static int pcmcia_device_probe(struct device * dev)
{
struct pcmcia_device *p_dev;
struct pcmcia_driver *p_drv;
struct pcmcia_device_id *did;
struct pcmcia_socket *s;
int ret = 0;
dev = get_device(dev);
if (!dev)
return -ENODEV;
p_dev = to_pcmcia_dev(dev);
p_drv = to_pcmcia_drv(dev->driver);
s = p_dev->socket;
if ((!p_drv->probe) || (!try_module_get(p_drv->owner))) {
ret = -EINVAL;
goto put_dev;
}
p_dev->state &= ~CLIENT_UNBOUND;
/* set up the device configuration, if it hasn't been done before */
if (!s->functions) {
cistpl_longlink_mfc_t mfc;
if (pccard_read_tuple(s, p_dev->func, CISTPL_LONGLINK_MFC,
&mfc) == CS_SUCCESS)
s->functions = mfc.nfn;
else
s->functions = 1;
s->config = kzalloc(sizeof(config_t) * s->functions,
GFP_KERNEL);
if (!s->config) {
ret = -ENOMEM;
goto put_module;
}
}
ret = p_drv->probe(p_dev);
if (ret)
goto put_module;
/* handle pseudo multifunction devices:
* there are at most two pseudo multifunction devices.
* if we're matching against the first, schedule a
* call which will then check whether there are two
* pseudo devices, and if not, add the second one.
*/
did = (struct pcmcia_device_id *) p_dev->dev.driver_data;
if (did && (did->match_flags & PCMCIA_DEV_ID_MATCH_DEVICE_NO) &&
(p_dev->socket->device_count == 1) && (p_dev->device_no == 0))
pcmcia_add_pseudo_device(p_dev->socket);
put_module:
if (ret)
module_put(p_drv->owner);
put_dev:
if (ret)
put_device(dev);
return (ret);
}
void omap_dss_put_device(struct omap_dss_device *dssdev)
{
put_device(&dssdev->dev);
}
/**
* chp_new - register a new channel-path
* @chpid - channel-path ID
*
* Create and register data structure representing new channel-path. Return
* zero on success, non-zero otherwise.
*/
int chp_new(struct chp_id chpid)
{
struct channel_path *chp;
int ret;
if (chp_is_registered(chpid))
return 0;
chp = kzalloc(sizeof(struct channel_path), GFP_KERNEL);
if (!chp)
return -ENOMEM;
/* fill in status, etc. */
chp->chpid = chpid;
chp->state = 1;
chp->dev.parent = &channel_subsystems[chpid.cssid]->device;
chp->dev.groups = chp_attr_groups;
chp->dev.release = chp_release;
mutex_init(&chp->lock);
/* Obtain channel path description and fill it in. */
ret = chsc_determine_base_channel_path_desc(chpid, &chp->desc);
if (ret)
goto out_free;
if ((chp->desc.flags & 0x80) == 0) {
ret = -ENODEV;
goto out_free;
}
/* Get channel-measurement characteristics. */
if (css_chsc_characteristics.scmc && css_chsc_characteristics.secm) {
ret = chsc_get_channel_measurement_chars(chp);
if (ret)
goto out_free;
} else {
chp->cmg = -1;
}
dev_set_name(&chp->dev, "chp%x.%02x", chpid.cssid, chpid.id);
/* make it known to the system */
ret = device_register(&chp->dev);
if (ret) {
CIO_MSG_EVENT(0, "Could not register chp%x.%02x: %d\n",
chpid.cssid, chpid.id, ret);
put_device(&chp->dev);
goto out;
}
mutex_lock(&channel_subsystems[chpid.cssid]->mutex);
if (channel_subsystems[chpid.cssid]->cm_enabled) {
ret = chp_add_cmg_attr(chp);
if (ret) {
device_unregister(&chp->dev);
mutex_unlock(&channel_subsystems[chpid.cssid]->mutex);
goto out;
}
}
channel_subsystems[chpid.cssid]->chps[chpid.id] = chp;
mutex_unlock(&channel_subsystems[chpid.cssid]->mutex);
goto out;
out_free:
kfree(chp);
out:
return ret;
}
/**
* ccwgroup_create_from_string() - create and register a ccw group device
* @root: parent device for the new device
* @creator_id: identifier of creating driver
* @cdrv: ccw driver of slave devices
* @num_devices: number of slave devices
* @buf: buffer containing comma separated bus ids of slave devices
*
* Create and register a new ccw group device as a child of @root. Slave
* devices are obtained from the list of bus ids given in @buf and must all
* belong to @cdrv.
* Returns:
* %0 on success and an error code on failure.
