Commit 4020f2d7 authored by Alex Dubov's avatar Alex Dubov Committed by Linus Torvalds

[PATCH] mmc: driver for TI FlashMedia card reader - source

Driver for TI Flash Media card reader.  At present, only MMC/SD cards are
supported.

[akpm@osdl.org: cleanups, build fixes]
Signed-off-by: default avatarAlex Dubov <oakad@yahoo.com>
Cc: Daniel Qarras <dqarras@yahoo.com>
Acked-by: default avatarPierre Ossman <drzeus@drzeus.cx>
Cc: Russell King <rmk@arm.linux.org.uk>
Signed-off-by: default avatarAndrew Morton <akpm@osdl.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@osdl.org>
parent 856fe98f
...@@ -2854,6 +2854,11 @@ M: hlhung3i@gmail.com ...@@ -2854,6 +2854,11 @@ M: hlhung3i@gmail.com
W: http://tcp-lp-mod.sourceforge.net/ W: http://tcp-lp-mod.sourceforge.net/
S: Maintained S: Maintained
TI FLASH MEDIA INTERFACE DRIVER
P: Alex Dubov
M: oakad@yahoo.com
S: Maintained
TI OMAP RANDOM NUMBER GENERATOR SUPPORT TI OMAP RANDOM NUMBER GENERATOR SUPPORT
P: Deepak Saxena P: Deepak Saxena
M: dsaxena@plexity.net M: dsaxena@plexity.net
......
This diff is collapsed.
/*
* tifm_core.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/init.h>
#include <linux/idr.h>
#define DRIVER_NAME "tifm_core"
#define DRIVER_VERSION "0.6"
static DEFINE_IDR(tifm_adapter_idr);
static DEFINE_SPINLOCK(tifm_adapter_lock);
static tifm_media_id *tifm_device_match(tifm_media_id *ids,
struct tifm_dev *dev)
{
while (*ids) {
if (dev->media_id == *ids)
return ids;
ids++;
}
return NULL;
}
static int tifm_match(struct device *dev, struct device_driver *drv)
{
struct tifm_dev *fm_dev = container_of(dev, struct tifm_dev, dev);
struct tifm_driver *fm_drv;
fm_drv = container_of(drv, struct tifm_driver, driver);
if (!fm_drv->id_table)
return -EINVAL;
if (tifm_device_match(fm_drv->id_table, fm_dev))
return 1;
return -ENODEV;
}
static int tifm_uevent(struct device *dev, char **envp, int num_envp,
char *buffer, int buffer_size)
{
struct tifm_dev *fm_dev;
int i = 0;
int length = 0;
const char *card_type_name[] = {"INV", "SM", "MS", "SD"};
if (!dev || !(fm_dev = container_of(dev, struct tifm_dev, dev)))
return -ENODEV;
if (add_uevent_var(envp, num_envp, &i, buffer, buffer_size, &length,
"TIFM_CARD_TYPE=%s", card_type_name[fm_dev->media_id]))
return -ENOMEM;
return 0;
}
static struct bus_type tifm_bus_type = {
.name = "tifm",
.match = tifm_match,
.uevent = tifm_uevent,
};
static void tifm_free(struct class_device *cdev)
{
struct tifm_adapter *fm = container_of(cdev, struct tifm_adapter, cdev);
kfree(fm->sockets);
if (fm->wq)
destroy_workqueue(fm->wq);
kfree(fm);
}
static struct class tifm_adapter_class = {
.name = "tifm_adapter",
.release = tifm_free
};
struct tifm_adapter *tifm_alloc_adapter(void)
{
struct tifm_adapter *fm;
fm = kzalloc(sizeof(struct tifm_adapter), GFP_KERNEL);
if (fm) {
fm->cdev.class = &tifm_adapter_class;
spin_lock_init(&fm->lock);
class_device_initialize(&fm->cdev);
}
return fm;
}
EXPORT_SYMBOL(tifm_alloc_adapter);
void tifm_free_adapter(struct tifm_adapter *fm)
{
class_device_put(&fm->cdev);
}
EXPORT_SYMBOL(tifm_free_adapter);
int tifm_add_adapter(struct tifm_adapter *fm)
{
int rc;
if (!idr_pre_get(&tifm_adapter_idr, GFP_KERNEL))
return -ENOMEM;
spin_lock(&tifm_adapter_lock);
rc = idr_get_new(&tifm_adapter_idr, fm, &fm->id);
spin_unlock(&tifm_adapter_lock);
if (!rc) {
snprintf(fm->cdev.class_id, BUS_ID_SIZE, "tifm%u", fm->id);
strncpy(fm->wq_name, fm->cdev.class_id, KOBJ_NAME_LEN);
fm->wq = create_singlethread_workqueue(fm->wq_name);
if (fm->wq)
return class_device_add(&fm->cdev);
spin_lock(&tifm_adapter_lock);
idr_remove(&tifm_adapter_idr, fm->id);
spin_unlock(&tifm_adapter_lock);
rc = -ENOMEM;
}
return rc;
}
EXPORT_SYMBOL(tifm_add_adapter);
void tifm_remove_adapter(struct tifm_adapter *fm)
{
class_device_del(&fm->cdev);
spin_lock(&tifm_adapter_lock);
idr_remove(&tifm_adapter_idr, fm->id);
spin_unlock(&tifm_adapter_lock);
}
EXPORT_SYMBOL(tifm_remove_adapter);
void tifm_free_device(struct device *dev)
{
struct tifm_dev *fm_dev = container_of(dev, struct tifm_dev, dev);
if (fm_dev->wq)
destroy_workqueue(fm_dev->wq);
kfree(fm_dev);
}
EXPORT_SYMBOL(tifm_free_device);
struct tifm_dev *tifm_alloc_device(struct tifm_adapter *fm, unsigned int id)
{
struct tifm_dev *dev = kzalloc(sizeof(struct tifm_dev), GFP_KERNEL);
if (dev) {
spin_lock_init(&dev->lock);
snprintf(dev->wq_name, KOBJ_NAME_LEN, "tifm%u:%u", fm->id, id);
dev->wq = create_singlethread_workqueue(dev->wq_name);
if (!dev->wq) {
kfree(dev);
return 0;
}
dev->dev.parent = fm->dev;
dev->dev.bus = &tifm_bus_type;
dev->dev.release = tifm_free_device;
}
return dev;
}
EXPORT_SYMBOL(tifm_alloc_device);
void tifm_eject(struct tifm_dev *sock)
{
struct tifm_adapter *fm = dev_get_drvdata(sock->dev.parent);
fm->eject(fm, sock);
}
EXPORT_SYMBOL(tifm_eject);
int tifm_map_sg(struct tifm_dev *sock, struct scatterlist *sg, int nents,
int direction)
{
return pci_map_sg(to_pci_dev(sock->dev.parent), sg, nents, direction);
}
EXPORT_SYMBOL(tifm_map_sg);
void tifm_unmap_sg(struct tifm_dev *sock, struct scatterlist *sg, int nents,
int direction)
{
pci_unmap_sg(to_pci_dev(sock->dev.parent), sg, nents, direction);
}
EXPORT_SYMBOL(tifm_unmap_sg);
static int tifm_device_probe(struct device *dev)
{
struct tifm_driver *drv;
struct tifm_dev *fm_dev;
int rc = 0;
const tifm_media_id *id;
drv = container_of(dev->driver, struct tifm_driver, driver);
fm_dev = container_of(dev, struct tifm_dev, dev);
get_device(dev);
if (!fm_dev->drv && drv->probe && drv->id_table) {
rc = -ENODEV;
id = tifm_device_match(drv->id_table, fm_dev);
if (id)
rc = drv->probe(fm_dev);
if (rc >= 0) {
rc = 0;
fm_dev->drv = drv;
}
}
if (rc)
put_device(dev);
return rc;
}
static int tifm_device_remove(struct device *dev)
{
struct tifm_dev *fm_dev = container_of(dev, struct tifm_dev, dev);
struct tifm_driver *drv = fm_dev->drv;
if (drv) {
if (drv->remove) drv->remove(fm_dev);
fm_dev->drv = 0;
}
put_device(dev);
return 0;
}
int tifm_register_driver(struct tifm_driver *drv)
{
drv->driver.bus = &tifm_bus_type;
drv->driver.probe = tifm_device_probe;
drv->driver.remove = tifm_device_remove;
return driver_register(&drv->driver);
}
EXPORT_SYMBOL(tifm_register_driver);
void tifm_unregister_driver(struct tifm_driver *drv)
{
driver_unregister(&drv->driver);
}
EXPORT_SYMBOL(tifm_unregister_driver);
static int __init tifm_init(void)
{
int rc = bus_register(&tifm_bus_type);
if (!rc) {
rc = class_register(&tifm_adapter_class);
if (rc)
bus_unregister(&tifm_bus_type);
}
return rc;
}
static void __exit tifm_exit(void)
{
class_unregister(&tifm_adapter_class);
bus_unregister(&tifm_bus_type);
}
subsys_initcall(tifm_init);
module_exit(tifm_exit);
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Alex Dubov");
MODULE_DESCRIPTION("TI FlashMedia core driver");
MODULE_LICENSE("GPL");
MODULE_VERSION(DRIVER_VERSION);
This diff is collapsed.
/*
* tifm.h - 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.
*
*/
#ifndef _TIFM_H
#define _TIFM_H
#include <linux/spinlock.h>
#include <linux/interrupt.h>
#include <linux/wait.h>
#include <linux/delay.h>
#include <linux/pci.h>
/* Host registers (relative to pci base address): */
enum {
FM_SET_INTERRUPT_ENABLE = 0x008,
FM_CLEAR_INTERRUPT_ENABLE = 0x00c,
FM_INTERRUPT_STATUS = 0x014 };
/* Socket registers (relative to socket base address): */
enum {
SOCK_CONTROL = 0x004,
SOCK_PRESENT_STATE = 0x008,
SOCK_DMA_ADDRESS = 0x00c,
SOCK_DMA_CONTROL = 0x010,
SOCK_DMA_FIFO_INT_ENABLE_SET = 0x014,
SOCK_DMA_FIFO_INT_ENABLE_CLEAR = 0x018,
SOCK_DMA_FIFO_STATUS = 0x020,
SOCK_FIFO_CONTROL = 0x024,
SOCK_FIFO_PAGE_SIZE = 0x028,
SOCK_MMCSD_COMMAND = 0x104,
SOCK_MMCSD_ARG_LOW = 0x108,
SOCK_MMCSD_ARG_HIGH = 0x10c,
SOCK_MMCSD_CONFIG = 0x110,
SOCK_MMCSD_STATUS = 0x114,
SOCK_MMCSD_INT_ENABLE = 0x118,
SOCK_MMCSD_COMMAND_TO = 0x11c,
SOCK_MMCSD_DATA_TO = 0x120,
SOCK_MMCSD_DATA = 0x124,
SOCK_MMCSD_BLOCK_LEN = 0x128,
SOCK_MMCSD_NUM_BLOCKS = 0x12c,
SOCK_MMCSD_BUFFER_CONFIG = 0x130,
SOCK_MMCSD_SPI_CONFIG = 0x134,
SOCK_MMCSD_SDIO_MODE_CONFIG = 0x138,
SOCK_MMCSD_RESPONSE = 0x144,
SOCK_MMCSD_SDIO_SR = 0x164,
SOCK_MMCSD_SYSTEM_CONTROL = 0x168,
SOCK_MMCSD_SYSTEM_STATUS = 0x16c,
SOCK_MS_COMMAND = 0x184,
SOCK_MS_DATA = 0x188,
SOCK_MS_STATUS = 0x18c,
SOCK_MS_SYSTEM = 0x190,
SOCK_FIFO_ACCESS = 0x200 };
#define TIFM_IRQ_ENABLE 0x80000000
#define TIFM_IRQ_SOCKMASK 0x00000001
#define TIFM_IRQ_CARDMASK 0x00000100
#define TIFM_IRQ_FIFOMASK 0x00010000
#define TIFM_IRQ_SETALL 0xffffffff
#define TIFM_IRQ_SETALLSOCK 0x0000000f
#define TIFM_CTRL_LED 0x00000040
#define TIFM_CTRL_FAST_CLK 0x00000100
#define TIFM_SOCK_STATE_OCCUPIED 0x00000008
#define TIFM_SOCK_STATE_POWERED 0x00000080
#define TIFM_FIFO_ENABLE 0x00000001 /* Meaning of this constant is unverified */
#define TIFM_FIFO_INT_SETALL 0x0000ffff
#define TIFM_FIFO_INTMASK 0x00000005 /* Meaning of this constant is unverified */
#define TIFM_DMA_RESET 0x00000002 /* Meaning of this constant is unverified */
#define TIFM_DMA_TX 0x00008000 /* Meaning of this constant is unverified */
#define TIFM_DMA_EN 0x00000001 /* Meaning of this constant is unverified */
typedef enum {FM_NULL = 0, FM_XD = 0x01, FM_MS = 0x02, FM_SD = 0x03} tifm_media_id;
struct tifm_driver;
struct tifm_dev {
char __iomem *addr;
spinlock_t lock;
tifm_media_id media_id;
char wq_name[KOBJ_NAME_LEN];
struct workqueue_struct *wq;
unsigned int (*signal_irq)(struct tifm_dev *sock,
unsigned int sock_irq_status);
struct tifm_driver *drv;
struct device dev;
};
struct tifm_driver {
tifm_media_id *id_table;
int (*probe)(struct tifm_dev *dev);
void (*remove)(struct tifm_dev *dev);
struct device_driver driver;
};
struct tifm_adapter {
char __iomem *addr;
unsigned int irq_status;
unsigned int insert_mask;
unsigned int remove_mask;
spinlock_t lock;
unsigned int id;
unsigned int max_sockets;
char wq_name[KOBJ_NAME_LEN];
unsigned int inhibit_new_cards;
struct workqueue_struct *wq;
struct work_struct media_inserter;
struct work_struct media_remover;
struct tifm_dev **sockets;
struct class_device cdev;
struct device *dev;
void (*eject)(struct tifm_adapter *fm, struct tifm_dev *sock);
};
struct tifm_adapter *tifm_alloc_adapter(void);
void tifm_free_device(struct device *dev);
void tifm_free_adapter(struct tifm_adapter *fm);
int tifm_add_adapter(struct tifm_adapter *fm);
void tifm_remove_adapter(struct tifm_adapter *fm);
struct tifm_dev *tifm_alloc_device(struct tifm_adapter *fm, unsigned int id);
int tifm_register_driver(struct tifm_driver *drv);
void tifm_unregister_driver(struct tifm_driver *drv);
void tifm_eject(struct tifm_dev *sock);
int tifm_map_sg(struct tifm_dev *sock, struct scatterlist *sg, int nents,
int direction);
void tifm_unmap_sg(struct tifm_dev *sock, struct scatterlist *sg, int nents,
int direction);
static inline void *tifm_get_drvdata(struct tifm_dev *dev)
{
return dev_get_drvdata(&dev->dev);
}
static inline void tifm_set_drvdata(struct tifm_dev *dev, void *data)
{
dev_set_drvdata(&dev->dev, data);
}
struct tifm_device_id {
tifm_media_id media_id;
};
#endif
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