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charset="utf-8" Add documentation for the qcom,swr-master-ee-val Device Tree property used by Qualcomm SoundWire masters to describe the execution-environment value for interrupt routing. This property allows platform DTs to specify the EE value used to direct SoundWire master interrupts to the appropriate CPU target. Signed-off-by: Mohammad Rafi Shaik --- .../devicetree/bindings/soundwire/qcom,soundwire.yaml | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/Documentation/devicetree/bindings/soundwire/qcom,soundwire.yam= l b/Documentation/devicetree/bindings/soundwire/qcom,soundwire.yaml index 9447a2f37..5b06cc1a5 100644 --- a/Documentation/devicetree/bindings/soundwire/qcom,soundwire.yaml +++ b/Documentation/devicetree/bindings/soundwire/qcom,soundwire.yaml @@ -215,6 +215,12 @@ properties: maximum: 4 - const: 0xff =20 + qcom,swr-master-ee-val: + $ref: /schemas/types.yaml#/definitions/uint8-array + description: + Execution-environment value used to route SoundWire master + interrupts to CPU0 or CPU1. + label: maxItems: 1 =20 --=20 2.34.1 From nobody Thu Jun 25 00:33:56 2026 Received: from mx0b-0031df01.pphosted.com (mx0b-0031df01.pphosted.com [205.220.180.131]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 28FD03D564B for ; 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Mon, 08 Jun 2026 10:54:10 -0700 (PDT) X-Received: by 2002:a05:6a20:c783:b0:3b4:8f4a:3bc6 with SMTP id adf61e73a8af0-3b4ccff305bmr20041798637.32.1780941250394; Mon, 08 Jun 2026 10:54:10 -0700 (PDT) Received: from hu-mohs-hyd.qualcomm.com ([202.46.23.25]) by smtp.gmail.com with ESMTPSA id 41be03b00d2f7-c85df0a4afdsm18975720a12.19.2026.06.08.10.54.06 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 08 Jun 2026 10:54:10 -0700 (PDT) From: Mohammad Rafi Shaik To: Rob Herring , Krzysztof Kozlowski , Conor Dooley , Srinivas Kandagatla , Vinod Koul , Bard Liao , Rao Mandadapu Cc: Pierre-Louis Bossart , linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-sound@vger.kernel.org Subject: [PATCH v1 2/2] soundwire: qcom: add EE-aware register layout and cpu selection Date: Mon, 8 Jun 2026 23:23:45 +0530 Message-Id: <20260608175345.3118060-3-mohammad.rafi.shaik@oss.qualcomm.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20260608175345.3118060-1-mohammad.rafi.shaik@oss.qualcomm.com> References: <20260608175345.3118060-1-mohammad.rafi.shaik@oss.qualcomm.