summaryrefslogtreecommitdiff
path: root/target/linux/brcm47xx/patches-2.6.25/621-ssb-common-gpio-api.patch
blob: d1debcfe3a92cc720490d3cd85805487fa664058 (plain)
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
235
236
237
238
239
240
241
242
243
244
245
Index: linux-2.6.23.16/drivers/ssb/driver_chipcommon.c
===================================================================
--- linux-2.6.23.16.orig/drivers/ssb/driver_chipcommon.c	2008-02-19 15:50:42.000000000 +0100
+++ linux-2.6.23.16/drivers/ssb/driver_chipcommon.c	2008-02-19 15:50:44.000000000 +0100
@@ -361,37 +361,31 @@ u32 ssb_chipco_gpio_in(struct ssb_chipco
 {
 	return chipco_read32(cc, SSB_CHIPCO_GPIOIN) & mask;
 }
-EXPORT_SYMBOL(ssb_chipco_gpio_in);
 
 u32 ssb_chipco_gpio_out(struct ssb_chipcommon *cc, u32 mask, u32 value)
 {
 	return chipco_write32_masked(cc, SSB_CHIPCO_GPIOOUT, mask, value);
 }
-EXPORT_SYMBOL(ssb_chipco_gpio_out);
 
 u32 ssb_chipco_gpio_outen(struct ssb_chipcommon *cc, u32 mask, u32 value)
 {
 	return chipco_write32_masked(cc, SSB_CHIPCO_GPIOOUTEN, mask, value);
 }
-EXPORT_SYMBOL(ssb_chipco_gpio_outen);
 
 u32 ssb_chipco_gpio_control(struct ssb_chipcommon *cc, u32 mask, u32 value)
 {
 	return chipco_write32_masked(cc, SSB_CHIPCO_GPIOCTL, mask, value);
 }
-EXPORT_SYMBOL(ssb_chipco_gpio_control);
 
 u32 ssb_chipco_gpio_intmask(struct ssb_chipcommon *cc, u32 mask, u32 value)
 {
 	return chipco_write32_masked(cc, SSB_CHIPCO_GPIOIRQ, mask, value);
 }
-EXPORT_SYMBOL(ssb_chipco_gpio_intmask);
 
 u32 ssb_chipco_gpio_polarity(struct ssb_chipcommon *cc, u32 mask, u32 value)
 {
 	return chipco_write32_masked(cc, SSB_CHIPCO_GPIOPOL, mask, value);
 }
-EXPORT_SYMBOL(ssb_chipco_gpio_polarity);
 
 #ifdef CONFIG_SSB_SERIAL
 int ssb_chipco_serial_init(struct ssb_chipcommon *cc,
Index: linux-2.6.23.16/drivers/ssb/driver_extif.c
===================================================================
--- linux-2.6.23.16.orig/drivers/ssb/driver_extif.c	2008-02-19 15:50:42.000000000 +0100
+++ linux-2.6.23.16/drivers/ssb/driver_extif.c	2008-02-19 15:50:44.000000000 +0100
@@ -122,30 +122,25 @@ u32 ssb_extif_gpio_in(struct ssb_extif *
 {
 	return extif_read32(extif, SSB_EXTIF_GPIO_IN) & mask;
 }
-EXPORT_SYMBOL(ssb_extif_gpio_in);
 
 u32 ssb_extif_gpio_out(struct ssb_extif *extif, u32 mask, u32 value)
 {
 	return extif_write32_masked(extif, SSB_EXTIF_GPIO_OUT(0),
 				   mask, value);
 }
-EXPORT_SYMBOL(ssb_extif_gpio_out);
 
 u32 ssb_extif_gpio_outen(struct ssb_extif *extif, u32 mask, u32 value)
 {
 	return extif_write32_masked(extif, SSB_EXTIF_GPIO_OUTEN(0),
 				   mask, value);
 }
-EXPORT_SYMBOL(ssb_extif_gpio_outen);
 
 u32 ssb_extif_gpio_polarity(struct ssb_extif *extif, u32 mask, u32 value)
 {
 	return extif_write32_masked(extif, SSB_EXTIF_GPIO_INTPOL, mask, value);
 }
-EXPORT_SYMBOL(ssb_extif_gpio_polarity);
 
