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![Timur Tabi](/assets/img/avatar_default.png)
Use the 'video-mode' environment variable (for Freescale chips that have a DIU display controller) to designate the full video configuration. Previously, the DIU driver used the 'monitor' variable, and it was used only to determine the output video port. The old definition of the "monitor" environment variable only determines which video port to use for output. This variable was set to a number (0, 1, or sometimes 2) to specify a DVI, LVDS, or Dual-LVDS port. The resolution was hard-coded into board-specific code. The Linux command-line arguments needed to be hard-coded to the proper video definition string. Signed-off-by: Timur Tabi <timur@freescale.com> Signed-off-by: Anatolij Gustschin <agust@denx.de>
434 lines
11 KiB
C
434 lines
11 KiB
C
/*
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* Copyright 2007, 2010-2011 Freescale Semiconductor, Inc.
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* Authors: York Sun <yorksun@freescale.com>
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* Timur Tabi <timur@freescale.com>
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*
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* FSL DIU Framebuffer driver
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*
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* See file CREDITS for list of people who contributed to this
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* project.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*/
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#include <common.h>
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#include <malloc.h>
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#include <asm/io.h>
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#include "videomodes.h"
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#include <video_fb.h>
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#include <fsl_diu_fb.h>
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struct fb_var_screeninfo {
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unsigned int xres; /* visible resolution */
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unsigned int yres;
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unsigned int bits_per_pixel; /* guess what */
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/* Timing: All values in pixclocks, except pixclock (of course) */
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unsigned int pixclock; /* pixel clock in ps (pico seconds) */
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unsigned int left_margin; /* time from sync to picture */
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unsigned int right_margin; /* time from picture to sync */
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unsigned int upper_margin; /* time from sync to picture */
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unsigned int lower_margin;
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unsigned int hsync_len; /* length of horizontal sync */
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unsigned int vsync_len; /* length of vertical sync */
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unsigned int sync; /* see FB_SYNC_* */
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unsigned int vmode; /* see FB_VMODE_* */
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unsigned int rotate; /* angle we rotate counter clockwise */
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};
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struct fb_info {
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struct fb_var_screeninfo var; /* Current var */
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unsigned int smem_len; /* Length of frame buffer mem */
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unsigned int type; /* see FB_TYPE_* */
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unsigned int line_length; /* length of a line in bytes */
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void *screen_base;
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unsigned long screen_size;
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};
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struct fb_videomode {
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const char *name; /* optional */
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unsigned int refresh; /* optional */
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unsigned int xres;
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unsigned int yres;
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unsigned int pixclock;
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unsigned int left_margin;
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unsigned int right_margin;
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unsigned int upper_margin;
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unsigned int lower_margin;
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unsigned int hsync_len;
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unsigned int vsync_len;
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unsigned int sync;
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unsigned int vmode;
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unsigned int flag;
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};
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#define FB_SYNC_VERT_HIGH_ACT 2 /* vertical sync high active */
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#define FB_SYNC_COMP_HIGH_ACT 8 /* composite sync high active */
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#define FB_VMODE_NONINTERLACED 0 /* non interlaced */
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/* This setting is used for the ifm pdm360ng with PRIMEVIEW PM070WL3 */
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static struct fb_videomode fsl_diu_mode_800 = {
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.name = "800x600-60",
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.refresh = 60,
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.xres = 800,
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.yres = 480,
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.pixclock = 31250,
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.left_margin = 86,
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.right_margin = 42,
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.upper_margin = 33,
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.lower_margin = 10,
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.hsync_len = 128,
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.vsync_len = 2,
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.sync = 0,
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.vmode = FB_VMODE_NONINTERLACED
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};
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/*
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* These parameters give default parameters
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* for video output 1024x768,
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* FIXME - change timing to proper amounts
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* hsync 31.5kHz, vsync 60Hz
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*/
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static struct fb_videomode fsl_diu_mode_1024 = {
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.name = "1024x768-60",
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.refresh = 60,
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.xres = 1024,
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.yres = 768,
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.pixclock = 15385,
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.left_margin = 160,
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.right_margin = 24,
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.upper_margin = 29,
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.lower_margin = 3,
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.hsync_len = 136,
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.vsync_len = 6,
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.sync = FB_SYNC_COMP_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
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.vmode = FB_VMODE_NONINTERLACED
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};
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static struct fb_videomode fsl_diu_mode_1280 = {
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.name = "1280x1024-60",
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.refresh = 60,
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.xres = 1280,
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.yres = 1024,
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.pixclock = 9375,
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.left_margin = 38,
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.right_margin = 128,
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.upper_margin = 2,
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.lower_margin = 7,
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.hsync_len = 216,
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.vsync_len = 37,
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.sync = FB_SYNC_COMP_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
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.vmode = FB_VMODE_NONINTERLACED
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};
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/*
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* These are the fields of area descriptor(in DDR memory) for every plane
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*/
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struct diu_ad {
