Release 4.11 drivers/video/fbdev/tcx.c
/* tcx.c: TCX 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) 1996 Miguel de Icaza (miguel@nuclecu.unam.mx)
* Copyright (C) 1996 Eddie C. Dost (ecd@skynet.be)
*
* 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 <asm/io.h>
#include <asm/fbio.h>
#include "sbuslib.h"
/*
* Local functions.
*/
static int tcx_setcolreg(unsigned, unsigned, unsigned, unsigned,
unsigned, struct fb_info *);
static int tcx_blank(int, struct fb_info *);
static int tcx_mmap(struct fb_info *, struct vm_area_struct *);
static int tcx_ioctl(struct fb_info *, unsigned int, unsigned long);
static int tcx_pan_display(struct fb_var_screeninfo *, struct fb_info *);
/*
* Frame buffer operations
*/
static struct fb_ops tcx_ops = {
.owner = THIS_MODULE,
.fb_setcolreg = tcx_setcolreg,
.fb_blank = tcx_blank,
.fb_pan_display = tcx_pan_display,
.fb_fillrect = cfb_fillrect,
.fb_copyarea = cfb_copyarea,
.fb_imageblit = cfb_imageblit,
.fb_mmap = tcx_mmap,
.fb_ioctl = tcx_ioctl,
#ifdef CONFIG_COMPAT
.fb_compat_ioctl = sbusfb_compat_ioctl,
#endif
};
/* THC definitions */
#define TCX_THC_MISC_REV_SHIFT 16
#define TCX_THC_MISC_REV_MASK 15
#define TCX_THC_MISC_VSYNC_DIS (1 << 25)
#define TCX_THC_MISC_HSYNC_DIS (1 << 24)
#define TCX_THC_MISC_RESET (1 << 12)
#define TCX_THC_MISC_VIDEO (1 << 10)
#define TCX_THC_MISC_SYNC (1 << 9)
#define TCX_THC_MISC_VSYNC (1 << 8)
#define TCX_THC_MISC_SYNC_ENAB (1 << 7)
#define TCX_THC_MISC_CURS_RES (1 << 6)
#define TCX_THC_MISC_INT_ENAB (1 << 5)
#define TCX_THC_MISC_INT (1 << 4)
#define TCX_THC_MISC_INIT 0x9f
#define TCX_THC_REV_REV_SHIFT 20
#define TCX_THC_REV_REV_MASK 15
#define TCX_THC_REV_MINREV_SHIFT 28
#define TCX_THC_REV_MINREV_MASK 15
/* The contents are unknown */
struct tcx_tec {
u32 tec_matrix;
u32 tec_clip;
u32 tec_vdc;
};
struct tcx_thc {
u32 thc_rev;
u32 thc_pad0[511];
u32 thc_hs; /* hsync timing */
u32 thc_hsdvs;
u32 thc_hd;
u32 thc_vs; /* vsync timing */
u32 thc_vd;
u32 thc_refresh;
u32 thc_misc;
u32 thc_pad1[56];
u32 thc_cursxy; /* cursor x,y position (16 bits each) */
u32 thc_cursmask[32]; /* cursor mask bits */
u32 thc_cursbits[32]; /* what to show where mask enabled */
};
struct bt_regs {
u32 addr;
u32 color_map;
u32 control;
u32 cursor;
};
#define TCX_MMAP_ENTRIES 14
struct tcx_par {
spinlock_t lock;
struct bt_regs __iomem *bt;
struct tcx_thc __iomem *thc;
struct tcx_tec __iomem *tec;
u32 __iomem *cplane;
u32 flags;
#define TCX_FLAG_BLANKED 0x00000001
unsigned long which_io;
struct sbus_mmap_map mmap_map[TCX_MMAP_ENTRIES];
int lowdepth;
};
/* Reset control plane so that WID is 8-bit plane. */
static void __tcx_set_control_plane(struct fb_info *info)
{
struct tcx_par *par = info->par;
u32 __iomem *p, *pend;
if (par->lowdepth)
return;
p = par->cplane;
if (p == NULL)
return;
for (pend = p + info->fix.smem_len; p < pend; p++) {
u32 tmp = sbus_readl(p);
tmp &= 0xffffff;
sbus_writel(tmp, p);
}
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Linus Torvalds (pre-git) | 57 | 64.77% | 2 | 40.00% |
