^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0-only
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * cs.c -- Kernel Card Services - core services
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * The initial developer of the original code is David A. Hinds
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) * <dahinds@users.sourceforge.net>. Portions created by David A. Hinds
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) * are Copyright (C) 1999 David A. Hinds. All Rights Reserved.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) * (C) 1999 David A. Hinds
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <linux/moduleparam.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <linux/init.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include <linux/kernel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include <linux/string.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #include <linux/major.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #include <linux/errno.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #include <linux/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #include <linux/mm.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) #include <linux/interrupt.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) #include <linux/timer.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) #include <linux/ioport.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) #include <linux/delay.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) #include <linux/pm.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) #include <linux/device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) #include <linux/kthread.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) #include <linux/freezer.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) #include <asm/irq.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) #include <pcmcia/ss.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) #include <pcmcia/cistpl.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) #include <pcmcia/cisreg.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) #include <pcmcia/ds.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) #include "cs_internal.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) /* Module parameters */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) MODULE_AUTHOR("David Hinds <dahinds@users.sourceforge.net>");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) MODULE_DESCRIPTION("Linux Kernel Card Services");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) MODULE_LICENSE("GPL");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) #define INT_MODULE_PARM(n, v) static int n = v; module_param(n, int, 0444)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) INT_MODULE_PARM(setup_delay, 10); /* centiseconds */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) INT_MODULE_PARM(resume_delay, 20); /* centiseconds */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) INT_MODULE_PARM(shutdown_delay, 3); /* centiseconds */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) INT_MODULE_PARM(vcc_settle, 40); /* centiseconds */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) INT_MODULE_PARM(reset_time, 10); /* usecs */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) INT_MODULE_PARM(unreset_delay, 10); /* centiseconds */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) INT_MODULE_PARM(unreset_check, 10); /* centiseconds */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) INT_MODULE_PARM(unreset_limit, 30); /* unreset_check's */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) /* Access speed for attribute memory windows */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) INT_MODULE_PARM(cis_speed, 300); /* ns */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) socket_state_t dead_socket = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) .csc_mask = SS_DETECT,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) EXPORT_SYMBOL(dead_socket);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) /* List of all sockets, protected by a rwsem */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) LIST_HEAD(pcmcia_socket_list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) EXPORT_SYMBOL(pcmcia_socket_list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) DECLARE_RWSEM(pcmcia_socket_list_rwsem);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) EXPORT_SYMBOL(pcmcia_socket_list_rwsem);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) struct pcmcia_socket *pcmcia_get_socket(struct pcmcia_socket *skt)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) struct device *dev = get_device(&skt->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) if (!dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) return dev_get_drvdata(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) EXPORT_SYMBOL(pcmcia_get_socket);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) void pcmcia_put_socket(struct pcmcia_socket *skt)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) put_device(&skt->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) EXPORT_SYMBOL(pcmcia_put_socket);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) static void pcmcia_release_socket(struct device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) struct pcmcia_socket *socket = dev_get_drvdata(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) complete(&socket->socket_released);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) static int pccardd(void *__skt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) * pcmcia_register_socket - add a new pcmcia socket device
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) * @socket: the &socket to register
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) int pcmcia_register_socket(struct pcmcia_socket *socket)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) struct task_struct *tsk;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) if (!socket || !socket->ops || !socket->dev.parent || !socket->resource_ops)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) dev_dbg(&socket->dev, "pcmcia_register_socket(0x%p)\n", socket->ops);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) /* try to obtain a socket number [yes, it gets ugly if we
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) * register more than 2^sizeof(unsigned int) pcmcia
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) * sockets... but the socket number is deprecated
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) * anyways, so I don't care] */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) down_write(&pcmcia_socket_list_rwsem);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) if (list_empty(&pcmcia_socket_list))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) socket->sock = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) unsigned int found, i = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) struct pcmcia_socket *tmp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) do {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) found = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) list_for_each_entry(tmp, &pcmcia_socket_list, socket_list) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) if (tmp->sock == i)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) found = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) i++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) } while (!found);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) socket->sock = i - 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) list_add_tail(&socket->socket_list, &pcmcia_socket_list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) up_write(&pcmcia_socket_list_rwsem);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) #ifndef CONFIG_CARDBUS
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) * If we do not support Cardbus, ensure that
