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[2620:137:e000::1:20]) by mx.google.com with ESMTP id j7-20020a056a00234700b0056c057b09b0si6638229pfj.216.2022.12.01.15.01.00; Thu, 01 Dec 2022 15:01:15 -0800 (PST) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; dkim=pass header.i=@sberdevices.ru header.s=mail header.b=LFOHEGZm; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=QUARANTINE sp=QUARANTINE dis=NONE) header.from=sberdevices.ru Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231817AbiLAW6U (ORCPT + 99 others); Thu, 1 Dec 2022 17:58:20 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:51256 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231676AbiLAW5k (ORCPT ); Thu, 1 Dec 2022 17:57:40 -0500 Received: from mx.sberdevices.ru (mx.sberdevices.ru [45.89.227.171]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id A377FA18D; Thu, 1 Dec 2022 14:57:38 -0800 (PST) Received: from s-lin-edge02.sberdevices.ru (localhost [127.0.0.1]) by mx.sberdevices.ru (Postfix) with ESMTP id 9A1625FD11; Fri, 2 Dec 2022 01:57:34 +0300 (MSK) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=sberdevices.ru; s=mail; t=1669935454; bh=yHtPjPY3Pi0E/KZWXUevKiyPqbylvlBtgVBnbDvgnbs=; h=From:To:Subject:Date:Message-ID:MIME-Version:Content-Type; b=LFOHEGZmp06vMwQ5GWGxpoVqJ/+6kVODPQp18Ln2PwmfT920wdR6JTl+lEMra3y6g USXmvoFfvUa9p1zdBVBZRDhgKpgXnORpNaS2xOQCihCXCe5tKcsRMrmzu5HiI4MSuN y/FmvsV3z9cpShuuM1k+z1ZDHS5+jBWxyhWcnL5qb8vzyVlBrr00kXRF+w6xT/iYLq xinQQ+3Zlz2GpPO3YXUMDpV2ubuCZJa18HZbl/Hv0Ab8pZNQQSdVQ2cqyUcLc3wgWB WHDK44JlpTdoQWwYtU9LW3F1hFIz7DHxBuP5x40tJHN9Nzw39ajzDRH///UV2DP7sE XyJ5Xr1ujMkVg== Received: from S-MS-EXCH01.sberdevices.ru (S-MS-EXCH01.sberdevices.ru [172.16.1.4]) by mx.sberdevices.ru (Postfix) with ESMTP; Fri, 2 Dec 2022 01:57:34 +0300 (MSK) From: Dmitry Rokosov To: , , , , , , , CC: , , , , , , , , Dmitry Rokosov Subject: [PATCH v8 07/11] clk: meson: a1: redesign Amlogic A1 PLL clock controller Date: Fri, 2 Dec 2022 01:56:59 +0300 Message-ID: <20221201225703.6507-8-ddrokosov@sberdevices.ru> X-Mailer: git-send-email 2.36.0 In-Reply-To: <20221201225703.6507-1-ddrokosov@sberdevices.ru> References: <20221201225703.6507-1-ddrokosov@sberdevices.ru> MIME-Version: 1.0 X-Originating-IP: [172.16.1.6] X-ClientProxiedBy: S-MS-EXCH02.sberdevices.ru (172.16.1.5) To S-MS-EXCH01.sberdevices.ru (172.16.1.4) X-KSMG-Rule-ID: 4 X-KSMG-Message-Action: clean X-KSMG-AntiSpam-Status: not scanned, disabled by settings X-KSMG-AntiSpam-Interceptor-Info: not scanned X-KSMG-AntiPhishing: not scanned, disabled by settings X-KSMG-AntiVirus: Kaspersky Secure Mail Gateway, version 1.1.2.30, bases: 2022/12/01 20:49:00 #20634374 X-KSMG-AntiVirus-Status: Clean, skipped X-Spam-Status: No, score=-2.1 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-getmail-retrieved-from-mailbox: =?utf-8?q?INBOX?= X-GMAIL-THRID: =?utf-8?q?1751054471820420496?= X-GMAIL-MSGID: =?utf-8?q?1751054471820420496?