Commit | Line | Data |
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7c2f891c SH |
1 | /* |
2 | * linux/drivers/video/imxfb.c | |
3 | * | |
4 | * Freescale i.MX Frame Buffer device driver | |
5 | * | |
6 | * Copyright (C) 2004 Sascha Hauer, Pengutronix | |
7 | * Based on acornfb.c Copyright (C) Russell King. | |
8 | * | |
9 | * This file is subject to the terms and conditions of the GNU General Public | |
10 | * License. See the file COPYING in the main directory of this archive for | |
11 | * more details. | |
12 | * | |
13 | * Please direct your questions and comments on this driver to the following | |
14 | * email address: | |
15 | * | |
16 | * linux-arm-kernel@lists.arm.linux.org.uk | |
17 | */ | |
18 | ||
7c2f891c | 19 | |
7c2f891c SH |
20 | #include <linux/module.h> |
21 | #include <linux/kernel.h> | |
7c2f891c SH |
22 | #include <linux/errno.h> |
23 | #include <linux/string.h> | |
24 | #include <linux/interrupt.h> | |
25 | #include <linux/slab.h> | |
27ac792c | 26 | #include <linux/mm.h> |
7c2f891c SH |
27 | #include <linux/fb.h> |
28 | #include <linux/delay.h> | |
29 | #include <linux/init.h> | |
30 | #include <linux/ioport.h> | |
31 | #include <linux/cpufreq.h> | |
d052d1be | 32 | #include <linux/platform_device.h> |
7c2f891c | 33 | #include <linux/dma-mapping.h> |
72330b0e | 34 | #include <linux/io.h> |
7c2f891c | 35 | |
a09e64fb | 36 | #include <mach/imxfb.h> |
7c2f891c SH |
37 | |
38 | /* | |
39 | * Complain if VAR is out of range. | |
40 | */ | |
41 | #define DEBUG_VAR 1 | |
42 | ||
43 | #include "imxfb.h" | |
44 | ||
72330b0e JB |
45 | #define DRIVER_NAME "imx-fb" |
46 | ||
47 | #define LCDC_SSA 0x00 | |
48 | ||
49 | #define LCDC_SIZE 0x04 | |
50 | #define SIZE_XMAX(x) ((((x) >> 4) & 0x3f) << 20) | |
51 | #define SIZE_YMAX(y) ((y) & 0x1ff) | |
52 | ||
53 | #define LCDC_VPW 0x08 | |
54 | #define VPW_VPW(x) ((x) & 0x3ff) | |
55 | ||
56 | #define LCDC_CPOS 0x0C | |
57 | #define CPOS_CC1 (1<<31) | |
58 | #define CPOS_CC0 (1<<30) | |
59 | #define CPOS_OP (1<<28) | |
60 | #define CPOS_CXP(x) (((x) & 3ff) << 16) | |
61 | #define CPOS_CYP(y) ((y) & 0x1ff) | |
62 | ||
63 | #define LCDC_LCWHB 0x10 | |
64 | #define LCWHB_BK_EN (1<<31) | |
65 | #define LCWHB_CW(w) (((w) & 0x1f) << 24) | |
66 | #define LCWHB_CH(h) (((h) & 0x1f) << 16) | |
67 | #define LCWHB_BD(x) ((x) & 0xff) | |
68 | ||
69 | #define LCDC_LCHCC 0x14 | |
70 | #define LCHCC_CUR_COL_R(r) (((r) & 0x1f) << 11) | |
71 | #define LCHCC_CUR_COL_G(g) (((g) & 0x3f) << 5) | |
72 | #define LCHCC_CUR_COL_B(b) ((b) & 0x1f) | |
73 | ||
74 | #define LCDC_PCR 0x18 | |
75 | ||
76 | #define LCDC_HCR 0x1C | |
77 | #define HCR_H_WIDTH(x) (((x) & 0x3f) << 26) | |
78 | #define HCR_H_WAIT_1(x) (((x) & 0xff) << 8) | |
79 | #define HCR_H_WAIT_2(x) ((x) & 0xff) | |
80 | ||
81 | #define LCDC_VCR 0x20 | |
82 | #define VCR_V_WIDTH(x) (((x) & 0x3f) << 26) | |
83 | #define VCR_V_WAIT_1(x) (((x) & 0xff) << 8) | |
84 | #define VCR_V_WAIT_2(x) ((x) & 0xff) | |
85 | ||
86 | #define LCDC_POS 0x24 | |
87 | #define POS_POS(x) ((x) & 1f) | |
88 | ||
89 | #define LCDC_LSCR1 0x28 | |
