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Commit 6f6ae06e authored by Corentin Chary's avatar Corentin Chary Committed by Matthew Garrett
Browse files

samsung-laptop: dump model and version informations 



We still need to figure out exactly what each of different fields
represent, but they contain at least model and version informations.

Signed-off-by: default avatarCorentin Chary <corentincj@iksaif.net>
Acked-by: default avatarGreg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: default avatarMatthew Garrett <mjg@redhat.com>
parent 3be324a9

drivers/platform/x86/samsung-laptop.c

+42 −0
Original line number Diff line number Diff line
@@ -303,6 +303,7 @@ struct samsung_laptop_debug { 


	struct debugfs_blob_wrapper f0000_wrapper;

	struct debugfs_blob_wrapper data_wrapper;

	struct debugfs_blob_wrapper sdiag_wrapper;

};



struct samsung_laptop;
@@ -337,6 +338,8 @@ struct samsung_laptop { 


	bool handle_backlight;

	bool has_stepping_quirk;



	char sdiag[64];

};
@@ -1164,6 +1167,9 @@ static int samsung_debugfs_init(struct samsung_laptop *samsung) 
	samsung->debug.data_wrapper.data = &samsung->debug.data;

	samsung->debug.data_wrapper.size = sizeof(samsung->debug.data);



	samsung->debug.sdiag_wrapper.data = samsung->sdiag;

	samsung->debug.sdiag_wrapper.size = strlen(samsung->sdiag);



	dent = debugfs_create_u16("command", S_IRUGO | S_IWUSR,

				  samsung->debug.root, &samsung->debug.command);

	if (!dent)
@@ -1207,6 +1213,12 @@ static int samsung_debugfs_init(struct samsung_laptop *samsung) 
	if (!dent)

		goto error_debugfs;



	dent = debugfs_create_blob("sdiag", S_IRUGO | S_IWUSR,

				   samsung->debug.root,

				   &samsung->debug.sdiag_wrapper);

	if (!dent)

		goto error_debugfs;



	return 0;



error_debugfs:
@@ -1259,6 +1271,34 @@ static __init void samsung_sabi_infos(struct samsung_laptop *samsung, int loca, 
	printk(KERN_DEBUG " SABI pointer = 0x%08x\n", ifaceP);

}



static void __init samsung_sabi_diag(struct samsung_laptop *samsung)

{

	int loca = find_signature(samsung->f0000_segment, "SDiaG@");

	int i;



	if (loca == 0xffff)

		return ;



	/* Example:

	 * Ident: @SDiaG@686XX-N90X3A/966-SEC-07HL-S90X3A

	 *

	 * Product name: 90X3A

	 * BIOS Version: 07HL

	 */

	loca += 1;

	for (i = 0; loca < 0xffff && i < sizeof(samsung->sdiag) - 1; loca++) {

		char temp = readb(samsung->f0000_segment + loca);



		if (isalnum(temp) || temp == '/' || temp == '-')

			samsung->sdiag[i++] = temp;

		else

			break ;

	}



	if (debug && samsung->sdiag[0])

		pr_info("sdiag: %s", samsung->sdiag);

}



static int __init samsung_sabi_init(struct samsung_laptop *samsung)

{

	const struct sabi_config *config = NULL;
@@ -1276,6 +1316,8 @@ static int __init samsung_sabi_init(struct samsung_laptop *samsung) 
		goto exit;

	}



	samsung_sabi_diag(samsung);



	/* Try to find one of the signatures in memory to find the header */

	for (i = 0; sabi_configs[i].test_string != 0; ++i) {

		samsung->config = &sabi_configs[i];