| David S. Miller | 15 | 17.05% | 1 | 20.00% |
| Krzysztof Helt | 15 | 17.05% | 1 | 20.00% |
| Al Viro | 1 | 1.14% | 1 | 20.00% |
| Total | 88 | 100.00% | 5 | 100.00% |
static void tcx_reset(struct fb_info *info)
{
struct tcx_par *par = (struct tcx_par *) info->par;
unsigned long flags;
spin_lock_irqsave(&par->lock, flags);
__tcx_set_control_plane(info);
spin_unlock_irqrestore(&par->lock, flags);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Linus Torvalds (pre-git) | 34 | 62.96% | 2 | 50.00% |
| David S. Miller | 19 | 35.19% | 1 | 25.00% |
| Krzysztof Helt | 1 | 1.85% | 1 | 25.00% |
| Total | 54 | 100.00% | 4 | 100.00% |
static int tcx_pan_display(struct fb_var_screeninfo *var, struct fb_info *info)
{
tcx_reset(info);
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Tom 'spot' Callaway | 24 | 100.00% | 1 | 100.00% |
| Total | 24 | 100.00% | 1 | 100.00% |
/**
* tcx_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 tcx_setcolreg(unsigned regno,
unsigned red, unsigned green, unsigned blue,
unsigned transp, struct fb_info *info)
{
struct tcx_par *par = (struct tcx_par *) info->par;
struct bt_regs __iomem *bt = par->bt;
unsigned long flags;
if (regno >= 256)
return 1;
red >>= 8;
green >>= 8;
blue >>= 8;
spin_lock_irqsave(&par->lock, flags);
sbus_writel(regno << 24, &bt->addr);
sbus_writel(red << 24, &bt->color_map);
sbus_writel(green << 24, &bt->color_map);
sbus_writel(blue << 24, &bt->color_map);
spin_unlock_irqrestore(&par->lock, flags);
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| David S. Miller | 83 | 56.85% | 1 | 20.00% |
| Linus Torvalds (pre-git) | 62 | 42.47% | 3 | 60.00% |
| Al Viro | 1 | 0.68% | 1 | 20.00% |
| Total | 146 | 100.00% | 5 | 100.00% |
/**
* tcx_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
tcx_blank(int blank, struct fb_info *info)
{
struct tcx_par *par = (struct tcx_par *) info->par;
struct tcx_thc __iomem *thc = par->thc;
unsigned long flags;
u32 val;
spin_lock_irqsave(&par->lock, flags);
val = sbus_readl(&thc->thc_misc);
switch (blank) {
case FB_BLANK_UNBLANK: /* Unblanking */
val &= ~(TCX_THC_MISC_VSYNC_DIS |
TCX_THC_MISC_HSYNC_DIS);
val |= TCX_THC_MISC_VIDEO;
par->flags &= ~TCX_FLAG_BLANKED;
break;
case FB_BLANK_NORMAL: /* Normal blanking */
val &= ~TCX_THC_MISC_VIDEO;
par->flags |= TCX_FLAG_BLANKED;
break;
case FB_BLANK_VSYNC_SUSPEND: /* VESA blank (vsync off) */
val |= TCX_THC_MISC_VSYNC_DIS;
break;
case FB_BLANK_HSYNC_SUSPEND: /* VESA blank (hsync off) */
val |= TCX_THC_MISC_HSYNC_DIS;
break;
case FB_BLANK_POWERDOWN: /* Poweroff */
break;
}
sbus_writel(val, &thc->thc_misc);
spin_unlock_irqrestore(&par->lock, flags);
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| David S. Miller | 102 | 64.56% | 1 | 16.67% |
| Linus Torvalds (pre-git) | 50 | 31.65% | 2 | 33.33% |
| Antonino A. Daplas | 4 | 2.53% | 1 | 16.67% |
| Al Viro | 2 | 1.27% | 2 | 33.33% |
| Total | 158 | 100.00% | 6 | 100.00% |
static struct sbus_mmap_map __tcx_mmap_map[TCX_MMAP_ENTRIES] = {
