path: root/drivers/video/aty/radeon_monitor.c

#include "radeonfb.h"

#include <linux/slab.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;
}


#if defined(CONFIG_PPC_OF) || defined(CONFIG_SPARC)
/*
 * 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 };
	const u8 *pedid = NULL;
	const u8 *pmt = NULL;
	u8 *tmp;
        int i, mt = MT_NONE;  
	
	pr_debug("analyzing OF properties...\n");
	pmt = of_get_property(dp, "display-type", NULL);
	if (!pmt)
		return MT_NONE;
	pr_debug("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 = of_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 = of_get_property(dp->parent,
				(hdno == 0) ? "EDID1" : "EDID2", NULL);
	if (pedid == NULL && dp->parent && (hdno == 0))
		pedid = of_get_property(dp->parent, "EDID", NULL);
	if (pedid == NULL)
		return mt;

	tmp = kmemdup(pedid, EDID_LENGTH, GFP_KERNEL);
	if (!tmp)
		return mt;
	*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;

	pr_debug("radeon_probe_OF_head\n