| /* leo.c: LEO frame buffer driver |
| * |
| * Copyright (C) 2003, 2006 David S. Miller (davem@davemloft.net) |
| * Copyright (C) 1996-1999 Jakub Jelinek (jj@ultra.linux.cz) |
| * Copyright (C) 1997 Michal Rehacek (Michal.Rehacek@st.mff.cuni.cz) |
| * |
| * 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_device.h> |
| #include <linux/io.h> |
| |
| #include <asm/fbio.h> |
| |
| #include "sbuslib.h" |
| |
| /* |
| * Local functions. |
| */ |
| |
| static int leo_setcolreg(unsigned, unsigned, unsigned, unsigned, |
| unsigned, struct fb_info *); |
| static int leo_blank(int, struct fb_info *); |
| |
| static int leo_mmap(struct fb_info *, struct vm_area_struct *); |
| static int leo_ioctl(struct fb_info *, unsigned int, unsigned long); |
| static int leo_pan_display(struct fb_var_screeninfo *, struct fb_info *); |
| |
| /* |
| * Frame buffer operations |
| */ |
| |
| static struct fb_ops leo_ops = { |
| .owner = THIS_MODULE, |
| .fb_setcolreg = leo_setcolreg, |
| .fb_blank = leo_blank, |
| .fb_pan_display = leo_pan_display, |
| .fb_fillrect = cfb_fillrect, |
| .fb_copyarea = cfb_copyarea, |
| .fb_imageblit = cfb_imageblit, |
| .fb_mmap = leo_mmap, |
| .fb_ioctl = leo_ioctl, |
| #ifdef CONFIG_COMPAT |
| .fb_compat_ioctl = sbusfb_compat_ioctl, |
| #endif |
| }; |
| |
| #define LEO_OFF_LC_SS0_KRN 0x00200000UL |
| #define LEO_OFF_LC_SS0_USR 0x00201000UL |
| #define LEO_OFF_LC_SS1_KRN 0x01200000UL |
| #define LEO_OFF_LC_SS1_USR 0x01201000UL |
| #define LEO_OFF_LD_SS0 0x00400000UL |
| #define LEO_OFF_LD_SS1 0x01400000UL |
| #define LEO_OFF_LD_GBL 0x00401000UL |
| #define LEO_OFF_LX_KRN 0x00600000UL |
| #define LEO_OFF_LX_CURSOR 0x00601000UL |
| #define LEO_OFF_SS0 0x00800000UL |
| #define LEO_OFF_SS1 0x01800000UL |
| #define LEO_OFF_UNK 0x00602000UL |
| #define LEO_OFF_UNK2 0x00000000UL |
| |
| #define LEO_CUR_ENABLE 0x00000080 |
| #define LEO_CUR_UPDATE 0x00000030 |
| #define LEO_CUR_PROGRESS 0x00000006 |
| #define LEO_CUR_UPDATECMAP 0x00000003 |
| |
| #define LEO_CUR_TYPE_MASK 0x00000000 |
| #define LEO_CUR_TYPE_IMAGE 0x00000020 |
| #define LEO_CUR_TYPE_CMAP 0x00000050 |
| |
| struct leo_cursor { |
| u8 xxx0[16]; |
| u32 cur_type; |
| u32 cur_misc; |
| u32 cur_cursxy; |
| u32 cur_data; |
| }; |
| |
| #define LEO_KRN_TYPE_CLUT0 0x00001000 |
| #define LEO_KRN_TYPE_CLUT1 0x00001001 |
| #define LEO_KRN_TYPE_CLUT2 0x00001002 |
| #define LEO_KRN_TYPE_WID 0x00001003 |
| #define LEO_KRN_TYPE_UNK 0x00001006 |
| #define LEO_KRN_TYPE_VIDEO 0x00002003 |
| #define LEO_KRN_TYPE_CLUTDATA 0x00004000 |
| #define LEO_KRN_CSR_ENABLE 0x00000008 |
| #define LEO_KRN_CSR_PROGRESS 0x00000004 |
| #define LEO_KRN_CSR_UNK 0x00000002 |
| #define LEO_KRN_CSR_UNK2 0x00000001 |
| |
| struct leo_lx_krn { |
| u32 krn_type; |
| u32 krn_csr; |
| u32 krn_value; |
| }; |
| |
| struct leo_lc_ss0_krn { |