90 | /* bit fields in imxfb.h */ | |
91 | ||
92 | #define LCDC_PWMR 0x2C | |
93 | /* bit fields in imxfb.h */ | |
94 | ||
95 | #define LCDC_DMACR 0x30 | |
96 | /* bit fields in imxfb.h */ | |
97 | ||
98 | #define LCDC_RMCR 0x34 | |
99 | #define RMCR_LCDC_EN (1<<1) | |
100 | #define RMCR_SELF_REF (1<<0) | |
101 | ||
102 | #define LCDC_LCDICR 0x38 | |
103 | #define LCDICR_INT_SYN (1<<2) | |
104 | #define LCDICR_INT_CON (1) | |
105 | ||
106 | #define LCDC_LCDISR 0x40 | |
107 | #define LCDISR_UDR_ERR (1<<3) | |
108 | #define LCDISR_ERR_RES (1<<2) | |
109 | #define LCDISR_EOF (1<<1) | |
110 | #define LCDISR_BOF (1<<0) | |
111 | ||
7c2f891c SH |
112 | static struct imxfb_rgb def_rgb_16 = { |
113 | .red = { .offset = 8, .length = 4, }, | |
114 | .green = { .offset = 4, .length = 4, }, | |
115 | .blue = { .offset = 0, .length = 4, }, | |
116 | .transp = { .offset = 0, .length = 0, }, | |
117 | }; | |
118 | ||
119 | static struct imxfb_rgb def_rgb_8 = { | |
120 | .red = { .offset = 0, .length = 8, }, | |
121 | .green = { .offset = 0, .length = 8, }, | |
122 | .blue = { .offset = 0, .length = 8, }, | |
123 | .transp = { .offset = 0, .length = 0, }, | |
124 | }; | |
125 | ||
126 | static int imxfb_activate_var(struct fb_var_screeninfo *var, struct fb_info *info); | |
127 | ||
128 | static inline u_int chan_to_field(u_int chan, struct fb_bitfield *bf) | |
129 | { | |
130 | chan &= 0xffff; | |
131 | chan >>= 16 - bf->length; | |
132 | return chan << bf->offset; | |
133 | } | |
134 | ||
7c2f891c SH |
135 | static int |
136 | imxfb_setpalettereg(u_int regno, u_int red, u_int green, u_int blue, | |
137 | u_int trans, struct fb_info *info) | |
138 | { | |
139 | struct imxfb_info *fbi = info->par; | |
140 | u_int val, ret = 1; | |
141 | ||
142 | #define CNVT_TOHW(val,width) ((((val)<<(width))+0x7FFF-(val))>>16) | |
143 | if (regno < fbi->palette_size) { | |
144 | val = (CNVT_TOHW(red, 4) << 8) | | |
145 | (CNVT_TOHW(green,4) << 4) | | |
146 | CNVT_TOHW(blue, 4); | |
147 | ||
72330b0e | 148 | writel(val, fbi->regs + 0x800 + (regno << 2)); |
7c2f891c SH |
149 | ret = 0; |
150 | } | |
151 | return ret; | |
152 | } | |
153 | ||
154 | static int | |
155 | imxfb_setcolreg(u_int regno, u_int red, u_int green, u_int blue, | |
156 | u_int trans, struct fb_info *info) | |
157 | { | |
158 | struct imxfb_info *fbi = info->par; | |
159 | unsigned int val; | |
160 | int ret = 1; | |
161 | ||
162 | /* | |
163 | * If inverse mode was selected, invert all the colours | |
164 | * rather than the register number. The register number | |
165 | * is what you poke into the framebuffer to produce the | |
166 | * colour you requested. | |
167 | */ | |
168 | if (fbi->cmap_inverse) { | |
169 | red = 0xffff - red; | |
170 | green = 0xffff - green; | |
171 | blue = 0xffff - blue; | |
172 | } | |
173 | ||
174 | /* | |
175 | * If greyscale is true, then we convert the RGB value | |
176 | * to greyscale no mater what visual we are using. | |
177 | */ | |
178 | if (info->var.grayscale) | |
179 | red = green = blue = (19595 * red + 38470 * green + | |
180 | 7471 * blue) >> 16; | |
