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 * SPDX-License-Identifier: GPL-2.0+
15 #include "videomodes.h"
17 #include <fsl_diu_fb.h>
18 #include <linux/list.h>
21 /* This setting is used for the ifm pdm360ng with PRIMEVIEW PM070WL3 */
22 static struct fb_videomode fsl_diu_mode_800_480 = {
35 .vmode = FB_VMODE_NONINTERLACED
38 /* For the SHARP LQ084S3LG01, used on the P1022DS board */
39 static struct fb_videomode fsl_diu_mode_800_600 = {
51 .sync = FB_SYNC_COMP_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
52 .vmode = FB_VMODE_NONINTERLACED
56 * These parameters give default parameters
57 * for video output 1024x768,
58 * FIXME - change timing to proper amounts
59 * hsync 31.5kHz, vsync 60Hz
61 static struct fb_videomode fsl_diu_mode_1024_768 = {
62 .name = "1024x768-60",
73 .sync = FB_SYNC_COMP_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
74 .vmode = FB_VMODE_NONINTERLACED
77 static struct fb_videomode fsl_diu_mode_1280_1024 = {
78 .name = "1280x1024-60",
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_720 = {
94 .name = "1280x720-60",
105 .sync = FB_SYNC_COMP_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
106 .vmode = FB_VMODE_NONINTERLACED
109 static struct fb_videomode fsl_diu_mode_1920_1080 = {
110 .name = "1920x1080-60",
121 .sync = FB_SYNC_COMP_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
122 .vmode = FB_VMODE_NONINTERLACED
126 * These are the fields of area descriptor(in DDR memory) for every plane
129 /* Word 0(32-bit) in DDR memory */
130 __le32 pix_fmt; /* hard coding pixel format */
131 /* Word 1(32-bit) in DDR memory */
133 /* Word 2(32-bit) in DDR memory */
134 __le32 src_size_g_alpha;
135 /* Word 3(32-bit) in DDR memory */
137 /* Word 4(32-bit) in DDR memory */
139 /* Word 5(32-bit) in DDR memory */
141 /* Word 6(32-bit) in DDR memory */
146 /* Word 7(32-bit) in DDR memory */
151 /* Word 8(32-bit) in DDR memory */
153 /* Word 9(32-bit) in DDR memory, just for 64-bit aligned */
155 } __attribute__ ((packed));
181 } __attribute__ ((packed));
184 void *vaddr; /* Virtual address */
185 u32 paddr; /* 32-bit physical address */
186 unsigned int offset; /* Alignment offset */
189 static struct fb_info info;
192 * Align to 64-bit(8-byte), 32-byte, etc.
194 static int allocate_buf(struct diu_addr *buf, u32 size, u32 bytes_align)
199 ssize = size + bytes_align;
200 buf->vaddr = malloc(ssize);
204 memset(buf->vaddr, 0, ssize);
205 mask = bytes_align - 1;
206 offset = (u32)buf->vaddr & mask;
208 buf->offset = bytes_align - offset;
209 buf->vaddr += offset;
213 buf->paddr = virt_to_phys(buf->vaddr);
218 * Allocate a framebuffer and an Area Descriptor that points to it. Both
219 * are created in the same memory block. The Area Descriptor is updated to
220 * point to the framebuffer memory. Memory is aligned as needed.
222 static struct diu_ad *allocate_fb(unsigned int xres, unsigned int yres,
223 unsigned int depth, char **fb)
225 unsigned long size = xres * yres * depth;
226 struct diu_addr addr;
228 size_t ad_size = roundup(sizeof(struct diu_ad), 32);
231 * Allocate a memory block that holds the Area Descriptor and the
232 * frame buffer right behind it. To keep the code simple, everything
233 * is aligned on a 32-byte address.
