diff options
Diffstat (limited to 'drivers/video/geode/gx1fb_core.c')
| -rw-r--r-- | drivers/video/geode/gx1fb_core.c | 359 |
1 files changed, 0 insertions, 359 deletions
diff --git a/drivers/video/geode/gx1fb_core.c b/drivers/video/geode/gx1fb_core.c deleted file mode 100644 index 83830d24bcd..00000000000 --- a/drivers/video/geode/gx1fb_core.c +++ /dev/null @@ -1,359 +0,0 @@ -/* - * drivers/video/geode/gx1fb_core.c - * -- Geode GX1 framebuffer driver - * - * Copyright (C) 2005 Arcom Control Systems Ltd. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - */ - -#include <linux/module.h> -#include <linux/kernel.h> -#include <linux/errno.h> -#include <linux/string.h> -#include <linux/mm.h> -#include <linux/tty.h> -#include <linux/slab.h> -#include <linux/delay.h> -#include <linux/fb.h> -#include <linux/init.h> -#include <linux/pci.h> - -#include "geodefb.h" -#include "display_gx1.h" -#include "video_cs5530.h" - -static char mode_option[32] = "640x480-16@60"; -static int crt_option = 1; -static char panel_option[32] = ""; - -static int gx1_line_delta(int xres, int bpp) -{ - int line_delta = xres * (bpp >> 3); - - if (line_delta > 2048) - line_delta = 4096; - else if (line_delta > 1024) - line_delta = 2048; - else - line_delta = 1024; - return line_delta; -} - -static int gx1fb_check_var(struct fb_var_screeninfo *var, struct fb_info *info) -{ - struct geodefb_par *par = info->par; - - printk(KERN_DEBUG "%s()\n", __FUNCTION__); - - /* Maximum resolution is 1280x1024. */ - if (var->xres > 1280 || var->yres > 1024) - return -EINVAL; - - if (par->panel_x && (var->xres > par->panel_x || var->yres > par->panel_y)) - return -EINVAL; - - /* Only 16 bpp and 8 bpp is supported by the hardware. */ - if (var->bits_per_pixel == 16) { - 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; - } else if (var->bits_per_pixel == 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; - } else - return -EINVAL; - - /* Enough video memory? */ - if (gx1_line_delta(var->xres, var->bits_per_pixel) * var->yres > info->fix.smem_len) - return -EINVAL; - - /* FIXME: Check timing parameters here? */ - - return 0; -} - -static int gx1fb_set_par(struct fb_info *info) -{ - struct geodefb_par *par = info->par; - - if (info->var.bits_per_pixel == 16) { - info->fix.visual = FB_VISUAL_TRUECOLOR; - fb_dealloc_cmap(&info->cmap); - } else { - info->fix.visual = FB_VISUAL_PSEUDOCOLOR; - fb_alloc_cmap(&info->cmap, 1<<info->var.bits_per_pixel, 0); - } - - info->fix.line_length = gx1_line_delta(info->var.xres, info->var.bits_per_pixel); - - par->dc_ops->set_mode(info); - - return 0; -} - -static inline u_int chan_to_field(u_int chan, struct fb_bitfield *bf) -{ - chan &= 0xffff; - chan >>= 16 - bf->length; - return chan << bf->offset; -} - -static int gx1fb_setcolreg(unsigned regno, unsigned red, unsigned green, - unsigned blue, unsigned transp, - struct fb_info *info) -{ - struct geodefb_par *par = info->par; - - if (info->var.grayscale) { - /* grayscale = 0.30*R + 0.59*G + 0.11*B */ - red = green = blue = (red * 77 + green * 151 + blue * 28) >> 8; - } - - /* Truecolor has hardware independent palette */ - if (info->fix.visual == FB_VISUAL_TRUECOLOR) { - u32 *pal = info->pseudo_palette; - u32 v; - - if (regno >= 16) - return -EINVAL; - - v = chan_to_field(red, &info->var.red); - v |= chan_to_field(green, &info->var.green); - v |= chan_to_field(blue, &info->var.blue); - - pal[regno] = v; - } else { - if (regno >= 256) - return -EINVAL; - - par->dc_ops->set_palette_reg(info, regno, red, green, blue); - } - - return 0; -} - -static int gx1fb_blank(int blank_mode, struct fb_info *info) -{ - struct geodefb_par *par = info->par; - - return par->vid_ops->blank_display(info, blank_mode); -} - -static int __init gx1fb_map_video_memory(struct fb_info *info) -{ - struct geodefb_par *par = info->par; - unsigned gx_base; - int fb_len; - - gx_base = gx1_gx_base(); - if (!gx_base) - return -ENODEV; - - par->vid_dev = pci_get_device(PCI_VENDOR_ID_CYRIX, - PCI_DEVICE_ID_CYRIX_5530_VIDEO, NULL); - if (!par->vid_dev) - return -ENODEV; - - par->vid_regs = ioremap(pci_resource_start(par->vid_dev, 1), - pci_resource_len(par->vid_dev, 1)); - if (!par->vid_regs) - return -ENOMEM; - - par->dc_regs = ioremap(gx_base + 0x8300, 0x100); - if (!par->dc_regs) - return -ENOMEM; - - info->fix.smem_start = gx_base + 0x800000; - if ((fb_len = gx1_frame_buffer_size()) < 0) - return -ENOMEM; - info->fix.smem_len = fb_len; - info->screen_base = ioremap(info->fix.smem_start, info->fix.smem_len); - if (!info->screen_base) - return -ENOMEM; - - printk(KERN_INFO "%s: %d Kibyte of video memory at 0x%lx\n", - info->fix.id, info->fix.smem_len / 1024, info->fix.smem_start); - - return 0; -} - -static int parse_panel_option(struct fb_info *info) -{ - struct geodefb_par *par = info->par; - - if (strcmp(panel_option, "") != 0) { - int x, y; - char *s; - x = simple_strtol(panel_option, &s, 10); - if (!x) - return -EINVAL; - y = simple_strtol(s + 1, NULL, 10); - if (!y) - return -EINVAL; - par->panel_x = x; - par->panel_y = y; - } - return 0; -} - -static struct fb_ops gx1fb_ops = { - .owner = THIS_MODULE, - .fb_check_var = gx1fb_check_var, - .fb_set_par = gx1fb_set_par, - .fb_setcolreg = gx1fb_setcolreg, - .fb_blank = gx1fb_blank, - /* No HW acceleration for now. */ - .fb_fillrect = cfb_fillrect, - .fb_copyarea = cfb_copyarea, - .fb_imageblit = cfb_imageblit, - .fb_cursor = soft_cursor, -}; - -static struct fb_info * __init gx1fb_init_fbinfo(void) -{ - struct fb_info *info; - struct geodefb_par *par; - - /* Alloc enough space for the pseudo palette. */ - info = framebuffer_alloc(sizeof(struct geodefb_par) + sizeof(u32) * 16, NULL); - if (!info) - return NULL; - - par = info->par; - - strcpy(info->fix.id, "GX1"); - - info->fix.type = FB_TYPE_PACKED_PIXELS; - info->fix.type_aux = 0; - info->fix.xpanstep = 0; - info->fix.ypanstep = 0; - info->fix.ywrapstep = 0; - info->fix.accel = FB_ACCEL_NONE; - - info->var.nonstd = 0; - info->var.activate = FB_ACTIVATE_NOW; - info->var.height = -1; - info->var.width = -1; - info->var.accel_flags = 0; - info->var.vmode = FB_VMODE_NONINTERLACED; - - info->fbops = &gx1fb_ops; - info->flags = FBINFO_DEFAULT; - info->node = -1; - - info->pseudo_palette = (void *)par + sizeof(struct geodefb_par); - - info->var.grayscale = 0; - - /* CRT and panel options */ - par->enable_crt = crt_option; - if (parse_panel_option(info) < 0) - printk(KERN_WARNING "%s: invalid 'panel' option -- disabling flat panel\n", - info->fix.id); - if (!par->panel_x) - par->enable_crt = 1; /* fall back to CRT if no panel is specified */ - - return info; -} - - -static struct fb_info *gx1fb_info; - -static int __init gx1fb_init(void) -{ - struct fb_info *info; - struct geodefb_par *par; - int ret; - -#ifndef MODULE - if (fb_get_options("gx1fb", NULL)) - return -ENODEV; -#endif - - info = gx1fb_init_fbinfo(); - if (!info) - return -ENOMEM; - gx1fb_info = info; - - par = info->par; - - /* GX1 display controller and CS5530 video device */ - par->dc_ops = &gx1_dc_ops; - par->vid_ops = &cs5530_vid_ops; - - if ((ret = gx1fb_map_video_memory(info)) < 0) { - printk(KERN_ERR "%s: gx1fb_map_video_memory() failed\n", info->fix.id); - goto err; - } - - ret = fb_find_mode(&info->var, info, mode_option, NULL, 0, NULL, 16); - if (ret == 0 || ret == 4) { - printk(KERN_ERR "%s: could not find valid video mode\n", info->fix.id); - ret = -EINVAL; - goto err; - } - - /* Clear the frame buffer of garbage. */ - memset_io(info->screen_base, 0, info->fix.smem_len); - - gx1fb_check_var(&info->var, info); - gx1fb_set_par(info); - - if (register_framebuffer(info) < 0) { - ret = -EINVAL; - goto err; - } - printk(KERN_INFO "fb%d: %s frame buffer device\n", info->node, info->fix.id); - return 0; - - err: - if (info->screen_base) - iounmap(info->screen_base); - if (par->vid_regs) - iounmap(par->vid_regs); - if (par->dc_regs) - iounmap(par->dc_regs); - if (par->vid_dev) - pci_dev_put(par->vid_dev); - if (info) - framebuffer_release(info); - return ret; -} - -static void __exit gx1fb_cleanup(void) -{ - struct fb_info *info = gx1fb_info; - struct geodefb_par *par = gx1fb_info->par; - - unregister_framebuffer(info); - - iounmap((void __iomem *)info->screen_base); - iounmap(par->vid_regs); - iounmap(par->dc_regs); - - pci_dev_put(par->vid_dev); - - framebuffer_release(info); -} - -module_init(gx1fb_init); -module_exit(gx1fb_cleanup); - -module_param_string(mode, mode_option, sizeof(mode_option), 0444); -MODULE_PARM_DESC(mode, "video mode (<x>x<y>[-<bpp>][@<refr>])"); - -module_param_named(crt, crt_option, int, 0444); -MODULE_PARM_DESC(crt, "enable CRT output. 0 = off, 1 = on (default)"); - -module_param_string(panel, panel_option, sizeof(panel_option), 0444); -MODULE_PARM_DESC(panel, "size of attached flat panel (<x>x<y>)"); - -MODULE_DESCRIPTION("framebuffer driver for the AMD Geode GX1"); -MODULE_LICENSE("GPL"); |