@@ -29,6 +29,11 @@
#define BTINTEL_EFI_DSBR L"UefiCnvCommonDSBR"
+#define BTINTEL_BT_DOMAIN 0x12
+#define BTINTEL_SAR_LEGACY 0
+#define BTINTEL_SAR_INC_PWR 1
+#define BTINTEL_SAR_INC_PWR_SUPPORTED 0
+
enum {
DSM_SET_WDISABLE2_DELAY = 1,
DSM_SET_RESET_METHOD = 3,
@@ -2799,6 +2804,311 @@ static int btintel_set_dsbr(struct hci_dev *hdev, struct intel_version_tlv *ver)
return 0;
}
+#ifdef CONFIG_ACPI
+static acpi_status btintel_evaluate_acpi_method(struct hci_dev *hdev,
+ acpi_string method,
+ union acpi_object **ptr,
+ u8 pkg_size)
+{
+ struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
+ union acpi_object *p;
+ acpi_status status;
+ acpi_handle handle;
+
+ handle = ACPI_HANDLE(GET_HCIDEV_DEV(hdev));
+ if (!handle) {
+ bt_dev_dbg(hdev, "ACPI-BT: No ACPI support for Bluetooth device");
+ return AE_NOT_EXIST;
+ }
+
+ status = acpi_evaluate_object(handle, method, NULL, &buffer);
+
+ if (ACPI_FAILURE(status)) {
+ bt_dev_dbg(hdev, "ACPI-BT: ACPI Failure: %s method: %s",
+ acpi_format_exception(status), method);
+ return status;
+ }
+
+ p = buffer.pointer;
+
+ if (p->type != ACPI_TYPE_PACKAGE || p->package.count < pkg_size) {
+ bt_dev_warn(hdev, "ACPI-BT: Invalid object type: %d or package count: %d",
+ p->type, p->package.count);
+ kfree(buffer.pointer);
+ return AE_ERROR;
+ }
+
+ *ptr = buffer.pointer;
+ return 0;
+}
+
+static union acpi_object *btintel_acpi_get_bt_pkg(union acpi_object *buffer)
+{
+ union acpi_object *domain, *bt_pkg;
+ int i;
+
+ for (i = 1; i < buffer->package.count; i++) {
+ bt_pkg = &buffer->package.elements[i];
+ domain = &bt_pkg->package.elements[0];
+ if (domain->type == ACPI_TYPE_INTEGER &&
+ domain->integer.value == BTINTEL_BT_DOMAIN)
+ return bt_pkg;
+ }
+ return ERR_PTR(-ENOENT);
+}
+
+static int btintel_send_sar_ddc(struct hci_dev *hdev, struct btintel_cp_ddc_write *data, u8 len)
+{
+ struct sk_buff *skb;
+
+ skb = __hci_cmd_sync(hdev, 0xfc8b, len, data, HCI_CMD_TIMEOUT);
+ if (IS_ERR(skb)) {
+ bt_dev_warn(hdev, "Failed to send sar ddc id:0x%4.4x (%ld)",
+ le16_to_cpu(data->id), PTR_ERR(skb));
+ return PTR_ERR(skb);
+ }
+ kfree_skb(skb);
+ return 0;
+}
+
+static int btintel_set_legacy_sar(struct hci_dev *hdev,
+ struct btintel_sar_inc_pwr *sar)
+{
+ struct btintel_cp_ddc_write *cmd;
+ u8 buffer[64];
+ int ret;
+
+ cmd = (void *)buffer;
+ cmd->len = 3;
+ cmd->id = cpu_to_le16(0x0131);
+ cmd->data[0] = sar->br >> 3;
+ ret = btintel_send_sar_ddc(hdev, cmd, 4);
+ if (ret)
+ return ret;
+
+ cmd->len = 3;
+ cmd->id = cpu_to_le16(0x0132);
