diff options
Diffstat (limited to 'ANDROID_3.4.5/drivers/video/hgafb.c')
| -rw-r--r-- | ANDROID_3.4.5/drivers/video/hgafb.c | 668 |
1 files changed, 0 insertions, 668 deletions
diff --git a/ANDROID_3.4.5/drivers/video/hgafb.c b/ANDROID_3.4.5/drivers/video/hgafb.c deleted file mode 100644 index c645f928..00000000 --- a/ANDROID_3.4.5/drivers/video/hgafb.c +++ /dev/null @@ -1,668 +0,0 @@ -/* - * linux/drivers/video/hgafb.c -- Hercules graphics adaptor frame buffer device - * - * Created 25 Nov 1999 by Ferenc Bakonyi (fero@drama.obuda.kando.hu) - * Based on skeletonfb.c by Geert Uytterhoeven and - * mdacon.c by Andrew Apted - * - * History: - * - * - Revision 0.1.8 (23 Oct 2002): Ported to new framebuffer api. - * - * - Revision 0.1.7 (23 Jan 2001): fix crash resulting from MDA only cards - * being detected as Hercules. (Paul G.) - * - Revision 0.1.6 (17 Aug 2000): new style structs - * documentation - * - Revision 0.1.5 (13 Mar 2000): spinlocks instead of saveflags();cli();etc - * minor fixes - * - Revision 0.1.4 (24 Jan 2000): fixed a bug in hga_card_detect() for - * HGA-only systems - * - Revision 0.1.3 (22 Jan 2000): modified for the new fb_info structure - * screen is cleared after rmmod - * virtual resolutions - * module parameter 'nologo={0|1}' - * the most important: boot logo :) - * - Revision 0.1.0 (6 Dec 1999): faster scrolling and minor fixes - * - First release (25 Nov 1999) - * - * This file is subject to the terms and conditions of the GNU General Public - * License. See the file COPYING in the main directory of this archive - * for more details. - */ - -#include <linux/module.h> -#include <linux/kernel.h> -#include <linux/errno.h> -#include <linux/spinlock.h> -#include <linux/string.h> -#include <linux/mm.h> -#include <linux/delay.h> -#include <linux/fb.h> -#include <linux/init.h> -#include <linux/ioport.h> -#include <linux/platform_device.h> -#include <asm/io.h> -#include <asm/vga.h> - -#if 0 -#define DPRINTK(args...) printk(KERN_DEBUG __FILE__": " ##args) -#else -#define DPRINTK(args...) -#endif - -#if 0 -#define CHKINFO(ret) if (info != &fb_info) { printk(KERN_DEBUG __FILE__": This should never happen, line:%d \n", __LINE__); return ret; } -#else -#define CHKINFO(ret) -#endif - -/* Description of the hardware layout */ - -static void __iomem *hga_vram; /* Base of video memory */ -static unsigned long hga_vram_len; /* Size of video memory */ - -#define HGA_ROWADDR(row) ((row%4)*8192 + (row>>2)*90) -#define HGA_TXT 0 -#define HGA_GFX 1 - -static inline u8 __iomem * rowaddr(struct fb_info *info, u_int row) -{ - return info->screen_base + HGA_ROWADDR(row); -} - -static int hga_mode = -1; /* 0 = txt, 1 = gfx mode */ - -static enum { TYPE_HERC, TYPE_HERCPLUS, TYPE_HERCCOLOR } hga_type; -static char *hga_type_name; - -#define HGA_INDEX_PORT 0x3b4 /* Register select port */ -#define HGA_VALUE_PORT 0x3b5 /* Register value port */ -#define HGA_MODE_PORT 0x3b8 /* Mode control port */ -#define HGA_STATUS_PORT 0x3ba /* Status and Config port */ -#define HGA_GFX_PORT 0x3bf /* Graphics control port */ - -/* HGA register values */ - -#define HGA_CURSOR_BLINKING 0x00 -#define HGA_CURSOR_OFF 0x20 -#define HGA_CURSOR_SLOWBLINK 0x60 - -#define HGA_MODE_GRAPHICS 0x02 -#define HGA_MODE_VIDEO_EN 0x08 -#define HGA_MODE_BLINK_EN 0x20 -#define HGA_MODE_GFX_PAGE1 0x80 - -#define HGA_STATUS_HSYNC 0x01 -#define HGA_STATUS_VSYNC 0x80 -#define HGA_STATUS_VIDEO 0x08 - -#define HGA_CONFIG_COL132 0x08 -#define HGA_GFX_MODE_EN 