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-rw-r--r--drivers/video/Kconfig9
-rw-r--r--drivers/video/Makefile1
-rw-r--r--drivers/video/imacfb.c345
3 files changed, 355 insertions, 0 deletions
diff --git a/drivers/video/Kconfig b/drivers/video/Kconfig
index 2a265e1c7cbc..17de4c84db69 100644
--- a/drivers/video/Kconfig
+++ b/drivers/video/Kconfig
@@ -550,6 +550,15 @@ config FB_VESA
550 You will get a boot time penguin logo at no additional cost. Please 550 You will get a boot time penguin logo at no additional cost. Please
551 read <file:Documentation/fb/vesafb.txt>. If unsure, say Y. 551 read <file:Documentation/fb/vesafb.txt>. If unsure, say Y.
552 552
553config FB_IMAC
554 bool "Intel-based Macintosh Framebuffer Support"
555 depends on (FB = y) && X86
556 select FB_CFB_FILLRECT
557 select FB_CFB_COPYAREA
558 select FB_CFB_IMAGEBLIT
559 help
560 This is the frame buffer device driver for the Intel-based Macintosh
561
553config FB_HGA 562config FB_HGA
554 tristate "Hercules mono graphics support" 563 tristate "Hercules mono graphics support"
555 depends on FB && X86 564 depends on FB && X86
diff --git a/drivers/video/Makefile b/drivers/video/Makefile
index 23de3b2c7856..b7dfee209cd0 100644
--- a/drivers/video/Makefile
+++ b/drivers/video/Makefile
@@ -97,6 +97,7 @@ obj-$(CONFIG_FB_S3C2410) += s3c2410fb.o
97 97
98# Platform or fallback drivers go here 98# Platform or fallback drivers go here
99obj-$(CONFIG_FB_VESA) += vesafb.o 99obj-$(CONFIG_FB_VESA) += vesafb.o
100obj-$(CONFIG_FB_IMAC) += imacfb.o
100obj-$(CONFIG_FB_VGA16) += vga16fb.o vgastate.o 101obj-$(CONFIG_FB_VGA16) += vga16fb.o vgastate.o
101obj-$(CONFIG_FB_OF) += offb.o 102obj-$(CONFIG_FB_OF) += offb.o
102 103
diff --git a/drivers/video/imacfb.c b/drivers/video/imacfb.c
new file mode 100644
index 000000000000..7b1c168c834d
--- /dev/null
+++ b/drivers/video/imacfb.c
@@ -0,0 +1,345 @@
1/*
2 * framebuffer driver for Intel Based Mac's
3 *
4 * (c) 2006 Edgar Hucek <gimli@dark-green.com>
5 * Original imac driver written by Gerd Knorr <kraxel@goldbach.in-berlin.de>
6 *
7 */
8
9#include <linux/delay.h>
10#include <linux/errno.h>
11#include <linux/fb.h>
12#include <linux/kernel.h>
13#include <linux/init.h>
14#include <linux/ioport.h>
15#include <linux/mm.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>
21
22#include <asm/io.h>
23
24#include <video/vga.h>
25
26typedef enum _MAC_TYPE {
27 M_I17,
28 M_I20,
29 M_MINI,
30 M_MACBOOK,
31 M_NEW
32} MAC_TYPE;
33
34/* --------------------------------------------------------------------- */
35
36static struct fb_var_screeninfo imacfb_defined __initdata = {
37 .activate = FB_ACTIVATE_NOW,
38 .height = -1,
39 .width = -1,
40 .right_margin = 32,
41 .upper_margin = 16,
42 .lower_margin = 4,
43 .vsync_len = 4,
44 .vmode = FB_VMODE_NONINTERLACED,
45};
46
47static struct fb_fix_screeninfo imacfb_fix __initdata = {
48 .id = "IMAC VGA",
49 .type = FB_TYPE_PACKED_PIXELS,
50 .accel = FB_ACCEL_NONE,
51 .visual = FB_VISUAL_TRUECOLOR,
52};
53
54static int inverse;
55static int model = M_NEW;
56static int manual_height;
57static int manual_width;
58
59#define DEFAULT_FB_MEM 1024*1024*16
60
61/* --------------------------------------------------------------------- */
62
63static int imacfb_setcolreg(unsigned regno, unsigned red, unsigned green,
64 unsigned blue, unsigned transp,
65 struct fb_info *info)
66{
67 /*
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.
