From patchwork Mon Aug 14 10:16:01 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Xingyu Wu X-Patchwork-Id: 135356 Return-Path: Delivered-To: ouuuleilei@gmail.com Received: by 2002:a59:b824:0:b0:3f2:4152:657d with SMTP id z4csp2688120vqi; Mon, 14 Aug 2023 04:53:03 -0700 (PDT) X-Google-Smtp-Source: AGHT+IG+hdp9b7Tk80ex1pnSx3EFw9UZnFLsMO5xWsg8Mvx6ISYDUYanITSP6+1QqamRUF7U/UiY X-Received: by 2002:a17:907:b0b:b0:987:47b3:6e34 with SMTP id h11-20020a1709070b0b00b0098747b36e34mr6904502ejl.67.1692013982544; Mon, 14 Aug 2023 04:53:02 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1692013982; cv=none; d=google.com; s=arc-20160816; b=unOlPGbnG2WGs+cPMGn7qUzvG6hB27dYFsf6crUTGOU0D0WVJxTqiSVR3RQRVilcJe sjErzWcHpI1p58Ssu3CZ3W6ebe7CM+D70cdJ4mz9W5WSo7269g4yfX36QNrmbBizvKGR k04x0tKHnrj3FjdexQhY2B7GgKEagtqRm1OI5dMP6BH+JCOr4ZuJdq8zF0bt6ebEfzGW DralTEl19jg/OOzpGk93eJexy01THl3bL19hIKQqyYk8ASQgoRD38EJ473WW2MHVKDL9 LtZf7XYKHKhNN23+OTStzwGzR2OHrKLijuM7+5c0ojAFPUscKOM1VkPlgygYqWD+mWrc zBhg== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:content-transfer-encoding:mime-version :references:in-reply-to:message-id:date:subject:cc:to:from; bh=vNmpNAVj9Eje1F42IE0e85PayPa1YskFbQ8fI10DX/Y=; fh=7Xnm9Z0nUSA40NYdx1QmwG6X9BDZo4g7q932jkK4sso=; b=iSqCqueudCaF7XJS+9DgT5OYTsFTSd+pSTRmT02yJDJw+iE8aatBok2BbP1sBshB/x +diSAo1NeGGRyCte1wFVeio8arowKPw+qPdWSPxDxg4TYVN/1E9agq0ggGcRKicW1pci UxyMRVK5gnW9+XPj6Xzr784+TWnL7Ls9nE2fclHmO5Zf62d816YVDe9eyPROd67oVbTC LQqob9mtXL6aNivzQu4W4fvLKeZJllV6BPc2MpHQKxHqFeUsN0DSmLO0NFoIVXvKQEbV HuYDzJJmz/1bHkiePsYQlyojUkT+YFE3NbdMrFJ2HTOWWCs4XHjljJR1iCu+Mr7Kr1LZ vY+Q== ARC-Authentication-Results: i=1; mx.google.com; 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 Received: from out1.vger.email (out1.vger.email. [2620:137:e000::1:20]) by mx.google.com with ESMTP id e9-20020a170906080900b0098debb6fa67si7337049ejd.495.2023.08.14.04.52.38; Mon, 14 Aug 2023 04:53:02 -0700 (PDT) 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; 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 Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236798AbjHNKQ4 convert rfc822-to-8bit (ORCPT + 99 others); Mon, 14 Aug 2023 06:16:56 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:38800 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236795AbjHNKQV (ORCPT ); Mon, 14 Aug 2023 06:16:21 -0400 Received: from fd01.gateway.ufhost.com (fd01.gateway.ufhost.com [61.152.239.71]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id DD79E10EA; Mon, 14 Aug 2023 03:16:06 -0700 (PDT) Received: from EXMBX166.cuchost.com (unknown [175.102.18.54]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client CN "EXMBX166", Issuer "EXMBX166" (not verified)) by fd01.gateway.ufhost.com (Postfix) with ESMTP id 697A282A9; Mon, 14 Aug 2023 18:16:05 +0800 (CST) Received: from EXMBX061.cuchost.com (172.16.6.61) by EXMBX166.cuchost.com (172.16.6.76) with Microsoft SMTP Server (TLS) id 15.0.1497.42; Mon, 14 Aug 2023 18:16:05 +0800 Received: from localhost.localdomain (183.27.98.20) by EXMBX061.cuchost.com (172.16.6.61) with Microsoft SMTP Server (TLS) id 15.0.1497.42; Mon, 14 Aug 2023 18:16:04 +0800 From: Xingyu Wu To: Daniel Lezcano , Thomas Gleixner , Emil Renner Berthing CC: , , "Rob Herring" , Krzysztof Kozlowski , Paul Walmsley , Palmer Dabbelt , Albert Ou , Philipp Zabel , Xingyu Wu , Samin Guo , , Conor Dooley Subject: [PATCH v4 1/3] dt-bindings: timer: Add timer for StarFive JH7110 SoC Date: Mon, 14 Aug 2023 18:16:01 +0800 Message-ID: <20230814101603.166951-2-xingyu.wu@starfivetech.