Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * BRIEF MODULE DESCRIPTION | |
3 | * Au1100 LCD Driver. | |
4 | * | |
3b495f2b PP |
5 | * Rewritten for 2.6 by Embedded Alley Solutions |
6 | * <source@embeddedalley.com>, based on submissions by | |
7 | * Karl Lessard <klessard@sunrisetelecom.com> | |
8 | * <c.pellegrin@exadron.com> | |
9 | * | |
f77f50ca | 10 | * PM support added by Rodolfo Giometti <giometti@linux.it> |
ca27ac4c | 11 | * Cursor enable/disable by Rodolfo Giometti <giometti@linux.it> |
f77f50ca | 12 | * |
1da177e4 LT |
13 | * Copyright 2002 MontaVista Software |
14 | * Author: MontaVista Software, Inc. | |
15 | * ppopov@mvista.com or source@mvista.com | |
16 | * | |
17 | * Copyright 2002 Alchemy Semiconductor | |
18 | * Author: Alchemy Semiconductor | |
19 | * | |
20 | * Based on: | |
21 | * linux/drivers/video/skeletonfb.c -- Skeleton for a frame buffer device | |
22 | * Created 28 Dec 1997 by Geert Uytterhoeven | |
23 | * | |
24 | * This program is free software; you can redistribute it and/or modify it | |
25 | * under the terms of the GNU General Public License as published by the | |
26 | * Free Software Foundation; either version 2 of the License, or (at your | |
27 | * option) any later version. | |
28 | * | |
29 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED | |
30 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF | |
31 | * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN | |
32 | * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, | |
33 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT | |
34 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF | |
35 | * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON | |
36 | * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
37 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF | |
38 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
39 | * | |
40 | * You should have received a copy of the GNU General Public License along | |
41 | * with this program; if not, write to the Free Software Foundation, Inc., | |
42 | * 675 Mass Ave, Cambridge, MA 02139, USA. | |
43 | */ | |
6b1889c1 | 44 | #include <linux/clk.h> |
1da177e4 LT |
45 | #include <linux/module.h> |
46 | #include <linux/kernel.h> | |
47 | #include <linux/errno.h> | |
48 | #include <linux/string.h> | |
49 | #include <linux/mm.h> | |
1da177e4 LT |
50 | #include <linux/fb.h> |
51 | #include <linux/init.h> | |
3b495f2b PP |
52 | #include <linux/interrupt.h> |
53 | #include <linux/ctype.h> | |
54 | #include <linux/dma-mapping.h> | |
cacfc8cf | 55 | #include <linux/platform_device.h> |
5a0e3ad6 | 56 | #include <linux/slab.h> |
1da177e4 | 57 | |
3b495f2b | 58 | #include <asm/mach-au1x00/au1000.h> |
1da177e4 | 59 | |
3b495f2b PP |
60 | #define DEBUG 0 |
61 | ||
62 | #include "au1100fb.h" | |
1da177e4 | 63 | |
3b495f2b PP |
64 | #define DRIVER_NAME "au1100fb" |
65 | #define DRIVER_DESC "LCD controller driver for AU1100 processors" | |
1da177e4 | 66 | |
3b495f2b PP |
67 | #define to_au1100fb_device(_info) \ |
68 | (_info ? container_of(_info, struct au1100fb_device, info) : NULL); | |
1da177e4 | 69 | |
3b495f2b PP |
