Re: [PATCH v1 5/6] drm/i915/xe2lpd: Load DMC

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On Thu, Feb 22, 2024 at 02:56:33PM +0200, Vinod Govindapillai wrote:
From: Balasubramani Vivekanandan <balasubramani.vivekanandan@xxxxxxxxx>

Load DMC for XE2LPD. The value 0x8000 is the maximum payload size for
any xe2lpd dmc firmware.

Signed-off-by: Balasubramani Vivekanandan <balasubramani.vivekanandan@xxxxxxxxx>
Signed-off-by: Dnyaneshwar Bhadane <dnyaneshwar.bhadane@xxxxxxxxx>
---
drivers/gpu/drm/i915/display/intel_dmc.c | 9 ++++++++-
1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/i915/display/intel_dmc.c b/drivers/gpu/drm/i915/display/intel_dmc.c
index 835781624482..54c5909de293 100644
--- a/drivers/gpu/drm/i915/display/intel_dmc.c
+++ b/drivers/gpu/drm/i915/display/intel_dmc.c
@@ -89,10 +89,14 @@ static struct intel_dmc *i915_to_dmc(struct drm_i915_private *i915)
	__stringify(major) "_"			\
	__stringify(minor) ".bin"

+#define XE2LPD_MAX_FW_SIZE		0x8000
#define XELPDP_DMC_MAX_FW_SIZE		0x7000
#define DISPLAY_VER13_DMC_MAX_FW_SIZE	0x20000
#define DISPLAY_VER12_DMC_MAX_FW_SIZE	ICL_DMC_MAX_FW_SIZE

+#define XE2LPD_DMC_PATH			DMC_PATH(xe2lpd)
+MODULE_FIRMWARE(XE2LPD_DMC_PATH);

looking at the mailing list I don't see any pull request to either
linux-firmware or drm-firmware with the DMC firmware. So if we had LNL
in CI, it would just fail. We need it at least in drm-firmware to be
able to test. We need it in linux-firmware to be able to merge.

Lucas De Marchi



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