Release 4.7 drivers/video/fbdev/pmag-ba-fb.c
/*
* linux/drivers/video/pmag-ba-fb.c
*
* PMAG-BA TURBOchannel Color Frame Buffer (CFB) card support,
* derived from:
* "HP300 Topcat framebuffer support (derived from macfb of all things)
* Phil Blundell <philb@gnu.org> 1998", the original code can be
* found in the file hpfb.c in the same directory.
*
* Based on digital document:
* "PMAG-BA TURBOchannel Color Frame Buffer
* Functional Specification", Revision 1.2, August 27, 1990
*
* DECstation related code Copyright (C) 1999, 2000, 2001 by
* Michael Engel <engel@unix-ag.org>,
* Karsten Merker <merker@linuxtag.org> and
* Harald Koerfgen.
* Copyright (c) 2005, 2006 Maciej W. Rozycki
* Copyright (c) 2005 James Simmons
*
* This file is subject to the terms and conditions of the GNU General
* Public License. See the file COPYING in the main directory of this
* archive for more details.
*/
#include <linux/compiler.h>
#include <linux/errno.h>
#include <linux/fb.h>
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/tc.h>
#include <linux/types.h>
#include <asm/io.h>
#include <video/pmag-ba-fb.h>
struct pmagbafb_par {
volatile void __iomem *mmio;
volatile u32 __iomem *dac;
};
static struct fb_var_screeninfo pmagbafb_defined = {
.xres = 1024,
.yres = 864,
.xres_virtual = 1024,
.yres_virtual = 864,
.bits_per_pixel = 8,
.red.length = 8,
.green.length = 8,
.blue.length = 8,
.activate = FB_ACTIVATE_NOW,
.height = -1,
.width = -1,
.accel_flags = FB_ACCEL_NONE,
.pixclock = 14452,
.left_margin = 116,
.right_margin = 12,
.upper_margin = 34,
.lower_margin = 0,
.hsync_len = 128,
.vsync_len = 3,
.sync = FB_SYNC_ON_GREEN,
.vmode = FB_VMODE_NONINTERLACED,
};
static struct fb_fix_screeninfo pmagbafb_fix = {
.id = "PMAG-BA",
.smem_len = (1024 * 1024),
.type = FB_TYPE_PACKED_PIXELS,
.visual = FB_VISUAL_PSEUDOCOLOR,
.line_length = 1024,
.mmio_len = PMAG_BA_SIZE - PMAG_BA_BT459,
};
static inline void dac_write(struct pmagbafb_par *par, unsigned int reg, u8 v)
{
writeb(v, par->dac + reg / 4);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| ralf baechle | ralf baechle | 24 | 75.00% | 1 | 33.33% |
| james simmons | james simmons | 5 | 15.62% | 1 | 33.33% |
| linus torvalds | linus torvalds | 3 | 9.38% | 1 | 33.33% |
| Total | 32 | 100.00% | 3 | 100.00% |
static inline u8 dac_read(struct pmagbafb_par *par, unsigned int reg)
{
return readb(par->dac + reg / 4);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| ralf baechle | ralf baechle | 26 | 92.86% | 1 | 33.33% |
| james simmons | james simmons | 1 | 3.57% | 1 | 33.33% |
| linus torvalds | linus torvalds | 1 | 3.57% | 1 | 33.33% |
| Total | 28 | 100.00% | 3 | 100.00% |
/*
* Set the palette.
