#include "radeonfb.h"#include "../edid.h"static struct fb_var_screeninfo radeonfb_default_var = {	.xres		= 640,	.yres		= 480,	.xres_virtual	= 640,	.yres_virtual	= 480,	.bits_per_pixel = 8,	.red		= { .length = 8 },	.green		= { .length = 8 },	.blue		= { .length = 8 },	.activate	= FB_ACTIVATE_NOW,	.height		= -1,	.width		= -1,	.pixclock	= 39721,	.left_margin	= 40,	.right_margin	= 24,	.upper_margin	= 32,	.lower_margin	= 11,	.hsync_len	= 96,	.vsync_len	= 2,	.vmode		= FB_VMODE_NONINTERLACED};static char *radeon_get_mon_name(int type){	char *pret = NULL;	switch (type) {		case MT_NONE:			pret = "no";			break;		case MT_CRT:			pret = "CRT";			break;		case MT_DFP:			pret = "DFP";			break;		case MT_LCD:			pret = "LCD";			break;		case MT_CTV:			pret = "CTV";			break;		case MT_STV:			pret = "STV";			break;	}	return pret;}#ifdef CONFIG_PPC_OF/* * Try to find monitor informations & EDID data out of the Open Firmware * device-tree. This also contains some "hacks" to work around a few machine * models with broken OF probing by hard-coding known EDIDs for some Mac * laptops internal LVDS panel. (XXX: not done yet) */static int __devinit radeon_parse_montype_prop(struct device_node *dp, u8 **out_EDID,					       int hdno){        static char *propnames[] = { "DFP,EDID", "LCD,EDID", "EDID",				     "EDID1", "EDID2",  NULL };	u8 *pedid = NULL;	u8 *pmt = NULL;	u8 *tmp;        int i, mt = MT_NONE;  		RTRACE("analyzing OF properties...\n");	pmt = (u8 *)get_property(dp, "display-type", NULL);	if (!pmt)		return MT_NONE;	RTRACE("display-type: %s\n", pmt);	/* OF says "LCD" for DFP as well, we discriminate from the caller of this	 * function	 */	if (!strcmp(pmt, "LCD") || !strcmp(pmt, "DFP"))		mt = MT_DFP;	else if (!strcmp(pmt, "CRT"))		mt = MT_CRT;	else {		if (strcmp(pmt, "NONE") != 0)			printk(KERN_WARNING "radeonfb: Unknown OF display-type: %s\n",			       pmt);		return MT_NONE;	}	for (i = 0; propnames[i] != NULL; ++i) {		pedid = (u8 *)get_property(dp, propnames[i], NULL);		if (pedid != NULL)			break;	}	/* We didn't find the EDID in the leaf node, some cards will actually	 * put EDID1/EDID2 in the parent, look for these (typically M6 tipb).	 * single-head cards have hdno == -1 and skip this step	 */	if (pedid == NULL && dp->parent && (hdno != -1))		pedid = get_property(dp->parent, (hdno == 0) ? "EDID1" : "EDID2", NULL);	if (pedid == NULL && dp->parent && (hdno == 0))		pedid = get_property(dp->parent, "EDID", NULL);	if (pedid == NULL)		return mt;	tmp = (u8 *)kmalloc(EDID_LENGTH, GFP_KERNEL);	if (!tmp)		return mt;	memcpy(tmp, pedid, EDID_LENGTH);	*out_EDID = tmp;	return mt;}static int __devinit radeon_probe_OF_head(struct radeonfb_info *rinfo, int head_no,					  u8 **out_EDID){        struct device_node *dp;	RTRACE("radeon_probe_OF_head\n");        dp = rinfo->of_node;        while (dp == NULL)		return MT_NONE;	if (rinfo->has_CRTC2) {		char *pname;		int len, second = 0;		dp = dp->child;		do {			if (!dp)				return MT_NONE;			pname = (char *)get_property(dp, "name", NULL);			if (!pname)				return MT_NONE;			len = strlen(pname);			RTRACE("head: %s (letter: %c, head_no: %d)\n",			       pname, pname[len-1], head_no);			if (pname[len-1] == 'A' && head_no == 0) {				int mt = radeon_parse_montype_prop(dp, out_EDID, 0);				/* Maybe check for LVDS_GEN_CNTL here ? I need to check out				 * what OF does when booting with lid closed				 */				if (mt == MT_DFP && rinfo->is_mobility)					mt = MT_LCD;				return mt;			} else if (pname[len-1] == 'B' && head_no == 1)				return radeon_parse_montype_prop(dp, out_EDID, 1);			second = 1;			dp = dp->sibling;		} while(!second);	} else {		if (head_no > 0)			return MT_NONE;		return radeon_parse_montype_prop(dp, out_EDID, -1);	}        return MT_NONE;}#endif /* CONFIG_PPC_OF */static int __devinit radeon_get_panel_info_BIOS(struct radeonfb_info *rinfo){	unsigned long tmp, tmp0;	char stmp[30];	int i;	if (!rinfo->bios_seg)		return 0;	if (!(tmp = BIOS_IN16(rinfo->fp_bios_start + 0x40))) {		printk(KERN_ERR "radeonfb: Failed to detect DFP panel info using BIOS\n");		rinfo->panel_info.pwr_delay = 200;		return 0;	}	for(i=0; i<24; i++)		stmp[i] = BIOS_IN8(tmp+i+1);	stmp[24] = 0;	printk("radeonfb: panel ID string: %s\n", stmp);	rinfo->panel_info.xres = BIOS_IN16(tmp + 25);	rinfo->panel_info.yres = BIOS_IN16(tmp + 27);	printk("radeonfb: detected LVDS panel size from BIOS: %dx%d\n",		rinfo->panel_info.xres, rinfo->panel_info.yres);	rinfo->panel_info.pwr_delay = BIOS_IN16(tmp + 44);	RTRACE("BIOS provided panel power delay: %d\n", rinfo->panel_info.pwr_delay);	if (rinfo->panel_info.pwr_delay > 2000 || rinfo->panel_info.pwr_delay <= 0)		rinfo->panel_info.pwr_delay = 2000;	/*	 * Some panels only work properly with some divider combinations	 */	rinfo->panel_info.ref_divider = BIOS_IN16(tmp + 46);	rinfo->panel_info.post_divider = BIOS_IN8(tmp + 48);	rinfo->panel_info.fbk_divider = BIOS_IN16(tmp + 49);	if (rinfo->panel_info.ref_divider != 0 &&	    rinfo->panel_info.fbk_divider > 3) {		rinfo->panel_info.use_bios_dividers = 1;		printk(KERN_INFO "radeondb: BIOS provided dividers will be used\n");		RTRACE("ref_divider = %x\n", rinfo->panel_info.ref_divider);		RTRACE("post_divider = %x\n", rinfo->panel_info.post_divider);		RTRACE("fbk_divider = %x\n", rinfo->panel_info.fbk_divider);	}	RTRACE("Scanning BIOS table ...\n");	for(i=0; i<32; i++) {		tmp0 = BIOS_IN16(tmp+64+i*2);		if (tmp0 == 0)			break;		RTRACE(" %d x %d\n", BIOS_IN16(tmp0), BIOS_IN16(tmp0+2));		if ((BIOS_IN16(tmp0) == rinfo->panel_info.xres) &&		    (BIOS_IN16(tmp0+2) == rinfo->panel_info.yres)) {			rinfo->panel_info.hblank = (BIOS_IN16(tmp0+17) - BIOS_IN16(tmp0+19)) * 8;			rinfo->panel_info.hOver_plus = ((BIOS_IN16(tmp0+21) -							 BIOS_IN16(tmp0+19) -1) * 8) & 0x7fff;			rinfo->panel_info.hSync_width = BIOS_IN8(tmp0+23) * 8;			rinfo->panel_info.vblank = BIOS_IN16(tmp0+24) - BIOS_IN16(tmp0+26);			rinfo->panel_info.vOver_plus = (BIOS_IN16(tmp0+28) & 0x7ff) - BIOS_IN16(tmp0+26);			rinfo->panel_info.vSync_width = (BIOS_IN16(tmp0+28) & 0xf800) >> 11;			rinfo->panel_info.clock = BIOS_IN16(tmp0+9);			/* Assume high active syncs for now until ATI tells me more... maybe we			 * can probe register values here ?			 */			rinfo->panel_info.hAct_high = 1;			rinfo->panel_info.vAct_high = 1;			/* Mark panel infos valid */			rinfo->panel_info.valid = 1;			RTRACE("Found panel in BIOS table:\n");			RTRACE("  hblank: %d\n", rinfo->panel_info.hblank);			RTRACE("  hOver_plus: %d\n", rinfo->panel_info.hOver_plus);			RTRACE("  hSync_width: %d\n", rinfo->panel_info.hSync_width);			RTRACE("  vblank: %d\n", rinfo->panel_info.vblank);			RTRACE("  vOver_plus: %d\n", rinfo->panel_info.vOver_plus);			RTRACE("  vSync_width: %d\n", rinfo->panel_info.vSync_width);			RTRACE("  clock: %d\n", rinfo->panel_info.clock);							return 1;		}	}	RTRACE("Didn't find panel in BIOS table !