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) * the Cardbus socket capability is disabled.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) socket->features &= ~SS_CAP_CARDBUS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) /* set proper values in socket->dev */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) dev_set_drvdata(&socket->dev, socket);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) socket->dev.class = &pcmcia_socket_class;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) dev_set_name(&socket->dev, "pcmcia_socket%u", socket->sock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) /* base address = 0, map = 0 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) socket->cis_mem.flags = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) socket->cis_mem.speed = cis_speed;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) INIT_LIST_HEAD(&socket->cis_cache);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) init_completion(&socket->socket_released);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) init_completion(&socket->thread_done);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) mutex_init(&socket->skt_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) mutex_init(&socket->ops_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) spin_lock_init(&socket->thread_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) if (socket->resource_ops->init) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) mutex_lock(&socket->ops_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) ret = socket->resource_ops->init(socket);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) mutex_unlock(&socket->ops_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) goto err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) tsk = kthread_run(pccardd, socket, "pccardd");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) if (IS_ERR(tsk)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) ret = PTR_ERR(tsk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) goto err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) wait_for_completion(&socket->thread_done);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) if (!socket->thread) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) dev_warn(&socket->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) "PCMCIA: warning: socket thread did not start\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) return -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) pcmcia_parse_events(socket, SS_DETECT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) * Let's try to get the PCMCIA module for 16-bit PCMCIA support.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) * If it fails, it doesn't matter -- we still have 32-bit CardBus
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) * support to offer, so this is not a failure mode.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) request_module_nowait("pcmcia");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) err:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) down_write(&pcmcia_socket_list_rwsem);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) list_del(&socket->socket_list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) up_write(&pcmcia_socket_list_rwsem);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) } /* pcmcia_register_socket */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) EXPORT_SYMBOL(pcmcia_register_socket);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) * pcmcia_unregister_socket - remove a pcmcia socket device
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) * @socket: the &socket to unregister
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) void pcmcia_unregister_socket(struct pcmcia_socket *socket)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) if (!socket)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) dev_dbg(&socket->dev, "pcmcia_unregister_socket(0x%p)\n", socket->ops);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) if (socket->thread)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) kthread_stop(socket->thread);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) /* remove from our own list */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) down_write(&pcmcia_socket_list_rwsem);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) list_del(&socket->socket_list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) up_write(&pcmcia_socket_list_rwsem);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) /* wait for sysfs to drop all references */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) if (socket->resource_ops->exit) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) mutex_lock(&socket->ops_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) socket->resource_ops->exit(socket);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) mutex_unlock(&socket->ops_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) wait_for_completion(&socket->socket_released);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) } /* pcmcia_unregister_socket */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) EXPORT_SYMBOL(pcmcia_unregister_socket);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) struct pcmcia_socket *pcmcia_get_socket_by_nr(unsigned int nr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) struct pcmcia_socket *s;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) down_read(&pcmcia_socket_list_rwsem);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) list_for_each_entry(s, &pcmcia_socket_list, socket_list)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) if (s->sock == nr) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) up_read(&pcmcia_socket_list_rwsem);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) return s;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) up_read(&pcmcia_socket_list_rwsem);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) EXPORT_SYMBOL(pcmcia_get_socket_by_nr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) static int socket_reset(struct pcmcia_socket *skt)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) int status, i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) dev_dbg(&skt->dev, "reset\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) skt->socket.flags |= SS_OUTPUT_ENA | SS_RESET;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) skt->ops->set_socket(skt, &skt->socket);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) udelay((long)reset_time);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) skt->socket.flags &= ~SS_RESET;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) skt->ops->set_socket(skt, &skt->socket);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) msleep(unreset_delay * 10);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) for (i = 0; i < unreset_limit; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) skt->ops->get_status(skt, &status);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) if (!(status & SS_DETECT))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) if (status & SS_READY)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) msleep(unreset_check * 10);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) dev_err(&skt->dev, "time out after reset\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) return -ETIMEDOUT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) * socket_setup() and socket_shutdown() are called by the main event handler
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) * when card insertion and removal events are received.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) * socket_setup() turns on socket power and resets the socket, in two stages.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) * socket_shutdown() unconfigures a socket and turns off socket power.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) static void socket_shutdown(struct pcmcia_socket *s)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) int status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) dev_dbg(&s->dev, "shutdown\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) if (s->callback)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) s->callback->remove(s);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) mutex_lock(&s->ops_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) s->state &= SOCKET_INUSE | SOCKET_PRESENT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) msleep(shutdown_delay * 10);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) s->state &= SOCKET_INUSE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) /* Blank out the socket state */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) s->socket = dead_socket;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) s->ops->init(s);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) s->ops->set_socket(s, &s->socket);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) s->lock_count = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) kfree(s->fake_cis);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) s->fake_cis = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) s->functions = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) /* From here on we can be sure that only we (that is, the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) * pccardd thread) accesses this socket, and all (16-bit)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) * PCMCIA interactions are gone. Therefore, release
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) * ops_mutex so that we don't get a sysfs-related lockdep
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) * warning.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) mutex_unlock(&s->ops_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) #ifdef CONFIG_CARDBUS
