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Thu, 13 Mar 2025 04:41:43 -0700 (PDT) X-Google-Smtp-Source: AGHT+IH4KS059o50FJ3zNErZOLROVvjQZDc2HgJ5OaS3d/rE1XNS/o6bFbi0r6LR6J9lgfSFiRTe6g== X-Received: by 2002:a05:6a21:a4a:b0:1f5:769a:a4c0 with SMTP id adf61e73a8af0-1f58cb40d0fmr19674070637.22.1741866102667; Thu, 13 Mar 2025 04:41:42 -0700 (PDT) Received: from hu-krichai-hyd.qualcomm.com ([202.46.23.25]) by smtp.gmail.com with ESMTPSA id 41be03b00d2f7-af56ea964e3sm1063219a12.76.2025.03.13.04.41.37 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 13 Mar 2025 04:41:42 -0700 (PDT) From: Krishna Chaitanya Chundru Date: Thu, 13 Mar 2025 17:10:17 +0530 Subject: [PATCH v2 10/10] wifi: ath11k: add support for MHI bandwidth scaling Precedence: bulk X-Mailing-List: linux-arm-msm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-Id: <20250313-mhi_bw_up-v2-10-869ca32170bf@oss.qualcomm.com> References: <20250313-mhi_bw_up-v2-0-869ca32170bf@oss.qualcomm.com> In-Reply-To: <20250313-mhi_bw_up-v2-0-869ca32170bf@oss.qualcomm.com> To: Bjorn Helgaas , =?utf-8?q?Ilpo_J=C3=A4rvinen?= , Jingoo Han , Manivannan Sadhasivam , Lorenzo Pieralisi , =?utf-8?q?Krzysztof_Wilczy=C5=84?= =?utf-8?q?ski?= , Rob Herring , Johannes Berg , Jeff Johnson Cc: linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org, mhi@lists.linux.dev, linux-wireless@vger.kernel.org, ath11k@lists.infradead.org, quic_pyarlaga@quicinc.com, quic_vbadigan@quicinc.com, quic_vpernami@quicinc.com, quic_mrana@quicinc.com, Krishna Chaitanya Chundru , Jeff Johnson , Miaoqing Pan X-Mailer: b4 0.14.1 X-Developer-Signature: v=1; a=ed25519-sha256; t=1741866038; l=2735; i=krishna.chundru@oss.qualcomm.com; s=20230907; h=from:subject:message-id; bh=UDj4phVy/DG+9hjqxt6EGxZVpcx8i+kJ4nOzNceABAI=; b=hqdCuLeJn0OqieMuIehjgOVSVH10bKZwuK9rz+XDm+BSXBAIpRQvbjfXjpv4/+/BYkNxW94aN OFUd0jheytFBkp8l/OA96dvuqcapnrWdXf6JwA+9nMflIMTRzatgsbn X-Developer-Key: i=krishna.chundru@oss.qualcomm.com; a=ed25519; pk=10CL2pdAKFyzyOHbfSWHCD0X0my7CXxj8gJScmn1FAg= X-Authority-Analysis: v=2.4 cv=PtWTbxM3 c=1 sm=1 tr=0 ts=67d2c477 cx=c_pps a=RP+M6JBNLl+fLTcSJhASfg==:117 a=ZePRamnt/+rB5gQjfz0u9A==:17 a=IkcTkHD0fZMA:10 a=Vs1iUdzkB0EA:10 a=COk6AnOGAAAA:8 a=PcFPl4qhhl0nOZx1bFwA:9 a=QEXdDO2ut3YA:10 a=iS9zxrgQBfv6-_F4QbHw:22 a=TjNXssC_j7lpFel5tvFf:22 X-Proofpoint-GUID: CJNGlFeo9ayboOQZSOEYbYXBLdR7UeSq X-Proofpoint-ORIG-GUID: CJNGlFeo9ayboOQZSOEYbYXBLdR7UeSq X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1093,Hydra:6.0.680,FMLib:17.12.68.34 definitions=2025-03-13_05,2025-03-11_02,2024-11-22_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 lowpriorityscore=0 mlxscore=0 mlxlogscore=999 impostorscore=0 spamscore=0 adultscore=0 phishscore=0 bulkscore=0 clxscore=1015 