*/
static int pmagbafb_setcolreg(unsigned int regno, unsigned int red,
unsigned int green, unsigned int blue,
unsigned int transp, struct fb_info *info)
{
struct pmagbafb_par *par = info->par;
if (regno >= info->cmap.len)
return 1;
red >>= 8; /* The cmap fields are 16 bits */
green >>= 8; /* wide, but the hardware colormap */
blue >>= 8; /* registers are only 8 bits wide */
mb();
dac_write(par, BT459_ADDR_LO, regno);
dac_write(par, BT459_ADDR_HI, 0x00);
wmb();
dac_write(par, BT459_CMAP, red);
wmb();
dac_write(par, BT459_CMAP, green);
wmb();
dac_write(par, BT459_CMAP, blue);
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| ralf baechle | ralf baechle | 56 | 43.75% | 1 | 20.00% |
| james simmons | james simmons | 55 | 42.97% | 2 | 40.00% |
| linus torvalds | linus torvalds | 11 | 8.59% | 1 | 20.00% |
| krzysztof helt | krzysztof helt | 6 | 4.69% | 1 | 20.00% |
| Total | 128 | 100.00% | 5 | 100.00% |
static struct fb_ops pmagbafb_ops = {
.owner = THIS_MODULE,
.fb_setcolreg = pmagbafb_setcolreg,
.fb_fillrect = cfb_fillrect,
.fb_copyarea = cfb_copyarea,
.fb_imageblit = cfb_imageblit,
};
/*
* Turn the hardware cursor off.
*/
static void __init pmagbafb_erase_cursor(struct fb_info *info)
{
struct pmagbafb_par *par = info->par;
mb();
dac_write(par, BT459_ADDR_LO, 0x00);
dac_write(par, BT459_ADDR_HI, 0x03);
wmb();
dac_write(par, BT459_DATA, 0x00);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| ralf baechle | ralf baechle | 42 | 77.78% | 2 | 40.00% |
| james simmons | james simmons | 8 | 14.81% | 2 | 40.00% |
| linus torvalds | linus torvalds | 4 | 7.41% | 1 | 20.00% |
| Total | 54 | 100.00% | 5 | 100.00% |
static int pmagbafb_probe(struct device *dev)
{
struct tc_dev *tdev = to_tc_dev(dev);
resource_size_t start, len;
struct fb_info *info;
struct pmagbafb_par *par;
int err;
info = framebuffer_alloc(sizeof(struct pmagbafb_par), dev);
if (!info) {
printk(KERN_ERR "%s: Cannot allocate memory\n", dev_name(dev));
return -ENOMEM;
}
par = info->par;
dev_set_drvdata(dev, info);
if (fb_alloc_cmap(&info->cmap, 256, 0) < 0) {
printk(KERN_ERR "%s: Cannot allocate color map\n",
dev_name(dev));
err = -ENOMEM;
goto err_alloc;
}
info->fbops = &pmagbafb_ops;
info->fix = pmagbafb_fix;
info->var = pmagbafb_defined;
info->flags = FBINFO_DEFAULT;
/* Request the I/O MEM resource. */
start = tdev->resource.start;
len = tdev->resource.end - start + 1;
if (!request_mem_region(start, len, dev_name(dev))) {
printk(KERN_ERR "%s: Cannot reserve FB region\n",
dev_name(dev));
err = -EBUSY;
goto err_cmap;
}
/* MMIO mapping setup. */
info->fix.mmio_start = start;
par->mmio = ioremap_nocache(info->fix.mmio_start, info->fix.mmio_len);
if (!par->mmio) {
printk(KERN_ERR "%s: Cannot map MMIO\n", dev_name(dev));
err = -ENOMEM;
goto err_resource;
}
par->dac = par->mmio + PMAG_BA_BT459;
/* Frame buffer mapping setup. */
info->fix.smem_start = start + PMAG_BA_FBMEM;
info->screen_base = ioremap_nocache(info->fix.smem_start,
info->fix.smem_len);
if (!info->screen_base) {
printk(KERN_ERR "%s: Cannot map FB\n", dev_name(dev));
err = -ENOMEM;
goto err_mmio_map;
}
info->screen_size = info->fix.smem_len;
pmagbafb_erase_cursor(info);
err = register_framebuffer(info);
if (err < 0) {
printk(KERN_ERR "%s: Cannot register framebuffer\n",
dev_name(dev));
goto err_smem_map;
}
get_device(dev);
fb_info(info, "%s frame buffer device at %s\n",
info->fix.id, dev_name(dev));
return 0;
err_smem_map:
