From 7ab34b89649a41b96661ec234ddd7dd6167ab7af Mon Sep 17 00:00:00 2001
From: markus <markus@3c298f89-4303-0410-b956-a3cf2f4a3e73>
Date: Tue, 27 Jan 2009 14:02:38 +0000
Subject: [PATCH] - added some extra flags to read more information - added
automagic device generation /dev/cs5535_gpioX
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@14220 3c298f89-4303-0410-b956-a3cf2f4a3e73
---
.../patches-2.6.28/924-cs5535_gpio.patch | 102 ++++++++++++++++++
1 file changed, 102 insertions(+)
create mode 100644 target/linux/generic-2.6/patches-2.6.28/924-cs5535_gpio.patch
diff --git a/target/linux/generic-2.6/patches-2.6.28/924-cs5535_gpio.patch b/target/linux/generic-2.6/patches-2.6.28/924-cs5535_gpio.patch
new file mode 100644
index 000000000..94b9e21c2
--- /dev/null
+++ b/target/linux/generic-2.6/patches-2.6.28/924-cs5535_gpio.patch
@@ -0,0 +1,102 @@
+--- ../../cs5535_gpio.c.orig 2009-01-07 10:16:12.000000000 +0100
++++ linux-2.6.28/drivers/char/cs5535_gpio.c 2009-01-07 10:13:54.000000000 +0100
+@@ -15,6 +15,7 @@
+ #include <linux/kernel.h>
+ #include <linux/init.h>
+ #include <linux/cdev.h>
++#include <linux/device.h>
+ #include <linux/ioport.h>
+ #include <linux/pci.h>
+ #include <linux/smp_lock.h>
+@@ -48,6 +49,7 @@
+ MODULE_DEVICE_TABLE(pci, divil_pci);
+
+ static struct cdev cs5535_gpio_cdev;
++static struct class *cs5535_gpio_class;
+
+ /* reserve 32 entries even though some aren't usable */
+ #define CS5535_GPIO_COUNT 32
+@@ -66,9 +68,14 @@
+ { 0x30, 0x00, '1', '0' }, /* GPIOx_READ_BACK / GPIOx_OUT_VAL */
+ { 0x20, 0x20, 'I', 'i' }, /* GPIOx_IN_EN */
+ { 0x04, 0x04, 'O', 'o' }, /* GPIOx_OUT_EN */
++ { 0x10, 0x10, 'A', 'a' }, /* GPIOx_OUT_AUX1_SEL */
++ { 0x14, 0x14, 'B', 'b' }, /* GPIOx_OUT_AUX2_SEL */
+ { 0x08, 0x08, 't', 'T' }, /* GPIOx_OUT_OD_EN */
+ { 0x18, 0x18, 'P', 'p' }, /* GPIOx_OUT_PU_EN */
+ { 0x1c, 0x1c, 'D', 'd' }, /* GPIOx_OUT_PD_EN */
++ { 0x24, 0x24, 'N', 'n' }, /* GPIOx_IN_INV_EN */
++ { 0x0c, 0x0c, 'X', 'x' }, /* GPIOx_OUT_INV_EN */
++ { 0x00, 0x00, 'H', 'L' }, /* GPIOx_OUT_VAL */
+ };
+
+
+@@ -177,7 +184,7 @@
+ {
+ dev_t dev_id;
+ u32 low, hi;
+- int retval;
++ int retval, i;
+
+ if (pci_dev_present(divil_pci) == 0) {
+ printk(KERN_WARNING NAME ": DIVIL not found\n");
+@@ -232,23 +239,54 @@
+ major = MAJOR(dev_id);
+ }
+
+- if (retval) {
+- release_region(gpio_base, CS5535_GPIO_SIZE);
+- return -1;
+- }
++ if (retval)
++ goto error;
+
+ printk(KERN_DEBUG NAME ": base=%#x mask=%#lx major=%d\n",
+ gpio_base, mask, major);
+
+ cdev_init(&cs5535_gpio_cdev, &cs5535_gpio_fops);
+- cdev_add(&cs5535_gpio_cdev, dev_id, CS5535_GPIO_COUNT);
++ retval = cdev_add(&cs5535_gpio_cdev, dev_id, CS5535_GPIO_COUNT);
++ if (retval) {
++ kobject_put(&cs5535_gpio_cdev.kobj);
++ goto error_region;
++ }
++
++ cs5535_gpio_class = class_create(THIS_MODULE, "cs5535_gpio");
++ if (IS_ERR(cs5535_gpio_class)) {
++ printk(KERN_ERR "Error creating cs5535_gpio class\n");
++ cdev_del(&cs5535_gpio_cdev);
++ retval = PTR_ERR(cs5535_gpio_class);
++ goto error_region;
++ }
++
++ for (i = 0; i < CS5535_GPIO_COUNT; i++) {
++ if (mask & (1<<i)) {
++ device_create(cs5535_gpio_class, NULL, MKDEV(major, i), NULL, "cs5535_gpio%d", i);
++ }
++ }
+
+ return 0;
++
++error_region:
++ unregister_chrdev_region(dev_id, CS5535_GPIO_COUNT);
++error:
++ release_region(gpio_base, CS5535_GPIO_SIZE);
++ return retval;
+ }
+
+ static void __exit cs5535_gpio_cleanup(void)
+ {
+ dev_t dev_id = MKDEV(major, 0);
++ int i;
++
++ for (i = 0; i < CS5535_GPIO_COUNT; i++) {
++ if (mask & (1<<i)) {
++ device_destroy(cs5535_gpio_class, MKDEV(major, i));
++ }
++ }
++
++ class_destroy(cs5535_gpio_class);
+
+ cdev_del(&cs5535_gpio_cdev);
+ unregister_chrdev_region(dev_id, CS5535_GPIO_COUNT);
--
2.20.1