0x01 -#define HGA_GFX_PAGE_EN 0x02 - -/* Global locks */ - -static DEFINE_SPINLOCK(hga_reg_lock); - -/* Framebuffer driver structures */ - -static struct fb_var_screeninfo hga_default_var __devinitdata = { - .xres = 720, - .yres = 348, - .xres_virtual = 720, - .yres_virtual = 348, - .bits_per_pixel = 1, - .red = {0, 1, 0}, - .green = {0, 1, 0}, - .blue = {0, 1, 0}, - .transp = {0, 0, 0}, - .height = -1, - .width = -1, -}; - -static struct fb_fix_screeninfo hga_fix __devinitdata = { - .id = "HGA", - .type = FB_TYPE_PACKED_PIXELS, /* (not sure) */ - .visual = FB_VISUAL_MONO10, - .xpanstep = 8, - .ypanstep = 8, - .line_length = 90, - .accel = FB_ACCEL_NONE -}; - -/* Don't assume that tty1 will be the initial current console. */ -static int release_io_port = 0; -static int release_io_ports = 0; -static bool nologo = 0; - -/* ------------------------------------------------------------------------- - * - * Low level hardware functions - * - * ------------------------------------------------------------------------- */ - -static void write_hga_b(unsigned int val, unsigned char reg) -{ - outb_p(reg, HGA_INDEX_PORT); - outb_p(val, HGA_VALUE_PORT); -} - -static void write_hga_w(unsigned int val, unsigned char reg) -{ - outb_p(reg, HGA_INDEX_PORT); outb_p(val >> 8, HGA_VALUE_PORT); - outb_p(reg+1, HGA_INDEX_PORT); outb_p(val & 0xff, HGA_VALUE_PORT); -} - -static int test_hga_b(unsigned char val, unsigned char reg) -{ - outb_p(reg, HGA_INDEX_PORT); - outb (val, HGA_VALUE_PORT); - udelay(20); val = (inb_p(HGA_VALUE_PORT) == val); - return val; -} - -static void hga_clear_screen(void) -{ - unsigned char fillchar = 0xbf; /* magic */ - unsigned long flags; - - spin_lock_irqsave(&hga_reg_lock, flags); - if (hga_mode == HGA_TXT) - fillchar = ' '; - else if (hga_mode == HGA_GFX) - fillchar = 0x00; - spin_unlock_irqrestore(&hga_reg_lock, flags); - if (fillchar != 0xbf) - memset_io(hga_vram, fillchar, hga_vram_len); -} - -static void hga_txt_mode(void) -{ - unsigned long flags; - - spin_lock_irqsave(&hga_reg_lock, flags); - outb_p(HGA_MODE_VIDEO_EN | HGA_MODE_BLINK_EN, HGA_MODE_PORT); - outb_p(0x00, HGA_GFX_PORT); - outb_p(0x00, HGA_STATUS_PORT); - - write_hga_b(0x61, 0x00); /* horizontal total */ - write_hga_b(0x50, 0x01); /* horizontal displayed */ - write_hga_b(0x52, 0x02); /* horizontal sync pos */ - write_hga_b(0x0f, 0x03); /* horizontal sync width */ - - write_hga_b(0x19, 0x04); /* vertical total */ - write_hga_b(0x06, 0x05); /* vertical total adjust */ - write_hga_b(0x19, 0x06); /* vertical displayed */ - write_hga_b(0x19, 0x07); /* vertical sync pos */ - - write_hga_b(0x02, 0x08); /* interlace mode */ - write_hga_b(0x0d, 0x09); /* maximum scanline */ - write_hga_b(0x0c, 0x0a); /* cursor start */ - write_hga_b(0x0d, 0x0b); /* cursor end */ - - write_hga_w(0x0000, 0x0c); /* start address */ - write_hga_w(0x0000, 0x0e); /* cursor location */ - - hga_mode = HGA_TXT; - spin_unlock_irqrestore(&hga_reg_lock, flags); -} - -static void hga_gfx_mode(void) -{ - unsigned long flags; - - spin_lock_irqsave(&hga_reg_lock, flags); - outb_p(0x00, HGA_STATUS_PORT); - outb_p(HGA_GFX_MODE_EN, HGA_GFX_PORT); - outb_p(HGA_MODE_VIDEO_EN | HGA_MODE_GRAPHICS, HGA_MODE_PORT); - - write_hga_b(0x35, 0x00); /* horizontal total */ - write_hga_b(0x2d, 0x01); /* horizontal displayed */ - write_hga_b(0x2e, 0x02); /* horizontal sync pos */ - write_hga_b(0x07, 0x03); /* horizontal sync width */ - - write_hga_b(0x5b, 0x04); /* vertical total */ - write_hga_b(0x02, 0x05); /* vertical total adjust */ - write_hga_b(0x57, 0x06); /* vertical displayed */ - write_hga_b(0x57, 0x07); /* vertical sync pos */ - - write_hga_b(0x02, 0x08); /* interlace mode */ - write_hga_b(0x03, 0x09); /* maximum scanline */ - write_hga_b(0x00, 0x0a); /* cursor start */ - write_hga_b(0x00, 0x0b); /* cursor end */ - - write_hga_w(0x0000, 0x0c); /* start address */ - write_hga_w(0x0000, 0x0e); /* cursor location */ - - hga_mode = HGA_GFX; - spin_unlock_irqrestore(&hga_reg_lock, flags); -} - -static void hga_show_logo(struct fb_info *info) -{ -/* - void __iomem *dest = hga_vram; - char *logo = linux_logo_bw; - int x, y; - - for (y = 134; y < 134 + 80 ; y++) * this needs some cleanup * - for (x = 0; x < 10 ; x++) - writeb(~*(logo++),(dest + HGA_ROWADDR(y) + x + 40)); -*/ -} - -static void hga_pan(unsigned int xoffset, unsigned int yoffset) -{ - unsigned int base; - unsigned long flags; - - base = (yoffset / 8) * 90 + xoffset; - spin_lock_irqsave(&hga_reg_lock, flags); - write_hga_w(base, 0x0c); /* start address */ - spin_unlock_irqrestore(&hga_reg_lock, flags); - DPRINTK("hga_pan: base:%d\n", base); -} - -static void hga_blank(int blank_mode) -{ - unsigned long flags; - - spin_lock_irqsave(&hga_reg_lock, flags); - if (blank_mode) { - outb_p(0x00, HGA_MODE_PORT); /* disable video */ - } else { - outb_p(HGA_MODE_VIDEO_EN | HGA_MODE_GRAPHICS, HGA_MODE_PORT); - } - spin_unlock_irqrestore(&hga_reg_lock, flags); -} - -static int __devinit hga_card_detect(void) -{ - int count = 0; - void __iomem *p, *q; - unsigned short p_save, q_save; - - hga_vram_len = 0x08000; - - hga_vram = ioremap(0xb0000, hga_vram_len); - - if (request_region(0x3b0, 12, "hgafb")) - release_io_ports = 1; - if (request_region(0x3bf, 1, "hgafb")) - release_io_port = 1; - - /* do a memory check */ - - p = hga_vram; - q = hga_vram + 0x01000; - - p_save = readw(p); q_save = readw(q); - - writew(0xaa55, p); if (readw(p) == 0xaa55) count++; - writew(0x55aa, p); if (readw(p) == 0x55aa) count++; - writew(p_save, p); - - if (count != 2) - goto error; - - /* Ok, there is definitely a card registering at the correct - * memory location, so now we do an I/O port test. - */ - - if (!test_hga_b(0x66, 0x0f)) /* cursor low register */ - goto error; - - if (!test_hga_b(0x99, 0x0f)) /* cursor low register */ - goto error; - - /* See if the card is a Hercules, by checking whether the vsync - * bit of the status register is changing. This test lasts for - * approximately 1/10th of a second. - */ - - p_save = q_save = inb_p(HGA_STATUS_PORT) & HGA_STATUS_VSYNC; - - for (count=0; count < 50000 && p_save == q_save; count++) { - q_save = inb(HGA_STATUS_PORT) & HGA_STATUS_VSYNC; - udelay(2); - } - - if (p_save == q_save) - goto error; - - switch (inb_p(HGA_STATUS_PORT) & 0x70) { - case 0x10: - hga_type = TYPE_HERCPLUS; - hga_type_name = "HerculesPlus"; - break; - case 0x50: - hga_type = TYPE_HERCCOLOR; - hga_type_name = "HerculesColor"; - break; - default: - hga_type = TYPE_HERC; - hga_type_name = "Hercules"; - break; - } - return 1; -error: - if (release_io_ports) - release_region(0x3b0, 12); - if (release_io_port) - release_region(0x3bf, 1); - return 0; -} - -/** - * hgafb_open - open the framebuffer device - * @info:pointer to fb_info object containing info for current hga board - * @int:open by console system or userland. - */ - -static int hgafb_open(struct fb_info *info, int init) -{ - hga_gfx_mode(); - hga_clear_screen(); - if (!nologo) hga_show_logo(info); - return 0; -} - -/** - * hgafb_open - open the framebuffer device - * @info:pointer to fb_info object containing info for current hga board - * @int:open by console system or userland. - */ - -static int hgafb_release(struct fb_info *info, int init) -{ - hga_txt_mode(); - hga_clear_screen(); - return 0; -} - -/** - * hgafb_setcolreg - set color registers - * @regno:register index to set - * @red:red value, unused - * @green:green value, unused - * @blue:blue value, unused - * @transp:transparency value, unused - * @info:unused - * - * This callback function is used to set the color registers of a HGA - * board. Since we have only two fixed colors only @regno is checked. - * A zero is returned on success and 1 for failure. - */ - -static int hgafb_setcolreg(u_int regno, u_int red, u_int green, u_int blue, - u_int transp, struct fb_info *info) -{ - if (regno > 1) - return 1; - return 0; -} - -/** - * hga_pan_display - pan or wrap the display - * @var:contains new xoffset, yoffset and vmode values - * @info:pointer to fb_info object containing info for current hga board - * - * This function looks only at xoffset, yoffset and the %FB_VMODE_YWRAP - * flag in @var. If input parameters are correct it calls hga_pan() to - * program the hardware. @info->var is updated to the new values. - * A zero is returned on success and %-EINVAL for failure. - */ - -static int hgafb_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 - || var->yoffset % 8) - return -EINVAL; - } - - hga_pan(var->xoffset, var->yoffset); - return 0; -} - -/** - * hgafb_blank - (un)blank the screen - * @blank_mode:blanking method to use - * @info:unused - * - * Blank the screen if blank_mode != 0, else unblank. - * Implements VESA suspend and powerdown modes on hardware that supports - * disabling hsync/vsync: - * @blank_mode == 2 means suspend vsync, - * @blank_mode == 3 means suspend hsync, - * @blank_mode == 4 means powerdown. - */ - -static int hgafb_blank(int blank_mode, struct fb_info *info) -{ - hga_blank(blank_mode); - return 0; -} - -/* - * Accel functions - */ -static void hgafb_fillrect(struct fb_info *info, const struct fb_fillrect *rect) -{ - u_int rows, y; - u8 __iomem *dest; - - y = rect->dy; - - for (rows = rect->height; rows--; y++) { - dest = rowaddr(info, y) + (rect->dx >> 3); - switch (rect->rop) { - case ROP_COPY: - memset_io(dest, rect->color, (rect->width >> 3)); - break; - case ROP_XOR: - fb_writeb(~(fb_readb(dest)), dest); - break; - } - } -} - -static void hgafb_copyarea(struct fb_info *info, const struct fb_copyarea *area) -{ - u_int rows, y1, y2; - u8 __iomem *src; - u8 __iomem *dest; - - if (area->dy <= area->sy) { - y1 = area->sy; - y2 = area->dy; - - for (rows = area->height; rows--; ) { - src = rowaddr(info, y1) + (area->sx >> 3); - dest = rowaddr(info, y2) + (area->dx >> 3); - memmove(dest, src, (area->width >> 3)); - y1++; - y2++; - } - } else { - y1 = area->sy + area->height - 1; - y2 = area->dy + area->height - 1; - - for (rows = area->height; rows--;) { - src = rowaddr(info, y1) + (area->sx >> 3); - dest = rowaddr(info, y2) + (area->dx >> 3); - memmove(dest, src, (area->width >> 3)); - y1--; - y2--; - } - } -} - -static void hgafb_imageblit(struct fb_info *info, const struct fb_image *image) -{ - u8 __iomem *dest; - u8 *cdat = (u8 *) image->data; - u_int rows, y = image->dy; - u_int x; - u8 d; - - for (rows = image->height; rows--; y++) { - for (x = 0; x < image->width; x+= 