kernel-ark/drivers/misc/tifm_7xx1.c
David Howells c4028958b6 WorkStruct: make allyesconfig
Fix up for make allyesconfig.

Signed-Off-By: David Howells <dhowells@redhat.com>
2006-11-22 14:57:56 +00:00

441 lines
11 KiB
C

/*
* tifm_7xx1.c - TI FlashMedia driver
*
* Copyright (C) 2006 Alex Dubov <oakad@yahoo.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
*/
#include <linux/tifm.h>
#include <linux/dma-mapping.h>
#define DRIVER_NAME "tifm_7xx1"
#define DRIVER_VERSION "0.6"
static void tifm_7xx1_eject(struct tifm_adapter *fm, struct tifm_dev *sock)
{
int cnt;
unsigned long flags;
spin_lock_irqsave(&fm->lock, flags);
if (!fm->inhibit_new_cards) {
for (cnt = 0; cnt < fm->max_sockets; cnt++) {
if (fm->sockets[cnt] == sock) {
fm->remove_mask |= (1 << cnt);
queue_work(fm->wq, &fm->media_remover);
break;
}
}
}
spin_unlock_irqrestore(&fm->lock, flags);
}
static void tifm_7xx1_remove_media(struct work_struct *work)
{
struct tifm_adapter *fm =
container_of(work, struct tifm_adapter, media_remover);
unsigned long flags;
int cnt;
struct tifm_dev *sock;
if (!class_device_get(&fm->cdev))
return;
spin_lock_irqsave(&fm->lock, flags);
for (cnt = 0; cnt < fm->max_sockets; cnt++) {
if (fm->sockets[cnt] && (fm->remove_mask & (1 << cnt))) {
printk(KERN_INFO DRIVER_NAME
": demand removing card from socket %d\n", cnt);
sock = fm->sockets[cnt];
fm->sockets[cnt] = NULL;
fm->remove_mask &= ~(1 << cnt);
writel(0x0e00, sock->addr + SOCK_CONTROL);
writel((TIFM_IRQ_FIFOMASK | TIFM_IRQ_CARDMASK) << cnt,
fm->addr + FM_CLEAR_INTERRUPT_ENABLE);
writel((TIFM_IRQ_FIFOMASK | TIFM_IRQ_CARDMASK) << cnt,
fm->addr + FM_SET_INTERRUPT_ENABLE);
spin_unlock_irqrestore(&fm->lock, flags);
device_unregister(&sock->dev);
spin_lock_irqsave(&fm->lock, flags);
}
}
spin_unlock_irqrestore(&fm->lock, flags);
class_device_put(&fm->cdev);
}
static irqreturn_t tifm_7xx1_isr(int irq, void *dev_id)
{
struct tifm_adapter *fm = dev_id;
unsigned int irq_status;
unsigned int sock_irq_status, cnt;
spin_lock(&fm->lock);
irq_status = readl(fm->addr + FM_INTERRUPT_STATUS);
if (irq_status == 0 || irq_status == (~0)) {
spin_unlock(&fm->lock);
return IRQ_NONE;
}
if (irq_status & TIFM_IRQ_ENABLE) {
writel(TIFM_IRQ_ENABLE, fm->addr + FM_CLEAR_INTERRUPT_ENABLE);
for (cnt = 0; cnt < fm->max_sockets; cnt++) {
sock_irq_status = (irq_status >> cnt) &
(TIFM_IRQ_FIFOMASK | TIFM_IRQ_CARDMASK);
if (fm->sockets[cnt]) {
if (sock_irq_status &&
fm->sockets[cnt]->signal_irq)
sock_irq_status = fm->sockets[cnt]->
signal_irq(fm->sockets[cnt],
sock_irq_status);
if (irq_status & (1 << cnt))
