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 RG |
10 | * PM support added by Rodolfo Giometti <giometti@linux.it> |
11 | * | |
1da177e4 LT |
12 | * Copyright 2002 MontaVista Software |
13 | * Author: MontaVista Software, Inc. | |
14 | * ppopov@mvista.com or source@mvista.com | |
15 | * | |
16 | * Copyright 2002 Alchemy Semiconductor | |
17 | * Author: Alchemy Semiconductor | |
18 | * | |
19 | * Based on: | |
20 | * linux/drivers/video/skeletonfb.c -- Skeleton for a frame buffer device | |
21 | * Created 28 Dec 1997 by Geert Uytterhoeven | |
22 | * | |
23 | * This program is free software; you can redistribute it and/or modify it | |
24 | * under the terms of the GNU General Public License as published by the | |
25 | * Free Software Foundation; either version 2 of the License, or (at your | |
26 | * option) any later version. | |
27 | * | |
28 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED | |
29 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF | |
30 | * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN | |
31 | * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, | |
32 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT | |
33 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF | |
34 | * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON | |
35 | * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
36 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF | |
37 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
38 | * | |
39 | * You should have received a copy of the GNU General Public License along | |
40 | * with this program; if not, write to the Free Software Foundation, Inc., | |
41 | * 675 Mass Ave, Cambridge, MA 02139, USA. | |
42 | */ | |
1da177e4 LT |
43 | #include <linux/module.h> |
44 | #include <linux/kernel.h> | |
45 | #include <linux/errno.h> | |
46 | #include <linux/string.h> | |
47 | #include <linux/mm.h> | |
1da177e4 LT |
48 | #include <linux/fb.h> |
49 | #include <linux/init.h> | |
3b495f2b PP |
50 | #include <linux/interrupt.h> |
51 | #include <linux/ctype.h> | |
52 | #include <linux/dma-mapping.h> | |
cacfc8cf | 53 | #include <linux/platform_device.h> |
1da177e4 | 54 | |
3b495f2b | 55 | #include <asm/mach-au1x00/au1000.h> |
1da177e4 | 56 | |
3b495f2b PP |
57 | #define DEBUG 0 |
58 | ||
59 | #include "au1100fb.h" | |
1da177e4 LT |
60 | |
61 | /* | |
62 | * Sanity check. If this is a new Au1100 based board, search for | |
63 | * the PB1100 ifdefs to make sure you modify the code accordingly. | |
64 | */ | |
3b495f2b PP |
65 | #if defined(CONFIG_MIPS_PB1100) |
66 | #include <asm/mach-pb1x00/pb1100.h> | |
67 | #elif defined(CONFIG_MIPS_DB1100) | |
68 | #include <asm/mach-db1x00/db1x00.h> | |
1da177e4 | 69 | #else |
3b495f2b | 70 | #error "Unknown Au1100 board, Au1100 FB driver not supported" |
1da177e4 LT |
71 | #endif |
72 | ||
3b495f2b PP |
73 | #define DRIVER_NAME "au1100fb" |
74 | #define DRIVER_DESC "LCD controller driver for AU1100 processors" | |
1da177e4 | 75 | |
3b495f2b PP |
76 | #define to_au1100fb_device(_info) \ |
77 | (_info ? container_of(_info, struct au1100fb_device, info) : NULL); | |
1da177e4 | 78 | |
3b495f2b PP |
79 | /* Bitfields format supported by the controller. Note that the order of formats |
80 | * SHOULD be the same as in the LCD_CONTROL_SBPPF field, so we can retrieve the | |
81 | * right pixel format by doing rgb_bitfields[LCD_CONTROL_SBPPF_XXX >> LCD_CONTROL_SBPPF] | |
82 | */ | |
83 | struct fb_bitfield rgb_bitfields[][4] = | |
84 | { | |
