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
6 Needed for the Libertas CS wireless device.
8 Signed-off-by: Bobby Powers <bobbypowers@gmail.com>
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
16 --- a/drivers/pcmcia/Kconfig
17 +++ b/drivers/pcmcia/Kconfig
18 @@ -212,7 +212,7 @@ 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 \
23 + || MACH_COLIBRI320 || ARCH_GUMSTIX)
24 select PCMCIA_SOC_COMMON
26 Say Y here to include support for the PXA2xx PCMCIA controller
27 --- a/drivers/pcmcia/Makefile
28 +++ b/drivers/pcmcia/Makefile
29 @@ -70,6 +70,9 @@ pxa2xx-obj-$(CONFIG_MACH_BALLOON3) += p
30 pxa2xx-obj-$(CONFIG_MACH_COLIBRI) += pxa2xx_colibri.o
31 pxa2xx-obj-$(CONFIG_MACH_COLIBRI320) += pxa2xx_colibri.o
33 +pxa2xx-obj-$(CONFIG_MACH_GUMSTIX_VERDEX) += pxa2xx_cs.o
34 +pxa2xx_cs-objs := pxa2xx_gumstix.o
36 obj-$(CONFIG_PCMCIA_PXA2XX) += pxa2xx_base.o $(pxa2xx-obj-y)
38 obj-$(CONFIG_PCMCIA_XXS1500) += xxs1500_ss.o
40 +++ b/drivers/pcmcia/pxa2xx_gumstix.c
43 + * linux/drivers/pcmcia/pxa2xx_gumstix.c
45 + * Gumstix PCMCIA specific routines. Based on Mainstone
47 + * Copyright 2004, Craig Hughes <craig@gumstix.com>
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.
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>
62 +#include <linux/delay.h>
63 +#include <linux/platform_device.h>
65 +#include <linux/gpio-pxa.h>
67 +#include <pcmcia/ss.h>
69 +#include <mach/hardware.h>
70 +#include <asm/mach-types.h>
72 +#include <mach/pxa27x.h>
75 +#include <mach/gpio.h>
76 +#include <mach/gumstix.h>
77 +#include "soc_common.h"
79 +#define ARRAY_AND_SIZE(x) (x), ARRAY_SIZE(x)
81 +#define BANK_OFF(n) (((n) < 3) ? (n) << 2 : 0x100 + (((n) - 3) << 2))
82 +#define GPLR(x) __REG2(0x40E00000, BANK_OFF((x) >> 5))
84 +static struct pcmcia_irqs gumstix_pcmcia_irqs0[] = {
85 + { 0, GUMSTIX_S0_nCD_IRQ, "CF0 nCD" },
86 + { 0, GUMSTIX_S0_nSTSCHG_IRQ, "CF0 nSTSCHG" },
89 +static struct pcmcia_irqs gumstix_pcmcia_irqs1[] = {
90 + { 1, GUMSTIX_S1_nCD_IRQ, "CF1 nCD" },
91 + { 1, GUMSTIX_S1_nSTSCHG_IRQ, "CF1 nSTSCHG" },
95 +static int net_cf_vx_mode = 0;
97 +static int gumstix_pcmcia_hw_init(struct soc_pcmcia_socket *skt)
99 +/* Note: The verdex_pcmcia_pin_config is moved to gumstix_verdex.c in order to use mfp_pxa2xx_config
100 + for board-specific pin configuration instead of the old deprecated pxa_gpio_mode function. Thus,
101 + only the IRQ init is still needed to be done here. */
102 + skt->socket.pci_irq = (skt->nr == 0) ? ((net_cf_vx_mode == 0) ? GUMSTIX_S0_PRDY_nBSY_IRQ : GUMSTIX_S0_PRDY_nBSY_OLD_IRQ) : GUMSTIX_S1_PRDY_nBSY_IRQ;
104 + return (skt->nr == 0) ? soc_pcmcia_request_irqs(skt, gumstix_pcmcia_irqs0, ARRAY_SIZE(gumstix_pcmcia_irqs0)) :
105 + soc_pcmcia_request_irqs(skt, gumstix_pcmcia_irqs1, ARRAY_SIZE(gumstix_pcmcia_irqs1));
108 +static void gumstix_pcmcia_hw_shutdown(struct soc_pcmcia_socket *skt)
112 + soc_pcmcia_free_irqs(skt, gumstix_pcmcia_irqs0, ARRAY_SIZE(gumstix_pcmcia_irqs0));