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) cb_free(s);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) /* give socket some time to power down */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) msleep(100);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) s->ops->get_status(s, &status);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) if (status & SS_POWERON) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) dev_err(&s->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) "*** DANGER *** unable to remove socket power\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) s->state &= ~SOCKET_INUSE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) static int socket_setup(struct pcmcia_socket *skt, int initial_delay)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) int status, i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) dev_dbg(&skt->dev, "setup\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) skt->ops->get_status(skt, &status);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) if (!(status & SS_DETECT))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) msleep(initial_delay * 10);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) for (i = 0; i < 100; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) skt->ops->get_status(skt, &status);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) if (!(status & SS_DETECT))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) if (!(status & SS_PENDING))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) msleep(100);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) if (status & SS_PENDING) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) dev_err(&skt->dev, "voltage interrogation timed out\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) return -ETIMEDOUT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360) if (status & SS_CARDBUS) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) if (!(skt->features & SS_CAP_CARDBUS)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362) dev_err(&skt->dev, "cardbus cards are not supported\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365) skt->state |= SOCKET_CARDBUS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) } else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367) skt->state &= ~SOCKET_CARDBUS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) * Decode the card voltage requirements, and apply power to the card.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372) if (status & SS_3VCARD)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373) skt->socket.Vcc = skt->socket.Vpp = 33;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374) else if (!(status & SS_XVCARD))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) skt->socket.Vcc = skt->socket.Vpp = 50;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376) else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377) dev_err(&skt->dev, "unsupported voltage key\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378) return -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381) if (skt->power_hook)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382) skt->power_hook(skt, HOOK_POWER_PRE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384) skt->socket.flags = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385) skt->ops->set_socket(skt, &skt->socket);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388) * Wait "vcc_settle" for the supply to stabilise.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390) msleep(vcc_settle * 10);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392) skt->ops->get_status(skt, &status);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393) if (!(status & SS_POWERON)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394) dev_err(&skt->dev, "unable to apply power\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395) return -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398) status = socket_reset(skt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400) if (skt->power_hook)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401) skt->power_hook(skt, HOOK_POWER_POST);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403) return status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407) * Handle card insertion. Setup the socket, reset the card,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408) * and then tell the rest of PCMCIA that a card is present.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 410) static int socket_insert(struct pcmcia_socket *skt)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 411) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 412) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 413)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 414) dev_dbg(&skt->dev, "insert\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 415)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 416) mutex_lock(&skt->ops_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 417) if (skt->state & SOCKET_INUSE) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 418) mutex_unlock(&skt->ops_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 419) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 420) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 421) skt->state |= SOCKET_INUSE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 422)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 423) ret = socket_setup(skt, setup_delay);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 424) if (ret == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 425) skt->state |= SOCKET_PRESENT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 426)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 427) dev_notice(&skt->dev, "pccard: %s card inserted into slot %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 428) (skt->state & SOCKET_CARDBUS) ? "CardBus" : "PCMCIA",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 429) skt->sock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 430)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 431) #ifdef CONFIG_CARDBUS
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 432) if (skt->state & SOCKET_CARDBUS) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 433) cb_alloc(skt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 434) skt->state |= SOCKET_CARDBUS_CONFIG;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 435) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 436) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 437) dev_dbg(&skt->dev, "insert done\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 438) mutex_unlock(&skt->ops_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 439)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 440) if (!(skt->state & SOCKET_CARDBUS) && (skt->callback))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 441) skt->callback->add(skt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 442) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 443) mutex_unlock(&skt->ops_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 444) socket_shutdown(skt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 445) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 446)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 447) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 448) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 449)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 450) static int socket_suspend(struct pcmcia_socket *skt)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 451) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 452) if ((skt->state & SOCKET_SUSPEND) && !(skt->state & SOCKET_IN_RESUME))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 453) return -EBUSY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 454)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 455) mutex_lock(&skt->ops_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 456) /* store state on first suspend, but not after spurious wakeups */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 457) if (!