1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3 * Geode LX framebuffer driver.
4 *
5 * Copyright (C) 2007 Advanced Micro Devices, Inc.
6 * Built from gxfb (which is Copyright (C) 2006 Arcom Control Systems Ltd.)
7 */
8
9 #include <linux/aperture.h>
10 #include <linux/module.h>
11 #include <linux/kernel.h>
12 #include <linux/errno.h>
13 #include <linux/string.h>
14 #include <linux/console.h>
15 #include <linux/mm.h>
16 #include <linux/suspend.h>
17 #include <linux/delay.h>
18 #include <linux/fb.h>
19 #include <linux/init.h>
20 #include <linux/pci.h>
21 #include <linux/uaccess.h>
22
23 #include <asm/olpc.h>
24
25 #include "lxfb.h"
26
27 static char *mode_option;
28 static int noclear, nopanel, nocrt;
29 static int vram;
30 static int vt_switch;
31
32 /* Most of these modes are sorted in ascending order, but
33 * since the first entry in this table is the "default" mode,
34 * we try to make it something sane - 640x480-60 is sane
35 */
36
37 static struct fb_videomode geode_modedb[] = {
38 /* 640x480-60 */
39 { NULL, 60, 640, 480, 39682, 48, 8, 25, 2, 88, 2,
40 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
41 FB_VMODE_NONINTERLACED, 0 },
42 /* 640x400-70 */
43 { NULL, 70, 640, 400, 39770, 40, 8, 28, 5, 96, 2,
44 FB_SYNC_HOR_HIGH_ACT,
45 FB_VMODE_NONINTERLACED, 0 },
46 /* 640x480-70 */
47 { NULL, 70, 640, 480, 35014, 88, 24, 15, 2, 64, 3,
48 0, FB_VMODE_NONINTERLACED, 0 },
49 /* 640x480-72 */
50 { NULL, 72, 640, 480, 32102, 120, 16, 20, 1, 40, 3,
51 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
52 FB_VMODE_NONINTERLACED, 0 },
53 /* 640x480-75 */
54 { NULL, 75, 640, 480, 31746, 120, 16, 16, 1, 64, 3,
55 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
56 FB_VMODE_NONINTERLACED, 0 },
57 /* 640x480-85 */
58 { NULL, 85, 640, 480, 27780, 80, 56, 25, 1, 56, 3,
59 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
60 FB_VMODE_NONINTERLACED, 0 },
61 /* 640x480-90 */
62 { NULL, 90, 640, 480, 26392, 96, 32, 22, 1, 64, 3,
63 0, FB_VMODE_NONINTERLACED, 0 },
64 /* 640x480-100 */
65 { NULL, 100, 640, 480, 23167, 104, 40, 25, 1, 64, 3,
66 0, FB_VMODE_NONINTERLACED, 0 },
67 /* 640x480-60 */
68 { NULL, 60, 640, 480, 39682, 48, 16, 25, 10, 88, 2,
69 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
70 FB_VMODE_NONINTERLACED, 0 },
71 /* 800x600-56 */
72 { NULL, 56, 800, 600, 27901, 128, 24, 22, 1, 72, 2,
73 0, FB_VMODE_NONINTERLACED, 0 },
74 /* 800x600-60 */
75 { NULL, 60, 800, 600, 25131, 72, 32, 23, 1, 136, 4,
76 0, FB_VMODE_NONINTERLACED, 0 },
77 /* 800x600-70 */
78 { NULL, 70, 800, 600, 21873, 120, 40, 21, 4, 80, 3,
79 0, FB_VMODE_NONINTERLACED, 0 },
80 /* 800x600-72 */
81 { NULL, 72, 800, 600, 20052, 64, 56, 23, 37, 120, 6,
82 0, FB_VMODE_NONINTERLACED, 0 },
83 /* 800x600-75 */
84 { NULL, 75, 800, 600, 20202, 160, 16, 21, 1, 80, 3,
85 0, FB_VMODE_NONINTERLACED, 0 },
