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Commit 0ad83f68 authored by Guennadi Liakhovetski's avatar Guennadi Liakhovetski Committed by Paul Mundt
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fbdev: when parsing E-EDID blocks, also use SVD entries 



Add parsing of E-EDID SVD entries. In this first version only a few
CEA/EIA-861E modes are implemented, more can be added as needed.

Signed-off-by: default avatarGuennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: default avatarPaul Mundt <lethal@linux-sh.org>
parent e4105119

drivers/video/fbmon.c

+33 −4
Original line number Diff line number Diff line
@@ -983,7 +983,8 @@ void fb_edid_add_monspecs(unsigned char *edid, struct fb_monspecs *specs) 
	unsigned char *block;

	struct fb_videomode *m;

	int num = 0, i;

	u8 edt[(128 - 4) / DETAILED_TIMING_DESCRIPTION_SIZE];

	u8 svd[64], edt[(128 - 4) / DETAILED_TIMING_DESCRIPTION_SIZE];

	u8 pos = 4, svd_n = 0;



	if (!edid)

		return;
@@ -995,6 +996,21 @@ void fb_edid_add_monspecs(unsigned char *edid, struct fb_monspecs *specs) 
	    edid[2] < 4 || edid[2] > 128 - DETAILED_TIMING_DESCRIPTION_SIZE)

		return;



	DPRINTK("  Short Video Descriptors\n");



	while (pos < edid[2]) {

		u8 len = edid[pos] & 0x1f, type = (edid[pos] >> 5) & 7;

		pr_debug("Data block %u of %u bytes\n", type, len);

		if (type == 2)

			for (i = pos; i < pos + len; i++) {

				u8 idx = edid[pos + i] & 0x7f;

				svd[svd_n++] = idx;

				pr_debug("N%sative mode #%d\n",

					 edid[pos + i] & 0x80 ? "" : "on-n", idx);

			}

		pos += len + 1;

	}



	block = edid + edid[2];



	DPRINTK("  Extended Detailed Timings\n");
@@ -1005,10 +1021,10 @@ void fb_edid_add_monspecs(unsigned char *edid, struct fb_monspecs *specs) 
			edt[num++] = block - edid;



	/* Yikes, EDID data is totally useless */

	if (!num)

	if (!(num + svd_n))

		return;



	m = kzalloc((specs->modedb_len + num) *

	m = kzalloc((specs->modedb_len + num + svd_n) *

		       sizeof(struct fb_videomode), GFP_KERNEL);



	if (!m)
@@ -1023,9 +1039,22 @@ void fb_edid_add_monspecs(unsigned char *edid, struct fb_monspecs *specs) 
		pr_debug("Adding %ux%u@%u\n", m[i].xres, m[i].yres, m[i].refresh);

	}



	for (i = specs->modedb_len + num; i < specs->modedb_len + num + svd_n; i++) {

		int idx = svd[i - specs->modedb_len - num];

		if (!idx || idx > 63) {

			pr_warning("Reserved SVD code %d\n", idx);

		} else if (idx > ARRAY_SIZE(cea_modes) || !cea_modes[idx].xres) {

			pr_warning("Unimplemented SVD code %d\n", idx);

		} else {

			memcpy(&m[i], cea_modes + idx, sizeof(m[i]));

			pr_debug("Adding SVD #%d: %ux%u@%u\n", idx,

				 m[i].xres, m[i].yres, m[i].refresh);

		}

	}



	kfree(specs->modedb);

	specs->modedb = m;

	specs->modedb_len = specs->modedb_len + num;

	specs->modedb_len = specs->modedb_len + num + svd_n;

}



/*

drivers/video/modedb.c

+43 −0
Original line number Diff line number Diff line
@@ -278,6 +278,49 @@ static const struct fb_videomode modedb[] = { 
};



#ifdef CONFIG_FB_MODE_HELPERS

const struct fb_videomode cea_modes[64] = {

	/* #1: 640x480p@59.94/60Hz */

	[1] = {

		NULL, 60, 640, 480, 39722, 48, 16, 33, 10, 96, 2, 0, FB_VMODE_NONINTERLACED, 0,

	},

	/* #3: 720x480p@59.94/60Hz */

	[3] = {

		NULL, 60, 720, 480, 37037, 60, 16, 30, 9, 62, 6, 0, FB_VMODE_NONINTERLACED, 0,

	},

	/* #5: 1920x1080i@59.94/60Hz */

	[5] = {

		NULL, 60, 1920, 1080, 13763, 148, 88, 15, 2, 44, 5, 0, FB_VMODE_INTERLACED, 0,

	},

	/* #7: 720(1440)x480iH@59.94/60Hz */

	[7] = {

		NULL, 60, 1440, 480, 18554/*37108*/, 114, 38, 15, 4, 124, 3, 0, FB_VMODE_INTERLACED, 0,

	},

	/* #9: 720(1440)x240pH@59.94/60Hz */

	[9] = {

		NULL, 60, 1440, 240, 18554, 114, 38, 16, 4, 124, 3, 0, FB_VMODE_NONINTERLACED, 0,

	},

	/* #18: 720x576pH@50Hz */

	[18] = {

		NULL, 50, 720, 576, 37037, 68, 12, 39, 5, 64, 5, 0, FB_VMODE_NONINTERLACED, 0,

	},

	/* #19: 1280x720p@50Hz */

	[19] = {

		NULL, 50, 1280, 720, 13468, 220, 440, 20, 5, 40, 5, 0, FB_VMODE_NONINTERLACED, 0,

	},

	/* #20: 1920x1080i@50Hz */

	[20] = {

		NULL, 50, 1920, 1080, 13480, 148, 528, 15, 5, 528, 5, 0, FB_VMODE_INTERLACED, 0,

	},

	/* #32: 1920x1080p@23.98/24Hz */

	[32] = {

		NULL, 24, 1920, 1080, 13468, 148, 638, 36, 4, 44, 5, 0, FB_VMODE_NONINTERLACED, 0,

	},

	/* #35: (2880)x480p4x@59.94/60Hz */

	[35] = {

		NULL, 50, 2880, 480, 11100, 240, 64, 30, 9, 248, 6, 0, FB_VMODE_NONINTERLACED, 0,

	},

};



const struct fb_videomode vesa_modes[] = {

	/* 0 640x350-85 VESA */

	{ NULL, 85, 640, 350, 31746,  96, 32, 60, 32, 64, 3,

include/linux/fb.h

+1 −0
Original line number Diff line number Diff line
@@ -1151,6 +1151,7 @@ struct fb_videomode { 


extern const char *fb_mode_option;

extern const struct fb_videomode vesa_modes[];

extern const struct fb_videomode cea_modes[64];



struct fb_modelist {

	struct list_head list;