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![Lucas De Marchi](/assets/img/avatar_default.png)
Fixes generated by 'codespell' and manually reviewed. Signed-off-by: Lucas De Marchi <lucas.demarchi@profusion.mobi>
1834 lines
46 KiB
C
1834 lines
46 KiB
C
/*
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* Copyright 2008 Freescale Semiconductor, Inc. All Rights Reserved.
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*
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* Freescale DIU Frame Buffer device driver
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*
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* Authors: Hongjun Chen <hong-jun.chen@freescale.com>
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* Paul Widmer <paul.widmer@freescale.com>
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* Srikanth Srinivasan <srikanth.srinivasan@freescale.com>
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* York Sun <yorksun@freescale.com>
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*
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* Based on imxfb.c Copyright (C) 2004 S.Hauer, Pengutronix
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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*
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*/
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#include <linux/module.h>
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#include <linux/kernel.h>
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#include <linux/errno.h>
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#include <linux/string.h>
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#include <linux/slab.h>
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#include <linux/fb.h>
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#include <linux/init.h>
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#include <linux/dma-mapping.h>
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#include <linux/platform_device.h>
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#include <linux/interrupt.h>
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#include <linux/clk.h>
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#include <linux/uaccess.h>
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#include <linux/vmalloc.h>
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#include <linux/of_platform.h>
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#include <sysdev/fsl_soc.h>
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#include <linux/fsl-diu-fb.h>
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#include "edid.h"
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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 __devinitdata fsl_diu_default_mode = {
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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 __devinitdata fsl_diu_mode_db[] = {
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{
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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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{
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.name = "1024x768-70",
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.refresh = 70,
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.xres = 1024,
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.yres = 768,
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.pixclock = 16886,
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.left_margin = 3,
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.right_margin = 3,
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.upper_margin = 2,
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.lower_margin = 2,
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.hsync_len = 40,
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.vsync_len = 18,
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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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.name = "1024x768-75",
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.refresh = 75,
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.xres = 1024,
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.yres = 768,
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.pixclock = 15009,
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.left_margin = 3,
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.right_margin = 3,
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.upper_margin = 2,
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.lower_margin = 2,
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.hsync_len = 80,
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.vsync_len = 32,
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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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.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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.name = "1280x1024-70",
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.refresh = 70,
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.xres = 1280,
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.yres = 1024,
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.pixclock = 9380,
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.left_margin = 6,
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.right_margin = 6,
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.upper_margin = 4,
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.lower_margin = 4,
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.hsync_len = 60,
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.vsync_len = 94,
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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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.name = "1280x1024-75",
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.refresh = 75,
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.xres = 1280,
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.yres = 1024,
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.pixclock = 9380,
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.left_margin = 6,
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.right_margin = 6,
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.upper_margin = 4,
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.lower_margin = 4,
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.hsync_len = 60,
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.vsync_len = 15,
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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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.name = "320x240", /* for AOI only */
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.refresh = 60,
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.xres = 320,
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.yres = 240,
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.pixclock = 15385,
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.left_margin = 0,
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.right_margin = 0,
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.upper_margin = 0,
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.lower_margin = 0,
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.hsync_len = 0,
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.vsync_len = 0,
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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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.name = "1280x480-60",
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.refresh = 60,
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.xres = 1280,
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.yres = 480,
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.pixclock = 18939,
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.left_margin = 353,
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.right_margin = 47,
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.upper_margin = 39,
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.lower_margin = 4,
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.hsync_len = 8,
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.vsync_len = 2,
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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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static char *fb_mode = "1024x768-32@60";
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static unsigned long default_bpp = 32;
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static int monitor_port;
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#if defined(CONFIG_NOT_COHERENT_CACHE)
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static u8 *coherence_data;
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static size_t coherence_data_size;
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static unsigned int d_cache_line_size;
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#endif
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static DEFINE_SPINLOCK(diu_lock);
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struct fsl_diu_data {
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struct fb_info *fsl_diu_info[FSL_AOI_NUM - 1];
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/*FSL_AOI_NUM has one dummy AOI */
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struct device_attribute dev_attr;
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struct diu_ad *dummy_ad;
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void *dummy_aoi_virt;
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unsigned int irq;
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int fb_enabled;
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int monitor_port;
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};
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struct mfb_info {
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int index;
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int type;
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char *id;
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int registered;
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int blank;
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unsigned long pseudo_palette[16];
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struct diu_ad *ad;
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int cursor_reset;
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unsigned char g_alpha;
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unsigned int count;
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int x_aoi_d; /* aoi display x offset to physical screen */
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int y_aoi_d; /* aoi display y offset to physical screen */
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struct fsl_diu_data *parent;
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u8 *edid_data;
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};
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static struct mfb_info mfb_template[] = {
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{ /* AOI 0 for plane 0 */
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.index = 0,
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.type = MFB_TYPE_OUTPUT,
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.id = "Panel0",
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.registered = 0,
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.count = 0,
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.x_aoi_d = 0,
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.y_aoi_d = 0,
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},
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{ /* AOI 0 for plane 1 */
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.index = 1,
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.type = MFB_TYPE_OUTPUT,
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.id = "Panel1 AOI0",
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.registered = 0,
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.g_alpha = 0xff,
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.count = 0,
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.x_aoi_d = 0,
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.y_aoi_d = 0,
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},
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{ /* AOI 1 for plane 1 */
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.index = 2,
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.type = MFB_TYPE_OUTPUT,
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.id = "Panel1 AOI1",
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.registered = 0,
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.g_alpha = 0xff,
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.count = 0,
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.x_aoi_d = 0,
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.y_aoi_d = 480,
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},
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{ /* AOI 0 for plane 2 */
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.index = 3,
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.type = MFB_TYPE_OUTPUT,
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.id = "Panel2 AOI0",
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.registered = 0,
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.g_alpha = 0xff,
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.count = 0,
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.x_aoi_d = 640,
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.y_aoi_d = 0,
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},
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{ /* AOI 1 for plane 2 */
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.index = 4,
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.type = MFB_TYPE_OUTPUT,
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.id = "Panel2 AOI1",
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.registered = 0,
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.g_alpha = 0xff,
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.count = 0,
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.x_aoi_d = 640,
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.y_aoi_d = 480,
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},
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};
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static struct diu_hw dr = {
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.mode = MFB_MODE1,
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.reg_lock = __SPIN_LOCK_UNLOCKED(diu_hw.reg_lock),
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};
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static struct diu_pool pool;
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/**
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* fsl_diu_alloc - allocate memory for the DIU
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* @size: number of bytes to allocate
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* @param: returned physical address of memory
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*
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* This function allocates a physically-contiguous block of memory.
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*/
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static void *fsl_diu_alloc(size_t size, phys_addr_t *phys)
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{
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void *virt;
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pr_debug("size=%zu\n", size);
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virt = alloc_pages_exact(size, GFP_DMA | __GFP_ZERO);
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if (virt) {
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*phys = virt_to_phys(virt);
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pr_debug("virt=%p phys=%llx\n", virt,
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(unsigned long long)*phys);
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}
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return virt;
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}
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/**
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* fsl_diu_free - release DIU memory
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* @virt: pointer returned by fsl_diu_alloc()
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* @size: number of bytes allocated by fsl_diu_alloc()
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*
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* This function releases memory allocated by fsl_diu_alloc().
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*/
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static void fsl_diu_free(void *virt, size_t size)
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{
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pr_debug("virt=%p size=%zu\n", virt, size);
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if (virt && size)
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free_pages_exact(virt, size);
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}
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/*
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* Workaround for failed writing desc register of planes.
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* Needed with MPC5121 DIU rev 2.0 silicon.
