Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * linux/drivers/video/pxafb.c | |
3 | * | |
4 | * Copyright (C) 1999 Eric A. Thomas. | |
5 | * Copyright (C) 2004 Jean-Frederic Clere. | |
6 | * Copyright (C) 2004 Ian Campbell. | |
7 | * Copyright (C) 2004 Jeff Lackey. | |
8 | * Based on sa1100fb.c Copyright (C) 1999 Eric A. Thomas | |
9 | * which in turn is | |
10 | * Based on acornfb.c Copyright (C) Russell King. | |
11 | * | |
12 | * This file is subject to the terms and conditions of the GNU General Public | |
13 | * License. See the file COPYING in the main directory of this archive for | |
14 | * more details. | |
15 | * | |
16 | * Intel PXA250/210 LCD Controller Frame Buffer Driver | |
17 | * | |
18 | * Please direct your questions and comments on this driver to the following | |
19 | * email address: | |
20 | * | |
21 | * linux-arm-kernel@lists.arm.linux.org.uk | |
22 | * | |
198fc108 EM |
23 | * Add support for overlay1 and overlay2 based on pxafb_overlay.c: |
24 | * | |
25 | * Copyright (C) 2004, Intel Corporation | |
26 | * | |
27 | * 2003/08/27: <yu.tang@intel.com> | |
28 | * 2004/03/10: <stanley.cai@intel.com> | |
29 | * 2004/10/28: <yan.yin@intel.com> | |
30 | * | |
31 | * Copyright (C) 2006-2008 Marvell International Ltd. | |
32 | * All Rights Reserved | |
1da177e4 LT |
33 | */ |
34 | ||
1da177e4 LT |
35 | #include <linux/module.h> |
36 | #include <linux/moduleparam.h> | |
37 | #include <linux/kernel.h> | |
38 | #include <linux/sched.h> | |
39 | #include <linux/errno.h> | |
40 | #include <linux/string.h> | |
41 | #include <linux/interrupt.h> | |
42 | #include <linux/slab.h> | |
27ac792c | 43 | #include <linux/mm.h> |
1da177e4 LT |
44 | #include <linux/fb.h> |
45 | #include <linux/delay.h> | |
46 | #include <linux/init.h> | |
47 | #include <linux/ioport.h> | |
48 | #include <linux/cpufreq.h> | |
d052d1be | 49 | #include <linux/platform_device.h> |
1da177e4 | 50 | #include <linux/dma-mapping.h> |
72e3524c RK |
51 | #include <linux/clk.h> |
52 | #include <linux/err.h> | |
2ba162b9 | 53 | #include <linux/completion.h> |
b91dbce5 | 54 | #include <linux/mutex.h> |
3c42a449 EM |
55 | #include <linux/kthread.h> |
56 | #include <linux/freezer.h> | |
23f13656 | 57 | #include <linux/console.h> |
420a4882 | 58 | #include <linux/of_graph.h> |
31e1391a | 59 | #include <linux/regulator/consumer.h> |
420a4882 RJ |
60 | #include <video/of_display_timing.h> |
61 | #include <video/videomode.h> | |
1da177e4 | 62 | |
a09e64fb | 63 | #include <mach/hardware.h> |
1da177e4 LT |
64 | #include <asm/io.h> |
65 | #include <asm/irq.h> | |
bf1b8ab6 | 66 | #include <asm/div64.h> |
a09e64fb | 67 | #include <mach/bitfield.h> |
293b2da1 | 68 | #include <linux/platform_data/video-pxafb.h> |
1da177e4 LT |
69 | |
70 | /* | |
71 | * Complain if VAR is out of range. | |
72 | */ | |
73 | #define DEBUG_VAR 1 | |
74 | ||
75 | #include "pxafb.h" | |
76 | ||
77 | /* Bits which should not be set in machine configuration structures */ | |
b0086efb | 78 | #define LCCR0_INVALID_CONFIG_MASK (LCCR0_OUM | LCCR0_BM | LCCR0_QDM |\ |
79 | LCCR0_DIS | LCCR0_EFM | LCCR0_IUM |\ | |
80 | LCCR0_SFM | LCCR0_LDM | LCCR0_ENB) | |
81 | ||
82 | #define LCCR3_INVALID_CONFIG_MASK (LCCR3_HSP | LCCR3_VSP |\ | |
878f5783 | 83 | LCCR3_PCD | LCCR3_BPP(0xf)) |
1da177e4 | 84 | |
b0086efb | 85 | static int pxafb_activate_var(struct fb_var_screeninfo *var, |
86 | struct pxafb_info *); | |
1da177e4 | 87 | static void set_ctrlr_state(struct pxafb_info *fbi, u_int state); |
448ac479 SN |
88 | static void setup_base_frame(struct pxafb_info *fbi, |
89 | struct fb_var_screeninfo *var, int branch); | |
198fc108 EM |
90 | static int setup_frame_dma(struct pxafb_info *fbi, int dma, int pal, |
91 | unsigned long offset, size_t size); | |
1da177e4 | 92 | |
77e19675 | 93 | static unsigned long video_mem_size = 0; |
1da177e4 | 94 | |
a7535ba7 EM |
95 | static inline unsigned long |
96 | lcd_readl(struct pxafb_info *fbi, unsigned int off) | |
97 | { | |
98 | return __raw_readl(fbi->mmio_base + off); | |
99 | } | |
100 | ||
101 | static inline void | |
102 | lcd_writel(struct pxafb_info *fbi, unsigned int off, unsigned long val) | |
103 | { | |
104 | __raw_writel(val, fbi->mmio_base + off); | |
105 | } | |
106 | ||
1da177e4 LT |
107 | static inline void pxafb_schedule_work(struct pxafb_info *fbi, u_int state) |
108 | { | |
109 | unsigned long flags; | |
110 | ||
111 | local_irq_save(flags); | |
112 | /* | |
113 | * We need to handle two requests being made at the same time. | |
114 | * There are two important cases: | |
b0086efb | 115 | * 1. When we are changing VT (C_REENABLE) while unblanking |
116 | * (C_ENABLE) We must perform the unblanking, which will | |
117 | * do our REENABLE for us. | |
118 | * 2. When we are blanking, but immediately unblank before | |
119 | * we have blanked. We do the "REENABLE" thing here as | |
120 | * well, just to be sure. | |
1da177e4 LT |
121 | */ |
122 | if (fbi->task_state == C_ENABLE && state == C_REENABLE) | |
123 | state = (u_int) -1; | |
124 | if (fbi->task_state == C_DISABLE && state == C_ENABLE) | |
125 | state = C_REENABLE; | |
126 | ||
127 | if (state != (u_int)-1) { | |
128 | fbi->task_state = state; | |
129 | schedule_work(&fbi->task); | |
130 | } | |
131 | local_irq_restore(flags); | |
132 | } | |
133 | ||
134 | static inline u_int chan_to_field(u_int chan, struct fb_bitfield *bf) | |
135 | { | |
136 | chan &= 0xffff; | |
137 | chan >>= 16 - bf->length; | |
138 | return chan << bf->offset; | |
139 | } | |
140 | ||
141 | static int | |
142 | pxafb_setpalettereg(u_int regno, u_int red, u_int green, u_int blue, | |
143 | u_int trans, struct fb_info *info) | |
144 | { | |
29ebebb4 | 145 | struct pxafb_info *fbi = container_of(info, struct pxafb_info, fb); |
9ffa7396 HK |
146 | u_int val; |
147 | ||
148 | if (regno >= fbi->palette_size) | |
149 | return 1; | |
150 | ||
151 | if (fbi->fb.var.grayscale) { | |
152 | fbi->palette_cpu[regno] = ((blue >> 8) & 0x00ff); | |
153 | return 0; | |
154 | } | |
155 | ||
156 | switch (fbi->lccr4 & LCCR4_PAL_FOR_MASK) { | |
157 | case LCCR4_PAL_FOR_0: | |
158 | val = ((red >> 0) & 0xf800); | |
159 | val |= ((green >> 5) & 0x07e0); | |
160 | val |= ((blue >> 11) & 0x001f); | |
1da177e4 | 161 | fbi->palette_cpu[regno] = val; |
9ffa7396 HK |
162 | break; |
163 | case LCCR4_PAL_FOR_1: | |
164 | val = ((red << 8) & 0x00f80000); | |
165 | val |= ((green >> 0) & 0x0000fc00); | |
166 | val |= ((blue >> 8) & 0x000000f8); | |
b0086efb | 167 | ((u32 *)(fbi->palette_cpu))[regno] = val; |
9ffa7396 HK |
168 | break; |
169 | case LCCR4_PAL_FOR_2: | |
170 | val = ((red << 8) & 0x00fc0000); | |
171 | val |= ((green >> 0) & 0x0000fc00); | |
172 | val |= ((blue >> 8) & 0x000000fc); | |
b0086efb | 173 | ((u32 *)(fbi->palette_cpu))[regno] = val; |
9ffa7396 | 174 | break; |
a0427509 EM |
175 | case LCCR4_PAL_FOR_3: |
176 | val = ((red << 8) & 0x00ff0000); | |
177 | val |= ((green >> 0) & 0x0000ff00); | |
178 | val |= ((blue >> 8) & 0x000000ff); | |
179 | ((u32 *)(fbi->palette_cpu))[regno] = val; | |
180 | break; | |
1da177e4 | 181 | } |
9ffa7396 HK |
182 | |
183 | return 0; | |
1da177e4 LT |
184 | } |
185 | ||
186 | static int | |
187 | pxafb_setcolreg(u_int regno, u_int red, u_int green, u_int blue, | |
188 | u_int trans, struct fb_info *info) | |
189 | { | |
29ebebb4 | 190 | struct pxafb_info *fbi = container_of(info, struct pxafb_info, fb); |
1da177e4 LT |
191 | unsigned int val; |
192 | int ret = 1; | |
193 | ||
194 | /* | |
195 | * If inverse mode was selected, invert all the colours | |
196 | * rather than the register number. The register number | |
197 | * is what you poke into the framebuffer to produce the | |
198 | * colour you requested. | |
199 | */ | |
200 | if (fbi->cmap_inverse) { | |
201 | red = 0xffff - red; | |
202 | green = 0xffff - green; | |
203 | blue = 0xffff - blue; | |
204 | } | |
205 | ||
206 | /* | |
207 | * If greyscale is true, then we convert the RGB value | |
208 | * to greyscale no matter what visual we are using. | |
209 | */ | |
210 | if (fbi->fb.var.grayscale) | |
211 | red = green = blue = (19595 * red + 38470 * green + | |
212 | 7471 * blue) >> 16; | |
213 | ||
214 | switch (fbi->fb.fix.visual) { | |
215 | case FB_VISUAL_TRUECOLOR: | |
216 | /* | |
217 | * 16-bit True Colour. We encode the RGB value | |
218 | * according to the RGB bitfield information. | |
219 | */ | |
220 | if (regno < 16) { | |
221 | u32 *pal = fbi->fb.pseudo_palette; | |
222 | ||
223 | val = chan_to_field(red, &fbi->fb.var.red); | |
224 | val |= chan_to_field(green, &fbi->fb.var.green); | |
225 | val |= chan_to_field(blue, &fbi->fb.var.blue); | |
226 | ||
227 | pal[regno] = val; | |
228 | ret = 0; | |
229 | } | |
230 | break; | |
231 | ||
232 | case FB_VISUAL_STATIC_PSEUDOCOLOR: | |
233 | case FB_VISUAL_PSEUDOCOLOR: | |
234 | ret = pxafb_setpalettereg(regno, red, green, blue, trans, info); | |
235 | break; | |
236 | } | |
237 | ||
238 | return ret; | |
239 | } | |
240 | ||
878f5783 EM |
241 | /* calculate pixel depth, transparency bit included, >=16bpp formats _only_ */ |
242 | static inline int var_to_depth(struct fb_var_screeninfo *var) | |
1da177e4 | 243 | { |
878f5783 EM |
244 | return var->red.length + var->green.length + |
245 | var->blue.length + var->transp.length; | |
246 | } | |
247 | ||
248 | /* calculate 4-bit BPP value for LCCR3 and OVLxC1 */ | |
249 | static int pxafb_var_to_bpp(struct fb_var_screeninfo *var) | |
250 | { | |
251 | int bpp = -EINVAL; | |
252 | ||
b0086efb | 253 | switch (var->bits_per_pixel) { |
878f5783 EM |
254 | case 1: bpp = 0; break; |
255 | case 2: bpp = 1; break; | |
256 | case 4: bpp = 2; break; | |
257 | case 8: bpp = 3; break; | |
258 | case 16: bpp = 4; break; | |
c1450f15 | 259 | case 24: |
878f5783 EM |
260 | switch (var_to_depth(var)) { |
261 | case 18: bpp = 6; break; /* 18-bits/pixel packed */ | |
262 | case 19: bpp = 8; break; /* 19-bits/pixel packed */ | |
263 | case 24: bpp = 9; break; | |
c1450f15 SS |
264 | } |
265 | break; | |
266 | case 32: | |
878f5783 EM |
267 | switch (var_to_depth(var)) { |
268 | case 18: bpp = 5; break; /* 18-bits/pixel unpacked */ | |
269 | case 19: bpp = 7; break; /* 19-bits/pixel unpacked */ | |
270 | case 25: bpp = 10; break; | |
c1450f15 SS |
271 | } |
272 | break; | |
b0086efb | 273 | } |
878f5783 EM |
274 | return bpp; |
275 | } | |
276 | ||
277 | /* | |
278 | * pxafb_var_to_lccr3(): | |
279 | * Convert a bits per pixel value to the correct bit pattern for LCCR3 | |
280 | * | |
281 | * NOTE: for PXA27x with overlays support, the LCCR3_PDFOR_x bits have an | |
282 | * implication of the acutal use of transparency bit, which we handle it | |
283 | * here separatedly. See PXA27x Developer's Manual, Section <<7.4.6 Pixel | |
284 | * Formats>> for the valid combination of PDFOR, PAL_FOR for various BPP. | |
285 | * | |
286 | * Transparency for palette pixel formats is not supported at the moment. | |
287 | */ | |
288 | static uint32_t pxafb_var_to_lccr3(struct fb_var_screeninfo *var) | |
289 | { | |
290 | int bpp = pxafb_var_to_bpp(var); | |
291 | uint32_t lccr3; | |
292 | ||
293 | if (bpp < 0) | |
294 | return 0; | |
295 | ||
296 | lccr3 = LCCR3_BPP(bpp); | |
297 | ||
298 | switch (var_to_depth(var)) { | |
299 | case 16: lccr3 |= var->transp.length ? LCCR3_PDFOR_3 : 0; break; | |
300 | case 18: lccr3 |= LCCR3_PDFOR_3; break; | |
301 | case 24: lccr3 |= var->transp.length ? LCCR3_PDFOR_2 : LCCR3_PDFOR_3; | |
302 | break; | |
303 | case 19: | |
304 | case 25: lccr3 |= LCCR3_PDFOR_0; break; | |
305 | } | |
306 | return lccr3; | |
307 | } | |
308 | ||
309 | #define SET_PIXFMT(v, r, g, b, t) \ | |
310 | ({ \ | |
311 | (v)->transp.offset = (t) ? (r) + (g) + (b) : 0; \ | |
312 | (v)->transp.length = (t) ? (t) : 0; \ | |
313 | (v)->blue.length = (b); (v)->blue.offset = 0; \ | |
314 | (v)->green.length = (g); (v)->green.offset = (b); \ | |
