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![Joe Perches](/assets/img/avatar_default.png)
Neaten and shorten the code using the new fb_<level> macros. Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
889 lines
23 KiB
C
889 lines
23 KiB
C
/*
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* linux/drivers/video/sgivwfb.c -- SGI DBE frame buffer device
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*
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* Copyright (C) 1999 Silicon Graphics, Inc.
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* Jeffrey Newquist, newquist@engr.sgi.som
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*
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* This file is subject to the terms and conditions of the GNU General Public
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* License. See the file COPYING in the main directory of this archive for
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* more details.
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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/mm.h>
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#include <linux/errno.h>
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#include <linux/delay.h>
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#include <linux/fb.h>
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#include <linux/init.h>
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#include <linux/ioport.h>
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#include <linux/platform_device.h>
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#include <asm/io.h>
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#include <asm/mtrr.h>
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#include <asm/visws/sgivw.h>
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#define INCLUDE_TIMING_TABLE_DATA
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#define DBE_REG_BASE par->regs
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#include <video/sgivw.h>
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struct sgivw_par {
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struct asregs *regs;
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u32 cmap_fifo;
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u_long timing_num;
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};
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#define FLATPANEL_SGI_1600SW 5
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/*
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* RAM we reserve for the frame buffer. This defines the maximum screen
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* size
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*
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* The default can be overridden if the driver is compiled as a module
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*/
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static int ypan = 0;
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static int ywrap = 0;
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static int flatpanel_id = -1;
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static struct fb_fix_screeninfo sgivwfb_fix = {
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.id = "SGI Vis WS FB",
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.type = FB_TYPE_PACKED_PIXELS,
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.visual = FB_VISUAL_PSEUDOCOLOR,
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.mmio_start = DBE_REG_PHYS,
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.mmio_len = DBE_REG_SIZE,
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.accel = FB_ACCEL_NONE,
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.line_length = 640,
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};
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static struct fb_var_screeninfo sgivwfb_var = {
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/* 640x480, 8 bpp */
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.xres = 640,
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.yres = 480,
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.xres_virtual = 640,
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.yres_virtual = 480,
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.bits_per_pixel = 8,
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.red = { 0, 8, 0 },
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.green = { 0, 8, 0 },
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.blue = { 0, 8, 0 },
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.height = -1,
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.width = -1,
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.pixclock = 20000,
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.left_margin = 64,
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.right_margin = 64,
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.upper_margin = 32,
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.lower_margin = 32,
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.hsync_len = 64,
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.vsync_len = 2,
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.vmode = FB_VMODE_NONINTERLACED
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};
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static struct fb_var_screeninfo sgivwfb_var1600sw = {
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/* 1600x1024, 8 bpp */
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.xres = 1600,
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.yres = 1024,
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.xres_virtual = 1600,
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.yres_virtual = 1024,
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.bits_per_pixel = 8,
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.red = { 0, 8, 0 },
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.green = { 0, 8, 0 },
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.blue = { 0, 8, 0 },
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.height = -1,
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.width = -1,
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.pixclock = 9353,
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.left_margin = 20,
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.right_margin = 30,
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.upper_margin = 37,
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.lower_margin = 3,
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.hsync_len = 20,
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.vsync_len = 3,
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.vmode = FB_VMODE_NONINTERLACED
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};
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/*
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* Interface used by the world
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*/
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int sgivwfb_init(void);
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static int sgivwfb_check_var(struct fb_var_screeninfo *var, struct fb_info *info);
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static int sgivwfb_set_par(struct fb_info *info);
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static int sgivwfb_setcolreg(u_int regno, u_int red, u_int green,
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u_int blue, u_int transp,
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struct fb_info *info);
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static int sgivwfb_mmap(struct fb_info *info,
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struct vm_area_struct *vma);
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static struct fb_ops sgivwfb_ops = {
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.owner = THIS_MODULE,
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.fb_check_var = sgivwfb_check_var,
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.fb_set_par = sgivwfb_set_par,
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.fb_setcolreg = sgivwfb_setcolreg,
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.fb_fillrect = cfb_fillrect,
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.fb_copyarea = cfb_copyarea,
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.fb_imageblit = cfb_imageblit,
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.fb_mmap = sgivwfb_mmap,
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};
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/*
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* Internal routines
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*/
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static unsigned long bytes_per_pixel(int bpp)
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{
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switch (bpp) {
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case 8:
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return 1;
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case 16:
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return 2;
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case 32:
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return 4;
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default:
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printk(KERN_INFO "sgivwfb: unsupported bpp %d\n", bpp);
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return 0;
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}
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}
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static unsigned long get_line_length(int xres_virtual, int bpp)
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{
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return (xres_virtual * bytes_per_pixel(bpp));
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}
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/*
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* Function: dbe_TurnOffDma
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* Parameters: (None)
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* Description: This should turn off the monitor and dbe. This is used
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* when switching between the serial console and the graphics
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* console.