85 | /* Red, Green, Blue, Transp */ | |
86 | { { 10, 6, 0 }, { 5, 5, 0 }, { 0, 5, 0 }, { 0, 0, 0 } }, | |
87 | { { 11, 5, 0 }, { 5, 6, 0 }, { 0, 5, 0 }, { 0, 0, 0 } }, | |
88 | { { 11, 5, 0 }, { 6, 5, 0 }, { 0, 6, 0 }, { 0, 0, 0 } }, | |
89 | { { 10, 5, 0 }, { 5, 5, 0 }, { 0, 5, 0 }, { 15, 1, 0 } }, | |
90 | { { 11, 5, 0 }, { 6, 5, 0 }, { 1, 5, 0 }, { 0, 1, 0 } }, | |
91 | ||
92 | /* The last is used to describe 12bpp format */ | |
93 | { { 8, 4, 0 }, { 4, 4, 0 }, { 0, 4, 0 }, { 0, 0, 0 } }, | |
1da177e4 LT |
94 | }; |
95 | ||
3b495f2b PP |
96 | static struct fb_fix_screeninfo au1100fb_fix __initdata = { |
97 | .id = "AU1100 FB", | |
98 | .xpanstep = 1, | |
99 | .ypanstep = 1, | |
100 | .type = FB_TYPE_PACKED_PIXELS, | |
101 | .accel = FB_ACCEL_NONE, | |
1da177e4 LT |
102 | }; |
103 | ||
3b495f2b PP |
104 | static struct fb_var_screeninfo au1100fb_var __initdata = { |
105 | .activate = FB_ACTIVATE_NOW, | |
106 | .height = -1, | |
107 | .width = -1, | |
108 | .vmode = FB_VMODE_NONINTERLACED, | |
1da177e4 LT |
109 | }; |
110 | ||
3b495f2b | 111 | static struct au1100fb_drv_info drv_info; |
1da177e4 | 112 | |
3b495f2b PP |
113 | /* |
114 | * Set hardware with var settings. This will enable the controller with a specific | |
115 | * mode, normally validated with the fb_check_var method | |
1da177e4 | 116 | */ |
3b495f2b | 117 | int au1100fb_setmode(struct au1100fb_device *fbdev) |
1da177e4 | 118 | { |
3b495f2b PP |
119 | struct fb_info *info = &fbdev->info; |
120 | u32 words; | |
121 | int index; | |
1da177e4 | 122 | |
3b495f2b PP |
123 | if (!fbdev) |
124 | return -EINVAL; | |
125 | ||
126 | /* Update var-dependent FB info */ | |
127 | if (panel_is_active(fbdev->panel) || panel_is_color(fbdev->panel)) { | |
128 | if (info->var.bits_per_pixel <= 8) { | |
129 | /* palettized */ | |
130 | info->var.red.offset = 0; | |
131 | info->var.red.length = info->var.bits_per_pixel; | |
132 | info->var.red.msb_right = 0; | |
133 | ||
134 | info->var.green.offset = 0; | |
135 | info->var.green.length = info->var.bits_per_pixel; | |
136 | info->var.green.msb_right = 0; | |
137 | ||
138 | info->var.blue.offset = 0; | |
139 | info->var.blue.length = info->var.bits_per_pixel; | |
140 | info->var.blue.msb_right = 0; | |
141 | ||
142 | info->var.transp.offset = 0; | |
143 | info->var.transp.length = 0; | |
144 | info->var.transp.msb_right = 0; | |
145 | ||
146 | info->fix.visual = FB_VISUAL_PSEUDOCOLOR; | |
147 | info->fix.line_length = info->var.xres_virtual / | |
148 | (8/info->var.bits_per_pixel); | |
149 | } else { | |
150 | /* non-palettized */ | |
151 | index = (fbdev->panel->control_base & LCD_CONTROL_SBPPF_MASK) >> LCD_CONTROL_SBPPF_BIT; | |
152 | info->var.red = rgb_bitfields[index][0]; | |
153 | info->var.green = rgb_bitfields[index][1]; | |
154 | info->var.blue = rgb_bitfields[index][2]; | |
155 | info->var.transp = rgb_bitfields[index][3]; | |
156 | ||
157 | info->fix.visual = FB_VISUAL_TRUECOLOR; | |
158 | info->fix.line_length = info->var.xres_virtual << 1; /* depth=16 */ | |
bb39e419 | 159 | } |
3b495f2b PP |
160 | } else { |
161 | /* mono */ | |
162 | info->fix.visual = FB_VISUAL_MONO10; | |
163 | info->fix.line_length = info->var.xres_virtual / 8; | |
1da177e4 LT |
164 | } |
165 | ||
3b495f2b | 166 | info->screen_size = info->fix.line_length * info->var.yres_virtual; |
fd2d5430 RG |
167 | info->var.rotate = ((fbdev->panel->control_base&LCD_CONTROL_SM_MASK) \ |
168 | >> LCD_CONTROL_SM_BIT) * 90; | |
1da177e4 | 169 | |
3b495f2b | 170 | /* Determine BPP mode and format */ |
