mirror of https://gitee.com/openkylin/linux.git
841 lines
22 KiB
C
841 lines
22 KiB
C
/*
|
|
* Frame Buffer Driver for PKUnity-v3 Unigfx
|
|
* Code specific to PKUnity SoC and UniCore ISA
|
|
*
|
|
* Maintained by GUAN Xue-tao <gxt@mprc.pku.edu.cn>
|
|
* Copyright (C) 2001-2010 Guan Xuetao
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License version 2 as
|
|
* published by the Free Software Foundation.
|
|
*/
|
|
|
|
#include <linux/module.h>
|
|
#include <linux/kernel.h>
|
|
#include <linux/errno.h>
|
|
#include <linux/platform_device.h>
|
|
#include <linux/clk.h>
|
|
#include <linux/fb.h>
|
|
#include <linux/init.h>
|
|
#include <linux/console.h>
|
|
#include <linux/mm.h>
|
|
|
|
#include <asm/sizes.h>
|
|
#include <asm/pgtable.h>
|
|
#include <mach/hardware.h>
|
|
|
|
/* Platform_data reserved for unifb registers. */
|
|
#define UNIFB_REGS_NUM 10
|
|
/* RAM reserved for the frame buffer. */
|
|
#define UNIFB_MEMSIZE (SZ_4M) /* 4 MB for 1024*768*32b */
|
|
|
|
/*
|
|
* cause UNIGFX don not have EDID
|
|
* all the modes are organized as follow
|
|
*/
|
|
static const struct fb_videomode unifb_modes[] = {
|
|
/* 0 640x480-60 VESA */
|
|
{ "640x480@60", 60, 640, 480, 25175000, 48, 16, 34, 10, 96, 1,
|
|
0, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
|
|
/* 1 640x480-75 VESA */
|
|
{ "640x480@75", 75, 640, 480, 31500000, 120, 16, 18, 1, 64, 1,
|
|
0, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
|
|
/* 2 800x600-60 VESA */
|
|
{ "800x600@60", 60, 800, 600, 40000000, 88, 40, 26, 1, 128, 1,
|
|
0, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
|
|
/* 3 800x600-75 VESA */
|
|
{ "800x600@75", 75, 800, 600, 49500000, 160, 16, 23, 1, 80, 1,
|
|
0, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
|
|
/* 4 1024x768-60 VESA */
|
|
{ "1024x768@60", 60, 1024, 768, 65000000, 160, 24, 34, 3, 136, 1,
|
|
0, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
|
|
/* 5 1024x768-75 VESA */
|
|
{ "1024x768@75", 75, 1024, 768, 78750000, 176, 16, 30, 1, 96, 1,
|
|
0, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
|
|
/* 6 1280x960-60 VESA */
|
|
{ "1280x960@60", 60, 1280, 960, 108000000, 312, 96, 38, 1, 112, 1,
|
|
0, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
|
|
/* 7 1440x900-60 VESA */
|
|
{ "1440x900@60", 60, 1440, 900, 106500000, 232, 80, 30, 3, 152, 1,
|
|
0, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
|
|
/* 8 FIXME 9 1024x600-60 VESA UNTESTED */
|
|
{ "1024x600@60", 60, 1024, 600, 50650000, 160, 24, 26, 1, 136, 1,
|
|
0, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
|
|
/* 9 FIXME 10 1024x600-75 VESA UNTESTED */
|
|
{ "1024x600@75", 75, 1024, 600, 61500000, 176, 16, 23, 1, 96, 1,
|
|
0, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
|
|
/* 10 FIXME 11 1366x768-60 VESA UNTESTED */
|
|
{ "1366x768@60", 60, 1366, 768, 85500000, 256, 58, 18, 1, 112, 3,
|
|
0, FB_VMODE_NONINTERLACED, FB_MODE_IS_VESA },
|
|
};
|
|
|
|
static const struct fb_var_screeninfo unifb_default = {
|
|
.xres = 640,
|
|
.yres = 480,
|
|
.xres_virtual = 640,
|
|
.yres_virtual = 480,
|
|
.bits_per_pixel = 16,
|
|