fm->remove_mask |= 1 << cnt;
} else {
if (irq_status & (1 << cnt))
fm->insert_mask |= 1 << cnt;
}
}
}
writel(irq_status, fm->addr + FM_INTERRUPT_STATUS);
if (!fm->inhibit_new_cards) {
if (!fm->remove_mask && !fm->insert_mask) {
writel(TIFM_IRQ_ENABLE,
fm->addr + FM_SET_INTERRUPT_ENABLE);
} else {
queue_work(fm->wq, &fm->media_remover);
queue_work(fm->wq, &fm->media_inserter);
}
}
spin_unlock(&fm->lock);
return IRQ_HANDLED;
}
static tifm_media_id tifm_7xx1_toggle_sock_power(char __iomem *sock_addr, int is_x2)
{
unsigned int s_state;
int cnt;
writel(0x0e00, sock_addr + SOCK_CONTROL);
for (cnt = 0; cnt < 100; cnt++) {
if (!(TIFM_SOCK_STATE_POWERED &
readl(sock_addr + SOCK_PRESENT_STATE)))
break;
msleep(10);
}
s_state = readl(sock_addr + SOCK_PRESENT_STATE);
if (!(TIFM_SOCK_STATE_OCCUPIED & s_state))
return FM_NULL;
if (is_x2) {
writel((s_state & 7) | 0x0c00, sock_addr + SOCK_CONTROL);
} else {
// SmartMedia cards need extra 40 msec
if (((readl(sock_addr + SOCK_PRESENT_STATE) >> 4) & 7) == 1)
msleep(40);
writel(readl(sock_addr + SOCK_CONTROL) | TIFM_CTRL_LED,
sock_addr + SOCK_CONTROL);
msleep(10);
writel((s_state & 0x7) | 0x0c00 | TIFM_CTRL_LED,
sock_addr + SOCK_CONTROL);
}
for (cnt = 0; cnt < 100; cnt++) {
if ((TIFM_SOCK_STATE_POWERED &
readl(sock_addr + SOCK_PRESENT_STATE)))
break;
msleep(10);
}
if (!is_x2)
writel(readl(sock_addr + SOCK_CONTROL) & (~TIFM_CTRL_LED),
sock_addr + SOCK_CONTROL);
return (readl(sock_addr + SOCK_PRESENT_STATE) >> 4) & 7;
}
inline static char __iomem *
tifm_7xx1_sock_addr(char __iomem *base_addr, unsigned int sock_num)
{
return base_addr + ((sock_num + 1) << 10);
}
static void tifm_7xx1_insert_media(struct work_struct *work)
{
struct tifm_adapter *fm =
container_of(work, struct tifm_adapter, media_inserter);
unsigned long flags;
tifm_media_id media_id;
char *card_name = "xx";
int cnt, ok_to_register;
unsigned int insert_mask;
struct tifm_dev *new_sock = NULL;
if (!class_device_get(&fm->cdev))
return;
spin_lock_irqsave(&fm->lock, flags);
insert_mask = fm->insert_mask;
fm->insert_mask = 0;
if (fm->inhibit_new_cards) {
spin_unlock_irqrestore(&fm->lock, flags);
class_device_put(&fm->cdev);
return;
}
spin_unlock_irqrestore(&fm->lock, flags);
for (cnt = 0; cnt < fm->max_sockets; cnt++) {
if (!(insert_mask & (1 << cnt)))
continue;
media_id = tifm_7xx1_toggle_sock_power(tifm_7xx1_sock_addr(fm->addr, cnt),
fm->max_sockets == 2);
if (media_id) {
ok_to_register = 0;
new_sock = tifm_alloc_device(fm, cnt);
if (new_sock) {
new_sock->addr = tifm_7xx1_sock_addr(fm->addr,
cnt);
