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mei: gsc: retrieve the firmware version

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Add a hook to retrieve the firmware version of the
GSC devices to bus-fixup.
GSC has a different MKHI clients GUIDs but the same message structure
to retrieve the firmware version as MEI so mei_fwver() can be reused.

CC: Ashutosh Dixit <ashutosh.dixit@intel.com>
Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com>
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Reviewed-by: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Signed-off-by: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220419193314.526966-6-daniele.ceraolospurio@intel.com
This commit is contained in:
Alexander Usyskin 2022-04-19 12:33:12 -07:00 committed by Daniele Ceraolo Spurio
parent ad10a35461
commit 1bc22fc53a
2 changed files with 27 additions and 0 deletions
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25
drivers/misc/mei/bus-fixup.c
View File

@ -30,6 +30,12 @@ static const uuid_le mei_nfc_info_guid = MEI_UUID_NFC_INFO;
#define MEI_UUID_MKHIF_FIX UUID_LE(0x55213584, 0x9a29, 0x4916, \
0xba, 0xdf, 0xf, 0xb7, 0xed, 0x68, 0x2a, 0xeb)
#define MEI_UUID_IGSC_MKHI UUID_LE(0xE2C2AFA2, 0x3817, 0x4D19, \
0x9D, 0x95, 0x06, 0xB1, 0x6B, 0x58, 0x8A, 0x5D)
#define MEI_UUID_IGSC_MKHI_FIX UUID_LE(0x46E0C1FB, 0xA546, 0x414F, \
0x91, 0x70, 0xB7, 0xF4, 0x6D, 0x57, 0xB4, 0xAD)
#define MEI_UUID_HDCP UUID_LE(0xB638AB7E, 0x94E2, 0x4EA2, \
0xA5, 0x52, 0xD1, 0xC5, 0x4B, 0x62, 0x7F, 0x04)
@ -241,6 +247,23 @@ static void mei_mkhi_fix(struct mei_cl_device *cldev)
mei_cldev_disable(cldev);
}
static void mei_gsc_mkhi_ver(struct mei_cl_device *cldev)
{
int ret;
/* No need to enable the client if nothing is needed from it */
if (!cldev->bus->fw_f_fw_ver_supported)
return;
ret = mei_cldev_enable(cldev);
if (ret)
return;
ret = mei_fwver(cldev);
if (ret < 0)
dev_err(&cldev->dev, "FW version command failed %d\n", ret);
mei_cldev_disable(cldev);
}
/**
* mei_wd - wd client on the bus, change protocol version
* as the API has changed.
@ -492,6 +515,8 @@ static struct mei_fixup {
MEI_FIXUP(MEI_UUID_NFC_HCI, mei_nfc),
MEI_FIXUP(MEI_UUID_WD, mei_wd),
MEI_FIXUP(MEI_UUID_MKHIF_FIX, mei_mkhi_fix),
MEI_FIXUP(MEI_UUID_IGSC_MKHI, mei_gsc_mkhi_ver),
MEI_FIXUP(MEI_UUID_IGSC_MKHI_FIX, mei_gsc_mkhi_ver),
MEI_FIXUP(MEI_UUID_HDCP, whitelist),
MEI_FIXUP(MEI_UUID_ANY, vt_support),
MEI_FIXUP(MEI_UUID_PAVP, whitelist),

2
drivers/misc/mei/hw-me.c
View File

@ -1584,12 +1584,14 @@ static const struct mei_cfg mei_me_pch15_sps_cfg = {
static const struct mei_cfg mei_me_gsc_cfg = {
MEI_CFG_TYPE_GSC,
MEI_CFG_PCH8_HFS,
MEI_CFG_FW_VER_SUPP,
};
/* Graphics System Controller Firmware Interface */
static const struct mei_cfg mei_me_gscfi_cfg = {
MEI_CFG_TYPE_GSCFI,
MEI_CFG_PCH8_HFS,
MEI_CFG_FW_VER_SUPP,
};
/*