315 | (v)->red.length = (r); (v)->red.offset = (b) + (g); \ | |
316 | }) | |
317 | ||
318 | /* set the RGBT bitfields of fb_var_screeninf according to | |
319 | * var->bits_per_pixel and given depth | |
320 | */ | |
321 | static void pxafb_set_pixfmt(struct fb_var_screeninfo *var, int depth) | |
322 | { | |
323 | if (depth == 0) | |
324 | depth = var->bits_per_pixel; | |
325 | ||
326 | if (var->bits_per_pixel < 16) { | |
327 | /* indexed pixel formats */ | |
328 | var->red.offset = 0; var->red.length = 8; | |
329 | var->green.offset = 0; var->green.length = 8; | |
330 | var->blue.offset = 0; var->blue.length = 8; | |
331 | var->transp.offset = 0; var->transp.length = 8; | |
332 | } | |
333 | ||
334 | switch (depth) { | |
335 | case 16: var->transp.length ? | |
336 | SET_PIXFMT(var, 5, 5, 5, 1) : /* RGBT555 */ | |
337 | SET_PIXFMT(var, 5, 6, 5, 0); break; /* RGB565 */ | |
338 | case 18: SET_PIXFMT(var, 6, 6, 6, 0); break; /* RGB666 */ | |
339 | case 19: SET_PIXFMT(var, 6, 6, 6, 1); break; /* RGBT666 */ | |
340 | case 24: var->transp.length ? | |
341 | SET_PIXFMT(var, 8, 8, 7, 1) : /* RGBT887 */ | |
342 | SET_PIXFMT(var, 8, 8, 8, 0); break; /* RGB888 */ | |
343 | case 25: SET_PIXFMT(var, 8, 8, 8, 1); break; /* RGBT888 */ | |
344 | } | |
1da177e4 LT |
345 | } |
346 | ||
347 | #ifdef CONFIG_CPU_FREQ | |
348 | /* | |
349 | * pxafb_display_dma_period() | |
350 | * Calculate the minimum period (in picoseconds) between two DMA | |
351 | * requests for the LCD controller. If we hit this, it means we're | |
352 | * doing nothing but LCD DMA. | |
353 | */ | |
354 | static unsigned int pxafb_display_dma_period(struct fb_var_screeninfo *var) | |
355 | { | |
b0086efb | 356 | /* |
357 | * Period = pixclock * bits_per_byte * bytes_per_transfer | |
358 | * / memory_bits_per_pixel; | |
359 | */ | |
360 | return var->pixclock * 8 * 16 / var->bits_per_pixel; | |
1da177e4 | 361 | } |
1da177e4 LT |
362 | #endif |
363 | ||
d14b272b RP |
364 | /* |
365 | * Select the smallest mode that allows the desired resolution to be | |
366 | * displayed. If desired parameters can be rounded up. | |
367 | */ | |
b0086efb | 368 | static struct pxafb_mode_info *pxafb_getmode(struct pxafb_mach_info *mach, |
369 | struct fb_var_screeninfo *var) | |
d14b272b RP |
370 | { |
371 | struct pxafb_mode_info *mode = NULL; | |
372 | struct pxafb_mode_info *modelist = mach->modes; | |
373 | unsigned int best_x = 0xffffffff, best_y = 0xffffffff; | |
374 | unsigned int i; | |
375 | ||
b0086efb | 376 | for (i = 0; i < mach->num_modes; i++) { |
377 | if (modelist[i].xres >= var->xres && | |
378 | modelist[i].yres >= var->yres && | |
379 | modelist[i].xres < best_x && | |
380 | modelist[i].yres < best_y && | |
381 | modelist[i].bpp >= var->bits_per_pixel) { | |
d14b272b RP |
382 | best_x = modelist[i].xres; |
383 | best_y = modelist[i].yres; | |
384 | mode = &modelist[i]; | |
385 | } | |
386 | } | |
387 | ||
388 | return mode; | |
389 | } | |
390 | ||
b0086efb | 391 | static void pxafb_setmode(struct fb_var_screeninfo *var, |
392 | struct pxafb_mode_info *mode) | |
d14b272b RP |
393 | { |
394 | var->xres = mode->xres; | |
395 | var->yres = mode->yres; | |
396 | var->bits_per_pixel = mode->bpp; | |
397 | var->pixclock = mode->pixclock; | |
398 | var->hsync_len = mode->hsync_len; | |
399 | var->left_margin = mode->left_margin; | |
400 | var->right_margin = mode->right_margin; | |
401 | var->vsync_len = mode->vsync_len; | |
402 | var->upper_margin = mode->upper_margin; | |
403 | var->lower_margin = mode->lower_margin; | |
404 | var->sync = mode->sync; | |
405 | var->grayscale = mode->cmap_greyscale; | |
049ad833 | 406 | var->transp.length = mode->transparency; |
878f5783 EM |
407 | |
408 | /* set the initial RGBA bitfields */ | |
409 | pxafb_set_pixfmt(var, mode->depth); | |
d14b272b RP |
410 | } |
411 | ||
3f16ff60 EM |
412 | static int pxafb_adjust_timing(struct pxafb_info *fbi, |
413 | struct fb_var_screeninfo *var) | |
414 | { | |
415 | int line_length; | |
416 | ||
417 | var->xres = max_t(int, var->xres, MIN_XRES); | |
418 | var->yres = max_t(int, var->yres, MIN_YRES); | |
419 | ||
420 | if (!(fbi->lccr0 & LCCR0_LCDT)) { | |
421 | clamp_val(var->hsync_len, 1, 64); | |
422 | clamp_val(var->vsync_len, 1, 64); | |
423 | clamp_val(var->left_margin, 1, 255); | |
424 | clamp_val(var->right_margin, 1, 255); | |
425 | clamp_val(var->upper_margin, 1, 255); | |
426 | clamp_val(var->lower_margin, 1, 255); | |
427 | } | |
428 | ||
429 | /* make sure each line is aligned on word boundary */ | |
430 | line_length = var->xres * var->bits_per_pixel / 8; | |
431 | line_length = ALIGN(line_length, 4); | |
432 | var->xres = line_length * 8 / var->bits_per_pixel; | |
433 | ||
434 | /* we don't support xpan, force xres_virtual to be equal to xres */ | |
435 | var->xres_virtual = var->xres; | |
436 | ||
437 | if (var->accel_flags & FB_ACCELF_TEXT) | |
438 | var->yres_virtual = fbi->fb.fix.smem_len / line_length; | |
439 | else | |
440 | var->yres_virtual = max(var->yres_virtual, var->yres); | |
441 | ||
442 | /* check for limits */ | |
443 | if (var->xres > MAX_XRES || var->yres > MAX_YRES) | |
444 | return -EINVAL; | |
445 | ||
446 | if (var->yres > var->yres_virtual) | |
447 | return -EINVAL; | |
448 | ||
449 | return 0; | |
d14b272b RP |
450 | } |
451 | ||
1da177e4 LT |
452 | /* |
453 | * pxafb_check_var(): | |
454 | * Get the video params out of 'var'. If a value doesn't fit, round it up, | |
455 | * if it's too big, return -EINVAL. | |
456 | * | |
457 | * Round up in the following order: bits_per_pixel, xres, | |
458 | * yres, xres_virtual, yres_virtual, xoffset, yoffset, grayscale, | |
459 | * bitfields, horizontal timing, vertical timing. | |
460 | */ | |
461 | static int pxafb_check_var(struct fb_var_screeninfo *var, struct fb_info *info) | |
462 | { | |
29ebebb4 | 463 | struct pxafb_info *fbi = container_of(info, struct pxafb_info, fb); |
f3621a60 | 464 | struct pxafb_mach_info *inf = fbi->inf; |
878f5783 | 465 | int err; |
d14b272b RP |
466 | |
467 | if (inf->fixed_modes) { | |
468 | struct pxafb_mode_info *mode; | |
469 | ||
470 | mode = pxafb_getmode(inf, var); | |
471 | if (!mode) | |
472 | return -EINVAL; | |
473 | pxafb_setmode(var, mode); | |
d14b272b RP |
474 | } |
475 | ||
878f5783 EM |
476 | /* do a test conversion to BPP fields to check the color formats */ |
477 | err = pxafb_var_to_bpp(var); | |
478 | if (err < 0) | |
479 | return err; | |
1da177e4 | 480 | |
878f5783 | 481 | pxafb_set_pixfmt(var, var_to_depth(var)); |
c1450f15 | 482 | |
3f16ff60 EM |
483 | err = pxafb_adjust_timing(fbi, var); |
484 | if (err) | |
485 | return err; | |
1da177e4 LT |
486 | |
487 | #ifdef CONFIG_CPU_FREQ | |
78d3cfd3 RK |
488 | pr_debug("pxafb: dma period = %d ps\n", |
489 | pxafb_display_dma_period(var)); | |
1da177e4 LT |
490 | #endif |
491 | ||
492 | return 0; | |
493 | } | |
494 | ||
1da177e4 LT |
495 | /* |
496 | * pxafb_set_par(): | |
497 | * Set the user defined part of the display for the specified console | |
498 | */ | |
499 | static int pxafb_set_par(struct fb_info *info) | |
500 | { | |
29ebebb4 | 501 | struct pxafb_info *fbi = container_of(info, struct pxafb_info, fb); |
1da177e4 | 502 | struct fb_var_screeninfo *var = &info->var; |
1da177e4 | 503 | |
c1450f15 | 504 | if (var->bits_per_pixel >= 16) |
1da177e4 LT |
505 | fbi->fb.fix.visual = FB_VISUAL_TRUECOLOR; |
506 | else if (!fbi->cmap_static) | |
507 | fbi->fb.fix.visual = FB_VISUAL_PSEUDOCOLOR; | |
508 | else { | |
509 | /* | |
510 | * Some people have weird ideas about wanting static | |
511 | * pseudocolor maps. I suspect their user space | |
512 | * applications are broken. | |
513 | */ | |
514 | fbi->fb.fix.visual = FB_VISUAL_STATIC_PSEUDOCOLOR; | |
515 | } | |
516 | ||
517 | fbi->fb.fix.line_length = var->xres_virtual * | |
518 | var->bits_per_pixel / 8; | |
c1450f15 | 519 | if (var->bits_per_pixel >= 16) |
1da177e4 LT |
520 | fbi->palette_size = 0; |
521 | else | |
b0086efb | 522 | fbi->palette_size = var->bits_per_pixel == 1 ? |
523 | 4 : 1 << var->bits_per_pixel; | |
1da177e4 | 524 | |
2c42dd8e | 525 | fbi->palette_cpu = (u16 *)&fbi->dma_buff->palette[0]; |
1da177e4 | 526 | |
c1450f15 | 527 | if (fbi->fb.var.bits_per_pixel >= 16) |
1da177e4 LT |
528 | fb_dealloc_cmap(&fbi->fb.cmap); |
529 | else | |
530 | fb_alloc_cmap(&fbi->fb.cmap, 1<<fbi->fb.var.bits_per_pixel, 0); | |
531 | ||
532 | pxafb_activate_var(var, fbi); | |
533 | ||
534 | return 0; | |
535 | } | |
536 | ||
6e354846 EM |
537 | static int pxafb_pan_display(struct fb_var_screeninfo *var, |
538 | struct fb_info *info) | |
539 | { | |
29ebebb4 | 540 | struct pxafb_info *fbi = container_of(info, struct pxafb_info, fb); |
448ac479 | 541 | struct fb_var_screeninfo newvar; |
6e354846 EM |
542 | int dma = DMA_MAX + DMA_BASE; |
543 | ||
544 | if (fbi->state != C_ENABLE) | |
545 | return 0; | |
546 | ||
448ac479 SN |
547 | /* Only take .xoffset, .yoffset and .vmode & FB_VMODE_YWRAP from what |
548 | * was passed in and copy the rest from the old screeninfo. | |
549 | */ | |
550 | memcpy(&newvar, &fbi->fb.var, sizeof(newvar)); | |
551 | newvar.xoffset = var->xoffset; | |
552 | newvar.yoffset = var->yoffset; | |
553 | newvar.vmode &= ~FB_VMODE_YWRAP; | |
554 | newvar.vmode |= var->vmode & FB_VMODE_YWRAP; | |
555 | ||
556 | setup_base_frame(fbi, &newvar, 1); | |
6e354846 EM |
557 | |
558 | if (fbi->lccr0 & LCCR0_SDS) | |
559 | lcd_writel(fbi, FBR1, fbi->fdadr[dma + 1] | 0x1); | |
560 | ||
561 | lcd_writel(fbi, FBR0, fbi->fdadr[dma] | 0x1); | |
562 | return 0; | |
563 | } | |
564 | ||
1da177e4 LT |
565 | /* |
566 | * pxafb_blank(): | |
567 | * Blank the display by setting all palette values to zero. Note, the | |
568 | * 16 bpp mode does not really use the palette, so this will not | |
569 | * blank the display in all modes. | |
570 | */ | |
571 | static int pxafb_blank(int blank, struct fb_info *info) | |
572 | { | |
29ebebb4 | 573 | struct pxafb_info *fbi = container_of(info, struct pxafb_info, fb); |
1da177e4 LT |
574 | int i; |
575 | ||
1da177e4 LT |
576 | switch (blank) { |
577 | case FB_BLANK_POWERDOWN: | |
578 | case FB_BLANK_VSYNC_SUSPEND: | |
579 | case FB_BLANK_HSYNC_SUSPEND: | |
580 | case FB_BLANK_NORMAL: | |
581 | if (fbi->fb.fix.visual == FB_VISUAL_PSEUDOCOLOR || | |
582 | fbi->fb.fix.visual == FB_VISUAL_STATIC_PSEUDOCOLOR) | |
583 | for (i = 0; i < fbi->palette_size; i++) | |
584 | pxafb_setpalettereg(i, 0, 0, 0, 0, info); | |
585 | ||
586 | pxafb_schedule_work(fbi, C_DISABLE); | |
b0086efb | 587 | /* TODO if (pxafb_blank_helper) pxafb_blank_helper(blank); */ |
1da177e4 LT |
588 | break; |
589 | ||
590 | case FB_BLANK_UNBLANK: | |
b0086efb | 591 | /* TODO if (pxafb_blank_helper) pxafb_blank_helper(blank); */ |
1da177e4 LT |
592 | if (fbi->fb.fix.visual == FB_VISUAL_PSEUDOCOLOR || |
593 | fbi->fb.fix.visual == FB_VISUAL_STATIC_PSEUDOCOLOR) | |
594 | fb_set_cmap(&fbi->fb.cmap, info); | |
595 | pxafb_schedule_work(fbi, C_ENABLE); | |
596 | } | |
597 | return 0; | |
598 | } | |
599 | ||
1da177e4 LT |
600 | static struct fb_ops pxafb_ops = { |
601 | .owner = THIS_MODULE, | |
602 | .fb_check_var = pxafb_check_var, | |
603 | .fb_set_par = pxafb_set_par, | |
6e354846 | 604 | .fb_pan_display = pxafb_pan_display, |
1da177e4 LT |
605 | .fb_setcolreg = pxafb_setcolreg, |
606 | .fb_fillrect = cfb_fillrect, | |
607 | .fb_copyarea = cfb_copyarea, | |
608 | .fb_imageblit = cfb_imageblit, | |
609 | .fb_blank = pxafb_blank, | |
1da177e4 LT |
610 | }; |
611 | ||
198fc108 EM |
612 | #ifdef CONFIG_FB_PXA_OVERLAY |
613 | static void overlay1fb_setup(struct pxafb_layer *ofb) | |
614 | { | |
615 | int size = ofb->fb.fix.line_length * ofb->fb.var.yres_virtual; | |
616 | unsigned long start = ofb->video_mem_phys; | |
617 | setup_frame_dma(ofb->fbi, DMA_OV1, PAL_NONE, start, size); | |
618 | } | |
619 | ||
620 | /* Depending on the enable status of overlay1/2, the DMA should be | |