86 /* 800x600-85 */
87 { NULL, 85, 800, 600, 17790, 152, 32, 27, 1, 64, 3,
88 0, FB_VMODE_NONINTERLACED, 0 },
89 /* 800x600-90 */
90 { NULL, 90, 800, 600, 16648, 128, 40, 28, 1, 88, 3,
91 0, FB_VMODE_NONINTERLACED, 0 },
92 /* 800x600-100 */
93 { NULL, 100, 800, 600, 14667, 136, 48, 27, 1, 88, 3,
94 0, FB_VMODE_NONINTERLACED, 0 },
95 /* 800x600-60 */
96 { NULL, 60, 800, 600, 25131, 88, 40, 23, 1, 128, 4,
97 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
98 FB_VMODE_NONINTERLACED, 0 },
99 /* 1024x768-60 */
100 { NULL, 60, 1024, 768, 15385, 160, 24, 29, 3, 136, 6,
101 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
102 FB_VMODE_NONINTERLACED, 0 },
103 /* 1024x768-70 */
104 { NULL, 70, 1024, 768, 13346, 144, 24, 29, 3, 136, 6,
105 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
106 FB_VMODE_NONINTERLACED, 0 },
107 /* 1024x768-72 */
108 { NULL, 72, 1024, 768, 12702, 168, 56, 29, 4, 112, 3,
109 0, FB_VMODE_NONINTERLACED, 0 },
110 /* 1024x768-75 */
111 { NULL, 75, 1024, 768, 12703, 176, 16, 28, 1, 96, 3,
112 0, FB_VMODE_NONINTERLACED, 0 },
113 /* 1024x768-85 */
114 { NULL, 85, 1024, 768, 10581, 208, 48, 36, 1, 96, 3,
115 0, FB_VMODE_NONINTERLACED, 0 },
116 /* 1024x768-90 */
117 { NULL, 90, 1024, 768, 9981, 176, 64, 37, 1, 112, 3,
118 0, FB_VMODE_NONINTERLACED, 0 },
119 /* 1024x768-100 */
120 { NULL, 100, 1024, 768, 8825, 184, 72, 42, 1, 112, 3,
121 0, FB_VMODE_NONINTERLACED, 0 },
122 /* 1024x768-60 */
123 { NULL, 60, 1024, 768, 15385, 160, 24, 29, 3, 136, 6,
124 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
125 FB_VMODE_NONINTERLACED, 0 },
126 /* 1152x864-60 */
127 { NULL, 60, 1152, 864, 12251, 184, 64, 27, 1, 120, 3,
128 0, FB_VMODE_NONINTERLACED, 0 },
129 /* 1152x864-70 */
130 { NULL, 70, 1152, 864, 10254, 192, 72, 32, 8, 120, 3,
131 0, FB_VMODE_NONINTERLACED, 0 },
132 /* 1152x864-72 */
133 { NULL, 72, 1152, 864, 9866, 200, 72, 33, 7, 128, 3,
134 0, FB_VMODE_NONINTERLACED, 0 },
135 /* 1152x864-75 */
136 { NULL, 75, 1152, 864, 9259, 256, 64, 32, 1, 128, 3,
137 0, FB_VMODE_NONINTERLACED, 0 },
138 /* 1152x864-85 */
139 { NULL, 85, 1152, 864, 8357, 200, 72, 37, 3, 128, 3,
140 0, FB_VMODE_NONINTERLACED, 0 },
141 /* 1152x864-90 */
142 { NULL, 90, 1152, 864, 7719, 208, 80, 42, 9, 128, 3,
143 0, FB_VMODE_NONINTERLACED, 0 },
144 /* 1152x864-100 */
145 { NULL, 100, 1152, 864, 6947, 208, 80, 48, 3, 128, 3,
146 0, FB_VMODE_NONINTERLACED, 0 },
147 /* 1152x864-60 */
148 { NULL, 60, 1152, 864, 12251, 184, 64, 27, 1, 120, 3,
149 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
150 FB_VMODE_NONINTERLACED, 0 },
151 /* 1280x1024-60 */
152 { NULL, 60, 1280, 1024, 9262, 248, 48, 38, 1, 112, 3,
153 0, FB_VMODE_NONINTERLACED, 0 },
154 /* 1280x1024-70 */
155 { NULL, 70, 1280, 1024, 7719, 224, 88, 38, 6, 136, 3,
156 0, FB_VMODE_NONINTERLACED, 0 },
157 /* 1280x1024-72 */
