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Merge branches 'pm-devfreq' and 'pm-domains'

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* pm-devfreq:
  PM / devfreq: add tracing for scheduling work
  trace: events: add devfreq trace event file
  PM / devfreq: rk3399_dmc: Pass ODT and auto power down parameters to TF-A.
  PM / devfreq: rockchip-dfi: Move GRF definitions to a common place.
  PM / devfreq: exynos-bus: Suspend all devices on system shutdown
  PM / devfreq: Fix static checker warning in try_then_request_governor
  PM / devfreq: Restart previous governor if new governor fails to start
  PM / devfreq: tegra: remove unneeded variable
  PM / devfreq: rockchip-dfi: remove unneeded semicolon
  PM / devfreq: rk3399_dmc: remove unneeded semicolon
  PM / devfreq: consistent indentation
  PM / devfreq: fix missing check of return value in devfreq_add_device()
  PM / devfreq: fix mem leak in devfreq_add_device()
  PM / devfreq: Use of_node_name_eq for node name comparisons

* pm-domains:
  PM / Domains: Allow to attach a CPU via genpd_dev_pm_attach_by_id|name()
  PM / Domains: Search for the CPU device outside the genpd lock
  PM / Domains: Drop unused in-parameter to some genpd functions
  PM / Domains: Use the base device for driver_deferred_probe_check_state()
  PM / Domains: Enable genpd_dev_pm_attach_by_id|name() for single PM domain
  PM / Domains: Allow OF lookup for multi PM domain case from ->attach_dev()
  PM / Domains: Don't kfree() the virtual device in the error path
  PM / Domains: remove unnecessary unlikely()
This commit is contained in:
Rafael J. Wysocki 2019-05-06 10:55:49 +02:00
commit e07095c9bb
13 changed files with 256 additions and 102 deletions
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1
MAINTAINERS
View file

@ -4553,6 +4553,7 @@ S: Maintained
F: drivers/devfreq/
F: include/linux/devfreq.h
F: Documentation/devicetree/bindings/devfreq/
F: include/trace/events/devfreq.h
DEVICE FREQUENCY EVENT (DEVFREQ-EVENT)
M: Chanwoo Choi <cw00.choi@samsung.com>

