root/drivers/pcmcia/pxa2xx_cm_x270.c

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DEFINITIONS

This source file includes following definitions.
  1. cmx270_pcmcia_hw_init
  2. cmx270_pcmcia_shutdown
  3. cmx270_pcmcia_socket_state
  4. cmx270_pcmcia_configure_socket
  5. cmx270_pcmcia_init
  6. cmx270_pcmcia_exit

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * linux/drivers/pcmcia/pxa/pxa_cm_x270.c
   4  *
   5  * Compulab Ltd., 2003, 2007, 2008
   6  * Mike Rapoport <mike@compulab.co.il>
   7  */
   8 
   9 #include <linux/platform_device.h>
  10 #include <linux/irq.h>
  11 #include <linux/delay.h>
  12 #include <linux/gpio.h>
  13 #include <linux/export.h>
  14 
  15 #include "soc_common.h"
  16 
  17 #define GPIO_PCMCIA_S0_CD_VALID (84)
  18 #define GPIO_PCMCIA_S0_RDYINT   (82)
  19 #define GPIO_PCMCIA_RESET       (53)
  20 
  21 static int cmx270_pcmcia_hw_init(struct soc_pcmcia_socket *skt)
  22 {
  23         int ret = gpio_request(GPIO_PCMCIA_RESET, "PCCard reset");
  24         if (ret)
  25                 return ret;
  26         gpio_direction_output(GPIO_PCMCIA_RESET, 0);
  27 
  28         skt->stat[SOC_STAT_CD].gpio = GPIO_PCMCIA_S0_CD_VALID;
  29         skt->stat[SOC_STAT_CD].name = "PCMCIA0 CD";
  30         skt->stat[SOC_STAT_RDY].gpio = GPIO_PCMCIA_S0_RDYINT;
  31         skt->stat[SOC_STAT_RDY].name = "PCMCIA0 RDY";
  32 
  33         return ret;
  34 }
  35 
  36 static void cmx270_pcmcia_shutdown(struct soc_pcmcia_socket *skt)
  37 {
  38         gpio_free(GPIO_PCMCIA_RESET);
  39 }
  40 
  41 
  42 static void cmx270_pcmcia_socket_state(struct soc_pcmcia_socket *skt,
  43                                        struct pcmcia_state *state)
  44 {
  45         state->vs_3v  = 0;
  46         state->vs_Xv  = 0;
  47 }
  48 
  49 
  50 static int cmx270_pcmcia_configure_socket(struct soc_pcmcia_socket *skt,
  51                                           const socket_state_t *state)
  52 {
  53         switch (skt->nr) {
  54         case 0:
  55                 if (state->flags & SS_RESET) {
  56                         gpio_set_value(GPIO_PCMCIA_RESET, 1);
  57                         udelay(10);
  58                         gpio_set_value(GPIO_PCMCIA_RESET, 0);
  59                 }
  60                 break;
  61         }
  62 
  63         return 0;
  64 }
  65 
  66 static struct pcmcia_low_level cmx270_pcmcia_ops __initdata = {
  67         .owner                  = THIS_MODULE,
  68         .hw_init                = cmx270_pcmcia_hw_init,
  69         .hw_shutdown            = cmx270_pcmcia_shutdown,
  70         .socket_state           = cmx270_pcmcia_socket_state,
  71         .configure_socket       = cmx270_pcmcia_configure_socket,
  72         .nr                     = 1,
  73 };
  74 
  75 static struct platform_device *cmx270_pcmcia_device;
  76 
  77 int __init cmx270_pcmcia_init(void)
  78 {
  79         int ret;
  80 
  81         cmx270_pcmcia_device = platform_device_alloc("pxa2xx-pcmcia", -1);
  82 
  83         if (!cmx270_pcmcia_device)
  84                 return -ENOMEM;
  85 
  86         ret = platform_device_add_data(cmx270_pcmcia_device, &cmx270_pcmcia_ops,
  87                                        sizeof(cmx270_pcmcia_ops));
  88 
  89         if (ret == 0) {
  90                 printk(KERN_INFO "Registering cm-x270 PCMCIA interface.\n");
  91                 ret = platform_device_add(cmx270_pcmcia_device);
  92         }
  93 
  94         if (ret)
  95                 platform_device_put(cmx270_pcmcia_device);
  96 
  97         return ret;
  98 }
  99 
 100 void __exit cmx270_pcmcia_exit(void)
 101 {
 102         platform_device_unregister(cmx270_pcmcia_device);
 103 }

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