From patchwork Fri Sep 25 10:31:14 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Srinivas Kandagatla X-Patchwork-Id: 11799507 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 4B4A6112E for ; Fri, 25 Sep 2020 10:31:40 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 2647721D91 for ; Fri, 25 Sep 2020 10:31:40 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=linaro.org header.i=@linaro.org header.b="C6HLOUjC" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728016AbgIYKbj (ORCPT ); Fri, 25 Sep 2020 06:31:39 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:45304 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727044AbgIYKbi (ORCPT ); Fri, 25 Sep 2020 06:31:38 -0400 Received: from mail-wm1-x341.google.com (mail-wm1-x341.google.com [IPv6:2a00:1450:4864:20::341]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 384EEC0613E1 for ; Fri, 25 Sep 2020 03:31:38 -0700 (PDT) Received: by mail-wm1-x341.google.com with SMTP id a9so2729634wmm.2 for ; Fri, 25 Sep 2020 03:31:38 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=K8Xn4wOHHUJwjkvQ1rzRkGU3cJ1+9NVMvXhKw81XLXM=; b=C6HLOUjCSGKbC5jruIIZSIlNvRY1Npvr5V+TnVAmNjRI3TraO7orO0bLxM3BSB9vow HjHgMB9anLA+IiFcK5rJy8CSOASvRtI5d4GsywyrTOAVKUCqPzRr3IGnS6a25nVtd3+0 a0NrNCa8GIS+m3OERfThK8X3SDF2CDnezEV1H5aceceg+NO/q+8Wq7uWjRQ5/V0Iu2bI GbsWfkENVzygizGBxBtNB9bnCX7Y8/p3uhFUDQtHDr7wOgNlKHqLT3oIeU5AEopZ39fp t6z8TV1uDWmifem/w7fbYC2tKSGbvxxGMzSE3EiiBkegMbSbDsQF6nXWrSZ2wEiJkcew Q54A== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=K8Xn4wOHHUJwjkvQ1rzRkGU3cJ1+9NVMvXhKw81XLXM=; b=a658dRPxPUhiJJhfKZKfY3NLzlitrEEo3QBtLidq5RcSUK4HZo/fRG6+sHk82PL3zq VbOldtvWTCFLY9e95iGLZj2LopyLa5qF6XVr5c1NW6kG2ciulDo/Hh+mBUVMKEe133SO GWAEW7dYDwOzx7Z/T1xV3s70Ty8t8/i8SRrEbU00CKTFSLfjlLTsEqF/Lki05GS0iAnx mCl/UJCu6SYgPNANdf7NQVa8n4ju5jeUUwsKoW30sfeFkWNzJTaGnu+38OhKIlMWyrma Dw2HGGgjgSK1jtWi0KVUCGBh7KcBb44rSsfRIrpwv3RvZbfu3341qYUiaBvcLhGk0n9B J2Qw== X-Gm-Message-State: AOAM532MhGI7ts4WL0fjcQ+jME6Gn0XV14YzsZvhH2X7OUT4/8YZV78f WAaSth5ErOePZ6LGoh+Au7K/pQ== X-Google-Smtp-Source: ABdhPJzRmNG7vWwVgcaVpFq3Occzh2ja8Su2EqfqMGPhbAmEjXQsMCwy2xldeLjDhSNJ3iswVh2dZg== X-Received: by 2002:a1c:2e4b:: with SMTP id u72mr2406065wmu.69.1601029896825; Fri, 25 Sep 2020 03:31:36 -0700 (PDT) Received: from srini-hackbox.lan (cpc86377-aztw32-2-0-cust226.18-1.cable.virginm.net. [92.233.226.227]) by smtp.gmail.com with ESMTPSA id 11sm2354907wmi.14.2020.09.25.03.31.35 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 25 Sep 2020 03:31:36 -0700 (PDT) From: Srinivas Kandagatla To: sboyd@kernel.org, linux-clk@vger.kernel.org, devicetree@vger.kernel.org Cc: bjorn.andersson@linaro.org, mturquette@baylibre.com, robh+dt@kernel.org, linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org, Srinivas Kandagatla Subject: [PATCH v2 3/4] clk: qcom: Add support to LPASS AUDIO_CC Glitch Free Mux clocks Date: Fri, 25 Sep 2020 11:31:14 +0100 Message-Id: <20200925103115.15191-4-srinivas.kandagatla@linaro.org> X-Mailer: git-send-email 2.21.0 In-Reply-To: <20200925103115.15191-1-srinivas.kandagatla@linaro.org> References: <20200925103115.15191-1-srinivas.kandagatla@linaro.