87
drivers/base/power/domain.c
View file

@ -393,11 +393,9 @@ int dev_pm_genpd_set_performance_state(struct device *dev, unsigned int state)
if (unlikely(!genpd->set_performance_state))
return -EINVAL;
if (unlikely(!dev->power.subsys_data ||
!dev->power.subsys_data->domain_data)) {
WARN_ON(1);
if (WARN_ON(!dev->power.subsys_data ||
!dev->power.subsys_data->domain_data))
return -EINVAL;
}
genpd_lock(genpd);
@ -1398,8 +1396,7 @@ EXPORT_SYMBOL_GPL(pm_genpd_syscore_poweron);
#endif /* CONFIG_PM_SLEEP */
static struct generic_pm_domain_data *genpd_alloc_dev_data(struct device *dev,
struct gpd_timing_data *td)
static struct generic_pm_domain_data *genpd_alloc_dev_data(struct device *dev)
{
struct generic_pm_domain_data *gpd_data;
int ret;
@ -1414,9 +1411,6 @@ static struct generic_pm_domain_data *genpd_alloc_dev_data(struct device *dev,
goto err_put;
}
if (td)
gpd_data->td = *td;
gpd_data->base.dev = dev;
gpd_data->td.constraint_changed = true;
gpd_data->td.effective_constraint_ns = PM_QOS_RESUME_LATENCY_NO_CONSTRAINT_NS;
@ -1456,8 +1450,8 @@ static void genpd_free_dev_data(struct device *dev,
dev_pm_put_subsys_data(dev);
}
static void __genpd_update_cpumask(struct generic_pm_domain *genpd,
int cpu, bool set, unsigned int depth)
static void genpd_update_cpumask(struct generic_pm_domain *genpd,
int cpu, bool set, unsigned int depth)
{
struct gpd_link *link;
@ -1468,7 +1462,7 @@ static void __genpd_update_cpumask(struct generic_pm_domain *genpd,
struct generic_pm_domain *master = link->master;
genpd_lock_nested(master, depth + 1);
__genpd_update_cpumask(master, cpu, set, depth + 1);
genpd_update_cpumask(master, cpu, set, depth + 1);
genpd_unlock(master);
}
@ -1478,36 +1472,35 @@ static void __genpd_update_cpumask(struct generic_pm_domain *genpd,
cpumask_clear_cpu(cpu, genpd->cpus);
}
static void genpd_update_cpumask(struct generic_pm_domain *genpd,
struct device *dev, bool set)
static void genpd_set_cpumask(struct generic_pm_domain *genpd, int cpu)
{
if (cpu >= 0)
genpd_update_cpumask(genpd, cpu, true, 0);
}
static void genpd_clear_cpumask(struct generic_pm_domain *genpd, int cpu)
{
if (cpu >= 0)
genpd_update_cpumask(genpd, cpu, false, 0);
}
static int genpd_get_cpu(struct generic_pm_domain *genpd, struct device *dev)
{
int cpu;
if (!genpd_is_cpu_domain(genpd))
return;
return -1;
for_each_possible_cpu(cpu) {
if (get_cpu_device(cpu) == dev) {
__genpd_update_cpumask(genpd, cpu, set, 0);
return;
}
if (get_cpu_device(cpu) == dev)
return cpu;
}
}
static void genpd_set_cpumask(struct generic_pm_domain *genpd,
struct device *dev)
{
genpd_update_cpumask(genpd, dev, true);
}
static void genpd_clear_cpumask(struct generic_pm_domain *genpd,
struct device *dev)
{
genpd_update_cpumask(genpd, dev, false);
return -1;
}
static int genpd_add_device(struct generic_pm_domain *genpd, struct device *dev,
struct gpd_timing_data *td)
struct device *base_dev)
{
struct generic_pm_domain_data *gpd_data;
int ret;
@ -1517,17 +1510,19 @@ static int genpd_add_device(struct generic_pm_domain *genpd, struct device *dev,
if (IS_ERR_OR_NULL(genpd) || IS_ERR_OR_NULL(dev))
return -EINVAL;
gpd_data = genpd_alloc_dev_data(dev, td);
gpd_data = genpd_alloc_dev_data(dev);
if (IS_ERR(gpd_data))
return PTR_ERR(gpd_data);
gpd_data->cpu = genpd_get_cpu(genpd, base_dev);
ret = genpd->attach_dev ? genpd->attach_dev(genpd, dev) : 0;
if (ret)
goto out;
genpd_lock(genpd);
genpd_set_cpumask(genpd, dev);
