mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-08-26 02:39:48 +00:00
![Vaishali Thakkar](/assets/img/avatar_default.png)
This patch introduces the use of function setup_timer. This is done using Coccinelle and semantic patch used is as follows: @@ expression x,y,z; @@ - init_timer (&x); + setup_timer (&x, y, z); - x.function = y; - x.data = z; Signed-off-by: Vaishali Thakkar <vthakkar1994@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
820 lines
21 KiB
C
820 lines
21 KiB
C
/*======================================================================
|
|
|
|
Common support code for the PCMCIA control functionality of
|
|
integrated SOCs like the SA-11x0 and PXA2xx microprocessors.
|
|
|
|
The contents of this file are subject to the Mozilla Public
|
|
License Version 1.1 (the "License"); you may not use this file
|
|
except in compliance with the License. You may obtain a copy of
|
|
the License at http://www.mozilla.org/MPL/
|
|
|
|
Software distributed under the License is distributed on an "AS
|
|
IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
|
|
implied. See the License for the specific language governing
|
|
rights and limitations under the License.
|
|
|
|
The initial developer of the original code is John G. Dorsey
|
|
<john+@cs.cmu.edu>. Portions created by John G. Dorsey are
|
|
Copyright (C) 1999 John G. Dorsey. All Rights Reserved.
|
|
|
|
Alternatively, the contents of this file may be used under the
|
|
terms of the GNU Public License version 2 (the "GPL"), in which
|
|
case the provisions of the GPL are applicable instead of the
|
|
above. If you wish to allow the use of your version of this file
|
|
only under the terms of the GPL and not to allow others to use
|
|
your version of this file under the MPL, indicate your decision
|
|
by deleting the provisions above and replace them with the notice
|
|
and other provisions required by the GPL. If you do not delete
|
|
the provisions above, a recipient may use your version of this
|
|
file under either the MPL or the GPL.
|
|
|
|
======================================================================*/
|
|
|
|
|
|
#include <linux/cpufreq.h>
|
|
#include <linux/gpio.h>
|
|
#include <linux/init.h>
|
|
#include <linux/interrupt.h>
|
|
#include <linux/io.h>
|
|
#include <linux/irq.h>
|
|
#include <linux/kernel.h>
|
|
#include <linux/mm.h>
|
|
#include <linux/module.h>
|
|
#include <linux/moduleparam.h>
|
|
#include <linux/mutex.h>
|
|
#include <linux/spinlock.h>
|
|
#include <linux/timer.h>
|
|
|
|
#include <mach/hardware.h>
|
|
|
|
#include "soc_common.h"
|
|
|
|
static irqreturn_t soc_common_pcmcia_interrupt(int irq, void *dev);
|
|
|
|
#ifdef CONFIG_PCMCIA_DEBUG
|
|
|
|
static int pc_debug;
|
|
module_param(pc_debug, int, 0644);
|
|
|
|
void soc_pcmcia_debug(struct soc_pcmcia_socket *skt, const char *func,
|
|
int lvl, const char *fmt, ...)
|
|
{
|
|
struct va_format vaf;
|
|
va_list args;
|
|
if (pc_debug > lvl) {
|
|
va_start(args, fmt);
|
|
|
|
vaf.fmt = fmt;
|
|
vaf.va = &args;
|
|
|
|
printk(KERN_DEBUG "skt%u: %s: %pV", skt->nr, func, &vaf);
|
|
|
|
va_end(args);
|
|
}
|
|
}
|
|
EXPORT_SYMBOL(soc_pcmcia_debug);
|
|
|
|
