/* drivers/video/pvr2fb.c
*
* Frame buffer and fbcon support for the NEC PowerVR2 found within the Sega
* Dreamcast.
*
* Copyright (c) 2001 M. R. Brown <mrbrown@0xd6.org>
* Copyright (c) 2001, 2002, 2003 Paul Mundt <lethal@linux-sh.org>
*
* This file is part of the LinuxDC project (linuxdc.sourceforge.net).
*
*/
/*
* This driver is mostly based on the excellent amifb and vfb sources. It uses
* an odd scheme for converting hardware values to/from framebuffer values,
* here are some hacked-up formulas:
*
* The Dreamcast has screen offsets from each side of its four borders and
* the start offsets of the display window. I used these values to calculate
* 'pseudo' values (think of them as placeholders) for the fb video mode, so
* that when it came time to convert these values back into their hardware
* values, I could just add mode- specific offsets to get the correct mode
* settings:
*
* left_margin = diwstart_h - borderstart_h;
* right_margin = borderstop_h - (diwstart_h + xres);
* upper_margin = diwstart_v - borderstart_v;
* lower_margin = borderstop_v - (diwstart_h + yres);
*
* hsync_len = borderstart_h + (hsync_total - borderstop_h);
* vsync_len = borderstart_v + (vsync_total - borderstop_v);
*
* Then, when it's time to convert back to hardware settings, the only
* constants are the borderstart_* offsets, all other values are derived from
* the fb video mode:
*
* // PAL
* borderstart_h = 116;
* borderstart_v = 44;
* ...
* borderstop_h = borderstart_h + hsync_total - hsync_len;
* ...
* diwstart_v = borderstart_v - upper_margin;
*
* However, in the current implementation, the borderstart values haven't had
* the benefit of being fully researched, so some modes may be broken.
*/
#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/config.h>
#include <linux/interrupt.h>
#include <linux/fb.h>
#include <linux/init.h>
#ifdef CONFIG_SH_DREAMCAST
#include <asm/io.h>
#include <asm/machvec.h>
#include <asm/dc_sysasic.h>
#endif
#ifdef CONFIG_MTRR
#include <asm/mtrr.h>
#endif
#ifdef CONFIG_FB_PVR2_DEBUG
# define DPRINTK(fmt, args...) printk(KERN_DEBUG "%s: " fmt, __FUNCTION__ , ## args)
#else
# define DPRINTK(fmt, args...)
#endif
/* 2D video registers */
#define DISP_BASE 0xa05f8000
#define DISP_BRDRCOLR (DISP_BASE + 0x40)
#define DISP_DIWMODE (DISP_BASE + 0x44)
#define DISP_DIWADDRL (DISP_BASE + 0x50)
#define DISP_DIWADDRS (DISP_BASE + 0x54)
#define DISP_DIWSIZE (DISP_BASE + 0x5c)
#define DISP_SYNCCONF (DISP_BASE + 0xd0)
#define DISP_BRDRHORZ (DISP_BASE + 0xd4)
#define DISP_SYNCSIZE (DISP_BASE + 0xd8)
#define DISP_BRDRVERT (DISP_BASE + 0xdc)
#define DISP_DIWCONF (DISP_BASE + 0xe8)
#define DISP_DIWHSTRT (DISP_BASE + 0xec)
#define DISP_DIWVSTRT (DISP_BASE + 0xf0)
/* Pixel clocks, one for TV output, doubled for VGA output */
#define TV_CLK 74239
#define VGA_CLK 37119
/* This is for 60Hz - the VTOTAL is doubled for interlaced modes */
#define PAL_HTOTAL 863
#define PAL_VTOTAL 312
#define NTSC_HTOTAL 857
#define NTSC_VTOTAL 262
enum { CT_VGA, CT_NONE, CT_RGB, CT_COMPOSITE };
enum { VO_PAL, VO_NTSC, VO_VGA };
struct pvr2_params { u_short val; char *name; };
static struct pvr2_params cables[] __initdata = {
{ CT_VGA, "VGA" }, { CT_RGB, "RGB" }, { CT_COMPOSITE, "COMPOSITE" },
};
