Although this abstraction removes the convenience of grepping
for the file name, it:
- makes addition easier.
- makes it easier to tweak global path when experiments are needed.
- get in sync with guc/huc, without getting overly abstracted.
- allows future junction with CSR_VERSION for simplicity.
- Enforces dmc file will never change this standard.

Cc: Fei Yang <fei.y...@intel.com>
Cc: Jani Nikula <jani.nik...@intel.com>
Cc: Lucas De Marchi <lucas.demar...@intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.v...@intel.com>
---
 drivers/gpu/drm/i915/display/intel_csr.c | 20 ++++++++++----------
 drivers/gpu/drm/i915/display/intel_csr.h |  6 ++++++
 2 files changed, 16 insertions(+), 10 deletions(-)

diff --git a/drivers/gpu/drm/i915/display/intel_csr.c 
b/drivers/gpu/drm/i915/display/intel_csr.c
index 26a3c6787e9e..ad68bcc611c4 100644
--- a/drivers/gpu/drm/i915/display/intel_csr.c
+++ b/drivers/gpu/drm/i915/display/intel_csr.c
@@ -40,48 +40,48 @@
 
 #define GEN12_CSR_MAX_FW_SIZE          ICL_CSR_MAX_FW_SIZE
 
-#define ADLS_CSR_PATH                  "i915/adls_dmc_ver2_01.bin"
+#define ADLS_CSR_PATH                  DMC_PATH(adls, 2, 01)
 #define ADLS_CSR_VERSION_REQUIRED      CSR_VERSION(2, 1)
 MODULE_FIRMWARE(ADLS_CSR_PATH);
 
-#define DG1_CSR_PATH                   "i915/dg1_dmc_ver2_02.bin"
+#define DG1_CSR_PATH                   DMC_PATH(dg1, 2, 02)
 #define DG1_CSR_VERSION_REQUIRED       CSR_VERSION(2, 2)
 MODULE_FIRMWARE(DG1_CSR_PATH);
 
-#define RKL_CSR_PATH                   "i915/rkl_dmc_ver2_02.bin"
+#define RKL_CSR_PATH                   DMC_PATH(rkl, 2, 02)
 #define RKL_CSR_VERSION_REQUIRED       CSR_VERSION(2, 2)
 MODULE_FIRMWARE(RKL_CSR_PATH);
 
-#define TGL_CSR_PATH                   "i915/tgl_dmc_ver2_08.bin"
+#define TGL_CSR_PATH                   DMC_PATH(tgl, 2, 08)
 #define TGL_CSR_VERSION_REQUIRED       CSR_VERSION(2, 8)
 MODULE_FIRMWARE(TGL_CSR_PATH);
 
-#define ICL_CSR_PATH                   "i915/icl_dmc_ver1_09.bin"
+#define ICL_CSR_PATH                   DMC_PATH(icl, 1, 09)
 #define ICL_CSR_VERSION_REQUIRED       CSR_VERSION(1, 9)
 #define ICL_CSR_MAX_FW_SIZE            0x6000
 MODULE_FIRMWARE(ICL_CSR_PATH);
 
-#define CNL_CSR_PATH                   "i915/cnl_dmc_ver1_07.bin"
+#define CNL_CSR_PATH                   DMC_PATH(cnl, 1, 07)
 #define CNL_CSR_VERSION_REQUIRED       CSR_VERSION(1, 7)
 #define CNL_CSR_MAX_FW_SIZE            GLK_CSR_MAX_FW_SIZE
 MODULE_FIRMWARE(CNL_CSR_PATH);
 
-#define GLK_CSR_PATH                   "i915/glk_dmc_ver1_04.bin"
+#define GLK_CSR_PATH                   DMC_PATH(glk, 1, 04)
 #define GLK_CSR_VERSION_REQUIRED       CSR_VERSION(1, 4)
 #define GLK_CSR_MAX_FW_SIZE            0x4000
 MODULE_FIRMWARE(GLK_CSR_PATH);
 
-#define KBL_CSR_PATH                   "i915/kbl_dmc_ver1_04.bin"
+#define KBL_CSR_PATH                   DMC_PATH(kbl, 1, 04)
 #define KBL_CSR_VERSION_REQUIRED       CSR_VERSION(1, 4)
 #define KBL_CSR_MAX_FW_SIZE            BXT_CSR_MAX_FW_SIZE
 MODULE_FIRMWARE(KBL_CSR_PATH);
 
-#define SKL_CSR_PATH                   "i915/skl_dmc_ver1_27.bin"
+#define SKL_CSR_PATH                   DMC_PATH(skl, 1, 27)
 #define SKL_CSR_VERSION_REQUIRED       CSR_VERSION(1, 27)
 #define SKL_CSR_MAX_FW_SIZE            BXT_CSR_MAX_FW_SIZE
 MODULE_FIRMWARE(SKL_CSR_PATH);
 
-#define BXT_CSR_PATH                   "i915/bxt_dmc_ver1_07.bin"
+#define BXT_CSR_PATH                   DMC_PATH(bxt, 1, 07)
 #define BXT_CSR_VERSION_REQUIRED       CSR_VERSION(1, 7)
 #define BXT_CSR_MAX_FW_SIZE            0x3000
 MODULE_FIRMWARE(BXT_CSR_PATH);
diff --git a/drivers/gpu/drm/i915/display/intel_csr.h 
b/drivers/gpu/drm/i915/display/intel_csr.h
index 03c64f8af7ab..fbfdaa3df07e 100644
--- a/drivers/gpu/drm/i915/display/intel_csr.h
+++ b/drivers/gpu/drm/i915/display/intel_csr.h
@@ -8,6 +8,12 @@
 
 struct drm_i915_private;
 
+#define DMC_PATH(platform, major, minor) \
+       "i915/"                          \
+       __stringify(platform) "_dmc_ver" \
+       __stringify(major) "_"           \
+       __stringify(minor) ".bin"
+
 #define CSR_VERSION(major, minor)      ((major) << 16 | (minor))
 #define CSR_VERSION_MAJOR(version)     ((version) >> 16)
 #define CSR_VERSION_MINOR(version)     ((version) & 0xffff)
-- 
2.30.2

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