The patch titled
c2port: add c2port support for Eurotech Duramar 2150
has been added to the -mm tree. Its filename is
c2port-add-c2port-support-for-eurotech-duramar-2150.patch
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------------------------------------------------------
Subject: c2port: add c2port support for Eurotech Duramar 2150
From: Rodolfo Giometti <giometti@xxxxxxxx>
Signed-off-by: Rodolfo Giometti <giometti@xxxxxxxx>
Cc: Greg KH <greg@xxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
drivers/misc/c2port/Kconfig | 11 +
drivers/misc/c2port/Makefile | 2
drivers/misc/c2port/c2port-duramar2150.c | 158 +++++++++++++++++++++
3 files changed, 171 insertions(+)
diff -puN drivers/misc/c2port/Kconfig~c2port-add-c2port-support-for-eurotech-duramar-2150 drivers/misc/c2port/Kconfig
--- a/drivers/misc/c2port/Kconfig~c2port-add-c2port-support-for-eurotech-duramar-2150
+++ a/drivers/misc/c2port/Kconfig
@@ -21,4 +21,15 @@ menuconfig C2PORT
if C2PORT
+config C2PORT_DURAMAR_2150
+ tristate "C2 port support for Eurotech's Duramar 2150 (EXPERIMENTAL)"
+ depends on X86 && C2PORT
+ default no
+ help
+ This option enables C2 support for the Eurotech's Duramar 2150
+ on board micro controller.
+
+ To compile this driver as a module, choose M here: the module will
+ be called c2port-duramar2150.
+
endif # C2PORT
diff -puN drivers/misc/c2port/Makefile~c2port-add-c2port-support-for-eurotech-duramar-2150 drivers/misc/c2port/Makefile
--- a/drivers/misc/c2port/Makefile~c2port-add-c2port-support-for-eurotech-duramar-2150
+++ a/drivers/misc/c2port/Makefile
@@ -1 +1,3 @@
obj-$(CONFIG_C2PORT) += core.o
+
+obj-$(CONFIG_C2PORT_DURAMAR_2150) += c2port-duramar2150.o
diff -puN /dev/null drivers/misc/c2port/c2port-duramar2150.c
--- /dev/null
+++ a/drivers/misc/c2port/c2port-duramar2150.c
@@ -0,0 +1,158 @@
+/*
+ * Silicon Labs C2 port Linux support for Eurotech Duramar 2150
+ *
+ * Copyright (c) 2008 Rodolfo Giometti <giometti@xxxxxxxx>
+ * Copyright (c) 2008 Eurotech S.p.A. <info@xxxxxxxxxxx>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published by
+ * the Free Software Foundation
+ */
+
+#include <linux/errno.h>
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/delay.h>
+#include <linux/io.h>
+#include <linux/c2port.h>
+
+#define DATA_PORT 0x325
+#define DIR_PORT 0x326
+#define C2D (1 << 0)
+#define C2CK (1 << 1)
+
+static DEFINE_MUTEX(update_lock);
+
+/*
+ * C2 port operations
+ */
+
+static void duramar2150_c2port_access(struct c2port_device *dev, int status)
+{
+ u8 v;
+
+ mutex_lock(&update_lock);
+
+ v = inb(DIR_PORT);
+
+ /* 0 = input, 1 = output */
+ if (status)
+ outb(v | (C2D | C2CK), DIR_PORT);
+ else
+ /* When access is "off" is important that both lines are set
+ * as inputs or hi-impedence */
+ outb(v & ~(C2D | C2CK), DIR_PORT);
+
+ mutex_unlock(&update_lock);
+}
+
+static void duramar2150_c2port_c2d_dir(struct c2port_device *dev, int dir)
+{
+ u8 v;
+
+ mutex_lock(&update_lock);
+
+ v = inb(DIR_PORT);
+
+ if (dir)
+ outb(v & ~C2D, DIR_PORT);
+ else
+ outb(v | C2D, DIR_PORT);
+
+ mutex_unlock(&update_lock);
+}
+
+static int duramar2150_c2port_c2d_get(struct c2port_device *dev)
+{
+ return inb(DATA_PORT) & C2D;
+}
+
+static void duramar2150_c2port_c2d_set(struct c2port_device *dev, int status)
+{
+ u8 v;
+
+ mutex_lock(&update_lock);
+
+ v = inb(DATA_PORT);
+
+ if (status)
+ outb(v | C2D, DATA_PORT);
+ else
+ outb(v & ~C2D, DATA_PORT);
+
+ mutex_unlock(&update_lock);
+}
+
+static void duramar2150_c2port_c2ck_set(struct c2port_device *dev, int status)
+{
+ u8 v;
+
+ mutex_lock(&update_lock);
+
+ v = inb(DATA_PORT);
+
+ if (status)
+ outb(v | C2CK, DATA_PORT);
+ else
+ outb(v & ~C2CK, DATA_PORT);
+
+ mutex_unlock(&update_lock);
+}
+
+static struct c2port_ops duramar2150_c2port_ops = {
+ .block_size = 512, /* bytes */
+ .blocks_num = 30, /* total flash size: 15360 bytes */
+
+ .access = duramar2150_c2port_access,
+ .c2d_dir = duramar2150_c2port_c2d_dir,
+ .c2d_get = duramar2150_c2port_c2d_get,
+ .c2d_set = duramar2150_c2port_c2d_set,
+ .c2ck_set = duramar2150_c2port_c2ck_set,
+};
+
+static struct c2port_device *duramar2150_c2port_dev;
+
+/*
+ * Module stuff
+ */
+
+static int __init duramar2150_c2port_init(void)
+{
+ struct resource *res;
+ int ret = 0;
+
+ res = request_region(0x325, 2, "c2port");
+ if (!res)
+ return -EBUSY;
+
+ duramar2150_c2port_dev = c2port_device_register("uc",
+ &duramar2150_c2port_ops, NULL);
+ if (!duramar2150_c2port_dev) {
+ ret = -ENODEV;
+ goto free_region;
+ }
+
+ return 0;
+
+free_region:
+ release_region(0x325, 2);
+ return ret;
+}
+
+static void __exit duramar2150_c2port_exit(void)
+{
+ /* Setup the GPIOs as input by default (access = 0) */
+ duramar2150_c2port_access(duramar2150_c2port_dev, 0);
+
+ c2port_device_unregister(duramar2150_c2port_dev);
+
+ release_region(0x325, 2);
+}
+
+module_init(duramar2150_c2port_init);
+module_exit(duramar2150_c2port_exit);
+
+MODULE_AUTHOR("Rodolfo Giometti <giometti@xxxxxxxx>");
+MODULE_DESCRIPTION("Silicon Labs C2 port Linux support for Duramar 2150");
+MODULE_LICENSE("GPL");
_
Patches currently in -mm which might be from giometti@xxxxxxxx are
add-c2-port-support.patch
c2port-add-c2port-support-for-eurotech-duramar-2150.patch
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