diff options
Diffstat (limited to 'drivers/video/geode/lxfb_core.c')
| -rw-r--r-- | drivers/video/geode/lxfb_core.c | 621 |
1 files changed, 621 insertions, 0 deletions
diff --git a/drivers/video/geode/lxfb_core.c b/drivers/video/geode/lxfb_core.c new file mode 100644 index 000000000000..5e30b40c8c0f --- /dev/null +++ b/drivers/video/geode/lxfb_core.c @@ -0,0 +1,621 @@ +/* + * Geode LX framebuffer driver. + * + * Copyright (C) 2007 Advanced Micro Devices, Inc. + * Built from gxfb (which is Copyright (C) 2006 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/console.h> +#include <linux/mm.h> +#include <linux/slab.h> +#include <linux/delay.h> +#include <linux/fb.h> +#include <linux/init.h> +#include <linux/pci.h> +#include <linux/uaccess.h> + +#include "lxfb.h" + +static char *mode_option; +static int noclear, nopanel, nocrt; +static int fbsize; + +/* Most of these modes are sorted in ascending order, but + * since the first entry in this table is the "default" mode, + * we try to make it something sane - 640x480-60 is sane + */ + +const struct fb_videomode geode_modedb[] __initdata = { + /* 640x480-60 */ + { NULL, 60, 640, 480, 39682, 48, 8, 25, 2, 88, 2, + FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, + FB_VMODE_NONINTERLACED, 0 }, + /* 640x400-70 */ + { NULL, 70, 640, 400, 39770, 40, 8, 28, 5, 96, 2, + FB_SYNC_HOR_HIGH_ACT, + FB_VMODE_NONINTERLACED, 0 }, + /* 640x480-70 */ + { NULL, 70, 640, 480, 35014, 88, 24, 15, 2, 64, 3, + 0, FB_VMODE_NONINTERLACED, 0 }, + /* 640x480-72 */ + { NULL, 72, 640, 480, 32102, 120, 16, 20, 1, 40, 3, + FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, + FB_VMODE_NONINTERLACED, 0 }, + /* 640x480-75 */ + { NULL, 75, 640, 480, 31746, 120, 16, 16, 1, 64, 3, + FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, + FB_VMODE_NONINTERLACED, 0 }, + /* 640x480-85 */ + { NULL, 85, 640, 480, 27780, 80, 56, 25, 1, 56, 3, + FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, + FB_VMODE_NONINTERLACED, 0 }, + /* 640x480-90 */ + { NULL, 90, 640, 480, 26392, 96, 32, 22, 1, 64, 3, + 0, FB_VMODE_NONINTERLACED, 0 }, + /* 640x480-100 */ + { NULL, 100, 640, 480, 23167, 104, 40, 25, 1, 64, 3, + 0, FB_VMODE_NONINTERLACED, 0 }, + /* 640x480-60 */ + { NULL, 60, 640, 480, 39682, 48, 16, 25, 10, 88, 2, + FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, + FB_VMODE_NONINTERLACED, 0 }, + /* 800x600-56 */ + { NULL, 56, 800, 600, 27901, 128, 24, 22, 1, 72, 2, + 0, FB_VMODE_NONINTERLACED, 0 }, + /* 800x600-60 */ + { NULL, 60, 800, 600, 25131, 72, 32, 23, 1, 136, 4, + 0, FB_VMODE_NONINTERLACED, 0 }, + /* 800x600-70 */ + { NULL, 70, 800, 600, 21873, 120, 40, 21, 4, 80, 3, + 0, FB_VMODE_NONINTERLACED, 0 }, + /* 800x600-72 */ + { NULL, 72, 800, 600, 20052, 64, 56, 23, 37, 120, 6, + 0, FB_VMODE_NONINTERLACED, 0 }, + /* 800x600-75 */ + { NULL, 75, 800, 600, 20202, 160, 16, 21, 1, 80, 3, + 0, FB_VMODE_NONINTERLACED, 0 }, + /* 800x600-85 */ + { NULL, 85, 800, 600, 17790, 152, 32, 27, 1, 64, 3, + 0, FB_VMODE_NONINTERLACED, 0 }, + /* 800x600-90 */ + { NULL, 90, 800, 