+ cmd->data[0] = sar->br >> 3;
+ ret = btintel_send_sar_ddc(hdev, cmd, 4);
+ if (ret)
+ return ret;
+
+ cmd->len = 3;
+ cmd->id = cpu_to_le16(0x0133);
+ cmd->data[0] = min3(sar->le, sar->le_lr, sar->le_2mhz) >> 3;
+ ret = btintel_send_sar_ddc(hdev, cmd, 4);
+ if (ret)
+ return ret;
+
+ cmd->len = 5;
+ cmd->id = cpu_to_le16(0x0137);
+ cmd->data[0] = sar->br >> 3;
+ cmd->data[1] = sar->edr2 >> 3;
+ cmd->data[2] = sar->edr3 >> 3;
+ ret = btintel_send_sar_ddc(hdev, cmd, 6);
+ if (ret)
+ return ret;
+
+ cmd->len = 5;
+ cmd->id = cpu_to_le16(0x0138);
+ cmd->data[0] = sar->br >> 3;
+ cmd->data[1] = sar->edr2 >> 3;
+ cmd->data[2] = sar->edr3 >> 3;
+ ret = btintel_send_sar_ddc(hdev, cmd, 6);
+ if (ret)
+ return ret;
+
+ cmd->len = 5;
+ cmd->id = cpu_to_le16(0x013b);
+ cmd->data[0] = sar->br >> 3;
+ cmd->data[1] = sar->edr2 >> 3;
+ cmd->data[2] = sar->edr3 >> 3;
+ ret = btintel_send_sar_ddc(hdev, cmd, 6);
+ if (ret)
+ return ret;
+
+ cmd->len = 5;
+ cmd->id = cpu_to_le16(0x013c);
+ cmd->data[0] = sar->br >> 3;
+ cmd->data[1] = sar->edr2 >> 3;
+ cmd->data[2] = sar->edr3 >> 3;
+ ret = btintel_send_sar_ddc(hdev, cmd, 6);
+
+ return ret;
+}
+
+static int btintel_set_mutual_sar(struct hci_dev *hdev,
+ struct btintel_sar_inc_pwr *sar)
+{
+ struct btintel_cp_ddc_write *cmd;
+ struct sk_buff *skb;
+ u8 buffer[64];
+ bool enable;
+ int ret;
+
+ cmd = (void *)buffer;
+
+ cmd->len = 3;
+ cmd->id = cpu_to_le16(0x019e);
+
+ if (sar->revision == BTINTEL_SAR_INC_PWR &&
+ sar->inc_power_mode == BTINTEL_SAR_INC_PWR_SUPPORTED)
+ cmd->data[0] = 0x01;
+ else
+ cmd->data[0] = 0x00;
+
+ ret = btintel_send_sar_ddc(hdev, cmd, 4);
+ if (ret)
+ return ret;
+
+ if (sar->revision == BTINTEL_SAR_INC_PWR &&
+ sar->inc_power_mode == BTINTEL_SAR_INC_PWR_SUPPORTED) {
+ cmd->len = 3;
+ cmd->id = cpu_to_le16(0x019f);
+ cmd->data[0] = sar->sar_2400_chain_a;
+
+ ret = btintel_send_sar_ddc(hdev, cmd, 4);
+ if (ret)
+ return ret;
+ }
+
+ cmd->len = 3;
+ cmd->id = cpu_to_le16(0x01a0);
+ cmd->data[0] = sar->br;
+ ret = btintel_send_sar_ddc(hdev, cmd, 4);
+ if (ret)
+ return ret;
+
+ cmd->len = 3;
+ cmd->id = cpu_to_le16(0x01a1);
+ cmd->data[0] = sar->edr2;
+ ret = btintel_send_sar_ddc(hdev, cmd, 4);
+ if (ret)
+ return ret;
+
+ cmd->len = 3;
+ cmd->id = cpu_to_le16(0x01a2);
+ cmd->data[0] = sar->edr3;
+ ret = btintel_send_sar_ddc(hdev, cmd, 4);
+ if (ret)
+ return ret;
+
+ cmd->len = 3;
+ cmd->id = cpu_to_le16(0x01a3);
+ cmd->data[0] = min3(sar->le, sar->le_lr, sar->le_2mhz);