158 { NULL, 72, 1280, 1024, 7490, 224, 88, 39, 7, 136, 3,
159 0, FB_VMODE_NONINTERLACED, 0 },
160 /* 1280x1024-75 */
161 { NULL, 75, 1280, 1024, 7409, 248, 16, 38, 1, 144, 3,
162 0, FB_VMODE_NONINTERLACED, 0 },
163 /* 1280x1024-85 */
164 { NULL, 85, 1280, 1024, 6351, 224, 64, 44, 1, 160, 3,
165 0, FB_VMODE_NONINTERLACED, 0 },
166 /* 1280x1024-90 */
167 { NULL, 90, 1280, 1024, 5791, 240, 96, 51, 12, 144, 3,
168 0, FB_VMODE_NONINTERLACED, 0 },
169 /* 1280x1024-100 */
170 { NULL, 100, 1280, 1024, 5212, 240, 96, 57, 6, 144, 3,
171 0, FB_VMODE_NONINTERLACED, 0 },
172 /* 1280x1024-60 */
173 { NULL, 60, 1280, 1024, 9262, 248, 48, 38, 1, 112, 3,
174 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
175 FB_VMODE_NONINTERLACED, 0 },
176 /* 1600x1200-60 */
177 { NULL, 60, 1600, 1200, 6172, 304, 64, 46, 1, 192, 3,
178 0, FB_VMODE_NONINTERLACED, 0 },
179 /* 1600x1200-70 */
180 { NULL, 70, 1600, 1200, 5291, 304, 64, 46, 1, 192, 3,
181 0, FB_VMODE_NONINTERLACED, 0 },
182 /* 1600x1200-72 */
183 { NULL, 72, 1600, 1200, 5053, 288, 112, 47, 13, 176, 3,
184 0, FB_VMODE_NONINTERLACED, 0 },
185 /* 1600x1200-75 */
186 { NULL, 75, 1600, 1200, 4938, 304, 64, 46, 1, 192, 3,
187 0, FB_VMODE_NONINTERLACED, 0 },
188 /* 1600x1200-85 */
189 { NULL, 85, 1600, 1200, 4357, 304, 64, 46, 1, 192, 3,
190 0, FB_VMODE_NONINTERLACED, 0 },
191 /* 1600x1200-90 */
192 { NULL, 90, 1600, 1200, 3981, 304, 128, 60, 1, 176, 3,
193 0, FB_VMODE_NONINTERLACED, 0 },
194 /* 1600x1200-100 */
195 { NULL, 100, 1600, 1200, 3563, 304, 128, 67, 1, 176, 3,
196 0, FB_VMODE_NONINTERLACED, 0 },
197 /* 1600x1200-60 */
198 { NULL, 60, 1600, 1200, 6172, 304, 64, 46, 1, 192, 3,
199 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
200 FB_VMODE_NONINTERLACED, 0 },
201 /* 1920x1440-60 */
202 { NULL, 60, 1920, 1440, 4273, 344, 128, 56, 1, 208, 3,
203 0, FB_VMODE_NONINTERLACED, 0 },
204 /* 1920x1440-70 */
205 { NULL, 70, 1920, 1440, 3593, 360, 152, 55, 8, 208, 3,
206 0, FB_VMODE_NONINTERLACED, 0 },
207 /* 1920x1440-72 */
208 { NULL, 72, 1920, 1440, 3472, 360, 152, 68, 4, 208, 3,
209 0, FB_VMODE_NONINTERLACED, 0 },
210 /* 1920x1440-75 */
211 { NULL, 75, 1920, 1440, 3367, 352, 144, 56, 1, 224, 3,
212 0, FB_VMODE_NONINTERLACED, 0 },
213 /* 1920x1440-85 */
214 { NULL, 85, 1920, 1440, 2929, 368, 152, 68, 1, 216, 3,
215 0, FB_VMODE_NONINTERLACED, 0 },
216 };
217
218 static struct fb_videomode olpc_dcon_modedb[] = {
219 /* The only mode the DCON has is 1200x900 */
220 { NULL, 50, 1200, 900, 17460, 24, 8, 4, 5, 8, 3,
221 FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
222 FB_VMODE_NONINTERLACED, 0 }
223 };
224
get_modedb(struct fb_videomode ** modedb,unsigned int * size)225 static void get_modedb(struct fb_videomode **modedb, unsigned int *size)
226 {
227 if (olpc_has_dcon()) {
228 *modedb = (struct fb_videomode *) olpc_dcon_modedb;
229 *size = ARRAY_SIZE(olpc_dcon_modedb);
