au1200fb.c

来自「Linux环境下视频显示卡设备的驱动程序源代码」· C语言 代码 · 共 1,922 行 · 第 1/4 页

		.mode_backlight	= 0x00000000,
		.mode_auxpll		= 6, /* 72MHz AUXPLL */
		.device_init		= NULL,
		.device_shutdown	= NULL,
		1024, 1024,
		768, 768,
	},

	[4] = { /* XVGA XVGA 1280x1024 H:68.5kHz V:65Hz */
		.name = "XVGA_1280x1024",
		.monspecs = {
			.modedb = NULL,
			.modedb_len = 0,
			.hfmin = 30000,
			.hfmax = 70000,
			.vfmin = 60,
			.vfmax = 60,
			.dclkmin = 6000000,
			.dclkmax = 28000000,
			.input = FB_DISP_RGB,
		},
		.mode_screen		= 0x27fbff80,
		.mode_horztiming	= 0x00cdb2c7,
		.mode_verttiming	= 0x00600002,
		.mode_clkcontrol	= 0x000A0000, /* /1 */
		.mode_pwmdiv		= 0x00000000,
		.mode_pwmhi		= 0x00000000,
		.mode_outmask	= 0x00FFFFFF,
		.mode_fifoctrl	= 0x2f2f2f2f,
		.mode_toyclksrc	= 0x00000004, /* AUXPLL directly */
		.mode_backlight	= 0x00000000,
		.mode_auxpll		= 10, /* 120MHz AUXPLL */
		.device_init		= NULL,
		.device_shutdown	= NULL,
		1280, 1280,
		1024, 1024,
	},

	[5] = { /* Samsung 1024x768 TFT */
		.name = "Samsung_1024x768_TFT",
		.monspecs = {
			.modedb = NULL,
			.modedb_len = 0,
			.hfmin = 30000,
			.hfmax = 70000,
			.vfmin = 60,
			.vfmax = 60,
			.dclkmin = 6000000,
			.dclkmax = 28000000,
			.input = FB_DISP_RGB,
		},
		.mode_screen		= 0x1ffaff80,
		.mode_horztiming	= 0x018cc677,
		.mode_verttiming	= 0x00241217,
		.mode_clkcontrol	= 0x00000000, /* SCB 0x1 /4=24Mhz */
		.mode_pwmdiv		= 0x8000063f, /* SCB 0x0 */
		.mode_pwmhi		= 0x03400000, /* SCB 0x0 */
		.mode_outmask	= 0x00FFFFFF,
		.mode_fifoctrl	= 0x2f2f2f2f,
		.mode_toyclksrc	= 0x00000004, /* AUXPLL directly */
		.mode_backlight	= 0x00000000,
		.mode_auxpll		= 8, /* 96MHz AUXPLL */
		.device_init		= board_au1200fb_panel_init,
		.device_shutdown	= board_au1200fb_panel_shutdown,
		1024, 1024,
		768, 768,
	},

	[6] = { /* Toshiba 640x480 TFT */
		.name = "Toshiba_640x480_TFT",
		.monspecs = {
			.modedb = NULL,
			.modedb_len = 0,
			.hfmin = 30000,
			.hfmax = 70000,
			.vfmin = 60,
			.vfmax = 60,
			.dclkmin = 6000000,
			.dclkmax = 28000000,
			.input = FB_DISP_RGB,
		},
		.mode_screen		= LCD_SCREEN_SX_N(640) |
			LCD_SCREEN_SY_N(480),
		.mode_horztiming	= LCD_HORZTIMING_HPW_N(96) |
			LCD_HORZTIMING_HND1_N(13) | LCD_HORZTIMING_HND2_N(51),
		.mode_verttiming	= LCD_VERTTIMING_VPW_N(2) |
			LCD_VERTTIMING_VND1_N(11) | LCD_VERTTIMING_VND2_N(32),
		.mode_clkcontrol	= 0x00000000, /* /4=24Mhz */
		.mode_pwmdiv		= 0x8000063f,
		.mode_pwmhi		= 0x03400000,
		.mode_outmask	= 0x00fcfcfc,
		.mode_fifoctrl	= 0x2f2f2f2f,
		.mode_toyclksrc	= 0x00000004, /* AUXPLL directly */
		.mode_backlight	= 0x00000000,
		.mode_auxpll		= 8, /* 96MHz AUXPLL */
		.device_init		= board_au1200fb_panel_init,
		.device_shutdown	= board_au1200fb_panel_shutdown,
		640, 480,
		640, 480,
	},

