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>
35 struct fb_var_screeninfo {
36 unsigned int xres; /* visible resolution */
39 unsigned int bits_per_pixel; /* guess what */
41 /* Timing: All values in pixclocks, except pixclock (of course) */
42 unsigned int pixclock; /* pixel clock in ps (pico seconds) */
43 unsigned int left_margin; /* time from sync to picture */
44 unsigned int right_margin; /* time from picture to sync */
45 unsigned int upper_margin; /* time from sync to picture */
46 unsigned int lower_margin;
47 unsigned int hsync_len; /* length of horizontal sync */
48 unsigned int vsync_len; /* length of vertical sync */
49 unsigned int sync; /* see FB_SYNC_* */
50 unsigned int vmode; /* see FB_VMODE_* */
51 unsigned int rotate; /* angle we rotate counter clockwise */
55 struct fb_var_screeninfo var; /* Current var */
56 unsigned int smem_len; /* Length of frame buffer mem */
57 unsigned int type; /* see FB_TYPE_* */
58 unsigned int line_length; /* length of a line in bytes */
61 unsigned long screen_size;
65 const char *name; /* optional */
66 unsigned int refresh; /* optional */
69 unsigned int pixclock;
70 unsigned int left_margin;
71 unsigned int right_margin;
72 unsigned int upper_margin;
73 unsigned int lower_margin;
74 unsigned int hsync_len;
75 unsigned int vsync_len;
81 #define FB_SYNC_VERT_HIGH_ACT 2 /* vertical sync high active */
82 #define FB_SYNC_COMP_HIGH_ACT 8 /* composite sync high active */
83 #define FB_VMODE_NONINTERLACED 0 /* non interlaced */
85 /* This setting is used for the ifm pdm360ng with PRIMEVIEW PM070WL3 */
86 static struct fb_videomode fsl_diu_mode_800 = {
99 .vmode = FB_VMODE_NONINTERLACED
103 * These parameters give default parameters
104 * for video output 1024x768,
105 * FIXME - change timing to proper amounts
106 * hsync 31.5kHz, vsync 60Hz
108 static struct fb_videomode fsl_diu_mode_1024 = {
109 .name = "1024x768-60",
120 .sync = FB_SYNC_COMP_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
121 .vmode = FB_VMODE_NONINTERLACED
124 static struct fb_videomode fsl_diu_mode_1280 = {
125 .name = "1280x1024-60",
136 .sync = FB_SYNC_COMP_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
137 .vmode = FB_VMODE_NONINTERLACED
141 * These are the fields of area descriptor(in DDR memory) for every plane
144 /* Word 0(32-bit) in DDR memory */
145 __le32 pix_fmt; /* hard coding pixel format */
146 /* Word 1(32-bit) in DDR memory */
148 /* Word 2(32-bit) in DDR memory */
149 __le32 src_size_g_alpha;
150 /* Word 3(32-bit) in DDR memory */
152 /* Word 4(32-bit) in DDR memory */
154 /* Word 5(32-bit) in DDR memory */
156 /* Word 6(32-bit) in DDR memory */
161 /* Word 7(32-bit) in DDR memory */
166 /* Word 8(32-bit) in DDR memory */
168 /* Word 9(32-bit) in DDR memory, just for 64-bit aligned */
170 } __attribute__ ((packed));
196 } __attribute__ ((packed));
199 void *vaddr; /* Virtual address */
200 u32 paddr; /* 32-bit physical address */
201 unsigned int offset; /* Alignment offset */
204 static struct fb_info info;
207 * Align to 64-bit(8-byte), 32-byte, etc.
209 static int allocate_buf(struct diu_addr *buf, u32 size, u32 bytes_align)
214 ssize = size + bytes_align;
215 buf->vaddr = malloc(ssize);
219 memset(buf->vaddr, 0, ssize);
220 mask = bytes_align - 1;
221 offset = (u32)buf->vaddr & mask;
223 buf->offset = bytes_align - offset;
224 buf->vaddr += offset;
228 buf->paddr = virt_to_phys(buf->vaddr);
233 * Allocate a framebuffer and an Area Descriptor that points to it. Both
234 * are created in the same memory block. The Area Descriptor is updated to
235 * point to the framebuffer memory. Memory is aligned as needed.
237 static struct diu_ad *allocate_fb(unsigned int xres, unsigned int yres,
238 unsigned int depth, void **fb)
240 unsigned long size = xres * yres * depth;
241 struct diu_addr addr;
243 size_t ad_size = roundup(sizeof(struct diu_ad), 32);
246 * Allocate a memory block that holds the Area Descriptor and the
247 * frame buffer right behind it. To keep the code simple, everything
248 * is aligned on a 32-byte address.
