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| author | Tomas Winkler <tomas.winkler@intel.com> | 2014-03-18 22:51:58 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2014-05-03 19:20:23 -0400 |
| commit | ee7e5afd2c369b64ffcf419d38ce7ad1c709a53e (patch) | |
| tree | b61d3eea96f2fee5ab8209c44a41dced1e023a60 /drivers/misc/mei/hw-txe.c | |
| parent | b16c35716b843acdbe562bc0068580c50db203ff (diff) | |
| download | blackbird-op-linux-ee7e5afd2c369b64ffcf419d38ce7ad1c709a53e.tar.gz blackbird-op-linux-ee7e5afd2c369b64ffcf419d38ce7ad1c709a53e.zip | |
mei: condition PGI support on HW and HBM version
Enable power gating isolation only if hw and fw support it.
This is indicated by ME_PGIC_HRA bit in ME_CSR_HA register
and on HBM protocol version.
The information is exported to MEI layer through
new pg_is_enabled hw op.
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/misc/mei/hw-txe.c')
| -rw-r--r-- | drivers/misc/mei/hw-txe.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/drivers/misc/mei/hw-txe.c b/drivers/misc/mei/hw-txe.c index f60182a52f96..49f197a956c9 100644 --- a/drivers/misc/mei/hw-txe.c +++ b/drivers/misc/mei/hw-txe.c @@ -280,6 +280,18 @@ int mei_txe_aliveness_set_sync(struct mei_device *dev, u32 req) } /** + * mei_txe_pg_is_enabled - detect if PG is supported by HW + * + * @dev: the device structure + * + * returns: true is pg supported, false otherwise + */ +static bool mei_txe_pg_is_enabled(struct mei_device *dev) +{ + return true; +} + +/** * mei_txe_input_ready_interrupt_enable - sets the Input Ready Interrupt * * @dev: the device structure @@ -1017,6 +1029,8 @@ static const struct mei_hw_ops mei_txe_hw_ops = { .hw_config = mei_txe_hw_config, .hw_start = mei_txe_hw_start, + .pg_is_enabled = mei_txe_pg_is_enabled, + .intr_clear = mei_txe_intr_clear, .intr_enable = mei_txe_intr_enable, .intr_disable = mei_txe_intr_disable, |
