clgenfb.c
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上传日期:2013-04-10
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文件大小:96k
- /*
- * drivers/video/clgenfb.c - driver for Cirrus Logic chipsets
- *
- * Copyright 1999-2001 Jeff Garzik <jgarzik@mandrakesoft.com>
- *
- * Contributors (thanks, all!)
- *
- * Jeff Rugen:
- * Major contributions; Motorola PowerStack (PPC and PCI) support,
- * GD54xx, 1280x1024 mode support, change MCLK based on VCLK.
- *
- * Geert Uytterhoeven:
- * Excellent code review.
- *
- * Lars Hecking:
- * Amiga updates and testing.
- *
- * Original clgenfb author: Frank Neumann
- *
- * Based on retz3fb.c and clgen.c:
- * Copyright (C) 1997 Jes Sorensen
- * Copyright (C) 1996 Frank Neumann
- *
- ***************************************************************
- *
- * Format this code with GNU indent '-kr -i8 -pcs' options.
- *
- * 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.
- *
- */
- #define CLGEN_VERSION "1.9.9.1"
- #include <linux/config.h>
- #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/selection.h>
- #include <asm/pgtable.h>
- #ifdef CONFIG_ZORRO
- #include <linux/zorro.h>
- #endif
- #ifdef CONFIG_PCI
- #include <linux/pci.h>
- #endif
- #ifdef CONFIG_AMIGA
- #include <asm/amigahw.h>
- #endif
- #ifdef CONFIG_ALL_PPC
- #include <asm/processor.h>
- #define isPReP (_machine == _MACH_prep)
- #else
- #define isPReP 0
- #endif
- #include <video/fbcon.h>
- #include <video/fbcon-mfb.h>
- #include <video/fbcon-cfb8.h>
- #include <video/fbcon-cfb16.h>
- #include <video/fbcon-cfb24.h>
- #include <video/fbcon-cfb32.h>
- #include "clgenfb.h"
- #include "vga.h"
- /*****************************************************************
- *
- * debugging and utility macros
- *
- */
- /* enable debug output? */
- /* #define CLGEN_DEBUG 1 */
- /* disable runtime assertions? */
- /* #define CLGEN_NDEBUG */
- /* debug output */
- #ifdef CLGEN_DEBUG
- #define DPRINTK(fmt, args...) printk(KERN_DEBUG "%s: " fmt, __FUNCTION__ , ## args)
- #else
- #define DPRINTK(fmt, args...)
- #endif
- /* debugging assertions */
- #ifndef CLGEN_NDEBUG
- #define assert(expr)
- if(!(expr)) {
- printk( "Assertion failed! %s,%s,%s,line=%dn",
- #expr,__FILE__,__FUNCTION__,__LINE__);
- }
- #else
- #define assert(expr)
- #endif
- #ifdef TRUE
- #undef TRUE
- #endif
- #ifdef FALSE
- #undef FALSE
- #endif
- #define TRUE 1
- #define FALSE 0
- #define MB_ (1024*1024)
- #define KB_ (1024)
- #define MAX_NUM_BOARDS 7
- /*****************************************************************
- *
- * chipset information
- *
- */
- /* board types */
- typedef enum {
- BT_NONE = 0,
- BT_SD64,
- BT_PICCOLO,
- BT_PICASSO,
- BT_SPECTRUM,
- BT_PICASSO4, /* GD5446 */
- BT_ALPINE, /* GD543x/4x */
- BT_GD5480,
- BT_LAGUNA, /* GD546x */
- } clgen_board_t;
- /*
- * per-board-type information, used for enumerating and abstracting
- * chip-specific information
- * NOTE: MUST be in the same order as clgen_board_t in order to
- * use direct indexing on this array
- * NOTE: '__initdata' cannot be used as some of this info
- * is required at runtime. Maybe separate into an init-only and
- * a run-time table?
- */
- static const struct clgen_board_info_rec {
- clgen_board_t btype; /* chipset enum, not strictly necessary, as
- * clgen_board_info[] is directly indexed
- * by this value */
- char *name; /* ASCII name of chipset */
- long maxclock; /* maximum video clock */
- unsigned init_sr07 : 1; /* init SR07 during init_vgachip() */
- unsigned init_sr1f : 1; /* write SR1F during init_vgachip() */
- unsigned scrn_start_bit19 : 1; /* construct bit 19 of screen start address */
- /* initial SR07 value, then for each mode */
- unsigned char sr07;
- unsigned char sr07_1bpp;
- unsigned char sr07_1bpp_mux;
- unsigned char sr07_8bpp;
- unsigned char sr07_8bpp_mux;
- unsigned char sr1f; /* SR1F VGA initial register value */
- } clgen_board_info[] = {
- { BT_NONE, }, /* dummy record */
- { BT_SD64,
- "CL SD64",
- 140000, /* the SD64/P4 have a higher max. videoclock */
- TRUE,
- TRUE,
- TRUE,
- 0xF0,
- 0xF0,
- 0, /* unused, does not multiplex */
- 0xF1,
- 0, /* unused, does not multiplex */
- 0x20 },
- { BT_PICCOLO,
- "CL Piccolo",
- 90000,
- TRUE,
- TRUE,
- FALSE,
- 0x80,
- 0x80,
- 0, /* unused, does not multiplex */
- 0x81,
- 0, /* unused, does not multiplex */
- 0x22 },
- { BT_PICASSO,
- "CL Picasso",
- 90000,
- TRUE,
- TRUE,
- FALSE,
- 0x20,
- 0x20,
- 0, /* unused, does not multiplex */
- 0x21,
- 0, /* unused, does not multiplex */
- 0x22 },
- { BT_SPECTRUM,
- "CL Spectrum",
- 90000,
- TRUE,
- TRUE,
- FALSE,
- 0x80,
- 0x80,
- 0, /* unused, does not multiplex */
- 0x81,
- 0, /* unused, does not multiplex */
- 0x22 },
- { BT_PICASSO4,
- "CL Picasso4",
- 140000, /* the SD64/P4 have a higher max. videoclock */
- TRUE,
- FALSE,
- TRUE,
- 0x20,
- 0x20,
- 0, /* unused, does not multiplex */
- 0x21,
- 0, /* unused, does not multiplex */
- 0 },
- { BT_ALPINE,
- "CL Alpine",
- 110000, /* 135100 for some, 85500 for others */
- TRUE,
- TRUE,
- TRUE,
- 0xA0,
- 0xA1,
- 0xA7,
- 0xA1,
- 0xA7,
- 0x1C },
- { BT_GD5480,
- "CL GD5480",
- 90000,
- TRUE,
- TRUE,
- TRUE,
- 0x10,
- 0x11,
- 0, /* unused, does not multiplex */
- 0x11,
- 0, /* unused, does not multiplex */
- 0x1C },
- { BT_LAGUNA,
- "CL Laguna",
- 135100,
- FALSE,
- FALSE,
- TRUE,
- 0, /* unused */
- 0, /* unused */
- 0, /* unused */
- 0, /* unused */
- 0, /* unused */
- 0 }, /* unused */
- };
- #ifdef CONFIG_PCI
- /* the list of PCI devices for which we probe, and the
- * order in which we do it */
- static const struct {
- clgen_board_t btype;
- const char *nameOverride; /* XXX unused... for now */
- unsigned short device;
- } clgen_pci_probe_list[] __initdata = {
- { BT_ALPINE, NULL, PCI_DEVICE_ID_CIRRUS_5436 },
- { BT_ALPINE, NULL, PCI_DEVICE_ID_CIRRUS_5434_8 },
- { BT_ALPINE, NULL, PCI_DEVICE_ID_CIRRUS_5434_4 },
- { BT_ALPINE, NULL, PCI_DEVICE_ID_CIRRUS_5430 }, /* GD-5440 has identical id */
- { BT_ALPINE, NULL, PCI_DEVICE_ID_CIRRUS_7543 },
- { BT_ALPINE, NULL, PCI_DEVICE_ID_CIRRUS_7548 },
- { BT_GD5480, NULL, PCI_DEVICE_ID_CIRRUS_5480 }, /* MacPicasso probably */
- { BT_PICASSO4, NULL, PCI_DEVICE_ID_CIRRUS_5446 }, /* Picasso 4 is a GD5446 */
- { BT_LAGUNA, "CL Laguna", PCI_DEVICE_ID_CIRRUS_5462 },
- { BT_LAGUNA, "CL Laguna 3D", PCI_DEVICE_ID_CIRRUS_5464 },
- { BT_LAGUNA, "CL Laguna 3DA", PCI_DEVICE_ID_CIRRUS_5465 },
- };
- #endif /* CONFIG_PCI */
- #ifdef CONFIG_ZORRO
- static const struct {
- clgen_board_t btype;
- zorro_id id, id2;
- unsigned long size;
- } clgen_zorro_probe_list[] __initdata = {
- { BT_SD64,
- ZORRO_PROD_HELFRICH_SD64_RAM,
- ZORRO_PROD_HELFRICH_SD64_REG,
- 0x400000 },
- { BT_PICCOLO,
- ZORRO_PROD_HELFRICH_PICCOLO_RAM,
- ZORRO_PROD_HELFRICH_PICCOLO_REG,
- 0x200000 },
- { BT_PICASSO,
- ZORRO_PROD_VILLAGE_TRONIC_PICASSO_II_II_PLUS_RAM,
- ZORRO_PROD_VILLAGE_TRONIC_PICASSO_II_II_PLUS_REG,
- 0x200000 },
- { BT_SPECTRUM,
- ZORRO_PROD_GVP_EGS_28_24_SPECTRUM_RAM,
- ZORRO_PROD_GVP_EGS_28_24_SPECTRUM_REG,
- 0x200000 },
- { BT_PICASSO4,
- ZORRO_PROD_VILLAGE_TRONIC_PICASSO_IV_Z3,
- 0,
- 0x400000 },
- };
- #endif /* CONFIG_ZORRO */
- struct clgenfb_par {
- struct fb_var_screeninfo var;
- __u32 line_length; /* in BYTES! */
- __u32 visual;
- __u32 type;
- long freq;
- long nom;
- long den;
- long div;
- long multiplexing;
- long mclk;
- long divMCLK;
- long HorizRes; /* The x resolution in pixel */
- long HorizTotal;
- long HorizDispEnd;
- long HorizBlankStart;
- long HorizBlankEnd;
- long HorizSyncStart;
- long HorizSyncEnd;
- long VertRes; /* the physical y resolution in scanlines */
- long VertTotal;
- long VertDispEnd;
- long VertSyncStart;
- long VertSyncEnd;
- long VertBlankStart;
- long VertBlankEnd;
- };
- #ifdef CLGEN_DEBUG
- typedef enum {
- CRT,
- SEQ
- } clgen_dbg_reg_class_t;
- #endif /* CLGEN_DEBUG */
- /* info about board */
- struct clgenfb_info {
- struct fb_info_gen gen;
- caddr_t fbmem;
- caddr_t regs;
- caddr_t mem;
- unsigned long size;
- clgen_board_t btype;
- int smallboard;
- unsigned char SFR; /* Shadow of special function register */
- unsigned long fbmem_phys;
- unsigned long fbregs_phys;
- struct clgenfb_par currentmode;
- struct { u8 red, green, blue, pad; } palette[256];
- union {
- #ifdef FBCON_HAS_CFB16
- u16 cfb16[16];
- #endif
- #ifdef FBCON_HAS_CFB24
- u32 cfb24[16];
- #endif
- #ifdef FBCON_HAS_CFB32
- u32 cfb32[16];
- #endif
- } fbcon_cmap;
- #ifdef CONFIG_ZORRO
- unsigned long board_addr,
- board_size;
- #endif
- #ifdef CONFIG_PCI
- struct pci_dev *pdev;
- #endif
- };
- static struct display disp;
- static struct clgenfb_info boards[MAX_NUM_BOARDS]; /* the boards */
- static unsigned clgen_def_mode = 1;
- static int noaccel = 0;
- /*
- * Predefined Video Modes
- */
- static const struct {
- const char *name;
- struct fb_var_screeninfo var;
- } clgenfb_predefined[] __initdata =
- {
- {"Autodetect", /* autodetect mode */
- {0}
- },
- {"640x480", /* 640x480, 31.25 kHz, 60 Hz, 25 MHz PixClock */
- {
- 640, 480, 640, 480, 0, 0, 8, 0,
- {0, 8, 0},
- {0, 8, 0},
- {0, 8, 0},
- {0, 0, 0},
- 0, 0, -1, -1, FB_ACCEL_NONE, 40000, 48, 16, 32, 8, 96, 4,
- FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, FB_VMODE_NONINTERLACED
- }
- },
- {"800x600", /* 800x600, 48 kHz, 76 Hz, 50 MHz PixClock */
- {
- 800, 600, 800, 600, 0, 0, 8, 0,
- {0, 8, 0},
- {0, 8, 0},
- {0, 8, 0},
- {0, 0, 0},
- 0, 0, -1, -1, FB_ACCEL_NONE, 20000, 128, 16, 24, 2, 96, 6,
- 0, FB_VMODE_NONINTERLACED
- }
- },
- /*
- Modeline from XF86Config:
- Mode "1024x768" 80 1024 1136 1340 1432 768 770 774 805
- */
- {"1024x768", /* 1024x768, 55.8 kHz, 70 Hz, 80 MHz PixClock */
- {
- 1024, 768, 1024, 768, 0, 0, 8, 0,
- {0, 8, 0},
- {0, 8, 0},
- {0, 8, 0},
- {0, 0, 0},
- 0, 0, -1, -1, FB_ACCEL_NONE, 12500, 144, 32, 30, 2, 192, 6,
- 0, FB_VMODE_NONINTERLACED
- }
- }
- };
- #define NUM_TOTAL_MODES ARRAY_SIZE(clgenfb_predefined)
- static struct fb_var_screeninfo clgenfb_default;
- /*
- * Frame Buffer Name
- */
- static const char *clgenfb_name = "CLgen";
- /****************************************************************************/
- /**** BEGIN PROTOTYPES ******************************************************/
- /*--- Interface used by the world ------------------------------------------*/
- int clgenfb_init (void);
- int clgenfb_setup (char *options);
- static int clgenfb_open (struct fb_info *info, int user);
- static int clgenfb_release (struct fb_info *info, int user);
- /* function table of the above functions */
- static struct fb_ops clgenfb_ops = {
- owner: THIS_MODULE,
- fb_open: clgenfb_open,
- fb_release: clgenfb_release,
- fb_get_fix: fbgen_get_fix,
- fb_get_var: fbgen_get_var,
- fb_set_var: fbgen_set_var,
- fb_get_cmap: fbgen_get_cmap,
- fb_set_cmap: fbgen_set_cmap,
- fb_pan_display: fbgen_pan_display,
- };
- /*--- Hardware Specific Routines -------------------------------------------*/
- static void clgen_detect (void);
- static int clgen_encode_fix (struct fb_fix_screeninfo *fix, const void *par,
- struct fb_info_gen *info);
- static int clgen_decode_var (const struct fb_var_screeninfo *var, void *par,
- struct fb_info_gen *info);
- static int clgen_encode_var (struct fb_var_screeninfo *var, const void *par,
- struct fb_info_gen *info);
- static void clgen_get_par (void *par, struct fb_info_gen *info);
- static void clgen_set_par (const void *par, struct fb_info_gen *info);
- static int clgen_getcolreg (unsigned regno, unsigned *red, unsigned *green,
- unsigned *blue, unsigned *transp,
- struct fb_info *info);
- static int clgen_setcolreg (unsigned regno, unsigned red, unsigned green,
- unsigned blue, unsigned transp,
- struct fb_info *info);
- static int clgen_pan_display (const struct fb_var_screeninfo *var,
- struct fb_info_gen *info);
- static int clgen_blank (int blank_mode, struct fb_info_gen *info);
- static void clgen_set_disp (const void *par, struct display *disp,
- struct fb_info_gen *info);
- /* function table of the above functions */
- static struct fbgen_hwswitch clgen_hwswitch =
- {
- clgen_detect,
- clgen_encode_fix,
- clgen_decode_var,
- clgen_encode_var,
- clgen_get_par,
- clgen_set_par,
- clgen_getcolreg,
- clgen_setcolreg,
- clgen_pan_display,
- clgen_blank,
- clgen_set_disp