= Summary changes: - supported meson-a1-clkc common driver - inherited from the base clk-pll driver, implemented own version of init/enable/disable/enabled routines; rate calculating logic is fully the same - aligned CLKID-related definitions with CLKID list from order perspective to remove holes and permutations - corrected Kconfig dependencies and types - provided correct MODULE_AUTHORs() and MODULE_LICENSE() - optimized and fix up some clock relationships - removed unused register offset definitions (ANACTRL_* group) Signed-off-by: Dmitry Rokosov --- drivers/clk/meson/Kconfig | 5 +- drivers/clk/meson/a1-pll.c | 267 +++++++++++++++++++++++++------------ drivers/clk/meson/a1-pll.h | 37 ++--- 3 files changed, 202 insertions(+), 107 deletions(-) diff --git a/drivers/clk/meson/Kconfig b/drivers/clk/meson/Kconfig index 1c885541c3a9..deb273673ec1 100644 --- a/drivers/clk/meson/Kconfig +++ b/drivers/clk/meson/Kconfig @@ -104,10 +104,11 @@ config COMMON_CLK_AXG_AUDIO aka axg, Say Y if you want audio subsystem to work. config COMMON_CLK_A1_PLL - bool - depends on ARCH_MESON + tristate "Meson A1 SoC PLL controller support" + depends on ARM64 select COMMON_CLK_MESON_REGMAP select COMMON_CLK_MESON_PLL + select COMMON_CLK_MESON_A1_CLKC help Support for the PLL clock controller on Amlogic A113L device, aka a1. Say Y if you want PLL to work. diff --git a/drivers/clk/meson/a1-pll.c b/drivers/clk/meson/a1-pll.c index 69c1ca07d041..23487ca797b3 100644 --- a/drivers/clk/meson/a1-pll.c +++ b/drivers/clk/meson/a1-pll.c @@ -2,15 +2,133 @@ /* * Copyright (c) 2019 Amlogic, Inc. All rights reserved. * Author: Jian Hu + * + * Copyright (c) 2022, SberDevices. All Rights Reserved. + * Author: Dmitry Rokosov */ #include #include #include +#include "meson-a1-clkc.h" #include "a1-pll.h" -#include "clk-pll.h" #include "clk-regmap.h" +static inline +struct meson_a1_pll_data *meson_a1_pll_data(struct clk_regmap *clk) +{ + return (struct meson_a1_pll_data *)clk->data; +} + +static int meson_a1_pll_init(struct clk_hw *hw) +{ + struct clk_regmap *clk = to_clk_regmap(hw); + struct meson_a1_pll_data *pll = meson_a1_pll_data(clk); + + regmap_multi_reg_write(clk->map, pll->base.init_regs, + pll->base.init_count); + + return 0; +} + +static int meson_a1_pll_is_enabled(struct clk_hw *hw) +{ + struct clk_regmap *clk = to_clk_regmap(hw); + struct meson_a1_pll_data *pll = meson_a1_pll_data(clk); + + if (MESON_PARM_APPLICABLE(&pll->base.rst) && + meson_parm_read(clk->map, &pll->base.rst)) + return 0; + + if (!meson_parm_read(clk->map, &pll->base.en) || + !meson_parm_read(clk->map, &pll->base.l)) + return 0; + + return 1; +} + +static int meson_a1_pll_enable(struct clk_hw *hw) +{ + struct clk_regmap *clk = to_clk_regmap(hw); + struct meson_a1_pll_data *pll = meson_a1_pll_data(clk); + + /* Do nothing if the PLL is already enabled */ + if (clk_hw_is_enabled(hw)) + return 0; + + /* Enable the pll */ + meson_parm_write(clk->map, &pll->base.en, 1); + + /* + * Compared with the previous SoCs, self-adaption current module + * is newly added