#endif
|
|
|
|
#define to_soc_pcmcia_socket(x) \
|
|
container_of(x, struct soc_pcmcia_socket, socket)
|
|
|
|
static unsigned short
|
|
calc_speed(unsigned short *spds, int num, unsigned short dflt)
|
|
{
|
|
unsigned short speed = 0;
|
|
int i;
|
|
|
|
for (i = 0; i < num; i++)
|
|
if (speed < spds[i])
|
|
speed = spds[i];
|
|
if (speed == 0)
|
|
speed = dflt;
|
|
|
|
return speed;
|
|
}
|
|
|
|
void soc_common_pcmcia_get_timing(struct soc_pcmcia_socket *skt,
|
|
struct soc_pcmcia_timing *timing)
|
|
{
|
|
timing->io =
|
|
calc_speed(skt->spd_io, MAX_IO_WIN, SOC_PCMCIA_IO_ACCESS);
|
|
timing->mem =
|
|
calc_speed(skt->spd_mem, MAX_WIN, SOC_PCMCIA_3V_MEM_ACCESS);
|
|
timing->attr =
|
|
calc_speed(skt->spd_attr, MAX_WIN, SOC_PCMCIA_3V_MEM_ACCESS);
|
|
}
|
|
EXPORT_SYMBOL(soc_common_pcmcia_get_timing);
|
|
|
|
static void __soc_pcmcia_hw_shutdown(struct soc_pcmcia_socket *skt,
|
|
unsigned int nr)
|
|
{
|
|
unsigned int i;
|
|
|
|
for (i = 0; i < nr; i++) {
|
|
if (skt->stat[i].irq)
|
|
free_irq(skt->stat[i].irq, skt);
|
|
if (gpio_is_valid(skt->stat[i].gpio))
|
|
gpio_free(skt->stat[i].gpio);
|
|
}
|
|
|
|
if (skt->ops->hw_shutdown)
|
|
skt->ops->hw_shutdown(skt);
|
|
|
|
clk_disable_unprepare(skt->clk);
|
|
}
|
|
|
|
static void soc_pcmcia_hw_shutdown(struct soc_pcmcia_socket *skt)
|
|
{
|
|
__soc_pcmcia_hw_shutdown(skt, ARRAY_SIZE(skt->stat));
|
|
}
|
|
|
|
static int soc_pcmcia_hw_init(struct soc_pcmcia_socket *skt)
|
|
{
|
|
int ret = 0, i;
|
|
|
|
clk_prepare_enable(skt->clk);
|
|
|
|
if (skt->ops->hw_init) {
|
|
ret = skt->ops->hw_init(skt);
|
|
if (ret)
|
|
return ret;
|
|
}
|
|
|
|
for (i = 0; i < ARRAY_SIZE(skt->stat); i++) {
|
|
if (gpio_is_valid(skt->stat[i].gpio)) {
|
|
int irq;
|
|
|
|
ret = gpio_request_one(skt->stat[i].gpio, GPIOF_IN,
|
|
skt->stat[i].name);
|
|
if (ret) {
|
|
__soc_pcmcia_hw_shutdown(skt, i);
|
|
return ret;
|
|
}
|
|
|
|
irq = gpio_to_irq(skt->stat[i].gpio);
|
|
|
|
if (i == SOC_STAT_RDY)
|
|
skt->socket.pci_irq = irq;
|
|
else
|
|
skt->stat[i].irq = irq;
|
|
}
|
|
|
|
if (skt->stat[i].irq) {
|
|
ret = request_irq(skt->stat[i].irq,
|
|
soc_common_pcmcia_interrupt,
|
|
IRQF_TRIGGER_NONE,
|
|
skt->stat[i].name, skt);
|
|
if (ret) {
|
|
if (gpio_is_valid(skt->stat[i].gpio))
|
|
gpio_free(skt->stat[i].gpio);
|
|
__soc_pcmcia_hw_shutdown(skt, i);
|
|
return ret;
|
|
}
|
|
}
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static void soc_pcmcia_hw_enable(struct soc_pcmcia_socket *skt)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < ARRAY_SIZE(skt->stat); i++)
|
|
if (skt->stat[i].irq) {
|
|
irq_set_irq_type(skt->stat[i].irq, IRQ_TYPE_EDGE_RISING);
|
|
irq_set_irq_type(skt->stat[i].irq, IRQ_TYPE_EDGE_BOTH);
|
|
}
|
|
}
|
|
|
|
static void soc_pcmcia_hw_disable(struct soc_pcmcia_socket *skt)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < ARRAY_SIZE(skt->stat); i++)
|
|
if (skt->stat[i].irq)
|
|
irq_set_irq_type(skt->stat[i].irq, IRQ_TYPE_NONE);
|
|
}
|
|
|
|
static unsigned int soc_common_pcmcia_skt_state(struct soc_pcmcia_socket *skt)
|
|
{
|
|
struct pcmcia_state state;
|
|
unsigned int stat;
|
|
|
|
memset(&state, 0, sizeof(struct pcmcia_state));
|
|
|
|