70 | /* Bitfields format supported by the controller. Note that the order of formats |
71 | * SHOULD be the same as in the LCD_CONTROL_SBPPF field, so we can retrieve the | |
72 | * right pixel format by doing rgb_bitfields[LCD_CONTROL_SBPPF_XXX >> LCD_CONTROL_SBPPF] | |
73 | */ | |
74 | struct fb_bitfield rgb_bitfields[][4] = | |
75 | { | |
76 | /* Red, Green, Blue, Transp */ | |
77 | { { 10, 6, 0 }, { 5, 5, 0 }, { 0, 5, 0 }, { 0, 0, 0 } }, | |
78 | { { 11, 5, 0 }, { 5, 6, 0 }, { 0, 5, 0 }, { 0, 0, 0 } }, | |
79 | { { 11, 5, 0 }, { 6, 5, 0 }, { 0, 6, 0 }, { 0, 0, 0 } }, | |
80 | { { 10, 5, 0 }, { 5, 5, 0 }, { 0, 5, 0 }, { 15, 1, 0 } }, | |
81 | { { 11, 5, 0 }, { 6, 5, 0 }, { 1, 5, 0 }, { 0, 1, 0 } }, | |
82 | ||
83 | /* The last is used to describe 12bpp format */ | |
84 | { { 8, 4, 0 }, { 4, 4, 0 }, { 0, 4, 0 }, { 0, 0, 0 } }, | |
1da177e4 LT |
85 | }; |
86 | ||
48c68c4f | 87 | static struct fb_fix_screeninfo au1100fb_fix = { |
3b495f2b PP |
88 | .id = "AU1100 FB", |
89 | .xpanstep = 1, | |
90 | .ypanstep = 1, | |
91 | .type = FB_TYPE_PACKED_PIXELS, | |
92 | .accel = FB_ACCEL_NONE, | |
1da177e4 LT |
93 | }; |
94 | ||
48c68c4f | 95 | static struct fb_var_screeninfo au1100fb_var = { |
3b495f2b PP |
96 | .activate = FB_ACTIVATE_NOW, |
97 | .height = -1, | |
98 | .width = -1, | |
99 | .vmode = FB_VMODE_NONINTERLACED, | |
1da177e4 LT |
100 | }; |
101 | ||
8e92f21b YY |
102 | /* fb_blank |
103 | * Blank the screen. Depending on the mode, the screen will be | |
104 | * activated with the backlight color, or desactivated | |
105 | */ | |
106 | static int au1100fb_fb_blank(int blank_mode, struct fb_info *fbi) | |
107 | { | |
108 | struct au1100fb_device *fbdev = to_au1100fb_device(fbi); | |
109 | ||
110 | print_dbg("fb_blank %d %p", blank_mode, fbi); | |
111 | ||
112 | switch (blank_mode) { | |
113 | ||
114 | case VESA_NO_BLANKING: | |
88564dda PB |
115 | /* Turn on panel */ |
116 | fbdev->regs->lcd_control |= LCD_CONTROL_GO; | |
2f73bfbe | 117 | wmb(); /* drain writebuffer */ |
8e92f21b YY |
118 | break; |
119 | ||
120 | case VESA_VSYNC_SUSPEND: | |
121 | case VESA_HSYNC_SUSPEND: | |
122 | case VESA_POWERDOWN: | |
88564dda PB |
123 | /* Turn off panel */ |
124 | fbdev->regs->lcd_control &= ~LCD_CONTROL_GO; | |
2f73bfbe | 125 | wmb(); /* drain writebuffer */ |
8e92f21b YY |
126 | break; |
127 | default: | |
128 | break; | |
129 | ||
130 | } | |
131 | return 0; | |
132 | } | |
133 | ||
3b495f2b PP |
134 | /* |
135 | * Set hardware with var settings. This will enable the controller with a specific | |
136 | * mode, normally validated with the fb_check_var method | |
1da177e4 | 137 | */ |
3b495f2b | 138 | int au1100fb_setmode(struct au1100fb_device *fbdev) |
1da177e4 | 139 | { |
3b495f2b PP |
140 | struct fb_info *info = &fbdev->info; |
141 | u32 words; | |
142 | int index; | |
1da177e4 | 143 | |
3b495f2b PP |
144 | if (!fbdev) |
145 | return -EINVAL; | |
146 | ||
147 | /* Update var-dependent FB info */ | |
148 | if (panel_is_active(fbdev->panel) || panel_is_color(fbdev->panel)) { | |
149 | if (info->var.bits_per_pixel <= 8) { | |
150 | /* palettized */ | |
151 | info->var.red.offset = 0; | |