genpd_set_cpumask(genpd, gpd_data->cpu);
dev_pm_domain_set(dev, &genpd->domain);
genpd->device_count++;
@ -1555,7 +1550,7 @@ int pm_genpd_add_device(struct generic_pm_domain *genpd, struct device *dev)
int ret;
mutex_lock(&gpd_list_lock);
ret = genpd_add_device(genpd, dev, NULL);
ret = genpd_add_device(genpd, dev, dev);
mutex_unlock(&gpd_list_lock);
return ret;
@ -1585,7 +1580,7 @@ static int genpd_remove_device(struct generic_pm_domain *genpd,
genpd->device_count--;
genpd->max_off_time_changed = true;
genpd_clear_cpumask(genpd, dev);
genpd_clear_cpumask(genpd, gpd_data->cpu);
dev_pm_domain_set(dev, NULL);
list_del_init(&pdd->list_node);
@ -2261,7 +2256,7 @@ int of_genpd_add_device(struct of_phandle_args *genpdspec, struct device *dev)
goto out;
}
ret = genpd_add_device(genpd, dev, NULL);
ret = genpd_add_device(genpd, dev, dev);
out:
mutex_unlock(&gpd_list_lock);
@ -2345,6 +2340,7 @@ EXPORT_SYMBOL_GPL(of_genpd_remove_last);
static void genpd_release_dev(struct device *dev)
{
of_node_put(dev->of_node);
kfree(dev);
}
@ -2406,14 +2402,14 @@ static void genpd_dev_pm_sync(struct device *dev)
genpd_queue_power_off_work(pd);
}
static int __genpd_dev_pm_attach(struct device *dev, struct device_node *np,
static int __genpd_dev_pm_attach(struct device *dev, struct device *base_dev,
unsigned int index, bool power_on)
{
struct of_phandle_args pd_args;
struct generic_pm_domain *pd;
int ret;
ret = of_parse_phandle_with_args(np, "power-domains",
ret = of_parse_phandle_with_args(dev->of_node, "power-domains",
"#power-domain-cells", index, &pd_args);
if (ret < 0)
return ret;
@ -2425,12 +2421,12 @@ static int __genpd_dev_pm_attach(struct device *dev, struct device_node *np,
mutex_unlock(&gpd_list_lock);
dev_dbg(dev, "%s() failed to find PM domain: %ld\n",
__func__, PTR_ERR(pd));
return driver_deferred_probe_check_state(dev);
return driver_deferred_probe_check_state(base_dev);
}
dev_dbg(dev, "adding to PM domain %s\n", pd->name);
ret = genpd_add_device(pd, dev, NULL);
ret = genpd_add_device(pd, dev, base_dev);
mutex_unlock(&gpd_list_lock);
if (ret < 0) {
@ -2481,7 +2477,7 @@ int genpd_dev_pm_attach(struct device *dev)
"#power-domain-cells") != 1)
return 0;
return __genpd_dev_pm_attach(dev, dev->of_node, 0, true);
return __genpd_dev_pm_attach(dev, dev, 0, true);
}
EXPORT_SYMBOL_GPL(genpd_dev_pm_attach);
@ -2511,10 +2507,10 @@ struct device *genpd_dev_pm_attach_by_id(struct device *dev,
if (!dev->of_node)
return NULL;
/* Deal only with devices using multiple PM domains. */
/* Verify that the index is within a valid range. */
num_domains = of_count_phandle_with_args(dev->of_node, "power-domains",
"#power-domain-cells");
if (num_domains < 2 || index >= num_domains)
if (index >= num_domains)
return NULL;
/* Allocate and register device on the genpd bus. */
@ -2525,15 +2521,16 @@ struct device *genpd_dev_pm_attach_by_id(struct device *dev,
dev_set_name(virt_dev, "genpd:%u:%s", index, dev_name(dev));
virt_dev->bus = &genpd_bus_type;
virt_dev->release = genpd_release_dev;
virt_dev->of_node = of_node_get(dev->of_node);
ret = device_register(virt_dev);
if (ret) {
kfree(virt_dev);
put_device(virt_dev);
return ERR_PTR(ret);
}
/* Try to attach the device to the PM domain at the specified index. */
ret = __genpd_dev_pm_attach(virt_dev, dev->of_node, index, false);
ret = __genpd_dev_pm_attach(virt_dev, dev, index, false);
if (ret < 1) {
device_unregister(virt_dev);
return ret ? ERR_PTR(ret) : NULL;