/* Make battery voltage state report 'good' */
|
|
state.bvd1 = 1;
|
|
state.bvd2 = 1;
|
|
|
|
/* CD is active low by default */
|
|
if (gpio_is_valid(skt->stat[SOC_STAT_CD].gpio))
|
|
state.detect = !gpio_get_value(skt->stat[SOC_STAT_CD].gpio);
|
|
|
|
/* RDY and BVD are active high by default */
|
|
if (gpio_is_valid(skt->stat[SOC_STAT_RDY].gpio))
|
|
state.ready = !!gpio_get_value(skt->stat[SOC_STAT_RDY].gpio);
|
|
if (gpio_is_valid(skt->stat[SOC_STAT_BVD1].gpio))
|
|
state.bvd1 = !!gpio_get_value(skt->stat[SOC_STAT_BVD1].gpio);
|
|
if (gpio_is_valid(skt->stat[SOC_STAT_BVD2].gpio))
|
|
state.bvd2 = !!gpio_get_value(skt->stat[SOC_STAT_BVD2].gpio);
|
|
|
|
skt->ops->socket_state(skt, &state);
|
|
|
|
stat = state.detect ? SS_DETECT : 0;
|
|
stat |= state.ready ? SS_READY : 0;
|
|
stat |= state.wrprot ? SS_WRPROT : 0;
|
|
stat |= state.vs_3v ? SS_3VCARD : 0;
|
|
stat |= state.vs_Xv ? SS_XVCARD : 0;
|
|
|
|
/* The power status of individual sockets is not available
|
|
* explicitly from the hardware, so we just remember the state
|
|
* and regurgitate it upon request:
|
|
*/
|
|
stat |= skt->cs_state.Vcc ? SS_POWERON : 0;
|
|
|
|
if (skt->cs_state.flags & SS_IOCARD)
|
|
stat |= state.bvd1 ? SS_STSCHG : 0;
|
|
else {
|
|
if (state.bvd1 == 0)
|
|
stat |= SS_BATDEAD;
|
|
else if (state.bvd2 == 0)
|
|
stat |= SS_BATWARN;
|
|
}
|
|
return stat;
|
|
}
|
|
|
|
/*
|
|
* soc_common_pcmcia_config_skt
|
|
* ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
|
|
*
|
|
* Convert PCMCIA socket state to our socket configure structure.
|
|
*/
|
|
static int soc_common_pcmcia_config_skt(
|
|
struct soc_pcmcia_socket *skt, socket_state_t *state)
|
|
{
|
|
int ret;
|
|
|
|
ret = skt->ops->configure_socket(skt, state);
|
|
if (ret == 0) {
|
|
/*
|
|
* This really needs a better solution. The IRQ
|
|
* may or may not be claimed by the driver.
|
|
*/
|
|
if (skt->irq_state != 1 && state->io_irq) {
|
|
skt->irq_state = 1;
|
|
irq_set_irq_type(skt->socket.pci_irq,
|
|
IRQ_TYPE_EDGE_FALLING);
|
|
} else if (skt->irq_state == 1 && state->io_irq == 0) {
|
|
skt->irq_state = 0;
|
|
irq_set_irq_type(skt->socket.pci_irq, IRQ_TYPE_NONE);
|
|
}
|
|
|
|
skt->cs_state = *state;
|
|
}
|
|
|
|
if (ret < 0)
|
|
printk(KERN_ERR "soc_common_pcmcia: unable to configure "
|
|
"socket %d\n", skt->nr);
|
|
|
|
return ret;
|
|
}
|
|
|
|
/* soc_common_pcmcia_sock_init()
|
|
* ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
|
|
*
|
|
* (Re-)Initialise the socket, turning on status interrupts
|
|
* and PCMCIA bus. This must wait for power to stabilise
|
|
* so that the card status signals report correctly.
|
|
*
|
|
* Returns: 0
|
|
*/
|
|
static int soc_common_pcmcia_sock_init(struct pcmcia_socket *sock)
|
|
{
|
|
struct soc_pcmcia_socket *skt = to_soc_pcmcia_socket(sock);
|
|
|
|
debug(skt, 2, "initializing socket\n");
|
|
if (skt->ops->socket_init)
|
|
skt->ops->socket_init(skt);
|
|
soc_pcmcia_hw_enable(skt);
|
|
return 0;
|
|
}
|
|
|
|
|
|
/*
|
|
* soc_common_pcmcia_suspend()
|
|
* ^^^^^^^^^^^^^^^^^^^^^^^^^^^
|
|
*
|
|
* Remove power on the socket, disable IRQs from the card.
|
|
* Turn off status interrupts, and disable the PCMCIA bus.