181 | ||
182 | switch (info->fix.visual) { | |
183 | case FB_VISUAL_TRUECOLOR: | |
184 | /* | |
185 | * 12 or 16-bit True Colour. We encode the RGB value | |
186 | * according to the RGB bitfield information. | |
187 | */ | |
188 | if (regno < 16) { | |
189 | u32 *pal = info->pseudo_palette; | |
190 | ||
191 | val = chan_to_field(red, &info->var.red); | |
192 | val |= chan_to_field(green, &info->var.green); | |
193 | val |= chan_to_field(blue, &info->var.blue); | |
194 | ||
195 | pal[regno] = val; | |
196 | ret = 0; | |
197 | } | |
198 | break; | |
199 | ||
200 | case FB_VISUAL_STATIC_PSEUDOCOLOR: | |
201 | case FB_VISUAL_PSEUDOCOLOR: | |
202 | ret = imxfb_setpalettereg(regno, red, green, blue, trans, info); | |
203 | break; | |
204 | } | |
205 | ||
206 | return ret; | |
207 | } | |
208 | ||
209 | /* | |
210 | * imxfb_check_var(): | |
211 | * Round up in the following order: bits_per_pixel, xres, | |
212 | * yres, xres_virtual, yres_virtual, xoffset, yoffset, grayscale, | |
213 | * bitfields, horizontal timing, vertical timing. | |
214 | */ | |
215 | static int | |
216 | imxfb_check_var(struct fb_var_screeninfo *var, struct fb_info *info) | |
217 | { | |
218 | struct imxfb_info *fbi = info->par; | |
219 | int rgbidx; | |
220 | ||
221 | if (var->xres < MIN_XRES) | |
222 | var->xres = MIN_XRES; | |
223 | if (var->yres < MIN_YRES) | |
224 | var->yres = MIN_YRES; | |
225 | if (var->xres > fbi->max_xres) | |
226 | var->xres = fbi->max_xres; | |
227 | if (var->yres > fbi->max_yres) | |
228 | var->yres = fbi->max_yres; | |
229 | var->xres_virtual = max(var->xres_virtual, var->xres); | |
230 | var->yres_virtual = max(var->yres_virtual, var->yres); | |
231 | ||
232 | pr_debug("var->bits_per_pixel=%d\n", var->bits_per_pixel); | |
233 | switch (var->bits_per_pixel) { | |
234 | case 16: | |
235 | rgbidx = RGB_16; | |
236 | break; | |
237 | case 8: | |
238 | rgbidx = RGB_8; | |
239 | break; | |
240 | default: | |
241 | rgbidx = RGB_16; | |
242 | } | |
243 | ||
244 | /* | |
245 | * Copy the RGB parameters for this display | |
246 | * from the machine specific parameters. | |
247 | */ | |
248 | var->red = fbi->rgb[rgbidx]->red; | |
249 | var->green = fbi->rgb[rgbidx]->green; | |
250 | var->blue = fbi->rgb[rgbidx]->blue; | |
251 | var->transp = fbi->rgb[rgbidx]->transp; | |
252 | ||
253 | pr_debug("RGBT length = %d:%d:%d:%d\n", | |
254 | var->red.length, var->green.length, var->blue.length, | |
255 | var->transp.length); | |
256 | ||
257 | pr_debug("RGBT offset = %d:%d:%d:%d\n", | |
258 | var->red.offset, var->green.offset, var->blue.offset, | |
259 | var->transp.offset); | |
260 | ||
261 | return 0; | |
262 | } | |
263 | ||
264 | /* | |
265 | * imxfb_set_par(): | |
266 | * Set the user defined part of the display for the specified console | |
267 | */ | |
268 | static int imxfb_set_par(struct fb_info *info) | |
269 | { | |
270 | struct imxfb_info *fbi = info->par; | |
271 | struct fb_var_screeninfo *var = &info->var; | |
272 | ||
273 | pr_debug("set_par\n"); | |
274 | ||
275 | if (var->bits_per_pixel == 16) | |
