[igt-dev] [PATCH i-g-t 1/6] lib/kms: Add helpers for VDSC YCbCr420 debugfs entry

Swati Sharma
2022-11-25T11:56:24Z

Helper functions are added for getting/setting VDSC YCbCr420 debugfs entry.

Signed-off-by: Swati Sharma <swati2.sharma@intel.com>
---
lib/igt_kms.c | 67 +++++++++++++++++++++++++++++++++++++++++++++++++++
lib/igt_kms.h | 7 ++++--
2 files changed, 72 insertions(+), 2 deletions(-)

diff --git a/lib/igt_kms.c b/lib/igt_kms.c
index b4a98ae17..c7135790b 100644
--- a/lib/igt_kms.c
+++ b/lib/igt_kms.c
@@ -5578,6 +5578,20 @@ bool check_dsc_debugfs(int drmfd, char *connector_name,
return strstr(buf, check_str);
}

+static
+bool check_dsc_ycbcr420_debugfs(int drmfd, char *connector_name,
+ const char *check_str)
+{
+ char file_name[128] = {0};
+ char buf[512];
+
+ sprintf(file_name, "%s/i915_dsc_ycbcr420", connector_name);
+
+ igt_debugfs_read(drmfd, file_name, buf);
+
+ return strstr(buf, check_str);
+}
+
static
int write_dsc_debugfs(int drmfd, char *connector_name,
const char *file_name,
@@ -5609,6 +5623,18 @@ bool igt_is_dsc_supported(int drmfd, char *connector_name)
return check_dsc_debugfs(drmfd, connector_name, "DSC_Sink_Support: yes");
}

+/*
+ * igt_is_dsc_ycbcr420_supported:
+ * @drmfd: A drm file descriptor
+ * @connector_name: Name of the libdrm connector we're going to use
+ *
+ * Returns: True if DSC YCbCr420 is supported for the given connector, false otherwise.
+ */
+bool igt_is_dsc_ycbcr420_supported(int drmfd, char *connector_name)
+{
+ return check_dsc_debugfs(drmfd, connector_name, "DSC_YCBCR420_Sink_Support: yes");
+}
+
/*
* igt_is_fec_supported:
* @drmfd: A drm file descriptor
@@ -5646,6 +5672,19 @@ bool igt_is_force_dsc_enabled(int drmfd, char *connector_name)
return check_dsc_debugfs(drmfd, connector_name, "Force_DSC_Enable: yes");
}

+/*
+ * igt_is_force_dsc_ycbcr420_enabled:
+ * @drmfd: A drm file descriptor
+ * @connector_name: Name of the libdrm connector we're going to use
+ *
+ * Returns: True if DSC YCbCr420 is force enabled (via debugfs) for the given connector,
+ * false otherwise.
+ */
+bool igt_is_force_dsc_ycbcr420_enabled(int drmfd, char *connector_name)
+{
+ return check_dsc_ycbcr420_debugfs(drmfd, connector_name, "Force_DSC_YCBCR420_Enable: yes");
+}
+
/*
* igt_force_dsc_enable:
* @drmfd: A drm file descriptor
@@ -5658,6 +5697,18 @@ int igt_force_dsc_enable(int drmfd, char *connector_name)
return write_dsc_debugfs(drmfd, connector_name, "i915_dsc_fec_support", "1");
}

+/*
+ * igt_force_dsc_ycbcr420_enable:
+ * @drmfd: A drm file descriptor
+ * @connector_name: Name of the libdrm connector we're going to use
+ *
+ * Returns: 1 on success or negative error code, in case of failure.
+ */
+int igt_force_dsc_ycbcr420_enable(int drmfd, char *connector_name)
+{
+ return write_dsc_debugfs(drmfd, connector_name, "i915_dsc_ycbcr420", "1");
+}
+
/*
* igt_force_dsc_enable_bpc:
* @drmfd: A drm file descriptor
@@ -5691,6 +5742,22 @@ int igt_get_dsc_debugfs_fd(int drmfd, char *connector_name)
return openat(igt_debugfs_dir(drmfd), file_name, O_WRONLY);
}

+/*
+ * igt_get_dsc_ycbcr420_debugfs_fd:
+ * @drmfd: A drm file descriptor
+ * @connector_name: Name of the libdrm connector we're going to use
+ *
+ * Returns: fd of the DSC YCbCr420 debugfs for the given connector, else returns -1.
+ */
+int igt_get_dsc_ycbcr420_debugfs_fd(int drmfd, char *connector_name)
+{
+ char file_name[128] = {0};
+
+ sprintf(file_name, "%s/i915_dsc_ycbcr420", connector_name);
+
+ return openat(igt_debugfs_dir(drmfd), file_name, O_WRONLY);
+}
+
/*
* igt_get_output_max_bpc:
* @drmfd: A drm file descriptor
diff --git a/lib/igt_kms.h b/lib/igt_kms.h
index 7a00d2045..ccd8adf2c 100644
--- a/lib/igt_kms.h
+++ b/lib/igt_kms.h
@@ -976,13 +976,16 @@ void igt_dump_crtcs_fd(int drmfd);
bool igt_override_all_active_output_modes_to_fit_bw(igt_display_t *display);

bool igt_is_dsc_supported(int drmfd, char *connector_name);
+bool igt_is_dsc_ycbcr420_supported(int drmfd, char *connector_name);
bool igt_is_fec_supported(int drmfd, char *connector_name);
bool igt_is_dsc_enabled(int drmfd, char *connector_name);
bool igt_is_force_dsc_enabled(int drmfd, char *connector_name);
+bool igt_is_force_dsc_ycbcr420_enabled(int drmfd, char *connector_name);
int igt_force_dsc_enable(int drmfd, char *connector_name);
-int igt_force_dsc_enable_bpc(int drmfd, char *connector_name,
- int bpc);
+int igt_force_dsc_enable_bpc(int drmfd, char *connector_name, int bpc);
+int igt_force_dsc_ycbcr420_enable(int drmfd, char *connector_name);
int igt_get_dsc_debugfs_fd(int drmfd, char *connector_name);
+int igt_get_dsc_ycbcr420_debugfs_fd(int drmfd, char *connector_name);

unsigned int igt_get_output_max_bpc(int drmfd, char *connector_name);
unsigned int igt_get_pipe_current_bpc(int drmfd, enum pipe pipe);
--
2.25.1