Nobuhiro Iwamatsu | 4a25e41 | 2008-07-23 21:31:46 -0700 | [diff] [blame] | 1 | /* |
| 2 | * SH7760/SH7763 LCDC Framebuffer driver. |
| 3 | * |
| 4 | * (c) 2006-2008 MSC Vertriebsges.m.b.H., |
| 5 | * Manuel Lauss <mano@roarinelk.homelinux.net> |
| 6 | * (c) 2008 Nobuhiro Iwamatsu <iwamatsu.nobuhiro@renesas.com> |
| 7 | * |
| 8 | * This file is subject to the terms and conditions of the GNU General |
| 9 | * Public License. See the file COPYING in the main directory of this |
| 10 | * archive for more details. |
| 11 | * |
| 12 | * PLEASE HAVE A LOOK AT Documentation/fb/sh7760fb.txt! |
| 13 | * |
| 14 | * Thanks to Siegfried Schaefer <s.schaefer at schaefer-edv.de> |
| 15 | * for his original source and testing! |
Nobuhiro Iwamatsu | 679dc3c | 2008-11-21 14:34:25 +0900 | [diff] [blame] | 16 | * |
| 17 | * sh7760_setcolreg get from drivers/video/sh_mobile_lcdcfb.c |
Nobuhiro Iwamatsu | 4a25e41 | 2008-07-23 21:31:46 -0700 | [diff] [blame] | 18 | */ |
| 19 | |
| 20 | #include <linux/completion.h> |
| 21 | #include <linux/delay.h> |
| 22 | #include <linux/dma-mapping.h> |
| 23 | #include <linux/fb.h> |
| 24 | #include <linux/interrupt.h> |
| 25 | #include <linux/io.h> |
| 26 | #include <linux/kernel.h> |
| 27 | #include <linux/module.h> |
| 28 | #include <linux/platform_device.h> |
Tejun Heo | 5a0e3ad | 2010-03-24 17:04:11 +0900 | [diff] [blame] | 29 | #include <linux/slab.h> |
Nobuhiro Iwamatsu | 4a25e41 | 2008-07-23 21:31:46 -0700 | [diff] [blame] | 30 | |
| 31 | #include <asm/sh7760fb.h> |
| 32 | |
| 33 | struct sh7760fb_par { |
| 34 | void __iomem *base; |
| 35 | int irq; |
| 36 | |
| 37 | struct sh7760fb_platdata *pd; /* display information */ |
| 38 | |
| 39 | dma_addr_t fbdma; /* physical address */ |
| 40 | |
| 41 | int rot; /* rotation enabled? */ |
| 42 | |
| 43 | u32 pseudo_palette[16]; |
| 44 | |
| 45 | struct platform_device *dev; |
| 46 | struct resource *ioarea; |
| 47 | struct completion vsync; /* vsync irq event */ |
| 48 | }; |
| 49 | |
| 50 | static irqreturn_t sh7760fb_irq(int irq, void *data) |
| 51 | { |
| 52 | struct completion *c = data; |
| 53 | |
| 54 | complete(c); |
| 55 | |
| 56 | return IRQ_HANDLED; |
| 57 | } |
| 58 | |
Nobuhiro Iwamatsu | 4a25e41 | 2008-07-23 21:31:46 -0700 | [diff] [blame] | 59 | /* wait_for_lps - wait until power supply has reached a certain state. */ |
| 60 | static int wait_for_lps(struct sh7760fb_par *par, int val) |
| 61 | { |
| 62 | int i = 100; |
| 63 | while (--i && ((ioread16(par->base + LDPMMR) & 3) != val)) |
| 64 | msleep(1); |
| 65 | |
| 66 | if (i <= 0) |
| 67 | return -ETIMEDOUT; |
| 68 | |
| 69 | return 0; |
| 70 | } |
| 71 | |
| 72 | /* en/disable the LCDC */ |
| 73 | static int sh7760fb_blank(int blank, struct fb_info *info) |
| 74 | { |
| 75 | struct sh7760fb_par *par = info->par; |