276 | info->fix.visual = FB_VISUAL_TRUECOLOR; | |
277 | else if (!fbi->cmap_static) | |
278 | info->fix.visual = FB_VISUAL_PSEUDOCOLOR; | |
279 | else { | |
280 | /* | |
281 | * Some people have weird ideas about wanting static | |
282 | * pseudocolor maps. I suspect their user space | |
283 | * applications are broken. | |
284 | */ | |
285 | info->fix.visual = FB_VISUAL_STATIC_PSEUDOCOLOR; | |
286 | } | |
287 | ||
288 | info->fix.line_length = var->xres_virtual * | |
289 | var->bits_per_pixel / 8; | |
290 | fbi->palette_size = var->bits_per_pixel == 8 ? 256 : 16; | |
291 | ||
292 | imxfb_activate_var(var, info); | |
293 | ||
294 | return 0; | |
295 | } | |
296 | ||
297 | static void imxfb_enable_controller(struct imxfb_info *fbi) | |
298 | { | |
299 | pr_debug("Enabling LCD controller\n"); | |
300 | ||
301 | /* initialize LCDC */ | |
72330b0e JB |
302 | writel(readl(fbi->regs + LCDC_RMCR) & ~RMCR_LCDC_EN, |
303 | fbi->regs + LCDC_RMCR); /* just to be safe... */ | |
304 | ||
305 | writel(fbi->screen_dma, fbi->regs + LCDC_SSA); | |
7c2f891c | 306 | |
7c2f891c | 307 | /* physical screen start address */ |
72330b0e JB |
308 | writel(VPW_VPW(fbi->max_xres * fbi->max_bpp / 8 / 4), |
309 | fbi->regs + LCDC_VPW); | |
7c2f891c | 310 | |
72330b0e JB |
311 | /* panning offset 0 (0 pixel offset) */ |
312 | writel(0x00000000, fbi->regs + LCDC_POS); | |
7c2f891c SH |
313 | |
314 | /* disable hardware cursor */ | |
72330b0e JB |
315 | writel(readl(fbi->regs + LCDC_CPOS) & ~(CPOS_CC0 | CPOS_CC1), |
316 | fbi->regs + LCDC_CPOS); | |
7c2f891c | 317 | |
72330b0e | 318 | writel(RMCR_LCDC_EN, fbi->regs + LCDC_RMCR); |
7c2f891c SH |
319 | |
320 | if(fbi->backlight_power) | |
321 | fbi->backlight_power(1); | |
322 | if(fbi->lcd_power) | |
323 | fbi->lcd_power(1); | |
324 | } | |
325 | ||
326 | static void imxfb_disable_controller(struct imxfb_info *fbi) | |
327 | { | |
328 | pr_debug("Disabling LCD controller\n"); | |
329 | ||
330 | if(fbi->backlight_power) | |
331 | fbi->backlight_power(0); | |
332 | if(fbi->lcd_power) | |
333 | fbi->lcd_power(0); | |
334 | ||
72330b0e | 335 | writel(0, fbi->regs + LCDC_RMCR); |
7c2f891c SH |
336 | } |
337 | ||
338 | static int imxfb_blank(int blank, struct fb_info *info) | |
339 | { | |
340 | struct imxfb_info *fbi = info->par; | |
341 | ||
342 | pr_debug("imxfb_blank: blank=%d\n", blank); | |
343 | ||
344 | switch (blank) { | |
345 | case FB_BLANK_POWERDOWN: | |
346 | case FB_BLANK_VSYNC_SUSPEND: | |
347 | case FB_BLANK_HSYNC_SUSPEND: | |
348 | case FB_BLANK_NORMAL: | |
349 | imxfb_disable_controller(fbi); | |
350 | break; | |
351 | ||
352 | case FB_BLANK_UNBLANK: | |
353 | imxfb_enable_controller(fbi); | |
354 | break; | |
355 | } | |
356 | return 0; | |
357 | } | |
358 | ||
359 | static struct fb_ops imxfb_ops = { | |
360 | .owner = THIS_MODULE, | |
361 | .fb_check_var = imxfb_check_var, | |
362 | .fb_set_par = imxfb_set_par, | |
363 | .fb_setcolreg = imxfb_setcolreg, | |
364 | .fb_fillrect = cfb_fillrect, | |
365 | .fb_copyarea = cfb_copyarea, | |
366 | .fb_imageblit = cfb_imageblit, | |
367 | .fb_blank = imxfb_blank, | |
