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authorAndy Shevchenko <andriy.shevchenko@linux.intel.com>2019-11-25 20:15:34 +0300
committerAndy Shevchenko <andriy.shevchenko@linux.intel.com>2019-12-13 17:48:48 +0300
commit76347d7ad250b46c4dbeb0e1fe629ed3c72cf004 (patch)
tree8a58419cd092d96fc7e3f1e5a355e5af3d83d875 /drivers/pinctrl/intel
parenta718e68ede16957e091ee8f35f7b73765e51a092 (diff)
downloadlinux-76347d7ad250b46c4dbeb0e1fe629ed3c72cf004.tar.xz
pinctrl: lynxpoint: Assume 2 bits for mode selector
New generations can use 2 bits for mode selector. Update the code to support it. Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Diffstat (limited to 'drivers/pinctrl/intel')
-rw-r--r--drivers/pinctrl/intel/pinctrl-lynxpoint.c6
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/pinctrl/intel/pinctrl-lynxpoint.c b/drivers/pinctrl/intel/pinctrl-lynxpoint.c
index 17a7843c8dc9..4b2e3f298641 100644
--- a/drivers/pinctrl/intel/pinctrl-lynxpoint.c
+++ b/drivers/pinctrl/intel/pinctrl-lynxpoint.c
@@ -38,7 +38,9 @@
#define TRIG_SEL_BIT BIT(4) /* 0: Edge, 1: Level */
#define INT_INV_BIT BIT(3) /* Invert interrupt triggering */
#define DIR_BIT BIT(2) /* 0: Output, 1: Input */
-#define USE_SEL_BIT BIT(0) /* 0: Native, 1: GPIO */
+#define USE_SEL_MASK GENMASK(1, 0) /* 0: Native, 1: GPIO, ... */
+#define USE_SEL_NATIVE (0 << 0)
+#define USE_SEL_GPIO (1 << 0)
/* LP_CONFIG2 reg bits */
#define GPINDIS_BIT BIT(2) /* disable input sensing */
@@ -111,7 +113,7 @@ static int lp_gpio_request(struct gpio_chip *chip, unsigned offset)
return -EBUSY;
}
/* Fail if pin is in alternate function mode (not GPIO mode) */
- if (!(inl(reg) & USE_SEL_BIT))
+ if ((inl(reg) & USE_SEL_MASK) != USE_SEL_GPIO)
return -ENODEV;
/* enable input sensing */