From 5d0bafb492261acb93eaf89754d2fe12c31ebfe8 Mon Sep 17 00:00:00 2001
From: Kent Russell <kent.russell@amd.com>
Date: Mon, 13 Dec 2021 13:59:43 -0500
Subject: drm/amdgpu: Access the FRU on Aldebaran
Git-commit: 67416bf85345b6990fe2adc42ab082bfefc578bd
Patch-mainline: v5.17-rc1
References: jsc#PED-1166 jsc#PED-1168 jsc#PED-1170 jsc#PED-1218 jsc#PED-1220 jsc#PED-1222 jsc#PED-1223 jsc#PED-1225

This is supported, although the offset is different from VG20, so fix
that with a variable and enable getting the product name and serial
number from the FRU. Do this for all SKUs since all SKUs have the FRU

Signed-off-by: Kent Russell <kent.russell@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Acked-by: Patrik Jakobsson <pjakobsson@suse.de>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_fru_eeprom.c | 13 ++++++++++---
 1 file changed, 10 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_fru_eeprom.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_fru_eeprom.c
index fdca0a447e74..2a786e788627 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_fru_eeprom.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_fru_eeprom.c
@@ -56,6 +56,9 @@ static bool is_fru_eeprom_supported(struct amdgpu_device *adev)
 			return true;
 		else
 			return false;
+	case CHIP_ALDEBARAN:
+		/* All Aldebaran SKUs have the FRU */
+		return true;
 	default:
 		return false;
 	}
@@ -91,10 +94,14 @@ int amdgpu_fru_get_product_info(struct amdgpu_device *adev)
 	unsigned char buff[AMDGPU_PRODUCT_NAME_LEN+2];
 	u32 addrptr;
 	int size, len;
+	int offset = 2;
 
 	if (!is_fru_eeprom_supported(adev))
 		return 0;
 
+	if (adev->asic_type == CHIP_ALDEBARAN)
+		offset = 0;
+
 	/* If algo exists, it means that the i2c_adapter's initialized */
 	if (!adev->pm.smu_i2c.algo) {
 		DRM_WARN("Cannot access FRU, EEPROM accessor not initialized");
@@ -137,7 +144,7 @@ int amdgpu_fru_get_product_info(struct amdgpu_device *adev)
 		len = AMDGPU_PRODUCT_NAME_LEN - 1;
 	}
 	/* Start at 2 due to buff using fields 0 and 1 for the address */
-	memcpy(adev->product_name, &buff[2], len);
+	memcpy(adev->product_name, &buff[offset], len);
 	adev->product_name[len] = '\0';
 
 	addrptr += size + 1;
@@ -155,7 +162,7 @@ int amdgpu_fru_get_product_info(struct amdgpu_device *adev)
 		DRM_WARN("FRU Product Number is larger than 16 characters. This is likely a mistake");
 		len = sizeof(adev->product_number) - 1;
 	}
-	memcpy(adev->product_number, &buff[2], len);
+	memcpy(adev->product_number, &buff[offset], len);
 	adev->product_number[len] = '\0';
 
 	addrptr += size + 1;
@@ -182,7 +189,7 @@ int amdgpu_fru_get_product_info(struct amdgpu_device *adev)
 		DRM_WARN("FRU Serial Number is larger than 16 characters. This is likely a mistake");
 		len = sizeof(adev->serial) - 1;
 	}
-	memcpy(adev->serial, &buff[2], len);
+	memcpy(adev->serial, &buff[offset], len);
 	adev->serial[len] = '\0';
 
 	return 0;
-- 
2.38.1