fd2d5430 | 171 | fbdev->regs->lcd_control = fbdev->panel->control_base; |
3b495f2b | 172 | fbdev->regs->lcd_horztiming = fbdev->panel->horztiming; |
3b495f2b | 173 | fbdev->regs->lcd_verttiming = fbdev->panel->verttiming; |
3b495f2b | 174 | fbdev->regs->lcd_clkcontrol = fbdev->panel->clkcontrol_base; |
bb39e419 RG |
175 | fbdev->regs->lcd_intenable = 0; |
176 | fbdev->regs->lcd_intstatus = 0; | |
3b495f2b PP |
177 | fbdev->regs->lcd_dmaaddr0 = LCD_DMA_SA_N(fbdev->fb_phys); |
178 | ||
179 | if (panel_is_dual(fbdev->panel)) { | |
180 | /* Second panel display seconf half of screen if possible, | |
181 | * otherwise display the same as the first panel */ | |
182 | if (info->var.yres_virtual >= (info->var.yres << 1)) { | |
183 | fbdev->regs->lcd_dmaaddr1 = LCD_DMA_SA_N(fbdev->fb_phys + | |
184 | (info->fix.line_length * | |
185 | (info->var.yres_virtual >> 1))); | |
186 | } else { | |
187 | fbdev->regs->lcd_dmaaddr1 = LCD_DMA_SA_N(fbdev->fb_phys); | |
188 | } | |
1da177e4 | 189 | } |
1da177e4 | 190 | |
3b495f2b PP |
191 | words = info->fix.line_length / sizeof(u32); |
192 | if (!info->var.rotate || (info->var.rotate == 180)) { | |
193 | words *= info->var.yres_virtual; | |
194 | if (info->var.rotate /* 180 */) { | |
195 | words -= (words % 8); /* should be divisable by 8 */ | |
196 | } | |
197 | } | |
198 | fbdev->regs->lcd_words = LCD_WRD_WRDS_N(words); | |
1da177e4 | 199 | |
3b495f2b PP |
200 | fbdev->regs->lcd_pwmdiv = 0; |
201 | fbdev->regs->lcd_pwmhi = 0; | |
1da177e4 | 202 | |
3b495f2b PP |
203 | /* Resume controller */ |
204 | fbdev->regs->lcd_control |= LCD_CONTROL_GO; | |
bb39e419 RG |
205 | mdelay(10); |
206 | au1100fb_fb_blank(VESA_NO_BLANKING, info); | |
1da177e4 | 207 | |
3b495f2b | 208 | return 0; |
1da177e4 LT |
209 | } |
210 | ||
3b495f2b PP |
211 | /* fb_setcolreg |
212 | * Set color in LCD palette. | |
213 | */ | |
214 | int au1100fb_fb_setcolreg(unsigned regno, unsigned red, unsigned green, unsigned blue, unsigned transp, struct fb_info *fbi) | |
1da177e4 | 215 | { |
c05b7f3d RG |
216 | struct au1100fb_device *fbdev; |
217 | u32 *palette; | |
3b495f2b | 218 | u32 value; |
1da177e4 | 219 | |
c05b7f3d RG |
220 | fbdev = to_au1100fb_device(fbi); |
221 | palette = fbdev->regs->lcd_pallettebase; | |
222 | ||
3b495f2b PP |
223 | if (regno > (AU1100_LCD_NBR_PALETTE_ENTRIES - 1)) |
224 | return -EINVAL; | |
1da177e4 | 225 | |
3b495f2b PP |
226 | if (fbi->var.grayscale) { |
227 | /* Convert color to grayscale */ | |
228 | red = green = blue = | |
229 | (19595 * red + 38470 * green + 7471 * blue) >> 16; | |
230 | } | |
1da177e4 | 231 | |
3b495f2b PP |
232 | if (fbi->fix.visual == FB_VISUAL_TRUECOLOR) { |
233 | /* Place color in the pseudopalette */ | |
234 | if (regno > 16) | |
235 | return -EINVAL; | |
1da177e4 | 236 | |
3b495f2b PP |
237 | palette = (u32*)fbi->pseudo_palette; |
238 | ||
239 | red >>= (16 - fbi->var.red.length); | |
240 | green >>= (16 - fbi->var.green.length); | |
241 | blue >>= (16 - fbi->var.blue.length); | |
242 | ||
243 | value = (red << fbi->var.red.offset) | | |
244 | (green << fbi->var.green.offset)| | |
245 | (blue << fbi->var.blue.offset); | |
246 | value &= 0xFFFF; | |
247 | ||
248 | } else if (panel_is_active(fbdev->panel)) { | |
249 | /* COLOR TFT PALLETTIZED (use RGB 565) */ | |
250 | value = (red & 0xF800)|((green >> 5) & 0x07E0)|((blue >> 11) & 0x001F); | |
251 | value &= 0xFFFF; | |
252 | ||
253 | } else if (panel_is_color(fbdev->panel)) { | |
254 | /* COLOR STN MODE */ | |