- };
- /* Text console acceleration */
- #ifdef FBCON_HAS_CFB8
- static void fbcon_clgen8_bmove (struct display *p, int sy, int sx,
- int dy, int dx, int height, int width);
- static void fbcon_clgen8_clear (struct vc_data *conp, struct display *p,
- int sy, int sx, int height, int width);
- static struct display_switch fbcon_clgen_8 = {
- setup: fbcon_cfb8_setup,
- bmove: fbcon_clgen8_bmove,
- clear: fbcon_clgen8_clear,
- putc: fbcon_cfb8_putc,
- putcs: fbcon_cfb8_putcs,
- revc: fbcon_cfb8_revc,
- clear_margins: fbcon_cfb8_clear_margins,
- fontwidthmask: FONTWIDTH (4) | FONTWIDTH (8) | FONTWIDTH (12) | FONTWIDTH (16)
- };
- #endif
- #ifdef FBCON_HAS_CFB16
- static void fbcon_clgen16_bmove (struct display *p, int sy, int sx,
- int dy, int dx, int height, int width);
- static void fbcon_clgen16_clear (struct vc_data *conp, struct display *p,
- int sy, int sx, int height, int width);
- static struct display_switch fbcon_clgen_16 = {
- setup: fbcon_cfb16_setup,
- bmove: fbcon_clgen16_bmove,
- clear: fbcon_clgen16_clear,
- putc: fbcon_cfb16_putc,
- putcs: fbcon_cfb16_putcs,
- revc: fbcon_cfb16_revc,
- clear_margins: fbcon_cfb16_clear_margins,
- fontwidthmask: FONTWIDTH (4) | FONTWIDTH (8) | FONTWIDTH (12) | FONTWIDTH (16)
- };
- #endif
- #ifdef FBCON_HAS_CFB32
- static void fbcon_clgen32_bmove (struct display *p, int sy, int sx,
- int dy, int dx, int height, int width);
- static void fbcon_clgen32_clear (struct vc_data *conp, struct display *p,
- int sy, int sx, int height, int width);
- static struct display_switch fbcon_clgen_32 = {
- setup: fbcon_cfb32_setup,
- bmove: fbcon_clgen32_bmove,
- clear: fbcon_clgen32_clear,
- putc: fbcon_cfb32_putc,
- putcs: fbcon_cfb32_putcs,
- revc: fbcon_cfb32_revc,
- clear_margins: fbcon_cfb32_clear_margins,
- fontwidthmask: FONTWIDTH (4) | FONTWIDTH (8) | FONTWIDTH (12) | FONTWIDTH (16)
- };
- #endif
- /*--- Internal routines ----------------------------------------------------*/
- static void init_vgachip (struct clgenfb_info *fb_info);
- static void switch_monitor (struct clgenfb_info *fb_info, int on);
- static void WGen (const struct clgenfb_info *fb_info,
- int regnum, unsigned char val);
- static unsigned char RGen (const struct clgenfb_info *fb_info, int regnum);
- static void AttrOn (const struct clgenfb_info *fb_info);
- static void WHDR (const struct clgenfb_info *fb_info, unsigned char val);
- static void WSFR (struct clgenfb_info *fb_info, unsigned char val);
- static void WSFR2 (struct clgenfb_info *fb_info, unsigned char val);
- static void WClut (struct clgenfb_info *fb_info, unsigned char regnum, unsigned char red,
- unsigned char green,
- unsigned char blue);
- #if 0
- static void RClut (struct clgenfb_info *fb_info, unsigned char regnum, unsigned char *red,
- unsigned char *green,
- unsigned char *blue);
- #endif
- static void clgen_WaitBLT (caddr_t regbase);
- static void clgen_BitBLT (caddr_t regbase, u_short curx, u_short cury,
- u_short destx, u_short desty,
- u_short width, u_short height,
- u_short line_length);
- static void clgen_RectFill (struct clgenfb_info *fb_info, u_short x, u_short y,
- u_short width, u_short height,
- u_char color, u_short line_length);
- static void bestclock (long freq, long *best,
- long *nom, long *den,
- long *div, long maxfreq);
- #ifdef CLGEN_DEBUG
- static void clgen_dump (void);
- static void clgen_dbg_reg_dump (caddr_t regbase);
- static void clgen_dbg_print_regs (caddr_t regbase, clgen_dbg_reg_class_t reg_class,...);
- static void clgen_dbg_print_byte (const char *name, unsigned char val);
- #endif /* CLGEN_DEBUG */
- /*** END PROTOTYPES ********************************************************/
- /*****************************************************************************/
- /*** BEGIN Interface Used by the World ***************************************/
- static int opencount = 0;
- /*--- Open /dev/fbx ---------------------------------------------------------*/
- static int clgenfb_open (struct fb_info *info, int user)
- {
- if (opencount++ == 0)
- switch_monitor ((struct clgenfb_info *) info, 1);
- return 0;
- }
- /*--- Close /dev/fbx --------------------------------------------------------*/
- static int clgenfb_release (struct fb_info *info, int user)
- {
- if (--opencount == 0)
- switch_monitor ((struct clgenfb_info *) info, 0);
- return 0;
- }
- /**** END Interface used by the World *************************************/
- /****************************************************************************/
- /**** BEGIN Hardware specific Routines **************************************/
- static void clgen_detect (void)
- {
- DPRINTK ("ENTERn");
- DPRINTK ("EXITn");
- }
- static int clgen_encode_fix (struct fb_fix_screeninfo *fix, const void *par,
- struct fb_info_gen *info)
- {
- struct clgenfb_par *_par = (struct clgenfb_par *) par;
- struct clgenfb_info *_info = (struct clgenfb_info *) info;
- DPRINTK ("ENTERn");
- memset (fix, 0, sizeof (struct fb_fix_screeninfo));
- strcpy (fix->id, clgenfb_name);
- if (_info->btype == BT_GD5480) {
- /* Select proper byte-swapping aperture */
- switch (_par->var.bits_per_pixel) {
- case 1:
- case 8:
- fix->smem_start = _info->fbmem_phys;
- break;
- case 16:
- fix->smem_start = _info->fbmem_phys + 1 * MB_;
- break;
- case 24:
- case 32:
- fix->smem_start = _info->fbmem_phys + 2 * MB_;
- break;
- }
- } else {
- fix->smem_start = _info->fbmem_phys;
- }
- /* monochrome: only 1 memory plane */
- /* 8 bit and above: Use whole memory area */
- fix->smem_len = _par->var.bits_per_pixel == 1 ? _info->size / 4
- : _info->size;
- fix->type = _par->type;
- fix->type_aux = 0;
- fix->visual = _par->visual;
- fix->xpanstep = 1;
- fix->ypanstep = 1;
- fix->ywrapstep = 0;
- fix->line_length = _par->line_length;
- /* FIXME: map region at 0xB8000 if available, fill in here */
- fix->mmio_start = 0;
- fix->mmio_len = 0;
- fix->accel = FB_ACCEL_NONE;
- DPRINTK ("EXITn");
- return 0;
- }
- /* Get a good MCLK value */
- static long clgen_get_mclk (long freq, int bpp, long *div)
- {
- long mclk;
- assert (div != NULL);
- /* Calculate MCLK, in case VCLK is high enough to require > 50MHz.
- * Assume a 64-bit data path for now. The formula is:
- * ((B * PCLK * 2)/W) * 1.2
- * B = bytes per pixel, PCLK = pixclock, W = data width in bytes */
- mclk = ((bpp / 8) * freq * 2) / 4;
- mclk = (mclk * 12) / 10;
- if (mclk < 50000)
- mclk = 50000;
- DPRINTK ("Use MCLK of %ld kHzn", mclk);
- /* Calculate value for SR1F. Multiply by 2 so we can round up. */
- mclk = ((mclk * 16) / 14318);
- mclk = (mclk + 1) / 2;
- DPRINTK ("Set SR1F[5:0] to 0x%lxn", mclk);
- /* Determine if we should use MCLK instead of VCLK, and if so, what we
- * should divide it by to get VCLK */
- switch (freq) {
- case 24751 ... 25249:
- *div = 2;
- DPRINTK ("Using VCLK = MCLK/2n");
- break;
- case 49501 ... 50499:
- *div = 1;
- DPRINTK ("Using VCLK = MCLKn");
- break;
- default:
- *div = 0;
- break;
- }
- return mclk;
- }
- static int clgen_decode_var (const struct fb_var_screeninfo *var, void *par,
- struct fb_info_gen *info)
- {
- long freq;
- long maxclock;
- int xres, hfront, hsync, hback;
- int yres, vfront, vsync, vback;
- int nom, den; /* translyting from pixels->bytes */
- int i;
- static struct {
- int xres, yres;
- } modes[] = { {
- 1600, 1280
- }, {
- 1280, 1024
- }, {
- 1024, 768
- },
- {
- 800, 600
- }, {
- 640, 480
- }, {
- -1, -1
- }
- };
- struct clgenfb_par *_par = (struct clgenfb_par *) par;
- struct clgenfb_info *fb_info = (struct clgenfb_info *) info;
- assert (var != NULL);
- assert (par != NULL);
- assert (info != NULL);
- DPRINTK ("ENTERn");
- DPRINTK ("Requested: %dx%dx%dn", var->xres, var->yres, var->bits_per_pixel);
- DPRINTK (" virtual: %dx%dn", var->xres_virtual, var->yres_virtual);
- DPRINTK (" offset: (%d,%d)n", var->xoffset, var->yoffset);
- DPRINTK ("grayscale: %dn", var->grayscale);
- memset (par, 0, sizeof (struct clgenfb_par));
- _par->var = *var;
- switch (var->bits_per_pixel) {
- case 1:
- nom = 4;
- den = 8;
- break; /* 8 pixel per byte, only 1/4th of mem usable */
- case 2 ... 8:
- _par->var.bits_per_pixel = 8;
- nom = 1;
- den = 1;
- break; /* 1 pixel == 1 byte */
- case 9 ... 16:
- _par->var.bits_per_pixel = 16;
- nom = 2;
- den = 1;
- break; /* 2 bytes per pixel */
- case 17 ... 24:
- _par->var.bits_per_pixel = 24;
- nom = 3;
- den = 1;
- break; /* 3 bytes per pixel */
- case 25 ... 32:
- _par->var.bits_per_pixel = 32;
- nom = 4;
- den = 1;
- break; /* 4 bytes per pixel */
- default:
- printk ("clgen: mode %dx%dx%d rejected...color depth not supported.n",
- var->xres, var->yres, var->bits_per_pixel);
- DPRINTK ("EXIT - EINVAL errorn");
- return -EINVAL;
- }
- if (_par->var.xres * nom / den * _par->var.yres > fb_info->size) {
- printk ("clgen: mode %dx%dx%d rejected...resolution too high to fit into video memory!n",
- var->xres, var->yres, var->bits_per_pixel);
- DPRINTK ("EXIT - EINVAL errorn");
- return -EINVAL;
- }
- /* use highest possible virtual resolution */
- if (_par->var.xres_virtual == -1 &&
- _par->var.yres_virtual == -1) {
- printk ("clgen: using maximum available virtual resolutionn");
- for (i = 0; modes[i].xres != -1; i++) {
- if (modes[i].xres * nom / den * modes[i].yres < fb_info->size / 2)
- break;
- }
- if (modes[i].xres == -1) {
- printk ("clgen: could not find a virtual resolution that fits into video memory!!n");
- DPRINTK ("EXIT - EINVAL errorn");
- return -EINVAL;
- }
- _par->var.xres_virtual = modes[i].xres;
- _par->var.yres_virtual = modes[i].yres;
- printk ("clgen: virtual resolution set to maximum of %dx%dn",
- _par->var.xres_virtual, _par->var.yres_virtual);
- } else if (_par->var.xres_virtual == -1) {
- /* FIXME: maximize X virtual resolution only */
- } else if (_par->var.yres_virtual == -1) {
- /* FIXME: maximize Y virtual resolution only */
- }
- if (_par->var.xoffset < 0)
- _par->var.xoffset = 0;
- if (_par->var.yoffset < 0)
- _par->var.yoffset = 0;
- /* truncate xoffset and yoffset to maximum if too high */
- if (_par->var.xoffset > _par->var.xres_virtual - _par->var.xres)
- _par->var.xoffset = _par->var.xres_virtual - _par->var.xres - 1;
- if (_par->var.yoffset > _par->var.yres_virtual - _par->var.yres)
- _par->var.yoffset = _par->var.yres_virtual - _par->var.yres - 1;
- switch (_par->var.bits_per_pixel) {
- case 1:
- _par->line_length = _par->var.xres_virtual / 8;
- _par->visual = FB_VISUAL_MONO10;
- break;
- case 8:
- _par->line_length = _par->var.xres_virtual;
- _par->visual = FB_VISUAL_PSEUDOCOLOR;
- _par->var.red.offset = 0;
- _par->var.red.length = 6;
- _par->var.green.offset = 0;
- _par->var.green.length = 6;
- _par->var.blue.offset = 0;
- _par->var.blue.length = 6;
- break;
- case 16:
- _par->line_length = _par->var.xres_virtual * 2;
- _par->visual = FB_VISUAL_DIRECTCOLOR;
- if(isPReP) {
- _par->var.red.offset = 2;
- _par->var.green.offset = -3;
- _par->var.blue.offset = 8;
- } else {
- _par->var.red.offset = 10;
- _par->var.green.offset = 5;
- _par->var.blue.offset = 0;
- }
- _par->var.red.length = 5;
- _par->var.green.length = 5;
- _par->var.blue.length = 5;
- break;
- case 24:
- _par->line_length = _par->var.xres_virtual * 3;
- _par->visual = FB_VISUAL_DIRECTCOLOR;
- if(isPReP) {
- _par->var.red.offset = 8;
- _par->var.green.offset = 16;
- _par->var.blue.offset = 24;
- } else {
- _par->var.red.offset = 16;
- _par->var.green.offset = 8;
- _par->var.blue.offset = 0;
- }
- _par->var.red.length = 8;
- _par->var.green.length = 8;
- _par->var.blue.length = 8;
- break;
- case 32:
- _par->line_length = _par->var.xres_virtual * 4;
- _par->visual = FB_VISUAL_DIRECTCOLOR;
- if(isPReP) {
- _par->var.red.offset = 8;
- _par->var.green.offset = 16;
- _par->var.blue.offset = 24;
- } else {
- _par->var.red.offset = 16;
- _par->var.green.offset = 8;
- _par->var.blue.offset = 0;
- }
- _par->var.red.length = 8;
- _par->var.green.length = 8;
- _par->var.blue.length = 8;
- break;
- default:
- DPRINTK("Unsupported bpp size: %dn", _par->var.bits_per_pixel);
- assert (FALSE);
- /* should never occur */
- break;
- }
- _par->var.red.msb_right =
- _par->var.green.msb_right =
- _par->var.blue.msb_right =
- _par->var.transp.offset =
- _par->var.transp.length =
- _par->var.transp.msb_right = 0;