8) { - d = *cdat++; - dest = rowaddr(info, y) + ((image->dx + x)>> 3); - fb_writeb(d, dest); - } - } -} - -static struct fb_ops hgafb_ops = { - .owner = THIS_MODULE, - .fb_open = hgafb_open, - .fb_release = hgafb_release, - .fb_setcolreg = hgafb_setcolreg, - .fb_pan_display = hgafb_pan_display, - .fb_blank = hgafb_blank, - .fb_fillrect = hgafb_fillrect, - .fb_copyarea = hgafb_copyarea, - .fb_imageblit = hgafb_imageblit, -}; - -/* ------------------------------------------------------------------------- * - * - * Functions in fb_info - * - * ------------------------------------------------------------------------- */ - -/* ------------------------------------------------------------------------- */ - - /* - * Initialization - */ - -static int __devinit hgafb_probe(struct platform_device *pdev) -{ - struct fb_info *info; - - if (! hga_card_detect()) { - printk(KERN_INFO "hgafb: HGA card not detected.\n"); - if (hga_vram) - iounmap(hga_vram); - return -EINVAL; - } - - printk(KERN_INFO "hgafb: %s with %ldK of memory detected.\n", - hga_type_name, hga_vram_len/1024); - - info = framebuffer_alloc(0, &pdev->dev); - if (!info) { - iounmap(hga_vram); - return -ENOMEM; - } - - hga_fix.smem_start = (unsigned long)hga_vram; - hga_fix.smem_len = hga_vram_len; - - info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_YPAN; - info->var = hga_default_var; - info->fix = hga_fix; - info->monspecs.hfmin = 0; - info->monspecs.hfmax = 0; - info->monspecs.vfmin = 10000; - info->monspecs.vfmax = 10000; - info->monspecs.dpms = 0; - info->fbops = &hgafb_ops; - info->screen_base = hga_vram; - - if (register_framebuffer(info) < 0) { - framebuffer_release(info); - iounmap(hga_vram); - return -EINVAL; - } - - printk(KERN_INFO "fb%d: %s frame buffer device\n", - info->node, info->fix.id); - platform_set_drvdata(pdev, info); - return 0; -} - -static int __devexit hgafb_remove(struct platform_device *pdev) -{ - struct fb_info *info = platform_get_drvdata(pdev); - - hga_txt_mode(); - hga_clear_screen(); - - if (info) { - unregister_framebuffer(info); - framebuffer_release(info); - } - - iounmap(hga_vram); - - if (release_io_ports) - release_region(0x3b0, 12); - - if (release_io_port) - release_region(0x3bf, 1); - - return 0; -} - -static struct platform_driver hgafb_driver = { - .probe = hgafb_probe, - .remove = __devexit_p(hgafb_remove), - .driver = { - .name = "hgafb", - }, -}; - -static struct platform_device *hgafb_device; - -static int __init hgafb_init(void) -{ - int ret; - - if (fb_get_options("hgafb", NULL)) - return -ENODEV; - - ret = platform_driver_register(&hgafb_driver); - - if (!ret) { - hgafb_device = platform_device_register_simple("hgafb", 0, NULL, 0); - - if (IS_ERR(hgafb_device)) { - platform_driver_unregister(&hgafb_driver); - ret = PTR_ERR(hgafb_device); - } - } - - return ret; -} - -static void __exit hgafb_exit(void) -{ - platform_device_unregister(hgafb_device); - platform_driver_unregister(&hgafb_driver); -} - -/* ------------------------------------------------------------------------- - * - * Modularization - * - * ------------------------------------------------------------------------- */ - -MODULE_AUTHOR("Ferenc Bakonyi (fero@drama.obuda.kando.hu)"); -MODULE_DESCRIPTION("FBDev driver for Hercules Graphics Adaptor"); -MODULE_LICENSE("GPL"); - -module_param(nologo, bool, 0); -MODULE_PARM_DESC(nologo, "Disables startup logo if != 0 (default=0)"); -module_init(hgafb_init); -module_exit(hgafb_exit); |