621 | * updated from FDADRx (when disabled) or FBRx (when enabled). | |
622 | */ | |
623 | static void overlay1fb_enable(struct pxafb_layer *ofb) | |
624 | { | |
625 | int enabled = lcd_readl(ofb->fbi, OVL1C1) & OVLxC1_OEN; | |
626 | uint32_t fdadr1 = ofb->fbi->fdadr[DMA_OV1] | (enabled ? 0x1 : 0); | |
627 | ||
628 | lcd_writel(ofb->fbi, enabled ? FBR1 : FDADR1, fdadr1); | |
629 | lcd_writel(ofb->fbi, OVL1C2, ofb->control[1]); | |
630 | lcd_writel(ofb->fbi, OVL1C1, ofb->control[0] | OVLxC1_OEN); | |
631 | } | |
632 | ||
633 | static void overlay1fb_disable(struct pxafb_layer *ofb) | |
634 | { | |
1b98d7c4 VK |
635 | uint32_t lccr5; |
636 | ||
637 | if (!(lcd_readl(ofb->fbi, OVL1C1) & OVLxC1_OEN)) | |
638 | return; | |
639 | ||
640 | lccr5 = lcd_readl(ofb->fbi, LCCR5); | |
198fc108 EM |
641 | |
642 | lcd_writel(ofb->fbi, OVL1C1, ofb->control[0] & ~OVLxC1_OEN); | |
643 | ||
644 | lcd_writel(ofb->fbi, LCSR1, LCSR1_BS(1)); | |
645 | lcd_writel(ofb->fbi, LCCR5, lccr5 & ~LCSR1_BS(1)); | |
646 | lcd_writel(ofb->fbi, FBR1, ofb->fbi->fdadr[DMA_OV1] | 0x3); | |
647 | ||
648 | if (wait_for_completion_timeout(&ofb->branch_done, 1 * HZ) == 0) | |
6f9655b1 | 649 | pr_warn("%s: timeout disabling overlay1\n", __func__); |
198fc108 EM |
650 | |
651 | lcd_writel(ofb->fbi, LCCR5, lccr5); | |
652 | } | |
653 | ||
654 | static void overlay2fb_setup(struct pxafb_layer *ofb) | |
655 | { | |
656 | int size, div = 1, pfor = NONSTD_TO_PFOR(ofb->fb.var.nonstd); | |
657 | unsigned long start[3] = { ofb->video_mem_phys, 0, 0 }; | |
658 | ||
659 | if (pfor == OVERLAY_FORMAT_RGB || pfor == OVERLAY_FORMAT_YUV444_PACKED) { | |
660 | size = ofb->fb.fix.line_length * ofb->fb.var.yres_virtual; | |
661 | setup_frame_dma(ofb->fbi, DMA_OV2_Y, -1, start[0], size); | |
662 | } else { | |
663 | size = ofb->fb.var.xres_virtual * ofb->fb.var.yres_virtual; | |
664 | switch (pfor) { | |
665 | case OVERLAY_FORMAT_YUV444_PLANAR: div = 1; break; | |
666 | case OVERLAY_FORMAT_YUV422_PLANAR: div = 2; break; | |
667 | case OVERLAY_FORMAT_YUV420_PLANAR: div = 4; break; | |
668 | } | |
669 | start[1] = start[0] + size; | |
670 | start[2] = start[1] + size / div; | |
671 | setup_frame_dma(ofb->fbi, DMA_OV2_Y, -1, start[0], size); | |
672 | setup_frame_dma(ofb->fbi, DMA_OV2_Cb, -1, start[1], size / div); | |
673 | setup_frame_dma(ofb->fbi, DMA_OV2_Cr, -1, start[2], size / div); | |
674 | } | |
675 | } | |
676 | ||
677 | static void overlay2fb_enable(struct pxafb_layer *ofb) | |
678 | { | |
679 | int pfor = NONSTD_TO_PFOR(ofb->fb.var.nonstd); | |
680 | int enabled = lcd_readl(ofb->fbi, OVL2C1) & OVLxC1_OEN; | |
681 | uint32_t fdadr2 = ofb->fbi->fdadr[DMA_OV2_Y] | (enabled ? 0x1 : 0); | |
682 | uint32_t fdadr3 = ofb->fbi->fdadr[DMA_OV2_Cb] | (enabled ? 0x1 : 0); | |
683 | uint32_t fdadr4 = ofb->fbi->fdadr[DMA_OV2_Cr] | (enabled ? 0x1 : 0); | |
684 | ||
685 | if (pfor == OVERLAY_FORMAT_RGB || pfor == OVERLAY_FORMAT_YUV444_PACKED) | |
686 | lcd_writel(ofb->fbi, enabled ? FBR2 : FDADR2, fdadr2); | |
687 | else { | |
688 | lcd_writel(ofb->fbi, enabled ? FBR2 : FDADR2, fdadr2); | |
689 | lcd_writel(ofb->fbi, enabled ? FBR3 : FDADR3, fdadr3); | |
690 | lcd_writel(ofb->fbi, enabled ? FBR4 : FDADR4, fdadr4); | |
691 | } | |
692 | lcd_writel(ofb->fbi, OVL2C2, ofb->control[1]); | |
693 | lcd_writel(ofb->fbi, OVL2C1, ofb->control[0] | OVLxC1_OEN); | |
694 | } | |
695 | ||
696 | static void overlay2fb_disable(struct pxafb_layer *ofb) | |
697 | { | |
1b98d7c4 VK |
698 | uint32_t lccr5; |
699 | ||
700 | if (!(lcd_readl(ofb->fbi, OVL2C1) & OVLxC1_OEN)) | |
701 | return; | |
702 | ||
703 | lccr5 = lcd_readl(ofb->fbi, LCCR5); | |
198fc108 EM |
704 | |
705 | lcd_writel(ofb->fbi, OVL2C1, ofb->control[0] & ~OVLxC1_OEN); | |
706 | ||
707 | lcd_writel(ofb->fbi, LCSR1, LCSR1_BS(2)); | |
708 | lcd_writel(ofb->fbi, LCCR5, lccr5 & ~LCSR1_BS(2)); | |
709 | lcd_writel(ofb->fbi, FBR2, ofb->fbi->fdadr[DMA_OV2_Y] | 0x3); | |
710 | lcd_writel(ofb->fbi, FBR3, ofb->fbi->fdadr[DMA_OV2_Cb] | 0x3); | |
711 | lcd_writel(ofb->fbi, FBR4, ofb->fbi->fdadr[DMA_OV2_Cr] | 0x3); | |
712 | ||
713 | if (wait_for_completion_timeout(&ofb->branch_done, 1 * HZ) == 0) | |
6f9655b1 | 714 | pr_warn("%s: timeout disabling overlay2\n", __func__); |
198fc108 EM |
715 | } |
716 | ||
717 | static struct pxafb_layer_ops ofb_ops[] = { | |
718 | [0] = { | |
719 | .enable = overlay1fb_enable, | |
720 | .disable = overlay1fb_disable, | |
721 | .setup = overlay1fb_setup, | |
722 | }, | |
723 | [1] = { | |
724 | .enable = overlay2fb_enable, | |
725 | .disable = overlay2fb_disable, | |
726 | .setup = overlay2fb_setup, | |
727 | }, | |
728 | }; | |
729 | ||
730 | static int overlayfb_open(struct fb_info *info, int user) | |
731 | { | |
29ebebb4 | 732 | struct pxafb_layer *ofb = container_of(info, struct pxafb_layer, fb); |
198fc108 EM |
733 | |
734 | /* no support for framebuffer console on overlay */ | |
735 | if (user == 0) | |
736 | return -ENODEV; | |
737 | ||
23f13656 | 738 | if (ofb->usage++ == 0) { |
1b98d7c4 | 739 | /* unblank the base framebuffer */ |
23f13656 | 740 | console_lock(); |
1b98d7c4 | 741 | fb_blank(&ofb->fbi->fb, FB_BLANK_UNBLANK); |
23f13656 VK |
742 | console_unlock(); |
743 | } | |
198fc108 | 744 | |
198fc108 EM |
745 | return 0; |
746 | } | |
747 | ||
748 | static int overlayfb_release(struct fb_info *info, int user) | |
749 | { | |
29ebebb4 | 750 | struct pxafb_layer *ofb = container_of(info, struct pxafb_layer, fb); |
198fc108 | 751 | |
1b98d7c4 VK |
752 | if (ofb->usage == 1) { |
753 | ofb->ops->disable(ofb); | |
754 | ofb->fb.var.height = -1; | |
755 | ofb->fb.var.width = -1; | |
756 | ofb->fb.var.xres = ofb->fb.var.xres_virtual = 0; | |
757 | ofb->fb.var.yres = ofb->fb.var.yres_virtual = 0; | |
198fc108 | 758 | |
1b98d7c4 VK |
759 | ofb->usage--; |
760 | } | |
198fc108 EM |
761 | return 0; |
762 | } | |
763 | ||
764 | static int overlayfb_check_var(struct fb_var_screeninfo *var, | |
765 | struct fb_info *info) | |
766 | { | |
29ebebb4 | 767 | struct pxafb_layer *ofb = container_of(info, struct pxafb_layer, fb); |
198fc108 EM |
768 | struct fb_var_screeninfo *base_var = &ofb->fbi->fb.var; |
769 | int xpos, ypos, pfor, bpp; | |
770 | ||
771 | xpos = NONSTD_TO_XPOS(var->nonstd); | |
dcf8eee9 | 772 | ypos = NONSTD_TO_YPOS(var->nonstd); |
198fc108 EM |
773 | pfor = NONSTD_TO_PFOR(var->nonstd); |
774 | ||
775 | bpp = pxafb_var_to_bpp(var); | |
776 | if (bpp < 0) | |
777 | return -EINVAL; | |
778 | ||
779 | /* no support for YUV format on overlay1 */ | |
780 | if (ofb->id == OVERLAY1 && pfor != 0) | |
781 | return -EINVAL; | |
782 | ||
783 | /* for YUV packed formats, bpp = 'minimum bpp of YUV components' */ | |
784 | switch (pfor) { | |
785 | case OVERLAY_FORMAT_RGB: | |
786 | bpp = pxafb_var_to_bpp(var); | |
787 | if (bpp < 0) | |
788 | return -EINVAL; | |
789 | ||
790 | pxafb_set_pixfmt(var, var_to_depth(var)); | |
791 | break; | |
792 | case OVERLAY_FORMAT_YUV444_PACKED: bpp = 24; break; | |
793 | case OVERLAY_FORMAT_YUV444_PLANAR: bpp = 8; break; | |
794 | case OVERLAY_FORMAT_YUV422_PLANAR: bpp = 4; break; | |
795 | case OVERLAY_FORMAT_YUV420_PLANAR: bpp = 2; break; | |
796 | default: | |
797 | return -EINVAL; | |
798 | } | |
799 | ||
800 | /* each line must start at a 32-bit word boundary */ | |
801 | if ((xpos * bpp) % 32) | |
802 | return -EINVAL; | |
803 | ||
804 | /* xres must align on 32-bit word boundary */ | |
805 | var->xres = roundup(var->xres * bpp, 32) / bpp; | |
806 | ||
807 | if ((xpos + var->xres > base_var->xres) || | |
808 | (ypos + var->yres > base_var->yres)) | |
809 | return -EINVAL; | |
810 | ||
811 | var->xres_virtual = var->xres; | |
812 | var->yres_virtual = max(var->yres, var->yres_virtual); | |
813 | return 0; | |
814 | } | |
815 | ||
1b98d7c4 | 816 | static int overlayfb_check_video_memory(struct pxafb_layer *ofb) |
198fc108 EM |
817 | { |
818 | struct fb_var_screeninfo *var = &ofb->fb.var; | |
819 | int pfor = NONSTD_TO_PFOR(var->nonstd); | |
820 | int size, bpp = 0; | |
821 | ||
822 | switch (pfor) { | |
823 | case OVERLAY_FORMAT_RGB: bpp = var->bits_per_pixel; break; | |
824 | case OVERLAY_FORMAT_YUV444_PACKED: bpp = 24; break; | |
825 | case OVERLAY_FORMAT_YUV444_PLANAR: bpp = 24; break; | |
826 | case OVERLAY_FORMAT_YUV422_PLANAR: bpp = 16; break; | |
827 | case OVERLAY_FORMAT_YUV420_PLANAR: bpp = 12; break; | |
828 | } | |
829 | ||
830 | ofb->fb.fix.line_length = var->xres_virtual * bpp / 8; | |
831 | ||
832 | size = PAGE_ALIGN(ofb->fb.fix.line_length * var->yres_virtual); | |
833 | ||
198fc108 EM |
834 | if (ofb->video_mem) { |
835 | if (ofb->video_mem_size >= size) | |
836 | return 0; | |
198fc108 | 837 | } |
1b98d7c4 | 838 | return -EINVAL; |
198fc108 EM |
839 | } |
840 | ||
841 | static int overlayfb_set_par(struct fb_info *info) | |
842 | { | |
29ebebb4 | 843 | struct pxafb_layer *ofb = container_of(info, struct pxafb_layer, fb); |
198fc108 EM |
844 | struct fb_var_screeninfo *var = &info->var; |
845 | int xpos, ypos, pfor, bpp, ret; | |
846 | ||
1b98d7c4 | 847 | ret = overlayfb_check_video_memory(ofb); |
198fc108 EM |
848 | if (ret) |
849 | return ret; | |
850 | ||
851 | bpp = pxafb_var_to_bpp(var); | |
852 | xpos = NONSTD_TO_XPOS(var->nonstd); | |
dcf8eee9 | 853 | ypos = NONSTD_TO_YPOS(var->nonstd); |
198fc108 EM |
854 | pfor = NONSTD_TO_PFOR(var->nonstd); |
855 | ||
856 | ofb->control[0] = OVLxC1_PPL(var->xres) | OVLxC1_LPO(var->yres) | | |
857 | OVLxC1_BPP(bpp); | |
858 | ofb->control[1] = OVLxC2_XPOS(xpos) | OVLxC2_YPOS(ypos); | |
859 | ||
860 | if (ofb->id == OVERLAY2) | |
861 | ofb->control[1] |= OVL2C2_PFOR(pfor); | |
862 | ||
863 | ofb->ops->setup(ofb); | |
864 | ofb->ops->enable(ofb); | |
865 | return 0; | |
866 | } | |
867 | ||
868 | static struct fb_ops overlay_fb_ops = { | |
869 | .owner = THIS_MODULE, | |
870 | .fb_open = overlayfb_open, | |
871 | .fb_release = overlayfb_release, | |
872 | .fb_check_var = overlayfb_check_var, | |
873 | .fb_set_par = overlayfb_set_par, | |
874 | }; | |
875 | ||
48c68c4f GKH |
876 | static void init_pxafb_overlay(struct pxafb_info *fbi, struct pxafb_layer *ofb, |
877 | int id) | |
198fc108 EM |
878 | { |
879 | sprintf(ofb->fb.fix.id, "overlay%d", id + 1); | |
880 | ||
881 | ofb->fb.fix.type = FB_TYPE_PACKED_PIXELS; | |
882 | ofb->fb.fix.xpanstep = 0; | |
883 | ofb->fb.fix.ypanstep = 1; | |
884 | ||
885 | ofb->fb.var.activate = FB_ACTIVATE_NOW; | |
886 | ofb->fb.var.height = -1; | |
887 | ofb->fb.var.width = -1; | |
888 | ofb->fb.var.vmode = FB_VMODE_NONINTERLACED; | |
889 | ||
890 | ofb->fb.fbops = &overlay_fb_ops; | |
891 | ofb->fb.flags = FBINFO_FLAG_DEFAULT; | |
892 | ofb->fb.node = -1; | |
893 | ofb->fb.pseudo_palette = NULL; | |
894 | ||
895 | ofb->id = id; | |
896 | ofb->ops = &ofb_ops[id]; | |
1b98d7c4 | 897 | ofb->usage = 0; |
198fc108 EM |
898 | ofb->fbi = fbi; |
899 | init_completion(&ofb->branch_done); | |
900 | } | |
901 | ||
782385ae EM |
902 | static inline int pxafb_overlay_supported(void) |
903 | { | |
904 | if (cpu_is_pxa27x() || cpu_is_pxa3xx()) | |
905 | return 1; | |
906 | ||
907 | return 0; | |
908 | } | |
909 | ||
48c68c4f GKH |
910 | static int pxafb_overlay_map_video_memory(struct pxafb_info *pxafb, |
911 | struct pxafb_layer *ofb) | |
1b98d7c4 VK |
912 | { |
913 | /* We assume that user will use at most video_mem_size for overlay fb, | |
914 | * anyway, it's useless to use 16bpp main plane and 24bpp overlay | |
915 | */ | |
916 | ofb->video_mem = alloc_pages_exact(PAGE_ALIGN(pxafb->video_mem_size), | |
917 | GFP_KERNEL | __GFP_ZERO); | |
918 | if (ofb->video_mem == NULL) | |
919 | return -ENOMEM; | |
920 | ||
921 | ofb->video_mem_phys = virt_to_phys(ofb->video_mem); | |
922 | ofb->video_mem_size = PAGE_ALIGN(pxafb->video_mem_size); | |
923 | ||
924 | mutex_lock(&ofb->fb.mm_lock); | |
925 | ofb->fb.fix.smem_start = ofb->video_mem_phys; | |
926 | ofb->fb.fix.smem_len = pxafb->video_mem_size; | |
927 | mutex_unlock(&ofb->fb.mm_lock); | |
928 | ||
929 | ofb->fb.screen_base = ofb->video_mem; | |
930 | ||
931 | return 0; | |
932 | } | |
933 | ||
48c68c4f | 934 | static void pxafb_overlay_init(struct pxafb_info *fbi) |
198fc108 EM |
935 | { |
936 | int i, ret; | |
937 | ||
782385ae | 938 | if (!pxafb_overlay_supported()) |
1b98d7c4 | 939 | return; |
782385ae | 940 | |
198fc108 | 941 | for (i = 0; i < 2; i++) { |
1b98d7c4 VK |
942 | struct pxafb_layer *ofb = &fbi->overlay[i]; |
943 | init_pxafb_overlay(fbi, ofb, i); | |
944 | ret = register_framebuffer(&ofb->fb); | |
198fc108 EM |
945 | if (ret) { |
946 | dev_err(fbi->dev, "failed to register overlay %d\n", i); | |
1b98d7c4 VK |
947 | continue; |
948 | } | |
949 | ret = pxafb_overlay_map_video_memory(fbi, ofb); | |
950 | if (ret) { | |
951 | dev_err(fbi->dev, | |
952 | "failed to map video memory for overlay %d\n", | |
953 | i); | |
954 | unregister_framebuffer(&ofb->fb); | |
955 | continue; | |
198fc108 | 956 | } |
1b98d7c4 | 957 | ofb->registered = 1; |
198fc108 EM |
958 | } |
959 | ||
960 | /* mask all IU/BS/EOF/SOF interrupts */ | |
961 | lcd_writel(fbi, LCCR5, ~0); | |
962 | ||
198fc108 | 963 | pr_info("PXA Overlay driver loaded successfully!\n"); |
198fc108 EM |
964 | } |
965 | ||
48c68c4f | 966 | static void pxafb_overlay_exit(struct pxafb_info *fbi) |
198fc108 EM |
967 | { |
968 | int i; | |
969 | ||
782385ae EM |
970 | if (!pxafb_overlay_supported()) |
971 | return; | |
972 | ||
1b98d7c4 VK |
973 | for (i = 0; i < 2; i++) { |
974 | struct pxafb_layer *ofb = &fbi->overlay[i]; | |
975 | if (ofb->registered) { | |
976 | if (ofb->video_mem) | |
977 | free_pages_exact(ofb->video_mem, | |
978 | ofb->video_mem_size); | |
979 | unregister_framebuffer(&ofb->fb); | |
980 | } | |
981 | } | |
198fc108 EM |
982 | } |
983 | #else | |
984 | static inline void pxafb_overlay_init(struct pxafb_info *fbi) {} | |
985 | static inline void pxafb_overlay_exit(struct pxafb_info *fbi) {} | |
986 | #endif /* CONFIG_FB_PXA_OVERLAY */ | |
987 | ||
1da177e4 LT |
988 | /* |
989 | * Calculate the PCD value from the clock rate (in picoseconds). | |
990 | * We take account of the PPCR clock setting. | |
991 | * From PXA Developer's Manual: | |
992 | * | |
993 | * PixelClock = LCLK | |
994 | * ------------- | |
995 | * 2 ( PCD + 1 ) | |
996 | * | |
997 | * PCD = LCLK | |
998 | * ------------- - 1 | |
999 | * 2(PixelClock) | |
1000 | * | |
1001 | * Where: | |
1002 | * LCLK = LCD/Memory Clock | |
1003 | * PCD = LCCR3[7:0] | |
1004 | * | |
1005 | * PixelClock here is in Hz while the pixclock argument given is the | |
1006 | * period in picoseconds. Hence PixelClock = 1 / ( pixclock * 10^-12 ) | |
1007 | * | |
1008 | * The function get_lclk_frequency_10khz returns LCLK in units of | |
1009 | * 10khz. Calling the result of this function lclk gives us the | |
1010 | * following | |
1011 | * | |
1012 | * PCD = (lclk * 10^4 ) * ( pixclock * 10^-12 ) | |
1013 | * -------------------------------------- - 1 | |
1014 | * 2 | |
1015 | * | |
1016 | * Factoring the 10^4 and 10^-12 out gives 10^-8 == 1 / 100000000 as used below. | |
1017 | */ | |
b0086efb | 1018 | static inline unsigned int get_pcd(struct pxafb_info *fbi, |
1019 | unsigned int pixclock) | |
1da177e4 LT |
1020 | { |
1021 | unsigned long long pcd; | |
1022 | ||
1023 | /* FIXME: Need to take into account Double Pixel Clock mode | |
72e3524c RK |
1024 | * (DPC) bit? or perhaps set it based on the various clock |
1025 | * speeds */ | |
1026 | pcd = (unsigned long long)(clk_get_rate(fbi->clk) / 10000); | |
1027 | pcd *= pixclock; | |
bf1b8ab6 | 1028 | do_div(pcd, 100000000 * 2); |
1da177e4 LT |
1029 | /* no need for this, since we should subtract 1 anyway. they cancel */ |
1030 | /* pcd += 1; */ /* make up for integer math truncations */ | |
1031 | return (unsigned int)pcd; | |
1032 | } | |
1033 | ||
ba44cd2d RP |
1034 | /* |
1035 | * Some touchscreens need hsync information from the video driver to | |
72e3524c RK |
1036 | * function correctly. We export it here. Note that 'hsync_time' and |
1037 | * the value returned from pxafb_get_hsync_time() is the *reciprocal* | |
1038 | * of the hsync period in seconds. | |
ba44cd2d RP |
1039 | */ |
1040 | static inline void set_hsync_time(struct pxafb_info *fbi, unsigned int pcd) | |
1041 | { | |
72e3524c | 1042 | unsigned long htime; |
ba44cd2d RP |
1043 | |
1044 | if ((pcd == 0) || (fbi->fb.var.hsync_len == 0)) { | |
b0086efb | 1045 | fbi->hsync_time = 0; |
ba44cd2d RP |
1046 | return; |
1047 | } | |
1048 | ||
72e3524c RK |
1049 | htime = clk_get_rate(fbi->clk) / (pcd * fbi->fb.var.hsync_len); |
1050 | ||
ba44cd2d RP |
1051 | fbi->hsync_time = htime; |
1052 | } | |
1053 | ||
1054 | unsigned long pxafb_get_hsync_time(struct device *dev) | |
1055 | { | |
1056 | struct pxafb_info *fbi = dev_get_drvdata(dev); | |
1057 | ||
1058 | /* If display is blanked/suspended, hsync isn't active */ | |
1059 | if (!fbi || (fbi->state != C_ENABLE)) | |
1060 | return 0; | |
1061 | ||
1062 | return fbi->hsync_time; | |
1063 | } | |
1064 | EXPORT_SYMBOL(pxafb_get_hsync_time); | |
1065 | ||
2c42dd8e | 1066 | static int setup_frame_dma(struct pxafb_info *fbi, int dma, int pal, |
198fc108 | 1067 | unsigned long start, size_t size) |
2c42dd8e | 1068 | { |
1069 | struct pxafb_dma_descriptor *dma_desc, *pal_desc; | |
1070 | unsigned int dma_desc_off, pal_desc_off; | |
1071 | ||
6e354846 | 1072 | if (dma < 0 || dma >= DMA_MAX * 2) |
2c42dd8e | 1073 | return -EINVAL; |
1074 | ||
1075 | dma_desc = &fbi->dma_buff->dma_desc[dma]; | |
1076 | dma_desc_off = offsetof(struct pxafb_dma_buff, dma_desc[dma]); | |
1077 | ||
198fc108 | 1078 | dma_desc->fsadr = start; |
2c42dd8e | 1079 | dma_desc->fidr = 0; |
1080 | dma_desc->ldcmd = size; | |
1081 | ||
6e354846 | 1082 | if (pal < 0 || pal >= PAL_MAX * 2) { |
2c42dd8e | 1083 | dma_desc->fdadr = fbi->dma_buff_phys + dma_desc_off; |
1084 | fbi->fdadr[dma] = fbi->dma_buff_phys + dma_desc_off; | |
1085 | } else { | |
62cfcf4f JS |
1086 | pal_desc = &fbi->dma_buff->pal_desc[pal]; |
1087 | pal_desc_off = offsetof(struct pxafb_dma_buff, pal_desc[pal]); | |
2c42dd8e | 1088 | |
1089 | pal_desc->fsadr = fbi->dma_buff_phys + pal * PALETTE_SIZE; | |
1090 | pal_desc->fidr = 0; | |
1091 | ||
1092 | if ((fbi->lccr4 & LCCR4_PAL_FOR_MASK) == LCCR4_PAL_FOR_0) | |
1093 | pal_desc->ldcmd = fbi->palette_size * sizeof(u16); | |
1094 | else | |
1095 | pal_desc->ldcmd = fbi->palette_size * sizeof(u32); | |
1096 | ||
1097 | pal_desc->ldcmd |= LDCMD_PAL; | |
1098 | ||
1099 | /* flip back and forth between palette and frame buffer */ | |
1100 | pal_desc->fdadr = fbi->dma_buff_phys + dma_desc_off; | |
1101 | dma_desc->fdadr = fbi->dma_buff_phys + pal_desc_off; | |
1102 | fbi->fdadr[dma] = fbi->dma_buff_phys + dma_desc_off; | |
1103 | } | |
1104 | ||
1105 | return 0; | |
1106 | } | |
1107 | ||
448ac479 SN |
1108 | static void setup_base_frame(struct pxafb_info *fbi, |
1109 | struct fb_var_screeninfo *var, | |
1110 | int branch) | |
6e354846 | 1111 | { |
6e354846 | 1112 | struct fb_fix_screeninfo *fix = &fbi->fb.fix; |
198fc108 EM |
1113 | int nbytes, dma, pal, bpp = var->bits_per_pixel; |
1114 | unsigned long offset; | |
6e354846 EM |
1115 | |
1116 | dma = DMA_BASE + (branch ? DMA_MAX : 0); | |
1117 | pal = (bpp >= 16) ? PAL_NONE : PAL_BASE + (branch ? PAL_MAX : 0); | |
1118 | ||
1119 | nbytes = fix->line_length * var->yres; | |
198fc108 | 1120 | offset = fix->line_length * var->yoffset + fbi->video_mem_phys; |
6e354846 EM |
1121 | |
1122 | if (fbi->lccr0 & LCCR0_SDS) { | |
1123 | nbytes = nbytes / 2; | |
1124 | setup_frame_dma(fbi, dma + 1, PAL_NONE, offset + nbytes, nbytes); | |
1125 | } | |
1126 | ||
1127 | setup_frame_dma(fbi, dma, pal, offset, nbytes); | |
1128 | } | |
1129 | ||
3c42a449 EM |
1130 | #ifdef CONFIG_FB_PXA_SMARTPANEL |
1131 | static int setup_smart_dma(struct pxafb_info *fbi) | |
1132 | { | |
1133 | struct pxafb_dma_descriptor *dma_desc; | |
1134 | unsigned long dma_desc_off, cmd_buff_off; | |
1135 | ||
1136 | dma_desc = &fbi->dma_buff->dma_desc[DMA_CMD]; | |
1137 | dma_desc_off = offsetof(struct pxafb_dma_buff, dma_desc[DMA_CMD]); | |
1138 | cmd_buff_off = offsetof(struct pxafb_dma_buff, cmd_buff); | |
1139 | ||
1140 | dma_desc->fdadr = fbi->dma_buff_phys + dma_desc_off; | |
1141 | dma_desc->fsadr = fbi->dma_buff_phys + cmd_buff_off; | |
1142 | dma_desc->fidr = 0; | |
1143 | dma_desc->ldcmd = fbi->n_smart_cmds * sizeof(uint16_t); | |
1144 | ||
1145 | fbi->fdadr[DMA_CMD] = dma_desc->fdadr; | |
1146 | return 0; | |
1147 | } | |
1148 | ||
1149 | int pxafb_smart_flush(struct fb_info *info) | |
1150 | { | |
1151 | struct pxafb_info *fbi = container_of(info, struct pxafb_info, fb); | |
1152 | uint32_t prsr; | |
1153 | int ret = 0; | |
1154 | ||
1155 | /* disable controller until all registers are set up */ | |
1156 | lcd_writel(fbi, LCCR0, fbi->reg_lccr0 & ~LCCR0_ENB); | |
1157 | ||
1158 | /* 1. make it an even number of commands to align on 32-bit boundary | |
1159 | * 2. add the interrupt command to the end of the chain so we can | |
1160 | * keep track of the end of the transfer | |
1161 | */ | |
1162 | ||
1163 | while (fbi->n_smart_cmds & 1) | |
1164 | fbi->smart_cmds[fbi->n_smart_cmds++] = SMART_CMD_NOOP; | |
1165 | ||
1166 | fbi->smart_cmds[fbi->n_smart_cmds++] = SMART_CMD_INTERRUPT; | |
1167 | fbi->smart_cmds[fbi->n_smart_cmds++] = SMART_CMD_WAIT_FOR_VSYNC; | |
1168 | setup_smart_dma(fbi); | |
1169 | ||
1170 | /* continue to execute next command */ | |
1171 | prsr = lcd_readl(fbi, PRSR) | PRSR_ST_OK | PRSR_CON_NT; | |
1172 | lcd_writel(fbi, PRSR, prsr); | |
1173 | ||
1174 | /* stop the processor in case it executed "wait for sync" cmd */ | |
1175 | lcd_writel(fbi, CMDCR, 0x0001); | |
1176 | ||
1177 | /* don't send interrupts for fifo underruns on channel 6 */ | |
1178 | lcd_writel(fbi, LCCR5, LCCR5_IUM(6)); | |
1179 | ||
1180 | lcd_writel(fbi, LCCR1, fbi->reg_lccr1); | |
1181 | lcd_writel(fbi, LCCR2, fbi->reg_lccr2); | |
1182 | lcd_writel(fbi, LCCR3, fbi->reg_lccr3); | |
a0427509 | 1183 | lcd_writel(fbi, LCCR4, fbi->reg_lccr4); |
3c42a449 EM |
1184 | lcd_writel(fbi, FDADR0, fbi->fdadr[0]); |
1185 | lcd_writel(fbi, FDADR6, fbi->fdadr[6]); | |
1186 | ||
1187 | /* begin sending */ | |
1188 | lcd_writel(fbi, LCCR0, fbi->reg_lccr0 | LCCR0_ENB); | |
1189 | ||
1190 | if (wait_for_completion_timeout(&fbi->command_done, HZ/2) == 0) { | |
6f9655b1 | 1191 | pr_warn("%s: timeout waiting for command done\n", __func__); |
3c42a449 EM |
1192 | ret = -ETIMEDOUT; |
1193 | } | |
1194 | ||
1195 | /* quick disable */ | |
1196 | prsr = lcd_readl(fbi, PRSR) & ~(PRSR_ST_OK | PRSR_CON_NT); | |
1197 | lcd_writel(fbi, PRSR, prsr); | |
1198 | lcd_writel(fbi, LCCR0, fbi->reg_lccr0 & ~LCCR0_ENB); | |
1199 | lcd_writel(fbi, FDADR6, 0); | |
1200 | fbi->n_smart_cmds = 0; | |
1201 | return ret; | |
1202 | } | |
1203 | ||
1204 | int pxafb_smart_queue(struct fb_info *info, uint16_t *cmds, int n_cmds) | |
1205 | { | |
1206 | int i; | |
1207 | struct pxafb_info *fbi = container_of(info, struct pxafb_info, fb); | |
1208 | ||
69bdea70 EM |
1209 | for (i = 0; i < n_cmds; i++, cmds++) { |
1210 | /* if it is a software delay, flush and delay */ | |
1211 | if ((*cmds & 0xff00) == SMART_CMD_DELAY) { | |
1212 | pxafb_smart_flush(info); | |
1213 | mdelay(*cmds & 0xff); | |
1214 | continue; | |
1215 | } | |
1216 | ||
1217 | /* leave 2 commands for INTERRUPT and WAIT_FOR_SYNC */ | |
3c42a449 EM |
1218 | if (fbi->n_smart_cmds == CMD_BUFF_SIZE - 8) |
1219 | pxafb_smart_flush(info); | |
1220 | ||
69bdea70 | 1221 | fbi->smart_cmds[fbi->n_smart_cmds++] = *cmds; |
3c42a449 EM |
1222 | } |
1223 | ||
1224 | return 0; | |
1225 | } | |
1226 | ||
1227 | static unsigned int __smart_timing(unsigned time_ns, unsigned long lcd_clk) | |
1228 | { | |
1229 | unsigned int t = (time_ns * (lcd_clk / 1000000) / 1000); | |
1230 | return (t == 0) ? 1 : t; | |
1231 | } | |
1232 | ||