{
.voff = TCX_RAM8BIT,
.size = SBUS_MMAP_FBSIZE(1)
},
{
.voff = TCX_RAM24BIT,
.size = SBUS_MMAP_FBSIZE(4)
},
{
.voff = TCX_UNK3,
.size = SBUS_MMAP_FBSIZE(8)
},
{
.voff = TCX_UNK4,
.size = SBUS_MMAP_FBSIZE(8)
},
{
.voff = TCX_CONTROLPLANE,
.size = SBUS_MMAP_FBSIZE(4)
},
{
.voff = TCX_UNK6,
.size = SBUS_MMAP_FBSIZE(8)
},
{
.voff = TCX_UNK7,
.size = SBUS_MMAP_FBSIZE(8)
},
{
.voff = TCX_TEC,
.size = PAGE_SIZE
},
{
.voff = TCX_BTREGS,
.size = PAGE_SIZE
},
{
.voff = TCX_THC,
.size = PAGE_SIZE
},
{
.voff = TCX_DHC,
.size = PAGE_SIZE
},
{
.voff = TCX_ALT,
.size = PAGE_SIZE
},
{
.voff = TCX_UNK2,
.size = 0x20000
},
{ .size = 0 }
};
static int tcx_mmap(struct fb_info *info, struct vm_area_struct *vma)
{
struct tcx_par *par = (struct tcx_par *)info->par;
return sbusfb_mmap_helper(par->mmap_map,
info->fix.smem_start, info->fix.smem_len,
par->which_io, vma);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| David S. Miller | 28 | 50.00% | 1 | 20.00% |
| Linus Torvalds (pre-git) | 19 | 33.93% | 2 | 40.00% |
| Krzysztof Helt | 8 | 14.29% | 1 | 20.00% |
| James Simmons | 1 | 1.79% | 1 | 20.00% |
| Total | 56 | 100.00% | 5 | 100.00% |
static int tcx_ioctl(struct fb_info *info, unsigned int cmd,
unsigned long arg)
{
struct tcx_par *par = (struct tcx_par *) info->par;
return sbusfb_ioctl_helper(cmd, arg, info,
FBTYPE_TCXCOLOR,
(par->lowdepth ? 8 : 24),
info->fix.smem_len);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| David S. Miller | 55 | 90.16% | 2 | 50.00% |
| Krzysztof Helt | 4 | 6.56% | 1 | 25.00% |
| Christoph Hellwig | 2 | 3.28% | 1 | 25.00% |
| Total | 61 | 100.00% | 4 | 100.00% |
/*
* Initialisation
*/
static void
tcx_init_fix(struct fb_info *info, int linebytes)
{
struct tcx_par *par = (struct tcx_par *)info->par;
const char *tcx_name;
if (par->lowdepth)
tcx_name = "TCX8";
else
tcx_name = "TCX24";
strlcpy(info->fix.id, tcx_name, sizeof(info->fix.id));
info->fix.type = FB_TYPE_PACKED_PIXELS;
info->fix.visual = FB_VISUAL_PSEUDOCOLOR;
info->fix.line_length = linebytes;
info->fix.accel = FB_ACCEL_SUN_TCX;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| David S. Miller | 80 | 80.00% | 1 | 20.00% |
| Linus Torvalds (pre-git) | 14 | 14.00% | 1 | 20.00% |
| Rob Radez | 3 | 3.00% | 1 | 20.00% |
| James Simmons | 2 | 2.00% | 1 | 20.00% |
| Benjamin Collins | 1 | 1.00% | 1 | 20.00% |
| Total | 100 | 100.00% | 5 | 100.00% |
static void tcx_unmap_regs(struct platform_device *op, struct fb_info *info,
struct tcx_par *par)
{
if (par->tec)
of_iounmap(&op->resource[7],
par->tec, sizeof(struct tcx_tec));
if (par->thc)
of_iounmap(&op->resource[9],
par->thc, sizeof(struct tcx_thc));
if (par->bt)
of_iounmap(&op->resource[8],
par->bt, sizeof(struct bt_regs));
if (par->cplane)
of_iounmap(&op->resource[4],
par->cplane, info->fix.smem_len * sizeof(u32));
if (info->screen_base)
of_iounmap(&op->resource[0],
info->screen_base, info->fix.smem_len);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| David S. Miller | 152 | 94.41% | 4 | 66.67% |