* Context:
* non-atomic
*/
int ccwgroup_create_from_string(struct device *root, unsigned int creator_id,
struct ccw_driver *cdrv, int num_devices,
const char *buf)
{
struct ccwgroup_device *gdev;
int rc, i;
char tmp_bus_id[CCW_BUS_ID_SIZE];
const char *curr_buf;
gdev = kzalloc(sizeof(*gdev) + num_devices * sizeof(gdev->cdev[0]),
GFP_KERNEL);
if (!gdev)
return -ENOMEM;
atomic_set(&gdev->onoff, 0);
mutex_init(&gdev->reg_mutex);
mutex_lock(&gdev->reg_mutex);
gdev->creator_id = creator_id;
gdev->count = num_devices;
gdev->dev.bus = &ccwgroup_bus_type;
gdev->dev.parent = root;
gdev->dev.release = ccwgroup_release;
device_initialize(&gdev->dev);
curr_buf = buf;
for (i = 0; i < num_devices && curr_buf; i++) {
rc = __get_next_bus_id(&curr_buf, tmp_bus_id);
if (rc != 0)
goto error;
if (!__is_valid_bus_id(tmp_bus_id)) {
rc = -EINVAL;
goto error;
}
gdev->cdev[i] = get_ccwdev_by_busid(cdrv, tmp_bus_id);
/*
* All devices have to be of the same type in
* order to be grouped.
*/
if (!gdev->cdev[i]
|| gdev->cdev[i]->id.driver_info !=
gdev->cdev[0]->id.driver_info) {
rc = -EINVAL;
goto error;
}
/* Don't allow a device to belong to more than one group. */
spin_lock_irq(gdev->cdev[i]->ccwlock);
if (dev_get_drvdata(&gdev->cdev[i]->dev)) {
spin_unlock_irq(gdev->cdev[i]->ccwlock);
rc = -EINVAL;
goto error;
}
dev_set_drvdata(&gdev->cdev[i]->dev, gdev);
spin_unlock_irq(gdev->cdev[i]->ccwlock);
}
/* Check for sufficient number of bus ids. */
if (i < num_devices && !curr_buf) {
rc = -EINVAL;
goto error;
}
/* Check for trailing stuff. */
if (i == num_devices && strlen(curr_buf) > 0) {
rc = -EINVAL;
goto error;
}
dev_set_name(&gdev->dev, "%s", dev_name(&gdev->cdev[0]->dev));
rc = device_add(&gdev->dev);
if (rc)
goto error;
get_device(&gdev->dev);
rc = device_create_file(&gdev->dev, &dev_attr_ungroup);
if (rc) {
device_unregister(&gdev->dev);
goto error;
}
rc = __ccwgroup_create_symlinks(gdev);
if (!rc) {
mutex_unlock(&gdev->reg_mutex);
put_device(&gdev->dev);
return 0;
}
device_remove_file(&gdev->dev, &dev_attr_ungroup);
device_unregister(&gdev->dev);
error:
for (i = 0; i < num_devices; i++)
if (gdev->cdev[i]) {
spin_lock_irq(gdev->cdev[i]->ccwlock);
if (dev_get_drvdata(&gdev->cdev[i]->dev) == gdev)
dev_set_drvdata(&gdev->cdev[i]->dev, NULL);
spin_unlock_irq(gdev->cdev[i]->ccwlock);
put_device(&gdev->cdev[i]->dev);
gdev->cdev[i] = NULL;
}
mutex_unlock(&gdev->reg_mutex);
put_device(&gdev->dev);
return rc;
}
static void acpi_processor_hotplug_notify(acpi_handle handle,
u32 event, void *data)
{
struct acpi_device *device = NULL;
struct acpi_eject_event *ej_event = NULL;
u32 ost_code = ACPI_OST_SC_NON_SPECIFIC_FAILURE; /* default */
acpi_status status;
int result;
acpi_scan_lock_acquire();
switch (event) {
case ACPI_NOTIFY_BUS_CHECK:
case ACPI_NOTIFY_DEVICE_CHECK:
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
"Processor driver received %s event\n",
(event == ACPI_NOTIFY_BUS_CHECK) ?