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*/
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static void dbe_TurnOffDma(struct sgivw_par *par)
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{
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unsigned int readVal;
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int i;
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// Check to see if things are already turned off:
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// 1) Check to see if dbe is not using the internal dotclock.
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// 2) Check to see if the xy counter in dbe is already off.
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DBE_GETREG(ctrlstat, readVal);
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if (GET_DBE_FIELD(CTRLSTAT, PCLKSEL, readVal) < 2)
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return;
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DBE_GETREG(vt_xy, readVal);
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if (GET_DBE_FIELD(VT_XY, VT_FREEZE, readVal) == 1)
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return;
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// Otherwise, turn off dbe
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DBE_GETREG(ovr_control, readVal);
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SET_DBE_FIELD(OVR_CONTROL, OVR_DMA_ENABLE, readVal, 0);
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DBE_SETREG(ovr_control, readVal);
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udelay(1000);
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DBE_GETREG(frm_control, readVal);
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SET_DBE_FIELD(FRM_CONTROL, FRM_DMA_ENABLE, readVal, 0);
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DBE_SETREG(frm_control, readVal);
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udelay(1000);
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DBE_GETREG(did_control, readVal);
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SET_DBE_FIELD(DID_CONTROL, DID_DMA_ENABLE, readVal, 0);
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DBE_SETREG(did_control, readVal);
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udelay(1000);
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// XXX HACK:
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//
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// This was necessary for GBE--we had to wait through two
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// vertical retrace periods before the pixel DMA was
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// turned off for sure. I've left this in for now, in
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// case dbe needs it.
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for (i = 0; i < 10000; i++) {
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DBE_GETREG(frm_inhwctrl, readVal);
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if (GET_DBE_FIELD(FRM_INHWCTRL, FRM_DMA_ENABLE, readVal) ==
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0)
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udelay(10);
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else {
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DBE_GETREG(ovr_inhwctrl, readVal);
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if (GET_DBE_FIELD
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(OVR_INHWCTRL, OVR_DMA_ENABLE, readVal) == 0)
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udelay(10);
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else {
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DBE_GETREG(did_inhwctrl, readVal);
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if (GET_DBE_FIELD
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(DID_INHWCTRL, DID_DMA_ENABLE,
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readVal) == 0)
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udelay(10);
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else
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break;
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}
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}
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}
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}
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/*
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* Set the User Defined Part of the Display. Again if par use it to get
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* real video mode.
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*/
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static int sgivwfb_check_var(struct fb_var_screeninfo *var,
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struct fb_info *info)
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{
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struct sgivw_par *par = (struct sgivw_par *)info->par;
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struct dbe_timing_info *timing;
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u_long line_length;
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u_long min_mode;
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int req_dot;
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int test_mode;
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/*
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* FB_VMODE_CONUPDATE and FB_VMODE_SMOOTH_XPAN are equal!
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* as FB_VMODE_SMOOTH_XPAN is only used internally
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*/
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if (var->vmode & FB_VMODE_CONUPDATE) {
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var->vmode |= FB_VMODE_YWRAP;
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var->xoffset = info->var.xoffset;
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var->yoffset = info->var.yoffset;
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}
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/* XXX FIXME - forcing var's */
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var->xoffset = 0;
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var->yoffset = 0;
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/* Limit bpp to 8, 16, and 32 */
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if (var->bits_per_pixel <= 8)
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var->bits_per_pixel = 8;
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else if (var->bits_per_pixel <= 16)
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var->bits_per_pixel = 16;
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else if (var->bits_per_pixel <= 32)
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var->bits_per_pixel = 32;
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else
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return -EINVAL;
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var->grayscale = 0; /* No grayscale for now */
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/* determine valid resolution and timing */
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for (min_mode = 0; min_mode < ARRAY_SIZE(dbeVTimings); min_mode++) {
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if (dbeVTimings[min_mode].width >= var->xres &&
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dbeVTimings[min_mode].height >= var->yres)
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break;
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}
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if (min_mode == ARRAY_SIZE(dbeVTimings))
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return -EINVAL; /* Resolution to high */
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/* XXX FIXME - should try to pick best refresh rate */
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/* for now, pick closest dot-clock within 3MHz */
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req_dot = PICOS2KHZ(var->pixclock);
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printk(KERN_INFO "sgivwfb: requested pixclock=%d ps (%d KHz)\n",
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var->pixclock, req_dot);
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test_mode = min_mode;
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while (dbeVTimings[min_mode].width == dbeVTimings[test_mode].width) {
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if (dbeVTimings[test_mode].cfreq + 3000 > req_dot)
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break;
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test_mode++;
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}
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if (dbeVTimings[min_mode].width != dbeVTimings[test_mode].width)