| 76 | struct sh7760fb_platdata *pd = par->pd; |
| 77 | unsigned short cntr = ioread16(par->base + LDCNTR); |
| 78 | unsigned short intr = ioread16(par->base + LDINTR); |
| 79 | int lps; |
| 80 | |
| 81 | if (blank == FB_BLANK_UNBLANK) { |
| 82 | intr |= VINT_START; |
| 83 | cntr = LDCNTR_DON2 | LDCNTR_DON; |
| 84 | lps = 3; |
| 85 | } else { |
| 86 | intr &= ~VINT_START; |
| 87 | cntr = LDCNTR_DON2; |
| 88 | lps = 0; |
| 89 | } |
| 90 | |
| 91 | if (pd->blank) |
| 92 | pd->blank(blank); |
| 93 | |
| 94 | iowrite16(intr, par->base + LDINTR); |
| 95 | iowrite16(cntr, par->base + LDCNTR); |
| 96 | |
| 97 | return wait_for_lps(par, lps); |
| 98 | } |
| 99 | |
Nobuhiro Iwamatsu | 679dc3c | 2008-11-21 14:34:25 +0900 | [diff] [blame] | 100 | static int sh7760_setcolreg (u_int regno, |
| 101 | u_int red, u_int green, u_int blue, |
| 102 | u_int transp, struct fb_info *info) |
Nobuhiro Iwamatsu | 4a25e41 | 2008-07-23 21:31:46 -0700 | [diff] [blame] | 103 | { |
Nobuhiro Iwamatsu | 679dc3c | 2008-11-21 14:34:25 +0900 | [diff] [blame] | 104 | u32 *palette = info->pseudo_palette; |
Nobuhiro Iwamatsu | 4a25e41 | 2008-07-23 21:31:46 -0700 | [diff] [blame] | 105 | |
Nobuhiro Iwamatsu | 679dc3c | 2008-11-21 14:34:25 +0900 | [diff] [blame] | 106 | if (regno >= 16) |
| 107 | return -EINVAL; |
Nobuhiro Iwamatsu | 4a25e41 | 2008-07-23 21:31:46 -0700 | [diff] [blame] | 108 | |
Nobuhiro Iwamatsu | 679dc3c | 2008-11-21 14:34:25 +0900 | [diff] [blame] | 109 | /* only FB_VISUAL_TRUECOLOR supported */ |
Nobuhiro Iwamatsu | 4a25e41 | 2008-07-23 21:31:46 -0700 | [diff] [blame] | 110 | |
Nobuhiro Iwamatsu | 679dc3c | 2008-11-21 14:34:25 +0900 | [diff] [blame] | 111 | red >>= 16 - info->var.red.length; |
| 112 | green >>= 16 - info->var.green.length; |
| 113 | blue >>= 16 - info->var.blue.length; |
| 114 | transp >>= 16 - info->var.transp.length; |
Nobuhiro Iwamatsu | 4a25e41 | 2008-07-23 21:31:46 -0700 | [diff] [blame] | 115 | |
Nobuhiro Iwamatsu | 679dc3c | 2008-11-21 14:34:25 +0900 | [diff] [blame] | 116 | palette[regno] = (red << info->var.red.offset) | |
| 117 | (green << info->var.green.offset) | |
| 118 | (blue << info->var.blue.offset) | |
| 119 | (transp << info->var.transp.offset); |
Nobuhiro Iwamatsu | 4a25e41 | 2008-07-23 21:31:46 -0700 | [diff] [blame] | 120 | |
Nobuhiro Iwamatsu | 679dc3c | 2008-11-21 14:34:25 +0900 | [diff] [blame] | 121 | return 0; |
Nobuhiro Iwamatsu | 4a25e41 | 2008-07-23 21:31:46 -0700 | [diff] [blame] | 122 | } |
| 123 | |
Nobuhiro Iwamatsu | 4a25e41 | 2008-07-23 21:31:46 -0700 | [diff] [blame] | 124 | static int sh7760fb_get_color_info(struct device *dev, |
| 125 | u16 lddfr, int *bpp, int *gray) |
| 126 | { |
| 127 | int lbpp, lgray; |
| 128 | |
| 129 | lgray = lbpp = 0; |
| 130 | |
| 131 | switch (lddfr & LDDFR_COLOR_MASK) { |
| 132 | case LDDFR_1BPP_MONO: |
