>From 6bec583645852716f3fee4a7d2534be1acf060d6 Mon Sep 17 00:00:00 2001
From: Phillip Lougher <phillip@xxxxxxxxxx>
Date: Tue, 1 May 2007 19:39:09 +0100
Subject: [PATCH 1/3] UBUNTU: Update tifm driver to 0.8d
Bug: 53923
Signed-off-by: Phillip lougher <phillip@xxxxxxxxxx>
---
drivers/misc/tifm_7xx1.c | 340 +++++++---------
drivers/misc/tifm_core.c | 308 +++++++++------
drivers/mmc/host/tifm_sd.c | 976 +++++++++++++++++++++++++-------------------
include/linux/tifm.h | 91 +++--
4 files changed, 938 insertions(+), 777 deletions(-)
diff --git a/drivers/misc/tifm_7xx1.c b/drivers/misc/tifm_7xx1.c
index bc60e2f..3ede4c5 100644
--- a/drivers/misc/tifm_7xx1.c
+++ b/drivers/misc/tifm_7xx1.c
@@ -10,11 +10,22 @@
*/
#include <linux/tifm.h>
+#include <linux/pci_ids.h>
#include <linux/dma-mapping.h>
-#include <linux/freezer.h>
#define DRIVER_NAME "tifm_7xx1"
-#define DRIVER_VERSION "0.7"
+#define DRIVER_VERSION "0.8d"
+
+#define TIFM_IRQ_ENABLE 0x80000000
+#define TIFM_IRQ_SOCKMASK(x) (x)
+#define TIFM_IRQ_CARDMASK(x) ((x) << 8)
+#define TIFM_IRQ_FIFOMASK(x) ((x) << 16)
+#define TIFM_IRQ_SETALL 0xffffffff
+
+static void tifm_7xx1_dummy_eject(struct tifm_adapter *fm,
+ struct tifm_dev *sock)
+{
+}
static void tifm_7xx1_eject(struct tifm_adapter *fm, struct tifm_dev *sock)
{
@@ -22,7 +33,7 @@ static void tifm_7xx1_eject(struct tifm_adapter *fm, struct
tifm_dev *sock)
spin_lock_irqsave(&fm->lock, flags);
fm->socket_change_set |= 1 << sock->socket_id;
- wake_up_all(&fm->change_set_notify);
+ tifm_queue_work(&fm->media_switcher);
spin_unlock_irqrestore(&fm->lock, flags);
}
@@ -30,8 +41,7 @@ static irqreturn_t tifm_7xx1_isr(int irq, void *dev_id)
{
struct tifm_adapter *fm = dev_id;
struct tifm_dev *sock;
- unsigned int irq_status;
- unsigned int sock_irq_status, cnt;
+ unsigned int irq_status, cnt;
spin_lock(&fm->lock);
irq_status = readl(fm->addr + FM_INTERRUPT_STATUS);
@@ -44,13 +54,13 @@ static irqreturn_t tifm_7xx1_isr(int irq, void *dev_id)
writel(TIFM_IRQ_ENABLE, fm->addr + FM_CLEAR_INTERRUPT_ENABLE);
for (cnt = 0; cnt < fm->num_sockets; cnt++) {
- sock = fm->sockets[cnt];
- sock_irq_status = (irq_status >> cnt)
- & (TIFM_IRQ_FIFOMASK(1)
- | TIFM_IRQ_CARDMASK(1));
-
- if (sock && sock_irq_status)
- sock->signal_irq(sock, sock_irq_status);
+ sock = fm->sockets[cnt].dev;
+ if (sock) {
+ if ((irq_status >> cnt) & TIFM_IRQ_FIFOMASK(1))
+ sock->data_event(sock);
+ if ((irq_status >> cnt) & TIFM_IRQ_CARDMASK(1))
+ sock->event(sock);
+ }
}
fm->socket_change_set |= irq_status
@@ -58,57 +68,58 @@ static irqreturn_t tifm_7xx1_isr(int irq, void *dev_id)
}
writel(irq_status, fm->addr + FM_INTERRUPT_STATUS);
- if (!fm->socket_change_set)
+ if (fm->finish_me)
+ complete_all(fm->finish_me);
+ else if (!fm->socket_change_set)
writel(TIFM_IRQ_ENABLE, fm->addr + FM_SET_INTERRUPT_ENABLE);
else
- wake_up_all(&fm->change_set_notify);
+ tifm_queue_work(&fm->media_switcher);
spin_unlock(&fm->lock);
return IRQ_HANDLED;
}
-static tifm_media_id tifm_7xx1_toggle_sock_power(char __iomem *sock_addr,
- int is_x2)
+static unsigned char tifm_7xx1_toggle_sock_power(char __iomem *sock_addr,
+ unsigned int caps)
{
unsigned int s_state;
int cnt;
writel(0x0e00, sock_addr + SOCK_CONTROL);
- for (cnt = 0; cnt < 100; cnt++) {
+ /* half a second should be enough */
+ for (cnt = 16; cnt <= 256; cnt <<= 1) {
if (!(TIFM_SOCK_STATE_POWERED
& readl(sock_addr + SOCK_PRESENT_STATE)))
break;
- msleep(10);
+
+ msleep(cnt);
}
s_state = readl(sock_addr + SOCK_PRESENT_STATE);
if (!(TIFM_SOCK_STATE_OCCUPIED & s_state))
- return FM_NULL;
+ return 0;
- if (is_x2) {
- writel((s_state & 7) | 0x0c00, sock_addr + SOCK_CONTROL);
- } else {
- // SmartMedia cards need extra 40 msec
+ writel(readl(sock_addr + SOCK_CONTROL) | TIFM_CTRL_LED,
+ sock_addr + SOCK_CONTROL);
+
+ if (caps & TIFM_SOCK_XD_CAP) {
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);
}
+ writel((s_state & 7) | 0x0c00, sock_addr + SOCK_CONTROL);
+ msleep(10);
- for (cnt = 0; cnt < 100; cnt++) {
+ for (cnt = 16; cnt <= 256; cnt <<= 1) {
if ((TIFM_SOCK_STATE_POWERED
& readl(sock_addr + SOCK_PRESENT_STATE)))
break;
- msleep(10);
+
+ msleep(cnt);
}
- if (!is_x2)
- writel(readl(sock_addr + SOCK_CONTROL) & (~TIFM_CTRL_LED),
- sock_addr + SOCK_CONTROL);
+ writel(readl(sock_addr + SOCK_CONTROL) & (~TIFM_CTRL_LED),
+ sock_addr + SOCK_CONTROL);
return (readl(sock_addr + SOCK_PRESENT_STATE) >> 4) & 7;
}
@@ -119,127 +130,78 @@ tifm_7xx1_sock_addr(char __iomem *base_addr, unsigned
int sock_num)
return base_addr + ((sock_num + 1) << 10);
}
-static int tifm_7xx1_switch_media(void *data)
+static void tifm_7xx1_switch_media(struct work_struct *work)
{
- struct tifm_adapter *fm = data;
- unsigned long flags;
- tifm_media_id media_id;
- char *card_name = "xx";
- int cnt, rc;
+ struct tifm_adapter *fm = container_of(work, struct tifm_adapter,
+ media_switcher);
struct tifm_dev *sock;
- unsigned int socket_change_set;
-
- while (1) {
- rc = wait_event_interruptible(fm->change_set_notify,
- fm->socket_change_set);
- if (rc == -ERESTARTSYS)
- try_to_freeze();
+ unsigned long flags;
+ unsigned char media_id;
+ unsigned int socket_change_set, cnt;
- spin_lock_irqsave(&fm->lock, flags);
- socket_change_set = fm->socket_change_set;
- fm->socket_change_set = 0;
+ spin_lock_irqsave(&fm->lock, flags);
+ socket_change_set = fm->socket_change_set;
+ fm->socket_change_set = 0;
- dev_dbg(fm->dev, "checking media set %x\n",
- socket_change_set);
+ dev_dbg(fm->cdev.dev, "checking media set %x\n",
+ socket_change_set);
- if (kthread_should_stop())
- socket_change_set = (1 << fm->num_sockets) - 1;
+ if (!socket_change_set) {
spin_unlock_irqrestore(&fm->lock, flags);
+ return;
+ }
- if (!socket_change_set)
+ for (cnt = 0; cnt < fm->num_sockets; cnt++) {
+ if (!(socket_change_set & (1 << cnt)))
continue;
-
- spin_lock_irqsave(&fm->lock, flags);
- for (cnt = 0; cnt < fm->num_sockets; cnt++) {
- if (!(socket_change_set & (1 << cnt)))
- continue;
- sock = fm->sockets[cnt];
- if (sock) {
- printk(KERN_INFO DRIVER_NAME
- ": demand removing card from socket
%d\n",
- cnt);
- fm->sockets[cnt] = NULL;
- spin_unlock_irqrestore(&fm->lock, flags);
- device_unregister(&sock->dev);
- spin_lock_irqsave(&fm->lock, flags);
- writel(0x0e00,
- tifm_7xx1_sock_addr(fm->addr, cnt)
- + SOCK_CONTROL);
- }
- if (kthread_should_stop())
- continue;
-
+ sock = fm->sockets[cnt].dev;
+ if (sock) {
+ printk(KERN_INFO
+ "%s : demand removing card from socket %u:%u\n",
+ fm->cdev.class_id, fm->id, cnt);
+ fm->sockets[cnt].dev = NULL;
spin_unlock_irqrestore(&fm->lock, flags);
- media_id = tifm_7xx1_toggle_sock_power(
- tifm_7xx1_sock_addr(fm->addr, cnt),
- fm->num_sockets == 2);
- if (media_id) {
- sock = tifm_alloc_device(fm);
- if (sock) {
- sock->addr =
tifm_7xx1_sock_addr(fm->addr,
- cnt);
- sock->media_id = media_id;
- sock->socket_id = cnt;
- switch (media_id) {
- case 1:
- card_name = "xd";
- break;
- case 2:
- card_name = "ms";
- break;
- case 3:
- card_name = "sd";
- break;
- default:
- tifm_free_device(&sock->dev);
- spin_lock_irqsave(&fm->lock,
flags);
- continue;
- }
- snprintf(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);
- if (!device_register(&sock->dev)) {
- spin_lock_irqsave(&fm->lock,
flags);
- if (!fm->sockets[cnt]) {
- fm->sockets[cnt] = sock;
- sock = NULL;
- }
-
spin_unlock_irqrestore(&fm->lock, flags);
- }
- if (sock)
- tifm_free_device(&sock->dev);
- }
- spin_lock_irqsave(&fm->lock, flags);
- }
+ device_unregister(&sock->dev);
+ spin_lock_irqsave(&fm->lock, flags);
+ writel(0x0e00, tifm_7xx1_sock_addr(fm->addr, cnt)
+ + SOCK_CONTROL);
}
- if (!kthread_should_stop()) {
- writel(TIFM_IRQ_FIFOMASK(socket_change_set)
- | TIFM_IRQ_CARDMASK(socket_change_set),
- fm->addr + FM_CLEAR_INTERRUPT_ENABLE);
- writel(TIFM_IRQ_FIFOMASK(socket_change_set)
- | TIFM_IRQ_CARDMASK(socket_change_set),
- fm->addr + FM_SET_INTERRUPT_ENABLE);
- writel(TIFM_IRQ_ENABLE,
- fm->addr + FM_SET_INTERRUPT_ENABLE);
- spin_unlock_irqrestore(&fm->lock, flags);
- } else {
- for (cnt = 0; cnt < fm->num_sockets; cnt++) {
- if (fm->sockets[cnt])
- fm->socket_change_set |= 1 << cnt;
- }
- if (!fm->socket_change_set) {
- spin_unlock_irqrestore(&fm->lock, flags);
- return 0;
- } else {
+ spin_unlock_irqrestore(&fm->lock, flags);
+
+ media_id = tifm_7xx1_toggle_sock_power(
+ tifm_7xx1_sock_addr(fm->addr, cnt),
+ fm->sockets[cnt].caps);
+
+ // tifm_alloc_device will check if media_id is valid
+ sock = tifm_alloc_device(fm, cnt, media_id);
+ if (sock) {
+ sock->addr = tifm_7xx1_sock_addr(fm->addr, cnt);
+
+ if (!device_register(&sock->dev)) {
+ spin_lock_irqsave(&fm->lock, flags);
+ if (!fm->sockets[cnt].dev) {
+ fm->sockets[cnt].dev = sock;
+ sock = NULL;
+ }
spin_unlock_irqrestore(&fm->lock, flags);
}
+ if (sock)
+ tifm_free_device(&sock->dev);
}
+ spin_lock_irqsave(&fm->lock, flags);
}
- return 0;
+
+ writel(TIFM_IRQ_FIFOMASK(socket_change_set)
+ | TIFM_IRQ_CARDMASK(socket_change_set),
+ fm->addr + FM_CLEAR_INTERRUPT_ENABLE);
+
+ writel(TIFM_IRQ_FIFOMASK(socket_change_set)
+ | TIFM_IRQ_CARDMASK(socket_change_set),
+ fm->addr + FM_SET_INTERRUPT_ENABLE);
+
+ writel(TIFM_IRQ_ENABLE, fm->addr + FM_SET_INTERRUPT_ENABLE);
+ spin_unlock_irqrestore(&fm->lock, flags);
}
#ifdef CONFIG_PM
@@ -258,9 +220,11 @@ static int tifm_7xx1_suspend(struct pci_dev *dev,
pm_message_t state)
static int tifm_7xx1_resume(struct pci_dev *dev)
{
struct tifm_adapter *fm = pci_get_drvdata(dev);
- int cnt, rc;
+ int rc;
+ unsigned int good_sockets = 0, bad_sockets = 0;
unsigned long flags;
- tifm_media_id new_ids[fm->num_sockets];
+ unsigned char new_ids[fm->num_sockets];
+ DECLARE_COMPLETION_ONSTACK(finish_resume);
pci_set_power_state(dev, PCI_D0);
pci_restore_state(dev);
@@ -271,45 +235,50 @@ static int tifm_7xx1_resume(struct pci_dev *dev)
dev_dbg(&dev->dev, "resuming host\n");
- for (cnt = 0; cnt < fm->num_sockets; cnt++)
- new_ids[cnt] = tifm_7xx1_toggle_sock_power(
- tifm_7xx1_sock_addr(fm->addr, cnt),
- fm->num_sockets == 2);
+ for (rc = 0; rc < fm->num_sockets; rc++)
+ new_ids[rc] = tifm_7xx1_toggle_sock_power(
+ tifm_7xx1_sock_addr(fm->addr, rc),
+ fm->sockets[rc].caps);
spin_lock_irqsave(&fm->lock, flags);
- fm->socket_change_set = 0;
- for (cnt = 0; cnt < fm->num_sockets; cnt++) {
- if (fm->sockets[cnt]) {
- if (fm->sockets[cnt]->media_id == new_ids[cnt])
- fm->socket_change_set |= 1 << cnt;
-
- fm->sockets[cnt]->media_id = new_ids[cnt];
+ for (rc = 0; rc < fm->num_sockets; rc++) {
+ if (fm->sockets[rc].dev) {
+ if (fm->sockets[rc].dev->type == new_ids[rc])
+ good_sockets |= 1 << rc;
+ else
+ bad_sockets |= 1 << rc;
}
}
writel(TIFM_IRQ_ENABLE | TIFM_IRQ_SOCKMASK((1 << fm->num_sockets) - 1),
fm->addr + FM_SET_INTERRUPT_ENABLE);
- if (!fm->socket_change_set) {
- spin_unlock_irqrestore(&fm->lock, flags);
- return 0;
- } else {
- fm->socket_change_set = 0;
+ dev_dbg(&dev->dev, "change sets on resume: good %x, bad %x\n",
+ good_sockets, bad_sockets);
+
+ fm->socket_change_set = 0;
+ if (good_sockets) {
+ fm->finish_me = &finish_resume;
spin_unlock_irqrestore(&fm->lock, flags);
+ rc = wait_for_completion_timeout(&finish_resume, HZ);
+ dev_dbg(&dev->dev, "wait returned %d\n", rc);
+ writel(TIFM_IRQ_FIFOMASK(good_sockets)
+ | TIFM_IRQ_CARDMASK(good_sockets),
+ fm->addr + FM_CLEAR_INTERRUPT_ENABLE);
+ writel(TIFM_IRQ_FIFOMASK(good_sockets)
+ | TIFM_IRQ_CARDMASK(good_sockets),
+ fm->addr + FM_SET_INTERRUPT_ENABLE);
+ spin_lock_irqsave(&fm->lock, flags);
+ fm->finish_me = NULL;
+ fm->socket_change_set ^= good_sockets & fm->socket_change_set;
}
- wait_event_timeout(fm->change_set_notify, fm->socket_change_set, HZ);
+ fm->socket_change_set |= bad_sockets;
+ if (fm->socket_change_set)
+ tifm_queue_work(&fm->media_switcher);
- spin_lock_irqsave(&fm->lock, flags);
- writel(TIFM_IRQ_FIFOMASK(fm->socket_change_set)
- | TIFM_IRQ_CARDMASK(fm->socket_change_set),
- fm->addr + FM_CLEAR_INTERRUPT_ENABLE);
- writel(TIFM_IRQ_FIFOMASK(fm->socket_change_set)
- | TIFM_IRQ_CARDMASK(fm->socket_change_set),
- fm->addr + FM_SET_INTERRUPT_ENABLE);
+ spin_unlock_irqrestore(&fm->lock, flags);
writel(TIFM_IRQ_ENABLE,
fm->addr + FM_SET_INTERRUPT_ENABLE);
- fm->socket_change_set = 0;
- spin_unlock_irqrestore(&fm->lock, flags);
return 0;
}
@@ -345,20 +314,26 @@ static int tifm_7xx1_probe(struct pci_dev *dev,
pci_intx(dev, 1);
- fm = tifm_alloc_adapter();
+ fm = tifm_alloc_adapter(dev->device == PCI_DEVICE_ID_TI_XX21_XX11_FM
+ ? 4 : 2, &dev->dev);
if (!fm) {
rc = -ENOMEM;
goto err_out_int;
}
- fm->dev = &dev->dev;
- fm->num_sockets = (dev->device == PCI_DEVICE_ID_TI_XX21_XX11_FM)
- ? 4 : 2;
- fm->sockets = kzalloc(sizeof(struct tifm_dev*) * fm->num_sockets,
- GFP_KERNEL);
- if (!fm->sockets)
- goto err_out_free;
+ switch (fm->num_sockets) {
+ case 2:
+ fm->sockets[0].caps |= TIFM_SOCK_MS_PIF;
+ break;
+ case 4:
+ fm->sockets[0].caps |= TIFM_SOCK_XD_CAP;
+ fm->sockets[1].caps |= TIFM_SOCK_XD_CAP;
+ fm->sockets[2].caps |= TIFM_SOCK_XD_CAP | TIFM_SOCK_MS_PIF;
+ fm->sockets[3].caps |= TIFM_SOCK_XD_CAP;
+ break;
+ }
+ INIT_WORK(&fm->media_switcher, tifm_7xx1_switch_media);
fm->eject = tifm_7xx1_eject;
pci_set_drvdata(dev, fm);
@@ -367,19 +342,16 @@ static int tifm_7xx1_probe(struct pci_dev *dev,
if (!fm->addr)
goto err_out_free;
- rc = request_irq(dev->irq, tifm_7xx1_isr, IRQF_SHARED, DRIVER_NAME, fm);
+ rc = request_irq(dev->irq, tifm_7xx1_isr, SA_SHIRQ, DRIVER_NAME, fm);
if (rc)
goto err_out_unmap;
- init_waitqueue_head(&fm->change_set_notify);
- rc = tifm_add_adapter(fm, tifm_7xx1_switch_media);
+ 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_SOCKMASK((1 << fm->num_sockets) - 1),
fm->addr + FM_SET_INTERRUPT_ENABLE);
- wake_up_process(fm->media_switcher);
return 0;
err_out_irq:
@@ -401,18 +373,12 @@ err_out:
static void tifm_7xx1_remove(struct pci_dev *dev)
{
struct tifm_adapter *fm = pci_get_drvdata(dev);
- unsigned long flags;
+ fm->eject = tifm_7xx1_dummy_eject;
writel(TIFM_IRQ_SETALL, fm->addr + FM_CLEAR_INTERRUPT_ENABLE);
mmiowb();
free_irq(dev->irq, fm);
- spin_lock_irqsave(&fm->lock, flags);
- fm->socket_change_set = (1 << fm->num_sockets) - 1;
- spin_unlock_irqrestore(&fm->lock, flags);
-
- kthread_stop(fm->media_switcher);
-
tifm_remove_adapter(fm);
pci_set_drvdata(dev, NULL);
diff --git a/drivers/misc/tifm_core.c b/drivers/misc/tifm_core.c
index 6b10ebe..404b5b4 100644
--- a/drivers/misc/tifm_core.c
+++ b/drivers/misc/tifm_core.c
@@ -14,71 +14,124 @@
#include <linux/idr.h>
#define DRIVER_NAME "tifm_core"
-#define DRIVER_VERSION "0.7"
+#define DRIVER_VERSION "0.8d"
+static struct workqueue_struct *workqueue;
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)
+static const char *tifm_media_type_name(unsigned char type, unsigned char nt)
{
- while (*ids) {
- if (dev->media_id == *ids)
- return ids;
- ids++;
- }
- return NULL;
+ const char *card_type_name[3][3] = {
+ { "SmartMedia/xD", "MemoryStick", "MMC/SD" },
+ { "XD", "MS", "SD"},
+ { "xd", "ms", "sd"}
+ };
+
+ if (nt > 2 || type < 1 || type > 3)
+ return NULL;
+ return card_type_name[nt][type - 1];
}
-static int tifm_match(struct device *dev, struct device_driver *drv)
+static int tifm_dev_match(struct tifm_dev *sock, struct tifm_device_id *id)
{
- 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))
+ if (sock->type == id->type)
return 1;
- return -ENODEV;
+ return 0;
+}
+
+static int tifm_bus_match(struct device *dev, struct device_driver *drv)
+{
+ struct tifm_dev *sock = container_of(dev, struct tifm_dev, dev);
+ struct tifm_driver *fm_drv = container_of(drv, struct tifm_driver,
+ driver);
+ struct tifm_device_id *ids = fm_drv->id_table;
+
+ if (ids) {
+ while (ids->type) {
+ if (tifm_dev_match(sock, ids))
+ return 1;
+ ++ids;
+ }
+ }
+ return 0;
}
static int tifm_uevent(struct device *dev, char **envp, int num_envp,
char *buffer, int buffer_size)
{
- struct tifm_dev *fm_dev;
+ struct tifm_dev *sock = container_of(dev, struct tifm_dev, 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]))
+ "TIFM_CARD_TYPE=%s",
+ tifm_media_type_name(sock->type, 1)))
return -ENOMEM;
return 0;
}
+static int tifm_device_probe(struct device *dev)
+{
+ struct tifm_dev *sock = container_of(dev, struct tifm_dev, dev);
+ struct tifm_driver *drv = container_of(dev->driver, struct tifm_driver,
+ driver);
+ int rc = -ENODEV;
+
+ get_device(dev);
+ if (dev->driver && drv->probe) {
+ rc = drv->probe(sock);
+ if (!rc)
+ return 0;
+ }
+ put_device(dev);
+ return rc;
+}
+
+static void tifm_dummy_event(struct tifm_dev *sock)
+{
+ return;
+}
+
+static int tifm_device_remove(struct device *dev)
+{
+ struct tifm_dev *sock = container_of(dev, struct tifm_dev, dev);
+ struct tifm_driver *drv = container_of(dev->driver, struct tifm_driver,
+ driver);
+
+ if (dev->driver && drv->remove) {
+ sock->event = tifm_dummy_event;
+ sock->data_event = tifm_dummy_event;
+ drv->remove(sock);
+ sock->dev.driver = NULL;
+ }
+
+ put_device(dev);
+ return 0;
+}
+
#ifdef CONFIG_PM
static int tifm_device_suspend(struct device *dev, pm_message_t state)
{
- struct tifm_dev *fm_dev = container_of(dev, struct tifm_dev, dev);
- struct tifm_driver *drv = fm_dev->drv;
+ struct tifm_dev *sock = container_of(dev, struct tifm_dev, dev);
+ struct tifm_driver *drv = container_of(dev->driver, struct tifm_driver,
+ driver);
- if (drv && drv->suspend)
- return drv->suspend(fm_dev, state);
+ if (dev->driver && drv->suspend)
+ return drv->suspend(sock, state);
return 0;
}
static int tifm_device_resume(struct device *dev)
{
- struct tifm_dev *fm_dev = container_of(dev, struct tifm_dev, dev);
- struct tifm_driver *drv = fm_dev->drv;
+ struct tifm_dev *sock = container_of(dev, struct tifm_dev, dev);
+ struct tifm_driver *drv = container_of(dev->driver, struct tifm_driver,
+ driver);
- if (drv && drv->resume)
- return drv->resume(fm_dev);
+ if (dev->driver && drv->resume)
+ return drv->resume(sock);
return 0;
}
@@ -89,19 +142,33 @@ static int tifm_device_resume(struct device *dev)
#endif /* CONFIG_PM */
+static ssize_t type_show(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ struct tifm_dev *sock = container_of(dev, struct tifm_dev, dev);
+ return sprintf(buf, "%x", sock->type);
+}
+
+static struct device_attribute tifm_dev_attrs[] = {
+ __ATTR(type, S_IRUGO, type_show, NULL),
+ __ATTR_NULL
+};
+
static struct bus_type tifm_bus_type = {
- .name = "tifm",
- .match = tifm_match,
- .uevent = tifm_uevent,
- .suspend = tifm_device_suspend,
- .resume = tifm_device_resume
+ .name = "tifm",
+ .dev_attrs = tifm_dev_attrs,
+ .match = tifm_bus_match,
+ .uevent = tifm_uevent,
+ .probe = tifm_device_probe,
+ .remove = tifm_device_remove,
+ .suspend = tifm_device_suspend,
+ .resume = tifm_device_resume
};
static void tifm_free(struct class_device *cdev)
{
struct tifm_adapter *fm = container_of(cdev, struct tifm_adapter, cdev);
- kfree(fm->sockets);
kfree(fm);
}
@@ -110,28 +177,25 @@ static struct class tifm_adapter_class = {
.release = tifm_free
};
-struct tifm_adapter *tifm_alloc_adapter(void)
+struct tifm_adapter *tifm_alloc_adapter(unsigned int num_sockets,
+ struct device *dev)
{
struct tifm_adapter *fm;
- fm = kzalloc(sizeof(struct tifm_adapter), GFP_KERNEL);
+ fm = kzalloc(sizeof(struct tifm_adapter)
+ + sizeof(struct socket_t) * num_sockets, GFP_KERNEL);
if (fm) {
fm->cdev.class = &tifm_adapter_class;
- spin_lock_init(&fm->lock);
+ fm->cdev.dev = dev;
class_device_initialize(&fm->cdev);
+ spin_lock_init(&fm->lock);
+ fm->num_sockets = num_sockets;
}
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 (*mediathreadfn)(void *data))
+int tifm_add_adapter(struct tifm_adapter *fm)
{
int rc;
@@ -141,59 +205,81 @@ int tifm_add_adapter(struct tifm_adapter *fm,
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);
- fm->media_switcher = kthread_create(mediathreadfn,
- fm, "tifm/%u", fm->id);
-
- if (!IS_ERR(fm->media_switcher))
- return class_device_add(&fm->cdev);
+ if (rc)
+ return rc;
+ snprintf(fm->cdev.class_id, BUS_ID_SIZE, "tifm%u", fm->id);
+ rc = class_device_add(&fm->cdev);
+ if (rc) {
spin_lock(&tifm_adapter_lock);
idr_remove(&tifm_adapter_idr, fm->id);
spin_unlock(&tifm_adapter_lock);
- rc = -ENOMEM;
+ return rc;
}
- return rc;
+
+ return 0;
}
EXPORT_SYMBOL(tifm_add_adapter);
void tifm_remove_adapter(struct tifm_adapter *fm)
{
- class_device_del(&fm->cdev);
+ unsigned int cnt;
+
+ flush_workqueue(workqueue);
+ for (cnt = 0; cnt < fm->num_sockets; ++cnt) {
+ if (fm->sockets[cnt].dev)
+ device_unregister(&fm->sockets[cnt].dev->dev);
+ }
spin_lock(&tifm_adapter_lock);
idr_remove(&tifm_adapter_idr, fm->id);
spin_unlock(&tifm_adapter_lock);
+ class_device_del(&fm->cdev);
}
EXPORT_SYMBOL(tifm_remove_adapter);
-void tifm_free_device(struct device *dev)
+void tifm_free_adapter(struct tifm_adapter *fm)
{
- struct tifm_dev *fm_dev = container_of(dev, struct tifm_dev, dev);
- kfree(fm_dev);
+ class_device_put(&fm->cdev);
}
-EXPORT_SYMBOL(tifm_free_device);
+EXPORT_SYMBOL(tifm_free_adapter);
-static void tifm_dummy_signal_irq(struct tifm_dev *sock,
- unsigned int sock_irq_status)
+void tifm_free_device(struct device *dev)
{
- return;
+ struct tifm_dev *sock = container_of(dev, struct tifm_dev, dev);
+ kfree(sock);
}
+EXPORT_SYMBOL(tifm_free_device);
-struct tifm_dev *tifm_alloc_device(struct tifm_adapter *fm)
+struct tifm_dev *tifm_alloc_device(struct tifm_adapter *fm, unsigned int id,
+ unsigned char type)
{
- struct tifm_dev *dev = kzalloc(sizeof(struct tifm_dev), GFP_KERNEL);
-
- if (dev) {
- spin_lock_init(&dev->lock);
-
- dev->dev.parent = fm->dev;
- dev->dev.bus = &tifm_bus_type;
- dev->dev.release = tifm_free_device;
- dev->signal_irq = tifm_dummy_signal_irq;
+ struct tifm_dev *sock = NULL;
+
+ if (!tifm_media_type_name(type, 0))
+ return sock;
+
+ sock = kzalloc(sizeof(struct tifm_dev), GFP_KERNEL);
+ if (sock) {
+ spin_lock_init(&sock->lock);
+ sock->type = type;
+ sock->socket_id = id;
+ sock->event = tifm_dummy_event;
+ sock->data_event = tifm_dummy_event;
+
+ sock->dev.parent = fm->cdev.dev;
+ sock->dev.bus = &tifm_bus_type;
+ sock->dev.dma_mask = fm->cdev.dev->dma_mask;
+ sock->dev.release = tifm_free_device;
+
+ snprintf(sock->dev.bus_id, BUS_ID_SIZE,
+ "tifm_%s%u:%u", tifm_media_type_name(type, 2),
+ fm->id, id);
+ printk(KERN_INFO DRIVER_NAME
+ ": %s card detected in socket %u:%u\n",
+ tifm_media_type_name(type, 0), fm->id, id);
}
- return dev;
+ return sock;
}
EXPORT_SYMBOL(tifm_alloc_device);
@@ -218,54 +304,15 @@ void tifm_unmap_sg(struct tifm_dev *sock, struct
scatterlist *sg, int nents,
}
EXPORT_SYMBOL(tifm_unmap_sg);
-static int tifm_device_probe(struct device *dev)
+void tifm_queue_work(struct work_struct *work)
{
- 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) {
- fm_dev->signal_irq = tifm_dummy_signal_irq;
- if (drv->remove)
- drv->remove(fm_dev);
- fm_dev->drv = NULL;
- }
-
- put_device(dev);
- return 0;
+ queue_work(workqueue, work);
}
+EXPORT_SYMBOL(tifm_queue_work);
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;
- drv->driver.suspend = tifm_device_suspend;
- drv->driver.resume = tifm_device_resume;
return driver_register(&drv->driver);
}
@@ -279,13 +326,25 @@ EXPORT_SYMBOL(tifm_unregister_driver);
static int __init tifm_init(void)
{
- int rc = bus_register(&tifm_bus_type);
+ int rc;
- if (!rc) {
- rc = class_register(&tifm_adapter_class);
- if (rc)
- bus_unregister(&tifm_bus_type);
- }
+ workqueue = create_freezeable_workqueue("tifm");
+ if (!workqueue)
+ return -ENOMEM;
+
+ rc = bus_register(&tifm_bus_type);
+
+ if (rc)
+ goto err_out_wq;
+
+ rc = class_register(&tifm_adapter_class);
+ if (!rc)
+ return 0;
+
+ bus_unregister(&tifm_bus_type);
+
+err_out_wq:
+ destroy_workqueue(workqueue);
return rc;
}
@@ -294,6 +353,7 @@ static void __exit tifm_exit(void)
{
class_unregister(&tifm_adapter_class);
bus_unregister(&tifm_bus_type);
+ destroy_workqueue(workqueue);
}
subsys_initcall(tifm_init);
|