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test_mode--;
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min_mode = test_mode;
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timing = &dbeVTimings[min_mode];
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printk(KERN_INFO "sgivwfb: granted dot-clock=%d KHz\n", timing->cfreq);
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/* Adjust virtual resolution, if necessary */
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if (var->xres > var->xres_virtual || (!ywrap && !ypan))
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var->xres_virtual = var->xres;
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if (var->yres > var->yres_virtual || (!ywrap && !ypan))
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var->yres_virtual = var->yres;
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/*
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* Memory limit
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*/
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line_length = get_line_length(var->xres_virtual, var->bits_per_pixel);
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if (line_length * var->yres_virtual > sgivwfb_mem_size)
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return -ENOMEM; /* Virtual resolution to high */
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info->fix.line_length = line_length;
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switch (var->bits_per_pixel) {
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case 8:
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var->red.offset = 0;
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var->red.length = 8;
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var->green.offset = 0;
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var->green.length = 8;
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var->blue.offset = 0;
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var->blue.length = 8;
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var->transp.offset = 0;
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var->transp.length = 0;
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break;
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case 16: /* RGBA 5551 */
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var->red.offset = 11;
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var->red.length = 5;
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var->green.offset = 6;
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var->green.length = 5;
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var->blue.offset = 1;
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var->blue.length = 5;
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var->transp.offset = 0;
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var->transp.length = 0;
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break;
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case 32: /* RGB 8888 */
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var->red.offset = 0;
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var->red.length = 8;
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var->green.offset = 8;
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var->green.length = 8;
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var->blue.offset = 16;
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var->blue.length = 8;
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var->transp.offset = 24;
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var->transp.length = 8;
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break;
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}
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var->red.msb_right = 0;
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var->green.msb_right = 0;
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var->blue.msb_right = 0;
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var->transp.msb_right = 0;
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/* set video timing information */
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var->pixclock = KHZ2PICOS(timing->cfreq);
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var->left_margin = timing->htotal - timing->hsync_end;
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var->right_margin = timing->hsync_start - timing->width;
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var->upper_margin = timing->vtotal - timing->vsync_end;
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var->lower_margin = timing->vsync_start - timing->height;
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var->hsync_len = timing->hsync_end - timing->hsync_start;
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var->vsync_len = timing->vsync_end - timing->vsync_start;
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/* Ouch. This breaks the rules but timing_num is only important if you
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* change a video mode */
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par->timing_num = min_mode;
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printk(KERN_INFO "sgivwfb: new video mode xres=%d yres=%d bpp=%d\n",
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var->xres, var->yres, var->bits_per_pixel);
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printk(KERN_INFO " vxres=%d vyres=%d\n", var->xres_virtual,
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var->yres_virtual);
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return 0;
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}
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/*
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* Setup flatpanel related registers.
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*/
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static void sgivwfb_setup_flatpanel(struct sgivw_par *par, struct dbe_timing_info *currentTiming)
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{
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int fp_wid, fp_hgt, fp_vbs, fp_vbe;
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u32 outputVal = 0;
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SET_DBE_FIELD(VT_FLAGS, HDRV_INVERT, outputVal,
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(currentTiming->flags & FB_SYNC_HOR_HIGH_ACT) ? 0 : 1);
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SET_DBE_FIELD(VT_FLAGS, VDRV_INVERT, outputVal,
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(currentTiming->flags & FB_SYNC_VERT_HIGH_ACT) ? 0 : 1);
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DBE_SETREG(vt_flags, outputVal);
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/* Turn on the flat panel */
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switch (flatpanel_id) {
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case FLATPANEL_SGI_1600SW:
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fp_wid = 1600;
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fp_hgt = 1024;
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fp_vbs = 0;
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fp_vbe = 1600;
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currentTiming->pll_m = 4;
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currentTiming->pll_n = 1;
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currentTiming->pll_p = 0;
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break;
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default:
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fp_wid = fp_hgt = fp_vbs = fp_vbe = 0xfff;
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}
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outputVal = 0;
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SET_DBE_FIELD(FP_DE, FP_DE_ON, outputVal, fp_vbs);
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SET_DBE_FIELD(FP_DE, FP_DE_OFF, outputVal, fp_vbe);
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DBE_SETREG(fp_de, outputVal);
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outputVal = 0;
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SET_DBE_FIELD(FP_HDRV, FP_HDRV_OFF, outputVal, fp_wid);
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DBE_SETREG(fp_hdrv, outputVal);
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outputVal = 0;
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SET_DBE_FIELD(FP_VDRV, FP_VDRV_ON, outputVal, 1);
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SET_DBE_FIELD(FP_VDRV, FP_VDRV_OFF, outputVal, fp_hgt + 1);
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DBE_SETREG(fp_vdrv, outputVal);
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}
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/*
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* Set the hardware according to 'par'.