- _par->type = FB_TYPE_PACKED_PIXELS;
- /* convert from ps to kHz */
- freq = 1000000000 / var->pixclock;
- DPRINTK ("desired pixclock: %ld kHzn", freq);
- maxclock = clgen_board_info[fb_info->btype].maxclock;
- _par->multiplexing = 0;
- /* If the frequency is greater than we can support, we might be able
- * to use multiplexing for the video mode */
- if (freq > maxclock) {
- switch (fb_info->btype) {
- case BT_ALPINE:
- case BT_GD5480:
- _par->multiplexing = 1;
- break;
- default:
- printk (KERN_WARNING "clgen: ERROR: Frequency greater than maxclock (%ld kHz)n", maxclock);
- DPRINTK ("EXIT - return -EINVALn");
- return -EINVAL;
- }
- }
- #if 0
- /* TODO: If we have a 1MB 5434, we need to put ourselves in a mode where
- * the VCLK is double the pixel clock. */
- switch (var->bits_per_pixel) {
- case 16:
- case 32:
- if (_par->HorizRes <= 800)
- freq /= 2; /* Xbh has this type of clock for 32-bit */
- break;
- }
- #endif
- bestclock (freq, &_par->freq, &_par->nom, &_par->den, &_par->div,
- maxclock);
- _par->mclk = clgen_get_mclk (freq, _par->var.bits_per_pixel, &_par->divMCLK);
- xres = _par->var.xres;
- hfront = _par->var.right_margin;
- hsync = _par->var.hsync_len;
- hback = _par->var.left_margin;
- yres = _par->var.yres;
- vfront = _par->var.lower_margin;
- vsync = _par->var.vsync_len;
- vback = _par->var.upper_margin;
- if (_par->var.vmode & FB_VMODE_DOUBLE) {
- yres *= 2;
- vfront *= 2;
- vsync *= 2;
- vback *= 2;
- } else if (_par->var.vmode & FB_VMODE_INTERLACED) {
- yres = (yres + 1) / 2;
- vfront = (vfront + 1) / 2;
- vsync = (vsync + 1) / 2;
- vback = (vback + 1) / 2;
- }
- _par->HorizRes = xres;
- _par->HorizTotal = (xres + hfront + hsync + hback) / 8 - 5;
- _par->HorizDispEnd = xres / 8 - 1;
- _par->HorizBlankStart = xres / 8;
- _par->HorizBlankEnd = _par->HorizTotal + 5; /* does not count with "-5" */
- _par->HorizSyncStart = (xres + hfront) / 8 + 1;
- _par->HorizSyncEnd = (xres + hfront + hsync) / 8 + 1;
- _par->VertRes = yres;
- _par->VertTotal = yres + vfront + vsync + vback - 2;
- _par->VertDispEnd = yres - 1;
- _par->VertBlankStart = yres;
- _par->VertBlankEnd = _par->VertTotal;
- _par->VertSyncStart = yres + vfront - 1;
- _par->VertSyncEnd = yres + vfront + vsync - 1;
- if (_par->VertRes >= 1024) {
- _par->VertTotal /= 2;
- _par->VertSyncStart /= 2;
- _par->VertSyncEnd /= 2;
- _par->VertDispEnd /= 2;
- }
- if (_par->multiplexing) {
- _par->HorizTotal /= 2;
- _par->HorizSyncStart /= 2;
- _par->HorizSyncEnd /= 2;
- _par->HorizDispEnd /= 2;
- }
- if (_par->VertRes >= 1280) {
- printk (KERN_WARNING "clgen: ERROR: VerticalTotal >= 1280; special treatment required! (TODO)n");
- DPRINTK ("EXIT - EINVAL errorn");
- return -EINVAL;
- }
- DPRINTK ("EXITn");
- return 0;
- }
- static int clgen_encode_var (struct fb_var_screeninfo *var, const void *par,
- struct fb_info_gen *info)
- {
- DPRINTK ("ENTERn");
- *var = ((struct clgenfb_par *) par)->var;
- DPRINTK ("EXITn");
- return 0;
- }
- /* get current video mode */
- static void clgen_get_par (void *par, struct fb_info_gen *info)
- {
- struct clgenfb_par *_par = (struct clgenfb_par *) par;
- struct clgenfb_info *_info = (struct clgenfb_info *) info;
- DPRINTK ("ENTERn");
- *_par = _info->currentmode;
- DPRINTK ("EXITn");
- }
- static void clgen_set_mclk (const struct clgenfb_info *fb_info, int val, int div)
- {
- assert (fb_info != NULL);
- if (div == 2) {
- /* VCLK = MCLK/2 */
- unsigned char old = vga_rseq (fb_info->regs, CL_SEQR1E);
- vga_wseq (fb_info->regs, CL_SEQR1E, old | 0x1);
- vga_wseq (fb_info->regs, CL_SEQR1F, 0x40 | (val & 0x3f));
- } else if (div == 1) {
- /* VCLK = MCLK */
- unsigned char old = vga_rseq (fb_info->regs, CL_SEQR1E);
- vga_wseq (fb_info->regs, CL_SEQR1E, old & ~0x1);
- vga_wseq (fb_info->regs, CL_SEQR1F, 0x40 | (val & 0x3f));
- } else {
- vga_wseq (fb_info->regs, CL_SEQR1F, val & 0x3f);
- }
- }
- /*************************************************************************
- clgen_set_par()
- actually writes the values for a new video mode into the hardware,
- **************************************************************************/
- static void clgen_set_par (const void *par, struct fb_info_gen *info)
- {
- unsigned char tmp;
- int offset = 0;
- struct clgenfb_par *_par = (struct clgenfb_par *) par;
- struct clgenfb_info *fb_info = (struct clgenfb_info *) info;
- const struct clgen_board_info_rec *bi;
- DPRINTK ("ENTERn");
- DPRINTK ("Requested mode: %dx%dx%dn",
- _par->var.xres, _par->var.yres, _par->var.bits_per_pixel);
- DPRINTK ("pixclock: %dn", _par->var.pixclock);
- bi = &clgen_board_info[fb_info->btype];
- /* unlock register VGA_CRTC_H_TOTAL..CRT7 */
- vga_wcrt (fb_info->regs, VGA_CRTC_V_SYNC_END, 0x20); /* previously: 0x00) */
- /* if debugging is enabled, all parameters get output before writing */
- DPRINTK ("CRT0: %ldn", _par->HorizTotal);
- vga_wcrt (fb_info->regs, VGA_CRTC_H_TOTAL, _par->HorizTotal);
- DPRINTK ("CRT1: %ldn", _par->HorizDispEnd);
- vga_wcrt (fb_info->regs, VGA_CRTC_H_DISP, _par->HorizDispEnd);
- DPRINTK ("CRT2: %ldn", _par->HorizBlankStart);
- vga_wcrt (fb_info->regs, VGA_CRTC_H_BLANK_START, _par->HorizBlankStart);
- DPRINTK ("CRT3: 128+%ldn", _par->HorizBlankEnd % 32); /* + 128: Compatible read */
- vga_wcrt (fb_info->regs, VGA_CRTC_H_BLANK_END, 128 + (_par->HorizBlankEnd % 32));
- DPRINTK ("CRT4: %ldn", _par->HorizSyncStart);
- vga_wcrt (fb_info->regs, VGA_CRTC_H_SYNC_START, _par->HorizSyncStart);
- tmp = _par->HorizSyncEnd % 32;
- if (_par->HorizBlankEnd & 32)
- tmp += 128;
- DPRINTK ("CRT5: %dn", tmp);
- vga_wcrt (fb_info->regs, VGA_CRTC_H_SYNC_END, tmp);
- DPRINTK ("CRT6: %ldn", _par->VertTotal & 0xff);
- vga_wcrt (fb_info->regs, VGA_CRTC_V_TOTAL, (_par->VertTotal & 0xff));
- tmp = 16; /* LineCompare bit #9 */
- if (_par->VertTotal & 256)
- tmp |= 1;
- if (_par->VertDispEnd & 256)
- tmp |= 2;
- if (_par->VertSyncStart & 256)
- tmp |= 4;
- if (_par->VertBlankStart & 256)
- tmp |= 8;
- if (_par->VertTotal & 512)
- tmp |= 32;
- if (_par->VertDispEnd & 512)
- tmp |= 64;
- if (_par->VertSyncStart & 512)
- tmp |= 128;
- DPRINTK ("CRT7: %dn", tmp);
- vga_wcrt (fb_info->regs, VGA_CRTC_OVERFLOW, tmp);
- tmp = 0x40; /* LineCompare bit #8 */
- if (_par->VertBlankStart & 512)
- tmp |= 0x20;
- if (_par->var.vmode & FB_VMODE_DOUBLE)
- tmp |= 0x80;
- DPRINTK ("CRT9: %dn", tmp);
- vga_wcrt (fb_info->regs, VGA_CRTC_MAX_SCAN, tmp);
- DPRINTK ("CRT10: %ldn", _par->VertSyncStart & 0xff);
- vga_wcrt (fb_info->regs, VGA_CRTC_V_SYNC_START, (_par->VertSyncStart & 0xff));
- DPRINTK ("CRT11: 64+32+%ldn", _par->VertSyncEnd % 16);
- vga_wcrt (fb_info->regs, VGA_CRTC_V_SYNC_END, (_par->VertSyncEnd % 16 + 64 + 32));
- DPRINTK ("CRT12: %ldn", _par->VertDispEnd & 0xff);
- vga_wcrt (fb_info->regs, VGA_CRTC_V_DISP_END, (_par->VertDispEnd & 0xff));
- DPRINTK ("CRT15: %ldn", _par->VertBlankStart & 0xff);
- vga_wcrt (fb_info->regs, VGA_CRTC_V_BLANK_START, (_par->VertBlankStart & 0xff));
- DPRINTK ("CRT16: %ldn", _par->VertBlankEnd & 0xff);
- vga_wcrt (fb_info->regs, VGA_CRTC_V_BLANK_END, (_par->VertBlankEnd & 0xff));
- DPRINTK ("CRT18: 0xffn");
- vga_wcrt (fb_info->regs, VGA_CRTC_LINE_COMPARE, 0xff);
- tmp = 0;
- if (_par->var.vmode & FB_VMODE_INTERLACED)
- tmp |= 1;
- if (_par->HorizBlankEnd & 64)
- tmp |= 16;
- if (_par->HorizBlankEnd & 128)
- tmp |= 32;
- if (_par->VertBlankEnd & 256)
- tmp |= 64;
- if (_par->VertBlankEnd & 512)
- tmp |= 128;
- DPRINTK ("CRT1a: %dn", tmp);
- vga_wcrt (fb_info->regs, CL_CRT1A, tmp);
- /* set VCLK0 */
- /* hardware RefClock: 14.31818 MHz */
- /* formula: VClk = (OSC * N) / (D * (1+P)) */
- /* Example: VClk = (14.31818 * 91) / (23 * (1+1)) = 28.325 MHz */
- vga_wseq (fb_info->regs, CL_SEQRB, _par->nom);
- tmp = _par->den << 1;
- if (_par->div != 0)
- tmp |= 1;
- if ((fb_info->btype == BT_SD64) ||
- (fb_info->btype == BT_ALPINE) ||
- (fb_info->btype == BT_GD5480))
- tmp |= 0x80; /* 6 bit denom; ONLY 5434!!! (bugged me 10 days) */
- DPRINTK ("CL_SEQR1B: %ldn", (long) tmp);
- vga_wseq (fb_info->regs, CL_SEQR1B, tmp);
- if (_par->VertRes >= 1024)
- /* 1280x1024 */
- vga_wcrt (fb_info->regs, VGA_CRTC_MODE, 0xc7);
- else
- /* mode control: VGA_CRTC_START_HI enable, ROTATE(?), 16bit
- * address wrap, no compat. */
- vga_wcrt (fb_info->regs, VGA_CRTC_MODE, 0xc3);
- /* HAEH? vga_wcrt (fb_info->regs, VGA_CRTC_V_SYNC_END, 0x20); * previously: 0x00 unlock VGA_CRTC_H_TOTAL..CRT7 */
- /* don't know if it would hurt to also program this if no interlaced */
- /* mode is used, but I feel better this way.. :-) */
- if (_par->var.vmode & FB_VMODE_INTERLACED)
- vga_wcrt (fb_info->regs, VGA_CRTC_REGS, _par->HorizTotal / 2);
- else
- vga_wcrt (fb_info->regs, VGA_CRTC_REGS, 0x00); /* interlace control */
- vga_wseq (fb_info->regs, VGA_SEQ_CHARACTER_MAP, 0);
- /* adjust horizontal/vertical sync type (low/high) */
- tmp = 0x03; /* enable display memory & CRTC I/O address for color mode */
- if (_par->var.sync & FB_SYNC_HOR_HIGH_ACT)
- tmp |= 0x40;
- if (_par->var.sync & FB_SYNC_VERT_HIGH_ACT)
- tmp |= 0x80;
- WGen (fb_info, VGA_MIS_W, tmp);
- vga_wcrt (fb_info->regs, VGA_CRTC_PRESET_ROW, 0); /* Screen A Preset Row-Scan register */
- vga_wcrt (fb_info->regs, VGA_CRTC_CURSOR_START, 0); /* text cursor on and start line */
- vga_wcrt (fb_info->regs, VGA_CRTC_CURSOR_END, 31); /* text cursor end line */
- /******************************************************
- *
- * 1 bpp
- *
- */
- /* programming for different color depths */
- if (_par->var.bits_per_pixel == 1) {
- DPRINTK ("clgen: preparing for 1 bit deep displayn");
- vga_wgfx (fb_info->regs, VGA_GFX_MODE, 0); /* mode register */
- /* SR07 */
- switch (fb_info->btype) {
- case BT_SD64:
- case BT_PICCOLO:
- case BT_PICASSO:
- case BT_SPECTRUM:
- case BT_PICASSO4:
- case BT_ALPINE:
- case BT_GD5480:
- DPRINTK (" (for GD54xx)n");
- vga_wseq (fb_info->regs, CL_SEQR7,
- _par->multiplexing ?
- bi->sr07_1bpp_mux : bi->sr07_1bpp);
- break;
- case BT_LAGUNA:
- DPRINTK (" (for GD546x)n");
- vga_wseq (fb_info->regs, CL_SEQR7,
- vga_rseq (fb_info->regs, CL_SEQR7) & ~0x01);
- break;
- default:
- printk (KERN_WARNING "clgen: unknown Boardn");
- break;
- }
- /* Extended Sequencer Mode */
- switch (fb_info->btype) {
- case BT_SD64:
- /* setting the SEQRF on SD64 is not necessary (only during init) */
- DPRINTK ("(for SD64)n");
- vga_wseq (fb_info->regs, CL_SEQR1F, 0x1a); /* MCLK select */
- break;
- case BT_PICCOLO:
- DPRINTK ("(for Piccolo)n");
- /* ### ueberall 0x22? */
- vga_wseq (fb_info->regs, CL_SEQR1F, 0x22); /* ##vorher 1c MCLK select */
- vga_wseq (fb_info->regs, CL_SEQRF, 0xb0); /* evtl d0 bei 1 bit? avoid FIFO underruns..? */
- break;
- case BT_PICASSO:
- DPRINTK ("(for Picasso)n");
- vga_wseq (fb_info->regs, CL_SEQR1F, 0x22); /* ##vorher 22 MCLK select */
- vga_wseq (fb_info->regs, CL_SEQRF, 0xd0); /* ## vorher d0 avoid FIFO underruns..? */
- break;
- case BT_SPECTRUM:
- DPRINTK ("(for Spectrum)n");
- /* ### ueberall 0x22? */
- vga_wseq (fb_info->regs, CL_SEQR1F, 0x22); /* ##vorher 1c MCLK select */
- vga_wseq (fb_info->regs, CL_SEQRF, 0xb0); /* evtl d0? avoid FIFO underruns..? */
- break;
- case BT_PICASSO4:
- case BT_ALPINE:
- case BT_GD5480:
- case BT_LAGUNA:
- DPRINTK (" (for GD54xx)n");
- /* do nothing */
- break;
- default:
- printk (KERN_WARNING "clgen: unknown Boardn");
- break;
- }
- WGen (fb_info, VGA_PEL_MSK, 0x01); /* pixel mask: pass-through for first plane */
- if (_par->multiplexing)
- WHDR (fb_info, 0x4a); /* hidden dac reg: 1280x1024 */
- else
- WHDR (fb_info, 0); /* hidden dac: nothing */
- vga_wseq (fb_info->regs, VGA_SEQ_MEMORY_MODE, 0x06); /* memory mode: odd/even, ext. memory */
- vga_wseq (fb_info->regs, VGA_SEQ_PLANE_WRITE, 0x01); /* plane mask: only write to first plane */
- offset = _par->var.xres_virtual / 16;
- }
- /******************************************************
- *
- * 8 bpp
- *
- */
- else if (_par->var.bits_per_pixel == 8) {
- DPRINTK ("clgen: preparing for 8 bit deep displayn");
- switch (fb_info->btype) {
- case BT_SD64:
- case BT_PICCOLO:
- case BT_PICASSO:
- case BT_SPECTRUM:
- case BT_PICASSO4:
- case BT_ALPINE:
- case BT_GD5480:
- DPRINTK (" (for GD54xx)n");
- vga_wseq (fb_info->regs, CL_SEQR7,
- _par->multiplexing ?
