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PM / devfreq: exynos5: Use devm_devfreq_* function using device resource management 

This patch uses devm_devfreq_add_device()/devm_devfreq_register_opp_notifier()
to control automatically the resource of devfreq.

Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
Cc: Kukjin Kim <kgene.kim@samsung.com>
Cc: Sachin Kamat <sachin.kamat@linaro.org>
Cc: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Cc: Manish Badarkhe <badarkhe.manish@gmail.com>
Cc: Abhilash Kesavan <a.kesavan@samsung.com>
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-samsung-soc@vger.kernel.org
Signed-off-by: MyungJoo Ham <myungjoo.ham@samsung.com>
This commit is contained in:
Chanwoo Choi 2014-05-09 16:43:11 +09:00 committed by MyungJoo Ham
parent c1b13d4e54
commit 2456963c0b
1 changed files with 8 additions and 21 deletions
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29
drivers/devfreq/exynos/exynos5_bus.c
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@ -163,21 +163,12 @@ static int exynos5_int_get_dev_status(struct device *dev,
return 0; return 0;
} }
static void exynos5_int_exit(struct device *dev)
{
struct platform_device *pdev = container_of(dev, struct platform_device,
dev);
struct busfreq_data_int *data = platform_get_drvdata(pdev);
devfreq_unregister_opp_notifier(dev, data->devfreq);
}
static struct devfreq_dev_profile exynos5_devfreq_int_profile = { static struct devfreq_dev_profile exynos5_devfreq_int_profile = {
.initial_freq = 160000, .initial_freq = 160000,
.polling_ms = 100, .polling_ms = 100,
.target = exynos5_busfreq_int_target, .target = exynos5_busfreq_int_target,
.get_dev_status = exynos5_int_get_dev_status, .get_dev_status = exynos5_int_get_dev_status,
.exit = exynos5_int_exit,
}; };
static int exynos5250_init_int_tables(struct busfreq_data_int *data) static int exynos5250_init_int_tables(struct busfreq_data_int *data)
@ -343,30 +334,27 @@ static int exynos5_busfreq_int_probe(struct platform_device *pdev)
busfreq_mon_reset(ppmu_data); busfreq_mon_reset(ppmu_data);
data->devfreq = devfreq_add_device(dev, &exynos5_devfreq_int_profile, data->devfreq = devm_devfreq_add_device(dev, &exynos5_devfreq_int_profile,
"simple_ondemand", NULL); "simple_ondemand", NULL);
if (IS_ERR(data->devfreq))
return PTR_ERR(data->devfreq);
if (IS_ERR(data->devfreq)) { err = devm_devfreq_register_opp_notifier(dev, data->devfreq);
err = PTR_ERR(data->devfreq); if (err < 0) {
goto err_devfreq_add; dev_err(dev, "Failed to register opp notifier\n");
return err;
} }
devfreq_register_opp_notifier(dev, data->devfreq);
err = register_pm_notifier(&data->pm_notifier); err = register_pm_notifier(&data->pm_notifier);
if (err) { if (err) {
dev_err(dev, "Failed to setup pm notifier\n"); dev_err(dev, "Failed to setup pm notifier\n");
goto err_devfreq_add; return err;
} }
/* TODO: Add a new QOS class for int/mif bus */ /* TODO: Add a new QOS class for int/mif bus */
pm_qos_add_request(&data->int_req, PM_QOS_NETWORK_THROUGHPUT, -1); pm_qos_add_request(&data->int_req, PM_QOS_NETWORK_THROUGHPUT, -1);
return 0; return 0;
err_devfreq_add:
devfreq_remove_device(data->devfreq);
return err;
} }
static int exynos5_busfreq_int_remove(struct platform_device *pdev) static int exynos5_busfreq_int_remove(struct platform_device *pdev)
@ -375,7 +363,6 @@ static int exynos5_busfreq_int_remove(struct platform_device *pdev)
pm_qos_remove_request(&data->int_req); pm_qos_remove_request(&data->int_req);
unregister_pm_notifier(&data->pm_notifier); unregister_pm_notifier(&data->pm_notifier);
devfreq_remove_device(data->devfreq);
return 0; return 0;
} }