|
|
*
|
|
* Returns: 0
|
|
*/
|
|
static int soc_common_pcmcia_suspend(struct pcmcia_socket *sock)
|
|
{
|
|
struct soc_pcmcia_socket *skt = to_soc_pcmcia_socket(sock);
|
|
|
|
debug(skt, 2, "suspending socket\n");
|
|
|
|
soc_pcmcia_hw_disable(skt);
|
|
if (skt->ops->socket_suspend)
|
|
skt->ops->socket_suspend(skt);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static DEFINE_SPINLOCK(status_lock);
|
|
|
|
static void soc_common_check_status(struct soc_pcmcia_socket *skt)
|
|
{
|
|
unsigned int events;
|
|
|
|
debug(skt, 4, "entering PCMCIA monitoring thread\n");
|
|
|
|
do {
|
|
unsigned int status;
|
|
unsigned long flags;
|
|
|
|
status = soc_common_pcmcia_skt_state(skt);
|
|
|
|
spin_lock_irqsave(&status_lock, flags);
|
|
events = (status ^ skt->status) & skt->cs_state.csc_mask;
|
|
skt->status = status;
|
|
spin_unlock_irqrestore(&status_lock, flags);
|
|
|
|
debug(skt, 4, "events: %s%s%s%s%s%s\n",
|
|
events == 0 ? "<NONE>" : "",
|
|
events & SS_DETECT ? "DETECT " : "",
|
|
events & SS_READY ? "READY " : "",
|
|
events & SS_BATDEAD ? "BATDEAD " : "",
|
|
events & SS_BATWARN ? "BATWARN " : "",
|
|
events & SS_STSCHG ? "STSCHG " : "");
|
|
|
|
if (events)
|
|
pcmcia_parse_events(&skt->socket, events);
|
|
} while (events);
|
|
}
|
|
|
|
/* Let's poll for events in addition to IRQs since IRQ only is unreliable... */
|
|
static void soc_common_pcmcia_poll_event(unsigned long dummy)
|
|
{
|
|
struct soc_pcmcia_socket *skt = (struct soc_pcmcia_socket *)dummy;
|
|
debug(skt, 4, "polling for events\n");
|
|
|
|
mod_timer(&skt->poll_timer, jiffies + SOC_PCMCIA_POLL_PERIOD);
|
|
|
|
soc_common_check_status(skt);
|
|
}
|
|
|
|
|
|
/*
|
|
* Service routine for socket driver interrupts (requested by the
|
|
* low-level PCMCIA init() operation via soc_common_pcmcia_thread()).
|
|
* The actual interrupt-servicing work is performed by
|
|
* soc_common_pcmcia_thread(), largely because the Card Services event-
|
|
* handling code performs scheduling operations which cannot be
|
|
* executed from within an interrupt context.
|
|
*/
|
|
static irqreturn_t soc_common_pcmcia_interrupt(int irq, void *dev)
|
|
{
|
|
struct soc_pcmcia_socket *skt = dev;
|
|
|
|
debug(skt, 3, "servicing IRQ %d\n", irq);
|
|
|
|
soc_common_check_status(skt);
|
|
|
|
return IRQ_HANDLED;
|
|
}
|
|
|
|
|
|
/*
|
|
* Implements the get_status() operation for the in-kernel PCMCIA
|
|
* service (formerly SS_GetStatus in Card Services). Essentially just
|
|
* fills in bits in `status' according to internal driver state or
|
|
* the value of the voltage detect chipselect register.
|
|
*
|
|
* As a debugging note, during card startup, the PCMCIA core issues
|
|
* three set_socket() commands in a row the first with RESET deasserted,
|
|
* the second with RESET asserted, and the last with RESET deasserted
|
|
* again. Following the third set_socket(), a get_status() command will
|
|
* be issued. The kernel is looking for the SS_READY flag (see
|
|
* setup_socket(), reset_socket(), and unreset_socket() in cs.c).
|
|
*
|
|
* Returns: 0
|
|
*/
|
|
static int
|
|
soc_common_pcmcia_get_status(struct pcmcia_socket *sock, unsigned int *status)
|
|
{
|
|
struct soc_pcmcia_socket *skt = to_soc_pcmcia_socket(sock);
|
|
|
|
skt->status = soc_common_pcmcia_skt_state(skt);
|
|
*status = skt->status;
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
/*
|
|
* Implements the set_socket() operation for the in-kernel PCMCIA
|
|
* service (formerly SS_SetSocket in Card Services). We more or
|
|
* less punt all of this work and let the kernel handle the details
|
|
* of power configuration, reset, &c. We also record the value of
|
|
* `state' in order to regurgitate it to the PCMCIA core later.