.red = { 11, 5, 0 },
|
|
.green = { 5, 6, 0 },
|
|
.blue = { 0, 5, 0 },
|
|
.activate = FB_ACTIVATE_NOW,
|
|
.height = -1,
|
|
.width = -1,
|
|
.pixclock = 25175000,
|
|
.left_margin = 48,
|
|
.right_margin = 16,
|
|
.upper_margin = 33,
|
|
.lower_margin = 10,
|
|
.hsync_len = 96,
|
|
.vsync_len = 2,
|
|
.vmode = FB_VMODE_NONINTERLACED,
|
|
};
|
|
|
|
static struct fb_fix_screeninfo unifb_fix = {
|
|
.id = "UNIGFX FB",
|
|
.type = FB_TYPE_PACKED_PIXELS,
|
|
.visual = FB_VISUAL_TRUECOLOR,
|
|
.xpanstep = 1,
|
|
.ypanstep = 1,
|
|
.ywrapstep = 1,
|
|
.accel = FB_ACCEL_NONE,
|
|
};
|
|
|
|
static void unifb_sync(struct fb_info *info)
|
|
{
|
|
/* TODO: may, this can be replaced by interrupt */
|
|
int cnt;
|
|
|
|
for (cnt = 0; cnt < 0x10000000; cnt++) {
|
|
if (readl(UGE_COMMAND) & 0x1000000)
|
|
return;
|
|
}
|
|
|
|
if (cnt > 0x8000000)
|
|
dev_warn(info->device, "Warning: UniGFX GE time out ...\n");
|
|
}
|
|
|
|
static void unifb_prim_fillrect(struct fb_info *info,
|
|
const struct fb_fillrect *region)
|
|
{
|
|
int awidth = region->width;
|
|
int aheight = region->height;
|
|
int m_iBpp = info->var.bits_per_pixel;
|
|
int screen_width = info->var.xres;
|
|
int src_sel = 1; /* from fg_color */
|
|
int pat_sel = 1;
|
|
int src_x0 = 0;
|
|
int dst_x0 = region->dx;
|
|
int src_y0 = 0;
|
|
int dst_y0 = region->dy;
|
|
int rop_alpha_sel = 0;
|
|
int rop_alpha_code = 0xCC;
|
|
int x_dir = 1;
|
|
int y_dir = 1;
|
|
int alpha_r = 0;
|
|
int alpha_sel = 0;
|
|
int dst_pitch = screen_width * (m_iBpp / 8);
|
|
int dst_offset = dst_y0 * dst_pitch + dst_x0 * (m_iBpp / 8);
|
|
int src_pitch = screen_width * (m_iBpp / 8);
|
|
int src_offset = src_y0 * src_pitch + src_x0 * (m_iBpp / 8);
|
|
unsigned int command = 0;
|
|
int clip_region = 0;
|
|
int clip_en = 0;
|
|
int tp_en = 0;
|
|
int fg_color = 0;
|
|
int bottom = info->var.yres - 1;
|
|
int right = info->var.xres - 1;
|
|
int top = 0;
|
|
|
|
bottom = (bottom << 16) | right;
|
|
command = (rop_alpha_sel << 26) | (pat_sel << 18) | (src_sel << 16)
|
|
| (x_dir << 20) | (y_dir << 21) | (command << 24)
|
|
| (clip_region << 23) | (clip_en << 22) | (tp_en << 27);
|
|
src_pitch = (dst_pitch << 16) | src_pitch;
|
|
awidth = awidth | (aheight << 16);
|
|
alpha_r = ((rop_alpha_code & 0xff) << 8) | (alpha_r & 0xff)
|
|
| (alpha_sel << 16);
|
|
src_x0 = (src_x0 & 0x1fff) | ((src_y0 & 0x1fff) << 16);
|
|
dst_x0 = (dst_x0 & 0x1fff) | ((dst_y0 & 0x1fff) << 16);
|
|
fg_color = region->color;
|
|
|
|
unifb_sync(info);
|
|
|
|
writel(((u32 *)(info->pseudo_palette))[fg_color], UGE_FCOLOR);
|
|
writel(0, UGE_BCOLOR);
|
|
writel(src_pitch, UGE_PITCH);
|
|
writel(src_offset, UGE_SRCSTART);
|
|
writel(dst_offset, UGE_DSTSTART);
|
|
writel(awidth, UGE_WIDHEIGHT);
|
|
writel(top, UGE_CLIP0);
|
|
writel(bottom, UGE_CLIP1);
|
|
writel(alpha_r, UGE_ROPALPHA);
|
|
writel(src_x0, UGE_SRCXY);
|
|
writel(dst_x0, UGE_DSTXY);
|
|
writel(command, UGE_COMMAND);
|
|
}
|
|
|
|
static void unifb_fillrect(struct fb_info *info,
|
|
const struct fb_fillrect *region)
|
|
{
|
|
struct fb_fillrect modded;
|
|
int vxres, vyres;
|
|
|
|
if (info->flags & FBINFO_HWACCEL_DISABLED) {