| 133 | lgray = 1; |
| 134 | lbpp = 1; |
| 135 | break; |
| 136 | case LDDFR_2BPP_MONO: |
| 137 | lgray = 1; |
| 138 | lbpp = 2; |
| 139 | break; |
| 140 | case LDDFR_4BPP_MONO: |
| 141 | lgray = 1; |
| 142 | case LDDFR_4BPP: |
| 143 | lbpp = 4; |
| 144 | break; |
| 145 | case LDDFR_6BPP_MONO: |
| 146 | lgray = 1; |
| 147 | case LDDFR_8BPP: |
| 148 | lbpp = 8; |
| 149 | break; |
| 150 | case LDDFR_16BPP_RGB555: |
| 151 | case LDDFR_16BPP_RGB565: |
| 152 | lbpp = 16; |
| 153 | lgray = 0; |
| 154 | break; |
| 155 | default: |
| 156 | dev_dbg(dev, "unsupported LDDFR bit depth.\n"); |
| 157 | return -EINVAL; |
| 158 | } |
| 159 | |
| 160 | if (bpp) |
| 161 | *bpp = lbpp; |
| 162 | if (gray) |
| 163 | *gray = lgray; |
| 164 | |
| 165 | return 0; |
| 166 | } |
| 167 | |
| 168 | static int sh7760fb_check_var(struct fb_var_screeninfo *var, |
| 169 | struct fb_info *info) |
| 170 | { |
| 171 | struct fb_fix_screeninfo *fix = &info->fix; |
| 172 | struct sh7760fb_par *par = info->par; |
| 173 | int ret, bpp; |
| 174 | |
| 175 | /* get color info from register value */ |
| 176 | ret = sh7760fb_get_color_info(info->dev, par->pd->lddfr, &bpp, NULL); |
| 177 | if (ret) |
| 178 | return ret; |
| 179 | |
| 180 | var->bits_per_pixel = bpp; |
| 181 | |
| 182 | if ((var->grayscale) && (var->bits_per_pixel == 1)) |
| 183 | fix->visual = FB_VISUAL_MONO10; |
| 184 | else if (var->bits_per_pixel >= 15) |
| 185 | fix->visual = FB_VISUAL_TRUECOLOR; |
| 186 | else |
| 187 | fix->visual = FB_VISUAL_PSEUDOCOLOR; |
| 188 | |
| 189 | /* TODO: add some more validation here */ |
| 190 | return 0; |
| 191 | } |
| 192 | |
| 193 | /* |
| 194 | * sh7760fb_set_par - set videomode. |
| 195 | * |
| 196 | * NOTE: The rotation, grayscale and DSTN codepaths are |
| 197 | * totally untested! |
| 198 | */ |
| 199 | static int sh7760fb_set_par(struct fb_info *info) |
| 200 | { |
| 201 | struct sh7760fb_par *par = info->par; |
| 202 | struct fb_videomode *vm = par->pd->def_mode; |
| 203 | unsigned long sbase, dstn_off, ldsarl, stride; |
| 204 | unsigned short hsynp, hsynw, htcn, hdcn; |
| 205 | unsigned short vsynp, vsynw, vtln, vdln; |
| 206 | unsigned short lddfr, ldmtr; |
| 207 | int ret, bpp, gray; |
| 208 | |
| 209 | par->rot = par->pd->rotate; |
| 210 | |
| 211 | /* rotate only works with xres <= 320 */ |
| 212 | if (par->rot && (vm->xres > 320)) { |
| 213 | dev_dbg(info->dev, "rotation disabled due to display size\n"); |
| 214 | par->rot = 0; |
| 215 | } |
| 216 | |
| 217 | /* calculate LCDC reg vals from display parameters */ |
| 218 | hsynp = vm->right_margin + vm->xres; |
| 219 | hsynw = vm->hsync_len; |
| 220 | htcn = vm->left_margin + hsynp + hsynw; |
| 221 | hdcn = vm->xres; |
| 222 | vsynp = vm->lower_margin + vm->yres; |
| 223 | vsynw = vm->vsync_len; |
| 224 | vtln = vm->upper_margin + vsynp + vsynw; |
