target/linux/generic/patches-2.6.37/924-cs5535_gpio.patch

   1 --- a/drivers/char/cs5535_gpio.c
   2 +++ b/drivers/char/cs5535_gpio.c
   3 @@ -15,6 +15,7 @@
   4  #include <linux/kernel.h>
   5  #include <linux/init.h>
   6  #include <linux/cdev.h>
   7 +#include <linux/device.h>
   8  #include <linux/ioport.h>
   9  #include <linux/pci.h>
  10
  11 @@ -48,6 +49,7 @@ static struct pci_device_id divil_pci[]
  12  MODULE_DEVICE_TABLE(pci, divil_pci);
  13
  14  static struct cdev cs5535_gpio_cdev;
  15 +static struct class *cs5535_gpio_class;
  16
  17  /* reserve 32 entries even though some aren't usable */
  18  #define CS5535_GPIO_COUNT      32
  19 @@ -66,9 +68,14 @@ static struct gpio_regmap rm[] =
  20         { 0x30, 0x00, '1', '0' },       /* GPIOx_READ_BACK / GPIOx_OUT_VAL */
  21         { 0x20, 0x20, 'I', 'i' },       /* GPIOx_IN_EN */
  22         { 0x04, 0x04, 'O', 'o' },       /* GPIOx_OUT_EN */
  23 +       { 0x10, 0x10, 'A', 'a' },       /* GPIOx_OUT_AUX1_SEL */
  24 +       { 0x14, 0x14, 'B', 'b' },       /* GPIOx_OUT_AUX2_SEL */
  25         { 0x08, 0x08, 't', 'T' },       /* GPIOx_OUT_OD_EN */
  26         { 0x18, 0x18, 'P', 'p' },       /* GPIOx_OUT_PU_EN */
  27         { 0x1c, 0x1c, 'D', 'd' },       /* GPIOx_OUT_PD_EN */
  28 +       { 0x24, 0x24, 'N', 'n' },       /* GPIOx_IN_INV_EN */
  29 +       { 0x0c, 0x0c, 'X', 'x' },       /* GPIOx_OUT_INV_EN */
  30 +       { 0x00, 0x00, 'H', 'L' },       /* GPIOx_OUT_VAL */
  31  };
  32
  33
  34 @@ -177,7 +184,7 @@ static int __init cs5535_gpio_init(void)
  35  {
  36         dev_t   dev_id;
  37         u32     low, hi;
  38 -       int     retval;
  39 +       int     retval, i;
  40
  41         if (pci_dev_present(divil_pci) == 0) {
  42                 printk(KERN_WARNING NAME ": DIVIL not found\n");
  43 @@ -232,23 +239,54 @@ static int __init cs5535_gpio_init(void)
  44                 major = MAJOR(dev_id);
  45         }
  46
  47 -       if (retval) {
  48 -               release_region(gpio_base, CS5535_GPIO_SIZE);
  49 -               return -1;
  50 -       }
  51 +       if (retval)
  52 +               goto error;
  53
  54         printk(KERN_DEBUG NAME ": base=%#x mask=%#lx major=%d\n",
  55                gpio_base, mask, major);
  56
  57         cdev_init(&cs5535_gpio_cdev, &cs5535_gpio_fops);
  58 -       cdev_add(&cs5535_gpio_cdev, dev_id, CS5535_GPIO_COUNT);
  59 +       retval = cdev_add(&cs5535_gpio_cdev, dev_id, CS5535_GPIO_COUNT);
  60 +       if (retval) {
  61 +               kobject_put(&cs5535_gpio_cdev.kobj);
  62 +               goto error_region;
  63 +       }
  64 +
  65 +       cs5535_gpio_class = class_create(THIS_MODULE, "cs5535_gpio");
  66 +       if (IS_ERR(cs5535_gpio_class)) {
  67 +               printk(KERN_ERR "Error creating cs5535_gpio class\n");
  68 +               cdev_del(&cs5535_gpio_cdev);
  69 +               retval = PTR_ERR(cs5535_gpio_class);
  70 +               goto error_region;
  71 +       }
  72 +
  73 +       for (i = 0; i < CS5535_GPIO_COUNT; i++) {
  74 +               if (mask & (1<<i)) {
  75 +                       device_create(cs5535_gpio_class, NULL, MKDEV(major, i), NULL, "cs5535_gpio%d", i);
  76 +               }
  77 +       }
  78
  79         return 0;
  80 +
  81 +error_region:
  82 +       unregister_chrdev_region(dev_id, CS5535_GPIO_COUNT);
  83 +error:
  84 +       release_region(gpio_base, CS5535_GPIO_SIZE);
  85 +       return retval;
  86  }
  87
  88  static void __exit cs5535_gpio_cleanup(void)
  89  {
  90         dev_t dev_id = MKDEV(major, 0);
  91 +       int i;
  92 +
  93 +       for (i = 0; i < CS5535_GPIO_COUNT; i++) {
  94 +               if (mask & (1<<i)) {
  95 +                       device_destroy(cs5535_gpio_class, MKDEV(major, i));
  96 +               }
  97 +       }
  98 +
  99 +       class_destroy(cs5535_gpio_class);
 100
 101         cdev_del(&cs5535_gpio_cdev);
 102         unregister_chrdev_region(dev_id, CS5535_GPIO_COUNT);