diff options
Diffstat (limited to 'drivers')
-rw-r--r-- | drivers/video/Kconfig | 13 | ||||
-rw-r--r-- | drivers/video/Makefile | 1 | ||||
-rw-r--r-- | drivers/video/sh7760fb.c | 658 |
3 files changed, 672 insertions, 0 deletions
diff --git a/drivers/video/Kconfig b/drivers/video/Kconfig index c1b7db843411..70d135e0cc47 100644 --- a/drivers/video/Kconfig +++ b/drivers/video/Kconfig | |||
@@ -1991,6 +1991,19 @@ config FB_COBALT | |||
1991 | tristate "Cobalt server LCD frame buffer support" | 1991 | tristate "Cobalt server LCD frame buffer support" |
1992 | depends on FB && MIPS_COBALT | 1992 | depends on FB && MIPS_COBALT |
1993 | 1993 | ||
1994 | config FB_SH7760 | ||
1995 | bool "SH7760/SH7763 LCDC support" | ||
1996 | depends on FB && (CPU_SUBTYPE_SH7760 || CPU_SUBTYPE_SH7763) | ||
1997 | select FB_CFB_FILLRECT | ||
1998 | select FB_CFB_COPYAREA | ||
1999 | select FB_CFB_IMAGEBLIT | ||
2000 | help | ||
2001 | Support for the SH7760/SH7763 integrated (D)STN/TFT LCD Controller. | ||
2002 | Supports display resolutions up to 1024x1024 pixel, grayscale and | ||
2003 | color operation, with depths ranging from 1 bpp to 8 bpp monochrome | ||
2004 | and 8, 15 or 16 bpp color; 90 degrees clockwise display rotation for | ||
2005 | panels <= 320 pixel horizontal resolution. | ||
2006 | |||
1994 | config FB_VIRTUAL | 2007 | config FB_VIRTUAL |
1995 | tristate "Virtual Frame Buffer support (ONLY FOR TESTING!)" | 2008 | tristate "Virtual Frame Buffer support (ONLY FOR TESTING!)" |
1996 | depends on FB | 2009 | depends on FB |
diff --git a/drivers/video/Makefile b/drivers/video/Makefile index 358032597757..0ebc1bfd2514 100644 --- a/drivers/video/Makefile +++ b/drivers/video/Makefile | |||
@@ -106,6 +106,7 @@ obj-$(CONFIG_FB_PMAGB_B) += pmagb-b-fb.o | |||
106 | obj-$(CONFIG_FB_MAXINE) += maxinefb.o | 106 | obj-$(CONFIG_FB_MAXINE) += maxinefb.o |
107 | obj-$(CONFIG_FB_METRONOME) += metronomefb.o | 107 | obj-$(CONFIG_FB_METRONOME) += metronomefb.o |
108 | obj-$(CONFIG_FB_S1D13XXX) += s1d13xxxfb.o | 108 | obj-$(CONFIG_FB_S1D13XXX) += s1d13xxxfb.o |
109 | obj-$(CONFIG_FB_SH7760) += sh7760fb.o | ||
109 | obj-$(CONFIG_FB_IMX) += imxfb.o | 110 | obj-$(CONFIG_FB_IMX) += imxfb.o |
110 | obj-$(CONFIG_FB_S3C2410) += s3c2410fb.o | 111 | obj-$(CONFIG_FB_S3C2410) += s3c2410fb.o |
111 | obj-$(CONFIG_FB_FSL_DIU) += fsl-diu-fb.o | 112 | obj-$(CONFIG_FB_FSL_DIU) += fsl-diu-fb.o |
diff --git a/drivers/video/sh7760fb.c b/drivers/video/sh7760fb.c new file mode 100644 index 000000000000..4d0e28c5790b --- /dev/null +++ b/drivers/video/sh7760fb.c | |||
@@ -0,0 +1,658 @@ | |||
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! | ||
16 | */ | ||
17 | |||
18 | #include <linux/completion.h> | ||
19 | #include <linux/delay.h> | ||
20 | #include <linux/dma-mapping.h> | ||
21 | #include <linux/fb.h> | ||
22 | #include <linux/interrupt.h> | ||
23 | #include <linux/io.h> | ||
24 | #include <linux/kernel.h> | ||
25 | #include <linux/module.h> | ||