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*/
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void wr_reg_wa(u32 *reg, u32 val)
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{
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do {
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out_be32(reg, val);
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} while (in_be32(reg) != val);
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}
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static int fsl_diu_enable_panel(struct fb_info *info)
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{
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struct mfb_info *pmfbi, *cmfbi, *mfbi = info->par;
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struct diu *hw = dr.diu_reg;
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struct diu_ad *ad = mfbi->ad;
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struct fsl_diu_data *machine_data = mfbi->parent;
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int res = 0;
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pr_debug("enable_panel index %d\n", mfbi->index);
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if (mfbi->type != MFB_TYPE_OFF) {
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switch (mfbi->index) {
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case 0: /* plane 0 */
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if (hw->desc[0] != ad->paddr)
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wr_reg_wa(&hw->desc[0], ad->paddr);
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break;
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case 1: /* plane 1 AOI 0 */
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cmfbi = machine_data->fsl_diu_info[2]->par;
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if (hw->desc[1] != ad->paddr) { /* AOI0 closed */
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if (cmfbi->count > 0) /* AOI1 open */
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ad->next_ad =
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cpu_to_le32(cmfbi->ad->paddr);
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else
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ad->next_ad = 0;
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wr_reg_wa(&hw->desc[1], ad->paddr);
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}
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break;
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case 3: /* plane 2 AOI 0 */
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cmfbi = machine_data->fsl_diu_info[4]->par;
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if (hw->desc[2] != ad->paddr) { /* AOI0 closed */
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if (cmfbi->count > 0) /* AOI1 open */
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ad->next_ad =
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cpu_to_le32(cmfbi->ad->paddr);
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else
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ad->next_ad = 0;
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wr_reg_wa(&hw->desc[2], ad->paddr);
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}
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break;
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case 2: /* plane 1 AOI 1 */
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pmfbi = machine_data->fsl_diu_info[1]->par;
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ad->next_ad = 0;
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if (hw->desc[1] == machine_data->dummy_ad->paddr)
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wr_reg_wa(&hw->desc[1], ad->paddr);
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else /* AOI0 open */
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pmfbi->ad->next_ad = cpu_to_le32(ad->paddr);
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break;
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case 4: /* plane 2 AOI 1 */
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pmfbi = machine_data->fsl_diu_info[3]->par;
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ad->next_ad = 0;
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if (hw->desc[2] == machine_data->dummy_ad->paddr)
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wr_reg_wa(&hw->desc[2], ad->paddr);
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else /* AOI0 was open */
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pmfbi->ad->next_ad = cpu_to_le32(ad->paddr);
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break;
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default:
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res = -EINVAL;
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break;
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}
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} else
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res = -EINVAL;
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return res;
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}
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static int fsl_diu_disable_panel(struct fb_info *info)
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{
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struct mfb_info *pmfbi, *cmfbi, *mfbi = info->par;
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struct diu *hw = dr.diu_reg;
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struct diu_ad *ad = mfbi->ad;
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struct fsl_diu_data *machine_data = mfbi->parent;
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int res = 0;
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switch (mfbi->index) {
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case 0: /* plane 0 */
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if (hw->desc[0] != machine_data->dummy_ad->paddr)
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wr_reg_wa(&hw->desc[0], machine_data->dummy_ad->paddr);
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break;
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case 1: /* plane 1 AOI 0 */
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cmfbi = machine_data->fsl_diu_info[2]->par;
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if (cmfbi->count > 0) /* AOI1 is open */
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wr_reg_wa(&hw->desc[1], cmfbi->ad->paddr);
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/* move AOI1 to the first */
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else /* AOI1 was closed */
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wr_reg_wa(&hw->desc[1], machine_data->dummy_ad->paddr);
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/* close AOI 0 */
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break;
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case 3: /* plane 2 AOI 0 */
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cmfbi = machine_data->fsl_diu_info[4]->par;
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if (cmfbi->count > 0) /* AOI1 is open */
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wr_reg_wa(&hw->desc[2], cmfbi->ad->paddr);
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/* move AOI1 to the first */
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else /* AOI1 was closed */
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wr_reg_wa(&hw->desc[2], machine_data->dummy_ad->paddr);
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/* close AOI 0 */
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break;
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case 2: /* plane 1 AOI 1 */
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pmfbi = machine_data->fsl_diu_info[1]->par;
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if (hw->desc[1] != ad->paddr) {
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/* AOI1 is not the first in the chain */
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if (pmfbi->count > 0)
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/* AOI0 is open, must be the first */
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pmfbi->ad->next_ad = 0;
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} else /* AOI1 is the first in the chain */
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wr_reg_wa(&hw->desc[1], machine_data->dummy_ad->paddr);
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/* close AOI 1 */
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break;
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case 4: /* plane 2 AOI 1 */
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pmfbi = machine_data->fsl_diu_info[3]->par;
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if (hw->desc[2] != ad->paddr) {
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/* AOI1 is not the first in the chain */
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if (pmfbi->count > 0)
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/* AOI0 is open, must be the first */
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pmfbi->ad->next_ad = 0;
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} else /* AOI1 is the first in the chain */
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wr_reg_wa(&hw->desc[2], machine_data->dummy_ad->paddr);
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/* close AOI 1 */
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break;
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default:
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res = -EINVAL;
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break;
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}
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return res;
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}
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static void enable_lcdc(struct fb_info *info)
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{
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struct diu *hw = dr.diu_reg;
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struct mfb_info *mfbi = info->par;
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struct fsl_diu_data *machine_data = mfbi->parent;
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if (!machine_data->fb_enabled) {
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out_be32(&hw->diu_mode, dr.mode);
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machine_data->fb_enabled++;
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}
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}
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static void disable_lcdc(struct fb_info *info)
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{
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struct diu *hw = dr.diu_reg;
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struct mfb_info *mfbi = info->par;
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struct fsl_diu_data *machine_data = mfbi->parent;
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if (machine_data->fb_enabled) {
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out_be32(&hw->diu_mode, 0);
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machine_data->fb_enabled = 0;
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}
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}
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static void adjust_aoi_size_position(struct fb_var_screeninfo *var,
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struct fb_info *info)
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{
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struct mfb_info *lower_aoi_mfbi, *upper_aoi_mfbi, *mfbi = info->par;
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struct fsl_diu_data *machine_data = mfbi->parent;
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int available_height, upper_aoi_bottom, index = mfbi->index;
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int lower_aoi_is_open, upper_aoi_is_open;
|
|
__u32 base_plane_width, base_plane_height, upper_aoi_height;
|
|
|
|
base_plane_width = machine_data->fsl_diu_info[0]->var.xres;
|
|
base_plane_height = machine_data->fsl_diu_info[0]->var.yres;
|
|
|
|
if (mfbi->x_aoi_d < 0)
|
|
mfbi->x_aoi_d = 0;
|
|
if (mfbi->y_aoi_d < 0)
|
|
mfbi->y_aoi_d = 0;
|
|
switch (index) {
|
|
case 0:
|
|
if (mfbi->x_aoi_d != 0)
|
|
mfbi->x_aoi_d = 0;
|
|
if (mfbi->y_aoi_d != 0)
|
|
mfbi->y_aoi_d = 0;
|
|
break;
|
|
case 1: /* AOI 0 */
|
|
case 3:
|
|
lower_aoi_mfbi = machine_data->fsl_diu_info[index+1]->par;
|
|
lower_aoi_is_open = lower_aoi_mfbi->count > 0 ? 1 : 0;
|
|
if (var->xres > base_plane_width)
|
|
var->xres = base_plane_width;
|
|
if ((mfbi->x_aoi_d + var->xres) > base_plane_width)
|
|
mfbi->x_aoi_d = base_plane_width - var->xres;
|
|
|
|
if (lower_aoi_is_open)
|
|
available_height = lower_aoi_mfbi->y_aoi_d;
|
|
else
|
|
available_height = base_plane_height;
|
|
if (var->yres > available_height)
|
|
var->yres = available_height;
|
|
if ((mfbi->y_aoi_d + var->yres) > available_height)
|
|
mfbi->y_aoi_d = available_height - var->yres;
|
|
break;
|
|
case 2: /* AOI 1 */
|
|
case 4:
|
|
upper_aoi_mfbi = machine_data->fsl_diu_info[index-1]->par;
|
|
upper_aoi_height =
|
|
machine_data->fsl_diu_info[index-1]->var.yres;
|
|
upper_aoi_bottom = upper_aoi_mfbi->y_aoi_d + upper_aoi_height;
|
|
upper_aoi_is_open = upper_aoi_mfbi->count > 0 ? 1 : 0;
|
|
if (var->xres > base_plane_width)
|
|
var->xres = base_plane_width;
|
|
if ((mfbi->x_aoi_d + var->xres) > base_plane_width)
|
|
mfbi->x_aoi_d = base_plane_width - var->xres;
|
|
if (mfbi->y_aoi_d < 0)
|
|
mfbi->y_aoi_d = 0;
|
|
if (upper_aoi_is_open) {
|
|
if (mfbi->y_aoi_d < upper_aoi_bottom)
|
|
mfbi->y_aoi_d = upper_aoi_bottom;
|
|
available_height = base_plane_height
|
|
- upper_aoi_bottom;
|
|
} else
|
|
available_height = base_plane_height;
|
|
if (var->yres > available_height)
|
|
var->yres = available_height;
|
|
if ((mfbi->y_aoi_d + var->yres) > base_plane_height)
|
|
mfbi->y_aoi_d = base_plane_height - var->yres;
|
|
break;
|
|
}
|
|
}
|
|
/*
|
|
* Checks to see if the hardware supports the state requested by var passed
|
|
* in. This function does not alter the hardware state! If the var passed in
|
|
* is slightly off by what the hardware can support then we alter the var
|
|
* PASSED in to what we can do. If the hardware doesn't support mode change
|
|
* a -EINVAL will be returned by the upper layers.