static struct pvr2_params outputs[] __initdata = {
{ VO_PAL, "PAL" }, { VO_NTSC, "NTSC" }, { VO_VGA, "VGA" },
};
/*
* This describes the current video mode
*/
static struct pvr2fb_par {
u_short hsync_total; /* Clocks/line */
u_short vsync_total; /* Lines/field */
u_short borderstart_h;
u_short borderstop_h;
u_short borderstart_v;
u_short borderstop_v;
u_short diwstart_h; /* Horizontal offset of the display field */
u_short diwstart_v; /* Vertical offset of the display field, for
interlaced modes, this is the long field */
u_long disp_start; /* Address of image within VRAM */
u_char is_interlaced; /* Is the display interlaced? */
u_char is_doublescan; /* Are scanlines output twice? (doublescan) */
u_char is_lowres; /* Is horizontal pixel-doubling enabled? */
} *currentpar;
static struct fb_info *fb_info;
static int pvr2fb_inverse = 0;
static struct fb_fix_screeninfo pvr2_fix __initdata = {
.id = "NEC PowerVR2",
.type = FB_TYPE_PACKED_PIXELS,
.visual = FB_VISUAL_TRUECOLOR,
.ypanstep = 1,
.ywrapstep = 1,
.accel = FB_ACCEL_NONE,
};
static struct fb_var_screeninfo pvr2_var __initdata = {
.xres = 640,
.yres = 480,
.xres_virtual = 640,
.yres_virtual = 480,
.bits_per_pixel =16,
.red = { 11, 5, 0 },
.green = { 5, 6, 0 },
.blue = { 0, 5, 0 },
.activate = FB_ACTIVATE_NOW,
.height = -1,
.width = -1,
.vmode = FB_VMODE_NONINTERLACED,
};
#define VIDEOMEMSIZE (8*1024*1024)
static u_long videomemory = 0xa5000000, videomemorysize = VIDEOMEMSIZE;
static int cable_type = -1;
static int video_output = -1;
static int nopan = 0;
static int nowrap = 1;
/*
* We do all updating, blanking, etc. during the vertical retrace period
*/
static u_short do_vmode_full = 0; /* Change the video mode */
static u_short do_vmode_pan = 0; /* Update the video mode */
static short do_blank = 0; /* (Un)Blank the screen */
static u_short is_blanked = 0; /* Is the screen blanked? */
/* Interface used by the world */
int pvr2fb_setup(char*);
static int pvr2fb_setcolreg(u_int regno, u_int red, u_int green, u_int blue,
u_int transp, struct fb_info *info);
static int pvr2fb_blank(int blank, struct fb_info *info);
static u_long get_line_length(int xres_virtual, int bpp);
static void set_color_bitfields(struct fb_var_screeninfo *var);
static int pvr2fb_check_var(struct fb_var_screeninfo *var, struct fb_info *info);
static int pvr2fb_set_par(struct fb_info *info);
static void pvr2_update_display(struct fb_info *info);
static void pvr2_init_display(struct fb_info *info);
static void pvr2_do_blank(void);
static irqreturn_t pvr2fb_interrupt(int irq, void *dev_id, struct pt_regs *fp);
static int pvr2_init_cable(void);
static int pvr2_get_param(const struct pvr2_params *p, const char *s,
int val, int size);
static struct fb_ops pvr2fb_ops = {
.owner = THIS_MODULE,
.fb_setcolreg = pvr2fb_setcolreg,
.fb_blank = pvr2fb_blank,
.fb_check_var = pvr2fb_check_var,
.fb_set_par = pvr2fb_set_par,
.fb_fillrect = cfb_fillrect,
.fb_copyarea = cfb_copyarea,
.fb_imageblit = cfb_imageblit,
.fb_cursor = soft_cursor,
};
static struct fb_videomode pvr2_modedb[] __initdata = {
/*
* Broadcast video modes (PAL and NTSC). I'm unfamiliar with
* PAL-M and PAL-N, but from what I've read both modes parallel PAL and
* NTSC, so it shouldn't be a problem (I hope).
