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
|
Index: linux-2.6.21.7/drivers/net/Kconfig
===================================================================
--- linux-2.6.21.7.orig/drivers/net/Kconfig
+++ linux-2.6.21.7/drivers/net/Kconfig
@@ -959,6 +959,12 @@ config SMC91X
module, say M here and read <file:Documentation/modules.txt> as well
as <file:Documentation/networking/net-modules.txt>.
+config SMC91X_GUMSTIX
+ tristate
+ default m if SMC91X=m
+ default y if SMC91X=y
+ depends on SMC91X && ARCH_GUMSTIX
+
config SMC9194
tristate "SMC 9194 support"
depends on NET_VENDOR_SMC && (ISA || MAC && BROKEN)
Index: linux-2.6.21.7/drivers/net/Makefile
===================================================================
--- linux-2.6.21.7.orig/drivers/net/Makefile
+++ linux-2.6.21.7/drivers/net/Makefile
@@ -201,6 +201,7 @@ obj-$(CONFIG_PASEMI_MAC) += pasemi_mac.o
obj-$(CONFIG_MACB) += macb.o
+obj-$(CONFIG_SMC91X_GUMSTIX) += gumstix-smc91x.o
obj-$(CONFIG_ARM) += arm/
obj-$(CONFIG_DEV_APPLETALK) += appletalk/
obj-$(CONFIG_TR) += tokenring/
Index: linux-2.6.21.7/drivers/net/smc91x.c
===================================================================
--- linux-2.6.21.7.orig/drivers/net/smc91x.c
+++ linux-2.6.21.7/drivers/net/smc91x.c
@@ -2373,6 +2373,10 @@ static struct platform_driver smc_driver
},
};
+#ifdef CONFIG_ARCH_GUMSTIX
+extern void gumstix_smc91x_load(void);
+#endif
+
static int __init smc_init(void)
{
#ifdef MODULE
@@ -2384,6 +2388,10 @@ static int __init smc_init(void)
#endif
#endif
+#ifdef CONFIG_ARCH_GUMSTIX
+ gumstix_smc91x_load();
+#endif
+
return platform_driver_register(&smc_driver);
}
Index: linux-2.6.21.7/drivers/net/gumstix-smc91x.c
===================================================================
--- /dev/null
+++ linux-2.6.21.7/drivers/net/gumstix-smc91x.c
@@ -0,0 +1,143 @@
+/*
+ * Gumstix SMC91C111 chip intialization driver
+ *
+ * Author: Craig Hughes
+ * Created: December 9, 2004
+ * Copyright: (C) 2004 Craig Hughes
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ */
+
+#include <linux/module.h>
+#include <linux/ioport.h>
+#include <linux/device.h>
+#include <linux/platform_device.h>
+#include <linux/delay.h>
+
+#include <asm/hardware.h>
+#include <asm/arch/pxa-regs.h>
+#include <asm/delay.h>
+
+#include <asm/arch/gumstix.h>
+
+#define SMC_DEBUG 0
+#include <asm/io.h>
+#include "smc91x.h"
+
+static struct resource gumstix_smc91x0_resources[] = {
+ [0] = {
+ .name = "smc91x-regs",
+ .start = PXA_CS1_PHYS + 0x00000300,
+ .end = PXA_CS1_PHYS + 0x000fffff,
+ .flags = IORESOURCE_MEM,
+ },
+ [1] = {
+ .start = GUMSTIX_ETH0_IRQ,
+ .end = GUMSTIX_ETH0_IRQ,
+ .flags = IORESOURCE_IRQ,
+ },
+};
+
+static struct resource gumstix_smc91x1_resources[] = {
+ [0] = {
+ .name = "smc91x-regs",
+ .start = PXA_CS2_PHYS + 0x00000300,
+ .end = PXA_CS2_PHYS + 0x000fffff,
+ .flags = IORESOURCE_MEM,
+ },
+ [1] = {
+ .start = GUMSTIX_ETH1_IRQ,
+ .end = GUMSTIX_ETH1_IRQ,
+ .flags = IORESOURCE_IRQ,
+ },
+};
+
