Through reading ACPI table, implement Time-Average-SAR(TAS), BIOS SAR,
configuration of CCA threshold and band edge channel power functionalities.
v7:
1.adjust the length of line
2.add cpu_to_le32()
v6:
1.remove code that is not called
v5:
1.rebase to the latest tag
v4:
1.revise commit log using imperative voice
2.delete guid_is_null()
v3:
1.remove unnecessary cpu_to_le32()
2.adjust the order of the macros
3.apply jeff's advice
v2:
1.put <linux/acpi.h> in the include guard
Lingbo Kong (4):
wifi: ath12k: add TAS capability for WCN7850
wifi: ath12k: add BIOS SAR capability for WCN7850
wifi: ath12k: add adjust configuration of CCA threshold value for
WCN7850
wifi: ath12k: add set band edge channel power for WCN7850
drivers/net/wireless/ath/ath12k/Makefile | 3 +-
drivers/net/wireless/ath/ath12k/acpi.c | 364 +++++++++++++++++++++++
drivers/net/wireless/ath/ath12k/acpi.h | 60 ++++
drivers/net/wireless/ath/ath12k/core.c | 6 +
drivers/net/wireless/ath/ath12k/core.h | 13 +
drivers/net/wireless/ath/ath12k/hw.c | 10 +
drivers/net/wireless/ath/ath12k/hw.h | 4 +-
drivers/net/wireless/ath/ath12k/pci.c | 6 +
drivers/net/wireless/ath/ath12k/wmi.c | 277 +++++++++++++++++
drivers/net/wireless/ath/ath12k/wmi.h | 45 ++-
10 files changed, 785 insertions(+), 3 deletions(-)
create mode 100644 drivers/net/wireless/ath/ath12k/acpi.c
create mode 100644 drivers/net/wireless/ath/ath12k/acpi.h
base-commit: 7cd4c7979139b8d5a61226af1fe2548887364712
--
2.34.1
Currently, ath12k does not have the ability to set band edge channel power
for WCN7850. In order to support this, ath12k gets band edge channel power
table in ath12k_acpi_dsm_get_data() function and sets pdev_id and
param_type_id, then finally sends these data and
WMI_PDEV_SET_BIOS_INTERFACE_CMDID to firmware to set band edge channel
power.
Tested-on: WCN7850 hw2.0 PCI WLAN.HMT.1.0-03427-QCAHMTSWPL_V1.0_V2.0_SILICONZ-1.15378.4
Signed-off-by: Lingbo Kong <[email protected]>
---
v7:
1.adjust the length of line
v6:
1.no change
v5:
1.rebase to the latest tag
v4:
1.revise commit log using imperative voice
v3:
1.remove unnecessary cpu_to_le32()
2.adjust the order of the macros
v2:
no change
drivers/net/wireless/ath/ath12k/acpi.c | 31 ++++++++++++++++++
drivers/net/wireless/ath/ath12k/acpi.h | 5 +++
drivers/net/wireless/ath/ath12k/core.h | 1 +
drivers/net/wireless/ath/ath12k/wmi.c | 44 ++++++++++++++++++++++++++
drivers/net/wireless/ath/ath12k/wmi.h | 2 ++
5 files changed, 83 insertions(+)
diff --git a/drivers/net/wireless/ath/ath12k/acpi.c b/drivers/net/wireless/ath/ath12k/acpi.c
index cb0850ae110a..bcffd925e750 100644
--- a/drivers/net/wireless/ath/ath12k/acpi.c
+++ b/drivers/net/wireless/ath/ath12k/acpi.c
@@ -82,6 +82,16 @@ static int ath12k_acpi_dsm_get_data(struct ath12k_base *ab, int func)
memcpy(&ab->acdata->cca_data, obj->buffer.pointer,
obj->buffer.length);
break;
+ case ATH12K_ACPI_DSM_FUNC_INDEX_BAND_EDGE:
+ if (obj->buffer.length != ATH12K_ACPI_DSM_BAND_EDGE_DATA_SIZE) {
+ ath12k_err(ab, "Invalid BAND EDGE data size %d\n",
+ obj->buffer.length);
+ ret = -EINVAL;
+ goto out;
+ }
+ memcpy(&ab->acdata->band_edge_power, obj->buffer.pointer,
+ obj->buffer.length);
+ break;
}
} else {
ath12k_err(ab,
@@ -308,6 +318,27 @@ int ath12k_get_acpi_all_data(struct ath12k_base *ab)
}
}
+ if (ATH12K_ACPI_FUNC_BIT_VALID(ab->acdata,
+ ATH12K_ACPI_FUNC_BIT_BAND_EDGE_CHAN_POWER)) {
+ ret = ath12k_acpi_dsm_get_data(ab,
+ ATH12K_ACPI_DSM_FUNC_INDEX_BAND_EDGE);
+ if (ret) {
+ ath12k_err(ab, "fail to get band edge channel power %d\n", ret);
+ goto err_free_acdata;
+ }
+
+ if (ab->acdata->band_edge_power[0] == ATH12K_ACPI_BAND_EDGE_VERSION &&
+ ab->acdata->band_edge_power[1] == ATH12K_ACPI_BAND_EDGE_ENABLE_FLAG) {
+ ret = ath12k_wmi_pdev_set_band_edge_power(ab);
+ if (ret) {
+ ath12k_err(ab,
+ "set band edge channel power failed %d\n",
+ ret);
+ goto err_free_acdata;
+ }
+ }
+ }
+
status = acpi_install_notify_handler(ACPI_HANDLE(ab->dev),
ACPI_DEVICE_NOTIFY,
acpi_dsm_notify, ab);
diff --git a/drivers/net/wireless/ath/ath12k/acpi.h b/drivers/net/wireless/ath/ath12k/acpi.h
index f9ad4d573b78..a419c47046ce 100644
--- a/drivers/net/wireless/ath/ath12k/acpi.h
+++ b/drivers/net/wireless/ath/ath12k/acpi.h
@@ -14,12 +14,14 @@
#define ATH12K_ACPI_DSM_FUNC_INDEX_CCA 6
#define ATH12K_ACPI_DSM_FUNC_TAS_CFG 8
#define ATH12K_ACPI_DSM_FUNC_TAS_DATA 9
+#define ATH12K_ACPI_DSM_FUNC_INDEX_BAND_EDGE 10
#define ATH12K_ACPI_FUNC_BIT_BIOS_SAR BIT(3)
#define ATH12K_ACPI_FUNC_BIT_GEO_OFFSET BIT(4)
#define ATH12K_ACPI_FUNC_BIT_CCA BIT(5)
#define ATH12K_ACPI_FUNC_BIT_TAS_CFG BIT(7)
#define ATH12K_ACPI_FUNC_BIT_TAS_DATA BIT(8)
+#define ATH12K_ACPI_FUNC_BIT_BAND_EDGE_CHAN_POWER BIT(9)
#define ATH12K_ACPI_NOTIFY_EVENT 0x86
#define ATH12K_ACPI_FUNC_BIT_VALID(_acdata, _func) (((_acdata)->func_bit) & (_func))
@@ -30,6 +32,8 @@
#define ATH12K_ACPI_POWER_LIMIT_ENABLE_FLAG 0x1
#define ATH12K_ACPI_CCA_THR_VERSION 0x1
#define ATH12K_ACPI_CCA_THR_ENABLE_FLAG 0x1
+#define ATH12K_ACPI_BAND_EDGE_VERSION 0x1
+#define ATH12K_ACPI_BAND_EDGE_ENABLE_FLAG 0x1
#define ATH12K_ACPI_GEO_OFFSET_DATA_OFFSET 1
#define ATH12K_ACPI_DBS_BACKOFF_DATA_OFFSET 2
@@ -41,6 +45,7 @@
#define ATH12K_ACPI_CCA_THR_OFFSET_LEN 36
#define ATH12K_ACPI_DSM_TAS_DATA_SIZE 69
+#define ATH12K_ACPI_DSM_BAND_EDGE_DATA_SIZE 100
#define ATH12K_ACPI_DSM_TAS_CFG_SIZE 108
#define ATH12K_ACPI_DSM_GEO_OFFSET_DATA_SIZE (ATH12K_ACPI_GEO_OFFSET_DATA_OFFSET + \
diff --git a/drivers/net/wireless/ath/ath12k/core.h b/drivers/net/wireless/ath/ath12k/core.h
