From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753163Ab1AXCau (ORCPT ); Sun, 23 Jan 2011 21:30:50 -0500 Received: from mprc.pku.edu.cn ([162.105.203.9]:44473 "EHLO mprc.pku.edu.cn" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753015Ab1AXCah (ORCPT ); Sun, 23 Jan 2011 21:30:37 -0500 From: "Guan Xuetao" To: Cc: Subject: [PATCH] unicore32: add framebuffer driver for unigfx engine in PKUnity SoC Date: Sat, 22 Jan 2011 18:29:45 +0800 Message-ID: <01cf01cbba1f$49f84130$dde8c390$@mprc.pku.edu.cn> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit X-Mailer: Microsoft Outlook 14.0 thread-index: Acu6HtxMIFpzhBx+SjemkU3yHhRK7A== Content-Language: zh-cn Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Guan Xuetao This patch adds framebuffer driver for unigfx engine in PKUnity SoC. 1. add CONFIG_FB_PUV3_UNIGFX for configuration and build 2. add FB_ACCEL_PUV3_UNIGFX definition in include/linux/fb.h 3. driver based on drivers/video/vfb.c Signed-off-by: Guan Xuetao --- drivers/video/Kconfig | 11 + drivers/video/Makefile | 1 + drivers/video/puv3_fb.c | 932 +++++++++++++++++++++++++++++++++++++++++++++++ include/linux/fb.h | 2 + 4 files changed, 946 insertions(+), 0 deletions(-) diff --git a/drivers/video/Kconfig b/drivers/video/Kconfig index 27c1fb4..13bf36e 100644 --- a/drivers/video/Kconfig +++ b/drivers/video/Kconfig @@ -2259,6 +2259,17 @@ config FB_JZ4740 help Framebuffer support for the JZ4740 SoC. +config FB_PUV3_UNIGFX + tristate "PKUnity v3 Unigfx framebuffer support" + depends on FB && UNICORE32 && ARCH_PUV3 + select FB_SYS_FILLRECT + select FB_SYS_COPYAREA + select FB_SYS_IMAGEBLIT + select FB_SYS_FOPS + help + Choose this option if you want to use the Unigfx device as a + framebuffer device. Without the support of PCI & AGP. + source "drivers/video/omap/Kconfig" source "drivers/video/omap2/Kconfig" diff --git a/drivers/video/Makefile b/drivers/video/Makefile index 485e8ed..45ecd11 100644 --- a/drivers/video/Makefile +++ b/drivers/video/Makefile @@ -134,6 +134,7 @@ obj-$(CONFIG_FB_MB862XX) += mb862xx/ obj-$(CONFIG_FB_MSM) += msm/ obj-$(CONFIG_FB_NUC900) += nuc900fb.o obj-$(CONFIG_FB_JZ4740) += jz4740_fb.o +obj-$(CONFIG_FB_PUV3_UNIGFX) += puv3_fb.o # Platform or fallback drivers go here obj-$(CONFIG_FB_UVESA) += uvesafb.o diff --git a/drivers/video/puv3_fb.c b/drivers/video/puv3_fb.c new file mode 100644 index 0000000..d938a73 --- /dev/null +++ b/drivers/video/puv3_fb.c @@ -0,0 +1,932 @@ +/* + * Frame Buffer Driver for PKUnity-v3 Unigfx + * Code specific to PKUnity SoC and UniCore ISA + * + * Maintained by GUAN Xue-tao + * 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 +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include +#include + +static char *unifb_option = NULL; +static unsigned long unifb_regs[10]; + +/* + * 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 }, +}; + +/* + * RAM we reserve for the frame buffer. This defines the maximum screen size + * + * The default can be overridden if the driver is compiled as a module + */ +#define VIDEOMEMSIZE (SZ_4M) /* 4 MB for 1024*768*32b */ + +static void *videomemory; +static u_long videomemorysize = VIDEOMEMSIZE; +module_param(videomemorysize, ulong, 0); + +static 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 int unifb_enable __initdata = 1; /* enable by default */ +module_param(unifb_enable, bool, 0); + +static int unifb_check_var(struct fb_var_screeninfo *var, + struct fb_info *info); +static int unifb_set_par(struct fb_info *info); +static int unifb_setcolreg(u_int regno, u_int red, u_int green, u_int blue, + u_int transp, struct fb_info *info); +static int unifb_pan_display(struct fb_var_screeninfo *var, + struct fb_info *info); +static int unifb_mmap(struct fb_info *info, + struct vm_area_struct *vma); + +#ifdef CONFIG_PUV3_UNIGFX_HWACCEL +static void unifb_sync(void) +{ + /* TODO: may, this can be replaced by interrupt */ + int cnt; + + for (cnt = 0; cnt < 0x10000000; cnt++) { + if (UGE_COMMAND & 0x1000000) + return; + } + + if (cnt > 0x8000000) + printk(KERN_WARNING "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(); + + UGE_FCOLOR = ((u32 *)(info->pseudo_palette))[fg_color]; + UGE_BCOLOR = 0; + UGE_PITCH = src_pitch; + UGE_SRCSTART = src_offset; + UGE_DSTSTART = dst_offset; + UGE_WIDHEIGHT = awidth; + UGE_CLIP0 = top; + UGE_CLIP1 = bottom; + UGE_ROPALPHA = alpha_r; + UGE_SRCXY = src_x0; + UGE_DSTXY = dst_x0; + UGE_COMMAND = 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(); + + UGE_PITCH = src_pitch; + UGE_SRCSTART = src_offset; + UGE_DSTSTART = dst_offset; + UGE_WIDHEIGHT = awidth; + UGE_CLIP0 = top; + UGE_CLIP1 = bottom; + UGE_BCOLOR = bg_color; + UGE_FCOLOR = fg_color; + UGE_ROPALPHA = alpha_r; + UGE_SRCXY = src_x0; + UGE_DSTXY = dst_x0; + UGE_COMMAND = 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); +} +#endif + +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, +#ifdef CONFIG_PUV3_UNIGFX_HWACCEL + .fb_fillrect = unifb_fillrect, + .fb_copyarea = unifb_copyarea, + .fb_imageblit = unifb_imageblit, +#else + .fb_fillrect = sys_fillrect, + .fb_copyarea = sys_copyarea, + .fb_imageblit = sys_imageblit, +#endif + .fb_mmap = unifb_mmap, +}; + +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 > videomemorysize) + 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(NULL, "VGA_CLK"); + i = 0; + if (pixclk != 0) { + if (clk_set_rate(clk_vga, pixclk) == 0) + i = 1; + } + + if (i == 0) { /* set clock failed */ + info->fix = unifb_fix; + info->var = unifb_default; + clk_set_rate(clk_vga, unifb_default.pixclock); + } +#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; + } + + UDE_FSA = unifb_regs[0] = PKUNITY_UNIGFX_MMAP_BASE; + UDE_LS = unifb_regs[1] = info->var.yres; + UDE_PS = unifb_regs[2] = get_line_length(info->var.xres, + info->var.bits_per_pixel) >> 3; + /* >> 3 for hardware required. */ + UDE_HAT = unifb_regs[3] = (hTotal << 16) | (info->var.xres); + UDE_HBT = unifb_regs[4] = ((hTotal - 1) << 16) | (info->var.xres - 1); + UDE_HST = unifb_regs[5] = ((hSyncEnd - 1) << 16) | (hSyncStart - 1); + UDE_VAT = unifb_regs[6] = (vTotal << 16) | (info->var.yres); + UDE_VBT = unifb_regs[7] = ((vTotal - 1) << 16) | (info->var.yres - 1); + UDE_VST = unifb_regs[8] = ((vSyncEnd - 1) << 16) | (vSyncStart - 1); + UDE_CFG = unifb_regs[9] = UDE_CFG_GDEN_ENABLE | UDE_CFG_TIMEUP_ENABLE + | format | 0xC0000001; + + 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: + ((u32 *) (info->pseudo_palette))[regno] = v; + break; + case 24: + case 32: + ((u32 *) (info->pseudo_palette))[regno] = v; + break; + } + 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 + var->xres > info->var.xres_virtual || + var->yoffset + 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) +{ + unsigned long size = vma->vm_end - vma->vm_start; + unsigned long offset = vma->vm_pgoff << PAGE_SHIFT; + unsigned long pos = info->fix.smem_start + offset; + + if (offset + size > info->fix.smem_len) + return -EINVAL; + + vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); + + if (io_remap_pfn_range(vma, vma->vm_start, pos >> PAGE_SHIFT, size, + vma->vm_page_prot)) + return -EAGAIN; + + vma->vm_flags |= VM_RESERVED; /* avoid to swap out this VMA */ + return 0; + +} + +#ifndef MODULE +/* + * The virtual framebuffer driver is only enabled if explicitly + * requested by passing 'video=unifb:' (or any actual options). + */ +static int __init unifb_setup(char *options) +{ + char *this_opt; + + unifb_enable = 0; + + if (!options) + return 1; + + unifb_enable = 1; + + if (!