Sascha Hauer | 7c2f891c | 2005-05-01 08:59:24 -0700 | [diff] [blame] | 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 | |
| 19 | //#define DEBUG 1 |
| 20 | |
Sascha Hauer | 7c2f891c | 2005-05-01 08:59:24 -0700 | [diff] [blame] | 21 | #include <linux/module.h> |
| 22 | #include <linux/kernel.h> |
Sascha Hauer | 7c2f891c | 2005-05-01 08:59:24 -0700 | [diff] [blame] | 23 | #include <linux/errno.h> |
| 24 | #include <linux/string.h> |
| 25 | #include <linux/interrupt.h> |
| 26 | #include <linux/slab.h> |
| 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> |
Russell King | d052d1b | 2005-10-29 19:07:23 +0100 | [diff] [blame] | 32 | #include <linux/platform_device.h> |
Sascha Hauer | 7c2f891c | 2005-05-01 08:59:24 -0700 | [diff] [blame] | 33 | #include <linux/dma-mapping.h> |
| 34 | |
| 35 | #include <asm/hardware.h> |
| 36 | #include <asm/io.h> |
Sascha Hauer | 7c2f891c | 2005-05-01 08:59:24 -0700 | [diff] [blame] | 37 | #include <asm/arch/imxfb.h> |
| 38 | |
| 39 | /* |
| 40 | * Complain if VAR is out of range. |
| 41 | */ |
| 42 | #define DEBUG_VAR 1 |
| 43 | |
| 44 | #include "imxfb.h" |
| 45 | |
| 46 | static struct imxfb_rgb def_rgb_16 = { |
| 47 | .red = { .offset = 8, .length = 4, }, |
| 48 | .green = { .offset = 4, .length = 4, }, |
| 49 | .blue = { .offset = 0, .length = 4, }, |
| 50 | .transp = { .offset = 0, .length = 0, }, |
| 51 | }; |
| 52 | |
| 53 | static struct imxfb_rgb def_rgb_8 = { |
| 54 | .red = { .offset = 0, .length = 8, }, |
| 55 | .green = { .offset = 0, .length = 8, }, |
| 56 | .blue = { .offset = 0, .length = 8, }, |
| 57 | .transp = { .offset = 0, .length = 0, }, |
| 58 | }; |
| 59 | |
| 60 | static int imxfb_activate_var(struct fb_var_screeninfo *var, struct fb_info *info); |
| 61 | |
| 62 | static inline u_int chan_to_field(u_int chan, struct fb_bitfield *bf) |
| 63 | { |
| 64 | chan &= 0xffff; |
| 65 | chan >>= 16 - bf->length; |
| 66 | return chan << bf->offset; |
| 67 | } |
| 68 | |
| 69 | #define LCDC_PALETTE(x) __REG2(IMX_LCDC_BASE+0x800, (x)<<2) |
| 70 | static int |
| 71 | imxfb_setpalettereg(u_int regno, u_int red, u_int green, u_int blue, |
| 72 | u_int trans, struct fb_info *info) |
| 73 | { |
| 74 | struct imxfb_info *fbi = info->par; |
| 75 | u_int val, ret = 1; |
| 76 | |
| 77 | #define CNVT_TOHW(val,width) ((((val)<<(width))+0x7FFF-(val))>>16) |
| 78 | if (regno < fbi->palette_size) { |
| 79 | val = (CNVT_TOHW(red, 4) << 8) | |
| 80 | (CNVT_TOHW(green,4) << 4) | |
| 81 | CNVT_TOHW(blue, 4); |
| 82 | |
| 83 | LCDC_PALETTE(regno) = val; |
| 84 | ret = 0; |
| 85 | } |
| 86 | return ret; |
| 87 | } |
| 88 | |
| 89 | static int |
| 90 | imxfb_setcolreg(u_int regno, u_int red, u_int green, u_int blue, |
| 91 | u_int trans, struct fb_info *info) |
| 92 | { |
| 93 | struct imxfb_info *fbi = info->par; |
| 94 | unsigned int val; |
| 95 | int ret = 1; |
| 96 | |
| 97 | /* |
| 98 | * If inverse mode was selected, invert all the colours |
| 99 | * rather than the register number. The register number |
| 100 | * is what you poke into the framebuffer to produce the |
| 101 | * colour you requested. |
| 102 | */ |
| 103 | if (fbi->cmap_inverse) { |
| 104 | red = 0xffff - red; |
| 105 | green = 0xffff - green; |
| 106 | blue = 0xffff - blue; |
| 107 | } |
| 108 | |
| 109 | /* |
| 110 | * If greyscale is true, then we convert the RGB value |
| 111 | * to greyscale no mater what visual we are using. |
| 112 | */ |