index 4b663577c2b9..350cff3c30e3 100644
--- a/drivers/net/wireless/ath/ath12k/core.h
+++ b/drivers/net/wireless/ath/ath12k/core.h
@@ -803,6 +803,7 @@ struct ath12k_base {
u8 bios_sar_data[ATH12K_ACPI_DSM_BIOS_SAR_DATA_SIZE];
u8 geo_offset_data[ATH12K_ACPI_DSM_GEO_OFFSET_DATA_SIZE];
u8 cca_data[ATH12K_ACPI_DSM_CCA_DATA_SIZE];
+ u8 band_edge_power[ATH12K_ACPI_DSM_BAND_EDGE_DATA_SIZE];
} *acdata;
/* must be last */
diff --git a/drivers/net/wireless/ath/ath12k/wmi.c b/drivers/net/wireless/ath/ath12k/wmi.c
index 0d9101f9643a..06f68dd2542c 100644
--- a/drivers/net/wireless/ath/ath12k/wmi.c
+++ b/drivers/net/wireless/ath/ath12k/wmi.c
@@ -7205,3 +7205,47 @@ int ath12k_wmi_pdev_set_cca_thr_table_param(struct ath12k_base *ab)
}
return ret;
}
+
+int ath12k_wmi_pdev_set_band_edge_power(struct ath12k_base *ab)
+{
+ struct ath12k_wmi_base *wmi_ab = &ab->wmi_ab;
+ struct wmi_pdev_set_bios_interface_cmd *cmd;
+ struct wmi_tlv *tlv;
+ struct sk_buff *skb;
+ int ret;
+ u8 *buf_ptr;
+ u32 len, len_aligned;
+ u8 *pchan_table = ab->acdata->band_edge_power;
+
+ len_aligned = roundup(ATH12K_ACPI_DSM_BAND_EDGE_DATA_SIZE, sizeof(u32));
+ len = sizeof(*cmd) + TLV_HDR_SIZE + len_aligned;
+
+ skb = ath12k_wmi_alloc_skb(wmi_ab, len);
+ if (!skb)
+ return -ENOMEM;
+
+ cmd = (struct wmi_pdev_set_bios_interface_cmd *)skb->data;
+ cmd->tlv_header = ath12k_wmi_tlv_cmd_hdr(WMI_TAG_PDEV_SET_BIOS_INTERFACE_CMD,
+ sizeof(*cmd));
+ cmd->pdev_id = cpu_to_le32(WMI_PDEV_ID_SOC);
+ cmd->param_type_id = cpu_to_le32(WMI_BIOS_PARAM_TYPE_BANDEDGE_CTL_POWER);
+ cmd->length = cpu_to_le32(ATH12K_ACPI_DSM_BAND_EDGE_DATA_SIZE);
+
+ buf_ptr = skb->data + sizeof(*cmd);
+ tlv = (struct wmi_tlv *)buf_ptr;
+ tlv->header = ath12k_wmi_tlv_hdr(WMI_TAG_ARRAY_BYTE, len_aligned);
+ buf_ptr += TLV_HDR_SIZE;
+ memcpy(buf_ptr, pchan_table, ATH12K_ACPI_DSM_BAND_EDGE_DATA_SIZE);
+
+ ret = ath12k_wmi_cmd_send(&wmi_ab->wmi[0],
+ skb,
+ WMI_PDEV_SET_BIOS_INTERFACE_CMDID);
+ if (ret) {
+ ath12k_warn(ab,
+ "failed to send WMI_PDEV_SET_BIOS_INTERFACE_CMDID %d\n",
+ ret);
+ dev_kfree_skb(skb);
+ }
+
+ return ret;
+}
diff --git a/drivers/net/wireless/ath/ath12k/wmi.h b/drivers/net/wireless/ath/ath12k/wmi.h
index 8c6b16a572ee..fa03c0f507d4 100644
--- a/drivers/net/wireless/ath/ath12k/wmi.h
+++ b/drivers/net/wireless/ath/ath12k/wmi.h
@@ -4811,6 +4811,7 @@ enum bios_param_type {
WMI_BIOS_PARAM_CCA_THRESHOLD_TYPE = 0,
WMI_BIOS_PARAM_TAS_CONFIG_TYPE = 1,
WMI_BIOS_PARAM_TAS_DATA_TYPE = 2,
+ WMI_BIOS_PARAM_TYPE_BANDEDGE_CTL_POWER = 3,
WMI_BIOS_PARAM_TYPE_MAX,
};
@@ -4982,4 +4983,5 @@ int ath12k_wmi_pdev_set_bios_sar_table_param(struct ath12k_base *ab,
int ath12k_wmi_pdev_set_bios_geo_table_param(struct ath12k_base *ab,
u8 *pgeo_table);
int ath12k_wmi_pdev_set_cca_thr_table_param(struct ath12k_base *ab);
+int ath12k_wmi_pdev_set_band_edge_power(struct ath12k_base *ab);
#endif
--
2.34.1
Currently, ath12k does not have the ability to adjust CCA threshold values
to meet the regulatory requirements. In order to support this, ath12k gets
CCA threshold configuration in ath12k_acpi_dsm_get_data() function, then
sets pdev_id and param_type_id and finally sends these data to firmware to
implement the adjustment of the CCA threshold value.
Tested-on: WCN7850 hw2.0 PCI WLAN.HMT.1.0-03427-QCAHMTSWPL_V1.0_V2.0_SILICONZ-1.15378.4
Signed-off-by: Lingbo Kong <[email protected]>
---
v7:
1.adjust the length of line
2.add cpu_to_le32()
v6:
1.no change
v5:
1.rebase to the latest tag
v4:
1.revise commit log using imperative voice
v3:
1.remove unnecessary cpu_to_le32()
2.adjust the order of the macros
3.apply jeff's advice
v2:
no change
drivers/net/wireless/ath/ath12k/acpi.c | 31 ++++++++++++++++++
drivers/net/wireless/ath/ath12k/acpi.h | 8 +++++
drivers/net/wireless/ath/ath12k/core.h | 1 +
drivers/net/wireless/ath/ath12k/wmi.c | 44 ++++++++++++++++++++++++++
drivers/net/wireless/ath/ath12k/wmi.h | 6 ++--
5 files changed, 88 insertions(+), 2 deletions(-)
diff --git a/drivers/net/wireless/ath/ath12k/acpi.c b/drivers/net/wireless/ath/ath12k/acpi.c
index 56073557b0f3..cb0850ae110a 100644
--- a/drivers/net/wireless/ath/ath12k/acpi.c
+++ b/drivers/net/wireless/ath/ath12k/acpi.c
@@ -72,6 +72,16 @@ static int ath12k_acpi_dsm_get_data(struct ath12k_base *ab, int func)
memcpy(&ab->acdata->geo_offset_data, obj->buffer.pointer,
obj->buffer.length);
break;
+ case ATH12K_ACPI_DSM_FUNC_INDEX_CCA:
+ if (obj->buffer.length != ATH12K_ACPI_DSM_CCA_DATA_SIZE) {
+ ath12k_err(ab, "Invalid CCA data size %d\n",
+ obj->buffer.length);
+ ret = -EINVAL;
+ goto out;
+ }
+ memcpy(&ab->acdata->cca_data, obj->buffer.pointer,
+ obj->buffer.length);
+ break;
}
} else {
ath12k_err(ab,
@@ -277,6 +287,27 @@ int ath12k_get_acpi_all_data(struct ath12k_base *ab)
goto err_free_acdata;
}
+ if (ATH12K_ACPI_FUNC_BIT_VALID(ab->acdata, ATH12K_ACPI_FUNC_BIT_CCA)) {
+ ret = ath12k_acpi_dsm_get_data(ab,
+ ATH12K_ACPI_DSM_FUNC_INDEX_CCA);
+ if (ret) {
+ ath12k_err(ab,
+ "failed to get cca threshold configuration %d\n",
+ ret);
+ goto err_free_acdata;
+ }
+
+ if (ab->acdata->cca_data[0] == ATH12K_ACPI_CCA_THR_VERSION &&
+ ab->acdata->cca_data[ATH12K_ACPI_CCA_THR_OFFSET_DATA_OFFSET] ==
+ ATH12K_ACPI_CCA_THR_ENABLE_FLAG) {
+ ret = ath12k_wmi_pdev_set_cca_thr_table_param(ab);
+ if (ret) {
+ ath12k_err(ab, "set cca threshold failed %d\n", ret);
+ goto err_free_acdata;
+ }
+ }
+ }
+
status = acpi_install_notify_handler(ACPI_HANDLE(ab->dev),
ACPI_DEVICE_NOTIFY,
acpi_dsm_notify, ab);