2
drivers/devfreq/devfreq-event.c
View file

@ -240,7 +240,7 @@ struct devfreq_event_dev *devfreq_event_get_edev_by_phandle(struct device *dev,
}
list_for_each_entry(edev, &devfreq_event_list, node) {
if (!strcmp(edev->desc->name, node->name))
if (of_node_name_eq(node, edev->desc->name))
goto out;
}
edev = NULL;

90
drivers/devfreq/devfreq.c
View file

@ -29,6 +29,9 @@
#include <linux/of.h>
#include "governor.h"
#define CREATE_TRACE_POINTS
#include <trace/events/devfreq.h>
static struct class *devfreq_class;
/*
@ -228,7 +231,7 @@ static struct devfreq_governor *find_devfreq_governor(const char *name)
* if is not found. This can happen when both drivers (the governor driver
* and the driver that call devfreq_add_device) are built as modules.
* devfreq_list_lock should be held by the caller. Returns the matched
* governor's pointer.
* governor's pointer or an error pointer.
*/
static struct devfreq_governor *try_then_request_governor(const char *name)
{
@ -254,7 +257,7 @@ static struct devfreq_governor *try_then_request_governor(const char *name)
/* Restore previous state before return */
mutex_lock(&devfreq_list_lock);
if (err)
return NULL;
return ERR_PTR(err);
governor = find_devfreq_governor(name);
}
@ -394,6 +397,8 @@ static void devfreq_monitor(struct work_struct *work)
queue_delayed_work(devfreq_wq, &devfreq->work,
msecs_to_jiffies(devfreq->profile->polling_ms));
mutex_unlock(&devfreq->lock);
trace_devfreq_monitor(devfreq);
}
/**
@ -528,7 +533,7 @@ void devfreq_interval_update(struct devfreq *devfreq, unsigned int *delay)
mutex_lock(&devfreq->lock);
if (!devfreq->stop_polling)
queue_delayed_work(devfreq_wq, &devfreq->work,
msecs_to_jiffies(devfreq->profile->polling_ms));
msecs_to_jiffies(devfreq->profile->polling_ms));
}
out:
mutex_unlock(&devfreq->lock);
@ -537,7 +542,7 @@ EXPORT_SYMBOL(devfreq_interval_update);
/**
* devfreq_notifier_call() - Notify that the device frequency requirements
* has been changed out of devfreq framework.
* has been changed out of devfreq framework.
* @nb: the notifier_block (supposed to be devfreq->nb)
* @type: not used
* @devp: not used
@ -651,7 +656,7 @@ struct devfreq *devfreq_add_device(struct device *dev,
mutex_unlock(&devfreq->lock);
err = set_freq_table(devfreq);
if (err < 0)
goto err_out;
goto err_dev;
mutex_lock(&devfreq->lock);
}
@ -683,16 +688,27 @@ struct devfreq *devfreq_add_device(struct device *dev,
goto err_out;
}
devfreq->trans_table =
devm_kzalloc(&devfreq->dev,
array3_size(sizeof(unsigned int),
devfreq->profile->max_state,
devfreq->profile->max_state),
GFP_KERNEL);
devfreq->trans_table = devm_kzalloc(&devfreq->dev,
array3_size(sizeof(unsigned int),
devfreq->profile->max_state,
devfreq->profile->max_state),
GFP_KERNEL);
if (!devfreq->trans_table) {
mutex_unlock(&devfreq->lock);
err = -ENOMEM;
goto err_devfreq;
}
devfreq->time_in_state = devm_kcalloc(&devfreq->dev,
devfreq->profile->max_state,
sizeof(unsigned long),
GFP_KERNEL);
devfreq->profile->max_state,
sizeof(unsigned long),
GFP_KERNEL);
if (!devfreq->time_in_state) {
mutex_unlock(&devfreq->lock);
err = -ENOMEM;
goto err_devfreq;
}
devfreq->last_stat_updated = jiffies;
srcu_init_notifier_head(&devfreq->transition_notifier_list);
@ -726,7 +742,7 @@ struct devfreq *devfreq_add_device(struct device *dev,
err_init:
mutex_unlock(&devfreq_list_lock);
err_devfreq:
devfreq_remove_device(devfreq);
devfreq = NULL;
err_dev:
@ -1113,7 +1129,7 @@ static ssize_t governor_store(struct device *dev, struct device_attribute *attr,