|
|
*/
|
|
static int soc_common_pcmcia_set_socket(
|
|
struct pcmcia_socket *sock, socket_state_t *state)
|
|
{
|
|
struct soc_pcmcia_socket *skt = to_soc_pcmcia_socket(sock);
|
|
|
|
debug(skt, 2, "mask: %s%s%s%s%s%s flags: %s%s%s%s%s%s Vcc %d Vpp %d irq %d\n",
|
|
(state->csc_mask == 0) ? "<NONE> " : "",
|
|
(state->csc_mask & SS_DETECT) ? "DETECT " : "",
|
|
(state->csc_mask & SS_READY) ? "READY " : "",
|
|
(state->csc_mask & SS_BATDEAD) ? "BATDEAD " : "",
|
|
(state->csc_mask & SS_BATWARN) ? "BATWARN " : "",
|
|
(state->csc_mask & SS_STSCHG) ? "STSCHG " : "",
|
|
(state->flags == 0) ? "<NONE> " : "",
|
|
(state->flags & SS_PWR_AUTO) ? "PWR_AUTO " : "",
|
|
(state->flags & SS_IOCARD) ? "IOCARD " : "",
|
|
(state->flags & SS_RESET) ? "RESET " : "",
|
|
(state->flags & SS_SPKR_ENA) ? "SPKR_ENA " : "",
|
|
(state->flags & SS_OUTPUT_ENA) ? "OUTPUT_ENA " : "",
|
|
state->Vcc, state->Vpp, state->io_irq);
|
|
|
|
return soc_common_pcmcia_config_skt(skt, state);
|
|
}
|
|
|
|
|
|
/*
|
|
* Implements the set_io_map() operation for the in-kernel PCMCIA
|
|
* service (formerly SS_SetIOMap in Card Services). We configure
|
|
* the map speed as requested, but override the address ranges
|
|
* supplied by Card Services.
|
|
*
|
|
* Returns: 0 on success, -1 on error
|
|
*/
|
|
static int soc_common_pcmcia_set_io_map(
|
|
struct pcmcia_socket *sock, struct pccard_io_map *map)
|
|
{
|
|
struct soc_pcmcia_socket *skt = to_soc_pcmcia_socket(sock);
|
|
unsigned short speed = map->speed;
|
|
|
|
debug(skt, 2, "map %u speed %u start 0x%08llx stop 0x%08llx\n",
|
|
map->map, map->speed, (unsigned long long)map->start,
|
|
(unsigned long long)map->stop);
|
|
debug(skt, 2, "flags: %s%s%s%s%s%s%s%s\n",
|
|
(map->flags == 0) ? "<NONE>" : "",
|
|
(map->flags & MAP_ACTIVE) ? "ACTIVE " : "",
|
|
(map->flags & MAP_16BIT) ? "16BIT " : "",
|
|
(map->flags & MAP_AUTOSZ) ? "AUTOSZ " : "",
|
|
(map->flags & MAP_0WS) ? "0WS " : "",
|
|
(map->flags & MAP_WRPROT) ? "WRPROT " : "",
|
|
(map->flags & MAP_USE_WAIT) ? "USE_WAIT " : "",
|
|
(map->flags & MAP_PREFETCH) ? "PREFETCH " : "");
|
|
|
|
if (map->map >= MAX_IO_WIN) {
|
|
printk(KERN_ERR "%s(): map (%d) out of range\n", __func__,
|
|
map->map);
|
|
return -1;
|
|
}
|
|
|
|
if (map->flags & MAP_ACTIVE) {
|
|
if (speed == 0)
|
|
speed = SOC_PCMCIA_IO_ACCESS;
|
|
} else {
|
|
speed = 0;
|
|
}
|
|
|
|
skt->spd_io[map->map] = speed;
|
|
skt->ops->set_timing(skt);
|
|
|
|
if (map->stop == 1)
|
|
map->stop = PAGE_SIZE-1;
|
|
|
|
map->stop -= map->start;
|
|
map->stop += skt->socket.io_offset;
|
|
map->start = skt->socket.io_offset;
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
/*
|
|
* Implements the set_mem_map() operation for the in-kernel PCMCIA
|
|
* service (formerly SS_SetMemMap in Card Services). We configure
|
|
* the map speed as requested, but override the address ranges
|
|
* supplied by Card Services.
