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[86.26.103.58]) by smtp.gmail.com with ESMTPSA id m2-20020a7bce02000000b003b483000583sm2084767wmc.48.2022.09.16.06.53.53 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 16 Sep 2022 06:53:54 -0700 (PDT) From: Srinivas Kandagatla To: vkoul@kernel.org Subject: [PATCH v2 1/2] soundwire: qcom: update status from device id 1 Date: Fri, 16 Sep 2022 14:53:51 +0100 Message-Id: <20220916135352.19114-1-srinivas.kandagatla@linaro.org> X-Mailer: git-send-email 2.21.0 MIME-Version: 1.0 Cc: alsa-devel@alsa-project.org, linux-arm-msm@vger.kernel.org, pierre-louis.bossart@linux.intel.com, linux-kernel@vger.kernel.org, Srinivas Kandagatla , sanyog.r.kale@intel.com, yung-chuan.liao@linux.intel.com, quic_srivasam@quicinc.com X-BeenThere: alsa-devel@alsa-project.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: "Alsa-devel mailing list for ALSA developers - http://www.alsa-project.org" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: alsa-devel-bounces@alsa-project.org Sender: "Alsa-devel" By default autoenumeration is enabled on QCom SoundWire controller which means the core should not be dealing with device 0 w.r.t enumeration. During Enumeration if SoundWire core sees status[0] as SDW_SLAVE_ATTACHED and start programming the device id, however reading DEVID registers return zeros which does not match to any of the slaves in the list and the core attempts to park this device to Group 13. This results in adding SoundWire device with enumeration address 0:0:0:0 Fix this by not passing device 0 status to SoundWire core. Signed-off-by: Srinivas Kandagatla Reviewed-by: Pierre-Louis Bossart --- Changes since v1: - updated change log and split patch in to two as suggested by Pierre drivers/soundwire/qcom.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/soundwire/qcom.c b/drivers/soundwire/qcom.c index e7f95c41eb70..d3ce580cdeaf 100644 --- a/drivers/soundwire/qcom.c +++ b/drivers/soundwire/qcom.c @@ -448,7 +448,7 @@ static void qcom_swrm_get_device_status(struct qcom_swrm_ctrl *ctrl) ctrl->reg_read(ctrl, SWRM_MCP_SLV_STATUS, &val); ctrl->slave_status = val; - for (i = 0; i <= SDW_MAX_DEVICES; i++) { + for (i = 1; i <= SDW_MAX_DEVICES; i++) { u32 s; s = (val >> (i * 2));