From 9d77db3c730780c8ef5ccd4b66403ff5675cfe4e Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Mon, 13 May 2024 10:30:14 +0000
Subject: [PATCH] modify sin led gpio
---
kernel/drivers/clocksource/nomadik-mtu.c | 31 +++++++++++++------------------
1 files changed, 13 insertions(+), 18 deletions(-)
diff --git a/kernel/drivers/clocksource/nomadik-mtu.c b/kernel/drivers/clocksource/nomadik-mtu.c
index 8e4ddb9..1cf3304 100644
--- a/kernel/drivers/clocksource/nomadik-mtu.c
+++ b/kernel/drivers/clocksource/nomadik-mtu.c
@@ -1,11 +1,8 @@
+// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright (C) 2008 STMicroelectronics
* Copyright (C) 2010 Alessandro Rubini
* Copyright (C) 2010 Linus Walleij for ST-Ericsson
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2, as
- * published by the Free Software Foundation.
*/
#include <linux/init.h>
#include <linux/interrupt.h>
@@ -69,7 +66,6 @@
static u32 nmdk_cycle; /* write-once */
static struct delay_timer mtu_delay_timer;
-#ifdef CONFIG_CLKSRC_NOMADIK_MTU_SCHED_CLOCK
/*
* Override the global weak sched_clock symbol with this
* local implementation which uses the clocksource to get some
@@ -82,7 +78,6 @@
return -readl(mtu_base + MTU_VAL(0));
}
-#endif
static unsigned long nmdk_timer_read_current_timer(void)
{
@@ -186,18 +181,12 @@
return IRQ_HANDLED;
}
-static struct irqaction nmdk_timer_irq = {
- .name = "Nomadik Timer Tick",
- .flags = IRQF_TIMER,
- .handler = nmdk_timer_interrupt,
- .dev_id = &nmdk_clkevt,
-};
-
static int __init nmdk_timer_init(void __iomem *base, int irq,
struct clk *pclk, struct clk *clk)
{
unsigned long rate;
int ret;
+ int min_ticks;
mtu_base = base;
@@ -206,7 +195,8 @@
/*
* Tick rate is 2.4MHz for Nomadik and 2.4Mhz, 100MHz or 133 MHz
- * for ux500.
+ * for ux500, and in one specific Ux500 case 32768 Hz.
+ *
* Use a divide-by-16 counter if the tick rate is more than 32MHz.
* At 32 MHz, the timer (with 32 bit counter) can be programmed
* to wake-up at a max 127s a head in time. Dividing a 2.4 MHz timer
@@ -234,15 +224,20 @@
return ret;
}
-#ifdef CONFIG_CLKSRC_NOMADIK_MTU_SCHED_CLOCK
sched_clock_register(nomadik_read_sched_clock, 32, rate);
-#endif
/* Timer 1 is used for events, register irq and clockevents */
- setup_irq(irq, &nmdk_timer_irq);
+ if (request_irq(irq, nmdk_timer_interrupt, IRQF_TIMER,
+ "Nomadik Timer Tick", &nmdk_clkevt))
+ pr_err("%s: request_irq() failed\n", "Nomadik Timer Tick");
nmdk_clkevt.cpumask = cpumask_of(0);
nmdk_clkevt.irq = irq;
- clockevents_config_and_register(&nmdk_clkevt, rate, 2, 0xffffffffU);
+ if (rate < 100000)
+ min_ticks = 5;
+ else
+ min_ticks = 2;
+ clockevents_config_and_register(&nmdk_clkevt, rate, min_ticks,
+ 0xffffffffU);
mtu_delay_timer.read_current_timer = &nmdk_timer_read_current_timer;
mtu_delay_timer.freq = rate;
--
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