+++ /dev/null
-// SPDX-License-Identifier: GPL-2.0-only
-/*
- * 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
- */
-
-#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 <linux/sizes.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 const 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");
git.samba.org / sfrench / cifs-2.6.git / commitdiff