- bi->sr07_8bpp_mux : bi->sr07_8bpp);
- break;
- case BT_LAGUNA:
- DPRINTK (" (for GD546x)n");
- vga_wseq (fb_info->regs, CL_SEQR7,
- vga_rseq (fb_info->regs, CL_SEQR7) | 0x01);
- break;
- default:
- printk (KERN_WARNING "clgen: unknown Boardn");
- break;
- }
- switch (fb_info->btype) {
- case BT_SD64:
- vga_wseq (fb_info->regs, CL_SEQR1F, 0x1d); /* MCLK select */
- break;
- case BT_PICCOLO:
- vga_wseq (fb_info->regs, CL_SEQR1F, 0x22); /* ### vorher 1c MCLK select */
- vga_wseq (fb_info->regs, CL_SEQRF, 0xb0); /* Fast Page-Mode writes */
- break;
- case BT_PICASSO:
- vga_wseq (fb_info->regs, CL_SEQR1F, 0x22); /* ### vorher 1c MCLK select */
- vga_wseq (fb_info->regs, CL_SEQRF, 0xb0); /* Fast Page-Mode writes */
- break;
- case BT_SPECTRUM:
- vga_wseq (fb_info->regs, CL_SEQR1F, 0x22); /* ### vorher 1c MCLK select */
- vga_wseq (fb_info->regs, CL_SEQRF, 0xb0); /* Fast Page-Mode writes */
- break;
- case BT_PICASSO4:
- #ifdef CONFIG_ZORRO
- vga_wseq (fb_info->regs, CL_SEQRF, 0xb8); /* ### INCOMPLETE!! */
- #endif
- /* vga_wseq (fb_info->regs, CL_SEQR1F, 0x1c); */
- break;
- case BT_ALPINE:
- DPRINTK (" (for GD543x)n");
- clgen_set_mclk (fb_info, _par->mclk, _par->divMCLK);
- /* We already set SRF and SR1F */
- break;
- case BT_GD5480:
- case BT_LAGUNA:
- DPRINTK (" (for GD54xx)n");
- /* do nothing */
- break;
- default:
- printk (KERN_WARNING "clgen: unknown Boardn");
- break;
- }
- vga_wgfx (fb_info->regs, VGA_GFX_MODE, 64); /* mode register: 256 color mode */
- WGen (fb_info, VGA_PEL_MSK, 0xff); /* pixel mask: pass-through all planes */
- if (_par->multiplexing)
- WHDR (fb_info, 0x4a); /* hidden dac reg: 1280x1024 */
- else
- WHDR (fb_info, 0); /* hidden dac: nothing */
- vga_wseq (fb_info->regs, VGA_SEQ_MEMORY_MODE, 0x0a); /* memory mode: chain4, ext. memory */
- vga_wseq (fb_info->regs, VGA_SEQ_PLANE_WRITE, 0xff); /* plane mask: enable writing to all 4 planes */
- offset = _par->var.xres_virtual / 8;
- }
- /******************************************************
- *
- * 16 bpp
- *
- */
- else if (_par->var.bits_per_pixel == 16) {
- DPRINTK ("clgen: preparing for 16 bit deep displayn");
- switch (fb_info->btype) {
- case BT_SD64:
- vga_wseq (fb_info->regs, CL_SEQR7, 0xf7); /* Extended Sequencer Mode: 256c col. mode */
- vga_wseq (fb_info->regs, CL_SEQR1F, 0x1e); /* MCLK select */
- break;
- case BT_PICCOLO:
- vga_wseq (fb_info->regs, CL_SEQR7, 0x87);
- vga_wseq (fb_info->regs, CL_SEQRF, 0xb0); /* Fast Page-Mode writes */
- vga_wseq (fb_info->regs, CL_SEQR1F, 0x22); /* MCLK select */
- break;
- case BT_PICASSO:
- vga_wseq (fb_info->regs, CL_SEQR7, 0x27);
- vga_wseq (fb_info->regs, CL_SEQRF, 0xb0); /* Fast Page-Mode writes */
- vga_wseq (fb_info->regs, CL_SEQR1F, 0x22); /* MCLK select */
- break;
- case BT_SPECTRUM:
- vga_wseq (fb_info->regs, CL_SEQR7, 0x87);
- vga_wseq (fb_info->regs, CL_SEQRF, 0xb0); /* Fast Page-Mode writes */
- vga_wseq (fb_info->regs, CL_SEQR1F, 0x22); /* MCLK select */
- break;
- case BT_PICASSO4:
- vga_wseq (fb_info->regs, CL_SEQR7, 0x27);
- /* vga_wseq (fb_info->regs, CL_SEQR1F, 0x1c); */
- break;
- case BT_ALPINE:
- DPRINTK (" (for GD543x)n");
- if (_par->HorizRes >= 1024)
- vga_wseq (fb_info->regs, CL_SEQR7, 0xa7);
- else
- vga_wseq (fb_info->regs, CL_SEQR7, 0xa3);
- clgen_set_mclk (fb_info, _par->mclk, _par->divMCLK);
- break;
- case BT_GD5480:
- DPRINTK (" (for GD5480)n");
- vga_wseq (fb_info->regs, CL_SEQR7, 0x17);
- /* We already set SRF and SR1F */
- break;
- case BT_LAGUNA:
- DPRINTK (" (for GD546x)n");
- vga_wseq (fb_info->regs, CL_SEQR7,
- vga_rseq (fb_info->regs, CL_SEQR7) & ~0x01);
- break;
- default:
- printk (KERN_WARNING "CLGEN: unknown Boardn");
- break;
- }
- vga_wgfx (fb_info->regs, VGA_GFX_MODE, 64); /* mode register: 256 color mode */
- WGen (fb_info, VGA_PEL_MSK, 0xff); /* pixel mask: pass-through all planes */
- #ifdef CONFIG_PCI
- WHDR (fb_info, 0xc0); /* Copy Xbh */
- #elif defined(CONFIG_ZORRO)
- /* FIXME: CONFIG_PCI and CONFIG_ZORRO may be defined both */
- WHDR (fb_info, 0xa0); /* hidden dac reg: nothing special */
- #endif
- vga_wseq (fb_info->regs, VGA_SEQ_MEMORY_MODE, 0x0a); /* memory mode: chain4, ext. memory */
- vga_wseq (fb_info->regs, VGA_SEQ_PLANE_WRITE, 0xff); /* plane mask: enable writing to all 4 planes */
- offset = _par->var.xres_virtual / 4;
- }
- /******************************************************
- *
- * 32 bpp
- *
- */
- else if (_par->var.bits_per_pixel == 32) {
- DPRINTK ("clgen: preparing for 24/32 bit deep displayn");
- switch (fb_info->btype) {
- case BT_SD64:
- vga_wseq (fb_info->regs, CL_SEQR7, 0xf9); /* Extended Sequencer Mode: 256c col. mode */
- vga_wseq (fb_info->regs, CL_SEQR1F, 0x1e); /* MCLK select */
- break;
- case BT_PICCOLO:
- vga_wseq (fb_info->regs, CL_SEQR7, 0x85);
- vga_wseq (fb_info->regs, CL_SEQRF, 0xb0); /* Fast Page-Mode writes */
- vga_wseq (fb_info->regs, CL_SEQR1F, 0x22); /* MCLK select */
- break;
- case BT_PICASSO:
- vga_wseq (fb_info->regs, CL_SEQR7, 0x25);
- vga_wseq (fb_info->regs, CL_SEQRF, 0xb0); /* Fast Page-Mode writes */
- vga_wseq (fb_info->regs, CL_SEQR1F, 0x22); /* MCLK select */
- break;
- case BT_SPECTRUM:
- vga_wseq (fb_info->regs, CL_SEQR7, 0x85);
- vga_wseq (fb_info->regs, CL_SEQRF, 0xb0); /* Fast Page-Mode writes */
- vga_wseq (fb_info->regs, CL_SEQR1F, 0x22); /* MCLK select */
- break;
- case BT_PICASSO4:
- vga_wseq (fb_info->regs, CL_SEQR7, 0x25);
- /* vga_wseq (fb_info->regs, CL_SEQR1F, 0x1c); */
- break;
- case BT_ALPINE:
- DPRINTK (" (for GD543x)n");
- vga_wseq (fb_info->regs, CL_SEQR7, 0xa9);
- clgen_set_mclk (fb_info, _par->mclk, _par->divMCLK);
- break;
- case BT_GD5480:
- DPRINTK (" (for GD5480)n");
- vga_wseq (fb_info->regs, CL_SEQR7, 0x19);
- /* We already set SRF and SR1F */
- break;
- case BT_LAGUNA:
- DPRINTK (" (for GD546x)n");
- vga_wseq (fb_info->regs, CL_SEQR7,
- vga_rseq (fb_info->regs, CL_SEQR7) & ~0x01);
- break;
- default:
- printk (KERN_WARNING "clgen: unknown Boardn");
- break;
- }
- vga_wgfx (fb_info->regs, VGA_GFX_MODE, 64); /* mode register: 256 color mode */
- WGen (fb_info, VGA_PEL_MSK, 0xff); /* pixel mask: pass-through all planes */
- WHDR (fb_info, 0xc5); /* hidden dac reg: 8-8-8 mode (24 or 32) */
- vga_wseq (fb_info->regs, VGA_SEQ_MEMORY_MODE, 0x0a); /* memory mode: chain4, ext. memory */
- vga_wseq (fb_info->regs, VGA_SEQ_PLANE_WRITE, 0xff); /* plane mask: enable writing to all 4 planes */
- offset = _par->var.xres_virtual / 4;
- }
- /******************************************************
- *
- * unknown/unsupported bpp
- *
- */
- else {
- printk (KERN_ERR "clgen: What's this?? requested color depth == %d.n",
- _par->var.bits_per_pixel);
- }
- vga_wcrt (fb_info->regs, VGA_CRTC_OFFSET, offset & 0xff);
- tmp = 0x22;
- if (offset & 0x100)
- tmp |= 0x10; /* offset overflow bit */
- vga_wcrt (fb_info->regs, CL_CRT1B, tmp); /* screen start addr #16-18, fastpagemode cycles */
- if (fb_info->btype == BT_SD64 ||
- fb_info->btype == BT_PICASSO4 ||
- fb_info->btype == BT_ALPINE ||
- fb_info->btype == BT_GD5480)
- vga_wcrt (fb_info->regs, CL_CRT1D, 0x00); /* screen start address bit 19 */
- vga_wcrt (fb_info->regs, VGA_CRTC_CURSOR_HI, 0); /* text cursor location high */
- vga_wcrt (fb_info->regs, VGA_CRTC_CURSOR_LO, 0); /* text cursor location low */
- vga_wcrt (fb_info->regs, VGA_CRTC_UNDERLINE, 0); /* underline row scanline = at very bottom */
- vga_wattr (fb_info->regs, VGA_ATC_MODE, 1); /* controller mode */
- vga_wattr (fb_info->regs, VGA_ATC_OVERSCAN, 0); /* overscan (border) color */
- vga_wattr (fb_info->regs, VGA_ATC_PLANE_ENABLE, 15); /* color plane enable */
- vga_wattr (fb_info->regs, CL_AR33, 0); /* pixel panning */
- vga_wattr (fb_info->regs, VGA_ATC_COLOR_PAGE, 0); /* color select */
- /* [ EGS: SetOffset(); ] */
- /* From SetOffset(): Turn on VideoEnable bit in Attribute controller */
- AttrOn (fb_info);
- vga_wgfx (fb_info->regs, VGA_GFX_SR_VALUE, 0); /* set/reset register */
- vga_wgfx (fb_info->regs, VGA_GFX_SR_ENABLE, 0); /* set/reset enable */
- vga_wgfx (fb_info->regs, VGA_GFX_COMPARE_VALUE, 0); /* color compare */
- vga_wgfx (fb_info->regs, VGA_GFX_DATA_ROTATE, 0); /* data rotate */
- vga_wgfx (fb_info->regs, VGA_GFX_PLANE_READ, 0); /* read map select */
- vga_wgfx (fb_info->regs, VGA_GFX_MISC, 1); /* miscellaneous register */
- vga_wgfx (fb_info->regs, VGA_GFX_COMPARE_MASK, 15); /* color don't care */
- vga_wgfx (fb_info->regs, VGA_GFX_BIT_MASK, 255); /* bit mask */
- vga_wseq (fb_info->regs, CL_SEQR12, 0x0); /* graphics cursor attributes: nothing special */
- /* finally, turn on everything - turn off "FullBandwidth" bit */
- /* also, set "DotClock%2" bit where requested */
- tmp = 0x01;
- /*** FB_VMODE_CLOCK_HALVE in linux/fb.h not defined anymore ?
