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From: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
To: Kalle Valo <kvalo@kernel.org>,
	"David S. Miller" <davem@davemloft.net>,
	Eric Dumazet <edumazet@google.com>,
	Jakub Kicinski <kuba@kernel.org>, Paolo Abeni <pabeni@redhat.com>,
	Govind Singh <govinds@codeaurora.org>,
	ath10k@lists.infradead.org, linux-wireless@vger.kernel.org,
	netdev@vger.kernel.org, linux-kernel@vger.kernel.org
Cc: Bjorn Andersson <bjorn.andersson@linaro.org>,
	linux-arm-msm@vger.kernel.org,
	Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Subject: [PATCH] ath10k: do not enforce interrupt trigger type
Date: Fri, 13 May 2022 17:15:16 +0200	[thread overview]
Message-ID: <20220513151516.357549-1-krzysztof.kozlowski@linaro.org> (raw)

Interrupt line can be configured on different hardware in different way,
even inverted.  Therefore driver should not enforce specific trigger
type - edge rising - but instead rely on Devicetree to configure it.

All Qualcomm DTSI with WCN3990 define the interrupt type as level high,
so the mismatch between DTSI and driver causes rebind issues:

  $ echo 18800000.wifi > /sys/bus/platform/drivers/ath10k_snoc/unbind
  $ echo 18800000.wifi > /sys/bus/platform/drivers/ath10k_snoc/bind
  [   44.763114] irq: type mismatch, failed to map hwirq-446 for interrupt-controller@17a00000!
  [   44.763130] ath10k_snoc 18800000.wifi: error -ENXIO: IRQ index 0 not found
  [   44.763140] ath10k_snoc 18800000.wifi: failed to initialize resource: -6

Fixes: c963a683e701 ("ath10k: add resource init and deinit for WCN3990")
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>

---

Separate question is whether DTS has a proper interrupt type (level
high) configured...
---
 drivers/net/wireless/ath/ath10k/snoc.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/drivers/net/wireless/ath/ath10k/snoc.c b/drivers/net/wireless/ath/ath10k/snoc.c
index 607e8164bf98..5576ad9fd116 100644
--- a/drivers/net/wireless/ath/ath10k/snoc.c
+++ b/drivers/net/wireless/ath/ath10k/snoc.c
@@ -1249,13 +1249,12 @@ static void ath10k_snoc_init_napi(struct ath10k *ar)
 static int ath10k_snoc_request_irq(struct ath10k *ar)
 {
 	struct ath10k_snoc *ar_snoc = ath10k_snoc_priv(ar);
-	int irqflags = IRQF_TRIGGER_RISING;
 	int ret, id;
 
 	for (id = 0; id < CE_COUNT_MAX; id++) {
 		ret = request_irq(ar_snoc->ce_irqs[id].irq_line,
-				  ath10k_snoc_per_engine_handler,
-				  irqflags, ce_name[id], ar);
+				  ath10k_snoc_per_engine_handler, 0,
+				  ce_name[id], ar);
 		if (ret) {
 			ath10k_err(ar,
 				   "failed to register IRQ handler for CE %d: %d\n",
-- 
2.32.0


WARNING: multiple messages have this Message-ID (diff)
From: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
To: Kalle Valo <kvalo@kernel.org>,
	"David S. Miller" <davem@davemloft.net>,
	Eric Dumazet <edumazet@google.com>,
	Jakub Kicinski <kuba@kernel.org>, Paolo Abeni <pabeni@redhat.com>,
	Govind Singh <govinds@codeaurora.org>,
	ath10k@lists.infradead.org, linux-wireless@vger.kernel.org,
	netdev@vger.kernel.org, linux-kernel@vger.kernel.org
Cc: Bjorn Andersson <bjorn.andersson@linaro.org>,
	linux-arm-msm@vger.kernel.org,
	Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Subject: [PATCH] ath10k: do not enforce interrupt trigger type
Date: Fri, 13 May 2022 17:15:16 +0200	[thread overview]
Message-ID: <20220513151516.357549-1-krzysztof.kozlowski@linaro.org> (raw)

Interrupt line can be configured on different hardware in different way,
even inverted.  Therefore driver should not enforce specific trigger
type - edge rising - but instead rely on Devicetree to configure it.

All Qualcomm DTSI with WCN3990 define the interrupt type as level high,
so the mismatch between DTSI and driver causes rebind issues:

  $ echo 18800000.wifi > /sys/bus/platform/drivers/ath10k_snoc/unbind
  $ echo 18800000.wifi > /sys/bus/platform/drivers/ath10k_snoc/bind
  [   44.763114] irq: type mismatch, failed to map hwirq-446 for interrupt-controller@17a00000!
  [   44.763130] ath10k_snoc 18800000.wifi: error -ENXIO: IRQ index 0 not found
  [   44.763140] ath10k_snoc 18800000.wifi: failed to initialize resource: -6

Fixes: c963a683e701 ("ath10k: add resource init and deinit for WCN3990")
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>

---

Separate question is whether DTS has a proper interrupt type (level
high) configured...
---
 drivers/net/wireless/ath/ath10k/snoc.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/drivers/net/wireless/ath/ath10k/snoc.c b/drivers/net/wireless/ath/ath10k/snoc.c
index 607e8164bf98..5576ad9fd116 100644
--- a/drivers/net/wireless/ath/ath10k/snoc.c
+++ b/drivers/net/wireless/ath/ath10k/snoc.c
@@ -1249,13 +1249,12 @@ static void ath10k_snoc_init_napi(struct ath10k *ar)
 static int ath10k_snoc_request_irq(struct ath10k *ar)
 {
 	struct ath10k_snoc *ar_snoc = ath10k_snoc_priv(ar);
-	int irqflags = IRQF_TRIGGER_RISING;
 	int ret, id;
 
 	for (id = 0; id < CE_COUNT_MAX; id++) {
 		ret = request_irq(ar_snoc->ce_irqs[id].irq_line,
-				  ath10k_snoc_per_engine_handler,
-				  irqflags, ce_name[id], ar);
+				  ath10k_snoc_per_engine_handler, 0,
+				  ce_name[id], ar);
 		if (ret) {
 			ath10k_err(ar,
 				   "failed to register IRQ handler for CE %d: %d\n",
-- 
2.32.0


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ath10k@lists.infradead.org
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             reply	other threads:[~2022-05-13 15:15 UTC|newest]

Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-05-13 15:15 Krzysztof Kozlowski [this message]
2022-05-13 15:15 ` [PATCH] ath10k: do not enforce interrupt trigger type Krzysztof Kozlowski
2022-05-13 15:57 ` Kalle Valo
2022-05-13 15:57   ` Kalle Valo
2022-05-14  5:05   ` Steev Klimaszewski
2022-05-14  5:05     ` Steev Klimaszewski
2022-05-14 18:09     ` Steev Klimaszewski
2022-05-14 18:09       ` Steev Klimaszewski
2022-05-14 19:32       ` Krzysztof Kozlowski
2022-05-14 19:32         ` Krzysztof Kozlowski
2022-05-18  7:18       ` Kalle Valo
2022-05-18  7:18         ` Kalle Valo
2022-05-14 19:32   ` Krzysztof Kozlowski
2022-05-14 19:32     ` Krzysztof Kozlowski
2022-05-22 12:22 ` Kalle Valo
2022-05-22 12:22   ` Kalle Valo

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