26 | #include <linux/platform_device.h> | ||
27 | |||
28 | #include <asm/sh7760fb.h> | ||
29 | |||
30 | struct sh7760fb_par { | ||
31 | void __iomem *base; | ||
32 | int irq; | ||
33 | |||
34 | struct sh7760fb_platdata *pd; /* display information */ | ||
35 | |||
36 | dma_addr_t fbdma; /* physical address */ | ||
37 | |||
38 | int rot; /* rotation enabled? */ | ||
39 | |||
40 | u32 pseudo_palette[16]; | ||
41 | |||
42 | struct platform_device *dev; | ||
43 | struct resource *ioarea; | ||
44 | struct completion vsync; /* vsync irq event */ | ||
45 | }; | ||
46 | |||
47 | static irqreturn_t sh7760fb_irq(int irq, void *data) | ||
48 | { | ||
49 | struct completion *c = data; | ||
50 | |||
51 | complete(c); | ||
52 | |||
53 | return IRQ_HANDLED; | ||
54 | } | ||
55 | |||
56 | static void sh7760fb_wait_vsync(struct fb_info *info) | ||
57 | { | ||
58 | struct sh7760fb_par *par = info->par; | ||
59 | |||
60 | if (par->pd->novsync) | ||
61 | return; | ||
62 | |||
63 | iowrite16(ioread16(par->base + LDINTR) & ~VINT_CHECK, | ||
64 | par->base + LDINTR); | ||
65 | |||
66 | if (par->irq < 0) { | ||
67 | /* poll for vert. retrace: status bit is sticky */ | ||
68 | while (!(ioread16(par->base + LDINTR) & VINT_CHECK)) | ||
69 | cpu_relax(); | ||
70 | } else { | ||
71 | /* a "wait_for_irq_event(par->irq)" would be extremely nice */ | ||
72 | init_completion(&par->vsync); | ||
73 | enable_irq(par->irq); | ||
74 | wait_for_completion(&par->vsync); | ||
75 | disable_irq_nosync(par->irq); | ||
76 | } | ||
77 | } | ||
78 | |||
79 | /* wait_for_lps - wait until power supply has reached a certain state. */ | ||
80 | static int wait_for_lps(struct sh7760fb_par *par, int val) | ||
81 | { | ||
82 | int i = 100; | ||
83 | while (--i && ((ioread16(par->base + LDPMMR) & 3) != val)) | ||
84 | msleep(1); | ||
85 | |||
86 | if (i <= 0) | ||
87 | return -ETIMEDOUT; | ||
88 | |||
89 | return 0; | ||
90 | } | ||
91 | |||
92 | /* en/disable the LCDC */ | ||
93 | static int sh7760fb_blank(int blank, struct fb_info *info) | ||
94 | { | ||
95 | struct sh7760fb_par *par = info->par; | ||
96 | struct sh7760fb_platdata *pd = par->pd; | ||
97 | unsigned short cntr = ioread16(par->base + LDCNTR); | ||
98 | unsigned short intr = ioread16(par->base + LDINTR); | ||
99 | int lps; | ||
100 | |||
101 | if (blank == FB_BLANK_UNBLANK) { | ||
102 | intr |= VINT_START; | ||
103 | cntr = LDCNTR_DON2 | LDCNTR_DON; | ||
104 | lps = 3; | ||
105 | } else { | ||
106 | intr &= ~VINT_START; | ||
107 | cntr = LDCNTR_DON2; | ||
108 | lps = 0; | ||
109 | } | ||
110 | |||
111 | if (pd->blank) | ||
112 | pd->blank(blank); | ||
113 | |||
114 | iowrite16(intr, par->base + LDINTR); | ||
115 | iowrite16(cntr, par->base + LDCNTR); | ||
116 | |||
117 | return wait_for_lps(par, lps); | ||
118 | } | ||
119 | |||
120 | /* set color registers */ | ||
121 | static int sh7760fb_setcmap(struct fb_cmap *cmap, struct fb_info *info) | ||
122 | { | ||
123 | struct sh7760fb_par *par = info->par; | ||
124 | u32 s = cmap->start; | ||