|
|
*/
|
|
static int fsl_diu_check_var(struct fb_var_screeninfo *var,
|
|
struct fb_info *info)
|
|
{
|
|
unsigned long htotal, vtotal;
|
|
|
|
pr_debug("check_var xres: %d\n", var->xres);
|
|
pr_debug("check_var yres: %d\n", var->yres);
|
|
|
|
if (var->xres_virtual < var->xres)
|
|
var->xres_virtual = var->xres;
|
|
if (var->yres_virtual < var->yres)
|
|
var->yres_virtual = var->yres;
|
|
|
|
if (var->xoffset < 0)
|
|
var->xoffset = 0;
|
|
|
|
if (var->yoffset < 0)
|
|
var->yoffset = 0;
|
|
|
|
if (var->xoffset + info->var.xres > info->var.xres_virtual)
|
|
var->xoffset = info->var.xres_virtual - info->var.xres;
|
|
|
|
if (var->yoffset + info->var.yres > info->var.yres_virtual)
|
|
var->yoffset = info->var.yres_virtual - info->var.yres;
|
|
|
|
if ((var->bits_per_pixel != 32) && (var->bits_per_pixel != 24) &&
|
|
(var->bits_per_pixel != 16))
|
|
var->bits_per_pixel = default_bpp;
|
|
|
|
switch (var->bits_per_pixel) {
|
|
case 16:
|
|
var->red.length = 5;
|
|
var->red.offset = 11;
|
|
var->red.msb_right = 0;
|
|
|
|
var->green.length = 6;
|
|
var->green.offset = 5;
|
|
var->green.msb_right = 0;
|
|
|
|
var->blue.length = 5;
|
|
var->blue.offset = 0;
|
|
var->blue.msb_right = 0;
|
|
|
|
var->transp.length = 0;
|
|
var->transp.offset = 0;
|
|
var->transp.msb_right = 0;
|
|
break;
|
|
case 24:
|
|
var->red.length = 8;
|
|
var->red.offset = 0;
|
|
var->red.msb_right = 0;
|
|
|
|
var->green.length = 8;
|
|
var->green.offset = 8;
|
|
var->green.msb_right = 0;
|
|
|
|
var->blue.length = 8;
|
|
var->blue.offset = 16;
|
|
var->blue.msb_right = 0;
|
|
|
|
var->transp.length = 0;
|
|
var->transp.offset = 0;
|
|
var->transp.msb_right = 0;
|
|
break;
|
|
case 32:
|
|
var->red.length = 8;
|
|
var->red.offset = 16;
|
|
var->red.msb_right = 0;
|
|
|
|
var->green.length = 8;
|
|
var->green.offset = 8;
|
|
var->green.msb_right = 0;
|
|
|
|
var->blue.length = 8;
|
|
var->blue.offset = 0;
|
|
var->blue.msb_right = 0;
|
|
|
|
var->transp.length = 8;
|
|
var->transp.offset = 24;
|
|
var->transp.msb_right = 0;
|
|
|
|
break;
|
|
}
|
|
/* If the pixclock is below the minimum spec'd value then set to
|
|
* refresh rate for 60Hz since this is supported by most monitors.
|
|
* Refer to Documentation/fb/ for calculations.
|
|
*/
|
|
if ((var->pixclock < MIN_PIX_CLK) || (var->pixclock > MAX_PIX_CLK)) {
|
|
htotal = var->xres + var->right_margin + var->hsync_len +
|
|
var->left_margin;
|
|
vtotal = var->yres + var->lower_margin + var->vsync_len +
|
|
var->upper_margin;
|
|
var->pixclock = (vtotal * htotal * 6UL) / 100UL;
|
|
var->pixclock = KHZ2PICOS(var->pixclock);
|
|
pr_debug("pixclock set for 60Hz refresh = %u ps\n",
|
|
var->pixclock);
|
|
}
|
|
|
|
var->height = -1;
|
|
var->width = -1;
|
|
var->grayscale = 0;
|
|
|
|
/* Copy nonstd field to/from sync for fbset usage */
|
|
var->sync |= var->nonstd;
|
|
var->nonstd |= var->sync;
|
|
|
|
adjust_aoi_size_position(var, info);
|
|
return 0;
|
|
}
|
|
|
|
static void set_fix(struct fb_info *info)
|
|
{
|
|
struct fb_fix_screeninfo *fix = &info->fix;
|
|
struct fb_var_screeninfo *var = &info->var;
|
|
struct mfb_info *mfbi = info->par;
|
|
|
|
strncpy(fix->id, mfbi->id, strlen(mfbi->id));
|
|
fix->line_length = var->xres_virtual * var->bits_per_pixel / 8;
|
|
fix->type = FB_TYPE_PACKED_PIXELS;
|
|
fix->accel = FB_ACCEL_NONE;
|
|
fix->visual = FB_VISUAL_TRUECOLOR;
|
|
fix->xpanstep = 1;
|
|
fix->ypanstep = 1;
|
|
}
|
|
|
|
static void update_lcdc(struct fb_info *info)
|
|
{
|
|
struct fb_var_screeninfo *var = &info->var;
|
|
struct mfb_info *mfbi = info->par;
|
|
struct fsl_diu_data *machine_data = mfbi->parent;
|
|
struct diu *hw;
|
|
int i, j;
|
|
char __iomem *cursor_base, *gamma_table_base;
|
|
|
|
u32 temp;
|
|
|
|
hw = dr.diu_reg;
|
|
|
|
if (mfbi->type == MFB_TYPE_OFF) {
|
|
fsl_diu_disable_panel(info);
|
|
return;
|
|
}
|
|
|
|
diu_ops.set_monitor_port(machine_data->monitor_port);
|
|
gamma_table_base = pool.gamma.vaddr;
|
|
cursor_base = pool.cursor.vaddr;
|
|
/* Prep for DIU init - gamma table, cursor table */
|
|
|
|
for (i = 0; i <= 2; i++)
|
|
for (j = 0; j <= 255; j++)
|
|
*gamma_table_base++ = j;
|
|
|
|
diu_ops.set_gamma_table(machine_data->monitor_port, pool.gamma.vaddr);
|
|
|
|
pr_debug("update-lcdc: HW - %p\n Disabling DIU\n", hw);
|
|
disable_lcdc(info);
|
|
|
|
/* Program DIU registers */
|
|
|
|
out_be32(&hw->gamma, pool.gamma.paddr);
|
|
out_be32(&hw->cursor, pool.cursor.paddr);
|
|
|
|
out_be32(&hw->bgnd, 0x007F7F7F); /* BGND */
|
|
out_be32(&hw->bgnd_wb, 0); /* BGND_WB */
|
|
out_be32(&hw->disp_size, (var->yres << 16 | var->xres));
|
|
/* DISP SIZE */
|
|
pr_debug("DIU xres: %d\n", var->xres);
|
|
pr_debug("DIU yres: %d\n", var->yres);
|
|
|
|
out_be32(&hw->wb_size, 0); /* WB SIZE */
|
|
out_be32(&hw->wb_mem_addr, 0); /* WB MEM ADDR */
|
|
|
|
/* Horizontal and vertical configuration register */
|
|
temp = var->left_margin << 22 | /* BP_H */
|
|
var->hsync_len << 11 | /* PW_H */
|
|
var->right_margin; /* FP_H */
|
|
|
|
out_be32(&hw->hsyn_para, temp);
|
|
|
|
temp = var->upper_margin << 22 | /* BP_V */
|
|
var->vsync_len << 11 | /* PW_V */
|
|
var->lower_margin; /* FP_V */
|
|
|
|
out_be32(&hw->vsyn_para, temp);
|
|
|
|
pr_debug("DIU right_margin - %d\n", var->right_margin);
|
|
pr_debug("DIU left_margin - %d\n", var->left_margin);
|
|
pr_debug("DIU hsync_len - %d\n", var->hsync_len);
|
|
pr_debug("DIU upper_margin - %d\n", var->upper_margin);
|
|
pr_debug("DIU lower_margin - %d\n", var->lower_margin);
|
|
pr_debug("DIU vsync_len - %d\n", var->vsync_len);
|
|
pr_debug("DIU HSYNC - 0x%08x\n", hw->hsyn_para);
|
|
pr_debug("DIU VSYNC - 0x%08x\n", hw->vsyn_para);
|
|
|
|
diu_ops.set_pixel_clock(var->pixclock);
|
|
|
|
out_be32(&hw->syn_pol, 0); /* SYNC SIGNALS POLARITY */
|
|
out_be32(&hw->thresholds, 0x00037800); /* The Thresholds */
|
|
out_be32(&hw->int_status, 0); /* INTERRUPT STATUS */
|
|
out_be32(&hw->plut, 0x01F5F666);
|
|
|
|
/* Enable the DIU */
|
|
enable_lcdc(info);
|
|
}
|
|
|
|
static int map_video_memory(struct fb_info *info)
|
|
{
|
|
phys_addr_t phys;
|
|
u32 smem_len = info->fix.line_length * info->var.yres_virtual;
|
|
|
|
pr_debug("info->var.xres_virtual = %d\n", info->var.xres_virtual);
|
|
pr_debug("info->var.yres_virtual = %d\n", info->var.yres_virtual);
|
|
pr_debug("info->fix.line_length = %d\n", info->fix.line_length);
|
|
pr_debug("MAP_VIDEO_MEMORY: smem_len = %u\n", smem_len);
|
|
|
|
info->screen_base = fsl_diu_alloc(smem_len, &phys);
|
|
if (info->screen_base == NULL) {
|
|
printk(KERN_ERR "Unable to allocate fb memory\n");
|
|
return -ENOMEM;
|
|
}
|
|
mutex_lock(&info->mm_lock);
|
|
info->fix.smem_start = (unsigned long) phys;
|
|
info->fix.smem_len = smem_len;
|
|
mutex_unlock(&info->mm_lock);
|
|
info->screen_size = info->fix.smem_len;
|
|
|
|
pr_debug("Allocated fb @ paddr=0x%08lx, size=%d.\n",
|
|
info->fix.smem_start, info->fix.smem_len);
|
|
pr_debug("screen base %p\n", info->screen_base);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void unmap_video_memory(struct fb_info *info)
|
|
{
|
|
fsl_diu_free(info->screen_base, info->fix.smem_len);
|
|
mutex_lock(&info->mm_lock);
|
|
info->screen_base = NULL;
|
|
info->fix.smem_start = 0;
|
|
info->fix.smem_len = 0;
|
|
mutex_unlock(&info->mm_lock);
|
|
}
|
|
|
|
/*
|
|
* Using the fb_var_screeninfo in fb_info we set the aoi of this
|
|
* particular framebuffer. It is a light version of fsl_diu_set_par.