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwNjA4MDE2OCBTYWx0ZWRfX53C6d9AC7CO/ wJh2XnytL8hW6cmJVV0q0G3HxCB63Rb0iEQ4zNiPClNgWy4xzDfGUuun0vC/CvL55uwqwm/kvDa isZ0bcl6G9WNS10dYvAsMtG7qyoeGaP7DCSUFLkp0myXYtgbgFoITvRG2MPiNLz5VD7tEQwckhN 13miuj6tdrMb6W7CPGtEz2x+lNYwzlU3yKTuXgv0lO+SMyOFCwhbqybLP0Y1RhnQWFq/S+85WbW 9XeniAAWA83siPbsNwHMGmOUOtsTn/XRfcPyIeiOqCMoCfvceavOE6K3tH8UO6gG3XgYwm4qwax p5cZueT3T34Zx3dNKpkIeSgYGp/tQ4xauLTGWXwget3B5FKrEYPeRVeX2io8SI6sv2WlrL6kgno 0htPPrWs0McFFfyD6R9RV5yUqCPhGEoSazhSjo9d2vFNxIHRrG8soacvcdGuOm0GYu5u9Y+oLQ+ BGEcgiUVzBBYiJ9zhLQ== X-Authority-Analysis: v=2.4 cv=V6BNF+ni c=1 sm=1 tr=0 ts=6a2701c4 cx=c_pps a=Oh5Dbbf/trHjhBongsHeRQ==:117 a=ZePRamnt/+rB5gQjfz0u9A==:17 a=FelO9ux0wxsA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=_glEPmIy2e8OvE2BGh3C:22 a=EUspDBNiAAAA:8 a=pCi666Mk7v47pcsjtEsA:9 a=_Vgx9l1VpLgwpw_dHYaR:22 X-Proofpoint-GUID: DB80l0z7CHa90TIkFYozi3073b2pfVNi X-Proofpoint-ORIG-GUID: DB80l0z7CHa90TIkFYozi3073b2pfVNi X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1143,Hydra:6.1.125,FMLib:17.12.100.49 definitions=2026-06-08_04,2026-06-05_02,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 adultscore=0 spamscore=0 malwarescore=0 clxscore=1015 lowpriorityscore=0 suspectscore=0 bulkscore=0 impostorscore=0 phishscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2605210000 definitions=main-2606080168 Content-Type: text/plain; charset="utf-8" Some Qualcomm SoundWire masters expose interrupt, FIFO and status registers in EE-specific register windows on v2.0 and newer hardware. Add support for selecting the SoundWire execution environment from DT and use it to program the correct register window for the active EE. The driver now reads the EE value from the new qcom,swr-master-ee-val property, with qcom,ee as a fallback for backward compatibility. For v2.0+ hardware, the IRQ/FIFO/status register layout is adjusted by the EE window stride so the driver programs the correct bank for the selected EE. The interrupt enable path is also updated to always use the selected EE window. This change allows SoundWire interrupt routing and register accesses to work correctly on platforms where the master is not mapped to the default EE1 window. In Shikra, the soundwire execution environment is set to 0 unlike other Qualcomm boards. Signed-off-by: Mohammad Rafi Shaik --- drivers/soundwire/qcom.c | 78 +++++++++++++++++++++++++++++++++------- 1 file changed, 65 insertions(+), 13 deletions(-) diff --git a/drivers/soundwire/qcom.c b/drivers/soundwire/qcom.c index 3d8f5a81e..f4b8ff77b 100644 --- a/drivers/soundwire/qcom.c +++ b/drivers/soundwire/qcom.c @@ -26,6 +26,7 @@ #define SWRM_COMP_STATUS 0x014 #define SWRM_LINK_MANAGER_EE 0x018 #define SWRM_EE_CPU 1 +#define SWRM_MAX_EE 1 #define SWRM_FRM_GEN_ENABLED BIT(0) #define SWRM_VERSION_1_3_0 0x01030000 #define SWRM_VERSION_1_5_1 0x01050001 @@ -118,6 +119,7 @@ #define SWRM_V2_0_CLK_CTRL 0x5060 #define SWRM_V2_0_CLK_CTRL_CLK_START