| Krzysztof Helt | 8 | 4.97% | 1 | 16.67% |
| Grant C. Likely | 1 | 0.62% | 1 | 16.67% |
| Total | 161 | 100.00% | 6 | 100.00% |
static int tcx_probe(struct platform_device *op)
{
struct device_node *dp = op->dev.of_node;
struct fb_info *info;
struct tcx_par *par;
int linebytes, i, err;
info = framebuffer_alloc(sizeof(struct tcx_par), &op->dev);
err = -ENOMEM;
if (!info)
goto out_err;
par = info->par;
spin_lock_init(&par->lock);
par->lowdepth =
(of_find_property(dp, "tcx-8-bit", NULL) != NULL);
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->tec = of_ioremap(&op->resource[7], 0,
sizeof(struct tcx_tec), "tcx tec");
par->thc = of_ioremap(&op->resource[9], 0,
sizeof(struct tcx_thc), "tcx thc");
par->bt = of_ioremap(&op->resource[8], 0,
sizeof(struct bt_regs), "tcx dac");
info->screen_base = of_ioremap(&op->resource[0], 0,
info->fix.smem_len, "tcx ram");
if (!par->tec || !par->thc ||
!par->bt || !info->screen_base)
goto out_unmap_regs;
memcpy(&par->mmap_map, &__tcx_mmap_map, sizeof(par->mmap_map));
if (!par->lowdepth) {
par->cplane = of_ioremap(&op->resource[4], 0,
info->fix.smem_len * sizeof(u32),
"tcx cplane");
if (!par->cplane)
goto out_unmap_regs;
} else {
par->mmap_map[1].size = SBUS_MMAP_EMPTY;
par->mmap_map[4].size = SBUS_MMAP_EMPTY;
par->mmap_map[5].size = SBUS_MMAP_EMPTY;
par->mmap_map[6].size = SBUS_MMAP_EMPTY;
}
info->fix.smem_start = op->resource[0].start;
par->which_io = op->resource[0].flags & IORESOURCE_BITS;
for (i = 0; i < TCX_MMAP_ENTRIES; i++) {
int j;
switch (i) {
case 10:
j = 12;
break;
case 11: case 12:
j = i - 1;
break;
default:
j = i;
break;
}
par->mmap_map[i].poff = op->resource[j].start;
}
info->flags = FBINFO_DEFAULT;
info->fbops = &tcx_ops;
/* Initialize brooktree DAC. */
sbus_writel(0x04 << 24, &par->bt->addr); /* color planes */
sbus_writel(0xff << 24, &par->bt->control);
sbus_writel(0x05 << 24, &par->bt->addr);
sbus_writel(0x00 << 24, &par->bt->control);
sbus_writel(0x06 << 24, &par->bt->addr); /* overlay plane */
sbus_writel(0x73 << 24, &par->bt->control);
sbus_writel(0x07 << 24, &par->bt->addr);
sbus_writel(0x00 << 24, &par->bt->control);
tcx_reset(info);
tcx_blank(FB_BLANK_UNBLANK, info);
if (fb_alloc_cmap(&info->cmap, 256, 0))
goto out_unmap_regs;
fb_set_cmap(&info->cmap, info);
tcx_init_fix(info, linebytes);
err = register_framebuffer(info);
if (err < 0)
goto out_dealloc_cmap;
dev_set_drvdata(&op->dev, info);
printk(KERN_INFO "%s: TCX at %lx:%lx, %s\n",
dp->full_name,
par->which_io,
info->fix.smem_start,
par->lowdepth ? "8-bit only" : "24-bit depth");
return 0;
out_dealloc_cmap:
fb_dealloc_cmap(&info->cmap);
out_unmap_regs:
tcx_unmap_regs(op, info, par);
framebuffer_release(info);
out_err:
return err;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| David S. Miller | 377 | 48.77% | 3 | 17.65% |
| Linus Torvalds (pre-git) | 319 | 41.27% | 3 | 17.65% |
| Tom 'spot' Callaway | 36 | 4.66% | 1 | 5.88% |
| Krzysztof Helt | 20 | 2.59% | 1 | 5.88% |