125 | u32 l = cmap->len; | ||
126 | u16 *r = cmap->red; | ||
127 | u16 *g = cmap->green; | ||
128 | u16 *b = cmap->blue; | ||
129 | u32 col, tmo; | ||
130 | int ret; | ||
131 | |||
132 | ret = 0; | ||
133 | |||
134 | sh7760fb_wait_vsync(info); | ||
135 | |||
136 | /* request palette access */ | ||
137 | iowrite16(LDPALCR_PALEN, par->base + LDPALCR); | ||
138 | |||
139 | /* poll for access grant */ | ||
140 | tmo = 100; | ||
141 | while (!(ioread16(par->base + LDPALCR) & LDPALCR_PALS) && (--tmo)) | ||
142 | cpu_relax(); | ||
143 | |||
144 | if (!tmo) { | ||
145 | ret = 1; | ||
146 | dev_dbg(info->dev, "no palette access!\n"); | ||
147 | goto out; | ||
148 | } | ||
149 | |||
150 | while (l && (s < 256)) { | ||
151 | col = ((*r) & 0xff) << 16; | ||
152 | col |= ((*g) & 0xff) << 8; | ||
153 | col |= ((*b) & 0xff); | ||
154 | col &= SH7760FB_PALETTE_MASK; | ||
155 | |||
156 | if (s < 16) | ||
157 | ((u32 *) (info->pseudo_palette))[s] = s; | ||
158 | |||
159 | s++; | ||
160 | l--; | ||
161 | r++; | ||
162 | g++; | ||
163 | b++; | ||
164 | } | ||
165 | out: | ||
166 | iowrite16(0, par->base + LDPALCR); | ||
167 | return ret; | ||
168 | } | ||
169 | |||
170 | static void encode_fix(struct fb_fix_screeninfo *fix, struct fb_info *info, | ||
171 | unsigned long stride) | ||
172 | { | ||
173 | memset(fix, 0, sizeof(struct fb_fix_screeninfo)); | ||
174 | strcpy(fix->id, "sh7760-lcdc"); | ||
175 | |||
176 | fix->smem_start = (unsigned long)info->screen_base; | ||
177 | fix->smem_len = info->screen_size; | ||
178 | |||
179 | fix->line_length = stride; | ||
180 | } | ||
181 | |||
182 | static int sh7760fb_get_color_info(struct device *dev, | ||
183 | u16 lddfr, int *bpp, int *gray) | ||
184 | { | ||
185 | int lbpp, lgray; | ||
186 | |||
187 | lgray = lbpp = 0; | ||
188 | |||
189 | switch (lddfr & LDDFR_COLOR_MASK) { | ||
190 | case LDDFR_1BPP_MONO: | ||
191 | lgray = 1; | ||
192 | lbpp = 1; | ||
193 | break; | ||
194 | case LDDFR_2BPP_MONO: | ||
195 | lgray = 1; | ||
196 | lbpp = 2; | ||
197 | break; | ||
198 | case LDDFR_4BPP_MONO: | ||
199 | lgray = 1; | ||
200 | case LDDFR_4BPP: | ||
201 | lbpp = 4; | ||
202 | break; | ||
203 | case LDDFR_6BPP_MONO: | ||
204 | lgray = 1; | ||
205 | case LDDFR_8BPP: | ||
206 | lbpp = 8; | ||
207 | break; | ||
208 | case LDDFR_16BPP_RGB555: | ||
209 | case LDDFR_16BPP_RGB565: | ||
210 | lbpp = 16; | ||
211 | lgray = 0; | ||
212 | break; | ||
213 | default: | ||
214 | dev_dbg(dev, "unsupported LDDFR bit depth.\n"); | ||
215 | return -EINVAL; | ||
216 | } | ||
217 | |||
218 | if (bpp) | ||
219 | *bpp = lbpp; | ||
220 | if (gray) | ||
221 | *gray = lgray; | ||
222 | |||
223 | return 0; | ||
224 | } | ||
225 | |||
226 | static int sh7760fb_check_var(struct fb_var_screeninfo *var, | ||
227 | struct fb_info *info) | ||
228 | { | ||
229 | struct fb_fix_screeninfo *fix = &info->fix; | ||
230 | struct sh7760fb_par *par = info->par; | ||
231 | int ret, bpp; | ||
232 | |||
233 | /* get color info from register value */ | ||
