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authorMarc Kleine-Budde <mkl@pengutronix.de>2020-11-30 14:37:13 +0100
committerMarc Kleine-Budde <mkl@pengutronix.de>2020-11-30 14:55:41 +0100
commit6d9986b46fc12f4a36fc243698deb774323b76f3 (patch)
tree25907951504d584137849d37246c926be56b4f68 /drivers
parentba844cb96f7735cbfea925c5fc723d8d769d5c51 (diff)
can: m_can: m_can_class_unregister(): move right after m_can_class_register()
This patch moves the function m_can_class_unregister() directly after the m_can_class_register() function. Link: https://lore.kernel.org/r/20201130133713.269256-7-mkl@pengutronix.de Reviewed-by: Dan Murphy <dmurphy@ti.com> Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/net/can/m_can/m_can.c16
1 files changed, 8 insertions, 8 deletions
diff --git a/drivers/net/can/m_can/m_can.c b/drivers/net/can/m_can/m_can.c
index 553ff39199aa..05c978d1c53d 100644
--- a/drivers/net/can/m_can/m_can.c
+++ b/drivers/net/can/m_can/m_can.c
@@ -1869,6 +1869,14 @@ pm_runtime_fail:
}
EXPORT_SYMBOL_GPL(m_can_class_register);
+void m_can_class_unregister(struct m_can_classdev *m_can_dev)
+{
+ unregister_candev(m_can_dev->net);
+
+ m_can_clk_stop(m_can_dev);
+}
+EXPORT_SYMBOL_GPL(m_can_class_unregister);
+
int m_can_class_suspend(struct device *dev)
{
struct net_device *ndev = dev_get_drvdata(dev);
@@ -1915,14 +1923,6 @@ int m_can_class_resume(struct device *dev)
}
EXPORT_SYMBOL_GPL(m_can_class_resume);
-void m_can_class_unregister(struct m_can_classdev *m_can_dev)
-{
- unregister_candev(m_can_dev->net);
-
- m_can_clk_stop(m_can_dev);
-}
-EXPORT_SYMBOL_GPL(m_can_class_unregister);
-
MODULE_AUTHOR("Dong Aisheng <b29396@freescale.com>");
MODULE_AUTHOR("Dan Murphy <dmurphy@ti.com>");
MODULE_LICENSE("GPL v2");
generated by cgit v1.2.3 (git 2.25.1) at 2024-09-13 07:48:39 +0000
id='n158' href='#n158'>158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 
/*
 * CPU idle driver for Tegra CPUs
 *
 * Copyright (c) 2010-2012, NVIDIA Corporation.
 * Copyright (c) 2011 Google, Inc.
 * Author: Colin Cross <ccross@android.com>
 *         Gary King <gking@nvidia.com>
 *
 * Rework for 3.3 by Peter De Schrijver <pdeschrijver@nvidia.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.
 */

#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/cpuidle.h>
#include <linux/cpu_pm.h>
#include <linux/clockchips.h>

#include <asm/cpuidle.h>
#include <asm/proc-fns.h>
#include <asm/suspend.h>
#include <asm/smp_plat.h>

#include "pm.h"
#include "sleep.h"
#include "tegra_cpu_car.h"

#ifdef CONFIG_PM_SLEEP
static int tegra30_idle_lp2(struct cpuidle_device *dev,
			    struct cpuidle_driver *drv,
			    int index);
#endif

static struct cpuidle_driver tegra_idle_driver = {
	.name = "tegra_idle",
	.owner = THIS_MODULE,
	.en_core_tk_irqen = 1,
#ifdef CONFIG_PM_SLEEP
	.state_count = 2,
#else
	.state_count = 1,
#endif
	.states = {
		[0] = ARM_CPUIDLE_WFI_STATE_PWR(600),
#ifdef CONFIG_PM_SLEEP
		[1] = {
			.enter			= tegra30_idle_lp2,
			.exit_latency		= 2000,
			.target_residency	= 2200,
			.power_usage		= 0,
			.flags			= CPUIDLE_FLAG_TIME_VALID,
			.name			= "powered-down",
			.desc			= "CPU power gated",
		},
#endif
	},
};

static DEFINE_PER_CPU(struct cpuidle_device, tegra_idle_device);