152 | info->var.red.length = info->var.bits_per_pixel; | |
153 | info->var.red.msb_right = 0; | |
154 | ||
155 | info->var.green.offset = 0; | |
156 | info->var.green.length = info->var.bits_per_pixel; | |
157 | info->var.green.msb_right = 0; | |
158 | ||
159 | info->var.blue.offset = 0; | |
160 | info->var.blue.length = info->var.bits_per_pixel; | |
161 | info->var.blue.msb_right = 0; | |
162 | ||
163 | info->var.transp.offset = 0; | |
164 | info->var.transp.length = 0; | |
165 | info->var.transp.msb_right = 0; | |
166 | ||
167 | info->fix.visual = FB_VISUAL_PSEUDOCOLOR; | |
168 | info->fix.line_length = info->var.xres_virtual / | |
169 | (8/info->var.bits_per_pixel); | |
170 | } else { | |
171 | /* non-palettized */ | |
172 | index = (fbdev->panel->control_base & LCD_CONTROL_SBPPF_MASK) >> LCD_CONTROL_SBPPF_BIT; | |
173 | info->var.red = rgb_bitfields[index][0]; | |
174 | info->var.green = rgb_bitfields[index][1]; | |
175 | info->var.blue = rgb_bitfields[index][2]; | |
176 | info->var.transp = rgb_bitfields[index][3]; | |
177 | ||
178 | info->fix.visual = FB_VISUAL_TRUECOLOR; | |
179 | info->fix.line_length = info->var.xres_virtual << 1; /* depth=16 */ | |
bb39e419 | 180 | } |
3b495f2b PP |
181 | } else { |
182 | /* mono */ | |
183 | info->fix.visual = FB_VISUAL_MONO10; | |
184 | info->fix.line_length = info->var.xres_virtual / 8; | |
1da177e4 LT |
185 | } |
186 | ||
3b495f2b | 187 | info->screen_size = info->fix.line_length * info->var.yres_virtual; |
fd2d5430 RG |
188 | info->var.rotate = ((fbdev->panel->control_base&LCD_CONTROL_SM_MASK) \ |
189 | >> LCD_CONTROL_SM_BIT) * 90; | |
1da177e4 | 190 | |
3b495f2b | 191 | /* Determine BPP mode and format */ |
fd2d5430 | 192 | fbdev->regs->lcd_control = fbdev->panel->control_base; |
3b495f2b | 193 | fbdev->regs->lcd_horztiming = fbdev->panel->horztiming; |
3b495f2b | 194 | fbdev->regs->lcd_verttiming = fbdev->panel->verttiming; |
3b495f2b | 195 | fbdev->regs->lcd_clkcontrol = fbdev->panel->clkcontrol_base; |
bb39e419 RG |
196 | fbdev->regs->lcd_intenable = 0; |
197 | fbdev->regs->lcd_intstatus = 0; | |
3b495f2b PP |
198 | fbdev->regs->lcd_dmaaddr0 = LCD_DMA_SA_N(fbdev->fb_phys); |
199 | ||
200 | if (panel_is_dual(fbdev->panel)) { | |
201 | /* Second panel display seconf half of screen if possible, | |
202 | * otherwise display the same as the first panel */ | |
203 | if (info->var.yres_virtual >= (info->var.yres << 1)) { | |
204 | fbdev->regs->lcd_dmaaddr1 = LCD_DMA_SA_N(fbdev->fb_phys + | |
205 | (info->fix.line_length * | |
206 | (info->var.yres_virtual >> 1))); | |
207 | } else { | |
208 | fbdev->regs->lcd_dmaaddr1 = LCD_DMA_SA_N(fbdev->fb_phys); | |
209 | } | |
1da177e4 | 210 | } |
1da177e4 | 211 | |
3b495f2b PP |
212 | words = info->fix.line_length / sizeof(u32); |
213 | if (!info->var.rotate || (info->var.rotate == 180)) { | |
214 | words *= info->var.yres_virtual; | |
215 | if (info->var.rotate /* 180 */) { | |
216 | words -= (words % 8); /* should be divisable by 8 */ | |
217 | } | |
218 | } | |
219 | fbdev->regs->lcd_words = LCD_WRD_WRDS_N(words); | |
1da177e4 | 220 | |
3b495f2b PP |
221 | fbdev->regs->lcd_pwmdiv = 0; |