	[7] = { /* Sharp 320x240 TFT */
		.name = "Sharp_320x240_TFT",
		.monspecs = {
			.modedb = NULL,
			.modedb_len = 0,
			.hfmin = 12500,
			.hfmax = 20000,
			.vfmin = 38,
			.vfmax = 81,
			.dclkmin = 4500000,
			.dclkmax = 6800000,
			.input = FB_DISP_RGB,
		},
		.mode_screen		= LCD_SCREEN_SX_N(320) |
			LCD_SCREEN_SY_N(240),
		.mode_horztiming	= LCD_HORZTIMING_HPW_N(60) |
			LCD_HORZTIMING_HND1_N(13) | LCD_HORZTIMING_HND2_N(2),
		.mode_verttiming	= LCD_VERTTIMING_VPW_N(2) |
			LCD_VERTTIMING_VND1_N(2) | LCD_VERTTIMING_VND2_N(5),
		.mode_clkcontrol	= LCD_CLKCONTROL_PCD_N(7), /*16=6Mhz*/
		.mode_pwmdiv		= 0x8000063f,
		.mode_pwmhi		= 0x03400000,
		.mode_outmask	= 0x00fcfcfc,
		.mode_fifoctrl	= 0x2f2f2f2f,
		.mode_toyclksrc	= 0x00000004, /* AUXPLL directly */
		.mode_backlight	= 0x00000000,
		.mode_auxpll		= 8, /* 96MHz AUXPLL */
		.device_init		= board_au1200fb_panel_init,
		.device_shutdown	= board_au1200fb_panel_shutdown,
		320, 320,
		240, 240,
	},

	[8] = { /* Toppoly TD070WGCB2 7" 856x480 TFT */
		.name = "Toppoly_TD070WGCB2",
		.monspecs = {
			.modedb = NULL,
			.modedb_len = 0,
			.hfmin = 30000,
			.hfmax = 70000,
			.vfmin = 60,
			.vfmax = 60,
			.dclkmin = 6000000,
			.dclkmax = 28000000,
			.input = FB_DISP_RGB,
		},
		.mode_screen		= LCD_SCREEN_SX_N(856) |
			LCD_SCREEN_SY_N(480),
		.mode_horztiming	= LCD_HORZTIMING_HND2_N(43) |
			LCD_HORZTIMING_HND1_N(43) | LCD_HORZTIMING_HPW_N(114),
		.mode_verttiming	= LCD_VERTTIMING_VND2_N(20) |
			LCD_VERTTIMING_VND1_N(21) | LCD_VERTTIMING_VPW_N(4),
		.mode_clkcontrol	= 0x00020001, /* /4=24Mhz */
		.mode_pwmdiv		= 0x8000063f,
		.mode_pwmhi		= 0x03400000,
		.mode_outmask	= 0x00fcfcfc,
		.mode_fifoctrl	= 0x2f2f2f2f,
		.mode_toyclksrc	= 0x00000004, /* AUXPLL directly */
		.mode_backlight	= 0x00000000,
		.mode_auxpll		= 8, /* 96MHz AUXPLL */
		.device_init		= board_au1200fb_panel_init,
		.device_shutdown	= board_au1200fb_panel_shutdown,
		856, 856,
		480, 480,
	},
};