|
|
*
|
|
* Returns: 0 on success, -ERRNO on error
|
|
*/
|
|
static int soc_common_pcmcia_set_mem_map(
|
|
struct pcmcia_socket *sock, struct pccard_mem_map *map)
|
|
{
|
|
struct soc_pcmcia_socket *skt = to_soc_pcmcia_socket(sock);
|
|
struct resource *res;
|
|
unsigned short speed = map->speed;
|
|
|
|
debug(skt, 2, "map %u speed %u card_start %08x\n",
|
|
map->map, map->speed, map->card_start);
|
|
debug(skt, 2, "flags: %s%s%s%s%s%s%s%s\n",
|
|
(map->flags == 0) ? "<NONE>" : "",
|
|
(map->flags & MAP_ACTIVE) ? "ACTIVE " : "",
|
|
(map->flags & MAP_16BIT) ? "16BIT " : "",
|
|
(map->flags & MAP_AUTOSZ) ? "AUTOSZ " : "",
|
|
(map->flags & MAP_0WS) ? "0WS " : "",
|
|
(map->flags & MAP_WRPROT) ? "WRPROT " : "",
|
|
(map->flags & MAP_ATTRIB) ? "ATTRIB " : "",
|
|
(map->flags & MAP_USE_WAIT) ? "USE_WAIT " : "");
|
|
|
|
if (map->map >= MAX_WIN)
|
|
return -EINVAL;
|
|
|
|
if (map->flags & MAP_ACTIVE) {
|
|
if (speed == 0)
|
|
speed = 300;
|
|
} else {
|
|
speed = 0;
|
|
}
|
|
|
|
if (map->flags & MAP_ATTRIB) {
|
|
res = &skt->res_attr;
|
|
skt->spd_attr[map->map] = speed;
|
|
skt->spd_mem[map->map] = 0;
|
|
} else {
|
|
res = &skt->res_mem;
|
|
skt->spd_attr[map->map] = 0;
|
|
skt->spd_mem[map->map] = speed;
|
|
}
|
|
|
|
skt->ops->set_timing(skt);
|
|
|
|
map->static_start = res->start + map->card_start;
|
|
|
|
return 0;
|
|
}
|
|
|
|
struct bittbl {
|
|
unsigned int mask;
|
|
const char *name;
|
|
};
|
|
|
|
static struct bittbl status_bits[] = {
|
|
{ SS_WRPROT, "SS_WRPROT" },
|
|
{ SS_BATDEAD, "SS_BATDEAD" },
|
|
{ SS_BATWARN, "SS_BATWARN" },
|
|
{ SS_READY, "SS_READY" },
|
|
{ SS_DETECT, "SS_DETECT" },
|
|
{ SS_POWERON, "SS_POWERON" },
|
|
{ SS_STSCHG, "SS_STSCHG" },
|
|
{ SS_3VCARD, "SS_3VCARD" },
|
|
{ SS_XVCARD, "SS_XVCARD" },
|
|
};
|
|
|
|
static struct bittbl conf_bits[] = {
|
|
{ SS_PWR_AUTO, "SS_PWR_AUTO" },
|
|
{ SS_IOCARD, "SS_IOCARD" },
|
|
{ SS_RESET, "SS_RESET" },
|
|
{ SS_DMA_MODE, "SS_DMA_MODE" },
|
|
{ SS_SPKR_ENA, "SS_SPKR_ENA" },
|
|
{ SS_OUTPUT_ENA, "SS_OUTPUT_ENA" },
|
|
};
|
|
|
|
static void dump_bits(char **p, const char *prefix,
|
|
unsigned int val, struct bittbl *bits, int sz)
|
|
{
|
|
char *b = *p;
|
|
int i;
|
|
|
|
b += sprintf(b, "%-9s:", prefix);
|
|
for (i = 0; i < sz; i++)
|
|
if (val & bits[i].mask)
|
|
b += sprintf(b, " %s", bits[i].name);
|
|
*b++ = '\n';
|
|
*p = b;
|
|
}
|
|
|
|
/*
|
|
* Implements the /sys/class/pcmcia_socket/??/status file.