- if (var->vmode & FB_VMODE_CLOCK_HALVE)
- tmp |= 0x08;
- */
- vga_wseq (fb_info->regs, VGA_SEQ_CLOCK_MODE, tmp);
- DPRINTK ("CL_SEQR1: %dn", tmp);
- fb_info->currentmode = *_par;
- DPRINTK ("virtual offset: (%d,%d)n", _par->var.xoffset, _par->var.yoffset);
- /* pan to requested offset */
- clgen_pan_display (&fb_info->currentmode.var, (struct fb_info_gen *) fb_info);
- #ifdef CLGEN_DEBUG
- clgen_dump ();
- #endif
- DPRINTK ("EXITn");
- return;
- }
- static int clgen_getcolreg (unsigned regno, unsigned *red, unsigned *green,
- unsigned *blue, unsigned *transp,
- struct fb_info *info)
- {
- struct clgenfb_info *fb_info = (struct clgenfb_info *)info;
- if (regno > 255)
- return 1;
- *red = fb_info->palette[regno].red;
- *green = fb_info->palette[regno].green;
- *blue = fb_info->palette[regno].blue;
- *transp = 0;
- return 0;
- }
- static int clgen_setcolreg (unsigned regno, unsigned red, unsigned green,
- unsigned blue, unsigned transp,
- struct fb_info *info)
- {
- struct clgenfb_info *fb_info = (struct clgenfb_info *) info;
- if (regno > 255)
- return -EINVAL;
- #ifdef FBCON_HAS_CFB8
- switch (fb_info->currentmode.var.bits_per_pixel) {
- case 8:
- /* "transparent" stuff is completely ignored. */
- WClut (fb_info, regno, red >> 10, green >> 10, blue >> 10);
- break;
- default:
- /* do nothing */
- break;
- }
- #endif /* FBCON_HAS_CFB8 */
- fb_info->palette[regno].red = red;
- fb_info->palette[regno].green = green;
- fb_info->palette[regno].blue = blue;
- if (regno >= 16)
- return 0;
- switch (fb_info->currentmode.var.bits_per_pixel) {
- #ifdef FBCON_HAS_CFB16
- case 16:
- assert (regno < 16);
- if(isPReP) {
- fb_info->fbcon_cmap.cfb16[regno] =
- ((red & 0xf800) >> 9) |
- ((green & 0xf800) >> 14) |
- ((green & 0xf800) << 2) |
- ((blue & 0xf800) >> 3);
- } else {
- fb_info->fbcon_cmap.cfb16[regno] =
- ((red & 0xf800) >> 1) |
- ((green & 0xf800) >> 6) |
- ((blue & 0xf800) >> 11);
- }
- #endif /* FBCON_HAS_CFB16 */
- #ifdef FBCON_HAS_CFB24
- case 24:
- assert (regno < 16);
- fb_info->fbcon_cmap.cfb24[regno] =
- (red << fb_info->currentmode.var.red.offset) |
- (green << fb_info->currentmode.var.green.offset) |
- (blue << fb_info->currentmode.var.blue.offset);
- break;
- #endif /* FBCON_HAS_CFB24 */
- #ifdef FBCON_HAS_CFB32
- case 32:
- assert (regno < 16);
- if(isPReP) {
- fb_info->fbcon_cmap.cfb32[regno] =
- ((red & 0xff00)) |
- ((green & 0xff00) << 8) |
- ((blue & 0xff00) << 16);
- } else {
- fb_info->fbcon_cmap.cfb32[regno] =
- ((red & 0xff00) << 8) |
- ((green & 0xff00)) |
- ((blue & 0xff00) >> 8);
- }
- break;
- #endif /* FBCON_HAS_CFB32 */
- default:
- /* do nothing */
- break;
- }
- return 0;
- }
- /*************************************************************************
- clgen_pan_display()
- performs display panning - provided hardware permits this
- **************************************************************************/
- static int clgen_pan_display (const struct fb_var_screeninfo *var,
- struct fb_info_gen *info)
- {
- int xoffset = 0;
- int yoffset = 0;
- unsigned long base;
- unsigned char tmp = 0, tmp2 = 0, xpix;
- struct clgenfb_info *fb_info = (struct clgenfb_info *) info;
- DPRINTK ("ENTERn");
- /* no range checks for xoffset and yoffset, */
- /* as fbgen_pan_display has already done this */
- fb_info->currentmode.var.xoffset = var->xoffset;
- fb_info->currentmode.var.yoffset = var->yoffset;
- xoffset = var->xoffset * fb_info->currentmode.var.bits_per_pixel / 8;
- yoffset = var->yoffset;
- base = yoffset * fb_info->currentmode.line_length + xoffset;
- if (fb_info->currentmode.var.bits_per_pixel == 1) {
- /* base is already correct */
- xpix = (unsigned char) (var->xoffset % 8);
- } else {
- base /= 4;
- xpix = (unsigned char) ((xoffset % 4) * 2);
- }
- /* lower 8 + 8 bits of screen start address */
- vga_wcrt (fb_info->regs, VGA_CRTC_START_LO, (unsigned char) (base & 0xff));
- vga_wcrt (fb_info->regs, VGA_CRTC_START_HI, (unsigned char) (base >> 8));
- /* construct bits 16, 17 and 18 of screen start address */
- if (base & 0x10000)
- tmp |= 0x01;
- if (base & 0x20000)
- tmp |= 0x04;
- if (base & 0x40000)
- tmp |= 0x08;
- tmp2 = (vga_rcrt (fb_info->regs, CL_CRT1B) & 0xf2) | tmp; /* 0xf2 is %11110010, exclude tmp bits */
- vga_wcrt (fb_info->regs, CL_CRT1B, tmp2);
- /* construct bit 19 of screen start address */
- if (clgen_board_info[fb_info->btype].scrn_start_bit19) {
- tmp2 = 0;
- if (base & 0x80000)
- tmp2 = 0x80;
- vga_wcrt (fb_info->regs, CL_CRT1D, tmp2);
- }
- /* write pixel panning value to AR33; this does not quite work in 8bpp */
- /* ### Piccolo..? Will this work? */
- if (fb_info->currentmode.var.bits_per_pixel == 1)
- vga_wattr (fb_info->regs, CL_AR33, xpix);
- DPRINTK ("EXITn");
- return (0);
- }
- static int clgen_blank (int blank_mode, struct fb_info_gen *info)
- {
- /*
- * Blank the screen if blank_mode != 0, else unblank. If blank == NULL
- * then the caller blanks by setting the CLUT (Color Look Up Table) to all
- * black. Return 0 if blanking succeeded, != 0 if un-/blanking failed due
- * to e.g. a video mode which doesn't support it. Implements VESA suspend
- * and powerdown modes on hardware that supports disabling hsync/vsync:
- * blank_mode == 2: suspend vsync
- * blank_mode == 3: suspend hsync
- * blank_mode == 4: powerdown
- */
- unsigned char val;
- static int current_mode = 0;
- struct clgenfb_info *fb_info = (struct clgenfb_info *) info;
- DPRINTK ("ENTER, blank mode = %dn", blank_mode);
- if (current_mode == blank_mode) {
- DPRINTK ("EXIT, returning 0n");
- return 0;
- }
- /* Undo current */
- switch (current_mode) {
- case 0: /* Screen is normal */
- break;
- case 1: /* Screen is blanked */
- val = vga_rseq (fb_info->regs, VGA_SEQ_CLOCK_MODE);
- vga_wseq (fb_info->regs, VGA_SEQ_CLOCK_MODE, val & 0xdf); /* clear "FullBandwidth" bit */
- break;
- case 2: /* vsync suspended */
- case 3: /* hsync suspended */
- case 4: /* sceen is powered down */
- vga_wgfx (fb_info->regs, CL_GRE, 0x00);
- break;
- default:
- DPRINTK ("EXIT, returning 1n");
- return 1;
- }
- /* set new */
- switch (blank_mode) {
- case 0: /* Unblank screen */
- break;
- case 1: /* Blank screen */
- val = vga_rseq (fb_info->regs, VGA_SEQ_CLOCK_MODE);
- vga_wseq (fb_info->regs, VGA_SEQ_CLOCK_MODE, val | 0x20); /* set "FullBandwidth" bit */
- break;
- case 2: /* suspend vsync */
- vga_wgfx (fb_info->regs, CL_GRE, 0x04);
- break;
- case 3: /* suspend hsync */
- vga_wgfx (fb_info->regs, CL_GRE, 0x02);
- break;
- case 4: /* powerdown */
- vga_wgfx (fb_info->regs, CL_GRE, 0x06);
- break;
- default:
- DPRINTK ("EXIT, returning 1n");
- return 1;
- }
- current_mode = blank_mode;
- DPRINTK ("EXIT, returning 0n");
- return 0;
- }
- /**** END Hardware specific Routines **************************************/
- /****************************************************************************/
- /**** BEGIN Internal Routines ***********************************************/
- static void __init init_vgachip (struct clgenfb_info *fb_info)
- {
- const struct clgen_board_info_rec *bi;
- DPRINTK ("ENTERn");
- assert (fb_info != NULL);
- bi = &clgen_board_info[fb_info->btype];
- /* reset board globally */
- switch (fb_info->btype) {
- case BT_PICCOLO:
- WSFR (fb_info, 0x01);
- udelay (500);
- WSFR (fb_info, 0x51);
- udelay (500);
- break;
- case BT_PICASSO:
- WSFR2 (fb_info, 0xff);
- udelay (500);
- break;
- case BT_SD64:
- case BT_SPECTRUM:
- WSFR (fb_info, 0x1f);
- udelay (500);
- WSFR (fb_info, 0x4f);
- udelay (500);
- break;
- case BT_PICASSO4:
- vga_wcrt (fb_info->regs, CL_CRT51, 0x00); /* disable flickerfixer */
- mdelay (100);
- vga_wgfx (fb_info->regs, CL_GR2F, 0x00); /* from Klaus' NetBSD driver: */
- vga_wgfx (fb_info->regs, CL_GR33, 0x00); /* put blitter into 542x compat */
- vga_wgfx (fb_info->regs, CL_GR31, 0x00); /* mode */
- break;
- case BT_GD5480:
- vga_wgfx (fb_info->regs, CL_GR2F, 0x00); /* from Klaus' NetBSD driver: */
- break;
- case BT_ALPINE:
- /* Nothing to do to reset the board. */
- break;
- default:
- printk (KERN_ERR "clgen: Warning: Unknown board typen");
- break;
- }
- assert (fb_info->size > 0); /* make sure RAM size set by this point */
- /* assume it's a "large memory" board (2/4 MB) */
- fb_info->smallboard = FALSE;
- /* the P4 is not fully initialized here; I rely on it having been */
- /* inited under AmigaOS already, which seems to work just fine */
- /* (Klaus advised to do it this way) */
- if (fb_info->btype != BT_PICASSO4) {
- WGen (fb_info, CL_VSSM, 0x10); /* EGS: 0x16 */
- WGen (fb_info, CL_POS102, 0x01);
- WGen (fb_info, CL_VSSM, 0x08); /* EGS: 0x0e */
- if (fb_info->btype != BT_SD64)
- WGen (fb_info, CL_VSSM2, 0x01);
- vga_wseq (fb_info->regs, CL_SEQR0, 0x03); /* reset sequencer logic */
- vga_wseq (fb_info->regs, VGA_SEQ_CLOCK_MODE, 0x21); /* FullBandwidth (video off) and 8/9 dot clock */
- WGen (fb_info, VGA_MIS_W, 0xc1); /* polarity (-/-), disable access to display memory, VGA_CRTC_START_HI base address: color */
- /* vga_wgfx (fb_info->regs, CL_GRA, 0xce); "magic cookie" - doesn't make any sense to me.. */
- vga_wseq (fb_info->regs, CL_SEQR6, 0x12); /* unlock all extension registers */
- vga_wgfx (fb_info->regs, CL_GR31, 0x04); /* reset blitter */
- switch (fb_info->btype) {
- case BT_GD5480:
- vga_wseq (fb_info->regs, CL_SEQRF, 0x98);
- break;
- case BT_ALPINE:
- break;
- case BT_SD64:
- vga_wseq (fb_info->regs, CL_SEQRF, 0xb8);
- break;
- default:
- vga_wseq (fb_info->regs, CL_SEQR16, 0x0f);
- vga_wseq (fb_info->regs, CL_SEQRF, 0xb0);
- break;
- }
- }
- vga_wseq (fb_info->regs, VGA_SEQ_PLANE_WRITE, 0xff); /* plane mask: nothing */
- vga_wseq (fb_info->regs, VGA_SEQ_CHARACTER_MAP, 0x00); /* character map select: doesn't even matter in gx mode */
- vga_wseq (fb_info->regs, VGA_SEQ_MEMORY_MODE, 0x0e); /* memory mode: chain-4, no odd/even, ext. memory */
- /* controller-internal base address of video memory */
- if (bi->init_sr07)
- vga_wseq (fb_info->regs, CL_SEQR7, bi->sr07);
- /* vga_wseq (fb_info->regs, CL_SEQR8, 0x00); *//* EEPROM control: shouldn't be necessary to write to this at all.. */
- vga_wseq (fb_info->regs, CL_SEQR10, 0x00); /* graphics cursor X position (incomplete; position gives rem. 3 bits */
- vga_wseq (fb_info->regs, CL_SEQR11, 0x00); /* graphics cursor Y position (..."... ) */
- vga_wseq (fb_info->regs, CL_SEQR12, 0x00); /* graphics cursor attributes */
- vga_wseq (fb_info->regs, CL_SEQR13, 0x00); /* graphics cursor pattern address */
- /* writing these on a P4 might give problems.. */
- if (fb_info->btype != BT_PICASSO4) {
- vga_wseq (fb_info->regs, CL_SEQR17, 0x00); /* configuration readback and ext. color */
- vga_wseq (fb_info->regs, CL_SEQR18, 0x02); /* signature generator */
- }
- /* MCLK select etc. */
- if (bi->init_sr1f)
- vga_wseq (fb_info->regs, CL_SEQR1F, bi->sr1f);
- vga_wcrt (fb_info->regs, VGA_CRTC_PRESET_ROW, 0x00); /* Screen A preset row scan: none */
- vga_wcrt (fb_info->regs, VGA_CRTC_CURSOR_START, 0x20); /* Text cursor start: disable text cursor */
- vga_wcrt (fb_info->regs, VGA_CRTC_CURSOR_END, 0x00); /* Text cursor end: - */
- vga_wcrt (fb_info->regs, VGA_CRTC_START_HI, 0x00); /* Screen start address high: 0 */
- vga_wcrt (fb_info->regs, VGA_CRTC_START_LO, 0x00); /* Screen start address low: 0 */
- vga_wcrt (fb_info->regs, VGA_CRTC_CURSOR_HI, 0x00); /* text cursor location high: 0 */
- vga_wcrt (fb_info->regs, VGA_CRTC_CURSOR_LO, 0x00); /* text cursor location low: 0 */
- vga_wcrt (fb_info->regs, VGA_CRTC_UNDERLINE, 0x00); /* Underline Row scanline: - */
- vga_wcrt (fb_info->regs, VGA_CRTC_MODE, 0xc3); /* mode control: timing enable, byte mode, no compat modes */
- vga_wcrt (fb_info->regs, VGA_CRTC_LINE_COMPARE, 0x00); /* Line Compare: not needed */
- /* ### add 0x40 for text modes with > 30 MHz pixclock */
- vga_wcrt (fb_info->regs, CL_CRT1B, 0x02); /* ext. display controls: ext.adr. wrap */
- vga_wgfx (fb_info->regs, VGA_GFX_SR_VALUE, 0x00); /* Set/Reset registes: - */
- vga_wgfx (fb_info->regs, VGA_GFX_SR_ENABLE, 0x00); /* Set/Reset enable: - */
- vga_wgfx (fb_info->regs, VGA_GFX_COMPARE_VALUE, 0x00); /* Color Compare: - */
- vga_wgfx (fb_info->regs, VGA_GFX_DATA_ROTATE, 0x00); /* Data Rotate: - */
- vga_wgfx (fb_info->regs, VGA_GFX_PLANE_READ, 0x00); /* Read Map Select: - */
- vga_wgfx (fb_info->regs, VGA_GFX_MODE, 0x00); /* Mode: conf. for 16/4/2 color mode, no odd/even, read/write mode 0 */
- vga_wgfx (fb_info->regs, VGA_GFX_MISC, 0x01); /* Miscellaneous: memory map base address, graphics mode */
- vga_wgfx (fb_info->regs, VGA_GFX_COMPARE_MASK, 0x0f); /* Color Don't care: involve all planes */
- vga_wgfx (fb_info->regs, VGA_GFX_BIT_MASK, 0xff); /* Bit Mask: no mask at all */
- if (fb_info->btype == BT_ALPINE)
- vga_wgfx (fb_info->regs, CL_GRB, 0x20); /* (5434 can't have bit 3 set for bitblt) */
- else
- vga_wgfx (fb_info->regs, CL_GRB, 0x28); /* Graphics controller mode extensions: finer granularity, 8byte data latches */
- vga_wgfx (fb_info->regs, CL_GRC, 0xff); /* Color Key compare: - */
- vga_wgfx (fb_info->regs, CL_GRD, 0x00); /* Color Key compare mask: - */
- vga_wgfx (fb_info->regs, CL_GRE, 0x00); /* Miscellaneous control: - */
- /* vga_wgfx (fb_info->regs, CL_GR10, 0x00); *//* Background color byte 1: - */