|
|
sys_fillrect(info, region);
|
|
return;
|
|
}
|
|
|
|
vxres = info->var.xres_virtual;
|
|
vyres = info->var.yres_virtual;
|
|
|
|
memcpy(&modded, region, sizeof(struct fb_fillrect));
|
|
|
|
if (!modded.width || !modded.height ||
|
|
modded.dx >= vxres || modded.dy >= vyres)
|
|
return;
|
|
|
|
if (modded.dx + modded.width > vxres)
|
|
modded.width = vxres - modded.dx;
|
|
if (modded.dy + modded.height > vyres)
|
|
modded.height = vyres - modded.dy;
|
|
|
|
unifb_prim_fillrect(info, &modded);
|
|
}
|
|
|
|
static void unifb_prim_copyarea(struct fb_info *info,
|
|
const struct fb_copyarea *area)
|
|
{
|
|
int awidth = area->width;
|
|
int aheight = area->height;
|
|
int m_iBpp = info->var.bits_per_pixel;
|
|
int screen_width = info->var.xres;
|
|
int src_sel = 2; /* from mem */
|
|
int pat_sel = 0;
|
|
int src_x0 = area->sx;
|
|
int dst_x0 = area->dx;
|
|
int src_y0 = area->sy;
|
|
int dst_y0 = area->dy;
|
|
|
|
int rop_alpha_sel = 0;
|
|
int rop_alpha_code = 0xCC;
|
|
int x_dir = 1;
|
|
int y_dir = 1;
|
|
|
|
int alpha_r = 0;
|
|
int alpha_sel = 0;
|
|
int dst_pitch = screen_width * (m_iBpp / 8);
|
|
int dst_offset = dst_y0 * dst_pitch + dst_x0 * (m_iBpp / 8);
|
|
int src_pitch = screen_width * (m_iBpp / 8);
|
|
int src_offset = src_y0 * src_pitch + src_x0 * (m_iBpp / 8);
|
|
unsigned int command = 0;
|
|
int clip_region = 0;
|
|
int clip_en = 1;
|
|
int tp_en = 0;
|
|
int top = 0;
|
|
int bottom = info->var.yres;
|
|
int right = info->var.xres;
|
|
int fg_color = 0;
|
|
int bg_color = 0;
|
|
|
|
if (src_x0 < 0)
|
|
src_x0 = 0;
|
|
if (src_y0 < 0)
|
|
src_y0 = 0;
|
|
|
|
if (src_y0 - dst_y0 > 0) {
|
|
y_dir = 1;
|
|
} else {
|
|
y_dir = 0;
|
|
src_offset = (src_y0 + aheight) * src_pitch +
|
|
src_x0 * (m_iBpp / 8);
|
|
dst_offset = (dst_y0 + aheight) * dst_pitch +
|
|
dst_x0 * (m_iBpp / 8);
|
|
src_y0 += aheight;
|
|
dst_y0 += aheight;
|
|
}
|
|
|
|
command = (rop_alpha_sel << 26) | (pat_sel << 18) | (src_sel << 16) |
|
|
(x_dir << 20) | (y_dir << 21) | (command << 24) |
|
|
(clip_region << 23) | (clip_en << 22) | (tp_en << 27);
|
|
src_pitch = (dst_pitch << 16) | src_pitch;
|
|
awidth = awidth | (aheight << 16);
|
|
alpha_r = ((rop_alpha_code & 0xff) << 8) | (alpha_r & 0xff) |
|
|
(alpha_sel << 16);
|
|
src_x0 = (src_x0 & 0x1fff) | ((src_y0 & 0x1fff) << 16);
|
|
dst_x0 = (dst_x0 & 0x1fff) | ((dst_y0 & 0x1fff) << 16);
|
|
bottom = (bottom << 16) | right;
|
|
|
|
unifb_sync(info);
|
|
|
|
writel(src_pitch, UGE_PITCH);
|
|
writel(src_offset, UGE_SRCSTART);
|
|
writel(dst_offset, UGE_DSTSTART);
|
|
writel(awidth, UGE_WIDHEIGHT);
|
|
writel(top, UGE_CLIP0);
|
|
writel(bottom, UGE_CLIP1);
|
|
writel(bg_color, UGE_BCOLOR);
|
|
writel(fg_color, UGE_FCOLOR);
|
|
writel(alpha_r, UGE_ROPALPHA);
|
|
writel(src_x0, UGE_SRCXY);
|
|
writel(dst_x0, UGE_DSTXY);
|
|
writel(command, UGE_COMMAND);
|
|
}
|
|
|
|
static void unifb_copyarea(struct fb_info *info, const struct fb_copyarea *area)
|
|
{
|
|
struct fb_copyarea modded;
|
|
u32 vxres, vyres;
|
|
modded.sx = area->sx;
|
|
modded.sy = area->sy;
|
|
modded.dx = area->dx;
|
|
modded.dy = area->dy;