114 + soc_pcmcia_free_irqs(skt, gumstix_pcmcia_irqs1, ARRAY_SIZE(gumstix_pcmcia_irqs1));
117 + if (net_cf_vx_mode) {
118 + gpio_free(GPIO_GUMSTIX_CF_OLD_RESET);
120 + gpio_free(GPIO_GUMSTIX_CF_RESET);
125 +static void gumstix_pcmcia_socket_state(struct soc_pcmcia_socket *skt,
126 + struct pcmcia_state *state)
128 + unsigned int cd, prdy_nbsy, nbvd1;
131 + cd = GPIO_GUMSTIX_nCD_0;
133 + prdy_nbsy = GPIO_GUMSTIX_PRDY_nBSY_0_OLD;
135 + prdy_nbsy = GPIO_GUMSTIX_PRDY_nBSY_0;
136 + nbvd1 = GPIO_GUMSTIX_nBVD1_0;
138 + cd = GPIO_GUMSTIX_nCD_1;
139 + prdy_nbsy = GPIO_GUMSTIX_PRDY_nBSY_1;
140 + nbvd1 = GPIO_GUMSTIX_nBVD1_1;
142 + state->detect = !!gpio_get_value(cd);
143 + state->ready = !!gpio_get_value(prdy_nbsy);
144 + state->bvd1 = !!gpio_get_value(nbvd1);
151 +static int gumstix_pcmcia_configure_socket(struct soc_pcmcia_socket *skt,
152 + const socket_state_t *state)
157 +static void gumstix_pcmcia_socket_init(struct soc_pcmcia_socket *skt)
160 + soc_pcmcia_enable_irqs(skt, gumstix_pcmcia_irqs0, ARRAY_SIZE(gumstix_pcmcia_irqs0));
162 + soc_pcmcia_enable_irqs(skt, gumstix_pcmcia_irqs1, ARRAY_SIZE(gumstix_pcmcia_irqs1));
166 +static void gumstix_pcmcia_socket_suspend(struct soc_pcmcia_socket *skt)
169 + soc_pcmcia_disable_irqs(skt, gumstix_pcmcia_irqs0, ARRAY_SIZE(gumstix_pcmcia_irqs0));
171 + soc_pcmcia_disable_irqs(skt, gumstix_pcmcia_irqs1, ARRAY_SIZE(gumstix_pcmcia_irqs1));
175 +static struct pcmcia_low_level gumstix_pcmcia_ops = {
176 + .owner = THIS_MODULE,
177 + .hw_init = gumstix_pcmcia_hw_init,
178 + .hw_shutdown = gumstix_pcmcia_hw_shutdown,
179 + .socket_state = gumstix_pcmcia_socket_state,
180 + .configure_socket = gumstix_pcmcia_configure_socket,
181 + .socket_init = gumstix_pcmcia_socket_init,
182 + .socket_suspend = gumstix_pcmcia_socket_suspend,
186 +static struct platform_device *gumstix_pcmcia_device;
188 +extern int __init gumstix_get_cf_cards(void);
190 +#ifdef CONFIG_MACH_GUMSTIX_VERDEX
191 +extern int __init gumstix_check_if_netCF_vx(void);
194 +static int __init gumstix_pcmcia_init(void)
198 +#ifdef CONFIG_MACH_GUMSTIX_VERDEX
199 + net_cf_vx_mode = gumstix_check_if_netCF_vx();
202 + gumstix_pcmcia_ops.nr = gumstix_get_cf_cards();
204 + gumstix_pcmcia_device = platform_device_alloc("pxa2xx-pcmcia", -1);
205 + if (!gumstix_pcmcia_device)
208 + ret = platform_device_add_data(gumstix_pcmcia_device, &gumstix_pcmcia_ops,
209 + sizeof(gumstix_pcmcia_ops));
212 + printk(KERN_INFO "Registering gumstix PCMCIA interface.\n");
213 + ret = platform_device_add(gumstix_pcmcia_device);
217 + platform_device_put(gumstix_pcmcia_device);
222 +static void __exit gumstix_pcmcia_exit(void)
225 + * This call is supposed to free our gumstix_pcmcia_device.
226 + * Unfortunately platform_device don't have a free method, and
227 + * we can't assume it's free of any reference at this point so we
228 + * can't free it either.
230 + platform_device_unregister(gumstix_pcmcia_device);
233 +fs_initcall(gumstix_pcmcia_init);
234 +module_exit(gumstix_pcmcia_exit);
236 +MODULE_LICENSE("GPL");