linux-kernel - [PATCH 2/9] clk: qcom: gdsc: Add configurable poll timeout

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Date:   Wed, 16 Nov 2022 12:47:09 +0200
From:   Abel Vesa <abel.vesa@...aro.org>
To:     Andy Gross <agross@...nel.org>,
        Bjorn Andersson <andersson@...nel.org>,
        Konrad Dybcio <konrad.dybcio@...aro.org>,
        Mike Turquette <mturquette@...libre.com>,
        Stephen Boyd <sboyd@...nel.org>, Rob Herring <robh@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
Cc:     Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        devicetree@...r.kernel.org, linux-arm-msm@...r.kernel.org,
        linux-clk@...r.kernel.org
Subject: [PATCH 2/9] clk: qcom: gdsc: Add configurable poll timeout

Depending on the platform, the poll timeout delay might be different,
so allow the platform specific drivers to specify their own values.

Signed-off-by: Abel Vesa <abel.vesa@...aro.org>
---
 drivers/clk/qcom/gdsc.c | 5 ++++-
 drivers/clk/qcom/gdsc.h | 1 +
 2 files changed, 5 insertions(+), 1 deletion(-)

diff --git a/drivers/clk/qcom/gdsc.c b/drivers/clk/qcom/gdsc.c
index 0f21a8a767ac..3753f3ef7241 100644
--- a/drivers/clk/qcom/gdsc.c
+++ b/drivers/clk/qcom/gdsc.c
@@ -107,7 +107,7 @@ static int gdsc_poll_status(struct gdsc *sc, enum gdsc_status status)
 	do {
 		if (gdsc_check_status(sc, status))
 			return 0;
-	} while (ktime_us_delta(ktime_get(), start) < TIMEOUT_US);
+	} while (ktime_us_delta(ktime_get(), start) < sc->poll_timeout);
 
 	if (gdsc_check_status(sc, status))
 		return 0;
@@ -454,6 +454,9 @@ static int gdsc_init(struct gdsc *sc)
 	if (ret)
 		goto err_disable_supply;
 
+	if (!sc->poll_timeout)
+		sc->poll_timeout = 500;
+
 	return 0;
 
 err_disable_supply:
diff --git a/drivers/clk/qcom/gdsc.h b/drivers/clk/qcom/gdsc.h
index 803512688336..9a1e1fb3d12f 100644
--- a/drivers/clk/qcom/gdsc.h
+++ b/drivers/clk/qcom/gdsc.h
@@ -36,6 +36,7 @@ struct gdsc {
 	struct generic_pm_domain	*parent;
 	struct regmap			*regmap;
 	unsigned int			gdscr;
+	unsigned int			poll_timeout;
 	unsigned int			collapse_ctrl;
 	unsigned int			collapse_mask;
 	unsigned int			gds_hw_ctrl;
-- 
2.34.1