255 | value = (((panel_swap_rgb(fbdev->panel) ? blue : red) >> 12) & 0x000F) | | |
256 | ((green >> 8) & 0x00F0) | | |
257 | (((panel_swap_rgb(fbdev->panel) ? red : blue) >> 4) & 0x0F00); | |
258 | value &= 0xFFF; | |
259 | } else { | |
260 | /* MONOCHROME MODE */ | |
261 | value = (green >> 12) & 0x000F; | |
262 | value &= 0xF; | |
1da177e4 LT |
263 | } |
264 | ||
3b495f2b PP |
265 | palette[regno] = value; |
266 | ||
1da177e4 LT |
267 | return 0; |
268 | } | |
269 | ||
3b495f2b PP |
270 | /* fb_blank |
271 | * Blank the screen. Depending on the mode, the screen will be | |
272 | * activated with the backlight color, or desactivated | |
273 | */ | |
274 | int au1100fb_fb_blank(int blank_mode, struct fb_info *fbi) | |
1da177e4 | 275 | { |
3b495f2b PP |
276 | struct au1100fb_device *fbdev = to_au1100fb_device(fbi); |
277 | ||
278 | print_dbg("fb_blank %d %p", blank_mode, fbi); | |
1da177e4 LT |
279 | |
280 | switch (blank_mode) { | |
3b495f2b | 281 | |
1da177e4 | 282 | case VESA_NO_BLANKING: |
3b495f2b PP |
283 | /* Turn on panel */ |
284 | fbdev->regs->lcd_control |= LCD_CONTROL_GO; | |
1da177e4 | 285 | #ifdef CONFIG_MIPS_PB1100 |
3b495f2b PP |
286 | if (drv_info.panel_idx == 1) { |
287 | au_writew(au_readw(PB1100_G_CONTROL) | |
288 | | (PB1100_G_CONTROL_BL | PB1100_G_CONTROL_VDD), | |
1da177e4 | 289 | PB1100_G_CONTROL); |
3b495f2b | 290 | } |
1da177e4 LT |
291 | #endif |
292 | au_sync(); | |
293 | break; | |
294 | ||
295 | case VESA_VSYNC_SUSPEND: | |
296 | case VESA_HSYNC_SUSPEND: | |
297 | case VESA_POWERDOWN: | |
3b495f2b PP |
298 | /* Turn off panel */ |
299 | fbdev->regs->lcd_control &= ~LCD_CONTROL_GO; | |
1da177e4 | 300 | #ifdef CONFIG_MIPS_PB1100 |
3b495f2b PP |
301 | if (drv_info.panel_idx == 1) { |
302 | au_writew(au_readw(PB1100_G_CONTROL) | |
303 | & ~(PB1100_G_CONTROL_BL | PB1100_G_CONTROL_VDD), | |
1da177e4 | 304 | PB1100_G_CONTROL); |
3b495f2b | 305 | } |
1da177e4 LT |
306 | #endif |
307 | au_sync(); | |
308 | break; | |
309 | default: | |
310 | break; | |
311 | ||
312 | } | |
313 | return 0; | |
314 | } | |
315 | ||
3b495f2b PP |
316 | /* fb_pan_display |
317 | * Pan display in x and/or y as specified | |
318 | */ | |
319 | int au1100fb_fb_pan_display(struct fb_var_screeninfo *var, struct fb_info *fbi) | |
1da177e4 | 320 | { |
c05b7f3d | 321 | struct au1100fb_device *fbdev; |
3b495f2b PP |
322 | int dy; |
323 | ||
c05b7f3d RG |
324 | fbdev = to_au1100fb_device(fbi); |
325 | ||
3b495f2b PP |
326 | print_dbg("fb_pan_display %p %p", var, fbi); |
327 | ||
328 | if (!var || !fbdev) { | |
329 | return -EINVAL; | |
330 | } | |
331 | ||
332 | if (var->xoffset - fbi->var.xoffset) { | |
333 | /* No support for X panning for now! */ | |
334 | return -EINVAL; | |
335 | } | |
336 | ||
337 | print_dbg("fb_pan_display 2 %p %p", var, fbi); | |
338 | dy = var->yoffset - fbi->var.yoffset; | |
339 | if (dy) { | |
340 | ||
341 | u32 dmaaddr; | |
342 | ||
343 | print_dbg("Panning screen of %d lines", dy); | |
344 | ||
345 | dmaaddr = fbdev->regs->lcd_dmaaddr0; | |
346 | dmaaddr += (fbi->fix.line_length * dy); | |
347 | ||
348 | /* TODO: Wait for current frame to finished */ | |
349 | fbdev->regs->lcd_dmaaddr0 = LCD_DMA_SA_N(dmaaddr); | |
350 | ||
351 | if (panel_is_dual(fbdev->panel)) { | |
352 | dmaaddr = fbdev->regs->lcd_dmaaddr1; | |
353 | dmaaddr += (fbi->fix.line_length * dy); | |
354 | fbdev->regs->lcd_dmaaddr0 = LCD_DMA_SA_N(dmaaddr); | |
355 | } | |
356 | } | |
357 | print_dbg("fb_pan_display 3 %p %p", var, fbi); | |
358 | ||
359 | return 0; | |
360 | } | |
361 | ||
