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/exynos_mct.c | 90 +++++++++++++++++++++++---------------------
1 files changed, 47 insertions(+), 43 deletions(-)
diff --git a/kernel/drivers/clocksource/exynos_mct.c b/kernel/drivers/clocksource/exynos_mct.c
index e3ae041..df194b0 100644
--- a/kernel/drivers/clocksource/exynos_mct.c
+++ b/kernel/drivers/clocksource/exynos_mct.c
@@ -1,23 +1,18 @@
+// SPDX-License-Identifier: GPL-2.0-only
/* linux/arch/arm/mach-exynos4/mct.c
*
* Copyright (c) 2011 Samsung Electronics Co., Ltd.
* http://www.samsung.com
*
- * EXYNOS4 MCT(Multi-Core Timer) support
- *
- * 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.
+ * Exynos4 MCT(Multi-Core Timer) support
*/
-#include <linux/sched.h>
#include <linux/interrupt.h>
#include <linux/irq.h>
#include <linux/err.h>
#include <linux/clk.h>
#include <linux/clockchips.h>
#include <linux/cpu.h>
-#include <linux/platform_device.h>
#include <linux/delay.h>
#include <linux/percpu.h>
#include <linux/of.h>
@@ -334,19 +329,15 @@
return IRQ_HANDLED;
}
-static struct irqaction mct_comp_event_irq = {
- .name = "mct_comp_irq",
- .flags = IRQF_TIMER | IRQF_IRQPOLL,
- .handler = exynos4_mct_comp_isr,
- .dev_id = &mct_comp_device,
-};
-
static int exynos4_clockevent_init(void)
{
mct_comp_device.cpumask = cpumask_of(0);
clockevents_config_and_register(&mct_comp_device, clk_rate,
0xf, 0xffffffff);
- setup_irq(mct_irqs[MCT_G0_IRQ], &mct_comp_event_irq);
+ if (request_irq(mct_irqs[MCT_G0_IRQ], exynos4_mct_comp_isr,
+ IRQF_TIMER | IRQF_IRQPOLL, "mct_comp_irq",
+ &mct_comp_device))
+ pr_err("%s: request_irq() failed\n", "mct_comp_irq");
return 0;
}
@@ -503,25 +494,50 @@
return 0;
}
-static int __init exynos4_timer_resources(struct device_node *np, void __iomem *base)
+static int __init exynos4_timer_resources(struct device_node *np)
{
- int err, cpu;
struct clk *mct_clk, *tick_clk;
- tick_clk = np ? of_clk_get_by_name(np, "fin_pll") :
- clk_get(NULL, "fin_pll");
+ reg_base = of_iomap(np, 0);
+ if (!reg_base)
+ panic("%s: unable to ioremap mct address space\n", __func__);
+
+ tick_clk = of_clk_get_by_name(np, "fin_pll");
if (IS_ERR(tick_clk))
panic("%s: unable to determine tick clock rate\n", __func__);
clk_rate = clk_get_rate(tick_clk);
- mct_clk = np ? of_clk_get_by_name(np, "mct") : clk_get(NULL, "mct");
+ mct_clk = of_clk_get_by_name(np, "mct");
if (IS_ERR(mct_clk))
panic("%s: unable to retrieve mct clock instance\n", __func__);
clk_prepare_enable(mct_clk);
- reg_base = base;
- if (!reg_base)
- panic("%s: unable to ioremap mct address space\n", __func__);
+ return 0;
+}
+
+static int __init exynos4_timer_interrupts(struct device_node *np,
+ unsigned int int_type)
+{
+ int nr_irqs, i, err, cpu;
+
+ mct_int_type = int_type;
+
+ /* This driver uses only one global timer interrupt */
+ mct_irqs[MCT_G0_IRQ] = irq_of_parse_and_map(np, MCT_G0_IRQ);
+
+ /*
+ * Find out the number of local irqs specified. The local
+ * timer irqs are specified after the four global timer
+ * irqs are specified.
+ */
+ nr_irqs = of_irq_count(np);
+ if (nr_irqs > ARRAY_SIZE(mct_irqs)) {
+ pr_err("exynos-mct: too many (%d) interrupts configured in DT\n",
+ nr_irqs);
+ nr_irqs = ARRAY_SIZE(mct_irqs);
+ }
+ for (i = MCT_L0_IRQ; i < nr_irqs; i++)
+ mct_irqs[i] = irq_of_parse_and_map(np, i);
if (mct_int_type == MCT_INT_PPI) {
@@ -532,11 +548,14 @@
mct_irqs[MCT_L0_IRQ], err);
} else {
for_each_possible_cpu(cpu) {
- int mct_irq = mct_irqs[MCT_L0_IRQ + cpu];
+ int mct_irq;
struct mct_clock_event_device *pcpu_mevt =
per_cpu_ptr(&percpu_mct_tick, cpu);
pcpu_mevt->evt.irq = -1;
+ if (MCT_L0_IRQ + cpu >= ARRAY_SIZE(mct_irqs))
+ break;
+ mct_irq = mct_irqs[MCT_L0_IRQ + cpu];
irq_set_status_flags(mct_irq, IRQ_NOAUTOEN);
if (request_irq(mct_irq,
@@ -581,28 +600,13 @@
static int __init mct_init_dt(struct device_node *np, unsigned int int_type)
{
- u32 nr_irqs, i;
int ret;
- mct_int_type = int_type;
+ ret = exynos4_timer_resources(np);
+ if (ret)
+ return ret;
- /* This driver uses only one global timer interrupt */
- mct_irqs[MCT_G0_IRQ] = irq_of_parse_and_map(np, MCT_G0_IRQ);
-
- /*
- * Find out the number of local irqs specified. The local
- * timer irqs are specified after the four global timer
- * irqs are specified.
- */
-#ifdef CONFIG_OF
- nr_irqs = of_irq_count(np);
-#else
- nr_irqs = 0;
-#endif
- for (i = MCT_L0_IRQ; i < nr_irqs; i++)
- mct_irqs[i] = irq_of_parse_and_map(np, i);
-
- ret = exynos4_timer_resources(np, of_iomap(np, 0));
+ ret = exynos4_timer_interrupts(np, int_type);
if (ret)
return ret;
--
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