234 | ret = sh7760fb_get_color_info(info->dev, par->pd->lddfr, &bpp, NULL); | ||
235 | if (ret) | ||
236 | return ret; | ||
237 | |||
238 | var->bits_per_pixel = bpp; | ||
239 | |||
240 | if ((var->grayscale) && (var->bits_per_pixel == 1)) | ||
241 | fix->visual = FB_VISUAL_MONO10; | ||
242 | else if (var->bits_per_pixel >= 15) | ||
243 | fix->visual = FB_VISUAL_TRUECOLOR; | ||
244 | else | ||
245 | fix->visual = FB_VISUAL_PSEUDOCOLOR; | ||
246 | |||
247 | /* TODO: add some more validation here */ | ||
248 | return 0; | ||
249 | } | ||
250 | |||
251 | /* | ||
252 | * sh7760fb_set_par - set videomode. | ||
253 | * | ||
254 | * NOTE: The rotation, grayscale and DSTN codepaths are | ||
255 | * totally untested! | ||
256 | */ | ||
257 | static int sh7760fb_set_par(struct fb_info *info) | ||
258 | { | ||
259 | struct sh7760fb_par *par = info->par; | ||
260 | struct fb_videomode *vm = par->pd->def_mode; | ||
261 | unsigned long sbase, dstn_off, ldsarl, stride; | ||
262 | unsigned short hsynp, hsynw, htcn, hdcn; | ||
263 | unsigned short vsynp, vsynw, vtln, vdln; | ||
264 | unsigned short lddfr, ldmtr; | ||
265 | int ret, bpp, gray; | ||
266 | |||
267 | par->rot = par->pd->rotate; | ||
268 | |||
269 | /* rotate only works with xres <= 320 */ | ||
270 | if (par->rot && (vm->xres > 320)) { | ||
271 | dev_dbg(info->dev, "rotation disabled due to display size\n"); | ||
272 | par->rot = 0; | ||
273 | } | ||
274 | |||
275 | /* calculate LCDC reg vals from display parameters */ | ||
276 | hsynp = vm->right_margin + vm->xres; | ||
277 | hsynw = vm->hsync_len; | ||
278 | htcn = vm->left_margin + hsynp + hsynw; | ||
279 | hdcn = vm->xres; | ||
280 | vsynp = vm->lower_margin + vm->yres; | ||
281 | vsynw = vm->vsync_len; | ||
282 | vtln = vm->upper_margin + vsynp + vsynw; | ||
283 | vdln = vm->yres; | ||
284 | |||
285 | /* get color info from register value */ | ||
286 | ret = sh7760fb_get_color_info(info->dev, par->pd->lddfr, &bpp, &gray); | ||
287 | if (ret) | ||
288 | return ret; | ||
289 | |||
290 | dev_dbg(info->dev, "%dx%d %dbpp %s (orientation %s)\n", hdcn, | ||
291 | vdln, bpp, gray ? "grayscale" : "color", | ||
292 | par->rot ? "rotated" : "normal"); | ||
293 | |||
294 | #ifdef CONFIG_CPU_LITTLE_ENDIAN | ||
295 | lddfr = par->pd->lddfr | (1 << 8); | ||
296 | #else | ||
297 | lddfr = par->pd->lddfr & ~(1 << 8); | ||
298 | #endif | ||
299 | |||
300 | ldmtr = par->pd->ldmtr; | ||
301 | |||
302 | if (!(vm->sync & FB_SYNC_HOR_HIGH_ACT)) | ||
303 | ldmtr |= LDMTR_CL1POL; | ||
304 | if (!(vm->sync & FB_SYNC_VERT_HIGH_ACT)) | ||
305 | ldmtr |= LDMTR_FLMPOL; | ||
306 | |||
307 | /* shut down LCDC before changing display parameters */ | ||
308 | sh7760fb_blank(FB_BLANK_POWERDOWN, info); | ||
309 | |||
310 | iowrite16(par->pd->ldickr, par->base + LDICKR); /* pixclock */ | ||
311 | iowrite16(ldmtr, par->base + LDMTR); /* polarities */ | ||
312 | iowrite16(lddfr, par->base + LDDFR); /* color/depth */ | ||
