From 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 Mon Sep 17 00:00:00 2001 From: Yunhong Jiang Date: Tue, 4 Aug 2015 12:17:53 -0700 Subject: Add the rt linux 4.1.3-rt3 as base Import the rt linux 4.1.3-rt3 as OPNFV kvm base. It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and the base is: commit 0917f823c59692d751951bf5ea699a2d1e2f26a2 Author: Sebastian Andrzej Siewior Date: Sat Jul 25 12:13:34 2015 +0200 Prepare v4.1.3-rt3 Signed-off-by: Sebastian Andrzej Siewior We lose all the git history this way and it's not good. We should apply another opnfv project repo in future. Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423 Signed-off-by: Yunhong Jiang --- kernel/drivers/pcmcia/soc_common.h | 193 +++++++++++++++++++++++++++++++++++++ 1 file changed, 193 insertions(+) create mode 100644 kernel/drivers/pcmcia/soc_common.h (limited to 'kernel/drivers/pcmcia/soc_common.h') diff --git a/kernel/drivers/pcmcia/soc_common.h b/kernel/drivers/pcmcia/soc_common.h new file mode 100644 index 000000000..e6fcbea5b --- /dev/null +++ b/kernel/drivers/pcmcia/soc_common.h @@ -0,0 +1,193 @@ +/* + * linux/drivers/pcmcia/soc_common.h + * + * Copyright (C) 2000 John G Dorsey + * + * 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 +#include +#include +#include + + +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 -- cgit 1.2.3-korg