1233 | static void setup_smart_timing(struct pxafb_info *fbi, | |
1234 | struct fb_var_screeninfo *var) | |
1235 | { | |
f3621a60 | 1236 | struct pxafb_mach_info *inf = fbi->inf; |
3c42a449 EM |
1237 | struct pxafb_mode_info *mode = &inf->modes[0]; |
1238 | unsigned long lclk = clk_get_rate(fbi->clk); | |
1239 | unsigned t1, t2, t3, t4; | |
1240 | ||
1241 | t1 = max(mode->a0csrd_set_hld, mode->a0cswr_set_hld); | |
1242 | t2 = max(mode->rd_pulse_width, mode->wr_pulse_width); | |
1243 | t3 = mode->op_hold_time; | |
1244 | t4 = mode->cmd_inh_time; | |
1245 | ||
1246 | fbi->reg_lccr1 = | |
1247 | LCCR1_DisWdth(var->xres) | | |
1248 | LCCR1_BegLnDel(__smart_timing(t1, lclk)) | | |
1249 | LCCR1_EndLnDel(__smart_timing(t2, lclk)) | | |
1250 | LCCR1_HorSnchWdth(__smart_timing(t3, lclk)); | |
1251 | ||
1252 | fbi->reg_lccr2 = LCCR2_DisHght(var->yres); | |
c1f99c21 EM |
1253 | fbi->reg_lccr3 = fbi->lccr3 | LCCR3_PixClkDiv(__smart_timing(t4, lclk)); |
1254 | fbi->reg_lccr3 |= (var->sync & FB_SYNC_HOR_HIGH_ACT) ? LCCR3_HSP : 0; | |
1255 | fbi->reg_lccr3 |= (var->sync & FB_SYNC_VERT_HIGH_ACT) ? LCCR3_VSP : 0; | |
3c42a449 EM |
1256 | |
1257 | /* FIXME: make this configurable */ | |
1258 | fbi->reg_cmdcr = 1; | |
1259 | } | |
1260 | ||
1261 | static int pxafb_smart_thread(void *arg) | |
1262 | { | |
7f1133cb | 1263 | struct pxafb_info *fbi = arg; |
f3621a60 | 1264 | struct pxafb_mach_info *inf = fbi->inf; |
3c42a449 | 1265 | |
da2c3f0e | 1266 | if (!inf->smart_update) { |
3c42a449 EM |
1267 | pr_err("%s: not properly initialized, thread terminated\n", |
1268 | __func__); | |
1269 | return -EINVAL; | |
1270 | } | |
1271 | ||
1272 | pr_debug("%s(): task starting\n", __func__); | |
1273 | ||
1274 | set_freezable(); | |
1275 | while (!kthread_should_stop()) { | |
1276 | ||
1277 | if (try_to_freeze()) | |
1278 | continue; | |
1279 | ||
07f651c7 EM |
1280 | mutex_lock(&fbi->ctrlr_lock); |
1281 | ||
3c42a449 EM |
1282 | if (fbi->state == C_ENABLE) { |
1283 | inf->smart_update(&fbi->fb); | |
1284 | complete(&fbi->refresh_done); | |
1285 | } | |
1286 | ||
07f651c7 EM |
1287 | mutex_unlock(&fbi->ctrlr_lock); |
1288 | ||
3c42a449 | 1289 | set_current_state(TASK_INTERRUPTIBLE); |
17713ce0 | 1290 | schedule_timeout(msecs_to_jiffies(30)); |
3c42a449 EM |
1291 | } |
1292 | ||
1293 | pr_debug("%s(): task ending\n", __func__); | |
1294 | return 0; | |
1295 | } | |
1296 | ||
1297 | static int pxafb_smart_init(struct pxafb_info *fbi) | |
1298 | { | |
07df1c4f | 1299 | if (!(fbi->lccr0 & LCCR0_LCDT)) |
6cc4abe4 EM |
1300 | return 0; |
1301 | ||
07df1c4f EM |
1302 | fbi->smart_cmds = (uint16_t *) fbi->dma_buff->cmd_buff; |
1303 | fbi->n_smart_cmds = 0; | |
1304 | ||
1305 | init_completion(&fbi->command_done); | |
1306 | init_completion(&fbi->refresh_done); | |
1307 | ||
3c42a449 EM |
1308 | fbi->smart_thread = kthread_run(pxafb_smart_thread, fbi, |
1309 | "lcd_refresh"); | |
1310 | if (IS_ERR(fbi->smart_thread)) { | |
07df1c4f | 1311 | pr_err("%s: unable to create kernel thread\n", __func__); |
3c42a449 EM |
1312 | return PTR_ERR(fbi->smart_thread); |
1313 | } | |
a5718a14 | 1314 | |
3c42a449 EM |
1315 | return 0; |
1316 | } | |
1317 | #else | |
07df1c4f EM |
1318 | static inline int pxafb_smart_init(struct pxafb_info *fbi) { return 0; } |
1319 | #endif /* CONFIG_FB_PXA_SMARTPANEL */ | |
3c42a449 | 1320 | |
90eabbf0 EM |
1321 | static void setup_parallel_timing(struct pxafb_info *fbi, |
1322 | struct fb_var_screeninfo *var) | |
1323 | { | |
1324 | unsigned int lines_per_panel, pcd = get_pcd(fbi, var->pixclock); | |
1325 | ||
1326 | fbi->reg_lccr1 = | |
1327 | LCCR1_DisWdth(var->xres) + | |
1328 | LCCR1_HorSnchWdth(var->hsync_len) + | |
1329 | LCCR1_BegLnDel(var->left_margin) + | |
1330 | LCCR1_EndLnDel(var->right_margin); | |
1331 | ||
1332 | /* | |
1333 | * If we have a dual scan LCD, we need to halve | |
1334 | * the YRES parameter. | |
1335 | */ | |
1336 | lines_per_panel = var->yres; | |
1337 | if ((fbi->lccr0 & LCCR0_SDS) == LCCR0_Dual) | |
1338 | lines_per_panel /= 2; | |
1339 | ||
1340 | fbi->reg_lccr2 = | |
1341 | LCCR2_DisHght(lines_per_panel) + | |
1342 | LCCR2_VrtSnchWdth(var->vsync_len) + | |
1343 | LCCR2_BegFrmDel(var->upper_margin) + | |
1344 | LCCR2_EndFrmDel(var->lower_margin); | |
1345 | ||
1346 | fbi->reg_lccr3 = fbi->lccr3 | | |
1347 | (var->sync & FB_SYNC_HOR_HIGH_ACT ? | |
1348 | LCCR3_HorSnchH : LCCR3_HorSnchL) | | |
1349 | (var->sync & FB_SYNC_VERT_HIGH_ACT ? | |
1350 | LCCR3_VrtSnchH : LCCR3_VrtSnchL); | |
1351 | ||
1352 | if (pcd) { | |
1353 | fbi->reg_lccr3 |= LCCR3_PixClkDiv(pcd); | |
1354 | set_hsync_time(fbi, pcd); | |
1355 | } | |
1356 | } | |
1357 | ||
1da177e4 LT |
1358 | /* |
1359 | * pxafb_activate_var(): | |
b0086efb | 1360 | * Configures LCD Controller based on entries in var parameter. |
1361 | * Settings are only written to the controller if changes were made. | |
1da177e4 | 1362 | */ |
b0086efb | 1363 | static int pxafb_activate_var(struct fb_var_screeninfo *var, |
1364 | struct pxafb_info *fbi) | |
1da177e4 | 1365 | { |
1da177e4 | 1366 | u_long flags; |
1da177e4 | 1367 | |
90eabbf0 EM |
1368 | /* Update shadow copy atomically */ |
1369 | local_irq_save(flags); | |
1da177e4 | 1370 | |
3c42a449 EM |
1371 | #ifdef CONFIG_FB_PXA_SMARTPANEL |
1372 | if (fbi->lccr0 & LCCR0_LCDT) | |
1373 | setup_smart_timing(fbi, var); | |
1374 | else | |
1375 | #endif | |
1376 | setup_parallel_timing(fbi, var); | |
90eabbf0 | 1377 | |
448ac479 | 1378 | setup_base_frame(fbi, var, 0); |
6e354846 | 1379 | |
90eabbf0 | 1380 | fbi->reg_lccr0 = fbi->lccr0 | |
1da177e4 | 1381 | (LCCR0_LDM | LCCR0_SFM | LCCR0_IUM | LCCR0_EFM | |
b0086efb | 1382 | LCCR0_QDM | LCCR0_BM | LCCR0_OUM); |
1da177e4 | 1383 | |
878f5783 | 1384 | fbi->reg_lccr3 |= pxafb_var_to_lccr3(var); |
1da177e4 | 1385 | |
a7535ba7 | 1386 | fbi->reg_lccr4 = lcd_readl(fbi, LCCR4) & ~LCCR4_PAL_FOR_MASK; |
9ffa7396 | 1387 | fbi->reg_lccr4 |= (fbi->lccr4 & LCCR4_PAL_FOR_MASK); |
1da177e4 LT |
1388 | local_irq_restore(flags); |
1389 | ||
1390 | /* | |
1391 | * Only update the registers if the controller is enabled | |
1392 | * and something has changed. | |
1393 | */ | |
a7535ba7 EM |
1394 | if ((lcd_readl(fbi, LCCR0) != fbi->reg_lccr0) || |
1395 | (lcd_readl(fbi, LCCR1) != fbi->reg_lccr1) || | |
1396 | (lcd_readl(fbi, LCCR2) != fbi->reg_lccr2) || | |
1397 | (lcd_readl(fbi, LCCR3) != fbi->reg_lccr3) || | |
a0427509 | 1398 | (lcd_readl(fbi, LCCR4) != fbi->reg_lccr4) || |
a7535ba7 | 1399 | (lcd_readl(fbi, FDADR0) != fbi->fdadr[0]) || |
1b98d7c4 VK |
1400 | ((fbi->lccr0 & LCCR0_SDS) && |
1401 | (lcd_readl(fbi, FDADR1) != fbi->fdadr[1]))) | |
1da177e4 LT |
1402 | pxafb_schedule_work(fbi, C_REENABLE); |
1403 | ||
1404 | return 0; | |
1405 | } | |
1406 | ||
1407 | /* | |
1408 | * NOTE! The following functions are purely helpers for set_ctrlr_state. | |
1409 | * Do not call them directly; set_ctrlr_state does the correct serialisation | |
1410 | * to ensure that things happen in the right way 100% of time time. | |
1411 | * -- rmk | |
1412 | */ | |
1413 | static inline void __pxafb_backlight_power(struct pxafb_info *fbi, int on) | |
1414 | { | |
ca5da710 | 1415 | pr_debug("pxafb: backlight o%s\n", on ? "n" : "ff"); |
1da177e4 | 1416 | |
a5718a14 EM |
1417 | if (fbi->backlight_power) |
1418 | fbi->backlight_power(on); | |
1da177e4 LT |
1419 | } |
1420 | ||
1421 | static inline void __pxafb_lcd_power(struct pxafb_info *fbi, int on) | |
1422 | { | |
ca5da710 | 1423 | pr_debug("pxafb: LCD power o%s\n", on ? "n" : "ff"); |
1da177e4 | 1424 | |
a5718a14 EM |
1425 | if (fbi->lcd_power) |
1426 | fbi->lcd_power(on, &fbi->fb.var); | |
31e1391a DM |
1427 | |
1428 | if (fbi->lcd_supply && fbi->lcd_supply_enabled != on) { | |
1429 | int ret; | |
1430 | ||
1431 | if (on) | |
1432 | ret = regulator_enable(fbi->lcd_supply); | |
1433 | else | |
1434 | ret = regulator_disable(fbi->lcd_supply); | |
1435 | ||
1436 | if (ret < 0) | |
1437 | pr_warn("Unable to %s LCD supply regulator: %d\n", | |
1438 | on ? "enable" : "disable", ret); | |
1439 | else | |
1440 | fbi->lcd_supply_enabled = on; | |
1441 | } | |
1da177e4 LT |
1442 | } |
1443 | ||
1da177e4 LT |
1444 | static void pxafb_enable_controller(struct pxafb_info *fbi) |
1445 | { | |
ca5da710 | 1446 | pr_debug("pxafb: Enabling LCD controller\n"); |
2c42dd8e | 1447 | pr_debug("fdadr0 0x%08x\n", (unsigned int) fbi->fdadr[0]); |
1448 | pr_debug("fdadr1 0x%08x\n", (unsigned int) fbi->fdadr[1]); | |
ca5da710 RK |
1449 | pr_debug("reg_lccr0 0x%08x\n", (unsigned int) fbi->reg_lccr0); |
1450 | pr_debug("reg_lccr1 0x%08x\n", (unsigned int) fbi->reg_lccr1); | |
1451 | pr_debug("reg_lccr2 0x%08x\n", (unsigned int) fbi->reg_lccr2); | |
1452 | pr_debug("reg_lccr3 0x%08x\n", (unsigned int) fbi->reg_lccr3); | |
1da177e4 | 1453 | |
8d372266 | 1454 | /* enable LCD controller clock */ |
86388d83 AY |
1455 | if (clk_prepare_enable(fbi->clk)) { |
1456 | pr_err("%s: Failed to prepare clock\n", __func__); | |
1457 | return; | |
1458 | } | |
8d372266 | 1459 | |
3c42a449 EM |
1460 | if (fbi->lccr0 & LCCR0_LCDT) |
1461 | return; | |
1462 | ||
1da177e4 | 1463 | /* Sequence from 11.7.10 */ |
a0427509 | 1464 | lcd_writel(fbi, LCCR4, fbi->reg_lccr4); |
a7535ba7 EM |
1465 | lcd_writel(fbi, LCCR3, fbi->reg_lccr3); |
1466 | lcd_writel(fbi, LCCR2, fbi->reg_lccr2); | |
1467 | lcd_writel(fbi, LCCR1, fbi->reg_lccr1); | |
1468 | lcd_writel(fbi, LCCR0, fbi->reg_lccr0 & ~LCCR0_ENB); | |
1469 | ||
1470 | lcd_writel(fbi, FDADR0, fbi->fdadr[0]); | |
1b98d7c4 VK |
1471 | if (fbi->lccr0 & LCCR0_SDS) |
1472 | lcd_writel(fbi, FDADR1, fbi->fdadr[1]); | |
a7535ba7 | 1473 | lcd_writel(fbi, LCCR0, fbi->reg_lccr0 | LCCR0_ENB); |
1da177e4 LT |
1474 | } |
1475 | ||
1476 | static void pxafb_disable_controller(struct pxafb_info *fbi) | |
1477 | { | |
ce4fb7b8 | 1478 | uint32_t lccr0; |
1479 | ||
3c42a449 EM |
1480 | #ifdef CONFIG_FB_PXA_SMARTPANEL |
1481 | if (fbi->lccr0 & LCCR0_LCDT) { | |
1482 | wait_for_completion_timeout(&fbi->refresh_done, | |
17713ce0 | 1483 | msecs_to_jiffies(200)); |
3c42a449 EM |
1484 | return; |
1485 | } | |
1486 | #endif | |
1487 | ||
ce4fb7b8 | 1488 | /* Clear LCD Status Register */ |
a7535ba7 | 1489 | lcd_writel(fbi, LCSR, 0xffffffff); |
ce4fb7b8 | 1490 | |
a7535ba7 EM |
1491 | lccr0 = lcd_readl(fbi, LCCR0) & ~LCCR0_LDM; |
1492 | lcd_writel(fbi, LCCR0, lccr0); | |
1493 | lcd_writel(fbi, LCCR0, lccr0 | LCCR0_DIS); | |
1da177e4 | 1494 | |
17713ce0 | 1495 | wait_for_completion_timeout(&fbi->disable_done, msecs_to_jiffies(200)); |
8d372266 NP |
1496 | |
1497 | /* disable LCD controller clock */ | |
b622f1b5 | 1498 | clk_disable_unprepare(fbi->clk); |
1da177e4 LT |
1499 | } |
1500 | ||
1501 | /* | |
1502 | * pxafb_handle_irq: Handle 'LCD DONE' interrupts. | |
1503 | */ | |
7d12e780 | 1504 | static irqreturn_t pxafb_handle_irq(int irq, void *dev_id) |
1da177e4 LT |
1505 | { |
1506 | struct pxafb_info *fbi = dev_id; | |
ff14ed5d | 1507 | unsigned int lccr0, lcsr; |
1da177e4 | 1508 | |
198fc108 | 1509 | lcsr = lcd_readl(fbi, LCSR); |
1da177e4 | 1510 | if (lcsr & LCSR_LDD) { |
a7535ba7 EM |
1511 | lccr0 = lcd_readl(fbi, LCCR0); |
1512 | lcd_writel(fbi, LCCR0, lccr0 | LCCR0_LDM); | |
2ba162b9 | 1513 | complete(&fbi->disable_done); |
1da177e4 LT |
1514 | } |
1515 | ||
3c42a449 EM |
1516 | #ifdef CONFIG_FB_PXA_SMARTPANEL |
1517 | if (lcsr & LCSR_CMD_INT) | |
1518 | complete(&fbi->command_done); | |
1519 | #endif | |
a7535ba7 | 1520 | lcd_writel(fbi, LCSR, lcsr); |
198fc108 EM |
1521 | |
1522 | #ifdef CONFIG_FB_PXA_OVERLAY | |
ff14ed5d DL |
1523 | { |
1524 | unsigned int lcsr1 = lcd_readl(fbi, LCSR1); | |
1525 | if (lcsr1 & LCSR1_BS(1)) | |
1526 | complete(&fbi->overlay[0].branch_done); | |
198fc108 | 1527 | |
ff14ed5d DL |
1528 | if (lcsr1 & LCSR1_BS(2)) |
1529 | complete(&fbi->overlay[1].branch_done); | |
198fc108 | 1530 | |
ff14ed5d DL |
1531 | lcd_writel(fbi, LCSR1, lcsr1); |
1532 | } | |
