Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 0909f0a3 authored by Oleg Perelet's avatar Oleg Perelet Committed by Kyle Yan
Browse files

msm: kgsl: Create sysfs entry to control GPU NAP state 



Create sysfs entry to have option to disable software clockgating
NAP state.

CRs-Fixed: 973565
Change-Id: I2376f10161040dbf426887ce146ac597f401153f
Signed-off-by: default avatarOleg Perelet <operelet@codeaurora.org>
parent f9c4cdc9

drivers/gpu/msm/kgsl_pwrctrl.c

+23 −1
Original line number Diff line number Diff line
@@ -32,6 +32,7 @@ 
#define KGSL_PWRFLAGS_AXI_ON   2

#define KGSL_PWRFLAGS_IRQ_ON   3

#define KGSL_PWRFLAGS_RETENTION_ON  4

#define KGSL_PWRFLAGS_NAP_OFF  5



#define UPDATE_BUSY_VAL		1000000
@@ -1053,6 +1054,21 @@ static ssize_t kgsl_pwrctrl_force_non_retention_on_store(struct device *dev, 
					KGSL_PWRFLAGS_RETENTION_ON);

}



static ssize_t kgsl_pwrctrl_force_no_nap_show(struct device *dev,

					struct device_attribute *attr,

					char *buf)

{

	return __force_on_show(dev, attr, buf, KGSL_PWRFLAGS_NAP_OFF);

}



static ssize_t kgsl_pwrctrl_force_no_nap_store(struct device *dev,

					struct device_attribute *attr,

					const char *buf, size_t count)

{

	return __force_on_store(dev, attr, buf, count,

					KGSL_PWRFLAGS_NAP_OFF);

}



static ssize_t kgsl_pwrctrl_bus_split_show(struct device *dev,

					struct device_attribute *attr,

					char *buf)
@@ -1217,6 +1233,9 @@ static DEVICE_ATTR(popp, 0644, kgsl_popp_show, kgsl_popp_store); 
static DEVICE_ATTR(force_non_retention_on, 0644,

	kgsl_pwrctrl_force_non_retention_on_show,

	kgsl_pwrctrl_force_non_retention_on_store);

static DEVICE_ATTR(force_no_nap, 0644,

	kgsl_pwrctrl_force_no_nap_show,

	kgsl_pwrctrl_force_no_nap_store);



static const struct device_attribute *pwrctrl_attr_list[] = {

	&dev_attr_gpuclk,
@@ -1235,6 +1254,7 @@ static const struct device_attribute *pwrctrl_attr_list[] = { 
	&dev_attr_force_bus_on,

	&dev_attr_force_rail_on,

	&dev_attr_force_non_retention_on,

	&dev_attr_force_no_nap,

	&dev_attr_bus_split,

	&dev_attr_default_pwrlevel,

	&dev_attr_popp,
@@ -2549,7 +2569,9 @@ void kgsl_active_count_put(struct kgsl_device *device) 
	BUG_ON(atomic_read(&device->active_cnt) == 0);



	if (atomic_dec_and_test(&device->active_cnt)) {

		if (device->state == KGSL_STATE_ACTIVE &&

		bool nap_on = !(device->pwrctrl.ctrl_flags &

			BIT(KGSL_PWRFLAGS_NAP_OFF));

		if (nap_on && device->state == KGSL_STATE_ACTIVE &&

			device->requested_state == KGSL_STATE_NONE) {

			kgsl_pwrctrl_request_state(device, KGSL_STATE_NAP);

			kgsl_schedule_work(&device->idle_check_ws);