2011-05-10 00:56:46 +08:00
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/*
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* Broadcom specific AMBA
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* Bus subsystem
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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 "bcma_private.h"
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2011-07-02 04:06:37 +08:00
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#include <linux/module.h>
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2012-08-11 03:23:53 +08:00
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#include <linux/platform_device.h>
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2011-05-10 00:56:46 +08:00
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#include <linux/bcma/bcma.h>
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2011-06-26 16:19:44 +08:00
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#include <linux/slab.h>
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2011-05-10 00:56:46 +08:00
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MODULE_DESCRIPTION("Broadcom's specific AMBA driver");
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MODULE_LICENSE("GPL");
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2012-01-31 07:03:36 +08:00
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/* contains the number the next bus should get. */
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static unsigned int bcma_bus_next_num = 0;
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/* bcma_buses_mutex locks the bcma_bus_next_num */
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static DEFINE_MUTEX(bcma_buses_mutex);
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2011-05-10 00:56:46 +08:00
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static int bcma_bus_match(struct device *dev, struct device_driver *drv);
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static int bcma_device_probe(struct device *dev);
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static int bcma_device_remove(struct device *dev);
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2011-08-20 04:14:47 +08:00
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static int bcma_device_uevent(struct device *dev, struct kobj_uevent_env *env);
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2011-05-10 00:56:46 +08:00
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static ssize_t manuf_show(struct device *dev, struct device_attribute *attr, char *buf)
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{
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struct bcma_device *core = container_of(dev, struct bcma_device, dev);
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return sprintf(buf, "0x%03X\n", core->id.manuf);
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}
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static ssize_t id_show(struct device *dev, struct device_attribute *attr, char *buf)
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{
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struct bcma_device *core = container_of(dev, struct bcma_device, dev);
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return sprintf(buf, "0x%03X\n", core->id.id);
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}
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static ssize_t rev_show(struct device *dev, struct device_attribute *attr, char *buf)
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{
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struct bcma_device *core = container_of(dev, struct bcma_device, dev);
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return sprintf(buf, "0x%02X\n", core->id.rev);
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}
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static ssize_t class_show(struct device *dev, struct device_attribute *attr, char *buf)
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{
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struct bcma_device *core = container_of(dev, struct bcma_device, dev);
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return sprintf(buf, "0x%X\n", core->id.class);
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}
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static struct device_attribute bcma_device_attrs[] = {
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__ATTR_RO(manuf),
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__ATTR_RO(id),
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__ATTR_RO(rev),
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__ATTR_RO(class),
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__ATTR_NULL,
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};
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static struct bus_type bcma_bus_type = {
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.name = "bcma",
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.match = bcma_bus_match,
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.probe = bcma_device_probe,
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.remove = bcma_device_remove,
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2011-08-20 04:14:47 +08:00
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.uevent = bcma_device_uevent,
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2011-05-10 00:56:46 +08:00
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.dev_attrs = bcma_device_attrs,
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};
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2012-07-11 05:45:49 +08:00
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static u16 bcma_cc_core_id(struct bcma_bus *bus)
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{
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if (bus->chipinfo.id == BCMA_CHIP_ID_BCM4706)
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return BCMA_CORE_4706_CHIPCOMMON;
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return BCMA_CORE_CHIPCOMMON;
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}
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2012-02-28 07:56:09 +08:00
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struct bcma_device *bcma_find_core(struct bcma_bus *bus, u16 coreid)
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2011-05-10 00:56:46 +08:00
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{
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struct bcma_device *core;
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list_for_each_entry(core, &bus->cores, list) {
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if (core->id.id == coreid)
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return core;
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}
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return NULL;
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}
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2012-02-28 07:56:09 +08:00
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EXPORT_SYMBOL_GPL(bcma_find_core);
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2011-05-10 00:56:46 +08:00
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2013-01-04 07:51:20 +08:00
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struct bcma_device *bcma_find_core_unit(struct bcma_bus *bus, u16 coreid,
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u8 unit)
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2012-09-30 02:40:18 +08:00
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{
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struct bcma_device *core;
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list_for_each_entry(core, &bus->cores, list) {
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if (core->id.id == coreid && core->core_unit == unit)
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return core;
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}