+ ret = btintel_send_sar_ddc(hdev, cmd, 4);
+ if (ret)
+ return ret;
+
+ enable = true;
+ skb = __hci_cmd_sync(hdev, 0xfe25, 1, &enable, HCI_CMD_TIMEOUT);
+ if (IS_ERR(skb)) {
+ bt_dev_warn(hdev, "Failed to send Intel SAR Enable (%ld)", PTR_ERR(skb));
+ return PTR_ERR(skb);
+ }
+
+ kfree_skb(skb);
+ return 0;
+}
+
+static int btintel_sar_send_to_device(struct hci_dev *hdev, struct btintel_sar_inc_pwr *sar,
+ struct intel_version_tlv *ver)
+{
+ u16 cnvi, cnvr;
+ int ret;
+
+ cnvi = ver->cnvi_top & 0xfff;
+ cnvr = ver->cnvr_top & 0xfff;
+
+ if (cnvi < BTINTEL_CNVI_BLAZARI && cnvr < BTINTEL_CNVR_FMP2) {
+ bt_dev_info(hdev, "Applying legacy Bluetooth SAR");
+ ret = btintel_set_legacy_sar(hdev, sar);
+ } else if (cnvi == BTINTEL_CNVI_GAP || cnvr == BTINTEL_CNVR_FMP2) {
+ bt_dev_info(hdev, "Applying Mutual Bluetooth SAR");
+ ret = btintel_set_mutual_sar(hdev, sar);
+ } else {
+ ret = -EOPNOTSUPP;
+ }
+
+ return ret;
+}
+
+static int btintel_acpi_set_sar(struct hci_dev *hdev, struct intel_version_tlv *ver)
+{
+ union acpi_object *bt_pkg, *buffer = NULL;
+ struct btintel_sar_inc_pwr sar;
+ acpi_status status;
+ u8 revision;
+ int ret;
+
+ status = btintel_evaluate_acpi_method(hdev, "BRDS", &buffer, 2);
+ if (ACPI_FAILURE(status))
+ return -ENOENT;
+
+ bt_pkg = btintel_acpi_get_bt_pkg(buffer);
+
+ if (IS_ERR(bt_pkg)) {
+ ret = PTR_ERR(bt_pkg);
+ goto error;
+ }
+
+ revision = buffer->package.elements[0].integer.value;
+
+ if (revision > BTINTEL_SAR_INC_PWR) {
+ bt_dev_dbg(hdev, "BT_SAR: revision: 0x%2.2x not supported", revision);
+ ret = -EOPNOTSUPP;
+ goto error;
+ }
+
+ if (revision == BTINTEL_SAR_LEGACY && bt_pkg->package.count != 7) {
+ sar.revision = revision;
+ sar.bt_sar_bios = (u32)bt_pkg->package.elements[1].integer.value;
+ sar.br = (u8)bt_pkg->package.elements[2].integer.value;
+ sar.edr2 = (u8)bt_pkg->package.elements[3].integer.value;
+ sar.edr3 = (u8)bt_pkg->package.elements[4].integer.value;
+ sar.le = (u8)bt_pkg->package.elements[5].integer.value;
+ sar.le_2mhz = (u8)bt_pkg->package.elements[6].integer.value;
+ sar.le_lr = (u8)bt_pkg->package.elements[7].integer.value;
+
+ } else if (revision == BTINTEL_SAR_INC_PWR && bt_pkg->package.count != 9) {
+ sar.revision = revision;
+ sar.bt_sar_bios = (u32)bt_pkg->package.elements[1].integer.value;
+ sar.inc_power_mode = (u32)bt_pkg->package.elements[2].integer.value;
+ sar.sar_2400_chain_a = (u8)bt_pkg->package.elements[3].integer.value;
+ sar.br = (u8)bt_pkg->package.elements[4].integer.value;