\n");	return 0;}/* Try to extract the connector informations from the BIOS. This * doesn't quite work yet, but it's output is still useful for * debugging */static void __devinit radeon_parse_connector_info(struct radeonfb_info *rinfo){	int offset, chips, connectors, tmp, i, conn, type;	static char* __conn_type_table[16] = {		"NONE", "Proprietary", "CRT", "DVI-I", "DVI-D", "Unknown", "Unknown",		"Unknown", "Unknown", "Unknown", "Unknown", "Unknown", "Unknown",		"Unknown", "Unknown", "Unknown"	};	if (!rinfo->bios_seg)		return;	offset = BIOS_IN16(rinfo->fp_bios_start + 0x50);	if (offset == 0) {		printk(KERN_WARNING "radeonfb: No connector info table detected\n");		return;	}	/* Don't do much more at this point but displaying the data if	 * DEBUG is enabled	 */	chips = BIOS_IN8(offset++) >> 4;	RTRACE("%d chips in connector info\n", chips);	for (i = 0; i < chips; i++) {		tmp = BIOS_IN8(offset++);		connectors = tmp & 0x0f;		RTRACE(" - chip %d has %d connectors\n", tmp >> 4, connectors);		for (conn = 0; ; conn++) {			tmp = BIOS_IN16(offset);			if (tmp == 0)				break;			offset += 2;			type = (tmp >> 12) & 0x0f;			RTRACE("  * connector %d of type %d (%s) : %04x\n",			       conn, type, __conn_type_table[type], tmp);		}	}}/* * Probe physical connection of a CRT. This code comes from XFree * as well and currently is only implemented for the CRT DAC, the * code for the TVDAC is commented out in XFree as "non working" */static int __devinit radeon_crt_is_connected(struct radeonfb_info *rinfo, int is_crt_dac){    int	          connected = 0;    /* the monitor either wasn't connected or it is a non-DDC CRT.     * try to probe it     */    if (is_crt_dac) {	unsigned long ulOrigVCLK_ECP_CNTL;	unsigned long ulOrigDAC_CNTL;	unsigned long ulOrigDAC_EXT_CNTL;	unsigned long ulOrigCRTC_EXT_CNTL;	unsigned long ulData;	unsigned long ulMask;	ulOrigVCLK_ECP_CNTL = INPLL(VCLK_ECP_CNTL);	ulData              = ulOrigVCLK_ECP_CNTL;	ulData             &= ~(PIXCLK_ALWAYS_ONb				| PIXCLK_DAC_ALWAYS_ONb);	ulMask              = ~(PIXCLK_ALWAYS_ONb				| PIXCLK_DAC_ALWAYS_ONb);	OUTPLLP(VCLK_ECP_CNTL, ulData, ulMask);	ulOrigCRTC_EXT_CNTL = INREG(CRTC_EXT_CNTL);	ulData              = ulOrigCRTC_EXT_CNTL;	ulData             |= CRTC_CRT_ON;	OUTREG(CRTC_EXT_CNTL, ulData);   	ulOrigDAC_EXT_CNTL = INREG(DAC_EXT_CNTL);	ulData             = ulOrigDAC_EXT_CNTL;	ulData            &= ~DAC_FORCE_DATA_MASK;	ulData            |=  (DAC_FORCE_BLANK_OFF_EN			       |DAC_FORCE_DATA_EN			       |DAC_FORCE_DATA_SEL_MASK);	if ((rinfo->family == CHIP_FAMILY_RV250) ||	    (rinfo->family == CHIP_FAMILY_RV280))	    ulData |= (0x01b6 << DAC_FORCE_DATA_SHIFT);	else	    ulData |= (0x01ac << DAC_FORCE_DATA_SHIFT);	OUTREG(DAC_EXT_CNTL, ulData);	ulOrigDAC_CNTL     = INREG(DAC_CNTL);	ulData             = ulOrigDAC_CNTL;	ulData            |= DAC_CMP_EN;	ulData            &= ~(DAC_RANGE_CNTL_MASK			       | DAC_PDWN);	ulData            |= 0x2;	OUTREG(DAC_CNTL, ulData);	mdelay(1);	ulData     = INREG(DAC_CNTL);	connected =  (DAC_CMP_OUTPUT & ulData) ? 