"ACPI_NOTIFY_BUS_CHECK" : "ACPI_NOTIFY_DEVICE_CHECK"));
if (!is_processor_present(handle))
break;
if (!acpi_bus_get_device(handle, &device))
break;
result = acpi_bus_scan(handle);
if (result) {
acpi_handle_err(handle, "Unable to add the device\n");
break;
}
result = acpi_bus_get_device(handle, &device);
if (result) {
acpi_handle_err(handle, "Missing device object\n");
break;
}
ost_code = ACPI_OST_SC_SUCCESS;
break;
case ACPI_NOTIFY_EJECT_REQUEST:
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
"received ACPI_NOTIFY_EJECT_REQUEST\n"));
if (acpi_bus_get_device(handle, &device)) {
acpi_handle_err(handle,
"Device don't exist, dropping EJECT\n");
break;
}
if (!acpi_driver_data(device)) {
acpi_handle_err(handle,
"Driver data is NULL, dropping EJECT\n");
break;
}
ej_event = kmalloc(sizeof(*ej_event), GFP_KERNEL);
if (!ej_event) {
acpi_handle_err(handle, "No memory, dropping EJECT\n");
break;
}
get_device(&device->dev);
ej_event->device = device;
ej_event->event = ACPI_NOTIFY_EJECT_REQUEST;
/* The eject is carried out asynchronously. */
status = acpi_os_hotplug_execute(acpi_bus_hot_remove_device,
ej_event);
if (ACPI_FAILURE(status)) {
put_device(&device->dev);
kfree(ej_event);
break;
}
goto out;
default:
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
"Unsupported event [0x%x]\n", event));
/* non-hotplug event; possibly handled by other handler */
goto out;
}
/* Inform firmware that the hotplug operation has completed */
(void) acpi_evaluate_hotplug_ost(handle, event, ost_code, NULL);
out:
acpi_scan_lock_release();
}
static int read_domain_devices(struct acpi_power_meter_resource *resource)
{
int res = 0;
int i;
struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
union acpi_object *pss;
acpi_status status;
status = acpi_evaluate_object(resource->acpi_dev->handle, "_PMD", NULL,
&buffer);
if (ACPI_FAILURE(status)) {
ACPI_EXCEPTION((AE_INFO, status, "Evaluating _PMD"));
return -ENODEV;
}
pss = buffer.pointer;
if (!pss ||
pss->type != ACPI_TYPE_PACKAGE) {
dev_err(&resource->acpi_dev->dev, ACPI_POWER_METER_NAME
"Invalid _PMD data\n");
res = -EFAULT;
goto end;
}
if (!pss->package.count)
goto end;
resource->domain_devices = kzalloc(sizeof(struct acpi_device *) *
pss->package.count, GFP_KERNEL);
if (!resource->domain_devices) {
res = -ENOMEM;
goto end;
}
resource->holders_dir = kobject_create_and_add("measures",
&resource->acpi_dev->dev.kobj);
if (!resource->holders_dir) {
res = -ENOMEM;
goto exit_free;
}
resource->num_domain_devices = pss->package.count;
for (i = 0; i < pss->package.count; i++) {
struct acpi_device *obj;
union acpi_object *element = &(pss->package.elements[i]);
/* Refuse non-references */
if (element->type != ACPI_TYPE_LOCAL_REFERENCE)
continue;
/* Create a symlink to domain objects */
resource->domain_devices[i] = NULL;
status = acpi_bus_get_device(element->reference.handle,
&resource->domain_devices[i]);
if (ACPI_FAILURE(status))
continue;
obj = resource->domain_devices[i];
get_device(&obj->dev);
res = sysfs_create_link(resource->holders_dir, &obj->dev.kobj,
kobject_name(&obj->dev.kobj));
if (res) {
put_device(&obj->dev);
resource->domain_devices[i] = NULL;
}
}
res = 0;
goto end;
exit_free:
kfree(resource->domain_devices);
end:
kfree(buffer.pointer);
return res;
}
static int __afu_open(struct inode *inode, struct file *file, bool master)
{
struct cxl *adapter;
struct cxl_afu *afu;
struct cxl_context *ctx;
int adapter_num = CXL_DEVT_ADAPTER(inode->i_rdev);
int slice = CXL_DEVT_AFU(inode->i_rdev);
int rc = -ENODEV;
pr_devel("afu_open afu%i.%i\n", slice, adapter_num);
if (!(adapter = get_cxl_adapter(adapter_num)))
return -ENODEV;
if (slice > adapter->slices)
goto err_put_adapter;
spin_lock(&adapter->afu_list_lock);
if (!(afu = adapter->afu[slice])) {
spin_unlock(&adapter->afu_list_lock);
goto err_put_adapter;
}
/*
* taking a ref to the afu so that it doesn't go away
* for rest of the function. This ref is released before
* we return.