 u32 ssb_extif_gpio_intmask(struct ssb_extif *extif, u32 mask, u32 value)
 {
 	return extif_write32_masked(extif, SSB_EXTIF_GPIO_INTMASK, mask, value);
 }
-EXPORT_SYMBOL(ssb_extif_gpio_intmask);
Index: linux-2.6.23.16/drivers/ssb/embedded.c
===================================================================
--- linux-2.6.23.16.orig/drivers/ssb/embedded.c	2008-02-19 15:50:42.000000000 +0100
+++ linux-2.6.23.16/drivers/ssb/embedded.c	2008-02-19 15:51:01.000000000 +0100
@@ -11,6 +11,8 @@
 #include <linux/ssb/ssb.h>
 #include <linux/ssb/ssb_embedded.h>
 
+#include "ssb_private.h"
+
 
 int ssb_watchdog_timer_set(struct ssb_bus *bus, u32 ticks)
 {
@@ -24,3 +26,107 @@ int ssb_watchdog_timer_set(struct ssb_bu
 	}
 	return -ENODEV;
 }
+
+u32 ssb_gpio_in(struct ssb_bus *bus, u32 mask)
+{
+	unsigned long flags;
+	u32 res = 0;
+
+	spin_lock_irqsave(&bus->gpio_lock, flags);
+	if (ssb_chipco_available(&bus->chipco))
+		res = ssb_chipco_gpio_in(&bus->chipco, mask);
+	else if (ssb_extif_available(&bus->extif))
+		res = ssb_extif_gpio_in(&bus->extif, mask);
+	else
+		SSB_WARN_ON(1);
+	spin_unlock_irqrestore(&bus->gpio_lock, flags);
+
+	return res;
+}
+EXPORT_SYMBOL(ssb_gpio_in);
+
+u32 ssb_gpio_out(struct ssb_bus *bus, u32 mask, u32 value)
+{
+	unsigned long flags;
+	u32 res = 0;
+
+	spin_lock_irqsave(&bus->gpio_lock, flags);
+	if (ssb_chipco_available(&bus->chipco))
+		res = ssb_chipco_gpio_out(&bus->chipco, mask, value);
+	else if (ssb_extif_available(&bus->extif))
+		res = ssb_extif_gpio_out(&bus->extif, mask, value);
+	else
+		SSB_WARN_ON(1);
+	spin_unlock_irqrestore(&bus->gpio_lock, flags);
+
+	return res;
+}
+EXPORT_SYMBOL(ssb_gpio_out);
+
+u32 ssb_gpio_outen(struct ssb_bus *bus, u32 mask, u32 value)
+{
+	unsigned long flags;
+	u32 res = 0;
+
+	spin_lock_irqsave(&bus->gpio_lock, flags);
+	if (ssb_chipco_available(&bus->chipco))
+		res = ssb_chipco_gpio_outen(&bus->chipco, mask, value);
+	else if (ssb_extif_available(&bus->extif))
+		res = ssb_extif_gpio_outen(&bus->extif, mask, value);
+	else
+		SSB_WARN_ON(1);
+	spin_unlock_irqrestore(&bus->gpio_lock, flags);
+
+	return res;
+}
+EXPORT_SYMBOL(ssb_gpio_outen);
+
+u32 ssb_gpio_control(struct ssb_bus *bus, u32 mask, u32 value)
+{
+	unsigned long flags;
+	u32 res = 0;
+
+	spin_lock_irqsave(&bus->gpio_lock, flags);
+	if (ssb_chipco_available(&bus->chipco))
+		res = ssb_chipco_gpio_control(&bus->chipco, mask, value);
+	spin_unlock_irqrestore(&bus->gpio_lock, flags);
+
+	return res;
+}
+EXPORT_SYMBOL(ssb_gpio_control);
+
+u32 ssb_gpio_intmask(struct ssb_bus *bus, u32 mask, u32 value)
+{
+	unsigned long flags;
+	u32 res = 0;
+
+	spin_lock_irqsave(&bus->gpio_lock, flags);
+	if (ssb_chipco_available(&bus->chipco))
+		res = ssb_chipco_gpio_intmask(&bus->chipco, mask, value);
+	else if (ssb_extif_available(&bus->extif))
+		res = ssb_extif_gpio_intmask(&bus->extif, mask, value);
+	else
+		SSB_WARN_ON(1);
+	spin_unlock_irqrestore(&bus->gpio_lock, flags);
+
+	return res;
+}
+EXPORT_SYMBOL(ssb_gpio_intmask);
+
+u32 ssb_gpio_polarity(struct ssb_bus *bus, u32 mask, u32 value)
+{
+	unsigned long flags;
+	u32 res = 0;
+
+	spin_lock_irqsave(&bus->gpio_lock, flags);
+	if (ssb_chipco_available(&bus->chipco))
+		res = ssb_chipco_gpio_polarity(&bus->chipco, mask, value);
+	else if (ssb_extif_available(&bus->extif))
+		res = ssb_extif_gpio_polarity(&bus->extif, mask, value);
+	else
+		SSB_WARN_ON(1);
+	spin_unlock_irqrestore(&bus->gpio_lock, flags);
+
+	return res;
+}
+EXPORT_SYMBOL(ssb_gpio_polarity);
Index: linux-2.6.23.16/include/linux/ssb/ssb.h
===================================================================
--- linux-2.6.23.16.orig/include/linux/ssb/ssb.h	2008-02-19 15:50:42.000000000 +0100
+++ linux-2.6.23.16/include/linux/ssb/ssb.h	2008-02-19 15:50:44.000000000 +0100
@@ -283,6 +283,11 @@ struct ssb_bus {
 	/* Contents of the SPROM. */
 	struct ssb_sprom sprom;
 