| 225 | vdln = vm->yres; |
| 226 | |
| 227 | /* get color info from register value */ |
| 228 | ret = sh7760fb_get_color_info(info->dev, par->pd->lddfr, &bpp, &gray); |
| 229 | if (ret) |
| 230 | return ret; |
| 231 | |
| 232 | dev_dbg(info->dev, "%dx%d %dbpp %s (orientation %s)\n", hdcn, |
| 233 | vdln, bpp, gray ? "grayscale" : "color", |
| 234 | par->rot ? "rotated" : "normal"); |
| 235 | |
| 236 | #ifdef CONFIG_CPU_LITTLE_ENDIAN |
| 237 | lddfr = par->pd->lddfr | (1 << 8); |
| 238 | #else |
| 239 | lddfr = par->pd->lddfr & ~(1 << 8); |
| 240 | #endif |
| 241 | |
| 242 | ldmtr = par->pd->ldmtr; |
| 243 | |
| 244 | if (!(vm->sync & FB_SYNC_HOR_HIGH_ACT)) |
| 245 | ldmtr |= LDMTR_CL1POL; |
| 246 | if (!(vm->sync & FB_SYNC_VERT_HIGH_ACT)) |
| 247 | ldmtr |= LDMTR_FLMPOL; |
| 248 | |
| 249 | /* shut down LCDC before changing display parameters */ |
| 250 | sh7760fb_blank(FB_BLANK_POWERDOWN, info); |
| 251 | |
| 252 | iowrite16(par->pd->ldickr, par->base + LDICKR); /* pixclock */ |
| 253 | iowrite16(ldmtr, par->base + LDMTR); /* polarities */ |
| 254 | iowrite16(lddfr, par->base + LDDFR); /* color/depth */ |
| 255 | iowrite16((par->rot ? 1 << 13 : 0), par->base + LDSMR); /* rotate */ |
| 256 | iowrite16(par->pd->ldpmmr, par->base + LDPMMR); /* Power Management */ |
| 257 | iowrite16(par->pd->ldpspr, par->base + LDPSPR); /* Power Supply Ctrl */ |
| 258 | |
| 259 | /* display resolution */ |
| 260 | iowrite16(((htcn >> 3) - 1) | (((hdcn >> 3) - 1) << 8), |
| 261 | par->base + LDHCNR); |
| 262 | iowrite16(vdln - 1, par->base + LDVDLNR); |
| 263 | iowrite16(vtln - 1, par->base + LDVTLNR); |
| 264 | /* h/v sync signals */ |
| 265 | iowrite16((vsynp - 1) | ((vsynw - 1) << 12), par->base + LDVSYNR); |
| 266 | iowrite16(((hsynp >> 3) - 1) | (((hsynw >> 3) - 1) << 12), |
| 267 | par->base + LDHSYNR); |
| 268 | /* AC modulation sig */ |
| 269 | iowrite16(par->pd->ldaclnr, par->base + LDACLNR); |
| 270 | |
| 271 | stride = (par->rot) ? vtln : hdcn; |
| 272 | if (!gray) |
| 273 | stride *= (bpp + 7) >> 3; |
| 274 | else { |
| 275 | if (bpp == 1) |
| 276 | stride >>= 3; |
| 277 | else if (bpp == 2) |
| 278 | stride >>= 2; |
| 279 | else if (bpp == 4) |
| 280 | stride >>= 1; |
| 281 | /* 6 bpp == 8 bpp */ |
| 282 | } |
| 283 | |
| 284 | /* if rotated, stride must be power of 2 */ |
| 285 | if (par->rot) { |
| 286 | unsigned long bit = 1 << 31; |
| 287 | while (bit) { |
| 288 | if (stride & bit) |
| 289 | break; |
| 290 | bit >>= 1; |
| 291 | } |
| 292 | if (stride & ~bit) |
| 293 | stride = bit << 1; /* not P-o-2, round up */ |
| 294 | } |
| 295 | iowrite16(stride, par->base + LDLAOR); |
| 296 | |
| 297 | /* set display mem start address */ |
| 298 | sbase = (unsigned long)par->fbdma; |
| 299 | if (par->rot) |
| 300 | sbase += (hdcn - 1) * stride; |
| 301 | |
| 302 | iowrite32(sbase, par->base + LDSARU); |
| 303 | |
| 304 | /* |
| 305 | * for DSTN need to set address for lower half. |
| 306 | * I (mlau) don't know which address to set it to, |
| 307 | * so I guessed at (stride * yres/2). |
| 308 | */ |
| 309 | if (((ldmtr & 0x003f) >= LDMTR_DSTN_MONO_8) && |
| 310 | ((ldmtr & 0x003f) <= LDMTR_DSTN_COLOR_16)) { |
| 311 | |
| 312 | dev_dbg(info->dev, " ***** DSTN untested! *****\n"); |
| 313 | |
| 314 | dstn_off = stride; |
| 315 | if (par->rot) |
| 316 | dstn_off *= hdcn >> 1; |
| 317 | else |
| 318 | dstn_off *= vdln >> 1; |
| 319 | |
| 320 | ldsarl = sbase + dstn_off; |
| 321 | } else |
| 322 | ldsarl = 0; |
| 323 | |
| 324 | iowrite32(ldsarl, par->base + LDSARL); /* mem for lower half of DSTN */ |
| 325 | |
Krzysztof Helt | 537a1bf | 2009-06-30 11:41:29 -0700 | [diff] [blame] | 326 | info->fix.line_length = stride; |
| 327 | |
Nobuhiro Iwamatsu | 4a25e41 | 2008-07-23 21:31:46 -0700 | [diff] [blame] | 328 | sh7760fb_check_var(&info->var, info); |
| 329 | |
| 330 | sh7760fb_blank(FB_BLANK_UNBLANK, info); /* panel on! */ |
| 331 | |
| 332 | dev_dbg(info->dev, "hdcn : %6d htcn : %6d\n", hdcn, htcn); |
| 333 | dev_dbg(info->dev, "hsynw : %6d hsynp : %6d\n", hsynw, hsynp); |
| 334 | dev_dbg(info->dev, "vdln : %6d vtln : %6d\n", vdln, vtln); |
| 335 | dev_dbg(info->dev, "vsynw : %6d vsynp : %6d\n", vsynw, vsynp); |
| 336 | dev_dbg(info->dev, "clksrc: %6d clkdiv: %6d\n", |
| 337 | (par->pd->ldickr >> 12) & 3, par->pd->ldickr & 0x1f); |
| 338 | dev_dbg(info->dev, "ldpmmr: 0x%04x ldpspr: 0x%04x\n", par->pd->ldpmmr, |
| 339 | par->pd->ldpspr); |
| 340 | dev_dbg(info->dev, "ldmtr : 0x%04x lddfr : 0x%04x\n", ldmtr, lddfr); |
| 341 | dev_dbg(info->dev, "ldlaor: %ld\n", stride); |
| 342 | dev_dbg(info->dev, "ldsaru: 0x%08lx ldsarl: 0x%08lx\n", sbase, ldsarl); |
| 343 | |
| 344 | return 0; |
| 345 | } |
| 346 | |
| 347 | static struct fb_ops sh7760fb_ops = { |
| 348 | .owner = THIS_MODULE, |
| 349 | .fb_blank = sh7760fb_blank, |
| 350 | .fb_check_var = sh7760fb_check_var, |
Nobuhiro Iwamatsu | 679dc3c | 2008-11-21 14:34:25 +0900 | [diff] [blame] | 351 | .fb_setcolreg = sh7760_setcolreg, |
Nobuhiro Iwamatsu | 4a25e41 | 2008-07-23 21:31:46 -0700 | [diff] [blame] | 352 | .fb_set_par = sh7760fb_set_par, |
| 353 | .fb_fillrect = cfb_fillrect, |
| 354 | .fb_copyarea = cfb_copyarea, |
| 355 | .fb_imageblit = cfb_imageblit, |
| 356 | }; |
| 357 | |
| 358 | static void sh7760fb_free_mem(struct fb_info *info) |
| 359 | { |
| 360 | struct sh7760fb_par *par = info->par; |
| 361 | |
| 362 | if (!info->screen_base) |
| 363 | return; |
| 364 | |
| 365 | dma_free_coherent(info->dev, info->screen_size, |
| 366 | info->screen_base, par->fbdma); |
| 367 | |
| 368 | par->fbdma = 0; |
| 369 | info->screen_base = NULL; |
| 370 | info->screen_size = 0; |
| 371 | } |