1 : 0;  	ulData    = ulOrigVCLK_ECP_CNTL;	ulMask    = 0xFFFFFFFFL;	OUTPLLP(VCLK_ECP_CNTL, ulData, ulMask);	OUTREG(DAC_CNTL,      ulOrigDAC_CNTL     );	OUTREG(DAC_EXT_CNTL,  ulOrigDAC_EXT_CNTL );	OUTREG(CRTC_EXT_CNTL, ulOrigCRTC_EXT_CNTL);    }    return connected ? MT_CRT : MT_NONE;}/* * Parse the "monitor_layout" string if any. This code is mostly * copied from XFree's radeon driver */static int __devinit radeon_parse_monitor_layout(struct radeonfb_info *rinfo,						 const char *monitor_layout){	char s1[5], s2[5];	int i = 0, second = 0;	const char *s;	if (!monitor_layout)		return 0;	s = monitor_layout;	do {		switch(*s) {		case ',':			s1[i] = '\0';			i = 0;			second = 1;			break;		case ' ':		case '\0':			break;		default:			if (i > 4)				break;			if (second)				s2[i] = *s;			else				s1[i] = *s;			i++;		}	} while (*s++);	if (second)		s2[i] = 0;	else {		s1[i] = 0;		s2[0] = 0;	}	if (strcmp(s1, "CRT") == 0)		rinfo->mon1_type = MT_CRT;	else if (strcmp(s1, "TMDS") == 0)		rinfo->mon1_type = MT_DFP;	else if (strcmp(s1, "LVDS") == 0)		rinfo->mon1_type = MT_LCD;	if (strcmp(s2, "CRT") == 0)		rinfo->mon2_type = MT_CRT;	else if (strcmp(s2, "TMDS") == 0)		rinfo->mon2_type = MT_DFP;	else if (strcmp(s2, "LVDS") == 0)		rinfo->mon2_type = MT_LCD;	return 1;}/* * Probe display on both primary and secondary card's connector (if any) * by various available techniques (i2c, OF device tree, BIOS, ...) and * try to retreive EDID. The algorithm here comes from XFree's radeon * driver */void __devinit radeon_probe_screens(struct radeonfb_info *rinfo,				    const char *monitor_layout, int ignore_edid){#ifdef CONFIG_FB_RADEON_I2C	int ddc_crt2_used = 0;	#endif	int tmp, i;	radeon_parse_connector_info(rinfo);	if (radeon_parse_monitor_layout(rinfo, monitor_layout)) {		/*		 * If user specified a monitor_layout option, use it instead		 * of auto-detecting. Maybe we should only use this argument		 * on the first radeon card probed or provide a way to specify		 * a layout for each card ?		 */		RTRACE("Using specified monitor layout: %s", monitor_layout);#ifdef CONFIG_FB_RADEON_I2C		if (!ignore_edid) {			if (rinfo->mon1_type != MT_NONE)				if (!radeon_probe_i2c_connector(rinfo, ddc_dvi, &rinfo->mon1_EDID)) {					radeon_probe_i2c_connector(rinfo, ddc_crt2, &rinfo->mon1_EDID);					ddc_crt2_used = 1;				}			if (rinfo->mon2_type != MT_NONE)				if (!radeon_probe_i2c_connector(rinfo, ddc_vga, &rinfo->mon2_EDID) &&				    !ddc_crt2_used)					radeon_probe_i2c_connector(rinfo, ddc_crt2, &rinfo->mon2_EDID);		}#endif /* CONFIG_FB_RADEON_I2C */		if (rinfo->mon1_type == MT_NONE) {			if (rinfo->mon2_type != MT_NONE) {				rinfo->mon1_type = rinfo->mon2_type;				rinfo->mon1_EDID = rinfo->mon2_EDID;			} else {				rinfo->mon1_type = MT_CRT;				printk(KERN_INFO "radeonfb: No valid monitor, assuming CRT on first port\n");			}			rinfo->mon2_type = MT_NONE;			rinfo->mon2_EDID = NULL;		}	} else {		/*		 * Auto-detecting display type (well... trying to ...)		 */				RTRACE("Starting monitor auto detection...\n");#if DEBUG && defined(CONFIG_FB_RADEON_I2C)		{			u8 *EDIDs[4] = { NULL, NULL, NULL, NULL };			int mon_types[4] = {MT_NONE, MT_NONE, MT_NONE, MT_NONE};			int i;			for (i = 0; i < 4; i++)				mon_types[i] = radeon_probe_i2c_connector(rinfo,									  i+1, &EDIDs[i]);		}#endif /* DEBUG */		/*		 * Old single head cards		 */		if (!rinfo->has_CRTC2) {#ifdef CONFIG_PPC_OF			if (rinfo->mon1_type == MT_NONE)				rinfo->mon1_type = radeon_probe_OF_head(rinfo, 0,									&rinfo->mon1_EDID);#endif /* CONFIG_PPC_OF */#ifdef CONFIG_FB_RADEON_I2C			if (rinfo->mon1_type == MT_NONE)				rinfo->mon1_type =					radeon_probe_i2c_connector(rinfo, ddc_dvi,								   &rinfo->mon1_EDID);			if (rinfo->mon1_type == MT_NONE)				rinfo->mon1_type =