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*/
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static int sgivwfb_set_par(struct fb_info *info)
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{
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struct sgivw_par *par = info->par;
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int i, j, htmp, temp;
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u32 readVal, outputVal;
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int wholeTilesX, maxPixelsPerTileX;
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int frmWrite1, frmWrite2, frmWrite3b;
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struct dbe_timing_info *currentTiming; /* Current Video Timing */
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int xpmax, ypmax; // Monitor resolution
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int bytesPerPixel; // Bytes per pixel
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currentTiming = &dbeVTimings[par->timing_num];
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bytesPerPixel = bytes_per_pixel(info->var.bits_per_pixel);
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xpmax = currentTiming->width;
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ypmax = currentTiming->height;
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/* dbe_InitGraphicsBase(); */
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/* Turn on dotclock PLL */
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DBE_SETREG(ctrlstat, 0x20000000);
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dbe_TurnOffDma(par);
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/* dbe_CalculateScreenParams(); */
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maxPixelsPerTileX = 512 / bytesPerPixel;
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wholeTilesX = xpmax / maxPixelsPerTileX;
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if (wholeTilesX * maxPixelsPerTileX < xpmax)
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wholeTilesX++;
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printk(KERN_DEBUG "sgivwfb: pixPerTile=%d wholeTilesX=%d\n",
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maxPixelsPerTileX, wholeTilesX);
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/* dbe_InitGammaMap(); */
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udelay(10);
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for (i = 0; i < 256; i++) {
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DBE_ISETREG(gmap, i, (i << 24) | (i << 16) | (i << 8));
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}
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/* dbe_TurnOn(); */
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DBE_GETREG(vt_xy, readVal);
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if (GET_DBE_FIELD(VT_XY, VT_FREEZE, readVal) == 1) {
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DBE_SETREG(vt_xy, 0x00000000);
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udelay(1);
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} else
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dbe_TurnOffDma(par);
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/* dbe_Initdbe(); */
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for (i = 0; i < 256; i++) {
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for (j = 0; j < 100; j++) {
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DBE_GETREG(cm_fifo, readVal);
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if (readVal != 0x00000000)
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break;
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else
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udelay(10);
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}
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// DBE_ISETREG(cmap, i, 0x00000000);
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DBE_ISETREG(cmap, i, (i << 8) | (i << 16) | (i << 24));
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}
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/* dbe_InitFramebuffer(); */
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frmWrite1 = 0;
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SET_DBE_FIELD(FRM_SIZE_TILE, FRM_WIDTH_TILE, frmWrite1,
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wholeTilesX);
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SET_DBE_FIELD(FRM_SIZE_TILE, FRM_RHS, frmWrite1, 0);
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switch (bytesPerPixel) {
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case 1:
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SET_DBE_FIELD(FRM_SIZE_TILE, FRM_DEPTH, frmWrite1,
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DBE_FRM_DEPTH_8);
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break;
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case 2:
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SET_DBE_FIELD(FRM_SIZE_TILE, FRM_DEPTH, frmWrite1,
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DBE_FRM_DEPTH_16);
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break;
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case 4:
|
|
SET_DBE_FIELD(FRM_SIZE_TILE, FRM_DEPTH, frmWrite1,
|
|
DBE_FRM_DEPTH_32);
|
|
break;
|
|
}
|
|
|
|
frmWrite2 = 0;
|
|
SET_DBE_FIELD(FRM_SIZE_PIXEL, FB_HEIGHT_PIX, frmWrite2, ypmax);
|
|
|
|
// Tell dbe about the framebuffer location and type
|
|
// XXX What format is the FRM_TILE_PTR?? 64K aligned address?
