From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mgamail.intel.com (mgamail.intel.com [134.134.136.126]) by gabe.freedesktop.org (Postfix) with ESMTPS id 9A19610E6EF for ; Thu, 21 Dec 2023 16:35:01 +0000 (UTC) From: Anshuman Gupta To: igt-dev@lists.freedesktop.org Subject: [PATCH i-g-t v4 2/4] lib/igt_pm: Add helper to get/set auto_suspenddelay_ms Date: Thu, 21 Dec 2023 22:03:36 +0530 Message-Id: <20231221163338.2157257-3-anshuman.gupta@intel.com> In-Reply-To: <20231221163338.2157257-1-anshuman.gupta@intel.com> References: <20231221163338.2157257-1-anshuman.gupta@intel.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: kamil.konieczny@intel.com, rodrigo.vivi@intel.com Errors-To: igt-dev-bounces@lists.freedesktop.org Sender: "igt-dev" List-ID: 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. Signed-off-by: Anshuman Gupta --- 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