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