*/
{
/* 640x480 @ 60Hz interlaced (NTSC) */
"ntsc_640x480i", 60, 640, 480, TV_CLK, 38, 33, 0, 18, 146, 26,
FB_SYNC_BROADCAST, FB_VMODE_INTERLACED | FB_VMODE_YWRAP
}, {
/* 640x240 @ 60Hz (NTSC) */
/* XXX: Broken! Don't use... */
"ntsc_640x240", 60, 640, 240, TV_CLK, 38, 33, 0, 0, 146, 22,
FB_SYNC_BROADCAST, FB_VMODE_YWRAP
}, {
/* 640x480 @ 60hz (VGA) */
"vga_640x480", 60, 640, 480, VGA_CLK, 38, 33, 0, 18, 146, 26,
0, FB_VMODE_YWRAP
},
};
#define NUM_TOTAL_MODES ARRAY_SIZE(pvr2_modedb)
#define DEFMODE_NTSC 0
#define DEFMODE_PAL 0
#define DEFMODE_VGA 2
static int defmode = DEFMODE_NTSC;
static char *mode_option __initdata = NULL;
static int pvr2fb_blank(int blank, struct fb_info *info)
{
do_blank = blank ? blank : -1;
return 0;
}
static inline u_long get_line_length(int xres_virtual, int bpp)
{
return (u_long)((((xres_virtual*bpp)+31)&~31) >> 3);
}
static void set_color_bitfields(struct fb_var_screeninfo *var)
{
switch (var->bits_per_pixel) {
case 16: /* RGB 565 */
var->red.offset = 11; var->red.length = 5;
var->green.offset = 5; var->green.length = 6;
var->blue.offset = 0; var->blue.length = 5;
var->transp.offset = 0; var->transp.length = 0;
break;
case 24: /* RGB 888 */
var->red.offset = 16; var->red.length = 8;
var->green.offset = 8; var->green.length = 8;
var->blue.offset = 0; var->blue.length = 8;
var->transp.offset = 0; var->transp.length = 0;
break;
case 32: /* ARGB 8888 */
var->red.offset = 16; var->red.length = 8;
var->green.offset = 8; var->green.length = 8;
var->blue.offset = 0; var->blue.length = 8;
var->transp.offset = 24; var->transp.length = 8;
break;
}
}
static int pvr2fb_setcolreg(u_int regno, u_int red, u_int green, u_int blue,
u_int transp, struct fb_info *info)
{
if (regno > 255)
return 1;
if (regno < 16) {
switch (info->var.bits_per_pixel) {
case 16: /* RGB 565 */
((u16*)(info->pseudo_palette))[regno] = (red & 0xf800) |
((green & 0xfc00) >> 5) |
((blue & 0xf800) >> 11);
break;
case 24: /* RGB 888 */
red >>= 8; green >>= 8; blue >>= 8;
((u32*)(info->pseudo_palette))[regno] = (red << 16) | (green << 8) | blue;
break;
case 32: /* ARGB 8888 */
red >>= 8; green >>= 8; blue >>= 8;
((u32*)(info->pseudo_palette))[regno] = (transp << 24) |(red << 16) | (green << 8) | blue;
break;
default:
DPRINTK("Invalid bit depth %d?!?\n", info->var.bits_per_pixel);
return 1;
}
}
return 0;
}
static int pvr2fb_set_par(struct fb_info *info)
{
struct pvr2fb_par *par = (struct pvr2fb_par *)info->par;
struct fb_var_screeninfo *var = &info->var;
u_long line_length;
u_short vtotal;
/*
* XXX: It's possible that a user could use a VGA box, change the cable
* type in hardware (i.e. switch from VGA<->composite), then change
* modes (i.e. switching to another VT). If that happens we should
* automagically change the output format to cope, but currently I
* don't have a VGA box to make sure this works properly.
