drm/i915/DMC/CNL: Load DMC on CNL

This patch loads the DMC on CNL.The firmware version
is 1.04.

v2: (Rodrigo) Remove MODULE_FIRMWARE.

Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: Anusha Srivatsa <anusha.srivatsa@intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Reviewed-by: Animesh Manna <animesh.manna@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1497047175-27250-13-git-send-email-rodrigo.vivi@intel.com

drivers/gpu/drm/i915/i915_pci.c

@@ -445,6 +445,7 @@ static const struct intel_device_info intel_cannonlake_info = {
 	.platform = INTEL_CANNONLAKE,
 	.gen = 10,
 	.ddb_size = 1024,
+	.has_csr = 1,
 };
 
 /*

drivers/gpu/drm/i915/intel_csr.c

@@ -37,6 +37,9 @@
 #define I915_CSR_GLK "i915/glk_dmc_ver1_04.bin"
 #define GLK_CSR_VERSION_REQUIRED	CSR_VERSION(1, 4)
 
+#define I915_CSR_CNL "i915/cnl_dmc_ver1_04.bin"
+#define CNL_CSR_VERSION_REQUIRED	CSR_VERSION(1, 4)
+
 #define I915_CSR_KBL "i915/kbl_dmc_ver1_01.bin"
 MODULE_FIRMWARE(I915_CSR_KBL);
 #define KBL_CSR_VERSION_REQUIRED	CSR_VERSION(1, 1)
@@ -289,7 +292,9 @@ static uint32_t *parse_csr_fw(struct drm_i915_private *dev_priv,
 
 	csr->version = css_header->version;
 
-	if (IS_GEMINILAKE(dev_priv)) {
+	if (IS_CANNONLAKE(dev_priv)) {
+		required_version = CNL_CSR_VERSION_REQUIRED;
+	} else if (IS_GEMINILAKE(dev_priv)) {
 		required_version = GLK_CSR_VERSION_REQUIRED;
 	} else if (IS_KABYLAKE(dev_priv) || IS_COFFEELAKE(dev_priv)) {
 		required_version = KBL_CSR_VERSION_REQUIRED;
@@ -438,7 +443,9 @@ void intel_csr_ucode_init(struct drm_i915_private *dev_priv)
 	if (!HAS_CSR(dev_priv))
 		return;
 
-	if (IS_GEMINILAKE(dev_priv))
+	if (IS_CANNONLAKE(dev_priv))
+		csr->fw_path = I915_CSR_CNL;
+	else if (IS_GEMINILAKE(dev_priv))
 		csr->fw_path = I915_CSR_GLK;
 	else if (IS_KABYLAKE(dev_priv) || IS_COFFEELAKE(dev_priv))
 		csr->fw_path = I915_CSR_KBL;