drm/amdgpu: fix Kconfig for ISP v2

Add new config option and set proper dependencies for ISP.

v2: add missed guards, drop separate Kconfig
Reviewed-by: Pratap Nirujogi <pratap.nirujogi@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: Pratap Nirujogi <pratap.nirujogi@amd.com>

drivers/gpu/drm/amd/amdgpu/Kconfig

@@ -71,6 +71,17 @@ config DRM_AMDGPU_USERPTR
 	  This option selects CONFIG_HMM and CONFIG_HMM_MIRROR if it
 	  isn't already selected to enabled full userptr support.
 
+config DRM_AMD_ISP
+	bool "Enable AMD Image Signal Processor IP support"
+	depends on DRM_AMDGPU
+	select MFD_CORE
+	select PM_GENERIC_DOMAINS if PM
+	help
+	Choose this option to enable ISP IP support for AMD SOCs.
+	This adds the ISP (Image Signal Processor) IP driver and wires
+	it up into the amdgpu driver.  It is required for cameras
+	on APUs which utilize mipi cameras.
+
 config DRM_AMDGPU_WERROR
 	bool "Force the compiler to throw an error instead of a warning when compiling"
 	depends on DRM_AMDGPU

drivers/gpu/drm/amd/amdgpu/Makefile

@@ -324,6 +324,8 @@ amdgpu-y += $(AMD_DISPLAY_FILES)
 endif
 
 # add isp block
+ifneq ($(CONFIG_DRM_AMD_ISP),)
 amdgpu-y += amdgpu_isp.o
+endif
 
 obj-$(CONFIG_DRM_AMDGPU)+= amdgpu.o

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

@@ -112,7 +112,9 @@
 #include "amdgpu_xcp.h"
 #include "amdgpu_seq64.h"
 #include "amdgpu_reg_state.h"
+#if defined(CONFIG_DRM_AMD_ISP)
 #include "amdgpu_isp.h"
+#endif
 
 #define MAX_GPU_INSTANCE		64
 
@@ -1048,8 +1050,10 @@ struct amdgpu_device {
 	/* display related functionality */
 	struct amdgpu_display_manager dm;
 
+#if defined(CONFIG_DRM_AMD_ISP)
 	/* isp */
 	struct amdgpu_isp		isp;
+#endif
 
 	/* mes */
 	bool                            enable_mes;

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

@@ -106,7 +106,9 @@
 #include "jpeg_v5_0_0.h"
 
 #include "amdgpu_vpe.h"
+#if defined(CONFIG_DRM_AMD_ISP)
 #include "amdgpu_isp.h"
+#endif
 
 #define FIRMWARE_IP_DISCOVERY "amdgpu/ip_discovery.bin"
 MODULE_FIRMWARE(FIRMWARE_IP_DISCOVERY);
@@ -713,10 +715,12 @@ static void amdgpu_discovery_read_from_harvest_table(struct amdgpu_device *adev,
 			adev->sdma.sdma_mask &=
 				~(1U << harvest_info->list[i].number_instance);
 			break;
+#if defined(CONFIG_DRM_AMD_ISP)
 		case ISP_HWID:
 			adev->isp.harvest_config |=
 				~(1U << harvest_info->list[i].number_instance);
 			break;
+#endif
 		default:
 			break;
 		}
@@ -2384,6 +2388,7 @@ static int amdgpu_discovery_set_umsch_mm_ip_blocks(struct amdgpu_device *adev)
 
 static int amdgpu_discovery_set_isp_ip_blocks(struct amdgpu_device *adev)
 {
+#if defined(CONFIG_DRM_AMD_ISP)
 	switch (amdgpu_ip_version(adev, ISP_HWIP, 0)) {
 	case IP_VERSION(4, 1, 0):
 	case IP_VERSION(4, 1, 1):
@@ -2392,6 +2397,7 @@ static int amdgpu_discovery_set_isp_ip_blocks(struct amdgpu_device *adev)
 	default:
 		break;
 	}
+#endif
 
 	return 0;
 }