Thread (9 messages) 9 messages, 4 authors, 2018-02-07

[PATCH] pinctrl: msm: allow the gpio base to be configurable

From: Bjorn Andersson <hidden>
Date: 2018-01-28 23:23:15
Also in: linux-arm-msm, linux-gpio

On Thu 25 Jan 13:20 PST 2018, Timur Tabi wrote:
Add an integer to the msm_pinctrl_soc_data struct that pinctrl-msm
client drivers can use to specify the gpio base.  This is useful
if the client driver wants to register multiple TLMM devices, because
each one needs a distinct base.

pinctrl-msm currently sets the base to 0, which ensures that GPIOs
of the first TLMM are numbered 0..n-1.  It could specify -1 as the
base, which would tell gpiolib to choose a unique base, but this
has the side-effect of choosing a non-zero base for all TLMMs:
What platform has multiple TLMMs?

[..]
quoted hunk ↗ jump to hunk
diff --git a/drivers/pinctrl/qcom/pinctrl-msm.c b/drivers/pinctrl/qcom/pinctrl-msm.c
index b7b6849625ec..4dc76e15bd14 100644
--- a/drivers/pinctrl/qcom/pinctrl-msm.c
+++ b/drivers/pinctrl/qcom/pinctrl-msm.c
@@ -901,7 +901,7 @@ static int msm_gpio_init(struct msm_pinctrl *pctrl)
 		return -EINVAL;
 
 	chip = &pctrl->chip;
-	chip->base = 0;
My bad, this should have been -1.

Regards,
Bjorn
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