|
|
modded.width = area->width;
|
|
modded.height = area->height;
|
|
|
|
if (info->flags & FBINFO_HWACCEL_DISABLED) {
|
|
sys_copyarea(info, area);
|
|
return;
|
|
}
|
|
|
|
vxres = info->var.xres_virtual;
|
|
vyres = info->var.yres_virtual;
|
|
|
|
if (!modded.width || !modded.height ||
|
|
modded.sx >= vxres || modded.sy >= vyres ||
|
|
modded.dx >= vxres || modded.dy >= vyres)
|
|
return;
|
|
|
|
if (modded.sx + modded.width > vxres)
|
|
modded.width = vxres - modded.sx;
|
|
if (modded.dx + modded.width > vxres)
|
|
modded.width = vxres - modded.dx;
|
|
if (modded.sy + modded.height > vyres)
|
|
modded.height = vyres - modded.sy;
|
|
if (modded.dy + modded.height > vyres)
|
|
modded.height = vyres - modded.dy;
|
|
|
|
unifb_prim_copyarea(info, &modded);
|
|
}
|
|
|
|
static void unifb_imageblit(struct fb_info *info, const struct fb_image *image)
|
|
{
|
|
sys_imageblit(info, image);
|
|
}
|
|
|
|
static u_long get_line_length(int xres_virtual, int bpp)
|
|
{
|
|
u_long length;
|
|
|
|
length = xres_virtual * bpp;
|
|
length = (length + 31) & ~31;
|
|
length >>= 3;
|
|
return length;
|
|
}
|
|
|
|
/*
|
|
* Setting the video mode has been split into two parts.
|
|
* First part, xxxfb_check_var, must not write anything
|
|
* to hardware, it should only verify and adjust var.
|
|
* This means it doesn't alter par but it does use hardware
|
|
* data from it to check this var.
|
|
*/
|
|
static int unifb_check_var(struct fb_var_screeninfo *var,
|
|
struct fb_info *info)
|
|
{
|
|
u_long line_length;
|
|
|
|
/*
|
|
* FB_VMODE_CONUPDATE and FB_VMODE_SMOOTH_XPAN are equal!
|
|
* as FB_VMODE_SMOOTH_XPAN is only used internally
|
|
*/
|
|
|
|
if (var->vmode & FB_VMODE_CONUPDATE) {
|
|
var->vmode |= FB_VMODE_YWRAP;
|
|
var->xoffset = info->var.xoffset;
|
|
var->yoffset = info->var.yoffset;
|
|
}
|
|
|
|
/*
|
|
* Some very basic checks
|
|
*/
|
|
if (!var->xres)
|
|
var->xres = 1;
|
|
if (!var->yres)
|
|
var->yres = 1;
|
|
if (var->xres > var->xres_virtual)
|
|
var->xres_virtual = var->xres;
|
|
if (var->yres > var->yres_virtual)
|
|
var->yres_virtual = var->yres;
|
|
if (var->bits_per_pixel <= 1)
|
|
var->bits_per_pixel = 1;
|
|
else if (var->bits_per_pixel <= 8)
|
|
var->bits_per_pixel = 8;
|
|
else if (var->bits_per_pixel <= 16)
|
|
var->bits_per_pixel = 16;
|
|
else if (var->bits_per_pixel <= 24)
|
|
var->bits_per_pixel = 24;
|
|
else if (var->bits_per_pixel <= 32)
|
|
var->bits_per_pixel = 32;
|
|
else
|
|
return -EINVAL;
|
|
|
|
if (var->xres_virtual < var->xoffset + var->xres)
|
|
var->xres_virtual = var->xoffset + var->xres;
|
|
if (var->yres_virtual < var->yoffset + var->yres)
|
|
var->yres_virtual = var->yoffset + var->yres;
|
|
|
|
/*
|
|
* Memory limit
|
|
*/
|
|
line_length =
|
|
get_line_length(var->xres_virtual, var->bits_per_pixel);
|
|
if (line_length * var->yres_virtual > UNIFB_MEMSIZE)
|
|
return -ENOMEM;
|
|
|
|
/*
|
|
* Now that we checked it we alter var. The reason being is that the
|
|
* video mode passed in might not work but slight changes to it might
|
|
* make it work. This way we let the user know what is acceptable.