222 | fbdev->regs->lcd_pwmhi = 0; | |
1da177e4 | 223 | |
3b495f2b PP |
224 | /* Resume controller */ |
225 | fbdev->regs->lcd_control |= LCD_CONTROL_GO; | |
bb39e419 RG |
226 | mdelay(10); |
227 | au1100fb_fb_blank(VESA_NO_BLANKING, info); | |
1da177e4 | 228 | |
3b495f2b | 229 | return 0; |
1da177e4 LT |
230 | } |
231 | ||
3b495f2b PP |
232 | /* fb_setcolreg |
233 | * Set color in LCD palette. | |
234 | */ | |
235 | int au1100fb_fb_setcolreg(unsigned regno, unsigned red, unsigned green, unsigned blue, unsigned transp, struct fb_info *fbi) | |
1da177e4 | 236 | { |
c05b7f3d RG |
237 | struct au1100fb_device *fbdev; |
238 | u32 *palette; | |
3b495f2b | 239 | u32 value; |
1da177e4 | 240 | |
c05b7f3d RG |
241 | fbdev = to_au1100fb_device(fbi); |
242 | palette = fbdev->regs->lcd_pallettebase; | |
243 | ||
3b495f2b PP |
244 | if (regno > (AU1100_LCD_NBR_PALETTE_ENTRIES - 1)) |
245 | return -EINVAL; | |
1da177e4 | 246 | |
3b495f2b PP |
247 | if (fbi->var.grayscale) { |
248 | /* Convert color to grayscale */ | |
249 | red = green = blue = | |
250 | (19595 * red + 38470 * green + 7471 * blue) >> 16; | |
251 | } | |
1da177e4 | 252 | |
3b495f2b PP |
253 | if (fbi->fix.visual == FB_VISUAL_TRUECOLOR) { |
254 | /* Place color in the pseudopalette */ | |
255 | if (regno > 16) | |
256 | return -EINVAL; | |
1da177e4 | 257 | |
3b495f2b PP |
258 | palette = (u32*)fbi->pseudo_palette; |
259 | ||
260 | red >>= (16 - fbi->var.red.length); | |
261 | green >>= (16 - fbi->var.green.length); | |
262 | blue >>= (16 - fbi->var.blue.length); | |
263 | ||
264 | value = (red << fbi->var.red.offset) | | |
265 | (green << fbi->var.green.offset)| | |
266 | (blue << fbi->var.blue.offset); | |
267 | value &= 0xFFFF; | |
268 | ||
269 | } else if (panel_is_active(fbdev->panel)) { | |
270 | /* COLOR TFT PALLETTIZED (use RGB 565) */ | |
271 | value = (red & 0xF800)|((green >> 5) & 0x07E0)|((blue >> 11) & 0x001F); | |
272 | value &= 0xFFFF; | |
273 | ||
274 | } else if (panel_is_color(fbdev->panel)) { | |
275 | /* COLOR STN MODE */ | |
276 | value = (((panel_swap_rgb(fbdev->panel) ? blue : red) >> 12) & 0x000F) | | |
277 | ((green >> 8) & 0x00F0) | | |
278 | (((panel_swap_rgb(fbdev->panel) ? red : blue) >> 4) & 0x0F00); | |
279 | value &= 0xFFF; | |
280 | } else { | |
281 | /* MONOCHROME MODE */ | |
282 | value = (green >> 12) & 0x000F; | |
283 | value &= 0xF; | |
1da177e4 LT |
284 | } |
285 | ||
3b495f2b PP |
286 | palette[regno] = value; |
287 | ||
1da177e4 LT |
288 | return 0; |
289 | } | |
290 | ||
3b495f2b PP |
291 | /* fb_pan_display |
292 | * Pan display in x and/or y as specified | |
293 | */ | |
294 | int au1100fb_fb_pan_display(struct fb_var_screeninfo *var, struct fb_info *fbi) | |
1da177e4 | 295 | { |
c05b7f3d | 296 | struct au1100fb_device *fbdev; |
3b495f2b PP |
297 | int dy; |
298 | ||
c05b7f3d RG |
299 | fbdev = to_au1100fb_device(fbi); |
300 | ||
3b495f2b PP |
301 | print_dbg("fb_pan_display %p %p", var, fbi); |
302 | ||
303 | if (!var || !fbdev) { | |
304 | return -EINVAL; | |
305 | } | |
306 | ||
307 | if (var->xoffset - fbi->var.xoffset) { | |
308 | /* No support for X panning for now! */ | |
