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Tue, 6 Feb 2024 05:19:22 GMT Received: from hu-kriskura-hyd.qualcomm.com (10.80.80.8) by nalasex01a.na.qualcomm.com (10.47.209.196) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1118.40; Mon, 5 Feb 2024 21:19:17 -0800 From: Krishna Kurapati To: Krzysztof Kozlowski , Rob Herring , Bjorn Andersson , Wesley Cheng , Konrad Dybcio , "Greg Kroah-Hartman" , Conor Dooley , Thinh Nguyen , Felipe Balbi CC: , , , , , , Krishna Kurapati Subject: [PATCH v14 7/9] usb: dwc3: qcom: Refactor IRQ handling in glue driver Date: Tue, 6 Feb 2024 10:48:23 +0530 Message-ID: <20240206051825.1038685-8-quic_kriskura@quicinc.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240206051825.1038685-1-quic_kriskura@quicinc.com> References: <20240206051825.1038685-1-quic_kriskura@quicinc.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-ClientProxiedBy: nasanex01b.na.qualcomm.com (10.46.141.250) To nalasex01a.na.qualcomm.com (10.47.209.196) X-QCInternal: smtphost X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=5800 signatures=585085 X-Proofpoint-ORIG-GUID: mzYQx3B5EGQj9NX0pZIjfNz6wlnx-WS9 X-Proofpoint-GUID: mzYQx3B5EGQj9NX0pZIjfNz6wlnx-WS9 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.272,Aquarius:18.0.1011,Hydra:6.0.619,FMLib:17.11.176.26 definitions=2024-02-05_18,2024-01-31_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 adultscore=0 phishscore=0 mlxlogscore=794 spamscore=0 lowpriorityscore=0 impostorscore=0 bulkscore=0 clxscore=1015 malwarescore=0 suspectscore=0 mlxscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2401310000 definitions=main-2402060035 X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: 1790125699325403549 X-GMAIL-MSGID: 1790125699325403549 On multiport supported controllers, each port has its own DP/DM and SS (if super speed capable) interrupts. As per the bindings, their interrupt names differ from standard ones having "_x" added as suffix (x indicates port number). Refactor dwc3_qcom_setup_irq() call to parse multiport interrupts along with non-multiport ones. Signed-off-by: Krishna Kurapati Reviewed-by: Bjorn Andersson Acked-by: Thinh Nguyen --- drivers/usb/dwc3/dwc3-qcom.c | 222 +++++++++++++++++++++++++---------- 1 file changed, 161 insertions(+), 61 deletions(-) diff --git a/drivers/usb/dwc3/dwc3-qcom.c b/drivers/usb/dwc3/dwc3-qcom.c index 08df29584366..a20d63a791bd 100644 --- a/drivers/usb/dwc3/dwc3-qcom.c +++ b/drivers/usb/dwc3/dwc3-qcom.c @@ -53,17 +53,33 @@ #define APPS_USB_AVG_BW 0 #define APPS_USB_PEAK_BW MBps_to_icc(40) +#define NUM_PHY_IRQ 4 + +enum dwc3_qcom_phy_index { + DP_HS_PHY_IRQ_INDEX, + DM_HS_PHY_IRQ_INDEX, + SS_PHY_IRQ_INDEX, + QUSB2_PHY_IRQ_INDEX, +}; + struct dwc3_acpi_pdata { u32 qscratch_base_offset; u32 qscratch_base_size; u32 