From: Wen Gong Date: Thu, 17 Apr 2025 02:42:27 +0000 (+0800) Subject: wifi: ath12k: read country code from SMBIOS for WCN7850 X-Git-Tag: v6.16-rc1~132^2~46^2~1^2~64 X-Git-Url: https://git.kernel.dk/?a=commitdiff_plain;h=31d48b93b1f8697254c4d7fa922eaaa3b28a7ab8;p=linux-block.git wifi: ath12k: read country code from SMBIOS for WCN7850 Read the country code from SMBIOS and send it to the firmware. The firmware will then indicate the regulatory domain information for the country code, which ath12k will use. dmesg: [ 1242.637253] ath12k_pci 0000:02:00.0: worldwide regdomain setting from SMBIOS [ 1242.637259] ath12k_pci 0000:02:00.0: bdf variant name not found. [ 1242.637261] ath12k_pci 0000:02:00.0: SMBIOS bdf variant name not set. [ 1242.927543] ath12k_pci 0000:02:00.0: set current country pdev id 0 alpha2 00 Tested-on: WCN7850 hw2.0 PCI WLAN.HMT.1.0-02582-QCAHMTSWPL_V1.0_V2.0_SILICONZ-1 Signed-off-by: Wen Gong Signed-off-by: Kang Yang Reviewed-by: Baochen Qiang Link: https://patch.msgid.link/20250417024227.1712-1-kang.yang@oss.qualcomm.com Signed-off-by: Jeff Johnson --- diff --git a/drivers/net/wireless/ath/ath12k/core.c b/drivers/net/wireless/ath/ath12k/core.c index 7eccd9cf9036..dea25ce90009 100644 --- a/drivers/net/wireless/ath/ath12k/core.c +++ b/drivers/net/wireless/ath/ath12k/core.c @@ -697,7 +697,7 @@ static void ath12k_core_stop(struct ath12k_base *ab) /* De-Init of components as needed */ } -static void ath12k_core_check_bdfext(const struct dmi_header *hdr, void *data) +static void ath12k_core_check_cc_code_bdfext(const struct dmi_header *hdr, void *data) { struct ath12k_base *ab = data; const char *magic = ATH12K_SMBIOS_BDF_EXT_MAGIC; @@ -719,6 +719,28 @@ static void ath12k_core_check_bdfext(const struct dmi_header *hdr, void *data) return; } + spin_lock_bh(&ab->base_lock); + + switch (smbios->country_code_flag) { + case ATH12K_SMBIOS_CC_ISO: + ab->new_alpha2[0] = u16_get_bits(smbios->cc_code >> 8, 0xff); + ab->new_alpha2[1] = u16_get_bits(smbios->cc_code, 0xff); + ath12k_dbg(ab, ATH12K_DBG_BOOT, "boot smbios cc_code %c%c\n", + ab->new_alpha2[0], ab->new_alpha2[1]); + break; + case ATH12K_SMBIOS_CC_WW: + ab->new_alpha2[0] = '0'; + ab->new_alpha2[1] = '0'; + ath12k_dbg(ab, ATH12K_DBG_BOOT, "boot smbios worldwide regdomain\n"); + break; + default: + ath12k_dbg(ab, ATH12K_DBG_BOOT, "boot ignore smbios country code setting %d\n", + smbios->country_code_flag); + break; + } + + spin_unlock_bh(&ab->base_lock); + if (!smbios->bdf_enabled) { ath12k_dbg(ab, ATH12K_DBG_BOOT, "bdf variant name not found.\n"); return; @@ -758,7 +780,7 @@ static void ath12k_core_check_bdfext(const struct dmi_header *hdr, void *data) int ath12k_core_check_smbios(struct ath12k_base *ab) { ab->qmi.target.bdf_ext[0] = '\0'; - dmi_walk(ath12k_core_check_bdfext, ab); + dmi_walk(ath12k_core_check_cc_code_bdfext, ab); if (ab->qmi.target.bdf_ext[0] == '\0') return -ENODATA; diff --git a/drivers/net/wireless/ath/ath12k/core.h b/drivers/net/wireless/ath/ath12k/core.h index 4b8f434e3e9a..1b7701b8afd1 100644 --- a/drivers/net/wireless/ath/ath12k/core.h +++ b/drivers/net/wireless/ath/ath12k/core.h @@ -175,9 +175,34 @@ struct ath12k_ext_irq_grp { struct net_device *napi_ndev; }; +enum ath12k_smbios_cc_type { + /* disable country code setting from SMBIOS */ + ATH12K_SMBIOS_CC_DISABLE = 0, + + /* set country code by ANSI country name, based on ISO3166-1 alpha2 */ + ATH12K_SMBIOS_CC_ISO = 1, + + /* worldwide regdomain */ + ATH12K_SMBIOS_CC_WW = 2, +}; + struct ath12k_smbios_bdf { struct dmi_header hdr; - u32 padding; + u8 features_disabled; + + /* enum ath12k_smbios_cc_type */ + u8 country_code_flag; + + /* To set specific country, you need to set country code + * flag=ATH12K_SMBIOS_CC_ISO first, then if country is United + * States, then country code value = 0x5553 ("US",'U' = 0x55, 'S'= + * 0x53). To set country to INDONESIA, then country code value = + * 0x4944 ("IN", 'I'=0x49, 'D'=0x44). If country code flag = + * ATH12K_SMBIOS_CC_WW, then you can use worldwide regulatory + * setting. + */ + u16 cc_code; + u8 bdf_enabled; u8 bdf_ext[]; } __packed; diff --git a/drivers/net/wireless/ath/ath12k/mac.c b/drivers/net/wireless/ath/ath12k/mac.c index 4dae941c9615..59aa69ca1ae2 100644 --- a/drivers/net/wireless/ath/ath12k/mac.c +++ b/drivers/net/wireless/ath/ath12k/mac.c @@ -11651,6 +11651,18 @@ static int ath12k_mac_hw_register(struct ath12k_hw *ah) goto err_unregister_hw; } + if (ar->ab->hw_params->current_cc_support && ab->new_alpha2[0]) { + struct wmi_set_current_country_arg current_cc = {}; + + memcpy(¤t_cc.alpha2, ab->new_alpha2, 2); + memcpy(&ar->alpha2, ab->new_alpha2, 2); + ret = ath12k_wmi_send_set_current_country_cmd(ar, ¤t_cc); + if (ret) + ath12k_warn(ar->ab, + "failed set cc code for mac register: %d\n", + ret); + } + ath12k_fw_stats_init(ar); ath12k_debugfs_register(ar); }