*/
cable_type = pvr2_init_cable();
if (cable_type == CT_VGA && video_output != VO_VGA)
video_output = VO_VGA;
var->vmode &= FB_VMODE_MASK;
if (var->vmode & FB_VMODE_INTERLACED && video_output != VO_VGA)
par->is_interlaced = 1;
/*
* XXX: Need to be more creative with this (i.e. allow doublecan for
* PAL/NTSC output).
*/
if (var->vmode & FB_VMODE_DOUBLE && video_output == VO_VGA)
par->is_doublescan = 1;
par->hsync_total = var->left_margin + var->xres + var->right_margin +
var->hsync_len;
par->vsync_total = var->upper_margin + var->yres + var->lower_margin +
var->vsync_len;
if (var->sync & FB_SYNC_BROADCAST) {
vtotal = par->vsync_total;
if (par->is_interlaced)
vtotal /= 2;
if (vtotal > (PAL_VTOTAL + NTSC_VTOTAL)/2) {
/* XXX: Check for start values here... */
/* XXX: Check hardware for PAL-compatibility */
par->borderstart_h = 116;
par->borderstart_v = 44;
} else {
/* NTSC video output */
par->borderstart_h = 126;
par->borderstart_v = 18;
}
} else {
/* VGA mode */
/* XXX: What else needs to be checked? */
/*
* XXX: We have a little freedom in VGA modes, what ranges
* should be here (i.e. hsync/vsync totals, etc.)?
*/
par->borderstart_h = 126;
par->borderstart_v = 40;
}
/* Calculate the remainding offsets */
par->diwstart_h = par->borderstart_h + var->left_margin;
par->diwstart_v = par->borderstart_v + var->upper_margin;
par->borderstop_h = par->diwstart_h + var->xres +
var->right_margin;
par->borderstop_v = par->diwstart_v + var->yres +
var->lower_margin;
if (!par->is_interlaced)
par->borderstop_v /= 2;
if (info->var.xres < 640)
par->is_lowres = 1;
line_length = get_line_length(var->xres_virtual, var->bits_per_pixel);
par->disp_start = videomemory + (line_length * var->yoffset) * line_length;
info->fix.line_length = line_length;
return 0;
}
static int pvr2fb_check_var(struct fb_var_screeninfo *var, struct fb_info *info)
{
u_short vtotal, hsync_total;
u_long line_length;
if (var->pixclock != TV_CLK || var->pixclock != VGA_CLK) {
DPRINTK("Invalid pixclock value %d\n", var->pixclock);
return -EINVAL;
}
if (var->xres < 320)
var->xres = 320;
if (var->yres < 240)
var->yres = 240;
if (var->xres_virtual < var->xres)
var->xres_virtual = var->xres;
if (var->yres_virtual < var->yres)
var->yres_virtual = var->yres;
if (var->bits_per_pixel <= 16)
var->bits_per_pixel = 16;
else if (var->bits_per_pixel <= 24)
var->bits_per_pixel = 24;
else if (var->bits_per_pixel <= 32)
var->bits_per_pixel = 32;
set_color_bitfields(var);
if (var->vmode & FB_VMODE_YWRAP) {
if (var->xoffset || var->yoffset < 0 ||
var->yoffset >= var->yres_virtual) {
var->xoffset = var->yoffset = 0;
} else {
if (var->xoffset > var->xres_virtual - var->xres ||
var->yoffset > var->yres_virtual - var->yres ||
var->xoffset < 0 || var->yoffset < 0)
var->xoffset = var->yoffset = 0;
}
} else {
var->xoffset = var->yoffset = 0;
}
/*
* XXX: Need to be more creative with this (i.e. allow doublecan for
* PAL/NTSC output).