|
|
*/
|
|
switch (var->bits_per_pixel) {
|
|
case 1:
|
|
case 8:
|
|
var->red.offset = 0;
|
|
var->red.length = 8;
|
|
var->green.offset = 0;
|
|
var->green.length = 8;
|
|
var->blue.offset = 0;
|
|
var->blue.length = 8;
|
|
var->transp.offset = 0;
|
|
var->transp.length = 0;
|
|
break;
|
|
case 16: /* RGBA 5551 */
|
|
if (var->transp.length) {
|
|
var->red.offset = 0;
|
|
var->red.length = 5;
|
|
var->green.offset = 5;
|
|
var->green.length = 5;
|
|
var->blue.offset = 10;
|
|
var->blue.length = 5;
|
|
var->transp.offset = 15;
|
|
var->transp.length = 1;
|
|
} else { /* RGB 565 */
|
|
var->red.offset = 11;
|
|
var->red.length = 5;
|
|
var->green.offset = 5;
|
|
var->green.length = 6;
|
|
var->blue.offset = 0;
|
|
var->blue.length = 5;
|
|
var->transp.offset = 0;
|
|
var->transp.length = 0;
|
|
}
|
|
break;
|
|
case 24: /* RGB 888 */
|
|
var->red.offset = 0;
|
|
var->red.length = 8;
|
|
var->green.offset = 8;
|
|
var->green.length = 8;
|
|
var->blue.offset = 16;
|
|
var->blue.length = 8;
|
|
var->transp.offset = 0;
|
|
var->transp.length = 0;
|
|
break;
|
|
case 32: /* RGBA 8888 */
|
|
var->red.offset = 16;
|
|
var->red.length = 8;
|
|
var->green.offset = 8;
|
|
var->green.length = 8;
|
|
var->blue.offset = 0;
|
|
var->blue.length = 8;
|
|
var->transp.offset = 24;
|
|
var->transp.length = 8;
|
|
break;
|
|
}
|
|
var->red.msb_right = 0;
|
|
var->green.msb_right = 0;
|
|
var->blue.msb_right = 0;
|
|
var->transp.msb_right = 0;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* This routine actually sets the video mode. It's in here where we
|
|
* the hardware state info->par and fix which can be affected by the
|
|
* change in par. For this driver it doesn't do much.