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20230814101603.166951-1-xingyu.wu@starfivetech.com> References: <20230814101603.166951-1-xingyu.wu@starfivetech.com> MIME-Version: 1.0 X-Originating-IP: [183.27.98.20] X-ClientProxiedBy: EXCAS062.cuchost.com (172.16.6.22) To EXMBX061.cuchost.com (172.16.6.61) X-YovoleRuleAgent: yovoleflag X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_BLOCKED,SPF_HELO_PASS,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: INBOX X-GMAIL-THRID: 1774205253660681771 X-GMAIL-MSGID: 1774205253660681771 Add bindings for the timer on the JH7110 RISC-V SoC by StarFive Technology Ltd. Reviewed-by: Krzysztof Kozlowski Signed-off-by: Xingyu Wu --- .../bindings/timer/starfive,jh7110-timer.yaml | 96 +++++++++++++++++++ 1 file changed, 96 insertions(+) create mode 100644 Documentation/devicetree/bindings/timer/starfive,jh7110-timer.yaml diff --git a/Documentation/devicetree/bindings/timer/starfive,jh7110-timer.yaml b/Documentation/devicetree/bindings/timer/starfive,jh7110-timer.yaml new file mode 100644 index 000000000000..9a2dac11eb06 --- /dev/null +++ b/Documentation/devicetree/bindings/timer/starfive,jh7110-timer.yaml @@ -0,0 +1,96 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/timer/starfive,jh7110-timer.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: StarFive JH7110 Timer + +maintainers: + - Xingyu Wu + - Samin Guo + +description: + This timer has four free-running 32 bit counters in StarFive JH7110 SoC. + And each channel(counter) triggers an interrupt when timeout. They support + one-shot mode and continuous-run mode. + +properties: + compatible: + const: starfive,jh7110-timer + + reg: + maxItems: 1 + + interrupts: + items: + - description: channel 0 + - description: channel 1 + - description: channel 2 + - description: channel 3 + + clocks: + items: + - description: timer APB + - description: channel 0 + - description: channel 1 + - description: channel 2 + - description: channel 3 + + clock-names: + items: + - const: apb + - const: ch0 + - const: ch1 + - const: ch2 + - const: ch3 + + resets: + items: + - description: timer APB + - description: channel 0 + - description: channel 1 + - description: channel 2 + - description: channel 3 + + reset-names: + items: + - const: apb + - const: ch0 + - const: ch1 + - const: ch2 + - const: ch3 + +required: + - compatible + - reg + - interrupts + - clocks + - clock-names + - resets + - reset-names + +additionalProperties: false + +examples: + - | + timer@13050000 { + compatible = "starfive,jh7110-timer"; + reg = <0x13050000 0x10000>; + interrupts = <69>, <70>, <71> ,<72>; + clocks = <&clk 124>, + <&clk 125>, + <&clk 126>, + <&clk 127>, + <&clk 128>; + clock-names = "apb", "ch0", "ch1", + "ch2", "ch3"; + resets = <&rst 117>, + <&rst 118>, + <&rst 119>, + <&rst 120>, + <&rst 121>; + reset-names = "apb", "ch0", "ch1", + "ch2", "ch3"; + }; + From patchwork Mon Aug 14 10:16:02 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Xingyu Wu X-Patchwork-Id: 135325 Return-Path: Delivered-To: ouuuleilei@gmail.com Received: by 2002:a59:b824:0:b0:3f2:4152:657d with SMTP id z4csp2651916vqi; Mon, 14 Aug 2023 03:38:54 -0700 (PDT) X-Google-Smtp-Source: AGHT+IHnbGMJoTNuf8YtjxOmmBOvo6Fm6WRnUDve9s+csULFM75crmP/jQjBOjQit7BDqHrf1wEM X-Received: by 2002:a05:6a20:9497:b0:140:f855:5cde with SMTP id hs23-20020a056a20949700b00140f8555cdemr7132494pzb.33.1692009533915; Mon, 14 Aug 2023 03:38:53 