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return NULL;
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}
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2011-05-10 00:56:46 +08:00
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static void bcma_release_core_dev(struct device *dev)
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{
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struct bcma_device *core = container_of(dev, struct bcma_device, dev);
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2011-07-23 07:20:08 +08:00
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if (core->io_addr)
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iounmap(core->io_addr);
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if (core->io_wrap)
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iounmap(core->io_wrap);
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2011-05-10 00:56:46 +08:00
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kfree(core);
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}
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static int bcma_register_cores(struct bcma_bus *bus)
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{
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struct bcma_device *core;
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int err, dev_id = 0;
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list_for_each_entry(core, &bus->cores, list) {
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/* We support that cores ourself */
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switch (core->id.id) {
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2012-07-11 05:45:49 +08:00
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case BCMA_CORE_4706_CHIPCOMMON:
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2011-05-10 00:56:46 +08:00
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case BCMA_CORE_CHIPCOMMON:
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case BCMA_CORE_PCI:
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case BCMA_CORE_PCIE:
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2011-07-23 07:20:09 +08:00
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case BCMA_CORE_MIPS_74K:
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2012-07-11 15:23:43 +08:00
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case BCMA_CORE_4706_MAC_GBIT_COMMON:
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2011-05-10 00:56:46 +08:00
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continue;
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}
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core->dev.release = bcma_release_core_dev;
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core->dev.bus = &bcma_bus_type;
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2012-01-31 07:03:36 +08:00
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dev_set_name(&core->dev, "bcma%d:%d", bus->num, dev_id);
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2011-05-10 00:56:46 +08:00
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switch (bus->hosttype) {
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case BCMA_HOSTTYPE_PCI:
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core->dev.parent = &bus->host_pci->dev;
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2011-05-18 17:40:22 +08:00
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core->dma_dev = &bus->host_pci->dev;
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core->irq = bus->host_pci->irq;
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2011-05-10 00:56:46 +08:00
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break;
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2011-07-23 07:20:08 +08:00
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case BCMA_HOSTTYPE_SOC:
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core->dev.dma_mask = &core->dev.coherent_dma_mask;
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core->dma_dev = &core->dev;
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break;
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2011-05-10 00:56:46 +08:00
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case BCMA_HOSTTYPE_SDIO:
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break;
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}
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err = device_register(&core->dev);
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if (err) {
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2012-07-06 04:07:32 +08:00
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bcma_err(bus,
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"Could not register dev for core 0x%03X\n",
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core->id.id);
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2011-05-10 00:56:46 +08:00
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continue;
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}
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core->dev_registered = true;
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dev_id++;
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}
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2013-01-25 18:37:26 +08:00
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#ifdef CONFIG_BCMA_DRIVER_MIPS
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if (bus->drv_cc.pflash.present) {
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err = platform_device_register(&bcma_pflash_dev);
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if (err)
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bcma_err(bus, "Error registering parallel flash\n");
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}
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#endif
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2012-08-11 03:23:53 +08:00
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#ifdef CONFIG_BCMA_SFLASH
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if (bus->drv_cc.sflash.present) {
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err = platform_device_register(&bcma_sflash_dev);
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if (err)
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bcma_err(bus, "Error registering serial flash\n");
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}
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#endif
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2012-08-12 19:08:05 +08:00
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#ifdef CONFIG_BCMA_NFLASH
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if (bus->drv_cc.nflash.present) {
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err = platform_device_register(&bcma_nflash_dev);
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if (err)
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bcma_err(bus, "Error registering NAND flash\n");
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}
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#endif
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2012-11-21 06:24:30 +08:00
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err = bcma_gpio_init(&bus->drv_cc);
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if (err == -ENOTSUPP)
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bcma_debug(bus, "GPIO driver not activated\n");
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else if (err)
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bcma_err(bus, "Error registering GPIO driver: %i\n", err);
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2012-08-12 19:08:05 +08:00
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2012-12-06 01:46:02 +08:00
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if (bus->hosttype == BCMA_HOSTTYPE_SOC) {
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err = bcma_chipco_watchdog_register(&bus->drv_cc);
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if (err)
