From patchwork Thu Jun 28 10:45:41 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Stanley Chu X-Patchwork-Id: 10493559 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 607F260325 for ; Thu, 28 Jun 2018 10:46:23 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 4AF2E29991 for ; Thu, 28 Jun 2018 10:46:23 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 3F088299D0; Thu, 28 Jun 2018 10:46:23 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.9 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID, MAILING_LIST_MULTI, UNPARSEABLE_RELAY autolearn=ham version=3.3.1 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 3C53329991 for ; Thu, 28 Jun 2018 10:46:22 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-ID:Date:Subject:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=3qTSoPl0nCiIzOqdw17elJYWT3mC7MSmF/ffSCZYCbY=; b=d22IkHyjVvgycF 6/dzyWGXeQ//LSeuFcaysSnS1jA4jS49uZw5fTIcQlf54GE+pODFyuZb80+G9eBcBbz7xmeegy8GW GRT6GrqlgJAoq79hhJm0aMx+tFQ1NNebGcao0scmY0rrSFIMe87HhoD48Rcuq1yYaq4kmYBTNcDqz vEibmUUn6mWGWRkwFT6tICPr+xdEOGLsRhvETEiTUab1ikkYHYY1Y7k+TLum2S4dO9/AwQtCerfr0 DPdkzGjB6i2qy8RRVDJSPik1TnMJkz8L8a7X5eNNSERNHa5/q/nr+Qb5jKI94HCUs0GWCPyckjYZJ 3aSB9UqjL2z79dP3AgQQ==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.90_1 #2 (Red Hat Linux)) id 1fYURQ-00051Y-8K for patchwork-linux-mediatek@patchwork.kernel.org; Thu, 28 Jun 2018 10:46:20 +0000 Received: from [210.61.82.183] (helo=mailgw01.mediatek.com) by bombadil.infradead.org with esmtps (Exim 4.90_1 #2 (Red Hat Linux)) id 1fYUR9-0004r1-1J for linux-mediatek@lists.infradead.org; Thu, 28 Jun 2018 10:46:10 +0000 X-UUID: 9ff4e8672a454e2ea32990287bb8a8d3-20180628 Received: from mtkexhb02.mediatek.inc [(172.21.101.103)] by mailgw01.mediatek.com (envelope-from ) (mhqrelay.mediatek.com ESMTP with TLS) with ESMTP id 973427688; Thu, 28 Jun 2018 18:45:49 +0800 Received: from mtkcas09.mediatek.inc (172.21.101.178) by mtkmbs01n2.mediatek.inc (172.21.101.79) with Microsoft SMTP Server (TLS) id 15.0.1210.3; Thu, 28 Jun 2018 18:45:47 +0800 Received: from mtkswgap22.mediatek.inc (172.21.77.33) by mtkcas09.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1210.3 via Frontend Transport; Thu, 28 Jun 2018 18:45:47 +0800 From: Stanley Chu To: Matthias Brugger , Daniel Lezcano , Thomas Gleixner , Rob Herring Subject: [PATCH v3 2/5] clocksource/drivers/timer-mediatek: Rename mtk_timer to timer-mediatek Date: Thu, 28 Jun 2018 18:45:41 +0800 Message-ID: <1530182744-10731-3-git-send-email-stanley.chu@mediatek.com> X-Mailer: git-send-email 1.7.9.5 In-Reply-To: <1530182744-10731-1-git-send-email-stanley.chu@mediatek.com> References: <1530182744-10731-1-git-send-email-stanley.chu@mediatek.com> MIME-Version: 1.0 X-MTK: N X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20180628_034603_655958_08277CCB X-CRM114-Status: GOOD ( 16.63 ) X-BeenThere: linux-mediatek@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: devicetree@vger.kernel.org, Stanley Chu , linux-mediatek@lists.infradead.org, linux-kernel@vger.kernel.org, wsd_upstream@mediatek.com