230 } else {
231 *modedb = (struct fb_videomode *) geode_modedb;
232 *size = ARRAY_SIZE(geode_modedb);
233 }
234 }
235
lxfb_check_var(struct fb_var_screeninfo * var,struct fb_info * info)236 static int lxfb_check_var(struct fb_var_screeninfo *var, struct fb_info *info)
237 {
238 if (!var->pixclock)
239 return -EINVAL;
240
241 if (var->xres > 1920 || var->yres > 1440)
242 return -EINVAL;
243
244 if (var->bits_per_pixel == 32) {
245 var->red.offset = 16; var->red.length = 8;
246 var->green.offset = 8; var->green.length = 8;
247 var->blue.offset = 0; var->blue.length = 8;
248 } else if (var->bits_per_pixel == 16) {
249 var->red.offset = 11; var->red.length = 5;
250 var->green.offset = 5; var->green.length = 6;
251 var->blue.offset = 0; var->blue.length = 5;
252 } else if (var->bits_per_pixel == 8) {
253 var->red.offset = 0; var->red.length = 8;
254 var->green.offset = 0; var->green.length = 8;
255 var->blue.offset = 0; var->blue.length = 8;
256 } else
257 return -EINVAL;
258
259 var->transp.offset = 0; var->transp.length = 0;
260
261 /* Enough video memory? */
262 if ((lx_get_pitch(var->xres, var->bits_per_pixel) * var->yres)
263 > info->fix.smem_len)
264 return -EINVAL;
265
266 return 0;
267 }
268
lxfb_set_par(struct fb_info * info)269 static int lxfb_set_par(struct fb_info *info)
270 {
271 if (info->var.bits_per_pixel > 8)
272 info->fix.visual = FB_VISUAL_TRUECOLOR;
273 else
274 info->fix.visual = FB_VISUAL_PSEUDOCOLOR;
275
276 info->fix.line_length = lx_get_pitch(info->var.xres,
277 info->var.bits_per_pixel);
278
279 lx_set_mode(info);
280 return 0;
281 }
282
chan_to_field(u_int chan,struct fb_bitfield * bf)283 static inline u_int chan_to_field(u_int chan, struct fb_bitfield *bf)
284 {
285 chan &= 0xffff;
286 chan >>= 16 - bf->length;
287 return chan << bf->offset;
288 }
289
lxfb_setcolreg(unsigned regno,unsigned red,unsigned green,unsigned blue,unsigned transp,struct fb_info * info)290 static int lxfb_setcolreg(unsigned regno, unsigned red, unsigned green,
291 unsigned blue, unsigned transp,
292 struct fb_info *info)
293 {
294 if (info->var.grayscale) {
295 /* grayscale = 0.30*R + 0.59*G + 0.11*B */
296 red = green = blue = (red * 77 + green * 151 + blue * 28) >> 8;
297 }
298
299 /* Truecolor has hardware independent palette */
300 if (info->fix.visual == FB_VISUAL_TRUECOLOR) {
301 u32 *pal = info->pseudo_palette;
302 u32 v;
303
304 if (regno >= 16)
305 return -EINVAL;
306
307 v = chan_to_field(red, &info->var.red);
308 v |= chan_to_field(green, &info->var.green);
309 v |= chan_to_field(blue, &info->var.blue);
310
311 pal[regno] = v;
312 } else {
313 if (regno >= 256)
314 return -EINVAL;
315
316 lx_set_palette_reg(info, regno, red, green, blue);
317 }
318
319 return 0;
320 }
321
lxfb_blank(int blank_mode,struct fb_info * info)322 static int lxfb_blank(int blank_mode, struct fb_info *info)