*/
cxl_afu_get(afu);
spin_unlock(&adapter->afu_list_lock);
if (!afu->current_mode)
goto err_put_afu;
if (!cxl_ops->link_ok(adapter, afu)) {
rc = -EIO;
goto err_put_afu;
}
if (!(ctx = cxl_context_alloc())) {
rc = -ENOMEM;
goto err_put_afu;
}
rc = cxl_context_init(ctx, afu, master);
if (rc)
goto err_put_afu;
cxl_context_set_mapping(ctx, inode->i_mapping);
pr_devel("afu_open pe: %i\n", ctx->pe);
file->private_data = ctx;
cxl_ctx_get();
/* indicate success */
rc = 0;
err_put_afu:
/* release the ref taken earlier */
cxl_afu_put(afu);
err_put_adapter:
put_device(&adapter->dev);
return rc;
}
int uart_suspend_port(struct uart_driver *drv, struct uart_port *uport)
{
struct uart_state *state = drv->state + uport->line;
struct tty_port *port = &state->port;
struct device *tty_dev;
struct uart_match match = {uport, drv};
mutex_lock(&port->mutex);
tty_dev = device_find_child(uport->dev, &match, serial_match_port);
if (device_may_wakeup(tty_dev)) {
if (!enable_irq_wake(uport->irq))
uport->irq_wake = 1;
put_device(tty_dev);
mutex_unlock(&port->mutex);
return 0;
}
put_device(tty_dev);
if (console_suspend_enabled || !uart_console(uport))
uport->suspended = 1;
if (port->flags & ASYNC_INITIALIZED) {
const struct uart_ops *ops = uport->ops;
int tries;
if (console_suspend_enabled || !uart_console(uport)) {
set_bit(ASYNCB_SUSPENDED, &port->flags);
clear_bit(ASYNCB_INITIALIZED, &port->flags);
spin_lock_irq(&uport->lock);
ops->stop_tx(uport);
ops->set_mctrl(uport, 0);
ops->stop_rx(uport);
spin_unlock_irq(&uport->lock);
}
for (tries = 3; !ops->tx_empty(uport) && tries; tries--)
msleep(10);
if (!tries)
printk(KERN_ERR "%s%s%s%d: Unable to drain "
"transmitter\n",
uport->dev ? dev_name(uport->dev) : "",
uport->dev ? ": " : "",
drv->dev_name,
drv->tty_driver->name_base + uport->line);
if (console_suspend_enabled || !uart_console(uport))
ops->shutdown(uport);
}
if (console_suspend_enabled && uart_console(uport))
console_stop(uport->cons);
if (console_suspend_enabled || !uart_console(uport))
uart_change_pm(state, 3);
mutex_unlock(&port->mutex);
return 0;
}
int uart_resume_port(struct uart_driver *drv, struct uart_port *uport)
{
struct uart_state *state = drv->state + uport->line;
struct tty_port *port = &state->port;
struct device *tty_dev;
struct uart_match match = {uport, drv};
struct ktermios termios;
mutex_lock(&port->mutex);
tty_dev = device_find_child(uport->dev, &match, serial_match_port);
if (!uport->suspended && device_may_wakeup(tty_dev)) {
if (uport->irq_wake) {
disable_irq_wake(uport->irq);
uport->irq_wake = 0;
}
put_device(tty_dev);
mutex_unlock(&port->mutex);
return 0;
}
put_device(tty_dev);
uport->suspended = 0;
if (uart_console(uport)) {
memset(&termios, 0, sizeof(struct ktermios));
termios.c_cflag = uport->cons->cflag;
if (port->tty && port->tty->termios && termios.c_cflag == 0)
termios = *(port->tty->termios);
if (console_suspend_enabled)
uart_change_pm(state, 0);
uport->ops->set_termios(uport, &termios, NULL);
if (console_suspend_enabled)
console_start(uport->cons);
}
if (port->flags & ASYNC_SUSPENDED) {
const struct uart_ops *ops = uport->ops;
int ret;
uart_change_pm(state, 0);
spin_lock_irq(&uport->lock);
ops->set_mctrl(uport, 0);
spin_unlock_irq(&uport->lock);
if (console_suspend_enabled || !uart_console(uport)) {
struct tty_struct *tty = port->tty;
ret = ops->startup(uport);
if (ret == 0) {
if (tty)
uart_change_speed(tty, state, NULL);
spin_lock_irq(&uport->lock);
ops->set_mctrl(uport, uport->mctrl);
ops->start_tx(uport);
spin_unlock_irq(&uport->lock);
set_bit(ASYNCB_INITIALIZED, &port->flags);
} else {
uart_shutdown(tty, state);
}
}
clear_bit(ASYNCB_SUSPENDED, &port->flags);
}
mutex_unlock(&port->mutex);
return 0;
}
static void simple_dev_put(struct simple_device *dev)
{
if (dev)
put_device(&dev->device);
}
void soundbus_dev_put(struct soundbus_dev *dev)
{
if (dev)
put_device(&dev->ofdev.dev);
}
/******************************************************************************
* module init/exit *
*****************************************************************************/
static int __init mon_init(void)
{
int rc;
if (!MACHINE_IS_VM) {
pr_err("The z/VM *MONITOR record device driver cannot be "
"loaded without z/VM\n");
return -ENODEV;
}
/*
* Register with IUCV and connect to *MONITOR service
*/
rc = iucv_register(&monreader_iucv_handler, 1);
if (rc) {
pr_err("The z/VM *MONITOR record device driver failed to "
"register with IUCV\n");
return rc;
}
rc = driver_register(&monreader_driver);
if (rc)
goto out_iucv;
monreader_device = kzalloc(sizeof(struct device), GFP_KERNEL);
if (!monreader_device) {
rc = -ENOMEM;
goto out_driver;
}
dev_set_name(monreader_device, "monreader-dev");
monreader_device->bus = &iucv_bus;
monreader_device->parent = iucv_root;
monreader_device->driver = &monreader_driver;
monreader_device->release = (void (*)(struct device *))kfree;
rc = device_register(monreader_device);
if (rc) {
put_device(monreader_device);
goto out_driver;
}
rc = segment_type(mon_dcss_name);
if (rc < 0) {
segment_warning(rc, mon_dcss_name);
goto out_device;
}
if (rc != SEG_TYPE_SC) {
pr_err("The specified *MONITOR DCSS %s does not have the "
"required type SC\n", mon_dcss_name);
rc = -EINVAL;
goto out_device;
}
rc = segment_load(mon_dcss_name, SEGMENT_SHARED,
&mon_dcss_start, &mon_dcss_end);
if (rc < 0) {
segment_warning(rc, mon_dcss_name);
rc = -EINVAL;
goto out_device;
}
dcss_mkname(mon_dcss_name, &user_data_connect[8]);
/*
* misc_register() has to be the last action in module_init(), because
* file operations will be available right after this.
