From 102a0743326a03cd1a1202ceda21e175b7d3575c Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Tue, 20 Feb 2024 01:20:52 +0000
Subject: [PATCH] add new system file
---
kernel/drivers/clocksource/arm_global_timer.c | 98 +------------------------------------------------
1 files changed, 2 insertions(+), 96 deletions(-)
diff --git a/kernel/drivers/clocksource/arm_global_timer.c b/kernel/drivers/clocksource/arm_global_timer.c
index f60e772..88b2d38 100644
--- a/kernel/drivers/clocksource/arm_global_timer.c
+++ b/kernel/drivers/clocksource/arm_global_timer.c
@@ -1,13 +1,10 @@
+// SPDX-License-Identifier: GPL-2.0-only
/*
* drivers/clocksource/arm_global_timer.c
*
* Copyright (C) 2013 STMicroelectronics (R&D) Limited.
* Author: Stuart Menefy <stuart.menefy@st.com>
* Author: Srinivas Kandagatla <srinivas.kandagatla@st.com>
- *
- * 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>
@@ -49,7 +46,6 @@
* the units for all operations.
*/
static void __iomem *gt_base;
-static struct clk *gt_clk;
static unsigned long gt_clk_rate;
static int gt_ppi;
static struct clock_event_device __percpu *gt_evt;
@@ -137,97 +133,6 @@
gt_compare_set(evt, 0);
return 0;
}
-
-#ifdef CONFIG_COMMON_CLK
-
-/*
- * Updates clockevent frequency when the cpu frequency changes.
- * Called on the cpu that is changing frequency with interrupts disabled.
- */
-static void gt_update_frequency(void *new_rate)
-{
- gt_clk_rate = *((unsigned long *) new_rate);
-
- clockevents_update_freq(raw_cpu_ptr(gt_evt), gt_clk_rate);
-}
-
-static int gt_rate_change(struct notifier_block *nb,
- unsigned long flags, void *data)
-{
- struct clk_notifier_data *cnd = data;
-
- /*
- * The gt clock events must be reprogrammed to account for the new
- * frequency. The timer is local to a cpu, so cross-call to the
- * changing cpu.
- */
- if (flags == POST_RATE_CHANGE)
- on_each_cpu(gt_update_frequency,
- (void *)&cnd->new_rate, 1);
-
- return NOTIFY_OK;
-}
-
-static struct notifier_block gt_clk_nb = {
- .notifier_call = gt_rate_change,
-};
-
-static int gt_clk_init(void)
-{
- if (gt_evt && raw_cpu_ptr(gt_evt) && !IS_ERR(gt_clk))
- return clk_notifier_register(gt_clk, >_clk_nb);
-
- return 0;
-}
-core_initcall(gt_clk_init);
-
-#elif defined (CONFIG_CPU_FREQ)
-
-#include <linux/cpufreq.h>
-
-/*
- * Updates clockevent frequency when the cpu frequency changes.
- * Called on the cpu that is changing frequency with interrupts disabled.
- */
-static void gt_update_frequency(void *data)
-{
- gt_clk_rate = clk_get_rate(gt_clk);
-
- clockevents_update_freq(raw_cpu_ptr(gt_evt), gt_clk_rate);
-}
-
-static int gt_cpufreq_transition(struct notifier_block *nb,
- unsigned long state, void *data)
-{
- struct cpufreq_freqs *freqs = data;
-
- /*
- * The gt clock events must be reprogrammed to account for the new
- * frequency. The timer is local to a cpu, so cross-call to the
- * changing cpu.
- */
- if (state == CPUFREQ_POSTCHANGE)
- smp_call_function_single(freqs->cpu, gt_update_frequency,
- NULL, 1);
-
- return NOTIFY_OK;
-}
-
-static struct notifier_block gt_cpufreq_nb = {
- .notifier_call = gt_cpufreq_transition,
-};
-
-static int gt_cpufreq_init(void)
-{
- if (gt_evt && raw_cpu_ptr(gt_evt) && !IS_ERR(gt_clk))
- return cpufreq_register_notifier(>_cpufreq_nb,
- CPUFREQ_TRANSITION_NOTIFIER);
-
- return 0;
-}
-core_initcall(gt_cpufreq_init);
-
-#endif
static irqreturn_t gt_clockevent_interrupt(int irq, void *dev_id)
{
@@ -349,6 +254,7 @@
static int __init global_timer_of_register(struct device_node *np)
{
+ struct clk *gt_clk;
int err = 0;
/*
--
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