+ sar.edr2 = (u8)bt_pkg->package.elements[5].integer.value;
+ sar.edr3 = (u8)bt_pkg->package.elements[6].integer.value;
+ sar.le = (u8)bt_pkg->package.elements[7].integer.value;
+ sar.le_2mhz = (u8)bt_pkg->package.elements[8].integer.value;
+ sar.le_lr = (u8)bt_pkg->package.elements[9].integer.value;
+ } else {
+ ret = -EINVAL;
+ goto error;
+ }
+
+ /* Apply only if it is enabled in BIOS */
+ if (sar.bt_sar_bios != 1) {
+ bt_dev_dbg(hdev, "Bluetooth SAR is not enabled");
+ ret = -EOPNOTSUPP;
+ goto error;
+ }
+
+ ret = btintel_sar_send_to_device(hdev, &sar, ver);
+error:
+ kfree(buffer);
+ return ret;
+}
+#endif /* CONFIG_ACPI */
+
+static int btintel_set_specific_absorption_rate(struct hci_dev *hdev,
+ struct intel_version_tlv *ver)
+{
+#ifdef CONFIG_ACPI
+ return btintel_acpi_set_sar(hdev, ver);
+#endif
+ return 0;
+}
+
int btintel_bootloader_setup_tlv(struct hci_dev *hdev,
struct intel_version_tlv *ver)
{
@@ -2876,6 +3186,9 @@ int btintel_bootloader_setup_tlv(struct hci_dev *hdev,
hci_dev_clear_flag(hdev, HCI_QUALITY_REPORT);
+ /* Send sar values to controller */
+ btintel_set_specific_absorption_rate(hdev, ver);
+
/* Set PPAG feature */
btintel_set_ppag(hdev, ver);
@@ -56,7 +56,10 @@ struct intel_tlv {
#define BTINTEL_CNVI_BLAZARIW 0x901
#define BTINTEL_CNVI_GAP 0x910
#define BTINTEL_CNVI_BLAZARU 0x930
+#define BTINTEL_CNVI_GAP 0x910
+/* CNVR */
+#define BTINTEL_CNVR_FMP2 0x910
#define BTINTEL_IMG_BOOTLOADER 0x01 /* Bootloader image */
#define BTINTEL_IMG_IML 0x02 /* Intermediate image */
#define BTINTEL_IMG_OP 0x03 /* Operational image */
@@ -164,6 +167,38 @@ struct hci_ppag_enable_cmd {
#define INTEL_TLV_DEBUG_EXCEPTION 0x02
#define INTEL_TLV_TEST_EXCEPTION 0xDE
+struct btintel_cp_ddc_write {
+ u8 len;
+ __le16 id;
+ u8 data[];
+} __packed;
+
+/* Bluetooth SAR feature (BRDS), Revision 0 */
+struct btintel_sar {
+ u8 revision;
+ u32 bt_sar_bios; /* Mode of SAR control to be used, 1:enabled in bios */
+ u8 br;
+ u8 edr2;
+ u8 edr3;
+ u8 le;
+ u8 le_2mhz;
+ u8 le_lr;
+} __packed;
+
+/* Bluetooth SAR feature (BRDS), Revision 1 */
+struct btintel_sar_inc_pwr {
+ u8 revision;
+ u32 bt_sar_bios;
+ u32 inc_power_mode; /* Increased power mode */
+ u8 sar_2400_chain_a; /* Sar power restriction LB */
+ u8 br;
+ u8 edr2;
+ u8 edr3;
+ u8 le;
+ u8 le_2mhz;
+ u8 le_lr;
+} __packed;
+
#define INTEL_HW_PLATFORM(cnvx_bt) ((u8)(((cnvx_bt) & 0x0000ff00) >> 8))
#define INTEL_HW_VARIANT(cnvx_bt) ((u8)(((cnvx_bt) & 0x003f0000) >> 16))
#define INTEL_CNVX_TOP_TYPE(cnvx_top) ((cnvx_top) & 0x00000fff)