target/linux/pxa/patches-3.10/005-verdex_pcmcia_support.patch

   1 From 76a102bd5c9d792db19c6c72eafdecea0311a0c9 Mon Sep 17 00:00:00 2001
   2 From: Craig Hughes <craig@gumstix.com>
   3 Date: Fri, 30 Oct 2009 14:16:27 -0400
   4 Subject: [PATCH] [ARM] pxa: Gumstix Verdex PCMCIA support
   5
   6 Needed for the Libertas CS wireless device.
   7
   8 Signed-off-by: Bobby Powers <bobbypowers@gmail.com>
   9 ---
  10  drivers/pcmcia/Kconfig          |    3 +-
  11  drivers/pcmcia/Makefile         |    3 +
  12  drivers/pcmcia/pxa2xx_gumstix.c |  194 +++++++++++++++++++++++++++++++++++++++
  13  3 files changed, 199 insertions(+), 1 deletions(-)
  14  create mode 100644 drivers/pcmcia/pxa2xx_gumstix.c
  15
  16 --- a/drivers/pcmcia/Kconfig
  17 +++ b/drivers/pcmcia/Kconfig
  18 @@ -217,7 +217,7 @@ config PCMCIA_PXA2XX
  19                     || MACH_ARMCORE || ARCH_PXA_PALM || TRIZEPS_PCMCIA \
  20                     || ARCOM_PCMCIA || ARCH_PXA_ESERIES || MACH_STARGATE2 \
  21                     || MACH_VPAC270 || MACH_BALLOON3 || MACH_COLIBRI \
  22 -                   || MACH_COLIBRI320 || MACH_H4700)
  23 +                   || MACH_COLIBRI320 || MACH_H4700 || ARCH_GUMSTIX)
  24         select PCMCIA_SA1111 if ARCH_LUBBOCK && SA1111
  25         select PCMCIA_SOC_COMMON
  26         help
  27 --- a/drivers/pcmcia/Makefile
  28 +++ b/drivers/pcmcia/Makefile
  29 @@ -71,6 +71,9 @@ pxa2xx-obj-$(CONFIG_MACH_COLIBRI)             += px
  30  pxa2xx-obj-$(CONFIG_MACH_COLIBRI320)           += pxa2xx_colibri.o
  31  pxa2xx-obj-$(CONFIG_MACH_H4700)                        += pxa2xx_hx4700.o
  32
  33 +pxa2xx-obj-$(CONFIG_MACH_GUMSTIX_VERDEX)       += pxa2xx_cs.o
  34 +pxa2xx_cs-objs                                 := pxa2xx_gumstix.o
  35 +
  36  obj-$(CONFIG_PCMCIA_PXA2XX)                    += pxa2xx_base.o $(pxa2xx-obj-y)
  37
  38  obj-$(CONFIG_PCMCIA_XXS1500)                   += xxs1500_ss.o
  39 --- /dev/null
  40 +++ b/drivers/pcmcia/pxa2xx_gumstix.c
  41 @@ -0,0 +1,168 @@
  42 +/*
  43 + * linux/drivers/pcmcia/pxa2xx_gumstix.c
  44 + *
  45 + * Gumstix PCMCIA specific routines. Based on Mainstone
  46 + *
  47 + * Copyright 2004, Craig Hughes <craig@gumstix.com>
  48 + *
  49 + * This program is free software; you can redistribute it and/or modify
  50 + * it under the terms of the GNU General Public License version 2 as
  51 + * published by the Free Software Foundation.
  52 + */
  53 +
  54 +#include <linux/module.h>
  55 +#include <linux/init.h>
  56 +#include <linux/kernel.h>
  57 +#include <linux/errno.h>
  58 +#include <linux/interrupt.h>
  59 +#include <linux/irq.h>
  60 +#include <linux/gpio.h>
  61 +
  62 +#include <linux/delay.h>
  63 +#include <linux/platform_device.h>
  64 +
  65 +#include <linux/gpio-pxa.h>
  66 +
  67 +#include <pcmcia/ss.h>
  68 +
  69 +#include <mach/hardware.h>
  70 +#include <asm/mach-types.h>
  71 +
  72 +#include <mach/pxa27x.h>
  73 +
  74 +#include <asm/io.h>
  75 +#include <mach/gpio.h>
  76 +#include <mach/gumstix.h>
  77 +#include "soc_common.h"
  78 +
  79 +#define ARRAY_AND_SIZE(x)      (x), ARRAY_SIZE(x)
  80 +
  81 +#define BANK_OFF(n)     (((n) < 3) ? (n) << 2 : 0x100 + (((n) - 3) << 2))
  82 +#define GPLR(x)         __REG2(0x40E00000, BANK_OFF((x) >> 5))
  83 +
  84 +static int net_cf_vx_mode = 0;
  85 +
  86 +static int gumstix_pcmcia_hw_init(struct soc_pcmcia_socket *skt)
  87 +{
  88 +/* Note: The verdex_pcmcia_pin_config is moved to gumstix_verdex.c in order to use mfp_pxa2xx_config
  89 +   for board-specific pin configuration instead of the old deprecated pxa_gpio_mode function.  Thus,
  90 +   only the IRQ init is still needed to be done here. */
  91 +       if (skt->nr == 0) {
  92 +               skt->socket.pci_irq = (net_cf_vx_mode == 0) ? GUMSTIX_S0_PRDY_nBSY_IRQ : GUMSTIX_S0_PRDY_nBSY_OLD_IRQ;
  93 +               skt->stat[SOC_STAT_CD].gpio = GUMSTIX_S0_nCD_IRQ;
  94 +               skt->stat[SOC_STAT_CD].name = "CF0 nCD";
  95 +               skt->stat[SOC_STAT_RDY].gpio = GUMSTIX_S0_nSTSCHG_IRQ;
  96 +               skt->stat[SOC_STAT_RDY].name = "CF0 nSTSCHG";
  97 +       } else {
