From patchwork Wed Apr 1 05:15:42 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sandeep Maheswaram X-Patchwork-Id: 11468645 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 3AC2F17EA for ; Wed, 1 Apr 2020 05:17:09 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 19EE92078B for ; Wed, 1 Apr 2020 05:17:09 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731815AbgDAFRF (ORCPT ); Wed, 1 Apr 2020 01:17:05 -0400 Received: from alexa-out-blr-02.qualcomm.com ([103.229.18.198]:50717 "EHLO alexa-out-blr-02.qualcomm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1731802AbgDAFRE (ORCPT ); Wed, 1 Apr 2020 01:17:04 -0400 Received: from ironmsg02-blr.qualcomm.com ([10.86.208.131]) by alexa-out-blr-02.qualcomm.com with ESMTP/TLS/AES256-SHA; 01 Apr 2020 10:46:12 +0530 Received: from c-sanm-linux.qualcomm.com ([10.206.25.31]) by ironmsg02-blr.qualcomm.com with ESMTP; 01 Apr 2020 10:45:52 +0530 Received: by c-sanm-linux.qualcomm.com (Postfix, from userid 2343233) id 495192619; Wed, 1 Apr 2020 10:45:51 +0530 (IST) From: Sandeep Maheswaram To: Andy Gross , Bjorn Andersson , Greg Kroah-Hartman , Rob Herring , Mark Rutland , Felipe Balbi , Stephen Boyd , Doug Anderson , Matthias Kaehlcke Cc: linux-arm-msm@vger.kernel.org, linux-usb@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Manu Gautam , Chandana Kishori Chiluveru , Sandeep Maheswaram Subject: [PATCH v7 1/4] dt-bindings: usb: qcom,dwc3: Introduce interconnect properties for Qualcomm DWC3 driver Date: Wed, 1 Apr 2020 10:45:42 +0530 Message-Id: <1585718145-29537-2-git-send-email-sanm@codeaurora.org> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1585718145-29537-1-git-send-email-sanm@codeaurora.org> References: <1585718145-29537-1-git-send-email-sanm@codeaurora.org> Sender: linux-arm-msm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org Add documentation for the interconnects and interconnect-names properties for USB. Signed-off-by: Sandeep Maheswaram Reviewed-by: Rob Herring Reviewed-by: Stephen Boyd --- Documentation/devicetree/bindings/usb/qcom,dwc3.yaml | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/Documentation/devicetree/bindings/usb/qcom,dwc3.yaml b/Documentation/devicetree/bindings/usb/qcom,dwc3.yaml index 17e22ff..ec1ec47 100644 --- a/Documentation/devicetree/bindings/usb/qcom,dwc3.yaml +++ b/Documentation/devicetree/bindings/usb/qcom,dwc3.yaml @@ -70,6 +70,14 @@ properties: resets: maxItems: 1 + interconnects: + maxItems: 2 + + interconnect-names: + items: + - const: usb-ddr + - const: apps-usb + interrupts: items: - description: The interrupt that is asserted From patchwork Wed Apr 1 05:15:43 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sandeep Maheswaram X-Patchwork-Id: 11468647 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 9383C912 for ; Wed, 1 Apr 2020 05:17:09 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 72B82208E0 for ; Wed, 1 Apr 2020 05:17:09 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731831AbgDAFRI (ORCPT ); Wed, 1 Apr 2020 01:17:08 -0400 Received: from alexa-out-blr-02.qualcomm.com ([103.229.18.198]:14851 "EHLO alexa-out-blr-02.qualcomm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1731744AbgDAFRF (ORCPT ); Wed, 1 Apr 2020 01:17:05 -0400 Received: from ironmsg02-blr.qualcomm.com ([10.86.208.131]) by alexa-out-blr-02.qualcomm.com with ESMTP/TLS/AES256-SHA; 01 Apr 2020 10:46:12 +0530 Received: from c-sanm-linux.qualcomm.com ([10.206.25.31]) by ironmsg02-blr.qualcomm.com with ESMTP; 01 Apr 2020 10:45:53 +0530 Received: by c-sanm-linux.qualcomm.com (Postfix, from userid 2343233) id C99772619; Wed, 1 Apr 2020 10:45:52 +0530 (IST) From: Sandeep Maheswaram To: Andy Gross , Bjorn Andersson , Greg Kroah-Hartman , Rob Herring , Mark Rutland , Felipe Balbi , Stephen Boyd , Doug Anderson , Matthias Kaehlcke Cc: linux-arm-msm@vger.kernel.org, linux-usb@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Manu Gautam , Chandana Kishori Chiluveru , Sandeep Maheswaram Subject: [PATCH v7 2/4] usb: dwc3: qcom: Add interconnect support in dwc3 driver Date: Wed, 1 Apr 2020 10:45:43 +0530 Message-Id: <1585718145-29537-3-git-send-email-sanm@codeaurora.org> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1585718145-29537-1-git-send-email-sanm@codeaurora.org> References: <1585718145-29537-1-git-send-email-sanm@codeaurora.org> Sender: linux-arm-msm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org Add interconnect support in dwc3-qcom driver to vote for bus bandwidth. This requires for two different paths - from USB master to DDR slave. The other is from APPS master to USB slave. Signed-off-by: Sandeep Maheswaram Signed-off-by: Chandana Kishori Chiluveru Reviewed-by: Matthias Kaehlcke --- drivers/usb/dwc3/dwc3-qcom.c | 128 ++++++++++++++++++++++++++++++++++++++++++- 1 file changed, 126 insertions(+), 2 deletions(-) diff --git a/drivers/usb/dwc3/dwc3-qcom.c b/drivers/usb/dwc3/dwc3-qcom.c index 1dfd024..d33ae86 100644 --- a/drivers/usb/dwc3/dwc3-qcom.c +++ b/drivers/usb/dwc3/dwc3-qcom.c @@ -13,6 +13,7 @@ #include #include #include +#include #include #include #include @@ -43,6 +44,14 @@ #define SDM845_QSCRATCH_SIZE 0x400 #define SDM845_DWC3_CORE_SIZE 0xcd00 +/* Interconnect path bandwidths in MBps */ +#define USB_MEMORY_AVG_HS_BW MBps_to_icc(240) +#define USB_MEMORY_PEAK_HS_BW MBps_to_icc(700) +#define USB_MEMORY_AVG_SS_BW MBps_to_icc(1000) +#define USB_MEMORY_PEAK_SS_BW MBps_to_icc(2500) +#define APPS_USB_AVG_BW 0 +#define APPS_USB_PEAK_BW MBps_to_icc(40) + struct dwc3_acpi_pdata { u32 qscratch_base_offset; u32 qscratch_base_size; @@ -76,8 +85,13 @@ struct dwc3_qcom { enum usb_dr_mode mode; bool is_suspended; bool pm_suspended; + struct icc_path *usb_ddr_icc_path; + struct icc_path *apps_usb_icc_path; }; +static int dwc3_qcom_interconnect_enable(struct dwc3_qcom *qcom); +static int dwc3_qcom_interconnect_disable(struct dwc3_qcom *qcom); + static inline void dwc3_qcom_setbits(void __iomem *base, u32 offset, u32 val) { u32 reg; @@ -239,7 +253,7 @@ static void dwc3_qcom_enable_interrupts(struct dwc3_qcom *qcom) static int dwc3_qcom_suspend(struct dwc3_qcom *qcom) { u32 val; - int i; + int i, ret; if (qcom->is_suspended) return 0; @@ -251,6 +265,10 @@ static int dwc3_qcom_suspend(struct dwc3_qcom *qcom) for (i = qcom->num_clocks - 1; i >= 0; i--) clk_disable_unprepare(qcom->clks[i]); + ret = dwc3_qcom_interconnect_disable(qcom); + if (ret) + dev_warn(qcom->dev, "failed to disable interconnect %d\n", ret); + qcom->is_suspended = true; dwc3_qcom_enable_interrupts(qcom); @@ -276,6 +294,10 @@ static int dwc3_qcom_resume(struct dwc3_qcom *qcom) } } + ret = dwc3_qcom_interconnect_enable(qcom); + if (ret) + dev_warn(qcom->dev, "failed to enable interconnect %d\n", ret); + /* Clear existing events from PHY related to L2 in/out */ dwc3_qcom_setbits(qcom->qscratch_base, PWR_EVNT_IRQ_STAT_REG, PWR_EVNT_LPM_IN_L2_MASK | PWR_EVNT_LPM_OUT_L2_MASK); @@ -285,6 +307,101 @@ static int dwc3_qcom_resume(struct dwc3_qcom *qcom) return 0; } + +/** + * dwc3_qcom_interconnect_init() - Get interconnect path handles + * @qcom: Pointer to the concerned usb core. + * + */ +static int dwc3_qcom_interconnect_init(struct dwc3_qcom *qcom) +{ + struct device *dev = qcom->dev; + int ret; + + if (!device_is_bound(&qcom->dwc3->dev)) + return -EPROBE_DEFER; + + qcom->usb_ddr_icc_path = of_icc_get(dev, "usb-ddr"); + if (IS_ERR(qcom->usb_ddr_icc_path)) { + dev_err(dev, "Error: (%ld) failed getting usb-ddr path\n", + PTR_ERR(qcom->usb_ddr_icc_path)); + return PTR_ERR(qcom->usb_ddr_icc_path); + } + + qcom->apps_usb_icc_path = of_icc_get(dev, "apps-usb"); + if (IS_ERR(qcom->apps_usb_icc_path)) { + dev_err(dev, "Error: (%ld) failed getting apps-usb path\n", + PTR_ERR(qcom->apps_usb_icc_path)); + return PTR_ERR(qcom->apps_usb_icc_path); + } + + ret = dwc3_qcom_interconnect_enable(qcom); + if (ret) { + dev_err(dev, "failed to enable interconnect %d\n", ret); + return ret; + } + + return 0; +} + +/** + * dwc3_qcom_interconnect_exit() - Release interconnect path handles + * @qcom: Pointer to the concerned usb core. + * + * This function is used to release interconnect path handle. + */ +static void dwc3_qcom_interconnect_exit(struct dwc3_qcom *qcom) +{ + icc_put(qcom->usb_ddr_icc_path); + icc_put(qcom->apps_usb_icc_path); +} + +/* Currently we only use bandwidth level, so just "enable" interconnects */ +static int dwc3_qcom_interconnect_enable(struct dwc3_qcom *qcom) +{ + struct dwc3 *dwc = platform_get_drvdata(qcom->dwc3); + int ret; + + if (dwc->maximum_speed == USB_SPEED_SUPER) + ret = icc_set_bw(qcom->usb_ddr_icc_path, + USB_MEMORY_AVG_SS_BW, USB_MEMORY_PEAK_SS_BW); + else + ret = icc_set_bw(qcom->usb_ddr_icc_path, + USB_MEMORY_AVG_HS_BW, USB_MEMORY_PEAK_HS_BW); + + if (ret) + return ret; + + ret = icc_set_bw(qcom->apps_usb_icc_path, + APPS_USB_AVG_BW, APPS_USB_PEAK_BW); + if (ret) + icc_set_bw(qcom->usb_ddr_icc_path, 0, 0); + + return ret; +} + +/* To disable an interconnect, we just set its bandwidth to 0 */ +static int dwc3_qcom_interconnect_disable(struct dwc3_qcom *qcom) +{ + int ret; + + ret = icc_set_bw(qcom->usb_ddr_icc_path, 0, 0); + if (ret) + return ret; + + ret = icc_set_bw(qcom->apps_usb_icc_path, 0, 0); + if (ret) + goto err_reenable_memory_path; + + return 0; + + /* Re-enable things in the event of an error */ +err_reenable_memory_path: + dwc3_qcom_interconnect_enable(qcom); + + return ret; +} + static irqreturn_t qcom_dwc3_resume_irq(int irq, void *data) { struct dwc3_qcom *qcom = data; @@ -648,6 +765,10 @@ static int dwc3_qcom_probe(struct platform_device *pdev) goto depopulate; } + ret = dwc3_qcom_interconnect_init(qcom); + if (ret) + goto depopulate; + qcom->mode = usb_get_dr_mode(&qcom->dwc3->dev); /* enable vbus override for device mode */ @@ -657,7 +778,7 @@ static int dwc3_qcom_probe(struct platform_device *pdev) /* register extcon to override sw_vbus on Vbus change later */ ret = dwc3_qcom_register_extcon(qcom); if (ret) - goto depopulate; + goto interconnect_exit; device_init_wakeup(&pdev->dev, 1); qcom->is_suspended = false; @@ -667,6 +788,8 @@ static int dwc3_qcom_probe(struct platform_device *pdev) return 0; +interconnect_exit: + dwc3_qcom_interconnect_exit(qcom); depopulate: if (np) of_platform_depopulate(&pdev->dev); @@ -697,6 +820,7 @@ static int dwc3_qcom_remove(struct platform_device *pdev) } qcom->num_clocks = 0; + dwc3_qcom_interconnect_exit(qcom); reset_control_assert(qcom->resets); pm_runtime_allow(dev); From patchwork Wed Apr 1 05:15:44 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sandeep Maheswaram X-Patchwork-Id: 11468653 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id E48A7912 for ; Wed, 1 Apr 2020 05:17:18 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id CC4E72078B for ; Wed, 1 Apr 2020 05:17:18 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731775AbgDAFRO (ORCPT ); Wed, 1 Apr 2020 01:17:14 -0400 Received: from alexa-out-blr-02.qualcomm.com ([103.229.18.198]:61614 "EHLO alexa-out-blr-02.qualcomm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727918AbgDAFRC (ORCPT ); Wed, 1 Apr 2020 01:17:02 -0400 Received: from ironmsg02-blr.qualcomm.com ([10.86.208.131]) by alexa-out-blr-02.qualcomm.com with ESMTP/TLS/AES256-SHA; 01 Apr 2020 10:46:12 +0530 Received: from c-sanm-linux.qualcomm.com ([10.206.25.31]) by ironmsg02-blr.qualcomm.com with ESMTP; 01 Apr 2020 10:45:55 +0530 Received: by c-sanm-linux.qualcomm.com (Postfix, from userid 2343233) id 59E592619; Wed, 1 Apr 2020 10:45:54 +0530 (IST) From: Sandeep Maheswaram To: Andy Gross , Bjorn Andersson , Greg Kroah-Hartman , Rob Herring , Mark Rutland , Felipe Balbi , Stephen Boyd , Doug Anderson , Matthias Kaehlcke Cc: linux-arm-msm@vger.kernel.org, linux-usb@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Manu Gautam , Chandana Kishori Chiluveru , Sandeep Maheswaram Subject: [PATCH v7 3/4] arm64: dts: qcom: sdm845: Add interconnect properties for USB Date: Wed, 1 Apr 2020 10:45:44 +0530 Message-Id: <1585718145-29537-4-git-send-email-sanm@codeaurora.org> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1585718145-29537-1-git-send-email-sanm@codeaurora.org> References: <1585718145-29537-1-git-send-email-sanm@codeaurora.org> Sender: linux-arm-msm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org Populate USB DT nodes with interconnect properties. Signed-off-by: Sandeep Maheswaram Reviewed-by: Stephen Boyd --- arch/arm64/boot/dts/qcom/sdm845.dtsi | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/arch/arm64/boot/dts/qcom/sdm845.dtsi b/arch/arm64/boot/dts/qcom/sdm845.dtsi index 8f926b5..860d5c2 100644 --- a/arch/arm64/boot/dts/qcom/sdm845.dtsi +++ b/arch/arm64/boot/dts/qcom/sdm845.dtsi @@ -3097,6 +3097,10 @@ resets = <&gcc GCC_USB30_PRIM_BCR>; + interconnects = <&aggre2_noc MASTER_USB3_0 &mem_noc SLAVE_EBI1>, + <&gladiator_noc MASTER_APPSS_PROC &config_noc SLAVE_USB3_0>; + interconnect-names = "usb-ddr", "apps-usb"; + usb_1_dwc3: dwc3@a600000 { compatible = "snps,dwc3"; reg = <0 0x0a600000 0 0xcd00>; @@ -3141,6 +3145,10 @@ resets = <&gcc GCC_USB30_SEC_BCR>; + interconnects = <&aggre2_noc MASTER_USB3_1 &mem_noc SLAVE_EBI1>, + <&gladiator_noc MASTER_APPSS_PROC &config_noc SLAVE_USB3_1>; + interconnect-names = "usb-ddr", "apps-usb"; + usb_2_dwc3: dwc3@a800000 { compatible = "snps,dwc3"; reg = <0 0x0a800000 0 0xcd00>; From patchwork Wed Apr 1 05:15:45 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sandeep Maheswaram X-Patchwork-Id: 11468659 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id C139A1667 for ; Wed, 1 Apr 2020 05:17:24 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id A00EB2078B for ; Wed, 1 Apr 2020 05:17:24 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731712AbgDAFQ7 (ORCPT ); Wed, 1 Apr 2020 01:16:59 -0400 Received: from alexa-out-blr-02.qualcomm.com ([103.229.18.198]:14851 "EHLO alexa-out-blr-02.qualcomm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727918AbgDAFQ6 (ORCPT ); Wed, 1 Apr 2020 01:16:58 -0400 Received: from ironmsg02-blr.qualcomm.com ([10.86.208.131]) by alexa-out-blr-02.qualcomm.com with ESMTP/TLS/AES256-SHA; 01 Apr 2020 10:46:12 +0530 Received: from c-sanm-linux.qualcomm.com ([10.206.25.31]) by ironmsg02-blr.qualcomm.com with ESMTP; 01 Apr 2020 10:45:56 +0530 Received: by c-sanm-linux.qualcomm.com (Postfix, from userid 2343233) id 0A9702619; Wed, 1 Apr 2020 10:45:56 +0530 (IST) From: Sandeep Maheswaram To: Andy Gross , Bjorn Andersson , Greg Kroah-Hartman , Rob Herring , Mark Rutland , Felipe Balbi , Stephen Boyd , Doug Anderson , Matthias Kaehlcke Cc: linux-arm-msm@vger.kernel.org, linux-usb@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Manu Gautam , Chandana Kishori Chiluveru , Sandeep Maheswaram Subject: [PATCH v7 4/4] arm64: dts: qcom: sc7180: Add interconnect properties for USB Date: Wed, 1 Apr 2020 10:45:45 +0530 Message-Id: <1585718145-29537-5-git-send-email-sanm@codeaurora.org> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1585718145-29537-1-git-send-email-sanm@codeaurora.org> References: <1585718145-29537-1-git-send-email-sanm@codeaurora.org> Sender: linux-arm-msm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org Populate USB DT nodes with interconnect properties. Signed-off-by: Sandeep Maheswaram Reviewed-by: Stephen Boyd --- arch/arm64/boot/dts/qcom/sc7180.dtsi | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/arch/arm64/boot/dts/qcom/sc7180.dtsi b/arch/arm64/boot/dts/qcom/sc7180.dtsi index 998f101..bd0d3a7 100644 --- a/arch/arm64/boot/dts/qcom/sc7180.dtsi +++ b/arch/arm64/boot/dts/qcom/sc7180.dtsi @@ -1447,6 +1447,10 @@ resets = <&gcc GCC_USB30_PRIM_BCR>; + interconnects = <&aggre2_noc MASTER_USB3 &mc_virt SLAVE_EBI1>, + <&gem_noc MASTER_APPSS_PROC &config_noc SLAVE_USB3>; + interconnect-names = "usb-ddr", "apps-usb"; + usb_1_dwc3: dwc3@a600000 { compatible = "snps,dwc3"; reg = <0 0x0a600000 0 0xe000>;