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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 */ | |
2a125dd5 | 13 | #include <linux/clk.h> |
1da177e4 | 14 | #include <linux/cpufreq.h> |
1da177e4 | 15 | #include <pcmcia/ss.h> |
1da177e4 | 16 | #include <pcmcia/cistpl.h> |
1da177e4 LT |
17 | |
18 | ||
19 | struct device; | |
20 | struct 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 | */ | |
26 | struct soc_pcmcia_socket { | |
27 | struct pcmcia_socket socket; | |
28 | ||
29 | /* | |
30 | * Info from low level handler | |
31 | */ | |
1da177e4 | 32 | unsigned int nr; |
2a125dd5 | 33 | struct clk *clk; |
1da177e4 LT |
34 | |
35 | /* | |
36 | * Core PCMCIA state | |
37 | */ | |
b62d99b5 | 38 | const struct pcmcia_low_level *ops; |
1da177e4 LT |
39 | |
40 | unsigned int status; | |
41 | socket_state_t cs_state; | |
42 | ||
43 | unsigned short spd_io[MAX_IO_WIN]; | |
44 | unsigned short spd_mem[MAX_WIN]; | |
45 | unsigned short spd_attr[MAX_WIN]; | |
46 | ||
47 | struct resource res_skt; | |
48 | struct resource res_io; | |
49 | struct resource res_mem; | |
50 | struct resource res_attr; | |
51 | void __iomem *virt_io; | |
52 | ||
d9dc8787 RK |
53 | struct { |
54 | int gpio; | |
55 | unsigned int irq; | |
56 | const char *name; | |
57 | } stat[4]; | |
58 | #define SOC_STAT_CD 0 /* Card detect */ | |
59 | #define SOC_STAT_BVD1 1 /* BATDEAD / IOSTSCHG */ | |
60 | #define SOC_STAT_BVD2 2 /* BATWARN / IOSPKR */ | |
61 | #define SOC_STAT_RDY 3 /* Ready / Interrupt */ | |
62 | ||
1da177e4 LT |
63 | unsigned int irq_state; |
64 | ||
65 | struct timer_list poll_timer; | |
66 | struct list_head node; | |
67 | }; | |
68 | ||
b393c696 EM |
69 | struct skt_dev_info { |
70 | int nskt; | |
71 | struct soc_pcmcia_socket skt[0]; | |
72 | }; | |
73 | ||
1da177e4 LT |
74 | struct pcmcia_state { |
75 | unsigned detect: 1, | |
76 | ready: 1, | |
77 | bvd1: 1, | |
78 | bvd2: 1, | |
79 | wrprot: 1, | |
80 | vs_3v: 1, | |
81 | vs_Xv: 1; | |
82 | }; | |
83 | ||
84 | struct pcmcia_low_level { | |
85 | struct module *owner; | |
86 | ||
87 | /* first socket in system */ | |
88 | int first; | |
89 | /* nr of sockets */ | |
90 | int nr; | |
91 | ||
92 | int (*hw_init)(struct soc_pcmcia_socket *); | |
93 | void (*hw_shutdown)(struct soc_pcmcia_socket *); | |
94 | ||
95 | void (*socket_state)(struct soc_pcmcia_socket *, struct pcmcia_state *); | |
96 | int (*configure_socket)(struct soc_pcmcia_socket *, const socket_state_t *); | |
97 | ||
98 | /* | |
99 | * Enable card status IRQs on (re-)initialisation. This can | |
100 | * be called at initialisation, power management event, or | |
101 | * pcmcia event. | |
102 | */ | |
103 | void (*socket_init)(struct soc_pcmcia_socket *); | |
104 | ||
105 | /* | |
106 | * Disable card status IRQs and PCMCIA bus on suspend. | |
107 | */ | |
108 | void (*socket_suspend)(struct soc_pcmcia_socket *); | |
109 | ||
110 | /* | |
111 | * Hardware specific timing routines. | |
112 | * If provided, the get_timing routine overrides the SOC default. | |
113 | */ | |
114 | unsigned int (*get_timing)(struct soc_pcmcia_socket *, unsigned int, unsigned int); | |
115 | int (*set_timing)(struct soc_pcmcia_socket *); | |