309 | return -EINVAL; | |
310 | } | |
311 | ||
312 | print_dbg("fb_pan_display 2 %p %p", var, fbi); | |
313 | dy = var->yoffset - fbi->var.yoffset; | |
314 | if (dy) { | |
315 | ||
316 | u32 dmaaddr; | |
317 | ||
318 | print_dbg("Panning screen of %d lines", dy); | |
319 | ||
320 | dmaaddr = fbdev->regs->lcd_dmaaddr0; | |
321 | dmaaddr += (fbi->fix.line_length * dy); | |
322 | ||
323 | /* TODO: Wait for current frame to finished */ | |
324 | fbdev->regs->lcd_dmaaddr0 = LCD_DMA_SA_N(dmaaddr); | |
325 | ||
326 | if (panel_is_dual(fbdev->panel)) { | |
327 | dmaaddr = fbdev->regs->lcd_dmaaddr1; | |
328 | dmaaddr += (fbi->fix.line_length * dy); | |
329 | fbdev->regs->lcd_dmaaddr0 = LCD_DMA_SA_N(dmaaddr); | |
330 | } | |
331 | } | |
332 | print_dbg("fb_pan_display 3 %p %p", var, fbi); | |
333 | ||
334 | return 0; | |
335 | } | |
336 | ||
337 | /* fb_rotate | |
338 | * Rotate the display of this angle. This doesn't seems to be used by the core, | |
339 | * but as our hardware supports it, so why not implementing it... | |
340 | */ | |
341 | void au1100fb_fb_rotate(struct fb_info *fbi, int angle) | |
342 | { | |
343 | struct au1100fb_device *fbdev = to_au1100fb_device(fbi); | |
344 | ||
345 | print_dbg("fb_rotate %p %d", fbi, angle); | |
346 | ||
347 | if (fbdev && (angle > 0) && !(angle % 90)) { | |
348 | ||
349 | fbdev->regs->lcd_control &= ~LCD_CONTROL_GO; | |
350 | ||
351 | fbdev->regs->lcd_control &= ~(LCD_CONTROL_SM_MASK); | |
352 | fbdev->regs->lcd_control |= ((angle/90) << LCD_CONTROL_SM_BIT); | |
353 | ||
354 | fbdev->regs->lcd_control |= LCD_CONTROL_GO; | |
1da177e4 LT |
355 | } |
356 | } | |
357 | ||
3b495f2b PP |
358 | /* fb_mmap |
359 | * Map video memory in user space. We don't use the generic fb_mmap method mainly | |
360 | * to allow the use of the TLB streaming flag (CCA=6) | |
361 | */ | |
216d526c | 362 | int au1100fb_fb_mmap(struct fb_info *fbi, struct vm_area_struct *vma) |
1da177e4 | 363 | { |
c05b7f3d | 364 | struct au1100fb_device *fbdev; |
1da177e4 | 365 | |
c05b7f3d RG |
366 | fbdev = to_au1100fb_device(fbi); |
367 | ||
3b495f2b | 368 | vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); |
1da177e4 LT |
369 | pgprot_val(vma->vm_page_prot) |= (6 << 9); //CCA=6 |
370 | ||
7314e613 | 371 | return vm_iomap_memory(vma, fbdev->fb_phys, fbdev->fb_len); |
1da177e4 LT |
372 | } |
373 | ||
3b495f2b | 374 | static struct fb_ops au1100fb_ops = |
1da177e4 | 375 | { |
3b495f2b PP |
376 | .owner = THIS_MODULE, |
377 | .fb_setcolreg = au1100fb_fb_setcolreg, | |
378 | .fb_blank = au1100fb_fb_blank, | |
379 | .fb_pan_display = au1100fb_fb_pan_display, | |
380 | .fb_fillrect = cfb_fillrect, | |
381 | .fb_copyarea = cfb_copyarea, | |
382 | .fb_imageblit = cfb_imageblit, | |
383 | .fb_rotate = au1100fb_fb_rotate, | |
384 | .fb_mmap = au1100fb_fb_mmap, | |
385 | }; | |
1da177e4 | 386 | |
1da177e4 | 387 | |
3b495f2b | 388 | /*-------------------------------------------------------------------------*/ |
1da177e4 | 389 | |
d121c3f3 ML |
390 | static int au1100fb_setup(struct au1100fb_device *fbdev) |
391 | { | |
392 | char *this_opt, *options; | |