|
|
*/
|
|
static int fsl_diu_set_aoi(struct fb_info *info)
|
|
{
|
|
struct fb_var_screeninfo *var = &info->var;
|
|
struct mfb_info *mfbi = info->par;
|
|
struct diu_ad *ad = mfbi->ad;
|
|
|
|
/* AOI should not be greater than display size */
|
|
ad->offset_xyi = cpu_to_le32((var->yoffset << 16) | var->xoffset);
|
|
ad->offset_xyd = cpu_to_le32((mfbi->y_aoi_d << 16) | mfbi->x_aoi_d);
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Using the fb_var_screeninfo in fb_info we set the resolution of this
|
|
* particular framebuffer. This function alters the fb_fix_screeninfo stored
|
|
* in fb_info. It does not alter var in fb_info since we are using that
|
|
* data. This means we depend on the data in var inside fb_info to be
|
|
* supported by the hardware. fsl_diu_check_var is always called before
|
|
* fsl_diu_set_par to ensure this.
|
|
*/
|
|
static int fsl_diu_set_par(struct fb_info *info)
|
|
{
|
|
unsigned long len;
|
|
struct fb_var_screeninfo *var = &info->var;
|
|
struct mfb_info *mfbi = info->par;
|
|
struct fsl_diu_data *machine_data = mfbi->parent;
|
|
struct diu_ad *ad = mfbi->ad;
|
|
struct diu *hw;
|
|
|
|
hw = dr.diu_reg;
|
|
|
|
set_fix(info);
|
|
mfbi->cursor_reset = 1;
|
|
|
|
len = info->var.yres_virtual * info->fix.line_length;
|
|
/* Alloc & dealloc each time resolution/bpp change */
|
|
if (len != info->fix.smem_len) {
|
|
if (info->fix.smem_start)
|
|
unmap_video_memory(info);
|
|
pr_debug("SET PAR: smem_len = %d\n", info->fix.smem_len);
|
|
|
|
/* Memory allocation for framebuffer */
|
|
if (map_video_memory(info)) {
|
|
printk(KERN_ERR "Unable to allocate fb memory 1\n");
|
|
return -ENOMEM;
|
|
}
|
|
}
|
|
|
|
ad->pix_fmt =
|
|
diu_ops.get_pixel_format(var->bits_per_pixel,
|
|
machine_data->monitor_port);
|
|
ad->addr = cpu_to_le32(info->fix.smem_start);
|
|
ad->src_size_g_alpha = cpu_to_le32((var->yres_virtual << 12) |
|
|
var->xres_virtual) | mfbi->g_alpha;
|
|
/* AOI should not be greater than display size */
|
|
ad->aoi_size = cpu_to_le32((var->yres << 16) | var->xres);
|
|
ad->offset_xyi = cpu_to_le32((var->yoffset << 16) | var->xoffset);
|
|
ad->offset_xyd = cpu_to_le32((mfbi->y_aoi_d << 16) | mfbi->x_aoi_d);
|
|
|
|
/* Disable chroma keying function */
|
|
ad->ckmax_r = 0;
|
|
ad->ckmax_g = 0;
|
|
ad->ckmax_b = 0;
|
|
|
|
ad->ckmin_r = 255;
|
|
ad->ckmin_g = 255;
|
|
ad->ckmin_b = 255;
|
|
|
|
if (mfbi->index == 0)
|
|
update_lcdc(info);
|
|
return 0;
|
|
}
|
|
|
|
static inline __u32 CNVT_TOHW(__u32 val, __u32 width)
|
|
{
|
|
return ((val<<width) + 0x7FFF - val)>>16;
|
|
}
|
|
|
|
/*
|
|
* Set a single color register. The values supplied have a 16 bit magnitude
|
|
* which needs to be scaled in this function for the hardware. Things to take
|
|
* into consideration are how many color registers, if any, are supported with
|
|
* the current color visual. With truecolor mode no color palettes are
|
|
* supported. Here a pseudo palette is created which we store the value in
|
|
* pseudo_palette in struct fb_info. For pseudocolor mode we have a limited
|
|
* color palette.
|
|
*/
|
|
static int fsl_diu_setcolreg(unsigned regno, unsigned red, unsigned green,
|
|
unsigned blue, unsigned transp, struct fb_info *info)
|
|
{
|
|
int ret = 1;
|
|
|
|
/*
|
|
* If greyscale is true, then we convert the RGB value
|
|
* to greyscale no matter what visual we are using.
|
|
*/
|
|
if (info->var.grayscale)
|
|
red = green = blue = (19595 * red + 38470 * green +
|
|
7471 * blue) >> 16;
|
|
switch (info->fix.visual) {
|
|
case FB_VISUAL_TRUECOLOR:
|
|
/*
|
|
* 16-bit True Colour. We encode the RGB value
|
|
* according to the RGB bitfield information.
|
|
*/
|
|
if (regno < 16) {
|
|
u32 *pal = info->pseudo_palette;
|
|
u32 v;
|
|
|
|
red = CNVT_TOHW(red, info->var.red.length);
|
|
green = CNVT_TOHW(green, info->var.green.length);
|
|
blue = CNVT_TOHW(blue, info->var.blue.length);
|
|
transp = CNVT_TOHW(transp, info->var.transp.length);
|
|
|
|
v = (red << info->var.red.offset) |
|
|
(green << info->var.green.offset) |
|
|
(blue << info->var.blue.offset) |
|
|
(transp << info->var.transp.offset);
|
|
|
|
pal[regno] = v;
|
|
ret = 0;
|
|
}
|
|
break;
|
|
case FB_VISUAL_STATIC_PSEUDOCOLOR:
|
|
case FB_VISUAL_PSEUDOCOLOR:
|
|
break;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
/*
|
|
* Pan (or wrap, depending on the `vmode' field) the display using the
|
|
* 'xoffset' and 'yoffset' fields of the 'var' structure. If the values
|
|
* don't fit, return -EINVAL.
|
|
*/
|
|
static int fsl_diu_pan_display(struct fb_var_screeninfo *var,
|
|
struct fb_info *info)
|
|
{
|
|
if ((info->var.xoffset == var->xoffset) &&
|
|
(info->var.yoffset == var->yoffset))
|
|
return 0; /* No change, do nothing */
|
|
|
|
if (var->xoffset < 0 || var->yoffset < 0
|
|
|| var->xoffset + info->var.xres > info->var.xres_virtual
|
|
|| var->yoffset + info->var.yres > info->var.yres_virtual)
|
|
return -EINVAL;
|
|
|
|
info->var.xoffset = var->xoffset;
|
|
info->var.yoffset = var->yoffset;
|
|
|
|
if (var->vmode & FB_VMODE_YWRAP)
|
|
info->var.vmode |= FB_VMODE_YWRAP;
|
|
else
|
|
info->var.vmode &= ~FB_VMODE_YWRAP;
|
|
|
|
fsl_diu_set_aoi(info);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Blank the screen if blank_mode != 0, else unblank. Return 0 if blanking
|
|
* succeeded, != 0 if un-/blanking failed.
