2 * Copyright 2007, 2010-2011 Freescale Semiconductor, Inc.
3 * Authors: York Sun <yorksun@freescale.com>
4 * Timur Tabi <timur@freescale.com>
6 * FSL DIU Framebuffer driver
8 * See file CREDITS for list of people who contributed to this
11 * This program is free software; you can redistribute it and/or
12 * modify it under the terms of the GNU General Public License as
13 * published by the Free Software Foundation; either version 2 of
14 * the License, or (at your option) any later version.
16 * This program is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 * GNU General Public License for more details.
21 * You should have received a copy of the GNU General Public License
22 * along with this program; if not, write to the Free Software
23 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
31 #include "videomodes.h"
33 #include <fsl_diu_fb.h>
34 #include <linux/list.h>
37 /* This setting is used for the ifm pdm360ng with PRIMEVIEW PM070WL3 */
38 static struct fb_videomode fsl_diu_mode_800_480 = {
51 .vmode = FB_VMODE_NONINTERLACED
54 /* For the SHARP LQ084S3LG01, used on the P1022DS board */
55 static struct fb_videomode fsl_diu_mode_800_600 = {
67 .sync = FB_SYNC_COMP_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
68 .vmode = FB_VMODE_NONINTERLACED
72 * These parameters give default parameters
73 * for video output 1024x768,
74 * FIXME - change timing to proper amounts
75 * hsync 31.5kHz, vsync 60Hz
77 static struct fb_videomode fsl_diu_mode_1024_768 = {
78 .name = "1024x768-60",
89 .sync = FB_SYNC_COMP_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
90 .vmode = FB_VMODE_NONINTERLACED
93 static struct fb_videomode fsl_diu_mode_1280_1024 = {
94 .name = "1280x1024-60",
105 .sync = FB_SYNC_COMP_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
106 .vmode = FB_VMODE_NONINTERLACED
110 * These are the fields of area descriptor(in DDR memory) for every plane
113 /* Word 0(32-bit) in DDR memory */
114 __le32 pix_fmt; /* hard coding pixel format */
115 /* Word 1(32-bit) in DDR memory */
117 /* Word 2(32-bit) in DDR memory */
118 __le32 src_size_g_alpha;
119 /* Word 3(32-bit) in DDR memory */
121 /* Word 4(32-bit) in DDR memory */
123 /* Word 5(32-bit) in DDR memory */
125 /* Word 6(32-bit) in DDR memory */
130 /* Word 7(32-bit) in DDR memory */
135 /* Word 8(32-bit) in DDR memory */
137 /* Word 9(32-bit) in DDR memory, just for 64-bit aligned */
139 } __attribute__ ((packed));
165 } __attribute__ ((packed));
168 void *vaddr; /* Virtual address */
169 u32 paddr; /* 32-bit physical address */
170 unsigned int offset; /* Alignment offset */
173 static struct fb_info info;
176 * Align to 64-bit(8-byte), 32-byte, etc.
178 static int allocate_buf(struct diu_addr *buf, u32 size, u32 bytes_align)
183 ssize = size + bytes_align;
184 buf->vaddr = malloc(ssize);
188 memset(buf->vaddr, 0, ssize);
189 mask = bytes_align - 1;
190 offset = (u32)buf->vaddr & mask;
192 buf->offset = bytes_align - offset;
193 buf->vaddr += offset;
197 buf->paddr = virt_to_phys(buf->vaddr);
202 * Allocate a framebuffer and an Area Descriptor that points to it. Both
203 * are created in the same memory block. The Area Descriptor is updated to
204 * point to the framebuffer memory. Memory is aligned as needed.
206 static struct diu_ad *allocate_fb(unsigned int xres, unsigned int yres,
207 unsigned int depth, char **fb)
209 unsigned long size = xres * yres * depth;
210 struct diu_addr addr;
212 size_t ad_size = roundup(sizeof(struct diu_ad), 32);
215 * Allocate a memory block that holds the Area Descriptor and the
216 * frame buffer right behind it. To keep the code simple, everything
217 * is aligned on a 32-byte address.