dwc3_core_base_size; - int qusb2_phy_irq_index; - int dp_hs_phy_irq_index; - int dm_hs_phy_irq_index; - int ss_phy_irq_index; + /* + * The phy_irq_index corresponds to ACPI indexes of (in order) + * DP/DM/SS/QUSB2 IRQ's respectively. + */ + int phy_irq_index[NUM_PHY_IRQ]; bool is_urs; }; +struct dwc3_qcom_port { + int dp_hs_phy_irq; + int dm_hs_phy_irq; + int ss_phy_irq; +}; + struct dwc3_qcom { struct device *dev; void __iomem *qscratch_base; @@ -74,9 +90,7 @@ struct dwc3_qcom { struct reset_control *resets; int qusb2_phy_irq; - int dp_hs_phy_irq; - int dm_hs_phy_irq; - int ss_phy_irq; + struct dwc3_qcom_port port_info[DWC3_MAX_PORTS]; enum usb_device_speed usb2_speed; struct extcon_dev *edev; @@ -91,6 +105,7 @@ struct dwc3_qcom { bool pm_suspended; struct icc_path *icc_path_ddr; struct icc_path *icc_path_apps; + u8 num_ports; }; static inline void dwc3_qcom_setbits(void __iomem *base, u32 offset, u32 val) @@ -375,16 +390,16 @@ static void dwc3_qcom_disable_interrupts(struct dwc3_qcom *qcom) dwc3_qcom_disable_wakeup_irq(qcom->qusb2_phy_irq); if (qcom->usb2_speed == USB_SPEED_LOW) { - dwc3_qcom_disable_wakeup_irq(qcom->dm_hs_phy_irq); + dwc3_qcom_disable_wakeup_irq(qcom->port_info[0].dm_hs_phy_irq); } else if ((qcom->usb2_speed == USB_SPEED_HIGH) || (qcom->usb2_speed == USB_SPEED_FULL)) { - dwc3_qcom_disable_wakeup_irq(qcom->dp_hs_phy_irq); + dwc3_qcom_disable_wakeup_irq(qcom->port_info[0].dp_hs_phy_irq); } else { - dwc3_qcom_disable_wakeup_irq(qcom->dp_hs_phy_irq); - dwc3_qcom_disable_wakeup_irq(qcom->dm_hs_phy_irq); + dwc3_qcom_disable_wakeup_irq(qcom->port_info[0].dp_hs_phy_irq); + dwc3_qcom_disable_wakeup_irq(qcom->port_info[0].dm_hs_phy_irq); } - dwc3_qcom_disable_wakeup_irq(qcom->ss_phy_irq); + dwc3_qcom_disable_wakeup_irq(qcom->port_info[0].ss_phy_irq); } static void dwc3_qcom_enable_interrupts(struct dwc3_qcom *qcom) @@ -401,20 +416,20 @@ static void dwc3_qcom_enable_interrupts(struct dwc3_qcom *qcom) */ if (qcom->usb2_speed == USB_SPEED_LOW) { - dwc3_qcom_enable_wakeup_irq(qcom->dm_hs_phy_irq, - IRQ_TYPE_EDGE_FALLING); + dwc3_qcom_enable_wakeup_irq(qcom->port_info[0].dm_hs_phy_irq, + IRQ_TYPE_EDGE_FALLING); } else if ((qcom->usb2_speed == USB_SPEED_HIGH) || (qcom->usb2_speed == USB_SPEED_FULL)) { - dwc3_qcom_enable_wakeup_irq(qcom->dp_hs_phy_irq, - IRQ_TYPE_EDGE_FALLING); + dwc3_qcom_enable_wakeup_irq(qcom->port_info[0].dp_hs_phy_irq, + IRQ_TYPE_EDGE_FALLING); } else { - dwc3_qcom_enable_wakeup_irq(qcom->dp_hs_phy_irq, - IRQ_TYPE_EDGE_RISING); - dwc3_qcom_enable_wakeup_irq(qcom->dm_hs_phy_irq, - IRQ_TYPE_EDGE_RISING); + dwc3_qcom_enable_wakeup_irq(qcom->port_info[0].dp_hs_phy_irq, + IRQ_TYPE_EDGE_RISING); + dwc3_qcom_enable_wakeup_irq(qcom->port_info[0].dm_hs_phy_irq, + IRQ_TYPE_EDGE_RISING); } - dwc3_qcom_enable_wakeup_irq(qcom->ss_phy_irq, 