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1692009533; cv=none; d=google.com; s=arc-20160816; b=VbEZG0mPO63XG+32af1V1I6kn78C8BZGeDNVBKUsZNQ/BMF778xwuul7GhmSWPNarP clI+JEQKdiPfitCU5oi54n0lu7Pyca0rJ9Et6qVl45IDdFUSOI5xBGvGlhQyuK/QayQJ 4WsVfRk90gTNKsdJd9mSjjRXTiV8cnwu/Hfcm7llS1G09vYPMetS0TI0Nokc/19UOZUV y+ISOTNvM85dpRxu7poh5ko+FyRQRn6uwqEsY9z+GBancl4Sqc2XpDu+8Z9BkCoTv+B5 eK9sE7zj6nJKCt/Ay8/tZd++BZndD0l/sCGxn5NXaGYg9AuHGaIXIjEJjqmapr+c2AHV 4uEQ== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:content-transfer-encoding:mime-version :references:in-reply-to:message-id:date:subject:cc:to:from; bh=6eYNqtHFWbrSW1R+zi6El9d4QKC92lr0V7Lt6iVdXGY=; fh=7Xnm9Z0nUSA40NYdx1QmwG6X9BDZo4g7q932jkK4sso=; b=c+3EaoPEfazM/NyLkDOPYxJVhtRMicZ9h0ALNeDfJHa7v81ZNdNiEIggWg38qh3EQE lepL7R870Opt0lx4rsdGdBTMA4oGigKQhGH8Ys1pppd0H/BhpusSfGiLubTeJrKT0glj /qhkDSHRpG9mYIaQUrsbx8y8pujKaOwiAq2N+qn12Uyr9njLiqIacl5wB4fVzZSNvRyu 8lhl+N1tszilI99Qy0640bpbvwuRcpJjFB6qA7KzcK/nmey0BdnmzFZtwAJWPIxas6hr aDms+E5ZdaqHea53AEJ7Fgn6qg1azL66x9htnIhBi+FG3aGvmsvKtcOswslpsDHD03TH 1N7w== ARC-Authentication-Results: i=1; mx.google.com; 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 Received: from out1.vger.email (out1.vger.email. [2620:137:e000::1:20]) by mx.google.com with ESMTP id r20-20020a6560d4000000b0056569f5da0asi6462083pgv.163.2023.08.14.03.38.41; Mon, 14 Aug 2023 03:38:53 -0700 (PDT) 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; 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 Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236758AbjHNKQx convert rfc822-to-8bit (ORCPT + 99 others); Mon, 14 Aug 2023 06:16:53 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:38898 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236855AbjHNKQW (ORCPT ); Mon, 14 Aug 2023 06:16:22 -0400 Received: from ex01.ufhost.com (ex01.ufhost.com [61.152.239.75]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 946EC1723; Mon, 14 Aug 2023 03:16:08 -0700 (PDT) Received: from EXMBX165.cuchost.com (unknown [175.102.18.54]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client CN "EXMBX165", Issuer "EXMBX165" (not verified)) by ex01.ufhost.com (Postfix) with ESMTP id 2865F24E18D; Mon, 14 Aug 2023 18:16:06 +0800 (CST) Received: from EXMBX061.cuchost.com (172.16.6.61) by EXMBX165.cuchost.com (172.16.6.75) with Microsoft SMTP Server (TLS) id 15.0.1497.42; Mon, 14 Aug 2023 18:16:06 +0800 Received: from localhost.localdomain (183.27.98.20) by EXMBX061.cuchost.com (172.16.6.61) with Microsoft SMTP Server (TLS) id 15.0.1497.42; Mon, 14 Aug 2023 18:16:05 +0800 From: Xingyu Wu To: Daniel Lezcano , Thomas Gleixner , Emil Renner Berthing CC: , , "Rob Herring" , Krzysztof Kozlowski , Paul Walmsley , Palmer Dabbelt , Albert Ou , Philipp Zabel , Xingyu Wu , Samin Guo , , Conor Dooley Subject: [PATCH v4 2/3] clocksource: Add JH7110 timer driver Date: Mon, 14 Aug 2023 18:16:02 +0800 Message-ID: <20230814101603.166951-3-xingyu.wu@starfivetech.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20230814101603.166951-1-xingyu.wu@starfivetech.com> References: <20230814101603.166951-1-xingyu.wu@starfivetech.com> MIME-Version: 1.0 X-Originating-IP: [183.27.98.20] X-ClientProxiedBy: EXCAS062.cuchost.com (172.16.6.22) To EXMBX061.cuchost.com (172.16.6.61) X-YovoleRuleAgent: yovoleflag X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_BLOCKED,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: INBOX X-GMAIL-THRID: 1774200588896152645 X-GMAIL-MSGID: 1774200588896152645 