blob: 3fba3a679128b10547714cd672461c0ba9e563b0 [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
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>
Linus Torvalds1da177e2005-04-16 15:20:36 -070014#include <pcmcia/cs.h>
15#include <pcmcia/ss.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070016#include <pcmcia/cistpl.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070017
18
19struct device;
20struct pcmcia_low_level;
21
22/*
23 * This structure encapsulates per-socket state which we might need to
24 * use when responding to a Card Services query of some kind.
25 */
26struct soc_pcmcia_socket {
27 struct pcmcia_socket socket;
28
29 /*
30 * Info from low level handler
31 */
Linus Torvalds1da177e2005-04-16 15:20:36 -070032 unsigned int nr;
Linus Torvalds1da177e2005-04-16 15:20:36 -070033
34 /*
35 * Core PCMCIA state
36 */
Russell King - ARM Linuxb62d99b2009-03-29 22:14:32 +010037 const struct pcmcia_low_level *ops;
Linus Torvalds1da177e2005-04-16 15:20:36 -070038
39 unsigned int status;
40 socket_state_t cs_state;
41
42 unsigned short spd_io[MAX_IO_WIN];
43 unsigned short spd_mem[MAX_WIN];
44 unsigned short spd_attr[MAX_WIN];
45
46 struct resource res_skt;
47 struct resource res_io;
48 struct resource res_mem;
49 struct resource res_attr;
50 void __iomem *virt_io;
51
52 unsigned int irq_state;
53
54 struct timer_list poll_timer;
55 struct list_head node;
56};
57
Eric Miaob393c692009-01-19 17:34:27 +080058struct skt_dev_info {
59 int nskt;
60 struct soc_pcmcia_socket skt[0];
61};
62
Linus Torvalds1da177e2005-04-16 15:20:36 -070063struct pcmcia_state {
64 unsigned detect: 1,
65 ready: 1,
66 bvd1: 1,
67 bvd2: 1,
68 wrprot: 1,
69 vs_3v: 1,
70 vs_Xv: 1;
71};
72
73struct pcmcia_low_level {
74 struct module *owner;
75
76 /* first socket in system */
77 int first;
78 /* nr of sockets */
79 int nr;
80
81 int (*hw_init)(struct soc_pcmcia_socket *);
82 void (*hw_shutdown)(struct soc_pcmcia_socket *);
83
84 void (*socket_state)(struct soc_pcmcia_socket *, struct pcmcia_state *);
85 int (*configure_socket)(struct soc_pcmcia_socket *, const socket_state_t *);
86
87 /*
88 * Enable card status IRQs on (re-)initialisation. This can
89 * be called at initialisation, power management event, or
90 * pcmcia event.
91 */
92 void (*socket_init)(struct soc_pcmcia_socket *);
93
94 /*
95 * Disable card status IRQs and PCMCIA bus on suspend.
96 */
97 void (*socket_suspend)(struct soc_pcmcia_socket *);
98
99 /*
100 * Hardware specific timing routines.
101 * If provided, the get_timing routine overrides the SOC default.
102 */
103 unsigned int (*get_timing)(struct soc_pcmcia_socket *, unsigned int, unsigned int);
104 int (*set_timing)(struct soc_pcmcia_socket *);
105 int (*show_timing)(struct soc_pcmcia_socket *, char *);
106
107#ifdef CONFIG_CPU_FREQ
108 /*
109 * CPUFREQ support.
110 */
111 int (*frequency_change)(struct soc_pcmcia_socket *, unsigned long, struct cpufreq_freqs *);
112#endif
113};
114
115
116struct pcmcia_irqs {
117 int sock;
118 int irq;
119 const char *str;
120};
121
122struct soc_pcmcia_timing {
123 unsigned short io;
124 unsigned short mem;
125 unsigned short attr;
126};
127
128extern int soc_pcmcia_request_irqs(struct soc_pcmcia_socket *skt, struct pcmcia_irqs *irqs, int nr);
129extern void soc_pcmcia_free_irqs(struct soc_pcmcia_socket *skt, struct pcmcia_irqs *irqs, int nr);
130extern void soc_pcmcia_disable_irqs(struct soc_pcmcia_socket *skt, struct pcmcia_irqs *irqs, int nr);
131extern void soc_pcmcia_enable_irqs(struct soc_pcmcia_socket *skt, struct pcmcia_irqs *irqs, int nr);
132extern void soc_common_pcmcia_get_timing(struct soc_pcmcia_socket *, struct soc_pcmcia_timing *);
133
134
Russell King - ARM Linux097e2962009-03-26 21:45:05 +0000135void soc_pcmcia_remove_one(struct soc_pcmcia_socket *skt);
136int soc_pcmcia_add_one(struct soc_pcmcia_socket *skt);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700137
Linus Torvalds1da177e2005-04-16 15:20:36 -0700138
Dominik Brodowski7d16b652008-08-02 21:02:01 +0200139#ifdef CONFIG_PCMCIA_DEBUG
Linus Torvalds1da177e2005-04-16 15:20:36 -0700140
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