From patchwork Tue Mar 31 11:09:29 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Akash Asthana X-Patchwork-Id: 11467509 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 2C63C15AB for ; Tue, 31 Mar 2020 11:10:56 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 0A968208FE for ; Tue, 31 Mar 2020 11:10:56 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=mg.codeaurora.org header.i=@mg.codeaurora.org header.b="HMfN5iXS" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730358AbgCaLKz (ORCPT ); Tue, 31 Mar 2020 07:10:55 -0400 Received: from mail26.static.mailgun.info ([104.130.122.26]:33536 "EHLO mail26.static.mailgun.info" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730380AbgCaLKz (ORCPT ); Tue, 31 Mar 2020 07:10:55 -0400 DKIM-Signature: a=rsa-sha256; v=1; c=relaxed/relaxed; d=mg.codeaurora.org; q=dns/txt; s=smtp; t=1585653054; h=References: In-Reply-To: Message-Id: Date: Subject: Cc: To: From: Sender; bh=A30pWpOcWWloATde2ShySI8DseQoiLN1y6svK/jE72k=; b=HMfN5iXSVNQZ49Oq3iCbT8y1Cj1a2LpCocYQj6VrORLtNkttaJMDOpAeAaif2WgBXc+REjdF VZIsuK12VS94mmh+Q3TIcjSvuKAm7DNU4d1wd2lo+lXX4kuIrThM6UwAydSg46dsWY62FI9X p6BZleUkpkgRr+HJ3z7Omrv1ehE= X-Mailgun-Sending-Ip: 104.130.122.26 X-Mailgun-Sid: WyIzNzdmZSIsICJsaW51eC1zcGlAdmdlci5rZXJuZWwub3JnIiwgImJlOWU0YSJd Received: from smtp.codeaurora.org (ec2-35-166-182-171.us-west-2.compute.amazonaws.com [35.166.182.171]) by mxa.mailgun.org with ESMTP id 5e83252f.7f5e16b0a1b8-smtp-out-n01; Tue, 31 Mar 2020 11:10:39 -0000 (UTC) Received: by smtp.codeaurora.org (Postfix, from userid 1001) id 6697CC433BA; Tue, 31 Mar 2020 11:10:39 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-caf-mail-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-1.0 required=2.0 tests=ALL_TRUSTED,SPF_NONE autolearn=unavailable autolearn_force=no version=3.4.0 Received: from akashast-linux.qualcomm.com (blr-c-bdr-fw-01_GlobalNAT_AllZones-Outside.qualcomm.com [103.229.19.19]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-SHA256 (128/128 bits)) (No client certificate requested) (Authenticated sender: akashast) by smtp.codeaurora.org (Postfix) with ESMTPSA id EE8F3C433D2; Tue, 31 Mar 2020 11:10:20 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org EE8F3C433D2 Authentication-Results: aws-us-west-2-caf-mail-1.web.codeaurora.org; dmarc=none (p=none dis=none) header.from=codeaurora.org Authentication-Results: aws-us-west-2-caf-mail-1.web.codeaurora.org; spf=none smtp.mailfrom=akashast@codeaurora.org From: Akash Asthana To: gregkh@linuxfoundation.org, agross@kernel.org, bjorn.andersson@linaro.org, wsa@the-dreams.de, broonie@kernel.org, mark.rutland@arm.com, robh+dt@kernel.org, georgi.djakov@linaro.org Cc: linux-i2c@vger.kernel.org, linux-spi@vger.kernel.org, devicetree@vger.kernel.org, swboyd@chromium.org, mgautam@codeaurora.org, linux-arm-msm@vger.kernel.org, linux-serial@vger.kernel.org, mka@chromium.org, dianders@chromium.org, evgreen@chromium.org, Akash Asthana Subject: [PATCH V3 1/8] interconnect: Add devm_of_icc_get() as exported API for users Date: Tue, 31 Mar 2020 16:39:29 +0530 Message-Id: <1585652976-17481-2-git-send-email-akashast@codeaurora.org> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1585652976-17481-1-git-send-email-akashast@codeaurora.org> References: <1585652976-17481-1-git-send-email-akashast@codeaurora.org> Sender: linux-spi-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-spi@vger.kernel.org Users can use devm version of of_icc_get() to benefit from automatic resource release. Signed-off-by: Akash Asthana Reviewed by: Matthias Kaehlcke Reviewed-by: Bjorn Andersson --- drivers/interconnect/core.c | 25 +++++++++++++++++++++++++ include/linux/interconnect.h | 7 +++++++ 2 files changed, 32 insertions(+) diff --git a/drivers/interconnect/core.c b/drivers/interconnect/core.c index 2c6515e..f5699ed 100644 --- a/drivers/interconnect/core.c +++ b/drivers/interconnect/core.c @@ -350,6 +350,31 @@ static struct icc_node *of_icc_get_from_provider(struct of_phandle_args *spec) return node; } +static void devm_icc_release(struct device *dev, void *res) +{ + icc_put(*(struct icc_path **)res); +} + +struct icc_path *devm_of_icc_get(struct device *dev, const char *name) +{ + struct icc_path **ptr, *path; + + ptr = devres_alloc(devm_icc_release, sizeof(**ptr), GFP_KERNEL); + if (!ptr) + return ERR_PTR(-ENOMEM); + + path = of_icc_get(dev, name); + if (!IS_ERR(path)) { + *ptr = path; + devres_add(dev, ptr); + } else { + devres_free(ptr); + } + + return path; +} +EXPORT_SYMBOL_GPL(devm_of_icc_get); + /** * of_icc_get() - get a path handle from a DT node based on name * @dev: device pointer for the consumer device diff --git a/include/linux/interconnect.h b/include/linux/interconnect.h index d70a914..7706924 100644 --- a/include/linux/interconnect.h +++ b/include/linux/interconnect.h @@ -28,6 +28,7 @@ struct device; struct icc_path *icc_get(struct device *dev, const int src_id, const int dst_id); struct icc_path *of_icc_get(struct device *dev, const char *name); +struct icc_path *devm_of_icc_get(struct device *dev, const char *name); void icc_put(struct icc_path *path); int icc_set_bw(struct icc_path *path, u32 avg_bw, u32 peak_bw); void icc_set_tag(struct icc_path *path, u32 tag); @@ -46,6 +47,12 @@ static inline struct icc_path *of_icc_get(struct device *dev, return NULL; } +static inline struct icc_path *devm_of_icc_get(struct device *dev, + const char *name) +{ + return NULL; +} + static inline void icc_put(struct icc_path *path) { } From patchwork Tue Mar 31 11:09:30 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Akash Asthana X-Patchwork-Id: 11467513 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 2EB8F17EA for ; Tue, 31 Mar 2020 11:11:23 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 03EC820838 for ; Tue, 31 Mar 2020 11:11:23 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=mg.codeaurora.org header.i=@mg.codeaurora.org header.b="RRpFUsrS" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730380AbgCaLLW (ORCPT ); Tue, 31 Mar 2020 07:11:22 -0400 Received: from mail27.static.mailgun.info ([104.130.122.27]:12692 "EHLO mail27.static.mailgun.info" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730515AbgCaLLW (ORCPT ); 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Tue, 31 Mar 2020 11:10:44 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org BA6DEC433F2 Authentication-Results: aws-us-west-2-caf-mail-1.web.codeaurora.org; dmarc=none (p=none dis=none) header.from=codeaurora.org Authentication-Results: aws-us-west-2-caf-mail-1.web.codeaurora.org; spf=none smtp.mailfrom=akashast@codeaurora.org From: Akash Asthana To: gregkh@linuxfoundation.org, agross@kernel.org, bjorn.andersson@linaro.org, wsa@the-dreams.de, broonie@kernel.org, mark.rutland@arm.com, robh+dt@kernel.org, georgi.djakov@linaro.org Cc: linux-i2c@vger.kernel.org, linux-spi@vger.kernel.org, devicetree@vger.kernel.org, swboyd@chromium.org, mgautam@codeaurora.org, linux-arm-msm@vger.kernel.org, linux-serial@vger.kernel.org, mka@chromium.org, dianders@chromium.org, evgreen@chromium.org, Akash Asthana Subject: [PATCH V3 2/8] soc: qcom: geni: Support for ICC voting Date: Tue, 31 Mar 2020 16:39:30 +0530 Message-Id: <1585652976-17481-3-git-send-email-akashast@codeaurora.org> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1585652976-17481-1-git-send-email-akashast@codeaurora.org> References: <1585652976-17481-1-git-send-email-akashast@codeaurora.org> Sender: linux-spi-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-spi@vger.kernel.org Add necessary macros and structure variables to support ICC BW voting from individual SE drivers. Signed-off-by: Akash Asthana Reviewed-by: Matthias Kaehlcke --- Changes in V2: - As per Bjorn's comment dropped enums for ICC paths, given the three paths individual members Changes in V3: - Add geni_icc_get, geni_icc_vote_on and geni_icc_vote_off as helper API. - Add geni_icc_path structure in common header drivers/soc/qcom/qcom-geni-se.c | 98 +++++++++++++++++++++++++++++++++++++++++ include/linux/qcom-geni-se.h | 36 +++++++++++++++ 2 files changed, 134 insertions(+) diff --git a/drivers/soc/qcom/qcom-geni-se.c b/drivers/soc/qcom/qcom-geni-se.c index 7d622ea..9344c14 100644 --- a/drivers/soc/qcom/qcom-geni-se.c +++ b/drivers/soc/qcom/qcom-geni-se.c @@ -720,6 +720,104 @@ void geni_se_rx_dma_unprep(struct geni_se *se, dma_addr_t iova, size_t len) } EXPORT_SYMBOL(geni_se_rx_dma_unprep); +int geni_icc_get(struct geni_se *se, const char *icc_core, const char *icc_cpu, + const char *icc_ddr) +{ + if (icc_core) { + se->to_core.path = devm_of_icc_get(se->dev, "qup-core"); + if (IS_ERR(se->to_core.path)) + return PTR_ERR(se->to_core.path); + } + + if (icc_cpu) { + se->from_cpu.path = devm_of_icc_get(se->dev, "qup-config"); + if (IS_ERR(se->from_cpu.path)) + return PTR_ERR(se->from_cpu.path); + } + + if (icc_ddr) { + se->to_ddr.path = devm_of_icc_get(se->dev, "qup-memory"); + if (IS_ERR(se->to_ddr.path)) + return PTR_ERR(se->to_ddr.path); + } + + return 0; +} +EXPORT_SYMBOL(geni_icc_get); + +int geni_icc_vote_on(struct geni_se *se) +{ + int ret; + + if (se->to_core.path) { + ret = icc_set_bw(se->to_core.path, se->to_core.avg_bw, + se->to_core.peak_bw); + if (ret) { + dev_err_ratelimited(se->dev, "%s: ICC BW voting failed for core\n", + __func__); + return ret; + } + } + + if (se->from_cpu.path) { + ret = icc_set_bw(se->from_cpu.path, se->from_cpu.avg_bw, + se->from_cpu.peak_bw); + if (ret) { + dev_err_ratelimited(se->dev, "%s: ICC BW voting failed for cpu\n", + __func__); + return ret; + } + } + + if (se->to_ddr.path) { + ret = icc_set_bw(se->to_ddr.path, se->to_ddr.avg_bw, + se->to_ddr.peak_bw); + if (ret) { + dev_err_ratelimited(se->dev, "%s: ICC BW voting failed for ddr\n", + __func__); + return ret; + } + } + + return 0; +} +EXPORT_SYMBOL(geni_icc_vote_on); + +int geni_icc_vote_off(struct geni_se *se) +{ + int ret; + + if (se->to_core.path) { + ret = icc_set_bw(se->to_core.path, 0, 0); + if (ret) { + dev_err_ratelimited(se->dev, "%s: ICC BW remove failed for core\n", + __func__); + return ret; + } + } + + if (se->from_cpu.path) { + ret = icc_set_bw(se->from_cpu.path, 0, 0); + if (ret) { + dev_err_ratelimited(se->dev, "%s: ICC BW remove failed for cpu\n", + __func__); + return ret; + } + } + + if (se->to_ddr.path) { + ret = icc_set_bw(se->to_ddr.path, 0, 0); + if (ret) { + dev_err_ratelimited(se->dev, "%s: ICC BW remove failed for ddr\n", + __func__); + return ret; + } + } + + return 0; +} +EXPORT_SYMBOL(geni_icc_vote_off); + static int geni_se_probe(struct platform_device *pdev) { struct device *dev = &pdev->dev; diff --git a/include/linux/qcom-geni-se.h b/include/linux/qcom-geni-se.h index dd46494..a83c86b 100644 --- a/include/linux/qcom-geni-se.h +++ b/include/linux/qcom-geni-se.h @@ -6,6 +6,8 @@ #ifndef _LINUX_QCOM_GENI_SE #define _LINUX_QCOM_GENI_SE +#include + /* Transfer mode supported by GENI Serial Engines */ enum geni_se_xfer_mode { GENI_SE_INVALID, @@ -25,6 +27,12 @@ enum geni_se_protocol_type { struct geni_wrapper; struct clk; +struct geni_icc_path { + struct icc_path *path; + unsigned int avg_bw; + unsigned int peak_bw; +}; + /** * struct geni_se - GENI Serial Engine * @base: Base Address of the Serial Engine's register block @@ -33,6 +41,9 @@ struct clk; * @clk: Handle to the core serial engine clock * @num_clk_levels: Number of valid clock levels in clk_perf_tbl * @clk_perf_tbl: Table of clock frequency input to serial engine clock + * @to_core: ICC path structure for geni to core + * @from_cpu: ICC path structure for cpu to geni + * @to_ddr: ICC path structure for geni to ddr */ struct geni_se { void __iomem *base; @@ -41,6 +52,9 @@ struct geni_se { struct clk *clk; unsigned int num_clk_levels; unsigned long *clk_perf_tbl; + struct geni_icc_path to_core; + struct geni_icc_path from_cpu; + struct geni_icc_path to_ddr; }; /* Common SE registers */ @@ -229,6 +243,21 @@ struct geni_se { #define GENI_SE_VERSION_MINOR(ver) ((ver & HW_VER_MINOR_MASK) >> HW_VER_MINOR_SHFT) #define GENI_SE_VERSION_STEP(ver) (ver & HW_VER_STEP_MASK) +/* + * Define bandwidth thresholds that cause the underlying Core 2X interconnect + * clock to run at the named frequency. These baseline values are recommended + * by the hardware team, and are not dynamically scaled with GENI bandwidth + * beyond basic on/off. + */ +#define CORE_2X_19_2_MHZ 960 +#define CORE_2X_50_MHZ 2500 +#define CORE_2X_100_MHZ 5000 +#define CORE_2X_150_MHZ 7500 +#define CORE_2X_200_MHZ 10000 +#define CORE_2X_236_MHZ 16383 + +#define GENI_DEFAULT_BW Bps_to_icc(1000) + #if IS_ENABLED(CONFIG_QCOM_GENI_SE) u32 geni_se_get_qup_hw_version(struct geni_se *se); @@ -416,5 +445,12 @@ int geni_se_rx_dma_prep(struct geni_se *se, void *buf, size_t len, void geni_se_tx_dma_unprep(struct geni_se *se, dma_addr_t iova, size_t len); void geni_se_rx_dma_unprep(struct geni_se *se, dma_addr_t iova, size_t len); + +int geni_icc_get(struct geni_se *se, const char *icc_core, const char *icc_cpu, + const char *icc_ddr); + +int geni_icc_vote_on(struct geni_se *se); + +int geni_icc_vote_off(struct geni_se *se); #endif #endif From patchwork Tue Mar 31 11:09:31 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Akash Asthana X-Patchwork-Id: 11467515 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 CB9AB17EA for ; Tue, 31 Mar 2020 11:11:28 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id A0B73208E0 for ; Tue, 31 Mar 2020 11:11:28 