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399500da18
ssb bus can be found on various "host" devices like PCI/PCMCIA/SDIO. Every ssb bus contains cores AKA devices. The main idea is to have ssb driver scan/initialize bus and register ready-to-use cores. This way ssb drivers can operate on a single core mostly ignoring underlaying details. For some reason PCMCIA support was split between ssb and b43. We got PCMCIA host device probing in b43, then bus scanning in ssb and then wireless core probing back in b43. The truth is it's very unlikely we will ever see PCMCIA ssb device with no 802.11 core but I still don't see any advantage of the current architecture. With proposed change we get the same functionality with a simpler architecture, less Kconfig symbols, one killed EXPORT and hopefully cleaner b43. Since b43 supports both: ssb & bcma I prefer to keep ssb specific code in ssb driver. This mostly moves code from b43's pcmcia.c to bridge_pcmcia_80211.c. We already use similar solution with b43_pci_bridge.c. I didn't use "b43" in name of this new file as in theory any driver can operate on wireless core. Signed-off-by: Rafał Miłecki <zajec5@gmail.com> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
129 lines
2.7 KiB
C
129 lines
2.7 KiB
C
/*
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* Broadcom 43xx PCMCIA-SSB bridge module
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*
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* Copyright (c) 2007 Michael Buesch <m@bues.ch>
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*
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* Licensed under the GNU/GPL. See COPYING for details.
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*/
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#include <linux/ssb/ssb.h>
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#include <linux/slab.h>
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#include <linux/module.h>
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#include <pcmcia/cistpl.h>
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#include <pcmcia/ciscode.h>
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#include <pcmcia/ds.h>
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#include <pcmcia/cisreg.h>
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#include "ssb_private.h"
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static const struct pcmcia_device_id ssb_host_pcmcia_tbl[] = {
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PCMCIA_DEVICE_MANF_CARD(0x2D0, 0x448),
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PCMCIA_DEVICE_MANF_CARD(0x2D0, 0x476),
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PCMCIA_DEVICE_NULL,
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};
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MODULE_DEVICE_TABLE(pcmcia, ssb_host_pcmcia_tbl);
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static int ssb_host_pcmcia_probe(struct pcmcia_device *dev)
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{
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struct ssb_bus *ssb;
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int err = -ENOMEM;
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int res = 0;
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ssb = kzalloc(sizeof(*ssb), GFP_KERNEL);
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if (!ssb)
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goto out_error;
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err = -ENODEV;
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dev->config_flags |= CONF_ENABLE_IRQ;
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dev->resource[2]->flags |= WIN_ENABLE | WIN_DATA_WIDTH_16 |
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WIN_USE_WAIT;
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dev->resource[2]->start = 0;
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dev->resource[2]->end = SSB_CORE_SIZE;
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res = pcmcia_request_window(dev, dev->resource[2], 250);
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if (res != 0)
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goto err_kfree_ssb;
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res = pcmcia_map_mem_page(dev, dev->resource[2], 0);
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if (res != 0)
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goto err_disable;
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if (!dev->irq)
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goto err_disable;
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res = pcmcia_enable_device(dev);
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if (res != 0)
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goto err_disable;
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err = ssb_bus_pcmciabus_register(ssb, dev, dev->resource[2]->start);
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if (err)
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goto err_disable;
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dev->priv = ssb;
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return 0;
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err_disable:
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pcmcia_disable_device(dev);
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err_kfree_ssb:
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kfree(ssb);
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out_error:
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ssb_err("Initialization failed (%d, %d)\n", res, err);
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return err;
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}
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static void ssb_host_pcmcia_remove(struct pcmcia_device *dev)
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{
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struct ssb_bus *ssb = dev->priv;
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ssb_bus_unregister(ssb);
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pcmcia_disable_device(dev);
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kfree(ssb);
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dev->priv = NULL;
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}
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#ifdef CONFIG_PM
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static int ssb_host_pcmcia_suspend(struct pcmcia_device *dev)
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{
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struct ssb_bus *ssb = dev->priv;
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return ssb_bus_suspend(ssb);
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}
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static int ssb_host_pcmcia_resume(struct pcmcia_device *dev)
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{
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struct ssb_bus *ssb = dev->priv;
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return ssb_bus_resume(ssb);
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}
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#else /* CONFIG_PM */
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# define ssb_host_pcmcia_suspend NULL
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# define ssb_host_pcmcia_resume NULL
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#endif /* CONFIG_PM */
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static struct pcmcia_driver ssb_host_pcmcia_driver = {
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.owner = THIS_MODULE,
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.name = "ssb-pcmcia",
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.id_table = ssb_host_pcmcia_tbl,
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.probe = ssb_host_pcmcia_probe,
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.remove = ssb_host_pcmcia_remove,
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.suspend = ssb_host_pcmcia_suspend,
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.resume = ssb_host_pcmcia_resume,
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};
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/*
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* These are not module init/exit functions!
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* The module_pcmcia_driver() helper cannot be used here.
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*/
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int ssb_host_pcmcia_init(void)
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{
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return pcmcia_register_driver(&ssb_host_pcmcia_driver);
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}
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void ssb_host_pcmcia_exit(void)
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{
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pcmcia_unregister_driver(&ssb_host_pcmcia_driver);
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}
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