mirrors/linux-stable
1
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git synced 2024-09-29 13:53:33 +00:00
Code Issues Releases Wiki Activity

PM / devfreq: exynos-bus: Extract exynos_bus_profile_init_passive()

Browse source 
This patch adds a new exynos_bus_profile_init_passive()
extracted from exynos_bus_probe() for devfreq device using passive governor.

Signed-off-by: Artur Świgoń <a.swigon@samsung.com>
[cw00.choi: Edit description to indicate that function is for devfreq device
using passive governor]
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
This commit is contained in:
Artur Świgoń 2019-12-09 11:49:00 +01:00 committed by Chanwoo Choi
parent a47a97ece5
commit a05bb96343
1 changed files with 42 additions and 28 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

70
drivers/devfreq/exynos-bus.c
View file

@ -345,13 +345,51 @@ static int exynos_bus_profile_init(struct exynos_bus *bus,
return ret;
}
static int exynos_bus_profile_init_passive(struct exynos_bus *bus,
struct devfreq_dev_profile *profile)
{
struct device *dev = bus->dev;
struct devfreq_passive_data *passive_data;
struct devfreq *parent_devfreq;
int ret = 0;
/* Initialize the struct profile and governor data for passive device */
profile->target = exynos_bus_target;
profile->exit = exynos_bus_passive_exit;
/* Get the instance of parent devfreq device */
parent_devfreq = devfreq_get_devfreq_by_phandle(dev, 0);
if (IS_ERR(parent_devfreq)) {
ret = -EPROBE_DEFER;
goto err;
}
passive_data = devm_kzalloc(dev, sizeof(*passive_data), GFP_KERNEL);
if (!passive_data) {
ret = -ENOMEM;
goto err;
}
passive_data->parent = parent_devfreq;
/* Add devfreq device for exynos bus with passive governor */
bus->devfreq = devm_devfreq_add_device(dev, profile, DEVFREQ_GOV_PASSIVE,
passive_data);
if (IS_ERR(bus->devfreq)) {
dev_err(dev,
"failed to add devfreq dev with passive governor\n");
ret = PTR_ERR(bus->devfreq);
goto err;
}
err:
return ret;
}
static int exynos_bus_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
struct device_node *np = dev->of_node, *node;
struct devfreq_dev_profile *profile;
struct devfreq_passive_data *passive_data;
struct devfreq *parent_devfreq;
struct exynos_bus *bus;
int ret, max_state;
unsigned long min_freq, max_freq;
@ -397,33 +435,9 @@ static int exynos_bus_probe(struct platform_device *pdev)
goto out;
passive:
/* Initialize the struct profile and governor data for passive device */
profile->target = exynos_bus_target;
profile->exit = exynos_bus_passive_exit;
/* Get the instance of parent devfreq device */
parent_devfreq = devfreq_get_devfreq_by_phandle(dev, 0);
if (IS_ERR(parent_devfreq)) {
ret = -EPROBE_DEFER;
ret = exynos_bus_profile_init_passive(bus, profile);
if (ret < 0)
goto err;
}
passive_data = devm_kzalloc(dev, sizeof(*passive_data), GFP_KERNEL);
if (!passive_data) {
ret = -ENOMEM;
goto err;
}
passive_data->parent = parent_devfreq;
/* Add devfreq device for exynos bus with passive governor */
bus->devfreq = devm_devfreq_add_device(dev, profile, DEVFREQ_GOV_PASSIVE,
passive_data);
if (IS_ERR(bus->devfreq)) {
dev_err(dev,
"failed to add devfreq dev with passive governor\n");
ret = PTR_ERR(bus->devfreq);
goto err;
}
out:
max_state = bus->devfreq->profile->max_state;