600, 16648, 128, 40, 28, 1, 88, 3, + 0, FB_VMODE_NONINTERLACED, 0 }, + /* 800x600-100 */ + { NULL, 100, 800, 600, 14667, 136, 48, 27, 1, 88, 3, + 0, FB_VMODE_NONINTERLACED, 0 }, + /* 800x600-60 */ + { NULL, 60, 800, 600, 25131, 88, 40, 23, 1, 128, 4, + FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, + FB_VMODE_NONINTERLACED, 0 }, + /* 1024x768-60 */ + { NULL, 60, 1024, 768, 15385, 160, 24, 29, 3, 136, 6, + FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, + FB_VMODE_NONINTERLACED, 0 }, + /* 1024x768-70 */ + { NULL, 70, 1024, 768, 13346, 144, 24, 29, 3, 136, 6, + FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, + FB_VMODE_NONINTERLACED, 0 }, + /* 1024x768-72 */ + { NULL, 72, 1024, 768, 12702, 168, 56, 29, 4, 112, 3, + 0, FB_VMODE_NONINTERLACED, 0 }, + /* 1024x768-75 */ + { NULL, 75, 1024, 768, 12703, 176, 16, 28, 1, 96, 3, + 0, FB_VMODE_NONINTERLACED, 0 }, + /* 1024x768-85 */ + { NULL, 85, 1024, 768, 10581, 208, 48, 36, 1, 96, 3, + 0, FB_VMODE_NONINTERLACED, 0 }, + /* 1024x768-90 */ + { NULL, 90, 1024, 768, 9981, 176, 64, 37, 1, 112, 3, + 0, FB_VMODE_NONINTERLACED, 0 }, + /* 1024x768-100 */ + { NULL, 100, 1024, 768, 8825, 184, 72, 42, 1, 112, 3, + 0, FB_VMODE_NONINTERLACED, 0 }, + /* 1024x768-60 */ + { NULL, 60, 1024, 768, 15385, 160, 24, 29, 3, 136, 6, + FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, + FB_VMODE_NONINTERLACED, 0 }, + /* 1152x864-60 */ + { NULL, 60, 1152, 864, 12251, 184, 64, 27, 1, 120, 3, + 0, FB_VMODE_NONINTERLACED, 0 }, + /* 1152x864-70 */ + { NULL, 70, 1152, 864, 10254, 192, 72, 32, 8, 120, 3, + 0, FB_VMODE_NONINTERLACED, 0 }, + /* 1152x864-72 */ + { NULL, 72, 1152, 864, 9866, 200, 72, 33, 7, 128, 3, + 0, FB_VMODE_NONINTERLACED, 0 }, + /* 1152x864-75 */ + { NULL, 75, 1152, 864, 9259, 256, 64, 32, 1, 128, 3, + 0, FB_VMODE_NONINTERLACED, 0 }, + /* 1152x864-85 */ + { NULL, 85, 1152, 864, 8357, 200, 72, 37, 3, 128, 3, + 0, FB_VMODE_NONINTERLACED, 0 }, + /* 1152x864-90 */ + { NULL, 90, 1152, 864, 7719, 208, 80, 42, 9, 128, 3, + 0, FB_VMODE_NONINTERLACED, 0 }, + /* 1152x864-100 */ + { NULL, 100, 1152, 864, 6947, 208, 80, 48, 3, 128, 3, + 0, FB_VMODE_NONINTERLACED, 0 }, + /* 1152x864-60 */ + { NULL, 60, 1152, 864, 12251, 184, 64, 27, 1, 120, 3, + FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, + FB_VMODE_NONINTERLACED, 0 }, + /* 1280x1024-60 */ + { NULL, 60, 1280, 1024, 9262, 248, 48, 38, 1, 112, 3, + 0, FB_VMODE_NONINTERLACED, 0 }, + /* 1280x1024-70 */ + { NULL, 70, 1280, 1024, 7719, 224, 88, 38, 6, 136, 3, + 0, FB_VMODE_NONINTERLACED, 0 }, + /* 1280x1024-72 */ + { NULL, 72, 1280, 1024, 7490, 224, 88, 39, 7, 136, 3, + 0, FB_VMODE_NONINTERLACED, 0 }, + /* 1280x1024-75 */ + { NULL, 75, 1280, 1024, 7409, 248, 16, 38, 1, 144, 3, + 0, FB_VMODE_NONINTERLACED, 0 }, + /* 1280x1024-85 */ + { NULL, 85, 1280, 1024, 6351, 224, 64, 44, 1, 160, 3, + 0, FB_VMODE_NONINTERLACED, 0 }, + /* 1280x1024-90 */ + { NULL, 90, 1280, 1024, 5791, 240, 96, 51, 12, 144, 3, + 0, FB_VMODE_NONINTERLACED, 0 }, + /* 1280x1024-100 */ + { NULL, 100, 1280, 1024, 5212, 240, 