- /* vga_wgfx (fb_info->regs, CL_GR11, 0x00); */
- vga_wattr (fb_info->regs, VGA_ATC_PALETTE0, 0x00); /* Attribute Controller palette registers: "identity mapping" */
- vga_wattr (fb_info->regs, VGA_ATC_PALETTE1, 0x01);
- vga_wattr (fb_info->regs, VGA_ATC_PALETTE2, 0x02);
- vga_wattr (fb_info->regs, VGA_ATC_PALETTE3, 0x03);
- vga_wattr (fb_info->regs, VGA_ATC_PALETTE4, 0x04);
- vga_wattr (fb_info->regs, VGA_ATC_PALETTE5, 0x05);
- vga_wattr (fb_info->regs, VGA_ATC_PALETTE6, 0x06);
- vga_wattr (fb_info->regs, VGA_ATC_PALETTE7, 0x07);
- vga_wattr (fb_info->regs, VGA_ATC_PALETTE8, 0x08);
- vga_wattr (fb_info->regs, VGA_ATC_PALETTE9, 0x09);
- vga_wattr (fb_info->regs, VGA_ATC_PALETTEA, 0x0a);
- vga_wattr (fb_info->regs, VGA_ATC_PALETTEB, 0x0b);
- vga_wattr (fb_info->regs, VGA_ATC_PALETTEC, 0x0c);
- vga_wattr (fb_info->regs, VGA_ATC_PALETTED, 0x0d);
- vga_wattr (fb_info->regs, VGA_ATC_PALETTEE, 0x0e);
- vga_wattr (fb_info->regs, VGA_ATC_PALETTEF, 0x0f);
- vga_wattr (fb_info->regs, VGA_ATC_MODE, 0x01); /* Attribute Controller mode: graphics mode */
- vga_wattr (fb_info->regs, VGA_ATC_OVERSCAN, 0x00); /* Overscan color reg.: reg. 0 */
- vga_wattr (fb_info->regs, VGA_ATC_PLANE_ENABLE, 0x0f); /* Color Plane enable: Enable all 4 planes */
- /* ### vga_wattr (fb_info->regs, CL_AR33, 0x00); * Pixel Panning: - */
- vga_wattr (fb_info->regs, VGA_ATC_COLOR_PAGE, 0x00); /* Color Select: - */
- WGen (fb_info, VGA_PEL_MSK, 0xff); /* Pixel mask: no mask */
- if (fb_info->btype != BT_ALPINE && fb_info->btype != BT_GD5480)
- WGen (fb_info, VGA_MIS_W, 0xc3); /* polarity (-/-), enable display mem, VGA_CRTC_START_HI i/o base = color */
- vga_wgfx (fb_info->regs, CL_GR31, 0x04); /* BLT Start/status: Blitter reset */
- vga_wgfx (fb_info->regs, CL_GR31, 0x00); /* - " - : "end-of-reset" */
- /* CLUT setup */
- WClut (fb_info, 0, 0x00, 0x00, 0x00); /* background: black */
- WClut (fb_info, 1, 0x3f, 0x3f, 0x3f); /* foreground: white */
- WClut (fb_info, 2, 0x00, 0x20, 0x00);
- WClut (fb_info, 3, 0x00, 0x20, 0x20);
- WClut (fb_info, 4, 0x20, 0x00, 0x00);
- WClut (fb_info, 5, 0x20, 0x00, 0x20);
- WClut (fb_info, 6, 0x20, 0x10, 0x00);
- WClut (fb_info, 7, 0x20, 0x20, 0x20);
- WClut (fb_info, 8, 0x10, 0x10, 0x10);
- WClut (fb_info, 9, 0x10, 0x10, 0x30);
- WClut (fb_info, 10, 0x10, 0x30, 0x10);
- WClut (fb_info, 11, 0x10, 0x30, 0x30);
- WClut (fb_info, 12, 0x30, 0x10, 0x10);
- WClut (fb_info, 13, 0x30, 0x10, 0x30);
- WClut (fb_info, 14, 0x30, 0x30, 0x10);
- WClut (fb_info, 15, 0x30, 0x30, 0x30);
- /* the rest a grey ramp */
- {
- int i;
- for (i = 16; i < 256; i++)
- WClut (fb_info, i, i >> 2, i >> 2, i >> 2);
- }
- /* misc... */
- WHDR (fb_info, 0); /* Hidden DAC register: - */
- printk (KERN_INFO "clgen: This board has %ld bytes of DRAM memoryn", fb_info->size);
- DPRINTK ("EXITn");
- return;
- }
- static void switch_monitor (struct clgenfb_info *fb_info, int on)
- {
- #ifdef CONFIG_ZORRO /* only works on Zorro boards */
- static int IsOn = 0; /* XXX not ok for multiple boards */
- DPRINTK ("ENTERn");
- if (fb_info->btype == BT_PICASSO4)
- return; /* nothing to switch */
- if (fb_info->btype == BT_ALPINE)
- return; /* nothing to switch */
- if (fb_info->btype == BT_GD5480)
- return; /* nothing to switch */
- if (fb_info->btype == BT_PICASSO) {
- if ((on && !IsOn) || (!on && IsOn))
- WSFR (fb_info, 0xff);
- DPRINTK ("EXITn");
- return;
- }
- if (on) {
- switch (fb_info->btype) {
- case BT_SD64:
- WSFR (fb_info, fb_info->SFR | 0x21);
- break;
- case BT_PICCOLO:
- WSFR (fb_info, fb_info->SFR | 0x28);
- break;
- case BT_SPECTRUM:
- WSFR (fb_info, 0x6f);
- break;
- default: /* do nothing */ break;
- }
- } else {
- switch (fb_info->btype) {
- case BT_SD64:
- WSFR (fb_info, fb_info->SFR & 0xde);
- break;
- case BT_PICCOLO:
- WSFR (fb_info, fb_info->SFR & 0xd7);
- break;
- case BT_SPECTRUM:
- WSFR (fb_info, 0x4f);
- break;
- default: /* do nothing */ break;
- }
- }
- DPRINTK ("EXITn");
- #endif /* CONFIG_ZORRO */
- }
- static void clgen_set_disp (const void *par, struct display *disp,
- struct fb_info_gen *info)
- {
- struct clgenfb_par *_par = (struct clgenfb_par *) par;
- struct clgenfb_info *fb_info = (struct clgenfb_info *) info;
- int accel_text;
- DPRINTK ("ENTERn");
- assert (_par != NULL);
- assert (fb_info != NULL);
- accel_text = _par->var.accel_flags & FB_ACCELF_TEXT;
- printk ("Cirrus Logic video mode: ");
- disp->screen_base = (char *) fb_info->fbmem;
- switch (_par->var.bits_per_pixel) {
- #ifdef FBCON_HAS_MFB
- case 1:
- printk ("monochromen");
- if (fb_info->btype == BT_GD5480)
- disp->screen_base = (char *) fb_info->fbmem;
- disp->dispsw = &fbcon_mfb;
- break;
- #endif
- #ifdef FBCON_HAS_CFB8
- case 8:
- printk ("8 bit color depthn");
- if (fb_info->btype == BT_GD5480)
- disp->screen_base = (char *) fb_info->fbmem;
- if (accel_text)
- disp->dispsw = &fbcon_clgen_8;
- else
- disp->dispsw = &fbcon_cfb8;
- break;
- #endif
- #ifdef FBCON_HAS_CFB16
- case 16:
- printk ("16 bit color depthn");
- if (accel_text)
- disp->dispsw = &fbcon_clgen_16;
- else
- disp->dispsw = &fbcon_cfb16;
- if (fb_info->btype == BT_GD5480)
- disp->screen_base = (char *) fb_info->fbmem + 1 * MB_;
- disp->dispsw_data = fb_info->fbcon_cmap.cfb16;
- break;
- #endif
- #ifdef FBCON_HAS_CFB24
- case 24:
- printk ("24 bit color depthn");
- disp->dispsw = &fbcon_cfb24;
- if (fb_info->btype == BT_GD5480)
- disp->screen_base = (char *) fb_info->fbmem + 2 * MB_;
- disp->dispsw_data = fb_info->fbcon_cmap.cfb24;
- break;
- #endif
- #ifdef FBCON_HAS_CFB32
- case 32:
- printk ("32 bit color depthn");
- if (accel_text)
- disp->dispsw = &fbcon_clgen_32;
- else
- disp->dispsw = &fbcon_cfb32;
- if (fb_info->btype == BT_GD5480)
- disp->screen_base = (char *) fb_info->fbmem + 2 * MB_;
- disp->dispsw_data = fb_info->fbcon_cmap.cfb32;
- break;
- #endif
- default:
- printk ("unsupported color depthn");
- disp->dispsw = &fbcon_dummy;
- disp->dispsw_data = NULL;
- break;
- }
- DPRINTK ("EXITn");
- }
- #ifdef FBCON_HAS_CFB8
- static void fbcon_clgen8_bmove (struct display *p, int sy, int sx,
- int dy, int dx, int height, int width)
- {
- struct clgenfb_info *fb_info = (struct clgenfb_info *) p->fb_info;
- DPRINTK ("ENTERn");
- sx *= fontwidth (p);
- sy *= fontheight (p);
- dx *= fontwidth (p);
- dy *= fontheight (p);
- width *= fontwidth (p);
- height *= fontheight (p);
- clgen_BitBLT (fb_info->regs, (unsigned short) sx, (unsigned short) sy,
- (unsigned short) dx, (unsigned short) dy,
- (unsigned short) width, (unsigned short) height,
- fb_info->currentmode.line_length);
- DPRINTK ("EXITn");
- }
- static void fbcon_clgen8_clear (struct vc_data *conp, struct display *p,
- int sy, int sx, int height, int width)
- {
- struct clgenfb_info *fb_info = (struct clgenfb_info *) p->fb_info;
- unsigned short col;
- DPRINTK ("ENTERn");
- sx *= fontwidth (p);
- sy *= fontheight (p);
- width *= fontwidth (p);
- height *= fontheight (p);
- col = attr_bgcol_ec (p, conp);
- col &= 0xff;
- clgen_RectFill (fb_info, (unsigned short) sx, (unsigned short) sy,
- (unsigned short) width, (unsigned short) height,
- col, fb_info->currentmode.line_length);
- DPRINTK ("EXITn");
- }
- #endif
- #ifdef FBCON_HAS_CFB16
- static void fbcon_clgen16_bmove (struct display *p, int sy, int sx,
- int dy, int dx, int height, int width)
- {
- struct clgenfb_info *fb_info = (struct clgenfb_info *) p->fb_info;
- DPRINTK ("ENTERn");
- sx *= fontwidth (p) * 2; /* 2 bytes/pixel */
- sy *= fontheight (p);
- dx *= fontwidth (p) * 2; /* 2 bytes/pixel */
- dy *= fontheight (p);
- width *= fontwidth (p) * 2; /* 2 bytes/pixel */
- height *= fontheight (p);
- clgen_BitBLT (fb_info->regs, (unsigned short) sx, (unsigned short) sy,
- (unsigned short) dx, (unsigned short) dy,
- (unsigned short) width, (unsigned short) height,
- fb_info->currentmode.line_length);
- DPRINTK ("EXITn");
- }
- static void fbcon_clgen16_clear (struct vc_data *conp, struct display *p,
- int sy, int sx, int height, int width)
- {
- struct clgenfb_info *fb_info = (struct clgenfb_info *) p->fb_info;
- unsigned short col;
- DPRINTK ("ENTERn");
- sx *= fontwidth (p) * 2; /* 2 bytes/pixel */
- sy *= fontheight (p);
- width *= fontwidth (p) * 2; /* 2 bytes/pixel? */
- height *= fontheight (p);
- col = attr_bgcol_ec (p, conp);
- col &= 0xff;
- clgen_RectFill (fb_info, (unsigned short) sx, (unsigned short) sy,
- (unsigned short) width, (unsigned short) height,
- col, fb_info->currentmode.line_length);
- DPRINTK ("EXITn");
- }
- #endif
- #ifdef FBCON_HAS_CFB32
- static void fbcon_clgen32_bmove (struct display *p, int sy, int sx,
- int dy, int dx, int height, int width)
- {
- struct clgenfb_info *fb_info = (struct clgenfb_info *) p->fb_info;
- DPRINTK ("ENTERn");
- sx *= fontwidth (p) * 4; /* 4 bytes/pixel */
- sy *= fontheight (p);
- dx *= fontwidth (p) * 4; /* 4 bytes/pixel */
- dy *= fontheight (p);
- width *= fontwidth (p) * 4; /* 4 bytes/pixel */
- height *= fontheight (p);
- clgen_BitBLT (fb_info->regs, (unsigned short) sx, (unsigned short) sy,
- (unsigned short) dx, (unsigned short) dy,
- (unsigned short) width, (unsigned short) height,
- fb_info->currentmode.line_length);
- DPRINTK ("EXITn");
- }
- static void fbcon_clgen32_clear (struct vc_data *conp, struct display *p,
- int sy, int sx, int height, int width)
- {
- struct clgenfb_info *fb_info = (struct clgenfb_info *) p->fb_info;
- unsigned short col;
- DPRINTK ("ENTERn");
- sx *= fontwidth (p) * 4; /* 4 bytes/pixel */
- sy *= fontheight (p);
- width *= fontwidth (p) * 4; /* 4 bytes/pixel? */
- height *= fontheight (p);
- col = attr_bgcol_ec (p, conp);
- col &= 0xff;
- clgen_RectFill (fb_info, (unsigned short) sx, (unsigned short) sy,
- (unsigned short) width, (unsigned short) height,
- col, fb_info->currentmode.line_length);
- DPRINTK ("EXITn");
- }
- #endif /* FBCON_HAS_CFB32 */
- #ifdef CONFIG_ALL_PPC
- #define PREP_VIDEO_BASE ((volatile unsigned long) 0xC0000000)
- #define PREP_IO_BASE ((volatile unsigned char *) 0x80000000)
- static void __init get_prep_addrs (unsigned long *display, unsigned long *registers)
- {
- DPRINTK ("ENTERn");
- *display = PREP_VIDEO_BASE;
- *registers = (unsigned long) PREP_IO_BASE;
- DPRINTK ("EXITn");
- }
- #endif /* CONFIG_ALL_PPC */
- #ifdef CONFIG_PCI
- static int release_io_ports = 0;
- /* Pulled the logic from XFree86 Cirrus driver to get the memory size,
- * based on the DRAM bandwidth bit and DRAM bank switching bit. This
- * works with 1MB, 2MB and 4MB configurations (which the Motorola boards
- * seem to have. */
- static unsigned int __init clgen_get_memsize (caddr_t regbase)
- {
- unsigned long mem;
- unsigned char SRF;
- DPRINTK ("ENTERn");
- SRF = vga_rseq (regbase, CL_SEQRF);
- switch ((SRF & 0x18)) {
- case 0x08: mem = 512 * 1024; break;
- case 0x10: mem = 1024 * 1024; break;
- /* 64-bit DRAM data bus width; assume 2MB. Also indicates 2MB memory
- * on the 5430. */
- case 0x18: mem = 2048 * 1024; break;
- default: printk ("CLgenfb: Unknown memory size!n");
- mem = 1024 * 1024;
- }
- if (SRF & 0x80) {
- /* If DRAM bank switching is enabled, there must be twice as much
- * memory installed. (4MB on the 5434) */
- mem *= 2;
- }
- /* TODO: Handling of GD5446/5480 (see XF86 sources ...) */
- return mem;
- DPRINTK ("EXITn");
- }
- static struct pci_dev * __init clgen_pci_dev_get (clgen_board_t *btype)
- {
- struct pci_dev *pdev;
- int i;
- DPRINTK ("ENTERn");
- for (i = 0; i < ARRAY_SIZE(clgen_pci_probe_list); i++) {
- pdev = NULL;
- while ((pdev = pci_find_device (PCI_VENDOR_ID_CIRRUS,
- clgen_pci_probe_list[i].device, pdev)) != NULL) {
- if (pci_enable_device(pdev) == 0) {
- *btype = clgen_pci_probe_list[i].btype;
- DPRINTK ("EXIT, returning pdev=%pn", pdev);
- return pdev;
- }
- }
- }
- DPRINTK ("EXIT, returning NULLn");
- return NULL;
- }
- static void __init get_pci_addrs (const struct pci_dev *pdev,
- unsigned long *display, unsigned long *registers)
- {
- assert (pdev != NULL);
- assert (display != NULL);
- assert (registers != NULL);
- DPRINTK ("ENTERn");
- *display = 0;
- *registers = 0;
- /* This is a best-guess for now */
- if (pci_resource_flags(pdev, 0) & IORESOURCE_IO) {
- *display = pci_resource_start(pdev, 1);
- *registers = pci_resource_start(pdev, 0);
- } else {
- *display = pci_resource_start(pdev, 0);
- *registers = pci_resource_start(pdev, 1);
- }
- assert (*display != 0);
- DPRINTK ("EXITn");
- }
- static void __exit clgen_pci_unmap (struct clgenfb_info *info)
- {
- iounmap (info->fbmem);
- release_mem_region(info->fbmem_phys, info->size);
- #if 0 /* if system didn't claim this region, we would... */
- release_mem_region(0xA0000, 65535);
- #endif
- if (release_io_ports)
- release_region(0x3C0, 32);
- }
- static int __init clgen_pci_setup (struct clgenfb_info *info,
- clgen_board_t *btype)
- {
- struct pci_dev *pdev;
- unsigned long board_addr, board_size;
- DPRINTK ("ENTERn");
- pdev = clgen_pci_dev_get (btype);
- if (!pdev) {
- printk (KERN_ERR " Couldn't find PCI devicen");
- DPRINTK ("EXIT, returning 1n");
- return 1;
- }
- DPRINTK (" Found PCI device, base address 0 is 0x%lx, btype set to %dn",
- pdev->resource[0].start, *btype);
- DPRINTK (" base address 1 is 0x%lxn", pdev->resource[1].start);
- info->pdev = pdev;
- if(isPReP) {
- /* Xbh does this, though 0 seems to be the init value */