Add timer driver for the StarFive JH7110 SoC. Signed-off-by: Xingyu Wu --- MAINTAINERS | 7 + drivers/clocksource/Kconfig | 11 + drivers/clocksource/Makefile | 1 + drivers/clocksource/timer-jh7110.c | 415 +++++++++++++++++++++++++++++ 4 files changed, 434 insertions(+) create mode 100644 drivers/clocksource/timer-jh7110.c diff --git a/MAINTAINERS b/MAINTAINERS index 0903d87b17cb..00cf6a22e13c 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -20287,6 +20287,13 @@ S: Maintained F: Documentation/devicetree/bindings/sound/starfive,jh7110-tdm.yaml F: sound/soc/starfive/jh7110_tdm.c +STARFIVE JH7110 TIMER DRIVER +M: Samin Guo +M: Xingyu Wu +S: Supported +F: Documentation/devicetree/bindings/timer/starfive,jh7110-timer.yaml +F: drivers/clocksource/timer-jh7110.c + STARFIVE JH71X0 CLOCK DRIVERS M: Emil Renner Berthing M: Hal Feng diff --git a/drivers/clocksource/Kconfig b/drivers/clocksource/Kconfig index c4d671a5a13d..171b9b54a499 100644 --- a/drivers/clocksource/Kconfig +++ b/drivers/clocksource/Kconfig @@ -648,6 +648,17 @@ config RISCV_TIMER is accessed via both the SBI and the rdcycle instruction. This is required for all RISC-V systems. +config STARFIVE_JH7110_TIMER + bool "Timer for the STARFIVE JH7110 SoC" + depends on ARCH_STARFIVE || COMPILE_TEST + select TIMER_OF + select CLKSRC_MMIO + default ARCH_STARFIVE + help + This enables the timer for StarFive JH7110 SoCs. On RISC-V platform, + the system has started RISCV_TIMER. But you can also use this timer + which can provides four channels to do a lot more on JH7110 SoC. + config CLINT_TIMER bool "CLINT Timer for the RISC-V platform" if COMPILE_TEST depends on GENERIC_SCHED_CLOCK && RISCV diff --git a/drivers/clocksource/Makefile b/drivers/clocksource/Makefile index 5d93c9e3fc55..56bd6d9ddd87 100644 --- a/drivers/clocksource/Makefile +++ b/drivers/clocksource/Makefile @@ -81,6 +81,7 @@ obj-$(CONFIG_INGENIC_TIMER) += ingenic-timer.o obj-$(CONFIG_CLKSRC_ST_LPC) += clksrc_st_lpc.o obj-$(CONFIG_X86_NUMACHIP) += numachip.o obj-$(CONFIG_RISCV_TIMER) += timer-riscv.o +obj-$(CONFIG_STARFIVE_JH7110_TIMER) += timer-jh7110.o obj-$(CONFIG_CLINT_TIMER) += timer-clint.o obj-$(CONFIG_CSKY_MP_TIMER) += timer-mp-csky.o obj-$(CONFIG_GX6605S_TIMER) += timer-gx6605s.o diff --git a/drivers/clocksource/timer-jh7110.c b/drivers/clocksource/timer-jh7110.c new file mode 100644 index 000000000000..fe3cfed55df7 --- /dev/null +++ b/drivers/clocksource/timer-jh7110.c @@ -0,0 +1,415 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Starfive JH7110 Timer driver + * + * Copyright (C) 2022-2023 StarFive Technology Co., Ltd. + * + * Author: + * Xingyu Wu + * Samin Guo + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +/* Bias: Ch0-0x0, Ch1-0x40, Ch2-0x80, and so on. */ +#define JH7110_TIMER_CH_LEN 0x40 +#define JH7110_TIMER_CH_BASE(x) ((x) * JH7110_TIMER_CH_LEN) +#define JH7110_TIMER_CH_MAX 4 + +#define JH7110_CLOCK_SOURCE_RATING 200 +#define JH7110_VALID_BITS 32 +#define JH7110_DELAY_US 0 +#define JH7110_TIMEOUT_US 10000 +#define JH7110_CLOCKEVENT_RATING 300 +#define JH7110_TIMER_MAX_TICKS 0xffffffff +#define JH7110_TIMER_MIN_TICKS 0xf +#define JH7110_TIMER_NAME_NUM 20 + +#define JH7110_TIMER_INT_STATUS 0x00 /* RO[0:4]: Interrupt Status for channel0~4 */ +#define JH7110_TIMER_CTL 0x04 /* RW[0]: 0-continuous run, 1-single run */ +#define JH7110_TIMER_LOAD 0x08 /* RW: load value to counter */ +#define JH7110_TIMER_ENABLE 0x10 /* RW[0]: timer enable register */ +#define JH7110_TIMER_RELOAD 