diff options
| author | Alex Shi <alex.shi@linaro.org> | 2014-05-15 21:58:10 +0800 |
|---|---|---|
| committer | Alex Shi <alex.shi@linaro.org> | 2014-05-15 21:58:10 +0800 |
| commit | 3fcaaab93938cbcc6d8483ec41f45a95ce31adfa (patch) | |
| tree | 2946b4d2dd527a7cd7af24bbae63972b0cab1052 /drivers/misc | |
| parent | 10e6a99ce74c747eaf79f5287c935d2df3bc8f44 (diff) | |
| parent | 31c39ee311f03cc286a9b3d397eb92c050407cf0 (diff) | |
Merge branch 'linux-linaro-lsk' into linux-linaro-lsk-rt
Diffstat (limited to 'drivers/misc')
| -rw-r--r-- | drivers/misc/mei/hw-me-regs.h | 5 | ||||
| -rw-r--r-- | drivers/misc/mei/pci-me.c | 30 |
2 files changed, 28 insertions, 7 deletions
diff --git a/drivers/misc/mei/hw-me-regs.h b/drivers/misc/mei/hw-me-regs.h index 66f411a6e8ea..cabc04383685 100644 --- a/drivers/misc/mei/hw-me-regs.h +++ b/drivers/misc/mei/hw-me-regs.h @@ -115,6 +115,11 @@ #define MEI_DEV_ID_LPT_HR 0x8CBA /* Lynx Point H Refresh */ #define MEI_DEV_ID_WPT_LP 0x9CBA /* Wildcat Point LP */ + +/* Host Firmware Status Registers in PCI Config Space */ +#define PCI_CFG_HFS_1 0x40 +#define PCI_CFG_HFS_2 0x48 + /* * MEI HW Section */ diff --git a/drivers/misc/mei/pci-me.c b/drivers/misc/mei/pci-me.c index 371c65ae6be6..3c9e257982e3 100644 --- a/drivers/misc/mei/pci-me.c +++ b/drivers/misc/mei/pci-me.c @@ -105,15 +105,31 @@ static bool mei_me_quirk_probe(struct pci_dev *pdev, const struct pci_device_id *ent) { u32 reg; - if (ent->device == MEI_DEV_ID_PBG_1) { - pci_read_config_dword(pdev, 0x48, ®); - /* make sure that bit 9 is up and bit 10 is down */ - if ((reg & 0x600) == 0x200) { - dev_info(&pdev->dev, "Device doesn't have valid ME Interface\n"); - return false; - } + /* Cougar Point || Patsburg */ + if (ent->device == MEI_DEV_ID_CPT_1 || + ent->device == MEI_DEV_ID_PBG_1) { + pci_read_config_dword(pdev, PCI_CFG_HFS_2, ®); + /* make sure that bit 9 (NM) is up and bit 10 (DM) is down */ + if ((reg & 0x600) == 0x200) + goto no_mei; } + + /* Lynx Point */ + if (ent->device == MEI_DEV_ID_LPT_H || + ent->device == MEI_DEV_ID_LPT_W || + ent->device == MEI_DEV_ID_LPT_HR) { + /* Read ME FW Status check for SPS Firmware */ + pci_read_config_dword(pdev, PCI_CFG_HFS_1, ®); + /* if bits [19:16] = 15, running SPS Firmware */ + if ((reg & 0xf0000) == 0xf0000) + goto no_mei; + } + return true; + +no_mei: + dev_info(&pdev->dev, "Device doesn't have valid ME Interface\n"); + return false; } /** * mei_probe - Device Initialization Routine |