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Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6
[linux-2.6-block.git] / drivers / pcmcia / soc_common.h
CommitLineData
1da177e4
LT		 1/*
2 * linux/drivers/pcmcia/soc_common.h
3 *
4 * Copyright (C) 2000 John G Dorsey <john+@cs.cmu.edu>
5 *
6 * This file contains definitions for the PCMCIA support code common to
7 * integrated SOCs like the SA-11x0 and PXA2xx microprocessors.
8 */
9#ifndef _ASM_ARCH_PCMCIA
10#define _ASM_ARCH_PCMCIA
11
12/* include the world */
13#include <linux/cpufreq.h>
1da177e4
LT		 14#include <pcmcia/cs_types.h>
15#include <pcmcia/cs.h>
16#include <pcmcia/ss.h>
1da177e4 17#include <pcmcia/cistpl.h>
1da177e4
LT		 18
19
20struct device;
21struct pcmcia_low_level;
22
23/*
24 * This structure encapsulates per-socket state which we might need to
25 * use when responding to a Card Services query of some kind.
26 */
27struct soc_pcmcia_socket {
28 struct pcmcia_socket socket;
29
30 /*
31 * Info from low level handler
32 */
33 struct device *dev;
34 unsigned int nr;
35 unsigned int irq;
36
37 /*
38 * Core PCMCIA state
39 */
40 struct pcmcia_low_level *ops;
41
42 unsigned int status;
43 socket_state_t cs_state;
44
45 unsigned short spd_io[MAX_IO_WIN];
46 unsigned short spd_mem[MAX_WIN];
47 unsigned short spd_attr[MAX_WIN];
48
49 struct resource res_skt;
50 struct resource res_io;
51 struct resource res_mem;
52 struct resource res_attr;
53 void __iomem *virt_io;
54
55 unsigned int irq_state;
56
57 struct timer_list poll_timer;
58 struct list_head node;
59};
60
61struct pcmcia_state {
62 unsigned detect: 1,
63 ready: 1,
64 bvd1: 1,
65 bvd2: 1,
66 wrprot: 1,
67 vs_3v: 1,
68 vs_Xv: 1;
69};
70
71struct pcmcia_low_level {
72 struct module *owner;
73
74 /* first socket in system */
75 int first;
76 /* nr of sockets */
77 int nr;
78
79 int (*hw_init)(struct soc_pcmcia_socket *);
80 void (*hw_shutdown)(struct soc_pcmcia_socket *);
81
82 void (*socket_state)(struct soc_pcmcia_socket *, struct pcmcia_state *);
83 int (*configure_socket)(struct soc_pcmcia_socket *, const socket_state_t *);
84
85 /*
86 * Enable card status IRQs on (re-)initialisation. This can
87 * be called at initialisation, power management event, or
88 * pcmcia event.
89 */
90 void (*socket_init)(struct soc_pcmcia_socket *);
91
92 /*
93 * Disable card status IRQs and PCMCIA bus on suspend.
94 */
95 void (*socket_suspend)(struct soc_pcmcia_socket *);
96
97 /*
98 * Hardware specific timing routines.
99 * If provided, the get_timing routine overrides the SOC default.
100 */
101 unsigned int (*get_timing)(struct soc_pcmcia_socket *, unsigned int, unsigned int);
102 int (*set_timing)(struct soc_pcmcia_socket *);
103 int (*show_timing)(struct soc_pcmcia_socket *, char *);
104
105#ifdef CONFIG_CPU_FREQ
106 /*
107 * CPUFREQ support.
108 */
109 int (*frequency_change)(struct soc_pcmcia_socket *, unsigned long, struct cpufreq_freqs *);
110#endif
111};
112
113
114struct pcmcia_irqs {
115 int sock;
116 int irq;
117 const char *str;
118};
119
120struct soc_pcmcia_timing {
121 unsigned short io;
122 unsigned short mem;
123 unsigned short attr;
124};
125
126extern int soc_pcmcia_request_irqs(struct soc_pcmcia_socket *skt, struct pcmcia_irqs *irqs, int nr);
127extern void soc_pcmcia_free_irqs(struct soc_pcmcia_socket *skt, struct pcmcia_irqs *irqs, int nr);
128extern void soc_pcmcia_disable_irqs(struct soc_pcmcia_socket *skt, struct pcmcia_irqs *irqs, int nr);
129extern void soc_pcmcia_enable_irqs(struct soc_pcmcia_socket *skt, struct pcmcia_irqs *irqs, int nr);
130extern void soc_common_pcmcia_get_timing(struct soc_pcmcia_socket *, struct soc_pcmcia_timing *);
131
132
133extern struct list_head soc_pcmcia_sockets;
1da177e4
LT		 134
135extern int soc_common_drv_pcmcia_probe(struct device *dev, struct pcmcia_low_level *ops, int first, int nr);
136extern int soc_common_drv_pcmcia_remove(struct device *dev);
137
138
7d16b658 139#ifdef CONFIG_PCMCIA_DEBUG
1da177e4
LT		 140
141extern void soc_pcmcia_debug(struct soc_pcmcia_socket *skt, const char *func,
142 int lvl, const char *fmt, ...);
143
144#define debug(skt, lvl, fmt, arg...) \
145 soc_pcmcia_debug(skt, __func__, lvl, fmt , ## arg)
146
147#else
148#define debug(skt, lvl, fmt, arg...) do { } while (0)
149#endif
150
151
152/*
153 * The PC Card Standard, Release 7, section 4.13.4, says that twIORD
154 * has a minimum value of 165ns. Section 4.13.5 says that twIOWR has
155 * a minimum value of 165ns, as well. Section 4.7.2 (describing
156 * common and attribute memory write timing) says that twWE has a
157 * minimum value of 150ns for a 250ns cycle time (for 5V operation;
158 * see section 4.7.4), or 300ns for a 600ns cycle time (for 3.3V
159 * operation, also section 4.7.4). Section 4.7.3 says that taOE
160 * has a maximum value of 150ns for a 300ns cycle time (for 5V
161 * operation), or 300ns for a 600ns cycle time (for 3.3V operation).
162 *
163 * When configuring memory maps, Card Services appears to adopt the policy
164 * that a memory access time of "0" means "use the default." The default
165 * PCMCIA I/O command width time is 165ns. The default PCMCIA 5V attribute
166 * and memory command width time is 150ns; the PCMCIA 3.3V attribute and
167 * memory command width time is 300ns.
168 */
169#define SOC_PCMCIA_IO_ACCESS (165)
170#define SOC_PCMCIA_5V_MEM_ACCESS (150)
171#define SOC_PCMCIA_3V_MEM_ACCESS (300)
172#define SOC_PCMCIA_ATTR_MEM_ACCESS (300)
173
174/*
175 * The socket driver actually works nicely in interrupt-driven form,
176 * so the (relatively infrequent) polling is "just to be sure."
177 */
178#define SOC_PCMCIA_POLL_PERIOD (2*HZ)
179
180
181/* I/O pins replacing memory pins
182 * (PCMCIA System Architecture, 2nd ed., by Don Anderson, p.75)
183 *
184 * These signals change meaning when going from memory-only to
185 * memory-or-I/O interface:
186 */
187#define iostschg bvd1
188#define iospkr bvd2
189
190#endif
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