for A1, keep the new power-on sequence to enable the + * PLL. The sequence is: + * 1. enable the pll, delay for 10us + * 2. enable the pll self-adaption current module, delay for 40us + * 3. enable the lock detect module + */ + usleep_range(10, 20); + meson_parm_write(clk->map, &pll->current_en, 1); + usleep_range(40, 50); + + meson_parm_write(clk->map, &pll->l_detect, 1); + meson_parm_write(clk->map, &pll->l_detect, 0); + + if (meson_clk_pll_wait_lock(hw)) + return -EIO; + + return 0; +} + +static void meson_a1_pll_disable(struct clk_hw *hw) +{ + struct clk_regmap *clk = to_clk_regmap(hw); + struct meson_a1_pll_data *pll = meson_a1_pll_data(clk); + + /* Disable the pll */ + meson_parm_write(clk->map, &pll->base.en, 0); + + /* Disable PLL internal self-adaption current module */ + meson_parm_write(clk->map, &pll->current_en, 0); +} + +/* + * A1 PLL clock controller driver is based on meson clk_pll driver, + * so some rate calculating routines are reused + */ +static unsigned long meson_a1_pll_recalc_rate(struct clk_hw *hw, + unsigned long parent_rate) +{ + return meson_clk_pll_ops.recalc_rate(hw, parent_rate); +} + +static int meson_a1_pll_determine_rate(struct clk_hw *hw, + struct clk_rate_request *req) +{ + return meson_clk_pll_ops.determine_rate(hw, req); +} + +static int meson_a1_pll_set_rate(struct clk_hw *hw, unsigned long rate, + unsigned long parent_rate) +{ + return meson_clk_pll_ops.set_rate(hw, rate, parent_rate); +} + +static const struct clk_ops meson_a1_pll_ops = { + .init = meson_a1_pll_init, + .recalc_rate = meson_a1_pll_recalc_rate, + .determine_rate = meson_a1_pll_determine_rate, + .set_rate = meson_a1_pll_set_rate, + .is_enabled = meson_a1_pll_is_enabled, + .enable = meson_a1_pll_enable, + .disable = meson_a1_pll_disable +}; + +static const struct clk_ops meson_a1_pll_ro_ops = { + .recalc_rate = meson_a1_pll_recalc_rate, + .is_enabled = meson_a1_pll_is_enabled, +}; + static struct clk_regmap a1_fixed_pll_dco = { .data = &(struct meson_clk_pll_data){ .en = { @@ -46,7 +164,7 @@ static struct clk_regmap a1_fixed_pll_dco = { }, .hw.init = &(struct clk_init_data){ .name = "fixed_pll_dco", - .ops = &meson_clk_pll_ro_ops, + .ops = &meson_a1_pll_ro_ops, .parent_data = &(const struct clk_parent_data) { .fw_name = "xtal_fixpll", }, @@ -87,31 +205,36 @@ static const struct reg_sequence a1_hifi_init_regs[] = { }; static struct clk_regmap a1_hifi_pll = { - .data = &(struct meson_clk_pll_data){ - .en = { - .reg_off = ANACTRL_HIFIPLL_CTRL0, - .shift = 28, - .width = 1, - }, - .m = { - .reg_off = ANACTRL_HIFIPLL_CTRL0, - .shift = 0, - .width = 8, - }, - .n = { - .reg_off = ANACTRL_HIFIPLL_CTRL0, - .shift = 10, - .width = 5, - }, - .frac = { - .reg_off = ANACTRL_HIFIPLL_CTRL1, - .shift = 0, - .width = 19, - }, - .l = { - .reg_off = ANACTRL_HIFIPLL_STS, - .shift = 31, - .width = 1, + .data = &(struct meson_a1_pll_data){ + .base = { + .en = { + .reg_off = ANACTRL_HIFIPLL_CTRL0, + .shift = 28, + .width = 1, + }, + .m = { + .reg_off = ANACTRL_HIFIPLL_CTRL0, + .shift = 0, + .width = 8, + }, + .n = { + .reg_off = ANACTRL_HIFIPLL_CTRL0, + .shift = 10, + .width = 5, + }, + .frac = { + .reg_off = ANACTRL_HIFIPLL_CTRL1, + .shift = 0, + .width = 19, + }, + .l = { + .reg_off = ANACTRL_HIFIPLL_STS, + .shift = 31, + .width = 1, + }, + .range = &a1_hifi_pll_mult_range, + .init_regs = a1_hifi_init_regs, + .init_count = ARRAY_SIZE(a1_hifi_init_regs), }, .current_en = { .reg_off = ANACTRL_HIFIPLL_CTRL0, @@ -123,13 +246,10 @@ static struct clk_regmap a1_hifi_pll = { .shift = 6, .width = 1, }, - .range = &a1_hifi_pll_mult_range, - .init_regs = a1_hifi_init_regs, - .init_count = ARRAY_SIZE(a1_hifi_init_regs), }, .hw.init = &(struct clk_init_data){ .name = "hifi_pll", - .ops = &meson_clk_pll_ops, + .ops = &meson_a1_pll_ops, .parent_data = &(const struct clk_parent_data) { .fw_name = "xtal_hifipll", }, @@ -276,15 +396,15 @@ static struct clk_hw_onecell_data a1_pll_hw_onecell_data = { .hws = { [CLKID_FIXED_PLL_DCO] = &a1_fixed_pll_dco.hw, [CLKID_FIXED_PLL] = &a1_fixed_pll.hw, - [CLKID_HIFI_PLL] = &a1_hifi_pll.hw, - [CLKID_FCLK_DIV2] = &a1_fclk_div2.hw, - [CLKID_FCLK_DIV3] = &a1_fclk_div3.hw, - [CLKID_FCLK_DIV5] = &a1_fclk_div5.hw, - [CLKID_FCLK_DIV7] = &a1_fclk_div7.hw, [CLKID_FCLK_DIV2_DIV] = &a1_fclk_div2_div.hw, [CLKID_FCLK_DIV3_DIV] = &a1_fclk_div3_div.hw, [CLKID_FCLK_DIV5_DIV] = &a1_fclk_div5_div.hw, [CLKID_FCLK_DIV7_DIV] = &a1_fclk_div7_div.hw, + [CLKID_FCLK_DIV2] = &a1_fclk_div2.hw, + [CLKID_FCLK_DIV3] = &a1_fclk_div3.hw, + [CLKID_FCLK_DIV5] = &a1_fclk_div5.hw, + [CLKID_FCLK_DIV7] = &a1_fclk_div7.hw, + [CLKID_HIFI_PLL] = &a1_hifi_pll.hw, [NR_PLL_CLKS] = NULL, }, .num = NR_PLL_CLKS, @@ -293,68 +413,39 @@ static struct clk_hw_onecell_data a1_pll_hw_onecell_data = { static struct clk_regmap *const a1_pll_regmaps[] = { &a1_fixed_pll_dco, &a1_fixed_pll, - &a1_hifi_pll, &a1_fclk_div2, &a1_fclk_div3, &a1_fclk_div5, &a1_fclk_div7, + &a1_hifi_pll, }; -static struct regmap_config clkc_regmap_config = { - .reg_bits = 32, - .val_bits = 32, - .reg_stride = 4, +static const struct meson_a1_clkc_data a1_pll_clkc __maybe_unused = { + .hw = &a1_pll_hw_onecell_data, + .regs = a1_pll_regmaps, + .num_regs = ARRAY_SIZE(a1_pll_regmaps), }; -static int meson_a1_pll_probe(struct platform_device *pdev) -{ - struct device *dev = &pdev->dev; - struct resource *res; - void __iomem *base; - struct regmap *map; - int ret, i; - - res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - - base = devm_ioremap_resource(dev, res); - if (IS_ERR(base)) - return PTR_ERR(base); - - map = devm_regmap_init_mmio(dev, base, &clkc_regmap_config); - if (IS_ERR(map)) - return PTR_ERR(map); - - /* Populate regmap for the regmap backed clocks */ - for (i = 0; i < ARRAY_SIZE(a1_pll_regmaps); i++) - a1_pll_regmaps[i]->map = map; - - for (i = 0; i < a1_pll_hw_onecell_data.num; i++) { - /* array might be sparse */ - if (!a1_pll_hw_onecell_data.hws[i]) - continue; - - ret = devm_clk_hw_register(dev, a1_pll_hw_onecell_data.hws[i]); - if (ret) { - dev_err(dev, "Clock registration failed\n"); - return ret; - } - } - - return devm_of_clk_add_hw_provider(dev, of_clk_hw_onecell_get, - &a1_pll_hw_onecell_data); -} - -static const struct of_device_id clkc_match_table[] = { - { .compatible = "amlogic,a1-pll-clkc", }, - {} +#ifdef CONFIG_OF +static const struct of_device_id a1_pll_clkc_match_table[] = { + { + .compatible = "amlogic,a1-pll-clkc", + .data = &a1_pll_clkc, + }, + {}, }; +MODULE_DEVICE_TABLE(of, a1_pll_clkc_match_table); +#endif /* CONFIG_OF */ -static struct platform_driver a1_pll_driver = { - .probe = meson_a1_pll_probe, - .driver = { - .name = "a1-pll-clkc", - .of_match_table = clkc_match_table, +static struct platform_driver a1_pll_clkc_driver = { + .probe = meson_a1_clkc_probe, + .driver = { + .name = "a1-pll-clkc", + .of_match_table = of_match_ptr(a1_pll_clkc_match_table), }, }; -builtin_platform_driver(a1_pll_driver); +module_platform_driver(a1_pll_clkc_driver); +MODULE_AUTHOR("Jian Hu "); +MODULE_AUTHOR("Dmitry Rokosov "); +MODULE_LICENSE("GPL"); diff --git a/drivers/clk/meson/a1-pll.h b/drivers/clk/meson/a1-pll.h index 8ded267061ad..2ff5a2042a97 100644 --- a/drivers/clk/meson/a1-pll.h +++ b/drivers/clk/meson/a1-pll.h @@ -1,38 +1,29 @@ /* SPDX-License-Identifier: (GPL-2.0+ OR MIT) */ /* + * Amlogic Meson-A1 PLL Clock Controller internals + * * Copyright (c) 2019 Amlogic, Inc. All rights reserved. + * Author: Jian Hu + * + * Copyright (c) 2022, SberDevices. All Rights Reserved. + * Author: Dmitry Rokosov */ #ifndef __A1_PLL_H #define __A1_PLL_H +#include "clk-pll.h" + /* PLL register offset */ #define ANACTRL_FIXPLL_CTRL0 0x0 #define ANACTRL_FIXPLL_CTRL1 0x4 -#define ANACTRL_FIXPLL_CTRL2 0x8 -#define ANACTRL_FIXPLL_CTRL3 0xc -#define ANACTRL_FIXPLL_CTRL4 0x10 #define ANACTRL_FIXPLL_STS 0x14 -#define ANACTRL_SYSPLL_CTRL0 0x80 -#define ANACTRL_SYSPLL_CTRL1 0x84 -#define ANACTRL_SYSPLL_CTRL2 0x88 -#define ANACTRL_SYSPLL_CTRL3 0x8c -#define ANACTRL_SYSPLL_CTRL4 0x90 -#define ANACTRL_SYSPLL_STS 0x94 #define ANACTRL_HIFIPLL_CTRL0 0xc0 #define ANACTRL_HIFIPLL_CTRL1 0xc4 #define ANACTRL_HIFIPLL_CTRL2 0xc8 #define ANACTRL_HIFIPLL_CTRL3 0xcc #define ANACTRL_HIFIPLL_CTRL4 0xd0 #define ANACTRL_HIFIPLL_STS 0xd4 -#define ANACTRL_AUDDDS_CTRL0 0x100 -#define ANACTRL_AUDDDS_CTRL1 0x104 -#define ANACTRL_AUDDDS_CTRL2 0x108 -#define ANACTRL_AUDDDS_CTRL3 0x10c -#define ANACTRL_AUDDDS_CTRL4 0x110 -#define ANACTRL_AUDDDS_STS 0x114 -#define ANACTRL_MISCTOP_CTRL0 0x140 -#define ANACTRL_POR_CNTL 0x188 /* * CLKID index values @@ -53,4 +44,16 @@ /* include the CLKIDs that have been made part of the DT binding */ #include +/** + * struct meson_a1_pll_data - A1 PLL state + * @base: Basic CLK PLL state + * @current_en: Enable or disable the PLL self-adaption current module + * @l_detect: Enable or disable the lock detect module + */ +struct meson_a1_pll_data { + struct meson_clk_pll_data base; + struct parm current_en; + struct parm l_detect; +}; + #endif /* __A1_PLL_H */