72 */
73
74 if (regno >= info->cmap.len)
75 return 1;
76
77 if (regno < 16) {
78 red >>= 8;
79 green >>= 8;
80 blue >>= 8;
81 ((u32 *)(info->pseudo_palette))[regno] =
82 (red << info->var.red.offset) |
83 (green << info->var.green.offset) |
84 (blue << info->var.blue.offset);
85 }
86 return 0;
87}
88
89static struct fb_ops imacfb_ops = {
90 .owner = THIS_MODULE,
91 .fb_setcolreg = imacfb_setcolreg,
92 .fb_fillrect = cfb_fillrect,
93 .fb_copyarea = cfb_copyarea,
94 .fb_imageblit = cfb_imageblit,
95};
96
97static int __init imacfb_setup(char *options)
98{
99 char *this_opt;
100
101 if (!options || !*options)
102 return 0;
103
104 while ((this_opt = strsep(&options, ",")) != NULL) {
105 if (!*this_opt) continue;
106
107 if (!strcmp(this_opt, "inverse"))
108 inverse = 1;
109 else if (!strcmp(this_opt, "i17"))
110 model = M_I17;
111 else if (!strcmp(this_opt, "i20"))
112 model = M_I20;
113 else if (!strcmp(this_opt, "mini"))
114 model = M_MINI;
115 else if (!strcmp(this_opt, "macbook"))
116 model = M_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);
121 }
122 return 0;
123}
124
125static int __init imacfb_probe(struct platform_device *dev)
126{
127 struct fb_info *info;
128 int err;
129 unsigned int size_vmode;
130 unsigned int size_remap;
131 unsigned int size_total;
132
133 screen_info.lfb_depth = 32;
134 screen_info.lfb_size = DEFAULT_FB_MEM / 0x10000;
135 screen_info.pages=1;
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;
144
145 switch (model) {
146 case M_I17:
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;
151 break;
152 case M_NEW:
153 case M_I20:
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;
158 break;
159 case M_MINI:
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;
164 break;
165 case M_MACBOOK:
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;
170 break;
171 }
172
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;
180
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;
186
187 /* size_vmode -- that is the amount of memory needed for the
188 * used video mode, i.e. the minimum amount of
189 * memory we need. */
190 size_vmode = imacfb_defined.yres * imacfb_fix.line_length;
191
192 /* size_total -- all video memory we have. Used for
193 * entries, ressource allocation and bounds
194 * checking. */
195 size_total = screen_info.lfb_size * 65536;
196 if (size_total < size_vmode)
197 size_total = size_vmode;
198
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;
209
210#ifndef __i386__
211 screen_info.imacpm_seg = 0;
212#endif
213
214 if (!request_mem_region(imacfb_fix.smem_start, size_total, "imacfb")) {
215 printk(KERN_WARNING
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 */
220 }
221
222 info = framebuffer_alloc(sizeof(u32) * 16, &dev->dev);
223 if (!info) {
224 err = -ENOMEM;
225 goto err_release_mem;
226 }
227 info->pseudo_palette = info->par;
228 info->par = NULL;
229
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 "
233 "0x%x @ 0x%lx\n",
234 imacfb_fix.smem_len, imacfb_fix.smem_start);
235 err = -EIO;
236 goto err_unmap;
237 }
238
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,
246 screen_info.pages);
247
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;
253
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;
259
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;
268
269 printk(KERN_INFO "imacfb: %s: "
270 "size=%d:%d:%d:%d, shift=%d:%d:%d:%d\n",
271 "Truecolor",
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,
277 screen_info.red_pos,
278 screen_info.green_pos,
279 screen_info.blue_pos);
280
281 imacfb_fix.ypanstep = 0;
282 imacfb_fix.ywrapstep = 0;
283
284 /* request failure does not faze us, as vgacon probably has this
285 * region already (FIXME) */
286 request_region(0x3c0, 32, "imacfb");
287
288 info->fbops = &imacfb_ops;
289 info->var = imacfb_defined;
290 info->fix = imacfb_fix;
291 info->flags = FBINFO_FLAG_DEFAULT;
292
293 if (fb_alloc_cmap(&info->cmap, 256, 0) < 0) {
294 err = -ENOMEM;
295 goto err_unmap;
296 }
297 if (register_framebuffer(info)<0) {
298 err = -EINVAL;
299 goto err_fb_dealoc;
300 }
301 printk(KERN_INFO "fb%d: %s frame buffer device\n",
302 info->node, info->fix.id);
303 return 0;
304
305err_fb_dealoc:
306 fb_dealloc_cmap(&info->cmap);
307err_unmap:
308 iounmap(info->screen_base);
309 framebuffer_release(info);
310err_release_mem:
311 release_mem_region(imacfb_fix.smem_start, size_total);
312 return err;
313}
314
315static struct platform_driver imacfb_driver = {
316 .probe = imacfb_probe,
317 .driver = {
318 .name = "imacfb",
319 },
320};
321
322static struct platform_device imacfb_device = {
323 .name = "imacfb",
324};
325
326static int __init imacfb_init(void)
327{
328 int ret;
329 char *option = NULL;
330
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);
335
336 if (!ret) {
337 ret = platform_device_register(&imacfb_device);
338 if (ret)
339 platform_driver_unregister(&imacfb_driver);
340 }
341 return ret;
342}
343module_init(imacfb_init);
344
345MODULE_LICENSE("GPL");