Sender: "Linux-mediatek" Errors-To: linux-mediatek-bounces+patchwork-linux-mediatek=patchwork.kernel.org@lists.infradead.org X-Virus-Scanned: ClamAV using ClamSMTP Rename mtk_timer to timer-mediatek to apply new naming convention in clocksource folder. Signed-off-by: Stanley Chu --- drivers/clocksource/Makefile | 2 +- drivers/clocksource/mtk_timer.c | 268 ---------------------------------- drivers/clocksource/timer-mediatek.c | 268 ++++++++++++++++++++++++++++++++++ 3 files changed, 269 insertions(+), 269 deletions(-) delete mode 100644 drivers/clocksource/mtk_timer.c create mode 100644 drivers/clocksource/timer-mediatek.c diff --git a/drivers/clocksource/Makefile b/drivers/clocksource/Makefile index 00caf37..c070cc7 100644 --- a/drivers/clocksource/Makefile +++ b/drivers/clocksource/Makefile @@ -49,7 +49,7 @@ obj-$(CONFIG_CLKSRC_SAMSUNG_PWM) += samsung_pwm_timer.o obj-$(CONFIG_FSL_FTM_TIMER) += fsl_ftm_timer.o obj-$(CONFIG_VF_PIT_TIMER) += vf_pit_timer.o obj-$(CONFIG_CLKSRC_QCOM) += qcom-timer.o -obj-$(CONFIG_MTK_TIMER) += mtk_timer.o +obj-$(CONFIG_MTK_TIMER) += timer-mediatek.o obj-$(CONFIG_CLKSRC_PISTACHIO) += time-pistachio.o obj-$(CONFIG_CLKSRC_TI_32K) += timer-ti-32k.o obj-$(CONFIG_CLKSRC_NPS) += timer-nps.o diff --git a/drivers/clocksource/mtk_timer.c b/drivers/clocksource/mtk_timer.c deleted file mode 100644 index f9b724f..0000000 --- a/drivers/clocksource/mtk_timer.c +++ /dev/null @@ -1,268 +0,0 @@ -/* - * Mediatek SoCs General-Purpose Timer handling. - * - * Copyright (C) 2014 Matthias Brugger - * - * Matthias Brugger - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - */ - -#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt - -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include - -#define GPT_IRQ_EN_REG 0x00 -#define GPT_IRQ_ENABLE(val) BIT((val) - 1) -#define GPT_IRQ_ACK_REG 0x08 -#define GPT_IRQ_ACK(val) BIT((val) - 1) - -#define TIMER_CTRL_REG(val) (0x10 * (val)) -#define TIMER_CTRL_OP(val) (((val) & 0x3) << 4) -#define TIMER_CTRL_OP_ONESHOT (0) -#define TIMER_CTRL_OP_REPEAT (1) -#define TIMER_CTRL_OP_FREERUN (3) -#define TIMER_CTRL_CLEAR (2) -#define TIMER_CTRL_ENABLE (1) -#define TIMER_CTRL_DISABLE (0) - -#define TIMER_CLK_REG(val) (0x04 + (0x10 * (val))) -#define TIMER_CLK_SRC(val) (((val) & 0x1) << 4) -#define TIMER_CLK_SRC_SYS13M (0) -#define TIMER_CLK_SRC_RTC32K (1) -#define TIMER_CLK_DIV1 (0x0) -#define TIMER_CLK_DIV2 (0x1) - -#define TIMER_CNT_REG(val) (0x08 + (0x10 * (val))) -#define TIMER_CMP_REG(val) (0x0C + (0x10 * (val))) - -#define GPT_CLK_EVT 1 -#define GPT_CLK_SRC 2 - -struct mtk_clock_event_device { - void __iomem *gpt_base; - u32 ticks_per_jiffy; - struct clock_event_device dev; -}; - -static void __iomem *gpt_sched_reg __read_mostly; - -static u64 notrace mtk_read_sched_clock(void) -{ - return readl_relaxed(gpt_sched_reg); -} - -static inline struct mtk_clock_event_device *to_mtk_clk( - struct clock_event_device *c) -{ - return container_of(c, struct