| u32 misc; |
| u8 xxx0[0x800-4]; |
| u32 rev; |
| }; |
| |
| struct leo_lc_ss0_usr { |
| u32 csr; |
| u32 addrspace; |
| u32 fontmsk; |
| u32 fontt; |
| u32 extent; |
| u32 src; |
| u32 dst; |
| u32 copy; |
| u32 fill; |
| }; |
| |
| struct leo_lc_ss1_krn { |
| u8 unknown; |
| }; |
| |
| struct leo_lc_ss1_usr { |
| u8 unknown; |
| }; |
| |
| struct leo_ld_ss0 { |
| u8 xxx0[0xe00]; |
| u32 csr; |
| u32 wid; |
| u32 wmask; |
| u32 widclip; |
| u32 vclipmin; |
| u32 vclipmax; |
| u32 pickmin; /* SS1 only */ |
| u32 pickmax; /* SS1 only */ |
| u32 fg; |
| u32 bg; |
| u32 src; /* Copy/Scroll (SS0 only) */ |
| u32 dst; /* Copy/Scroll/Fill (SS0 only) */ |
| u32 extent; /* Copy/Scroll/Fill size (SS0 only) */ |
| u32 xxx1[3]; |
| u32 setsem; /* SS1 only */ |
| u32 clrsem; /* SS1 only */ |
| u32 clrpick; /* SS1 only */ |
| u32 clrdat; /* SS1 only */ |
| u32 alpha; /* SS1 only */ |
| u8 xxx2[0x2c]; |
| u32 winbg; |
| u32 planemask; |
| u32 rop; |
| u32 z; |
| u32 dczf; /* SS1 only */ |
| u32 dczb; /* SS1 only */ |
| u32 dcs; /* SS1 only */ |
| u32 dczs; /* SS1 only */ |
| u32 pickfb; /* SS1 only */ |
| u32 pickbb; /* SS1 only */ |
| u32 dcfc; /* SS1 only */ |
| u32 forcecol; /* SS1 only */ |
| u32 door[8]; /* SS1 only */ |
| u32 pick[5]; /* SS1 only */ |
| }; |
| |
| #define LEO_SS1_MISC_ENABLE 0x00000001 |
| #define LEO_SS1_MISC_STEREO 0x00000002 |
| struct leo_ld_ss1 { |
| u8 xxx0[0xef4]; |
| u32 ss1_misc; |
| }; |
| |
| struct leo_ld_gbl { |
| u8 unknown; |
| }; |
| |
| struct leo_par { |
| spinlock_t lock; |
| struct leo_lx_krn __iomem *lx_krn; |
| struct leo_lc_ss0_usr __iomem *lc_ss0_usr; |
| struct leo_ld_ss0 __iomem *ld_ss0; |
| struct leo_ld_ss1 __iomem *ld_ss1; |
| struct leo_cursor __iomem *cursor; |
| u32 extent; |
| u32 clut_data[256]; |
| |
| u32 flags; |
| #define LEO_FLAG_BLANKED 0x00000001 |
| |
| unsigned long which_io; |
| }; |
| |
| static void leo_wait(struct leo_lx_krn __iomem *lx_krn) |
| { |
| int i; |
| |
| for (i = 0; |
| (sbus_readl(&lx_krn->krn_csr) & LEO_KRN_CSR_PROGRESS) && |
| i < 300000; |
| i++) |
| udelay(1); /* Busy wait at most 0.3 sec */ |
| return; |
| } |
| |
| static void leo_switch_from_graph(struct fb_info *info) |
| { |
| struct leo_par *par = (struct leo_par *) info->par; |
| struct leo_ld_ss0 __iomem *ss = par->ld_ss0; |
| struct leo_cursor __iomem *cursor = par->cursor; |
| unsigned long flags; |
| u32 val; |
| |
| spin_lock_irqsave(&par->lock, flags); |
| |
| par->extent = ((info->var.xres - 1) | |
| ((info->var.yres - 1) << 16)); |
| |
| sbus_writel(0xffffffff, &ss->wid); |
| sbus_writel(0xffff, &ss->wmask); |
| sbus_writel(0, &ss->vclipmin); |
| sbus_writel(par->extent, &ss->vclipmax); |
| sbus_writel(0, &ss->fg); |
| sbus_writel(0xff000000, &ss->planemask); |
| sbus_writel(0x310850, &ss->rop); |