116 | int (*show_timing)(struct soc_pcmcia_socket *, char *); | |
117 | ||
118 | #ifdef CONFIG_CPU_FREQ | |
119 | /* | |
120 | * CPUFREQ support. | |
121 | */ | |
122 | int (*frequency_change)(struct soc_pcmcia_socket *, unsigned long, struct cpufreq_freqs *); | |
123 | #endif | |
124 | }; | |
125 | ||
126 | ||
1da177e4 LT |
127 | struct soc_pcmcia_timing { |
128 | unsigned short io; | |
129 | unsigned short mem; | |
130 | unsigned short attr; | |
131 | }; | |
132 | ||
1da177e4 LT |
133 | extern void soc_common_pcmcia_get_timing(struct soc_pcmcia_socket *, struct soc_pcmcia_timing *); |
134 | ||
e0d21178 RK |
135 | void soc_pcmcia_init_one(struct soc_pcmcia_socket *skt, |
136 | struct pcmcia_low_level *ops, struct device *dev); | |
097e296d RKAL |
137 | void soc_pcmcia_remove_one(struct soc_pcmcia_socket *skt); |
138 | int soc_pcmcia_add_one(struct soc_pcmcia_socket *skt); | |
1da177e4 | 139 | |
1da177e4 | 140 | |
7d16b658 | 141 | #ifdef CONFIG_PCMCIA_DEBUG |
1da177e4 LT |
142 | |
143 | extern void soc_pcmcia_debug(struct soc_pcmcia_socket *skt, const char *func, | |
144 | int lvl, const char *fmt, ...); | |
145 | ||
146 | #define debug(skt, lvl, fmt, arg...) \ | |
147 | soc_pcmcia_debug(skt, __func__, lvl, fmt , ## arg) | |
148 | ||
149 | #else | |
150 | #define debug(skt, lvl, fmt, arg...) do { } while (0) | |
151 | #endif | |
152 | ||
153 | ||
154 | /* | |
155 | * The PC Card Standard, Release 7, section 4.13.4, says that twIORD | |
156 | * has a minimum value of 165ns. Section 4.13.5 says that twIOWR has | |
157 | * a minimum value of 165ns, as well. Section 4.7.2 (describing | |
158 | * common and attribute memory write timing) says that twWE has a | |
159 | * minimum value of 150ns for a 250ns cycle time (for 5V operation; | |
160 | * see section 4.7.4), or 300ns for a 600ns cycle time (for 3.3V | |
161 | * operation, also section 4.7.4). Section 4.7.3 says that taOE | |
162 | * has a maximum value of 150ns for a 300ns cycle time (for 5V | |
163 | * operation), or 300ns for a 600ns cycle time (for 3.3V operation). | |
164 | * | |
165 | * When configuring memory maps, Card Services appears to adopt the policy | |
166 | * that a memory access time of "0" means "use the default." The default | |
167 | * PCMCIA I/O command width time is 165ns. The default PCMCIA 5V attribute | |
168 | * and memory command width time is 150ns; the PCMCIA 3.3V attribute and | |
169 | * memory command width time is 300ns. | |
170 | */ | |
171 | #define SOC_PCMCIA_IO_ACCESS (165) | |
172 | #define SOC_PCMCIA_5V_MEM_ACCESS (150) | |
173 | #define SOC_PCMCIA_3V_MEM_ACCESS (300) | |
174 | #define SOC_PCMCIA_ATTR_MEM_ACCESS (300) | |
175 | ||
176 | /* | |
177 | * The socket driver actually works nicely in interrupt-driven form, | |
178 | * so the (relatively infrequent) polling is "just to be sure." | |
179 | */ | |
180 | #define SOC_PCMCIA_POLL_PERIOD (2*HZ) | |
181 | ||
182 | ||
183 | /* I/O pins replacing memory pins | |
184 | * (PCMCIA System Architecture, 2nd ed., by Don Anderson, p.75) | |
185 | * | |
186 | * These signals change meaning when going from memory-only to | |
187 | * memory-or-I/O interface: | |
188 | */ | |
189 | #define iostschg bvd1 | |
190 | #define iospkr bvd2 | |
191 | ||
192 | #endif |