393 | int num_panels = ARRAY_SIZE(known_lcd_panels); | |
394 | ||
395 | if (num_panels <= 0) { | |
396 | print_err("No LCD panels supported by driver!"); | |
397 | return -ENODEV; | |
398 | } | |
399 | ||
400 | if (fb_get_options(DRIVER_NAME, &options)) | |
401 | return -ENODEV; | |
402 | if (!options) | |
403 | return -ENODEV; | |
404 | ||
405 | while ((this_opt = strsep(&options, ",")) != NULL) { | |
406 | /* Panel option */ | |
407 | if (!strncmp(this_opt, "panel:", 6)) { | |
408 | int i; | |
409 | this_opt += 6; | |
410 | for (i = 0; i < num_panels; i++) { | |
411 | if (!strncmp(this_opt, known_lcd_panels[i].name, | |
412 | strlen(this_opt))) { | |
413 | fbdev->panel = &known_lcd_panels[i]; | |
414 | fbdev->panel_idx = i; | |
415 | break; | |
416 | } | |
417 | } | |
418 | if (i >= num_panels) { | |
419 | print_warn("Panel '%s' not supported!", this_opt); | |
420 | return -ENODEV; | |
421 | } | |
422 | } | |
423 | /* Unsupported option */ | |
424 | else | |
425 | print_warn("Unsupported option \"%s\"", this_opt); | |
426 | } | |
427 | ||
428 | print_info("Panel=%s", fbdev->panel->name); | |
429 | ||
430 | return 0; | |
431 | } | |
1da177e4 | 432 | |
48c68c4f | 433 | static int au1100fb_drv_probe(struct platform_device *dev) |
1da177e4 | 434 | { |
3b495f2b PP |
435 | struct au1100fb_device *fbdev = NULL; |
436 | struct resource *regs_res; | |
437 | unsigned long page; | |
6b1889c1 | 438 | struct clk *c; |
3b495f2b | 439 | |
3b495f2b | 440 | /* Allocate new device private */ |
1c16697b JL |
441 | fbdev = devm_kzalloc(&dev->dev, sizeof(struct au1100fb_device), |
442 | GFP_KERNEL); | |
d121c3f3 | 443 | if (!fbdev) { |
3b495f2b PP |
444 | print_err("fail to allocate device private record"); |
445 | return -ENOMEM; | |
1da177e4 LT |
446 | } |
447 | ||
d121c3f3 ML |
448 | if (au1100fb_setup(fbdev)) |
449 | goto failed; | |
1da177e4 | 450 | |
7a192ec3 | 451 | platform_set_drvdata(dev, (void *)fbdev); |
1da177e4 | 452 | |
3b495f2b | 453 | /* Allocate region for our registers and map them */ |
d121c3f3 ML |
454 | regs_res = platform_get_resource(dev, IORESOURCE_MEM, 0); |
455 | if (!regs_res) { | |
3b495f2b PP |
456 | print_err("fail to retrieve registers resource"); |
457 | return -EFAULT; | |
458 | } | |
1da177e4 | 459 | |
3b495f2b | 460 | au1100fb_fix.mmio_start = regs_res->start; |
28f65c11 | 461 | au1100fb_fix.mmio_len = resource_size(regs_res); |
1da177e4 | 462 | |
93019734 ML |
463 | if (!devm_request_mem_region(&dev->dev, |
464 | au1100fb_fix.mmio_start, | |
1c16697b JL |
465 | au1100fb_fix.mmio_len, |
466 | DRIVER_NAME)) { | |
c05b7f3d | 467 | print_err("fail to lock memory region at 0x%08lx", |
3b495f2b PP |
468 | au1100fb_fix.mmio_start); |
469 | return -EBUSY; | |
470 | } | |
1da177e4 | 471 | |
3b495f2b | 472 | fbdev->regs = (struct au1100fb_regs*)KSEG1ADDR(au1100fb_fix.mmio_start); |
1da177e4 | 473 | |
3b495f2b PP |
474 | print_dbg("Register memory map at %p", fbdev->regs); |
475 | print_dbg("phys=0x%08x, size=%d", fbdev->regs_phys, fbdev->regs_len); | |
1da177e4 | 476 | |
6b1889c1 ML |
477 | c = clk_get(NULL, "lcd_intclk"); |
478 | if (!IS_ERR(c)) { | |
479 | fbdev->lcdclk = c; | |