struct devfreq *df = to_devfreq(dev);
int ret;
char str_governor[DEVFREQ_NAME_LEN + 1];
struct devfreq_governor *governor;
const struct devfreq_governor *governor, *prev_governor;
ret = sscanf(buf, "%" __stringify(DEVFREQ_NAME_LEN) "s", str_governor);
if (ret != 1)
@ -1142,12 +1158,24 @@ static ssize_t governor_store(struct device *dev, struct device_attribute *attr,
goto out;
}
}
prev_governor = df->governor;
df->governor = governor;
strncpy(df->governor_name, governor->name, DEVFREQ_NAME_LEN);
ret = df->governor->event_handler(df, DEVFREQ_GOV_START, NULL);
if (ret)
if (ret) {
dev_warn(dev, "%s: Governor %s not started(%d)\n",
__func__, df->governor->name, ret);
df->governor = prev_governor;
strncpy(df->governor_name, prev_governor->name,
DEVFREQ_NAME_LEN);
ret = df->governor->event_handler(df, DEVFREQ_GOV_START, NULL);
if (ret) {
dev_err(dev,
"%s: reverting to Governor %s failed (%d)\n",
__func__, df->governor_name, ret);
df->governor = NULL;
}
}
out:
mutex_unlock(&devfreq_list_lock);
@ -1172,7 +1200,7 @@ static ssize_t available_governors_show(struct device *d,
*/
if (df->governor->immutable) {
count = scnprintf(&buf[count], DEVFREQ_NAME_LEN,
"%s ", df->governor_name);
"%s ", df->governor_name);
/*
* The devfreq device shows the registered governor except for
* immutable governors such as passive governor .
@ -1485,8 +1513,8 @@ EXPORT_SYMBOL(devfreq_recommended_opp);
/**
* devfreq_register_opp_notifier() - Helper function to get devfreq notified
* for any changes in the OPP availability
* changes
* for any changes in the OPP availability
* changes
* @dev: The devfreq user device. (parent of devfreq)
* @devfreq: The devfreq object.
*/
@ -1498,8 +1526,8 @@ EXPORT_SYMBOL(devfreq_register_opp_notifier);
/**
* devfreq_unregister_opp_notifier() - Helper function to stop getting devfreq
* notified for any changes in the OPP
* availability changes anymore.
* notified for any changes in the OPP
* availability changes anymore.
* @dev: The devfreq user device. (parent of devfreq)
* @devfreq: The devfreq object.
*
@ -1518,8 +1546,8 @@ static void devm_devfreq_opp_release(struct device *dev, void *res)
}
/**
* devm_ devfreq_register_opp_notifier()
* - Resource-managed devfreq_register_opp_notifier()
* devm_devfreq_register_opp_notifier() - Resource-managed
* devfreq_register_opp_notifier()
* @dev: The devfreq user device. (parent of devfreq)
* @devfreq: The devfreq object.
*/
@ -1547,8 +1575,8 @@ int devm_devfreq_register_opp_notifier(struct device *dev,
EXPORT_SYMBOL(devm_devfreq_register_opp_notifier);
/**
* devm_devfreq_unregister_opp_notifier()
* - Resource-managed devfreq_unregister_opp_notifier()
* devm_devfreq_unregister_opp_notifier() - Resource-managed
* devfreq_unregister_opp_notifier()
* @dev: The devfreq user device. (parent of devfreq)
* @devfreq: The devfreq object.
*/
@ -1567,8 +1595,8 @@ EXPORT_SYMBOL(devm_devfreq_unregister_opp_notifier);
* @list: DEVFREQ_TRANSITION_NOTIFIER.
*/
int devfreq_register_notifier(struct devfreq *devfreq,
struct notifier_block *nb,
unsigned int list)
struct notifier_block *nb,
unsigned int list)
{
int ret = 0;
@ -1674,9 +1702,9 @@ EXPORT_SYMBOL(devm_devfreq_register_notifier);
* @list: DEVFREQ_TRANSITION_NOTIFIER.
*/
void devm_devfreq_unregister_notifier(struct device *dev,
struct devfreq *devfreq,
struct notifier_block *nb,
unsigned int list)
struct devfreq *devfreq,
struct notifier_block *nb,
unsigned int list)
{
WARN_ON(devres_release(dev, devm_devfreq_notifier_release,
devm_devfreq_dev_match, devfreq));

