2 * framebuffer driver for Intel Based Mac's
4 * (c) 2006 Edgar Hucek <gimli@dark-green.com>
5 * Original imac driver written by Gerd Knorr <kraxel@goldbach.in-berlin.de>
9 #include <linux/delay.h>
10 #include <linux/errno.h>
12 #include <linux/kernel.h>
13 #include <linux/init.h>
14 #include <linux/ioport.h>
16 #include <linux/module.h>
17 #include <linux/platform_device.h>
18 #include <linux/slab.h>
19 #include <linux/string.h>
20 #include <linux/tty.h>
24 #include <video/vga.h>
26 typedef enum _MAC_TYPE
{
34 /* --------------------------------------------------------------------- */
36 static struct fb_var_screeninfo imacfb_defined __initdata
= {
37 .activate
= FB_ACTIVATE_NOW
,
44 .vmode
= FB_VMODE_NONINTERLACED
,
47 static struct fb_fix_screeninfo imacfb_fix __initdata
= {
49 .type
= FB_TYPE_PACKED_PIXELS
,
50 .accel
= FB_ACCEL_NONE
,
51 .visual
= FB_VISUAL_TRUECOLOR
,
55 static int model
= M_NEW
;
56 static int manual_height
;
57 static int manual_width
;
59 #define DEFAULT_FB_MEM 1024*1024*16
61 /* --------------------------------------------------------------------- */
63 static int imacfb_setcolreg(unsigned regno
, unsigned red
, unsigned green
,
64 unsigned blue
, unsigned transp
,
68 * Set a single color register. The values supplied are
69 * already rounded down to the hardware's capabilities
70 * (according to the entries in the `var' structure). Return
71 * != 0 for invalid regno.
74 if (regno
>= info
->cmap
.len
)
81 ((u32
*)(info
->pseudo_palette
))[regno
] =
82 (red
<< info
->var
.red
.offset
) |
83 (green
<< info
->var
.green
.offset
) |
84 (blue
<< info
->var
.blue
.offset
);
89 static struct fb_ops imacfb_ops
= {
91 .fb_setcolreg
= imacfb_setcolreg
,
92 .fb_fillrect
= cfb_fillrect
,
93 .fb_copyarea
= cfb_copyarea
,
94 .fb_imageblit
= cfb_imageblit
,
97 static int __init
imacfb_setup(char *options
)
101 if (!options
|| !*options
)
104 while ((this_opt
= strsep(&options
, ",")) != NULL
) {
105 if (!*this_opt
) continue;
107 if (!strcmp(this_opt
, "inverse"))
109 else if (!strcmp(this_opt
, "i17"))
111 else if (!strcmp(this_opt
, "i20"))
113 else if (!strcmp(this_opt
, "mini"))
115 else if (!strcmp(this_opt
, "macbook"))
117 else if (!strncmp(this_opt
, "height:", 7))
118 manual_height
= simple_strtoul(this_opt
+7, NULL
, 0);
119 else if (!strncmp(this_opt
, "width:", 6))
120 manual_width
= simple_strtoul(this_opt
+6, NULL
, 0);
125 static int __init
imacfb_probe(struct platform_device
*dev
)
127 struct fb_info
*info
;
129 unsigned int size_vmode
;
130 unsigned int size_remap
;
131 unsigned int size_total
;
133 screen_info
.lfb_depth
= 32;
134 screen_info
.lfb_size
= DEFAULT_FB_MEM
/ 0x10000;
136 screen_info
.blue_size
= 8;
137 screen_info
.blue_pos
= 0;
138 screen_info
.green_size
= 8;
139 screen_info
.green_pos
= 8;
140 screen_info
.red_size
= 8;
141 screen_info
.red_pos
= 16;
142 screen_info
.rsvd_size
= 8;
143 screen_info
.rsvd_pos
= 24;
147 screen_info
.lfb_width
= 1440;
148 screen_info
.lfb_height
= 900;
149 screen_info
.lfb_linelength
= 1472 * 4;
150 screen_info
.lfb_base
= 0x80010000;
154 screen_info
.lfb_width
= 1680;
155 screen_info
.lfb_height
= 1050;
156 screen_info
.lfb_linelength
= 1728 * 4;
157 screen_info
.lfb_base
= 0x80010000;
160 screen_info
.lfb_width
= 1024;
161 screen_info
.lfb_height
= 768;
162 screen_info
.lfb_linelength
= 2048 * 4;
163 screen_info
.lfb_base
= 0x80000000;
166 screen_info
.lfb_width
= 1280;
167 screen_info
.lfb_height
= 800;
168 screen_info
.lfb_linelength
= 2048 * 4;
169 screen_info
.lfb_base
= 0x80000000;
173 /* if the user wants to manually specify height/width,
174 we will override the defaults */
175 /* TODO: eventually get auto-detection working */
176 if (manual_height
> 0)
177 screen_info
.lfb_height
= manual_height
;
178 if (manual_width
> 0)
179 screen_info
.lfb_width
= manual_width
;
181 imacfb_fix
.smem_start
= screen_info
.lfb_base
;
182 imacfb_defined
.bits_per_pixel
= screen_info
.lfb_depth
;
183 imacfb_defined
.xres
= screen_info
.lfb_width
;
184 imacfb_defined
.yres
= screen_info
.lfb_height
;
185 imacfb_fix
.line_length
= screen_info
.lfb_linelength
;
187 /* size_vmode -- that is the amount of memory needed for the
188 * used video mode, i.e. the minimum amount of
190 size_vmode