|
|
* blank_mode == 2: suspend vsync
|
|
* blank_mode == 3: suspend hsync
|
|
* blank_mode == 4: powerdown
|
|
*/
|
|
static int fsl_diu_blank(int blank_mode, struct fb_info *info)
|
|
{
|
|
struct mfb_info *mfbi = info->par;
|
|
|
|
mfbi->blank = blank_mode;
|
|
|
|
switch (blank_mode) {
|
|
case FB_BLANK_VSYNC_SUSPEND:
|
|
case FB_BLANK_HSYNC_SUSPEND:
|
|
/* FIXME: fixes to enable_panel and enable lcdc needed */
|
|
case FB_BLANK_NORMAL:
|
|
/* fsl_diu_disable_panel(info);*/
|
|
break;
|
|
case FB_BLANK_POWERDOWN:
|
|
/* disable_lcdc(info); */
|
|
break;
|
|
case FB_BLANK_UNBLANK:
|
|
/* fsl_diu_enable_panel(info);*/
|
|
break;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int fsl_diu_ioctl(struct fb_info *info, unsigned int cmd,
|
|
unsigned long arg)
|
|
{
|
|
struct mfb_info *mfbi = info->par;
|
|
struct diu_ad *ad = mfbi->ad;
|
|
struct mfb_chroma_key ck;
|
|
unsigned char global_alpha;
|
|
struct aoi_display_offset aoi_d;
|
|
__u32 pix_fmt;
|
|
void __user *buf = (void __user *)arg;
|
|
|
|
if (!arg)
|
|
return -EINVAL;
|
|
switch (cmd) {
|
|
case MFB_SET_PIXFMT:
|
|
if (copy_from_user(&pix_fmt, buf, sizeof(pix_fmt)))
|
|
return -EFAULT;
|
|
ad->pix_fmt = pix_fmt;
|
|
pr_debug("Set pixel format to 0x%08x\n", ad->pix_fmt);
|
|
break;
|
|
case MFB_GET_PIXFMT:
|
|
pix_fmt = ad->pix_fmt;
|
|
if (copy_to_user(buf, &pix_fmt, sizeof(pix_fmt)))
|
|
return -EFAULT;
|
|
pr_debug("get pixel format 0x%08x\n", ad->pix_fmt);
|
|
break;
|
|
case MFB_SET_AOID:
|
|
if (copy_from_user(&aoi_d, buf, sizeof(aoi_d)))
|
|
return -EFAULT;
|
|
mfbi->x_aoi_d = aoi_d.x_aoi_d;
|
|
mfbi->y_aoi_d = aoi_d.y_aoi_d;
|
|
pr_debug("set AOI display offset of index %d to (%d,%d)\n",
|
|
mfbi->index, aoi_d.x_aoi_d, aoi_d.y_aoi_d);
|
|
fsl_diu_check_var(&info->var, info);
|
|
fsl_diu_set_aoi(info);
|
|
break;
|
|
case MFB_GET_AOID:
|
|
aoi_d.x_aoi_d = mfbi->x_aoi_d;
|
|
aoi_d.y_aoi_d = mfbi->y_aoi_d;
|
|
if (copy_to_user(buf, &aoi_d, sizeof(aoi_d)))
|
|
return -EFAULT;
|
|
pr_debug("get AOI display offset of index %d (%d,%d)\n",
|
|
mfbi->index, aoi_d.x_aoi_d, aoi_d.y_aoi_d);
|
|
break;
|
|
case MFB_GET_ALPHA:
|
|
global_alpha = mfbi->g_alpha;
|
|
if (copy_to_user(buf, &global_alpha, sizeof(global_alpha)))
|
|
return -EFAULT;
|
|
pr_debug("get global alpha of index %d\n", mfbi->index);
|
|
break;
|
|
case MFB_SET_ALPHA:
|
|
/* set panel information */
|
|
if (copy_from_user(&global_alpha, buf, sizeof(global_alpha)))
|
|
return -EFAULT;
|
|
ad->src_size_g_alpha = (ad->src_size_g_alpha & (~0xff)) |
|
|
(global_alpha & 0xff);
|
|
mfbi->g_alpha = global_alpha;
|
|
pr_debug("set global alpha for index %d\n", mfbi->index);
|
|
break;
|
|
case MFB_SET_CHROMA_KEY:
|
|
/* set panel winformation */
|
|
if (copy_from_user(&ck, buf, sizeof(ck)))
|
|
return -EFAULT;
|
|
|
|
if (ck.enable &&
|
|
(ck.red_max < ck.red_min ||
|
|
ck.green_max < ck.green_min ||
|
|
ck.blue_max < ck.blue_min))
|
|
return -EINVAL;
|
|
|
|
if (!ck.enable) {
|
|
ad->ckmax_r = 0;
|
|
ad->ckmax_g = 0;
|
|
ad->ckmax_b = 0;
|
|
ad->ckmin_r = 255;
|
|
ad->ckmin_g = 255;
|
|
ad->ckmin_b = 255;
|
|
} else {
|
|
ad->ckmax_r = ck.red_max;
|
|
ad->ckmax_g = ck.green_max;
|
|
ad->ckmax_b = ck.blue_max;
|
|
ad->ckmin_r = ck.red_min;
|
|
ad->ckmin_g = ck.green_min;
|
|
ad->ckmin_b = ck.blue_min;
|
|
}
|
|
pr_debug("set chroma key\n");
|
|
break;
|
|
case FBIOGET_GWINFO:
|
|
if (mfbi->type == MFB_TYPE_OFF)
|
|
return -ENODEV;
|
|
/* get graphic window information */
|
|
if (copy_to_user(buf, ad, sizeof(*ad)))
|
|
return -EFAULT;
|
|
break;
|
|
case FBIOGET_HWCINFO:
|
|
pr_debug("FBIOGET_HWCINFO:0x%08x\n", FBIOGET_HWCINFO);
|
|
break;
|
|
case FBIOPUT_MODEINFO:
|
|
pr_debug("FBIOPUT_MODEINFO:0x%08x\n", FBIOPUT_MODEINFO);
|
|
break;
|
|
case FBIOGET_DISPINFO:
|
|
pr_debug("FBIOGET_DISPINFO:0x%08x\n", FBIOGET_DISPINFO);
|
|
break;
|
|
|
|
default:
|
|
printk(KERN_ERR "Unknown ioctl command (0x%08X)\n", cmd);
|
|
return -ENOIOCTLCMD;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* turn on fb if count == 1
|
|
*/
|
|
static int fsl_diu_open(struct fb_info *info, int user)
|
|
{
|
|
struct mfb_info *mfbi = info->par;
|
|
int res = 0;
|
|
|
|
/* free boot splash memory on first /dev/fb0 open */
|
|
if (!mfbi->index && diu_ops.release_bootmem)
|
|
diu_ops.release_bootmem();
|
|
|
|
spin_lock(&diu_lock);
|
|
mfbi->count++;
|
|
if (mfbi->count == 1) {
|
|
pr_debug("open plane index %d\n", mfbi->index);
|
|
fsl_diu_check_var(&info->var, info);
|
|
res = fsl_diu_set_par(info);
|
|
if (res < 0)
|
|
mfbi->count--;
|
|
else {
|
|
res = fsl_diu_enable_panel(info);
|
|
if (res < 0)
|
|
mfbi->count--;
|
|
}
|
|
}
|
|
|
|
spin_unlock(&diu_lock);
|
|
return res;
|
|
}
|
|
|
|
/* turn off fb if count == 0
|
|
*/
|
|
static int fsl_diu_release(struct fb_info *info, int user)
|
|
{
|
|
struct mfb_info *mfbi = info->par;
|
|
int res = 0;
|
|
|
|
spin_lock(&diu_lock);
|
|
mfbi->count--;
|
|
if (mfbi->count == 0) {
|
|
pr_debug("release plane index %d\n", mfbi->index);
|
|
res = fsl_diu_disable_panel(info);
|
|
if (res < 0)
|
|
mfbi->count++;
|
|
}
|
|
spin_unlock(&diu_lock);
|
|
return res;
|
|
}
|
|
|
|
static struct fb_ops fsl_diu_ops = {
|
|
.owner = THIS_MODULE,
|
|
.fb_check_var = fsl_diu_check_var,
|
|
.fb_set_par = fsl_diu_set_par,
|
|
.fb_setcolreg = fsl_diu_setcolreg,
|
|
.fb_blank = fsl_diu_blank,
|
|
.fb_pan_display = fsl_diu_pan_display,
|
|
.fb_fillrect = cfb_fillrect,
|
|
.fb_copyarea = cfb_copyarea,
|
|
.fb_imageblit = cfb_imageblit,
|
|
.fb_ioctl = fsl_diu_ioctl,
|
|
.fb_open = fsl_diu_open,
|
|
.fb_release = fsl_diu_release,
|
|
};
|
|
|
|
static int init_fbinfo(struct fb_info *info)
|
|
{
|
|
struct mfb_info *mfbi = info->par;
|
|
|
|
info->device = NULL;
|
|
info->var.activate = FB_ACTIVATE_NOW;
|
|
info->fbops = &fsl_diu_ops;
|
|
info->flags = FBINFO_FLAG_DEFAULT;
|
|
info->pseudo_palette = &mfbi->pseudo_palette;
|
|
|
|
/* Allocate colormap */
|
|
fb_alloc_cmap(&info->cmap, 16, 0);
|
|
return 0;
|
|
}
|
|
|
|
static int __devinit install_fb(struct fb_info *info)
|
|
{
|
|
int rc;
|
|
struct mfb_info *mfbi = info->par;
|
|
const char *aoi_mode, *init_aoi_mode = "320x240";
|
|
struct fb_videomode *db = fsl_diu_mode_db;
|
|
unsigned int dbsize = ARRAY_SIZE(fsl_diu_mode_db);
|
|
int has_default_mode = 1;
|
|
|
|
if (init_fbinfo(info))
|
|
return -EINVAL;
|
|
|
|
if (mfbi->index == 0) { /* plane 0 */
|
|
if (mfbi->edid_data) {
|
|
/* Now build modedb from EDID */
|
|
fb_edid_to_monspecs(mfbi->edid_data, &info->monspecs);
|
|
fb_videomode_to_modelist(info->monspecs.modedb,
|
|
info->monspecs.modedb_len,
|
|
&info->modelist);
|
|
db = info->monspecs.modedb;
|
|
dbsize = info->monspecs.modedb_len;
|
|
}
|
|
aoi_mode = fb_mode;
|
|
} else {
|
|
aoi_mode = init_aoi_mode;
|
|
}
|
|
pr_debug("mode used = %s\n", aoi_mode);
|
|
rc = fb_find_mode(&info->var, info, aoi_mode, db, dbsize,
|
|
&fsl_diu_default_mode, default_bpp);
|
|
switch (rc) {
|
|
case 1:
|
|
pr_debug("using mode specified in @mode\n");
|
|
break;
|
|
case 2:
|
|
pr_debug("using mode specified in @mode "
|
|
"with ignored refresh rate\n");
|
|
break;
|
|
case 3:
|
|
pr_debug("using mode default mode\n");
|
|
break;
|
|
case 4:
|
|
pr_debug("using mode from list\n");
|
|
break;
|
|
default:
|
|
pr_debug("rc = %d\n", rc);
|
|
pr_debug("failed to find mode\n");
|
|
/*
|
|
* For plane 0 we continue and look into
|
|
* driver's internal modedb.