mtk_clock_event_device, dev); -} - -static void mtk_clkevt_time_stop(struct mtk_clock_event_device *evt, u8 timer) -{ - u32 val; - - val = readl(evt->gpt_base + TIMER_CTRL_REG(timer)); - writel(val & ~TIMER_CTRL_ENABLE, evt->gpt_base + - TIMER_CTRL_REG(timer)); -} - -static void mtk_clkevt_time_setup(struct mtk_clock_event_device *evt, - unsigned long delay, u8 timer) -{ - writel(delay, evt->gpt_base + TIMER_CMP_REG(timer)); -} - -static void mtk_clkevt_time_start(struct mtk_clock_event_device *evt, - bool periodic, u8 timer) -{ - u32 val; - - /* Acknowledge interrupt */ - writel(GPT_IRQ_ACK(timer), evt->gpt_base + GPT_IRQ_ACK_REG); - - val = readl(evt->gpt_base + TIMER_CTRL_REG(timer)); - - /* Clear 2 bit timer operation mode field */ - val &= ~TIMER_CTRL_OP(0x3); - - if (periodic) - val |= TIMER_CTRL_OP(TIMER_CTRL_OP_REPEAT); - else - val |= TIMER_CTRL_OP(TIMER_CTRL_OP_ONESHOT); - - writel(val | TIMER_CTRL_ENABLE | TIMER_CTRL_CLEAR, - evt->gpt_base + TIMER_CTRL_REG(timer)); -} - -static int mtk_clkevt_shutdown(struct clock_event_device *clk) -{ - mtk_clkevt_time_stop(to_mtk_clk(clk), GPT_CLK_EVT); - return 0; -} - -static int mtk_clkevt_set_periodic(struct clock_event_device *clk) -{ - struct mtk_clock_event_device *evt = to_mtk_clk(clk); - - mtk_clkevt_time_stop(evt, GPT_CLK_EVT); - mtk_clkevt_time_setup(evt, evt->ticks_per_jiffy, GPT_CLK_EVT); - mtk_clkevt_time_start(evt, true, GPT_CLK_EVT); - return 0; -} - -static int mtk_clkevt_next_event(unsigned long event, - struct clock_event_device *clk) -{ - struct mtk_clock_event_device *evt = to_mtk_clk(clk); - - mtk_clkevt_time_stop(evt, GPT_CLK_EVT); - mtk_clkevt_time_setup(evt, event, GPT_CLK_EVT); - mtk_clkevt_time_start(evt, false, GPT_CLK_EVT); - - return 0; -} - -static irqreturn_t mtk_timer_interrupt(int irq, void *dev_id) -{ - struct mtk_clock_event_device *evt = dev_id; - - /* Acknowledge timer0 irq */ - writel(GPT_IRQ_ACK(GPT_CLK_EVT), evt->gpt_base + GPT_IRQ_ACK_REG); - evt->dev.event_handler(&evt->dev); - - return IRQ_HANDLED; -} - -static void -__init mtk_timer_setup(struct mtk_clock_event_device *evt, u8 timer, u8 option) -{ - writel(TIMER_CTRL_CLEAR | TIMER_CTRL_DISABLE, - evt->gpt_base + TIMER_CTRL_REG(timer)); - - writel(TIMER_CLK_SRC(TIMER_CLK_SRC_SYS13M) | TIMER_CLK_DIV1, - evt->gpt_base + TIMER_CLK_REG(timer)); - - writel(0x0, evt->gpt_base + TIMER_CMP_REG(timer)); - - writel(TIMER_CTRL_OP(option) | TIMER_CTRL_ENABLE, - evt->gpt_base + TIMER_CTRL_REG(timer)); -} - -static void mtk_timer_enable_irq(struct mtk_clock_event_device *evt, u8 timer) -{ - u32 val; - - /* Disable all interrupts */ - writel(0x0, evt->gpt_base + GPT_IRQ_EN_REG); - - /* Acknowledge all spurious pending interrupts */ - writel(0x3f, evt->gpt_base + GPT_IRQ_ACK_REG); - - val = readl(evt->gpt_base + GPT_IRQ_EN_REG); - writel(val | GPT_IRQ_ENABLE(timer), - evt->gpt_base + GPT_IRQ_EN_REG); -} - -static int __init mtk_timer_init(struct device_node *node) -{ - struct mtk_clock_event_device *evt; - struct resource res; - unsigned long rate = 0; - struct