#ifdef CONFIG_PM_SLEEP
static bool tegra30_cpu_cluster_power_down(struct cpuidle_device *dev,
					   struct cpuidle_driver *drv,
					   int index)
{
	struct cpuidle_state *state = &drv->states[index];
	u32 cpu_on_time = state->exit_latency;
	u32 cpu_off_time = state->target_residency - state->exit_latency;

	/* All CPUs entering LP2 is not working.
	 * Don't let CPU0 enter LP2 when any secondary CPU is online.
	 */
	if (num_online_cpus() > 1 || !tegra_cpu_rail_off_ready()) {
		cpu_do_idle();
		return false;
	}

	clockevents_notify(CLOCK_EVT_NOTIFY_BROADCAST_ENTER, &dev->cpu);

	tegra_idle_lp2_last(cpu_on_time, cpu_off_time);

	clockevents_notify(CLOCK_EVT_NOTIFY_BROADCAST_EXIT, &dev->cpu);

	return true;
}

#ifdef CONFIG_SMP
static bool tegra30_cpu_core_power_down(struct cpuidle_device *dev,
					struct cpuidle_driver *drv,
					int index)
{
	clockevents_notify(CLOCK_EVT_NOTIFY_BROADCAST_ENTER, &dev->cpu);

	smp_wmb();

	save_cpu_arch_register();

	cpu_suspend(0, tegra30_sleep_cpu_secondary_finish);

	restore_cpu_arch_register();

	clockevents_notify(CLOCK_EVT_NOTIFY_BROADCAST_EXIT, &dev->cpu);

	return true;
}
#else
static inline bool tegra30_cpu_core_power_down(struct cpuidle_device *dev,
					       struct cpuidle_driver *drv,
					       int index)
{
	return true;
}
#endif

static int tegra30_idle_lp2(struct cpuidle_device *dev,
			    struct cpuidle_driver *drv,
			    int index)
{
	u32 cpu = is_smp() ? cpu_logical_map(dev->cpu) : dev->cpu;
	bool entered_lp2 = false;
	bool last_cpu;

	local_fiq_disable();

	last_cpu = tegra_set_cpu_in_lp2(cpu);
	cpu_pm_enter();

	if (cpu == 0) {
		if (last_cpu)
			entered_lp2 = tegra30_cpu_cluster_power_down(dev, drv,
								     index);
		else
			cpu_do_idle();
	} else {
		entered_lp2 = tegra30_cpu_core_power_down(dev, drv, index);
	}

	cpu_pm_exit();
	tegra_clear_cpu_in_lp2(cpu);

	local_fiq_enable();

	smp_rmb();

	return (entered_lp2) ? index : 0;
}
#endif

int __init tegra30_cpuidle_init(void)
{
	int ret;
	unsigned int cpu;
	struct cpuidle_device *dev;
	struct cpuidle_driver *drv = &tegra_idle_driver;

#ifdef CONFIG_PM_SLEEP
	tegra_tear_down_cpu = tegra30_tear_down_cpu;
#endif

	ret = cpuidle_register_driver(&tegra_idle_driver);
	if (ret) {
		pr_err("CPUidle driver registration failed\n");
		return ret;
	}

	for_each_possible_cpu(cpu) {
		dev = &per_cpu(tegra_idle_device, cpu);
		dev->cpu = cpu;

		dev->state_count = drv->state_count;
		ret = cpuidle_register_device(dev);
		if (ret) {
			pr_err("CPU%u: CPUidle device registration failed\n",
				cpu);
			return ret;
		}
	}
	return 0;
}