| sbus_writel(0, &ss->widclip); |
| sbus_writel((info->var.xres-1) | ((info->var.yres-1) << 11), |
| &par->lc_ss0_usr->extent); |
| sbus_writel(4, &par->lc_ss0_usr->addrspace); |
| sbus_writel(0x80000000, &par->lc_ss0_usr->fill); |
| sbus_writel(0, &par->lc_ss0_usr->fontt); |
| do { |
| val = sbus_readl(&par->lc_ss0_usr->csr); |
| } while (val & 0x20000000); |
| |
| /* setup screen buffer for cfb_* functions */ |
| sbus_writel(1, &ss->wid); |
| sbus_writel(0x00ffffff, &ss->planemask); |
| sbus_writel(0x310b90, &ss->rop); |
| sbus_writel(0, &par->lc_ss0_usr->addrspace); |
| |
| /* hide cursor */ |
| sbus_writel(sbus_readl(&cursor->cur_misc) & ~LEO_CUR_ENABLE, &cursor->cur_misc); |
| |
| spin_unlock_irqrestore(&par->lock, flags); |
| } |
| |
| static int leo_pan_display(struct fb_var_screeninfo *var, struct fb_info *info) |
| { |
| /* We just use this to catch switches out of |
| * graphics mode. |
| */ |
| leo_switch_from_graph(info); |
| |
| if (var->xoffset || var->yoffset || var->vmode) |
| return -EINVAL; |
| return 0; |
| } |
| |
| /** |
| * leo_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 leo_setcolreg(unsigned regno, |
| unsigned red, unsigned green, unsigned blue, |
| unsigned transp, struct fb_info *info) |
| { |
| struct leo_par *par = (struct leo_par *) info->par; |
| struct leo_lx_krn __iomem *lx_krn = par->lx_krn; |
| unsigned long flags; |
| u32 val; |
| int i; |
| |
| if (regno >= 256) |
| return 1; |
| |
| red >>= 8; |
| green >>= 8; |
| blue >>= 8; |
| |
| par->clut_data[regno] = red | (green << 8) | (blue << 16); |
| |
| spin_lock_irqsave(&par->lock, flags); |
| |
| leo_wait(lx_krn); |
| |
| sbus_writel(LEO_KRN_TYPE_CLUTDATA, &lx_krn->krn_type); |
| for (i = 0; i < 256; i++) |
| sbus_writel(par->clut_data[i], &lx_krn->krn_value); |
| sbus_writel(LEO_KRN_TYPE_CLUT0, &lx_krn->krn_type); |
| |
| val = sbus_readl(&lx_krn->krn_csr); |
| val |= (LEO_KRN_CSR_UNK | LEO_KRN_CSR_UNK2); |
| sbus_writel(val, &lx_krn->krn_csr); |
| |
| spin_unlock_irqrestore(&par->lock, flags); |
| |
| return 0; |
| } |
| |
| /** |
| * leo_blank - Optional function. Blanks the display. |
| * @blank_mode: the blank mode we want. |
| * @info: frame buffer structure that represents a single frame buffer |
| */ |
| static int leo_blank(int blank, struct fb_info *info) |
| { |
| struct leo_par *par = (struct leo_par *) info->par; |
| struct leo_lx_krn __iomem *lx_krn = par->lx_krn; |
| unsigned long flags; |
| u32 val; |
| |
| spin_lock_irqsave(&par->lock, flags); |
| |
| switch (blank) { |
| case FB_BLANK_UNBLANK: /* Unblanking */ |
| val = sbus_readl(&lx_krn->krn_csr); |
| val |= LEO_KRN_CSR_ENABLE; |
| sbus_writel(val, &lx_krn->krn_csr); |
| par->flags &= ~LEO_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(&lx_krn->krn_csr); |
| val &= ~LEO_KRN_CSR_ENABLE; |