diff --git a/drivers/net/wireless/ath/ath12k/acpi.h b/drivers/net/wireless/ath/ath12k/acpi.h
index 2146855dffae..f9ad4d573b78 100644
--- a/drivers/net/wireless/ath/ath12k/acpi.h
+++ b/drivers/net/wireless/ath/ath12k/acpi.h
@@ -11,11 +11,13 @@
#define ATH12K_ACPI_DSM_FUNC_SUPPORT_FUNCS 0
#define ATH12K_ACPI_DSM_FUNC_BIOS_SAR 4
#define ATH12K_ACPI_DSM_FUNC_GEO_OFFSET 5
+#define ATH12K_ACPI_DSM_FUNC_INDEX_CCA 6
#define ATH12K_ACPI_DSM_FUNC_TAS_CFG 8
#define ATH12K_ACPI_DSM_FUNC_TAS_DATA 9
#define ATH12K_ACPI_FUNC_BIT_BIOS_SAR BIT(3)
#define ATH12K_ACPI_FUNC_BIT_GEO_OFFSET BIT(4)
+#define ATH12K_ACPI_FUNC_BIT_CCA BIT(5)
#define ATH12K_ACPI_FUNC_BIT_TAS_CFG BIT(7)
#define ATH12K_ACPI_FUNC_BIT_TAS_DATA BIT(8)
@@ -26,13 +28,17 @@
#define ATH12K_ACPI_TAS_DATA_ENABLE 0x1
#define ATH12K_ACPI_POWER_LIMIT_VERSION 0x1
#define ATH12K_ACPI_POWER_LIMIT_ENABLE_FLAG 0x1
+#define ATH12K_ACPI_CCA_THR_VERSION 0x1
+#define ATH12K_ACPI_CCA_THR_ENABLE_FLAG 0x1
#define ATH12K_ACPI_GEO_OFFSET_DATA_OFFSET 1
#define ATH12K_ACPI_DBS_BACKOFF_DATA_OFFSET 2
+#define ATH12K_ACPI_CCA_THR_OFFSET_DATA_OFFSET 5
#define ATH12K_ACPI_BIOS_SAR_DBS_BACKOFF_LEN 10
#define ATH12K_ACPI_POWER_LIMIT_DATA_OFFSET 12
#define ATH12K_ACPI_BIOS_SAR_GEO_OFFSET_LEN 18
#define ATH12K_ACPI_BIOS_SAR_TABLE_LEN 22
+#define ATH12K_ACPI_CCA_THR_OFFSET_LEN 36
#define ATH12K_ACPI_DSM_TAS_DATA_SIZE 69
#define ATH12K_ACPI_DSM_TAS_CFG_SIZE 108
@@ -41,6 +47,8 @@
ATH12K_ACPI_BIOS_SAR_GEO_OFFSET_LEN)
#define ATH12K_ACPI_DSM_BIOS_SAR_DATA_SIZE (ATH12K_ACPI_POWER_LIMIT_DATA_OFFSET + \
ATH12K_ACPI_BIOS_SAR_TABLE_LEN)
+#define ATH12K_ACPI_DSM_CCA_DATA_SIZE (ATH12K_ACPI_CCA_THR_OFFSET_DATA_OFFSET + \
+ ATH12K_ACPI_CCA_THR_OFFSET_LEN)
int ath12k_get_acpi_all_data(struct ath12k_base *ab);
void acpi_dsm_notify(acpi_handle handle, u32 event, void *data);
diff --git a/drivers/net/wireless/ath/ath12k/core.h b/drivers/net/wireless/ath/ath12k/core.h
index e9823e063fb6..4b663577c2b9 100644
--- a/drivers/net/wireless/ath/ath12k/core.h
+++ b/drivers/net/wireless/ath/ath12k/core.h
@@ -802,6 +802,7 @@ struct ath12k_base {
u8 tas_sar_power_table[ATH12K_ACPI_DSM_TAS_DATA_SIZE];
u8 bios_sar_data[ATH12K_ACPI_DSM_BIOS_SAR_DATA_SIZE];
u8 geo_offset_data[ATH12K_ACPI_DSM_GEO_OFFSET_DATA_SIZE];
+ u8 cca_data[ATH12K_ACPI_DSM_CCA_DATA_SIZE];
} *acdata;
/* must be last */
diff --git a/drivers/net/wireless/ath/ath12k/wmi.c b/drivers/net/wireless/ath/ath12k/wmi.c
index 09e0a27612ab..0d9101f9643a 100644
--- a/drivers/net/wireless/ath/ath12k/wmi.c
+++ b/drivers/net/wireless/ath/ath12k/wmi.c
@@ -7161,3 +7161,47 @@ int ath12k_wmi_pdev_set_bios_geo_table_param(struct ath12k_base *ab,
return ret;
}
+
+int ath12k_wmi_pdev_set_cca_thr_table_param(struct ath12k_base *ab)
+{
+ struct ath12k_wmi_base *wmi_ab = &ab->wmi_ab;
+ struct wmi_pdev_set_bios_interface_cmd *cmd;
+ struct wmi_tlv *tlv;
+ struct sk_buff *skb;
+ int ret;
+ u8 *pcca_table = ab->acdata->cca_data;
+ u8 *buf_ptr;
+ u32 len, cca_thr_len_aligned;
+ u8 *pcca_value = pcca_table + ATH12K_ACPI_CCA_THR_OFFSET_DATA_OFFSET;
+
+ cca_thr_len_aligned = roundup(ATH12K_ACPI_CCA_THR_OFFSET_LEN, sizeof(u32));
+ len = sizeof(*cmd) + TLV_HDR_SIZE + cca_thr_len_aligned;
+
+ skb = ath12k_wmi_alloc_skb(wmi_ab, len);
+ if (!skb)
+ return -ENOMEM;
+
+ cmd = (struct wmi_pdev_set_bios_interface_cmd *)skb->data;
+ cmd->tlv_header = ath12k_wmi_tlv_cmd_hdr(WMI_TAG_PDEV_SET_BIOS_INTERFACE_CMD,
+ sizeof(*cmd));
+ cmd->pdev_id = cpu_to_le32(WMI_PDEV_ID_SOC);
+ cmd->param_type_id = cpu_to_le32(WMI_BIOS_PARAM_CCA_THRESHOLD_TYPE);
+ cmd->length = cpu_to_le32(ATH12K_ACPI_CCA_THR_OFFSET_LEN);
+
+ buf_ptr = skb->data + sizeof(*cmd);
+ tlv = (struct wmi_tlv *)buf_ptr;
+ tlv->header = ath12k_wmi_tlv_hdr(WMI_TAG_ARRAY_BYTE, cca_thr_len_aligned);
+ buf_ptr += TLV_HDR_SIZE;
+ memcpy(buf_ptr, pcca_value, ATH12K_ACPI_CCA_THR_OFFSET_LEN);
+
+ ret = ath12k_wmi_cmd_send(&wmi_ab->wmi[0],
+ skb,
+ WMI_PDEV_SET_BIOS_INTERFACE_CMDID);
+ if (ret) {
+ ath12k_warn(ab,
+ "failed to send WMI_PDEV_SET_BIOS_INTERFACE_CMDID %d\n",
+ ret);
+ dev_kfree_skb(skb);
+ }
+ return ret;
+}
diff --git a/drivers/net/wireless/ath/ath12k/wmi.h b/drivers/net/wireless/ath/ath12k/wmi.h
index 677cb2e615e9..8c6b16a572ee 100644
--- a/drivers/net/wireless/ath/ath12k/wmi.h
+++ b/drivers/net/wireless/ath/ath12k/wmi.h
@@ -4808,8 +4808,9 @@ struct wmi_pdev_set_bios_interface_cmd {
} __packed;
enum bios_param_type {
- WMI_BIOS_PARAM_TAS_CONFIG_TYPE = 1,
- WMI_BIOS_PARAM_TAS_DATA_TYPE = 2,
+ WMI_BIOS_PARAM_CCA_THRESHOLD_TYPE = 0,
+ WMI_BIOS_PARAM_TAS_CONFIG_TYPE = 1,
+ WMI_BIOS_PARAM_TAS_DATA_TYPE = 2,
WMI_BIOS_PARAM_TYPE_MAX,
};
@@ -4980,4 +4981,5 @@ int ath12k_wmi_pdev_set_bios_sar_table_param(struct ath12k_base *ab,
u8 *psar_table);
int ath12k_wmi_pdev_set_bios_geo_table_param(struct ath12k_base *ab,
u8 *pgeo_table);
+int ath12k_wmi_pdev_set_cca_thr_table_param(struct ath12k_base *ab);
#endif
--
2.34.1
Currently, ath12k does not support BIOS SAR for WCN7850. In order to enable
BIOS SAR for WCN7850, ath12k gets BIOS SAR table and GEO offset table in
ath12k_acpi_dsm_get_data() function, then sets pdev_id, length of data, and
finally sends these data and WMI_PDEV_SET_BIOS_SAR_TABLE_CMDID and
WMI_PDEV_SET_BIOS_GEO_TABLE_CMDID to firmware to implement BIOS SAR during
the initialization phase. Besides, ath12k registers an ACPI event callback
so that ACPI can notify ath12k to get the updated BIOS SAR table and sends
it to firmware when the device state is changed.