362 | /* fb_rotate | |
363 | * Rotate the display of this angle. This doesn't seems to be used by the core, | |
364 | * but as our hardware supports it, so why not implementing it... | |
365 | */ | |
366 | void au1100fb_fb_rotate(struct fb_info *fbi, int angle) | |
367 | { | |
368 | struct au1100fb_device *fbdev = to_au1100fb_device(fbi); | |
369 | ||
370 | print_dbg("fb_rotate %p %d", fbi, angle); | |
371 | ||
372 | if (fbdev && (angle > 0) && !(angle % 90)) { | |
373 | ||
374 | fbdev->regs->lcd_control &= ~LCD_CONTROL_GO; | |
375 | ||
376 | fbdev->regs->lcd_control &= ~(LCD_CONTROL_SM_MASK); | |
377 | fbdev->regs->lcd_control |= ((angle/90) << LCD_CONTROL_SM_BIT); | |
378 | ||
379 | fbdev->regs->lcd_control |= LCD_CONTROL_GO; | |
1da177e4 LT |
380 | } |
381 | } | |
382 | ||
3b495f2b PP |
383 | /* fb_mmap |
384 | * Map video memory in user space. We don't use the generic fb_mmap method mainly | |
385 | * to allow the use of the TLB streaming flag (CCA=6) | |
386 | */ | |
216d526c | 387 | int au1100fb_fb_mmap(struct fb_info *fbi, struct vm_area_struct *vma) |
1da177e4 | 388 | { |
c05b7f3d | 389 | struct au1100fb_device *fbdev; |
1da177e4 LT |
390 | unsigned int len; |
391 | unsigned long start=0, off; | |
1da177e4 | 392 | |
c05b7f3d RG |
393 | fbdev = to_au1100fb_device(fbi); |
394 | ||
1da177e4 LT |
395 | if (vma->vm_pgoff > (~0UL >> PAGE_SHIFT)) { |
396 | return -EINVAL; | |
397 | } | |
398 | ||
3b495f2b PP |
399 | start = fbdev->fb_phys & PAGE_MASK; |
400 | len = PAGE_ALIGN((start & ~PAGE_MASK) + fbdev->fb_len); | |
1da177e4 LT |
401 | |
402 | off = vma->vm_pgoff << PAGE_SHIFT; | |
403 | ||
404 | if ((vma->vm_end - vma->vm_start + off) > len) { | |
405 | return -EINVAL; | |
406 | } | |
407 | ||
408 | off += start; | |
409 | vma->vm_pgoff = off >> PAGE_SHIFT; | |
410 | ||
3b495f2b | 411 | vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); |
1da177e4 LT |
412 | pgprot_val(vma->vm_page_prot) |= (6 << 9); //CCA=6 |
413 | ||
1da177e4 LT |
414 | vma->vm_flags |= VM_IO; |
415 | ||
cacfc8cf | 416 | if (io_remap_pfn_range(vma, vma->vm_start, off >> PAGE_SHIFT, |
1da177e4 LT |
417 | vma->vm_end - vma->vm_start, |
418 | vma->vm_page_prot)) { | |
419 | return -EAGAIN; | |
420 | } | |
421 | ||
1da177e4 LT |
422 | return 0; |
423 | } | |
424 | ||
3b495f2b | 425 | static struct fb_ops au1100fb_ops = |
1da177e4 | 426 | { |
3b495f2b PP |
427 | .owner = THIS_MODULE, |
428 | .fb_setcolreg = au1100fb_fb_setcolreg, | |
429 | .fb_blank = au1100fb_fb_blank, | |
430 | .fb_pan_display = au1100fb_fb_pan_display, | |
431 | .fb_fillrect = cfb_fillrect, | |
432 | .fb_copyarea = cfb_copyarea, | |
433 | .fb_imageblit = cfb_imageblit, | |
434 | .fb_rotate = au1100fb_fb_rotate, | |
435 | .fb_mmap = au1100fb_fb_mmap, | |
436 | }; | |
1da177e4 | 437 | |
1da177e4 | 438 | |
3b495f2b | 439 | /*-------------------------------------------------------------------------*/ |
1da177e4 | 440 | |
3b495f2b | 441 | /* AU1100 LCD controller device driver */ |
1da177e4 | 442 | |
3b495f2b | 443 | int au1100fb_drv_probe(struct device *dev) |
1da177e4 | 444 | { |
3b495f2b PP |
445 | struct au1100fb_device *fbdev = NULL; |
446 | struct resource *regs_res; | |
447 | unsigned long page; | |
448 | u32 sys_clksrc; | |
449 | ||
450 | if (!dev) | |
1da177e4 | 451 | return -EINVAL; |
3b495f2b PP |
452 | |
453 | /* Allocate new device private */ | |
454 | if (!(fbdev = kmalloc(sizeof(struct au1100fb_device), GFP_KERNEL))) { | |
455 | print_err("fail to allocate device private record"); | |
456 | return -ENOMEM; | |