#define NUM_PANELS (ARRAY_SIZE(known_lcd_panels))

/********************************************************************/

#ifdef CONFIG_PM
static int set_brightness(unsigned int brightness)
{
	unsigned int hi1, divider;

	/* limit brightness pwm duty to >= 30/1600 */
	if (brightness < 30) {
		brightness = 30;
	}
	divider = (lcd->pwmdiv & 0x3FFFF) + 1;
	hi1 = (lcd->pwmhi >> 16) + 1;
	hi1 = (((brightness & 0xFF) + 1) * divider >> 8);
	lcd->pwmhi &= 0xFFFF;
	lcd->pwmhi |= (hi1 << 16);

	return brightness;
}
#endif /* CONFIG_PM */

static int winbpp (unsigned int winctrl1)
{
	int bits = 0;

	/* how many bits are needed for each pixel format */
	switch (winctrl1 & LCD_WINCTRL1_FRM) {
	case LCD_WINCTRL1_FRM_1BPP:
		bits = 1;
		break;
	case LCD_WINCTRL1_FRM_2BPP:
		bits = 2;
		break;
	case LCD_WINCTRL1_FRM_4BPP:
		bits = 4;
		break;
	case LCD_WINCTRL1_FRM_8BPP:
		bits = 8;
		break;
	case LCD_WINCTRL1_FRM_12BPP:
	case LCD_WINCTRL1_FRM_16BPP655:
	case LCD_WINCTRL1_FRM_16BPP565:
	case LCD_WINCTRL1_FRM_16BPP556:
	case LCD_WINCTRL1_FRM_16BPPI1555:
	case LCD_WINCTRL1_FRM_16BPPI5551:
	case LCD_WINCTRL1_FRM_16BPPA1555:
	case LCD_WINCTRL1_FRM_16BPPA5551:
		bits = 16;
		break;
	case LCD_WINCTRL1_FRM_24BPP:
	case LCD_WINCTRL1_FRM_32BPP:
		bits = 32;
		break;
	}

	return bits;
}

static int fbinfo2index (struct fb_info *fb_info)
{
	int i;

	for (i = 0; i < CONFIG_FB_AU1200_DEVS; ++i) {
		if (fb_info == (struct fb_info *)(&_au1200fb_devices[i].fb_info))
			return i;
	}
	printk("au1200fb: ERROR: fbinfo2index failed!\n");
	return -1;
}

static int au1200_setlocation (struct au1200fb_device *fbdev, int plane,
	int xpos, int ypos)
{
	uint32 winctrl0, winctrl1, winenable, fb_offset = 0;
	int xsz, ysz;

	/* FIX!!! NOT CHECKING FOR COMPLETE OFFSCREEN YET */

	winctrl0 = lcd->window[plane].winctrl0;
	winctrl1 = lcd->window[plane].winctrl1;
	winctrl0 &= (LCD_WINCTRL0_A | LCD_WINCTRL0_AEN);
	winctrl1 &= ~(LCD_WINCTRL1_SZX | LCD_WINCTRL1_SZY);

	/* Check for off-screen adjustments */
	xsz = win->w[plane].xres;
	ysz = win->w[plane].yres;
	if ((xpos + win->w[plane].xres) > panel->Xres) {
		/* Off-screen to the right */
		xsz = panel->Xres - xpos; /* off by 1 ??? */
		/*printk("off screen right\n");*/
	}

	if ((ypos + win->w[plane].yres) > panel->Yres) {
		/* Off-screen to the bottom */
		ysz = panel->Yres - ypos; /* off by 1 ??? */
		/*printk("off screen bottom\n");*/
	}

	if (xpos < 0) {
		/* Off-screen to the left */
		xsz = win->w[plane].xres + xpos;
		fb_offset += (((0 - xpos) * winbpp(lcd->window[plane].winctrl1))/8);
		xpos = 0;
		/*printk("off screen left\n");*/
	}

	if (ypos < 0) {
		/* Off-screen to the top */
		ysz = win->w[plane].yres + ypos;
		/* fixme: fb_offset += ((0-ypos)*fb_pars[plane].line_length); */
		ypos = 0;
		/*printk("off screen top\n");*/
	}

