diff options
| -rw-r--r-- | drivers/devfreq/event/exynos-ppmu.c | 60 | ||||
| -rw-r--r-- | include/linux/devfreq-event.h | 6 |
2 files changed, 47 insertions, 19 deletions
diff --git a/drivers/devfreq/event/exynos-ppmu.c b/drivers/devfreq/event/exynos-ppmu.c index 1756c6b5cb09..87b42055e6bc 100644 --- a/drivers/devfreq/event/exynos-ppmu.c +++ b/drivers/devfreq/event/exynos-ppmu.c @@ -164,9 +164,9 @@ static int exynos_ppmu_set_event(struct devfreq_event_dev *edev) if (ret < 0) return ret; - /* Set the event of Read/Write data count */ + /* Set the event of proper data type monitoring */ ret = regmap_write(info->regmap, PPMU_BEVTxSEL(id), - PPMU_RO_DATA_CNT | PPMU_WO_DATA_CNT); + edev->desc->event_type); if (ret < 0) return ret; @@ -378,23 +378,11 @@ static int exynos_ppmu_v2_set_event(struct devfreq_event_dev *edev) if (ret < 0) return ret; - /* Set the event of Read/Write data count */ - switch (id) { - case PPMU_PMNCNT0: - case PPMU_PMNCNT1: - case PPMU_PMNCNT2: - ret = regmap_write(info->regmap, PPMU_V2_CH_EVx_TYPE(id), - PPMU_V2_RO_DATA_CNT | PPMU_V2_WO_DATA_CNT); - if (ret < 0) - return ret; - break; - case PPMU_PMNCNT3: - ret = regmap_write(info->regmap, PPMU_V2_CH_EVx_TYPE(id), - PPMU_V2_EVT3_RW_DATA_CNT); - if (ret < 0) - return ret; - break; - } + /* Set the event of proper data type monitoring */ + ret = regmap_write(info->regmap, PPMU_V2_CH_EVx_TYPE(id), + edev->desc->event_type); + if (ret < 0) + return ret; /* Reset cycle counter/performance counter and enable PPMU */ ret = regmap_read(info->regmap, PPMU_V2_PMNC, &pmnc); @@ -510,6 +498,7 @@ static int of_get_devfreq_events(struct device_node *np, struct device_node *events_np, *node; int i, j, count; const struct of_device_id *of_id; + int ret; events_np = of_get_child_by_name(np, "events"); if (!events_np) { @@ -559,6 +548,39 @@ static int of_get_devfreq_events(struct device_node *np, desc[j].driver_data = info; of_property_read_string(node, "event-name", &desc[j].name); + ret = of_property_read_u32(node, "event-data-type", + &desc[j].event_type); + if (ret) { + /* Set the event of proper data type counting. + * Check if the data type has been defined in DT, + * use default if not. + */ + if (info->ppmu_type == EXYNOS_TYPE_PPMU_V2) { + struct devfreq_event_dev edev; + int id; + /* Not all registers take the same value for + * read+write data count. + */ + edev.desc = &desc[j]; + id = exynos_ppmu_find_ppmu_id(&edev); + + switch (id) { + case PPMU_PMNCNT0: + case PPMU_PMNCNT1: + case PPMU_PMNCNT2: + desc[j].event_type = PPMU_V2_RO_DATA_CNT + | PPMU_V2_WO_DATA_CNT; + break; + case PPMU_PMNCNT3: + desc[j].event_type = + PPMU_V2_EVT3_RW_DATA_CNT; + break; + } + } else { + desc[j].event_type = PPMU_RO_DATA_CNT | + PPMU_WO_DATA_CNT; + } + } j++; } diff --git a/include/linux/devfreq-event.h b/include/linux/devfreq-event.h index 29fc0dd735ae..f14f17f8cb7f 100644 --- a/include/linux/devfreq-event.h +++ b/include/linux/devfreq-event.h @@ -78,14 +78,20 @@ struct devfreq_event_ops { * struct devfreq_event_desc - the descriptor of devfreq-event device * * @name : the name of devfreq-event device. + * @event_type : the type of the event determined and used by driver * @driver_data : the private data for devfreq-event driver. * @ops : the operation to control devfreq-event device. * * Each devfreq-event device is described with a this structure. * This structure contains the various data for devfreq-event device. + * The event_type describes what is going to be counted in the register. + * It might choose to count e.g. read requests, write data in bytes, etc. + * The full supported list of types is present in specyfic header in: + * include/dt-bindings/pmu/. */ struct devfreq_event_desc { const char *name; + u32 event_type; void *driver_data; const struct devfreq_event_ops *ops; |