| sbus_writel(val, &lx_krn->krn_csr); |
| par->flags |= LEO_FLAG_BLANKED; |
| break; |
| } |
| |
| spin_unlock_irqrestore(&par->lock, flags); |
| |
| return 0; |
| } |
| |
| static struct sbus_mmap_map leo_mmap_map[] = { |
| { |
| .voff = LEO_SS0_MAP, |
| .poff = LEO_OFF_SS0, |
| .size = 0x800000 |
| }, |
| { |
| .voff = LEO_LC_SS0_USR_MAP, |
| .poff = LEO_OFF_LC_SS0_USR, |
| .size = 0x1000 |
| }, |
| { |
| .voff = LEO_LD_SS0_MAP, |
| .poff = LEO_OFF_LD_SS0, |
| .size = 0x1000 |
| }, |
| { |
| .voff = LEO_LX_CURSOR_MAP, |
| .poff = LEO_OFF_LX_CURSOR, |
| .size = 0x1000 |
| }, |
| { |
| .voff = LEO_SS1_MAP, |
| .poff = LEO_OFF_SS1, |
| .size = 0x800000 |
| }, |
| { |
| .voff = LEO_LC_SS1_USR_MAP, |
| .poff = LEO_OFF_LC_SS1_USR, |
| .size = 0x1000 |
| }, |
| { |
| .voff = LEO_LD_SS1_MAP, |
| .poff = LEO_OFF_LD_SS1, |
| .size = 0x1000 |
| }, |
| { |
| .voff = LEO_UNK_MAP, |
| .poff = LEO_OFF_UNK, |
| .size = 0x1000 |
| }, |
| { |
| .voff = LEO_LX_KRN_MAP, |
| .poff = LEO_OFF_LX_KRN, |
| .size = 0x1000 |
| }, |
| { |
| .voff = LEO_LC_SS0_KRN_MAP, |
| .poff = LEO_OFF_LC_SS0_KRN, |
| .size = 0x1000 |
| }, |
| { |
| .voff = LEO_LC_SS1_KRN_MAP, |
| .poff = LEO_OFF_LC_SS1_KRN, |
| .size = 0x1000 |
| }, |
| { |
| .voff = LEO_LD_GBL_MAP, |
| .poff = LEO_OFF_LD_GBL, |
| .size = 0x1000 |
| }, |
| { |
| .voff = LEO_UNK2_MAP, |
| .poff = LEO_OFF_UNK2, |
| .size = 0x100000 |
| }, |
| { .size = 0 } |
| }; |
| |
| static int leo_mmap(struct fb_info *info, struct vm_area_struct *vma) |
| { |
| struct leo_par *par = (struct leo_par *)info->par; |
| |
| return sbusfb_mmap_helper(leo_mmap_map, |
| info->fix.smem_start, info->fix.smem_len, |
| par->which_io, vma); |
| } |
| |
| static int leo_ioctl(struct fb_info *info, unsigned int cmd, unsigned long arg) |
| { |
| return sbusfb_ioctl_helper(cmd, arg, info, |
| FBTYPE_SUNLEO, 32, info->fix.smem_len); |
| } |
| |
| /* |
| * Initialisation |
| */ |
| |
| static void |
| leo_init_fix(struct fb_info *info, struct device_node *dp) |
| { |
| strlcpy(info->fix.id, dp->name, sizeof(info->fix.id)); |
| |
| info->fix.type = FB_TYPE_PACKED_PIXELS; |
| info->fix.visual = FB_VISUAL_TRUECOLOR; |
| |
| info->fix.line_length = 8192; |
| |
| info->fix.accel = FB_ACCEL_SUN_LEO; |
| } |
| |
| static void leo_wid_put(struct fb_info *info, struct fb_wid_list *wl) |
| { |
| struct leo_par *par = (struct leo_par *) info->par; |
| struct leo_lx_krn __iomem *lx_krn = par->lx_krn; |
| struct fb_wid_item *wi; |
| unsigned long flags; |
| u32 val; |
| int i, j; |
| |
| spin_lock_irqsave(&par->lock, flags); |
| |
| leo_wait(lx_krn); |
| |
| for (i = 0, wi = wl->wl_list; i < wl->wl_count; i++, wi++) { |
| switch (wi->wi_type) { |
| case FB_WID_DBL_8: |
| j = (wi->wi_index & 0xf) + 0x40; |
| break; |
| |
| case FB_WID_DBL_24: |
| j = wi->wi_index & 0x3f; |