7c2f891c SH |
368 | }; |
369 | ||
370 | /* | |
371 | * imxfb_activate_var(): | |
372 | * Configures LCD Controller based on entries in var parameter. Settings are | |
373 | * only written to the controller if changes were made. | |
374 | */ | |
375 | static int imxfb_activate_var(struct fb_var_screeninfo *var, struct fb_info *info) | |
376 | { | |
377 | struct imxfb_info *fbi = info->par; | |
378 | pr_debug("var: xres=%d hslen=%d lm=%d rm=%d\n", | |
379 | var->xres, var->hsync_len, | |
380 | var->left_margin, var->right_margin); | |
381 | pr_debug("var: yres=%d vslen=%d um=%d bm=%d\n", | |
382 | var->yres, var->vsync_len, | |
383 | var->upper_margin, var->lower_margin); | |
384 | ||
385 | #if DEBUG_VAR | |
386 | if (var->xres < 16 || var->xres > 1024) | |
387 | printk(KERN_ERR "%s: invalid xres %d\n", | |
388 | info->fix.id, var->xres); | |
389 | if (var->hsync_len < 1 || var->hsync_len > 64) | |
390 | printk(KERN_ERR "%s: invalid hsync_len %d\n", | |
391 | info->fix.id, var->hsync_len); | |
392 | if (var->left_margin > 255) | |
393 | printk(KERN_ERR "%s: invalid left_margin %d\n", | |
394 | info->fix.id, var->left_margin); | |
395 | if (var->right_margin > 255) | |
396 | printk(KERN_ERR "%s: invalid right_margin %d\n", | |
397 | info->fix.id, var->right_margin); | |
398 | if (var->yres < 1 || var->yres > 511) | |
399 | printk(KERN_ERR "%s: invalid yres %d\n", | |
400 | info->fix.id, var->yres); | |
401 | if (var->vsync_len > 100) | |
402 | printk(KERN_ERR "%s: invalid vsync_len %d\n", | |
403 | info->fix.id, var->vsync_len); | |
404 | if (var->upper_margin > 63) | |
405 | printk(KERN_ERR "%s: invalid upper_margin %d\n", | |
406 | info->fix.id, var->upper_margin); | |
407 | if (var->lower_margin > 255) | |
408 | printk(KERN_ERR "%s: invalid lower_margin %d\n", | |
409 | info->fix.id, var->lower_margin); | |
410 | #endif | |
411 | ||
72330b0e | 412 | writel(HCR_H_WIDTH(var->hsync_len) | |
d6ed5755 SH |
413 | HCR_H_WAIT_1(var->right_margin) | |
414 | HCR_H_WAIT_2(var->left_margin), | |
72330b0e | 415 | fbi->regs + LCDC_HCR); |
7c2f891c | 416 | |
72330b0e | 417 | writel(VCR_V_WIDTH(var->vsync_len) | |
d6ed5755 SH |
418 | VCR_V_WAIT_1(var->lower_margin) | |
419 | VCR_V_WAIT_2(var->upper_margin), | |
72330b0e | 420 | fbi->regs + LCDC_VCR); |
7c2f891c | 421 | |
72330b0e JB |
422 | writel(SIZE_XMAX(var->xres) | SIZE_YMAX(var->yres), |
423 | fbi->regs + LCDC_SIZE); | |
424 | writel(fbi->pcr, fbi->regs + LCDC_PCR); | |
425 | writel(fbi->pwmr, fbi->regs + LCDC_PWMR); | |
426 | writel(fbi->lscr1, fbi->regs + LCDC_LSCR1); | |
427 | writel(fbi->dmacr, fbi->regs + LCDC_DMACR); | |
7c2f891c SH |
428 | |
429 | return 0; | |
430 | } | |
431 | ||
7c2f891c SH |
432 | #ifdef CONFIG_PM |
433 | /* | |
434 | * Power management hooks. Note that we won't be called from IRQ context, | |
435 | * unlike the blank functions above, so we may sleep. | |
436 | */ | |
3ae5eaec | 437 | static int imxfb_suspend(struct platform_device *dev, pm_message_t state) |
7c2f891c | 438 | { |
3ae5eaec | 439 | struct imxfb_info *fbi = platform_get_drvdata(dev); |
