[PATCH i-g-t v2 2/5] lib/i915/fbc: add fbc frame size check helper functions
Vinod Govindapillai
vinod.govindapillai at intel.com
Mon Jun 10 11:59:38 UTC 2024
Add helper functions to check maximum plane size fbc can be
supported in a display version.
v2: Add function to get max plane size for FBC (Jonathan Cavitt)
Reviewed-by: Jonathan Cavitt <jonathan.cavitt at intel.com> #v1
Signed-off-by: Vinod Govindapillai <vinod.govindapillai at intel.com>
---
lib/i915/intel_fbc.c | 55 ++++++++++++++++++++++++++++++++++++++++++++
lib/i915/intel_fbc.h | 2 ++
2 files changed, 57 insertions(+)
diff --git a/lib/i915/intel_fbc.c b/lib/i915/intel_fbc.c
index 07ed7f469..2096bd996 100644
--- a/lib/i915/intel_fbc.c
+++ b/lib/i915/intel_fbc.c
@@ -99,3 +99,58 @@ bool intel_fbc_wait_until_enabled(int device, enum pipe pipe)
return enabled;
}
+
+/**
+ * intel_fbc_max_plane_size
+ *
+ * @fd: fd of the device
+ * @width: To get the max supported width
+ * @height: To get the max supported height
+ *
+ * Function to update maximum plane size supported by FBC per platform
+ *
+ * Returns:
+ * None
+ */
+void intel_fbc_max_plane_size(int fd, uint32_t *width, uint32_t *height)
+{
+ const uint32_t dev_id = intel_get_drm_devid(fd);
+ const struct intel_device_info *info = intel_get_device_info(dev_id);
+ int ver = info->graphics_ver;
+
+ if (ver >= 10) {
+ *width = 5120;
+ *height = 4096;
+ } else if (ver >= 8 || IS_HASWELL(fd)) {
+ *width = 4096;
+ *height = 4096;
+ } else if (IS_G4X(fd) || ver >= 5) {
+ *width = 4096;
+ *height = 2048;
+ } else {
+ *width = 2048;
+ *height = 1536;
+ }
+}
+
+
+/**
+ * intel_fbc_plane_size_supported
+ *
+ * @fd: fd of the device
+ * @width: width of the plane to be checked
+ * @height: height of the plane to be checked
+ *
+ * Checks if the plane size is supported for FBC
+ *
+ * Returns:
+ * true if plane size is within the range as per the FBC supported size restrictions per platform
+ */
+bool intel_fbc_plane_size_supported(int fd, uint32_t width, uint32_t height)
+{
+ unsigned int max_w, max_h;
+
+ intel_fbc_max_plane_size(fd, &max_w, &max_h);
+
+ return width <= max_w && height <= max_h;
+}
diff --git a/lib/i915/intel_fbc.h b/lib/i915/intel_fbc.h
index 995dc7f1e..5cca5dfd9 100644
--- a/lib/i915/intel_fbc.h
+++ b/lib/i915/intel_fbc.h
@@ -14,5 +14,7 @@
bool intel_fbc_supported_on_chipset(int device, enum pipe pipe);
bool intel_fbc_wait_until_enabled(int device, enum pipe pipe);
bool intel_fbc_is_enabled(int device, enum pipe pipe, int log_level);
+void intel_fbc_max_plane_size(int fd, uint32_t *width, uint32_t *height);
+bool intel_fbc_plane_size_supported(int device, uint32_t width, uint32_t height);
#endif
--
2.34.1
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