1da177e4 | 457 | } |
3b495f2b | 458 | memset((void*)fbdev, 0, sizeof(struct au1100fb_device)); |
1da177e4 | 459 | |
3b495f2b | 460 | fbdev->panel = &known_lcd_panels[drv_info.panel_idx]; |
1da177e4 | 461 | |
3b495f2b | 462 | dev_set_drvdata(dev, (void*)fbdev); |
1da177e4 | 463 | |
3b495f2b PP |
464 | /* Allocate region for our registers and map them */ |
465 | if (!(regs_res = platform_get_resource(to_platform_device(dev), | |
466 | IORESOURCE_MEM, 0))) { | |
467 | print_err("fail to retrieve registers resource"); | |
468 | return -EFAULT; | |
469 | } | |
1da177e4 | 470 | |
3b495f2b PP |
471 | au1100fb_fix.mmio_start = regs_res->start; |
472 | au1100fb_fix.mmio_len = regs_res->end - regs_res->start + 1; | |
1da177e4 | 473 | |
3b495f2b PP |
474 | if (!request_mem_region(au1100fb_fix.mmio_start, au1100fb_fix.mmio_len, |
475 | DRIVER_NAME)) { | |
c05b7f3d | 476 | print_err("fail to lock memory region at 0x%08lx", |
3b495f2b PP |
477 | au1100fb_fix.mmio_start); |
478 | return -EBUSY; | |
479 | } | |
1da177e4 | 480 | |
3b495f2b | 481 | fbdev->regs = (struct au1100fb_regs*)KSEG1ADDR(au1100fb_fix.mmio_start); |
1da177e4 | 482 | |
3b495f2b PP |
483 | print_dbg("Register memory map at %p", fbdev->regs); |
484 | print_dbg("phys=0x%08x, size=%d", fbdev->regs_phys, fbdev->regs_len); | |
1da177e4 | 485 | |
1da177e4 | 486 | |
1da177e4 | 487 | |
3b495f2b PP |
488 | /* Allocate the framebuffer to the maximum screen size * nbr of video buffers */ |
489 | fbdev->fb_len = fbdev->panel->xres * fbdev->panel->yres * | |
490 | (fbdev->panel->bpp >> 3) * AU1100FB_NBR_VIDEO_BUFFERS; | |
491 | ||
492 | fbdev->fb_mem = dma_alloc_coherent(dev, PAGE_ALIGN(fbdev->fb_len), | |
493 | &fbdev->fb_phys, GFP_KERNEL); | |
494 | if (!fbdev->fb_mem) { | |
495 | print_err("fail to allocate frambuffer (size: %dK))", | |
496 | fbdev->fb_len / 1024); | |
1da177e4 LT |
497 | return -ENOMEM; |
498 | } | |
3b495f2b PP |
499 | |
500 | au1100fb_fix.smem_start = fbdev->fb_phys; | |
501 | au1100fb_fix.smem_len = fbdev->fb_len; | |
1da177e4 LT |
502 | |
503 | /* | |
504 | * Set page reserved so that mmap will work. This is necessary | |
505 | * since we'll be remapping normal memory. | |
506 | */ | |
3b495f2b PP |
507 | for (page = (unsigned long)fbdev->fb_mem; |
508 | page < PAGE_ALIGN((unsigned long)fbdev->fb_mem + fbdev->fb_len); | |
1da177e4 | 509 | page += PAGE_SIZE) { |
3b495f2b PP |
510 | #if CONFIG_DMA_NONCOHERENT |
511 | SetPageReserved(virt_to_page(CAC_ADDR(page))); | |
512 | #else | |
1da177e4 | 513 | SetPageReserved(virt_to_page(page)); |
3b495f2b | 514 | #endif |
1da177e4 LT |
515 | } |
516 | ||
3b495f2b PP |
517 | print_dbg("Framebuffer memory map at %p", fbdev->fb_mem); |
518 | print_dbg("phys=0x%08x, size=%dK", fbdev->fb_phys, fbdev->fb_len / 1024); | |
519 | ||
520 | /* Setup LCD clock to AUX (48 MHz) */ | |
521 | sys_clksrc = au_readl(SYS_CLKSRC) & ~(SYS_CS_ML_MASK | SYS_CS_DL | SYS_CS_CL); | |
522 | au_writel((sys_clksrc | (1 << SYS_CS_ML_BIT)), SYS_CLKSRC); | |
523 | ||
524 | /* load the panel info into the var struct */ | |
525 | au1100fb_var.bits_per_pixel = fbdev->panel->bpp; | |
526 | au1100fb_var.xres = fbdev->panel->xres; | |
527 | au1100fb_var.xres_virtual = au1100fb_var.xres; | |
528 | au1100fb_var.yres = fbdev->panel->yres; | |
529 | au1100fb_var.yres_virtual = au1100fb_var.yres; | |
530 | ||
531 | fbdev->info.screen_base = fbdev->fb_mem; | |
532 | fbdev->info.fbops = &au1100fb_ops; | |
533 | fbdev->info.fix = au1100fb_fix; | |
534 | ||