198fc108 | 1533 | #endif |
1da177e4 LT |
1534 | return IRQ_HANDLED; |
1535 | } | |
1536 | ||
1537 | /* | |
1538 | * This function must be called from task context only, since it will | |
1539 | * sleep when disabling the LCD controller, or if we get two contending | |
1540 | * processes trying to alter state. | |
1541 | */ | |
1542 | static void set_ctrlr_state(struct pxafb_info *fbi, u_int state) | |
1543 | { | |
1544 | u_int old_state; | |
1545 | ||
b91dbce5 | 1546 | mutex_lock(&fbi->ctrlr_lock); |
1da177e4 LT |
1547 | |
1548 | old_state = fbi->state; | |
1549 | ||
1550 | /* | |
1551 | * Hack around fbcon initialisation. | |
1552 | */ | |
1553 | if (old_state == C_STARTUP && state == C_REENABLE) | |
1554 | state = C_ENABLE; | |
1555 | ||
1556 | switch (state) { | |
1557 | case C_DISABLE_CLKCHANGE: | |
1558 | /* | |
1559 | * Disable controller for clock change. If the | |
1560 | * controller is already disabled, then do nothing. | |
1561 | */ | |
1562 | if (old_state != C_DISABLE && old_state != C_DISABLE_PM) { | |
1563 | fbi->state = state; | |
b0086efb | 1564 | /* TODO __pxafb_lcd_power(fbi, 0); */ |
1da177e4 LT |
1565 | pxafb_disable_controller(fbi); |
1566 | } | |
1567 | break; | |
1568 | ||
1569 | case C_DISABLE_PM: | |
1570 | case C_DISABLE: | |
1571 | /* | |
1572 | * Disable controller | |
1573 | */ | |
1574 | if (old_state != C_DISABLE) { | |
1575 | fbi->state = state; | |
1576 | __pxafb_backlight_power(fbi, 0); | |
1577 | __pxafb_lcd_power(fbi, 0); | |
1578 | if (old_state != C_DISABLE_CLKCHANGE) | |
1579 | pxafb_disable_controller(fbi); | |
1580 | } | |
1581 | break; | |
1582 | ||
1583 | case C_ENABLE_CLKCHANGE: | |
1584 | /* | |
1585 | * Enable the controller after clock change. Only | |
1586 | * do this if we were disabled for the clock change. | |
1587 | */ | |
1588 | if (old_state == C_DISABLE_CLKCHANGE) { | |
1589 | fbi->state = C_ENABLE; | |
1590 | pxafb_enable_controller(fbi); | |
b0086efb | 1591 | /* TODO __pxafb_lcd_power(fbi, 1); */ |
1da177e4 LT |
1592 | } |
1593 | break; | |
1594 | ||
1595 | case C_REENABLE: | |
1596 | /* | |
1597 | * Re-enable the controller only if it was already | |
1598 | * enabled. This is so we reprogram the control | |
1599 | * registers. | |
1600 | */ | |
1601 | if (old_state == C_ENABLE) { | |
d14b272b | 1602 | __pxafb_lcd_power(fbi, 0); |
1da177e4 | 1603 | pxafb_disable_controller(fbi); |
1da177e4 | 1604 | pxafb_enable_controller(fbi); |
d14b272b | 1605 | __pxafb_lcd_power(fbi, 1); |
1da177e4 LT |
1606 | } |
1607 | break; | |
1608 | ||
1609 | case C_ENABLE_PM: | |
1610 | /* | |
1611 | * Re-enable the controller after PM. This is not | |
1612 | * perfect - think about the case where we were doing | |
1613 | * a clock change, and we suspended half-way through. | |
1614 | */ | |
1615 | if (old_state != C_DISABLE_PM) | |
1616 | break; | |
1617 | /* fall through */ | |
1618 | ||
1619 | case C_ENABLE: | |
1620 | /* | |
1621 | * Power up the LCD screen, enable controller, and | |
1622 | * turn on the backlight. | |
1623 | */ | |
1624 | if (old_state != C_ENABLE) { | |
1625 | fbi->state = C_ENABLE; | |
1da177e4 LT |
1626 | pxafb_enable_controller(fbi); |
1627 | __pxafb_lcd_power(fbi, 1); | |
1628 | __pxafb_backlight_power(fbi, 1); | |
1629 | } | |
1630 | break; | |
1631 | } | |
b91dbce5 | 1632 | mutex_unlock(&fbi->ctrlr_lock); |
1da177e4 LT |
1633 | } |
1634 | ||
1635 | /* | |
1636 | * Our LCD controller task (which is called when we blank or unblank) | |
1637 | * via keventd. | |
1638 | */ | |
6d5aefb8 | 1639 | static void pxafb_task(struct work_struct *work) |
1da177e4 | 1640 | { |
6d5aefb8 DH |
1641 | struct pxafb_info *fbi = |
1642 | container_of(work, struct pxafb_info, task); | |
1da177e4 LT |
1643 | u_int state = xchg(&fbi->task_state, -1); |
1644 | ||
1645 | set_ctrlr_state(fbi, state); | |
1646 | } | |
1647 | ||
1648 | #ifdef CONFIG_CPU_FREQ | |
1649 | /* | |
1650 | * CPU clock speed change handler. We need to adjust the LCD timing | |
1651 | * parameters when the CPU clock is adjusted by the power management | |
1652 | * subsystem. | |
1653 | * | |
1654 | * TODO: Determine why f->new != 10*get_lclk_frequency_10khz() | |
1655 | */ | |
1656 | static int | |
1657 | pxafb_freq_transition(struct notifier_block *nb, unsigned long val, void *data) | |
1658 | { | |
1659 | struct pxafb_info *fbi = TO_INF(nb, freq_transition); | |
b0086efb | 1660 | /* TODO struct cpufreq_freqs *f = data; */ |
1da177e4 LT |
1661 | u_int pcd; |
1662 | ||
1663 | switch (val) { | |
1664 | case CPUFREQ_PRECHANGE: | |
a6d710fe MV |
1665 | #ifdef CONFIG_FB_PXA_OVERLAY |
1666 | if (!(fbi->overlay[0].usage || fbi->overlay[1].usage)) | |
1667 | #endif | |
27be9a9e | 1668 | set_ctrlr_state(fbi, C_DISABLE_CLKCHANGE); |
1da177e4 LT |
1669 | break; |
1670 | ||
1671 | case CPUFREQ_POSTCHANGE: | |
72e3524c | 1672 | pcd = get_pcd(fbi, fbi->fb.var.pixclock); |
ba44cd2d | 1673 | set_hsync_time(fbi, pcd); |
b0086efb | 1674 | fbi->reg_lccr3 = (fbi->reg_lccr3 & ~0xff) | |
1675 | LCCR3_PixClkDiv(pcd); | |
1da177e4 LT |
1676 | set_ctrlr_state(fbi, C_ENABLE_CLKCHANGE); |
1677 | break; | |
1678 | } | |
1679 | return 0; | |
1680 | } | |
1da177e4 LT |
1681 | #endif |
1682 | ||
1683 | #ifdef CONFIG_PM | |
1684 | /* | |
1685 | * Power management hooks. Note that we won't be called from IRQ context, | |
1686 | * unlike the blank functions above, so we may sleep. | |
1687 | */ | |
4f3edfe3 | 1688 | static int pxafb_suspend(struct device *dev) |
1da177e4 | 1689 | { |
4f3edfe3 | 1690 | struct pxafb_info *fbi = dev_get_drvdata(dev); |
1da177e4 | 1691 | |
9480e307 | 1692 | set_ctrlr_state(fbi, C_DISABLE_PM); |
1da177e4 LT |
1693 | return 0; |
1694 | } | |
1695 | ||
4f3edfe3 | 1696 | static int pxafb_resume(struct device *dev) |
1da177e4 | 1697 | { |
4f3edfe3 | 1698 | struct pxafb_info *fbi = dev_get_drvdata(dev); |
1da177e4 | 1699 | |
9480e307 | 1700 | set_ctrlr_state(fbi, C_ENABLE_PM); |
1da177e4 LT |
1701 | return 0; |
1702 | } | |
4f3edfe3 | 1703 | |
47145210 | 1704 | static const struct dev_pm_ops pxafb_pm_ops = { |
4f3edfe3 MR |
1705 | .suspend = pxafb_suspend, |
1706 | .resume = pxafb_resume, | |
1707 | }; | |
1da177e4 LT |
1708 | #endif |
1709 | ||
48c68c4f | 1710 | static int pxafb_init_video_memory(struct pxafb_info *fbi) |
1da177e4 | 1711 | { |
77e19675 | 1712 | int size = PAGE_ALIGN(fbi->video_mem_size); |
3c42a449 | 1713 | |
77e19675 EM |
1714 | fbi->video_mem = alloc_pages_exact(size, GFP_KERNEL | __GFP_ZERO); |
1715 | if (fbi->video_mem == NULL) | |
1716 | return -ENOMEM; | |
1da177e4 | 1717 | |
77e19675 EM |
1718 | fbi->video_mem_phys = virt_to_phys(fbi->video_mem); |
1719 | fbi->video_mem_size = size; | |
1da177e4 | 1720 | |
77e19675 EM |
1721 | fbi->fb.fix.smem_start = fbi->video_mem_phys; |
1722 | fbi->fb.fix.smem_len = fbi->video_mem_size; | |
1723 | fbi->fb.screen_base = fbi->video_mem; | |
84f43c30 | 1724 | |
77e19675 | 1725 | return fbi->video_mem ? 0 : -ENOMEM; |
84f43c30 | 1726 | } |
1727 | ||
ebdf982a GL |
1728 | static void pxafb_decode_mach_info(struct pxafb_info *fbi, |
1729 | struct pxafb_mach_info *inf) | |
84f43c30 | 1730 | { |
1731 | unsigned int lcd_conn = inf->lcd_conn; | |
77e19675 EM |
1732 | struct pxafb_mode_info *m; |
1733 | int i; | |
84f43c30 | 1734 | |
1735 | fbi->cmap_inverse = inf->cmap_inverse; | |
1736 | fbi->cmap_static = inf->cmap_static; | |
a0427509 | 1737 | fbi->lccr4 = inf->lccr4; |
84f43c30 | 1738 | |
1ec26db1 | 1739 | switch (lcd_conn & LCD_TYPE_MASK) { |
84f43c30 | 1740 | case LCD_TYPE_MONO_STN: |
1741 | fbi->lccr0 = LCCR0_CMS; | |
1742 | break; | |
1743 | case LCD_TYPE_MONO_DSTN: | |
1744 | fbi->lccr0 = LCCR0_CMS | LCCR0_SDS; | |
1745 | break; | |
1746 | case LCD_TYPE_COLOR_STN: | |
1747 | fbi->lccr0 = 0; | |
1748 | break; | |
1749 | case LCD_TYPE_COLOR_DSTN: | |
1750 | fbi->lccr0 = LCCR0_SDS; | |
1751 | break; | |
1752 | case LCD_TYPE_COLOR_TFT: | |
1753 | fbi->lccr0 = LCCR0_PAS; | |
1754 | break; | |
1755 | case LCD_TYPE_SMART_PANEL: | |
1756 | fbi->lccr0 = LCCR0_LCDT | LCCR0_PAS; | |
1757 | break; | |
1758 | default: | |
1759 | /* fall back to backward compatibility way */ | |
1760 | fbi->lccr0 = inf->lccr0; | |
1761 | fbi->lccr3 = inf->lccr3; | |
ebdf982a | 1762 | goto decode_mode; |
84f43c30 | 1763 | } |
1764 | ||
1765 | if (lcd_conn == LCD_MONO_STN_8BPP) | |
1766 | fbi->lccr0 |= LCCR0_DPD; | |
1767 | ||
9a1ac7e4 EM |
1768 | fbi->lccr0 |= (lcd_conn & LCD_ALTERNATE_MAPPING) ? LCCR0_LDDALT : 0; |
1769 | ||
84f43c30 | 1770 | fbi->lccr3 = LCCR3_Acb((inf->lcd_conn >> 10) & 0xff); |
1771 | fbi->lccr3 |= (lcd_conn & LCD_BIAS_ACTIVE_LOW) ? LCCR3_OEP : 0; | |
1772 | fbi->lccr3 |= (lcd_conn & LCD_PCLK_EDGE_FALL) ? LCCR3_PCP : 0; | |
1773 | ||
ebdf982a | 1774 | decode_mode: |
77e19675 EM |
1775 | pxafb_setmode(&fbi->fb.var, &inf->modes[0]); |
1776 | ||
1777 | /* decide video memory size as follows: | |
1778 | * 1. default to mode of maximum resolution | |
1779 | * 2. allow platform to override | |
1780 | * 3. allow module parameter to override | |
1781 | */ | |
1782 | for (i = 0, m = &inf->modes[0]; i < inf->num_modes; i++, m++) | |
1783 | fbi->video_mem_size = max_t(size_t, fbi->video_mem_size, | |
1784 | m->xres * m->yres * m->bpp / 8); | |
1785 | ||
1786 | if (inf->video_mem_size > fbi->video_mem_size) | |
1787 | fbi->video_mem_size = inf->video_mem_size; | |
1788 | ||
1789 | if (video_mem_size > fbi->video_mem_size) | |
1790 | fbi->video_mem_size = video_mem_size; | |
84f43c30 | 1791 | } |
1792 | ||
f3621a60 RJ |
1793 | static struct pxafb_info *pxafb_init_fbinfo(struct device *dev, |
1794 | struct pxafb_mach_info *inf) | |
1da177e4 LT |
1795 | { |
1796 | struct pxafb_info *fbi; | |
1797 | void *addr; | |
1da177e4 LT |
1798 | |
1799 | /* Alloc the pxafb_info and pseudo_palette in one step */ | |
c8f96304 DM |
1800 | fbi = devm_kzalloc(dev, sizeof(struct pxafb_info) + sizeof(u32) * 16, |
1801 | GFP_KERNEL); | |
1da177e4 | 1802 | if (!fbi) |
a2f2058e | 1803 | return ERR_PTR(-ENOMEM); |
1da177e4 | 1804 | |
1da177e4 | 1805 | fbi->dev = dev; |
f3621a60 | 1806 | fbi->inf = inf; |
1da177e4 | 1807 | |
c8f96304 DM |
1808 | fbi->clk = devm_clk_get(dev, NULL); |
1809 | if (IS_ERR(fbi->clk)) | |
a2f2058e | 1810 | return ERR_CAST(fbi->clk); |
72e3524c | 1811 | |
1da177e4 LT |
1812 | strcpy(fbi->fb.fix.id, PXA_NAME); |
1813 | ||
1814 | fbi->fb.fix.type = FB_TYPE_PACKED_PIXELS; | |
1815 | fbi->fb.fix.type_aux = 0; | |
1816 | fbi->fb.fix.xpanstep = 0; | |
7e4b19c9 | 1817 | fbi->fb.fix.ypanstep = 1; |
1da177e4 LT |
1818 | fbi->fb.fix.ywrapstep = 0; |
1819 | fbi->fb.fix.accel = FB_ACCEL_NONE; | |
1820 | ||
1821 | fbi->fb.var.nonstd = 0; | |
1822 | fbi->fb.var.activate = FB_ACTIVATE_NOW; | |
1823 | fbi->fb.var.height = -1; | |
1824 | fbi->fb.var.width = -1; | |
7e4b19c9 | 1825 | fbi->fb.var.accel_flags = FB_ACCELF_TEXT; |
1da177e4 LT |
1826 | fbi->fb.var.vmode = FB_VMODE_NONINTERLACED; |
1827 | ||
1828 | fbi->fb.fbops = &pxafb_ops; | |
1829 | fbi->fb.flags = FBINFO_DEFAULT; | |
1830 | fbi->fb.node = -1; | |
1831 | ||
1832 | addr = fbi; | |
1833 | addr = addr + sizeof(struct pxafb_info); | |
1834 | fbi->fb.pseudo_palette = addr; | |
1835 | ||
b0086efb | 1836 | fbi->state = C_STARTUP; |
1837 | fbi->task_state = (u_char)-1; | |
d14b272b | 1838 | |
84f43c30 | 1839 | pxafb_decode_mach_info(fbi, inf); |
1da177e4 | 1840 | |
7779cee3 VK |
1841 | #ifdef CONFIG_FB_PXA_OVERLAY |
1842 | /* place overlay(s) on top of base */ | |
1843 | if (pxafb_overlay_supported()) | |
1844 | fbi->lccr0 |= LCCR0_OUC; | |
1845 | #endif | |
1846 | ||
1da177e4 | 1847 | init_waitqueue_head(&fbi->ctrlr_wait); |
6d5aefb8 | 1848 | INIT_WORK(&fbi->task, pxafb_task); |
b91dbce5 | 1849 | mutex_init(&fbi->ctrlr_lock); |
2ba162b9 | 1850 | init_completion(&fbi->disable_done); |
1da177e4 LT |
1851 | |
1852 | return fbi; | |
1853 | } | |
1854 | ||
1855 | #ifdef CONFIG_FB_PXA_PARAMETERS | |
f3621a60 RJ |