0x14 /* RW: write 1 or 0 both reload counter */ +#define JH7110_TIMER_VALUE 0x18 /* RO: timer value register */ +#define JH7110_TIMER_INT_CLR 0x20 /* RW: timer interrupt clear register */ +#define JH7110_TIMER_INT_MASK 0x24 /* RW[0]: timer interrupt mask register */ +#define JH7110_TIMER_INT_CLR_AVA_MASK BIT(1) + +enum JH7110_TIMER_INTMASK { + JH7110_TIMER_INTMASK_DIS = 0, + JH7110_TIMER_INTMASK_ENA = 1 +}; + +enum JH7110_TIMER_MOD { + JH7110_TIMER_MOD_CONTIN = 0, + JH7110_TIMER_MOD_SINGLE = 1 +}; + +enum JH7110_TIMER_CTL_EN { + JH7110_TIMER_DIS = 0, + JH7110_TIMER_ENA = 1 +}; + +struct jh7110_clkevt { + struct clock_event_device evt; + struct clocksource cs; + struct clk *clk; + char name[JH7110_TIMER_NAME_NUM]; + int irq; + u32 periodic; + u32 rate; + u32 reload_val; + void __iomem *base; +}; + +struct jh7110_timer_priv { + struct device *dev; + void __iomem *base; + struct jh7110_clkevt clkevt[JH7110_TIMER_CH_MAX]; +}; + +static inline struct jh7110_clkevt *to_jh7110_clkevt(struct clock_event_device *evt) +{ + return container_of(evt, struct jh7110_clkevt, evt); +} + +/* 0:continuous-run mode, 1:single-run mode */ +static inline void jh7110_timer_set_continuous_mod(struct jh7110_clkevt *clkevt) +{ + writel(JH7110_TIMER_MOD_CONTIN, clkevt->base + JH7110_TIMER_CTL); +} + +static inline void jh7110_timer_set_single_mod(struct jh7110_clkevt *clkevt) +{ + writel(JH7110_TIMER_MOD_SINGLE, clkevt->base + JH7110_TIMER_CTL); +} + +/* Interrupt Mask Register, 0:Unmask, 1:Mask */ +static inline void jh7110_timer_int_enable(struct jh7110_clkevt *clkevt) +{ + writel(JH7110_TIMER_INTMASK_DIS, clkevt->base + JH7110_TIMER_INT_MASK); +} + +static inline void jh7110_timer_int_disable(struct jh7110_clkevt *clkevt) +{ + writel(JH7110_TIMER_INTMASK_ENA, clkevt->base + JH7110_TIMER_INT_MASK); +} + +/* + * BIT(0): Read value represent channel intr status. + * Write 1 to this bit to clear interrupt. Write 0 has no effects. + * BIT(1): "1" means that it is clearing interrupt. BIT(0) can not be written. + */ +static inline int jh7110_timer_int_clear(struct jh7110_clkevt *clkevt) +{ + u32 value; + int ret; + + /* waiting interrupt can be to clearing */ + ret = readl_poll_timeout_atomic(clkevt->base + JH7110_TIMER_INT_CLR, value, + !(value & JH7110_TIMER_INT_CLR_AVA_MASK), + JH7110_DELAY_US, JH7110_TIMEOUT_US); + if (!ret) + writel(0x1, clkevt->base + JH7110_TIMER_INT_CLR); + + return ret; +} + +/* + * The initial value to be loaded into the + * counter and is also used as the reload value. + * val = clock rate --> 1s + */ +static inline void jh7110_timer_set_load(struct jh7110_clkevt *clkevt, u32 val) +{ + writel(val, clkevt->base + JH7110_TIMER_LOAD); +} + +static inline u32 jh7110_timer_get_val(struct jh7110_clkevt *clkevt) +{ + return readl(clkevt->base + JH7110_TIMER_VALUE); +} + +/* + * Write RELOAD register to reload preset value to counter. + * Write 0 and write 1 are both ok. + */ +static inline void jh7110_timer_set_reload(struct jh7110_clkevt *clkevt) +{ + writel(0, clkevt->base + JH7110_TIMER_RELOAD); +} + +static inline void jh7110_timer_enable(struct jh7110_clkevt *clkevt) +{ + writel(JH7110_TIMER_ENA, clkevt->base + JH7110_TIMER_ENABLE); +} + +static inline void jh7110_timer_disable(struct jh7110_clkevt *clkevt) +{ + writel(JH7110_TIMER_DIS, clkevt->base + JH7110_TIMER_ENABLE); +} + +static int jh7110_timer_int_init_enable(struct jh7110_clkevt *clkevt) +{ + int ret; + + jh7110_timer_int_disable(clkevt); + ret = jh7110_timer_int_clear(clkevt); + if (ret) + return ret; + + jh7110_timer_int_enable(clkevt); + jh7110_timer_enable(clkevt); + + return 0; +} + +static int jh7110_timer_shutdown(struct clock_event_device *evt) +{ + struct jh7110_clkevt *clkevt = to_jh7110_clkevt(evt); + + jh7110_timer_disable(clkevt); + return jh7110_timer_int_clear(clkevt); +} + +static void jh7110_timer_suspend(struct clock_event_device *evt) +{ + struct jh7110_clkevt *clkevt = to_jh7110_clkevt(evt); + + clkevt->reload_val = jh7110_timer_get_val(clkevt); + jh7110_timer_shutdown(evt); +} + +static void jh7110_timer_resume(struct clock_event_device *evt) +{ + struct jh7110_clkevt *clkevt = to_jh7110_clkevt(evt); + + jh7110_timer_set_load(clkevt, clkevt->reload_val); + jh7110_timer_set_reload(clkevt); + jh7110_timer_int_enable(clkevt); + jh7110_timer_enable(clkevt); +} + +static int jh7110_timer_tick_resume(struct clock_event_device *evt) +{ + jh7110_timer_resume(evt); + + return 0; +} + +/* IRQ handler for the timer */ +static irqreturn_t jh7110_timer_interrupt(int irq, void *priv) +{ + struct clock_event_device *evt = (struct clock_event_device *)priv; + struct jh7110_clkevt *clkevt = to_jh7110_clkevt(evt); + + if (jh7110_timer_int_clear(clkevt)) + return IRQ_NONE; + + if (evt->event_handler) + evt->event_handler(evt); + + return IRQ_HANDLED; +} + +static int jh7110_timer_set_periodic(struct clock_event_device *evt) +{ + struct jh7110_clkevt *clkevt = to_jh7110_clkevt(evt); + + clkevt->periodic = DIV_ROUND_CLOSEST(clkevt->rate, HZ); + jh7110_timer_disable(clkevt); + jh7110_timer_set_continuous_mod(clkevt); + jh7110_timer_set_load(clkevt, clkevt->periodic); + + return jh7110_timer_int_init_enable(clkevt); +} + +static int jh7110_timer_set_oneshot(struct clock_event_device *evt) +{ + struct jh7110_clkevt *clkevt = to_jh7110_clkevt(evt); + + jh7110_timer_disable(clkevt); + jh7110_timer_set_single_mod(clkevt); + jh7110_timer_set_load(clkevt, JH7110_TIMER_MAX_TICKS); + + return jh7110_timer_int_init_enable(clkevt); +} + +static int jh7110_timer_set_next_event(unsigned long next, + struct clock_event_device *evt) +{ + struct jh7110_clkevt *clkevt = to_jh7110_clkevt(evt); + + jh7110_timer_disable(clkevt); + jh7110_timer_set_single_mod(clkevt); + jh7110_timer_set_load(clkevt, next); + jh7110_timer_enable(clkevt); + + return 0; +} + +static void jh7110_set_clockevent(struct clock_event_device *evt) +{ + evt->features = CLOCK_EVT_FEAT_PERIODIC | + CLOCK_EVT_FEAT_ONESHOT | + CLOCK_EVT_FEAT_DYNIRQ; + evt->set_state_shutdown = jh7110_timer_shutdown; + evt->set_state_periodic = jh7110_timer_set_periodic; + evt->set_state_oneshot = jh7110_timer_set_oneshot; + evt->set_state_oneshot_stopped = jh7110_timer_shutdown; + evt->tick_resume = jh7110_timer_tick_resume; + evt->set_next_event = jh7110_timer_set_next_event; + evt->suspend = jh7110_timer_suspend; + evt->resume = jh7110_timer_resume; + evt->rating = JH7110_CLOCKEVENT_RATING; +} + +static u64 jh7110_timer_clocksource_read(struct clocksource *cs) +{ + struct jh7110_clkevt *clkevt = container_of(cs, struct jh7110_clkevt, cs); + + return (u64)jh7110_timer_get_val(clkevt); +} + +static int jh7110_clocksource_init(struct jh7110_clkevt *clkevt) +{ + int ret; + + jh7110_timer_set_continuous_mod(clkevt); + jh7110_timer_set_load(clkevt, JH7110_TIMER_MAX_TICKS); + + ret = jh7110_timer_int_init_enable(clkevt); + if (ret) + return ret; + + clkevt->cs.name = clkevt->name; + clkevt->cs.rating = JH7110_CLOCK_SOURCE_RATING; + clkevt->cs.read = jh7110_timer_clocksource_read; + clkevt->cs.mask = CLOCKSOURCE_MASK(JH7110_VALID_BITS); + clkevt->cs.flags = CLOCK_SOURCE_IS_CONTINUOUS; + + return clocksource_register_hz(&clkevt->cs, clkevt->rate); +} + +static void jh7110_clockevents_register(struct jh7110_clkevt *clkevt) +{ + clkevt->rate = clk_get_rate(clkevt->clk); + + jh7110_set_clockevent(&clkevt->evt); + clkevt->evt.name = clkevt->name; + clkevt->evt.irq = clkevt->irq; + clkevt->evt.cpumask = cpu_possible_mask; + + clockevents_config_and_register(&clkevt->evt, clkevt->rate, + JH7110_TIMER_MIN_TICKS, JH7110_TIMER_MAX_TICKS); +} + +static int jh7110_timer_probe(struct platform_device *pdev) +{ + char name[JH7110_TIMER_NAME_NUM]; + struct jh7110_timer_priv *priv; + struct jh7110_clkevt *clkevt; + struct clk *pclk; + struct reset_control *rst; + int ch; + int ret; + + priv = devm_kzalloc(&pdev->dev, struct_size(priv, clkevt, JH7110_TIMER_CH_MAX), + GFP_KERNEL); + if (!priv) + return -ENOMEM; + + priv->base = devm_platform_ioremap_resource(pdev, 0); + if (IS_ERR(priv->base)) + return dev_err_probe(&pdev->dev, PTR_ERR(priv->base), + "failed to map registers\n"); + + rst = devm_reset_control_get_exclusive(&pdev->dev, "apb"); + if (IS_ERR(rst)) + return dev_err_probe(&pdev->dev, PTR_ERR(rst), "failed to get apb reset\n"); + + pclk = devm_clk_get_enabled(&pdev->dev, "apb"); + if (IS_ERR(pclk)) + return dev_err_probe(&pdev->dev, PTR_ERR(pclk), + "failed to get & enable apb clock\n"); + + ret = reset_control_deassert(rst); + if (ret) + return dev_err_probe(&pdev->dev, ret, "failed to deassert apb reset\n"); + + priv->dev = &pdev->dev; + platform_set_drvdata(pdev, priv); + + for (ch = 0; ch < JH7110_TIMER_CH_MAX; ch++) { + clkevt = &priv->clkevt[ch]; + snprintf(name, sizeof(name), "ch%d", ch); + + clkevt->base = priv->base + JH7110_TIMER_CH_BASE(ch); + /* Ensure timers are disabled */ + jh7110_timer_disable(clkevt); + + rst = devm_reset_control_get_exclusive(&pdev->dev, name); + if (IS_ERR(rst)) + return PTR_ERR(rst); + + clkevt->clk = devm_clk_get_enabled(&pdev->dev, name); + if (IS_ERR(clkevt->clk)) + return PTR_ERR(clkevt->clk); + + ret = reset_control_deassert(rst); + if (ret) + return ret; + + clkevt->irq = platform_get_irq(pdev, ch); + if (clkevt->irq < 0) + return clkevt->irq; + + snprintf(clkevt->name, sizeof(clkevt->name), "%s.ch%d", pdev->name, ch); + jh7110_clockevents_register(clkevt); + + ret = devm_request_irq(&pdev->dev, clkevt->irq, jh7110_timer_interrupt, + IRQF_TIMER | IRQF_IRQPOLL, + clkevt->name, &clkevt->evt); + if (ret) + return ret; + + ret = jh7110_clocksource_init(clkevt); + if (ret) + return ret; + } + + return 0; +} + +static const struct of_device_id jh7110_timer_match[] = { + { .compatible = "starfive,jh7110-timer", }, + { /* sentinel */ } +}; +MODULE_DEVICE_TABLE(of, jh7110_timer_match); + +static struct platform_driver jh7110_timer_driver = { + .probe = jh7110_timer_probe, + .driver = { + .name = "jh7110-timer", + .of_match_table = jh7110_timer_match, + }, +}; +module_platform_driver(jh7110_timer_driver); + +MODULE_AUTHOR("Xingyu Wu "); +MODULE_DESCRIPTION("StarFive JH7110 timer driver"); +MODULE_LICENSE("GPL"); From patchwork Mon Aug 14 10:16:03 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Xingyu Wu X-Patchwork-Id: 135336 Return-Path: Delivered-To: ouuuleilei@gmail.com Received: by 2002:a59:b824:0:b0:3f2:4152:657d with SMTP id z4csp2656641vqi; 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[2620:137:e000::1:20]) by