From 47a01ee9a6c39fe1f5b14f5d88f6591baeb03e95 Mon Sep 17 00:00:00 2001 From: Stephen Boyd Date: Sat, 25 Jun 2016 22:21:31 -0700 Subject: [PATCH] pinctrl: qcom: Clear all function selection bits The function selection bitfield is not always 3 bits wide. Sometimes it is 4 bits wide. Let's use the npins struct member to determine how many bits wide the function selection bitfield is so we clear the correct amount of bits in the register while remuxing the pins. Cc: Bjorn Andersson Signed-off-by: Stephen Boyd Signed-off-by: Linus Walleij --- drivers/pinctrl/qcom/pinctrl-msm.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/drivers/pinctrl/qcom/pinctrl-msm.c b/drivers/pinctrl/qcom/pinctrl-msm.c index 1a44e1d03390..51c42d746883 100644 --- a/drivers/pinctrl/qcom/pinctrl-msm.c +++ b/drivers/pinctrl/qcom/pinctrl-msm.c @@ -29,6 +29,7 @@ #include #include #include +#include #include "../core.h" #include "../pinconf.h" @@ -138,10 +139,11 @@ static int msm_pinmux_set_mux(struct pinctrl_dev *pctldev, struct msm_pinctrl *pctrl = pinctrl_dev_get_drvdata(pctldev); const struct msm_pingroup *g; unsigned long flags; - u32 val; + u32 val, mask; int i; g = &pctrl->soc->groups[group]; + mask = GENMASK(g->mux_bit + order_base_2(g->nfuncs) - 1, g->mux_bit); for (i = 0; i < g->nfuncs; i++) { if (g->funcs[i] == function) @@ -154,7 +156,7 @@ static int msm_pinmux_set_mux(struct pinctrl_dev *pctldev, spin_lock_irqsave(&pctrl->lock, flags); val = readl(pctrl->regs + g->ctl_reg); - val &= ~(0x7 << g->mux_bit); + val &= mask; val |= i << g->mux_bit; writel(val, pctrl->regs + g->ctl_reg); -- 2.20.1