313 | iowrite16((par->rot ? 1 << 13 : 0), par->base + LDSMR); /* rotate */ | ||
314 | iowrite16(par->pd->ldpmmr, par->base + LDPMMR); /* Power Management */ | ||
315 | iowrite16(par->pd->ldpspr, par->base + LDPSPR); /* Power Supply Ctrl */ | ||
316 | |||
317 | /* display resolution */ | ||
318 | iowrite16(((htcn >> 3) - 1) | (((hdcn >> 3) - 1) << 8), | ||
319 | par->base + LDHCNR); | ||
320 | iowrite16(vdln - 1, par->base + LDVDLNR); | ||
321 | iowrite16(vtln - 1, par->base + LDVTLNR); | ||
322 | /* h/v sync signals */ | ||
323 | iowrite16((vsynp - 1) | ((vsynw - 1) << 12), par->base + LDVSYNR); | ||
324 | iowrite16(((hsynp >> 3) - 1) | (((hsynw >> 3) - 1) << 12), | ||
325 | par->base + LDHSYNR); | ||
326 | /* AC modulation sig */ | ||
327 | iowrite16(par->pd->ldaclnr, par->base + LDACLNR); | ||
328 | |||
329 | stride = (par->rot) ? vtln : hdcn; | ||
330 | if (!gray) | ||
331 | stride *= (bpp + 7) >> 3; | ||
332 | else { | ||
333 | if (bpp == 1) | ||
334 | stride >>= 3; | ||
335 | else if (bpp == 2) | ||
336 | stride >>= 2; | ||
337 | else if (bpp == 4) | ||
338 | stride >>= 1; | ||
339 | /* 6 bpp == 8 bpp */ | ||
340 | } | ||
341 | |||
342 | /* if rotated, stride must be power of 2 */ | ||
343 | if (par->rot) { | ||
344 | unsigned long bit = 1 << 31; | ||
345 | while (bit) { | ||
346 | if (stride & bit) | ||
347 | break; | ||
348 | bit >>= 1; | ||
349 | } | ||
350 | if (stride & ~bit) | ||
351 | stride = bit << 1; /* not P-o-2, round up */ | ||
352 | } | ||
353 | iowrite16(stride, par->base + LDLAOR); | ||
354 | |||
355 | /* set display mem start address */ | ||
356 | sbase = (unsigned long)par->fbdma; | ||
357 | if (par->rot) | ||
358 | sbase += (hdcn - 1) * stride; | ||
359 | |||
360 | iowrite32(sbase, par->base + LDSARU); | ||
361 | |||
362 | /* | ||
363 | * for DSTN need to set address for lower half. | ||
364 | * I (mlau) don't know which address to set it to, | ||
365 | * so I guessed at (stride * yres/2). | ||
366 | */ | ||
367 | if (((ldmtr & 0x003f) >= LDMTR_DSTN_MONO_8) && | ||
368 | ((ldmtr & 0x003f) <= LDMTR_DSTN_COLOR_16)) { | ||
369 | |||
370 | dev_dbg(info->dev, " ***** DSTN untested! *****\n"); | ||
371 | |||
372 | dstn_off = stride; | ||
373 | if (par->rot) | ||
374 | dstn_off *= hdcn >> 1; | ||
375 | else | ||
376 | dstn_off *= vdln >> 1; | ||
377 | |||
378 | ldsarl = sbase + dstn_off; | ||
379 | } else | ||
380 | ldsarl = 0; | ||
381 | |||
382 | iowrite32(ldsarl, par->base + LDSARL); /* mem for lower half of DSTN */ | ||
383 | |||
384 | encode_fix(&info->fix, info, stride); | ||
385 | sh7760fb_check_var(&info->var, info); | ||
386 | |||
387 | sh7760fb_blank(FB_BLANK_UNBLANK, info); /* panel on! */ | ||
388 | |||
389 | dev_dbg(info->dev, "hdcn : %6d htcn : %6d\n", hdcn, htcn); | ||
390 | dev_dbg(info->dev, "hsynw : %6d hsynp : %6d\n", hsynw, hsynp); | ||
391 | dev_dbg(info->dev, "vdln : %6d vtln : %6d\n", vdln, vtln); | ||
392 | dev_dbg(info->dev, "vsynw : %6d vsynp : %6d\n", vsynw, vsynp); | ||
