diff options
Diffstat (limited to 'target/linux/generic/patches-2.6.36/924-cs5535_gpio.patch')
| -rw-r--r-- | target/linux/generic/patches-2.6.36/924-cs5535_gpio.patch | 102 |
1 files changed, 102 insertions, 0 deletions
diff --git a/target/linux/generic/patches-2.6.36/924-cs5535_gpio.patch b/target/linux/generic/patches-2.6.36/924-cs5535_gpio.patch new file mode 100644 index 0000000000..4cb3031db5 --- /dev/null +++ b/target/linux/generic/patches-2.6.36/924-cs5535_gpio.patch @@ -0,0 +1,102 @@ +--- a/drivers/char/cs5535_gpio.c ++++ b/drivers/char/cs5535_gpio.c +@@ -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> + +@@ -48,6 +49,7 @@ static struct pci_device_id divil_pci[] + 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 @@ static struct gpio_regmap rm[] = + { 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 */ + }; + + +@@ -176,7 +183,7 @@ static int __init cs5535_gpio_init(void) + { + 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"); +@@ -231,23 +238,54 @@ static int __init cs5535_gpio_init(void) + 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); |