96, 57, 6, 144, 3, + 0, FB_VMODE_NONINTERLACED, 0 }, + /* 1280x1024-60 */ + { NULL, 60, 1280, 1024, 9262, 248, 48, 38, 1, 112, 3, + FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, + FB_VMODE_NONINTERLACED, 0 }, + /* 1600x1200-60 */ + { NULL, 60, 1600, 1200, 6172, 304, 64, 46, 1, 192, 3, + 0, FB_VMODE_NONINTERLACED, 0 }, + /* 1600x1200-70 */ + { NULL, 70, 1600, 1200, 5291, 304, 64, 46, 1, 192, 3, + 0, FB_VMODE_NONINTERLACED, 0 }, + /* 1600x1200-72 */ + { NULL, 72, 1600, 1200, 5053, 288, 112, 47, 13, 176, 3, + 0, FB_VMODE_NONINTERLACED, 0 }, + /* 1600x1200-75 */ + { NULL, 75, 1600, 1200, 4938, 304, 64, 46, 1, 192, 3, + 0, FB_VMODE_NONINTERLACED, 0 }, + /* 1600x1200-85 */ + { NULL, 85, 1600, 1200, 4357, 304, 64, 46, 1, 192, 3, + 0, FB_VMODE_NONINTERLACED, 0 }, + /* 1600x1200-90 */ + { NULL, 90, 1600, 1200, 3981, 304, 128, 60, 1, 176, 3, + 0, FB_VMODE_NONINTERLACED, 0 }, + /* 1600x1200-100 */ + { NULL, 100, 1600, 1200, 3563, 304, 128, 67, 1, 176, 3, + 0, FB_VMODE_NONINTERLACED, 0 }, + /* 1600x1200-60 */ + { NULL, 60, 1600, 1200, 6172, 304, 64, 46, 1, 192, 3, + FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, + FB_VMODE_NONINTERLACED, 0 }, + /* 1920x1440-60 */ + { NULL, 60, 1920, 1440, 4273, 344, 128, 56, 1, 208, 3, + 0, FB_VMODE_NONINTERLACED, 0 }, + /* 1920x1440-70 */ + { NULL, 70, 1920, 1440, 3593, 360, 152, 55, 8, 208, 3, + 0, FB_VMODE_NONINTERLACED, 0 }, + /* 1920x1440-72 */ + { NULL, 72, 1920, 1440, 3472, 360, 152, 68, 4, 208, 3, + 0, FB_VMODE_NONINTERLACED, 0 }, + /* 1920x1440-75 */ + { NULL, 75, 1920, 1440, 3367, 352, 144, 56, 1, 224, 3, + 0, FB_VMODE_NONINTERLACED, 0 }, + /* 1920x1440-85 */ + { NULL, 85, 1920, 1440, 2929, 368, 152, 68, 1, 216, 3, + 0, FB_VMODE_NONINTERLACED, 0 }, +}; + +static int lxfb_check_var(struct fb_var_screeninfo *var, struct fb_info *info) +{ + if (var->xres > 1920 || var->yres > 1440) + return -EINVAL; + + if (var->bits_per_pixel == 32) { + var->red.offset = 16; var->red.length = 8; + var->green.offset = 8; var->green.length = 8; + var->blue.offset = 0; var->blue.length = 8; + } else 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; + } 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; + } else + return -EINVAL; + + var->transp.offset = 0; var->transp.length = 0; + + /* Enough video memory? */ + if ((lx_get_pitch(var->xres, var->bits_per_pixel) * var->yres) + > info->fix.smem_len) + return -EINVAL; + + return 0; +} + +static int lxfb_set_par(struct fb_info *info) +{ + if (info->var.bits_per_pixel > 8) { + 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 = lx_get_pitch(info->var.xres, + info->var.bits_per_pixel); + + lx_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 lxfb_setcolreg(unsigned regno, unsigned red, unsigned green, + unsigned blue, unsigned transp, + struct fb_info *info) +{ + 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; + + lx_set_palette_reg(info, regno, red, green, blue); + } + + return 0; +} + +static int lxfb_blank(int blank_mode, struct fb_info *info) +{ + return lx_blank_display(info, blank_mode); +} + + +static