*options) + return 1; + + while ((this_opt = strsep(&options, ",")) != NULL) { + if (!*this_opt) + continue; + /* Test disable for backwards compatibility */ + if (!strcmp(this_opt, "disable")) + unifb_enable = 0; + } + return 1; +} +#endif /* MODULE */ + + /* + * Initialisation + */ + +static int unifb_probe(struct platform_device *dev) +{ + struct fb_info *info; + int retval = -ENOMEM; + + /* + * For real video cards we use ioremap. + */ + videomemory = (void *)KUSER_UNIGFX_BASE; + + /* + * VFB could clear memory to prevent kernel info + * leakage into userspace and set black screen + * VGA-based drivers MUST NOT clear memory if + * they want to be able to take over vgacon + */ + /* memset(videomemory, 0, videomemorysize); */ + + 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, unifb_option, + unifb_modes, 10, &unifb_modes[0], 16); + + if (!retval || (retval == 4)) + info->var = unifb_default; + unifb_fix.smem_start = PKUNITY_UNIGFX_MMAP_BASE; + unifb_fix.smem_len = videomemorysize; + unifb_fix.mmio_start = PKUNITY_UNIGFX_BASE; + info->fix = unifb_fix; + info->pseudo_palette = info->par; + info->par = NULL; + info->flags = FBINFO_FLAG_DEFAULT; +#ifdef CONFIG_PUV3_UNIGFX_HWACCEL + info->fix.accel = FB_ACCEL_PUV3_UNIGFX; + info->flags |= FBINFO_HWACCEL_COPYAREA | FBINFO_HWACCEL_FILLRECT; +#else + info->flags |= FBINFO_HWACCEL_DISABLED; +#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); + + printk(KERN_INFO + "fb%d: Virtual frame buffer device, using %ldK of video memory\n", + info->node, videomemorysize >> 10); + 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; + + if (dev->dev.power.power_state.event == PM_EVENT_ON) + return 0; + + acquire_console_sem(); + + if (dev->dev.power.power_state.event == PM_EVENT_SUSPEND) { + UDE_FSA = unifb_regs[0]; + UDE_LS = unifb_regs[1]; + UDE_PS = unifb_regs[2]; + UDE_HAT = unifb_regs[3]; + UDE_HBT = unifb_regs[4]; + UDE_HST = unifb_regs[5]; + UDE_VAT = unifb_regs[6]; + UDE_VBT = unifb_regs[7]; + UDE_VST = unifb_regs[8]; + UDE_CFG = unifb_regs[9]; + } + dev->dev.power.power_state = PMSG_ON; + + release_console_sem(); + + return rc; +} + +static int unifb_suspend(struct platform_device *dev, pm_message_t mesg) +{ + 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; + } + + acquire_console_sem(); + + /* do nothing... */ + + release_console_sem(); + +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 = "unifb", + }, +}; + +static struct platform_device *unifb_device; + +static int __init unifb_init(void) +{ + int ret = 0; + +#ifndef MODULE + if (fb_get_options("unifb", &unifb_option)) + return -ENODEV; + unifb_setup(unifb_option); +#endif + + if (!unifb_enable) + return -ENXIO; + + ret = platform_driver_register(&unifb_driver); + + if (!ret) { + unifb_device = platform_device_alloc("unifb", 0); + + if (unifb_device) + ret = platform_device_add(unifb_device); + else + ret = -ENOMEM; + + if (ret) { + platform_device_put(unifb_device); + platform_driver_unregister(&unifb_driver); + } + } + + return ret; +} + +module_init(unifb_init); + +#ifdef MODULE +static void __exit unifb_exit(void) +{ + platform_device_unregister(unifb_device); + platform_driver_unregister(&unifb_driver); +} + +module_exit(unifb_exit); + +MODULE_LICENSE("GPL v2"); +#endif diff --git a/include/linux/fb.h b/include/linux/fb.h index d1631d3..4e9da1b 100644 --- a/include/linux/fb.h +++ b/include/linux/fb.h @@ -152,6 +152,8 @@ #define FB_ACCEL_PROSAVAGE_DDR 0x8d /* S3 ProSavage DDR */ #define FB_ACCEL_PROSAVAGE_DDRK 0x8e /* S3 ProSavage DDR-K */ +#define FB_ACCEL_PUV3_UNIGFX 