Initial import

1 files changed, 193 insertions, 0 deletions

diff --git a/drivers/pcmcia/soc_common.h b/drivers/pcmcia/soc_common.h
new file mode 100644
index 000000000..e6fcbea5b
--- /dev/null
+++ b/drivers/pcmcia/soc_common.h
@@ -0,0 +1,193 @@
+/*
+ * 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 soc_pcmcia_timing {
+	unsigned short io;
+	unsigned short mem;
+	unsigned short attr;
+};
+
+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