535 | if (!(fbdev->info.pseudo_palette = kmalloc(sizeof(u32) * 16, GFP_KERNEL))) { | |
536 | return -ENOMEM; | |
537 | } | |
538 | memset(fbdev->info.pseudo_palette, 0, sizeof(u32) * 16); | |
539 | ||
540 | if (fb_alloc_cmap(&fbdev->info.cmap, AU1100_LCD_NBR_PALETTE_ENTRIES, 0) < 0) { | |
541 | print_err("Fail to allocate colormap (%d entries)", | |
542 | AU1100_LCD_NBR_PALETTE_ENTRIES); | |
543 | kfree(fbdev->info.pseudo_palette); | |
544 | return -EFAULT; | |
545 | } | |
546 | ||
547 | fbdev->info.var = au1100fb_var; | |
548 | ||
549 | /* Set h/w registers */ | |
550 | au1100fb_setmode(fbdev); | |
551 | ||
552 | /* Register new framebuffer */ | |
553 | if (register_framebuffer(&fbdev->info) < 0) { | |
554 | print_err("cannot register new framebuffer"); | |
555 | goto failed; | |
556 | } | |
557 | ||
558 | return 0; | |
559 | ||
560 | failed: | |
561 | if (fbdev->regs) { | |
562 | release_mem_region(fbdev->regs_phys, fbdev->regs_len); | |
563 | } | |
564 | if (fbdev->fb_mem) { | |
565 | dma_free_noncoherent(dev, fbdev->fb_len, fbdev->fb_mem, fbdev->fb_phys); | |
566 | } | |
567 | if (fbdev->info.cmap.len != 0) { | |
568 | fb_dealloc_cmap(&fbdev->info.cmap); | |
569 | } | |
570 | kfree(fbdev); | |
571 | dev_set_drvdata(dev, NULL); | |
1da177e4 LT |
572 | |
573 | return 0; | |
574 | } | |
575 | ||
3b495f2b PP |
576 | int au1100fb_drv_remove(struct device *dev) |
577 | { | |
578 | struct au1100fb_device *fbdev = NULL; | |
579 | ||
580 | if (!dev) | |
581 | return -ENODEV; | |
582 | ||
583 | fbdev = (struct au1100fb_device*) dev_get_drvdata(dev); | |
584 | ||
585 | #if !defined(CONFIG_FRAMEBUFFER_CONSOLE) && defined(CONFIG_LOGO) | |
586 | au1100fb_fb_blank(VESA_POWERDOWN, &fbdev->info); | |
587 | #endif | |
588 | fbdev->regs->lcd_control &= ~LCD_CONTROL_GO; | |
1da177e4 | 589 | |
3b495f2b PP |
590 | /* Clean up all probe data */ |
591 | unregister_framebuffer(&fbdev->info); | |
592 | ||
593 | release_mem_region(fbdev->regs_phys, fbdev->regs_len); | |
594 | ||
595 | dma_free_coherent(dev, PAGE_ALIGN(fbdev->fb_len), fbdev->fb_mem, fbdev->fb_phys); | |
596 | ||
597 | fb_dealloc_cmap(&fbdev->info.cmap); | |
598 | kfree(fbdev->info.pseudo_palette); | |
599 | kfree((void*)fbdev); | |
600 | ||
601 | return 0; | |
602 | } | |
603 | ||
f77f50ca RG |
604 | #ifdef CONFIG_PM |
605 | static u32 sys_clksrc; | |
606 | static struct au1100fb_regs fbregs; | |
607 | ||
c05b7f3d | 608 | int au1100fb_drv_suspend(struct device *dev, pm_message_t state) |
3b495f2b | 609 | { |
f77f50ca RG |
610 | struct au1100fb_device *fbdev = dev_get_drvdata(dev); |
611 | ||
612 | if (!fbdev) | |
613 | return 0; | |
614 | ||
615 | /* Save the clock source state */ | |
616 | sys_clksrc = au_readl(SYS_CLKSRC); | |
617 | ||
618 | /* Blank the LCD */ | |
619 | au1100fb_fb_blank(VESA_POWERDOWN, &fbdev->info); | |
620 | ||
621 | /* Stop LCD clocking */ | |
622 | au_writel(sys_clksrc & ~SYS_CS_ML_MASK, SYS_CLKSRC); | |
623 | ||
624 | memcpy(&fbregs, fbdev->regs, sizeof(struct au1100fb_regs)); | |
625 | ||
3b495f2b PP |
626 | return 0; |
627 | } | |
628 | ||
c05b7f3d | 629 | int au1100fb_drv_resume(struct device *dev) |
1da177e4 | 630 | { |
f77f50ca RG |
631 | struct au1100fb_device *fbdev = dev_get_drvdata(dev); |
632 | ||
633 | if (!fbdev) | |
634 | return 0; | |
635 | ||
636 | memcpy(fbdev->regs, &fbregs, sizeof(struct au1100fb_regs)); | |
637 | ||
638 | /* Restart LCD clocking */ | |
639 | au_writel(sys_clksrc, SYS_CLKSRC); | |
640 | ||
641 | /* Unblank the LCD */ | |
642 | au1100fb_fb_blank(VESA_NO_BLANKING, &fbdev->info); | |
