diff options
Diffstat (limited to 'drivers/video/fbdev/leo.c')
| -rw-r--r-- | drivers/video/fbdev/leo.c | 691 | 
1 files changed, 691 insertions, 0 deletions
diff --git a/drivers/video/fbdev/leo.c b/drivers/video/fbdev/leo.c new file mode 100644 index 00000000000..2c7f7d479fe --- /dev/null +++ b/drivers/video/fbdev/leo.c @@ -0,0 +1,691 @@ +/* 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 platform_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 leo_probe(struct platform_device *op) +{ +	struct device_node *dp = op->dev.of_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 leo_remove(struct platform_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); + +	return 0; +} + +static const struct of_device_id leo_match[] = { +	{ +		.name = "SUNW,leo", +	}, +	{}, +}; +MODULE_DEVICE_TABLE(of, leo_match); + +static struct platform_driver leo_driver = { +	.driver = { +		.name = "leo", +		.owner = THIS_MODULE, +		.of_match_table = leo_match, +	}, +	.probe		= leo_probe, +	.remove		= leo_remove, +}; + +static int __init leo_init(void) +{ +	if (fb_get_options("leofb", NULL)) +		return -ENODEV; + +	return platform_driver_register(&leo_driver); +} + +static void __exit leo_exit(void) +{ +	platform_driver_unregister(&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");  | 