1856 | static int parse_opt_mode(struct device *dev, const char *this_opt, |
1857 | struct pxafb_mach_info *inf) | |
1da177e4 | 1858 | { |
817daf14 | 1859 | const char *name = this_opt+5; |
1860 | unsigned int namelen = strlen(name); | |
1861 | int res_specified = 0, bpp_specified = 0; | |
1862 | unsigned int xres = 0, yres = 0, bpp = 0; | |
1863 | int yres_specified = 0; | |
1864 | int i; | |
1865 | for (i = namelen-1; i >= 0; i--) { | |
1866 | switch (name[i]) { | |
1867 | case '-': | |
1868 | namelen = i; | |
1869 | if (!bpp_specified && !yres_specified) { | |
1870 | bpp = simple_strtoul(&name[i+1], NULL, 0); | |
1871 | bpp_specified = 1; | |
1872 | } else | |
1873 | goto done; | |
1874 | break; | |
1875 | case 'x': | |
1876 | if (!yres_specified) { | |
1877 | yres = simple_strtoul(&name[i+1], NULL, 0); | |
1878 | yres_specified = 1; | |
1879 | } else | |
1880 | goto done; | |
1881 | break; | |
1882 | case '0' ... '9': | |
1883 | break; | |
1884 | default: | |
1885 | goto done; | |
1886 | } | |
1887 | } | |
1888 | if (i < 0 && yres_specified) { | |
1889 | xres = simple_strtoul(name, NULL, 0); | |
1890 | res_specified = 1; | |
1891 | } | |
1892 | done: | |
1893 | if (res_specified) { | |
1894 | dev_info(dev, "overriding resolution: %dx%d\n", xres, yres); | |
1895 | inf->modes[0].xres = xres; inf->modes[0].yres = yres; | |
1896 | } | |
1897 | if (bpp_specified) | |
1898 | switch (bpp) { | |
1899 | case 1: | |
1900 | case 2: | |
1901 | case 4: | |
1902 | case 8: | |
1903 | case 16: | |
1904 | inf->modes[0].bpp = bpp; | |
1905 | dev_info(dev, "overriding bit depth: %d\n", bpp); | |
1906 | break; | |
1907 | default: | |
1908 | dev_err(dev, "Depth %d is not valid\n", bpp); | |
1909 | return -EINVAL; | |
1910 | } | |
1911 | return 0; | |
1912 | } | |
1913 | ||
f3621a60 RJ |
1914 | static int parse_opt(struct device *dev, char *this_opt, |
1915 | struct pxafb_mach_info *inf) | |
817daf14 | 1916 | { |
817daf14 | 1917 | struct pxafb_mode_info *mode = &inf->modes[0]; |
1918 | char s[64]; | |
1919 | ||
1920 | s[0] = '\0'; | |
1921 | ||
77e19675 EM |
1922 | if (!strncmp(this_opt, "vmem:", 5)) { |
1923 | video_mem_size = memparse(this_opt + 5, NULL); | |
1924 | } else if (!strncmp(this_opt, "mode:", 5)) { | |
f3621a60 | 1925 | return parse_opt_mode(dev, this_opt, inf); |
817daf14 | 1926 | } else if (!strncmp(this_opt, "pixclock:", 9)) { |
1927 | mode->pixclock = simple_strtoul(this_opt+9, NULL, 0); | |
1928 | sprintf(s, "pixclock: %ld\n", mode->pixclock); | |
1929 | } else if (!strncmp(this_opt, "left:", 5)) { | |
1930 | mode->left_margin = simple_strtoul(this_opt+5, NULL, 0); | |
1931 | sprintf(s, "left: %u\n", mode->left_margin); | |
1932 | } else if (!strncmp(this_opt, "right:", 6)) { | |
1933 | mode->right_margin = simple_strtoul(this_opt+6, NULL, 0); | |
1934 | sprintf(s, "right: %u\n", mode->right_margin); | |
1935 | } else if (!strncmp(this_opt, "upper:", 6)) { | |
1936 | mode->upper_margin = simple_strtoul(this_opt+6, NULL, 0); | |
1937 | sprintf(s, "upper: %u\n", mode->upper_margin); | |
1938 | } else if (!strncmp(this_opt, "lower:", 6)) { | |
1939 | mode->lower_margin = simple_strtoul(this_opt+6, NULL, 0); | |
1940 | sprintf(s, "lower: %u\n", mode->lower_margin); | |
1941 | } else if (!strncmp(this_opt, "hsynclen:", 9)) { | |
1942 | mode->hsync_len = simple_strtoul(this_opt+9, NULL, 0); | |
1943 | sprintf(s, "hsynclen: %u\n", mode->hsync_len); | |
1944 | } else if (!strncmp(this_opt, "vsynclen:", 9)) { | |
1945 | mode->vsync_len = simple_strtoul(this_opt+9, NULL, 0); | |
1946 | sprintf(s, "vsynclen: %u\n", mode->vsync_len); | |
1947 | } else if (!strncmp(this_opt, "hsync:", 6)) { | |
1948 | if (simple_strtoul(this_opt+6, NULL, 0) == 0) { | |
1949 | sprintf(s, "hsync: Active Low\n"); | |
1950 | mode->sync &= ~FB_SYNC_HOR_HIGH_ACT; | |
1951 | } else { | |
1952 | sprintf(s, "hsync: Active High\n"); | |
1953 | mode->sync |= FB_SYNC_HOR_HIGH_ACT; | |
1954 | } | |
1955 | } else if (!strncmp(this_opt, "vsync:", 6)) { | |
1956 | if (simple_strtoul(this_opt+6, NULL, 0) == 0) { | |
1957 | sprintf(s, "vsync: Active Low\n"); | |
1958 | mode->sync &= ~FB_SYNC_VERT_HIGH_ACT; | |
1959 | } else { | |
1960 | sprintf(s, "vsync: Active High\n"); | |
1961 | mode->sync |= FB_SYNC_VERT_HIGH_ACT; | |
1962 | } | |
1963 | } else if (!strncmp(this_opt, "dpc:", 4)) { | |
1964 | if (simple_strtoul(this_opt+4, NULL, 0) == 0) { | |
1965 | sprintf(s, "double pixel clock: false\n"); | |
1966 | inf->lccr3 &= ~LCCR3_DPC; | |
1967 | } else { | |
1968 | sprintf(s, "double pixel clock: true\n"); | |
1969 | inf->lccr3 |= LCCR3_DPC; | |
1970 | } | |
1971 | } else if (!strncmp(this_opt, "outputen:", 9)) { | |
1972 | if (simple_strtoul(this_opt+9, NULL, 0) == 0) { | |
1973 | sprintf(s, "output enable: active low\n"); | |
1974 | inf->lccr3 = (inf->lccr3 & ~LCCR3_OEP) | LCCR3_OutEnL; | |
1975 | } else { | |
1976 | sprintf(s, "output enable: active high\n"); | |
1977 | inf->lccr3 = (inf->lccr3 & ~LCCR3_OEP) | LCCR3_OutEnH; | |
1978 | } | |
1979 | } else if (!strncmp(this_opt, "pixclockpol:", 12)) { | |
1980 | if (simple_strtoul(this_opt+12, NULL, 0) == 0) { | |
1981 | sprintf(s, "pixel clock polarity: falling edge\n"); | |
1982 | inf->lccr3 = (inf->lccr3 & ~LCCR3_PCP) | LCCR3_PixFlEdg; | |
1983 | } else { | |
1984 | sprintf(s, "pixel clock polarity: rising edge\n"); | |
1985 | inf->lccr3 = (inf->lccr3 & ~LCCR3_PCP) | LCCR3_PixRsEdg; | |
1986 | } | |
1987 | } else if (!strncmp(this_opt, "color", 5)) { | |
1988 | inf->lccr0 = (inf->lccr0 & ~LCCR0_CMS) | LCCR0_Color; | |
1989 | } else if (!strncmp(this_opt, "mono", 4)) { | |
1990 | inf->lccr0 = (inf->lccr0 & ~LCCR0_CMS) | LCCR0_Mono; | |
1991 | } else if (!strncmp(this_opt, "active", 6)) { | |
1992 | inf->lccr0 = (inf->lccr0 & ~LCCR0_PAS) | LCCR0_Act; | |
1993 | } else if (!strncmp(this_opt, "passive", 7)) { | |
1994 | inf->lccr0 = (inf->lccr0 & ~LCCR0_PAS) | LCCR0_Pas; | |
1995 | } else if (!strncmp(this_opt, "single", 6)) { | |
1996 | inf->lccr0 = (inf->lccr0 & ~LCCR0_SDS) | LCCR0_Sngl; | |
1997 | } else if (!strncmp(this_opt, "dual", 4)) { | |
1998 | inf->lccr0 = (inf->lccr0 & ~LCCR0_SDS) | LCCR0_Dual; | |
1999 | } else if (!strncmp(this_opt, "4pix", 4)) { | |
2000 | inf->lccr0 = (inf->lccr0 & ~LCCR0_DPD) | LCCR0_4PixMono; | |
2001 | } else if (!strncmp(this_opt, "8pix", 4)) { | |
2002 | inf->lccr0 = (inf->lccr0 & ~LCCR0_DPD) | LCCR0_8PixMono; | |
2003 | } else { | |
2004 | dev_err(dev, "unknown option: %s\n", this_opt); | |
2005 | return -EINVAL; | |
2006 | } | |
2007 | ||
2008 | if (s[0] != '\0') | |
2009 | dev_info(dev, "override %s", s); | |
2010 | ||
2011 | return 0; | |
2012 | } | |
2013 | ||
f3621a60 RJ |
2014 | static int pxafb_parse_options(struct device *dev, char *options, |
2015 | struct pxafb_mach_info *inf) | |
817daf14 | 2016 | { |
1da177e4 | 2017 | char *this_opt; |
817daf14 | 2018 | int ret; |
1da177e4 | 2019 | |
817daf14 | 2020 | if (!options || !*options) |
2021 | return 0; | |
1da177e4 LT |
2022 | |
2023 | dev_dbg(dev, "options are \"%s\"\n", options ? options : "null"); | |
2024 | ||
2025 | /* could be made table driven or similar?... */ | |
817daf14 | 2026 | while ((this_opt = strsep(&options, ",")) != NULL) { |
f3621a60 | 2027 | ret = parse_opt(dev, this_opt, inf); |
817daf14 | 2028 | if (ret) |
2029 | return ret; | |
2030 | } | |
2031 | return 0; | |
1da177e4 | 2032 | } |
92ac73c1 | 2033 | |
48c68c4f | 2034 | static char g_options[256] = ""; |
92ac73c1 | 2035 | |
f1edfc42 | 2036 | #ifndef MODULE |
9e6c2976 | 2037 | static int __init pxafb_setup_options(void) |
92ac73c1 | 2038 | { |
2039 | char *options = NULL; | |
2040 | ||
2041 | if (fb_get_options("pxafb", &options)) | |
2042 | return -ENODEV; | |
2043 | ||
2044 | if (options) | |
2045 | strlcpy(g_options, options, sizeof(g_options)); | |
2046 | ||
2047 | return 0; | |
2048 | } | |
2049 | #else | |
2050 | #define pxafb_setup_options() (0) | |
2051 | ||
2052 | module_param_string(options, g_options, sizeof(g_options), 0); | |
ab42b818 | 2053 | MODULE_PARM_DESC(options, "LCD parameters (see Documentation/fb/pxafb.rst)"); |
92ac73c1 | 2054 | #endif |
2055 | ||
2056 | #else | |
2057 | #define pxafb_parse_options(...) (0) | |
2058 | #define pxafb_setup_options() (0) | |
1da177e4 LT |
2059 | #endif |
2060 | ||
1da177e4 | 2061 | #ifdef DEBUG_VAR |
4f3e2664 EM |
2062 | /* Check for various illegal bit-combinations. Currently only |
2063 | * a warning is given. */ | |
48c68c4f | 2064 | static void pxafb_check_options(struct device *dev, struct pxafb_mach_info *inf) |
4f3e2664 EM |
2065 | { |
2066 | if (inf->lcd_conn) | |
2067 | return; | |
1da177e4 | 2068 | |
b0086efb | 2069 | if (inf->lccr0 & LCCR0_INVALID_CONFIG_MASK) |
4f3e2664 | 2070 | dev_warn(dev, "machine LCCR0 setting contains " |
b0086efb | 2071 | "illegal bits: %08x\n", |
2072 | inf->lccr0 & LCCR0_INVALID_CONFIG_MASK); | |
2073 | if (inf->lccr3 & LCCR3_INVALID_CONFIG_MASK) | |
4f3e2664 | 2074 | dev_warn(dev, "machine LCCR3 setting contains " |
b0086efb | 2075 | "illegal bits: %08x\n", |
2076 | inf->lccr3 & LCCR3_INVALID_CONFIG_MASK); | |
2077 | if (inf->lccr0 & LCCR0_DPD && | |
1da177e4 LT |
2078 | ((inf->lccr0 & LCCR0_PAS) != LCCR0_Pas || |
2079 | (inf->lccr0 & LCCR0_SDS) != LCCR0_Sngl || | |
2080 | (inf->lccr0 & LCCR0_CMS) != LCCR0_Mono)) | |
4f3e2664 | 2081 | dev_warn(dev, "Double Pixel Data (DPD) mode is " |
b0086efb | 2082 | "only valid in passive mono" |
2083 | " single panel mode\n"); | |
2084 | if ((inf->lccr0 & LCCR0_PAS) == LCCR0_Act && | |
1da177e4 | 2085 | (inf->lccr0 & LCCR0_SDS) == LCCR0_Dual) |
4f3e2664 | 2086 | dev_warn(dev, "Dual panel only valid in passive mode\n"); |
b0086efb | 2087 | if ((inf->lccr0 & LCCR0_PAS) == LCCR0_Pas && |
2088 | (inf->modes->upper_margin || inf->modes->lower_margin)) | |
4f3e2664 | 2089 | dev_warn(dev, "Upper and lower margins must be 0 in " |
b0086efb | 2090 | "passive mode\n"); |
4f3e2664 EM |
2091 | } |
2092 | #else | |
2093 | #define pxafb_check_options(...) do {} while (0) | |
1da177e4 LT |
2094 | #endif |
2095 | ||
420a4882 RJ |
2096 | #if defined(CONFIG_OF) |
2097 | static const char * const lcd_types[] = { | |
dbeef4fe | 2098 | "unknown", "mono-stn", "mono-dstn", "color-stn", "color-dstn", |
420a4882 RJ |
2099 | "color-tft", "smart-panel", NULL |
2100 | }; | |
2101 | ||
2102 | static int of_get_pxafb_display(struct device *dev, struct device_node *disp, | |
2103 | struct pxafb_mach_info *info, u32 bus_width) | |
2104 | { | |
2105 | struct display_timings *timings; | |
2106 | struct videomode vm; | |
2107 | int i, ret = -EINVAL; | |
2108 | const char *s; | |
2109 | ||
2110 | ret = of_property_read_string(disp, "lcd-type", &s); | |
2111 | if (ret) | |
2112 | s = "color-tft"; | |
2113 | ||
6d09dfe7 AS |
2114 | i = match_string(lcd_types, -1, s); |
2115 | if (i < 0) { | |
420a4882 | 2116 | dev_err(dev, "lcd-type %s is unknown\n", s); |
6d09dfe7 | 2117 | return i; |
420a4882 RJ |
2118 | } |
2119 | info->lcd_conn |= LCD_CONN_TYPE(i); | |
2120 | info->lcd_conn |= LCD_CONN_WIDTH(bus_width); | |
2121 | ||
2122 | timings = of_get_display_timings(disp); | |
2123 | if (!timings) | |
e0299908 | 2124 | return -EINVAL; |
420a4882 RJ |
2125 | |
2126 | ret = -ENOMEM; | |
c8f96304 DM |
2127 | info->modes = devm_kcalloc(dev, timings->num_timings, |
2128 | sizeof(info->modes[0]), | |
2129 | GFP_KERNEL); | |
420a4882 RJ |
2130 | if (!info->modes) |
2131 | goto out; | |
2132 | info->num_modes = timings->num_timings; | |
2133 | ||
2134 | for (i = 0; i < timings->num_timings; i++) { | |
2135 | ret = videomode_from_timings(timings, &vm, i); | |
2136 | if (ret) { | |
2137 | dev_err(dev, "videomode_from_timings %d failed: %d\n", | |
2138 | i, ret); | |
2139 | goto out; | |
2140 | } | |
2141 | if (vm.flags & DISPLAY_FLAGS_PIXDATA_POSEDGE) | |
2142 | info->lcd_conn |= LCD_PCLK_EDGE_RISE; | |
2143 | if (vm.flags & DISPLAY_FLAGS_PIXDATA_NEGEDGE) | |
2144 | info->lcd_conn |= LCD_PCLK_EDGE_FALL; | |