393 | dev_dbg(info->dev, "clksrc: %6d clkdiv: %6d\n", | ||
394 | (par->pd->ldickr >> 12) & 3, par->pd->ldickr & 0x1f); | ||
395 | dev_dbg(info->dev, "ldpmmr: 0x%04x ldpspr: 0x%04x\n", par->pd->ldpmmr, | ||
396 | par->pd->ldpspr); | ||
397 | dev_dbg(info->dev, "ldmtr : 0x%04x lddfr : 0x%04x\n", ldmtr, lddfr); | ||
398 | dev_dbg(info->dev, "ldlaor: %ld\n", stride); | ||
399 | dev_dbg(info->dev, "ldsaru: 0x%08lx ldsarl: 0x%08lx\n", sbase, ldsarl); | ||
400 | |||
401 | return 0; | ||
402 | } | ||
403 | |||
404 | static struct fb_ops sh7760fb_ops = { | ||
405 | .owner = THIS_MODULE, | ||
406 | .fb_blank = sh7760fb_blank, | ||
407 | .fb_check_var = sh7760fb_check_var, | ||
408 | .fb_setcmap = sh7760fb_setcmap, | ||
409 | .fb_set_par = sh7760fb_set_par, | ||
410 | .fb_fillrect = cfb_fillrect, | ||
411 | .fb_copyarea = cfb_copyarea, | ||
412 | .fb_imageblit = cfb_imageblit, | ||
413 | }; | ||
414 | |||
415 | static void sh7760fb_free_mem(struct fb_info *info) | ||
416 | { | ||
417 | struct sh7760fb_par *par = info->par; | ||
418 | |||
419 | if (!info->screen_base) | ||
420 | return; | ||
421 | |||
422 | dma_free_coherent(info->dev, info->screen_size, | ||
423 | info->screen_base, par->fbdma); | ||
424 | |||
425 | par->fbdma = 0; | ||
426 | info->screen_base = NULL; | ||
427 | info->screen_size = 0; | ||
428 | } | ||
429 | |||
430 | /* allocate the framebuffer memory. This memory must be in Area3, | ||
431 | * (dictated by the DMA engine) and contiguous, at a 512 byte boundary. | ||
432 | */ | ||
433 | static int sh7760fb_alloc_mem(struct fb_info *info) | ||
434 | { | ||
435 | struct sh7760fb_par *par = info->par; | ||
436 | void *fbmem; | ||
437 | unsigned long vram; | ||
438 | int ret, bpp; | ||
439 | |||
440 | if (info->screen_base) | ||
441 | return 0; | ||
442 | |||
443 | /* get color info from register value */ | ||
444 | ret = sh7760fb_get_color_info(info->dev, par->pd->lddfr, &bpp, NULL); | ||
445 | if (ret) { | ||
446 | printk(KERN_ERR "colinfo\n"); | ||
447 | return ret; | ||
448 | } | ||
449 | |||
450 | /* min VRAM: xres_min = 16, yres_min = 1, bpp = 1: 2byte -> 1 page | ||
451 | max VRAM: xres_max = 1024, yres_max = 1024, bpp = 16: 2MB */ | ||
452 | |||
453 | vram = info->var.xres * info->var.yres; | ||
454 | if (info->var.grayscale) { | ||
455 | if (bpp == 1) | ||
456 | vram >>= 3; | ||
457 | else if (bpp == 2) | ||
458 | vram >>= 2; | ||
459 | else if (bpp == 4) | ||
460 | vram >>= 1; | ||
461 | } else if (bpp > 8) | ||
462 | vram *= 2; | ||
463 | if ((vram < 1) || (vram > 1024 * 2048)) { | ||
464 | dev_dbg(info->dev, "too much VRAM required. Check settings\n"); | ||
465 | return -ENODEV; | ||
466 | } | ||
467 | |||
468 | if (vram < PAGE_SIZE) | ||
469 | vram = PAGE_SIZE; | ||
470 | |||
471 | fbmem = dma_alloc_coherent(info->dev, vram, &par->fbdma, GFP_KERNEL); | ||
472 | |||
473 | if (!fbmem) | ||
474 | return -ENOMEM; | ||
475 | |||
476 | if ((par->fbdma & SH7760FB_DMA_MASK) != SH7760FB_DMA_MASK) { | ||
477 | sh7760fb_free_mem(info); | ||