Tested-on: WCN7850 hw2.0 PCI WLAN.HMT.1.0-03427-QCAHMTSWPL_V1.0_V2.0_SILICONZ-1.15378.4
Signed-off-by: Lingbo Kong <[email protected]>
---
v7:
1.adjust the length of line
v6:
1.no change
v5:
1.rebase to the latest tag
v4:
1.revise commit log using imperative voice
v3:
1.adjust the order of the macros
2.apply jeff's advice
3.remove unnecessary cpu_to_le32()
v2:
no change
drivers/net/wireless/ath/ath12k/acpi.c | 104 +++++++++++++++++++++++++
drivers/net/wireless/ath/ath12k/acpi.h | 18 +++++
drivers/net/wireless/ath/ath12k/core.h | 3 +
drivers/net/wireless/ath/ath12k/wmi.c | 101 ++++++++++++++++++++++++
drivers/net/wireless/ath/ath12k/wmi.h | 21 +++++
5 files changed, 247 insertions(+)
diff --git a/drivers/net/wireless/ath/ath12k/acpi.c b/drivers/net/wireless/ath/ath12k/acpi.c
index 816d3353a4d3..56073557b0f3 100644
--- a/drivers/net/wireless/ath/ath12k/acpi.c
+++ b/drivers/net/wireless/ath/ath12k/acpi.c
@@ -52,6 +52,26 @@ static int ath12k_acpi_dsm_get_data(struct ath12k_base *ab, int func)
memcpy(&ab->acdata->tas_sar_power_table, obj->buffer.pointer,
obj->buffer.length);
break;
+ case ATH12K_ACPI_DSM_FUNC_BIOS_SAR:
+ if (obj->buffer.length != ATH12K_ACPI_DSM_BIOS_SAR_DATA_SIZE) {
+ ath12k_err(ab, "Invalid BIOS SAR data size %d\n",
+ obj->buffer.length);
+ ret = -EINVAL;
+ goto out;
+ }
+ memcpy(&ab->acdata->bios_sar_data, obj->buffer.pointer,
+ obj->buffer.length);
+ break;
+ case ATH12K_ACPI_DSM_FUNC_GEO_OFFSET:
+ if (obj->buffer.length != ATH12K_ACPI_DSM_GEO_OFFSET_DATA_SIZE) {
+ ath12k_err(ab, "Invalid GEO OFFSET data size %d\n",
+ obj->buffer.length);
+ ret = -EINVAL;
+ goto out;
+ }
+ memcpy(&ab->acdata->geo_offset_data, obj->buffer.pointer,
+ obj->buffer.length);
+ break;
}
} else {
ath12k_err(ab,
@@ -84,6 +104,24 @@ static int ath12k_set_tas_power_limit_data(struct ath12k_base *ab)
return ret;
}
+static int ath12k_set_bios_sar_power_limit_data(struct ath12k_base *ab)
+{
+ int ret;
+
+ if (ab->acdata->bios_sar_data[0] == ATH12K_ACPI_POWER_LIMIT_VERSION &&
+ ab->acdata->bios_sar_data[1] == ATH12K_ACPI_POWER_LIMIT_ENABLE_FLAG) {
+ ret = ath12k_wmi_pdev_set_bios_sar_table_param(ab,
+ ab->acdata->bios_sar_data);
+ if (ret)
+ ath12k_err(ab, "failed to pass bios sar table %d\n", ret);
+ } else {
+ ath12k_err(ab, "the latest bios sar data is invalid\n");
+ ret = -EINVAL;
+ }
+
+ return ret;
+}
+
void acpi_dsm_notify(acpi_handle handle, u32 event, void *data)
{
int ret;
@@ -102,11 +140,46 @@ void acpi_dsm_notify(acpi_handle handle, u32 event, void *data)
if (ret)
return;
}
+
+ if (ab->acdata->acpi_bios_sar_enable) {
+ ret = ath12k_acpi_dsm_get_data(ab,
+ ATH12K_ACPI_DSM_FUNC_BIOS_SAR);
+ if (ret) {
+ ath12k_err(ab, "failed to update bios sar %d\n", ret);
+ return;
+ }
+
+ ret = ath12k_set_bios_sar_power_limit_data(ab);
+ if (ret)
+ return;
+ }
+
} else {
ath12k_err(ab, "unknown acpi notify %u\n", event);
}
}
+static int ath12k_pass_acpi_bios_sar_and_geo_to_fw(struct ath12k_base *ab)
+{
+ int ret;
+
+ ret = ath12k_wmi_pdev_set_bios_sar_table_param(ab,
+ ab->acdata->bios_sar_data);
+
+ if (ret) {
+ ath12k_err(ab, "failed to pass bios sar table to fw %d\n", ret);
+ return ret;
+ }
+
+ ret = ath12k_wmi_pdev_set_bios_geo_table_param(ab,
+ ab->acdata->geo_offset_data);
+
+ if (ret)
+ ath12k_err(ab, "failed to pass bios geo table to fw %d\n", ret);
+
+ return ret;
+}
+
static int ath12k_pass_acpi_cfg_and_data_to_fw(struct ath12k_base *ab)
{
int ret;
@@ -167,12 +240,43 @@ int ath12k_get_acpi_all_data(struct ath12k_base *ab)
ab->acdata->acpi_tas_enable = true;
}
+ if (ATH12K_ACPI_FUNC_BIT_VALID(ab->acdata, ATH12K_ACPI_FUNC_BIT_BIOS_SAR)) {
+ ret = ath12k_acpi_dsm_get_data(ab,
+ ATH12K_ACPI_DSM_FUNC_BIOS_SAR);
+ if (ret) {
+ ath12k_err(ab, "failed to get bios sar data %d\n", ret);
+ goto err_free_acdata;
+ }
+ }
+
+ if (ATH12K_ACPI_FUNC_BIT_VALID(ab->acdata, ATH12K_ACPI_FUNC_BIT_GEO_OFFSET)) {
+ ret = ath12k_acpi_dsm_get_data(ab,
+ ATH12K_ACPI_DSM_FUNC_GEO_OFFSET);
+ if (ret) {
+ ath12k_err(ab, "failed to get geo offset data %d\n", ret);
+ goto err_free_acdata;
+ }
+
+ if (ATH12K_ACPI_FUNC_BIT_VALID(ab->acdata,
+ ATH12K_ACPI_FUNC_BIT_BIOS_SAR) &&
+ ab->acdata->bios_sar_data[0] == ATH12K_ACPI_POWER_LIMIT_VERSION &&
+ ab->acdata->bios_sar_data[1] == ATH12K_ACPI_POWER_LIMIT_ENABLE_FLAG &&
+ !ab->acdata->acpi_tas_enable)
+ ab->acdata->acpi_bios_sar_enable = true;
+ }
+
if (ab->acdata->acpi_tas_enable) {
ret = ath12k_pass_acpi_cfg_and_data_to_fw(ab);
if (ret)
goto err_free_acdata;
}
+ if (ab->acdata->acpi_bios_sar_enable) {
+ ret = ath12k_pass_acpi_bios_sar_and_geo_to_fw(ab);
+ if (ret)
+ goto err_free_acdata;
+ }
+
status = acpi_install_notify_handler(ACPI_HANDLE(ab->dev),
ACPI_DEVICE_NOTIFY,
acpi_dsm_notify, ab);
diff --git a/drivers/net/wireless/ath/ath12k/acpi.h b/drivers/net/wireless/ath/ath12k/acpi.h
index 7d6a1113835e..2146855dffae 100644
--- a/drivers/net/wireless/ath/ath12k/acpi.h
+++ b/drivers/net/wireless/ath/ath12k/acpi.h
@@ -9,9 +9,13 @@
#include <linux/acpi.h>
#define ATH12K_ACPI_DSM_FUNC_SUPPORT_FUNCS 0
+#define ATH12K_ACPI_DSM_FUNC_BIOS_SAR 4
+#define ATH12K_ACPI_DSM_FUNC_GEO_OFFSET 5
#define ATH12K_ACPI_DSM_FUNC_TAS_CFG 8
#define ATH12K_ACPI_DSM_FUNC_TAS_DATA 9
+#define ATH12K_ACPI_FUNC_BIT_BIOS_SAR BIT(3)
+#define ATH12K_ACPI_FUNC_BIT_GEO_OFFSET BIT(4)
#define ATH12K_ACPI_FUNC_BIT_TAS_CFG BIT(7)
#define ATH12K_ACPI_FUNC_BIT_TAS_DATA BIT(8)
@@ -20,10 +24,24 @@
#define ATH12K_ACPI_TAS_DATA_VERSION 0x1
#define ATH12K_ACPI_TAS_DATA_ENABLE 0x1
+#define ATH12K_ACPI_POWER_LIMIT_VERSION 0x1
+#define ATH12K_ACPI_POWER_LIMIT_ENABLE_FLAG 0x1
+
+#define ATH12K_ACPI_GEO_OFFSET_DATA_OFFSET 1
+#define ATH12K_ACPI_DBS_BACKOFF_DATA_OFFSET 2
+#define ATH12K_ACPI_BIOS_SAR_DBS_BACKOFF_LEN 10
+#define ATH12K_ACPI_POWER_LIMIT_DATA_OFFSET 12
+#define ATH12K_ACPI_BIOS_SAR_GEO_OFFSET_LEN 18
+#define ATH12K_ACPI_BIOS_SAR_TABLE_LEN 22
#define ATH12K_ACPI_DSM_TAS_DATA_SIZE 69
#define ATH12K_ACPI_DSM_TAS_CFG_SIZE 108
+#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 + \
+ ATH12K_ACPI_BIOS_SAR_TABLE_LEN)
+
int ath12k_get_acpi_all_data(struct ath12k_base *ab);
void acpi_dsm_notify(acpi_handle handle, u32 event, void *data);
#endif
diff --git a/drivers/net/wireless/ath/ath12k/core.h b/drivers/net/wireless/ath/ath12k/core.h
index 80844257fb2d..e9823e063fb6 100644
