diff mbox series

[v3,1/4] wifi: ath12k: Add support for obtaining the buffer type ACPI function bitmap

Message ID 20241023024551.18966-2-quic_lingbok@quicinc.com (mailing list archive)
State Deferred
Delegated to: Jeff Johnson
Headers show
Series wifi: ath12k: Add new features to ACPI | expand

Commit Message

Lingbo Kong Oct. 23, 2024, 2:45 a.m. UTC 
Currently, ath12k does not support obtaining the buffer type ACPI function
bitmap.

To solve this issue, change the code to support obtaining the buffer type
ACPI function bitmap.

This patch will not affect QCN9274, because only WCN7850 supports ACPI.

Tested-on: WCN7850 hw2.0 PCI WLAN.HMT.1.0.c5-00481-QCAHMTSWPL_V1.0_V2.0_SILICONZ-3

Signed-off-by: Lingbo Kong <quic_lingbok@quicinc.com>
Acked-by: Jeff Johnson <quic_jjohnson@quicinc.com>
---
v3:
no change

v2:
no change

 drivers/net/wireless/ath/ath12k/acpi.c | 16 +++++++++++++++-
 drivers/net/wireless/ath/ath12k/acpi.h |  3 +++
 2 files changed, 18 insertions(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/drivers/net/wireless/ath/ath12k/acpi.c b/drivers/net/wireless/ath/ath12k/acpi.c
index 0555d35aab47..d83f7e58fb7a 100644
--- a/drivers/net/wireless/ath/ath12k/acpi.c
+++ b/drivers/net/wireless/ath/ath12k/acpi.c
@@ -12,7 +12,7 @@  static int ath12k_acpi_dsm_get_data(struct ath12k_base *ab, int func)
 {
 	union acpi_object *obj;
 	acpi_handle root_handle;
-	int ret;
+	int ret, i;
 
 	root_handle = ACPI_HANDLE(ab->dev);
 	if (!root_handle) {
@@ -32,6 +32,20 @@  static int ath12k_acpi_dsm_get_data(struct ath12k_base *ab, int func)
 		ab->acpi.func_bit = obj->integer.value;
 	} else if (obj->type == ACPI_TYPE_BUFFER) {
 		switch (func) {
+		case ATH12K_ACPI_DSM_FUNC_SUPPORT_FUNCS:
+			if (obj->buffer.length < ATH12K_ACPI_DSM_FUNC_MIN_BITMAP_SIZE ||
+			    obj->buffer.length > ATH12K_ACPI_DSM_FUNC_MAX_BITMAP_SIZE) {
+				ath12k_warn(ab, "invalid ACPI DSM func size: %d\n",
+					    obj->buffer.length);
+				ret = -EINVAL;
+				goto out;
+			}
+
+			ab->acpi.func_bit = 0;
+			for (i = 0; i < obj->buffer.length; i++)
+				ab->acpi.func_bit += obj->buffer.pointer[i] << (i * 8);
+
+			break;
 		case ATH12K_ACPI_DSM_FUNC_TAS_CFG:
 			if (obj->buffer.length != ATH12K_ACPI_DSM_TAS_CFG_SIZE) {
 				ath12k_warn(ab, "invalid ACPI DSM TAS config size: %d\n",
diff --git a/drivers/net/wireless/ath/ath12k/acpi.h b/drivers/net/wireless/ath/ath12k/acpi.h
index 39e003d86a48..7ec7a2e72e40 100644
--- a/drivers/net/wireless/ath/ath12k/acpi.h
+++ b/drivers/net/wireless/ath/ath12k/acpi.h
@@ -48,6 +48,9 @@ 
 #define ATH12K_ACPI_DSM_BAND_EDGE_DATA_SIZE		100
 #define ATH12K_ACPI_DSM_TAS_CFG_SIZE			108
 
+#define ATH12K_ACPI_DSM_FUNC_MIN_BITMAP_SIZE	1
+#define ATH12K_ACPI_DSM_FUNC_MAX_BITMAP_SIZE	4
+
 #define ATH12K_ACPI_DSM_GEO_OFFSET_DATA_SIZE (ATH12K_ACPI_GEO_OFFSET_DATA_OFFSET + \
 					      ATH12K_ACPI_BIOS_SAR_GEO_OFFSET_LEN)
 #define ATH12K_ACPI_DSM_BIOS_SAR_DATA_SIZE (ATH12K_ACPI_POWER_LIMIT_DATA_OFFSET + \