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Message-ID: <1530831546-6475-3-git-send-email-stanley.chu@mediatek.com>
Date: Fri, 6 Jul 2018 06:59:03 +0800
From: Stanley Chu <stanley.chu@...iatek.com>
To: Matthias Brugger <matthias.bgg@...il.com>,
Daniel Lezcano <daniel.lezcano@...aro.org>,
Thomas Gleixner <tglx@...utronix.de>,
Rob Herring <robh+dt@...nel.org>
CC: <linux-kernel@...r.kernel.org>,
<linux-mediatek@...ts.infradead.org>, <devicetree@...r.kernel.org>,
<wsd_upstream@...iatek.com>, Stanley Chu <stanley.chu@...iatek.com>
Subject: [PATCH v8 2/5] clocksource/drivers/timer-mediatek: Rename mtk_timer to timer-mediatek
Rename mtk_timer to timer-mediatek to apply new naming convention
in clocksource folder.
Signed-off-by: Stanley Chu <stanley.chu@...iatek.com>
---
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 <matthias.bgg@...il.com>
- *
- * 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 <linux/clk.h>
-#include <linux/clockchips.h>
-#include <linux/interrupt.h>
-#include <linux/irq.h>
-#include <linux/irqreturn.h>
-#include <linux/of.h>
-#include <linux/of_address.h>
-#include <linux/of_irq.h>
-#include <linux/sched_clock.h>
-#include <linux/slab.h>
-
-#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 <matthias.bgg@...il.com>
+ *
+ * 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 <linux/clk.h>
+#include <linux/clockchips.h>
+#include <linux/interrupt.h>
+#include <linux/irq.h>
+#include <linux/irqreturn.h>
+#include <linux/of.h>
+#include <linux/of_address.h>
+#include <linux/of_irq.h>
+#include <linux/sched_clock.h>
+#include <linux/slab.h>
+
+#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);
--
1.7.9.5
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