250 if (allocate_buf(&addr, ad_size + size, 32) < 0)
254 ad->addr = cpu_to_le32(addr.paddr + ad_size);
255 ad->aoi_size = cpu_to_le32((yres << 16) | xres);
256 ad->src_size_g_alpha = cpu_to_le32((yres << 12) | xres);
261 *fb = addr.vaddr + ad_size;
266 int fsl_diu_init(int xres, u32 pixel_format, int gamma_fix)
268 struct fb_videomode *fsl_diu_mode_db;
270 struct diu *hw = (struct diu *)CONFIG_SYS_DIU_ADDR;
271 u8 *gamma_table_base;
273 struct diu_ad *dummy_ad;
274 struct diu_addr gamma;
275 struct diu_addr cursor;
279 fsl_diu_mode_db = &fsl_diu_mode_800;
282 fsl_diu_mode_db = &fsl_diu_mode_1280;
285 fsl_diu_mode_db = &fsl_diu_mode_1024;
288 /* The AD struct for the dummy framebuffer and the FB itself */
289 dummy_ad = allocate_fb(2, 4, 4, NULL);
291 printf("DIU: Out of memory\n");
294 dummy_ad->pix_fmt = 0x88883316;
297 info.var.xres = fsl_diu_mode_db->xres;
298 info.var.yres = fsl_diu_mode_db->yres;
299 info.var.bits_per_pixel = 32;
300 info.var.pixclock = fsl_diu_mode_db->pixclock;
301 info.var.left_margin = fsl_diu_mode_db->left_margin;
302 info.var.right_margin = fsl_diu_mode_db->right_margin;
303 info.var.upper_margin = fsl_diu_mode_db->upper_margin;
304 info.var.lower_margin = fsl_diu_mode_db->lower_margin;
305 info.var.hsync_len = fsl_diu_mode_db->hsync_len;
306 info.var.vsync_len = fsl_diu_mode_db->vsync_len;
307 info.var.sync = fsl_diu_mode_db->sync;
308 info.var.vmode = fsl_diu_mode_db->vmode;
309 info.line_length = info.var.xres * info.var.bits_per_pixel / 8;
311 /* Memory allocation for framebuffer */
313 info.var.xres * info.var.yres * (info.var.bits_per_pixel / 8);
314 ad = allocate_fb(info.var.xres, info.var.yres,
315 info.var.bits_per_pixel / 8, &info.screen_base);
317 printf("DIU: Out of memory\n");
321 ad->pix_fmt = pixel_format;
323 /* Disable chroma keying function */
332 /* Initialize the gamma table */
333 if (allocate_buf(&gamma, 256 * 3, 32) < 0) {
334 printf("DIU: Out of memory\n");
337 gamma_table_base = gamma.vaddr;
338 for (i = 0; i <= 2; i++)
339 for (j = 0; j < 256; j++)
340 *gamma_table_base++ = j;
342 if (gamma_fix == 1) { /* fix the gamma */
343 gamma_table_base = gamma.vaddr;
344 for (i = 0; i < 256 * 3; i++) {
345 gamma_table_base[i] = (gamma_table_base[i] << 2)
346 | ((gamma_table_base[i] >> 6) & 0x03);
350 /* Initialize the cursor */
351 if (allocate_buf(&cursor, 32 * 32 * 2, 32) < 0) {
352 printf("DIU: Can't alloc cursor data\n");
356 /* Program DIU registers */
357 out_be32(&hw->diu_mode, 0); /* Temporarily disable the DIU */
359 out_be32(&hw->gamma, gamma.paddr);
360 out_be32(&hw->cursor, cursor.paddr);
361 out_be32(&hw->bgnd, 0x007F7F7F);
362 out_be32(&hw->bgnd_wb, 0);
363 out_be32(&hw->disp_size, info.var.yres << 16 | info.var.xres);
364 out_be32(&hw->wb_size, 0);
365 out_be32(&hw->wb_mem_addr, 0);
366 out_be32(&hw->hsyn_para, info.var.left_margin << 22 |
367 info.var.hsync_len << 11 |
368 info.var.right_margin);
370 out_be32(&hw->vsyn_para, info.var.upper_margin << 22 |
371 info.var.vsync_len << 11 |
372 info.var.lower_margin);
374 out_be32(&hw->syn_pol, 0);
375 out_be32(&hw->thresholds, 0x00037800);
376 out_be32(&hw->int_status, 0);
377 out_be32(&hw->int_mask, 0);
378 out_be32(&hw->plut, 0x01F5F666);
379 /* Pixel Clock configuration */
380 diu_set_pixel_clock(info.var.pixclock);
382 /* Set the frame buffers */
383 out_be32(&hw->desc[0], virt_to_phys(ad));
384 out_be32(&hw->desc[1], virt_to_phys(dummy_ad));
385 out_be32(&hw->desc[2], virt_to_phys(dummy_ad));
387 /* Enable the DIU, set display to all three planes */
388 out_be32(&hw->diu_mode, 1);
393 void *video_hw_init(void)
395 static GraphicDevice ctfb;
397 unsigned int depth = 0, freq = 0;
399 if (!video_get_video_mode(&ctfb.winSizeX, &ctfb.winSizeY, &depth, &freq,
403 /* Find the monitor port, which is a required option */
406 if (strncmp(options, "monitor=", 8) != 0)
409 if (platform_diu_init(ctfb.winSizeX, ctfb.winSizeY, options + 8) < 0)
412 /* fill in Graphic device struct */
413 sprintf(ctfb.modeIdent, "%ix%ix%i %ikHz %iHz",
414 ctfb.winSizeX, ctfb.winSizeY, depth, 64, freq);
416 ctfb.frameAdrs = (unsigned int)info.screen_base;
417 ctfb.plnSizeX = ctfb.winSizeX;
418 ctfb.plnSizeY = ctfb.winSizeY;
421 ctfb.gdfIndex = GDF_32BIT_X888RGB;
425 ctfb.memSize = info.screen_size;
427 /* Cursor Start Address */