2
drivers/devfreq/event/exynos-ppmu.c
View file

@ -529,7 +529,7 @@ static int of_get_devfreq_events(struct device_node *np,
if (!ppmu_events[i].name)
continue;
if (!of_node_cmp(node->name, ppmu_events[i].name))
if (of_node_name_eq(node, ppmu_events[i].name))
break;
}

25
drivers/devfreq/event/rockchip-dfi.c
View file

@ -26,6 +26,8 @@
#include <linux/list.h>
#include <linux/of.h>
#include <soc/rockchip/rk3399_grf.h>
#define RK3399_DMC_NUM_CH 2
/* DDRMON_CTRL */
@ -43,18 +45,6 @@
#define DDRMON_CH1_COUNT_NUM 0x3c
#define DDRMON_CH1_DFI_ACCESS_NUM 0x40
/* pmu grf */
#define PMUGRF_OS_REG2 0x308
#define DDRTYPE_SHIFT 13
#define DDRTYPE_MASK 7
enum {
DDR3 = 3,
LPDDR3 = 6,
LPDDR4 = 7,
UNUSED = 0xFF
};
struct dmc_usage {
u32 access;
u32 total;
@ -83,16 +73,17 @@ static void rockchip_dfi_start_hardware_counter(struct devfreq_event_dev *edev)
u32 ddr_type;
/* get ddr type */
regmap_read(info->regmap_pmu, PMUGRF_OS_REG2, &val);
ddr_type = (val >> DDRTYPE_SHIFT) & DDRTYPE_MASK;
regmap_read(info->regmap_pmu, RK3399_PMUGRF_OS_REG2, &val);
ddr_type = (val >> RK3399_PMUGRF_DDRTYPE_SHIFT) &
RK3399_PMUGRF_DDRTYPE_MASK;
/* clear DDRMON_CTRL setting */
writel_relaxed(CLR_DDRMON_CTRL, dfi_regs + DDRMON_CTRL);
/* set ddr type to dfi */
if (ddr_type == LPDDR3)
if (ddr_type == RK3399_PMUGRF_DDRTYPE_LPDDR3)
writel_relaxed(LPDDR3_EN, dfi_regs + DDRMON_CTRL);
else if (ddr_type == LPDDR4)
else if (ddr_type == RK3399_PMUGRF_DDRTYPE_LPDDR4)
writel_relaxed(LPDDR4_EN, dfi_regs + DDRMON_CTRL);
/* enable count, use software mode */
@ -211,7 +202,7 @@ static int rockchip_dfi_probe(struct platform_device *pdev)
if (IS_ERR(data->clk)) {
dev_err(dev, "Cannot get the clk dmc_clk\n");
return PTR_ERR(data->clk);
};
}
/* try to find the optional reference to the pmu syscon */
node = of_parse_phandle(np, "rockchip,pmu", 0);

8
drivers/devfreq/exynos-bus.c
View file

@ -514,6 +514,13 @@ err:
return ret;
}
static void exynos_bus_shutdown(struct platform_device *pdev)
{
struct exynos_bus *bus = dev_get_drvdata(&pdev->dev);
devfreq_suspend_device(bus->devfreq);
}
#ifdef CONFIG_PM_SLEEP
static int exynos_bus_resume(struct device *dev)
{
@ -556,6 +563,7 @@ MODULE_DEVICE_TABLE(of, exynos_bus_of_match);
static struct platform_driver exynos_bus_platdrv = {
.probe = exynos_bus_probe,
.shutdown = exynos_bus_shutdown,
.driver = {
.name = "exynos-bus",
.pm = &exynos_bus_pm,