235 if (allocate_buf(&addr, ad_size + size, 32) < 0)
239 ad->addr = cpu_to_le32(addr.paddr + ad_size);
240 ad->aoi_size = cpu_to_le32((yres << 16) | xres);
241 ad->src_size_g_alpha = cpu_to_le32((yres << 12) | xres);
246 *fb = addr.vaddr + ad_size;
251 int fsl_diu_init(u16 xres, u16 yres, u32 pixel_format, int gamma_fix)
253 struct fb_videomode *fsl_diu_mode_db;
255 struct diu *hw = (struct diu *)CONFIG_SYS_DIU_ADDR;
256 u8 *gamma_table_base;
258 struct diu_addr gamma;
259 struct diu_addr cursor;
261 /* Convert the X,Y resolution pair into a single number */
262 #define RESOLUTION(x, y) (((u32)(x) << 16) | (y))
264 switch (RESOLUTION(xres, yres)) {
265 case RESOLUTION(800, 480):
266 fsl_diu_mode_db = &fsl_diu_mode_800_480;
268 case RESOLUTION(800, 600):
269 fsl_diu_mode_db = &fsl_diu_mode_800_600;
271 case RESOLUTION(1024, 768):
272 fsl_diu_mode_db = &fsl_diu_mode_1024_768;
274 case RESOLUTION(1280, 1024):
275 fsl_diu_mode_db = &fsl_diu_mode_1280_1024;
277 case RESOLUTION(1280, 720):
278 fsl_diu_mode_db = &fsl_diu_mode_1280_720;
280 case RESOLUTION(1920, 1080):
281 fsl_diu_mode_db = &fsl_diu_mode_1920_1080;
284 printf("DIU: Unsupported resolution %ux%u\n", xres, yres);
289 info.var.xres = fsl_diu_mode_db->xres;
290 info.var.yres = fsl_diu_mode_db->yres;
291 info.var.bits_per_pixel = 32;
292 info.var.pixclock = fsl_diu_mode_db->pixclock;
293 info.var.left_margin = fsl_diu_mode_db->left_margin;
294 info.var.right_margin = fsl_diu_mode_db->right_margin;
295 info.var.upper_margin = fsl_diu_mode_db->upper_margin;
296 info.var.lower_margin = fsl_diu_mode_db->lower_margin;
297 info.var.hsync_len = fsl_diu_mode_db->hsync_len;
298 info.var.vsync_len = fsl_diu_mode_db->vsync_len;
299 info.var.sync = fsl_diu_mode_db->sync;
300 info.var.vmode = fsl_diu_mode_db->vmode;
301 info.fix.line_length = info.var.xres * info.var.bits_per_pixel / 8;
303 /* Memory allocation for framebuffer */
305 info.var.xres * info.var.yres * (info.var.bits_per_pixel / 8);
306 ad = allocate_fb(info.var.xres, info.var.yres,
307 info.var.bits_per_pixel / 8, &info.screen_base);
309 printf("DIU: Out of memory\n");
313 ad->pix_fmt = pixel_format;
315 /* Disable chroma keying function */
324 /* Initialize the gamma table */
325 if (allocate_buf(&gamma, 256 * 3, 32) < 0) {
326 printf("DIU: Out of memory\n");
329 gamma_table_base = gamma.vaddr;
330 for (i = 0; i <= 2; i++)
331 for (j = 0; j < 256; j++)
332 *gamma_table_base++ = j;
334 if (gamma_fix == 1) { /* fix the gamma */
335 gamma_table_base = gamma.vaddr;
336 for (i = 0; i < 256 * 3; i++) {
337 gamma_table_base[i] = (gamma_table_base[i] << 2)
338 | ((gamma_table_base[i] >> 6) & 0x03);
342 /* Initialize the cursor */
343 if (allocate_buf(&cursor, 32 * 32 * 2, 32) < 0) {
344 printf("DIU: Can't alloc cursor data\n");
348 /* Program DIU registers */
349 out_be32(&hw->diu_mode, 0); /* Temporarily disable the DIU */
351 out_be32(&hw->gamma, gamma.paddr);
352 out_be32(&hw->cursor, cursor.paddr);
353 out_be32(&hw->bgnd, 0x007F7F7F);
354 out_be32(&hw->disp_size, info.var.yres << 16 | info.var.xres);
355 out_be32(&hw->hsyn_para, info.var.left_margin << 22 |
356 info.var.hsync_len << 11 |
357 info.var.right_margin);
359 out_be32(&hw->vsyn_para, info.var.upper_margin << 22 |
360 info.var.vsync_len << 11 |
361 info.var.lower_margin);
363 /* Pixel Clock configuration */
364 diu_set_pixel_clock(info.var.pixclock);
366 /* Set the frame buffers */
367 out_be32(&hw->desc[0], virt_to_phys(ad));
368 out_be32(&hw->desc[1], 0);
369 out_be32(&hw->desc[2], 0);
371 /* Enable the DIU, set display to all three planes */
372 out_be32(&hw->diu_mode, 1);
377 void *video_hw_init(void)
379 static GraphicDevice ctfb;
381 unsigned int depth = 0, freq = 0;
383 if (!video_get_video_mode(&ctfb.winSizeX, &ctfb.winSizeY, &depth, &freq,
387 /* Find the monitor port, which is a required option */
390 if (strncmp(options, "monitor=", 8) != 0)
393 if (platform_diu_init(ctfb.winSizeX, ctfb.winSizeY, options + 8) < 0)
396 /* fill in Graphic device struct */
397 sprintf(ctfb.modeIdent, "%ix%ix%i %ikHz %iHz",
398 ctfb.winSizeX, ctfb.winSizeY, depth, 64, freq);
400 ctfb.frameAdrs = (unsigned int)info.screen_base;
401 ctfb.plnSizeX = ctfb.winSizeX;
402 ctfb.plnSizeY = ctfb.winSizeY;
405 ctfb.gdfIndex = GDF_32BIT_X888RGB;
409 ctfb.memSize = info.screen_size;
411 /* Cursor Start Address */