|
|
*/
|
|
if (mfbi->index == 0 && mfbi->edid_data)
|
|
has_default_mode = 0;
|
|
else
|
|
return -EINVAL;
|
|
break;
|
|
}
|
|
|
|
if (!has_default_mode) {
|
|
rc = fb_find_mode(&info->var, info, aoi_mode, fsl_diu_mode_db,
|
|
ARRAY_SIZE(fsl_diu_mode_db),
|
|
&fsl_diu_default_mode,
|
|
default_bpp);
|
|
if (rc > 0 && rc < 5)
|
|
has_default_mode = 1;
|
|
}
|
|
|
|
/* Still not found, use preferred mode from database if any */
|
|
if (!has_default_mode && info->monspecs.modedb) {
|
|
struct fb_monspecs *specs = &info->monspecs;
|
|
struct fb_videomode *modedb = &specs->modedb[0];
|
|
|
|
/*
|
|
* Get preferred timing. If not found,
|
|
* first mode in database will be used.
|
|
*/
|
|
if (specs->misc & FB_MISC_1ST_DETAIL) {
|
|
int i;
|
|
|
|
for (i = 0; i < specs->modedb_len; i++) {
|
|
if (specs->modedb[i].flag & FB_MODE_IS_FIRST) {
|
|
modedb = &specs->modedb[i];
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
info->var.bits_per_pixel = default_bpp;
|
|
fb_videomode_to_var(&info->var, modedb);
|
|
}
|
|
|
|
pr_debug("xres_virtual %d\n", info->var.xres_virtual);
|
|
pr_debug("bits_per_pixel %d\n", info->var.bits_per_pixel);
|
|
|
|
pr_debug("info->var.yres_virtual = %d\n", info->var.yres_virtual);
|
|
pr_debug("info->fix.line_length = %d\n", info->fix.line_length);
|
|
|
|
if (mfbi->type == MFB_TYPE_OFF)
|
|
mfbi->blank = FB_BLANK_NORMAL;
|
|
else
|
|
mfbi->blank = FB_BLANK_UNBLANK;
|
|
|
|
if (fsl_diu_check_var(&info->var, info)) {
|
|
printk(KERN_ERR "fb_check_var failed");
|
|
fb_dealloc_cmap(&info->cmap);
|
|
return -EINVAL;
|
|
}
|
|
|
|
if (register_framebuffer(info) < 0) {
|
|
printk(KERN_ERR "register_framebuffer failed");
|
|
unmap_video_memory(info);
|
|
fb_dealloc_cmap(&info->cmap);
|
|
return -EINVAL;
|
|
}
|
|
|
|
mfbi->registered = 1;
|
|
printk(KERN_INFO "fb%d: %s fb device registered successfully.\n",
|
|
info->node, info->fix.id);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void uninstall_fb(struct fb_info *info)
|
|
{
|
|
struct mfb_info *mfbi = info->par;
|
|
|
|
if (!mfbi->registered)
|
|
return;
|
|
|
|
if (mfbi->index == 0)
|
|
kfree(mfbi->edid_data);
|
|
|
|
unregister_framebuffer(info);
|
|
unmap_video_memory(info);
|
|
if (&info->cmap)
|
|
fb_dealloc_cmap(&info->cmap);
|
|
|
|
mfbi->registered = 0;
|
|
}
|
|
|
|
static irqreturn_t fsl_diu_isr(int irq, void *dev_id)
|
|
{
|
|
struct diu *hw = dr.diu_reg;
|
|
unsigned int status = in_be32(&hw->int_status);
|
|
|
|
if (status) {
|
|
/* This is the workaround for underrun */
|
|
if (status & INT_UNDRUN) {
|
|
out_be32(&hw->diu_mode, 0);
|
|
pr_debug("Err: DIU occurs underrun!\n");
|
|
udelay(1);
|
|
out_be32(&hw->diu_mode, 1);
|
|
}
|
|
#if defined(CONFIG_NOT_COHERENT_CACHE)
|
|
else if (status & INT_VSYNC) {
|
|
unsigned int i;
|
|
for (i = 0; i < coherence_data_size;
|
|
i += d_cache_line_size)
|
|
__asm__ __volatile__ (
|
|
"dcbz 0, %[input]"
|
|
::[input]"r"(&coherence_data[i]));
|
|
}
|
|
#endif
|
|
return IRQ_HANDLED;
|
|
}
|
|
return IRQ_NONE;
|
|
}
|
|
|
|
static int request_irq_local(int irq)
|
|
{
|
|
unsigned long status, ints;
|
|
struct diu *hw;
|
|
int ret;
|
|
|
|
hw = dr.diu_reg;
|
|
|
|
/* Read to clear the status */
|
|
status = in_be32(&hw->int_status);
|
|
|
|
ret = request_irq(irq, fsl_diu_isr, 0, "diu", NULL);
|
|
if (ret)
|
|
pr_info("Request diu IRQ failed.\n");
|
|
else {
|
|
ints = INT_PARERR | INT_LS_BF_VS;
|
|
#if !defined(CONFIG_NOT_COHERENT_CACHE)
|
|
ints |= INT_VSYNC;
|
|
#endif
|
|
if (dr.mode == MFB_MODE2 || dr.mode == MFB_MODE3)
|
|
ints |= INT_VSYNC_WB;
|
|
|
|
/* Read to clear the status */
|
|
status = in_be32(&hw->int_status);
|
|
out_be32(&hw->int_mask, ints);
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
static void free_irq_local(int irq)
|
|
{
|
|
struct diu *hw = dr.diu_reg;
|
|
|
|
/* Disable all LCDC interrupt */
|
|
out_be32(&hw->int_mask, 0x1f);
|
|
|
|
free_irq(irq, NULL);
|
|
}
|
|
|
|
#ifdef CONFIG_PM
|
|
/*
|
|
* Power management hooks. Note that we won't be called from IRQ context,
|
|
* unlike the blank functions above, so we may sleep.
