diff options
| -rw-r--r-- | lib/igt_amd.c | 68 | ||||
| -rw-r--r-- | lib/igt_amd.h | 3 | ||||
| -rw-r--r-- | tests/amdgpu/amd_psr.c | 1 |
3 files changed, 72 insertions, 0 deletions
diff --git a/lib/igt_amd.c b/lib/igt_amd.c index 577a8612..59e503a2 100644 --- a/lib/igt_amd.c +++ b/lib/igt_amd.c @@ -251,6 +251,38 @@ bool igt_amd_is_tiled(uint64_t modifier) } /** + * @brief generic helper to check if the debugfs entry of given connector has the + * debugfs interface defined. + * @param drm_fd: DRM file descriptor + * @param connector_name: The connector's name, on which we're reading the status + * @param interface_name: The debugfs interface name to check + * @return true if <debugfs_root>/connector_name/interface_name exists and defined + * @return false otherwise + */ +static bool igt_amd_output_has_debugfs(int drm_fd, char *connector_name, const char *interface_name) +{ + int fd; + int res; + struct stat stat; + + fd = igt_debugfs_connector_dir(drm_fd, connector_name, O_RDONLY); + if (fd < 0) { + igt_info("output %s: debugfs not found\n", connector_name); + return false; + } + + res = fstatat(fd, interface_name, &stat, 0); + if (res != 0) { + igt_info("output %s: %s debugfs not supported\n", connector_name, interface_name); + close(fd); + return false; + } + + close(fd); + return true; +} + +/** * igt_amd_output_has_dsc: check if connector has dsc debugfs entry * @drm_fd: DRM file descriptor * @connector_name: The connector's name, on which we're reading the status @@ -1097,3 +1129,39 @@ bool igt_amd_psr_support_drv(int drm_fd, char *connector_name, enum psr_mode mod else return strstr(buf, "Driver support: yes [0x01]"); } + +/** + * igt_amd_output_has_psr_state: check if eDP connector has psr_state debugfs entry + * @drm_fd: DRM file descriptor + * @connector_name: The connector's name, on which we're reading the status + */ +bool igt_amd_output_has_psr_state(int drm_fd, char *connector_name) +{ + return igt_amd_output_has_debugfs(drm_fd, connector_name, DEBUGFS_EDP_PSR_STATE); +} + +/** + * @brief Read PSR State from debugfs interface + * @param drm_fd DRM file descriptor + * @param connector_name The connector's name, on which we're reading the status + * @return PSR state as integer + */ +int igt_amd_read_psr_state(int drm_fd, char *connector_name) +{ + char buf[4]; + int fd, ret; + + fd = igt_debugfs_connector_dir(drm_fd, connector_name, O_RDONLY); + if (fd < 0) { + igt_info("Couldn't open connector %s debugfs directory\n", connector_name); + return false; + } + + ret = igt_debugfs_simple_read(fd, DEBUGFS_EDP_PSR_STATE, buf, sizeof(buf)); + close(fd); + + igt_assert_f(ret >= 0, "Reading %s for connector %s failed.\n", + DEBUGFS_EDP_PSR_STATE, connector_name); + + return strtol(buf, NULL, 10); +} diff --git a/lib/igt_amd.h b/lib/igt_amd.h index 6e465817..f87c1991 100644 --- a/lib/igt_amd.h +++ b/lib/igt_amd.h @@ -47,6 +47,7 @@ #define DEBUGFS_EDP_ILR_SETTING "ilr_setting" #define MAX_SUPPORTED_ILR 8 #define DEBUGFS_EDP_PSR_CAP "psr_capability" +#define DEBUGFS_EDP_PSR_STATE "psr_state" enum amd_dsc_clock_force { DSC_AUTOMATIC = 0, @@ -143,5 +144,7 @@ bool igt_amd_output_has_ilr_setting(int drm_fd, char *connector_name); bool igt_amd_output_has_psr_cap(int drm_fd, char *connector_name); bool igt_amd_psr_support_sink(int drm_fd, char *connector_name, enum psr_mode mode); bool igt_amd_psr_support_drv(int drm_fd, char *connector_name, enum psr_mode mode); +bool igt_amd_output_has_psr_state(int drm_fd, char *connector_name); +int igt_amd_read_psr_state(int drm_fd, char *connector_name); #endif /* IGT_AMD_H */ diff --git a/tests/amdgpu/amd_psr.c b/tests/amdgpu/amd_psr.c index 732eab25..865511d0 100644 --- a/tests/amdgpu/amd_psr.c +++ b/tests/amdgpu/amd_psr.c @@ -24,6 +24,7 @@ #include "igt.h" #include "igt_core.h" #include "igt_kms.h" +#include "igt_amd.h" #include <stdint.h> #include <fcntl.h> #include <xf86drmMode.h> |