o Enable GPIO device driver for i.MX6.

  It was originally written for i.MX5 and compatible with newer chip.
o Extend device tree information
o style(9) fixes

Discussed with:	ian

3 files changed, 14 insertions, 6 deletions

diff --git a/sys/arm/conf/IMX6 b/sys/arm/conf/IMX6
index 47819c4..50077a8 100644
--- a/sys/arm/conf/IMX6
+++ b/sys/arm/conf/IMX6
@@ -82,6 +82,9 @@ device  	miibus			# Required for ethernet
 device  	bpf			# Berkeley packet filter (required for DHCP)
 #device  	iomux			# IO Multiplexor
 
+# General-purpose input/output
+device  	gpio
+
 # Serial (COM) ports
 device  	uart			# Multi-uart driver
 
@@ -106,7 +109,7 @@ device  	u3g			# USB modems
 #device  	ukbd			# Allow keyboard like HIDs to control console
 #device  	ums			# USB mouse
 
-# USB Ethernet, requires miibus 	
+# USB Ethernet, requires miibus
 #device  	aue			# ADMtek USB Ethernet
 #device  	axe			# ASIX Electronics USB Ethernet
 #device  	cdce			# Generic USB over Ethernet
diff --git a/sys/arm/freescale/imx/files.imx6 b/sys/arm/freescale/imx/files.imx6
index be9b8a3..d48d557 100644
--- a/sys/arm/freescale/imx/files.imx6
+++ b/sys/arm/freescale/imx/files.imx6
@@ -26,6 +26,7 @@ arm/freescale/imx/imx6_mp.c		optional smp
 arm/freescale/imx/imx6_pl310.c		standard
 arm/freescale/imx/imx_machdep.c		standard
 arm/freescale/imx/imx_gpt.c		standard
+arm/freescale/imx/imx51_gpio.c		optional gpio
 
 #
 # Optional devices.
@@ -50,8 +51,6 @@ arm/freescale/imx/imx6_usbphy.c		optional ehci
 # Not ready yet...
 #
 #arm/freescale/imx/imx51_iomux.c  	optional iomux
-#arm/freescale/imx/imx51_gpio.c  	optional gpio
 #dev/ata/chipsets/ata-fsl.c  		optional imxata
 #arm/freescale/imx/i2c.c  		optional fsliic
 #arm/freescale/imx/imx51_ipuv3.c  	optional sc
-
diff --git a/sys/arm/freescale/imx/imx51_gpio.c b/sys/arm/freescale/imx/imx51_gpio.c
index 8c43527..95e24ca 100644
--- a/sys/arm/freescale/imx/imx51_gpio.c
+++ b/sys/arm/freescale/imx/imx51_gpio.c
@@ -102,6 +102,13 @@ struct imx51_gpio_softc {
 	struct gpio_pin		gpio_pins[NGPIO];
 };
 
+static struct ofw_compat_data compat_data[] = {
+	{"fsl,imx6q-gpio",  1},
+	{"fsl,imx53-gpio",  1},
+	{"fsl,imx51-gpio",  1},
+	{NULL,	            0}
+};
+
 static struct resource_spec imx_gpio_spec[] = {
 	{ SYS_RES_MEMORY,	0,	RF_ACTIVE },
 	{ SYS_RES_IRQ,		0,	RF_ACTIVE },
@@ -373,9 +380,8 @@ imx51_gpio_probe(device_t dev)
 	if (!ofw_bus_status_okay(dev))
 		return (ENXIO);
 
-	if (ofw_bus_is_compatible(dev, "fsl,imx51-gpio") ||
-	    ofw_bus_is_compatible(dev, "fsl,imx53-gpio")) {
-		device_set_desc(dev, "i.MX515 GPIO Controller");
+	if (ofw_bus_search_compatible(dev, compat_data)->ocd_data != 0) {
+		device_set_desc(dev, "Freescale i.MX GPIO Controller");
 		return (BUS_PROBE_DEFAULT);
 	}