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wifi: Add support for per-platform antenna gain

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Add support for the PPAG ACPI BIOS configuration table as per the
connectivity document:
559910_Intel_Connectivity_Platforms_BIOS_Guidelines_Rev6_4.pdf

BUG=b:193665559
TEST=Generated SAR file with the PPAG related configuration values and
verified that the SSDT has the PPAG ACPI table.

Change-Id: Ie8d25113feeeb4a4242cfd7d72a5091d2d5fb389
Signed-off-by: Sugnan Prabhu S <sugnan.prabhu.s@intel.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/57060
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
This commit is contained in:
Sugnan Prabhu S
2021-08-31 07:11:35 +05:30
committed by Tim Wawrzynczak
parent fcb4f2d77e
commit d1fc832c52
3 changed files with 90 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

27
src/vendorcode/google/chromeos/sar.c
View File

@ -68,6 +68,14 @@ static int wgds_table_size(const struct geo_profile *geo)
return sizeof(struct geo_profile) + (geo->chains_count * geo->bands_count);
}
static int gain_table_size(const struct gain_profile *gain)
{
if (gain == NULL)
return 0;
return sizeof(struct gain_profile) + (gain->chains_count * gain->bands_count);
}
static bool valid_legacy_length(size_t bin_len)
{
if (bin_len == LEGACY_SAR_WGDS_BIN_SIZE)
@ -116,6 +124,7 @@ static int fill_wifi_sar_limits(union wifi_sar_limits *sar_limits, const uint8_t
expected_sar_bin_size = header_size;
expected_sar_bin_size += sar_table_size(sar_limits->sar);
expected_sar_bin_size += wgds_table_size(sar_limits->wgds);
expected_sar_bin_size += gain_table_size(sar_limits->ppag);
if (sar_bin_size != expected_sar_bin_size) {
printk(BIOS_ERR, "ERROR: Invalid SAR size, expected: %ld, obtained: %ld\n",
@ -178,6 +187,7 @@ static int fill_wifi_sar_limits_legacy(union wifi_sar_limits *sar_limits,
* Offsets
* [SAR_REVISION,DSAR_SET_COUNT,CHAINS_COUNT,SUBBANDS_COUNT <WRDD>[EWRD]]
* [WGDS_REVISION,CHAINS_COUNT,SUBBANDS_COUNT<WGDS_DATA>]
* [PPAG_REVISION,MODE,CHAINS_COUNT,SUBBANDS_COUNT<PPAG_DATA>]
*
* The configuration data will always have the revision added in the file for each of the
* block, based on the revision number and validity, size of the specific block will be
@ -195,6 +205,23 @@ static int fill_wifi_sar_limits_legacy(union wifi_sar_limits *sar_limits,
* [GROUP#0] is for FCC
* [GROUP#1] is for Europe/Japan
* [GROUP#2] is for ROW
*
* [PPAG_DATA] = [ANT_gain Table Chain A] [ANT_gain Table Chain A]
*
* [ANT_gain Table] =
* Supported by Revision 0, 1 and 2
* [Antenna gain used for 2400MHz frequency]
* [Antenna gain used for 5150-5350MHz frequency]
* [Antenna gain used for 5350-5470MHz frequency]
* [Antenna gain used for 5470-5725MHz frequency]
* [Antenna gain used for 5725-5945MHz frequency]
* Supported by Revision 1 and 2
* [Antenna gain used for 5945-6165MHz frequency]
* [Antenna gain used for 6165-6405MHz frequency]
* [Antenna gain used for 6405-6525MHz frequency]
* [Antenna gain used for 6525-6705MHz frequency]
* [Antenna gain used for 6705-6865MHz frequency]
* [Antenna gain used for 6865-7105MHz frequency]
*/
int get_wifi_sar_limits(union wifi_sar_limits *sar_limits)
{