|
|
*/
|
|
static int fsl_diu_suspend(struct platform_device *ofdev, pm_message_t state)
|
|
{
|
|
struct fsl_diu_data *machine_data;
|
|
|
|
machine_data = dev_get_drvdata(&ofdev->dev);
|
|
disable_lcdc(machine_data->fsl_diu_info[0]);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int fsl_diu_resume(struct platform_device *ofdev)
|
|
{
|
|
struct fsl_diu_data *machine_data;
|
|
|
|
machine_data = dev_get_drvdata(&ofdev->dev);
|
|
enable_lcdc(machine_data->fsl_diu_info[0]);
|
|
|
|
return 0;
|
|
}
|
|
|
|
#else
|
|
#define fsl_diu_suspend NULL
|
|
#define fsl_diu_resume NULL
|
|
#endif /* CONFIG_PM */
|
|
|
|
/* Align to 64-bit(8-byte), 32-byte, etc. */
|
|
static int allocate_buf(struct device *dev, struct diu_addr *buf, u32 size,
|
|
u32 bytes_align)
|
|
{
|
|
u32 offset, ssize;
|
|
u32 mask;
|
|
dma_addr_t paddr = 0;
|
|
|
|
ssize = size + bytes_align;
|
|
buf->vaddr = dma_alloc_coherent(dev, ssize, &paddr, GFP_DMA |
|
|
__GFP_ZERO);
|
|
if (!buf->vaddr)
|
|
return -ENOMEM;
|
|
|
|
buf->paddr = (__u32) paddr;
|
|
|
|
mask = bytes_align - 1;
|
|
offset = (u32)buf->paddr & mask;
|
|
if (offset) {
|
|
buf->offset = bytes_align - offset;
|
|
buf->paddr = (u32)buf->paddr + offset;
|
|
} else
|
|
buf->offset = 0;
|
|
return 0;
|
|
}
|
|
|
|
static void free_buf(struct device *dev, struct diu_addr *buf, u32 size,
|
|
u32 bytes_align)
|
|
{
|
|
dma_free_coherent(dev, size + bytes_align,
|
|
buf->vaddr, (buf->paddr - buf->offset));
|
|
return;
|
|
}
|
|
|
|
static ssize_t store_monitor(struct device *device,
|
|
struct device_attribute *attr, const char *buf, size_t count)
|
|
{
|
|
int old_monitor_port;
|
|
unsigned long val;
|
|
struct fsl_diu_data *machine_data =
|
|
container_of(attr, struct fsl_diu_data, dev_attr);
|
|
|
|
if (strict_strtoul(buf, 10, &val))
|
|
return 0;
|
|
|
|
old_monitor_port = machine_data->monitor_port;
|
|
machine_data->monitor_port = diu_ops.set_sysfs_monitor_port(val);
|
|
|
|
if (old_monitor_port != machine_data->monitor_port) {
|
|
/* All AOIs need adjust pixel format
|
|
* fsl_diu_set_par only change the pixsel format here
|
|
* unlikely to fail. */
|
|
fsl_diu_set_par(machine_data->fsl_diu_info[0]);
|
|
fsl_diu_set_par(machine_data->fsl_diu_info[1]);
|
|
fsl_diu_set_par(machine_data->fsl_diu_info[2]);
|
|
fsl_diu_set_par(machine_data->fsl_diu_info[3]);
|
|
fsl_diu_set_par(machine_data->fsl_diu_info[4]);
|
|
}
|
|
return count;
|
|
}
|
|
|
|
static ssize_t show_monitor(struct device *device,
|
|
struct device_attribute *attr, char *buf)
|
|
{
|
|
struct fsl_diu_data *machine_data =
|
|
container_of(attr, struct fsl_diu_data, dev_attr);
|
|
return diu_ops.show_monitor_port(machine_data->monitor_port, buf);
|
|
}
|
|
|
|
static int __devinit fsl_diu_probe(struct platform_device *ofdev)
|
|
{
|
|
struct device_node *np = ofdev->dev.of_node;
|
|
struct mfb_info *mfbi;
|
|
phys_addr_t dummy_ad_addr;
|
|
int ret, i, error = 0;
|
|
struct resource res;
|
|
struct fsl_diu_data *machine_data;
|
|
int diu_mode;
|
|
|
|
machine_data = kzalloc(sizeof(struct fsl_diu_data), GFP_KERNEL);
|
|
if (!machine_data)
|
|
return -ENOMEM;
|
|
|
|
for (i = 0; i < ARRAY_SIZE(machine_data->fsl_diu_info); i++) {
|
|
machine_data->fsl_diu_info[i] =
|
|
framebuffer_alloc(sizeof(struct mfb_info), &ofdev->dev);
|
|
if (!machine_data->fsl_diu_info[i]) {
|
|
dev_err(&ofdev->dev, "cannot allocate memory\n");
|
|
ret = -ENOMEM;
|
|
goto error2;
|
|
}
|
|
mfbi = machine_data->fsl_diu_info[i]->par;
|
|
memcpy(mfbi, &mfb_template[i], sizeof(struct mfb_info));
|
|
mfbi->parent = machine_data;
|
|
|
|
if (mfbi->index == 0) {
|
|
const u8 *prop;
|
|
int len;
|
|
|
|
/* Get EDID */
|
|
prop = of_get_property(np, "edid", &len);
|
|
if (prop && len == EDID_LENGTH)
|
|
mfbi->edid_data = kmemdup(prop, EDID_LENGTH,
|
|
GFP_KERNEL);
|
|
}
|
|
}
|
|
|
|
ret = of_address_to_resource(np, 0, &res);
|
|
if (ret) {
|
|
dev_err(&ofdev->dev, "could not obtain DIU address\n");
|
|
goto error;
|
|
}
|
|
if (!res.start) {
|
|
dev_err(&ofdev->dev, "invalid DIU address\n");
|
|
goto error;
|
|
}
|
|
dev_dbg(&ofdev->dev, "%s, res.start: 0x%08x\n", __func__, res.start);
|
|
|
|
dr.diu_reg = ioremap(res.start, sizeof(struct diu));
|
|
if (!dr.diu_reg) {
|
|
dev_err(&ofdev->dev, "Err: can't map DIU registers!\n");
|
|
ret = -EFAULT;
|
|
goto error2;
|
|
}
|
|
|
|
diu_mode = in_be32(&dr.diu_reg->diu_mode);
|
|
if (diu_mode != MFB_MODE1)
|
|
out_be32(&dr.diu_reg->diu_mode, 0); /* disable DIU */
|
|
|
|
/* Get the IRQ of the DIU */
|
|
machine_data->irq = irq_of_parse_and_map(np, 0);
|
|
|
|
if (!machine_data->irq) {
|
|
dev_err(&ofdev->dev, "could not get DIU IRQ\n");
|
|
ret = -EINVAL;
|
|
goto error;
|
|
}
|
|
machine_data->monitor_port = monitor_port;
|
|
|
|
/* Area descriptor memory pool aligns to 64-bit boundary */
|
|
if (allocate_buf(&ofdev->dev, &pool.ad,
|
|
sizeof(struct diu_ad) * FSL_AOI_NUM, 8))
|
|
return -ENOMEM;
|
|
|
|
/* Get memory for Gamma Table - 32-byte aligned memory */
|
|
if (allocate_buf(&ofdev->dev, &pool.gamma, 768, 32)) {
|
|
ret = -ENOMEM;
|
|
goto error;
|
|
}
|
|
|
|
/* For performance, cursor bitmap buffer aligns to 32-byte boundary */
|
|
if (allocate_buf(&ofdev->dev, &pool.cursor, MAX_CURS * MAX_CURS * 2,
|
|
32)) {
|
|
ret = -ENOMEM;
|
|
goto error;
|
|
}
|
|
|
|
i = ARRAY_SIZE(machine_data->fsl_diu_info);
|
|
machine_data->dummy_ad = (struct diu_ad *)
|
|
((u32)pool.ad.vaddr + pool.ad.offset) + i;
|
|
machine_data->dummy_ad->paddr = pool.ad.paddr +
|
|
i * sizeof(struct diu_ad);
|
|
machine_data->dummy_aoi_virt = fsl_diu_alloc(64, &dummy_ad_addr);
|
|
if (!machine_data->dummy_aoi_virt) {
|
|
ret = -ENOMEM;
|
|
goto error;
|
|
}
|
|
machine_data->dummy_ad->addr = cpu_to_le32(dummy_ad_addr);
|
|
machine_data->dummy_ad->pix_fmt = 0x88882317;
|
|
machine_data->dummy_ad->src_size_g_alpha = cpu_to_le32((4 << 12) | 4);
|
|
machine_data->dummy_ad->aoi_size = cpu_to_le32((4 << 16) | 2);
|
|
machine_data->dummy_ad->offset_xyi = 0;
|
|
machine_data->dummy_ad->offset_xyd = 0;
|
|
machine_data->dummy_ad->next_ad = 0;
|
|
|
|
/*
|
|
* Let DIU display splash screen if it was pre-initialized
|
|
* by the bootloader, set dummy area descriptor otherwise.
