From fb1c40c225cbc413d82c872dd8c8af3469b2b921 Mon Sep 17 00:00:00 2001
From: Robert Marko <robimarko@gmail.com>
Date: Fri, 16 Dec 2022 17:17:52 +0100
Subject: [PATCH] ath11k: support setting FW memory mode via DT
ath11k is really memory intensive for devices with less that 1GB of RAM,
so lets allow saving a significant amount of memory by setting the FW to
Mode-1 via DTS for devices that need it.
However the drawback is reduced number of VDEV-s and peers which is a
reasonable tradeoff.
Mode-2 allows for further reduction, but it has further restrictions.
While we are here, lets add a print to be able to easily determine what
FW memory mode is being used.
Signed-off-by: Robert Marko <robimarko@gmail.com>
---
drivers/net/wireless/ath/ath11k/core.c | 28 ++++++++++++++++++++++++--
1 file changed, 26 insertions(+), 2 deletions(-)
--- a/drivers/net/wireless/ath/ath11k/core.c
+++ b/drivers/net/wireless/ath/ath11k/core.c
@@ -36,7 +36,7 @@ bool ath11k_ftm_mode;
module_param_named(ftm_mode, ath11k_ftm_mode, bool, 0444);
MODULE_PARM_DESC(ftm_mode, "Boots up in factory test mode");
-static const struct ath11k_hw_params ath11k_hw_params[] = {
+static struct ath11k_hw_params ath11k_hw_params[] = {
{
.hw_rev = ATH11K_HW_IPQ8074,
.name = "ipq8074 hw2.0",
@@ -2040,7 +2040,8 @@ static void ath11k_core_reset(struct wor
static int ath11k_init_hw_params(struct ath11k_base *ab)
{
const struct ath11k_hw_params *hw_params = NULL;
- int i;
+ u32 fw_mem_mode;
+ int i, ret;
for (i = 0; i < ARRAY_SIZE(ath11k_hw_params); i++) {
hw_params = &ath11k_hw_params[i];
@@ -2056,7 +2057,31 @@ static int ath11k_init_hw_params(struct
ab->hw_params = *hw_params;
+ ret = of_property_read_u32(ab->dev->of_node,
+ "qcom,ath11k-fw-memory-mode",
+ &fw_mem_mode);
+ if (!ret) {
+ if (fw_mem_mode == 0) {
+ ab->hw_params.fw_mem_mode = 0;
+ ab->hw_params.num_vdevs = 16 + 1;
+ ab->hw_params.num_peers = 512;
+ }
+ else if (fw_mem_mode == 1) {
+ ab->hw_params.fw_mem_mode = 1;
+ ab->hw_params.num_vdevs = 8;
+ ab->hw_params.num_peers = 128;
+ } else if (fw_mem_mode == 2) {
+ ab->hw_params.fw_mem_mode = 2;
+ ab->hw_params.num_vdevs = 8;
+ ab->hw_params.num_peers = 128;
+ ab->hw_params.coldboot_cal_mm = false;
+ ab->hw_params.coldboot_cal_ftm = false;
+ } else
+ ath11k_info(ab, "Unsupported FW memory mode: %u\n", fw_mem_mode);
+ }
+
ath11k_info(ab, "%s\n", ab->hw_params.name);
+ ath11k_info(ab, "FW memory mode: %d\n", ab->hw_params.fw_mem_mode);
return 0;
}