+#ifdef CONFIG_SSB_EMBEDDED
+	/* Lock for GPIO register access. */
+	spinlock_t gpio_lock;
+#endif /* EMBEDDED */
+
 	/* Internal-only stuff follows. Do not touch. */
 	struct list_head list;
 #ifdef CONFIG_SSB_DEBUG
Index: linux-2.6.23.16/include/linux/ssb/ssb_embedded.h
===================================================================
--- linux-2.6.23.16.orig/include/linux/ssb/ssb_embedded.h	2008-02-19 15:50:42.000000000 +0100
+++ linux-2.6.23.16/include/linux/ssb/ssb_embedded.h	2008-02-19 15:50:44.000000000 +0100
@@ -7,4 +7,12 @@
 
 extern int ssb_watchdog_timer_set(struct ssb_bus *bus, u32 ticks);
 
+/* Generic GPIO API */
+u32 ssb_gpio_in(struct ssb_bus *bus, u32 mask);
+u32 ssb_gpio_out(struct ssb_bus *bus, u32 mask, u32 value);
+u32 ssb_gpio_outen(struct ssb_bus *bus, u32 mask, u32 value);
+u32 ssb_gpio_control(struct ssb_bus *bus, u32 mask, u32 value);
+u32 ssb_gpio_intmask(struct ssb_bus *bus, u32 mask, u32 value);
+u32 ssb_gpio_polarity(struct ssb_bus *bus, u32 mask, u32 value);
+
 #endif /* LINUX_SSB_EMBEDDED_H_ */
Index: linux-2.6.23.16/drivers/ssb/main.c
===================================================================
--- linux-2.6.23.16.orig/drivers/ssb/main.c	2008-02-19 15:50:42.000000000 +0100
+++ linux-2.6.23.16/drivers/ssb/main.c	2008-02-19 15:50:44.000000000 +0100
@@ -571,6 +571,9 @@ static int ssb_bus_register(struct ssb_b
 
 	spin_lock_init(&bus->bar_lock);
 	INIT_LIST_HEAD(&bus->list);
+#ifdef CONFIG_SSB_EMBEDDED
+	spin_lock_init(&bus->gpio_lock);
+#endif
 
 	/* Powerup the bus */
 	err = ssb_pci_xtal(bus, SSB_GPIO_XTAL | SSB_GPIO_PLL, 1);