*/
if (var->yres < 480 && video_output == VO_VGA)
var->vmode = FB_VMODE_DOUBLE;
if (video_output != VO_VGA)
var->sync = FB_SYNC_BROADCAST | FB_VMODE_INTERLACED;
hsync_total = var->left_margin + var->xres + var->right_margin +
var->hsync_len;
vtotal = var->upper_margin + var->yres + var->lower_margin +
var->vsync_len;
if (var->sync & FB_SYNC_BROADCAST) {
if (var->vmode & FB_VMODE_INTERLACED)
vtotal /= 2;
if (vtotal > (PAL_VTOTAL + NTSC_VTOTAL)/2) {
/* PAL video output */
/* XXX: Should be using a range here ... ? */
if (hsync_total != PAL_HTOTAL) {
DPRINTK("invalid hsync total for PAL\n");
return -EINVAL;
}
} else {
/* NTSC video output */
if (hsync_total != NTSC_HTOTAL) {
DPRINTK("invalid hsync total for NTSC\n");
return -EINVAL;
}
}
}
/* Check memory sizes */
line_length = get_line_length(var->xres_virtual, var->bits_per_pixel);
if (line_length * var->yres_virtual > videomemorysize)
return -ENOMEM;
return 0;
}
static void pvr2_update_display(struct fb_info *info)
{
struct pvr2fb_par *par = (struct pvr2fb_par *) info->par;
struct fb_var_screeninfo *var = &info->var;
/* Update the start address of the display image */
ctrl_outl(par->disp_start, DISP_DIWADDRL);
ctrl_outl(par->disp_start +
get_line_length(var->xoffset+var->xres, var->bits_per_pixel),
DISP_DIWADDRS);
}
/*
* Initialize the video mode. Currently, the 16bpp and 24bpp modes aren't
* very stable. It's probably due to the fact that a lot of the 2D video
* registers are still undocumented.
*/
static void pvr2_init_display(struct fb_info *info)
{
struct pvr2fb_par *par = (struct pvr2fb_par *) info->par;
struct fb_var_screeninfo *var = &info->var;
u_short diw_height, diw_width, diw_modulo = 1;
u_short bytesperpixel = var->bits_per_pixel >> 3;
/* hsync and vsync totals */
ctrl_outl((par->vsync_total << 16) | par->hsync_total, DISP_SYNCSIZE);
/* column height, modulo, row width */
/* since we're "panning" within vram, we need to offset things based
* on the offset from the virtual x start to our real gfx. */
if (video_output != VO_VGA && par->is_interlaced)
diw_modulo += info->fix.line_length / 4;
diw_height = (par->is_interlaced ? var->yres / 2 : var->yres);
diw_width = get_line_length(var->xres, var->bits_per_pixel) / 4;
ctrl_outl((diw_modulo << 20) | (--diw_height << 10) | --diw_width,
DISP_DIWSIZE);
/* display address, long and short fields */
ctrl_outl(par->disp_start, DISP_DIWADDRL);
ctrl_outl(par->disp_start +
get_line_length(var->xoffset+var->xres, var->bits_per_pixel),
DISP_DIWADDRS);
/* border horizontal, border vertical, border color */
ctrl_outl((par->borderstart_h << 16) | par->borderstop_h, DISP_BRDRHORZ);
ctrl_outl((par->borderstart_v << 16) | par->borderstop_v, DISP_BRDRVERT);
ctrl_outl(0, DISP_BRDRCOLR);
/* display window start position */
ctrl_outl(par->diwstart_h, DISP_DIWHSTRT);
ctrl_outl((par->diwstart_v << 16) | par->diwstart_v, DISP_DIWVSTRT);
/* misc. settings */
ctrl_outl((0x16 << 16) | par->is_lowres, DISP_DIWCONF);
/* clock doubler (for VGA), scan doubler, display enable */