| Robert Reif | 9 | 1.16% | 3 | 17.65% |
| Axel Lin | 5 | 0.65% | 1 | 5.88% |
| Anatolij Gustschin | 3 | 0.39% | 1 | 5.88% |
| Hareesh Nagarajan | 1 | 0.13% | 1 | 5.88% |
| Antonino A. Daplas | 1 | 0.13% | 1 | 5.88% |
| Grant C. Likely | 1 | 0.13% | 1 | 5.88% |
| James Simmons | 1 | 0.13% | 1 | 5.88% |
| Total | 773 | 100.00% | 17 | 100.00% |
static int tcx_remove(struct platform_device *op)
{
struct fb_info *info = dev_get_drvdata(&op->dev);
struct tcx_par *par = info->par;
unregister_framebuffer(info);
fb_dealloc_cmap(&info->cmap);
tcx_unmap_regs(op, info, par);
framebuffer_release(info);
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| David S. Miller | 59 | 93.65% | 4 | 66.67% |
| Linus Torvalds (pre-git) | 3 | 4.76% | 1 | 16.67% |
| Grant C. Likely | 1 | 1.59% | 1 | 16.67% |
| Total | 63 | 100.00% | 6 | 100.00% |
static const struct of_device_id tcx_match[] = {
{
.name = "SUNW,tcx",
},
{},
};
MODULE_DEVICE_TABLE(of, tcx_match);
static struct platform_driver tcx_driver = {
.driver = {
.name = "tcx",
.of_match_table = tcx_match,
},
.probe = tcx_probe,
.remove = tcx_remove,
};
static int __init tcx_init(void)
{
if (fb_get_options("tcxfb", NULL))
return -ENODEV;
return platform_driver_register(&tcx_driver);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| David S. Miller | 25 | 86.21% | 2 | 40.00% |
| Linus Torvalds (pre-git) | 2 | 6.90% | 1 | 20.00% |
| Grant C. Likely | 1 | 3.45% | 1 | 20.00% |
| Robert Reif | 1 | 3.45% | 1 | 20.00% |
| Total | 29 | 100.00% | 5 | 100.00% |
static void __exit tcx_exit(void)
{
platform_driver_unregister(&tcx_driver);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| David S. Miller | 12 | 80.00% | 1 | 25.00% |
| Grant C. Likely | 1 | 6.67% | 1 | 25.00% |
| Robert Reif | 1 | 6.67% | 1 | 25.00% |
| Linus Torvalds (pre-git) | 1 | 6.67% | 1 | 25.00% |
| Total | 15 | 100.00% | 4 | 100.00% |
module_init(tcx_init);
module_exit(tcx_exit);
MODULE_DESCRIPTION("framebuffer driver for TCX chipsets");
MODULE_AUTHOR("David S. Miller <davem@davemloft.net>");
MODULE_VERSION("2.0");
MODULE_LICENSE("GPL");
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| David S. Miller | 1356 | 56.41% | 7 | 20.00% |
| Linus Torvalds (pre-git) | 758 | 31.53% | 3 | 8.57% |
| Art Haas | 81 | 3.37% | 1 | 2.86% |
| Tom 'spot' Callaway | 78 | 3.24% | 1 | 2.86% |
| Krzysztof Helt | 56 | 2.33% | 1 | 2.86% |
| Christoph Hellwig | 15 | 0.62% | 2 | 5.71% |
| Robert Reif | 13 | 0.54% | 5 | 14.29% |
| Grant C. Likely | 12 | 0.50% | 3 | 8.57% |
| Al Viro | 8 | 0.33% | 2 | 5.71% |
| Antonino A. Daplas | 5 | 0.21% | 2 | 5.71% |
| Linus Torvalds | 5 | 0.21% | 1 | 2.86% |
| Axel Lin | 5 | 0.21% | 1 | 2.86% |
| James Simmons | 4 | 0.17% | 2 | 5.71% |
| Rob Radez | 3 | 0.12% | 1 | 2.86% |
| Anatolij Gustschin | 3 | 0.12% | 1 | 2.86% |
| Benjamin Collins | 1 | 0.04% | 1 | 2.86% |
| Hareesh Nagarajan | 1 | 0.04% | 1 | 2.86% |
| Total | 2404 | 100.00% | 35 | 100.00% |
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