBC Master Control */ u32 vcr; /* VBC refresh */ u32 vca; /* VBC Config */ }; #define CG14_CCR_ENABLE 0x04 #define CG14_CCR_SELECT 0x02 /* HW/Full screen */ struct cg14_cursor { u32 cpl0[32]; /* Enable plane 0 */ u32 cpl1[32]; /* Color selection plane */ u8 ccr; /* Cursor Control Reg */ u8 xxx0[3]; u16 cursx; /* Cursor x,y position */ u16 cursy; /* Cursor x,y position */ u32 color0; u32 color1; u32 xxx1[0x1bc]; u32 cpl0i[32]; /* Enable plane 0 autoinc */ u32 cpl1i[32]; /* Color selection autoinc */ }; struct cg14_dac { u8 addr; /* Address Register */ u8 xxx0[255]; u8 glut; /* Gamma table */ u8 xxx1[255]; u8 select; /* Register Select */ u8 xxx2[255]; u8 mode; /* Mode Register */ }; struct cg14_xlut{ u8 x_xlut [256]; u8 x_xlutd [256]; u8 xxx0[0x600]; u8 x_xlut_inc [256]; u8 x_xlutd_inc [256]; }; /* Color look up table (clut) */ /* Each one of these arrays hold the color lookup table (for 256 * colors) for each MDI page (I assume then there should be 4 MDI * pages, I still wonder what they are. I have seen NeXTStep split * the screen in four parts, while operating in 24 bits mode. Each * integer holds 4 values: alpha value (transparency channel, thanks * go to John Stone (johns@umr.edu) from OpenBSD), red, green and blue * * I currently use the clut instead of the Xlut */ struct cg14_clut { u32 c_clut [256]; u32 c_clutd [256]; /* i wonder what the 'd' is for */ u32 c_clut_inc [256]; u32 c_clutd_inc [256]; }; #define CG14_MMAP_ENTRIES 16 struct cg14_par { spinlock_t lock; struct cg14_regs __iomem *regs; struct cg14_clut __iomem *clut; struct cg14_cursor __iomem *cursor; u32 flags; #define CG14_FLAG_BLANKED 0x00000001 unsigned long iospace; struct sbus_mmap_map mmap_map[CG14_MMAP_ENTRIES]; int mode; int ramsize; }; static void __cg14_reset(struct cg14_par *par) { struct cg14_regs __iomem *regs = par->regs; u8 val; val = sbus_readb(®s->mcr); val &= ~(CG14_MCR_PIXMODE_MASK); sbus_writeb(val, ®s->mcr); } static int cg14_pan_display(struct fb_var_screeninfo *var, struct fb_info *info) { struct cg14_par *par = (struct cg14_par *) info->par; unsigned long flags; /* We just use this to catch switches out of * graphics mode. */ spin_lock_irqsave(&par->lock, flags); __cg14_reset(par); spin_unlock_irqrestore(&par->lock, flags); if (var->xoffset || var->yoffset || var->vmode) return -EINVAL; return 0; } /** * cg14_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 cg14_setcolreg(unsigned regno, unsigned red, unsigned green, unsigned blue, unsigned transp, struct fb_info *info) { struct cg14_par *par = (struct cg14_par *) info->par; struct cg14_clut __iomem *clut = par->clut; unsigned long flags; u32 val; if (regno >= 256) return 1; red >>= 8; green >>= 8; blue >>= 8; val = (red | (green << 8) | (blue << 16)); spin_lock_irqsave(&par->lock, flags); sbus_writel(val, &clut->c_clut[regno]); spin_unlock_irqrestore(&par->lock, flags); return 0; } static int cg14_mmap(struct fb_info *info, struct vm_area_struct *vma) { struct cg14_par *par = (struct cg14_par *) info->par; return sbusfb_mmap_helper(par->mmap_map, info->fix.smem_start, info->fix.smem_len, par->iospace, vma); } static int cg14_ioctl(struct fb_info *info, unsigned int cmd, unsigned long arg) { struct