ctrl_outl(((video_output == VO_VGA) << 23) |
(par->is_doublescan << 1) | 1, DISP_DIWMODE);
/* bits per pixel */
ctrl_outl(ctrl_inl(DISP_DIWMODE) | (--bytesperpixel << 2), DISP_DIWMODE);
/* video enable, color sync, interlace,
* hsync and vsync polarity (currently unused) */
ctrl_outl(0x100 | ((par->is_interlaced /*|4*/) << 4), DISP_SYNCCONF);
}
/* Simulate blanking by making the border cover the entire screen */
#define BLANK_BIT (1<<3)
static void pvr2_do_blank(void)
{
u_long diwconf;
diwconf = ctrl_inl(DISP_DIWCONF);
if (do_blank > 0)
ctrl_outl(diwconf | BLANK_BIT, DISP_DIWCONF);
else
ctrl_outl(diwconf & ~BLANK_BIT, DISP_DIWCONF);
is_blanked = do_blank > 0 ? do_blank : 0;
}
static irqreturn_t pvr2fb_interrupt(int irq, void *dev_id, struct pt_regs *fp)
{
struct fb_info *info = dev_id;
if (do_vmode_pan || do_vmode_full)
pvr2_update_display(info);
if (do_vmode_full)
pvr2_init_display(info);
if (do_vmode_pan)
do_vmode_pan = 0;
if (do_vmode_full)
do_vmode_full = 0;
if (do_blank) {
pvr2_do_blank();
do_blank = 0;
}
return IRQ_HANDLED;
}
/*
* Determine the cable type and initialize the cable output format. Don't do
* anything if the cable type has been overidden (via "cable:XX").
*/
#define PCTRA 0xff80002c
#define PDTRA 0xff800030
#define VOUTC 0xa0702c00
static int pvr2_init_cable(void)
{
if (cable_type < 0) {
ctrl_outl((ctrl_inl(PCTRA) & 0xfff0ffff) | 0x000a0000,
PCTRA);
cable_type = (ctrl_inw(PDTRA) >> 8) & 3;
}
/* Now select the output format (either composite or other) */
/* XXX: Save the previous val first, as this reg is also AICA
related */
if (cable_type == CT_COMPOSITE)
ctrl_outl(3 << 8, VOUTC);
else
ctrl_outl(0, VOUTC);
return cable_type;
}
int __init pvr2fb_init(void)
{
u_long modememused;
int err = -EINVAL;
if (!mach_is_dreamcast())
return -ENXIO;
fb_info = kmalloc(sizeof(struct fb_info) + sizeof(struct pvr2fb_par) +
sizeof(u32) * 16, GFP_KERNEL);
if (!fb_info) {
printk(KERN_ERR "Failed to allocate memory for fb_info\n");
return -ENOMEM;
}
memset(fb_info, 0, sizeof(fb_info) + sizeof(struct pvr2fb_par) + sizeof(u32) * 16);
currentpar = (struct pvr2fb_par *)(fb_info + 1);
/* Make a guess at the monitor based on the attached cable */
if (pvr2_init_cable() == CT_VGA) {
fb_info->monspecs.hfmin = 30000;
fb_info->monspecs.hfmax = 70000;
fb_info->monspecs.vfmin = 60;
fb_info->monspecs.vfmax = 60;
} else {
/* Not VGA, using a TV (taken from acornfb) */
fb_info->monspecs.hfmin = 15469;
fb_info->monspecs.hfmax = 15781;
fb_info->monspecs.vfmin = 49;
fb_info->monspecs.vfmax = 51;
}
/*
* XXX: This needs to pull default video output via BIOS or other means
*/
if (video_output < 0) {
if (cable_type == CT_VGA) {
video_output = VO_VGA;
} else {
video_output = VO_NTSC;
}
}
pvr2_fix.smem_start = videomemory;
pvr2_fix.smem_len = videomemorysize;
fb_info->screen_base = ioremap_nocache(pvr2_fix.smem_start,
pvr2_fix.smem_len);
if (!fb_info->screen_base) {
printk("Failed to remap MMIO space\n");
err = -ENXIO;
goto out_err;
}
memset_io((unsigned long)fb_info->screen_base, 0, pvr2_fix.smem_len);