| 113 | if (info->var.grayscale) |
| 114 | red = green = blue = (19595 * red + 38470 * green + |
| 115 | 7471 * blue) >> 16; |
| 116 | |
| 117 | switch (info->fix.visual) { |
| 118 | case FB_VISUAL_TRUECOLOR: |
| 119 | /* |
| 120 | * 12 or 16-bit True Colour. We encode the RGB value |
| 121 | * according to the RGB bitfield information. |
| 122 | */ |
| 123 | if (regno < 16) { |
| 124 | u32 *pal = info->pseudo_palette; |
| 125 | |
| 126 | val = chan_to_field(red, &info->var.red); |
| 127 | val |= chan_to_field(green, &info->var.green); |
| 128 | val |= chan_to_field(blue, &info->var.blue); |
| 129 | |
| 130 | pal[regno] = val; |
| 131 | ret = 0; |
| 132 | } |
| 133 | break; |
| 134 | |
| 135 | case FB_VISUAL_STATIC_PSEUDOCOLOR: |
| 136 | case FB_VISUAL_PSEUDOCOLOR: |
| 137 | ret = imxfb_setpalettereg(regno, red, green, blue, trans, info); |
| 138 | break; |
| 139 | } |
| 140 | |
| 141 | return ret; |
| 142 | } |
| 143 | |
| 144 | /* |
| 145 | * imxfb_check_var(): |
| 146 | * Round up in the following order: bits_per_pixel, xres, |
| 147 | * yres, xres_virtual, yres_virtual, xoffset, yoffset, grayscale, |
| 148 | * bitfields, horizontal timing, vertical timing. |
| 149 | */ |
| 150 | static int |
| 151 | imxfb_check_var(struct fb_var_screeninfo *var, struct fb_info *info) |
| 152 | { |
| 153 | struct imxfb_info *fbi = info->par; |
| 154 | int rgbidx; |
| 155 | |
| 156 | if (var->xres < MIN_XRES) |
| 157 | var->xres = MIN_XRES; |
| 158 | if (var->yres < MIN_YRES) |
| 159 | var->yres = MIN_YRES; |
| 160 | if (var->xres > fbi->max_xres) |
| 161 | var->xres = fbi->max_xres; |
| 162 | if (var->yres > fbi->max_yres) |
| 163 | var->yres = fbi->max_yres; |
| 164 | var->xres_virtual = max(var->xres_virtual, var->xres); |
| 165 | var->yres_virtual = max(var->yres_virtual, var->yres); |
| 166 | |
| 167 | pr_debug("var->bits_per_pixel=%d\n", var->bits_per_pixel); |
| 168 | switch (var->bits_per_pixel) { |
| 169 | case 16: |
| 170 | rgbidx = RGB_16; |
| 171 | break; |
| 172 | case 8: |
| 173 | rgbidx = RGB_8; |
| 174 | break; |
| 175 | default: |
| 176 | rgbidx = RGB_16; |
| 177 | } |
| 178 | |
| 179 | /* |
| 180 | * Copy the RGB parameters for this display |
| 181 | * from the machine specific parameters. |
| 182 | */ |
| 183 | var->red = fbi->rgb[rgbidx]->red; |
| 184 | var->green = fbi->rgb[rgbidx]->green; |
| 185 | var->blue = fbi->rgb[rgbidx]->blue; |
| 186 | var->transp = fbi->rgb[rgbidx]->transp; |
| 187 | |
| 188 | pr_debug("RGBT length = %d:%d:%d:%d\n", |
| 189 | var->red.length, var->green.length, var->blue.length, |
| 190 | var->transp.length); |
| 191 | |
| 192 | pr_debug("RGBT offset = %d:%d:%d:%d\n", |
| 193 | var->red.offset, var->green.offset, var->blue.offset, |
| 194 | var->transp.offset); |
| 195 | |
| 196 | return 0; |
| 197 | } |
| 198 | |
| 199 | /* |
| 200 | * imxfb_set_par(): |
| 201 | * Set the user defined part of the display for the specified console |
| 202 | */ |
| 203 | static int imxfb_set_par(struct fb_info *info) |
| 204 | { |
| 205 | struct imxfb_info *fbi = info->par; |
| 206 | struct fb_var_screeninfo *var = &info->var; |
| 207 | |
| 208 | pr_debug("set_par\n"); |
| 209 | |
| 210 | if (var->bits_per_pixel == 16) |
| 211 | info->fix.visual = FB_VISUAL_TRUECOLOR; |
| 212 | else if (!fbi->cmap_static) |
| 213 | info->fix.visual = FB_VISUAL_PSEUDOCOLOR; |
| 214 | else { |
| 215 | /* |
| 216 | * Some people have weird ideas about wanting static |
