| /* |
| * linux/drivers/pcmcia/soc_common.h |
| * |
| * Copyright (C) 2000 John G Dorsey <john+@cs.cmu.edu> |
| * |
| * This file contains definitions for the PCMCIA support code common to |
| * integrated SOCs like the SA-11x0 and PXA2xx microprocessors. |
| */ |
| #ifndef _ASM_ARCH_PCMCIA |
| #define _ASM_ARCH_PCMCIA |
| |
| /* include the world */ |
| #include <linux/clk.h> |
| #include <linux/cpufreq.h> |
| #include <pcmcia/ss.h> |
| #include <pcmcia/cistpl.h> |
| |
| |
| struct device; |
| struct pcmcia_low_level; |
| |
| /* |
| * This structure encapsulates per-socket state which we might need to |
| * use when responding to a Card Services query of some kind. |
| */ |
| struct soc_pcmcia_socket { |
| struct pcmcia_socket socket; |
| |
| /* |
| * Info from low level handler |
| */ |
| unsigned int nr; |
| struct clk *clk; |
| |
| /* |
| * Core PCMCIA state |
| */ |
| const struct pcmcia_low_level *ops; |
| |
| unsigned int status; |
| socket_state_t cs_state; |
| |
| unsigned short spd_io[MAX_IO_WIN]; |
| unsigned short spd_mem[MAX_WIN]; |
| unsigned short spd_attr[MAX_WIN]; |
| |
| struct resource res_skt; |
| struct resource res_io; |
| struct resource res_mem; |
| struct resource res_attr; |
| void __iomem *virt_io; |
| |
| struct { |
| int gpio; |
| unsigned int irq; |
| const char *name; |
| } stat[4]; |
| #define SOC_STAT_CD 0 /* Card detect */ |
| #define SOC_STAT_BVD1 1 /* BATDEAD / IOSTSCHG */ |
| #define SOC_STAT_BVD2 2 /* BATWARN / IOSPKR */ |
| #define SOC_STAT_RDY 3 /* Ready / Interrupt */ |
| |
| unsigned int irq_state; |
| |
| struct timer_list poll_timer; |
| struct list_head node; |
| }; |
| |
| struct skt_dev_info { |
| int nskt; |
| struct clk *clk; |
| struct soc_pcmcia_socket skt[0]; |
| }; |
| |
| struct pcmcia_state { |
| unsigned detect: 1, |
| ready: 1, |
| bvd1: 1, |
| bvd2: 1, |
| wrprot: 1, |
| vs_3v: 1, |
| vs_Xv: 1; |
| }; |
| |
| struct pcmcia_low_level { |
| struct module *owner; |
| |
| /* first socket in system */ |
| int first; |
| /* nr of sockets */ |
| int nr; |
| |
| int (*hw_init)(struct soc_pcmcia_socket *); |
| void (*hw_shutdown)(struct soc_pcmcia_socket *); |
| |
| void (*socket_state)(struct soc_pcmcia_socket *, struct pcmcia_state *); |
| int (*configure_socket)(struct soc_pcmcia_socket *, const socket_state_t *); |
| |
| /* |
| * Enable card status IRQs on (re-)initialisation. This can |
| * be called at initialisation, power management event, or |
| * pcmcia event. |
| */ |
| void (*socket_init)(struct soc_pcmcia_socket *); |
| |
| /* |
| * Disable card status IRQs and PCMCIA bus on suspend. |
| */ |
| void (*socket_suspend)(struct soc_pcmcia_socket *); |
| |
| /* |
| * Hardware specific timing routines. |
| * If provided, the get_timing routine overrides the SOC default. |
| */ |
| unsigned int (*get_timing)(struct soc_pcmcia_socket *, unsigned int, unsigned int); |
| int (*set_timing)(struct soc_pcmcia_socket *); |
| int (*show_timing)(struct soc_pcmcia_socket *, char *); |
| |
| #ifdef CONFIG_CPU_FREQ |
| /* |
| * CPUFREQ support. |
| */ |