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=mg.codeaurora.org header.i=@mg.codeaurora.org header.b="somEMvKn" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730366AbgCaLL2 (ORCPT ); Tue, 31 Mar 2020 07:11:28 -0400 Received: from mail27.static.mailgun.info ([104.130.122.27]:40823 "EHLO mail27.static.mailgun.info" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730490AbgCaLL2 (ORCPT ); Tue, 31 Mar 2020 07:11:28 -0400 DKIM-Signature: a=rsa-sha256; v=1; c=relaxed/relaxed; d=mg.codeaurora.org; q=dns/txt; s=smtp; t=1585653087; h=References: In-Reply-To: Message-Id: Date: Subject: Cc: To: From: Sender; bh=9CeOY47cRKUnZHA0P4VkQbiXSuXqkqOXF8nU1OCQSL8=; b=somEMvKn+QPKQW4fOzDHzueWm8FaTPBs1nuVYsCBtd06y8HayQZ17C3GPnlpPBQLr8Zp0rnW GU6tBnDjNahyZ3X5M4yVjSYOvnH+YzGHSCV7aM4WGm+YEBSq0xksLZXsz4MwP6fzMM0Xucp5 8fd6hbe1HnZtc0hUubUkQiOQE2I= X-Mailgun-Sending-Ip: 104.130.122.27 X-Mailgun-Sid: WyIzNzdmZSIsICJsaW51eC1zcGlAdmdlci5rZXJuZWwub3JnIiwgImJlOWU0YSJd Received: from smtp.codeaurora.org (ec2-35-166-182-171.us-west-2.compute.amazonaws.com [35.166.182.171]) by mxa.mailgun.org with ESMTP id 5e83255d.7f19b71a7f48-smtp-out-n05; Tue, 31 Mar 2020 11:11:25 -0000 (UTC) Received: by smtp.codeaurora.org (Postfix, from userid 1001) id D81B6C44792; Tue, 31 Mar 2020 11:11:25 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-caf-mail-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-1.0 required=2.0 tests=ALL_TRUSTED,SPF_NONE autolearn=unavailable autolearn_force=no version=3.4.0 Received: from akashast-linux.qualcomm.com (blr-c-bdr-fw-01_GlobalNAT_AllZones-Outside.qualcomm.com [103.229.19.19]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-SHA256 (128/128 bits)) (No client certificate requested) (Authenticated sender: akashast) by smtp.codeaurora.org (Postfix) with ESMTPSA id 0F05DC433D2; Tue, 31 Mar 2020 11:11:06 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org 0F05DC433D2 Authentication-Results: aws-us-west-2-caf-mail-1.web.codeaurora.org; dmarc=none (p=none dis=none) header.from=codeaurora.org Authentication-Results: aws-us-west-2-caf-mail-1.web.codeaurora.org; spf=none smtp.mailfrom=akashast@codeaurora.org From: Akash Asthana To: gregkh@linuxfoundation.org, agross@kernel.org, bjorn.andersson@linaro.org, wsa@the-dreams.de, broonie@kernel.org, mark.rutland@arm.com, robh+dt@kernel.org, georgi.djakov@linaro.org Cc: linux-i2c@vger.kernel.org, linux-spi@vger.kernel.org, devicetree@vger.kernel.org, swboyd@chromium.org, mgautam@codeaurora.org, linux-arm-msm@vger.kernel.org, linux-serial@vger.kernel.org, mka@chromium.org, dianders@chromium.org, evgreen@chromium.org, Akash Asthana Subject: [PATCH V3 3/8] soc: qcom-geni-se: Add interconnect support to fix earlycon crash Date: Tue, 31 Mar 2020 16:39:31 +0530 Message-Id: <1585652976-17481-4-git-send-email-akashast@codeaurora.org> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1585652976-17481-1-git-send-email-akashast@codeaurora.org> References: <1585652976-17481-1-git-send-email-akashast@codeaurora.org> Sender: linux-spi-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-spi@vger.kernel.org QUP core clock is shared among all the SE drivers present on particular QUP wrapper, the system will reset(unclocked access) if earlycon used after QUP core clock is put to 0 from other SE drivers before real console comes up. As earlycon can't vote for it's QUP core need, to fix this add ICC support to common/QUP wrapper driver and put vote for QUP core from probe on behalf of earlycon and remove vote during earlycon exit call. Signed-off-by: Akash Asthana Reported-by: Matthias Kaehlcke --- Change is V3: - Add geni_remove_earlycon_icc_vote API that will be used by earlycon exit function to remove ICC vote for earlyconsole. - Remove suspend/resume hook for geni-se driver as we are no longer removing earlyconsole ICC vote from system suspend, we are removing from earlycon exit. drivers/soc/qcom/qcom-geni-se.c | 51 +++++++++++++++++++++++++++++++++++ drivers/tty/serial/qcom_geni_serial.c | 7 +++++ include/linux/qcom-geni-se.h | 2 ++ 3 files changed, 60 insertions(+) diff --git a/drivers/soc/qcom/qcom-geni-se.c b/drivers/soc/qcom/qcom-geni-se.c index 9344c14..d30c282 100644 --- a/drivers/soc/qcom/qcom-geni-se.c +++ b/drivers/soc/qcom/qcom-geni-se.c @@ -90,8 +90,11 @@ struct geni_wrapper { struct device *dev; void __iomem *base; struct clk_bulk_data ahb_clks[NUM_AHB_CLKS]; + struct geni_icc_path to_core; }; +struct geni_wrapper *earlycon_wrapper; + #define QUP_HW_VER_REG 0x4 /* Common SE registers */ @@ -818,6 +821,26 @@ int geni_icc_vote_off(struct geni_se *se) } EXPORT_SYMBOL(geni_icc_vote_off); +void geni_remove_earlycon_icc_vote(void) +{ + struct geni_wrapper *wrapper = earlycon_wrapper; + struct device_node *parent = of_get_next_parent(wrapper->dev->of_node); + struct device_node *child; + + for_each_child_of_node(parent, child) { + if (of_device_is_compatible(child, "qcom,geni-se-qup")) { + wrapper = platform_get_drvdata(of_find_device_by_node( + child)); + icc_put(wrapper->to_core.path); + wrapper->to_core.path = NULL; + } + } + of_node_put(parent); + + earlycon_wrapper = NULL; +} +EXPORT_SYMBOL(geni_remove_earlycon_icc_vote); + static int geni_se_probe(struct platform_device *pdev) { struct device *dev = &pdev->dev; @@ -845,6 +868,34 @@ static int geni_se_probe(struct platform_device *pdev) } } +#ifdef CONFIG_SERIAL_EARLYCON + wrapper->to_core.path = devm_of_icc_get(dev, "qup-core"); + if (IS_ERR(wrapper->to_core.path)) + return PTR_ERR(wrapper->to_core.path); + /* + * Put minmal BW request on core clocks on behalf of early console. + * The vote will be removed earlycon exit function. + * + * Note: We are putting vote on each QUP wrapper instead only to which + * earlycon is connected because QUP core clock of different wrapper + * share same voltage domain. If core1 is put to 0, then core2 will + * also run at 0, if not voted. Default ICC vote will be removed ASA + * we touch any of the core clock. + * core1 = core2 = max(core1, core2) + */ + ret = icc_set_bw(wrapper->to_core.path, GENI_DEFAULT_BW, + GENI_DEFAULT_BW); + if (ret) { + dev_err(&pdev->dev, "%s: ICC BW voting failed for core\n", + __func__); + return ret; + } + + if (of_get_compatible_child(pdev->dev.of_node, "qcom,geni-debug-uart")) + earlycon_wrapper = wrapper; + of_node_put(pdev->dev.of_node); +#endif + dev_set_drvdata(dev, wrapper); dev_dbg(dev, "GENI SE Driver probed\n"); return devm_of_platform_populate(dev); diff --git a/drivers/tty/serial/qcom_geni_serial.c b/drivers/tty/serial/qcom_geni_serial.c index 6119090..8c5d97c 100644 --- a/drivers/tty/serial/qcom_geni_serial.c +++ b/drivers/tty/serial/qcom_geni_serial.c @@ -1090,6 +1090,12 @@ static void qcom_geni_serial_earlycon_write(struct console *con, __qcom_geni_serial_console_write(&dev->port, s, n); } +static int qcom_geni_serial_earlycon_exit(struct console *con) +{ + geni_remove_earlycon_icc_vote(); + return 0; +} + static int __init qcom_geni_serial_earlycon_setup(struct earlycon_device *dev, const char *opt) { @@ -1135,6 +1141,7 @@ static int __init qcom_geni_serial_earlycon_setup(struct earlycon_device *dev, writel(stop_bit_len, uport->membase + SE_UART_TX_STOP_BIT_LEN); dev->con->write = qcom_geni_serial_earlycon_write; + dev->con->exit = qcom_geni_serial_earlycon_exit; dev->con->setup = NULL; return 0; } diff --git a/include/linux/qcom-geni-se.h b/include/linux/qcom-geni-se.h index a83c86b..c830b38 100644 --- a/include/linux/qcom-geni-se.h +++ b/include/linux/qcom-geni-se.h @@ -452,5 +452,7 @@ int geni_icc_get(struct geni_se *se, const char *icc_core, const char *icc_cpu, int geni_icc_vote_on(struct geni_se *se); int geni_icc_vote_off(struct geni_se *se); + +void geni_remove_earlycon_icc_vote(void); #endif #endif From patchwork Tue Mar 31 11:09:32 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Akash Asthana X-Patchwork-Id: 11467519 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 72E3217EA for ; 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spf=none smtp.mailfrom=akashast@codeaurora.org From: Akash Asthana To: gregkh@linuxfoundation.org, agross@kernel.org, bjorn.andersson@linaro.org, wsa@the-dreams.de, broonie@kernel.org, mark.rutland@arm.com, robh+dt@kernel.org, georgi.djakov@linaro.org Cc: linux-i2c@vger.kernel.org, linux-spi@vger.kernel.org, devicetree@vger.kernel.org, swboyd@chromium.org, mgautam@codeaurora.org, linux-arm-msm@vger.kernel.org, linux-serial@vger.kernel.org, mka@chromium.org, dianders@chromium.org, evgreen@chromium.org, Akash Asthana Subject: [PATCH V3 4/8] i2c: i2c-qcom-geni: Add interconnect support Date: Tue, 31 Mar 2020 16:39:32 +0530 Message-Id: <1585652976-17481-5-git-send-email-akashast@codeaurora.org> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1585652976-17481-1-git-send-email-akashast@codeaurora.org> References: <1585652976-17481-1-git-send-email-akashast@codeaurora.org> Sender: linux-spi-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-spi@vger.kernel.org Get the interconnect paths for I2C based Serial Engine device and vote according to the bus speed of the driver. Signed-off-by: Akash Asthana --- Changes in V2: - As per Bjorn's comment, removed se == NULL check from geni_i2c_icc_get - As per Bjorn's comment, removed code to set se->icc_path* to NULL in failure - As per Bjorn's comment, introduced and using devm_of_icc_get API for getting path handle - As per Matthias comment, added error handling for icc_set_bw call Changes in V3: - As per Matthias comment, use common library APIs defined in geni-se driver for ICC functionality. drivers/i2c/busses/i2c-qcom-geni.c | 30 +++++++++++++++++++++++++++++- 1 file changed, 29 insertions(+), 1 deletion(-) diff --git a/drivers/i2c/busses/i2c-qcom-geni.c b/drivers/i2c/busses/i2c-qcom-geni.c index 18d1e4f..373c2ca 100644 --- a/drivers/i2c/busses/i2c-qcom-geni.c +++ b/drivers/i2c/busses/i2c-qcom-geni.c @@ -557,6 +557,26 @@ static int geni_i2c_probe(struct platform_device *pdev) gi2c->adap.dev.of_node = dev->of_node; strlcpy(gi2c->adap.name, "Geni-I2C", sizeof(gi2c->adap.name)); + ret = geni_icc_get(&gi2c->se, "qup-core", "qup-config", "qup-memory"); + if (ret) + return ret; + /* + * Set the bus quota for core and cpu to a reasonable value for + * register access. + * Set quota for DDR based on bus speed, assume peak requirement + * as twice of avg bw. + */ + gi2c->se.to_core.avg_bw = GENI_DEFAULT_BW; + gi2c->se.to_core.peak_bw = Bps_to_icc(CORE_2X_100_MHZ); + gi2c->se.from_cpu.avg_bw = GENI_DEFAULT_BW; + gi2c->se.from_cpu.peak_bw = GENI_DEFAULT_BW; + gi2c->se.to_ddr.avg_bw = Bps_to_icc(gi2c->clk_freq_out); + gi2c->se.to_ddr.peak_bw = Bps_to_icc(2 * gi2c->clk_freq_out); + + ret = geni_icc_vote_on(&gi2c->se); + if (ret) + return ret; + ret = geni_se_resources_on(&gi2c->se); if (ret) { dev_err(dev, "Error turning on resources %d\n", ret); @@ -579,6 +599,10 @@ static int geni_i2c_probe(struct platform_device *pdev) return ret; } + ret = geni_icc_vote_off(&gi2c->se); + if (ret) + return ret; + dev_dbg(dev, "i2c fifo/se-dma mode. fifo depth:%d\n", tx_depth); gi2c->suspended = 1; @@ -623,7 +647,7 @@ static int __maybe_unused geni_i2c_runtime_suspend(struct device *dev) gi2c->suspended = 1; } - return 0; + return geni_icc_vote_off(&gi2c->se); } static int __maybe_unused geni_i2c_runtime_resume(struct device *dev) @@ -631,6 +655,10 @@ static int __maybe_unused geni_i2c_runtime_resume(struct device *dev) int ret; struct geni_i2c_dev *gi2c = dev_get_drvdata(dev); + ret = geni_icc_vote_on(&gi2c->se); + if (ret) + return ret; + ret = geni_se_resources_on(&gi2c->se); if (ret) return ret; From patchwork Tue Mar 31 11:09:33 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Akash Asthana X-Patchwork-Id: 11467559 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 CE8B415AB for ; Tue, 31 Mar 2020 11:12:29 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id AD9CC208FE for ; Tue, 31 Mar 2020 11:12:29 +0000 (UTC) Authentication-Results: mail.kernel.org; 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spf=none smtp.mailfrom=akashast@codeaurora.org From: Akash Asthana To: gregkh@linuxfoundation.org, agross@kernel.org, bjorn.andersson@linaro.org, wsa@the-dreams.de, broonie@kernel.org, mark.rutland@arm.com, robh+dt@kernel.org, georgi.djakov@linaro.org Cc: linux-i2c@vger.kernel.org, linux-spi@vger.kernel.org, devicetree@vger.kernel.org, swboyd@chromium.org, mgautam@codeaurora.org, linux-arm-msm@vger.kernel.org, linux-serial@vger.kernel.org, mka@chromium.org, dianders@chromium.org, evgreen@chromium.org, Akash Asthana Subject: [PATCH V3 5/8] spi: spi-geni-qcom: Add interconnect support Date: Tue, 31 Mar 2020 16:39:33 +0530 Message-Id: <1585652976-17481-6-git-send-email-akashast@codeaurora.org> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1585652976-17481-1-git-send-email-akashast@codeaurora.org> References: <1585652976-17481-1-git-send-email-akashast@codeaurora.org> Sender: linux-spi-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-spi@vger.kernel.org Get the interconnect paths for SPI based Serial Engine device and vote according to the current bus speed of the driver. Signed-off-by: Akash Asthana Reviewed-by: Matthias Kaehlcke --- Changes in V2: - As per Bjorn's comment, removed se == NULL check from geni_spi_icc_get - As per Bjorn's comment, removed code to set se->icc_path* to NULL in failure - As per Bjorn's comment, introduced and using devm_of_icc_get API for getting path handle - As per Matthias comment, added error handling for icc_set_bw call Changes in V3: - As per Matthias's comment, use helper ICC function from geni-se driver. drivers/spi/spi-geni-qcom.c | 31 ++++++++++++++++++++++++++++++- 1 file changed, 30 insertions(+), 1 deletion(-) diff --git a/drivers/spi/spi-geni-qcom.c b/drivers/spi/spi-geni-qcom.c index c397242..f1dae2d 100644 --- a/drivers/spi/spi-geni-qcom.c +++ b/drivers/spi/spi-geni-qcom.c @@ -234,6 +234,16 @@ static int setup_fifo_params(struct spi_device *spi_slv, return ret; } + /* + * Set BW quota for CPU as driver supports FIFO mode only. + * Assume peak bw as twice of avg bw. + */ + se->from_cpu.avg_bw = Bps_to_icc(mas->cur_speed_hz); + se->from_cpu.peak_bw = Bps_to_icc(2 * mas->cur_speed_hz); + ret = geni_icc_vote_on(se); + if (ret) + return ret; + clk_sel = idx & CLK_SEL_MSK; m_clk_cfg = (div << CLK_DIV_SHFT) | SER_CLK_EN; spi_setup_word_len(mas, spi_slv->mode, spi_slv->bits_per_word); @@ -578,6 +588,15 @@ static int spi_geni_probe(struct platform_device *pdev) spin_lock_init(&mas->lock); pm_runtime_enable(dev); + ret = geni_icc_get(&mas->se, "qup-core", "qup-config", NULL); + if (ret) + goto spi_geni_probe_runtime_disable; + /* Set the bus quota to a reasonable value for register access */ + mas->se.to_core.avg_bw = Bps_to_icc(CORE_2X_50_MHZ); + mas->se.to_core.peak_bw = Bps_to_icc(CORE_2X_100_MHZ); + mas->se.from_cpu.avg_bw = GENI_DEFAULT_BW; + mas->se.from_cpu.peak_bw = GENI_DEFAULT_BW; + ret = spi_geni_init(mas); if (ret) goto spi_geni_probe_runtime_disable; @@ -616,14 +635,24 @@ static int __maybe_unused spi_geni_runtime_suspend(struct device *dev) { struct spi_master *spi = dev_get_drvdata(dev); struct spi_geni_master *mas = spi_master_get_devdata(spi); + int ret; + + ret = geni_se_resources_off(&mas->se); + if (ret) + return ret; - return geni_se_resources_off(&mas->se); + return geni_icc_vote_off(&mas->se); } static int __maybe_unused spi_geni_runtime_resume(struct device *dev) { struct spi_master *spi = dev_get_drvdata(dev); struct spi_geni_master *mas = spi_master_get_devdata(spi); + int ret; + + ret = geni_icc_vote_on(&mas->se); + if (ret) + return ret; return geni_se_resources_on(&mas->se); } From patchwork Tue Mar 31 11:09:34 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Akash Asthana X-Patchwork-Id: 11467613 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 C111B17EA for ; Tue, 31 Mar 2020 11:12:52 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id A0268208E4 for ; Tue, 31 Mar 2020 11:12:52 +0000 (UTC) Authentication-Results: mail.kernel.org; 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spf=none smtp.mailfrom=akashast@codeaurora.org From: Akash Asthana To: gregkh@linuxfoundation.org, agross@kernel.org, bjorn.andersson@linaro.org, wsa@the-dreams.de, broonie@kernel.org, mark.rutland@arm.com, robh+dt@kernel.org, georgi.djakov@linaro.org Cc: linux-i2c@vger.kernel.org, linux-spi@vger.kernel.org, devicetree@vger.kernel.org, swboyd@chromium.org, mgautam@codeaurora.org, linux-arm-msm@vger.kernel.org, linux-serial@vger.kernel.org, mka@chromium.org, dianders@chromium.org, evgreen@chromium.org, Akash Asthana Subject: [PATCH V3 6/8] tty: serial: qcom_geni_serial: Add interconnect support Date: Tue, 31 Mar 2020 16:39:34 +0530 Message-Id: <1585652976-17481-7-git-send-email-akashast@codeaurora.org> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1585652976-17481-1-git-send-email-akashast@codeaurora.org> References: <1585652976-17481-1-git-send-email-akashast@codeaurora.org> Sender: linux-spi-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-spi@vger.kernel.org Get the interconnect paths for Uart based Serial Engine device and vote according to the baud rate requirement of the driver. Signed-off-by: Akash Asthana --- Changes in V2: - As per Bjorn's comment, removed se == NULL check from geni_serial_icc_get - As per Bjorn's comment, removed code to set se->icc_path* to NULL in failure - As per Bjorn's comment, introduced and using devm_of_icc_get API for getting path handle - As per Matthias comment, added error handling for icc_set_bw call Changes in V3: - As per Matthias comment, use common library APIs defined in geni-se driver for ICC functionality. drivers/tty/serial/qcom_geni_serial.c | 28 +++++++++++++++++++++++++--- 1 file changed, 25 insertions(+), 3 deletions(-) diff --git a/drivers/tty/serial/qcom_geni_serial.c b/drivers/tty/serial/qcom_geni_serial.c index 8c5d97c..2befe72 100644 --- a/drivers/tty/serial/qcom_geni_serial.c +++ b/drivers/tty/serial/qcom_geni_serial.c @@ -965,6 +965,14 @@ static void qcom_geni_serial_set_termios(struct uart_port *uport, ser_clk_cfg = SER_CLK_EN; ser_clk_cfg |= clk_div << CLK_DIV_SHFT; + /* + * Bump up BW vote on CPU path as driver supports FIFO mode only. + * Assume peak_bw as twice of avg_bw. + */ + port->se.from_cpu.avg_bw = Bps_to_icc(baud); + port->se.from_cpu.peak_bw = Bps_to_icc(2 * baud); + geni_icc_vote_on(&port->se); + /* parity */ tx_trans_cfg = readl(uport->membase + SE_UART_TX_TRANS_CFG); tx_parity_cfg = readl(uport->membase + SE_UART_TX_PARITY_CFG); @@ -1202,11 +1210,14 @@ static void qcom_geni_serial_pm(struct uart_port *uport, if (old_state == UART_PM_STATE_UNDEFINED) old_state = UART_PM_STATE_OFF; - if (new_state == UART_PM_STATE_ON && old_state == UART_PM_STATE_OFF) + if (new_state == UART_PM_STATE_ON && old_state == UART_PM_STATE_OFF) { + geni_icc_vote_on(&port->se); geni_se_resources_on(&port->se); - else if (new_state == UART_PM_STATE_OFF && - old_state == UART_PM_STATE_ON) + } else if (new_state == UART_PM_STATE_OFF && + old_state == UART_PM_STATE_ON) { geni_se_resources_off(&port->se); + geni_icc_vote_off(&port->se); + } } static const struct uart_ops qcom_geni_console_pops = { @@ -1304,6 +1315,17 @@ static int qcom_geni_serial_probe(struct platform_device *pdev) return -ENOMEM; } + ret = geni_icc_get(&port->se, "qup-core", "qup-config", NULL); + if (ret) + return ret; + /* Set the bus quota to a reasonable value */ + port->se.to_core.avg_bw = console ? GENI_DEFAULT_BW : + Bps_to_icc(CORE_2X_50_MHZ); + port->se.to_core.peak_bw = console ? GENI_DEFAULT_BW : + Bps_to_icc(CORE_2X_100_MHZ); + port->se.from_cpu.avg_bw = GENI_DEFAULT_BW; + port->se.from_cpu.peak_bw = GENI_DEFAULT_BW; + port->name = devm_kasprintf(uport->dev, GFP_KERNEL, "qcom_geni_serial_%s%d", uart_console(uport) ? "console" : "uart", uport->line); From patchwork Tue Mar 31 11:09:35 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Akash Asthana X-Patchwork-Id: 11467615 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 2B36D18A5 for ; Tue, 31 Mar 2020 11:12:53 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 0A03320838 for ; Tue, 31 Mar 2020 11:12:53 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=mg.codeaurora.org header.i=@mg.codeaurora.org header.b="oeTvPNxy" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730718AbgCaLMw (ORCPT ); Tue, 31 Mar 2020 07:12:52 -0400 Received: from mail26.static.mailgun.info ([104.130.122.26]:44281 "EHLO mail26.static.mailgun.info" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730719AbgCaLMv (ORCPT ); Tue, 31 Mar 2020 07:12:51 -0400 DKIM-Signature: a=rsa-sha256; v=1; c=relaxed/relaxed; d=mg.codeaurora.org; q=dns/txt; s=smtp; t=1585653170; h=References: In-Reply-To: Message-Id: Date: Subject: Cc: To: From: Sender; bh=OB7r0p9mbeW0EkgH3rS12A527iLmrRtmpQkWVTFYQ9U=; b=oeTvPNxyZKx0ObkhHoyqmPM5nUhkPfxsYkF22RaFO0W/CSlxRnVD9/H26B1N9/mCuB5pBvjY Giguit5QjVeytcuB12kzUXUYLXxFhD8m4lvIFS2QkxFbIM/ju5ADqwAXnCjuF4e2F4DVX+Lo 5fqVhWVAlkZ9bixrNzCZvrs8Z4Q= X-Mailgun-Sending-Ip: 104.130.122.26 X-Mailgun-Sid: WyIzNzdmZSIsICJsaW51eC1zcGlAdmdlci5rZXJuZWwub3JnIiwgImJlOWU0YSJd Received: from smtp.codeaurora.org (ec2-35-166-182-171.us-west-2.compute.amazonaws.com [35.166.182.171]) by mxa.mailgun.org with ESMTP id 5e8325ad.7f7fb60870a0-smtp-out-n05; Tue, 31 Mar 2020 11:12:45 -0000 (UTC) Received: by smtp.codeaurora.org (Postfix, from userid 1001) id C7130C43637; Tue, 31 Mar 2020 11:12:43 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-caf-mail-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-1.0 required=2.0 tests=ALL_TRUSTED,SPF_NONE autolearn=unavailable autolearn_force=no version=3.4.0 Received: from akashast-linux.qualcomm.com (blr-c-bdr-fw-01_GlobalNAT_AllZones-Outside.qualcomm.com [103.229.19.19]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-SHA256 (128/128 bits)) (No client certificate requested) (Authenticated sender: akashast) by smtp.codeaurora.org (Postfix) with ESMTPSA id 4CA03C4478C; Tue, 31 Mar 2020 11:12:36 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org 4CA03C4478C Authentication-Results: aws-us-west-2-caf-mail-1.web.codeaurora.org; dmarc=none (p=none dis=none) header.from=codeaurora.org Authentication-Results: aws-us-west-2-caf-mail-1.web.codeaurora.org; spf=none smtp.mailfrom=akashast@codeaurora.org From: Akash Asthana To: gregkh@linuxfoundation.org, agross@kernel.org, bjorn.andersson@linaro.org, wsa@the-dreams.de, broonie@kernel.org, mark.rutland@arm.com, robh+dt@kernel.org, georgi.djakov@linaro.org Cc: linux-i2c@vger.kernel.org, linux-spi@vger.kernel.org, devicetree@vger.kernel.org, swboyd@chromium.org, mgautam@codeaurora.org, linux-arm-msm@vger.kernel.org, linux-serial@vger.kernel.org, mka@chromium.org, dianders@chromium.org, evgreen@chromium.org, Akash Asthana Subject: [PATCH V3 7/8] spi: spi-qcom-qspi: Add interconnect support Date: Tue, 31 Mar 2020 16:39:35 +0530 Message-Id: <1585652976-17481-8-git-send-email-akashast@codeaurora.org> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1585652976-17481-1-git-send-email-akashast@codeaurora.org> References: <1585652976-17481-1-git-send-email-akashast@codeaurora.org> Sender: linux-spi-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-spi@vger.kernel.org Get the interconnect paths for QSPI device and vote according to the current bus speed of the driver. Signed-off-by: Akash Asthana Reviewed-by: Matthias Kaehlcke --- Changes in V2: - As per Bjorn's comment, introduced and using devm_of_icc_get API for getting path handle - As per Matthias comment, added error handling for icc_set_bw call Changes in V3: - No Change. drivers/spi/spi-qcom-qspi.c | 46 ++++++++++++++++++++++++++++++++++++++++++++- 1 file changed, 45 insertions(+), 1 deletion(-) diff --git a/drivers/spi/spi-qcom-qspi.c b/drivers/spi/spi-qcom-qspi.c index 3c4f83b..ad48f43 100644 --- a/drivers/spi/spi-qcom-qspi.c +++ b/drivers/spi/spi-qcom-qspi.c @@ -2,6 +2,7 @@ // Copyright (c) 2017-2018, The Linux foundation. All rights reserved. #include +#include #include #include #include @@ -139,7 +140,10 @@ struct qcom_qspi { struct device *dev; struct clk_bulk_data *clks; struct qspi_xfer xfer; - /* Lock to protect xfer and IRQ accessed registers */ + struct icc_path *icc_path_cpu_to_qspi; + unsigned int avg_bw_cpu; + unsigned int peak_bw_cpu; + /* Lock to protect data accessed by IRQs */ spinlock_t lock; }; @@ -241,6 +245,20 @@ static int qcom_qspi_transfer_one(struct spi_master *master, return ret; } + /* + * Set BW quota for CPU as driver supports FIFO mode only. + * Assume peak bw as twice of avg bw. + */ + ctrl->avg_bw_cpu = Bps_to_icc(speed_hz); + ctrl->peak_bw_cpu = Bps_to_icc(2 * speed_hz); + ret = icc_set_bw(ctrl->icc_path_cpu_to_qspi, ctrl->avg_bw_cpu, + ctrl->peak_bw_cpu); + if (ret) { + dev_err(ctrl->dev, "%s: ICC BW voting failed for cpu\n", + __func__); + return ret; + } + spin_lock_irqsave(&ctrl->lock, flags); /* We are half duplex, so either rx or tx will be set */ @@ -458,6 +476,15 @@ static int qcom_qspi_probe(struct platform_device *pdev) if (ret) goto exit_probe_master_put; + ctrl->icc_path_cpu_to_qspi = devm_of_icc_get(dev, "qspi-config"); + if (IS_ERR(ctrl->icc_path_cpu_to_qspi)) { + ret = PTR_ERR(ctrl->icc_path_cpu_to_qspi); + goto exit_probe_master_put; + } + /* Put BW vote on CPU path for register access */ + ctrl->avg_bw_cpu = Bps_to_icc(1000); + ctrl->peak_bw_cpu = Bps_to_icc(1000); + ret = platform_get_irq(pdev, 0); if (ret < 0) goto exit_probe_master_put; @@ -511,9 +538,17 @@ static int __maybe_unused qcom_qspi_runtime_suspend(struct device *dev) { struct spi_master *master = dev_get_drvdata(dev); struct qcom_qspi *ctrl = spi_master_get_devdata(master); + int ret; clk_bulk_disable_unprepare(QSPI_NUM_CLKS, ctrl->clks); + ret = icc_set_bw(ctrl->icc_path_cpu_to_qspi, 0, 0); + if (ret) { + dev_err_ratelimited(ctrl->dev, "%s: ICC BW remove failed for cpu\n", + __func__); + return ret; + } + return 0; } @@ -521,6 +556,15 @@ static int __maybe_unused qcom_qspi_runtime_resume(struct device *dev) { struct spi_master *master = dev_get_drvdata(dev); struct qcom_qspi *ctrl = spi_master_get_devdata(master); + int ret; + + ret = icc_set_bw(ctrl->icc_path_cpu_to_qspi, ctrl->avg_bw_cpu, + ctrl->peak_bw_cpu); + if (ret) { + dev_err_ratelimited(ctrl->dev, "%s: ICC BW voting failed for cpu\n", + __func__); + return ret; + } return clk_bulk_prepare_enable(QSPI_NUM_CLKS, ctrl->clks); } From patchwork Tue Mar 31 11:09:36 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Akash Asthana X-Patchwork-Id: 11467621 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 B702717EA for ; Tue, 31 Mar 2020 11:13:00 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 82B8D208E0 for ; Tue, 31 Mar 2020 11:13:00 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=mg.codeaurora.org header.i=@mg.codeaurora.org