|
|
*/
|
|
static int unifb_set_par(struct fb_info *info)
|
|
{
|
|
int hTotal, vTotal, hSyncStart, hSyncEnd, vSyncStart, vSyncEnd;
|
|
int format;
|
|
|
|
#ifdef CONFIG_PUV3_PM
|
|
struct clk *clk_vga;
|
|
u32 pixclk = 0;
|
|
int i;
|
|
|
|
for (i = 0; i <= 10; i++) {
|
|
if (info->var.xres == unifb_modes[i].xres
|
|
&& info->var.yres == unifb_modes[i].yres
|
|
&& info->var.upper_margin == unifb_modes[i].upper_margin
|
|
&& info->var.lower_margin == unifb_modes[i].lower_margin
|
|
&& info->var.left_margin == unifb_modes[i].left_margin
|
|
&& info->var.right_margin == unifb_modes[i].right_margin
|
|
&& info->var.hsync_len == unifb_modes[i].hsync_len
|
|
&& info->var.vsync_len == unifb_modes[i].vsync_len) {
|
|
pixclk = unifb_modes[i].pixclock;
|
|
break;
|
|
}
|
|
}
|
|
|
|
/* set clock rate */
|
|
clk_vga = clk_get(info->device, "VGA_CLK");
|
|
if (clk_vga == ERR_PTR(-ENOENT))
|
|
return -ENOENT;
|
|
|
|
if (pixclk != 0) {
|
|
if (clk_set_rate(clk_vga, pixclk)) { /* set clock failed */
|
|
info->fix = unifb_fix;
|
|
info->var = unifb_default;
|
|
if (clk_set_rate(clk_vga, unifb_default.pixclock))
|
|
return -EINVAL;
|
|
}
|
|
}
|
|
#endif
|
|
|
|
info->fix.line_length = get_line_length(info->var.xres_virtual,
|
|
info->var.bits_per_pixel);
|
|
|
|
hSyncStart = info->var.xres + info->var.right_margin;
|
|
hSyncEnd = hSyncStart + info->var.hsync_len;
|
|
hTotal = hSyncEnd + info->var.left_margin;
|
|
|
|
vSyncStart = info->var.yres + info->var.lower_margin;
|
|
vSyncEnd = vSyncStart + info->var.vsync_len;
|
|
vTotal = vSyncEnd + info->var.upper_margin;
|
|
|
|
switch (info->var.bits_per_pixel) {
|
|
case 8:
|
|
format = UDE_CFG_DST8;
|
|
break;
|
|
case 16:
|
|
format = UDE_CFG_DST16;
|
|
break;
|
|
case 24:
|
|
format = UDE_CFG_DST24;
|
|
break;
|
|
case 32:
|
|
format = UDE_CFG_DST32;
|
|
break;
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
|
|
writel(info->fix.smem_start, UDE_FSA);
|
|
writel(info->var.yres, UDE_LS);
|
|
writel(get_line_length(info->var.xres,
|
|
info->var.bits_per_pixel) >> 3, UDE_PS);
|
|
/* >> 3 for hardware required. */
|
|
writel((hTotal << 16) | (info->var.xres), UDE_HAT);
|
|
writel(((hTotal - 1) << 16) | (info->var.xres - 1), UDE_HBT);
|
|
writel(((hSyncEnd - 1) << 16) | (hSyncStart - 1), UDE_HST);
|
|
writel((vTotal << 16) | (info->var.yres), UDE_VAT);
|
|
writel(((vTotal - 1) << 16) | (info->var.yres - 1), UDE_VBT);
|
|
writel(((vSyncEnd - 1) << 16) | (vSyncStart - 1), UDE_VST);
|
|
writel(UDE_CFG_GDEN_ENABLE | UDE_CFG_TIMEUP_ENABLE
|
|
| format | 0xC0000001, UDE_CFG);
|
|
|
|
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 unifb_setcolreg(u_int regno, u_int red, u_int green, u_int blue,
|
|
u_int transp, struct fb_info *info)
|
|
{
|
|
if (regno >= 256) /* no. of hw registers */
|
|
return 1;
|
|
|
|
/* grayscale works only partially under directcolor */
|
|
if (info->var.grayscale) {
|
|
/* grayscale = 0.30*R + 0.59*G + 0.11*B */
|
|
red = green = blue =
|
|
(red * 77 + green * 151 + blue * 28) >> 8;
|
|
}
|
|
|
|
#define CNVT_TOHW(val, width) ((((val)<<(width))+0x7FFF-(val))>>16)
|
|
switch (info->fix.visual) {
|
|
case FB_VISUAL_TRUECOLOR:
|
|
case FB_VISUAL_PSEUDOCOLOR:
|
|