| 372 | |
| 373 | /* allocate the framebuffer memory. This memory must be in Area3, |
| 374 | * (dictated by the DMA engine) and contiguous, at a 512 byte boundary. |
| 375 | */ |
| 376 | static int sh7760fb_alloc_mem(struct fb_info *info) |
| 377 | { |
| 378 | struct sh7760fb_par *par = info->par; |
| 379 | void *fbmem; |
| 380 | unsigned long vram; |
| 381 | int ret, bpp; |
| 382 | |
| 383 | if (info->screen_base) |
| 384 | return 0; |
| 385 | |
| 386 | /* get color info from register value */ |
| 387 | ret = sh7760fb_get_color_info(info->dev, par->pd->lddfr, &bpp, NULL); |
| 388 | if (ret) { |
| 389 | printk(KERN_ERR "colinfo\n"); |
| 390 | return ret; |
| 391 | } |
| 392 | |
| 393 | /* min VRAM: xres_min = 16, yres_min = 1, bpp = 1: 2byte -> 1 page |
| 394 | max VRAM: xres_max = 1024, yres_max = 1024, bpp = 16: 2MB */ |
| 395 | |
| 396 | vram = info->var.xres * info->var.yres; |
| 397 | if (info->var.grayscale) { |
| 398 | if (bpp == 1) |
| 399 | vram >>= 3; |
| 400 | else if (bpp == 2) |
| 401 | vram >>= 2; |
| 402 | else if (bpp == 4) |
| 403 | vram >>= 1; |
| 404 | } else if (bpp > 8) |
| 405 | vram *= 2; |
| 406 | if ((vram < 1) || (vram > 1024 * 2048)) { |
| 407 | dev_dbg(info->dev, "too much VRAM required. Check settings\n"); |
| 408 | return -ENODEV; |
| 409 | } |
| 410 | |
| 411 | if (vram < PAGE_SIZE) |
| 412 | vram = PAGE_SIZE; |
| 413 | |
| 414 | fbmem = dma_alloc_coherent(info->dev, vram, &par->fbdma, GFP_KERNEL); |
| 415 | |
| 416 | if (!fbmem) |
| 417 | return -ENOMEM; |
| 418 | |
| 419 | if ((par->fbdma & SH7760FB_DMA_MASK) != SH7760FB_DMA_MASK) { |
| 420 | sh7760fb_free_mem(info); |
| 421 | dev_err(info->dev, "kernel gave me memory at 0x%08lx, which is" |
| 422 | "unusable for the LCDC\n", (unsigned long)par->fbdma); |
| 423 | return -ENOMEM; |
| 424 | } |
| 425 | |
| 426 | info->screen_base = fbmem; |
| 427 | info->screen_size = vram; |
Krzysztof Helt | 537a1bf | 2009-06-30 11:41:29 -0700 | [diff] [blame] | 428 | info->fix.smem_start = (unsigned long)info->screen_base; |
| 429 | info->fix.smem_len = info->screen_size; |
Nobuhiro Iwamatsu | 4a25e41 | 2008-07-23 21:31:46 -0700 | [diff] [blame] | 430 | |
| 431 | return 0; |
| 432 | } |
| 433 | |
| 434 | static int __devinit sh7760fb_probe(struct platform_device *pdev) |
| 435 | { |
| 436 | struct fb_info *info; |
| 437 | struct resource *res; |
| 438 | struct sh7760fb_par *par; |
| 439 | int ret; |
| 440 | |
| 441 | res = platform_get_resource(pdev, IORESOURCE_MEM, 0); |
| 442 | if (unlikely(res == NULL)) { |
| 443 | dev_err(&pdev->dev, "invalid resource\n"); |
| 444 | return -EINVAL; |
| 445 | } |
| 446 | |
| 447 | info = framebuffer_alloc(sizeof(struct sh7760fb_par), &pdev->dev); |
| 448 | if (!info) |
| 449 | return -ENOMEM; |
| 450 | |
| 451 | par = info->par; |
| 452 | par->dev = pdev; |