2145 | if (vm.flags & DISPLAY_FLAGS_DE_HIGH) | |
2146 | info->lcd_conn |= LCD_BIAS_ACTIVE_HIGH; | |
2147 | if (vm.flags & DISPLAY_FLAGS_DE_LOW) | |
2148 | info->lcd_conn |= LCD_BIAS_ACTIVE_LOW; | |
2149 | if (vm.flags & DISPLAY_FLAGS_HSYNC_HIGH) | |
2150 | info->modes[i].sync |= FB_SYNC_HOR_HIGH_ACT; | |
2151 | if (vm.flags & DISPLAY_FLAGS_VSYNC_HIGH) | |
2152 | info->modes[i].sync |= FB_SYNC_VERT_HIGH_ACT; | |
2153 | ||
2154 | info->modes[i].pixclock = 1000000000UL / (vm.pixelclock / 1000); | |
2155 | info->modes[i].xres = vm.hactive; | |
2156 | info->modes[i].yres = vm.vactive; | |
2157 | info->modes[i].hsync_len = vm.hsync_len; | |
2158 | info->modes[i].left_margin = vm.hback_porch; | |
2159 | info->modes[i].right_margin = vm.hfront_porch; | |
2160 | info->modes[i].vsync_len = vm.vsync_len; | |
2161 | info->modes[i].upper_margin = vm.vback_porch; | |
2162 | info->modes[i].lower_margin = vm.vfront_porch; | |
2163 | } | |
2164 | ret = 0; | |
2165 | ||
2166 | out: | |
2167 | display_timings_release(timings); | |
2168 | return ret; | |
2169 | } | |
2170 | ||
2171 | static int of_get_pxafb_mode_info(struct device *dev, | |
2172 | struct pxafb_mach_info *info) | |
2173 | { | |
2174 | struct device_node *display, *np; | |
2175 | u32 bus_width; | |
2176 | int ret, i; | |
2177 | ||
2178 | np = of_graph_get_next_endpoint(dev->of_node, NULL); | |
2179 | if (!np) { | |
2180 | dev_err(dev, "could not find endpoint\n"); | |
2181 | return -EINVAL; | |
2182 | } | |
2183 | ret = of_property_read_u32(np, "bus-width", &bus_width); | |
2184 | if (ret) { | |
2185 | dev_err(dev, "no bus-width specified: %d\n", ret); | |
d4b9efa3 | 2186 | of_node_put(np); |
420a4882 RJ |
2187 | return ret; |
2188 | } | |
2189 | ||
2190 | display = of_graph_get_remote_port_parent(np); | |
2191 | of_node_put(np); | |
2192 | if (!display) { | |
2193 | dev_err(dev, "no display defined\n"); | |
2194 | return -EINVAL; | |
2195 | } | |
2196 | ||
2197 | ret = of_get_pxafb_display(dev, display, info, bus_width); | |
2198 | of_node_put(display); | |
2199 | if (ret) | |
2200 | return ret; | |
2201 | ||
2202 | for (i = 0; i < info->num_modes; i++) | |
2203 | info->modes[i].bpp = bus_width; | |
2204 | ||
2205 | return 0; | |
2206 | } | |
2207 | ||
2208 | static struct pxafb_mach_info *of_pxafb_of_mach_info(struct device *dev) | |
2209 | { | |
2210 | int ret; | |
2211 | struct pxafb_mach_info *info; | |
2212 | ||
2213 | if (!dev->of_node) | |
2214 | return NULL; | |
2215 | info = devm_kzalloc(dev, sizeof(*info), GFP_KERNEL); | |
2216 | if (!info) | |
2217 | return ERR_PTR(-ENOMEM); | |
2218 | ret = of_get_pxafb_mode_info(dev, info); | |
26073918 | 2219 | if (ret) |
420a4882 | 2220 | return ERR_PTR(ret); |
420a4882 RJ |
2221 | |
2222 | /* | |
2223 | * On purpose, neither lccrX registers nor video memory size can be | |
2224 | * specified through device-tree, they are considered more a debug hack | |
2225 | * available through command line. | |
2226 | */ | |
2227 | return info; | |
2228 | } | |
2229 | #else | |
2230 | static struct pxafb_mach_info *of_pxafb_of_mach_info(struct device *dev) | |
2231 | { | |
2232 | return NULL; | |
2233 | } | |
2234 | #endif | |
2235 | ||
48c68c4f | 2236 | static int pxafb_probe(struct platform_device *dev) |
4f3e2664 EM |
2237 | { |
2238 | struct pxafb_info *fbi; | |
f3621a60 | 2239 | struct pxafb_mach_info *inf, *pdata; |
4f3e2664 | 2240 | struct resource *r; |
f3621a60 | 2241 | int i, irq, ret; |
4f3e2664 EM |
2242 | |
2243 | dev_dbg(&dev->dev, "pxafb_probe\n"); | |
2244 | ||
4f3e2664 | 2245 | ret = -ENOMEM; |
f3621a60 RJ |
2246 | pdata = dev_get_platdata(&dev->dev); |
2247 | inf = devm_kmalloc(&dev->dev, sizeof(*inf), GFP_KERNEL); | |
6f6abd36 RJ |
2248 | if (!inf) |
2249 | goto failed; | |
420a4882 | 2250 | |
f3621a60 RJ |
2251 | if (pdata) { |
2252 | *inf = *pdata; | |
2253 | inf->modes = | |
2254 | devm_kmalloc_array(&dev->dev, pdata->num_modes, | |
2255 | sizeof(inf->modes[0]), GFP_KERNEL); | |
2256 | if (!inf->modes) | |
2257 | goto failed; | |
2258 | for (i = 0; i < inf->num_modes; i++) | |
2259 | inf->modes[i] = pdata->modes[i]; | |
2260 | } | |
2261 | ||
f3621a60 | 2262 | if (!pdata) |
420a4882 RJ |
2263 | inf = of_pxafb_of_mach_info(&dev->dev); |
2264 | if (IS_ERR_OR_NULL(inf)) | |
f3621a60 | 2265 | goto failed; |
4f3e2664 | 2266 | |
f3621a60 | 2267 | ret = pxafb_parse_options(&dev->dev, g_options, inf); |
4f3e2664 EM |
2268 | if (ret < 0) |
2269 | goto failed; | |
2270 | ||
2271 | pxafb_check_options(&dev->dev, inf); | |
2272 | ||
b0086efb | 2273 | dev_dbg(&dev->dev, "got a %dx%dx%d LCD\n", |
2274 | inf->modes->xres, | |
2275 | inf->modes->yres, | |
2276 | inf->modes->bpp); | |
2277 | if (inf->modes->xres == 0 || | |
2278 | inf->modes->yres == 0 || | |
2279 | inf->modes->bpp == 0) { | |
3ae5eaec | 2280 | dev_err(&dev->dev, "Invalid resolution or bit depth\n"); |
1da177e4 LT |
2281 | ret = -EINVAL; |
2282 | goto failed; | |
2283 | } | |
a5718a14 | 2284 | |
f3621a60 | 2285 | fbi = pxafb_init_fbinfo(&dev->dev, inf); |
a2f2058e | 2286 | if (IS_ERR(fbi)) { |
3ae5eaec | 2287 | dev_err(&dev->dev, "Failed to initialize framebuffer device\n"); |
a2f2058e | 2288 | ret = PTR_ERR(fbi); |
1da177e4 LT |
2289 | goto failed; |
2290 | } | |
2291 | ||
52a7a1ce DM |
2292 | if (cpu_is_pxa3xx() && inf->acceleration_enabled) |
2293 | fbi->fb.fix.accel = FB_ACCEL_PXA3XX; | |
2294 | ||
a5718a14 EM |
2295 | fbi->backlight_power = inf->pxafb_backlight_power; |
2296 | fbi->lcd_power = inf->pxafb_lcd_power; | |
2297 | ||
31e1391a DM |
2298 | fbi->lcd_supply = devm_regulator_get_optional(&dev->dev, "lcd"); |
2299 | if (IS_ERR(fbi->lcd_supply)) { | |
2300 | if (PTR_ERR(fbi->lcd_supply) == -EPROBE_DEFER) | |
2301 | return -EPROBE_DEFER; | |
2302 | ||
2303 | fbi->lcd_supply = NULL; | |
2304 | } | |
2305 | ||
ce4fb7b8 | 2306 | r = platform_get_resource(dev, IORESOURCE_MEM, 0); |
2307 | if (r == NULL) { | |
2308 | dev_err(&dev->dev, "no I/O memory resource defined\n"); | |
2309 | ret = -ENODEV; | |
c8f96304 | 2310 | goto failed; |
ce4fb7b8 | 2311 | } |
2312 | ||
c8f96304 DM |
2313 | fbi->mmio_base = devm_ioremap_resource(&dev->dev, r); |
2314 | if (IS_ERR(fbi->mmio_base)) { | |
2315 | dev_err(&dev->dev, "failed to get I/O memory\n"); | |
ce4fb7b8 | 2316 | ret = -EBUSY; |
c8f96304 | 2317 | goto failed; |
ce4fb7b8 | 2318 | } |
2319 | ||
77e19675 EM |
2320 | fbi->dma_buff_size = PAGE_ALIGN(sizeof(struct pxafb_dma_buff)); |
2321 | fbi->dma_buff = dma_alloc_coherent(fbi->dev, fbi->dma_buff_size, | |
2322 | &fbi->dma_buff_phys, GFP_KERNEL); | |
2323 | if (fbi->dma_buff == NULL) { | |
2324 | dev_err(&dev->dev, "failed to allocate memory for DMA\n"); | |
2325 | ret = -ENOMEM; | |
c8f96304 | 2326 | goto failed; |
77e19675 EM |
2327 | } |
2328 | ||
2329 | ret = pxafb_init_video_memory(fbi); | |
1da177e4 | 2330 | if (ret) { |
3ae5eaec | 2331 | dev_err(&dev->dev, "Failed to allocate video RAM: %d\n", ret); |
1da177e4 | 2332 | ret = -ENOMEM; |
77e19675 | 2333 | goto failed_free_dma; |
1da177e4 | 2334 | } |
1da177e4 | 2335 | |
ce4fb7b8 | 2336 | irq = platform_get_irq(dev, 0); |
2337 | if (irq < 0) { | |
2338 | dev_err(&dev->dev, "no IRQ defined\n"); | |
2339 | ret = -ENODEV; | |
2340 | goto failed_free_mem; | |
2341 | } | |
2342 | ||
c8f96304 | 2343 | ret = devm_request_irq(&dev->dev, irq, pxafb_handle_irq, 0, "LCD", fbi); |
1da177e4 | 2344 | if (ret) { |
3ae5eaec | 2345 | dev_err(&dev->dev, "request_irq failed: %d\n", ret); |
1da177e4 | 2346 | ret = -EBUSY; |
ce4fb7b8 | 2347 | goto failed_free_mem; |
1da177e4 LT |
2348 | } |
2349 | ||
3c42a449 EM |
2350 | ret = pxafb_smart_init(fbi); |
2351 | if (ret) { | |
2352 | dev_err(&dev->dev, "failed to initialize smartpanel\n"); | |
c8f96304 | 2353 | goto failed_free_mem; |
3c42a449 | 2354 | } |
07df1c4f | 2355 | |
1da177e4 LT |
2356 | /* |
2357 | * This makes sure that our colour bitfield | |
2358 | * descriptors are correctly initialised. | |
2359 | */ | |
ee98476b JK |
2360 | ret = pxafb_check_var(&fbi->fb.var, &fbi->fb); |
2361 | if (ret) { | |
2362 | dev_err(&dev->dev, "failed to get suitable mode\n"); | |
c8f96304 | 2363 | goto failed_free_mem; |
ee98476b JK |
2364 | } |
2365 | ||
2366 | ret = pxafb_set_par(&fbi->fb); | |
2367 | if (ret) { | |
2368 | dev_err(&dev->dev, "Failed to set parameters\n"); | |
c8f96304 | 2369 | goto failed_free_mem; |
ee98476b | 2370 | } |
1da177e4 | 2371 | |
3ae5eaec | 2372 | platform_set_drvdata(dev, fbi); |
1da177e4 LT |
2373 | |
2374 | ret = register_framebuffer(&fbi->fb); | |
2375 | if (ret < 0) { | |
b0086efb | 2376 | dev_err(&dev->dev, |
2377 | "Failed to register framebuffer device: %d\n", ret); | |
ee98476b | 2378 | goto failed_free_cmap; |
1da177e4 LT |
2379 | } |
2380 | ||
198fc108 EM |
2381 | pxafb_overlay_init(fbi); |
2382 | ||
1da177e4 LT |
2383 | #ifdef CONFIG_CPU_FREQ |
2384 | fbi->freq_transition.notifier_call = pxafb_freq_transition; | |
b0086efb | 2385 | cpufreq_register_notifier(&fbi->freq_transition, |
2386 | CPUFREQ_TRANSITION_NOTIFIER); | |
1da177e4 LT |
2387 | #endif |
2388 | ||
2389 | /* | |
2390 | * Ok, now enable the LCD controller | |
2391 | */ | |
2392 | set_ctrlr_state(fbi, C_ENABLE); | |
2393 | ||
2394 | return 0; | |
2395 | ||
ee98476b JK |
2396 | failed_free_cmap: |
2397 | if (fbi->fb.cmap.len) | |
2398 | fb_dealloc_cmap(&fbi->fb.cmap); | |
ce4fb7b8 | 2399 | failed_free_mem: |
77e19675 EM |
2400 | free_pages_exact(fbi->video_mem, fbi->video_mem_size); |
2401 | failed_free_dma: | |
2402 | dma_free_coherent(&dev->dev, fbi->dma_buff_size, | |
2403 | fbi->dma_buff, fbi->dma_buff_phys); | |
ee98476b | 2404 | failed: |
1da177e4 LT |
2405 | return ret; |
2406 | } | |
2407 | ||
48c68c4f | 2408 | static int pxafb_remove(struct platform_device *dev) |
9f17f287 JK |
2409 | { |
2410 | struct pxafb_info *fbi = platform_get_drvdata(dev); | |
9f17f287 JK |
2411 | struct fb_info *info; |
2412 | ||
2413 | if (!fbi) | |
2414 | return 0; | |
2415 | ||
2416 | info = &fbi->fb; | |
2417 | ||
198fc108 | 2418 | pxafb_overlay_exit(fbi); |
9f17f287 JK |
2419 | unregister_framebuffer(info); |
2420 | ||
2421 | pxafb_disable_controller(fbi); | |
2422 | ||
2423 | if (fbi->fb.cmap.len) | |
2424 | fb_dealloc_cmap(&fbi->fb.cmap); | |
2425 | ||
77e19675 EM |
2426 | free_pages_exact(fbi->video_mem, fbi->video_mem_size); |
2427 | ||
f6e45661 LR |
2428 | dma_free_wc(&dev->dev, fbi->dma_buff_size, fbi->dma_buff, |
2429 | fbi->dma_buff_phys); | |
9f17f287 | 2430 | |
9f17f287 JK |
2431 | return 0; |
2432 | } | |
2433 | ||
420a4882 RJ |
2434 | static const struct of_device_id pxafb_of_dev_id[] = { |
2435 | { .compatible = "marvell,pxa270-lcdc", }, | |
2436 | { .compatible = "marvell,pxa300-lcdc", }, | |
2437 | { .compatible = "marvell,pxa2xx-lcdc", }, | |
2438 | { /* sentinel */ } | |
2439 | }; | |
2440 | MODULE_DEVICE_TABLE(of, pxafb_of_dev_id); | |
2441 | ||
3ae5eaec | 2442 | static struct platform_driver pxafb_driver = { |
1da177e4 | 2443 | .probe = pxafb_probe, |
48c68c4f | 2444 | .remove = pxafb_remove, |
3ae5eaec RK |
2445 | .driver = { |
2446 | .name = "pxa2xx-fb", | |
420a4882 | 2447 | .of_match_table = pxafb_of_dev_id, |
4f3edfe3 MR |
2448 | #ifdef CONFIG_PM |
2449 | .pm = &pxafb_pm_ops, | |
2450 | #endif | |
3ae5eaec | 2451 | }, |
1da177e4 LT |
2452 | }; |
2453 | ||
9e6c2976 | 2454 | static int __init pxafb_init(void) |
1da177e4 | 2455 | { |
92ac73c1 | 2456 | if (pxafb_setup_options()) |
2457 | return -EINVAL; | |
1da177e4 | 2458 | |
3ae5eaec | 2459 | return platform_driver_register(&pxafb_driver); |
1da177e4 LT |
2460 | } |
2461 | ||
9f17f287 JK |
2462 | static void __exit pxafb_exit(void) |
2463 | { | |
2464 | platform_driver_unregister(&pxafb_driver); | |
2465 | } | |
2466 | ||
1da177e4 | 2467 | module_init(pxafb_init); |
9f17f287 | 2468 | module_exit(pxafb_exit); |
1da177e4 LT |
2469 | |
2470 | MODULE_DESCRIPTION("loadable framebuffer driver for PXA"); | |
2471 | MODULE_LICENSE("GPL"); |