| break; |
| |
| default: |
| continue; |
| }; |
| sbus_writel(0x5800 + j, &lx_krn->krn_type); |
| sbus_writel(wi->wi_values[0], &lx_krn->krn_value); |
| } |
| sbus_writel(LEO_KRN_TYPE_WID, &lx_krn->krn_type); |
| |
| val = sbus_readl(&lx_krn->krn_csr); |
| val |= (LEO_KRN_CSR_UNK | LEO_KRN_CSR_UNK2); |
| sbus_writel(val, &lx_krn->krn_csr); |
| |
| spin_unlock_irqrestore(&par->lock, flags); |
| } |
| |
| static void leo_init_wids(struct fb_info *info) |
| { |
| struct fb_wid_item wi; |
| struct fb_wid_list wl; |
| |
| wl.wl_count = 1; |
| wl.wl_list = &wi; |
| wi.wi_type = FB_WID_DBL_8; |
| wi.wi_index = 0; |
| wi.wi_values [0] = 0x2c0; |
| leo_wid_put(info, &wl); |
| wi.wi_index = 1; |
| wi.wi_values [0] = 0x30; |
| leo_wid_put(info, &wl); |
| wi.wi_index = 2; |
| wi.wi_values [0] = 0x20; |
| leo_wid_put(info, &wl); |
| wi.wi_type = FB_WID_DBL_24; |
| wi.wi_index = 1; |
| wi.wi_values [0] = 0x30; |
| leo_wid_put(info, &wl); |
| } |
| |
| static void leo_init_hw(struct fb_info *info) |
| { |
| struct leo_par *par = (struct leo_par *) info->par; |
| u32 val; |
| |
| val = sbus_readl(&par->ld_ss1->ss1_misc); |
| val |= LEO_SS1_MISC_ENABLE; |
| sbus_writel(val, &par->ld_ss1->ss1_misc); |
| |
| leo_switch_from_graph(info); |
| } |
| |
| static void leo_fixup_var_rgb(struct fb_var_screeninfo *var) |
| { |
| var->red.offset = 0; |
| var->red.length = 8; |
| var->green.offset = 8; |
| var->green.length = 8; |
| var->blue.offset = 16; |
| var->blue.length = 8; |
| var->transp.offset = 0; |
| var->transp.length = 0; |
| } |
| |
| static void leo_unmap_regs(struct of_device *op, struct fb_info *info, |
| struct leo_par *par) |
| { |
| if (par->lc_ss0_usr) |
| of_iounmap(&op->resource[0], par->lc_ss0_usr, 0x1000); |
| if (par->ld_ss0) |
| of_iounmap(&op->resource[0], par->ld_ss0, 0x1000); |
| if (par->ld_ss1) |
| of_iounmap(&op->resource[0], par->ld_ss1, 0x1000); |
| if (par->lx_krn) |
| of_iounmap(&op->resource[0], par->lx_krn, 0x1000); |
| if (par->cursor) |
| of_iounmap(&op->resource[0], |
| par->cursor, sizeof(struct leo_cursor)); |
| if (info->screen_base) |
| of_iounmap(&op->resource[0], info->screen_base, 0x800000); |
| } |
| |
| static int __devinit leo_probe(struct of_device *op, |
| const struct of_device_id *match) |
| { |
| struct device_node *dp = op->node; |
| struct fb_info *info; |
| struct leo_par *par; |
| int linebytes, err; |
| |
| info = framebuffer_alloc(sizeof(struct leo_par), &op->dev); |
| |
| err = -ENOMEM; |
| if (!info) |
| goto out_err; |
| par = info->par; |
| |
| spin_lock_init(&par->lock); |
| |
| info->fix.smem_start = op->resource[0].start; |
| par->which_io = op->resource[0].flags & IORESOURCE_BITS; |
| |
| sbusfb_fill_var(&info->var, dp, 32); |
| leo_fixup_var_rgb(&info->var); |
| |
| linebytes = of_getintprop_default(dp, "linebytes", |