(skt->state & SOCKET_IN_RESUME))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 458) skt->suspended_state = skt->state;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 459)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 460) skt->socket = dead_socket;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 461) skt->ops->set_socket(skt, &skt->socket);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 462) if (skt->ops->suspend)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 463) skt->ops->suspend(skt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 464) skt->state |= SOCKET_SUSPEND;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 465) skt->state &= ~SOCKET_IN_RESUME;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 466) mutex_unlock(&skt->ops_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 467) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 468) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 469)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 470) static int socket_early_resume(struct pcmcia_socket *skt)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 471) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 472) mutex_lock(&skt->ops_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 473) skt->socket = dead_socket;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 474) skt->ops->init(skt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 475) skt->ops->set_socket(skt, &skt->socket);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 476) if (skt->state & SOCKET_PRESENT)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 477) skt->resume_status = socket_setup(skt, resume_delay);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 478) skt->state |= SOCKET_IN_RESUME;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 479) mutex_unlock(&skt->ops_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 480) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 481) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 482)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 483) static int socket_late_resume(struct pcmcia_socket *skt)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 484) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 485) int ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 486)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 487) mutex_lock(&skt->ops_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 488) skt->state &= ~(SOCKET_SUSPEND | SOCKET_IN_RESUME);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 489) mutex_unlock(&skt->ops_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 490)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 491) if (!(skt->state & SOCKET_PRESENT)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 492) ret = socket_insert(skt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 493) if (ret == -ENODEV)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 494) ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 495) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 496) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 497)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 498) if (skt->resume_status) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 499) socket_shutdown(skt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 500) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 501) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 502)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 503) if (skt->suspended_state != skt->state) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 504) dev_dbg(&skt->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 505) "suspend state 0x%x != resume state 0x%x\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 506) skt->suspended_state, skt->state);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 507)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 508) socket_shutdown(skt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 509) return socket_insert(skt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 510) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 511)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 512) if (!(skt->state & SOCKET_CARDBUS) && (skt->callback))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 513) ret = skt->callback->early_resume(skt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 514) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 515) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 516)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 517) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 518) * Finalize the resume. In case of a cardbus socket, we have
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 519) * to rebind the devices as we can't be certain that it has been
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 520) * replaced, or not.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 521) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 522) static int socket_complete_resume(struct pcmcia_socket *skt)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 523) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 524) int ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 525) #ifdef CONFIG_CARDBUS
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 526) if (skt->state & SOCKET_CARDBUS) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 527) /* We can't be sure the CardBus card is the same
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 528) * as the one previously inserted. Therefore, remove
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 529) * and re-add... */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 530) cb_free(skt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 531) ret = cb_alloc(skt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 532) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 533) cb_free(skt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 534) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 535) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 536) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 537) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 538)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 539) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 540) * Resume a socket. If a card is present, verify its CIS against
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 541) * our cached copy. If they are different, the card has been
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 542) * replaced, and we need to tell the drivers.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 543) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 544) static int socket_resume(struct pcmcia_socket *skt)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 545) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 546) int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 547) if (!(skt->state & SOCKET_SUSPEND))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 548) return -EBUSY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 549)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 550) socket_early_resume(skt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 551) err = socket_late_resume(skt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 552) if (!err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 553) err = socket_complete_resume(skt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 554) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 555) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 556)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 557) static void socket_remove(struct pcmcia_socket *skt)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 558) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 559) dev_notice(&skt->dev, "pccard: card ejected from slot %d\n", skt->sock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 560) socket_shutdown(skt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 561) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 562)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 563) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 564) * Process a socket card detect status change.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 565) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 566) * If we don't have a card already present, delay the detect event for
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 567) * about 20ms (to be on the safe side) before reading the socket status.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 568) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 569) * Some i82365-based systems send multiple SS_DETECT events during card
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 570) * insertion, and the "card present" status bit seems to bounce. This
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 571) * will probably be true with GPIO-based card detection systems after
