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lib: Change IOSF SB devfn to 0.0

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The devfn field in the IOSF SB messages is only relevant when there's a
real PCI bus or some other multifunction device behind a single port.
Otherwise the port number itself is enough to uniquely identify the
target. In fact some IOSF SB targets reject the access when devfn is not
0.0 (eg. GPIO_NC on BYT).

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
This commit is contained in:
Ville Syrjälä 2015-02-05 16:12:11 +02:00
parent 06a9c35664
commit 0a3ef582da
1 changed files with 1 additions and 1 deletions
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2
lib/intel_iosf.c
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@ -28,7 +28,7 @@ static int vlv_sideband_rw(uint32_t port, uint8_t opcode, uint32_t addr,
bar = 0;
be = 0xf;
devfn = 16;
devfn = 0;
cmd = (devfn << IOSF_DEVFN_SHIFT) | (opcode << IOSF_OPCODE_SHIFT) |
(port << IOSF_PORT_SHIFT) | (be << IOSF_BYTE_ENABLES_SHIFT) |