forward port diag changes from whiterussian, add extra abstraction for the gpio stuff

SVN-Revision: 5478

1 files changed, 125 insertions, 0 deletions

diff --git a/package/broadcom-diag/src/diag.h b/package/broadcom-diag/src/diag.h
new file mode 100644
index 0000000..30791cf
--- /dev/null
+++ b/package/broadcom-diag/src/diag.h
@@ -0,0 +1,125 @@
+/*
+ * diag.h - GPIO interface driver for Broadcom boards
+ *
+ * Copyright (C) 2006 Mike Baker <mbm@openwrt.org>,
+ *                    Felix Fietkau <nbd@openwrt.org>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+ *
+ * $Id:$
+ */
+
+#define MODULE_NAME "diag"
+
+#define MAX_GPIO 8
+#define FLASH_TIME HZ/6
+
+enum polarity_t {
+	REVERSE = 0,
+	NORMAL = 1,
+};
+
+enum {
+	PROC_BUTTON,
+	PROC_LED,
+	PROC_MODEL,
+	PROC_GPIOMASK
+};
+
+struct prochandler_t {
+	int type;
+	void *ptr;
+};
+
+struct button_t {
+	struct prochandler_t proc;
+	char *name;
+	u32 gpio;
+	unsigned long seen;
+	u8 pressed;
+};
+
+struct led_t {
+	struct prochandler_t proc;
+	char *name;
+	u32 gpio;
+	u8 polarity;
+	u8 flash;
+	u8 state;
+};
+
+struct platform_t {
+	char *name;
+
+	struct button_t buttons[MAX_GPIO];
+	u32 button_mask;
+	u32 button_polarity;
+
+	struct led_t leds[MAX_GPIO];
+};
+
+struct event_t {
+	struct work_struct wq;
+	char buf[256];
+	char *argv[3];
+	char *envp[6];
+};
+
+extern char *nvram_get(char *str);
+
+static struct platform_t platform;
+
+/* buttons */
+
+static void register_buttons(struct button_t *b);
+static void unregister_buttons(struct button_t *b);
+
+static void hotplug_button(struct event_t *event);
+static irqreturn_t button_handler(int irq, void *dev_id, struct pt_regs *regs);
+
+/* leds */
+
+static void register_leds(struct led_t *l);
+static void unregister_leds(struct led_t *l);
+
+static void set_led_extif(struct led_t *led);
+static void led_flash(unsigned long dummy);
+
+/* 2.4 compatibility */
+#ifndef TIMER_INITIALIZER
+#define TIMER_INITIALIZER(_function, _expires, _data) \
+	{ \
+		/* _expires and _data currently unused */ \
+		function: _function \
+	}
+#endif
+
+static struct timer_list led_timer = TIMER_INITIALIZER(&led_flash, 0, 0);
+
+/* proc */
+
+static struct proc_dir_entry *diag, *leds;
+
+static ssize_t diag_proc_read(struct file *file, char *buf, size_t count, loff_t *ppos);
+static ssize_t diag_proc_write(struct file *file, const char *buf, size_t count, loff_t *ppos);
+
+static struct file_operations diag_proc_fops = {
+	read: diag_proc_read,
+	write: diag_proc_write
+};
+
+static struct prochandler_t proc_model = { .type = PROC_MODEL };
+static struct prochandler_t proc_gpiomask = { .type = PROC_GPIOMASK };
+