323 {
324 return lx_blank_display(info, blank_mode);
325 }
326
327
lxfb_map_video_memory(struct fb_info * info,struct pci_dev * dev)328 static int lxfb_map_video_memory(struct fb_info *info, struct pci_dev *dev)
329 {
330 struct lxfb_par *par = info->par;
331 int ret;
332
333 ret = pci_enable_device(dev);
334
335 if (ret)
336 return ret;
337
338 ret = pci_request_region(dev, 0, "lxfb-framebuffer");
339
340 if (ret)
341 return ret;
342
343 ret = pci_request_region(dev, 1, "lxfb-gp");
344
345 if (ret)
346 return ret;
347
348 ret = pci_request_region(dev, 2, "lxfb-vg");
349
350 if (ret)
351 return ret;
352
353 ret = pci_request_region(dev, 3, "lxfb-vp");
354
355 if (ret)
356 return ret;
357
358 info->fix.smem_start = pci_resource_start(dev, 0);
359 info->fix.smem_len = vram ? vram : lx_framebuffer_size();
360
361 info->screen_base = ioremap(info->fix.smem_start, info->fix.smem_len);
362
363 ret = -ENOMEM;
364
365 if (info->screen_base == NULL)
366 return ret;
367
368 par->gp_regs = pci_ioremap_bar(dev, 1);
369
370 if (par->gp_regs == NULL)
371 return ret;
372
373 par->dc_regs = pci_ioremap_bar(dev, 2);
374
375 if (par->dc_regs == NULL)
376 return ret;
377
378 par->vp_regs = pci_ioremap_bar(dev, 3);
379
380 if (par->vp_regs == NULL)
381 return ret;
382
383 write_dc(par, DC_UNLOCK, DC_UNLOCK_UNLOCK);
384 write_dc(par, DC_GLIU0_MEM_OFFSET, info->fix.smem_start & 0xFF000000);
385 write_dc(par, DC_UNLOCK, DC_UNLOCK_LOCK);
386
387 dev_info(&dev->dev, "%d KB of video memory at 0x%lx\n",
388 info->fix.smem_len / 1024, info->fix.smem_start);
389
390 return 0;
391 }
392
393 static const struct fb_ops lxfb_ops = {
394 .owner = THIS_MODULE,
395 FB_DEFAULT_IOMEM_OPS,
396 .fb_check_var = lxfb_check_var,
397 .fb_set_par = lxfb_set_par,
398 .fb_setcolreg = lxfb_setcolreg,
399 .fb_blank = lxfb_blank,
400 };
401
lxfb_init_fbinfo(struct device * dev)402 static struct fb_info *lxfb_init_fbinfo(struct device *dev)
403 {
404 struct lxfb_par *par;
405 struct fb_info *info;
406
407 /* Alloc enough space for the pseudo palette. */
408 info = framebuffer_alloc(sizeof(struct lxfb_par) + sizeof(u32) * 16,
409 dev);
410 if (!info)
411 return NULL;
412
413 par = info->par;
414
415 strcpy(info->fix.id, "Geode LX");
416
417 info->fix.type = FB_TYPE_PACKED_PIXELS;
418 info->fix.type_aux = 0;
419 info->fix.xpanstep = 0;
420 info->fix.ypanstep = 0;
421 info->fix.ywrapstep = 0;
422 info->fix.accel = FB_ACCEL_NONE;
423
424 info->var.nonstd = 0;
425 info->var.activate = FB_ACTIVATE_NOW;
426 info->var.height = -1;
427 info->var.width = -1;
428 info->var.accel_flags = 0;
429 info->var.vmode = FB_VMODE_NONINTERLACED;
430
431 info->fbops = &lxfb_ops;
432 info->node = -1;
433
434 info->pseudo_palette = (void *)par + sizeof(struct lxfb_par);
435
436 if (fb_alloc_cmap(&info->cmap, 256, 0) < 0) {
437 framebuffer_release(info);