malwarescore=0 suspectscore=0 classifier=spam authscore=0 authtc=n/a authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.19.0-2502280000 definitions=main-2503130092 From: Miaoqing Pan Add support for MHI bandwidth scaling, which will reduce power consumption if WLAN operates with lower bandwidth. This feature is only enabled for QCA6390. Tested-on: WCN6855 hw2.1 PCI WLAN.HSP.1.1-04546-QCAHSPSWPL_V1_V2_SILICONZ_IOE-1 Signed-off-by: Miaoqing Pan --- drivers/net/wireless/ath/ath11k/mhi.c | 41 +++++++++++++++++++++++++++++++++++ 1 file changed, 41 insertions(+) diff --git a/drivers/net/wireless/ath/ath11k/mhi.c b/drivers/net/wireless/ath/ath11k/mhi.c index 6e45f464a429..74769c0993ae 100644 --- a/drivers/net/wireless/ath/ath11k/mhi.c +++ b/drivers/net/wireless/ath/ath11k/mhi.c @@ -20,6 +20,7 @@ #define MHI_TIMEOUT_DEFAULT_MS 20000 #define RDDM_DUMP_SIZE 0x420000 #define MHI_CB_INVALID 0xff +#define MHI_BW_SCALE_CHAN_DB 126 static const struct mhi_channel_config ath11k_mhi_channels_qca6390[] = { { @@ -73,6 +74,17 @@ static struct mhi_event_config ath11k_mhi_events_qca6390[] = { .client_managed = false, .offload_channel = false, }, + { + .num_elements = 8, + .irq_moderation_ms = 0, + .irq = 1, + .mode = MHI_DB_BRST_DISABLE, + .data_type = MHI_ER_BW_SCALE, + .priority = 2, + .hardware_event = false, + .client_managed = false, + .offload_channel = false, + }, }; static const struct mhi_controller_config ath11k_mhi_config_qca6390 = { @@ -313,6 +325,33 @@ static void ath11k_mhi_op_write_reg(struct mhi_controller *mhi_cntrl, writel(val, addr); } +static int ath11k_mhi_op_get_misc_doorbell(struct mhi_controller *mhi_cntrl, + enum mhi_er_data_type type) +{ + if (type == MHI_ER_BW_SCALE) + return MHI_BW_SCALE_CHAN_DB; + + return -EINVAL; +} + +static int ath11k_mhi_op_bw_scale(struct mhi_controller *mhi_cntrl, + struct mhi_link_info *link_info) +{ + enum pci_bus_speed speed = pci_lnkctl2_bus_speed(link_info->target_link_speed); + struct ath11k_base *ab = dev_get_drvdata(mhi_cntrl->cntrl_dev); + struct pci_dev *pci_dev = to_pci_dev(ab->dev); + struct pci_dev *pdev; + + if (!pci_dev) + return -EINVAL; + + pdev = pci_upstream_bridge(pci_dev); + if (!pdev) + return -ENODEV; + + return pcie_set_target_speed(pdev, speed, true); +} + static int ath11k_mhi_read_addr_from_dt(struct mhi_controller *mhi_ctrl) { struct device_node *np; @@ -389,6 +428,8 @@ int ath11k_mhi_register(struct ath11k_pci *ab_pci) mhi_ctrl->status_cb = ath11k_mhi_op_status_cb; mhi_ctrl->read_reg = ath11k_mhi_op_read_reg; mhi_ctrl->write_reg = ath11k_mhi_op_write_reg; + mhi_ctrl->bw_scale = ath11k_mhi_op_bw_scale; + mhi_ctrl->get_misc_doorbell = ath11k_mhi_op_get_misc_doorbell; switch (ab->hw_rev) { case ATH11K_HW_QCN9074_HW10: