From patchwork Wed Jun 14 18:04:28 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Konrad Dybcio X-Patchwork-Id: 693830 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 9BBD1C05051 for ; Wed, 14 Jun 2023 18:05:35 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S240866AbjFNSFc (ORCPT ); Wed, 14 Jun 2023 14:05:32 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:37682 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236967AbjFNSEy (ORCPT ); Wed, 14 Jun 2023 14:04:54 -0400 Received: from mail-lf1-x133.google.com (mail-lf1-x133.google.com [IPv6:2a00:1450:4864:20::133]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 93C1D26B8 for ; Wed, 14 Jun 2023 11:04:49 -0700 (PDT) Received: by mail-lf1-x133.google.com with SMTP id 2adb3069b0e04-4f76a4c211dso992787e87.3 for ; Wed, 14 Jun 2023 11:04:49 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1686765887; x=1689357887; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:from:to:cc:subject:date:message-id :reply-to; bh=J74hRLqdt4phs0w4W6UJv8aBJOI01g/JO9GJ5bngPB0=; b=aJft9mlYztYXjpqZB04XC1o8/3JEVe7q+IhZdoS04JzIW+Bxccn1JyhO8ucm4r5XAL uaZwuBTyVtvePfl7uvmnhdwjWYjltNEaZXWAYoGwnE6uUsS1fE0GuUYdaQtSrXTcW3/C aGTr6siT1RInQL/SzA9SWuLgrXtrGWeqdqze4jLeE7ootKJEvbX5/gyVfnfDVDTwWssl XgsmnqPcxY5bDPv31w1OZF4PljVoJZScTb2uZkhZYNgnxn5C7KW9K8urUlDFlz/BK55S FrUATfUmSOUYhp3dV9KqOTurOelcv3SelQVL2gmA4NTHfZo8SRXEHXR3axxkWOWOddsb 4lqg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1686765887; x=1689357887; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=J74hRLqdt4phs0w4W6UJv8aBJOI01g/JO9GJ5bngPB0=; b=FWKGFYe8nr1jZ/jgaLKtEk/48aFA1B4QPLzowt3BJYiWybI5Cv0jzIgWl9CqWbva00 8vGZysz7AE1s/mVVZ8akqZcWYOMlIW+HVVgW17JFv7HaDSMxgp357+VhpBW3rcr8Zue+ 6OEhw0ErQ0oyV1EzaKkz5/erCAy1jPG4nSm6BIznL/hrZyJEKGRJUQkEV6qx0cf6qOo/ nduu/n9IiSEcG5uvSXJvL+38lkiZyBAjgYFEQNbOZhuf9uDU7DbH06mthlmuyFSJ3cpa xk5gdgGSROCvlrw4WIWaiszOeb5YJkdjMFwI9EvSP/v1Hjk9vt1VWVa6LhPN7b1l3cZf 2/9w== X-Gm-Message-State: AC+VfDxhI/13Tx9OAgNp74+LXRI4tEHdFMj7M+tF0tLlu9TrZ8hDwAKR l6wcYaxQ446tbbuV4uqa6fS67g== X-Google-Smtp-Source: ACHHUZ672V+6XbQkVKXR8YYblH3aL/UgXv+4sxCLSH/fHh8s0F22yKCKPz3WvpNfLgDhya9E+UwLRA== X-Received: by 2002:ac2:5bca:0:b0:4f6:2c03:36b0 with SMTP id u10-20020ac25bca000000b004f62c0336b0mr8039232lfn.26.1686765887589; Wed, 14 Jun 2023 11:04:47 -0700 (PDT) Received: from [192.168.1.101] (abyj190.neoplus.adsl.tpnet.pl. [83.9.29.190]) by smtp.gmail.com with ESMTPSA id l18-20020a19c212000000b004eff1f7f206sm2224053lfc.9.2023.06.14.11.04.46 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 14 Jun 2023 11:04:47 -0700 (PDT) From: Konrad Dybcio Date: Wed, 14 Jun 2023 20:04:28 +0200 Subject: [PATCH v6 09/22] interconnect: qcom: smd-rpm: Add rpmcc handling skeleton code MIME-Version: 1.0 Message-Id: <20230526-topic-smd_icc-v6-9-263283111e66@linaro.org> References: <20230526-topic-smd_icc-v6-0-263283111e66@linaro.org> In-Reply-To: <20230526-topic-smd_icc-v6-0-263283111e66@linaro.org> To: Andy Gross , Bjorn Andersson , Michael Turquette , Stephen Boyd , Georgi Djakov , Leo Yan , Evan Green , Rob Herring , Krzysztof Kozlowski , Conor Dooley Cc: Marijn Suijten , linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org, linux-clk@vger.kernel.org, linux-pm@vger.kernel.org, devicetree@vger.kernel.org, Konrad Dybcio , Stephan Gerhold X-Mailer: b4 0.12.2 X-Developer-Signature: v=1; a=ed25519-sha256; t=1686765872; l=3261; i=konrad.dybcio@linaro.org; s=20230215; h=from:subject:message-id; bh=q5JnbdD4AZQp53PuMKdCoeW41i5whKLsOXgMlTL64nI=; b=tafWmjRtwf+e8Suf9DtjEJQCeY2j9wH0XotnHZCko9vHv9bf1sFuh7Y6XEwih31jHwJBEwxj7 1YIhEZFvBEFBgMODgZ+3PcSoWUMdJFrrlfVNP304vDARdlVQ3THNzVG X-Developer-Key: i=konrad.dybcio@linaro.org; a=ed25519; pk=iclgkYvtl2w05SSXO5EjjSYlhFKsJ+5OSZBjOkQuEms= Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org Introduce qcom_icc_rpm_set_bus_rate() in preparation for handling RPM clock resources within the interconnect framework. This lets us greatly simplify all of the code handling, as setting the rate comes down to: u32 rate_khz = max(clk.sleep_rate, clk.active_rate, clk_a.active_rate) write_to_rpm(clock.description, rate_khz); Reviewed-by: Stephan Gerhold Signed-off-by: Konrad Dybcio --- drivers/interconnect/qcom/icc-rpm.h | 15 +++++++++++++++ drivers/interconnect/qcom/smd-rpm.c | 21 +++++++++++++++++++++ 2 files changed, 36 insertions(+) diff --git a/drivers/interconnect/qcom/icc-rpm.h b/drivers/interconnect/qcom/icc-rpm.h index 4755e422d2d1..5c43a8023ffa 100644 --- a/drivers/interconnect/qcom/icc-rpm.h +++ b/drivers/interconnect/qcom/icc-rpm.h @@ -25,6 +25,18 @@ enum qcom_icc_type { QCOM_ICC_QNOC, }; +/** + * struct rpm_clk_resource - RPM bus clock resource + * @resource_type: RPM resource type of the clock resource + * @clock_id: index of the clock resource of a specific resource type + * @branch: whether the resource represents a branch clock +*/ +struct rpm_clk_resource { + u32 resource_type; + u32 clock_id; + bool branch; +}; + #define NUM_BUS_CLKS 2 /** @@ -50,6 +62,7 @@ struct qcom_icc_provider { unsigned int qos_offset; u64 bus_clk_rate[NUM_BUS_CLKS]; struct clk_bulk_data bus_clks[NUM_BUS_CLKS]; + const struct rpm_clk_resource *bus_clk_desc; struct clk_bulk_data *intf_clks; bool keep_alive; bool is_on; @@ -107,6 +120,7 @@ struct qcom_icc_desc { struct qcom_icc_node * const *nodes; size_t num_nodes; const char * const *bus_clocks; + const struct rpm_clk_resource *bus_clk_desc; const char * const *intf_clocks; size_t num_intf_clocks; bool keep_alive; @@ -128,5 +142,6 @@ int qnoc_remove(struct platform_device *pdev); bool qcom_icc_rpm_smd_available(void); int qcom_icc_rpm_smd_send(int ctx, int rsc_type, int id, u32 val); +int qcom_icc_rpm_set_bus_rate(const struct rpm_clk_resource *clk, int ctx, u32 rate); #endif diff --git a/drivers/interconnect/qcom/smd-rpm.c b/drivers/interconnect/qcom/smd-rpm.c index b0183262ba66..24bc994e1a12 100644 --- a/drivers/interconnect/qcom/smd-rpm.c +++ b/drivers/interconnect/qcom/smd-rpm.c @@ -16,6 +16,7 @@ #include "icc-rpm.h" #define RPM_KEY_BW 0x00007762 +#define QCOM_RPM_SMD_KEY_RATE 0x007a484b static struct qcom_smd_rpm *icc_smd_rpm; @@ -44,6 +45,26 @@ int qcom_icc_rpm_smd_send(int ctx, int rsc_type, int id, u32 val) } EXPORT_SYMBOL_GPL(qcom_icc_rpm_smd_send); +int qcom_icc_rpm_set_bus_rate(const struct rpm_clk_resource *clk, int ctx, u32 rate) +{ + struct clk_smd_rpm_req req = { + .key = cpu_to_le32(QCOM_RPM_SMD_KEY_RATE), + .nbytes = cpu_to_le32(sizeof(u32)), + }; + + /* Branch clocks are only on/off */ + if (clk->branch) + rate = !!rate; + + req.value = cpu_to_le32(rate); + return qcom_rpm_smd_write(icc_smd_rpm, + ctx, + clk->resource_type, + clk->clock_id, + &req, sizeof(req)); +} +EXPORT_SYMBOL_GPL(qcom_icc_rpm_set_bus_rate); + static int qcom_icc_rpm_smd_remove(struct platform_device *pdev) { icc_smd_rpm = NULL;