[PATCH i-g-t v5 2/4] lib/igt_pm: Add helper to get/set auto_suspenddelay_ms
Anshuman Gupta
anshuman.gupta at intel.com
Fri Jan 19 14:28:21 UTC 2024
Sometimes we want to test pm igt test with an explicit auto
suspend delay, therefore adding helpers to get/set the pci_dev
auto_suspenddelay_ms.
Reviewed-by: Rodrigo Vivi <rodrigo.vivi at intel.com>
Signed-off-by: Anshuman Gupta <anshuman.gupta at intel.com>
---
lib/igt_pm.c | 53 ++++++++++++++++++++++++++++++++++++++++------------
lib/igt_pm.h | 2 ++
2 files changed, 43 insertions(+), 12 deletions(-)
diff --git a/lib/igt_pm.c b/lib/igt_pm.c
index c2d98fceb..d436c2c50 100644
--- a/lib/igt_pm.c
+++ b/lib/igt_pm.c
@@ -1068,18 +1068,6 @@ static void igt_pm_write_power_attr(int fd, const char *val, int len)
igt_assert(strncmp(buf, val, len) == 0);
}
-static int igt_pm_get_autosuspend_delay(struct pci_device *pci_dev)
-{
- char delay_str[64];
- int delay, delay_fd;
-
- delay_fd = igt_pm_get_power_attr_fd(pci_dev, "autosuspend_delay_ms");
- if (igt_pm_read_power_attr(delay_fd, delay_str, 64, true))
- igt_assert(sscanf(delay_str, "%d", &delay) > 0);
-
- return delay;
-}
-
static void
igt_pm_setup_pci_dev_power_attrs(struct pci_device *pci_dev,
struct igt_pm_pci_dev_pwrattr *pwrattr, int delay_ms)
@@ -1165,6 +1153,47 @@ igt_pm_setup_pci_card_power_attrs(struct pci_device *pci_dev, bool save_attrs, i
pci_iterator_destroy(iter);
}
+/**
+ * igt_pm_get_autosuspend_delay:
+ * @pci_dev: pci_dev.
+ * Get pci_dev autosuspend delay value from pci sysfs "autosuspend_delay_ms".
+ *
+ * Returns:
+ * autosuspend_delay_ms.
+ */
+int igt_pm_get_autosuspend_delay(struct pci_device *pci_dev)
+{
+ char delay_str[64];
+ int delay, delay_fd;
+
+ delay_fd = igt_pm_get_power_attr_fd(pci_dev, "autosuspend_delay_ms");
+ if (igt_pm_read_power_attr(delay_fd, delay_str, 64, true))
+ igt_assert(sscanf(delay_str, "%d", &delay) > 0);
+
+ return delay;
+}
+
+/**
+ * igt_pm_set_autosuspend_delay:
+ * @pci_dev: pci_dev.
+ * @delay_ms: autosuspend delay in ms.
+ * Set pci_dev autosuspend delay value through pci sysfs "autosuspend_delay_ms".
+ */
+void igt_pm_set_autosuspend_delay(struct pci_device *pci_dev, int delay_ms)
+{
+ char delay_str[64];
+ int delay_fd;
+
+ delay_fd = igt_pm_get_power_attr_fd(pci_dev, "autosuspend_delay_ms");
+
+ if (delay_ms >= 0) {
+ int wc;
+
+ wc = snprintf(delay_str, 64, "%d\n", delay_ms);
+ igt_pm_write_power_attr(delay_fd, delay_str, wc);
+ }
+}
+
/**
* igt_pm_enable_pci_card_runtime_pm:
* @root: root port pci_dev.
diff --git a/lib/igt_pm.h b/lib/igt_pm.h
index 306a9eb46..8394315c6 100644
--- a/lib/igt_pm.h
+++ b/lib/igt_pm.h
@@ -77,6 +77,8 @@ int igt_pm_get_pcie_acpihp_slot(struct pci_device *pci_dev);
bool igt_pm_acpi_d3cold_supported(struct pci_device *pci_dev);
enum igt_acpi_d_state
igt_pm_get_acpi_real_d_state(struct pci_device *pci_dev);
+int igt_pm_get_autosuspend_delay(struct pci_device *pci_dev);
+void igt_pm_set_autosuspend_delay(struct pci_device *pci_dev, int delay_ms);
void igt_pm_enable_pci_card_runtime_pm(struct pci_device *root,
struct pci_device *i915);
void igt_pm_get_d3cold_allowed(const char *pci_slot_name, uint32_t *value);
--
2.25.1
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