73
drivers/devfreq/rk3399_dmc.c
View file

@ -18,14 +18,17 @@
#include <linux/devfreq.h>
#include <linux/devfreq-event.h>
#include <linux/interrupt.h>
#include <linux/mfd/syscon.h>
#include <linux/module.h>
#include <linux/of.h>
#include <linux/platform_device.h>
#include <linux/pm_opp.h>
#include <linux/regmap.h>
#include <linux/regulator/consumer.h>
#include <linux/rwsem.h>
#include <linux/suspend.h>
#include <soc/rockchip/rk3399_grf.h>
#include <soc/rockchip/rockchip_sip.h>
struct dram_timing {
@ -69,8 +72,11 @@ struct rk3399_dmcfreq {
struct mutex lock;
struct dram_timing timing;
struct regulator *vdd_center;
struct regmap *regmap_pmu;
unsigned long rate, target_rate;
unsigned long volt, target_volt;
unsigned int odt_dis_freq;
int odt_pd_arg0, odt_pd_arg1;
};
static int rk3399_dmcfreq_target(struct device *dev, unsigned long *freq,
@ -80,6 +86,8 @@ static int rk3399_dmcfreq_target(struct device *dev, unsigned long *freq,
struct dev_pm_opp *opp;
unsigned long old_clk_rate = dmcfreq->rate;
unsigned long target_volt, target_rate;
struct arm_smccc_res res;
bool odt_enable = false;
int err;
opp = devfreq_recommended_opp(dev, freq, flags);
@ -95,6 +103,19 @@ static int rk3399_dmcfreq_target(struct device *dev, unsigned long *freq,
mutex_lock(&dmcfreq->lock);
if (target_rate >= dmcfreq->odt_dis_freq)
odt_enable = true;
/*
* This makes a SMC call to the TF-A to set the DDR PD (power-down)
* timings and to enable or disable the ODT (on-die termination)
* resistors.
*/
arm_smccc_smc(ROCKCHIP_SIP_DRAM_FREQ, dmcfreq->odt_pd_arg0,
dmcfreq->odt_pd_arg1,
ROCKCHIP_SIP_CONFIG_DRAM_SET_ODT_PD,
odt_enable, 0, 0, 0, &res);
/*
* If frequency scaling from low to high, adjust voltage first.
* If frequency scaling from high to low, adjust frequency first.
@ -294,11 +315,13 @@ static int rk3399_dmcfreq_probe(struct platform_device *pdev)
{
struct arm_smccc_res res;
struct device *dev = &pdev->dev;
struct device_node *np = pdev->dev.of_node;
struct device_node *np = pdev->dev.of_node, *node;
struct rk3399_dmcfreq *data;
int ret, index, size;
uint32_t *timing;
struct dev_pm_opp *opp;
u32 ddr_type;
u32 val;
data = devm_kzalloc(dev, sizeof(struct rk3399_dmcfreq), GFP_KERNEL);
if (!data)
@ -322,7 +345,7 @@ static int rk3399_dmcfreq_probe(struct platform_device *pdev)
dev_err(dev, "Cannot get the clk dmc_clk\n");
return PTR_ERR(data->dmc_clk);
};
}
data->edev = devfreq_event_get_edev_by_phandle(dev, 0);
if (IS_ERR(data->edev))
@ -354,10 +377,56 @@ static int rk3399_dmcfreq_probe(struct platform_device *pdev)
}
}
node = of_parse_phandle(np, "rockchip,pmu", 0);
if (node) {
data->regmap_pmu = syscon_node_to_regmap(node);
if (IS_ERR(data->regmap_pmu))
return PTR_ERR(data->regmap_pmu);
}
regmap_read(data->regmap_pmu, RK3399_PMUGRF_OS_REG2, &val);
ddr_type = (val >> RK3399_PMUGRF_DDRTYPE_SHIFT) &
RK3399_PMUGRF_DDRTYPE_MASK;
switch (ddr_type) {
case RK3399_PMUGRF_DDRTYPE_DDR3:
data->odt_dis_freq = data->timing.ddr3_odt_dis_freq;
break;
case RK3399_PMUGRF_DDRTYPE_LPDDR3:
data->odt_dis_freq = data->timing.lpddr3_odt_dis_freq;
break;
case RK3399_PMUGRF_DDRTYPE_LPDDR4:
data->odt_dis_freq = data->timing.lpddr4_odt_dis_freq;
break;
default:
return -EINVAL;
};
arm_smccc_smc(ROCKCHIP_SIP_DRAM_FREQ, 0, 0,
ROCKCHIP_SIP_CONFIG_DRAM_INIT,
0, 0, 0, 0, &res);
/*
* In TF-A there is a platform SIP call to set the PD (power-down)
* timings and to enable or disable the ODT (on-die termination).
* This call needs three arguments as follows:
*
* arg0:
* bit[0-7] : sr_idle
* bit[8-15] : sr_mc_gate_idle
* bit[16-31] : standby idle
* arg1:
* bit[0-11] : pd_idle
* bit[16-27] : srpd_lite_idle
* arg2:
* bit[0] : odt enable
*/
data->odt_pd_arg0 = (data->timing.sr_idle & 0xff) |
((data->timing.sr_mc_gate_idle & 0xff) << 8) |
((data->timing.standby_idle & 0xffff) << 16);
data->odt_pd_arg1 = (data->timing.pd_idle & 0xfff) |
((data->timing.srpd_lite_idle & 0xfff) << 16);
/*
* We add a devfreq driver to our parent since it has a device tree node
* with operating points.