|
|
frmWrite3b = 0;
|
|
SET_DBE_FIELD(FRM_CONTROL, FRM_TILE_PTR, frmWrite3b,
|
|
sgivwfb_mem_phys >> 9);
|
|
SET_DBE_FIELD(FRM_CONTROL, FRM_DMA_ENABLE, frmWrite3b, 1);
|
|
SET_DBE_FIELD(FRM_CONTROL, FRM_LINEAR, frmWrite3b, 1);
|
|
|
|
/* Initialize DIDs */
|
|
|
|
outputVal = 0;
|
|
switch (bytesPerPixel) {
|
|
case 1:
|
|
SET_DBE_FIELD(WID, TYP, outputVal, DBE_CMODE_I8);
|
|
break;
|
|
case 2:
|
|
SET_DBE_FIELD(WID, TYP, outputVal, DBE_CMODE_RGBA5);
|
|
break;
|
|
case 4:
|
|
SET_DBE_FIELD(WID, TYP, outputVal, DBE_CMODE_RGB8);
|
|
break;
|
|
}
|
|
SET_DBE_FIELD(WID, BUF, outputVal, DBE_BMODE_BOTH);
|
|
|
|
for (i = 0; i < 32; i++) {
|
|
DBE_ISETREG(mode_regs, i, outputVal);
|
|
}
|
|
|
|
/* dbe_InitTiming(); */
|
|
DBE_SETREG(vt_intr01, 0xffffffff);
|
|
DBE_SETREG(vt_intr23, 0xffffffff);
|
|
|
|
DBE_GETREG(dotclock, readVal);
|
|
DBE_SETREG(dotclock, readVal & 0xffff);
|
|
|
|
DBE_SETREG(vt_xymax, 0x00000000);
|
|
outputVal = 0;
|
|
SET_DBE_FIELD(VT_VSYNC, VT_VSYNC_ON, outputVal,
|
|
currentTiming->vsync_start);
|
|
SET_DBE_FIELD(VT_VSYNC, VT_VSYNC_OFF, outputVal,
|
|
currentTiming->vsync_end);
|
|
DBE_SETREG(vt_vsync, outputVal);
|
|
outputVal = 0;
|
|
SET_DBE_FIELD(VT_HSYNC, VT_HSYNC_ON, outputVal,
|
|
currentTiming->hsync_start);
|
|
SET_DBE_FIELD(VT_HSYNC, VT_HSYNC_OFF, outputVal,
|
|
currentTiming->hsync_end);
|
|
DBE_SETREG(vt_hsync, outputVal);
|
|
outputVal = 0;
|
|
SET_DBE_FIELD(VT_VBLANK, VT_VBLANK_ON, outputVal,
|
|
currentTiming->vblank_start);
|
|
SET_DBE_FIELD(VT_VBLANK, VT_VBLANK_OFF, outputVal,
|
|
currentTiming->vblank_end);
|
|
DBE_SETREG(vt_vblank, outputVal);
|
|
outputVal = 0;
|
|
SET_DBE_FIELD(VT_HBLANK, VT_HBLANK_ON, outputVal,
|
|
currentTiming->hblank_start);
|
|
SET_DBE_FIELD(VT_HBLANK, VT_HBLANK_OFF, outputVal,
|
|
currentTiming->hblank_end - 3);
|
|
DBE_SETREG(vt_hblank, outputVal);
|
|
outputVal = 0;
|
|
SET_DBE_FIELD(VT_VCMAP, VT_VCMAP_ON, outputVal,
|
|
currentTiming->vblank_start);
|
|
SET_DBE_FIELD(VT_VCMAP, VT_VCMAP_OFF, outputVal,
|
|
currentTiming->vblank_end);
|
|
DBE_SETREG(vt_vcmap, outputVal);
|
|
outputVal = 0;
|
|
SET_DBE_FIELD(VT_HCMAP, VT_HCMAP_ON, outputVal,
|
|
currentTiming->hblank_start);
|
|
SET_DBE_FIELD(VT_HCMAP, VT_HCMAP_OFF, outputVal,
|
|
currentTiming->hblank_end - 3);
|
|
DBE_SETREG(vt_hcmap, outputVal);
|
|
|
|
if (flatpanel_id != -1)
|
|
sgivwfb_setup_flatpanel(par, currentTiming);
|
|
|
|
outputVal = 0;
|
|
temp = currentTiming->vblank_start - currentTiming->vblank_end - 1;
|
|
if (temp > 0)
|
|
temp = -temp;
|
|
|
|
SET_DBE_FIELD(DID_START_XY, DID_STARTY, outputVal, (u32) temp);
|
|
if (currentTiming->hblank_end >= 20)
|
|
SET_DBE_FIELD(DID_START_XY, DID_STARTX, outputVal,
|
|
currentTiming->hblank_end - 20);
|
|
else
|
|
SET_DBE_FIELD(DID_START_XY, DID_STARTX, outputVal,
|
|
currentTiming->htotal - (20 -
|
|
currentTiming->
|
|
hblank_end));
|
|
