drm/amd/amdgpu: Add ISP support to amdgpu_discovery

ISP hw block is supported in some of the AMD GPU versions, add support
to discover ISP IP in amdgpu_discovery.

v2: squash in documentation update (Alex)
Reviewed-by: Mario Limonciello <mario.limonciello@amd.com>
Signed-off-by: Pratap Nirujogi <pratap.nirujogi@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/amdgpu/amdgpu.h

@@ -720,6 +720,7 @@ enum amd_hw_ip_block_type {
 	XGMI_HWIP,
 	DCI_HWIP,
 	PCIE_HWIP,
+	ISP_HWIP,
 	MAX_HWIP
 };
 

drivers/gpu/drm/amd/amdgpu/amdgpu_discovery.c

@@ -225,6 +225,7 @@ static int hw_id_map[MAX_HWIP] = {
 	[DCI_HWIP]	= DCI_HWID,
 	[PCIE_HWIP]	= PCIE_HWID,
 	[VPE_HWIP]	= VPE_HWID,
+	[ISP_HWIP]	= ISP_HWID,
 };
 
 static int amdgpu_discovery_read_binary_from_sysmem(struct amdgpu_device *adev, uint8_t *binary)

drivers/gpu/drm/amd/include/amd_shared.h

@@ -86,6 +86,7 @@ enum amd_apu_flags {
 * @AMD_IP_BLOCK_TYPE_JPEG: JPEG Engine
 * @AMD_IP_BLOCK_TYPE_VPE: Video Processing Engine
 * @AMD_IP_BLOCK_TYPE_UMSCH_MM: User Mode Schduler for Multimedia
+* @AMD_IP_BLOCK_TYPE_ISP: Image Signal Processor
 * @AMD_IP_BLOCK_TYPE_NUM: Total number of IP block types
 */
 enum amd_ip_block_type {
@@ -105,6 +106,7 @@ enum amd_ip_block_type {
 	AMD_IP_BLOCK_TYPE_JPEG,
 	AMD_IP_BLOCK_TYPE_VPE,
 	AMD_IP_BLOCK_TYPE_UMSCH_MM,
+	AMD_IP_BLOCK_TYPE_ISP,
 	AMD_IP_BLOCK_TYPE_NUM,
 };