new_sock->media_id = media_id;
switch (media_id) {
case 1:
card_name = "xd";
break;
case 2:
card_name = "ms";
break;
case 3:
card_name = "sd";
break;
default:
break;
}
snprintf(new_sock->dev.bus_id, BUS_ID_SIZE,
"tifm_%s%u:%u", card_name, fm->id, cnt);
printk(KERN_INFO DRIVER_NAME
": %s card detected in socket %d\n",
card_name, cnt);
spin_lock_irqsave(&fm->lock, flags);
if (!fm->sockets[cnt]) {
fm->sockets[cnt] = new_sock;
ok_to_register = 1;
}
spin_unlock_irqrestore(&fm->lock, flags);
if (!ok_to_register ||
device_register(&new_sock->dev)) {
spin_lock_irqsave(&fm->lock, flags);
fm->sockets[cnt] = NULL;
spin_unlock_irqrestore(&fm->lock,
flags);
tifm_free_device(&new_sock->dev);
}
}
}
writel((TIFM_IRQ_FIFOMASK | TIFM_IRQ_CARDMASK) << cnt,
fm->addr + FM_CLEAR_INTERRUPT_ENABLE);
writel((TIFM_IRQ_FIFOMASK | TIFM_IRQ_CARDMASK) << cnt,
fm->addr + FM_SET_INTERRUPT_ENABLE);
}
writel(TIFM_IRQ_ENABLE, fm->addr + FM_SET_INTERRUPT_ENABLE);
class_device_put(&fm->cdev);
}
static int tifm_7xx1_suspend(struct pci_dev *dev, pm_message_t state)
{
struct tifm_adapter *fm = pci_get_drvdata(dev);
unsigned long flags;
spin_lock_irqsave(&fm->lock, flags);
fm->inhibit_new_cards = 1;
fm->remove_mask = 0xf;
fm->insert_mask = 0;
writel(TIFM_IRQ_ENABLE, fm->addr + FM_CLEAR_INTERRUPT_ENABLE);
spin_unlock_irqrestore(&fm->lock, flags);
flush_workqueue(fm->wq);
tifm_7xx1_remove_media(&fm->media_remover);
pci_set_power_state(dev, PCI_D3hot);
pci_disable_device(dev);
pci_save_state(dev);
return 0;
}
static int tifm_7xx1_resume(struct pci_dev *dev)
{
struct tifm_adapter *fm = pci_get_drvdata(dev);
unsigned long flags;
pci_restore_state(dev);
pci_enable_device(dev);
pci_set_power_state(dev, PCI_D0);
pci_set_master(dev);
spin_lock_irqsave(&fm->lock, flags);
fm->inhibit_new_cards = 0;
writel(TIFM_IRQ_SETALL, fm->addr + FM_INTERRUPT_STATUS);
writel(TIFM_IRQ_SETALL, fm->addr + FM_CLEAR_INTERRUPT_ENABLE);
writel(TIFM_IRQ_ENABLE | TIFM_IRQ_SETALLSOCK,
fm->addr + FM_SET_INTERRUPT_ENABLE);
fm->insert_mask = 0xf;
spin_unlock_irqrestore(&fm->lock, flags);
return 0;
}
static int tifm_7xx1_probe(struct pci_dev *dev,
const struct pci_device_id *dev_id)
{
struct tifm_adapter *fm;
int pci_dev_busy = 0;
int rc;
rc = pci_set_dma_mask(dev, DMA_32BIT_MASK);
if (rc)
return rc;
rc = pci_enable_device(dev);
if (rc)
return rc;
pci_set_master(dev);
rc = pci_request_regions(dev, DRIVER_NAME);
if (rc) {
pci_dev_busy = 1;
goto err_out;
}
pci_intx(dev, 1);
fm = tifm_alloc_adapter();
if (!fm) {
rc = -ENOMEM;
goto err_out_int;
}
fm->dev = &dev->dev;
