greybus: gpb: Create a "GP Bridge" kernel module
This bundles together the existing GP Bridged PHY protocols that were
part of the Greybus core: USB, UART, SDIO, PWM, and GPIO. This is now a
stand-alone kernel module. More logic will be moving here in the future
to handle bridged devices.
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>
Reviewed-by: Alex Elder <elder@linaro.org>
diff --git a/drivers/staging/greybus/gpb.c b/drivers/staging/greybus/gpb.c
new file mode 100644
index 0000000..0c4f46c
--- /dev/null
+++ b/drivers/staging/greybus/gpb.c
@@ -0,0 +1,70 @@
+/*
+ * Greybus GP Bridge driver
+ *
+ * Copyright 2014 Google Inc.
+ * Copyright 2014 Linaro Ltd.
+ *
+ * Released under the GPLv2 only.
+ */
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#include <linux/types.h>
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/kernel.h>
+#include <linux/slab.h>
+#include <linux/device.h>
+
+#include "greybus.h"
+
+
+static int __init gpbridge_init(void)
+{
+ if (gb_gpio_protocol_init()) {
+ pr_err("error initializing gpio protocol\n");
+ goto error_gpio;
+ }
+ if (gb_pwm_protocol_init()) {
+ pr_err("error initializing pwm protocol\n");
+ goto error_pwm;
+ }
+ if (gb_uart_protocol_init()) {
+ pr_err("error initializing uart protocol\n");
+ goto error_uart;
+ }
+ if (gb_sdio_protocol_init()) {
+ pr_err("error initializing sdio protocol\n");
+ goto error_sdio;
+ }
+ if (gb_usb_protocol_init()) {
+ pr_err("error initializing usb protocol\n");
+ goto error_usb;
+ }
+ return 0;
+
+error_usb:
+ gb_sdio_protocol_exit();
+error_sdio:
+ gb_uart_protocol_exit();
+error_uart:
+ gb_pwm_protocol_exit();
+error_pwm:
+ gb_gpio_protocol_exit();
+error_gpio:
+ return -EPROTO;
+}
+
+static void __exit gpbridge_exit(void)
+{
+ gb_usb_protocol_exit();
+ gb_sdio_protocol_exit();
+ gb_uart_protocol_exit();
+ gb_pwm_protocol_exit();
+ gb_gpio_protocol_exit();
+}
+
+module_init(gpbridge_init);
+module_exit(gpbridge_exit);
+
+MODULE_LICENSE("GPL");