- pcibios_write_config_dword (0, pdev->devfn, PCI_BASE_ADDRESS_0,
- 0x00000000);
- #ifdef CONFIG_ALL_PPC
- get_prep_addrs (&board_addr, &info->fbregs_phys);
- #endif
- } else {
- DPRINTK ("Attempt to get PCI info for Cirrus Graphics Cardn");
- get_pci_addrs (pdev, &board_addr, &info->fbregs_phys);
- }
- DPRINTK ("Board address: 0x%lx, register address: 0x%lxn", board_addr, info->fbregs_phys);
- if(isPReP) {
- /* PReP dies if we ioremap the IO registers, but it works w/out... */
- info->regs = (char *) info->fbregs_phys;
- } else
- info->regs = 0; /* FIXME: this forces VGA. alternatives? */
- if (*btype == BT_GD5480) {
- board_size = 32 * MB_;
- } else {
- board_size = clgen_get_memsize (info->regs);
- }
- if (!request_mem_region(board_addr, board_size, "clgenfb")) {
- printk(KERN_ERR "clgen: cannot reserve region 0x%lx, abortn",
- board_addr);
- return -1;
- }
- #if 0 /* if the system didn't claim this region, we would... */
- if (!request_mem_region(0xA0000, 65535, "clgenfb")) {
- printk(KERN_ERR "clgen: cannot reserve region 0x%lx, abortn",
- 0xA0000L);
- release_mem_region(board_addr, board_size);
- return -1;
- }
- #endif
- if (request_region(0x3C0, 32, "clgenfb"))
- release_io_ports = 1;
- info->fbmem = ioremap (board_addr, board_size);
- info->fbmem_phys = board_addr;
- info->size = board_size;
- printk (" RAM (%lu kB) at 0x%lx, ", info->size / KB_, board_addr);
- printk ("Cirrus Logic chipset on PCI busn");
- DPRINTK ("EXIT, returning 0n");
- return 0;
- }
- #endif /* CONFIG_PCI */
- #ifdef CONFIG_ZORRO
- static int __init clgen_zorro_find (struct zorro_dev **z_o,
- struct zorro_dev **z2_o,
- clgen_board_t *btype, unsigned long *size)
- {
- struct zorro_dev *z = NULL;
- int i;
- assert (z_o != NULL);
- assert (btype != NULL);
- for (i = 0; i < ARRAY_SIZE(clgen_zorro_probe_list); i++)
- if ((z = zorro_find_device(clgen_zorro_probe_list[i].id, NULL)))
- break;
- if (z) {
- *z_o = z;
- if (clgen_zorro_probe_list[i].id2)
- *z2_o = zorro_find_device(clgen_zorro_probe_list[i].id2, NULL);
- else
- *z2_o = NULL;
- *btype = clgen_zorro_probe_list[i].btype;
- *size = clgen_zorro_probe_list[i].size;
- printk (KERN_INFO "clgen: %s board detected; ",
- clgen_board_info[*btype].name);
- return 0;
- }
- printk (KERN_NOTICE "clgen: no supported board found.n");
- return -1;
- }
- static void __exit clgen_zorro_unmap (struct clgenfb_info *info)
- {
- release_mem_region(info->board_addr, info->board_size);
- if (info->btype == BT_PICASSO4) {
- iounmap ((void *)info->board_addr);
- iounmap ((void *)info->fbmem_phys);
- } else {
- if (info->board_addr > 0x01000000)
- iounmap ((void *)info->board_addr);
- }
- }
- static int __init clgen_zorro_setup (struct clgenfb_info *info,
- clgen_board_t *btype)
- {
- struct zorro_dev *z = NULL, *z2 = NULL;
- unsigned long board_addr, board_size, size;
- assert (info != NULL);
- assert (btype != NULL);
- if (clgen_zorro_find (&z, &z2, btype, &size))
- return -1;
- assert (z > 0);
- assert (z2 >= 0);
- assert (*btype != BT_NONE);
- info->board_addr = board_addr = z->resource.start;
- info->board_size = board_size = z->resource.end-z->resource.start+1;
- info->size = size;
- if (!request_mem_region(board_addr, board_size, "clgenfb")) {
- printk(KERN_ERR "clgen: cannot reserve region 0x%lx, abortn",
- board_addr);
- return -1;
- }
- printk (" RAM (%lu MB) at $%lx, ", board_size / MB_, board_addr);
- if (*btype == BT_PICASSO4) {
- printk (" REG at $%lxn", board_addr + 0x600000);
- /* To be precise, for the P4 this is not the */
- /* begin of the board, but the begin of RAM. */
- /* for P4, map in its address space in 2 chunks (### TEST! ) */
- /* (note the ugly hardcoded 16M number) */
- info->regs = ioremap (board_addr, 16777216);
- DPRINTK ("clgen: Virtual address for board set to: $%pn", info->regs);
- info->regs += 0x600000;
- info->fbregs_phys = board_addr + 0x600000;
- info->fbmem_phys = board_addr + 16777216;
- info->fbmem = ioremap (info->fbmem_phys, 16777216);
- } else {
- printk (" REG at $%lxn", (unsigned long) z2->resource.start);
- info->fbmem_phys = board_addr;
- if (board_addr > 0x01000000)
- info->fbmem = ioremap (board_addr, board_size);
- else
- info->fbmem = (caddr_t) ZTWO_VADDR (board_addr);
- /* set address for REG area of board */
- info->regs = (caddr_t) ZTWO_VADDR (z2->resource.start);
- info->fbregs_phys = z2->resource.start;
- DPRINTK ("clgen: Virtual address for board set to: $%pn", info->regs);
- }
- printk (KERN_INFO "Cirrus Logic chipset on Zorro busn");
- return 0;
- }
- #endif /* CONFIG_ZORRO */
- /********************************************************************/
- /* clgenfb_init() - master initialization function */
- /********************************************************************/
- int __init clgenfb_init(void)
- {
- int err, j, k;
- clgen_board_t btype = BT_NONE;
- struct clgenfb_info *fb_info = NULL;
- DPRINTK ("ENTERn");
- printk (KERN_INFO "clgen: Driver for Cirrus Logic based graphic boards, v" CLGEN_VERSION "n");
- fb_info = &boards[0]; /* FIXME support multiple boards ... */
- #ifdef CONFIG_PCI
- if (clgen_pci_setup (fb_info, &btype)) { /* Also does OF setup */
- DPRINTK ("EXIT, returning -ENXIOn");
- return -ENXIO;
- }
- #elif defined(CONFIG_ZORRO)
- /* FIXME: CONFIG_PCI and CONFIG_ZORRO may both be defined */
- if (clgen_zorro_setup (fb_info, &btype)) {
- DPRINTK ("EXIT, returning -ENXIOn");
- return -ENXIO;
- }
- #else
- #error This driver requires Zorro or PCI bus.
- #endif /* !CONFIG_PCI, !CONFIG_ZORRO */
- /* sanity checks */
- assert (btype != BT_NONE);
- assert (btype == clgen_board_info[btype].btype);
- fb_info->btype = btype;
- DPRINTK ("clgen: (RAM start set to: 0x%p)n", fb_info->fbmem);
- if (noaccel)
- {
- printk("clgen: disabling text acceleration supportn");
- #ifdef FBCON_HAS_CFB8
- fbcon_clgen_8.bmove = fbcon_cfb8_bmove;
- fbcon_clgen_8.clear = fbcon_cfb8_clear;
- #endif
- #ifdef FBCON_HAS_CFB16
- fbcon_clgen_16.bmove = fbcon_cfb16_bmove;
- fbcon_clgen_16.clear = fbcon_cfb16_clear;
- #endif
- #ifdef FBCON_HAS_CFB32
- fbcon_clgen_32.bmove = fbcon_cfb32_bmove;
- fbcon_clgen_32.clear = fbcon_cfb32_clear;
- #endif
- }
- init_vgachip (fb_info);
- /* set up a few more things, register framebuffer driver etc */
- fb_info->gen.parsize = sizeof (struct clgenfb_par);
- fb_info->gen.fbhw = &clgen_hwswitch;
- strncpy (fb_info->gen.info.modename, clgen_board_info[btype].name,
- sizeof (fb_info->gen.info.modename));
- fb_info->gen.info.modename [sizeof (fb_info->gen.info.modename) - 1] = 0;
- fb_info->gen.info.node = -1;
- fb_info->gen.info.fbops = &clgenfb_ops;
- fb_info->gen.info.disp = &disp;
- fb_info->gen.info.changevar = NULL;
- fb_info->gen.info.switch_con = &fbgen_switch;
- fb_info->gen.info.updatevar = &fbgen_update_var;
- fb_info->gen.info.blank = &fbgen_blank;
- fb_info->gen.info.flags = FBINFO_FLAG_DEFAULT;
- for (j = 0; j < 256; j++) {
- if (j < 16) {
- k = color_table[j];
- fb_info->palette[j].red = default_red[k];
- fb_info->palette[j].green = default_grn[k];
- fb_info->palette[j].blue = default_blu[k];
- } else {
- fb_info->palette[j].red =
- fb_info->palette[j].green =
- fb_info->palette[j].blue = j;
- }
- }
- /* now that we know the board has been registered n' stuff, we */
- /* can finally initialize it to a default mode */
- clgenfb_default = clgenfb_predefined[clgen_def_mode].var;
- clgenfb_default.activate = FB_ACTIVATE_NOW;
- clgenfb_default.yres_virtual = 480 * 3; /* for fast scrolling (YPAN-Mode) */
- err = fbgen_do_set_var (&clgenfb_default, 1, &fb_info->gen);
- if (err) {
- DPRINTK ("EXIT, returning -EINVALn");
- return -EINVAL;
- }
- disp.var = clgenfb_default;
- fbgen_set_disp (-1, &fb_info->gen);
- fbgen_install_cmap (0, &fb_info->gen);
- err = register_framebuffer (&fb_info->gen.info);
- if (err) {
- printk (KERN_ERR "clgen: ERROR - could not register fb device; err = %d!n", err);
- DPRINTK ("EXIT, returning -EINVALn");
- return -EINVAL;
- }
- DPRINTK ("EXIT, returning 0n");
- return 0;
- }
- /*
- * Cleanup (only needed for module)
- */
- static void __exit clgenfb_cleanup (struct clgenfb_info *info)
- {
- DPRINTK ("ENTERn");
- #ifdef CONFIG_ZORRO
- switch_monitor (info, 0);
- clgen_zorro_unmap (info);
- #else
- clgen_pci_unmap (info);
- #endif /* CONFIG_ZORRO */
- unregister_framebuffer ((struct fb_info *) info);
- printk ("Framebuffer unregisteredn");
- DPRINTK ("EXITn");
- }
- #ifndef MODULE
- int __init clgenfb_setup(char *options) {
- char *this_opt, s[32];
- int i;
- DPRINTK ("ENTERn");
- if (!options || !*options)
- return 0;
- for (this_opt = strtok (options, ","); this_opt != NULL;
- this_opt = strtok (NULL, ",")) {
- if (!*this_opt) continue;
- DPRINTK("clgenfb_setup: option '%s'n", this_opt);
- for (i = 0; i < NUM_TOTAL_MODES; i++) {
- sprintf (s, "mode:%s", clgenfb_predefined[i].name);
- if (strcmp (this_opt, s) == 0)
- clgen_def_mode = i;
- }
- if (!strcmp(this_opt, "noaccel"))
- noaccel = 1;
- }
- return 0;
- }
- #endif
- /*
- * Modularization
- */
- MODULE_AUTHOR("Copyright 1999,2000 Jeff Garzik <jgarzik@mandrakesoft.com>");
- MODULE_DESCRIPTION("Accelerated FBDev driver for Cirrus Logic chips");
- MODULE_LICENSE("GPL");
- static void __exit clgenfb_exit (void)
- {
- DPRINTK ("ENTERn");
- clgenfb_cleanup (&boards[0]); /* FIXME: support multiple boards */
- DPRINTK ("EXITn");
- }
- #ifdef MODULE
- module_init(clgenfb_init);
- #endif
- module_exit(clgenfb_exit);
- /**********************************************************************/
- /* about the following functions - I have used the same names for the */
- /* functions as Markus Wild did in his Retina driver for NetBSD as */
- /* they just made sense for this purpose. Apart from that, I wrote */
- /* these functions myself. */
- /**********************************************************************/
- /*** WGen() - write into one of the external/general registers ***/
- static void WGen (const struct clgenfb_info *fb_info,
- int regnum, unsigned char val)
- {
- unsigned long regofs = 0;
- if (fb_info->btype == BT_PICASSO) {
- /* Picasso II specific hack */
- /* if (regnum == VGA_PEL_IR || regnum == VGA_PEL_D || regnum == CL_VSSM2) */
- if (regnum == VGA_PEL_IR || regnum == VGA_PEL_D)
- regofs = 0xfff;
- }
- vga_w (fb_info->regs, regofs + regnum, val);
- }
- /*** RGen() - read out one of the external/general registers ***/
- static unsigned char RGen (const struct clgenfb_info *fb_info, int regnum)
- {
- unsigned long regofs = 0;
- if (fb_info->btype == BT_PICASSO) {
- /* Picasso II specific hack */
- /* if (regnum == VGA_PEL_IR || regnum == VGA_PEL_D || regnum == CL_VSSM2) */
- if (regnum == VGA_PEL_IR || regnum == VGA_PEL_D)
- regofs = 0xfff;
- }
- return vga_r (fb_info->regs, regofs + regnum);
- }
- /*** AttrOn() - turn on VideoEnable for Attribute controller ***/
- static void AttrOn (const struct clgenfb_info *fb_info)
- {
- assert (fb_info != NULL);
- DPRINTK ("ENTERn");
- if (vga_rcrt (fb_info->regs, CL_CRT24) & 0x80) {
- /* if we're just in "write value" mode, write back the */
- /* same value as before to not modify anything */
- vga_w (fb_info->regs, VGA_ATT_IW,
- vga_r (fb_info->regs, VGA_ATT_R));
- }
- /* turn on video bit */
- /* vga_w (fb_info->regs, VGA_ATT_IW, 0x20); */
- vga_w (fb_info->regs, VGA_ATT_IW, 0x33);
- /* dummy write on Reg0 to be on "write index" mode next time */
- vga_w (fb_info->regs, VGA_ATT_IW, 0x00);
- DPRINTK ("EXITn");
- }
- /*** WHDR() - write into the Hidden DAC register ***/
- /* as the HDR is the only extension register that requires special treatment
- * (the other extension registers are accessible just like the "ordinary"
- * registers of their functional group) here is a specialized routine for
- * accessing the HDR
- */
- static void WHDR (const struct clgenfb_info *fb_info, unsigned char val)
- {
- unsigned char dummy;
- if (fb_info->btype == BT_PICASSO) {
- /* Klaus' hint for correct access to HDR on some boards */
- /* first write 0 to pixel mask (3c6) */
- WGen (fb_info, VGA_PEL_MSK, 0x00);
- udelay (200);
- /* next read dummy from pixel address (3c8) */
- dummy = RGen (fb_info, VGA_PEL_IW);
- udelay (200);
- }
- /* now do the usual stuff to access the HDR */
- dummy = RGen (fb_info, VGA_PEL_MSK);
- udelay (200);
- dummy = RGen (fb_info, VGA_PEL_MSK);
- udelay (200);
- dummy = RGen (fb_info, VGA_PEL_MSK);
- udelay (200);
- dummy = RGen (fb_info, VGA_PEL_MSK);
- udelay (200);
- WGen (fb_info, VGA_PEL_MSK, val);
- udelay (200);
- if (fb_info->btype == BT_PICASSO) {
- /* now first reset HDR access counter */
- dummy = RGen (fb_info, VGA_PEL_IW);
- udelay (200);
- /* and at the end, restore the mask value */
- /* ## is this mask always 0xff? */
- WGen (fb_info, VGA_PEL_MSK, 0xff);
- udelay (200);
- }
- }
- /*** WSFR() - write to the "special function register" (SFR) ***/
- static void WSFR (struct clgenfb_info *fb_info, unsigned char val)
- {
- #ifdef CONFIG_ZORRO
- assert (fb_info->regs != NULL);
- fb_info->SFR = val;
- z_writeb (val, fb_info->regs + 0x8000);
- #endif
- }
- /* The Picasso has a second register for switching the monitor bit */
- static void WSFR2 (struct clgenfb_info *fb_info, unsigned char val)
- {
- #ifdef CONFIG_ZORRO
- /* writing an arbitrary value to this one causes the monitor switcher */
