gflt200: exposed pon-pwr-en and pon-tx-dis through sysfs.
Also added the following links to the /sys/class/gpio/gpioN exports:
/sys/devices/platform/board/power-enable
/sys/devices/platform/board/tx-disable
Change-Id: Id87e610eb5b9d38a0f12db2239b503a7a7f69a32
diff --git a/arch/arm/mach-feroceon-kw2/board-gflt200.c b/arch/arm/mach-feroceon-kw2/board-gflt200.c
index 02d5131..b1f259d 100644
--- a/arch/arm/mach-feroceon-kw2/board-gflt200.c
+++ b/arch/arm/mach-feroceon-kw2/board-gflt200.c
@@ -16,6 +16,62 @@
#define GPIO_BOARD_VER_0 13
#define GPIO_BOARD_VER_1 15
#define GPIO_BOARD_VER_2 18
+#define GPIO_PON_PWR_EN 37
+#define GPIO_PON_TX_DIS 21
+
+struct board_gpio {
+ unsigned gpio;
+ const char *label;
+};
+
+static struct board_gpio board_gpios[] = {
+ {
+ .gpio = GPIO_PON_PWR_EN,
+ .label = "power-enable",
+ },
+ {
+ .gpio = GPIO_PON_TX_DIS,
+ .label = "tx-disable",
+ },
+};
+
+static int board_gpio_export(struct board_gpio *gpio, struct device *dev)
+{
+ int rc;
+
+ rc = gpio_request(gpio->gpio, gpio->label);
+ if (rc) {
+ pr_err(BOARD_NAME ": error %d requesting gpio %u (%s)\n", rc,
+ gpio->gpio, gpio->label);
+ goto exit;
+ }
+
+ /* this is needed to set gpiolib's out flag for the gpio */
+ rc = gpio_direction_output(gpio->gpio, gpio_get_value(gpio->gpio));
+ if (rc) {
+ pr_err(BOARD_NAME ": error %d setting gpio %u (%s) direction\n",
+ rc, gpio->gpio, gpio->label);
+ goto exit;
+ }
+
+ rc = gpio_export(gpio->gpio, false);
+ if (rc) {
+ pr_err(BOARD_NAME ": error %d exporting gpio %u (%s)\n", rc,
+ gpio->gpio, gpio->label);
+ goto exit;
+ }
+
+ rc = gpio_export_link(dev, gpio->label, gpio->gpio);
+ if (rc) {
+ pr_err(BOARD_NAME ": error %d linking gpio %u (%s)\n", rc,
+ gpio->gpio, gpio->label);
+ goto exit;
+ }
+
+ rc = 0;
+exit:
+ return rc;
+}
static int board_hw_ver(void)
{
@@ -123,6 +179,7 @@
int __init board_init(void)
{
+ int i;
int rc;
int hw_ver;
struct platform_device *pdev;
@@ -157,6 +214,10 @@
if (rc)
pr_err(BOARD_NAME ": error %d creating link 'board'\n", rc);
+ /* /sys/devices/platform/board/<gpio_name> */
+ for (i = 0; i < ARRAY_SIZE(board_gpios); i++)
+ board_gpio_export(&board_gpios[i], &pdev->dev);
+
/* /sys/devices/platform/board/hw_ver */
rc = device_create_file(&pdev->dev, &dev_attr_hw_ver);
if (rc)