  98 +               skt->socket.pci_irq = GUMSTIX_S1_PRDY_nBSY_IRQ;
  99 +               skt->stat[SOC_STAT_CD].gpio = GUMSTIX_S1_nCD_IRQ;
 100 +               skt->stat[SOC_STAT_CD].name = "CF1 nCD";
 101 +               skt->stat[SOC_STAT_RDY].gpio = GUMSTIX_S1_nSTSCHG_IRQ;
 102 +               skt->stat[SOC_STAT_RDY].name = "CF1 nSTSCHG";
 103 +       }
 104 +
 105 +       return 0;
 106 +}
 107 +
 108 +static void gumstix_pcmcia_hw_shutdown(struct soc_pcmcia_socket *skt)
 109 +{
 110 +       if (net_cf_vx_mode) {
 111 +               gpio_free(GPIO_GUMSTIX_CF_OLD_RESET);
 112 +       } else {
 113 +               gpio_free(GPIO_GUMSTIX_CF_RESET);
 114 +       }
 115 +
 116 +}
 117 +
 118 +static void gumstix_pcmcia_socket_state(struct soc_pcmcia_socket *skt,
 119 +                                   struct pcmcia_state *state)
 120 +{
 121 +       unsigned int cd, prdy_nbsy, nbvd1;
 122 +       if(skt->nr == 0)
 123 +       {
 124 +               cd = GPIO_GUMSTIX_nCD_0;
 125 +               if(net_cf_vx_mode)
 126 +                       prdy_nbsy = GPIO_GUMSTIX_PRDY_nBSY_0_OLD;
 127 +               else
 128 +                       prdy_nbsy = GPIO_GUMSTIX_PRDY_nBSY_0;
 129 +               nbvd1 = GPIO_GUMSTIX_nBVD1_0;
 130 +       } else {
 131 +               cd = GPIO_GUMSTIX_nCD_1;
 132 +               prdy_nbsy = GPIO_GUMSTIX_PRDY_nBSY_1;
 133 +               nbvd1 = GPIO_GUMSTIX_nBVD1_1;
 134 +       }
 135 +       state->detect = !!gpio_get_value(cd);
 136 +       state->ready  = !!gpio_get_value(prdy_nbsy);
 137 +       state->bvd1   = !!gpio_get_value(nbvd1);
 138 +       state->bvd2   = 1;
 139 +       state->vs_3v  = 0;
 140 +       state->vs_Xv  = 0;
 141 +       state->wrprot = 0;
 142 +}
 143 +
 144 +static int gumstix_pcmcia_configure_socket(struct soc_pcmcia_socket *skt,
 145 +                                      const socket_state_t *state)
 146 +{
 147 +       return 0;
 148 +}
 149 +
 150 +static struct pcmcia_low_level gumstix_pcmcia_ops = {
 151 +       .owner                  = THIS_MODULE,
 152 +       .hw_init                = gumstix_pcmcia_hw_init,
 153 +       .hw_shutdown            = gumstix_pcmcia_hw_shutdown,
 154 +       .socket_state           = gumstix_pcmcia_socket_state,
 155 +       .configure_socket       = gumstix_pcmcia_configure_socket,
 156 +       .nr                     = 2,
 157 +};
 158 +
 159 +static struct platform_device *gumstix_pcmcia_device;
 160 +
 161 +extern int __init gumstix_get_cf_cards(void);
 162 +
 163 +#ifdef CONFIG_MACH_GUMSTIX_VERDEX
 164 +extern int __init gumstix_check_if_netCF_vx(void);
 165 +#endif
 166 +
 167 +static int __init gumstix_pcmcia_init(void)
 168 +{
 169 +       int ret;
 170 +
 171 +#ifdef CONFIG_MACH_GUMSTIX_VERDEX
 172 +       net_cf_vx_mode = gumstix_check_if_netCF_vx();
 173 +#endif
 174 +
 175 +       gumstix_pcmcia_ops.nr = gumstix_get_cf_cards();
 176 +
 177 +       gumstix_pcmcia_device = platform_device_alloc("pxa2xx-pcmcia", -1);
 178 +       if (!gumstix_pcmcia_device)
 179 +               return -ENOMEM;
 180 +
 181 +       ret = platform_device_add_data(gumstix_pcmcia_device, &gumstix_pcmcia_ops,
 182 +                                      sizeof(gumstix_pcmcia_ops));
 183 +
 184 +       if (ret == 0) {
 185 +               printk(KERN_INFO "Registering gumstix PCMCIA interface.\n");
 186 +               ret = platform_device_add(gumstix_pcmcia_device);
 187 +       }
 188 +
 189 +       if (ret)
 190 +               platform_device_put(gumstix_pcmcia_device);
 191 +
 192 +       return ret;
 193 +}
 194 +
 195 +static void __exit gumstix_pcmcia_exit(void)
 196 +{
 197 +       /*
 198 +        * This call is supposed to free our gumstix_pcmcia_device.
 199 +        * Unfortunately platform_device don't have a free method, and
 200 +        * we can't assume it's free of any reference at this point so we
 201 +        * can't free it either.
 202 +        */
 203 +       platform_device_unregister(gumstix_pcmcia_device);
 204 +}
 205 +
 206 +fs_initcall(gumstix_pcmcia_init);
 207 +module_exit(gumstix_pcmcia_exit);
 208 +
 209 +MODULE_LICENSE("GPL");