480 | clk_set_rate(c, 48000000); | |
481 | clk_prepare_enable(c); | |
482 | } | |
483 | ||
3b495f2b PP |
484 | /* Allocate the framebuffer to the maximum screen size * nbr of video buffers */ |
485 | fbdev->fb_len = fbdev->panel->xres * fbdev->panel->yres * | |
486 | (fbdev->panel->bpp >> 3) * AU1100FB_NBR_VIDEO_BUFFERS; | |
487 | ||
93019734 | 488 | fbdev->fb_mem = dmam_alloc_coherent(&dev->dev, |
1c16697b JL |
489 | PAGE_ALIGN(fbdev->fb_len), |
490 | &fbdev->fb_phys, GFP_KERNEL); | |
3b495f2b PP |
491 | if (!fbdev->fb_mem) { |
492 | print_err("fail to allocate frambuffer (size: %dK))", | |
493 | fbdev->fb_len / 1024); | |
1da177e4 LT |
494 | return -ENOMEM; |
495 | } | |
3b495f2b PP |
496 | |
497 | au1100fb_fix.smem_start = fbdev->fb_phys; | |
498 | au1100fb_fix.smem_len = fbdev->fb_len; | |
1da177e4 LT |
499 | |
500 | /* | |
501 | * Set page reserved so that mmap will work. This is necessary | |
502 | * since we'll be remapping normal memory. | |
503 | */ | |
3b495f2b PP |
504 | for (page = (unsigned long)fbdev->fb_mem; |
505 | page < PAGE_ALIGN((unsigned long)fbdev->fb_mem + fbdev->fb_len); | |
1da177e4 | 506 | page += PAGE_SIZE) { |
cde0e2cc | 507 | #ifdef CONFIG_DMA_NONCOHERENT |
d121c3f3 | 508 | SetPageReserved(virt_to_page(CAC_ADDR((void *)page))); |
3b495f2b | 509 | #else |
1da177e4 | 510 | SetPageReserved(virt_to_page(page)); |
3b495f2b | 511 | #endif |
1da177e4 LT |
512 | } |
513 | ||
3b495f2b PP |
514 | print_dbg("Framebuffer memory map at %p", fbdev->fb_mem); |
515 | print_dbg("phys=0x%08x, size=%dK", fbdev->fb_phys, fbdev->fb_len / 1024); | |
516 | ||
3b495f2b PP |
517 | /* load the panel info into the var struct */ |
518 | au1100fb_var.bits_per_pixel = fbdev->panel->bpp; | |
519 | au1100fb_var.xres = fbdev->panel->xres; | |
520 | au1100fb_var.xres_virtual = au1100fb_var.xres; | |
521 | au1100fb_var.yres = fbdev->panel->yres; | |
522 | au1100fb_var.yres_virtual = au1100fb_var.yres; | |
523 | ||
524 | fbdev->info.screen_base = fbdev->fb_mem; | |
525 | fbdev->info.fbops = &au1100fb_ops; | |
526 | fbdev->info.fix = au1100fb_fix; | |
527 | ||
1c16697b JL |
528 | fbdev->info.pseudo_palette = |
529 | devm_kzalloc(&dev->dev, sizeof(u32) * 16, GFP_KERNEL); | |
530 | if (!fbdev->info.pseudo_palette) | |
3b495f2b | 531 | return -ENOMEM; |
3b495f2b PP |
532 | |
533 | if (fb_alloc_cmap(&fbdev->info.cmap, AU1100_LCD_NBR_PALETTE_ENTRIES, 0) < 0) { | |
534 | print_err("Fail to allocate colormap (%d entries)", | |
535 | AU1100_LCD_NBR_PALETTE_ENTRIES); | |
3b495f2b PP |
536 | return -EFAULT; |
537 | } | |
538 | ||
539 | fbdev->info.var = au1100fb_var; | |
540 | ||
541 | /* Set h/w registers */ | |
542 | au1100fb_setmode(fbdev); | |
543 | ||
544 | /* Register new framebuffer */ | |
545 | if (register_framebuffer(&fbdev->info) < 0) { | |
546 | print_err("cannot register new framebuffer"); | |
547 | goto failed; | |
548 | } | |
549 | ||
550 | return 0; | |
551 | ||
552 | failed: | |
6b1889c1 ML |
553 | if (fbdev->lcdclk) { |
554 | clk_disable_unprepare(fbdev->lcdclk); | |
555 | clk_put(fbdev->lcdclk); | |
556 | } | |
3b495f2b | 557 | if (fbdev->fb_mem) { |
d121c3f3 ML |