+static struct platform_device gumstix_smc91x0_device = {
+ .name = "smc91x",
+ .id = 0,
+ .num_resources = ARRAY_SIZE(gumstix_smc91x0_resources),
+ .resource = gumstix_smc91x0_resources,
+};
+
+static struct platform_device gumstix_smc91x1_device = {
+ .name = "smc91x",
+ .id = 1,
+ .num_resources = ARRAY_SIZE(gumstix_smc91x1_resources),
+ .resource = gumstix_smc91x1_resources,
+};
+
+static struct platform_device *smc91x_devices[] = {
+ &gumstix_smc91x0_device,
+ &gumstix_smc91x1_device,
+};
+
+/* First we're going to test if there's a 2nd SMC91C111, and if not, then we'll free up those resources and the GPIO lines
+ * that it would otherwise use. We have no choice but to probe by doing:
+ * Set nCS2 to CS2 mode
+ * Set the reset line to GPIO out mode, and pull it high, then drop it low (to trigger reset)
+ * Read from the memory space to check for the sentinel sequence identifying a likely SMC91C111 device
+ */
+int __init gumstix_smc91x_init(void)
+{
+ unsigned int val, num_devices=ARRAY_SIZE(smc91x_devices);
+ void *ioaddr;
+
+ /* Set up nPWE */
+ pxa_gpio_mode(GPIO49_nPWE_MD);
+
+ pxa_gpio_mode(GPIO78_nCS_2_MD);
+ // If either if statement fails, then we'll drop out and turn_off_eth1,
+ // if both succeed, then we'll skip that and just proceed with 2 cards
+ if(request_mem_region(gumstix_smc91x1_resources[0].start, SMC_IO_EXTENT, "smc91x probe"))
+ {
+ ioaddr = ioremap(gumstix_smc91x1_resources[0].start, SMC_IO_EXTENT);
+ val = ioread16(ioaddr + BANK_SELECT);
+ iounmap(ioaddr);
+ release_mem_region(gumstix_smc91x1_resources[0].start, SMC_IO_EXTENT);
+ if ((val & 0xFF00) == 0x3300) {
+ goto proceed;
+ }
+ }
+
+turn_off_eth1:
+ // This is apparently not an SMC91C111
+ // So, let's decrement the number of devices to request, and reset the GPIO lines to GPIO IN mode
+ num_devices--;
+ smc91x_devices[1] = NULL;
+ pxa_gpio_mode(78 | GPIO_IN);
+
+proceed:
+ pxa_gpio_mode(GPIO15_nCS_1_MD);
+
+ if(smc91x_devices[1]) pxa_gpio_mode(GPIO_GUMSTIX_ETH1_RST_MD);
+ pxa_gpio_mode(GPIO_GUMSTIX_ETH0_RST_MD);
+ if(smc91x_devices[1]) GPSR(GPIO_GUMSTIX_ETH1_RST) = GPIO_bit(GPIO_GUMSTIX_ETH1_RST);
+ GPSR(GPIO_GUMSTIX_ETH0_RST) = GPIO_bit(GPIO_GUMSTIX_ETH0_RST);
+ udelay(1); // Hold RESET for at least 100ns
+ if(smc91x_devices[1]) GPCR(GPIO_GUMSTIX_ETH1_RST) = GPIO_bit(GPIO_GUMSTIX_ETH1_RST);
+ GPCR(GPIO_GUMSTIX_ETH0_RST) = GPIO_bit(GPIO_GUMSTIX_ETH0_RST);
+ msleep(50);
+
+ return platform_add_devices(smc91x_devices, num_devices);
+}
+
+void __exit gumstix_smc91x_exit(void)
+{
+ if(smc91x_devices[1] != NULL) platform_device_unregister(&gumstix_smc91x1_device);
+ platform_device_unregister(&gumstix_smc91x0_device);
+}
+
+void gumstix_smc91x_load(void) {}
+EXPORT_SYMBOL(gumstix_smc91x_load);
+
+module_init(gumstix_smc91x_init);
+module_exit(gumstix_smc91x_exit);
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Craig Hughes <craig@gumstix.com>");
+MODULE_DESCRIPTION("Gumstix board SMC91C111 chip initialization driver");
+MODULE_VERSION("1:0.1");
|
