drivers/ssb/bridge_pcmcia_80211.c

Source file repositories/reference/linux-study-clean/drivers/ssb/bridge_pcmcia_80211.c

File Facts

System
Linux kernel
Corpus path
drivers/ssb/bridge_pcmcia_80211.c
Extension
.c
Size
2827 bytes
Lines
134
Domain
Driver Families
Bucket
drivers/ssb
Inferred role
Driver Families: implementation source
Status
source implementation candidate

Why This File Exists

Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.

Dependency Surface

Detected Declarations

Annotated Snippet

#include "ssb_private.h"

#include <linux/ssb/ssb.h>
#include <linux/slab.h>
#include <linux/module.h>

#include <pcmcia/cistpl.h>
#include <pcmcia/ciscode.h>
#include <pcmcia/ds.h>
#include <pcmcia/cisreg.h>

static const struct pcmcia_device_id ssb_host_pcmcia_tbl[] = {
	PCMCIA_DEVICE_MANF_CARD(0x2D0, 0x448),
	PCMCIA_DEVICE_MANF_CARD(0x2D0, 0x476),
	PCMCIA_DEVICE_NULL,
};

MODULE_DEVICE_TABLE(pcmcia, ssb_host_pcmcia_tbl);

static int ssb_host_pcmcia_probe(struct pcmcia_device *dev)
{
	struct ssb_bus *ssb;
	int err = -ENOMEM;
	int res = 0;

	ssb = kzalloc_obj(*ssb);
	if (!ssb)
		goto out_error;

	err = -ENODEV;

	dev->config_flags |= CONF_ENABLE_IRQ;

	dev->resource[2]->flags |=  WIN_ENABLE | WIN_DATA_WIDTH_16 |
			 WIN_USE_WAIT;
	dev->resource[2]->start = 0;
	dev->resource[2]->end = SSB_CORE_SIZE;
	res = pcmcia_request_window(dev, dev->resource[2], 250);
	if (res != 0)
		goto err_kfree_ssb;

	res = pcmcia_map_mem_page(dev, dev->resource[2], 0);
	if (res != 0)
		goto err_disable;

	if (!dev->irq)
		goto err_disable;

	res = pcmcia_enable_device(dev);
	if (res != 0)
		goto err_disable;

	err = ssb_bus_pcmciabus_register(ssb, dev, dev->resource[2]->start);
	if (err)
		goto err_disable;
	dev->priv = ssb;

	return 0;

err_disable:
	pcmcia_disable_device(dev);
err_kfree_ssb:
	kfree(ssb);
out_error:
	dev_err(&dev->dev, "Initialization failed (%d, %d)\n", res, err);
	return err;
}

static void ssb_host_pcmcia_remove(struct pcmcia_device *dev)
{
	struct ssb_bus *ssb = dev->priv;

	ssb_bus_unregister(ssb);
	pcmcia_disable_device(dev);
	kfree(ssb);
	dev->priv = NULL;
}

#ifdef CONFIG_PM
static int ssb_host_pcmcia_suspend(struct pcmcia_device *dev)
{
	struct ssb_bus *ssb = dev->priv;

	return ssb_bus_suspend(ssb);
}

static int ssb_host_pcmcia_resume(struct pcmcia_device *dev)
{
	struct ssb_bus *ssb = dev->priv;

Annotation

Implementation Notes