| 217 | * pseudocolor maps. I suspect their user space |
| 218 | * applications are broken. |
| 219 | */ |
| 220 | info->fix.visual = FB_VISUAL_STATIC_PSEUDOCOLOR; |
| 221 | } |
| 222 | |
| 223 | info->fix.line_length = var->xres_virtual * |
| 224 | var->bits_per_pixel / 8; |
| 225 | fbi->palette_size = var->bits_per_pixel == 8 ? 256 : 16; |
| 226 | |
| 227 | imxfb_activate_var(var, info); |
| 228 | |
| 229 | return 0; |
| 230 | } |
| 231 | |
| 232 | static void imxfb_enable_controller(struct imxfb_info *fbi) |
| 233 | { |
| 234 | pr_debug("Enabling LCD controller\n"); |
| 235 | |
| 236 | /* initialize LCDC */ |
| 237 | LCDC_RMCR &= ~RMCR_LCDC_EN; /* just to be safe... */ |
| 238 | |
| 239 | LCDC_SSA = fbi->screen_dma; |
| 240 | /* physical screen start address */ |
| 241 | LCDC_VPW = VPW_VPW(fbi->max_xres * fbi->max_bpp / 8 / 4); |
| 242 | |
| 243 | LCDC_POS = 0x00000000; /* panning offset 0 (0 pixel offset) */ |
| 244 | |
| 245 | /* disable hardware cursor */ |
| 246 | LCDC_CPOS &= ~(CPOS_CC0 | CPOS_CC1); |
| 247 | |
Sascha Hauer | 7c2f891c | 2005-05-01 08:59:24 -0700 | [diff] [blame] | 248 | LCDC_RMCR = RMCR_LCDC_EN; |
| 249 | |
| 250 | if(fbi->backlight_power) |
| 251 | fbi->backlight_power(1); |
| 252 | if(fbi->lcd_power) |
| 253 | fbi->lcd_power(1); |
| 254 | } |
| 255 | |
| 256 | static void imxfb_disable_controller(struct imxfb_info *fbi) |
| 257 | { |
| 258 | pr_debug("Disabling LCD controller\n"); |
| 259 | |
| 260 | if(fbi->backlight_power) |
| 261 | fbi->backlight_power(0); |
| 262 | if(fbi->lcd_power) |
| 263 | fbi->lcd_power(0); |
| 264 | |
| 265 | LCDC_RMCR = 0; |
| 266 | } |
| 267 | |
| 268 | static int imxfb_blank(int blank, struct fb_info *info) |
| 269 | { |
| 270 | struct imxfb_info *fbi = info->par; |
| 271 | |
| 272 | pr_debug("imxfb_blank: blank=%d\n", blank); |
| 273 | |
| 274 | switch (blank) { |
| 275 | case FB_BLANK_POWERDOWN: |
| 276 | case FB_BLANK_VSYNC_SUSPEND: |
| 277 | case FB_BLANK_HSYNC_SUSPEND: |
| 278 | case FB_BLANK_NORMAL: |
| 279 | imxfb_disable_controller(fbi); |
| 280 | break; |
| 281 | |
| 282 | case FB_BLANK_UNBLANK: |
| 283 | imxfb_enable_controller(fbi); |
| 284 | break; |
| 285 | } |
| 286 | return 0; |
| 287 | } |
| 288 | |
| 289 | static struct fb_ops imxfb_ops = { |
| 290 | .owner = THIS_MODULE, |
| 291 | .fb_check_var = imxfb_check_var, |
| 292 | .fb_set_par = imxfb_set_par, |
| 293 | .fb_setcolreg = imxfb_setcolreg, |
| 294 | .fb_fillrect = cfb_fillrect, |
| 295 | .fb_copyarea = cfb_copyarea, |
| 296 | .fb_imageblit = cfb_imageblit, |
| 297 | .fb_blank = imxfb_blank, |
Sascha Hauer | 7c2f891c | 2005-05-01 08:59:24 -0700 | [diff] [blame] | 298 | }; |
| 299 | |
| 300 | /* |
| 301 | * imxfb_activate_var(): |
| 302 | * Configures LCD Controller based on entries in var parameter. Settings are |
| 303 | * only written to the controller if changes were made. |
| 304 | */ |
| 305 | static int imxfb_activate_var(struct fb_var_screeninfo *var, struct fb_info *info) |
| 306 | { |
| 307 | struct imxfb_info *fbi = info->par; |
| 308 | pr_debug("var: xres=%d hslen=%d lm=%d rm=%d\n", |
| 309 | var->xres, var->hsync_len, |
| 310 | var->left_margin, var->right_margin); |
| 311 | pr_debug("var: yres=%d vslen=%d um=%d bm=%d\n", |
| 312 | var->yres, var->vsync_len, |
| 313 | var->upper_margin, var->lower_margin); |
| 314 | |
| 315 | #if DEBUG_VAR |
| 316 | if (var->xres < 16 || var->xres > 1024) |
