In case of a conflict between BIOS version and FW
version of the PPAG table - the values arrive in the FW in the wrong
places. This happens because we're storing the table in different
structures depending on the BIOS version, not on the FW version,
and so the FW doesn't get what it expect to.
Always store the table in a v2 structure (which is a superset
of v1 and v0).
Also store the table in a structured way and in it's own structure,
rather then storing it in the ppag command structure, similarly to
the WRDS, EWRD and WGDS tables.
Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Link: https://lore.kernel.org/r/iwlwifi.20211219121514.793a509da7bd.Ia176746a28b816b5f788cce9a281139735909e2a@changeid
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Change the SAR profile tables storage to revision 2 regardless of the
revision we read from ACPI. Revision 2 is a superset of revision 1,
which is in turn a superset of revision 0, so they can all be stored
inside revision 2.
Add support for reading and storing also revisions 1 and 2, whose only
difference is the number of chains and number of sub-bands. So most
of the code revolves around passing different chain and sub-band
sizes.
With this patch we still pass only revision 0 to the firmware, but
that will be changed in a separate patch.
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Link: https://lore.kernel.org/r/iwlwifi.20210805141826.2edad09415c8.I36297aef90a9ec6a3ea1bf1a151a62f272826d59@changeid
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
When adding support for version 3 of the GEO_TX_POWER_LIMIT command,
the table argument of iwl_sar_geo_init was changed from a pointer a 1d
array of now-removed iwl_per_chain_offset_group_v1 to a pointer to a 2d
array of iwl_per_chain_offset (iwl_per_chain_offset_group_v1 was a
struct containing 2 copies of iwl_per_chain_offset).
So even for version 2 where the second dimension is of length 2, which
means that the underlying memory layout of the array didn't change, this
requires a small change in the way we loop over it, and this was missed.
Additionally, for the case of version 3 where the second dimension is now
3, in order to fill the first two elements of each row correctly (lb and
hb), iwl_sar_geo_init must get the true number of bands supported.
But because we don't yet store any values for the 3rd (uhb) band, skip
that band.
Signed-off-by: Naftali Goldstein <naftali.goldstein@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/iwlwifi.20201008181047.73605b6e0548.Id0ec98333277ff9e017e3938ae413b34acc68947@changeid
Create a common structure to contain all different versions of the
tx_power_cmd instead of making a union of the different structs
everywhere we need them. Also move the common part of these structs
into a separate structure (instead of reusing v3) and leave the
per_chain_restriction part out of the common part, because this will
change in version 6 of the command (which will be added soon).
While at it, rename per_chain_restriction to per_chain to shorten it.
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Link: https://lore.kernel.org/r/iwlwifi.20200928121852.4f0bea9fe077.Ib3b540a8288af32d6fa213448e13f82763f85bc9@changeid
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Refactored the SAR related functions from iwlmvm to acpi
in order to make it shared between different opmodes
in addition to removing unused variable ppag_rev.
Signed-off-by: Ihab Zhaika <ihab.zhaika@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
TX power limits as defined in the OTP assume the worst case scenario
in terms of the platform's atenna gain, but most platforms are below
that value so they can use more TX power without passing the regulatory
limit. If the platform indicates in the BIOS that it indeed has lower
gain, and the geographic location allows it, higher TX power can be
used. The driver reads the PPAG (Per-Platform Antenna Gain) data from
BIOS (if it exists), validates it and sends the appropriate command to
the FW. This flow happens once at FW init, in case of suspend/resume
there is no need to read again from BIOS as we save those values during
init, so just send the PPAG command again to FW.
Signed-off-by: Gil Adam <gil.adam@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
South Korea is adding a more strict SAR limit called "Limb SAR".
Currently, WGDS SAR offset group 3 is not used (not mapped to any country).
In order to be able to comply with South Korea new restriction:
- OEM will use WGDS SAR offset group 3 to South Korea limitation.
- OEM will change WGDS revision to 1 (currently latest revision is 0)
to notify that Korea Limb SAR applied.
- Driver will read the WGDS table and pass the values to FW (as usual)
- Driver will pass to FW an indication that Korea Limb SAR is applied
in case table revision is 1.
Signed-off-by: Haim Dreyfuss <haim.dreyfuss@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
In low power modes, the chip clock source for platform integrated
devices is 32kHz. It is generated internally and supplied by a crystal
oscillator. However using a 32kHz sourced from crystal oscillator
has high power penalty.
There is an option to get an external 32kHz clock from the platform. Past
experience shows that the reliability is platform dependent,
i.e. on some platforms it works good and on other it doesn’t.
Working from external clock will save 0.5 mW in sleep state, from overall
1.8mW that we have today, i.e. almost 30%.
Each OEM can enable or disable the use of the external 32kHz clock by
setting a BIOS configuration. In case the OEM configured to use 32kHz
external clock the driver will pass this indication to the FW.
