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 | |
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 | |
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(xres: var->xres, bpp: var->bits_per_pixel) * var->yres) |
263 | > info->fix.smem_len) |
264 | return -EINVAL; |
265 | |
266 | return 0; |
267 | } |
268 | |
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(xres: info->var.xres, |
277 | bpp: info->var.bits_per_pixel); |
278 | |
279 | lx_set_mode(info); |
280 | return 0; |
281 | } |
282 | |
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 | |
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(chan: red, bf: &info->var.red); |
308 | v |= chan_to_field(chan: green, bf: &info->var.green); |
309 | v |= chan_to_field(chan: blue, bf: &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 | |
322 | static int lxfb_blank(int blank_mode, struct fb_info *info) |
323 | { |
324 | return lx_blank_display(info, blank_mode); |
325 | } |
326 | |
327 | |
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(offset: info->fix.smem_start, size: 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(pdev: dev, bar: 1); |
369 | |
370 | if (par->gp_regs == NULL) |
371 | return ret; |
372 | |
373 | par->dc_regs = pci_ioremap_bar(pdev: dev, bar: 2); |
374 | |
375 | if (par->dc_regs == NULL) |
376 | return ret; |
377 | |
378 | par->vp_regs = pci_ioremap_bar(pdev: dev, bar: 3); |
379 | |
380 | if (par->vp_regs == NULL) |
381 | return ret; |
382 | |
383 | write_dc(par, reg: DC_UNLOCK, DC_UNLOCK_UNLOCK); |
384 | write_dc(par, reg: DC_GLIU0_MEM_OFFSET, val: info->fix.smem_start & 0xFF000000); |
385 | write_dc(par, reg: 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 | |
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(size: sizeof(struct lxfb_par) + sizeof(u32) * 16, |
409 | dev); |
410 | if (!info) |
411 | return NULL; |
412 | |
413 | par = info->par; |
414 | |
415 | strcpy(p: info->fix.id, q: "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(cmap: &info->cmap, len: 256, transp: 0) < 0) { |
437 | framebuffer_release(info); |
438 | return NULL; |
439 | } |
440 | |
441 | info->var.grayscale = 0; |
442 | |
443 | return info; |
444 | } |
445 | |
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, state: 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 | |
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, state: 0); |
474 | console_unlock(); |
475 | return 0; |
476 | } |
477 | |
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, name: "lxfb" ); |
488 | if (ret) |
489 | return ret; |
490 | |
491 | info = lxfb_init_fbinfo(dev: &pdev->dev); |
492 | |
493 | if (info == NULL) |
494 | return -ENOMEM; |
495 | |
496 | par = info->par; |
497 | |
498 | ret = lxfb_map_video_memory(info, dev: 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: &modedb_ptr, size: &modedb_size); |
515 | ret = fb_find_mode(var: &info->var, info, mode_option, |
516 | db: modedb_ptr, dbsize: modedb_size, NULL, default_bpp: 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(var: &info->var, info); |
533 | lxfb_set_par(info); |
534 | |
535 | pm_set_vt_switch(vt_switch); |
536 | |
537 | if (register_framebuffer(fb_info: info) < 0) { |
538 | ret = -EINVAL; |
539 | goto err; |
540 | } |
541 | pci_set_drvdata(pdev, data: 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(addr: info->screen_base); |
549 | pci_release_region(pdev, 0); |
550 | } |
551 | if (par->gp_regs) { |
552 | iounmap(addr: par->gp_regs); |
553 | pci_release_region(pdev, 1); |
554 | } |
555 | if (par->dc_regs) { |
556 | iounmap(addr: par->dc_regs); |
557 | pci_release_region(pdev, 2); |
558 | } |
559 | if (par->vp_regs) { |
560 | iounmap(addr: par->vp_regs); |
561 | pci_release_region(pdev, 3); |
562 | } |
563 | |
564 | fb_dealloc_cmap(cmap: &info->cmap); |
565 | framebuffer_release(info); |
566 | |
567 | return ret; |
568 | } |
569 | |
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(fb_info: info); |
576 | |
577 | iounmap(addr: info->screen_base); |
578 | pci_release_region(pdev, 0); |
579 | |
580 | iounmap(addr: par->gp_regs); |
581 | pci_release_region(pdev, 1); |
582 | |
583 | iounmap(addr: par->dc_regs); |
584 | pci_release_region(pdev, 2); |
585 | |
586 | iounmap(addr: par->vp_regs); |
587 | pci_release_region(pdev, 3); |
588 | |
589 | fb_dealloc_cmap(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 |
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 | |
645 | static int __init lxfb_init(void) |
646 | { |
647 | #ifndef MODULE |
648 | char *option = NULL; |
649 | #endif |
650 | |
651 | if (fb_modesetting_disabled(drvname: "lxfb" )) |
652 | return -ENODEV; |
653 | |
654 | #ifndef MODULE |
655 | if (fb_get_options(name: "lxfb" , option: &option)) |
656 | return -ENODEV; |
657 | |
658 | lxfb_setup(options: option); |
659 | #endif |
660 | return pci_register_driver(&lxfb_driver); |
661 | } |
662 | static void __exit lxfb_cleanup(void) |
663 | { |
664 | pci_unregister_driver(dev: &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 | |