| 317 | printk(KERN_ERR "%s: invalid xres %d\n", |
| 318 | info->fix.id, var->xres); |
| 319 | if (var->hsync_len < 1 || var->hsync_len > 64) |
| 320 | printk(KERN_ERR "%s: invalid hsync_len %d\n", |
| 321 | info->fix.id, var->hsync_len); |
| 322 | if (var->left_margin > 255) |
| 323 | printk(KERN_ERR "%s: invalid left_margin %d\n", |
| 324 | info->fix.id, var->left_margin); |
| 325 | if (var->right_margin > 255) |
| 326 | printk(KERN_ERR "%s: invalid right_margin %d\n", |
| 327 | info->fix.id, var->right_margin); |
| 328 | if (var->yres < 1 || var->yres > 511) |
| 329 | printk(KERN_ERR "%s: invalid yres %d\n", |
| 330 | info->fix.id, var->yres); |
| 331 | if (var->vsync_len > 100) |
| 332 | printk(KERN_ERR "%s: invalid vsync_len %d\n", |
| 333 | info->fix.id, var->vsync_len); |
| 334 | if (var->upper_margin > 63) |
| 335 | printk(KERN_ERR "%s: invalid upper_margin %d\n", |
| 336 | info->fix.id, var->upper_margin); |
| 337 | if (var->lower_margin > 255) |
| 338 | printk(KERN_ERR "%s: invalid lower_margin %d\n", |
| 339 | info->fix.id, var->lower_margin); |
| 340 | #endif |
| 341 | |
| 342 | LCDC_HCR = HCR_H_WIDTH(var->hsync_len) | |
| 343 | HCR_H_WAIT_1(var->left_margin) | |
| 344 | HCR_H_WAIT_2(var->right_margin); |
| 345 | |
| 346 | LCDC_VCR = VCR_V_WIDTH(var->vsync_len) | |
| 347 | VCR_V_WAIT_1(var->upper_margin) | |
| 348 | VCR_V_WAIT_2(var->lower_margin); |
| 349 | |
| 350 | LCDC_SIZE = SIZE_XMAX(var->xres) | SIZE_YMAX(var->yres); |
| 351 | LCDC_PCR = fbi->pcr; |
| 352 | LCDC_PWMR = fbi->pwmr; |
| 353 | LCDC_LSCR1 = fbi->lscr1; |
Sascha Hauer | 772a9e6 | 2005-07-17 20:15:36 +0100 | [diff] [blame] | 354 | LCDC_DMACR = fbi->dmacr; |
Sascha Hauer | 7c2f891c | 2005-05-01 08:59:24 -0700 | [diff] [blame] | 355 | |
| 356 | return 0; |
| 357 | } |
| 358 | |
| 359 | static void imxfb_setup_gpio(struct imxfb_info *fbi) |
| 360 | { |
| 361 | int width; |
| 362 | |
| 363 | LCDC_RMCR &= ~(RMCR_LCDC_EN | RMCR_SELF_REF); |
| 364 | |
| 365 | if( fbi->pcr & PCR_TFT ) |
| 366 | width = 16; |
| 367 | else |
| 368 | width = 1 << ((fbi->pcr >> 28) & 0x3); |
| 369 | |
| 370 | switch(width) { |
| 371 | case 16: |
| 372 | imx_gpio_mode(PD30_PF_LD15); |
| 373 | imx_gpio_mode(PD29_PF_LD14); |
| 374 | imx_gpio_mode(PD28_PF_LD13); |
| 375 | imx_gpio_mode(PD27_PF_LD12); |
| 376 | imx_gpio_mode(PD26_PF_LD11); |
| 377 | imx_gpio_mode(PD25_PF_LD10); |
| 378 | imx_gpio_mode(PD24_PF_LD9); |
| 379 | imx_gpio_mode(PD23_PF_LD8); |
| 380 | case 8: |
| 381 | imx_gpio_mode(PD22_PF_LD7); |
| 382 | imx_gpio_mode(PD21_PF_LD6); |
| 383 | imx_gpio_mode(PD20_PF_LD5); |
| 384 | imx_gpio_mode(PD19_PF_LD4); |
| 385 | case 4: |
| 386 | imx_gpio_mode(PD18_PF_LD3); |
| 387 | imx_gpio_mode(PD17_PF_LD2); |
| 388 | case 2: |
| 389 | imx_gpio_mode(PD16_PF_LD1); |
| 390 | case 1: |
| 391 | imx_gpio_mode(PD15_PF_LD0); |
| 392 | } |
| 393 | |
| 394 | /* initialize GPIOs */ |
| 395 | imx_gpio_mode(PD6_PF_LSCLK); |
Sascha Hauer | 7c2f891c | 2005-05-01 08:59:24 -0700 | [diff] [blame] | 396 | imx_gpio_mode(PD11_PF_CONTRAST); |
| 397 | imx_gpio_mode(PD14_PF_FLM_VSYNC); |
| 398 | imx_gpio_mode(PD13_PF_LP_HSYNC); |
Sascha Hauer | 7c2f891c | 2005-05-01 08:59:24 -0700 | [diff] [blame] | 399 | imx_gpio_mode(PD12_PF_ACD_OE); |
Sascha Hauer | 7c2f891c | 2005-05-01 08:59:24 -0700 | [diff] [blame] | 400 | |
Sascha Hauer | 90e16dd | 2007-05-23 13:57:51 -0700 | [diff] [blame] | 401 | /* These are only needed for Sharp HR TFT displays */ |