*/
rc = misc_register(&mon_dev);
if (rc < 0 )
goto out;
return 0;
out:
segment_unload(mon_dcss_name);
out_device:
device_unregister(monreader_device);
out_driver:
driver_unregister(&monreader_driver);
out_iucv:
iucv_unregister(&monreader_iucv_handler, 1);
return rc;
}
static void comedi_clear_hw_dev(struct comedi_device *dev)
{
put_device(dev->hw_dev);
dev->hw_dev = NULL;
}
void rtc_class_close(struct rtc_device *rtc)
{
module_put(rtc->owner);
put_device(&rtc->dev);
}
static inline void video_put(struct video_device *vdev)
{
put_device(&vdev->dev);
}
void omap_dss_put_device(struct omap_dss_device *dssdev)
{
put_device(dssdev->dev);
module_put(dssdev->owner);
}
void cec_put_device(struct cec_devnode *devnode)
{
put_device(&devnode->dev);
}
void __init usb_musb_init(struct omap_musb_board_data *musb_board_data)
{
struct omap_hwmod *oh;
struct omap_device *od;
struct platform_device *pdev;
struct device *dev = NULL;
int bus_id = -1;
const char *oh_name, *name;
struct omap_musb_board_data *board_data;
if (musb_board_data)
board_data = musb_board_data;
else
board_data = &musb_default_board_data;
/*
* REVISIT: This line can be removed once all the platforms using
* musb_core.c have been converted to use use clkdev.
*/
musb_plat.clock = "ick";
musb_plat.board_data = board_data;
musb_plat.power = board_data->power >> 1;
musb_plat.mode = board_data->mode;
musb_plat.extvbus = board_data->extvbus;
if (cpu_is_omap44xx())
omap4430_phy_init(dev); /* power down the phy */
if (cpu_is_omap3517() || cpu_is_omap3505()) {
oh_name = "am35x_otg_hs";
name = "musb-am35x";
} else {
oh_name = "usb_otg_hs";
name = "musb-omap2430";
}
oh = omap_hwmod_lookup(oh_name);
if (!oh) {
pr_err("Could not look up %s\n", oh_name);
return;
}
od = omap_device_build(name, bus_id, oh, &musb_plat,
sizeof(musb_plat), omap_musb_latency,
ARRAY_SIZE(omap_musb_latency), false);
if (IS_ERR(od)) {
pr_err("Could not build omap_device for %s %s\n",
name, oh_name);
return;
}
pdev = &od->pdev;
dev = &pdev->dev;
get_device(dev);
dev->dma_mask = &musb_dmamask;
dev->coherent_dma_mask = musb_dmamask;
put_device(dev);
if (cpu_is_omap44xx())
omap4430_phy_init(dev);
}
void __init usb_musb_init(struct omap_musb_board_data *board_data)
{
char oh_name[MAX_OMAP_MUSB_HWMOD_NAME_LEN];
struct omap_hwmod *oh;
struct omap_device *od;
struct platform_device *pdev;
struct device *dev;
int l, bus_id = -1;
struct musb_hdrc_platform_data *pdata;
if (!board_data) {
pr_err("Board data is required for hdrc device register\n");
return;
}
l = snprintf(oh_name, MAX_OMAP_MUSB_HWMOD_NAME_LEN,
"usb_otg_hs");
WARN(l >= MAX_OMAP_MUSB_HWMOD_NAME_LEN,
"String buffer overflow in MUSB device setup\n");
oh = omap_hwmod_lookup(oh_name);
if (!oh) {
pr_err("Could not look up %s\n", oh_name);
} else {
/*
* REVISIT: This line can be removed once all the platforms
* using musb_core.c have been converted to use use clkdev.