438 return NULL;
439 }
440
441 info->var.grayscale = 0;
442
443 return info;
444 }
445
lxfb_suspend(struct device * dev)446 static int __maybe_unused lxfb_suspend(struct device *dev)
447 {
448 struct fb_info *info = dev_get_drvdata(dev);
449
450 console_lock();
451 lx_powerdown(info);
452 fb_set_suspend(info, 1);
453 console_unlock();
454
455 /* there's no point in setting PCI states; we emulate PCI, so
456 * we don't end up getting power savings anyways */
457
458 return 0;
459 }
460
lxfb_resume(struct device * dev)461 static int __maybe_unused lxfb_resume(struct device *dev)
462 {
463 struct fb_info *info = dev_get_drvdata(dev);
464 int ret;
465
466 console_lock();
467 ret = lx_powerup(info);
468 if (ret) {
469 printk(KERN_ERR "lxfb: power up failed!\n");
470 return ret;
471 }
472
473 fb_set_suspend(info, 0);
474 console_unlock();
475 return 0;
476 }
477
lxfb_probe(struct pci_dev * pdev,const struct pci_device_id * id)478 static int lxfb_probe(struct pci_dev *pdev, const struct pci_device_id *id)
479 {
480 struct lxfb_par *par;
481 struct fb_info *info;
482 int ret;
483
484 struct fb_videomode *modedb_ptr;
485 unsigned int modedb_size;
486
487 ret = aperture_remove_conflicting_pci_devices(pdev, "lxfb");
488 if (ret)
489 return ret;
490
491 info = lxfb_init_fbinfo(&pdev->dev);
492
493 if (info == NULL)
494 return -ENOMEM;
495
496 par = info->par;
497
498 ret = lxfb_map_video_memory(info, pdev);
499
500 if (ret < 0) {
501 dev_err(&pdev->dev,
502 "failed to map frame buffer or controller registers\n");
503 goto err;
504 }
505
506 /* Set up the desired outputs */
507
508 par->output = 0;
509 par->output |= (nopanel) ? 0 : OUTPUT_PANEL;
510 par->output |= (nocrt) ? 0 : OUTPUT_CRT;
511
512 /* Set up the mode database */
513
514 get_modedb(&modedb_ptr, &modedb_size);
515 ret = fb_find_mode(&info->var, info, mode_option,
516 modedb_ptr, modedb_size, NULL, 16);
517
518 if (ret == 0 || ret == 4) {
519 dev_err(&pdev->dev, "could not find valid video mode\n");
520 ret = -EINVAL;
521 goto err;
522 }
523
524 /* Clear the screen of garbage, unless noclear was specified,
525 * in which case we assume the user knows what he is doing */
526
527 if (!noclear)
528 memset_io(info->screen_base, 0, info->fix.smem_len);
529
530 /* Set the mode */
531
532 lxfb_check_var(&info->var, info);
533 lxfb_set_par(info);
534
535 pm_set_vt_switch(vt_switch);
536
537 if (register_framebuffer(info) < 0) {
538 ret = -EINVAL;
539 goto err;
540 }
541 pci_set_drvdata(pdev, info);
542 fb_info(info, "%s frame buffer device\n", info->fix.id);
543
544 return 0;
545
546 err:
547 if (info->screen_base) {
548 iounmap(info->screen_base);
549 pci_release_region(pdev, 0);
550 }
551 if (par->gp_regs) {
552 iounmap(par->gp_regs);
553 pci_release_region(pdev, 1);
554 }
555 if (par->dc_regs) {
556 iounmap(par->dc_regs);
557 pci_release_region(pdev, 2);