--- a/drivers/net/wireless/ath/ath12k/core.h
+++ b/drivers/net/wireless/ath/ath12k/core.h
@@ -797,8 +797,11 @@ struct ath12k_base {
struct {
u32 func_bit;
bool acpi_tas_enable;
+ bool acpi_bios_sar_enable;
u8 tas_cfg[ATH12K_ACPI_DSM_TAS_CFG_SIZE];
u8 tas_sar_power_table[ATH12K_ACPI_DSM_TAS_DATA_SIZE];
+ u8 bios_sar_data[ATH12K_ACPI_DSM_BIOS_SAR_DATA_SIZE];
+ u8 geo_offset_data[ATH12K_ACPI_DSM_GEO_OFFSET_DATA_SIZE];
} *acdata;
/* must be last */
diff --git a/drivers/net/wireless/ath/ath12k/wmi.c b/drivers/net/wireless/ath/ath12k/wmi.c
index 6592e5eafed4..09e0a27612ab 100644
--- a/drivers/net/wireless/ath/ath12k/wmi.c
+++ b/drivers/net/wireless/ath/ath12k/wmi.c
@@ -7060,3 +7060,104 @@ int ath12k_wmi_pdev_set_tas_data_table_param(struct ath12k_base *ab,
return ret;
}
+
+int ath12k_wmi_pdev_set_bios_sar_table_param(struct ath12k_base *ab,
+ u8 *psar_table)
+{
+ struct ath12k_wmi_base *wmi_ab = &ab->wmi_ab;
+ struct wmi_pdev_set_bios_sar_table_cmd *cmd;
+ struct wmi_tlv *tlv;
+ struct sk_buff *skb;
+ int ret;
+ u8 *buf_ptr;
+ u32 len, sar_table_len_aligned, sar_dbs_backoff_len_aligned;
+ u8 *psar_value = psar_table + ATH12K_ACPI_POWER_LIMIT_DATA_OFFSET;
+ u8 *pdbs_value = psar_table + ATH12K_ACPI_DBS_BACKOFF_DATA_OFFSET;
+
+ sar_table_len_aligned = roundup(ATH12K_ACPI_BIOS_SAR_TABLE_LEN, sizeof(u32));
+ sar_dbs_backoff_len_aligned = roundup(ATH12K_ACPI_BIOS_SAR_DBS_BACKOFF_LEN,
+ sizeof(u32));
+ len = sizeof(*cmd) + TLV_HDR_SIZE + sar_table_len_aligned +
+ TLV_HDR_SIZE + sar_dbs_backoff_len_aligned;
+
+ skb = ath12k_wmi_alloc_skb(wmi_ab, len);
+ if (!skb)
+ return -ENOMEM;
+
+ cmd = (struct wmi_pdev_set_bios_sar_table_cmd *)skb->data;
+ cmd->tlv_header = ath12k_wmi_tlv_cmd_hdr(WMI_TAG_PDEV_SET_BIOS_SAR_TABLE_CMD,
+ sizeof(*cmd));
+ cmd->pdev_id = cpu_to_le32(WMI_PDEV_ID_SOC);
+ cmd->sar_len = cpu_to_le32(ATH12K_ACPI_BIOS_SAR_TABLE_LEN);
+ cmd->dbs_backoff_len = cpu_to_le32(ATH12K_ACPI_BIOS_SAR_DBS_BACKOFF_LEN);
+
+ buf_ptr = skb->data + sizeof(*cmd);
+ tlv = (struct wmi_tlv *)buf_ptr;
+ tlv->header = ath12k_wmi_tlv_hdr(WMI_TAG_ARRAY_BYTE,
+ sar_table_len_aligned);
+ buf_ptr += TLV_HDR_SIZE;
+ memcpy(buf_ptr, psar_value, ATH12K_ACPI_BIOS_SAR_TABLE_LEN);
+
+ buf_ptr += sar_table_len_aligned;
+ tlv = (struct wmi_tlv *)buf_ptr;
+ tlv->header = ath12k_wmi_tlv_hdr(WMI_TAG_ARRAY_BYTE,
+ sar_dbs_backoff_len_aligned);
+ buf_ptr += TLV_HDR_SIZE;
+ memcpy(buf_ptr, pdbs_value, ATH12K_ACPI_BIOS_SAR_DBS_BACKOFF_LEN);
+
+ ret = ath12k_wmi_cmd_send(&wmi_ab->wmi[0],
+ skb,
+ WMI_PDEV_SET_BIOS_SAR_TABLE_CMDID);
+ if (ret) {
+ ath12k_warn(ab,
+ "failed to send WMI_PDEV_SET_BIOS_INTERFACE_CMDID %d\n",
+ ret);
+ dev_kfree_skb(skb);
+ }
+
+ return ret;
+}
+
+int ath12k_wmi_pdev_set_bios_geo_table_param(struct ath12k_base *ab,
+ u8 *pgeo_table)
+{
+ struct ath12k_wmi_base *wmi_ab = &ab->wmi_ab;
+ struct wmi_pdev_set_bios_geo_table_cmd *cmd;
+ struct wmi_tlv *tlv;
+ struct sk_buff *skb;
+ int ret;
+ u8 *buf_ptr;
+ u32 len, sar_geo_len_aligned;
+ u8 *pgeo_value = pgeo_table + ATH12K_ACPI_GEO_OFFSET_DATA_OFFSET;
+
+ sar_geo_len_aligned = roundup(ATH12K_ACPI_BIOS_SAR_GEO_OFFSET_LEN, sizeof(u32));
+ len = sizeof(*cmd) + TLV_HDR_SIZE + sar_geo_len_aligned;
+
+ skb = ath12k_wmi_alloc_skb(wmi_ab, len);
+ if (!skb)
+ return -ENOMEM;
+
+ cmd = (struct wmi_pdev_set_bios_geo_table_cmd *)skb->data;
+ cmd->tlv_header = ath12k_wmi_tlv_cmd_hdr(WMI_TAG_PDEV_SET_BIOS_GEO_TABLE_CMD,
+ sizeof(*cmd));
+ cmd->pdev_id = cpu_to_le32(WMI_PDEV_ID_SOC);
+ cmd->geo_len = cpu_to_le32(ATH12K_ACPI_BIOS_SAR_GEO_OFFSET_LEN);
+
+ buf_ptr = skb->data + sizeof(*cmd);
+ tlv = (struct wmi_tlv *)buf_ptr;
+ tlv->header = ath12k_wmi_tlv_hdr(WMI_TAG_ARRAY_BYTE, sar_geo_len_aligned);
+ buf_ptr += TLV_HDR_SIZE;
+ memcpy(buf_ptr, pgeo_value, ATH12K_ACPI_BIOS_SAR_GEO_OFFSET_LEN);
+
+ ret = ath12k_wmi_cmd_send(&wmi_ab->wmi[0],
+ skb,
+ WMI_PDEV_SET_BIOS_GEO_TABLE_CMDID);
+ if (ret) {
+ ath12k_warn(ab,
+ "failed to send WMI_PDEV_SET_BIOS_GEO_TABLE_CMDID %d\n",
+ ret);
+ dev_kfree_skb(skb);
+ }
+
+ return ret;
+}
diff --git a/drivers/net/wireless/ath/ath12k/wmi.h b/drivers/net/wireless/ath/ath12k/wmi.h
index 3f3368b3a2c3..677cb2e615e9 100644
--- a/drivers/net/wireless/ath/ath12k/wmi.h
+++ b/drivers/net/wireless/ath/ath12k/wmi.h
@@ -361,6 +361,8 @@ enum wmi_tlv_cmd_id {
WMI_PDEV_DMA_RING_CFG_REQ_CMDID,
WMI_PDEV_HE_TB_ACTION_FRM_CMDID,
WMI_PDEV_PKTLOG_FILTER_CMDID,
+ WMI_PDEV_SET_BIOS_SAR_TABLE_CMDID = 0x4044,
+ WMI_PDEV_SET_BIOS_GEO_TABLE_CMDID = 0x4045,
WMI_PDEV_SET_BIOS_INTERFACE_CMDID = 0x404A,
WMI_VDEV_CREATE_CMDID = WMI_TLV_CMD(WMI_GRP_VDEV),
WMI_VDEV_DELETE_CMDID,
@@ -1932,6 +1934,8 @@ enum wmi_tlv_tag {
WMI_TAG_REGULATORY_RULE_EXT_STRUCT = 0x3A9,
WMI_TAG_REG_CHAN_LIST_CC_EXT_EVENT,
WMI_TAG_EHT_RATE_SET = 0x3C4,
+ WMI_TAG_PDEV_SET_BIOS_SAR_TABLE_CMD = 0x3D8,
+ WMI_TAG_PDEV_SET_BIOS_GEO_TABLE_CMD = 0x3D9,
WMI_TAG_PDEV_SET_BIOS_INTERFACE_CMD = 0x3FB,
WMI_TAG_MAX
};
@@ -4809,6 +4813,19 @@ enum bios_param_type {
WMI_BIOS_PARAM_TYPE_MAX,
};
+struct wmi_pdev_set_bios_sar_table_cmd {
+ __le32 tlv_header;
+ __le32 pdev_id;
+ __le32 sar_len;
+ __le32 dbs_backoff_len;
+} __packed;
+
+struct wmi_pdev_set_bios_geo_table_cmd {
+ __le32 tlv_header;
+ __le32 pdev_id;
+ __le32 geo_len;
+} __packed;
+
#define ATH12K_FW_STATS_BUF_SIZE (1024 * 1024)
enum wmi_sys_cap_info_flags {
@@ -4959,4 +4976,8 @@ int ath12k_wmi_pdev_set_tas_cfg_table_param(struct ath12k_base *ab,
const u8 *ptas_cfg);
int ath12k_wmi_pdev_set_tas_data_table_param(struct ath12k_base *ab,
const u8 *ptas_data);
+int ath12k_wmi_pdev_set_bios_sar_table_param(struct ath12k_base *ab,
+ u8 *psar_table);
+int ath12k_wmi_pdev_set_bios_geo_table_param(struct ath12k_base *ab,
+ u8 *pgeo_table);
#endif
--
2.34.1
Currently, ath12k does not support Time-Average-SAR(TAS) for WCN7850. In
order to enable Time-Average-SAR(TAS) for WCN7850, ath12k defines
ath12k_get_acpi_all_data() function to get TAS configuration and SAR power
table, then sets pdev_id, param_type_id, and finally sends the TAS
configuration, SAR power table and WMI_PDEV_SET_BIOS_INTERFACE_CMDID
command to firmware to implement TAS during the initialization phase.
Besides, ath12k registers an ACPI event callback so that ACPI can notify
ath12k to get the updated SAR power table and sends it to firmware when the
device state is changed.