header.b="rdW51H7K" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730645AbgCaLNA (ORCPT ); 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Tue, 31 Mar 2020 11:12:57 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-caf-mail-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-1.0 required=2.0 tests=ALL_TRUSTED,SPF_NONE autolearn=unavailable autolearn_force=no version=3.4.0 Received: from akashast-linux.qualcomm.com (blr-c-bdr-fw-01_GlobalNAT_AllZones-Outside.qualcomm.com [103.229.19.19]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-SHA256 (128/128 bits)) (No client certificate requested) (Authenticated sender: akashast) by smtp.codeaurora.org (Postfix) with ESMTPSA id 72D09C494AD; Tue, 31 Mar 2020 11:12:47 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org 72D09C494AD Authentication-Results: aws-us-west-2-caf-mail-1.web.codeaurora.org; dmarc=none (p=none dis=none) header.from=codeaurora.org Authentication-Results: aws-us-west-2-caf-mail-1.web.codeaurora.org; spf=none smtp.mailfrom=akashast@codeaurora.org From: Akash Asthana To: gregkh@linuxfoundation.org, agross@kernel.org, bjorn.andersson@linaro.org, wsa@the-dreams.de, broonie@kernel.org, mark.rutland@arm.com, robh+dt@kernel.org, georgi.djakov@linaro.org Cc: linux-i2c@vger.kernel.org, linux-spi@vger.kernel.org, devicetree@vger.kernel.org, swboyd@chromium.org, mgautam@codeaurora.org, linux-arm-msm@vger.kernel.org, linux-serial@vger.kernel.org, mka@chromium.org, dianders@chromium.org, evgreen@chromium.org, Akash Asthana Subject: [PATCH V3 8/8] arm64: dts: sc7180: Add interconnect for QUP and QSPI Date: Tue, 31 Mar 2020 16:39:36 +0530 Message-Id: <1585652976-17481-9-git-send-email-akashast@codeaurora.org> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1585652976-17481-1-git-send-email-akashast@codeaurora.org> References: <1585652976-17481-1-git-send-email-akashast@codeaurora.org> Sender: linux-spi-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-spi@vger.kernel.org Add interconnect ports for GENI QUPs and QSPI to set bus capabilities. Signed-off-by: Akash Asthana --- Changes in V2: - As per Bjorn's comment, ignoring 80 char limit in defining interconnects paths. Changes in V3: - No change. Note: This won't compile without patch@patchwork.kernel.org/patch/11430403 [arm64: dts: sc7180: Include interconnect definitions] arch/arm64/boot/dts/qcom/sc7180.dtsi | 127 +++++++++++++++++++++++++++++++++++ 1 file changed, 127 insertions(+) diff --git a/arch/arm64/boot/dts/qcom/sc7180.dtsi b/arch/arm64/boot/dts/qcom/sc7180.dtsi index 998f101..65d5c85 100644 --- a/arch/arm64/boot/dts/qcom/sc7180.dtsi +++ b/arch/arm64/boot/dts/qcom/sc7180.dtsi @@ -427,6 +427,8 @@ #size-cells = <2>; ranges; iommus = <&apps_smmu 0x43 0x0>; + interconnects = <&qup_virt MASTER_QUP_CORE_0 &qup_virt SLAVE_QUP_CORE_0>; + interconnect-names = "qup-core"; status = "disabled"; i2c0: i2c@880000 { @@ -439,6 +441,11 @@ interrupts = ; #address-cells = <1>; #size-cells = <0>; + interconnects = <&qup_virt MASTER_QUP_CORE_0 &qup_virt SLAVE_QUP_CORE_0>, + <&gem_noc MASTER_APPSS_PROC &config_noc SLAVE_QUP_0>, + <&aggre1_noc MASTER_QUP_0 &mc_virt SLAVE_EBI1>; + interconnect-names = "qup-core", "qup-config", + "qup-memory"; status = "disabled"; }; @@ -452,6 +459,9 @@ interrupts = ; #address-cells = <1>; #size-cells = <0>; + interconnects = <&qup_virt MASTER_QUP_CORE_0 &qup_virt SLAVE_QUP_CORE_0>, + <&gem_noc MASTER_APPSS_PROC &config_noc SLAVE_QUP_0>; + interconnect-names = "qup-core", "qup-config"; status = "disabled"; }; @@ -463,6 +473,9 @@ pinctrl-names = "default"; pinctrl-0 = <&qup_uart0_default>; interrupts = ; + interconnects = <&qup_virt MASTER_QUP_CORE_0 &qup_virt SLAVE_QUP_CORE_0>, + <&gem_noc MASTER_APPSS_PROC &config_noc SLAVE_QUP_0>; + interconnect-names = "qup-core", "qup-config"; status = "disabled"; }; @@ -476,6 +489,11 @@ interrupts = ; #address-cells = <1>; #size-cells = <0>; + interconnects = <&qup_virt MASTER_QUP_CORE_0 &qup_virt SLAVE_QUP_CORE_0>, + <&gem_noc MASTER_APPSS_PROC &config_noc SLAVE_QUP_0>, + <&aggre1_noc MASTER_QUP_0 &mc_virt SLAVE_EBI1>; + interconnect-names = "qup-core", "qup-config", + "qup-memory"; status = "disabled"; }; @@ -489,6 +507,9 @@ interrupts = ; #address-cells = <1>; #size-cells = <0>; + interconnects = <&qup_virt MASTER_QUP_CORE_0 &qup_virt SLAVE_QUP_CORE_0>, + <&gem_noc MASTER_APPSS_PROC &config_noc SLAVE_QUP_0>; + interconnect-names = "qup-core", "qup-config"; status = "disabled"; }; @@ -500,6 +521,9 @@ pinctrl-names = "default"; pinctrl-0 = <&qup_uart1_default>; interrupts = ; + interconnects = <&qup_virt MASTER_QUP_CORE_0 &qup_virt SLAVE_QUP_CORE_0>, + <&gem_noc MASTER_APPSS_PROC &config_noc SLAVE_QUP_0>; + interconnect-names = "qup-core", "qup-config"; status = "disabled"; }; @@ -513,6 +537,11 @@ interrupts = ; #address-cells = <1>; #size-cells = <0>; + interconnects = <&qup_virt MASTER_QUP_CORE_0 &qup_virt SLAVE_QUP_CORE_0>, + <&gem_noc MASTER_APPSS_PROC &config_noc SLAVE_QUP_0>, + <&aggre1_noc MASTER_QUP_0 &mc_virt SLAVE_EBI1>; + interconnect-names = "qup-core", "qup-config", + "qup-memory"; status = "disabled"; }; @@ -524,6 +553,9 @@ pinctrl-names = "default"; pinctrl-0 = <&qup_uart2_default>; interrupts = ; + interconnects = <&qup_virt MASTER_QUP_CORE_0 &qup_virt SLAVE_QUP_CORE_0>, + <&gem_noc MASTER_APPSS_PROC &config_noc SLAVE_QUP_0>; + interconnect-names = "qup-core", "qup-config"; status = "disabled"; }; @@ -537,6 +569,11 @@ interrupts = ; #address-cells = <1>; #size-cells = <0>; + interconnects = <&qup_virt MASTER_QUP_CORE_0 &qup_virt SLAVE_QUP_CORE_0>, + <&gem_noc MASTER_APPSS_PROC &config_noc SLAVE_QUP_0>, + <&aggre1_noc MASTER_QUP_0 &mc_virt SLAVE_EBI1>; + interconnect-names = "qup-core", "qup-config", + "qup-memory"; status = "disabled"; }; @@ -550,6 +587,9 @@ interrupts = ; #address-cells = <1>; #size-cells = <0>; + interconnects = <&qup_virt MASTER_QUP_CORE_0 &qup_virt SLAVE_QUP_CORE_0>, + <&gem_noc MASTER_APPSS_PROC &config_noc SLAVE_QUP_0>; + interconnect-names = "qup-core", "qup-config"; status = "disabled"; }; @@ -561,6 +601,9 @@ pinctrl-names = "default"; pinctrl-0 = <&qup_uart3_default>; interrupts = ; + interconnects = <&qup_virt MASTER_QUP_CORE_0 &qup_virt SLAVE_QUP_CORE_0>, + <&gem_noc MASTER_APPSS_PROC &config_noc SLAVE_QUP_0>; + interconnect-names = "qup-core", "qup-config"; status = "disabled"; }; @@ -574,6 +617,11 @@ interrupts = ; #address-cells = <1>; #size-cells = <0>; + interconnects = <&qup_virt MASTER_QUP_CORE_0 &qup_virt SLAVE_QUP_CORE_0>, + <&gem_noc MASTER_APPSS_PROC &config_noc SLAVE_QUP_0>, + <&aggre1_noc MASTER_QUP_0 &mc_virt SLAVE_EBI1>; + interconnect-names = "qup-core", "qup-config", + "qup-memory"; status = "disabled"; }; @@ -585,6 +633,9 @@ pinctrl-names = "default"; pinctrl-0 = <&qup_uart4_default>; interrupts = ; + interconnects = <&qup_virt MASTER_QUP_CORE_0 &qup_virt SLAVE_QUP_CORE_0>, + <&gem_noc MASTER_APPSS_PROC &config_noc SLAVE_QUP_0>; + interconnect-names = "qup-core", "qup-config"; status = "disabled"; }; @@ -598,6 +649,11 @@ interrupts = ; #address-cells = <1>; #size-cells = <0>; + interconnects = <&qup_virt MASTER_QUP_CORE_0 &qup_virt SLAVE_QUP_CORE_0>, + <&gem_noc MASTER_APPSS_PROC &config_noc SLAVE_QUP_0>, + <&aggre1_noc MASTER_QUP_0 &mc_virt SLAVE_EBI1>; + interconnect-names = "qup-core", "qup-config", + "qup-memory"; status = "disabled"; }; @@ -611,6 +667,9 @@ interrupts = ; #address-cells = <1>; #size-cells = <0>; + interconnects = <&qup_virt MASTER_QUP_CORE_0 &qup_virt SLAVE_QUP_CORE_0>, + <&gem_noc MASTER_APPSS_PROC &config_noc SLAVE_QUP_0>; + interconnect-names = "qup-core", "qup-config"; status = "disabled"; }; @@ -622,6 +681,9 @@ pinctrl-names = "default"; pinctrl-0 = <&qup_uart5_default>; interrupts = ; + interconnects = <&qup_virt MASTER_QUP_CORE_0 &qup_virt SLAVE_QUP_CORE_0>, + <&gem_noc MASTER_APPSS_PROC &config_noc SLAVE_QUP_0>; + interconnect-names = "qup-core", "qup-config"; status = "disabled"; }; }; @@ -636,6 +698,8 @@ #size-cells = <2>; ranges; iommus = <&apps_smmu 0x4c3 0x0>; + interconnects = <&qup_virt MASTER_QUP_CORE_1 &qup_virt SLAVE_QUP_CORE_1>; + interconnect-names = "qup-core"; status = "disabled"; i2c6: i2c@a80000 { @@ -648,6 +712,11 @@ interrupts = ; #address-cells = <1>; #size-cells = <0>; + interconnects = <&qup_virt MASTER_QUP_CORE_1 &qup_virt SLAVE_QUP_CORE_1>, + <&gem_noc MASTER_APPSS_PROC &config_noc SLAVE_QUP_1>, + <&aggre2_noc MASTER_QUP_1 &mc_virt SLAVE_EBI1>; + interconnect-names = "qup-core", "qup-config", + "qup-memory"; status = "disabled"; }; @@ -661,6 +730,9 @@ interrupts = ; #address-cells = <1>; #size-cells = <0>; + interconnects = <&qup_virt MASTER_QUP_CORE_1 &qup_virt SLAVE_QUP_CORE_1>, + <&gem_noc MASTER_APPSS_PROC &config_noc SLAVE_QUP_1>; + interconnect-names = "qup-core", "qup-config"; status = "disabled"; }; @@ -672,6 +744,9 @@ pinctrl-names = "default"; pinctrl-0 = <&qup_uart6_default>; interrupts = ; + interconnects = <&qup_virt MASTER_QUP_CORE_1 &qup_virt SLAVE_QUP_CORE_1>, + <&gem_noc MASTER_APPSS_PROC &config_noc SLAVE_QUP_1>; + interconnect-names = "qup-core", "qup-config"; status = "disabled"; }; @@ -685,6 +760,11 @@ interrupts = ; #address-cells = <1>; #size-cells = <0>; + interconnects = <&qup_virt MASTER_QUP_CORE_1 &qup_virt SLAVE_QUP_CORE_1>, + <&gem_noc MASTER_APPSS_PROC &config_noc SLAVE_QUP_1>, + <&aggre2_noc MASTER_QUP_1 &mc_virt SLAVE_EBI1>; + interconnect-names = "qup-core", "qup-config", + "qup-memory"; status = "disabled"; }; @@ -696,6 +776,9 @@ pinctrl-names = "default"; pinctrl-0 = <&qup_uart7_default>; interrupts = ; + interconnects = <&qup_virt MASTER_QUP_CORE_1 &qup_virt SLAVE_QUP_CORE_1>, + <&gem_noc MASTER_APPSS_PROC &config_noc SLAVE_QUP_1>; + interconnect-names = "qup-core", "qup-config"; status = "disabled"; }; @@ -709,6 +792,11 @@ interrupts = ; #address-cells = <1>; #size-cells = <0>; + interconnects = <&qup_virt MASTER_QUP_CORE_1 &qup_virt SLAVE_QUP_CORE_1>, + <&gem_noc MASTER_APPSS_PROC &config_noc SLAVE_QUP_1>, + <&aggre2_noc MASTER_QUP_1 &mc_virt SLAVE_EBI1>; + interconnect-names = "qup-core", "qup-config", + "qup-memory"; status = "disabled"; }; @@ -722,6 +810,9 @@ interrupts = ; #address-cells = <1>; #size-cells = <0>; + interconnects = <&qup_virt MASTER_QUP_CORE_1 &qup_virt SLAVE_QUP_CORE_1>, + <&gem_noc MASTER_APPSS_PROC &config_noc SLAVE_QUP_1>; + interconnect-names = "qup-core", "qup-config"; status = "disabled"; }; @@ -733,6 +824,9 @@ pinctrl-names = "default"; pinctrl-0 = <&qup_uart8_default>; interrupts = ; + interconnects = <&qup_virt MASTER_QUP_CORE_1 &qup_virt SLAVE_QUP_CORE_1>, + <&gem_noc MASTER_APPSS_PROC &config_noc SLAVE_QUP_1>; + interconnect-names = "qup-core", "qup-config"; status = "disabled"; }; @@ -746,6 +840,11 @@ interrupts = ; #address-cells = <1>; #size-cells = <0>; + interconnects = <&qup_virt MASTER_QUP_CORE_1 &qup_virt SLAVE_QUP_CORE_1>, + <&gem_noc MASTER_APPSS_PROC &config_noc SLAVE_QUP_1>, + <&aggre2_noc MASTER_QUP_1 &mc_virt SLAVE_EBI1>; + interconnect-names = "qup-core", "qup-config", + "qup-memory"; status = "disabled"; }; @@ -757,6 +856,9 @@ pinctrl-names = "default"; pinctrl-0 = <&qup_uart9_default>; interrupts = ; + interconnects = <&qup_virt MASTER_QUP_CORE_1 &qup_virt SLAVE_QUP_CORE_1>, + <&gem_noc MASTER_APPSS_PROC &config_noc SLAVE_QUP_1>; + interconnect-names = "qup-core", "qup-config"; status = "disabled"; }; @@ -770,6 +872,11 @@ interrupts = ; #address-cells = <1>; #size-cells = <0>; + interconnects = <&qup_virt MASTER_QUP_CORE_1 &qup_virt SLAVE_QUP_CORE_1>, + <&gem_noc MASTER_APPSS_PROC &config_noc SLAVE_QUP_1>, + <&aggre2_noc MASTER_QUP_1 &mc_virt SLAVE_EBI1>; + interconnect-names = "qup-core", "qup-config", + "qup-memory"; status = "disabled"; }; @@ -783,6 +890,9 @@ interrupts = ; #address-cells = <1>; #size-cells = <0>; + interconnects = <&qup_virt MASTER_QUP_CORE_1 &qup_virt SLAVE_QUP_CORE_1>, + <&gem_noc MASTER_APPSS_PROC &config_noc SLAVE_QUP_1>; + interconnect-names = "qup-core", "qup-config"; status = "disabled"; }; @@ -794,6 +904,9 @@ pinctrl-names = "default"; pinctrl-0 = <&qup_uart10_default>; interrupts = ; + interconnects = <&qup_virt MASTER_QUP_CORE_1 &qup_virt SLAVE_QUP_CORE_1>, + <&gem_noc MASTER_APPSS_PROC &config_noc SLAVE_QUP_1>; + interconnect-names = "qup-core", "qup-config"; status = "disabled"; }; @@ -807,6 +920,11 @@ interrupts = ; #address-cells = <1>; #size-cells = <0>; + interconnects = <&qup_virt MASTER_QUP_CORE_1 &qup_virt SLAVE_QUP_CORE_1>, + <&gem_noc MASTER_APPSS_PROC &config_noc SLAVE_QUP_1>, + <&aggre2_noc MASTER_QUP_1 &mc_virt SLAVE_EBI1>; + interconnect-names = "qup-core", "qup-config", + "qup-memory"; status = "disabled"; }; @@ -820,6 +938,9 @@ interrupts = ; #address-cells = <1>; #size-cells = <0>; + interconnects = <&qup_virt MASTER_QUP_CORE_1 &qup_virt SLAVE_QUP_CORE_1>, + <&gem_noc MASTER_APPSS_PROC &config_noc SLAVE_QUP_1>; + interconnect-names = "qup-core", "qup-config"; status = "disabled"; }; @@ -831,6 +952,9 @@ pinctrl-names = "default"; pinctrl-0 = <&qup_uart11_default>; interrupts = ; + interconnects = <&qup_virt MASTER_QUP_CORE_1 &qup_virt SLAVE_QUP_CORE_1>, + <&gem_noc MASTER_APPSS_PROC &config_noc SLAVE_QUP_1>; + interconnect-names = "qup-core", "qup-config"; status = "disabled"; }; }; @@ -1335,6 +1459,9 @@ clocks = <&gcc GCC_QSPI_CNOC_PERIPH_AHB_CLK>, <&gcc GCC_QSPI_CORE_CLK>; clock-names = "iface", "core"; + interconnects = <&gem_noc MASTER_APPSS_PROC + &config_noc SLAVE_QSPI_0>; + interconnect-names = "qspi-config"; status = "disabled"; };