	/* record settings */
	win->w[plane].xpos = xpos;
	win->w[plane].ypos = ypos;

	xsz -= 1;
	ysz -= 1;
	winctrl0 |= (xpos << 21);
	winctrl0 |= (ypos << 10);
	winctrl1 |= (xsz << 11);
	winctrl1 |= (ysz << 0);

	/* Disable the window while making changes, then restore WINEN */
	winenable = lcd->winenable & (1 << plane);
	au_sync();
	lcd->winenable &= ~(1 << plane);
	lcd->window[plane].winctrl0 = winctrl0;
	lcd->window[plane].winctrl1 = winctrl1;
	lcd->window[plane].winbuf0 =
	lcd->window[plane].winbuf1 = fbdev->fb_phys;
	lcd->window[plane].winbufctrl = 0; /* select winbuf0 */
	lcd->winenable |= winenable;
	au_sync();

	return 0;
}

static void au1200_setpanel (struct panel_settings *newpanel)
{
	/*
	 * Perform global setup/init of LCD controller
	 */
	uint32 winenable;

	/* Make sure all windows disabled */
	winenable = lcd->winenable;
	lcd->winenable = 0;
	au_sync();
	/*
	 * Ensure everything is disabled before reconfiguring
	 */
	if (lcd->screen & LCD_SCREEN_SEN) {
		/* Wait for vertical sync period */
		lcd->intstatus = LCD_INT_SS;
		while ((lcd->intstatus & LCD_INT_SS) == 0) {
			au_sync();
		}

		lcd->screen &= ~LCD_SCREEN_SEN;	/*disable the controller*/

		do {
			lcd->intstatus = lcd->intstatus; /*clear interrupts*/
			au_sync();
		/*wait for controller to shut down*/
		} while ((lcd->intstatus & LCD_INT_SD) == 0);

		/* Call shutdown of current panel (if up) */
		/* this must occur last, because if an external clock is driving
		    the controller, the clock cannot be turned off before first
			shutting down the controller.
		 */
		if (panel->device_shutdown != NULL)
			panel->device_shutdown();
	}

	/* Newpanel == NULL indicates a shutdown operation only */
	if (newpanel == NULL)
		return;

	panel = newpanel;

	printk("Panel(%s), %dx%d\n", panel->name, panel->Xres, panel->Yres);

	/*
	 * Setup clocking if internal LCD clock source (assumes sys_auxpll valid)
	 */
	if (!(panel->mode_clkcontrol & LCD_CLKCONTROL_EXT))
	{
		uint32 sys_clksrc;
		au_writel(panel->mode_auxpll, SYS_AUXPLL);
		sys_clksrc = au_readl(SYS_CLKSRC) & ~0x0000001f;
		sys_clksrc |= panel->mode_toyclksrc;
		au_writel(sys_clksrc, SYS_CLKSRC);
	}

	/*
	 * Configure panel timings
	 */
	lcd->screen = panel->mode_screen;
	lcd->horztiming = panel->mode_horztiming;
	lcd->verttiming = panel->mode_verttiming;
	lcd->clkcontrol = panel->mode_clkcontrol;
	lcd->pwmdiv = panel->mode_pwmdiv;
	lcd->pwmhi = panel->mode_pwmhi;
	lcd->outmask = panel->mode_outmask;
	lcd->fifoctrl = panel->mode_fifoctrl;
	au_sync();