7
drivers/devfreq/tegra-devfreq.c
View file

@ -573,10 +573,7 @@ static int tegra_governor_get_target(struct devfreq *devfreq,
static int tegra_governor_event_handler(struct devfreq *devfreq,
unsigned int event, void *data)
{
struct tegra_devfreq *tegra;
int ret = 0;
tegra = dev_get_drvdata(devfreq->dev.parent);
struct tegra_devfreq *tegra = dev_get_drvdata(devfreq->dev.parent);
switch (event) {
case DEVFREQ_GOV_START:
@ -600,7 +597,7 @@ static int tegra_governor_event_handler(struct devfreq *devfreq,
break;
}
return ret;
return 0;
}
static struct devfreq_governor tegra_devfreq_governor = {

1
include/linux/pm_domain.h
View file

@ -175,6 +175,7 @@ struct generic_pm_domain_data {
struct pm_domain_data base;
struct gpd_timing_data td;
struct notifier_block nb;
int cpu;
unsigned int performance_state;
void *data;
};

21
include/soc/rockchip/rk3399_grf.h Normal file
View file

@ -0,0 +1,21 @@
/* SPDX-License-Identifier: GPL-2.0+ */
/*
* Rockchip General Register Files definitions
*
* Copyright (c) 2018, Collabora Ltd.
* Author: Enric Balletbo i Serra <enric.balletbo@collabora.com>
*/
#ifndef __SOC_RK3399_GRF_H
#define __SOC_RK3399_GRF_H
/* PMU GRF Registers */
#define RK3399_PMUGRF_OS_REG2 0x308
#define RK3399_PMUGRF_DDRTYPE_SHIFT 13
#define RK3399_PMUGRF_DDRTYPE_MASK 7
#define RK3399_PMUGRF_DDRTYPE_DDR3 3
#define RK3399_PMUGRF_DDRTYPE_LPDDR2 5
#define RK3399_PMUGRF_DDRTYPE_LPDDR3 6
#define RK3399_PMUGRF_DDRTYPE_LPDDR4 7
#endif

1
include/soc/rockchip/rockchip_sip.h
View file

@ -23,5 +23,6 @@
#define ROCKCHIP_SIP_CONFIG_DRAM_GET_RATE 0x05
#define ROCKCHIP_SIP_CONFIG_DRAM_CLR_IRQ 0x06
#define ROCKCHIP_SIP_CONFIG_DRAM_SET_PARAM 0x07
#define ROCKCHIP_SIP_CONFIG_DRAM_SET_ODT_PD 0x08
#endif

40
include/trace/events/devfreq.h Normal file
View file

@ -0,0 +1,40 @@
/* SPDX-License-Identifier: GPL-2.0 */
#undef TRACE_SYSTEM
#define TRACE_SYSTEM devfreq
#if !defined(_TRACE_DEVFREQ_H) || defined(TRACE_HEADER_MULTI_READ)
#define _TRACE_DEVFREQ_H
#include <linux/devfreq.h>
#include <linux/tracepoint.h>
TRACE_EVENT(devfreq_monitor,
TP_PROTO(struct devfreq *devfreq),
TP_ARGS(devfreq),
TP_STRUCT__entry(
__field(unsigned long, freq)
__field(unsigned long, busy_time)
__field(unsigned long, total_time)
__field(unsigned int, polling_ms)
__string(dev_name, dev_name(&devfreq->dev))
),
TP_fast_assign(
__entry->freq = devfreq->previous_freq;
__entry->busy_time = devfreq->last_status.busy_time;
__entry->total_time = devfreq->last_status.total_time;
__entry->polling_ms = devfreq->profile->polling_ms;
__assign_str(dev_name, dev_name(&devfreq->dev));
),
TP_printk("dev_name=%s freq=%lu polling_ms=%u load=%lu",
__get_str(dev_name), __entry->freq, __entry->polling_ms,
__entry->total_time == 0 ? 0 :
(100 * __entry->busy_time) / __entry->total_time)
);
#endif /* _TRACE_DEVFREQ_H */
/* This part must be outside protection */
#include <trace/define_trace.h>