478 | dev_err(info->dev, "kernel gave me memory at 0x%08lx, which is" | ||
479 | "unusable for the LCDC\n", (unsigned long)par->fbdma); | ||
480 | return -ENOMEM; | ||
481 | } | ||
482 | |||
483 | info->screen_base = fbmem; | ||
484 | info->screen_size = vram; | ||
485 | |||
486 | return 0; | ||
487 | } | ||
488 | |||
489 | static int __devinit sh7760fb_probe(struct platform_device *pdev) | ||
490 | { | ||
491 | struct fb_info *info; | ||
492 | struct resource *res; | ||
493 | struct sh7760fb_par *par; | ||
494 | int ret; | ||
495 | |||
496 | res = platform_get_resource(pdev, IORESOURCE_MEM, 0); | ||
497 | if (unlikely(res == NULL)) { | ||
498 | dev_err(&pdev->dev, "invalid resource\n"); | ||
499 | return -EINVAL; | ||
500 | } | ||
501 | |||
502 | info = framebuffer_alloc(sizeof(struct sh7760fb_par), &pdev->dev); | ||
503 | if (!info) | ||
504 | return -ENOMEM; | ||
505 | |||
506 | par = info->par; | ||
507 | par->dev = pdev; | ||
508 | |||
509 | par->pd = pdev->dev.platform_data; | ||
510 | if (!par->pd) { | ||
511 | dev_dbg(info->dev, "no display setup data!\n"); | ||
512 | ret = -ENODEV; | ||
513 | goto out_fb; | ||
514 | } | ||
515 | |||
516 | par->ioarea = request_mem_region(res->start, | ||
517 | (res->end - res->start), pdev->name); | ||
518 | if (!par->ioarea) { | ||
519 | dev_err(&pdev->dev, "mmio area busy\n"); | ||
520 | ret = -EBUSY; | ||
521 | goto out_fb; | ||
522 | } | ||
523 | |||
524 | par->base = ioremap_nocache(res->start, res->end - res->start + 1); | ||
525 | if (!par->base) { | ||
526 | dev_err(&pdev->dev, "cannot remap\n"); | ||
527 | ret = -ENODEV; | ||
528 | goto out_res; | ||
529 | } | ||
530 | |||
531 | iowrite16(0, par->base + LDINTR); /* disable vsync irq */ | ||
532 | par->irq = platform_get_irq(pdev, 0); | ||
533 | if (par->irq >= 0) { | ||
534 | ret = request_irq(par->irq, sh7760fb_irq, 0, | ||
535 | "sh7760-lcdc", &par->vsync); | ||
536 | if (ret) { | ||
537 | dev_err(&pdev->dev, "cannot grab IRQ\n"); | ||
538 | par->irq = -ENXIO; | ||
539 | } else | ||
540 | disable_irq_nosync(par->irq); | ||
541 | } | ||
542 | |||
543 | fb_videomode_to_var(&info->var, par->pd->def_mode); | ||
544 | |||
545 | ret = sh7760fb_alloc_mem(info); | ||
546 | if (ret) { | ||
547 | dev_dbg(info->dev, "framebuffer memory allocation failed!\n"); | ||
548 | goto out_unmap; | ||
549 | } | ||
550 | |||
551 | info->pseudo_palette = par->pseudo_palette; | ||
552 | |||
553 | /* fixup color register bitpositions. These are fixed by hardware */ | ||
554 | info->var.red.offset = 11; | ||
555 | info->var.red.length = 5; | ||
556 | info->var.red.msb_right = 0; | ||
557 | |||
558 | info->var.green.offset = 5; | ||
559 | info->var.green.length = 6; | ||
560 | info->var.green.msb_right = 0; | ||
561 | |||
562 | info->var.blue.offset = 0; | ||
563 | info->var.blue.length = 5; | ||
564 | info->var.blue.msb_right = 0; | ||
565 | |||
566 | info->var.transp.offset = 0; | ||
567 | info->var.transp.length = 0; | ||