| 402 | if (fbi->pcr & PCR_SHARP) { |
| 403 | imx_gpio_mode(PD7_PF_REV); |
| 404 | imx_gpio_mode(PD8_PF_CLS); |
| 405 | imx_gpio_mode(PD9_PF_PS); |
| 406 | imx_gpio_mode(PD10_PF_SPL_SPR); |
| 407 | } |
Sascha Hauer | 7c2f891c | 2005-05-01 08:59:24 -0700 | [diff] [blame] | 408 | } |
| 409 | |
| 410 | #ifdef CONFIG_PM |
| 411 | /* |
| 412 | * Power management hooks. Note that we won't be called from IRQ context, |
| 413 | * unlike the blank functions above, so we may sleep. |
| 414 | */ |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 415 | static int imxfb_suspend(struct platform_device *dev, pm_message_t state) |
Sascha Hauer | 7c2f891c | 2005-05-01 08:59:24 -0700 | [diff] [blame] | 416 | { |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 417 | struct imxfb_info *fbi = platform_get_drvdata(dev); |
Harvey Harrison | 5ae1217 | 2008-04-28 02:15:47 -0700 | [diff] [blame] | 418 | pr_debug("%s\n",__func__); |
Sascha Hauer | 7c2f891c | 2005-05-01 08:59:24 -0700 | [diff] [blame] | 419 | |
Russell King | 9480e30 | 2005-10-28 09:52:56 -0700 | [diff] [blame] | 420 | imxfb_disable_controller(fbi); |
Sascha Hauer | 7c2f891c | 2005-05-01 08:59:24 -0700 | [diff] [blame] | 421 | return 0; |
| 422 | } |
| 423 | |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 424 | static int imxfb_resume(struct platform_device *dev) |
Sascha Hauer | 7c2f891c | 2005-05-01 08:59:24 -0700 | [diff] [blame] | 425 | { |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 426 | struct imxfb_info *fbi = platform_get_drvdata(dev); |
Harvey Harrison | 5ae1217 | 2008-04-28 02:15:47 -0700 | [diff] [blame] | 427 | pr_debug("%s\n",__func__); |
Sascha Hauer | 7c2f891c | 2005-05-01 08:59:24 -0700 | [diff] [blame] | 428 | |
Russell King | 9480e30 | 2005-10-28 09:52:56 -0700 | [diff] [blame] | 429 | imxfb_enable_controller(fbi); |
Sascha Hauer | 7c2f891c | 2005-05-01 08:59:24 -0700 | [diff] [blame] | 430 | return 0; |
| 431 | } |
| 432 | #else |
| 433 | #define imxfb_suspend NULL |
| 434 | #define imxfb_resume NULL |
| 435 | #endif |
| 436 | |
| 437 | static int __init imxfb_init_fbinfo(struct device *dev) |
| 438 | { |
| 439 | struct imxfb_mach_info *inf = dev->platform_data; |
| 440 | struct fb_info *info = dev_get_drvdata(dev); |
| 441 | struct imxfb_info *fbi = info->par; |
| 442 | |
Harvey Harrison | 5ae1217 | 2008-04-28 02:15:47 -0700 | [diff] [blame] | 443 | pr_debug("%s\n",__func__); |
Sascha Hauer | 7c2f891c | 2005-05-01 08:59:24 -0700 | [diff] [blame] | 444 | |
| 445 | info->pseudo_palette = kmalloc( sizeof(u32) * 16, GFP_KERNEL); |
| 446 | if (!info->pseudo_palette) |
| 447 | return -ENOMEM; |
| 448 | |
| 449 | memset(fbi, 0, sizeof(struct imxfb_info)); |
| 450 | fbi->dev = dev; |
| 451 | |
| 452 | strlcpy(info->fix.id, IMX_NAME, sizeof(info->fix.id)); |
| 453 | |
| 454 | info->fix.type = FB_TYPE_PACKED_PIXELS; |
| 455 | info->fix.type_aux = 0; |
| 456 | info->fix.xpanstep = 0; |
| 457 | info->fix.ypanstep = 0; |
| 458 | info->fix.ywrapstep = 0; |
| 459 | info->fix.accel = FB_ACCEL_NONE; |
| 460 | |
| 461 | info->var.nonstd = 0; |
| 462 | info->var.activate = FB_ACTIVATE_NOW; |
| 463 | info->var.height = -1; |
| 464 | info->var.width = -1; |
| 465 | info->var.accel_flags = 0; |
| 466 | info->var.vmode = FB_VMODE_NONINTERLACED; |
| 467 | |
| 468 | info->fbops = &imxfb_ops; |
Pavel Pisa | 9da505d | 2007-10-16 01:29:44 -0700 | [diff] [blame] | 469 | info->flags = FBINFO_FLAG_DEFAULT | FBINFO_READS_FAST; |