0xa0 /* PKUnity-v3 Unigfx */ + struct fb_fix_screeninfo { char id[16]; /* identification string eg "TT Builtin" */ unsigned long smem_start; /* Start of frame buffer mem */ From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Guan Xuetao" Date: Sat, 22 Jan 2011 10:29:45 +0000 Subject: [PATCH] unicore32: add framebuffer driver for unigfx engine in PKUnity SoC Message-Id: <01cf01cbba1f$49f84130$dde8c390$@mprc.pku.edu.cn> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: linux-fbdev@vger.kernel.org Cc: linux-kernel@vger.kernel.org From: Guan Xuetao This patch adds framebuffer driver for unigfx engine in PKUnity SoC. 1. add CONFIG_FB_PUV3_UNIGFX for configuration and build 2. add FB_ACCEL_PUV3_UNIGFX definition in include/linux/fb.h 3. driver based on drivers/video/vfb.c Signed-off-by: Guan Xuetao --- drivers/video/Kconfig | 11 + drivers/video/Makefile | 1 + drivers/video/puv3_fb.c | 932 +++++++++++++++++++++++++++++++++++++++++++++++ include/linux/fb.h | 2 + 4 files changed, 946 insertions(+), 0 deletions(-) diff --git a/drivers/video/Kconfig b/drivers/video/Kconfig index 27c1fb4..13bf36e 100644 --- a/drivers/video/Kconfig +++ b/drivers/video/Kconfig @@ -2259,6 +2259,17 @@ config FB_JZ4740 help Framebuffer support for the JZ4740 SoC. +config FB_PUV3_UNIGFX + tristate "PKUnity v3 Unigfx framebuffer support" + depends on FB && UNICORE32 && ARCH_PUV3 + select FB_SYS_FILLRECT + select FB_SYS_COPYAREA + select FB_SYS_IMAGEBLIT + select FB_SYS_FOPS + help + Choose this option if you want to use the Unigfx device as a + framebuffer device. Without the support of PCI & AGP. + source "drivers/video/omap/Kconfig" source "drivers/video/omap2/Kconfig" diff --git a/drivers/video/Makefile b/drivers/video/Makefile index 485e8ed..45ecd11 100644 --- a/drivers/video/Makefile +++ b/drivers/video/Makefile @@ -134,6 +134,7 @@ obj-$(CONFIG_FB_MB862XX) += mb862xx/ obj-$(CONFIG_FB_MSM) += msm/ obj-$(CONFIG_FB_NUC900) += nuc900fb.o obj-$(CONFIG_FB_JZ4740) += jz4740_fb.o +obj-$(CONFIG_FB_PUV3_UNIGFX) += puv3_fb.o # Platform or fallback drivers go here obj-$(CONFIG_FB_UVESA) += uvesafb.o diff --git a/drivers/video/puv3_fb.c b/drivers/video/puv3_fb.c new file mode 100644 index 0000000..d938a73 --- /dev/null +++ b/drivers/video/puv3_fb.c @@ -0,0 +1,932 @@ +/* + * Frame Buffer Driver for PKUnity-v3 Unigfx + * Code specific to PKUnity SoC and UniCore ISA + * + * Maintained by GUAN Xue-tao + * 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 +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include +#include + +static char *unifb_option = NULL; +static unsigned long unifb_regs[10]; + +/* + * 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 }, +}; + +/* + * RAM we reserve for the frame buffer. This defines the maximum screen size + * + * The default can be overridden if the driver is compiled as a module + */ +#define VIDEOMEMSIZE (SZ_4M) /* 4 MB for 1024*768*32b */ + +static void *videomemory; +static u_long videomemorysize = VIDEOMEMSIZE; +module_param(videomemorysize, ulong, 0); + +static 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 int unifb_enable __initdata = 1; /* enable by default */ +module_param(unifb_enable, bool, 0); + +static int unifb_check_var(struct fb_var_screeninfo *var, + struct fb_info *info); +static int unifb_set_par(struct fb_info *info); +static int unifb_setcolreg(u_int regno, u_int red, u_int green, u_int blue, + u_int transp, struct fb_info *info); +static int unifb_pan_display(struct fb_var_screeninfo *var, + struct fb_info *info); +static int unifb_mmap(struct fb_info *info, + struct vm_area_struct *vma); + +#ifdef CONFIG_PUV3_UNIGFX_HWACCEL +static void unifb_sync(void) +{ + /* TODO: may, this can be replaced by interrupt */ + int cnt; + + for (cnt = 0; cnt < 0x10000000; cnt++) { + if (UGE_COMMAND & 0x1000000) + return; + } + + if (cnt > 0x8000000) + printk(KERN_WARNING "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(); + + UGE_FCOLOR = ((u32 *)(info->pseudo_palette))[fg_color]; + UGE_BCOLOR = 0; + UGE_PITCH = src_pitch; + UGE_SRCSTART = src_offset; + UGE_DSTSTART = dst_offset; + UGE_WIDHEIGHT = awidth; + UGE_CLIP0 = top; + UGE_CLIP1 = bottom; + UGE_ROPALPHA = alpha_r; + UGE_SRCXY = src_x0; + UGE_DSTXY = dst_x0; + UGE_COMMAND = 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(); + + UGE_PITCH = src_pitch; + UGE_SRCSTART = src_offset; + UGE_DSTSTART = dst_offset; + UGE_WIDHEIGHT = awidth; + UGE_CLIP0 = top; + UGE_CLIP1 = bottom; + UGE_BCOLOR = bg_color; + UGE_FCOLOR = fg_color; + UGE_ROPALPHA = alpha_r; + UGE_SRCXY = src_x0; + UGE_DSTXY = dst_x0; + UGE_COMMAND = 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); +} +#endif + +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, +#ifdef CONFIG_PUV3_UNIGFX_HWACCEL + .fb_fillrect = unifb_fillrect, + .fb_copyarea = unifb_copyarea, + .fb_imageblit = unifb_imageblit, +#else + .fb_fillrect = sys_fillrect, + .fb_copyarea = sys_copyarea, + .fb_imageblit = sys_imageblit, +#endif + .fb_mmap = unifb_mmap, +}; + +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 > videomemorysize) + 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(NULL, "VGA_CLK"); + i = 0; + if (pixclk != 0) { + if (clk_set_rate(clk_vga, pixclk) = 0) + i = 1; + } + + if (i = 0) { /* set clock failed */ + info->fix = unifb_fix; + info->var = unifb_default; + clk_set_rate(clk_vga, unifb_default.pixclock); + } +#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; + } + + UDE_FSA = unifb_regs[0] = PKUNITY_UNIGFX_MMAP_BASE; + UDE_LS = unifb_regs[1] = info->var.yres; + UDE_PS = unifb_regs[2] = get_line_length(info->var.xres, + info->var.bits_per_pixel) >> 3; + /* >> 3 for hardware required. */ + UDE_HAT = unifb_regs[3] = (hTotal << 16) | (info->var.xres); + UDE_HBT = unifb_regs[4] = ((hTotal - 1) << 16) | (info->var.xres - 1); + UDE_HST = unifb_regs[5] = ((hSyncEnd - 1) << 16) | (hSyncStart - 1); + UDE_VAT = unifb_regs[6] = (vTotal << 16) | (info->var.yres); + UDE_VBT = unifb_regs[7] = ((vTotal - 1) << 16) | (info->var.yres - 1); + UDE_VST = unifb_regs[8] = ((vSyncEnd - 1) << 16) | (vSyncStart - 1); + UDE_CFG = unifb_regs[9] = UDE_CFG_GDEN_ENABLE | UDE_CFG_TIMEUP_ENABLE + | format | 0xC0000001; + + 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: + ((u32 *) (info->pseudo_palette))[regno] = v; + break; + case 24: + case 32: + ((u32 *) (info->pseudo_palette))[regno] = v; + break; + } + 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 + var->xres > info->var.xres_virtual || + var->yoffset + 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) +{ + unsigned long size = vma->vm_end - vma->vm_start; + unsigned long offset = vma->vm_pgoff << PAGE_SHIFT; + unsigned long pos = info->fix.smem_start + offset; + + if (offset + size > info->fix.smem_len) + return -EINVAL; + + vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); + + if (io_remap_pfn_range(vma, vma->vm_start, pos >> PAGE_SHIFT, size, + vma->vm_page_prot)) + return -EAGAIN; + + vma->vm_flags |= VM_RESERVED; /* avoid to swap out this VMA */ + return 0; + +} + +#ifndef MODULE +/* + * The virtual framebuffer driver is only enabled if explicitly + * requested by passing 'video=unifb:' (or any actual options). + */ +static int __init unifb_setup(char *options) +{ + char *this_opt; + + unifb_enable = 0; + + if (!options) + return 1; + + unifb_enable = 1; + + if (!*options) + return 1; + + while ((this_opt = strsep(&options, ",")) != NULL) { + if (!