pvr2_fix.ypanstep = nopan ? 0 : 1;
pvr2_fix.ywrapstep = nowrap ? 0 : 1;
fb_info->fbops = &pvr2fb_ops;
fb_info->fix = pvr2_fix;
fb_info->par = currentpar;
fb_info->pseudo_palette = (void *)(fb_info->par + 1);
fb_info->flags = FBINFO_FLAG_DEFAULT;
if (video_output == VO_VGA)
defmode = DEFMODE_VGA;
if (!mode_option)
mode_option = "640x480@60";
if (!fb_find_mode(&fb_info->var, fb_info, mode_option, pvr2_modedb,
NUM_TOTAL_MODES, &pvr2_modedb[defmode], 16))
fb_info->var = pvr2_var;
if (request_irq(HW_EVENT_VSYNC, pvr2fb_interrupt, 0,
"pvr2 VBL handler", fb_info)) {
err = -EBUSY;
goto out_err;
}
if (register_framebuffer(fb_info) < 0)
goto reg_failed;
modememused = get_line_length(fb_info->var.xres_virtual,
fb_info->var.bits_per_pixel);
modememused *= fb_info->var.yres_virtual;
printk("fb%d: %s frame buffer device, using %ldk/%ldk of video memory\n",
fb_info->node, fb_info->fix.id, modememused>>10,
videomemorysize>>10);
printk("fb%d: Mode %dx%d-%d pitch = %ld cable: %s video output: %s\n",
fb_info->node, fb_info->var.xres, fb_info->var.yres,
fb_info->var.bits_per_pixel,
get_line_length(fb_info->var.xres, fb_info->var.bits_per_pixel),
(char *)pvr2_get_param(cables, NULL, cable_type, 3),
(char *)pvr2_get_param(outputs, NULL, video_output, 3));
return 0;
reg_failed:
free_irq(HW_EVENT_VSYNC, 0);
out_err:
kfree(fb_info);
return err;
}
static void __exit pvr2fb_exit(void)
{
unregister_framebuffer(fb_info);
free_irq(HW_EVENT_VSYNC, 0);
kfree(fb_info);
}
static int __init pvr2_get_param(const struct pvr2_params *p, const char *s,
int val, int size)
{
int i;
for (i = 0 ; i < size ; i++ ) {
if (s != NULL) {
if (!strnicmp(p[i].name, s, strlen(s)))
return p[i].val;
} else {
if (p[i].val == val)
return (int)p[i].name;
}
}
return -1;
}
/*
* Parse command arguments. Supported arguments are:
* inverse Use inverse color maps
* nomtrr Disable MTRR usage
* cable:composite|rgb|vga Override the video cable type
* output:NTSC|PAL|VGA Override the video output format
*
* <xres>x<yres>[-<bpp>][@<refresh>] or,
* <name>[-<bpp>][@<refresh>] Startup using this video mode
*/
#ifndef MODULE
int __init pvr2fb_setup(char *options)
{
char *this_opt;
char cable_arg[80];
char output_arg[80];
if (!options || !*options)
return 0;
while ((this_opt = strsep(&options, ","))) {
if (!*this_opt)
continue;
if (!strcmp(this_opt, "inverse")) {
pvr2fb_inverse = 1;
fb_invert_cmaps();
} else if (!strncmp(this_opt, "cable:", 6)) {
strcpy(cable_arg, this_opt + 6);
} else if (!strncmp(this_opt, "output:", 7)) {
strcpy(output_arg, this_opt + 7);
} else if (!strncmp(this_opt, "nopan", 5)) {
nopan = 1;
} else if (!strncmp(this_opt, "nowrap", 6)) {
nowrap = 1;
} else {
mode_option = this_opt;
}
}
if (*cable_arg)
cable_type = pvr2_get_param(cables, cable_arg, 0, 3);
if (*output_arg)
video_output = pvr2_get_param(outputs, output_arg, 0, 3);
return 0;
}
#endif
#ifdef MODULE
MODULE_LICENSE("GPL");
module_init(pvr2fb_init);
#endif
module_exit(pvr2fb_exit);
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