- /* to flip to Amiga display */
- assert (fb_info->regs != NULL);
- fb_info->SFR = val;
- z_writeb (val, fb_info->regs + 0x9000);
- #endif
- }
- /*** WClut - set CLUT entry (range: 0..63) ***/
- static void WClut (struct clgenfb_info *fb_info, unsigned char regnum, unsigned char red,
- unsigned char green, unsigned char blue)
- {
- unsigned int data = VGA_PEL_D;
- /* address write mode register is not translated.. */
- vga_w (fb_info->regs, VGA_PEL_IW, regnum);
- if (fb_info->btype == BT_PICASSO || fb_info->btype == BT_PICASSO4 ||
- fb_info->btype == BT_ALPINE || fb_info->btype == BT_GD5480) {
- /* but DAC data register IS, at least for Picasso II */
- if (fb_info->btype == BT_PICASSO)
- data += 0xfff;
- vga_w (fb_info->regs, data, red);
- vga_w (fb_info->regs, data, green);
- vga_w (fb_info->regs, data, blue);
- } else {
- vga_w (fb_info->regs, data, blue);
- vga_w (fb_info->regs, data, green);
- vga_w (fb_info->regs, data, red);
- }
- }
- #if 0
- /*** RClut - read CLUT entry (range 0..63) ***/
- static void RClut (struct clgenfb_info *fb_info, unsigned char regnum, unsigned char *red,
- unsigned char *green, unsigned char *blue)
- {
- unsigned int data = VGA_PEL_D;
- vga_w (fb_info->regs, VGA_PEL_IR, regnum);
- if (fb_info->btype == BT_PICASSO || fb_info->btype == BT_PICASSO4 ||
- fb_info->btype == BT_ALPINE || fb_info->btype == BT_GD5480) {
- if (fb_info->btype == BT_PICASSO)
- data += 0xfff;
- *red = vga_r (fb_info->regs, data);
- *green = vga_r (fb_info->regs, data);
- *blue = vga_r (fb_info->regs, data);
- } else {
- *blue = vga_r (fb_info->regs, data);
- *green = vga_r (fb_info->regs, data);
- *red = vga_r (fb_info->regs, data);
- }
- }
- #endif
- /*******************************************************************
- clgen_WaitBLT()
- Wait for the BitBLT engine to complete a possible earlier job
- *********************************************************************/
- /* FIXME: use interrupts instead */
- static inline void clgen_WaitBLT (caddr_t regbase)
- {
- /* now busy-wait until we're done */
- while (vga_rgfx (regbase, CL_GR31) & 0x08)
- /* do nothing */ ;
- }
- /*******************************************************************
- clgen_BitBLT()
- perform accelerated "scrolling"
- ********************************************************************/
- static void clgen_BitBLT (caddr_t regbase, u_short curx, u_short cury, u_short destx, u_short desty,
- u_short width, u_short height, u_short line_length)
- {
- u_short nwidth, nheight;
- u_long nsrc, ndest;
- u_char bltmode;
- DPRINTK ("ENTERn");
- nwidth = width - 1;
- nheight = height - 1;
- bltmode = 0x00;
- /* if source adr < dest addr, do the Blt backwards */
- if (cury <= desty) {
- if (cury == desty) {
- /* if src and dest are on the same line, check x */
- if (curx < destx)
- bltmode |= 0x01;
- } else
- bltmode |= 0x01;
- }
- if (!bltmode) {
- /* standard case: forward blitting */
- nsrc = (cury * line_length) + curx;
- ndest = (desty * line_length) + destx;
- } else {
- /* this means start addresses are at the end, counting backwards */
- nsrc = cury * line_length + curx + nheight * line_length + nwidth;
- ndest = desty * line_length + destx + nheight * line_length + nwidth;
- }
- clgen_WaitBLT(regbase);
- /*
- run-down of registers to be programmed:
- destination pitch
- source pitch
- BLT width/height
- source start
- destination start
- BLT mode
- BLT ROP
- VGA_GFX_SR_VALUE / VGA_GFX_SR_ENABLE: "fill color"
- start/stop
- */
- /* pitch: set to line_length */
- vga_wgfx (regbase, CL_GR24, line_length & 0xff); /* dest pitch low */
- vga_wgfx (regbase, CL_GR25, (line_length >> 8)); /* dest pitch hi */
- vga_wgfx (regbase, CL_GR26, line_length & 0xff); /* source pitch low */
- vga_wgfx (regbase, CL_GR27, (line_length >> 8)); /* source pitch hi */
- /* BLT width: actual number of pixels - 1 */
- vga_wgfx (regbase, CL_GR20, nwidth & 0xff); /* BLT width low */
- vga_wgfx (regbase, CL_GR21, (nwidth >> 8)); /* BLT width hi */
- /* BLT height: actual number of lines -1 */
- vga_wgfx (regbase, CL_GR22, nheight & 0xff); /* BLT height low */
- vga_wgfx (regbase, CL_GR23, (nheight >> 8)); /* BLT width hi */
- /* BLT destination */
- vga_wgfx (regbase, CL_GR28, (u_char) (ndest & 0xff)); /* BLT dest low */
- vga_wgfx (regbase, CL_GR29, (u_char) (ndest >> 8)); /* BLT dest mid */
- vga_wgfx (regbase, CL_GR2A, (u_char) (ndest >> 16)); /* BLT dest hi */
- /* BLT source */
- vga_wgfx (regbase, CL_GR2C, (u_char) (nsrc & 0xff)); /* BLT src low */
- vga_wgfx (regbase, CL_GR2D, (u_char) (nsrc >> 8)); /* BLT src mid */
- vga_wgfx (regbase, CL_GR2E, (u_char) (nsrc >> 16)); /* BLT src hi */
- /* BLT mode */
- vga_wgfx (regbase, CL_GR30, bltmode); /* BLT mode */
- /* BLT ROP: SrcCopy */
- vga_wgfx (regbase, CL_GR32, 0x0d); /* BLT ROP */
- /* and finally: GO! */
- vga_wgfx (regbase, CL_GR31, 0x02); /* BLT Start/status */
- DPRINTK ("EXITn");
- }
- /*******************************************************************
- clgen_RectFill()
- perform accelerated rectangle fill
- ********************************************************************/
- static void clgen_RectFill (struct clgenfb_info *fb_info,
- u_short x, u_short y, u_short width, u_short height,
- u_char color, u_short line_length)
- {
- u_short nwidth, nheight;
- u_long ndest;
- u_char op;
- DPRINTK ("ENTERn");
- nwidth = width - 1;
- nheight = height - 1;
- ndest = (y * line_length) + x;
- clgen_WaitBLT(fb_info->regs);
- /* pitch: set to line_length */
- vga_wgfx (fb_info->regs, CL_GR24, line_length & 0xff); /* dest pitch low */
- vga_wgfx (fb_info->regs, CL_GR25, (line_length >> 8)); /* dest pitch hi */
- vga_wgfx (fb_info->regs, CL_GR26, line_length & 0xff); /* source pitch low */
- vga_wgfx (fb_info->regs, CL_GR27, (line_length >> 8)); /* source pitch hi */
- /* BLT width: actual number of pixels - 1 */
- vga_wgfx (fb_info->regs, CL_GR20, nwidth & 0xff); /* BLT width low */
- vga_wgfx (fb_info->regs, CL_GR21, (nwidth >> 8)); /* BLT width hi */
- /* BLT height: actual number of lines -1 */
- vga_wgfx (fb_info->regs, CL_GR22, nheight & 0xff); /* BLT height low */
- vga_wgfx (fb_info->regs, CL_GR23, (nheight >> 8)); /* BLT width hi */
- /* BLT destination */
- vga_wgfx (fb_info->regs, CL_GR28, (u_char) (ndest & 0xff)); /* BLT dest low */
- vga_wgfx (fb_info->regs, CL_GR29, (u_char) (ndest >> 8)); /* BLT dest mid */
- vga_wgfx (fb_info->regs, CL_GR2A, (u_char) (ndest >> 16)); /* BLT dest hi */
- /* BLT source: set to 0 (is a dummy here anyway) */
- vga_wgfx (fb_info->regs, CL_GR2C, 0x00); /* BLT src low */
- vga_wgfx (fb_info->regs, CL_GR2D, 0x00); /* BLT src mid */
- vga_wgfx (fb_info->regs, CL_GR2E, 0x00); /* BLT src hi */
- /* This is a ColorExpand Blt, using the */
- /* same color for foreground and background */
- vga_wgfx (fb_info->regs, VGA_GFX_SR_VALUE, color); /* foreground color */
- vga_wgfx (fb_info->regs, VGA_GFX_SR_ENABLE, color); /* background color */
- op = 0xc0;
- if (fb_info->currentmode.var.bits_per_pixel == 16) {
- vga_wgfx (fb_info->regs, CL_GR10, color); /* foreground color */
- vga_wgfx (fb_info->regs, CL_GR11, color); /* background color */
- op = 0x50;
- op = 0xd0;
- } else if (fb_info->currentmode.var.bits_per_pixel == 32) {
- vga_wgfx (fb_info->regs, CL_GR10, color); /* foreground color */
- vga_wgfx (fb_info->regs, CL_GR11, color); /* background color */
- vga_wgfx (fb_info->regs, CL_GR12, color); /* foreground color */
- vga_wgfx (fb_info->regs, CL_GR13, color); /* background color */
- vga_wgfx (fb_info->regs, CL_GR14, 0); /* foreground color */
- vga_wgfx (fb_info->regs, CL_GR15, 0); /* background color */
- op = 0x50;
- op = 0xf0;
- }
- /* BLT mode: color expand, Enable 8x8 copy (faster?) */
- vga_wgfx (fb_info->regs, CL_GR30, op); /* BLT mode */
- /* BLT ROP: SrcCopy */
- vga_wgfx (fb_info->regs, CL_GR32, 0x0d); /* BLT ROP */
- /* and finally: GO! */
- vga_wgfx (fb_info->regs, CL_GR31, 0x02); /* BLT Start/status */
- DPRINTK ("EXITn");
- }
- /**************************************************************************
- * bestclock() - determine closest possible clock lower(?) than the
- * desired pixel clock
- **************************************************************************/
- static void bestclock (long freq, long *best, long *nom,
- long *den, long *div, long maxfreq)
- {
- long n, h, d, f;
- assert (best != NULL);
- assert (nom != NULL);
- assert (den != NULL);
- assert (div != NULL);
- assert (maxfreq > 0);
- *nom = 0;
- *den = 0;
- *div = 0;
- DPRINTK ("ENTERn");
- if (freq < 8000)
- freq = 8000;
- if (freq > maxfreq)
- freq = maxfreq;
- *best = 0;
- f = freq * 10;
- for (n = 32; n < 128; n++) {
- d = (143181 * n) / f;
- if ((d >= 7) && (d <= 63)) {
- if (d > 31)
- d = (d / 2) * 2;
- h = (14318 * n) / d;
- if (abs (h - freq) < abs (*best - freq)) {
- *best = h;
- *nom = n;
- if (d < 32) {
- *den = d;
- *div = 0;
- } else {
- *den = d / 2;
- *div = 1;
- }
- }
- }
- d = ((143181 * n) + f - 1) / f;
- if ((d >= 7) && (d <= 63)) {
- if (d > 31)
- d = (d / 2) * 2;
- h = (14318 * n) / d;
- if (abs (h - freq) < abs (*best - freq)) {
- *best = h;
- *nom = n;
- if (d < 32) {
- *den = d;
- *div = 0;
- } else {
- *den = d / 2;
- *div = 1;
- }
- }
- }
- }
- DPRINTK ("Best possible values for given frequency:n");
- DPRINTK (" best: %ld kHz nom: %ld den: %ld div: %ldn",
- freq, *nom, *den, *div);
- DPRINTK ("EXITn");
- }
- /* -------------------------------------------------------------------------
- *
- * debugging functions
- *
- * -------------------------------------------------------------------------
- */
- #ifdef CLGEN_DEBUG
- /**
- * clgen_dbg_print_byte
- * @name: name associated with byte value to be displayed
- * @val: byte value to be displayed
- *
- * DESCRIPTION:
- * Display an indented string, along with a hexidecimal byte value, and
- * its decoded bits. Bits 7 through 0 are listed in left-to-right
- * order.
- */
- static
- void clgen_dbg_print_byte (const char *name, unsigned char val)
- {
- DPRINTK ("%8s = 0x%02X (bits 7-0: %c%c%c%c%c%c%c%c)n",
- name, val,
- val & 0x80 ? '1' : '0',
- val & 0x40 ? '1' : '0',
- val & 0x20 ? '1' : '0',
- val & 0x10 ? '1' : '0',
- val & 0x08 ? '1' : '0',
- val & 0x04 ? '1' : '0',
- val & 0x02 ? '1' : '0',
- val & 0x01 ? '1' : '0');
- }
- /**
- * clgen_dbg_print_regs
- * @base: If using newmmio, the newmmio base address, otherwise %NULL
- * @reg_class: type of registers to read: %CRT, or %SEQ
- *
- * DESCRIPTION:
- * Dumps the given list of VGA CRTC registers. If @base is %NULL,
- * old-style I/O ports are queried for information, otherwise MMIO is
- * used at the given @base address to query the information.
- */
- static
- void clgen_dbg_print_regs (caddr_t regbase, clgen_dbg_reg_class_t reg_class,...)
- {
- va_list list;
- unsigned char val = 0;
- unsigned reg;
- char *name;
- va_start (list, reg_class);
- name = va_arg (list, char *);
- while (name != NULL) {
- reg = va_arg (list, int);
- switch (reg_class) {
- case CRT:
- val = vga_rcrt (regbase, (unsigned char) reg);
- break;
- case SEQ:
- val = vga_rseq (regbase, (unsigned char) reg);
- break;
- default:
- /* should never occur */
- assert (FALSE);
- break;
- }
- clgen_dbg_print_byte (name, val);
- name = va_arg (list, char *);
- }
- va_end (list);
- }
- /**
- * clgen_dump
- * @clgeninfo:
- *
- * DESCRIPTION:
- */
- static
- void clgen_dump (void)
- {
- clgen_dbg_reg_dump (NULL);
- }
- /**
- * clgen_dbg_reg_dump
- * @base: If using newmmio, the newmmio base address, otherwise %NULL
- *
- * DESCRIPTION:
- * Dumps a list of interesting VGA and CLGEN registers. If @base is %NULL,
- * old-style I/O ports are queried for information, otherwise MMIO is
- * used at the given @base address to query the information.
- */
- static
- void clgen_dbg_reg_dump (caddr_t regbase)
- {
- DPRINTK ("CLGEN VGA CRTC register dump:n");
- clgen_dbg_print_regs (regbase, CRT,
- "CR00", 0x00,
- "CR01", 0x01,
- "CR02", 0x02,
- "CR03", 0x03,
- "CR04", 0x04,
- "CR05", 0x05,
- "CR06", 0x06,
- "CR07", 0x07,
- "CR08", 0x08,
- "CR09", 0x09,
- "CR0A", 0x0A,
- "CR0B", 0x0B,
- "CR0C", 0x0C,
- "CR0D", 0x0D,
- "CR0E", 0x0E,
- "CR0F", 0x0F,
- "CR10", 0x10,
- "CR11", 0x11,
- "CR12", 0x12,
- "CR13", 0x13,
- "CR14", 0x14,
- "CR15", 0x15,
- "CR16", 0x16,
- "CR17", 0x17,
- "CR18", 0x18,
- "CR22", 0x22,
- "CR24", 0x24,
- "CR26", 0x26,
- "CR2D", 0x2D,
- "CR2E", 0x2E,
- "CR2F", 0x2F,
- "CR30", 0x30,
- "CR31", 0x31,
- "CR32", 0x32,
- "CR33", 0x33,
- "CR34", 0x34,
- "CR35", 0x35,
- "CR36", 0x36,
- "CR37", 0x37,
- "CR38", 0x38,
- "CR39", 0x39,
- "CR3A", 0x3A,
- "CR3B", 0x3B,
- "CR3C", 0x3C,
- "CR3D", 0x3D,
- "CR3E", 0x3E,
- "CR3F", 0x3F,
- NULL);
- DPRINTK ("n");
- DPRINTK ("CLGEN VGA SEQ register dump:n");
- clgen_dbg_print_regs (regbase, SEQ,
- "SR00", 0x00,
- "SR01", 0x01,
- "SR02", 0x02,
- "SR03", 0x03,
- "SR04", 0x04,
- "SR08", 0x08,
- "SR09", 0x09,
- "SR0A", 0x0A,
- "SR0B", 0x0B,
- "SR0D", 0x0D,
- "SR10", 0x10,
- "SR11", 0x11,
- "SR12", 0x12,
- "SR13", 0x13,
- "SR14", 0x14,
- "SR15", 0x15,
- "SR16", 0x16,
- "SR17", 0x17,
- "SR18", 0x18,
- "SR19", 0x19,
- "SR1A", 0x1A,
- "SR1B", 0x1B,
- "SR1C", 0x1C,
- "SR1D", 0x1D,
- "SR1E", 0x1E,
- "SR1F", 0x1F,
- NULL);
- DPRINTK ("n");
- }
- #endif /* CLGEN_DEBUG */