sravan/system76-coreboot
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

wifi: Add support for per-platform antenna gain

Browse Source 
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

52
src/drivers/wifi/generic/acpi.c
View File

@@ -42,6 +42,13 @@ static const uint8_t *wgds_fetch_set(struct geo_profile *wgds, size_t set_num)
return wgds_table + (wgds->bands_count * set_num);
}
static const uint8_t *ppag_fetch_set(struct gain_profile *ppag, size_t set_num)
{
const uint8_t *ppag_table = &ppag->ppag_table[0];
return ppag_table + (ppag->bands_count * set_num);
}
static void sar_emit_wrds(const struct sar_profile *sar)
{
int i;
@@ -216,6 +223,50 @@ static void sar_emit_wgds(struct geo_profile *wgds)
acpigen_write_package_end();
}
static void sar_emit_ppag(struct gain_profile *ppag)
{
int i;
size_t package_size, set_num;
const uint8_t *set;
if (ppag == NULL)
return;
/*
* Name ("PPAG", Package () {
* Revision,
* Package () {
* Domain Type, // 0x7:WiFi
* PPAG Mode, // Defines the mode of ANT_gain control to be used
* ANT_gain Table Chain A // Defines the ANT_gain in dBi for chain A
* ANT_gain Table Chain B // Defines the ANT_gain in dBi for chain B
* }
* })
*/
if (ppag->revision > MAX_ANT_GAINS_REVISION) {
printk(BIOS_ERR, "Invalid PPAG revision: %d\n", ppag->revision);
return;
}
package_size = 1 + 1 + ppag->chains_count * ppag->bands_count;
acpigen_write_name("PPAG");
acpigen_write_package(2);
acpigen_write_dword(ppag->revision);
acpigen_write_package(package_size);
acpigen_write_dword(DOMAIN_TYPE_WIFI);
acpigen_write_dword(ppag->mode);
for (set_num = 0; set_num < ppag->chains_count; set_num++) {
set = ppag_fetch_set(ppag, set_num);
for (i = 0; i < ppag->bands_count; i++)
acpigen_write_byte(set[i]);
}
acpigen_write_package_end();
acpigen_write_package_end();
}
static void emit_sar_acpi_structures(const struct device *dev)
{
union wifi_sar_limits sar_limits;
@@ -236,6 +287,7 @@ static void emit_sar_acpi_structures(const struct device *dev)
sar_emit_wrds(sar_limits.sar);
sar_emit_ewrd(sar_limits.sar);
sar_emit_wgds(sar_limits.wgds);
sar_emit_ppag(sar_limits.ppag);
free(sar_limits.sar);
}