1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
|
From 76a102bd5c9d792db19c6c72eafdecea0311a0c9 Mon Sep 17 00:00:00 2001
From: Craig Hughes <craig@gumstix.com>
Date: Fri, 30 Oct 2009 14:16:27 -0400
Subject: [PATCH] [ARM] pxa: Gumstix Verdex PCMCIA support
Needed for the Libertas CS wireless device.
Signed-off-by: Bobby Powers <bobbypowers@gmail.com>
---
drivers/pcmcia/Kconfig | 3 +-
drivers/pcmcia/Makefile | 3 +
drivers/pcmcia/pxa2xx_gumstix.c | 194 +++++++++++++++++++++++++++++++++++++++
3 files changed, 199 insertions(+), 1 deletions(-)
create mode 100644 drivers/pcmcia/pxa2xx_gumstix.c
--- a/drivers/pcmcia/Kconfig
+++ b/drivers/pcmcia/Kconfig
@@ -221,7 +221,8 @@ config PCMCIA_PXA2XX
depends on ARM && ARCH_PXA && PCMCIA
depends on (ARCH_LUBBOCK || MACH_MAINSTONE || PXA_SHARPSL \
|| MACH_ARMCORE || ARCH_PXA_PALM || TRIZEPS_PCMCIA \
- || ARCH_VIPER || ARCH_PXA_ESERIES || MACH_STARGATE2)
+ || ARCH_VIPER || ARCH_PXA_ESERIES || MACH_STARGATE2 \
+ || ARCH_GUMSTIX)
help
Say Y here to include support for the PXA2xx PCMCIA controller
--- a/drivers/pcmcia/Makefile
+++ b/drivers/pcmcia/Makefile
@@ -77,4 +77,7 @@ pxa2xx-obj-$(CONFIG_MACH_PALMLD) += pxa
pxa2xx-obj-$(CONFIG_MACH_E740) += pxa2xx_e740.o
pxa2xx-obj-$(CONFIG_MACH_STARGATE2) += pxa2xx_stargate2.o
+pxa2xx-obj-$(CONFIG_MACH_GUMSTIX_VERDEX) += pxa2xx_cs.o
+pxa2xx_cs-objs := pxa2xx_gumstix.o
+
obj-$(CONFIG_PCMCIA_PXA2XX) += pxa2xx_core.o $(pxa2xx-obj-y)
--- /dev/null
+++ b/drivers/pcmcia/pxa2xx_gumstix.c
@@ -0,0 +1,194 @@
+/*
+ * linux/drivers/pcmcia/pxa2xx_gumstix.c
+ *
+ * Gumstix PCMCIA specific routines. Based on Mainstone
+ *
+ * Copyright 2004, Craig Hughes <craig@gumstix.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/errno.h>
+#include <linux/interrupt.h>
+#include <linux/irq.h>
+#include <linux/gpio.h>
+
+#include <linux/delay.h>
+#include <linux/platform_device.h>
+
+#include <pcmcia/ss.h>
+
+#include <mach/hardware.h>
+#include <asm/mach-types.h>
+
+#ifdef CONFIG_MACH_GUMSTIX_VERDEX
+#include <mach/pxa27x.h>
+#else
+#include <mach/pxa27x.h>
+#endif
+
+#include <asm/io.h>
+#include <mach/gpio.h>
+#include <mach/gumstix.h>
+#include "soc_common.h"
+
+#define ARRAY_AND_SIZE(x) (x), ARRAY_SIZE(x)
+
+static struct pcmcia_irqs gumstix_pcmcia_irqs0[] = {
+ { 0, GUMSTIX_S0_nCD_IRQ, "CF0 nCD" },
+ { 0, GUMSTIX_S0_nSTSCHG_IRQ, "CF0 nSTSCHG" },
+};
+
+static struct pcmcia_irqs gumstix_pcmcia_irqs1[] = {
+ { 1, GUMSTIX_S1_nCD_IRQ, "CF1 nCD" },
+ { 1, GUMSTIX_S1_nSTSCHG_IRQ, "CF1 nSTSCHG" },
+};
+
+
+static int net_cf_vx_mode = 0;
+
+static int gumstix_pcmcia_hw_init(struct soc_pcmcia_socket *skt)
+{
+/* Note: The verdex_pcmcia_pin_config is moved to gumstix_verdex.c in order to use mfp_pxa2xx_config
+ for board-specific pin configuration instead of the old deprecated pxa_gpio_mode function. Thus,
+ only the IRQ init is still needed to be done here. */
+ skt->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;
+
+ return (skt->nr == 0) ? soc_pcmcia_request_irqs(skt, gumstix_pcmcia_irqs0, ARRAY_SIZE(gumstix_pcmcia_irqs0)) :
+ soc_pcmcia_request_irqs(skt, gumstix_pcmcia_irqs1, ARRAY_SIZE(gumstix_pcmcia_irqs1));
+}
+
+static void gumstix_pcmcia_hw_shutdown(struct soc_pcmcia_socket *skt)
+{
+ if(skt->nr == 0)
+ {
+ soc_pcmcia_free_irqs(skt, gumstix_pcmcia_irqs0, ARRAY_SIZE(gumstix_pcmcia_irqs0));