= imacfb_defined
.yres
* imacfb_fix
.line_length
;
192 /* size_total -- all video memory we have. Used for
193 * entries, ressource allocation and bounds
195 size_total
= screen_info
.lfb_size
* 65536;
196 if (size_total
< size_vmode
)
197 size_total
= size_vmode
;
199 /* size_remap -- the amount of video memory we are going to
200 * use for imacfb. With modern cards it is no
201 * option to simply use size_total as that
202 * wastes plenty of kernel address space. */
203 size_remap
= size_vmode
* 2;
204 if (size_remap
< size_vmode
)
205 size_remap
= size_vmode
;
206 if (size_remap
> size_total
)
207 size_remap
= size_total
;
208 imacfb_fix
.smem_len
= size_remap
;
211 screen_info
.imacpm_seg
= 0;
214 if (!request_mem_region(imacfb_fix
.smem_start
, size_total
, "imacfb")) {
216 "imacfb: cannot reserve video memory at 0x%lx\n",
217 imacfb_fix
.smem_start
);
218 /* We cannot make this fatal. Sometimes this comes from magic
219 spaces our resource handlers simply don't know about */
222 info
= framebuffer_alloc(sizeof(u32
) * 16, &dev
->dev
);
225 goto err_release_mem
;
227 info
->pseudo_palette
= info
->par
;
230 info
->screen_base
= ioremap(imacfb_fix
.smem_start
, imacfb_fix
.smem_len
);
231 if (!info
->screen_base
) {
232 printk(KERN_ERR
"imacfb: abort, cannot ioremap video memory "
234 imacfb_fix
.smem_len
, imacfb_fix
.smem_start
);
239 printk(KERN_INFO
"imacfb: framebuffer at 0x%lx, mapped to 0x%p, "
240 "using %dk, total %dk\n",
241 imacfb_fix
.smem_start
, info
->screen_base
,
242 size_remap
/1024, size_total
/1024);
243 printk(KERN_INFO
"imacfb: mode is %dx%dx%d, linelength=%d, pages=%d\n",
244 imacfb_defined
.xres
, imacfb_defined
.yres
,
245 imacfb_defined
.bits_per_pixel
, imacfb_fix
.line_length
,
248 imacfb_defined
.xres_virtual
= imacfb_defined
.xres
;
249 imacfb_defined
.yres_virtual
= imacfb_fix
.smem_len
/
250 imacfb_fix
.line_length
;
251 printk(KERN_INFO
"imacfb: scrolling: redraw\n");
252 imacfb_defined
.yres_virtual
= imacfb_defined
.yres
;
254 /* some dummy values for timing to make fbset happy */
255 imacfb_defined
.pixclock
= 10000000 / imacfb_defined
.xres
*
256 1000 / imacfb_defined
.yres
;
257 imacfb_defined
.left_margin
= (imacfb_defined
.xres
/ 8) & 0xf8;
258 imacfb_defined
.hsync_len
= (imacfb_defined
.xres
/ 8) & 0xf8;
260 imacfb_defined
.red
.offset
= screen_info
.red_pos
;
261 imacfb_defined
.red
.length
= screen_info
.red_size
;
262 imacfb_defined
.green
.offset
= screen_info
.green_pos
;
263 imacfb_defined
.green
.length
= screen_info
.green_size
;
264 imacfb_defined
.blue
.offset
= screen_info
.blue_pos
;
265 imacfb_defined
.blue
.length
= screen_info
.blue_size
;
266 imacfb_defined
.transp
.offset
= screen_info
.rsvd_pos
;
267 imacfb_defined
.transp
.length
= screen_info
.rsvd_size
;
269 printk(KERN_INFO
"imacfb: %s: "
270 "size=%d:%d:%d:%d, shift=%d:%d:%d:%d\n",
272 screen_info
.rsvd_size
,
273 screen_info
.red_size
,
274 screen_info
.green_size
,
275 screen_info
.blue_size
,
276 screen_info
.rsvd_pos
,
278 screen_info
.green_pos
,
279 screen_info
.blue_pos
);
281 imacfb_fix
.ypanstep
= 0;
282 imacfb_fix
.ywrapstep
= 0;
284 /* request failure does not faze us, as vgacon probably has this
285 * region already (FIXME) */
286 request_region(0x3c0, 32, "imacfb");
288 info
->fbops
= &imacfb_ops
;
289 info
->var
= imacfb_defined
;
290 info
->fix
= imacfb_fix
;
291 info
->flags
= FBINFO_FLAG_DEFAULT
;
293 if (fb_alloc_cmap(&info
->cmap
, 256, 0) < 0) {
297 if (register_framebuffer(info
)<0) {
301 printk(KERN_INFO
"fb%d: %s frame buffer device\n",
302 info
->node
, info
->fix
.id
);
306 fb_dealloc_cmap(&info
->cmap
);
308 iounmap(info
->screen_base
);
309 framebuffer_release(info
);
311 release_mem_region(imacfb_fix
.smem_start
, size_total
);
315 static struct platform_driver imacfb_driver
= {
316 .probe
= imacfb_probe
,
322 static struct platform_device imacfb_device
= {
326 static int __init
imacfb_init(void)
331 /* ignore error return of fb_get_options */
332 fb_get_options("imacfb", &option
);
333 imacfb_setup(option
);
334 ret
= platform_driver_register(&imacfb_driver
);
337 ret
= platform_device_register(&imacfb_device
);
339 platform_driver_unregister(&imacfb_driver
);
343 module_init(imacfb_init
);
345 MODULE_LICENSE("GPL");