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/* Word 0(32-bit) in DDR memory */
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__le32 pix_fmt; /* hard coding pixel format */
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/* Word 1(32-bit) in DDR memory */
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__le32 addr;
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/* Word 2(32-bit) in DDR memory */
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__le32 src_size_g_alpha;
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/* Word 3(32-bit) in DDR memory */
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__le32 aoi_size;
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/* Word 4(32-bit) in DDR memory */
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__le32 offset_xyi;
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/* Word 5(32-bit) in DDR memory */
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__le32 offset_xyd;
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/* Word 6(32-bit) in DDR memory */
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__le32 ckmax_r:8;
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__le32 ckmax_g:8;
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__le32 ckmax_b:8;
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__le32 res9:8;
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/* Word 7(32-bit) in DDR memory */
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__le32 ckmin_r:8;
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__le32 ckmin_g:8;
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__le32 ckmin_b:8;
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__le32 res10:8;
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/* Word 8(32-bit) in DDR memory */
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__le32 next_ad;
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/* Word 9(32-bit) in DDR memory, just for 64-bit aligned */
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__le32 res[3];
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} __attribute__ ((packed));
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/*
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* DIU register map
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*/
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struct diu {
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__be32 desc[3];
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__be32 gamma;
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__be32 pallete;
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__be32 cursor;
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__be32 curs_pos;
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__be32 diu_mode;
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__be32 bgnd;
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__be32 bgnd_wb;
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__be32 disp_size;
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__be32 wb_size;
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__be32 wb_mem_addr;
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__be32 hsyn_para;
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__be32 vsyn_para;
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__be32 syn_pol;
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__be32 thresholds;
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__be32 int_status;
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__be32 int_mask;
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__be32 colorbar[8];
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__be32 filling;
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__be32 plut;
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} __attribute__ ((packed));
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struct diu_addr {
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void *vaddr; /* Virtual address */
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u32 paddr; /* 32-bit physical address */
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unsigned int offset; /* Alignment offset */
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};
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static struct fb_info info;
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/*
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* Align to 64-bit(8-byte), 32-byte, etc.
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*/
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static int allocate_buf(struct diu_addr *buf, u32 size, u32 bytes_align)
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{
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u32 offset, ssize;
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u32 mask;
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ssize = size + bytes_align;
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buf->vaddr = malloc(ssize);
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if (!buf->vaddr)
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return -1;
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memset(buf->vaddr, 0, ssize);
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mask = bytes_align - 1;
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offset = (u32)buf->vaddr & mask;
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if (offset) {
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buf->offset = bytes_align - offset;
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buf->vaddr += offset;
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} else
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buf->offset = 0;
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buf->paddr = virt_to_phys(buf->vaddr);
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return 0;
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}
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/*
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* Allocate a framebuffer and an Area Descriptor that points to it. Both
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* are created in the same memory block. The Area Descriptor is updated to
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* point to the framebuffer memory. Memory is aligned as needed.
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*/
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static struct diu_ad *allocate_fb(unsigned int xres, unsigned int yres,
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unsigned int depth, void **fb)
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{
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unsigned long size = xres * yres * depth;
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struct diu_addr addr;
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struct diu_ad *ad;
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size_t ad_size = roundup(sizeof(struct diu_ad), 32);
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/*
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* Allocate a memory block that holds the Area Descriptor and the
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* frame buffer right behind it. To keep the code simple, everything
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* is aligned on a 32-byte address.
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*/
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if (allocate_buf(&addr, ad_size + size, 32) < 0)
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return NULL;
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ad = addr.vaddr;
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ad->addr = cpu_to_le32(addr.paddr + ad_size);
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ad->aoi_size = cpu_to_le32((yres << 16) | xres);
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ad->src_size_g_alpha = cpu_to_le32((yres << 12) | xres);
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ad->offset_xyi = 0;
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ad->offset_xyd = 0;
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if (fb)
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*fb = addr.vaddr + ad_size;
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return ad;
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}
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int fsl_diu_init(int xres, u32 pixel_format, int gamma_fix)
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{
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struct fb_videomode *fsl_diu_mode_db;
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struct diu_ad *ad;
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struct diu *hw = (struct diu *)CONFIG_SYS_DIU_ADDR;
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u8 *gamma_table_base;
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unsigned int i, j;
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struct diu_ad *dummy_ad;
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struct diu_addr gamma;
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struct diu_addr cursor;
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switch (xres) {
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case 800:
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fsl_diu_mode_db = &fsl_diu_mode_800;
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break;
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case 1280:
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fsl_diu_mode_db = &fsl_diu_mode_1280;
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break;
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default:
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fsl_diu_mode_db = &fsl_diu_mode_1024;
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}
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/* The AD struct for the dummy framebuffer and the FB itself */