| int (*frequency_change)(struct soc_pcmcia_socket *, unsigned long, struct cpufreq_freqs *); |
| #endif |
| }; |
| |
| |
| struct pcmcia_irqs { |
| int sock; |
| int irq; |
| const char *str; |
| }; |
| |
| struct soc_pcmcia_timing { |
| unsigned short io; |
| unsigned short mem; |
| unsigned short attr; |
| }; |
| |
| extern int soc_pcmcia_request_irqs(struct soc_pcmcia_socket *skt, struct pcmcia_irqs *irqs, int nr); |
| extern void soc_pcmcia_free_irqs(struct soc_pcmcia_socket *skt, struct pcmcia_irqs *irqs, int nr); |
| extern void soc_pcmcia_disable_irqs(struct soc_pcmcia_socket *skt, struct pcmcia_irqs *irqs, int nr); |
| extern void soc_pcmcia_enable_irqs(struct soc_pcmcia_socket *skt, struct pcmcia_irqs *irqs, int nr); |
| extern void soc_common_pcmcia_get_timing(struct soc_pcmcia_socket *, struct soc_pcmcia_timing *); |
| |
| void soc_pcmcia_init_one(struct soc_pcmcia_socket *skt, |
| struct pcmcia_low_level *ops, struct device *dev); |
| void soc_pcmcia_remove_one(struct soc_pcmcia_socket *skt); |
| int soc_pcmcia_add_one(struct soc_pcmcia_socket *skt); |
| |
| |
| #ifdef CONFIG_PCMCIA_DEBUG |
| |
| extern void soc_pcmcia_debug(struct soc_pcmcia_socket *skt, const char *func, |
| int lvl, const char *fmt, ...); |
| |
| #define debug(skt, lvl, fmt, arg...) \ |
| soc_pcmcia_debug(skt, __func__, lvl, fmt , ## arg) |
| |
| #else |
| #define debug(skt, lvl, fmt, arg...) do { } while (0) |
| #endif |
| |
| |
| /* |
| * The PC Card Standard, Release 7, section 4.13.4, says that twIORD |
| * has a minimum value of 165ns. Section 4.13.5 says that twIOWR has |
| * a minimum value of 165ns, as well. Section 4.7.2 (describing |
| * common and attribute memory write timing) says that twWE has a |
| * minimum value of 150ns for a 250ns cycle time (for 5V operation; |
| * see section 4.7.4), or 300ns for a 600ns cycle time (for 3.3V |
| * operation, also section 4.7.4). Section 4.7.3 says that taOE |
| * has a maximum value of 150ns for a 300ns cycle time (for 5V |
| * operation), or 300ns for a 600ns cycle time (for 3.3V operation). |
| * |
| * When configuring memory maps, Card Services appears to adopt the policy |
| * that a memory access time of "0" means "use the default." The default |
| * PCMCIA I/O command width time is 165ns. The default PCMCIA 5V attribute |
| * and memory command width time is 150ns; the PCMCIA 3.3V attribute and |
| * memory command width time is 300ns. |
| */ |
| #define SOC_PCMCIA_IO_ACCESS (165) |
| #define SOC_PCMCIA_5V_MEM_ACCESS (150) |
| #define SOC_PCMCIA_3V_MEM_ACCESS (300) |
| #define SOC_PCMCIA_ATTR_MEM_ACCESS (300) |
| |
| /* |
| * The socket driver actually works nicely in interrupt-driven form, |
| * so the (relatively infrequent) polling is "just to be sure." |
| */ |
| #define SOC_PCMCIA_POLL_PERIOD (2*HZ) |
| |
| |
| /* I/O pins replacing memory pins |
| * (PCMCIA System Architecture, 2nd ed., by Don Anderson, p.75) |
| * |
| * These signals change meaning when going from memory-only to |
| * memory-or-I/O interface: |
| */ |
| #define iostschg bvd1 |
| #define iospkr bvd2 |
| |
| #endif |