mx.google.com with ESMTP id le11-20020a170902fb0b00b001bb053dc947si7797115plb.177.2023.08.14.03.49.54; Mon, 14 Aug 2023 03:50:08 -0700 (PDT) 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; 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 Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236776AbjHNKQz convert rfc822-to-8bit (ORCPT + 99 others); Mon, 14 Aug 2023 06:16:55 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:38834 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236819AbjHNKQV (ORCPT ); Mon, 14 Aug 2023 06:16:21 -0400 Received: from ex01.ufhost.com (ex01.ufhost.com [61.152.239.75]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 33126172E; Mon, 14 Aug 2023 03:16:13 -0700 (PDT) Received: from EXMBX166.cuchost.com (unknown [175.102.18.54]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client CN "EXMBX166", Issuer "EXMBX166" (not verified)) by ex01.ufhost.com (Postfix) with ESMTP id BCD7E24E1ED; Mon, 14 Aug 2023 18:16:06 +0800 (CST) Received: from EXMBX061.cuchost.com (172.16.6.61) by EXMBX166.cuchost.com (172.16.6.76) with Microsoft SMTP Server (TLS) id 15.0.1497.42; Mon, 14 Aug 2023 18:16:06 +0800 Received: from localhost.localdomain (183.27.98.20) by EXMBX061.cuchost.com (172.16.6.61) with Microsoft SMTP Server (TLS) id 15.0.1497.42; Mon, 14 Aug 2023 18:16:05 +0800 From: Xingyu Wu To: Daniel Lezcano , Thomas Gleixner , Emil Renner Berthing CC: , , "Rob Herring" , Krzysztof Kozlowski , Paul Walmsley , Palmer Dabbelt , Albert Ou , Philipp Zabel , Xingyu Wu , Samin Guo , , Conor Dooley Subject: [PATCH v4 3/3] riscv: dts: jh7110: starfive: Add timer node Date: Mon, 14 Aug 2023 18:16:03 +0800 Message-ID: <20230814101603.166951-4-xingyu.wu@starfivetech.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20230814101603.166951-1-xingyu.wu@starfivetech.com> References: <20230814101603.166951-1-xingyu.wu@starfivetech.com> MIME-Version: 1.0 X-Originating-IP: [183.27.98.20] X-ClientProxiedBy: EXCAS062.cuchost.com (172.16.6.22) To EXMBX061.cuchost.com (172.16.6.61) X-YovoleRuleAgent: yovoleflag X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_BLOCKED,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: INBOX X-GMAIL-THRID: 1774201295742252238 X-GMAIL-MSGID: 1774201295742252238 Add the timer node for the Starfive JH7110 SoC. Signed-off-by: Xingyu Wu Reviewed-by: Walker Chen --- arch/riscv/boot/dts/starfive/jh7110.dtsi | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) diff --git a/arch/riscv/boot/dts/starfive/jh7110.dtsi b/arch/riscv/boot/dts/starfive/jh7110.dtsi index ec2e70011a73..84bb9717be13 100644 --- a/arch/riscv/boot/dts/starfive/jh7110.dtsi +++ b/arch/riscv/boot/dts/starfive/jh7110.dtsi @@ -502,6 +502,26 @@ sysgpio: pinctrl@13040000 { #gpio-cells = <2>; }; + timer@13050000 { + compatible = "starfive,jh7110-timer"; + reg = <0x0 0x13050000 0x0 0x10000>; + interrupts = <69>, <70>, <71> ,<72>; + clocks = <&syscrg JH7110_SYSCLK_TIMER_APB>, + <&syscrg JH7110_SYSCLK_TIMER0>, + <&syscrg JH7110_SYSCLK_TIMER1>, + <&syscrg JH7110_SYSCLK_TIMER2>, + <&syscrg JH7110_SYSCLK_TIMER3>; + clock-names = "apb", "ch0", "ch1", + "ch2", "ch3"; + resets = <&syscrg JH7110_SYSRST_TIMER_APB>, + <&syscrg JH7110_SYSRST_TIMER0>, + <&syscrg JH7110_SYSRST_TIMER1>, + <&syscrg JH7110_SYSRST_TIMER2>, + <&syscrg JH7110_SYSRST_TIMER3>; + reset-names = "apb", "ch0", "ch1", + "ch2", "ch3"; + }; + watchdog@13070000 { compatible = "starfive,jh7110-wdt"; reg = <0x0 0x13070000 0x0 0x10000>;