fm->max_sockets = (dev->device == 0x803B) ? 2 : 4;
fm->sockets = kzalloc(sizeof(struct tifm_dev*) * fm->max_sockets,
GFP_KERNEL);
if (!fm->sockets)
goto err_out_free;
INIT_WORK(&fm->media_inserter, tifm_7xx1_insert_media);
INIT_WORK(&fm->media_remover, tifm_7xx1_remove_media);
fm->eject = tifm_7xx1_eject;
pci_set_drvdata(dev, fm);
fm->addr = ioremap(pci_resource_start(dev, 0),
pci_resource_len(dev, 0));
if (!fm->addr)
goto err_out_free;
rc = request_irq(dev->irq, tifm_7xx1_isr, SA_SHIRQ, DRIVER_NAME, fm);
if (rc)
goto err_out_unmap;
rc = tifm_add_adapter(fm);
if (rc)
goto err_out_irq;
writel(TIFM_IRQ_SETALL, fm->addr + FM_CLEAR_INTERRUPT_ENABLE);
writel(TIFM_IRQ_ENABLE | TIFM_IRQ_SETALLSOCK,
fm->addr + FM_SET_INTERRUPT_ENABLE);
fm->insert_mask = 0xf;
return 0;
err_out_irq:
free_irq(dev->irq, fm);
err_out_unmap:
iounmap(fm->addr);
err_out_free:
pci_set_drvdata(dev, NULL);
tifm_free_adapter(fm);
err_out_int:
pci_intx(dev, 0);
pci_release_regions(dev);
err_out:
if (!pci_dev_busy)
pci_disable_device(dev);
return rc;
}
static void tifm_7xx1_remove(struct pci_dev *dev)
{
struct tifm_adapter *fm = pci_get_drvdata(dev);
unsigned long flags;
spin_lock_irqsave(&fm->lock, flags);
fm->inhibit_new_cards = 1;
fm->remove_mask = 0xf;
fm->insert_mask = 0;
writel(TIFM_IRQ_ENABLE, fm->addr + FM_CLEAR_INTERRUPT_ENABLE);
spin_unlock_irqrestore(&fm->lock, flags);
flush_workqueue(fm->wq);
tifm_7xx1_remove_media(&fm->media_remover);
writel(TIFM_IRQ_SETALL, fm->addr + FM_CLEAR_INTERRUPT_ENABLE);
free_irq(dev->irq, fm);
tifm_remove_adapter(fm);
pci_set_drvdata(dev, NULL);
iounmap(fm->addr);
pci_intx(dev, 0);
pci_release_regions(dev);
pci_disable_device(dev);
tifm_free_adapter(fm);
}
static struct pci_device_id tifm_7xx1_pci_tbl [] = {
{ PCI_VENDOR_ID_TI, 0x8033, PCI_ANY_ID, PCI_ANY_ID, 0, 0,
0 }, /* xx21 - the one I have */
{ PCI_VENDOR_ID_TI, 0x803B, PCI_ANY_ID, PCI_ANY_ID, 0, 0,
0 }, /* xx12 - should be also supported */
{ }
};
static struct pci_driver tifm_7xx1_driver = {
.name = DRIVER_NAME,
.id_table = tifm_7xx1_pci_tbl,
.probe = tifm_7xx1_probe,
.remove = tifm_7xx1_remove,
.suspend = tifm_7xx1_suspend,
.resume = tifm_7xx1_resume,
};
static int __init tifm_7xx1_init(void)
{
return pci_register_driver(&tifm_7xx1_driver);
}
static void __exit tifm_7xx1_exit(void)
{
pci_unregister_driver(&tifm_7xx1_driver);
}
MODULE_AUTHOR("Alex Dubov");
MODULE_DESCRIPTION("TI FlashMedia host driver");
MODULE_LICENSE("GPL");
MODULE_DEVICE_TABLE(pci, tifm_7xx1_pci_tbl);
MODULE_VERSION(DRIVER_VERSION);
module_init(tifm_7xx1_init);
module_exit(tifm_7xx1_exit);