| 453 | |
| 454 | par->pd = pdev->dev.platform_data; |
| 455 | if (!par->pd) { |
| 456 | dev_dbg(info->dev, "no display setup data!\n"); |
| 457 | ret = -ENODEV; |
| 458 | goto out_fb; |
| 459 | } |
| 460 | |
| 461 | par->ioarea = request_mem_region(res->start, |
axel lin | e0998ea | 2011-01-29 09:35:45 +0000 | [diff] [blame] | 462 | resource_size(res), pdev->name); |
Nobuhiro Iwamatsu | 4a25e41 | 2008-07-23 21:31:46 -0700 | [diff] [blame] | 463 | if (!par->ioarea) { |
| 464 | dev_err(&pdev->dev, "mmio area busy\n"); |
| 465 | ret = -EBUSY; |
| 466 | goto out_fb; |
| 467 | } |
| 468 | |
axel lin | e0998ea | 2011-01-29 09:35:45 +0000 | [diff] [blame] | 469 | par->base = ioremap_nocache(res->start, resource_size(res)); |
Nobuhiro Iwamatsu | 4a25e41 | 2008-07-23 21:31:46 -0700 | [diff] [blame] | 470 | if (!par->base) { |
| 471 | dev_err(&pdev->dev, "cannot remap\n"); |
| 472 | ret = -ENODEV; |
| 473 | goto out_res; |
| 474 | } |
| 475 | |
| 476 | iowrite16(0, par->base + LDINTR); /* disable vsync irq */ |
| 477 | par->irq = platform_get_irq(pdev, 0); |
| 478 | if (par->irq >= 0) { |
| 479 | ret = request_irq(par->irq, sh7760fb_irq, 0, |
| 480 | "sh7760-lcdc", &par->vsync); |
| 481 | if (ret) { |
| 482 | dev_err(&pdev->dev, "cannot grab IRQ\n"); |
| 483 | par->irq = -ENXIO; |
| 484 | } else |
| 485 | disable_irq_nosync(par->irq); |
| 486 | } |
| 487 | |
| 488 | fb_videomode_to_var(&info->var, par->pd->def_mode); |
| 489 | |
| 490 | ret = sh7760fb_alloc_mem(info); |
| 491 | if (ret) { |
| 492 | dev_dbg(info->dev, "framebuffer memory allocation failed!\n"); |
| 493 | goto out_unmap; |
| 494 | } |
| 495 | |
| 496 | info->pseudo_palette = par->pseudo_palette; |
| 497 | |
| 498 | /* fixup color register bitpositions. These are fixed by hardware */ |
| 499 | info->var.red.offset = 11; |
| 500 | info->var.red.length = 5; |
| 501 | info->var.red.msb_right = 0; |
| 502 | |
| 503 | info->var.green.offset = 5; |
| 504 | info->var.green.length = 6; |
| 505 | info->var.green.msb_right = 0; |
| 506 | |
| 507 | info->var.blue.offset = 0; |
| 508 | info->var.blue.length = 5; |
| 509 | info->var.blue.msb_right = 0; |
| 510 | |
| 511 | info->var.transp.offset = 0; |
| 512 | info->var.transp.length = 0; |
| 513 | info->var.transp.msb_right = 0; |
| 514 | |
Krzysztof Helt | 537a1bf | 2009-06-30 11:41:29 -0700 | [diff] [blame] | 515 | strcpy(info->fix.id, "sh7760-lcdc"); |
| 516 | |
Nobuhiro Iwamatsu | 4a25e41 | 2008-07-23 21:31:46 -0700 | [diff] [blame] | 517 | /* set the DON2 bit now, before cmap allocation, as it will randomize |
| 518 | * palette memory. |
| 519 | */ |
| 520 | iowrite16(LDCNTR_DON2, par->base + LDCNTR); |
| 521 | info->fbops = &sh7760fb_ops; |
| 522 | |
| 523 | ret = fb_alloc_cmap(&info->cmap, 256, 0); |
| 524 | if (ret) { |
| 525 | dev_dbg(info->dev, "Unable to allocate cmap memory\n"); |