558 | dma_free_noncoherent(&dev->dev, fbdev->fb_len, fbdev->fb_mem, |
559 | fbdev->fb_phys); | |
3b495f2b PP |
560 | } |
561 | if (fbdev->info.cmap.len != 0) { | |
562 | fb_dealloc_cmap(&fbdev->info.cmap); | |
563 | } | |
1da177e4 | 564 | |
1c16697b | 565 | return -ENODEV; |
1da177e4 LT |
566 | } |
567 | ||
7a192ec3 | 568 | int au1100fb_drv_remove(struct platform_device *dev) |
3b495f2b PP |
569 | { |
570 | struct au1100fb_device *fbdev = NULL; | |
571 | ||
572 | if (!dev) | |
573 | return -ENODEV; | |
574 | ||
5a7bbe86 | 575 | fbdev = platform_get_drvdata(dev); |
3b495f2b PP |
576 | |
577 | #if !defined(CONFIG_FRAMEBUFFER_CONSOLE) && defined(CONFIG_LOGO) | |
578 | au1100fb_fb_blank(VESA_POWERDOWN, &fbdev->info); | |
579 | #endif | |
580 | fbdev->regs->lcd_control &= ~LCD_CONTROL_GO; | |
1da177e4 | 581 | |
3b495f2b PP |
582 | /* Clean up all probe data */ |
583 | unregister_framebuffer(&fbdev->info); | |
584 | ||
3b495f2b | 585 | fb_dealloc_cmap(&fbdev->info.cmap); |
3b495f2b | 586 | |
6b1889c1 ML |
587 | if (fbdev->lcdclk) { |
588 | clk_disable_unprepare(fbdev->lcdclk); | |
589 | clk_put(fbdev->lcdclk); | |
590 | } | |
591 | ||
3b495f2b PP |
592 | return 0; |
593 | } | |
594 | ||
f77f50ca | 595 | #ifdef CONFIG_PM |
f77f50ca RG |
596 | static struct au1100fb_regs fbregs; |
597 | ||
7a192ec3 | 598 | int au1100fb_drv_suspend(struct platform_device *dev, pm_message_t state) |
3b495f2b | 599 | { |
7a192ec3 | 600 | struct au1100fb_device *fbdev = platform_get_drvdata(dev); |
f77f50ca RG |
601 | |
602 | if (!fbdev) | |
603 | return 0; | |
604 | ||
f77f50ca RG |
605 | /* Blank the LCD */ |
606 | au1100fb_fb_blank(VESA_POWERDOWN, &fbdev->info); | |
607 | ||
6b1889c1 ML |
608 | if (fbdev->lcdclk) |
609 | clk_disable(fbdev->lcdclk); | |
f77f50ca RG |
610 | |
611 | memcpy(&fbregs, fbdev->regs, sizeof(struct au1100fb_regs)); | |
612 | ||
3b495f2b PP |
613 | return 0; |
614 | } | |
615 | ||
7a192ec3 | 616 | int au1100fb_drv_resume(struct platform_device *dev) |
1da177e4 | 617 | { |
7a192ec3 | 618 | struct au1100fb_device *fbdev = platform_get_drvdata(dev); |
f77f50ca RG |
619 | |
620 | if (!fbdev) | |
621 | return 0; | |
622 | ||
623 | memcpy(fbdev->regs, &fbregs, sizeof(struct au1100fb_regs)); | |
624 | ||
6b1889c1 ML |
625 | if (fbdev->lcdclk) |
626 | clk_enable(fbdev->lcdclk); | |
f77f50ca RG |
627 | |
628 | /* Unblank the LCD */ | |
629 | au1100fb_fb_blank(VESA_NO_BLANKING, &fbdev->info); | |
630 | ||
3b495f2b | 631 | return 0; |
1da177e4 | 632 | } |
f77f50ca RG |
633 | #else |
634 | #define au1100fb_drv_suspend NULL | |
635 | #define au1100fb_drv_resume NULL | |
636 | #endif | |
1da177e4 | 637 | |
7a192ec3 ML |
638 | static struct platform_driver au1100fb_driver = { |
639 | .driver = { | |
640 | .name = "au1100-lcd", | |
641 | .owner = THIS_MODULE, | |
642 | }, | |
3b495f2b PP |
643 | .probe = au1100fb_drv_probe, |
644 | .remove = au1100fb_drv_remove, | |
645 | .suspend = au1100fb_drv_suspend, | |
646 | .resume = au1100fb_drv_resume, | |
647 | }; | |
55be3108 | 648 | module_platform_driver(au1100fb_driver); |
3b495f2b PP |
649 | |
650 | MODULE_DESCRIPTION(DRIVER_DESC); | |
651 | MODULE_LICENSE("GPL"); |