2 * linux/drivers/pcmcia/soc_common.h
6 * This file contains definitions for the PCMCIA support code common to
7 * integrated SOCs like the SA-11x0 and PXA2xx microprocessors.
9 #ifndef _ASM_ARCH_PCMCIA
10 #define _ASM_ARCH_PCMCIA
12 /* include the world */
13 #include <linux/clk.h>
14 #include <linux/cpufreq.h>
15 #include <pcmcia/ss.h>
16 #include <pcmcia/cistpl.h>
20 struct pcmcia_low_level;
23 * This structure encapsulates per-socket state which we might need to
24 * use when responding to a Card Services query of some kind.
26 struct soc_pcmcia_socket {
27 struct pcmcia_socket socket;
30 * Info from low level handler
38 const struct pcmcia_low_level *ops;
41 socket_state_t cs_state;
43 unsigned short spd_io[MAX_IO_WIN];
44 unsigned short spd_mem[MAX_WIN];
45 unsigned short spd_attr[MAX_WIN];
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;
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 */
63 unsigned int irq_state;
65 struct timer_list poll_timer;
66 struct list_head node;
72 struct soc_pcmcia_socket skt[0];
85 struct pcmcia_low_level {
88 /* first socket in system */
93 int (*hw_init)(struct soc_pcmcia_socket *);
94 void (*hw_shutdown)(struct soc_pcmcia_socket *);
96 void (*socket_state)(struct soc_pcmcia_socket *, struct pcmcia_state *);
97 int (*configure_socket)(struct soc_pcmcia_socket *, const socket_state_t *);
100 * Enable card status IRQs on (re-)initialisation. This can
101 * be called at initialisation, power management event, or
104 void (*socket_init)(struct soc_pcmcia_socket *);
107 * Disable card status IRQs and PCMCIA bus on suspend.
109 void (*socket_suspend)(struct soc_pcmcia_socket *);
112 * Hardware specific timing routines.
113 * If provided, the get_timing routine overrides the SOC default.
115 unsigned int (*get_timing)(struct soc_pcmcia_socket *, unsigned int, unsigned int);
116 int (*set_timing)(struct soc_pcmcia_socket *);
117 int (*show_timing)(struct soc_pcmcia_socket *, char *);
119 #ifdef CONFIG_CPU_FREQ
123 int (*frequency_change)(struct soc_pcmcia_socket *, unsigned long, struct cpufreq_freqs *);
134 struct soc_pcmcia_timing {
140 extern int soc_pcmcia_request_irqs(struct soc_pcmcia_socket *skt, struct pcmcia_irqs *irqs, int nr);
141 extern void soc_pcmcia_free_irqs(struct soc_pcmcia_socket *skt, struct pcmcia_irqs *irqs, int nr);
142 extern void soc_pcmcia_disable_irqs(struct soc_pcmcia_socket *skt, struct pcmcia_irqs *irqs, int nr);
143 extern void soc_pcmcia_enable_irqs(struct soc_pcmcia_socket *skt, struct pcmcia_irqs *irqs, int nr);
144 extern void soc_common_pcmcia_get_timing(struct soc_pcmcia_socket *, struct soc_pcmcia_timing *);
146 void soc_pcmcia_init_one(struct soc_pcmcia_socket *skt,
147 struct pcmcia_low_level *ops, struct device *dev);
148 void soc_pcmcia_remove_one(struct soc_pcmcia_socket *skt);
149 int soc_pcmcia_add_one(struct soc_pcmcia_socket *skt);
152 #ifdef CONFIG_PCMCIA_DEBUG
154 extern void soc_pcmcia_debug(struct soc_pcmcia_socket *skt, const char *func,
155 int lvl, const char *fmt, ...);
157 #define debug(skt, lvl, fmt, arg...) \
158 soc_pcmcia_debug(skt, __func__, lvl, fmt , ## arg)
161 #define debug(skt, lvl, fmt, arg...) do { } while (0)
166 * The PC Card Standard, Release 7, section 4.13.4, says that twIORD
167 * has a minimum value of 165ns. Section 4.13.5 says that twIOWR has
168 * a minimum value of 165ns, as well. Section 4.7.2 (describing
169 * common and attribute memory write timing) says that twWE has a
170 * minimum value of 150ns for a 250ns cycle time (for 5V operation;
171 * see section 4.7.4), or 300ns for a 600ns cycle time (for 3.3V
172 * operation, also section 4.7.4). Section 4.7.3 says that taOE
173 * has a maximum value of 150ns for a 300ns cycle time (for 5V
174 * operation), or 300ns for a 600ns cycle time (for 3.3V operation).
176 * When configuring memory maps, Card Services appears to adopt the policy
177 * that a memory access time of "0" means "use the default." The default
178 * PCMCIA I/O command width time is 165ns. The default PCMCIA 5V attribute
179 * and memory command width time is 150ns; the PCMCIA 3.3V attribute and
180 * memory command width time is 300ns.
182 #define SOC_PCMCIA_IO_ACCESS (165)
183 #define SOC_PCMCIA_5V_MEM_ACCESS (150)
184 #define SOC_PCMCIA_3V_MEM_ACCESS (300)
185 #define SOC_PCMCIA_ATTR_MEM_ACCESS (300)
188 * The socket driver actually works nicely in interrupt-driven form,
189 * so the (relatively infrequent) polling is "just to be sure."
191 #define SOC_PCMCIA_POLL_PERIOD (2*HZ)
194 /* I/O pins replacing memory pins
195 * (PCMCIA System Architecture, 2nd ed., by Don Anderson, p.75)
197 * These signals change meaning when going from memory-only to
198 * memory-or-I/O interface:
200 #define iostschg bvd1