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 572) * the product has aged.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 573) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 574) static void socket_detect_change(struct pcmcia_socket *skt)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 575) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 576) if (!(skt->state & SOCKET_SUSPEND)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 577) int status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 578)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 579) if (!(skt->state & SOCKET_PRESENT))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 580) msleep(20);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 581)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 582) skt->ops->get_status(skt, &status);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 583) if ((skt->state & SOCKET_PRESENT) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 584) !(status & SS_DETECT))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 585) socket_remove(skt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 586) if (!(skt->state & SOCKET_PRESENT) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 587) (status & SS_DETECT))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 588) socket_insert(skt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 589) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 590) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 591)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 592) static int pccardd(void *__skt)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 593) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 594) struct pcmcia_socket *skt = __skt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 595) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 596)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 597) skt->thread = current;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 598) skt->socket = dead_socket;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 599) skt->ops->init(skt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 600) skt->ops->set_socket(skt, &skt->socket);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 601)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 602) /* register with the device core */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 603) ret = device_register(&skt->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 604) if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 605) dev_warn(&skt->dev, "PCMCIA: unable to register socket\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 606) skt->thread = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 607) complete(&skt->thread_done);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 608) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 609) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 610) ret = pccard_sysfs_add_socket(&skt->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 611) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 612) dev_warn(&skt->dev, "err %d adding socket attributes\n", ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 613)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 614) complete(&skt->thread_done);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 615)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 616) /* wait for userspace to catch up */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 617) msleep(250);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 618)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 619) set_freezable();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 620) for (;;) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 621) unsigned long flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 622) unsigned int events;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 623) unsigned int sysfs_events;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 624)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 625) spin_lock_irqsave(&skt->thread_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 626) events = skt->thread_events;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 627) skt->thread_events = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 628) sysfs_events = skt->sysfs_events;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 629) skt->sysfs_events = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 630) spin_unlock_irqrestore(&skt->thread_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 631)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 632) mutex_lock(&skt->skt_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 633) if (events & SS_DETECT)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 634) socket_detect_change(skt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 635)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 636) if (sysfs_events) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 637) if (sysfs_events & PCMCIA_UEVENT_EJECT)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 638) socket_remove(skt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 639) if (sysfs_events & PCMCIA_UEVENT_INSERT)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 640) socket_insert(skt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 641) if ((sysfs_events & PCMCIA_UEVENT_SUSPEND) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 642) !(skt->state & SOCKET_CARDBUS)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 643) if (skt->callback)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 644) ret = skt->callback->suspend(skt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 645) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 646) ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 647) if (!ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 648) socket_suspend(skt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 649) msleep(100);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 650) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 651) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 652) if ((sysfs_events & PCMCIA_UEVENT_RESUME) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 653) !(skt->state & SOCKET_CARDBUS)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 654) ret = socket_resume(skt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 655) if (!ret && skt->callback)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 656) skt->callback->resume(skt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 657) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 658) if ((sysfs_events & PCMCIA_UEVENT_REQUERY) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 659) !(skt->state & SOCKET_CARDBUS)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 660) if (!ret && skt->callback)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 661) skt->callback->requery(skt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 662) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 663) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 664) mutex_unlock(&skt->skt_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 665)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 666) if (events || sysfs_events)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 667) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 668)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 669) set_current_state(TASK_INTERRUPTIBLE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 670) if (kthread_should_stop())
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 671) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 672)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 673) schedule();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 674)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 675) try_to_freeze();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 676) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 677) /* make sure we are running before we exit */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 678) __set_current_state(TASK_RUNNING);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 679)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 680) /* shut down socket, if a device is still present */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 681) if (skt->state & SOCKET_PRESENT) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 682) mutex_lock(&skt->skt_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 683) socket_remove(skt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 684) mutex_unlock(&skt->skt_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 685) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 686)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 687) /* remove from the device core */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 688) pccard_sysfs_remove_socket(&skt->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 689) device_unregister(&skt->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 690)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 691) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 692) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 693)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 694) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 695) * Yenta (at least) probes interrupts before registering the socket and