Signed-off-by: Haim Dreyfuss <haim.dreyfuss@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
From coreboot/BIOS:
Name ("WGDS", Package() {
Revision,
Package() {
DomainType, // 0x7:WiFi ==> We miss this one.
WgdsWiFiSarDeltaGroup1PowerMax1, // Group 1 FCC 2400 Max
WgdsWiFiSarDeltaGroup1PowerChainA1, // Group 1 FCC 2400 A Offset
WgdsWiFiSarDeltaGroup1PowerChainB1, // Group 1 FCC 2400 B Offset
WgdsWiFiSarDeltaGroup1PowerMax2, // Group 1 FCC 5200 Max
WgdsWiFiSarDeltaGroup1PowerChainA2, // Group 1 FCC 5200 A Offset
WgdsWiFiSarDeltaGroup1PowerChainB2, // Group 1 FCC 5200 B Offset
WgdsWiFiSarDeltaGroup2PowerMax1, // Group 2 EC Jap 2400 Max
WgdsWiFiSarDeltaGroup2PowerChainA1, // Group 2 EC Jap 2400 A Offset
WgdsWiFiSarDeltaGroup2PowerChainB1, // Group 2 EC Jap 2400 B Offset
WgdsWiFiSarDeltaGroup2PowerMax2, // Group 2 EC Jap 5200 Max
WgdsWiFiSarDeltaGroup2PowerChainA2, // Group 2 EC Jap 5200 A Offset
WgdsWiFiSarDeltaGroup2PowerChainB2, // Group 2 EC Jap 5200 B Offset
WgdsWiFiSarDeltaGroup3PowerMax1, // Group 3 ROW 2400 Max
WgdsWiFiSarDeltaGroup3PowerChainA1, // Group 3 ROW 2400 A Offset
WgdsWiFiSarDeltaGroup3PowerChainB1, // Group 3 ROW 2400 B Offset
WgdsWiFiSarDeltaGroup3PowerMax2, // Group 3 ROW 5200 Max
WgdsWiFiSarDeltaGroup3PowerChainA2, // Group 3 ROW 5200 A Offset
WgdsWiFiSarDeltaGroup3PowerChainB2, // Group 3 ROW 5200 B Offset
}
})
When read the ACPI data to find out the WGDS, the DATA_SIZE is never
matched.
From the above format, it gives 19 numbers, but our driver is hardcode
as 18.
Fix it to pass then can parse the data into our wgds table.
Then we will see:
iwlwifi 0000:01:00.0: U iwl_mvm_sar_geo_init Sending GEO_TX_POWER_LIMIT
iwlwifi 0000:01:00.0: U iwl_mvm_sar_geo_init SAR geographic profile[0]
Band[0]: chain A = 68 chain B = 69 max_tx_power = 54
iwlwifi 0000:01:00.0: U iwl_mvm_sar_geo_init SAR geographic profile[0]
Band[1]: chain A = 48 chain B = 49 max_tx_power = 70
iwlwifi 0000:01:00.0: U iwl_mvm_sar_geo_init SAR geographic profile[1]
Band[0]: chain A = 51 chain B = 67 max_tx_power = 50
iwlwifi 0000:01:00.0: U iwl_mvm_sar_geo_init SAR geographic profile[1]
Band[1]: chain A = 69 chain B = 70 max_tx_power = 68
iwlwifi 0000:01:00.0: U iwl_mvm_sar_geo_init SAR geographic profile[2]
Band[0]: chain A = 49 chain B = 50 max_tx_power = 48
iwlwifi 0000:01:00.0: U iwl_mvm_sar_geo_init SAR geographic profile[2]
Band[1]: chain A = 52 chain B = 53 max_tx_power = 51
Cc: stable@vger.kernel.org # 4.12+
Fixes: a6bff3cb19 ("iwlwifi: mvm: add GEO_TX_POWER_LIMIT cmd for geographic tx power table")
Signed-off-by: Matt Chen <matt.chen@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
The Free Software Foundation address is superfluous and causes
checkpatch to issue a warning when present. Remove all paragraphs
with FSF's address to prevent that.
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Move most of the set_dflt_pwr_limit() function to acpi.c and make it
return the pwr_limit value instead of setting directly. Also rename
it to iwl_acpi_get_pwr_limit().
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
The iwl_get_bios_mcc() function was in the iwl-nvm-parse.c file, but
it has nothing to do with the NVM. Move it to fw/acpi.c and rename it
to iwl_acpi_get_mcc().
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
The way iwl_get_bios_mcc() gets the WiFi package and checks for its
integrity is almost identical to the new iwl_acpi_get_wifi_pkg()
function. Instead of having duplicate code, convert it to use the
common code.
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Instead of finding the wifi package with its own code, we can reuse
the new iwl_acpi_get_wifi_pkg() function when reading the default
power limit from SPLC.
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Move this function to acpi.c, renaming it to iwl_acpi_get_wifi_pkg(),
because it can also be used with other methods (i.e. SPLC and WRDD).
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
The ACPI table size definitions were spread around the different files
that used them. Move them all to a common place.
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