Tested-on: WCN7850 hw2.0 PCI WLAN.HMT.1.0-03427-QCAHMTSWPL_V1.0_V2.0_SILICONZ-1.15378.4
Signed-off-by: Lingbo Kong <[email protected]>
---
v7:
1.adjust the length of line
v6:
1.remove code that is not called
v5:
1.rebase to the latest tag
v4:
1.revise commit log using imperative voice
2.delete guid_is_null()
v3:
1.remove unnecessary cpu_to_le32()
v2:
1.put <linux/acpi.h> in the include guard
drivers/net/wireless/ath/ath12k/Makefile | 3 +-
drivers/net/wireless/ath/ath12k/acpi.c | 198 +++++++++++++++++++++++
drivers/net/wireless/ath/ath12k/acpi.h | 29 ++++
drivers/net/wireless/ath/ath12k/core.c | 6 +
drivers/net/wireless/ath/ath12k/core.h | 8 +
drivers/net/wireless/ath/ath12k/hw.c | 10 ++
drivers/net/wireless/ath/ath12k/hw.h | 4 +-
drivers/net/wireless/ath/ath12k/pci.c | 6 +
drivers/net/wireless/ath/ath12k/wmi.c | 88 ++++++++++
drivers/net/wireless/ath/ath12k/wmi.h | 20 ++-
10 files changed, 369 insertions(+), 3 deletions(-)
create mode 100644 drivers/net/wireless/ath/ath12k/acpi.c
create mode 100644 drivers/net/wireless/ath/ath12k/acpi.h
diff --git a/drivers/net/wireless/ath/ath12k/Makefile b/drivers/net/wireless/ath/ath12k/Makefile
index 62c52e733b5e..a479fe06caac 100644
--- a/drivers/net/wireless/ath/ath12k/Makefile
+++ b/drivers/net/wireless/ath/ath12k/Makefile
@@ -19,7 +19,8 @@ ath12k-y += core.o \
hw.o \
mhi.o \
pci.o \
- dp_mon.o
+ dp_mon.o \
+ acpi.o
ath12k-$(CONFIG_ATH12K_TRACING) += trace.o
diff --git a/drivers/net/wireless/ath/ath12k/acpi.c b/drivers/net/wireless/ath/ath12k/acpi.c
new file mode 100644
index 000000000000..816d3353a4d3
--- /dev/null
+++ b/drivers/net/wireless/ath/ath12k/acpi.c
@@ -0,0 +1,198 @@
+// SPDX-License-Identifier: BSD-3-Clause-Clear
+/*
+ * Copyright (c) 2018-2021 The Linux Foundation. All rights reserved.
+ * Copyright (c) 2021-2023 Qualcomm Innovation Center, Inc. All rights reserved.
+ */
+
+#include "core.h"
+#include "acpi.h"
+#include "debug.h"
+
+static int ath12k_acpi_dsm_get_data(struct ath12k_base *ab, int func)
+{
+ union acpi_object *obj;
+ acpi_handle root_handle;
+ int ret = 0;
+
+ root_handle = ACPI_HANDLE(ab->dev);
+ if (!root_handle) {
+ ath12k_dbg(ab, ATH12K_DBG_BOOT, "invalid ACPI handler\n");
+ return -EOPNOTSUPP;
+ }
+
+ obj = acpi_evaluate_dsm(root_handle, ab->hw_params->acpi_guid, 0, func,
+ NULL);
+
+ if (!obj) {
+ ath12k_dbg(ab, ATH12K_DBG_BOOT, "ACPI _DSM method invocation failed\n");
+ return -ENOENT;
+ }
+
+ if (obj->type == ACPI_TYPE_INTEGER) {
+ ab->acdata->func_bit = obj->integer.value;
+ } else if (obj->type == ACPI_TYPE_BUFFER) {
+ switch (func) {
+ case ATH12K_ACPI_DSM_FUNC_TAS_CFG:
+ if (obj->buffer.length != ATH12K_ACPI_DSM_TAS_CFG_SIZE) {
+ ath12k_err(ab, "Invalid TAS cfg size %d\n",
+ obj->buffer.length);
+ ret = -EINVAL;
+ goto out;
+ }
+ memcpy(&ab->acdata->tas_cfg, obj->buffer.pointer,
+ obj->buffer.length);
+ break;
+ case ATH12K_ACPI_DSM_FUNC_TAS_DATA:
+ if (obj->buffer.length != ATH12K_ACPI_DSM_TAS_DATA_SIZE) {
+ ath12k_err(ab, "Invalid TAS data size %d\n",
+ obj->buffer.length);
+ ret = -EINVAL;
+ goto out;
+ }
+ memcpy(&ab->acdata->tas_sar_power_table, obj->buffer.pointer,
+ obj->buffer.length);
+ break;
+ }
+ } else {
+ ath12k_err(ab,
+ "ACPI: DSM method did not return a valid object, type %d\n",
+ obj->type);
+ ret = -EINVAL;
+ }
+
+out:
+ ACPI_FREE(obj);
+ return ret;
+}
+
+static int ath12k_set_tas_power_limit_data(struct ath12k_base *ab)
+{
+ int ret;
+ const u8 *tas_sar_power_table = ab->acdata->tas_sar_power_table;
+
+ if (ab->acdata->tas_sar_power_table[0] == ATH12K_ACPI_TAS_DATA_VERSION &&
+ ab->acdata->tas_sar_power_table[1] == ATH12K_ACPI_TAS_DATA_ENABLE) {
+ ret = ath12k_wmi_pdev_set_tas_data_table_param(ab,
+ tas_sar_power_table);
+ if (ret)
+ ath12k_err(ab, "failed to pass tas data table %d\n", ret);
+ } else {
+ ath12k_err(ab, "the latest tas data is invalid\n");
+ ret = -EINVAL;
+ }
+
+ return ret;
+}
+
+void acpi_dsm_notify(acpi_handle handle, u32 event, void *data)
+{
+ int ret;
+ struct ath12k_base *ab = data;
+
+ if (event == ATH12K_ACPI_NOTIFY_EVENT) {
+ if (ab->acdata->acpi_tas_enable) {
+ ret = ath12k_acpi_dsm_get_data(ab,
+ ATH12K_ACPI_DSM_FUNC_TAS_DATA);
+ if (ret) {
+ ath12k_err(ab, "fail to update tas data table %d\n", ret);
+ return;
+ }
+
+ ret = ath12k_set_tas_power_limit_data(ab);
+ if (ret)
+ return;
+ }
+ } else {
+ ath12k_err(ab, "unknown acpi notify %u\n", event);
+ }
+}
+
+static int ath12k_pass_acpi_cfg_and_data_to_fw(struct ath12k_base *ab)
+{
+ int ret;
+
+ ret = ath12k_wmi_pdev_set_tas_cfg_table_param(ab,
+ ab->acdata->tas_cfg);
+ if (ret) {
+ ath12k_err(ab, "failed to pass tas cfg table to fw %d\n", ret);
+ return ret;
+ }
+
+ ret = ath12k_wmi_pdev_set_tas_data_table_param(ab,
+ ab->acdata->tas_sar_power_table);
+ if (ret)
+ ath12k_err(ab, "failed to pass tas data table to fw %d\n", ret);
+
+ return ret;
+}
+
+int ath12k_get_acpi_all_data(struct ath12k_base *ab)
+{
+ int ret;
+ acpi_status status;
+
+ ab->acdata = kzalloc(sizeof(*ab->acdata), GFP_KERNEL);
+ if (!ab->acdata)
+ return -ENOMEM;
+
+ ab->acdata->acpi_tas_enable = false;
+
+ ret = ath12k_acpi_dsm_get_data(ab,
+ ATH12K_ACPI_DSM_FUNC_SUPPORT_FUNCS);
+
+ if (ret)
+ return ret;
+
+ if (ATH12K_ACPI_FUNC_BIT_VALID(ab->acdata, ATH12K_ACPI_FUNC_BIT_TAS_CFG)) {
+ ret = ath12k_acpi_dsm_get_data(ab,
+ ATH12K_ACPI_DSM_FUNC_TAS_CFG);
+ if (ret) {
+ ath12k_err(ab, "failed to get tas cfg table %d\n", ret);
+ goto err_free_acdata;
+ }
+ }
+
+ if (ATH12K_ACPI_FUNC_BIT_VALID(ab->acdata, ATH12K_ACPI_FUNC_BIT_TAS_DATA)) {
+ ret = ath12k_acpi_dsm_get_data(ab,
+ ATH12K_ACPI_DSM_FUNC_TAS_DATA);
+ if (ret) {
+ ath12k_err(ab, "failed to get tas data table %d\n", ret);
+ goto err_free_acdata;
+ }
+
+ if (ATH12K_ACPI_FUNC_BIT_VALID(ab->acdata,
+ ATH12K_ACPI_FUNC_BIT_TAS_CFG) &&
+ ab->acdata->tas_sar_power_table[0] == ATH12K_ACPI_TAS_DATA_VERSION &&
+ ab->acdata->tas_sar_power_table[1] == ATH12K_ACPI_TAS_DATA_ENABLE)
+ ab->acdata->acpi_tas_enable = true;
+ }
+
+ if (ab->acdata->acpi_tas_enable) {
+ ret = ath12k_pass_acpi_cfg_and_data_to_fw(ab);
+ if (ret)
+ goto err_free_acdata;
+ }
+
+ status = acpi_install_notify_handler(ACPI_HANDLE(ab->dev),
+ ACPI_DEVICE_NOTIFY,
+ acpi_dsm_notify, ab);
+ if (ACPI_FAILURE(status)) {
+ ath12k_err(ab, "failed to install DSM notify callback\n");
+ goto err_remove_notify;
+ }
+
+ return 0;
+
+err_remove_notify:
+ acpi_remove_notify_handler(ACPI_HANDLE(ab->dev),
+ ACPI_DEVICE_NOTIFY,
+ acpi_dsm_notify);
+
+ ret = -EIO;
+
+err_free_acdata:
+ kfree(ab->acdata);
+ ab->acdata = NULL;
+
+ return ret;
+}
diff --git a/drivers/net/wireless/ath/ath12k/acpi.h b/drivers/net/wireless/ath/ath12k/acpi.h
new file mode 100644
index 000000000000..7d6a1113835e
--- /dev/null
+++ b/drivers/net/wireless/ath/ath12k/acpi.h
@@ -0,0 +1,29 @@
+/* SPDX-License-Identifier: BSD-3-Clause-Clear */
+/*
+ * Copyright (c) 2018-2021 The Linux Foundation. All rights reserved.