| info->var.xres); |
| info->fix.smem_len = PAGE_ALIGN(linebytes * info->var.yres); |
| |
| par->lc_ss0_usr = |
| of_ioremap(&op->resource[0], LEO_OFF_LC_SS0_USR, |
| 0x1000, "leolc ss0usr"); |
| par->ld_ss0 = |
| of_ioremap(&op->resource[0], LEO_OFF_LD_SS0, |
| 0x1000, "leold ss0"); |
| par->ld_ss1 = |
| of_ioremap(&op->resource[0], LEO_OFF_LD_SS1, |
| 0x1000, "leold ss1"); |
| par->lx_krn = |
| of_ioremap(&op->resource[0], LEO_OFF_LX_KRN, |
| 0x1000, "leolx krn"); |
| par->cursor = |
| of_ioremap(&op->resource[0], LEO_OFF_LX_CURSOR, |
| sizeof(struct leo_cursor), "leolx cursor"); |
| info->screen_base = |
| of_ioremap(&op->resource[0], LEO_OFF_SS0, |
| 0x800000, "leo ram"); |
| if (!par->lc_ss0_usr || |
| !par->ld_ss0 || |
| !par->ld_ss1 || |
| !par->lx_krn || |
| !par->cursor || |
| !info->screen_base) |
| goto out_unmap_regs; |
| |
| info->flags = FBINFO_DEFAULT; |
| info->fbops = &leo_ops; |
| info->pseudo_palette = par->clut_data; |
| |
| leo_init_wids(info); |
| leo_init_hw(info); |
| |
| leo_blank(FB_BLANK_UNBLANK, info); |
| |
| if (fb_alloc_cmap(&info->cmap, 256, 0)) |
| goto out_unmap_regs; |
| |
| leo_init_fix(info, dp); |
| |
| err = register_framebuffer(info); |
| if (err < 0) |
| goto out_dealloc_cmap; |
| |
| dev_set_drvdata(&op->dev, info); |
| |
| printk(KERN_INFO "%s: leo at %lx:%lx\n", |
| dp->full_name, |
| par->which_io, info->fix.smem_start); |
| |
| return 0; |
| |
| out_dealloc_cmap: |
| fb_dealloc_cmap(&info->cmap); |
| |
| out_unmap_regs: |
| leo_unmap_regs(op, info, par); |
| framebuffer_release(info); |
| |
| out_err: |
| return err; |
| } |
| |
| static int __devexit leo_remove(struct of_device *op) |
| { |
| struct fb_info *info = dev_get_drvdata(&op->dev); |
| struct leo_par *par = info->par; |
| |
| unregister_framebuffer(info); |
| fb_dealloc_cmap(&info->cmap); |
| |
| leo_unmap_regs(op, info, par); |
| |
| framebuffer_release(info); |
| |
| dev_set_drvdata(&op->dev, NULL); |
| |
| return 0; |
| } |
| |
| static const struct of_device_id leo_match[] = { |
| { |
| .name = "SUNW,leo", |
| }, |
| {}, |
| }; |
| MODULE_DEVICE_TABLE(of, leo_match); |
| |
| static struct of_platform_driver leo_driver = { |
| .name = "leo", |
| .match_table = leo_match, |
| .probe = leo_probe, |
| .remove = __devexit_p(leo_remove), |
| }; |
| |
| static int __init leo_init(void) |
| { |
| if (fb_get_options("leofb", NULL)) |
| return -ENODEV; |
| |
| return of_register_driver(&leo_driver, &of_bus_type); |
| } |
| |
| static void __exit leo_exit(void) |
| { |
| of_unregister_driver(&leo_driver); |
| } |
| |
| module_init(leo_init); |
| module_exit(leo_exit); |
| |
| MODULE_DESCRIPTION("framebuffer driver for LEO chipsets"); |
| MODULE_AUTHOR("David S. Miller <davem@davemloft.net>"); |
| MODULE_VERSION("2.0"); |
| MODULE_LICENSE("GPL"); |