*this_opt) + continue; + /* Test disable for backwards compatibility */ + if (!strcmp(this_opt, "disable")) + unifb_enable = 0; + } + return 1; +} +#endif /* MODULE */ + + /* + * Initialisation + */ + +static int unifb_probe(struct platform_device *dev) +{ + struct fb_info *info; + int retval = -ENOMEM; + + /* + * For real video cards we use ioremap. + */ + videomemory = (void *)KUSER_UNIGFX_BASE; + + /* + * VFB could clear memory to prevent kernel info + * leakage into userspace and set black screen + * VGA-based drivers MUST NOT clear memory if + * they want to be able to take over vgacon + */ + /* memset(videomemory, 0, videomemorysize); */ + + 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, unifb_option, + unifb_modes, 10, &unifb_modes[0], 16); + + if (!retval || (retval = 4)) + info->var = unifb_default; + unifb_fix.smem_start = PKUNITY_UNIGFX_MMAP_BASE; + unifb_fix.smem_len = videomemorysize; + unifb_fix.mmio_start = PKUNITY_UNIGFX_BASE; + info->fix = unifb_fix; + info->pseudo_palette = info->par; + info->par = NULL; + info->flags = FBINFO_FLAG_DEFAULT; +#ifdef CONFIG_PUV3_UNIGFX_HWACCEL + info->fix.accel = FB_ACCEL_PUV3_UNIGFX; + info->flags |= FBINFO_HWACCEL_COPYAREA | FBINFO_HWACCEL_FILLRECT; +#else + info->flags |= FBINFO_HWACCEL_DISABLED; +#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); + + printk(KERN_INFO + "fb%d: Virtual frame buffer device, using %ldK of video memory\n", + info->node, videomemorysize >> 10); + 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; + + if (dev->dev.power.power_state.event = PM_EVENT_ON) + return 0; + + acquire_console_sem(); + + if (dev->dev.power.power_state.event = PM_EVENT_SUSPEND) { + UDE_FSA = unifb_regs[0]; + UDE_LS = unifb_regs[1]; + UDE_PS = unifb_regs[2]; + UDE_HAT = unifb_regs[3]; + UDE_HBT = unifb_regs[4]; + UDE_HST = unifb_regs[5]; + UDE_VAT = unifb_regs[6]; + UDE_VBT = unifb_regs[7]; + UDE_VST = unifb_regs[8]; + UDE_CFG = unifb_regs[9]; + } + dev->dev.power.power_state = PMSG_ON; + + release_console_sem(); + + return rc; +} + +static int unifb_suspend(struct platform_device *dev, pm_message_t mesg) +{ + 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; + } + + acquire_console_sem(); + + /* do nothing... */ + + release_console_sem(); + +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 = "unifb", + }, +}; + +static struct platform_device *unifb_device; + +static int __init unifb_init(void) +{ + int ret = 0; + +#ifndef MODULE + if (fb_get_options("unifb", &unifb_option)) + return -ENODEV; + unifb_setup(unifb_option); +#endif + + if (!unifb_enable) + return -ENXIO; + + ret = platform_driver_register(&unifb_driver); + + if (!ret) { + unifb_device = platform_device_alloc("unifb", 0); + + if (unifb_device) + ret = platform_device_add(unifb_device); + else + ret = -ENOMEM; + + if (ret) { + platform_device_put(unifb_device); + platform_driver_unregister(&unifb_driver); + } + } + + return ret; +} + +module_init(unifb_init); + +#ifdef MODULE +static void __exit unifb_exit(void) +{ + platform_device_unregister(unifb_device); + platform_driver_unregister(&unifb_driver); +} + +module_exit(unifb_exit); + +MODULE_LICENSE("GPL v2"); +#endif diff --git a/include/linux/fb.h b/include/linux/fb.h index d1631d3..4e9da1b 100644 --- a/include/linux/fb.h +++ b/include/linux/fb.h @@ -152,6 +152,8 @@ #define FB_ACCEL_PROSAVAGE_DDR 0x8d /* S3 ProSavage DDR */ #define FB_ACCEL_PROSAVAGE_DDRK 0x8e /* S3 ProSavage DDR-K */ +#define FB_ACCEL_PUV3_UNIGFX 0xa0 /* PKUnity-v3 Unigfx */ + struct fb_fix_screeninfo { char id[16]; /* identification string eg "TT Builtin" */ unsigned long smem_start; /* Start of frame buffer mem */