cg14_par *par = (struct cg14_par *) info->par; struct cg14_regs __iomem *regs = par->regs; struct mdi_cfginfo kmdi, __user *mdii; unsigned long flags; int cur_mode, mode, ret = 0; switch (cmd) { case MDI_RESET: spin_lock_irqsave(&par->lock, flags); __cg14_reset(par); spin_unlock_irqrestore(&par->lock, flags); break; case MDI_GET_CFGINFO: memset(&kmdi, 0, sizeof(kmdi)); spin_lock_irqsave(&par->lock, flags); kmdi.mdi_type = FBTYPE_MDICOLOR; kmdi.mdi_height = info->var.yres; kmdi.mdi_width = info->var.xres; kmdi.mdi_mode = par->mode; kmdi.mdi_pixfreq = 72; /* FIXME */ kmdi.mdi_size = par->ramsize; spin_unlock_irqrestore(&par->lock, flags); mdii = (struct mdi_cfginfo __user *) arg; if (copy_to_user(mdii, &kmdi, sizeof(kmdi))) ret = -EFAULT; break; case MDI_SET_PIXELMODE: if (get_user(mode, (int __user *) arg)) { ret = -EFAULT; break; } spin_lock_irqsave(&par->lock, flags); cur_mode = sbus_readb(®s->mcr); cur_mode &= ~CG14_MCR_PIXMODE_MASK; switch(mode) { case MDI_32_PIX: cur_mode |= (CG14_MCR_PIXMODE_32 << CG14_MCR_PIXMODE_SHIFT); break; case MDI_16_PIX: cur_mode |= (CG14_MCR_PIXMODE_16 << CG14_MCR_PIXMODE_SHIFT); break; case MDI_8_PIX: break; default: ret = -ENOSYS; break; } if (!ret) { sbus_writeb(cur_mode, ®s->mcr); par->mode = mode; } spin_unlock_irqrestore(&par->lock, flags); break; default: ret = sbusfb_ioctl_helper(cmd, arg, info, FBTYPE_MDICOLOR, 8, info->fix.smem_len); break; } return ret; } /* * Initialisation */ static void cg14_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_CG14; } static struct sbus_mmap_map __cg14_mmap_map[CG14_MMAP_ENTRIES] = { { .voff = CG14_REGS, .poff = 0x80000000, .size = 0x1000 }, { .voff = CG14_XLUT, .poff = 0x80003000, .size = 0x1000 }, { .voff = CG14_CLUT1, .poff = 0x80004000, .size = 0x1000 }, { .voff = CG14_CLUT2, .poff = 0x80005000, .size = 0x1000 }, { .voff = CG14_CLUT3, .poff = 0x80006000, .size = 0x1000 }, { .voff = CG3_MMAP_OFFSET - 0x7000, .poff = 0x80000000, .size = 0x7000 }, { .voff = CG3_MMAP_OFFSET, .poff = 0x00000000, .size = SBUS_MMAP_FBSIZE(1) }, { .voff = MDI_CURSOR_MAP, .poff = 0x80001000, .size = 0x1000 }, { .voff = MDI_CHUNKY_BGR_MAP, .poff = 0x01000000, .size = 0x400000 }, { .voff = MDI_PLANAR_X16_MAP, .poff = 0x02000000, .size = 0x200000 }, { .voff = MDI_PLANAR_C16_MAP, .poff = 0x02800000, .size = 0x200000 }, { .voff = MDI_PLANAR_X32_MAP, .poff = 0x03000000, .size = 0x100000 }, { .voff = MDI_PLANAR_B32_MAP, .poff = 0x03400000, .size = 0x100000 }, { .voff = MDI_PLANAR_G32_MAP, .poff = 0x03800000, .size = 0x100000 }, { .voff = MDI_PLANAR_R32_MAP, .poff = 0x03c00000, .size = 0x100000 }, { .size = 0 } }; static void cg14_unmap_regs(struct platform_device *op, struct fb_info *info, struct cg14_par *par) { if (par->regs) of_iounmap(&op->resource[0], par->regs, sizeof(struct cg14_regs)); if (par->clut) of_iounmap(&op->resource[0], par->clut, sizeof(struct cg14_clut)); if (par->cursor) of_iounmap(&op->resource[0], par->cursor, sizeof(struct cg14_cursor)); if (info->screen_base) of_iounmap(&op->resource[1], info->screen_base, info->fix.smem_len); } static int cg14_probe(struct platform_device *op) { struct device_node *dp = op->dev.of_node; struct fb_info *info; struct cg14_par *par; int