*/
musb_plat.clock = "ick";
musb_plat.board_data = board_data;
musb_plat.power = board_data->power >> 1;
musb_plat.mode = board_data->mode;
musb_plat.device_enable = omap_device_enable;
musb_plat.device_idle = omap_device_idle;
musb_plat.enable_wakeup = omap_device_enable_wakeup;
musb_plat.disable_wakeup = omap_device_disable_wakeup;
#ifdef CONFIG_PM
musb_plat.set_min_bus_tput = omap_pm_set_min_bus_tput;
#endif
/*
* Errata 1.166 idle_req/ack is broken in omap3430
* workaround is to disable the autodile bit for omap3430.
*/
if (cpu_is_omap3430() || cpu_is_omap3630())
oh->flags |= HWMOD_NO_OCP_AUTOIDLE;
musb_plat.oh = oh;
oh_p = oh;
pdata = &musb_plat;
od = omap_device_build(name, bus_id, oh, pdata,
sizeof(struct musb_hdrc_platform_data),
omap_musb_latency,
ARRAY_SIZE(omap_musb_latency), false);
if (IS_ERR(od)) {
pr_err("Could not build omap_device for %s %s\n",
name, oh_name);
} else {
pdev = &od->pdev;
dev = &pdev->dev;
get_device(dev);
dev->dma_mask = &musb_dmamask;
dev->coherent_dma_mask = musb_dmamask;
put_device(dev);
}
/*powerdown the phy*/
if (board_data->interface_type == MUSB_INTERFACE_UTMI)
omap_writel(PHY_PD, DIE_ID_REG_BASE + CONTROL_DEV_CONF);
usb_gadget_init();
}
}
/**
* usb_hcd_fsl_probe - initialize FSL-based HCDs
* @drvier: Driver to be used for this HCD
* @pdev: USB Host Controller being probed
* Context: !in_interrupt()
*
* Allocates basic resources for this USB host controller.
*
*/
static int usb_hcd_fsl_probe(const struct hc_driver *driver,
struct platform_device *pdev)
{
struct fsl_usb2_platform_data *pdata = pdev->dev.platform_data;
struct usb_hcd *hcd;
struct resource *res;
int irq;
int retval;
pr_debug("initializing FSL-SOC USB Controller\n");
/* Need platform data for setup */
if (!pdata) {
dev_err(&pdev->dev,
"No platform data for %s.\n", pdev->dev.bus_id);
return -ENODEV;
}
retval = fsl_platform_verify(pdev);
if (retval)
return retval;
/*
* do platform specific init: check the clock, grab/config pins, etc.
*/
if (pdata->platform_init && pdata->platform_init(pdev)) {
retval = -ENODEV;
goto err1;
}
res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
if (!res) {
dev_err(&pdev->dev,
"Found HC with no IRQ. Check %s setup!\n",
pdev->dev.bus_id);
return -ENODEV;
}
irq = res->start;
fsl_platform_set_vbus_power(pdata, 1);
hcd = usb_create_hcd(driver, &pdev->dev, pdev->dev.bus_id);
if (!hcd) {
retval = -ENOMEM;
goto err1;
}
hcd->rsrc_start = pdata->r_start;
hcd->rsrc_len = pdata->r_len;
hcd->regs = pdata->regs;
vdbg("rsrc_start=0x%llx rsrc_len=0x%llx virtual=0x%x\n",
hcd->rsrc_start, hcd->rsrc_len, hcd->regs);
hcd->power_budget = pdata->power_budget;
/* DDD
* the following must be done by this point, otherwise the OTG
* host port doesn't make it thru initializtion.
* ehci_halt(), called by ehci_fsl_setup() returns -ETIMEDOUT
*/
fsl_platform_set_host_mode(hcd);
retval = usb_add_hcd(hcd, irq, IRQF_SHARED);
if (retval != 0) {
pr_debug("failed with usb_add_hcd\n");
goto err2;
}
#if defined(CONFIG_USB_OTG)
if (pdata->does_otg) {
struct ehci_hcd *ehci = hcd_to_ehci(hcd);
dbg("pdev=0x%p hcd=0x%p ehci=0x%p\n", pdev, hcd, ehci);
ehci->transceiver = otg_get_transceiver();
dbg("ehci->transceiver=0x%p\n", ehci->transceiver);
if (ehci->transceiver) {
retval = otg_set_host(ehci->transceiver,
&ehci_to_hcd(ehci)->self);
if (retval) {
if (ehci->transceiver)
put_device(ehci->transceiver->dev);
goto err2;
}
} else {
printk(KERN_ERR "can't find transceiver\n");
retval = -ENODEV;
goto err2;
}
}
#endif
return retval;
err2:
usb_put_hcd(hcd);
err1:
dev_err(&pdev->dev, "init %s fail, %d\n", pdev->dev.bus_id, retval);
if (pdata->platform_uninit)
pdata->platform_uninit(pdata);
return retval;
}
/**
* usb_put_transceiver - release the (single) USB transceiver
* @x: the transceiver returned by usb_get_transceiver()
*
* Releases a refcount the caller received from usb_get_transceiver().
*
* For use by USB host and peripheral drivers.