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);
|
|
break;
|
|
case FB_VISUAL_DIRECTCOLOR:
|
|
red = CNVT_TOHW(red, 8); /* expect 8 bit DAC */
|
|
green = CNVT_TOHW(green, 8);
|
|
blue = CNVT_TOHW(blue, 8);
|
|
/* hey, there is bug in transp handling... */
|
|
transp = CNVT_TOHW(transp, 8);
|
|
break;
|
|
}
|
|
#undef CNVT_TOHW
|
|
/* Truecolor has hardware independent palette */
|
|
if (info->fix.visual == FB_VISUAL_TRUECOLOR) {
|
|
u32 v;
|
|
|
|
if (regno >= 16)
|
|
return 1;
|
|
|
|
v = (red << info->var.red.offset) |
|
|
(green << info->var.green.offset) |
|
|
(blue << info->var.blue.offset) |
|
|
(transp << info->var.transp.offset);
|
|
switch (info->var.bits_per_pixel) {
|
|
case 8:
|
|
break;
|
|
case 16:
|
|
case 24:
|
|
case 32:
|
|
((u32 *) (info->pseudo_palette))[regno] = v;
|
|
break;
|
|
default:
|
|
return 1;
|
|
}
|
|
return 0;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Pan or Wrap the Display
|
|
*
|
|
* This call looks only at xoffset, yoffset and the FB_VMODE_YWRAP flag
|
|
*/
|
|
static int unifb_pan_display(struct fb_var_screeninfo *var,
|
|
struct fb_info *info)
|
|
{
|
|
if (var->vmode & FB_VMODE_YWRAP) {
|
|
if (var->yoffset < 0
|
|
|| var->yoffset >= info->var.yres_virtual
|
|
|| var->xoffset)
|
|
return -EINVAL;
|
|
} else {
|
|
if (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;
|
|
return 0;
|
|
}
|
|
|
|
int unifb_mmap(struct fb_info *info,
|
|
struct vm_area_struct *vma)
|
|
{
|
|
vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
|
|
|
|
return vm_iomap_memory(vma, info->fix.smem_start, info->fix.smem_len);
|
|
}
|
|
|
|
static struct fb_ops unifb_ops = {
|
|
.fb_read = fb_sys_read,
|
|
.fb_write = fb_sys_write,
|
|
.fb_check_var = unifb_check_var,
|
|
.fb_set_par = unifb_set_par,
|
|
.fb_setcolreg = unifb_setcolreg,
|
|
.fb_pan_display = unifb_pan_display,
|
|
.fb_fillrect = unifb_fillrect,
|
|
.fb_copyarea = unifb_copyarea,
|
|
.fb_imageblit = unifb_imageblit,
|
|
.fb_mmap = unifb_mmap,
|
|
};
|
|
|
|
/*
|
|
* Initialisation
|
|
*/
|
|
static int unifb_probe(struct platform_device *dev)
|
|
{
|
|
struct fb_info *info;
|
|
u32 unifb_regs[UNIFB_REGS_NUM];
|
|
int retval = -ENOMEM;
|
|
struct resource *iomem;
|
|
void *videomemory;
|
|
|
|
videomemory = (void *)__get_free_pages(GFP_KERNEL | __GFP_COMP,
|
|
get_order(UNIFB_MEMSIZE));
|
|
if (!videomemory)
|
|
goto err;
|
|
|
|
memset(videomemory, 0, UNIFB_MEMSIZE);
|
|
|
|
unifb_fix.smem_start = virt_to_phys(videomemory);
|
|
unifb_fix.smem_len = UNIFB_MEMSIZE;
|
|
|
|
iomem = platform_get_resource(dev, IORESOURCE_MEM, 0);
|
|
unifb_fix.mmio_start = iomem->start;
|
|
|
|
info = framebuffer_alloc(sizeof(u32)*256, &dev->dev);
|
|
if (!info)
|
|
goto err;
|
|
|
|
info->screen_base = (char __iomem *)videomemory;
|
|
info->fbops = &unifb_ops;
|
|
|
|
retval = fb_find_mode(&info->var, info, NULL,
|
|
unifb_modes, 10, &unifb_modes[0], 16);
|
|
|
|
if (!retval || (retval == 4))
|
|
info->var = unifb_default;
|
|
|
|
info->fix = unifb_fix;
|
|
info->pseudo_palette = info->par;
|
|
info->par = NULL;
|
|
info->flags = FBINFO_FLAG_DEFAULT;
|
|
#ifdef FB_ACCEL_PUV3_UNIGFX
|
|
info->fix.accel = FB_ACCEL_PUV3_UNIGFX;
|
|
#endif
|
|
|