	/* fixme: Check window settings to make sure still valid
	 * for new geometry */
#if 0
	au1200_setlocation(fbdev, 0, win->w[0].xpos, win->w[0].ypos);
	au1200_setlocation(fbdev, 1, win->w[1].xpos, win->w[1].ypos);
	au1200_setlocation(fbdev, 2, win->w[2].xpos, win->w[2].ypos);
	au1200_setlocation(fbdev, 3, win->w[3].xpos, win->w[3].ypos);
#endif
	lcd->winenable = winenable;

	/*
	 * Re-enable screen now that it is configured
	 */
	lcd->screen |= LCD_SCREEN_SEN;
	au_sync();

	/* Call init of panel */
	if (panel->device_init != NULL) panel->device_init();

	/* FIX!!!! not appropriate on panel change!!! Global setup/init */
	lcd->intenable = 0;
	lcd->intstatus = ~0;
	lcd->backcolor = win->mode_backcolor;

	/* Setup Color Key - FIX!!! */
	lcd->colorkey = win->mode_colorkey;
	lcd->colorkeymsk = win->mode_colorkeymsk;

	/* Setup HWCursor - FIX!!! Need to support this eventually */
	lcd->hwc.cursorctrl = 0;
	lcd->hwc.cursorpos = 0;
	lcd->hwc.cursorcolor0 = 0;
	lcd->hwc.cursorcolor1 = 0;
	lcd->hwc.cursorcolor2 = 0;
	lcd->hwc.cursorcolor3 = 0;


#if 0
#define D(X) printk("%25s: %08X\n", #X, X)
	D(lcd->screen);
	D(lcd->horztiming);
	D(lcd->verttiming);
	D(lcd->clkcontrol);
	D(lcd->pwmdiv);
	D(lcd->pwmhi);
	D(lcd->outmask);
	D(lcd->fifoctrl);
	D(lcd->window[0].winctrl0);
	D(lcd->window[0].winctrl1);
	D(lcd->window[0].winctrl2);
	D(lcd->window[0].winbuf0);
	D(lcd->window[0].winbuf1);
	D(lcd->window[0].winbufctrl);
	D(lcd->window[1].winctrl0);
	D(lcd->window[1].winctrl1);
	D(lcd->window[1].winctrl2);
	D(lcd->window[1].winbuf0);
	D(lcd->window[1].winbuf1);
	D(lcd->window[1].winbufctrl);
	D(lcd->window[2].winctrl0);
	D(lcd->window[2].winctrl1);
	D(lcd->window[2].winctrl2);
	D(lcd->window[2].winbuf0);
	D(lcd->window[2].winbuf1);
	D(lcd->window[2].winbufctrl);
	D(lcd->window[3].winctrl0);
	D(lcd->window[3].winctrl1);
	D(lcd->window[3].winctrl2);
	D(lcd->window[3].winbuf0);
	D(lcd->window[3].winbuf1);
	D(lcd->window[3].winbufctrl);
	D(lcd->winenable);
	D(lcd->intenable);
	D(lcd->intstatus);
	D(lcd->backcolor);
	D(lcd->winenable);
	D(lcd->colorkey);
    D(lcd->colorkeymsk);
	D(lcd->hwc.cursorctrl);
	D(lcd->hwc.cursorpos);
	D(lcd->hwc.cursorcolor0);
	D(lcd->hwc.cursorcolor1);
	D(lcd->hwc.cursorcolor2);
	D(lcd->hwc.cursorcolor3);
#endif
}

static void au1200_setmode(struct au1200fb_device *fbdev)
{
	int plane = fbdev->plane;
	/* Window/plane setup */
	lcd->window[plane].winctrl1 = ( 0
		| LCD_WINCTRL1_PRI_N(plane)
		| win->w[plane].mode_winctrl1 /* FRM,CCO,PO,PIPE */
		) ;

	au1200_setlocation(fbdev, plane, win->w[plane].xpos, win->w[plane].ypos);

	lcd->window[plane].winctrl2 = ( 0
		| LCD_WINCTRL2_CKMODE_00