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-clk@vger.kernel.org GFM Muxes in AUDIO_CC control clocks to LPASS WSA and RX Codec Macros. This patch adds support to these muxes. Signed-off-by: Srinivas Kandagatla --- drivers/clk/qcom/Kconfig | 6 + drivers/clk/qcom/Makefile | 1 + drivers/clk/qcom/lpass-gfm-sm8250.c | 260 ++++++++++++++++++++++++++++ 3 files changed, 267 insertions(+) create mode 100644 drivers/clk/qcom/lpass-gfm-sm8250.c diff --git a/drivers/clk/qcom/Kconfig b/drivers/clk/qcom/Kconfig index 058327310c25..08078f4b0591 100644 --- a/drivers/clk/qcom/Kconfig +++ b/drivers/clk/qcom/Kconfig @@ -475,4 +475,10 @@ config KRAITCC Support for the Krait CPU clocks on Qualcomm devices. Say Y if you want to support CPU frequency scaling. +config CLK_GFM_LPASS_SM8250 + tristate "GFM LPASS Clocks" + help + Support for the GFM Glitch Free Mux LPASS clock. Say Y + if you want to support GFM Clocks on LPASS for SM8250 SoC. + endif diff --git a/drivers/clk/qcom/Makefile b/drivers/clk/qcom/Makefile index 9677e769e7e9..7465cabc86aa 100644 --- a/drivers/clk/qcom/Makefile +++ b/drivers/clk/qcom/Makefile @@ -19,6 +19,7 @@ clk-qcom-$(CONFIG_QCOM_GDSC) += gdsc.o # Keep alphabetically sorted by config obj-$(CONFIG_APQ_GCC_8084) += gcc-apq8084.o obj-$(CONFIG_APQ_MMCC_8084) += mmcc-apq8084.o +obj-$(CONFIG_CLK_GFM_LPASS_SM8250) += lpass-gfm-sm8250.o obj-$(CONFIG_IPQ_APSS_PLL) += apss-ipq-pll.o obj-$(CONFIG_IPQ_APSS_6018) += apss-ipq6018.o obj-$(CONFIG_IPQ_GCC_4019) += gcc-ipq4019.o diff --git a/drivers/clk/qcom/lpass-gfm-sm8250.c b/drivers/clk/qcom/lpass-gfm-sm8250.c new file mode 100644 index 000000000000..c79854e1494d --- /dev/null +++ b/drivers/clk/qcom/lpass-gfm-sm8250.c @@ -0,0 +1,260 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * LPASS Audio CC and Always ON CC Glitch Free Mux clock driver + * + * Copyright (c) 2020 Linaro Ltd. + * Author: Srinivas Kandagatla + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +struct lpass_gfm { + struct device *dev; + void __iomem *base; +}; + +struct clk_gfm { + unsigned int mux_reg; + unsigned int mux_mask; + struct clk_hw hw; + struct lpass_gfm *priv; + void __iomem *gfm_mux; +}; + +#define GFM_MASK BIT(1) +#define to_clk_gfm(_hw) container_of(_hw, struct clk_gfm, hw) + +static u8 clk_gfm_get_parent(struct clk_hw *hw) +{ + struct clk_gfm *clk = to_clk_gfm(hw); + + return readl(clk->gfm_mux) & GFM_MASK; +} + +static int clk_gfm_set_parent(struct clk_hw *hw, u8 index) +{ + struct clk_gfm *clk = to_clk_gfm(hw); + unsigned int val; + + val = readl(clk->gfm_mux); + + if (index) + val |= GFM_MASK; + else + val &= ~GFM_MASK; + + writel(val, clk->gfm_mux); + + return 0; +} + +static const struct clk_ops clk_gfm_ops = { + .get_parent = clk_gfm_get_parent, + .set_parent = clk_gfm_set_parent, + .determine_rate = __clk_mux_determine_rate, +}; + +static struct clk_gfm lpass_gfm_wsa_mclk = { + .mux_reg = 0x220d8, + .mux_mask = BIT(0), + .hw.init = &(struct clk_init_data) { + .name = "WSA_MCLK", + .ops = &clk_gfm_ops, + .flags = CLK_SET_RATE_PARENT | CLK_OPS_PARENT_ENABLE, + .parent_data = (const struct clk_parent_data[]){ + { + .index = 0, + .name = "LPASS_CLK_ID_TX_CORE_MCLK", + }, { + .index = 1, + .name = "LPASS_CLK_ID_WSA_CORE_MCLK", + }, + }, + .num_parents = 2, + }, +}; + +static struct clk_gfm lpass_gfm_wsa_npl = { + .mux_reg = 0x220d8, + .mux_mask = BIT(0), + .hw.init = &(struct clk_init_data) { + .name = "WSA_NPL", + .ops = &clk_gfm_ops, + .flags = CLK_SET_RATE_PARENT | CLK_OPS_PARENT_ENABLE, + .parent_data = (const struct clk_parent_data[]){ + { + .index = 0, + .name = "LPASS_CLK_ID_TX_CORE_NPL_MCLK", + }, { + .index = 1, + .name = "LPASS_CLK_ID_WSA_CORE_NPL_MCLK", + }, + }, + .num_parents = 2, + }, +}; + +static struct clk_gfm lpass_gfm_rx_mclk_mclk2 = { + .mux_reg = 0x240d8, + .mux_mask = BIT(0), + .hw.init = &(struct clk_init_data) { + .name = "RX_MCLK_MCLK2", + .ops = &clk_gfm_ops, + .flags = CLK_SET_RATE_PARENT | CLK_OPS_PARENT_ENABLE, + .parent_data = (const struct clk_parent_data[]){ + { + .index = 0, + .name = "LPASS_CLK_ID_TX_CORE_MCLK", + }, { + .index = 1, + .name = "LPASS_CLK_ID_RX_CORE_MCLK", + }, + }, + .num_parents = 2, + }, +}; + +static struct clk_gfm lpass_gfm_rx_npl = { + .mux_reg = 0x240d8, + .mux_mask = BIT(0), + .hw.init = &(struct clk_init_data) { + .name = "RX_NPL", + .ops = &clk_gfm_ops, + .flags = CLK_SET_RATE_PARENT | CLK_OPS_PARENT_ENABLE, + .parent_data = (const struct clk_parent_data[]){ + { + .index = 0, + .name = "LPASS_CLK_ID_TX_CORE_NPL_MCLK", + }, { + .index = 1, + .name = "LPASS_CLK_ID_RX_CORE_NPL_MCLK", + }, + }, + .num_parents = 2, + }, +}; + +static struct clk_gfm *audiocc_gfm_clks[] = { + [LPASS_CDC_WSA_NPL] = &lpass_gfm_wsa_npl, + [LPASS_CDC_WSA_MCLK] = &lpass_gfm_wsa_mclk, + [LPASS_CDC_RX_NPL] = &lpass_gfm_rx_npl, + [LPASS_CDC_RX_MCLK_MCLK2] = &lpass_gfm_rx_mclk_mclk2, +}; + +static struct clk_hw_onecell_data audiocc_hw_onecell_data = { + .hws = { + [LPASS_CDC_WSA_NPL] = &lpass_gfm_wsa_npl.hw, + [LPASS_CDC_WSA_MCLK] = &lpass_gfm_wsa_mclk.hw, + [LPASS_CDC_RX_NPL] = &lpass_gfm_rx_npl.hw, + [LPASS_CDC_RX_MCLK_MCLK2] = &lpass_gfm_rx_mclk_mclk2.hw, + }, + .num = ARRAY_SIZE(audiocc_gfm_clks), +}; + +struct lpass_gfm_data { + struct clk_hw_onecell_data *onecell_data; + struct clk_gfm **gfm_clks; +}; + +static struct lpass_gfm_data audiocc_data = { + .onecell_data = &audiocc_hw_onecell_data, + .gfm_clks = audiocc_gfm_clks, +}; + +static int lpass_gfm_clk_driver_probe(struct platform_device *pdev) +{ + const struct lpass_gfm_data *data; + struct device *dev = &pdev->dev; + struct resource *res; + struct clk_gfm *gfm; + struct lpass_gfm *cc; + int err, i; + + data = of_device_get_match_data(dev); + if (!data) + return -EINVAL; + + cc = devm_kzalloc(dev, sizeof(*cc), GFP_KERNEL); + if (!cc) + return -ENOMEM; + + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + cc->base = devm_ioremap_resource(dev, res); + if (IS_ERR(cc->base)) + return PTR_ERR(cc->base); + + pm_runtime_enable(dev); + err = pm_clk_create(dev); + if (err) + goto pm_clk_err; + + err = of_pm_clk_add_clks(dev); + if (err < 0) { + dev_dbg(dev, "Failed to get lpass core voting clocks\n"); + goto clk_reg_err; + } + + for (i = 0; i < data->onecell_data->num; i++) { + if (!data->gfm_clks[i]) + continue; + + gfm = data->gfm_clks[i]; + gfm->priv = cc; + gfm->gfm_mux = cc->base; + gfm->gfm_mux = gfm->gfm_mux + data->gfm_clks[i]->mux_reg; + + err = devm_clk_hw_register(dev, &data->gfm_clks[i]->hw); + if (err) + goto clk_reg_err; + + } + + err = devm_of_clk_add_hw_provider(dev, of_clk_hw_onecell_get, + data->onecell_data); + if (err) + goto clk_reg_err; + + return 0; + +clk_reg_err: + pm_clk_destroy(dev); +pm_clk_err: + pm_runtime_disable(dev); + return err; +} + +static const struct of_device_id lpass_gfm_clk_match_table[] = { + { + .compatible = "qcom,sm8250-lpass-audiocc", + .data = &audiocc_data, + }, + { } +}; +MODULE_DEVICE_TABLE(of, lpass_gfm_clk_match_table); + +static const struct dev_pm_ops lpass_gfm_pm_ops = { + SET_RUNTIME_PM_OPS(pm_clk_suspend, pm_clk_resume, NULL) +}; + +static struct platform_driver lpass_gfm_clk_driver = { + .probe = lpass_gfm_clk_driver_probe, + .driver = { + .name = "lpass-gfm-clk", + .of_match_table = lpass_gfm_clk_match_table, + .pm = &lpass_gfm_pm_ops, + }, +}; +module_platform_driver(lpass_gfm_clk_driver); +MODULE_LICENSE("GPL v2");