5ae12170 | 440 | pr_debug("%s\n",__func__); |
7c2f891c | 441 | |
9480e307 | 442 | imxfb_disable_controller(fbi); |
7c2f891c SH |
443 | return 0; |
444 | } | |
445 | ||
3ae5eaec | 446 | static int imxfb_resume(struct platform_device *dev) |
7c2f891c | 447 | { |
3ae5eaec | 448 | struct imxfb_info *fbi = platform_get_drvdata(dev); |
5ae12170 | 449 | pr_debug("%s\n",__func__); |
7c2f891c | 450 | |
9480e307 | 451 | imxfb_enable_controller(fbi); |
7c2f891c SH |
452 | return 0; |
453 | } | |
454 | #else | |
455 | #define imxfb_suspend NULL | |
456 | #define imxfb_resume NULL | |
457 | #endif | |
458 | ||
72330b0e | 459 | static int __init imxfb_init_fbinfo(struct platform_device *pdev) |
7c2f891c | 460 | { |
72330b0e JB |
461 | struct imxfb_mach_info *inf = pdev->dev.platform_data; |
462 | struct fb_info *info = dev_get_drvdata(&pdev->dev); | |
7c2f891c SH |
463 | struct imxfb_info *fbi = info->par; |
464 | ||
5ae12170 | 465 | pr_debug("%s\n",__func__); |
7c2f891c SH |
466 | |
467 | info->pseudo_palette = kmalloc( sizeof(u32) * 16, GFP_KERNEL); | |
468 | if (!info->pseudo_palette) | |
469 | return -ENOMEM; | |
470 | ||
471 | memset(fbi, 0, sizeof(struct imxfb_info)); | |
7c2f891c SH |
472 | |
473 | strlcpy(info->fix.id, IMX_NAME, sizeof(info->fix.id)); | |
474 | ||
475 | info->fix.type = FB_TYPE_PACKED_PIXELS; | |
476 | info->fix.type_aux = 0; | |
477 | info->fix.xpanstep = 0; | |
478 | info->fix.ypanstep = 0; | |
479 | info->fix.ywrapstep = 0; | |
480 | info->fix.accel = FB_ACCEL_NONE; | |
481 | ||
482 | info->var.nonstd = 0; | |
483 | info->var.activate = FB_ACTIVATE_NOW; | |
484 | info->var.height = -1; | |
485 | info->var.width = -1; | |
486 | info->var.accel_flags = 0; | |
487 | info->var.vmode = FB_VMODE_NONINTERLACED; | |
488 | ||
489 | info->fbops = &imxfb_ops; | |
9da505d1 | 490 | info->flags = FBINFO_FLAG_DEFAULT | FBINFO_READS_FAST; |
7c2f891c SH |
491 | |
492 | fbi->rgb[RGB_16] = &def_rgb_16; | |
493 | fbi->rgb[RGB_8] = &def_rgb_8; | |
494 | ||
495 | fbi->max_xres = inf->xres; | |
496 | info->var.xres = inf->xres; | |
497 | info->var.xres_virtual = inf->xres; | |
498 | fbi->max_yres = inf->yres; | |
499 | info->var.yres = inf->yres; | |
500 | info->var.yres_virtual = inf->yres; | |
501 | fbi->max_bpp = inf->bpp; | |
502 | info->var.bits_per_pixel = inf->bpp; | |
9da505d1 | 503 | info->var.nonstd = inf->nonstd; |
7c2f891c SH |
504 | info->var.pixclock = inf->pixclock; |
505 | info->var.hsync_len = inf->hsync_len; | |
506 | info->var.left_margin = inf->left_margin; | |
507 | info->var.right_margin = inf->right_margin; | |
508 | info->var.vsync_len = inf->vsync_len; | |
509 | info->var.upper_margin = inf->upper_margin; | |
510 | info->var.lower_margin = inf->lower_margin; | |
511 | info->var.sync = inf->sync; | |
512 | info->var.grayscale = inf->cmap_greyscale; | |
513 | fbi->cmap_inverse = inf->cmap_inverse; | |
90e16ddd | 514 | fbi->cmap_static = inf->cmap_static; |
7c2f891c SH |
515 | fbi->pcr = inf->pcr; |
516 | fbi->lscr1 = inf->lscr1; | |
772a9e63 | 517 | fbi->dmacr = inf->dmacr; |
7c2f891c SH |