DBE_SETREG(did_start_xy, outputVal);
|
|
|
|
outputVal = 0;
|
|
SET_DBE_FIELD(CRS_START_XY, CRS_STARTY, outputVal,
|
|
(u32) (temp + 1));
|
|
if (currentTiming->hblank_end >= DBE_CRS_MAGIC)
|
|
SET_DBE_FIELD(CRS_START_XY, CRS_STARTX, outputVal,
|
|
currentTiming->hblank_end - DBE_CRS_MAGIC);
|
|
else
|
|
SET_DBE_FIELD(CRS_START_XY, CRS_STARTX, outputVal,
|
|
currentTiming->htotal - (DBE_CRS_MAGIC -
|
|
currentTiming->
|
|
hblank_end));
|
|
DBE_SETREG(crs_start_xy, outputVal);
|
|
|
|
outputVal = 0;
|
|
SET_DBE_FIELD(VC_START_XY, VC_STARTY, outputVal, (u32) temp);
|
|
SET_DBE_FIELD(VC_START_XY, VC_STARTX, outputVal,
|
|
currentTiming->hblank_end - 4);
|
|
DBE_SETREG(vc_start_xy, outputVal);
|
|
|
|
DBE_SETREG(frm_size_tile, frmWrite1);
|
|
DBE_SETREG(frm_size_pixel, frmWrite2);
|
|
|
|
outputVal = 0;
|
|
SET_DBE_FIELD(DOTCLK, M, outputVal, currentTiming->pll_m - 1);
|
|
SET_DBE_FIELD(DOTCLK, N, outputVal, currentTiming->pll_n - 1);
|
|
SET_DBE_FIELD(DOTCLK, P, outputVal, currentTiming->pll_p);
|
|
SET_DBE_FIELD(DOTCLK, RUN, outputVal, 1);
|
|
DBE_SETREG(dotclock, outputVal);
|
|
|
|
udelay(11 * 1000);
|
|
|
|
DBE_SETREG(vt_vpixen, 0xffffff);
|
|
DBE_SETREG(vt_hpixen, 0xffffff);
|
|
|
|
outputVal = 0;
|
|
SET_DBE_FIELD(VT_XYMAX, VT_MAXX, outputVal, currentTiming->htotal);
|
|
SET_DBE_FIELD(VT_XYMAX, VT_MAXY, outputVal, currentTiming->vtotal);
|
|
DBE_SETREG(vt_xymax, outputVal);
|
|
|
|
outputVal = frmWrite1;
|
|
SET_DBE_FIELD(FRM_SIZE_TILE, FRM_FIFO_RESET, outputVal, 1);
|
|
DBE_SETREG(frm_size_tile, outputVal);
|
|
DBE_SETREG(frm_size_tile, frmWrite1);
|
|
|
|
outputVal = 0;
|
|
SET_DBE_FIELD(OVR_WIDTH_TILE, OVR_FIFO_RESET, outputVal, 1);
|
|
DBE_SETREG(ovr_width_tile, outputVal);
|
|
DBE_SETREG(ovr_width_tile, 0);
|
|
|
|
DBE_SETREG(frm_control, frmWrite3b);
|
|
DBE_SETREG(did_control, 0);
|
|
|
|
// Wait for dbe to take frame settings
|
|
for (i = 0; i < 100000; i++) {
|
|
DBE_GETREG(frm_inhwctrl, readVal);
|
|
if (GET_DBE_FIELD(FRM_INHWCTRL, FRM_DMA_ENABLE, readVal) !=
|
|
0)
|
|
break;
|
|
else
|
|
udelay(1);
|
|
}
|
|
|
|
if (i == 100000)
|
|
printk(KERN_INFO
|
|
"sgivwfb: timeout waiting for frame DMA enable.\n");
|
|
|
|
outputVal = 0;
|
|
htmp = currentTiming->hblank_end - 19;
|
|
if (htmp < 0)
|
|
htmp += currentTiming->htotal; /* allow blank to wrap around */
|
|
SET_DBE_FIELD(VT_HPIXEN, VT_HPIXEN_ON, outputVal, htmp);
|
|
SET_DBE_FIELD(VT_HPIXEN, VT_HPIXEN_OFF, outputVal,
|
|
((htmp + currentTiming->width -
|
|
2) % currentTiming->htotal));
|
|
DBE_SETREG(vt_hpixen, outputVal);
|
|
|
|
outputVal = 0;
|
|
SET_DBE_FIELD(VT_VPIXEN, VT_VPIXEN_OFF, outputVal,
|
|
currentTiming->vblank_start);
|
|
SET_DBE_FIELD(VT_VPIXEN, VT_VPIXEN_ON, outputVal,
|
|
currentTiming->vblank_end);
|
|
DBE_SETREG(vt_vpixen, outputVal);
|
|
|
|
// Turn off mouse cursor
|
|
par->regs->crs_ctl = 0;
|
|
|
|
// XXX What's this section for??