*/
void usb_put_transceiver(struct usb_phy *x)
{
if (x)
put_device(x->dev);
}
static int cc2520_spi_add_to_bus(void)
{
struct spi_master *spi_master;
struct spi_device *spi_device;
struct device *pdev;
char buff[64];
int status = 0;
spi_master = spi_busnum_to_master(SPI_BUS);
if (!spi_master) {
ERR((KERN_ALERT "[cc2520] - spi_busnum_to_master(%d) returned NULL\n",
SPI_BUS));
ERR((KERN_ALERT "[cc2520] - Missing modprobe spi-bcm2708?\n"));
return -1;
}
spi_device = spi_alloc_device(spi_master);
if (!spi_device) {
put_device(&spi_master->dev);
ERR((KERN_ALERT "[cc2520] - spi_alloc_device() failed\n"));
return -1;
}
spi_device->chip_select = SPI_BUS_CS0;
/* Check whether this SPI bus.cs is already claimed */
snprintf(buff, sizeof(buff), "%s.%u",
dev_name(&spi_device->master->dev),
spi_device->chip_select);
pdev = bus_find_device_by_name(spi_device->dev.bus, NULL, buff);
if (pdev) {
if (pdev->driver != NULL) {
ERR((KERN_INFO
"[cc2520] - Driver [%s] already registered for %s. \
Nuking from orbit.\n",
pdev->driver->name, buff));
}
else {
ERR((KERN_INFO
"[cc2520] - Previous driver registered with no loaded module. \
Nuking from orbit.\n"));
}
device_unregister(pdev);
}
spi_device->max_speed_hz = SPI_BUS_SPEED;
spi_device->mode = SPI_MODE_0;
spi_device->bits_per_word = 8;
spi_device->irq = -1;
spi_device->controller_state = NULL;
spi_device->controller_data = NULL;
strlcpy(spi_device->modalias, cc2520_name, SPI_NAME_SIZE);
status = spi_add_device(spi_device);
if (status < 0) {
spi_dev_put(spi_device);
ERR((KERN_ALERT "[cc2520] - spi_add_device() failed: %d\n",
status));
}
put_device(&spi_master->dev);
return status;
}
void macio_dev_put(struct macio_dev *dev)
{
if (dev)
put_device(&dev->ofdev.dev);
}
void of_dev_put(struct of_device *dev)
{
if (dev)
put_device(&dev->dev);
}
/**
* cx_device_unregister - Unregister a device.
* @cx_dev: part/mfg id for the device
*/
int cx_device_unregister(struct cx_dev *cx_dev)
{
put_device(&cx_dev->dev);
device_unregister(&cx_dev->dev);
return 0;
}
int a6xx_gmu_init(struct a6xx_gpu *a6xx_gpu, struct device_node *node)
{
struct a6xx_gmu *gmu = &a6xx_gpu->gmu;
struct platform_device *pdev = of_find_device_by_node(node);
int ret;
if (!pdev)
return -ENODEV;
gmu->dev = &pdev->dev;
of_dma_configure(gmu->dev, node, true);
/* Fow now, don't do anything fancy until we get our feet under us */
gmu->idle_level = GMU_IDLE_STATE_ACTIVE;
pm_runtime_enable(gmu->dev);
/* Get the list of clocks */
ret = a6xx_gmu_clocks_probe(gmu);
if (ret)
goto err_put_device;
/* Set up the IOMMU context bank */
ret = a6xx_gmu_memory_probe(gmu);
if (ret)
goto err_put_device;
/* Allocate memory for for the HFI queues */
gmu->hfi = a6xx_gmu_memory_alloc(gmu, SZ_16K);
if (IS_ERR(gmu->hfi))
goto err_memory;
/* Allocate memory for the GMU debug region */
gmu->debug = a6xx_gmu_memory_alloc(gmu, SZ_16K);
if (IS_ERR(gmu->debug))
goto err_memory;
/* Map the GMU registers */
gmu->mmio = a6xx_gmu_get_mmio(pdev, "gmu");
if (IS_ERR(gmu->mmio))
goto err_memory;
/* Get the HFI and GMU interrupts */
gmu->hfi_irq = a6xx_gmu_get_irq(gmu, pdev, "hfi", a6xx_hfi_irq);
gmu->gmu_irq = a6xx_gmu_get_irq(gmu, pdev, "gmu", a6xx_gmu_irq);
if (gmu->hfi_irq < 0 || gmu->gmu_irq < 0)
goto err_mmio;
/*
* Get a link to the GX power domain to reset the GPU in case of GMU
* crash
*/
gmu->gxpd = dev_pm_domain_attach_by_name(gmu->dev, "gx");
/* Get the power levels for the GMU and GPU */
a6xx_gmu_pwrlevels_probe(gmu);
/* Set up the HFI queues */
a6xx_hfi_init(gmu);
gmu->initialized = true;
return 0;
err_mmio:
iounmap(gmu->mmio);
free_irq(gmu->gmu_irq, gmu);
free_irq(gmu->hfi_irq, gmu);
err_memory:
a6xx_gmu_memory_free(gmu, gmu->hfi);
if (gmu->domain) {
iommu_detach_device(gmu->domain, gmu->dev);
iommu_domain_free(gmu->domain);
}
ret = -ENODEV;
err_put_device:
/* Drop reference taken in of_find_device_by_node */
put_device(gmu->dev);
return ret;
}
/**
* usb_put_intf - release a use of the usb interface structure
* @intf: interface that's been decremented
*
* Must be called when a user of an interface is finished with it. When the
* last user of the interface calls this function, the memory of the interface
* is freed.