518 | fbi->pwmr = inf->pwmr; |
519 | fbi->lcd_power = inf->lcd_power; | |
520 | fbi->backlight_power = inf->backlight_power; | |
521 | info->fix.smem_len = fbi->max_xres * fbi->max_yres * | |
522 | fbi->max_bpp / 8; | |
523 | ||
524 | return 0; | |
525 | } | |
526 | ||
3ae5eaec | 527 | static int __init imxfb_probe(struct platform_device *pdev) |
7c2f891c | 528 | { |
7c2f891c SH |
529 | struct imxfb_info *fbi; |
530 | struct fb_info *info; | |
531 | struct imxfb_mach_info *inf; | |
532 | struct resource *res; | |
533 | int ret; | |
534 | ||
535 | printk("i.MX Framebuffer driver\n"); | |
536 | ||
537 | res = platform_get_resource(pdev, IORESOURCE_MEM, 0); | |
538 | if(!res) | |
539 | return -ENODEV; | |
540 | ||
3ae5eaec | 541 | inf = pdev->dev.platform_data; |
7c2f891c | 542 | if(!inf) { |
f99c8929 | 543 | dev_err(&pdev->dev,"No platform_data available\n"); |
7c2f891c SH |
544 | return -ENOMEM; |
545 | } | |
546 | ||
3ae5eaec | 547 | info = framebuffer_alloc(sizeof(struct imxfb_info), &pdev->dev); |
7c2f891c SH |
548 | if(!info) |
549 | return -ENOMEM; | |
550 | ||
551 | fbi = info->par; | |
552 | ||
3ae5eaec | 553 | platform_set_drvdata(pdev, info); |
7c2f891c | 554 | |
72330b0e | 555 | ret = imxfb_init_fbinfo(pdev); |
7c2f891c SH |
556 | if( ret < 0 ) |
557 | goto failed_init; | |
558 | ||
72330b0e JB |
559 | res = request_mem_region(res->start, resource_size(res), |
560 | DRIVER_NAME); | |
7c2f891c SH |
561 | if (!res) { |
562 | ret = -EBUSY; | |
72330b0e JB |
563 | goto failed_req; |
564 | } | |
565 | ||
566 | fbi->regs = ioremap(res->start, resource_size(res)); | |
567 | if (fbi->regs == NULL) { | |
568 | printk(KERN_ERR"Cannot map frame buffer registers\n"); | |
569 | goto failed_ioremap; | |
7c2f891c SH |
570 | } |
571 | ||
572 | if (!inf->fixed_screen_cpu) { | |
72330b0e JB |
573 | fbi->map_size = PAGE_ALIGN(info->fix.smem_len); |
574 | fbi->map_cpu = dma_alloc_writecombine(&pdev->dev, | |
575 | fbi->map_size, &fbi->map_dma, GFP_KERNEL); | |
576 | ||
577 | if (!fbi->map_cpu) { | |
f99c8929 | 578 | dev_err(&pdev->dev, "Failed to allocate video RAM: %d\n", ret); |
7c2f891c SH |
579 | ret = -ENOMEM; |
580 | goto failed_map; | |
581 | } | |
72330b0e JB |
582 | |
583 | info->screen_base = fbi->map_cpu; | |
584 | fbi->screen_cpu = fbi->map_cpu; | |
585 | fbi->screen_dma = fbi->map_dma; | |
586 | info->fix.smem_start = fbi->screen_dma; | |
7c2f891c SH |
587 | } else { |
588 | /* Fixed framebuffer mapping enables location of the screen in eSRAM */ | |
589 | fbi->map_cpu = inf->fixed_screen_cpu; | |
590 | fbi->map_dma = inf->fixed_screen_dma; | |
591 | info->screen_base = fbi->map_cpu; | |
592 | fbi->screen_cpu = fbi->map_cpu; | |
593 | fbi->screen_dma = fbi->map_dma; | |
594 | info->fix.smem_start = fbi->screen_dma; | |
595 | } | |
596 | ||
597 | /* | |
598 | * This makes sure that our colour bitfield | |
599 | * descriptors are correctly initialised. | |
600 | */ | |
601 | imxfb_check_var(&info->var, info); | |
602 | ||
603 | ret = fb_alloc_cmap(&info->cmap, 1<<info->var.bits_per_pixel, 0); | |
604 | if (ret < 0) | |