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 696) * starting the handler thread.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 697) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 698) void pcmcia_parse_events(struct pcmcia_socket *s, u_int events)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 699) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 700) unsigned long flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 701) dev_dbg(&s->dev, "parse_events: events %08x\n", events);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 702) if (s->thread) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 703) spin_lock_irqsave(&s->thread_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 704) s->thread_events |= events;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 705) spin_unlock_irqrestore(&s->thread_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 706)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 707) wake_up_process(s->thread);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 708) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 709) } /* pcmcia_parse_events */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 710) EXPORT_SYMBOL(pcmcia_parse_events);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 711)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 712) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 713) * pcmcia_parse_uevents() - tell pccardd to issue manual commands
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 714) * @s: the PCMCIA socket we wan't to command
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 715) * @events: events to pass to pccardd
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 716) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 717) * userspace-issued insert, eject, suspend and resume commands must be
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 718) * handled by pccardd to avoid any sysfs-related deadlocks. Valid events
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 719) * are PCMCIA_UEVENT_EJECT (for eject), PCMCIA_UEVENT__INSERT (for insert),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 720) * PCMCIA_UEVENT_RESUME (for resume), PCMCIA_UEVENT_SUSPEND (for suspend)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 721) * and PCMCIA_UEVENT_REQUERY (for re-querying the PCMCIA card).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 722) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 723) void pcmcia_parse_uevents(struct pcmcia_socket *s, u_int events)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 724) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 725) unsigned long flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 726) dev_dbg(&s->dev, "parse_uevents: events %08x\n", events);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 727) if (s->thread) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 728) spin_lock_irqsave(&s->thread_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 729) s->sysfs_events |= events;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 730) spin_unlock_irqrestore(&s->thread_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 731)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 732) wake_up_process(s->thread);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 733) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 734) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 735) EXPORT_SYMBOL(pcmcia_parse_uevents);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 736)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 737)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 738) /* register pcmcia_callback */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 739) int pccard_register_pcmcia(struct pcmcia_socket *s, struct pcmcia_callback *c)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 740) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 741) int ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 742)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 743) /* s->skt_mutex also protects s->callback */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 744) mutex_lock(&s->skt_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 745)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 746) if (c) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 747) /* registration */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 748) if (s->callback) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 749) ret = -EBUSY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 750) goto err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 751) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 752)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 753) s->callback = c;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 754)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 755) if ((s->state & (SOCKET_PRESENT|SOCKET_CARDBUS)) == SOCKET_PRESENT)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 756) s->callback->add(s);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 757) } else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 758) s->callback = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 759) err:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 760) mutex_unlock(&s->skt_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 761)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 762) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 763) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 764) EXPORT_SYMBOL(pccard_register_pcmcia);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 765)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 766)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 767) /* I'm not sure which "reset" function this is supposed to use,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 768) * but for now, it uses the low-level interface's reset, not the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 769) * CIS register.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 770) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 771)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 772) int pcmcia_reset_card(struct pcmcia_socket *skt)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 773) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 774) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 775)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 776) dev_dbg(&skt->dev, "resetting socket\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 777)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 778) mutex_lock(&skt->skt_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 779) do {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 780) if (!(skt->state & SOCKET_PRESENT)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 781) dev_dbg(&skt->dev, "can't reset, not present\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 782) ret = -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 783) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 784) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 785) if (skt->state & SOCKET_SUSPEND) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 786) dev_dbg(&skt->dev, "can't reset, suspended\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 787) ret = -EBUSY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 788) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 789) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 790) if (skt->state & SOCKET_CARDBUS) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 791) dev_dbg(&skt->dev, "can't reset, is cardbus\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 792) ret = -EPERM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 793) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 794) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 795)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 796) if (skt->callback)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 797) skt->callback->suspend(skt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 798) mutex_lock(&skt->ops_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 799) ret = socket_reset(skt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 800) mutex_unlock(&skt->ops_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 801) if ((ret == 0) && (skt->callback))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 802) skt->callback->resume(skt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 803)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 804) ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 805) } while (0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 