From: Salvatore Bellizzi <lkml@seppia.net>
Date: Wed, 7 Mar 2018 13:56:43 +0000 (+0100)
Subject: platform/chrome: cros_ec_lpc: Add support for Google devices using custom coreboot... 
X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=f56db262e46d3368ee4e5c9e19797853cab382cd;p=openwrt%2Fstaging%2Fblogic.git

platform/chrome: cros_ec_lpc: Add support for Google devices using custom coreboot firmware

This patch adds generic device information to the DMI table of
the cros_ec_lpc driver, needed for Chromebooks/boxes using a
custom coreboot firmware.

The DMI info would not contain "Google_*" as BIOS version string,
instead the system vendor string would still be "GOOGLE", so this
seems to be a reasonable match for every Chromebook/box running
a custom firmware.

Signed-off-by: Salvatore Bellizzi <lkml@seppia.net>
Signed-off-by: Vittorio Gambaletta <linuxbugs@vittgam.net>
Signed-off-by: Benson Leung <bleung@chromium.org>
---

diff --git a/drivers/platform/chrome/cros_ec_lpc.c b/drivers/platform/chrome/cros_ec_lpc.c
index 2a40c2b1a7ff..3682e1539251 100644
--- a/drivers/platform/chrome/cros_ec_lpc.c
+++ b/drivers/platform/chrome/cros_ec_lpc.c
@@ -345,6 +345,18 @@ static const struct dmi_system_id cros_ec_lpc_dmi_table[] __initconst = {
 			DMI_MATCH(DMI_BIOS_VERSION, "Google_"),
 		},
 	},
+	{
+		/*
+		 * If the box is running custom coreboot firmware then the
+		 * DMI BIOS version string will not be matched by "Google_",
+		 * but the system vendor string will still be matched by
+		 * "GOOGLE".
+		 */
+		.matches = {
+			DMI_MATCH(DMI_BIOS_VENDOR, "coreboot"),
+			DMI_MATCH(DMI_SYS_VENDOR, "GOOGLE"),
+		},
+	},
 	{
 		/* x86-link, the Chromebook Pixel. */
 		.matches = {