+ * Copyright (c) 2021-2023 Qualcomm Innovation Center, Inc. All rights reserved.
+ */
+#ifndef ATH12K_ACPI_H
+#define ATH12K_ACPI_H
+
+#include <linux/acpi.h>
+
+#define ATH12K_ACPI_DSM_FUNC_SUPPORT_FUNCS 0
+#define ATH12K_ACPI_DSM_FUNC_TAS_CFG 8
+#define ATH12K_ACPI_DSM_FUNC_TAS_DATA 9
+
+#define ATH12K_ACPI_FUNC_BIT_TAS_CFG BIT(7)
+#define ATH12K_ACPI_FUNC_BIT_TAS_DATA BIT(8)
+
+#define ATH12K_ACPI_NOTIFY_EVENT 0x86
+#define ATH12K_ACPI_FUNC_BIT_VALID(_acdata, _func) (((_acdata)->func_bit) & (_func))
+
+#define ATH12K_ACPI_TAS_DATA_VERSION 0x1
+#define ATH12K_ACPI_TAS_DATA_ENABLE 0x1
+
+#define ATH12K_ACPI_DSM_TAS_DATA_SIZE 69
+#define ATH12K_ACPI_DSM_TAS_CFG_SIZE 108
+
+int ath12k_get_acpi_all_data(struct ath12k_base *ab);
+void acpi_dsm_notify(acpi_handle handle, u32 event, void *data);
+#endif
diff --git a/drivers/net/wireless/ath/ath12k/core.c b/drivers/net/wireless/ath/ath12k/core.c
index 94857100414d..276197a0cade 100644
--- a/drivers/net/wireless/ath/ath12k/core.c
+++ b/drivers/net/wireless/ath/ath12k/core.c
@@ -628,6 +628,12 @@ static int ath12k_core_start(struct ath12k_base *ab,
goto err_reo_cleanup;
}
+ if (ab->hw_params->acpi_guid) {
+ ret = ath12k_get_acpi_all_data(ab);
+ if (!ret)
+ ath12k_info(ab, "success to get acpi cfg data\n");
+ }
+
return 0;
err_reo_cleanup:
diff --git a/drivers/net/wireless/ath/ath12k/core.h b/drivers/net/wireless/ath/ath12k/core.h
index 254eb42a85c5..80844257fb2d 100644
--- a/drivers/net/wireless/ath/ath12k/core.h
+++ b/drivers/net/wireless/ath/ath12k/core.h
@@ -24,6 +24,7 @@
#include "hal_rx.h"
#include "reg.h"
#include "dbring.h"
+#include "acpi.h"
#define SM(_v, _f) (((_v) << _f##_LSB) & _f##_MASK)
@@ -793,6 +794,13 @@ struct ath12k_base {
/* true means radio is on */
bool rfkill_radio_on;
+ struct {
+ u32 func_bit;
+ bool acpi_tas_enable;
+ u8 tas_cfg[ATH12K_ACPI_DSM_TAS_CFG_SIZE];
+ u8 tas_sar_power_table[ATH12K_ACPI_DSM_TAS_DATA_SIZE];
+ } *acdata;
+
/* must be last */
u8 drv_priv[] __aligned(sizeof(void *));
};
diff --git a/drivers/net/wireless/ath/ath12k/hw.c b/drivers/net/wireless/ath/ath12k/hw.c
index 69299bff11e1..41a42274a8f2 100644
--- a/drivers/net/wireless/ath/ath12k/hw.c
+++ b/drivers/net/wireless/ath/ath12k/hw.c
@@ -15,6 +15,10 @@
#include "mhi.h"
#include "dp_rx.h"
+static const guid_t wcn7850_uuid = GUID_INIT(0xf634f534, 0x6147, 0x11ec,
+ 0x90, 0xd6, 0x02, 0x42,
+ 0xac, 0x12, 0x00, 0x03);
+
static u8 ath12k_hw_qcn9274_mac_from_pdev_id(int pdev_idx)
{
return pdev_idx;
@@ -913,6 +917,8 @@ static const struct ath12k_hw_params ath12k_hw_params[] = {
.rfkill_on_level = 0,
.rddm_size = 0,
+
+ .acpi_guid = NULL,
},
{
.name = "wcn7850 hw2.0",
@@ -976,6 +982,8 @@ static const struct ath12k_hw_params ath12k_hw_params[] = {
.rfkill_on_level = 1,
.rddm_size = 0x780000,
+
+ .acpi_guid = &wcn7850_uuid,
},
{
.name = "qcn9274 hw2.0",
@@ -1037,6 +1045,8 @@ static const struct ath12k_hw_params ath12k_hw_params[] = {
.rfkill_on_level = 0,
.rddm_size = 0,
+
+ .acpi_guid = NULL,
},
};
diff --git a/drivers/net/wireless/ath/ath12k/hw.h b/drivers/net/wireless/ath/ath12k/hw.h
index 2d6427cf41a4..beab90919e12 100644
--- a/drivers/net/wireless/ath/ath12k/hw.h
+++ b/drivers/net/wireless/ath/ath12k/hw.h
@@ -8,7 +8,7 @@
#define ATH12K_HW_H
#include <linux/mhi.h>
-
+#include <linux/uuid.h>
#include "wmi.h"
#include "hal.h"
@@ -192,6 +192,8 @@ struct ath12k_hw_params {
u32 rfkill_on_level;
u32 rddm_size;
+
+ const guid_t *acpi_guid;
};
struct ath12k_hw_ops {
diff --git a/drivers/net/wireless/ath/ath12k/pci.c b/drivers/net/wireless/ath/ath12k/pci.c
index fae5dfd6e9d7..77d272d11cfb 100644
--- a/drivers/net/wireless/ath/ath12k/pci.c
+++ b/drivers/net/wireless/ath/ath12k/pci.c
@@ -1342,6 +1342,12 @@ static void ath12k_pci_remove(struct pci_dev *pdev)
ath12k_hal_srng_deinit(ab);
ath12k_ce_free_pipes(ab);
+ if (ab->hw_params->acpi_guid && ab->acdata) {
+ acpi_remove_notify_handler(ACPI_HANDLE(ab->dev),
+ ACPI_DEVICE_NOTIFY,
+ acpi_dsm_notify);
+ kfree(ab->acdata);
+ }
ath12k_core_free(ab);
}
diff --git a/drivers/net/wireless/ath/ath12k/wmi.c b/drivers/net/wireless/ath/ath12k/wmi.c
index 1cac0135a1bc..6592e5eafed4 100644
--- a/drivers/net/wireless/ath/ath12k/wmi.c
+++ b/drivers/net/wireless/ath/ath12k/wmi.c
@@ -6972,3 +6972,91 @@ void ath12k_wmi_detach(struct ath12k_base *ab)
ath12k_wmi_free_dbring_caps(ab);
}
+
+int ath12k_wmi_pdev_set_tas_cfg_table_param(struct ath12k_base *ab,
+ const u8 *ptas_cfg)
+{
+ struct ath12k_wmi_base *wmi_ab = &ab->wmi_ab;
+ struct wmi_pdev_set_bios_interface_cmd *cmd;
+ struct wmi_tlv *tlv;
+ struct sk_buff *skb;
+ u8 *buf_ptr;
+ u32 len, len_aligned;
+ int ret;
+
+ len_aligned = roundup(ATH12K_ACPI_DSM_TAS_CFG_SIZE, sizeof(u32));
+ len = sizeof(*cmd) + TLV_HDR_SIZE + len_aligned;
+
+ skb = ath12k_wmi_alloc_skb(wmi_ab, len);
+ if (!skb)
+ return -ENOMEM;
+
+ cmd = (struct wmi_pdev_set_bios_interface_cmd *)skb->data;
+ cmd->tlv_header = ath12k_wmi_tlv_cmd_hdr(WMI_TAG_PDEV_SET_BIOS_INTERFACE_CMD,
+ sizeof(*cmd));
+ cmd->pdev_id = cpu_to_le32(WMI_PDEV_ID_SOC);
+ cmd->param_type_id = cpu_to_le32(WMI_BIOS_PARAM_TAS_CONFIG_TYPE);
+ cmd->length = cpu_to_le32(ATH12K_ACPI_DSM_TAS_CFG_SIZE);
+
+ buf_ptr = skb->data + sizeof(*cmd);
+ tlv = (struct wmi_tlv *)buf_ptr;
+ tlv->header = ath12k_wmi_tlv_hdr(WMI_TAG_ARRAY_BYTE, len_aligned);
+ buf_ptr += TLV_HDR_SIZE;
+ memcpy(buf_ptr, ptas_cfg, ATH12K_ACPI_DSM_TAS_CFG_SIZE);
+
+ ret = ath12k_wmi_cmd_send(&wmi_ab->wmi[0],
+ skb,
+ WMI_PDEV_SET_BIOS_INTERFACE_CMDID);
+ if (ret) {
+ ath12k_warn(ab,
+ "failed to send WMI_PDEV_SET_BIOS_INTERFACE_CMDID %d\n",
+ ret);
+ dev_kfree_skb(skb);
+ }
+
+ return ret;
+}
+
+int ath12k_wmi_pdev_set_tas_data_table_param(struct ath12k_base *ab,
+ const u8 *ptas_data)
+{
+ struct ath12k_wmi_base *wmi_ab = &ab->wmi_ab;
+ struct wmi_pdev_set_bios_interface_cmd *cmd;
+ struct wmi_tlv *tlv;
+ struct sk_buff *skb;
+ u8 *buf_ptr;
+ u32 len, len_aligned;
+ int ret;
+
+ len_aligned = roundup(ATH12K_ACPI_DSM_TAS_DATA_SIZE, sizeof(u32));
+ len = sizeof(*cmd) + TLV_HDR_SIZE + len_aligned;
+
+ skb = ath12k_wmi_alloc_skb(wmi_ab, len);
+ if (!skb)
+ return -ENOMEM;
+