568 | info->var.transp.msb_right = 0; | ||
569 | |||
570 | /* set the DON2 bit now, before cmap allocation, as it will randomize | ||
571 | * palette memory. | ||
572 | */ | ||
573 | iowrite16(LDCNTR_DON2, par->base + LDCNTR); | ||
574 | info->fbops = &sh7760fb_ops; | ||
575 | |||
576 | ret = fb_alloc_cmap(&info->cmap, 256, 0); | ||
577 | if (ret) { | ||
578 | dev_dbg(info->dev, "Unable to allocate cmap memory\n"); | ||
579 | goto out_mem; | ||
580 | } | ||
581 | |||
582 | ret = register_framebuffer(info); | ||
583 | if (ret < 0) { | ||
584 | dev_dbg(info->dev, "cannot register fb!\n"); | ||
585 | goto out_cmap; | ||
586 | } | ||
587 | platform_set_drvdata(pdev, info); | ||
588 | |||
589 | printk(KERN_INFO "%s: memory at phys 0x%08lx-0x%08lx, size %ld KiB\n", | ||
590 | pdev->name, | ||
591 | (unsigned long)par->fbdma, | ||
592 | (unsigned long)(par->fbdma + info->screen_size - 1), | ||
593 | info->screen_size >> 10); | ||
594 | |||
595 | return 0; | ||
596 | |||
597 | out_cmap: | ||
598 | sh7760fb_blank(FB_BLANK_POWERDOWN, info); | ||
599 | fb_dealloc_cmap(&info->cmap); | ||
600 | out_mem: | ||
601 | sh7760fb_free_mem(info); | ||
602 | out_unmap: | ||
603 | if (par->irq >= 0) | ||
604 | free_irq(par->irq, &par->vsync); | ||
605 | iounmap(par->base); | ||
606 | out_res: | ||
607 | release_resource(par->ioarea); | ||
608 | kfree(par->ioarea); | ||
609 | out_fb: | ||
610 | framebuffer_release(info); | ||
611 | return ret; | ||
612 | } | ||
613 | |||
614 | static int __devexit sh7760fb_remove(struct platform_device *dev) | ||
615 | { | ||
616 | struct fb_info *info = platform_get_drvdata(dev); | ||
617 | struct sh7760fb_par *par = info->par; | ||
618 | |||
619 | sh7760fb_blank(FB_BLANK_POWERDOWN, info); | ||
620 | unregister_framebuffer(info); | ||
621 | fb_dealloc_cmap(&info->cmap); | ||
622 | sh7760fb_free_mem(info); | ||
623 | if (par->irq >= 0) | ||
624 | free_irq(par->irq, par); | ||
625 | iounmap(par->base); | ||
626 | release_resource(par->ioarea); | ||
627 | kfree(par->ioarea); | ||
628 | framebuffer_release(info); | ||
629 | platform_set_drvdata(dev, NULL); | ||
630 | |||
631 | return 0; | ||
632 | } | ||
633 | |||
634 | static struct platform_driver sh7760_lcdc_driver = { | ||
635 | .driver = { | ||
636 | .name = "sh7760-lcdc", | ||
637 | .owner = THIS_MODULE, | ||
638 | }, | ||
639 | .probe = sh7760fb_probe, | ||
640 | .remove = __devexit_p(sh7760fb_remove), | ||
641 | }; | ||
642 | |||
643 | static int __init sh7760fb_init(void) | ||
644 | { | ||
645 | return platform_driver_register(&sh7760_lcdc_driver); | ||
646 | } | ||
647 | |||
648 | static void __exit sh7760fb_exit(void) | ||
649 | { | ||
650 | platform_driver_unregister(&sh7760_lcdc_driver); | ||
651 | } | ||
652 | |||
653 | module_init(sh7760fb_init); | ||
654 | module_exit(sh7760fb_exit); | ||
655 | |||
656 | MODULE_AUTHOR("Nobuhiro Iwamatsu, Manuel Lauss"); | ||
657 | MODULE_DESCRIPTION("FBdev for SH7760/63 integrated LCD Controller"); | ||
658 | MODULE_LICENSE("GPL"); | ||