linux-kernel - [PATCH 5/6] drm/etnaviv: update hwdb selection logic

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Message-Id: <20200102100230.420009-6-christian.gmeiner@gmail.com>
Date:   Thu,  2 Jan 2020 11:02:19 +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 5/6] drm/etnaviv: update hwdb selection logic

Take product id, customer id and eco id into account. If that
delivers no match try a search for model and revision.

Signed-off-by: Christian Gmeiner <christian.gmeiner@...il.com>
---
 drivers/gpu/drm/etnaviv/etnaviv_hwdb.c | 19 ++++++++++++++++++-
 1 file changed, 18 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/etnaviv/etnaviv_hwdb.c b/drivers/gpu/drm/etnaviv/etnaviv_hwdb.c
index eb0f3eb87ced..d1744f1b44b1 100644
--- a/drivers/gpu/drm/etnaviv/etnaviv_hwdb.c
+++ b/drivers/gpu/drm/etnaviv/etnaviv_hwdb.c
@@ -44,9 +44,26 @@ bool etnaviv_fill_identity_from_hwdb(struct etnaviv_gpu *gpu)
 	struct etnaviv_chip_identity *ident = &gpu->identity;
 	int i;
 
+	/* accurate match */
 	for (i = 0; i < ARRAY_SIZE(etnaviv_chip_identities); i++) {
 		if (etnaviv_chip_identities[i].model == ident->model &&
-		    etnaviv_chip_identities[i].revision == ident->revision) {
+		    etnaviv_chip_identities[i].revision == ident->revision &&
+		    etnaviv_chip_identities[i].product_id == ident->product_id &&
+		    etnaviv_chip_identities[i].customer_id == ident->customer_id &&
+		    etnaviv_chip_identities[i].eco_id == ident->eco_id) {
+			memcpy(ident, &etnaviv_chip_identities[i],
+			       sizeof(*ident));
+			return true;
+		}
+	}
+
+	/* match based only on model and revision */
+	for (i = 0; i < ARRAY_SIZE(etnaviv_chip_identities); i++) {
+		if (etnaviv_chip_identities[i].model == ident->model &&
+		    etnaviv_chip_identities[i].revision == ident->revision &&
+		    etnaviv_chip_identities[i].product_id == ~0U &&
+		    etnaviv_chip_identities[i].customer_id == ~0U &&
+		    etnaviv_chip_identities[i].eco_id == ~0U) {
 			memcpy(ident, &etnaviv_chip_identities[i],
 			       sizeof(*ident));
 			return true;
-- 
2.24.1