|
|
DBE_GETREG(ctrlstat, readVal);
|
|
readVal &= 0x02000000;
|
|
|
|
if (readVal != 0) {
|
|
DBE_SETREG(ctrlstat, 0x30000000);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Set a single color register. The values supplied are already
|
|
* rounded down to the hardware's capabilities (according to the
|
|
* entries in the var structure). Return != 0 for invalid regno.
|
|
*/
|
|
|
|
static int sgivwfb_setcolreg(u_int regno, u_int red, u_int green,
|
|
u_int blue, u_int transp,
|
|
struct fb_info *info)
|
|
{
|
|
struct sgivw_par *par = (struct sgivw_par *) info->par;
|
|
|
|
if (regno > 255)
|
|
return 1;
|
|
red >>= 8;
|
|
green >>= 8;
|
|
blue >>= 8;
|
|
|
|
/* wait for the color map FIFO to have a free entry */
|
|
while (par->cmap_fifo == 0)
|
|
par->cmap_fifo = par->regs->cm_fifo;
|
|
|
|
par->regs->cmap[regno] = (red << 24) | (green << 16) | (blue << 8);
|
|
par->cmap_fifo--; /* assume FIFO is filling up */
|
|
return 0;
|
|
}
|
|
|
|
static int sgivwfb_mmap(struct fb_info *info,
|
|
struct vm_area_struct *vma)
|
|
{
|
|
int r;
|
|
|
|
pgprot_val(vma->vm_page_prot) =
|
|
pgprot_val(vma->vm_page_prot) | _PAGE_PCD;
|
|
|
|
r = vm_iomap_memory(vma, sgivwfb_mem_phys, sgivwfb_mem_size);
|
|
|
|
printk(KERN_DEBUG "sgivwfb: mmap framebuffer P(%lx)->V(%lx)\n",
|
|
sgivwfb_mem_phys + (vma->vm_pgoff << PAGE_SHIFT), vma->vm_start);
|
|
|
|
return r;
|
|
}
|
|
|
|
int __init sgivwfb_setup(char *options)
|
|
{
|
|
char *this_opt;
|
|
|
|
if (!options || !*options)
|
|
return 0;
|
|
|
|
while ((this_opt = strsep(&options, ",")) != NULL) {
|
|
if (!strncmp(this_opt, "monitor:", 8)) {
|
|
if (!strncmp(this_opt + 8, "crt", 3))
|
|
flatpanel_id = -1;
|
|
else if (!strncmp(this_opt + 8, "1600sw", 6))
|
|
flatpanel_id = FLATPANEL_SGI_1600SW;
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Initialisation
|
|
*/
|
|
static int sgivwfb_probe(struct platform_device *dev)
|
|
{
|
|
struct sgivw_par *par;
|
|
struct fb_info *info;
|
|
char *monitor;
|
|
|
|
info = framebuffer_alloc(sizeof(struct sgivw_par) + sizeof(u32) * 16, &dev->dev);
|
|
if (!info)
|
|
return -ENOMEM;
|
|
par = info->par;
|
|
|
|
if (!request_mem_region(DBE_REG_PHYS, DBE_REG_SIZE, "sgivwfb")) {
|
|
printk(KERN_ERR "sgivwfb: couldn't reserve mmio region\n");
|
|
framebuffer_release(info);
|
|
return -EBUSY;
|
|
}
|
|
|
|
par->regs = (struct asregs *) ioremap_nocache(DBE_REG_PHYS, DBE_REG_SIZE);
|
|
if (!par->regs) {
|
|
printk(KERN_ERR "sgivwfb: couldn't ioremap registers\n");
|
|
goto fail_ioremap_regs;
|
|
}
|
|
|
|
mtrr_add(sgivwfb_mem_phys, sgivwfb_mem_size, MTRR_TYPE_WRCOMB, 1);
|
|
|
|
sgivwfb_fix.smem_start = sgivwfb_mem_phys;
|
|
sgivwfb_fix.smem_len = sgivwfb_mem_size;
|
|
sgivwfb_fix.ywrapstep = ywrap;
|
|
sgivwfb_fix.ypanstep = ypan;
|
|
|
|
info->fix = sgivwfb_fix;
|
|
|
|
switch (flatpanel_id) {
|
|
case FLATPANEL_SGI_1600SW:
|
|
