diff options
| author |   Mario Limonciello <mario.limonciello@amd.com> | 2022-03-03 07:13:27 -0600 |
|---|---|---|
| committer |   Mika Westerberg <mika.westerberg@linux.intel.com> | 2022-03-04 17:10:36 +0300 |
| commit | 51d4d64c7ce50a501db4688b36448819755ae74d (patch) | |
| tree | 384310cb9ae3a3b5bc6270cc0834a5f8d214d85f /drivers/thunderbolt/tb_regs.h | |
| parent | thunderbolt: Do not make DROM read success compulsory (diff) | |
| download | linux-dev-51d4d64c7ce50a501db4688b36448819755ae74d.tar.xz linux-dev-51d4d64c7ce50a501db4688b36448819755ae74d.zip | |
thunderbolt: Clarify register definitions for `tb_cap_plug_events`
The USB4 1.0 specification outlines the `cap_plug_events` structure as
`VSC_CS_1`. This shows that 4 bits of `VSC_CS_1` are TBT3 compatible in
USB4, but TBT3 controllers also support disabling XHCI.
Update the names and comments to more closely match the specification.
This should not change anything functionally.
Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Diffstat (limited to 'drivers/thunderbolt/tb_regs.h')
| -rw-r--r-- | drivers/thunderbolt/tb_regs.h | 18 |
1 files changed, 11 insertions, 7 deletions
diff --git a/drivers/thunderbolt/tb_regs.h b/drivers/thunderbolt/tb_regs.h index 70795a2aa9bb..db3005cba203 100644 --- a/drivers/thunderbolt/tb_regs.h +++ b/drivers/thunderbolt/tb_regs.h @@ -146,14 +146,14 @@ struct tb_eeprom_ctl { struct tb_cap_plug_events { struct tb_cap_extended_short cap_header; - u32 __unknown1:2; - u32 plug_events:5; - u32 __unknown2:25; - u32 __unknown3; - u32 __unknown4; + u32 __unknown1:2; /* VSC_CS_1 */ + u32 plug_events:5; /* VSC_CS_1 */ + u32 __unknown2:25; /* VSC_CS_1 */ + u32 vsc_cs_2; + u32 vsc_cs_3; struct tb_eeprom_ctl eeprom_ctl; - u32 __unknown5[7]; - u32 drom_offset; /* 32 bit register, but eeprom addresses are 16 bit */ + u32 __unknown5[7]; /* VSC_CS_5 -> VSC_CS_11 */ + u32 drom_offset; /* VSC_CS_12: 32 bit register, but eeprom addresses are 16 bit */ } __packed; /* device headers */ @@ -464,6 +464,10 @@ struct tb_regs_hop { /* Plug Events registers */ #define TB_PLUG_EVENTS_USB_DISABLE BIT(2) +#define TB_PLUG_EVENTS_CS_1_LANE_DISABLE BIT(3) +#define TB_PLUG_EVENTS_CS_1_DPOUT_DISABLE BIT(4) +#define TB_PLUG_EVENTS_CS_1_LOW_DPIN_DISABLE BIT(5) +#define TB_PLUG_EVENTS_CS_1_HIGH_DPIN_DISABLE BIT(6) #define TB_PLUG_EVENTS_PCIE_WR_DATA 0x1b #define TB_PLUG_EVENTS_PCIE_CMD 0x1c |