is_8mb, linebytes, i, err; info = framebuffer_alloc(sizeof(struct cg14_par), &op->dev); err = -ENOMEM; if (!info) goto out_err; par = info->par; spin_lock_init(&par->lock); 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); if (of_node_name_eq(dp->parent, "sbus") || of_node_name_eq(dp->parent, "sbi")) { info->fix.smem_start = op->resource[0].start; par->iospace = op->resource[0].flags & IORESOURCE_BITS; } else { info->fix.smem_start = op->resource[1].start; par->iospace = op->resource[0].flags & IORESOURCE_BITS; } par->regs = of_ioremap(&op->resource[0], 0, sizeof(struct cg14_regs), "cg14 regs"); par->clut = of_ioremap(&op->resource[0], CG14_CLUT1, sizeof(struct cg14_clut), "cg14 clut"); par->cursor = of_ioremap(&op->resource[0], CG14_CURSORREGS, sizeof(struct cg14_cursor), "cg14 cursor"); info->screen_base = of_ioremap(&op->resource[1], 0, info->fix.smem_len, "cg14 ram"); if (!par->regs || !par->clut || !par->cursor || !info->screen_base) goto out_unmap_regs; is_8mb = (resource_size(&op->resource[1]) == (8 * 1024 * 1024)); BUILD_BUG_ON(sizeof(par->mmap_map) != sizeof(__cg14_mmap_map)); memcpy(&par->mmap_map, &__cg14_mmap_map, sizeof(par->mmap_map)); for (i = 0; i < CG14_MMAP_ENTRIES; i++) { struct sbus_mmap_map *map = &par->mmap_map[i]; if (!map->size) break; if (map->poff & 0x80000000) map->poff = (map->poff & 0x7fffffff) + (op->resource[0].start - op->resource[1].start); if (is_8mb && map->size >= 0x100000 && map->size <= 0x400000) map->size *= 2; } par->mode = MDI_8_PIX; par->ramsize = (is_8mb ? 0x800000 : 0x400000); info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_YPAN; info->fbops = &cg14_ops; __cg14_reset(par); if (fb_alloc_cmap(&info->cmap, 256, 0)) goto out_unmap_regs; fb_set_cmap(&info->cmap, info); cg14_init_fix(info, linebytes, dp); err = register_framebuffer(info); if (err < 0) goto out_dealloc_cmap; dev_set_drvdata(&op->dev, info); printk(KERN_INFO "%pOF: cgfourteen at %lx:%lx, %dMB\n", dp, par->iospace, info->fix.smem_start, par->ramsize >> 20); return 0; out_dealloc_cmap: fb_dealloc_cmap(&info->cmap); out_unmap_regs: cg14_unmap_regs(op, info, par); framebuffer_release(info); out_err: return err; } static int cg14_remove(struct platform_device *op) { struct fb_info *info = dev_get_drvdata(&op->dev); struct cg14_par *par = info->par; unregister_framebuffer(info); fb_dealloc_cmap(&info->cmap); cg14_unmap_regs(op, info, par); framebuffer_release(info); return 0; } static const struct of_device_id cg14_match[] = { { .name = "cgfourteen", }, {}, }; MODULE_DEVICE_TABLE(of, cg14_match); static struct platform_driver cg14_driver = { .driver = { .name = "cg14", .of_match_table = cg14_match, }, .probe = cg14_probe, .remove = cg14_remove, }; static int __init cg14_init(void) { if (fb_get_options("cg14fb", NULL)) return -ENODEV; return platform_driver_register(&cg14_driver); } static void __exit cg14_exit(void) { platform_driver_unregister(&cg14_driver); } module_init(cg14_init); module_exit(cg14_exit); MODULE_DESCRIPTION("framebuffer driver for CGfourteen chipsets"); MODULE_AUTHOR("David S. Miller <davem@davemloft.net>"); MODULE_VERSION("2.0"); MODULE_LICENSE("GPL");
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