arch/arm/mach-pxa/asus730/a730_mmc.c

   1 /*
   2  * Based on arch/arm/mach-pxa/mainstone.h
   3  *
   4 */
   5
   6 #include <linux/config.h>
   7 #include <linux/init.h>
   8 #include <linux/platform_device.h>
   9 #include <linux/irq.h>
  10
  11 #include <asm/arch/mmc.h>
  12 #include <asm/hardware.h>
  13
  14 #include <asm/mach/arch.h>
  15 #include <asm/mach/map.h>
  16 #include <asm/mach-types.h>
  17
  18 #include <asm/arch/pxa-regs.h>
  19 #include <asm/arch/asus730-gpio.h>
  20
  21 static int a730_mci_init(struct device *dev, irqreturn_t (*a730_detect_int)(int, void *, struct pt_regs *), void *data)
  22 {
  23     int err;
  24         printk("%s\n", __FUNCTION__);
  25     /*
  26      * setup GPIO for PXA27x MMC controller
  27      */
  28
  29     pxa_gpio_mode(GPIO32_MMCCLK_MD);
  30     pxa_gpio_mode(GPIO92_MMCDAT0_MD);
  31     pxa_gpio_mode(GPIO109_MMCDAT1_MD);
  32     pxa_gpio_mode(GPIO110_MMCDAT2_MD);
  33     pxa_gpio_mode(GPIO111_MMCDAT3_MD);
  34     pxa_gpio_mode(GPIO112_MMCCMD_MD);
  35
  36     set_irq_type(A730_IRQ(SD_DETECT_N), IRQF_TRIGGET_RISING | IRQF_TRIGGER_FALLING);
  37     err = request_irq(A730_IRQ(SD_DETECT_N), a730_detect_int, IRQF_DISABLED, "SD/MMC card detect", data);
  38     if (err) {
  39         printk(KERN_ERR "a730_mci_init: SD/MMC: can't request SD/MMC card detect IRQ\n");
  40         return -1;
  41     }
  42
  43     return 0;
  44 }
  45
  46 static void a730_mci_setpower(struct device *dev, unsigned int vdd)
  47 {
  48     struct pxamci_platform_data* p_d = dev->platform_data;
  49         printk("%s\n", __FUNCTION__);
  50     if (( 1 << vdd) & p_d->ocr_mask)
  51     {
  52         printk(KERN_DEBUG "%s: on\n", __FUNCTION__);
  53         SET_A730_GPIO(SD_PWR, 0);
  54     }
  55     else
  56     {
  57         printk(KERN_DEBUG "%s: off\n", __FUNCTION__);
  58         SET_A730_GPIO(SD_PWR, 1);
  59     }
  60 }
  61
  62 static int a730_mci_get_ro(struct device *dev)
  63 {
  64     return GET_A730_GPIO(SD_RO);
  65 }
  66
  67 static void a730_mci_exit(struct device *dev, void *data)
  68 {
  69         printk("%s\n", __FUNCTION__);
  70     free_irq(A730_IRQ(SD_DETECT_N), data);
  71 }
  72
  73 static struct pxamci_platform_data a730_mci_platform_data = {
  74     .ocr_mask       = MMC_VDD_32_33 | MMC_VDD_33_34,
  75     .init           = a730_mci_init,
  76     .setpower       = a730_mci_setpower,
  77     .get_ro         = a730_mci_get_to,
  78     .exit           = a730_mci_exit,
  79 };
  80
  81 static int __init a730_mci_mod_init(void)
  82 {
  83         if (!machine_is_a730()) return -ENODEV;
  84         printk("%s\n", __FUNCTION__);
  85         pxa_set_mci_info(&a730_mci_platform_data);
  86         return 0;
  87 }
  88
  89 static void __exit a730_mci_mod_exit(void)
  90 {
  91     //printk("%s\n",__PRETTY_FUNCTION__);
  92     //platform_device_unregister(&a730_pcmcia_device);
  93 }
  94
  95 module_init(a730_mci_mod_init);
  96 module_exit(a730_mci_mod_exit);
  97
  98 MODULE_LICENSE("GPL");
  99 MODULE_AUTHOR("Serge Nikolaenko <mypal_hh@utl.ru>");
 100 MODULE_DESCRIPTION("MCI platform support for Asus MyPal 730");