643 | ||
3b495f2b | 644 | return 0; |
1da177e4 | 645 | } |
f77f50ca RG |
646 | #else |
647 | #define au1100fb_drv_suspend NULL | |
648 | #define au1100fb_drv_resume NULL | |
649 | #endif | |
1da177e4 | 650 | |
3b495f2b PP |
651 | static struct device_driver au1100fb_driver = { |
652 | .name = "au1100-lcd", | |
653 | .bus = &platform_bus_type, | |
1da177e4 | 654 | |
3b495f2b PP |
655 | .probe = au1100fb_drv_probe, |
656 | .remove = au1100fb_drv_remove, | |
657 | .suspend = au1100fb_drv_suspend, | |
658 | .resume = au1100fb_drv_resume, | |
659 | }; | |
660 | ||
661 | /*-------------------------------------------------------------------------*/ | |
662 | ||
663 | /* Kernel driver */ | |
664 | ||
665 | int au1100fb_setup(char *options) | |
1da177e4 LT |
666 | { |
667 | char* this_opt; | |
3b495f2b PP |
668 | int num_panels = ARRAY_SIZE(known_lcd_panels); |
669 | char* mode = NULL; | |
670 | int panel_idx = 0; | |
1da177e4 | 671 | |
3b495f2b PP |
672 | if (num_panels <= 0) { |
673 | print_err("No LCD panels supported by driver!"); | |
674 | return -EFAULT; | |
675 | } | |
1da177e4 | 676 | |
3b495f2b PP |
677 | if (options) { |
678 | while ((this_opt = strsep(&options,",")) != NULL) { | |
679 | /* Panel option */ | |
1da177e4 | 680 | if (!strncmp(this_opt, "panel:", 6)) { |
3b495f2b PP |
681 | int i; |
682 | this_opt += 6; | |
683 | for (i = 0; i < num_panels; i++) { | |
684 | if (!strncmp(this_opt, | |
685 | known_lcd_panels[i].name, | |
1da177e4 | 686 | strlen(this_opt))) { |
3b495f2b | 687 | panel_idx = i; |
1da177e4 LT |
688 | break; |
689 | } | |
690 | } | |
3b495f2b PP |
691 | if (i >= num_panels) { |
692 | print_warn("Panel %s not supported!", this_opt); | |
693 | } | |
694 | } | |
695 | /* Mode option (only option that start with digit) */ | |
696 | else if (isdigit(this_opt[0])) { | |
697 | mode = kmalloc(strlen(this_opt) + 1, GFP_KERNEL); | |
698 | strncpy(mode, this_opt, strlen(this_opt) + 1); | |
699 | } | |
700 | /* Unsupported option */ | |
701 | else { | |
702 | print_warn("Unsupported option \"%s\"", this_opt); | |
1da177e4 | 703 | } |
1da177e4 LT |
704 | } |
705 | } | |
706 | ||
3b495f2b PP |
707 | drv_info.panel_idx = panel_idx; |
708 | drv_info.opt_mode = mode; | |
1da177e4 | 709 | |
3b495f2b PP |
710 | print_info("Panel=%s Mode=%s", |
711 | known_lcd_panels[drv_info.panel_idx].name, | |
712 | drv_info.opt_mode ? drv_info.opt_mode : "default"); | |
1da177e4 | 713 | |
3b495f2b PP |
714 | return 0; |
715 | } | |
1da177e4 | 716 | |
3b495f2b | 717 | int __init au1100fb_init(void) |
1da177e4 | 718 | { |
3b495f2b PP |
719 | char* options; |
720 | int ret; | |
721 | ||
722 | print_info("" DRIVER_DESC ""); | |
723 | ||
724 | memset(&drv_info, 0, sizeof(drv_info)); | |
725 | ||
726 | if (fb_get_options(DRIVER_NAME, &options)) | |
727 | return -ENODEV; | |
728 | ||
729 | /* Setup driver with options */ | |
730 | ret = au1100fb_setup(options); | |
731 | if (ret < 0) { | |
732 | print_err("Fail to setup driver"); | |
733 | return ret; | |
734 | } | |
735 | ||
736 | return driver_register(&au1100fb_driver); | |
1da177e4 LT |
737 | } |
738 | ||
3b495f2b | 739 | void __exit au1100fb_cleanup(void) |
1da177e4 | 740 | { |
3b495f2b PP |
741 | driver_unregister(&au1100fb_driver); |
742 | ||
8f760780 | 743 | kfree(drv_info.opt_mode); |
1da177e4 LT |
744 | } |
745 | ||
3b495f2b PP |
746 | module_init(au1100fb_init); |
747 | module_exit(au1100fb_cleanup); | |
748 | ||
749 | MODULE_DESCRIPTION(DRIVER_DESC); | |
750 | MODULE_LICENSE("GPL"); |