558 }
559 if (par->vp_regs) {
560 iounmap(par->vp_regs);
561 pci_release_region(pdev, 3);
562 }
563
564 fb_dealloc_cmap(&info->cmap);
565 framebuffer_release(info);
566
567 return ret;
568 }
569
lxfb_remove(struct pci_dev * pdev)570 static void lxfb_remove(struct pci_dev *pdev)
571 {
572 struct fb_info *info = pci_get_drvdata(pdev);
573 struct lxfb_par *par = info->par;
574
575 unregister_framebuffer(info);
576
577 iounmap(info->screen_base);
578 pci_release_region(pdev, 0);
579
580 iounmap(par->gp_regs);
581 pci_release_region(pdev, 1);
582
583 iounmap(par->dc_regs);
584 pci_release_region(pdev, 2);
585
586 iounmap(par->vp_regs);
587 pci_release_region(pdev, 3);
588
589 fb_dealloc_cmap(&info->cmap);
590 framebuffer_release(info);
591 }
592
593 static struct pci_device_id lxfb_id_table[] = {
594 { PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_LX_VIDEO) },
595 { 0, }
596 };
597
598 MODULE_DEVICE_TABLE(pci, lxfb_id_table);
599
600 static const struct dev_pm_ops lxfb_pm_ops = {
601 #ifdef CONFIG_PM_SLEEP
602 .suspend = lxfb_suspend,
603 .resume = lxfb_resume,
604 .freeze = NULL,
605 .thaw = lxfb_resume,
606 .poweroff = NULL,
607 .restore = lxfb_resume,
608 #endif
609 };
610
611 static struct pci_driver lxfb_driver = {
612 .name = "lxfb",
613 .id_table = lxfb_id_table,
614 .probe = lxfb_probe,
615 .remove = lxfb_remove,
616 .driver.pm = &lxfb_pm_ops,
617 };
618
619 #ifndef MODULE
lxfb_setup(char * options)620 static int __init lxfb_setup(char *options)
621 {
622 char *opt;
623
624 if (!options || !*options)
625 return 0;
626
627 while ((opt = strsep(&options, ",")) != NULL) {
628 if (!*opt)
629 continue;
630
631 if (!strcmp(opt, "noclear"))
632 noclear = 1;
633 else if (!strcmp(opt, "nopanel"))
634 nopanel = 1;
635 else if (!strcmp(opt, "nocrt"))
636 nocrt = 1;
637 else
638 mode_option = opt;
639 }
640
641 return 0;
642 }
643 #endif
644
lxfb_init(void)645 static int __init lxfb_init(void)
646 {
647 #ifndef MODULE
648 char *option = NULL;
649 #endif
650
651 if (fb_modesetting_disabled("lxfb"))
652 return -ENODEV;
653
654 #ifndef MODULE
655 if (fb_get_options("lxfb", &option))
656 return -ENODEV;
657
658 lxfb_setup(option);
659 #endif
660 return pci_register_driver(&lxfb_driver);
661 }
lxfb_cleanup(void)662 static void __exit lxfb_cleanup(void)
663 {
664 pci_unregister_driver(&lxfb_driver);
665 }
666
667 module_init(lxfb_init);
668 module_exit(lxfb_cleanup);
669
670 module_param(mode_option, charp, 0);
671 MODULE_PARM_DESC(mode_option, "video mode (<x>x<y>[-<bpp>][@<refr>])");
672
673 module_param(vram, int, 0);
674 MODULE_PARM_DESC(vram, "video memory size");
675
676 module_param(vt_switch, int, 0);
677 MODULE_PARM_DESC(vt_switch, "enable VT switch during suspend/resume");
678
679 MODULE_DESCRIPTION("Framebuffer driver for the AMD Geode LX");
680 MODULE_LICENSE("GPL");
681