0); + dwc3_qcom_enable_wakeup_irq(qcom->port_info[0].ss_phy_irq, 0); } static int dwc3_qcom_suspend(struct dwc3_qcom *qcom, bool wakeup) @@ -535,6 +550,74 @@ static int dwc3_qcom_get_irq(struct platform_device *pdev, return ret; } +static int dwc3_qcom_get_irq_index(const char *irq_name) +{ + /* + * Parse IRQ index based on prefixes from interrupt name. + * Return -1 incase of an invalid interrupt name. + */ + int irq_index = -1; + + if (strncmp(irq_name, "dp_hs_phy", strlen("dp_hs_phy")) == 0) + irq_index = DP_HS_PHY_IRQ_INDEX; + else if (strncmp(irq_name, "dm_hs_phy", strlen("dm_hs_phy")) == 0) + irq_index = DM_HS_PHY_IRQ_INDEX; + else if (strncmp(irq_name, "ss_phy", strlen("ss_phy")) == 0) + irq_index = SS_PHY_IRQ_INDEX; + else if (strncmp(irq_name, "qusb2_phy", strlen("qusb2_phy")) == 0) + irq_index = QUSB2_PHY_IRQ_INDEX; + return irq_index; +} + +static int dwc3_qcom_get_port_index(const char *irq_name, int irq_index) +{ + int port_index = -1; + + switch (irq_index) { + case DP_HS_PHY_IRQ_INDEX: + if (strcmp(irq_name, "dp_hs_phy_irq") == 0) + port_index = 1; + else + sscanf(irq_name, "dp_hs_phy_%d", &port_index); + break; + case DM_HS_PHY_IRQ_INDEX: + if (strcmp(irq_name, "dm_hs_phy_irq") == 0) + port_index = 1; + else + sscanf(irq_name, "dm_hs_phy_%d", &port_index); + break; + case SS_PHY_IRQ_INDEX: + if (strcmp(irq_name, "ss_phy_irq") == 0) + port_index = 1; + else + sscanf(irq_name, "ss_phy_%d", &port_index); + break; + case QUSB2_PHY_IRQ_INDEX: + port_index = 1; + break; + } + + if (port_index <= 0 || port_index > DWC3_MAX_PORTS) + port_index = -1; + + return port_index; +} + +static int dwc3_qcom_get_acpi_index(struct dwc3_qcom *qcom, int irq_index, + int port_index) +{ + const struct dwc3_acpi_pdata *pdata = qcom->acpi_pdata; + + /* + * Currently multiport supported targets don't have an ACPI variant. + * So return -1 if we are not dealing with first port of the controller. + */ + if (!pdata || port_index != 1) + return -1; + + return pdata->phy_irq_index[irq_index]; +} + static int dwc3_qcom_request_irq(struct dwc3_qcom *qcom, int irq, const char *name) { @@ -554,44 +637,67 @@ static int dwc3_qcom_request_irq(struct dwc3_qcom *qcom, int irq, static int dwc3_qcom_setup_irq(struct platform_device *pdev) { struct dwc3_qcom *qcom = platform_get_drvdata(pdev); - const struct dwc3_acpi_pdata *pdata = qcom->acpi_pdata; + struct device_node *np = pdev->dev.of_node; + const char **irq_names; + int port_index; + int acpi_index; + int irq_count; + int irq_index; int irq; int ret; + int i; - irq = dwc3_qcom_get_irq(pdev, "qusb2_phy", - pdata ? pdata->qusb2_phy_irq_index : -1); - if (irq > 0) { - ret = dwc3_qcom_request_irq(qcom, irq, "hs_phy_irq"); - if (ret) - return ret; - qcom->qusb2_phy_irq = irq; - } + irq_count = of_property_count_strings(np, "interrupt-names"); + if (irq_count < 0) + return -EINVAL; - irq = dwc3_qcom_get_irq(pdev, "dp_hs_phy_irq", - pdata ? pdata->dp_hs_phy_irq_index : -1); - if (irq > 0) { - ret = dwc3_qcom_request_irq(qcom, irq, "dp_hs_phy_irq"); - if (ret) - return ret; - qcom->dp_hs_phy_irq = irq; - } + irq_names = devm_kcalloc(&pdev->dev, irq_count, sizeof(*irq_names), GFP_KERNEL); + if (!irq_names) + return -ENOMEM; - irq = dwc3_qcom_get_irq(pdev, "dm_hs_phy_irq", - pdata ? pdata->dm_hs_phy_irq_index : -1); - if (irq > 0) { - ret = dwc3_qcom_request_irq(qcom, irq, "dm_hs_phy_irq"); - if (ret) - return ret; - qcom->dm_hs_phy_irq = irq; - } + ret = of_property_read_string_array(np, "interrupt-names", + irq_names, irq_count); + if (!ret) + return ret; - irq = dwc3_qcom_get_irq(pdev, "ss_phy_irq", - pdata ? pdata->ss_phy_irq_index : -1); - if (irq > 0) { - ret = dwc3_qcom_request_irq(qcom, irq, "ss_phy_irq"); - if (ret) - return ret; - qcom->ss_phy_irq = irq; + for (i = 0; i < irq_count; i++) { + irq_index = dwc3_qcom_get_irq_index(irq_names[i]); + if (irq_index == -1) { + dev_err(&pdev->dev, "Unknown interrupt-name \"%s\" found\n", irq_names[i]); + continue; + } + port_index = dwc3_qcom_get_port_index(irq_names[i], irq_index); + if (port_index == -1) { + dev_err(&pdev->dev, "Invalid interrupt-name suffix \"%s\"\n", irq_names[i]); + continue; + } + + acpi_index = dwc3_qcom_get_acpi_index(qcom, irq_index, port_index); + + irq = dwc3_qcom_get_irq(pdev, irq_names[i], acpi_index); + if (irq > 0) { + ret = dwc3_qcom_request_irq(qcom, irq, irq_names[i]); + if (ret) + return ret; + + switch (irq_index) { + case DP_HS_PHY_IRQ_INDEX: + qcom->port_info[port_index - 1].dp_hs_phy_irq = irq; + break; + case DM_HS_PHY_IRQ_INDEX: + qcom->port_info[port_index - 1].dm_hs_phy_irq = irq; + break; + case SS_PHY_IRQ_INDEX: + qcom->port_info[port_index - 1].ss_phy_irq = irq; + break; + case QUSB2_PHY_IRQ_INDEX: + qcom->qusb2_phy_irq = irq; + break; + } + + if (qcom->num_ports < port_index) + qcom->num_ports = port_index; + } } return 0; @@ -1053,20 +1159,14 @@ static const struct dwc3_acpi_pdata sdm845_acpi_pdata = { .qscratch_base_offset = SDM845_QSCRATCH_BASE_OFFSET, .qscratch_base_size = SDM845_QSCRATCH_SIZE, .dwc3_core_base_size = SDM845_DWC3_CORE_SIZE, - .qusb2_phy_irq_index = 1, - .dp_hs_phy_irq_index = 4, - .dm_hs_phy_irq_index = 3, - .ss_phy_irq_index = 2 + .phy_irq_index = {4, 3, 2, 1}, }; static const struct dwc3_acpi_pdata sdm845_acpi_urs_pdata = { .qscratch_base_offset = SDM845_QSCRATCH_BASE_OFFSET, .qscratch_base_size = SDM845_QSCRATCH_SIZE, .dwc3_core_base_size = SDM845_DWC3_CORE_SIZE, - .qusb2_phy_irq_index = 1, - .dp_hs_phy_irq_index = 4, - .dm_hs_phy_irq_index = 3, - .ss_phy_irq_index = 2, + .phy_irq_index = {4, 3, 2, 1}, .is_urs = true, };