int __init lxfb_map_video_memory(struct fb_info *info, + struct pci_dev *dev) +{ + struct lxfb_par *par = info->par; + int ret; + + ret = pci_enable_device(dev); + + if (ret) + return ret; + + ret = pci_request_region(dev, 0, "lxfb-framebuffer"); + + if (ret) + return ret; + + ret = pci_request_region(dev, 1, "lxfb-gp"); + + if (ret) + return ret; + + ret = pci_request_region(dev, 2, "lxfb-vg"); + + if (ret) + return ret; + + ret = pci_request_region(dev, 3, "lxfb-vip"); + + if (ret) + return ret; + + info->fix.smem_start = pci_resource_start(dev, 0); + info->fix.smem_len = fbsize ? fbsize : lx_framebuffer_size(); + + info->screen_base = ioremap(info->fix.smem_start, info->fix.smem_len); + + ret = -ENOMEM; + + if (info->screen_base == NULL) + return ret; + + par->gp_regs = ioremap(pci_resource_start(dev, 1), + pci_resource_len(dev, 1)); + + if (par->gp_regs == NULL) + return ret; + + par->dc_regs = ioremap(pci_resource_start(dev, 2), + pci_resource_len(dev, 2)); + + if (par->dc_regs == NULL) + return ret; + + par->df_regs = ioremap(pci_resource_start(dev, 3), + pci_resource_len(dev, 3)); + + if (par->df_regs == NULL) + return ret; + + writel(DC_UNLOCK_CODE, par->dc_regs + DC_UNLOCK); + + writel(info->fix.smem_start & 0xFF000000, + par->dc_regs + DC_PHY_MEM_OFFSET); + + writel(0, par->dc_regs + DC_UNLOCK); + + dev_info(&dev->dev, "%d KB of video memory at 0x%lx\n", + info->fix.smem_len / 1024, info->fix.smem_start); + + return 0; +} + +static struct fb_ops lxfb_ops = { + .owner = THIS_MODULE, + .fb_check_var = lxfb_check_var, + .fb_set_par = lxfb_set_par, + .fb_setcolreg = lxfb_setcolreg, + .fb_blank = lxfb_blank, + /* No HW acceleration for now. */ + .fb_fillrect = cfb_fillrect, + .fb_copyarea = cfb_copyarea, + .fb_imageblit = cfb_imageblit, +}; + +static struct fb_info * __init lxfb_init_fbinfo(struct device *dev) +{ + struct lxfb_par *par; + struct fb_info *info; + + /* Alloc enough space for the pseudo palette. */ + info = framebuffer_alloc(sizeof(struct lxfb_par) + sizeof(u32) * 16, + dev); + if (!info) + return NULL; + + par = info->par; + + strcpy(info->fix.id, "Geode LX"); + + 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 = &lxfb_ops; + info->flags = FBINFO_DEFAULT; + info->node = -1; + + info->pseudo_palette = (void *)par + sizeof(struct lxfb_par); + + info->var.grayscale = 0; + + return info; +} + +static int __init lxfb_probe(struct pci_dev *pdev, + const struct pci_device_id *id) +{ + struct lxfb_par *par; + struct fb_info *info; + int ret; + + struct fb_videomode *modedb_ptr; + int modedb_size; + + info = lxfb_init_fbinfo(&pdev->dev); + + if (info == NULL) + return -ENOMEM; + + par = info->par; + + ret = lxfb_map_video_memory(info, pdev); + + if (ret < 0) { + dev_err(&pdev->dev, + "failed to map frame buffer or controller registers\n"); + goto err; + } + + /* Set up the desired outputs */ + + par->output = 0; + par->output |= (nopanel) ? 0 : OUTPUT_PANEL; + par->output |= (nocrt) ? 