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dummy_ad = allocate_fb(2, 4, 4, NULL);
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if (!dummy_ad) {
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printf("DIU: Out of memory\n");
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return -1;
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}
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dummy_ad->pix_fmt = 0x88883316;
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/* read mode info */
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info.var.xres = fsl_diu_mode_db->xres;
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info.var.yres = fsl_diu_mode_db->yres;
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info.var.bits_per_pixel = 32;
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info.var.pixclock = fsl_diu_mode_db->pixclock;
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info.var.left_margin = fsl_diu_mode_db->left_margin;
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info.var.right_margin = fsl_diu_mode_db->right_margin;
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info.var.upper_margin = fsl_diu_mode_db->upper_margin;
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info.var.lower_margin = fsl_diu_mode_db->lower_margin;
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info.var.hsync_len = fsl_diu_mode_db->hsync_len;
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info.var.vsync_len = fsl_diu_mode_db->vsync_len;
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info.var.sync = fsl_diu_mode_db->sync;
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info.var.vmode = fsl_diu_mode_db->vmode;
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info.line_length = info.var.xres * info.var.bits_per_pixel / 8;
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/* Memory allocation for framebuffer */
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info.smem_len =
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info.var.xres * info.var.yres * (info.var.bits_per_pixel / 8);
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ad = allocate_fb(info.var.xres, info.var.yres,
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info.var.bits_per_pixel / 8, &info.screen_base);
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if (!ad) {
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printf("DIU: Out of memory\n");
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return -1;
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}
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ad->pix_fmt = pixel_format;
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/* Disable chroma keying function */
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ad->ckmax_r = 0;
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ad->ckmax_g = 0;
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ad->ckmax_b = 0;
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ad->ckmin_r = 255;
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ad->ckmin_g = 255;
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ad->ckmin_b = 255;
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/* Initialize the gamma table */
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if (allocate_buf(&gamma, 256 * 3, 32) < 0) {
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printf("DIU: Out of memory\n");
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return -1;
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}
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gamma_table_base = gamma.vaddr;
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for (i = 0; i <= 2; i++)
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for (j = 0; j < 256; j++)
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*gamma_table_base++ = j;
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if (gamma_fix == 1) { /* fix the gamma */
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gamma_table_base = gamma.vaddr;
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for (i = 0; i < 256 * 3; i++) {
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gamma_table_base[i] = (gamma_table_base[i] << 2)
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| ((gamma_table_base[i] >> 6) & 0x03);
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}
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}
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/* Initialize the cursor */
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if (allocate_buf(&cursor, 32 * 32 * 2, 32) < 0) {
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printf("DIU: Can't alloc cursor data\n");
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return -1;
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}
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/* Program DIU registers */
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out_be32(&hw->diu_mode, 0); /* Temporarily disable the DIU */
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out_be32(&hw->gamma, gamma.paddr);
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out_be32(&hw->cursor, cursor.paddr);
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out_be32(&hw->bgnd, 0x007F7F7F);
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out_be32(&hw->bgnd_wb, 0);
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out_be32(&hw->disp_size, info.var.yres << 16 | info.var.xres);
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out_be32(&hw->wb_size, 0);
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out_be32(&hw->wb_mem_addr, 0);
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out_be32(&hw->hsyn_para, info.var.left_margin << 22 |
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info.var.hsync_len << 11 |
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info.var.right_margin);
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out_be32(&hw->vsyn_para, info.var.upper_margin << 22 |
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info.var.vsync_len << 11 |
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info.var.lower_margin);
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out_be32(&hw->syn_pol, 0);
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out_be32(&hw->thresholds, 0x00037800);
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out_be32(&hw->int_status, 0);
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out_be32(&hw->int_mask, 0);
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out_be32(&hw->plut, 0x01F5F666);
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/* Pixel Clock configuration */
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diu_set_pixel_clock(info.var.pixclock);
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/* Set the frame buffers */
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out_be32(&hw->desc[0], virt_to_phys(ad));
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out_be32(&hw->desc[1], virt_to_phys(dummy_ad));
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out_be32(&hw->desc[2], virt_to_phys(dummy_ad));
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/* Enable the DIU, set display to all three planes */
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out_be32(&hw->diu_mode, 1);
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return 0;
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}
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void *video_hw_init(void)
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{
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static GraphicDevice ctfb;
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const char *options;
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unsigned int depth = 0, freq = 0;
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if (!video_get_video_mode(&ctfb.winSizeX, &ctfb.winSizeY, &depth, &freq,
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&options))
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return NULL;
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/* Find the monitor port, which is a required option */
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if (!options)
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return NULL;
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if (strncmp(options, "monitor=", 8) != 0)
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return NULL;
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if (platform_diu_init(ctfb.winSizeX, ctfb.winSizeY, options + 8) < 0)
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return NULL;
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/* fill in Graphic device struct */
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sprintf(ctfb.modeIdent, "%ix%ix%i %ikHz %iHz",
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ctfb.winSizeX, ctfb.winSizeY, depth, 64, freq);
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ctfb.frameAdrs = (unsigned int)info.screen_base;
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ctfb.plnSizeX = ctfb.winSizeX;
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ctfb.plnSizeY = ctfb.winSizeY;
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ctfb.gdfBytesPP = 4;
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ctfb.gdfIndex = GDF_32BIT_X888RGB;
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ctfb.isaBase = 0;
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ctfb.pciBase = 0;
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ctfb.memSize = info.screen_size;
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/* Cursor Start Address */
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ctfb.dprBase = 0;
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ctfb.vprBase = 0;
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ctfb.cprBase = 0;
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return &ctfb;
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}
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