806) mutex_unlock(&skt->skt_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 807)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 808) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 809) } /* reset_card */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 810) EXPORT_SYMBOL(pcmcia_reset_card);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 811)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 812)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 813) static int pcmcia_socket_uevent(struct device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 814) struct kobj_uevent_env *env)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 815) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 816) struct pcmcia_socket *s = container_of(dev, struct pcmcia_socket, dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 817)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 818) if (add_uevent_var(env, "SOCKET_NO=%u", s->sock))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 819) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 820)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 821) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 822) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 823)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 824)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 825) static struct completion pcmcia_unload;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 826)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 827) static void pcmcia_release_socket_class(struct class *data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 828) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 829) complete(&pcmcia_unload);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 830) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 831)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 832)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 833) #ifdef CONFIG_PM
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 834)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 835) static int __pcmcia_pm_op(struct device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 836) int (*callback) (struct pcmcia_socket *skt))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 837) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 838) struct pcmcia_socket *s = container_of(dev, struct pcmcia_socket, dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 839) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 840)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 841) mutex_lock(&s->skt_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 842) ret = callback(s);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 843) mutex_unlock(&s->skt_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 844)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 845) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 846) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 847)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 848) static int pcmcia_socket_dev_suspend_noirq(struct device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 849) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 850) return __pcmcia_pm_op(dev, socket_suspend);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 851) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 852)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 853) static int pcmcia_socket_dev_resume_noirq(struct device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 854) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 855) return __pcmcia_pm_op(dev, socket_early_resume);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 856) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 857)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 858) static int __used pcmcia_socket_dev_resume(struct device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 859) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 860) return __pcmcia_pm_op(dev, socket_late_resume);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 861) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 862)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 863) static void __used pcmcia_socket_dev_complete(struct device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 864) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 865) WARN(__pcmcia_pm_op(dev, socket_complete_resume),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 866) "failed to complete resume");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 867) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 868)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 869) static const struct dev_pm_ops pcmcia_socket_pm_ops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 870) /* dev_resume may be called with IRQs enabled */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 871) SET_SYSTEM_SLEEP_PM_OPS(NULL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 872) pcmcia_socket_dev_resume)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 873)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 874) /* late suspend must be called with IRQs disabled */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 875) .suspend_noirq = pcmcia_socket_dev_suspend_noirq,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 876) .freeze_noirq = pcmcia_socket_dev_suspend_noirq,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 877) .poweroff_noirq = pcmcia_socket_dev_suspend_noirq,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 878)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 879) /* early resume must be called with IRQs disabled */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 880) .resume_noirq = pcmcia_socket_dev_resume_noirq,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 881) .thaw_noirq = pcmcia_socket_dev_resume_noirq,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 882) .restore_noirq = pcmcia_socket_dev_resume_noirq,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 883) .complete = pcmcia_socket_dev_complete,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 884) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 885)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 886) #define PCMCIA_SOCKET_CLASS_PM_OPS (&pcmcia_socket_pm_ops)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 887)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 888) #else /* CONFIG_PM */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 889)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 890) #define PCMCIA_SOCKET_CLASS_PM_OPS NULL
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 891)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 892) #endif /* CONFIG_PM */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 893)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 894) struct class pcmcia_socket_class = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 895) .name = "pcmcia_socket",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 896) .dev_uevent = pcmcia_socket_uevent,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 897) .dev_release = pcmcia_release_socket,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 898) .class_release = pcmcia_release_socket_class,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 899) .pm = PCMCIA_SOCKET_CLASS_PM_OPS,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 900) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 901) EXPORT_SYMBOL(pcmcia_socket_class);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 902)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 903)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 904) static int __init init_pcmcia_cs(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 905) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 906) init_completion(&pcmcia_unload);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 907) return class_register(&pcmcia_socket_class);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 908) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 909)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 910) static void __exit exit_pcmcia_cs(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 911) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 912) class_unregister(&pcmcia_socket_class);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 913) wait_for_completion(&pcmcia_unload);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 914) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 915)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 916) subsys_initcall(init_pcmcia_cs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 917) module_exit(exit_pcmcia_cs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 918)
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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