drm/i915/csr: restructure CSR firmware definition macros

Use uniform prefixes for firmware path, version and size. Unify
alignments. Order macro groups as in the if ladder using them. Add
platform specific max firmware size macros for all platforms for clarity
in the if ladder. Place the max firmware size macros in the platform
specific macro groups.

No functional changes.
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180927075311.5076-1-jani.nikula@intel.com

drivers/gpu/drm/i915/intel_csr.c

@@ -34,33 +34,35 @@
  * low-power state and comes back to normal.
  */
 
-#define I915_CSR_ICL "i915/icl_dmc_ver1_07.bin"
+#define ICL_CSR_PATH			"i915/icl_dmc_ver1_07.bin"
 #define ICL_CSR_VERSION_REQUIRED	CSR_VERSION(1, 7)
+#define ICL_CSR_MAX_FW_SIZE		0x6000
 
-#define I915_CSR_GLK "i915/glk_dmc_ver1_04.bin"
-MODULE_FIRMWARE(I915_CSR_GLK);
-#define GLK_CSR_VERSION_REQUIRED	CSR_VERSION(1, 4)
-
-#define I915_CSR_CNL "i915/cnl_dmc_ver1_07.bin"
-MODULE_FIRMWARE(I915_CSR_CNL);
+#define CNL_CSR_PATH			"i915/cnl_dmc_ver1_07.bin"
 #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 I915_CSR_KBL "i915/kbl_dmc_ver1_04.bin"
-MODULE_FIRMWARE(I915_CSR_KBL);
+#define GLK_CSR_PATH			"i915/glk_dmc_ver1_04.bin"
+#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_VERSION_REQUIRED	CSR_VERSION(1, 4)
+#define KBL_CSR_MAX_FW_SIZE		BXT_CSR_MAX_FW_SIZE
+MODULE_FIRMWARE(KBL_CSR_PATH);
 
-#define I915_CSR_SKL "i915/skl_dmc_ver1_27.bin"
-MODULE_FIRMWARE(I915_CSR_SKL);
+#define SKL_CSR_PATH			"i915/skl_dmc_ver1_27.bin"
 #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 I915_CSR_BXT "i915/bxt_dmc_ver1_07.bin"
-MODULE_FIRMWARE(I915_CSR_BXT);
+#define BXT_CSR_PATH			"i915/bxt_dmc_ver1_07.bin"
 #define BXT_CSR_VERSION_REQUIRED	CSR_VERSION(1, 7)
-
-
 #define BXT_CSR_MAX_FW_SIZE		0x3000
-#define GLK_CSR_MAX_FW_SIZE		0x4000
-#define ICL_CSR_MAX_FW_SIZE		0x6000
+MODULE_FIRMWARE(BXT_CSR_PATH);
+
 #define CSR_DEFAULT_FW_OFFSET		0xFFFFFFFF
 
 struct intel_css_header {
@@ -456,27 +458,27 @@ void intel_csr_ucode_init(struct drm_i915_private *dev_priv)
 	intel_display_power_get(dev_priv, POWER_DOMAIN_INIT);
 
 	if (IS_ICELAKE(dev_priv)) {
-		csr->fw_path = I915_CSR_ICL;
+		csr->fw_path = ICL_CSR_PATH;
 		csr->required_version = ICL_CSR_VERSION_REQUIRED;
 		csr->max_fw_size = ICL_CSR_MAX_FW_SIZE;
 	} else if (IS_CANNONLAKE(dev_priv)) {
-		csr->fw_path = I915_CSR_CNL;
+		csr->fw_path = CNL_CSR_PATH;
 		csr->required_version = CNL_CSR_VERSION_REQUIRED;
-		csr->max_fw_size = GLK_CSR_MAX_FW_SIZE;
+		csr->max_fw_size = CNL_CSR_MAX_FW_SIZE;
 	} else if (IS_GEMINILAKE(dev_priv)) {
-		csr->fw_path = I915_CSR_GLK;
+		csr->fw_path = GLK_CSR_PATH;
 		csr->required_version = GLK_CSR_VERSION_REQUIRED;
 		csr->max_fw_size = GLK_CSR_MAX_FW_SIZE;
 	} else if (IS_KABYLAKE(dev_priv) || IS_COFFEELAKE(dev_priv)) {
-		csr->fw_path = I915_CSR_KBL;
+		csr->fw_path = KBL_CSR_PATH;
 		csr->required_version = KBL_CSR_VERSION_REQUIRED;
-		csr->max_fw_size = BXT_CSR_MAX_FW_SIZE;
+		csr->max_fw_size = KBL_CSR_MAX_FW_SIZE;
 	} else if (IS_SKYLAKE(dev_priv)) {
-		csr->fw_path = I915_CSR_SKL;
+		csr->fw_path = SKL_CSR_PATH;
 		csr->required_version = SKL_CSR_VERSION_REQUIRED;
-		csr->max_fw_size = BXT_CSR_MAX_FW_SIZE;
+		csr->max_fw_size = SKL_CSR_MAX_FW_SIZE;
 	} else if (IS_BROXTON(dev_priv)) {
-		csr->fw_path = I915_CSR_BXT;
+		csr->fw_path = BXT_CSR_PATH;
 		csr->required_version = BXT_CSR_VERSION_REQUIRED;
 		csr->max_fw_size = BXT_CSR_MAX_FW_SIZE;
 	} else {