0 : OUTPUT_CRT; + + /* Set up the mode database */ + + modedb_ptr = (struct fb_videomode *) geode_modedb; + modedb_size = ARRAY_SIZE(geode_modedb); + + ret = fb_find_mode(&info->var, info, mode_option, + modedb_ptr, modedb_size, NULL, 16); + + if (ret == 0 || ret == 4) { + dev_err(&pdev->dev, "could not find valid video mode\n"); + ret = -EINVAL; + goto err; + } + + /* Clear the screen of garbage, unless noclear was specified, + * in which case we assume the user knows what he is doing */ + + if (!noclear) + memset_io(info->screen_base, 0, info->fix.smem_len); + + /* Set the mode */ + + lxfb_check_var(&info->var, info); + lxfb_set_par(info); + + if (register_framebuffer(info) < 0) { + ret = -EINVAL; + goto err; + } + pci_set_drvdata(pdev, info); + 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); + pci_release_region(pdev, 0); + } + if (par->gp_regs) { + iounmap(par->gp_regs); + pci_release_region(pdev, 1); + } + if (par->dc_regs) { + iounmap(par->dc_regs); + pci_release_region(pdev, 2); + } + if (par->df_regs) { + iounmap(par->df_regs); + pci_release_region(pdev, 3); + } + + if (info) + framebuffer_release(info); + + return ret; +} + +static void lxfb_remove(struct pci_dev *pdev) +{ + struct fb_info *info = pci_get_drvdata(pdev); + struct lxfb_par *par = info->par; + + unregister_framebuffer(info); + + iounmap(info->screen_base); + pci_release_region(pdev, 0); + + iounmap(par->gp_regs); + pci_release_region(pdev, 1); + + iounmap(par->dc_regs); + pci_release_region(pdev, 2); + + iounmap(par->df_regs); + pci_release_region(pdev, 3); + + pci_set_drvdata(pdev, NULL); + framebuffer_release(info); +} + +static struct pci_device_id lxfb_id_table[] = { + { PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_LX_VIDEO) }, + { 0, } +}; + +MODULE_DEVICE_TABLE(pci, lxfb_id_table); + +static struct pci_driver lxfb_driver = { + .name = "lxfb", + .id_table = lxfb_id_table, + .probe = lxfb_probe, + .remove = lxfb_remove, +}; + +#ifndef MODULE +static int __init lxfb_setup(char *options) +{ + char *opt; + + if (!options || !*options) + return 0; + + while (1) { + char *opt = strsep(&options, ","); + + if (opt == NULL) + break; + + if (!*opt) + continue; + + if (!strncmp(opt, "fbsize:", 7)) + fbsize = simple_strtoul(opt+7, NULL, 0); + else if (!strcmp(opt, "noclear")) + noclear = 1; + else if (!strcmp(opt, "nopanel")) + nopanel = 1; + else if (!strcmp(opt, "nocrt")) + nocrt = 1; + else + mode_option = opt; + } + + return 0; +} +#endif + +static int __init lxfb_init(void) +{ +#ifndef MODULE + char *option = NULL; + + if (fb_get_options("lxfb", &option)) + return -ENODEV; + + lxfb_setup(option); +#endif + return pci_register_driver(&lxfb_driver); +} +static void __exit lxfb_cleanup(void) +{ + pci_unregister_driver(&lxfb_driver); +} + +module_init(lxfb_init); +module_exit(lxfb_cleanup); + +module_param(mode_option, charp, 0); +MODULE_PARM_DESC(mode_option, "video mode (<x>x<y>[-<bpp>][@<refr>])"); + +module_param(fbsize, int, 0); +MODULE_PARM_DESC(fbsize, "video memory size"); + +MODULE_DESCRIPTION("Framebuffer driver for the AMD Geode LX"); +MODULE_LICENSE("GPL"); |