|
|
*/
|
|
if (diu_mode != MFB_MODE1)
|
|
out_be32(&dr.diu_reg->desc[0], machine_data->dummy_ad->paddr);
|
|
|
|
out_be32(&dr.diu_reg->desc[1], machine_data->dummy_ad->paddr);
|
|
out_be32(&dr.diu_reg->desc[2], machine_data->dummy_ad->paddr);
|
|
|
|
for (i = 0; i < ARRAY_SIZE(machine_data->fsl_diu_info); i++) {
|
|
machine_data->fsl_diu_info[i]->fix.smem_start = 0;
|
|
mfbi = machine_data->fsl_diu_info[i]->par;
|
|
mfbi->ad = (struct diu_ad *)((u32)pool.ad.vaddr
|
|
+ pool.ad.offset) + i;
|
|
mfbi->ad->paddr = pool.ad.paddr + i * sizeof(struct diu_ad);
|
|
ret = install_fb(machine_data->fsl_diu_info[i]);
|
|
if (ret) {
|
|
dev_err(&ofdev->dev,
|
|
"Failed to register framebuffer %d\n",
|
|
i);
|
|
goto error;
|
|
}
|
|
}
|
|
|
|
if (request_irq_local(machine_data->irq)) {
|
|
dev_err(machine_data->fsl_diu_info[0]->dev,
|
|
"could not request irq for diu.");
|
|
goto error;
|
|
}
|
|
|
|
sysfs_attr_init(&machine_data->dev_attr.attr);
|
|
machine_data->dev_attr.attr.name = "monitor";
|
|
machine_data->dev_attr.attr.mode = S_IRUGO|S_IWUSR;
|
|
machine_data->dev_attr.show = show_monitor;
|
|
machine_data->dev_attr.store = store_monitor;
|
|
error = device_create_file(machine_data->fsl_diu_info[0]->dev,
|
|
&machine_data->dev_attr);
|
|
if (error) {
|
|
dev_err(machine_data->fsl_diu_info[0]->dev,
|
|
"could not create sysfs %s file\n",
|
|
machine_data->dev_attr.attr.name);
|
|
}
|
|
|
|
dev_set_drvdata(&ofdev->dev, machine_data);
|
|
return 0;
|
|
|
|
error:
|
|
for (i = ARRAY_SIZE(machine_data->fsl_diu_info);
|
|
i > 0; i--)
|
|
uninstall_fb(machine_data->fsl_diu_info[i - 1]);
|
|
if (pool.ad.vaddr)
|
|
free_buf(&ofdev->dev, &pool.ad,
|
|
sizeof(struct diu_ad) * FSL_AOI_NUM, 8);
|
|
if (pool.gamma.vaddr)
|
|
free_buf(&ofdev->dev, &pool.gamma, 768, 32);
|
|
if (pool.cursor.vaddr)
|
|
free_buf(&ofdev->dev, &pool.cursor, MAX_CURS * MAX_CURS * 2,
|
|
32);
|
|
if (machine_data->dummy_aoi_virt)
|
|
fsl_diu_free(machine_data->dummy_aoi_virt, 64);
|
|
iounmap(dr.diu_reg);
|
|
|
|
error2:
|
|
for (i = 0; i < ARRAY_SIZE(machine_data->fsl_diu_info); i++)
|
|
if (machine_data->fsl_diu_info[i])
|
|
framebuffer_release(machine_data->fsl_diu_info[i]);
|
|
kfree(machine_data);
|
|
|
|
return ret;
|
|
}
|
|
|
|
|
|
static int fsl_diu_remove(struct platform_device *ofdev)
|
|
{
|
|
struct fsl_diu_data *machine_data;
|
|
int i;
|
|
|
|
machine_data = dev_get_drvdata(&ofdev->dev);
|
|
disable_lcdc(machine_data->fsl_diu_info[0]);
|
|
free_irq_local(machine_data->irq);
|
|
for (i = ARRAY_SIZE(machine_data->fsl_diu_info); i > 0; i--)
|
|
uninstall_fb(machine_data->fsl_diu_info[i - 1]);
|
|
if (pool.ad.vaddr)
|
|
free_buf(&ofdev->dev, &pool.ad,
|
|
sizeof(struct diu_ad) * FSL_AOI_NUM, 8);
|
|
if (pool.gamma.vaddr)
|
|
free_buf(&ofdev->dev, &pool.gamma, 768, 32);
|
|
if (pool.cursor.vaddr)
|
|
free_buf(&ofdev->dev, &pool.cursor, MAX_CURS * MAX_CURS * 2,
|
|
32);
|
|
if (machine_data->dummy_aoi_virt)
|
|
fsl_diu_free(machine_data->dummy_aoi_virt, 64);
|
|
iounmap(dr.diu_reg);
|
|
for (i = 0; i < ARRAY_SIZE(machine_data->fsl_diu_info); i++)
|
|
if (machine_data->fsl_diu_info[i])
|
|
framebuffer_release(machine_data->fsl_diu_info[i]);
|
|
kfree(machine_data);
|
|
|
|
return 0;
|
|
}
|
|
|
|
#ifndef MODULE
|
|
static int __init fsl_diu_setup(char *options)
|
|
{
|
|
char *opt;
|
|
unsigned long val;
|
|
|
|
if (!options || !*options)
|
|
return 0;
|
|
|
|
while ((opt = strsep(&options, ",")) != NULL) {
|
|
if (!*opt)
|
|
continue;
|
|
if (!strncmp(opt, "monitor=", 8)) {
|
|
if (!strict_strtoul(opt + 8, 10, &val) && (val <= 2))
|
|
monitor_port = val;
|
|
} else if (!strncmp(opt, "bpp=", 4)) {
|
|
if (!strict_strtoul(opt + 4, 10, &val))
|
|
default_bpp = val;
|
|
} else
|
|
fb_mode = opt;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
#endif
|
|
|
|
static struct of_device_id fsl_diu_match[] = {
|
|
#ifdef CONFIG_PPC_MPC512x
|
|
{
|
|
.compatible = "fsl,mpc5121-diu",
|
|
},
|
|
#endif
|
|
{
|
|
.compatible = "fsl,diu",
|
|
},
|
|
{}
|
|
};
|
|
MODULE_DEVICE_TABLE(of, fsl_diu_match);
|
|
|
|
static struct platform_driver fsl_diu_driver = {
|
|
.driver = {
|
|
.name = "fsl_diu",
|
|
.owner = THIS_MODULE,
|
|
.of_match_table = fsl_diu_match,
|
|
},
|
|
.probe = fsl_diu_probe,
|
|
.remove = fsl_diu_remove,
|
|
.suspend = fsl_diu_suspend,
|
|
.resume = fsl_diu_resume,
|
|
};
|
|
|
|
static int __init fsl_diu_init(void)
|
|
{
|
|
#ifdef CONFIG_NOT_COHERENT_CACHE
|
|
struct device_node *np;
|
|
const u32 *prop;
|
|
#endif
|
|
int ret;
|
|
#ifndef MODULE
|
|
char *option;
|
|
|
|
/*
|
|
* For kernel boot options (in 'video=xxxfb:<options>' format)
|
|
*/
|
|
if (fb_get_options("fslfb", &option))
|
|
return -ENODEV;
|
|
fsl_diu_setup(option);
|
|
#endif
|
|
printk(KERN_INFO "Freescale DIU driver\n");
|
|
|
|
#ifdef CONFIG_NOT_COHERENT_CACHE
|
|
np = of_find_node_by_type(NULL, "cpu");
|
|
if (!np) {
|
|
printk(KERN_ERR "Err: can't find device node 'cpu'\n");
|
|
return -ENODEV;
|
|
}
|
|
|
|
prop = of_get_property(np, "d-cache-size", NULL);
|
|
if (prop == NULL) {
|
|
of_node_put(np);
|
|
return -ENODEV;
|
|
}
|
|
|
|
/* Freescale PLRU requires 13/8 times the cache size to do a proper
|
|
displacement flush
|
|
*/
|
|
coherence_data_size = *prop * 13;
|
|
coherence_data_size /= 8;
|
|
|
|
prop = of_get_property(np, "d-cache-line-size", NULL);
|
|
if (prop == NULL) {
|
|
of_node_put(np);
|
|
return -ENODEV;
|
|
}
|
|
d_cache_line_size = *prop;
|
|
|
|
of_node_put(np);
|
|
coherence_data = vmalloc(coherence_data_size);
|
|
if (!coherence_data)
|
|
return -ENOMEM;
|
|
#endif
|
|
ret = platform_driver_register(&fsl_diu_driver);
|
|
if (ret) {
|
|
printk(KERN_ERR
|
|
"fsl-diu: failed to register platform driver\n");
|
|
#if defined(CONFIG_NOT_COHERENT_CACHE)
|
|
vfree(coherence_data);
|
|
#endif
|
|
iounmap(dr.diu_reg);
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
static void __exit fsl_diu_exit(void)
|
|
{
|
|
platform_driver_unregister(&fsl_diu_driver);
|
|
#if defined(CONFIG_NOT_COHERENT_CACHE)
|
|
vfree(coherence_data);
|
|
#endif
|
|
}
|
|
|
|
module_init(fsl_diu_init);
|
|
module_exit(fsl_diu_exit);
|
|
|
|
MODULE_AUTHOR("York Sun <yorksun@freescale.com>");
|
|
MODULE_DESCRIPTION("Freescale DIU framebuffer driver");
|
|
MODULE_LICENSE("GPL");
|
|
|
|
module_param_named(mode, fb_mode, charp, 0);
|
|
MODULE_PARM_DESC(mode,
|
|
"Specify resolution as \"<xres>x<yres>[-<bpp>][@<refresh>]\" ");
|
|
module_param_named(bpp, default_bpp, ulong, 0);
|
|
MODULE_PARM_DESC(bpp, "Specify bit-per-pixel if not specified mode");
|
|
module_param_named(monitor, monitor_port, int, 0);
|
|
MODULE_PARM_DESC(monitor,
|
|
"Specify the monitor port (0, 1 or 2) if supported by the platform");
|
|
|