|
retval = fb_alloc_cmap(&info->cmap, 256, 0);
|
|
if (retval < 0)
|
|
goto err1;
|
|
|
|
retval = register_framebuffer(info);
|
|
if (retval < 0)
|
|
goto err2;
|
|
platform_set_drvdata(dev, info);
|
|
platform_device_add_data(dev, unifb_regs, sizeof(u32) * UNIFB_REGS_NUM);
|
|
|
|
fb_info(info, "Virtual frame buffer device, using %dM of video memory\n",
|
|
UNIFB_MEMSIZE >> 20);
|
|
return 0;
|
|
err2:
|
|
fb_dealloc_cmap(&info->cmap);
|
|
err1:
|
|
framebuffer_release(info);
|
|
err:
|
|
return retval;
|
|
}
|
|
|
|
static int unifb_remove(struct platform_device *dev)
|
|
{
|
|
struct fb_info *info = platform_get_drvdata(dev);
|
|
|
|
if (info) {
|
|
unregister_framebuffer(info);
|
|
fb_dealloc_cmap(&info->cmap);
|
|
framebuffer_release(info);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
#ifdef CONFIG_PM
|
|
static int unifb_resume(struct platform_device *dev)
|
|
{
|
|
int rc = 0;
|
|
u32 *unifb_regs = dev->dev.platform_data;
|
|
|
|
if (dev->dev.power.power_state.event == PM_EVENT_ON)
|
|
return 0;
|
|
|
|
console_lock();
|
|
|
|
if (dev->dev.power.power_state.event == PM_EVENT_SUSPEND) {
|
|
writel(unifb_regs[0], UDE_FSA);
|
|
writel(unifb_regs[1], UDE_LS);
|
|
writel(unifb_regs[2], UDE_PS);
|
|
writel(unifb_regs[3], UDE_HAT);
|
|
writel(unifb_regs[4], UDE_HBT);
|
|
writel(unifb_regs[5], UDE_HST);
|
|
writel(unifb_regs[6], UDE_VAT);
|
|
writel(unifb_regs[7], UDE_VBT);
|
|
writel(unifb_regs[8], UDE_VST);
|
|
writel(unifb_regs[9], UDE_CFG);
|
|
}
|
|
dev->dev.power.power_state = PMSG_ON;
|
|
|
|
console_unlock();
|
|
|
|
return rc;
|
|
}
|
|
|
|
static int unifb_suspend(struct platform_device *dev, pm_message_t mesg)
|
|
{
|
|
u32 *unifb_regs = dev->dev.platform_data;
|
|
|
|
unifb_regs[0] = readl(UDE_FSA);
|
|
unifb_regs[1] = readl(UDE_LS);
|
|
unifb_regs[2] = readl(UDE_PS);
|
|
unifb_regs[3] = readl(UDE_HAT);
|
|
unifb_regs[4] = readl(UDE_HBT);
|
|
unifb_regs[5] = readl(UDE_HST);
|
|
unifb_regs[6] = readl(UDE_VAT);
|
|
unifb_regs[7] = readl(UDE_VBT);
|
|
unifb_regs[8] = readl(UDE_VST);
|
|
unifb_regs[9] = readl(UDE_CFG);
|
|
|
|
if (mesg.event == dev->dev.power.power_state.event)
|
|
return 0;
|
|
|
|
switch (mesg.event) {
|
|
case PM_EVENT_FREEZE: /* about to take snapshot */
|
|
case PM_EVENT_PRETHAW: /* before restoring snapshot */
|
|
goto done;
|
|
}
|
|
|
|
console_lock();
|
|
|
|
/* do nothing... */
|
|
|
|
console_unlock();
|
|
|
|
done:
|
|
dev->dev.power.power_state = mesg;
|
|
|
|
return 0;
|
|
}
|
|
#else
|
|
#define unifb_resume NULL
|
|
#define unifb_suspend NULL
|
|
#endif
|
|
|
|
static struct platform_driver unifb_driver = {
|
|
.probe = unifb_probe,
|
|
.remove = unifb_remove,
|
|
.resume = unifb_resume,
|
|
.suspend = unifb_suspend,
|
|
.driver = {
|
|
.name = "PKUnity-v3-UNIGFX",
|
|
},
|
|
};
|
|
|
|
static int __init unifb_init(void)
|
|
{
|
|
#ifndef MODULE
|
|
if (fb_get_options("unifb", NULL))
|
|
return -ENODEV;
|
|
#endif
|
|
|
|
return platform_driver_register(&unifb_driver);
|
|
}
|
|
|
|
module_init(unifb_init);
|
|
|
|
static void __exit unifb_exit(void)
|
|
{
|
|
platform_driver_unregister(&unifb_driver);
|
|
}
|
|
|
|
module_exit(unifb_exit);
|
|
|
|
MODULE_LICENSE("GPL v2");
|