219 if (allocate_buf(&addr, ad_size + size, 32) < 0)
223 ad->addr = cpu_to_le32(addr.paddr + ad_size);
224 ad->aoi_size = cpu_to_le32((yres << 16) | xres);
225 ad->src_size_g_alpha = cpu_to_le32((yres << 12) | xres);
230 *fb = addr.vaddr + ad_size;
235 int fsl_diu_init(u16 xres, u16 yres, u32 pixel_format, int gamma_fix)
237 struct fb_videomode *fsl_diu_mode_db;
239 struct diu *hw = (struct diu *)CONFIG_SYS_DIU_ADDR;
240 u8 *gamma_table_base;
242 struct diu_ad *dummy_ad;
243 struct diu_addr gamma;
244 struct diu_addr cursor;
246 /* Convert the X,Y resolution pair into a single number */
247 #define RESOLUTION(x, y) (((u32)(x) << 16) | (y))
249 switch (RESOLUTION(xres, yres)) {
250 case RESOLUTION(800, 480):
251 fsl_diu_mode_db = &fsl_diu_mode_800_480;
253 case RESOLUTION(800, 600):
254 fsl_diu_mode_db = &fsl_diu_mode_800_600;
256 case RESOLUTION(1024, 768):
257 fsl_diu_mode_db = &fsl_diu_mode_1024_768;
259 case RESOLUTION(1280, 1024):
260 fsl_diu_mode_db = &fsl_diu_mode_1280_1024;
263 printf("DIU: Unsupported resolution %ux%u\n", xres, yres);
267 /* The AD struct for the dummy framebuffer and the FB itself */
268 dummy_ad = allocate_fb(2, 4, 4, NULL);
270 printf("DIU: Out of memory\n");
273 dummy_ad->pix_fmt = 0x88883316;
276 info.var.xres = fsl_diu_mode_db->xres;
277 info.var.yres = fsl_diu_mode_db->yres;
278 info.var.bits_per_pixel = 32;
279 info.var.pixclock = fsl_diu_mode_db->pixclock;
280 info.var.left_margin = fsl_diu_mode_db->left_margin;
281 info.var.right_margin = fsl_diu_mode_db->right_margin;
282 info.var.upper_margin = fsl_diu_mode_db->upper_margin;
283 info.var.lower_margin = fsl_diu_mode_db->lower_margin;
284 info.var.hsync_len = fsl_diu_mode_db->hsync_len;
285 info.var.vsync_len = fsl_diu_mode_db->vsync_len;
286 info.var.sync = fsl_diu_mode_db->sync;
287 info.var.vmode = fsl_diu_mode_db->vmode;
288 info.fix.line_length = info.var.xres * info.var.bits_per_pixel / 8;
290 /* Memory allocation for framebuffer */
292 info.var.xres * info.var.yres * (info.var.bits_per_pixel / 8);
293 ad = allocate_fb(info.var.xres, info.var.yres,
294 info.var.bits_per_pixel / 8, &info.screen_base);
296 printf("DIU: Out of memory\n");
300 ad->pix_fmt = pixel_format;
302 /* Disable chroma keying function */
311 /* Initialize the gamma table */
312 if (allocate_buf(&gamma, 256 * 3, 32) < 0) {
313 printf("DIU: Out of memory\n");
316 gamma_table_base = gamma.vaddr;
317 for (i = 0; i <= 2; i++)
318 for (j = 0; j < 256; j++)
319 *gamma_table_base++ = j;
321 if (gamma_fix == 1) { /* fix the gamma */
322 gamma_table_base = gamma.vaddr;
323 for (i = 0; i < 256 * 3; i++) {
324 gamma_table_base[i] = (gamma_table_base[i] << 2)
325 | ((gamma_table_base[i] >> 6) & 0x03);
329 /* Initialize the cursor */
330 if (allocate_buf(&cursor, 32 * 32 * 2, 32) < 0) {
331 printf("DIU: Can't alloc cursor data\n");
335 /* Program DIU registers */
336 out_be32(&hw->diu_mode, 0); /* Temporarily disable the DIU */
338 out_be32(&hw->gamma, gamma.paddr);
339 out_be32(&hw->cursor, cursor.paddr);
340 out_be32(&hw->bgnd, 0x007F7F7F);
341 out_be32(&hw->bgnd_wb, 0);
342 out_be32(&hw->disp_size, info.var.yres << 16 | info.var.xres);
343 out_be32(&hw->wb_size, 0);
344 out_be32(&hw->wb_mem_addr, 0);
345 out_be32(&hw->hsyn_para, info.var.left_margin << 22 |
346 info.var.hsync_len << 11 |
347 info.var.right_margin);
349 out_be32(&hw->vsyn_para, info.var.upper_margin << 22 |
350 info.var.vsync_len << 11 |
351 info.var.lower_margin);
353 out_be32(&hw->syn_pol, 0);
354 out_be32(&hw->thresholds, 0x00037800);
355 out_be32(&hw->int_status, 0);
356 out_be32(&hw->int_mask, 0);
357 out_be32(&hw->plut, 0x01F5F666);
358 /* Pixel Clock configuration */
359 diu_set_pixel_clock(info.var.pixclock);
361 /* Set the frame buffers */
362 out_be32(&hw->desc[0], virt_to_phys(ad));
363 out_be32(&hw->desc[1], virt_to_phys(dummy_ad));
364 out_be32(&hw->desc[2], virt_to_phys(dummy_ad));
366 /* Enable the DIU, set display to all three planes */
367 out_be32(&hw->diu_mode, 1);
372 void *video_hw_init(void)
374 static GraphicDevice ctfb;
376 unsigned int depth = 0, freq = 0;
378 if (!video_get_video_mode(&ctfb.winSizeX, &ctfb.winSizeY, &depth, &freq,
382 /* Find the monitor port, which is a required option */
385 if (strncmp(options, "monitor=", 8) != 0)
388 if (platform_diu_init(ctfb.winSizeX, ctfb.winSizeY, options + 8) < 0)
391 /* fill in Graphic device struct */
392 sprintf(ctfb.modeIdent, "%ix%ix%i %ikHz %iHz",
393 ctfb.winSizeX, ctfb.winSizeY, depth, 64, freq);
395 ctfb.frameAdrs = (unsigned int)info.screen_base;
396 ctfb.plnSizeX = ctfb.winSizeX;
397 ctfb.plnSizeY = ctfb.winSizeY;
400 ctfb.gdfIndex = GDF_32BIT_X888RGB;
404 ctfb.memSize = info.screen_size;
406 /* Cursor Start Address */