|
|
*
|
|
* Returns: the number of characters added to the buffer
|
|
*/
|
|
static ssize_t show_status(
|
|
struct device *dev, struct device_attribute *attr, char *buf)
|
|
{
|
|
struct soc_pcmcia_socket *skt =
|
|
container_of(dev, struct soc_pcmcia_socket, socket.dev);
|
|
char *p = buf;
|
|
|
|
p += sprintf(p, "slot : %d\n", skt->nr);
|
|
|
|
dump_bits(&p, "status", skt->status,
|
|
status_bits, ARRAY_SIZE(status_bits));
|
|
dump_bits(&p, "csc_mask", skt->cs_state.csc_mask,
|
|
status_bits, ARRAY_SIZE(status_bits));
|
|
dump_bits(&p, "cs_flags", skt->cs_state.flags,
|
|
conf_bits, ARRAY_SIZE(conf_bits));
|
|
|
|
p += sprintf(p, "Vcc : %d\n", skt->cs_state.Vcc);
|
|
p += sprintf(p, "Vpp : %d\n", skt->cs_state.Vpp);
|
|
p += sprintf(p, "IRQ : %d (%d)\n", skt->cs_state.io_irq,
|
|
skt->socket.pci_irq);
|
|
if (skt->ops->show_timing)
|
|
p += skt->ops->show_timing(skt, p);
|
|
|
|
return p-buf;
|
|
}
|
|
static DEVICE_ATTR(status, S_IRUGO, show_status, NULL);
|
|
|
|
|
|
static struct pccard_operations soc_common_pcmcia_operations = {
|
|
.init = soc_common_pcmcia_sock_init,
|
|
.suspend = soc_common_pcmcia_suspend,
|
|
.get_status = soc_common_pcmcia_get_status,
|
|
.set_socket = soc_common_pcmcia_set_socket,
|
|
.set_io_map = soc_common_pcmcia_set_io_map,
|
|
.set_mem_map = soc_common_pcmcia_set_mem_map,
|
|
};
|
|
|
|
|
|
static LIST_HEAD(soc_pcmcia_sockets);
|
|
static DEFINE_MUTEX(soc_pcmcia_sockets_lock);
|
|
|
|
#ifdef CONFIG_CPU_FREQ
|
|
static int
|
|
soc_pcmcia_notifier(struct notifier_block *nb, unsigned long val, void *data)
|
|
{
|
|
struct soc_pcmcia_socket *skt;
|
|
struct cpufreq_freqs *freqs = data;
|
|
int ret = 0;
|
|
|
|
mutex_lock(&soc_pcmcia_sockets_lock);
|
|
list_for_each_entry(skt, &soc_pcmcia_sockets, node)
|
|
if (skt->ops->frequency_change)
|
|
ret += skt->ops->frequency_change(skt, val, freqs);
|
|
mutex_unlock(&soc_pcmcia_sockets_lock);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static struct notifier_block soc_pcmcia_notifier_block = {
|
|
.notifier_call = soc_pcmcia_notifier
|
|
};
|
|
|
|
static int soc_pcmcia_cpufreq_register(void)
|
|
{
|
|
int ret;
|
|
|
|
ret = cpufreq_register_notifier(&soc_pcmcia_notifier_block,
|
|
CPUFREQ_TRANSITION_NOTIFIER);
|
|
if (ret < 0)
|
|
printk(KERN_ERR "Unable to register CPU frequency change "
|
|
"notifier for PCMCIA (%d)\n", ret);
|
|
return ret;
|
|
}
|
|
fs_initcall(soc_pcmcia_cpufreq_register);
|
|
|
|
static void soc_pcmcia_cpufreq_unregister(void)
|
|
{
|
|
cpufreq_unregister_notifier(&soc_pcmcia_notifier_block,
|
|
CPUFREQ_TRANSITION_NOTIFIER);
|
|
}
|
|
module_exit(soc_pcmcia_cpufreq_unregister);
|
|
|
|
#endif
|
|
|
|
void soc_pcmcia_init_one(struct soc_pcmcia_socket *skt,
|
|
struct pcmcia_low_level *ops, struct device *dev)
|
|
{
|
|
int i;
|
|
|
|
skt->ops = ops;
|
|
skt->socket.owner = ops->owner;
|
|
skt->socket.dev.parent = dev;
|
|
skt->socket.pci_irq = NO_IRQ;
|
|
|
|
for (i = 0; i < ARRAY_SIZE(skt->stat); i++)
|
|
skt->stat[i].gpio = -EINVAL;
|
|
}
|
|
EXPORT_SYMBOL(soc_pcmcia_init_one);
|
|
|
|
void soc_pcmcia_remove_one(struct soc_pcmcia_socket *skt)
|
|
{
|
|