BIT(0) #define SWRM_V2_0_LINK_STATUS 0x5064 +#define SWRM_V2_REG_EE_STRIDE 0x1000 =20 #define SWRM_DP_PORT_CTRL_EN_CHAN_SHFT 0x18 #define SWRM_DP_PORT_CTRL_OFFSET2_SHFT 0x10 @@ -202,6 +204,7 @@ struct qcom_swrm_ctrl { struct mutex port_lock; struct clk *hclk; int irq; + u32 ee; unsigned int version; int wake_irq; int num_din_ports; @@ -222,6 +225,7 @@ struct qcom_swrm_ctrl { u32 slave_status; u32 wr_fifo_depth; bool clock_stop_not_supported; + unsigned int reg_layout_local[SWRM_OFFSET_DP_SAMPLECTRL2_BANK + 1]; }; =20 struct qcom_swrm_data { @@ -328,6 +332,36 @@ static const struct qcom_swrm_data swrm_v3_0_data =3D { }; #define to_qcom_sdw(b) container_of(b, struct qcom_swrm_ctrl, bus) =20 +static void qcom_swrm_set_ee_register_layout(struct qcom_swrm_ctrl *ctrl, + const struct qcom_swrm_data *data) +{ + int ee_offset; + + memcpy(ctrl->reg_layout_local, data->reg_layout, + sizeof(ctrl->reg_layout_local)); + ctrl->reg_layout =3D ctrl->reg_layout_local; + + if (ctrl->version < SWRM_VERSION_2_0_0) + return; + + /* + * Current register constants map EE1. For EE0, use the EE register + * window stride to access status/IRQ/FIFO registers. + */ + ee_offset =3D ((int)ctrl->ee - SWRM_EE_CPU) * SWRM_V2_REG_EE_STRIDE; + if (!ee_offset) + return; + + ctrl->reg_layout_local[SWRM_REG_FRAME_GEN_ENABLED] +=3D ee_offset; + ctrl->reg_layout_local[SWRM_REG_INTERRUPT_STATUS] +=3D ee_offset; + ctrl->reg_layout_local[SWRM_REG_INTERRUPT_CLEAR] +=3D ee_offset; + ctrl->reg_layout_local[SWRM_REG_INTERRUPT_CPU_EN] +=3D ee_offset; + ctrl->reg_layout_local[SWRM_REG_CMD_FIFO_WR_CMD] +=3D ee_offset; + ctrl->reg_layout_local[SWRM_REG_CMD_FIFO_RD_CMD] +=3D ee_offset; + ctrl->reg_layout_local[SWRM_REG_CMD_FIFO_STATUS] +=3D ee_offset; + ctrl->reg_layout_local[SWRM_REG_CMD_FIFO_RD_FIFO_ADDR] +=3D ee_offset; +} + static int qcom_swrm_ahb_reg_read(struct qcom_swrm_ctrl *ctrl, int reg, u32 *val) { @@ -904,12 +938,13 @@ static int qcom_swrm_init(struct qcom_swrm_ctrl *ctrl) ctrl->reg_write(ctrl, SWRM_MCP_CFG_ADDR, val); =20 if (ctrl->version =3D=3D SWRM_VERSION_1_7_0) { - ctrl->reg_write(ctrl, SWRM_LINK_MANAGER_EE, SWRM_EE_CPU); + ctrl->reg_write(ctrl, SWRM_LINK_MANAGER_EE, ctrl->ee); ctrl->reg_write(ctrl, SWRM_MCP_BUS_CTRL, - SWRM_MCP_BUS_CLK_START << SWRM_EE_CPU); + SWRM_MCP_BUS_CLK_START << ctrl->ee); } else if (ctrl->version >=3D SWRM_VERSION_2_0_0) { - ctrl->reg_write(ctrl, SWRM_LINK_MANAGER_EE, SWRM_EE_CPU); - ctrl->reg_write(ctrl, SWRM_V2_0_CLK_CTRL, + ctrl->reg_write(ctrl, SWRM_LINK_MANAGER_EE, ctrl->ee); + ctrl->reg_write(ctrl, SWRM_V2_0_CLK_CTRL + + ((int)ctrl->ee - SWRM_EE_CPU) * SWRM_V2_REG_EE_STRIDE, SWRM_V2_0_CLK_CTRL_CLK_START); } else { ctrl->reg_write(ctrl, SWRM_MCP_BUS_CTRL, SWRM_MCP_BUS_CLK_START); @@ -935,11 +970,9 @@ static int qcom_swrm_init(struct qcom_swrm_ctrl *ctrl) ctrl->reg_write(ctrl, ctrl->reg_layout[SWRM_REG_INTERRUPT_CLEAR], 0xFFFFFFFF); =20 - /* enable CPU IRQs */ - if (ctrl->mmio) { - ctrl->reg_write(ctrl, ctrl->reg_layout[SWRM_REG_INTERRUPT_CPU_EN], - SWRM_INTERRUPT_STATUS_RMSK); - } + /* enable CPU IRQs for the selected EE window */ + ctrl->reg_write(ctrl, ctrl->reg_layout[SWRM_REG_INTERRUPT_CPU_EN], + SWRM_INTERRUPT_STATUS_RMSK); =20 /* Set IRQ to PULSE */ ctrl->reg_write(ctrl, SWRM_COMP_CFG_ADDR, @@ -1545,7 +1578,22 @@ static int qcom_swrm_probe(struct platform_device *p= dev) return -ENOMEM; =20 data =3D of_device_get_match_data(dev); + ctrl->ee =3D SWRM_EE_CPU; + ret =3D of_property_read_u32(dev->of_node, "qcom,swr-master-ee-val", &ctr= l->ee); + if (ret) + ret =3D of_property_read_u32(dev->of_node, "qcom,ee", &ctrl->ee); + if (ret) + ctrl->ee =3D SWRM_EE_CPU; + if (ctrl->ee > SWRM_MAX_EE) { + dev_warn(dev, "invalid SoundWire EE %u, using EE%u\n", + ctrl->ee, SWRM_EE_CPU); + ctrl->ee =3D SWRM_EE_CPU; + } ctrl->max_reg =3D data->max_reg; + /* + * Defer EE register window selection until HW version is known. + * For v2.0+ the IRQ/FIFO window is EE-banked. + */ ctrl->reg_layout =3D data->reg_layout; ctrl->rows_index =3D sdw_find_row_index(data->default_rows); ctrl->cols_index =3D sdw_find_col_index(data->default_cols); @@ -1623,6 +1671,7 @@ static int qcom_swrm_probe(struct platform_device *pd= ev) prop->default_row =3D data->default_rows; =20 ctrl->reg_read(ctrl, SWRM_COMP_HW_VERSION, &ctrl->version); + qcom_swrm_set_ee_register_layout(ctrl, data); =20 ret =3D devm_request_threaded_irq(dev, ctrl->irq, NULL, qcom_swrm_irq_handler, @@ -1733,16 +1782,19 @@ static int __maybe_unused swrm_runtime_resume(struc= t device *dev) reset_control_reset(ctrl->audio_cgcr); =20 if (ctrl->version =3D=3D SWRM_VERSION_1_7_0) { - ctrl->reg_write(ctrl, SWRM_LINK_MANAGER_EE, SWRM_EE_CPU); + ctrl->reg_write(ctrl, SWRM_LINK_MANAGER_EE, ctrl->ee); ctrl->reg_write(ctrl, SWRM_MCP_BUS_CTRL, - SWRM_MCP_BUS_CLK_START << SWRM_EE_CPU); + SWRM_MCP_BUS_CLK_START << ctrl->ee); } else if (ctrl->version >=3D SWRM_VERSION_2_0_0) { - ctrl->reg_write(ctrl, SWRM_LINK_MANAGER_EE, SWRM_EE_CPU); - ctrl->reg_write(ctrl, SWRM_V2_0_CLK_CTRL, + ctrl->reg_write(ctrl, SWRM_LINK_MANAGER_EE, ctrl->ee); + ctrl->reg_write(ctrl, SWRM_V2_0_CLK_CTRL + + ((int)ctrl->ee - SWRM_EE_CPU) * + SWRM_V2_REG_EE_STRIDE, SWRM_V2_0_CLK_CTRL_CLK_START); } else { ctrl->reg_write(ctrl, SWRM_MCP_BUS_CTRL, SWRM_MCP_BUS_CLK_START); } + ctrl->reg_write(ctrl, ctrl->reg_layout[SWRM_REG_INTERRUPT_CLEAR], SWRM_INTERRUPT_STATUS_MASTER_CLASH_DET); =20 --=20 2.34.1