Sascha Hauer | 7c2f891c | 2005-05-01 08:59:24 -0700 | [diff] [blame] | 470 | |
| 471 | fbi->rgb[RGB_16] = &def_rgb_16; |
| 472 | fbi->rgb[RGB_8] = &def_rgb_8; |
| 473 | |
| 474 | fbi->max_xres = inf->xres; |
| 475 | info->var.xres = inf->xres; |
| 476 | info->var.xres_virtual = inf->xres; |
| 477 | fbi->max_yres = inf->yres; |
| 478 | info->var.yres = inf->yres; |
| 479 | info->var.yres_virtual = inf->yres; |
| 480 | fbi->max_bpp = inf->bpp; |
| 481 | info->var.bits_per_pixel = inf->bpp; |
Pavel Pisa | 9da505d | 2007-10-16 01:29:44 -0700 | [diff] [blame] | 482 | info->var.nonstd = inf->nonstd; |
Sascha Hauer | 7c2f891c | 2005-05-01 08:59:24 -0700 | [diff] [blame] | 483 | info->var.pixclock = inf->pixclock; |
| 484 | info->var.hsync_len = inf->hsync_len; |
| 485 | info->var.left_margin = inf->left_margin; |
| 486 | info->var.right_margin = inf->right_margin; |
| 487 | info->var.vsync_len = inf->vsync_len; |
| 488 | info->var.upper_margin = inf->upper_margin; |
| 489 | info->var.lower_margin = inf->lower_margin; |
| 490 | info->var.sync = inf->sync; |
| 491 | info->var.grayscale = inf->cmap_greyscale; |
| 492 | fbi->cmap_inverse = inf->cmap_inverse; |
Sascha Hauer | 90e16dd | 2007-05-23 13:57:51 -0700 | [diff] [blame] | 493 | fbi->cmap_static = inf->cmap_static; |
Sascha Hauer | 7c2f891c | 2005-05-01 08:59:24 -0700 | [diff] [blame] | 494 | fbi->pcr = inf->pcr; |
| 495 | fbi->lscr1 = inf->lscr1; |
Sascha Hauer | 772a9e6 | 2005-07-17 20:15:36 +0100 | [diff] [blame] | 496 | fbi->dmacr = inf->dmacr; |
Sascha Hauer | 7c2f891c | 2005-05-01 08:59:24 -0700 | [diff] [blame] | 497 | fbi->pwmr = inf->pwmr; |
| 498 | fbi->lcd_power = inf->lcd_power; |
| 499 | fbi->backlight_power = inf->backlight_power; |
| 500 | info->fix.smem_len = fbi->max_xres * fbi->max_yres * |
| 501 | fbi->max_bpp / 8; |
| 502 | |
| 503 | return 0; |
| 504 | } |
| 505 | |
| 506 | /* |
| 507 | * Allocates the DRAM memory for the frame buffer. This buffer is |
| 508 | * remapped into a non-cached, non-buffered, memory region to |
| 509 | * allow pixel writes to occur without flushing the cache. |
| 510 | * Once this area is remapped, all virtual memory access to the |
| 511 | * video memory should occur at the new region. |
| 512 | */ |
| 513 | static int __init imxfb_map_video_memory(struct fb_info *info) |
| 514 | { |
| 515 | struct imxfb_info *fbi = info->par; |
| 516 | |
| 517 | fbi->map_size = PAGE_ALIGN(info->fix.smem_len); |
| 518 | fbi->map_cpu = dma_alloc_writecombine(fbi->dev, fbi->map_size, |
| 519 | &fbi->map_dma,GFP_KERNEL); |
| 520 | |
| 521 | if (fbi->map_cpu) { |
| 522 | info->screen_base = fbi->map_cpu; |
| 523 | fbi->screen_cpu = fbi->map_cpu; |
| 524 | fbi->screen_dma = fbi->map_dma; |
| 525 | info->fix.smem_start = fbi->screen_dma; |
| 526 | } |
| 527 | |
| 528 | return fbi->map_cpu ? 0 : -ENOMEM; |
| 529 | } |
| 530 | |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 531 | static int __init imxfb_probe(struct platform_device *pdev) |
Sascha Hauer | 7c2f891c | 2005-05-01 08:59:24 -0700 | [diff] [blame] | 532 | { |
Sascha Hauer | 7c2f891c | 2005-05-01 08:59:24 -0700 | [diff] [blame] | 533 | struct imxfb_info *fbi; |
| 534 | struct fb_info *info; |
| 535 | struct imxfb_mach_info *inf; |
| 536 | struct resource *res; |
| 537 | int ret; |
| 538 | |
| 539 | printk("i.MX Framebuffer driver\n"); |
| 540 | |
| 541 | res = platform_get_resource(pdev, IORESOURCE_MEM, 0); |
| 542 | if(!res) |
| 543 | return -ENODEV; |
| 544 | |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 545 | inf = pdev->dev.platform_data; |
Sascha Hauer | 7c2f891c | 2005-05-01 08:59:24 -0700 | [diff] [blame] | 546 | if(!inf) { |
Pavel Pisa | f99c892 | 2006-01-07 10:44:32 +0000 | [diff] [blame] | 547 | dev_err(&pdev->dev,"No platform_data available\n"); |
Sascha Hauer | 7c2f891c | 2005-05-01 08:59:24 -0700 | [diff] [blame] | 548 | return -ENOMEM; |
| 549 | } |
| 550 | |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 551 | info = framebuffer_alloc(sizeof(struct imxfb_info), &pdev->dev); |
Sascha Hauer | 7c2f891c | 2005-05-01 08:59:24 -0700 | [diff] [blame] | 552 | if(!info) |
| 553 | return -ENOMEM; |
| 554 | |
| 555 | fbi = info->par; |
| 556 | |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 557 | platform_set_drvdata(pdev, info); |
Sascha Hauer | 7c2f891c | 2005-05-01 08:59:24 -0700 | [diff] [blame] | 558 | |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 559 | ret = imxfb_init_fbinfo(&pdev->dev); |
Sascha Hauer | 7c2f891c | 2005-05-01 08:59:24 -0700 | [diff] [blame] | 560 | if( ret < 0 ) |
| 561 | goto failed_init; |
| 562 | |
| 563 | res = request_mem_region(res->start, res->end - res->start + 1, "IMXFB"); |
| 564 | if (!res) { |
| 565 | ret = -EBUSY; |
| 566 | goto failed_regs; |
| 567 | } |
| 568 | |
| 569 | if (!inf->fixed_screen_cpu) { |
| 570 | ret = imxfb_map_video_memory(info); |
| 571 | if (ret) { |
Pavel Pisa | f99c892 | 2006-01-07 10:44:32 +0000 | [diff] [blame] | 572 | dev_err(&pdev->dev, "Failed to allocate video RAM: %d\n", ret); |
Sascha Hauer | 7c2f891c | 2005-05-01 08:59:24 -0700 | [diff] [blame] | 573 | ret = -ENOMEM; |
| 574 | goto failed_map; |
| 575 | } |
| 576 | } else { |
| 577 | /* Fixed framebuffer mapping enables location of the screen in eSRAM */ |
| 578 | fbi->map_cpu = inf->fixed_screen_cpu; |
| 579 | fbi->map_dma = inf->fixed_screen_dma; |
| 580 | info->screen_base = fbi->map_cpu; |
| 581 | fbi->screen_cpu = fbi->map_cpu; |
| 582 | fbi->screen_dma = fbi->map_dma; |
| 583 | info->fix.smem_start = fbi->screen_dma; |
| 584 | } |
| 585 | |
| 586 | /* |
| 587 | * This makes sure that our colour bitfield |
| 588 | * descriptors are correctly initialised. |
| 589 | */ |
| 590 | imxfb_check_var(&info->var, info); |
| 591 | |
| 592 | ret = fb_alloc_cmap(&info->cmap, 1<<info->var.bits_per_pixel, 0); |
| 593 | if (ret < 0) |
| 594 | goto failed_cmap; |
| 595 | |
| 596 | imxfb_setup_gpio(fbi); |
| 597 | |
| 598 | imxfb_set_par(info); |
| 599 | ret = register_framebuffer(info); |
| 600 | if (ret < 0) { |
Pavel Pisa | f99c892 | 2006-01-07 10:44:32 +0000 | [diff] [blame] | 601 | dev_err(&pdev->dev, "failed to register framebuffer\n"); |
Sascha Hauer | 7c2f891c | 2005-05-01 08:59:24 -0700 | [diff] [blame] | 602 | goto failed_register; |
| 603 | } |
| 604 | |
| 605 | imxfb_enable_controller(fbi); |
| 606 | |
| 607 | return 0; |
| 608 | |
| 609 | failed_register: |
| 610 | fb_dealloc_cmap(&info->cmap); |
| 611 | failed_cmap: |
| 612 | if (!inf->fixed_screen_cpu) |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 613 | dma_free_writecombine(&pdev->dev,fbi->map_size,fbi->map_cpu, |
Sascha Hauer | 7c2f891c | 2005-05-01 08:59:24 -0700 | [diff] [blame] | 614 | fbi->map_dma); |
| 615 | failed_map: |
| 616 | kfree(info->pseudo_palette); |
| 617 | failed_regs: |
| 618 | release_mem_region(res->start, res->end - res->start); |
| 619 | failed_init: |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 620 | platform_set_drvdata(pdev, NULL); |
Sascha Hauer | 7c2f891c | 2005-05-01 08:59:24 -0700 | [diff] [blame] | 621 | framebuffer_release(info); |
| 622 | return ret; |
| 623 | } |
| 624 | |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 625 | static int imxfb_remove(struct platform_device *pdev) |
Sascha Hauer | 7c2f891c | 2005-05-01 08:59:24 -0700 | [diff] [blame] | 626 | { |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 627 | struct fb_info *info = platform_get_drvdata(pdev); |
Sascha Hauer | 772a9e6 | 2005-07-17 20:15:36 +0100 | [diff] [blame] | 628 | struct imxfb_info *fbi = info->par; |
Sascha Hauer | 7c2f891c | 2005-05-01 08:59:24 -0700 | [diff] [blame] | 629 | struct resource *res; |
| 630 | |
| 631 | res = platform_get_resource(pdev, IORESOURCE_MEM, 0); |
| 632 | |
Sascha Hauer | 772a9e6 | 2005-07-17 20:15:36 +0100 | [diff] [blame] | 633 | imxfb_disable_controller(fbi); |
Sascha Hauer | 7c2f891c | 2005-05-01 08:59:24 -0700 | [diff] [blame] | 634 | |
| 635 | unregister_framebuffer(info); |
| 636 | |
| 637 | fb_dealloc_cmap(&info->cmap); |
| 638 | kfree(info->pseudo_palette); |
| 639 | framebuffer_release(info); |
| 640 | |
| 641 | release_mem_region(res->start, res->end - res->start + 1); |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 642 | platform_set_drvdata(pdev, NULL); |
Sascha Hauer | 7c2f891c | 2005-05-01 08:59:24 -0700 | [diff] [blame] | 643 | |
| 644 | return 0; |
| 645 | } |
| 646 | |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 647 | void imxfb_shutdown(struct platform_device * dev) |
Sascha Hauer | 7c2f891c | 2005-05-01 08:59:24 -0700 | [diff] [blame] | 648 | { |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 649 | struct fb_info *info = platform_get_drvdata(dev); |
Sascha Hauer | 772a9e6 | 2005-07-17 20:15:36 +0100 | [diff] [blame] | 650 | struct imxfb_info *fbi = info->par; |
| 651 | imxfb_disable_controller(fbi); |
Sascha Hauer | 7c2f891c | 2005-05-01 08:59:24 -0700 | [diff] [blame] | 652 | } |
| 653 | |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 654 | static struct platform_driver imxfb_driver = { |
Sascha Hauer | 7c2f891c | 2005-05-01 08:59:24 -0700 | [diff] [blame] | 655 | .probe = imxfb_probe, |
| 656 | .suspend = imxfb_suspend, |
| 657 | .resume = imxfb_resume, |
| 658 | .remove = imxfb_remove, |
| 659 | .shutdown = imxfb_shutdown, |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 660 | .driver = { |
| 661 | .name = "imx-fb", |
| 662 | }, |
Sascha Hauer | 7c2f891c | 2005-05-01 08:59:24 -0700 | [diff] [blame] | 663 | }; |
| 664 | |
| 665 | int __init imxfb_init(void) |
| 666 | { |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 667 | return platform_driver_register(&imxfb_driver); |
Sascha Hauer | 7c2f891c | 2005-05-01 08:59:24 -0700 | [diff] [blame] | 668 | } |
| 669 | |
| 670 | static void __exit imxfb_cleanup(void) |
| 671 | { |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 672 | platform_driver_unregister(&imxfb_driver); |
Sascha Hauer | 7c2f891c | 2005-05-01 08:59:24 -0700 | [diff] [blame] | 673 | } |
| 674 | |
| 675 | module_init(imxfb_init); |
| 676 | module_exit(imxfb_cleanup); |
| 677 | |
| 678 | MODULE_DESCRIPTION("Motorola i.MX framebuffer driver"); |
| 679 | MODULE_AUTHOR("Sascha Hauer, Pengutronix"); |
| 680 | MODULE_LICENSE("GPL"); |