linux-kernel - [PATCH 2/6] drm/etnaviv: determine product, customer and eco id

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Date:   Thu,  2 Jan 2020 11:02:16 +0100
From:   Christian Gmeiner <christian.gmeiner@...il.com>
To:     linux-kernel@...r.kernel.org
Cc:     Christian Gmeiner <christian.gmeiner@...il.com>,
        Lucas Stach <l.stach@...gutronix.de>,
        Russell King <linux+etnaviv@...linux.org.uk>,
        David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>, etnaviv@...ts.freedesktop.org,
        dri-devel@...ts.freedesktop.org
Subject: [PATCH 2/6] drm/etnaviv: determine product, customer and eco id

They will be used for extended HWDB support. The eco id logic was taken
from galcore kernel driver sources.

Signed-off-by: Christian Gmeiner <christian.gmeiner@...il.com>
---
 drivers/gpu/drm/etnaviv/etnaviv_gpu.c | 17 +++++++++++++++++
 drivers/gpu/drm/etnaviv/etnaviv_gpu.h |  6 +++---
 2 files changed, 20 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/etnaviv/etnaviv_gpu.c b/drivers/gpu/drm/etnaviv/etnaviv_gpu.c
index d47d1a8e0219..253301be9e95 100644
--- a/drivers/gpu/drm/etnaviv/etnaviv_gpu.c
+++ b/drivers/gpu/drm/etnaviv/etnaviv_gpu.c
@@ -321,6 +321,18 @@ static void etnaviv_hw_specs(struct etnaviv_gpu *gpu)
 		gpu->identity.varyings_count -= 1;
 }
 
+static void etnaviv_hw_eco_id(struct etnaviv_gpu *gpu)
+{
+	const u32 chipDate = gpu_read(gpu, VIVS_HI_CHIP_DATE);
+	gpu->identity.eco_id = gpu_read(gpu, VIVS_HI_CHIP_ECO_ID);
+
+	if (etnaviv_is_model_rev(gpu, GC1000, 0x5037) && (chipDate == 0x20120617))
+		gpu->identity.eco_id = 1;
+
+	if (etnaviv_is_model_rev(gpu, GC320, 0x5303) && (chipDate == 0x20140511))
+		gpu->identity.eco_id = 1;
+}
+
 static void etnaviv_hw_identify(struct etnaviv_gpu *gpu)
 {
 	u32 chipIdentity;
@@ -362,6 +374,8 @@ static void etnaviv_hw_identify(struct etnaviv_gpu *gpu)
 			}
 		}
 
+		gpu->identity.product_id = gpu_read(gpu, VIVS_HI_CHIP_PRODUCT_ID);
+
 		/*
 		 * NXP likes to call the GPU on the i.MX6QP GC2000+, but in
 		 * reality it's just a re-branded GC3000. We can identify this
@@ -375,6 +389,9 @@ static void etnaviv_hw_identify(struct etnaviv_gpu *gpu)
 		}
 	}
 
+	etnaviv_hw_eco_id(gpu);
+	gpu->identity.customer_id = gpu_read(gpu, VIVS_HI_CHIP_CUSTOMER_ID);
+
 	dev_info(gpu->dev, "model: GC%x, revision: %x\n",
 		 gpu->identity.model, gpu->identity.revision);
 
diff --git a/drivers/gpu/drm/etnaviv/etnaviv_gpu.h b/drivers/gpu/drm/etnaviv/etnaviv_gpu.h
index 8f9bd4edc96a..68bd966e3916 100644
--- a/drivers/gpu/drm/etnaviv/etnaviv_gpu.h
+++ b/drivers/gpu/drm/etnaviv/etnaviv_gpu.h
@@ -15,11 +15,11 @@ struct etnaviv_gem_submit;
 struct etnaviv_vram_mapping;
 
 struct etnaviv_chip_identity {
-	/* Chip model. */
 	u32 model;
-
-	/* Revision value.*/
 	u32 revision;
+	u32 product_id;
+	u32 customer_id;
+	u32 eco_id;
 
 	/* Supported feature fields. */
 	u32 features;
-- 
2.24.1