| 526 | goto out_mem; |
| 527 | } |
| 528 | |
| 529 | ret = register_framebuffer(info); |
| 530 | if (ret < 0) { |
| 531 | dev_dbg(info->dev, "cannot register fb!\n"); |
| 532 | goto out_cmap; |
| 533 | } |
| 534 | platform_set_drvdata(pdev, info); |
| 535 | |
| 536 | printk(KERN_INFO "%s: memory at phys 0x%08lx-0x%08lx, size %ld KiB\n", |
| 537 | pdev->name, |
| 538 | (unsigned long)par->fbdma, |
| 539 | (unsigned long)(par->fbdma + info->screen_size - 1), |
| 540 | info->screen_size >> 10); |
| 541 | |
| 542 | return 0; |
| 543 | |
| 544 | out_cmap: |
| 545 | sh7760fb_blank(FB_BLANK_POWERDOWN, info); |
| 546 | fb_dealloc_cmap(&info->cmap); |
| 547 | out_mem: |
| 548 | sh7760fb_free_mem(info); |
| 549 | out_unmap: |
| 550 | if (par->irq >= 0) |
| 551 | free_irq(par->irq, &par->vsync); |
| 552 | iounmap(par->base); |
| 553 | out_res: |
Julia Lawall | 683e7cd | 2011-04-22 20:11:21 +0000 | [diff] [blame^] | 554 | release_mem_region(res->start, resource_size(res)); |
Nobuhiro Iwamatsu | 4a25e41 | 2008-07-23 21:31:46 -0700 | [diff] [blame] | 555 | out_fb: |
| 556 | framebuffer_release(info); |
| 557 | return ret; |
| 558 | } |
| 559 | |
| 560 | static int __devexit sh7760fb_remove(struct platform_device *dev) |
| 561 | { |
| 562 | struct fb_info *info = platform_get_drvdata(dev); |
| 563 | struct sh7760fb_par *par = info->par; |
| 564 | |
| 565 | sh7760fb_blank(FB_BLANK_POWERDOWN, info); |
| 566 | unregister_framebuffer(info); |
| 567 | fb_dealloc_cmap(&info->cmap); |
| 568 | sh7760fb_free_mem(info); |
| 569 | if (par->irq >= 0) |
| 570 | free_irq(par->irq, par); |
| 571 | iounmap(par->base); |
Julia Lawall | 683e7cd | 2011-04-22 20:11:21 +0000 | [diff] [blame^] | 572 | release_mem_region(par->ioarea->start, resource_size(par->ioarea)); |
Nobuhiro Iwamatsu | 4a25e41 | 2008-07-23 21:31:46 -0700 | [diff] [blame] | 573 | framebuffer_release(info); |
| 574 | platform_set_drvdata(dev, NULL); |
| 575 | |
| 576 | return 0; |
| 577 | } |
| 578 | |
| 579 | static struct platform_driver sh7760_lcdc_driver = { |
| 580 | .driver = { |
| 581 | .name = "sh7760-lcdc", |
| 582 | .owner = THIS_MODULE, |
| 583 | }, |
| 584 | .probe = sh7760fb_probe, |
| 585 | .remove = __devexit_p(sh7760fb_remove), |
| 586 | }; |
| 587 | |
| 588 | static int __init sh7760fb_init(void) |
| 589 | { |
| 590 | return platform_driver_register(&sh7760_lcdc_driver); |
| 591 | } |
| 592 | |
| 593 | static void __exit sh7760fb_exit(void) |
| 594 | { |
| 595 | platform_driver_unregister(&sh7760_lcdc_driver); |
| 596 | } |
| 597 | |
| 598 | module_init(sh7760fb_init); |
| 599 | module_exit(sh7760fb_exit); |
| 600 | |
| 601 | MODULE_AUTHOR("Nobuhiro Iwamatsu, Manuel Lauss"); |
| 602 | MODULE_DESCRIPTION("FBdev for SH7760/63 integrated LCD Controller"); |
| 603 | MODULE_LICENSE("GPL"); |