mutex_lock(&soc_pcmcia_sockets_lock);
|
|
del_timer_sync(&skt->poll_timer);
|
|
|
|
pcmcia_unregister_socket(&skt->socket);
|
|
|
|
soc_pcmcia_hw_shutdown(skt);
|
|
|
|
/* should not be required; violates some lowlevel drivers */
|
|
soc_common_pcmcia_config_skt(skt, &dead_socket);
|
|
|
|
list_del(&skt->node);
|
|
mutex_unlock(&soc_pcmcia_sockets_lock);
|
|
|
|
iounmap(skt->virt_io);
|
|
skt->virt_io = NULL;
|
|
release_resource(&skt->res_attr);
|
|
release_resource(&skt->res_mem);
|
|
release_resource(&skt->res_io);
|
|
release_resource(&skt->res_skt);
|
|
}
|
|
EXPORT_SYMBOL(soc_pcmcia_remove_one);
|
|
|
|
int soc_pcmcia_add_one(struct soc_pcmcia_socket *skt)
|
|
{
|
|
int ret;
|
|
|
|
setup_timer(&skt->poll_timer, soc_common_pcmcia_poll_event,
|
|
(unsigned long)skt);
|
|
skt->poll_timer.expires = jiffies + SOC_PCMCIA_POLL_PERIOD;
|
|
|
|
ret = request_resource(&iomem_resource, &skt->res_skt);
|
|
if (ret)
|
|
goto out_err_1;
|
|
|
|
ret = request_resource(&skt->res_skt, &skt->res_io);
|
|
if (ret)
|
|
goto out_err_2;
|
|
|
|
ret = request_resource(&skt->res_skt, &skt->res_mem);
|
|
if (ret)
|
|
goto out_err_3;
|
|
|
|
ret = request_resource(&skt->res_skt, &skt->res_attr);
|
|
if (ret)
|
|
goto out_err_4;
|
|
|
|
skt->virt_io = ioremap(skt->res_io.start, 0x10000);
|
|
if (skt->virt_io == NULL) {
|
|
ret = -ENOMEM;
|
|
goto out_err_5;
|
|
}
|
|
|
|
mutex_lock(&soc_pcmcia_sockets_lock);
|
|
|
|
list_add(&skt->node, &soc_pcmcia_sockets);
|
|
|
|
/*
|
|
* We initialize default socket timing here, because
|
|
* we are not guaranteed to see a SetIOMap operation at
|
|
* runtime.
|
|
*/
|
|
skt->ops->set_timing(skt);
|
|
|
|
ret = soc_pcmcia_hw_init(skt);
|
|
if (ret)
|
|
goto out_err_6;
|
|
|
|
skt->socket.ops = &soc_common_pcmcia_operations;
|
|
skt->socket.features = SS_CAP_STATIC_MAP|SS_CAP_PCCARD;
|
|
skt->socket.resource_ops = &pccard_static_ops;
|
|
skt->socket.irq_mask = 0;
|
|
skt->socket.map_size = PAGE_SIZE;
|
|
skt->socket.io_offset = (unsigned long)skt->virt_io;
|
|
|
|
skt->status = soc_common_pcmcia_skt_state(skt);
|
|
|
|
ret = pcmcia_register_socket(&skt->socket);
|
|
if (ret)
|
|
goto out_err_7;
|
|
|
|
add_timer(&skt->poll_timer);
|
|
|
|
mutex_unlock(&soc_pcmcia_sockets_lock);
|
|
|
|
ret = device_create_file(&skt->socket.dev, &dev_attr_status);
|
|
if (ret)
|
|
goto out_err_8;
|
|
|
|
return ret;
|
|
|
|
out_err_8:
|
|
mutex_lock(&soc_pcmcia_sockets_lock);
|
|
del_timer_sync(&skt->poll_timer);
|
|
pcmcia_unregister_socket(&skt->socket);
|
|
|
|
out_err_7:
|
|
soc_pcmcia_hw_shutdown(skt);
|
|
out_err_6:
|
|
list_del(&skt->node);
|
|
mutex_unlock(&soc_pcmcia_sockets_lock);
|
|
iounmap(skt->virt_io);
|
|
out_err_5:
|
|
release_resource(&skt->res_attr);
|
|
out_err_4:
|
|
release_resource(&skt->res_mem);
|
|
out_err_3:
|
|
release_resource(&skt->res_io);
|
|
out_err_2:
|
|
release_resource(&skt->res_skt);
|
|
out_err_1:
|
|
|
|
return ret;
|
|
}
|
|
EXPORT_SYMBOL(soc_pcmcia_add_one);
|
|
|
|
MODULE_AUTHOR("John Dorsey <john+@cs.cmu.edu>");
|
|
MODULE_DESCRIPTION("Linux PCMCIA Card Services: Common SoC support");
|
|
MODULE_LICENSE("Dual MPL/GPL");
|