605 | goto failed_cmap; | |
606 | ||
7c2f891c SH |
607 | imxfb_set_par(info); |
608 | ret = register_framebuffer(info); | |
609 | if (ret < 0) { | |
f99c8929 | 610 | dev_err(&pdev->dev, "failed to register framebuffer\n"); |
7c2f891c SH |
611 | goto failed_register; |
612 | } | |
613 | ||
614 | imxfb_enable_controller(fbi); | |
615 | ||
616 | return 0; | |
617 | ||
618 | failed_register: | |
619 | fb_dealloc_cmap(&info->cmap); | |
620 | failed_cmap: | |
621 | if (!inf->fixed_screen_cpu) | |
3ae5eaec | 622 | dma_free_writecombine(&pdev->dev,fbi->map_size,fbi->map_cpu, |
72330b0e | 623 | fbi->map_dma); |
7c2f891c | 624 | failed_map: |
72330b0e JB |
625 | iounmap(fbi->regs); |
626 | failed_ioremap: | |
7c2f891c | 627 | release_mem_region(res->start, res->end - res->start); |
72330b0e JB |
628 | failed_req: |
629 | kfree(info->pseudo_palette); | |
7c2f891c | 630 | failed_init: |
3ae5eaec | 631 | platform_set_drvdata(pdev, NULL); |
7c2f891c SH |
632 | framebuffer_release(info); |
633 | return ret; | |
634 | } | |
635 | ||
72330b0e | 636 | static int __devexit imxfb_remove(struct platform_device *pdev) |
7c2f891c | 637 | { |
3ae5eaec | 638 | struct fb_info *info = platform_get_drvdata(pdev); |
772a9e63 | 639 | struct imxfb_info *fbi = info->par; |
7c2f891c SH |
640 | struct resource *res; |
641 | ||
642 | res = platform_get_resource(pdev, IORESOURCE_MEM, 0); | |
643 | ||
772a9e63 | 644 | imxfb_disable_controller(fbi); |
7c2f891c SH |
645 | |
646 | unregister_framebuffer(info); | |
647 | ||
648 | fb_dealloc_cmap(&info->cmap); | |
649 | kfree(info->pseudo_palette); | |
650 | framebuffer_release(info); | |
651 | ||
72330b0e | 652 | iounmap(fbi->regs); |
7c2f891c | 653 | release_mem_region(res->start, res->end - res->start + 1); |
3ae5eaec | 654 | platform_set_drvdata(pdev, NULL); |
7c2f891c SH |
655 | |
656 | return 0; | |
657 | } | |
658 | ||
3ae5eaec | 659 | void imxfb_shutdown(struct platform_device * dev) |
7c2f891c | 660 | { |
3ae5eaec | 661 | struct fb_info *info = platform_get_drvdata(dev); |
772a9e63 SH |
662 | struct imxfb_info *fbi = info->par; |
663 | imxfb_disable_controller(fbi); | |
7c2f891c SH |
664 | } |
665 | ||
3ae5eaec | 666 | static struct platform_driver imxfb_driver = { |
7c2f891c SH |
667 | .suspend = imxfb_suspend, |
668 | .resume = imxfb_resume, | |
72330b0e | 669 | .remove = __devexit_p(imxfb_remove), |
7c2f891c | 670 | .shutdown = imxfb_shutdown, |
3ae5eaec | 671 | .driver = { |
72330b0e | 672 | .name = DRIVER_NAME, |
3ae5eaec | 673 | }, |
7c2f891c SH |
674 | }; |
675 | ||
676 | int __init imxfb_init(void) | |
677 | { | |
72330b0e | 678 | return platform_driver_probe(&imxfb_driver, imxfb_probe); |
7c2f891c SH |
679 | } |
680 | ||
681 | static void __exit imxfb_cleanup(void) | |
682 | { | |
3ae5eaec | 683 | platform_driver_unregister(&imxfb_driver); |
7c2f891c SH |
684 | } |
685 | ||
686 | module_init(imxfb_init); | |
687 | module_exit(imxfb_cleanup); | |
688 | ||
689 | MODULE_DESCRIPTION("Motorola i.MX framebuffer driver"); | |
690 | MODULE_AUTHOR("Sascha Hauer, Pengutronix"); | |
691 | MODULE_LICENSE("GPL"); |