+ cmd = (struct wmi_pdev_set_bios_interface_cmd *)skb->data;
+ cmd->tlv_header = ath12k_wmi_tlv_cmd_hdr(WMI_TAG_PDEV_SET_BIOS_INTERFACE_CMD,
+ sizeof(*cmd));
+ cmd->pdev_id = cpu_to_le32(WMI_PDEV_ID_SOC);
+ cmd->param_type_id = cpu_to_le32(WMI_BIOS_PARAM_TAS_DATA_TYPE);
+ cmd->length = cpu_to_le32(ATH12K_ACPI_DSM_TAS_DATA_SIZE);
+
+ buf_ptr = skb->data + sizeof(*cmd);
+ tlv = (struct wmi_tlv *)buf_ptr;
+ tlv->header = ath12k_wmi_tlv_hdr(WMI_TAG_ARRAY_BYTE, len_aligned);
+ buf_ptr += TLV_HDR_SIZE;
+ memcpy(buf_ptr, ptas_data, ATH12K_ACPI_DSM_TAS_DATA_SIZE);
+
+ ret = ath12k_wmi_cmd_send(&wmi_ab->wmi[0],
+ skb,
+ WMI_PDEV_SET_BIOS_INTERFACE_CMDID);
+ if (ret) {
+ ath12k_warn(ab,
+ "failed to send WMI_PDEV_SET_BIOS_INTERFACE_CMDID %d\n",
+ ret);
+ dev_kfree_skb(skb);
+ }
+
+ return ret;
+}
diff --git a/drivers/net/wireless/ath/ath12k/wmi.h b/drivers/net/wireless/ath/ath12k/wmi.h
index 629373d67421..3f3368b3a2c3 100644
--- a/drivers/net/wireless/ath/ath12k/wmi.h
+++ b/drivers/net/wireless/ath/ath12k/wmi.h
@@ -361,6 +361,7 @@ enum wmi_tlv_cmd_id {
WMI_PDEV_DMA_RING_CFG_REQ_CMDID,
WMI_PDEV_HE_TB_ACTION_FRM_CMDID,
WMI_PDEV_PKTLOG_FILTER_CMDID,
+ WMI_PDEV_SET_BIOS_INTERFACE_CMDID = 0x404A,
WMI_VDEV_CREATE_CMDID = WMI_TLV_CMD(WMI_GRP_VDEV),
WMI_VDEV_DELETE_CMDID,
WMI_VDEV_START_REQUEST_CMDID,
@@ -1931,6 +1932,7 @@ enum wmi_tlv_tag {
WMI_TAG_REGULATORY_RULE_EXT_STRUCT = 0x3A9,
WMI_TAG_REG_CHAN_LIST_CC_EXT_EVENT,
WMI_TAG_EHT_RATE_SET = 0x3C4,
+ WMI_TAG_PDEV_SET_BIOS_INTERFACE_CMD = 0x3FB,
WMI_TAG_MAX
};
@@ -4794,6 +4796,19 @@ struct ath12k_wmi_base {
struct ath12k_wmi_target_cap_arg *targ_cap;
};
+struct wmi_pdev_set_bios_interface_cmd {
+ __le32 tlv_header;
+ __le32 pdev_id;
+ __le32 param_type_id;
+ __le32 length;
+} __packed;
+
+enum bios_param_type {
+ WMI_BIOS_PARAM_TAS_CONFIG_TYPE = 1,
+ WMI_BIOS_PARAM_TAS_DATA_TYPE = 2,
+ WMI_BIOS_PARAM_TYPE_MAX,
+};
+
#define ATH12K_FW_STATS_BUF_SIZE (1024 * 1024)
enum wmi_sys_cap_info_flags {
@@ -4940,5 +4955,8 @@ int ath12k_wmi_probe_resp_tmpl(struct ath12k *ar, u32 vdev_id,
struct sk_buff *tmpl);
int ath12k_wmi_set_hw_mode(struct ath12k_base *ab,
enum wmi_host_hw_mode_config_type mode);
-
+int ath12k_wmi_pdev_set_tas_cfg_table_param(struct ath12k_base *ab,
+ const u8 *ptas_cfg);
+int ath12k_wmi_pdev_set_tas_data_table_param(struct ath12k_base *ab,
+ const u8 *ptas_data);
#endif
--
2.34.1
On 10/13/2023 4:44 AM, Lingbo Kong wrote:
> Currently, ath12k does not support Time-Average-SAR(TAS) for WCN7850. In
> order to enable Time-Average-SAR(TAS) for WCN7850, ath12k defines
> ath12k_get_acpi_all_data() function to get TAS configuration and SAR power
> table, then sets pdev_id, param_type_id, and finally sends the TAS
> configuration, SAR power table and WMI_PDEV_SET_BIOS_INTERFACE_CMDID
> command to firmware to implement TAS during the initialization phase.
> Besides, ath12k registers an ACPI event callback so that ACPI can notify
> ath12k to get the updated SAR power table and sends it to firmware when the
> device state is changed.
>
> Tested-on: WCN7850 hw2.0 PCI WLAN.HMT.1.0-03427-QCAHMTSWPL_V1.0_V2.0_SILICONZ-1.15378.4
>
> Signed-off-by: Lingbo Kong <[email protected]>
Verified ath12k-check
Acked-by: Jeff Johnson <[email protected]>
On 10/13/2023 4:44 AM, Lingbo Kong wrote:
> Currently, ath12k does not support BIOS SAR for WCN7850. In order to enable
> BIOS SAR for WCN7850, ath12k gets BIOS SAR table and GEO offset table in
> ath12k_acpi_dsm_get_data() function, then sets pdev_id, length of data, and
> finally sends these data and WMI_PDEV_SET_BIOS_SAR_TABLE_CMDID and
> WMI_PDEV_SET_BIOS_GEO_TABLE_CMDID to firmware to implement BIOS SAR during
> the initialization phase. Besides, ath12k registers an ACPI event callback
> so that ACPI can notify ath12k to get the updated BIOS SAR table and sends
> it to firmware when the device state is changed.
>
> Tested-on: WCN7850 hw2.0 PCI WLAN.HMT.1.0-03427-QCAHMTSWPL_V1.0_V2.0_SILICONZ-1.15378.4
>
> Signed-off-by: Lingbo Kong <[email protected]>
Verified ath12k-check
Acked-by: Jeff Johnson <[email protected]>
On 10/13/2023 4:44 AM, Lingbo Kong wrote:
> Currently, ath12k does not have the ability to adjust CCA threshold values
> to meet the regulatory requirements. In order to support this, ath12k gets
> CCA threshold configuration in ath12k_acpi_dsm_get_data() function, then
> sets pdev_id and param_type_id and finally sends these data to firmware to
> implement the adjustment of the CCA threshold value.
>
> Tested-on: WCN7850 hw2.0 PCI WLAN.HMT.1.0-03427-QCAHMTSWPL_V1.0_V2.0_SILICONZ-1.15378.4
>
> Signed-off-by: Lingbo Kong <[email protected]>
Verified ath12k-check
Acked-by: Jeff Johnson <[email protected]>
Lingbo Kong <[email protected]> writes:
> Through reading ACPI table, implement Time-Average-SAR(TAS), BIOS SAR,
> configuration of CCA threshold and band edge channel power functionalities.
The coding style felt more like for a vendor driver style than upstream
driver so I made quite a lot of changes, too many to list. But for
example I did changes in naming, code compiled only if CONFIG_ACPI is
enabled and whitespace cleanup.
The updated patches are here:
https://git.kernel.org/pub/scm/linux/kernel/git/kvalo/ath.git/commit/?h=pending&id=98dbc0c37b480117959221cafa6326e54667a53a
https://git.kernel.org/pub/scm/linux/kernel/git/kvalo/ath.git/commit/?h=pending&id=c3d84c46ff4029fdfe15036be4f0a0d1839d31c6
https://git.kernel.org/pub/scm/linux/kernel/git/kvalo/ath.git/commit/?h=pending&id=04ec37eb823d9d9cba01531a938c53e8a142486f
https://git.kernel.org/pub/scm/linux/kernel/git/kvalo/ath.git/commit/?h=pending&id=fdd99edcb8ce2433fd243b5ae1b57668eab48ef0
I still have at least few things to do which I'll try to do soon:
o find a correct place to call register()&unregister()
o move wmi functions up in wmi.c
o consolidate wmi functions into two functions? (duplicated code)
I'll let you know once I'm done. As I don't have any device with these
ACPI settings I would need help with testing.
--
https://patchwork.kernel.org/project/linux-wireless/list/
https://wireless.wiki.kernel.org/en/developers/documentation/submittingpatches