[src/trunk]: src/sys/arch/arm/nvidia handle GPIO_ACTIVE_LOW flag

[jmcneill <jmcneill%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/97323f67213c
branches:  trunk
changeset: 812424:97323f67213c
user:      jmcneill <jmcneill%NetBSD.org@localhost>
date:      Mon Dec 14 20:57:34 2015 +0000

description:
handle GPIO_ACTIVE_LOW flag

diffstat:

 sys/arch/arm/nvidia/tegra_gpio.c |  25 ++++++++++++-------------
 1 files changed, 12 insertions(+), 13 deletions(-)

diffs (67 lines):

diff -r 62a7fcd5f608 -r 97323f67213c sys/arch/arm/nvidia/tegra_gpio.c
--- a/sys/arch/arm/nvidia/tegra_gpio.c  Mon Dec 14 20:01:17 2015 +0000
+++ b/sys/arch/arm/nvidia/tegra_gpio.c  Mon Dec 14 20:57:34 2015 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: tegra_gpio.c,v 1.4 2015/12/13 17:39:19 jmcneill Exp $ */
+/* $NetBSD: tegra_gpio.c,v 1.5 2015/12/14 20:57:34 jmcneill Exp $ */
 
 /*-
  * Copyright (c) 2015 Jared D. McNeill <jmcneill%invisible.ca@localhost>
@@ -27,7 +27,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: tegra_gpio.c,v 1.4 2015/12/13 17:39:19 jmcneill Exp $");
+__KERNEL_RCSID(0, "$NetBSD: tegra_gpio.c,v 1.5 2015/12/14 20:57:34 jmcneill Exp $");
 
 #include <sys/param.h>
 #include <sys/bus.h>
@@ -326,8 +326,14 @@
 tegra_gpio_fdt_read(device_t dev, void *priv)
 {
        struct tegra_gpio_pin *gpin = priv;
+       int val;
 
-       return tegra_gpio_read(gpin);
+       val = tegra_gpio_read(gpin);
+
+       if (gpin->pin_actlo)
+               val = !val;
+
+       return val;
 }
 
 static void
@@ -335,6 +341,9 @@
 {
        struct tegra_gpio_pin *gpin = priv;
 
+       if (gpin->pin_actlo)
+               val = !val;
+
        tegra_gpio_write(gpin, val);
 }
 
@@ -418,11 +427,6 @@
                ret = (v >> gpin->pin_no) & 1;
        }
 
-#if 0
-       if (gpin->pin_actlo)
-               ret = !ret;
-#endif
-
        return ret;
 }
 
@@ -431,10 +435,5 @@
 {
        KASSERT((gpin->pin_flags & GPIO_PIN_OUTPUT) != 0);
 
-#if 0
-       if (gpin->pin_actlo)
-               val = !val;
-#endif
-
        tegra_gpio_pin_write(&gpin->pin_bank, gpin->pin_no, val);
 }