*/
void usb_put_intf(struct usb_interface *intf)
{
if (intf)
put_device(&intf->dev);
}
static int
qeth_perf_procfile_seq_show(struct seq_file *s, void *it)
{
struct device *device;
struct qeth_card *card;
if (it == SEQ_START_TOKEN)
return 0;
device = (struct device *) it;
card = device->driver_data;
seq_printf(s, "For card with devnos %s/%s/%s (%s):\n",
CARD_RDEV_ID(card),
CARD_WDEV_ID(card),
CARD_DDEV_ID(card),
QETH_CARD_IFNAME(card)
);
if (!card->options.performance_stats)
seq_printf(s, "Performance statistics are deactivated.\n");
seq_printf(s, " Skb's/buffers received : %lu/%u\n"
" Skb's/buffers sent : %lu/%u\n\n",
card->stats.rx_packets -
card->perf_stats.initial_rx_packets,
card->perf_stats.bufs_rec,
card->stats.tx_packets -
card->perf_stats.initial_tx_packets,
card->perf_stats.bufs_sent
);
seq_printf(s, " Skb's/buffers sent without packing : %lu/%u\n"
" Skb's/buffers sent with packing : %u/%u\n\n",
card->stats.tx_packets - card->perf_stats.initial_tx_packets
- card->perf_stats.skbs_sent_pack,
card->perf_stats.bufs_sent - card->perf_stats.bufs_sent_pack,
card->perf_stats.skbs_sent_pack,
card->perf_stats.bufs_sent_pack
);
seq_printf(s, " Skbs sent in SG mode : %u\n"
" Skb fragments sent in SG mode : %u\n\n",
card->perf_stats.sg_skbs_sent,
card->perf_stats.sg_frags_sent);
seq_printf(s, " large_send tx (in Kbytes) : %u\n"
" large_send count : %u\n\n",
card->perf_stats.large_send_bytes >> 10,
card->perf_stats.large_send_cnt);
seq_printf(s, " Packing state changes no pkg.->packing : %u/%u\n"
" Watermarks L/H : %i/%i\n"
" Current buffer usage (outbound q's) : "
"%i/%i/%i/%i\n\n",
card->perf_stats.sc_dp_p, card->perf_stats.sc_p_dp,
QETH_LOW_WATERMARK_PACK, QETH_HIGH_WATERMARK_PACK,
atomic_read(&card->qdio.out_qs[0]->used_buffers),
(card->qdio.no_out_queues > 1)?
atomic_read(&card->qdio.out_qs[1]->used_buffers)
: 0,
(card->qdio.no_out_queues > 2)?
atomic_read(&card->qdio.out_qs[2]->used_buffers)
: 0,
(card->qdio.no_out_queues > 3)?
atomic_read(&card->qdio.out_qs[3]->used_buffers)
: 0
);
seq_printf(s, " Inbound handler time (in us) : %u\n"
" Inbound handler count : %u\n"
" Inbound do_QDIO time (in us) : %u\n"
" Inbound do_QDIO count : %u\n\n"
" Outbound handler time (in us) : %u\n"
" Outbound handler count : %u\n\n"
" Outbound time (in us, incl QDIO) : %u\n"
" Outbound count : %u\n"
" Outbound do_QDIO time (in us) : %u\n"
" Outbound do_QDIO count : %u\n\n",
card->perf_stats.inbound_time,
card->perf_stats.inbound_cnt,
card->perf_stats.inbound_do_qdio_time,
card->perf_stats.inbound_do_qdio_cnt,
card->perf_stats.outbound_handler_time,
card->perf_stats.outbound_handler_cnt,
card->perf_stats.outbound_time,
card->perf_stats.outbound_cnt,
card->perf_stats.outbound_do_qdio_time,
card->perf_stats.outbound_do_qdio_cnt
);
put_device(device);
return 0;
}
/**
* usb_put_dev - release a use of the usb device structure
* @dev: device that's been disconnected
*
* Must be called when a user of a device is finished with it. When the last
* user of the device calls this function, the memory of the device is freed.
*/
void usb_put_dev(struct usb_device *dev)
{
if (dev)
put_device(&dev->dev);
}
void pcmcia_put_dev(struct pcmcia_device *p_dev)
{
if (p_dev)
put_device(&p_dev->dev);
}