clk *clk; - - evt = kzalloc(sizeof(*evt), GFP_KERNEL); - if (!evt) - return -ENOMEM; - - evt->dev.name = "mtk_tick"; - evt->dev.rating = 300; - evt->dev.features = CLOCK_EVT_FEAT_PERIODIC | CLOCK_EVT_FEAT_ONESHOT; - evt->dev.set_state_shutdown = mtk_clkevt_shutdown; - evt->dev.set_state_periodic = mtk_clkevt_set_periodic; - evt->dev.set_state_oneshot = mtk_clkevt_shutdown; - evt->dev.tick_resume = mtk_clkevt_shutdown; - evt->dev.set_next_event = mtk_clkevt_next_event; - evt->dev.cpumask = cpu_possible_mask; - - evt->gpt_base = of_io_request_and_map(node, 0, "mtk-timer"); - if (IS_ERR(evt->gpt_base)) { - pr_err("Can't get resource\n"); - goto err_kzalloc; - } - - evt->dev.irq = irq_of_parse_and_map(node, 0); - if (evt->dev.irq <= 0) { - pr_err("Can't parse IRQ\n"); - goto err_mem; - } - - clk = of_clk_get(node, 0); - if (IS_ERR(clk)) { - pr_err("Can't get timer clock\n"); - goto err_irq; - } - - if (clk_prepare_enable(clk)) { - pr_err("Can't prepare clock\n"); - goto err_clk_put; - } - rate = clk_get_rate(clk); - - if (request_irq(evt->dev.irq, mtk_timer_interrupt, - IRQF_TIMER | IRQF_IRQPOLL, "mtk_timer", evt)) { - pr_err("failed to setup irq %d\n", evt->dev.irq); - goto err_clk_disable; - } - - evt->ticks_per_jiffy = DIV_ROUND_UP(rate, HZ); - - /* Configure clock source */ - mtk_timer_setup(evt, GPT_CLK_SRC, TIMER_CTRL_OP_FREERUN); - clocksource_mmio_init(evt->gpt_base + TIMER_CNT_REG(GPT_CLK_SRC), - node->name, rate, 300, 32, clocksource_mmio_readl_up); - gpt_sched_reg = evt->gpt_base + TIMER_CNT_REG(GPT_CLK_SRC); - sched_clock_register(mtk_read_sched_clock, 32, rate); - - /* Configure clock event */ - mtk_timer_setup(evt, GPT_CLK_EVT, TIMER_CTRL_OP_REPEAT); - clockevents_config_and_register(&evt->dev, rate, 0x3, - 0xffffffff); - - mtk_timer_enable_irq(evt, GPT_CLK_EVT); - - return 0; - -err_clk_disable: - clk_disable_unprepare(clk); -err_clk_put: - clk_put(clk); -err_irq: - irq_dispose_mapping(evt->dev.irq); -err_mem: - iounmap(evt->gpt_base); - of_address_to_resource(node, 0, &res); - release_mem_region(res.start, resource_size(&res)); -err_kzalloc: - kfree(evt); - - return -EINVAL; -} -TIMER_OF_DECLARE(mtk_mt6577, "mediatek,mt6577-timer", mtk_timer_init); diff --git a/drivers/clocksource/timer-mediatek.c b/drivers/clocksource/timer-mediatek.c new file mode 100644 index 0000000..f9b724f --- /dev/null +++ b/drivers/clocksource/timer-mediatek.c @@ -0,0 +1,268 @@ +/* + * Mediatek SoCs General-Purpose Timer handling. + * + * Copyright (C) 2014 Matthias Brugger + * + * Matthias Brugger + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#define GPT_IRQ_EN_REG 0x00 +#define GPT_IRQ_ENABLE(val) BIT((val) - 1) +#define GPT_IRQ_ACK_REG 0x08 +#define GPT_IRQ_ACK(val) BIT((val) - 1) + +#define TIMER_CTRL_REG(val) (0x10 * (val)) +#define TIMER_CTRL_OP(val) (((val) & 0x3) << 4) +#define TIMER_CTRL_OP_ONESHOT (0) +#define TIMER_CTRL_OP_REPEAT (1) +#define TIMER_CTRL_OP_FREERUN (3) +#define TIMER_CTRL_CLEAR (2) +#define TIMER_CTRL_ENABLE (1) +#define TIMER_CTRL_DISABLE (0) + +#define TIMER_CLK_REG(val) (0x04 + (0x10 * (val))) +#define TIMER_CLK_SRC(val) (((val) & 0x1) << 4) +#define TIMER_CLK_SRC_SYS13M (0) +#define TIMER_CLK_SRC_RTC32K (1) +#define TIMER_CLK_DIV1 (0x0) +#define TIMER_CLK_DIV2 (0x1) + +#define TIMER_CNT_REG(val) (0x08 + (0x10 * (val))) +#define TIMER_CMP_REG(val) (0x0C + (0x10 * (val))) + +#define GPT_CLK_EVT 1 +#define GPT_CLK_SRC 2 + +struct mtk_clock_event_device { + void __iomem *gpt_base; + u32 ticks_per_jiffy; + struct clock_event_device dev; +}; + +static void __iomem *gpt_sched_reg __read_mostly; + +static u64 notrace mtk_read_sched_clock(void) +{ + return readl_relaxed(gpt_sched_reg); +} + +static inline struct mtk_clock_event_device *to_mtk_clk( + struct clock_event_device *c) +{ + return container_of(c, struct mtk_clock_event_device, dev); +} + +static void mtk_clkevt_time_stop(struct mtk_clock_event_device *evt, u8 timer) +{ + u32 val; + + val = readl(evt->gpt_base + TIMER_CTRL_REG(timer)); + writel(val & ~TIMER_CTRL_ENABLE, evt->gpt_base + + TIMER_CTRL_REG(timer)); +} + +static void mtk_clkevt_time_setup(struct mtk_clock_event_device *evt, + unsigned long delay, u8 timer) +{ + writel(delay, evt->gpt_base + TIMER_CMP_REG(timer)); +} + +static void mtk_clkevt_time_start(struct mtk_clock_event_device *evt, + bool periodic, u8 timer) +{ + u32 val; + + /* Acknowledge interrupt */ + writel(GPT_IRQ_ACK(timer), evt->gpt_base + GPT_IRQ_ACK_REG); + + val = readl(evt->gpt_base + TIMER_CTRL_REG(timer)); + + /* Clear 2 bit timer operation mode field */ + val &= ~TIMER_CTRL_OP(0x3); + + if (periodic) + val |= TIMER_CTRL_OP(TIMER_CTRL_OP_REPEAT); + else + val |= TIMER_CTRL_OP(TIMER_CTRL_OP_ONESHOT); + + writel(val | TIMER_CTRL_ENABLE | TIMER_CTRL_CLEAR, + evt->gpt_base + TIMER_CTRL_REG(timer)); +} + +static int mtk_clkevt_shutdown(struct clock_event_device *clk) +{ + mtk_clkevt_time_stop(to_mtk_clk(clk), GPT_CLK_EVT); + return 0; +} + +static int mtk_clkevt_set_periodic(struct clock_event_device *clk) +{ + struct mtk_clock_event_device *evt = to_mtk_clk(clk); + + mtk_clkevt_time_stop(evt, GPT_CLK_EVT); + mtk_clkevt_time_setup(evt, evt->ticks_per_jiffy, GPT_CLK_EVT); + mtk_clkevt_time_start(evt, true, GPT_CLK_EVT); + return 0; +} + +static int mtk_clkevt_next_event(unsigned long event, + struct clock_event_device *clk) +{ + struct mtk_clock_event_device *evt = to_mtk_clk(clk); + + mtk_clkevt_time_stop(evt, GPT_CLK_EVT); + mtk_clkevt_time_setup(evt, event, GPT_CLK_EVT); + mtk_clkevt_time_start(evt, false, GPT_CLK_EVT); + + return 0; +} + +static irqreturn_t mtk_timer_interrupt(int irq, void *dev_id) +{ + struct mtk_clock_event_device *evt = dev_id; + + /* Acknowledge timer0 irq */ + writel(GPT_IRQ_ACK(GPT_CLK_EVT), evt->gpt_base + GPT_IRQ_ACK_REG); + evt->dev.event_handler(&evt->dev); + + return IRQ_HANDLED; +} + +static void +__init mtk_timer_setup(struct mtk_clock_event_device *evt, u8 timer, u8 option) +{ + writel(TIMER_CTRL_CLEAR | TIMER_CTRL_DISABLE, + evt->gpt_base + TIMER_CTRL_REG(timer)); + + writel(TIMER_CLK_SRC(TIMER_CLK_SRC_SYS13M) | TIMER_CLK_DIV1, + evt->gpt_base + TIMER_CLK_REG(timer)); + + writel(0x0, evt->gpt_base + TIMER_CMP_REG(timer)); + + writel(TIMER_CTRL_OP(option) | TIMER_CTRL_ENABLE, + evt->gpt_base + TIMER_CTRL_REG(timer)); +} + +static void mtk_timer_enable_irq(struct mtk_clock_event_device *evt, u8 timer) +{ + u32 val; + + /* Disable all interrupts */ + writel(0x0, evt->gpt_base + GPT_IRQ_EN_REG); + + /* Acknowledge all spurious pending interrupts */ + writel(0x3f, evt->gpt_base + GPT_IRQ_ACK_REG); + + val = readl(evt->gpt_base + GPT_IRQ_EN_REG); + writel(val | GPT_IRQ_ENABLE(timer), + evt->gpt_base + GPT_IRQ_EN_REG); +} + +static int __init mtk_timer_init(struct device_node *node) +{ + struct mtk_clock_event_device *evt; + struct resource res; + unsigned long rate = 0; + struct clk *clk; + + evt = kzalloc(sizeof(*evt), GFP_KERNEL); + if (!evt) + return -ENOMEM; + + evt->dev.name = "mtk_tick"; + evt->dev.rating = 300; + evt->dev.features = CLOCK_EVT_FEAT_PERIODIC | CLOCK_EVT_FEAT_ONESHOT; + evt->dev.set_state_shutdown = mtk_clkevt_shutdown; + evt->dev.set_state_periodic = mtk_clkevt_set_periodic; + evt->dev.set_state_oneshot = mtk_clkevt_shutdown; + evt->dev.tick_resume = mtk_clkevt_shutdown; + evt->dev.set_next_event = mtk_clkevt_next_event; + evt->dev.cpumask = cpu_possible_mask; + + evt->gpt_base = of_io_request_and_map(node, 0, "mtk-timer"); + if (IS_ERR(evt->gpt_base)) { + pr_err("Can't get resource\n"); + goto err_kzalloc; + } + + evt->dev.irq = irq_of_parse_and_map(node, 0); + if (evt->dev.irq <= 0) { + pr_err("Can't parse IRQ\n"); + goto err_mem; + } + + clk = of_clk_get(node, 0); + if (IS_ERR(clk)) { + pr_err("Can't get timer clock\n"); + goto err_irq; + } + + if (clk_prepare_enable(clk)) { + pr_err("Can't prepare clock\n"); + goto err_clk_put; + } + rate = clk_get_rate(clk); + + if (request_irq(evt->dev.irq, mtk_timer_interrupt, + IRQF_TIMER | IRQF_IRQPOLL, "mtk_timer", evt)) { + pr_err("failed to setup irq %d\n", evt->dev.irq); + goto err_clk_disable; + } + + evt->ticks_per_jiffy = DIV_ROUND_UP(rate, HZ); + + /* Configure clock source */ + mtk_timer_setup(evt, GPT_CLK_SRC, TIMER_CTRL_OP_FREERUN); + clocksource_mmio_init(evt->gpt_base + TIMER_CNT_REG(GPT_CLK_SRC), + node->name, rate, 300, 32, clocksource_mmio_readl_up); + gpt_sched_reg = evt->gpt_base + TIMER_CNT_REG(GPT_CLK_SRC); + sched_clock_register(mtk_read_sched_clock, 32, rate); + + /* Configure clock event */ + mtk_timer_setup(evt, GPT_CLK_EVT, TIMER_CTRL_OP_REPEAT); + clockevents_config_and_register(&evt->dev, rate, 0x3, + 0xffffffff); + + mtk_timer_enable_irq(evt, GPT_CLK_EVT); + + return 0; + +err_clk_disable: + clk_disable_unprepare(clk); +err_clk_put: + clk_put(clk); +err_irq: + irq_dispose_mapping(evt->dev.irq); +err_mem: + iounmap(evt->gpt_base); + of_address_to_resource(node, 0, &res); + release_mem_region(res.start, resource_size(&res)); +err_kzalloc: + kfree(evt); + + return -EINVAL; +} +TIMER_OF_DECLARE(mtk_mt6577, "mediatek,mt6577-timer", mtk_timer_init);