+ } else {
+ soc_pcmcia_free_irqs(skt, gumstix_pcmcia_irqs1, ARRAY_SIZE(gumstix_pcmcia_irqs1));
+ }
+
+ if (net_cf_vx_mode) {
+ gpio_free(GPIO_GUMSTIX_CF_OLD_RESET);
+ } else {
+ gpio_free(GPIO_GUMSTIX_CF_RESET);
+ }
+
+}
+
+static void gumstix_pcmcia_socket_state(struct soc_pcmcia_socket *skt,
+ struct pcmcia_state *state)
+{
+ unsigned int cd, prdy_nbsy, nbvd1;
+ if(skt->nr == 0)
+ {
+ cd = GPIO_GUMSTIX_nCD_0;
+ if(net_cf_vx_mode)
+ prdy_nbsy = GPIO_GUMSTIX_PRDY_nBSY_0_OLD;
+ else
+ prdy_nbsy = GPIO_GUMSTIX_PRDY_nBSY_0;
+ nbvd1 = GPIO_GUMSTIX_nBVD1_0;
+ } else {
+ cd = GPIO_GUMSTIX_nCD_1;
+ prdy_nbsy = GPIO_GUMSTIX_PRDY_nBSY_1;
+ nbvd1 = GPIO_GUMSTIX_nBVD1_1;
+ }
+ state->detect = !(GPLR(cd) & GPIO_bit(cd));
+ state->ready = !!(GPLR(prdy_nbsy) & GPIO_bit(prdy_nbsy));
+ state->bvd1 = !!(GPLR(nbvd1) & GPIO_bit(nbvd1));
+ state->bvd2 = 1;
+ state->vs_3v = 0;
+ state->vs_Xv = 0;
+ state->wrprot = 0;
+}
+
+static int gumstix_pcmcia_configure_socket(struct soc_pcmcia_socket *skt,
+ const socket_state_t *state)
+{
+ return 0;
+}
+
+static void gumstix_pcmcia_socket_init(struct soc_pcmcia_socket *skt)
+{
+ if(skt->nr) {
+ soc_pcmcia_enable_irqs(skt, gumstix_pcmcia_irqs0, ARRAY_SIZE(gumstix_pcmcia_irqs0));
+ } else {
+ soc_pcmcia_enable_irqs(skt, gumstix_pcmcia_irqs1, ARRAY_SIZE(gumstix_pcmcia_irqs1));
+ }
+}
+
+static void gumstix_pcmcia_socket_suspend(struct soc_pcmcia_socket *skt)
+{
+ if(skt->nr) {
+ soc_pcmcia_disable_irqs(skt, gumstix_pcmcia_irqs0, ARRAY_SIZE(gumstix_pcmcia_irqs0));
+ } else {
+ soc_pcmcia_disable_irqs(skt, gumstix_pcmcia_irqs1, ARRAY_SIZE(gumstix_pcmcia_irqs1));
+ }
+}
+
+static struct pcmcia_low_level gumstix_pcmcia_ops = {
+ .owner = THIS_MODULE,
+ .hw_init = gumstix_pcmcia_hw_init,
+ .hw_shutdown = gumstix_pcmcia_hw_shutdown,
+ .socket_state = gumstix_pcmcia_socket_state,
+ .configure_socket = gumstix_pcmcia_configure_socket,
+ .socket_init = gumstix_pcmcia_socket_init,
+ .socket_suspend = gumstix_pcmcia_socket_suspend,
+ .nr = 2,
+};
+
+static struct platform_device *gumstix_pcmcia_device;
+
+extern int __init gumstix_get_cf_cards(void);
+
+#ifdef CONFIG_MACH_GUMSTIX_VERDEX
+extern int __init gumstix_check_if_netCF_vx(void);
+#endif
+
+static int __init gumstix_pcmcia_init(void)
+{
+ int ret;
+
+#ifdef CONFIG_MACH_GUMSTIX_VERDEX
+ net_cf_vx_mode = gumstix_check_if_netCF_vx();
+#endif
+
+ gumstix_pcmcia_ops.nr = gumstix_get_cf_cards();
+
+ gumstix_pcmcia_device = platform_device_alloc("pxa2xx-pcmcia", -1);
+ if (!gumstix_pcmcia_device)
+ return -ENOMEM;
+
+ ret = platform_device_add_data(gumstix_pcmcia_device, &gumstix_pcmcia_ops,
+ sizeof(gumstix_pcmcia_ops));
+
+ if (ret == 0) {
+ printk(KERN_INFO "Registering gumstix PCMCIA interface.\n");
+ ret = platform_device_add(gumstix_pcmcia_device);
+ }
+
+ if (ret)
+ platform_device_put(gumstix_pcmcia_device);
+
+ return ret;
+}
+
+static void __exit gumstix_pcmcia_exit(void)
+{
+ /*
+ * This call is supposed to free our gumstix_pcmcia_device.
+ * Unfortunately platform_device don't have a free method, and
+ * we can't assume it's free of any reference at this point so we
+ * can't free it either.
+ */
+ platform_device_unregister(gumstix_pcmcia_device);
+}
+
+fs_initcall(gumstix_pcmcia_init);
+module_exit(gumstix_pcmcia_exit);
+
+MODULE_LICENSE("GPL");
|