info->var = sgivwfb_var1600sw;
|
|
monitor = "SGI 1600SW flatpanel";
|
|
break;
|
|
default:
|
|
info->var = sgivwfb_var;
|
|
monitor = "CRT";
|
|
}
|
|
|
|
printk(KERN_INFO "sgivwfb: %s monitor selected\n", monitor);
|
|
|
|
info->fbops = &sgivwfb_ops;
|
|
info->pseudo_palette = (void *) (par + 1);
|
|
info->flags = FBINFO_DEFAULT;
|
|
|
|
info->screen_base = ioremap_nocache((unsigned long) sgivwfb_mem_phys, sgivwfb_mem_size);
|
|
if (!info->screen_base) {
|
|
printk(KERN_ERR "sgivwfb: couldn't ioremap screen_base\n");
|
|
goto fail_ioremap_fbmem;
|
|
}
|
|
|
|
if (fb_alloc_cmap(&info->cmap, 256, 0) < 0)
|
|
goto fail_color_map;
|
|
|
|
if (register_framebuffer(info) < 0) {
|
|
printk(KERN_ERR "sgivwfb: couldn't register framebuffer\n");
|
|
goto fail_register_framebuffer;
|
|
}
|
|
|
|
platform_set_drvdata(dev, info);
|
|
|
|
fb_info(info, "SGI DBE frame buffer device, using %ldK of video memory at %#lx\n",
|
|
sgivwfb_mem_size >> 10, sgivwfb_mem_phys);
|
|
return 0;
|
|
|
|
fail_register_framebuffer:
|
|
fb_dealloc_cmap(&info->cmap);
|
|
fail_color_map:
|
|
iounmap((char *) info->screen_base);
|
|
fail_ioremap_fbmem:
|
|
iounmap(par->regs);
|
|
fail_ioremap_regs:
|
|
release_mem_region(DBE_REG_PHYS, DBE_REG_SIZE);
|
|
framebuffer_release(info);
|
|
return -ENXIO;
|
|
}
|
|
|
|
static int sgivwfb_remove(struct platform_device *dev)
|
|
{
|
|
struct fb_info *info = platform_get_drvdata(dev);
|
|
|
|
if (info) {
|
|
struct sgivw_par *par = info->par;
|
|
|
|
unregister_framebuffer(info);
|
|
dbe_TurnOffDma(par);
|
|
iounmap(par->regs);
|
|
iounmap(info->screen_base);
|
|
release_mem_region(DBE_REG_PHYS, DBE_REG_SIZE);
|
|
fb_dealloc_cmap(&info->cmap);
|
|
framebuffer_release(info);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static struct platform_driver sgivwfb_driver = {
|
|
.probe = sgivwfb_probe,
|
|
.remove = sgivwfb_remove,
|
|
.driver = {
|
|
.name = "sgivwfb",
|
|
},
|
|
};
|
|
|
|
static struct platform_device *sgivwfb_device;
|
|
|
|
int __init sgivwfb_init(void)
|
|
{
|
|
int ret;
|
|
|
|
#ifndef MODULE
|
|
char *option = NULL;
|
|
|
|
if (fb_get_options("sgivwfb", &option))
|
|
return -ENODEV;
|
|
sgivwfb_setup(option);
|
|
#endif
|
|
ret = platform_driver_register(&sgivwfb_driver);
|
|
if (!ret) {
|
|
sgivwfb_device = platform_device_alloc("sgivwfb", 0);
|
|
if (sgivwfb_device) {
|
|
ret = platform_device_add(sgivwfb_device);
|
|
} else
|
|
ret = -ENOMEM;
|
|
if (ret) {
|
|
platform_driver_unregister(&sgivwfb_driver);
|
|
platform_device_put(sgivwfb_device);
|
|
}
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
module_init(sgivwfb_init);
|
|
|
|
#ifdef MODULE
|
|
MODULE_LICENSE("GPL");
|
|
|
|
static void __exit sgivwfb_exit(void)
|
|
{
|
|
platform_device_unregister(sgivwfb_device);
|
|
platform_driver_unregister(&sgivwfb_driver);
|
|
}
|
|
|
|
module_exit(sgivwfb_exit);
|
|
|
|
#endif /* MODULE */
|