Linux GPIO subsystem development
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From: Sneh Mankad <sneh.mankad@oss.qualcomm.com>
To: Bjorn Andersson <andersson@kernel.org>,
	Linus Walleij <linusw@kernel.org>,
	Yuanjie Yang <quic_yuanjiey@quicinc.com>
Cc: linux-arm-msm@vger.kernel.org, linux-gpio@vger.kernel.org,
	linux-kernel@vger.kernel.org,
	Sneh Mankad <sneh.mankad@oss.qualcomm.com>
Subject: [PATCH 1/3] pinctrl: qcom: Modify MSM_PULL_MASK to accurately represent PULL bits
Date: Fri, 29 May 2026 18:25:44 +0530	[thread overview]
Message-ID: <20260529-tlmm_test_changes-v1-1-88bfdccb4369@oss.qualcomm.com> (raw)
In-Reply-To: <20260529-tlmm_test_changes-v1-0-88bfdccb4369@oss.qualcomm.com>

MSM_PULL_MASK currently spans bits [2:0], but the GPIO_PULL field in the
GPIO_CFG register only occupies bits [1:0]. Bit 2 belongs to
FUNC_SEL.

MSM_PULL_MASK is used to isolate the GPIO_PULL bits before writing the
pull configuration (PULL_DOWN: 0x1, PULL_UP: 0x3) to the GPIO_CFG
register. Narrow it to bits [1:0] to prevent unintended modification of
the FUNC_SEL field.

This causes no functional change since the driver currently does not
modify the FUNC_SEL bit, but align the mask with hardware configuration
nonetheless.

Signed-off-by: Sneh Mankad <sneh.mankad@oss.qualcomm.com>
---
 drivers/pinctrl/qcom/tlmm-test.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/pinctrl/qcom/tlmm-test.c b/drivers/pinctrl/qcom/tlmm-test.c
index 7d7fff538755a2bcebf94dfb1ca00d4e9948c748..b655de5b4c5f08e7b138f0da24546274bc5fa93b 100644
--- a/drivers/pinctrl/qcom/tlmm-test.c
+++ b/drivers/pinctrl/qcom/tlmm-test.c
@@ -33,7 +33,7 @@
  * dynamically, rather then relying on e.g. Devicetree and phandles.
  */
 
-#define MSM_PULL_MASK		GENMASK(2, 0)
+#define MSM_PULL_MASK		GENMASK(1, 0)
 #define MSM_PULL_DOWN		1
 #define MSM_PULL_UP		3
 #define TLMM_REG_SIZE		0x1000

-- 
2.34.1


  reply	other threads:[~2026-05-29 12:56 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-05-29 12:55 [PATCH 0/3] pinctrl: qcom: Correct MSM_PULL_MASK and fix resolving TLMM register address Sneh Mankad
2026-05-29 12:55 ` Sneh Mankad [this message]
2026-06-03 13:53   ` [PATCH 1/3] pinctrl: qcom: Modify MSM_PULL_MASK to accurately represent PULL bits Konrad Dybcio
2026-06-08  3:32   ` Dmitry Baryshkov
2026-05-29 12:55 ` [PATCH 2/3] pinctrl: qcom: Fix resolving register base address from device node Sneh Mankad
2026-06-08  3:34   ` Dmitry Baryshkov
2026-05-29 12:55 ` [PATCH 3/3] pinctrl: qcom: Avoid assigning thread_op_remain in unthreaded test Sneh Mankad
2026-06-03 13:58   ` Konrad Dybcio
2026-06-10  6:16     ` Sneh Mankad
2026-06-15 14:38       ` Konrad Dybcio
2026-06-08 19:31 ` [PATCH 0/3] pinctrl: qcom: Correct MSM_PULL_MASK and fix resolving TLMM register address Linus Walleij

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