iounmap(info->screen_base);
err_mmio_map:
iounmap(par->mmio);
err_resource:
release_mem_region(start, len);
err_cmap:
fb_dealloc_cmap(&info->cmap);
err_alloc:
framebuffer_release(info);
return err;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| ralf baechle | ralf baechle | 204 | 45.64% | 1 | 11.11% |
| maciej w. rozycki | maciej w. rozycki | 169 | 37.81% | 2 | 22.22% |
| james simmons | james simmons | 25 | 5.59% | 3 | 33.33% |
| kay sievers | kay sievers | 24 | 5.37% | 1 | 11.11% |
| linus torvalds | linus torvalds | 22 | 4.92% | 1 | 11.11% |
| joe perches | joe perches | 3 | 0.67% | 1 | 11.11% |
| Total | 447 | 100.00% | 9 | 100.00% |
static int __exit pmagbafb_remove(struct device *dev)
{
struct tc_dev *tdev = to_tc_dev(dev);
struct fb_info *info = dev_get_drvdata(dev);
struct pmagbafb_par *par = info->par;
resource_size_t start, len;
put_device(dev);
unregister_framebuffer(info);
iounmap(info->screen_base);
iounmap(par->mmio);
start = tdev->resource.start;
len = tdev->resource.end - start + 1;
release_mem_region(start, len);
fb_dealloc_cmap(&info->cmap);
framebuffer_release(info);
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| maciej w. rozycki | maciej w. rozycki | 59 | 52.21% | 1 | 50.00% |
| ralf baechle | ralf baechle | 54 | 47.79% | 1 | 50.00% |
| Total | 113 | 100.00% | 2 | 100.00% |
/*
* Initialize the framebuffer.
*/
static const struct tc_device_id pmagbafb_tc_table[] = {
{ "DEC ", "PMAG-BA " },
{ }
};
MODULE_DEVICE_TABLE(tc, pmagbafb_tc_table);
static struct tc_driver pmagbafb_driver = {
.id_table = pmagbafb_tc_table,
.driver = {
.name = "pmagbafb",
.bus = &tc_bus_type,
.probe = pmagbafb_probe,
.remove = __exit_p(pmagbafb_remove),
},
};
static int __init pmagbafb_init(void)
{
#ifndef MODULE
if (fb_get_options("pmagbafb", NULL))
return -ENXIO;
#endif
return tc_register_driver(&pmagbafb_driver);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| linus torvalds | linus torvalds | 12 | 35.29% | 1 | 20.00% |
| antonino daplas | antonino daplas | 10 | 29.41% | 1 | 20.00% |
| maciej w. rozycki | maciej w. rozycki | 9 | 26.47% | 1 | 20.00% |
| ralf baechle | ralf baechle | 2 | 5.88% | 1 | 20.00% |
| james simmons | james simmons | 1 | 2.94% | 1 | 20.00% |
| Total | 34 | 100.00% | 5 | 100.00% |
static void __exit pmagbafb_exit(void)
{
tc_unregister_driver(&pmagbafb_driver);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| ralf baechle | ralf baechle | 8 | 53.33% | 1 | 33.33% |
| maciej w. rozycki | maciej w. rozycki | 5 | 33.33% | 1 | 33.33% |
| linus torvalds | linus torvalds | 2 | 13.33% | 1 | 33.33% |
| Total | 15 | 100.00% | 3 | 100.00% |
module_init(pmagbafb_init);
module_exit(pmagbafb_exit);
MODULE_LICENSE("GPL");
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| ralf baechle | ralf baechle | 491 | 41.72% | 2 | 11.11% |
| maciej w. rozycki | maciej w. rozycki | 313 | 26.59% | 3 | 16.67% |
| james simmons | james simmons | 207 | 17.59% | 6 | 33.33% |
| linus torvalds | linus torvalds | 118 | 10.03% | 2 | 11.11% |
| kay sievers | kay sievers | 24 | 2.04% | 1 | 5.56% |
| antonino daplas | antonino daplas | 15 | 1.27% | 2 | 11.11% |
| krzysztof helt | krzysztof helt | 6 | 0.51% | 1 | 5.56% |
| joe perches | joe perches | 3 | 0.25% | 1 | 5.56% |
| greg kroah-hartman | greg kroah-hartman | | 0.00% | 0 | 0.00% |
| Total | 1177 | 100.00% | 18 | 100.00% |
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