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bcma_err(bus, "Error registering watchdog driver\n");
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}
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2011-05-10 00:56:46 +08:00
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return 0;
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}
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static void bcma_unregister_cores(struct bcma_bus *bus)
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{
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2012-10-11 20:05:15 +08:00
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struct bcma_device *core, *tmp;
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2011-05-10 00:56:46 +08:00
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2012-10-11 20:05:15 +08:00
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list_for_each_entry_safe(core, tmp, &bus->cores, list) {
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list_del(&core->list);
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2011-05-10 00:56:46 +08:00
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if (core->dev_registered)
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device_unregister(&core->dev);
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}
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2012-12-06 01:46:02 +08:00
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if (bus->hosttype == BCMA_HOSTTYPE_SOC)
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platform_device_unregister(bus->drv_cc.watchdog);
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2011-05-10 00:56:46 +08:00
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}
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2012-12-22 07:12:59 +08:00
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int bcma_bus_register(struct bcma_bus *bus)
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2011-05-10 00:56:46 +08:00
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{
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int err;
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struct bcma_device *core;
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2012-01-31 07:03:36 +08:00
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mutex_lock(&bcma_buses_mutex);
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bus->num = bcma_bus_next_num++;
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mutex_unlock(&bcma_buses_mutex);
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2011-05-10 00:56:46 +08:00
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/* Scan for devices (cores) */
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err = bcma_bus_scan(bus);
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if (err) {
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2012-07-06 04:07:32 +08:00
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bcma_err(bus, "Failed to scan: %d\n", err);
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2011-05-10 00:56:46 +08:00
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return -1;
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}
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2012-09-30 02:29:50 +08:00
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/* Early init CC core */
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core = bcma_find_core(bus, bcma_cc_core_id(bus));
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if (core) {
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bus->drv_cc.core = core;
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bcma_core_chipcommon_early_init(&bus->drv_cc);
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}
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/* Try to get SPROM */
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err = bcma_sprom_get(bus);
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if (err == -ENOENT) {
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bcma_err(bus, "No SPROM available\n");
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} else if (err)
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bcma_err(bus, "Failed to get SPROM: %d\n", err);
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2011-05-10 00:56:46 +08:00
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/* Init CC core */
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2012-07-11 05:45:49 +08:00
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core = bcma_find_core(bus, bcma_cc_core_id(bus));
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2011-05-10 00:56:46 +08:00
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if (core) {
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bus->drv_cc.core = core;
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bcma_core_chipcommon_init(&bus->drv_cc);
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}
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2011-07-23 07:20:09 +08:00
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/* Init MIPS core */
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core = bcma_find_core(bus, BCMA_CORE_MIPS_74K);
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if (core) {
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bus->drv_mips.core = core;
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bcma_core_mips_init(&bus->drv_mips);
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}
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2011-05-10 00:56:46 +08:00
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/* Init PCIE core */
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2012-09-30 02:40:18 +08:00
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core = bcma_find_core_unit(bus, BCMA_CORE_PCIE, 0);
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if (core) {
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bus->drv_pci[0].core = core;
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bcma_core_pci_init(&bus->drv_pci[0]);
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}
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/* Init PCIE core */
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core = bcma_find_core_unit(bus, BCMA_CORE_PCIE, 1);
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2011-05-10 00:56:46 +08:00
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if (core) {
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2012-09-30 02:40:18 +08:00
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bus->drv_pci[1].core = core;
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bcma_core_pci_init(&bus->drv_pci[1]);
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2011-05-10 00:56:46 +08:00
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}
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2012-07-11 15:23:43 +08:00
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/* Init GBIT MAC COMMON core */
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core = bcma_find_core(bus, BCMA_CORE_4706_MAC_GBIT_COMMON);
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if (core) {
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bus->drv_gmac_cmn.core = core;
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bcma_core_gmac_cmn_init(&bus->drv_gmac_cmn);
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}
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2011-05-10 00:56:46 +08:00
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/* Register found cores */
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bcma_register_cores(bus);
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2012-07-06 04:07:32 +08:00
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bcma_info(bus, "Bus registered\n");
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2011-05-10 00:56:46 +08:00
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return 0;
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}
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void bcma_bus_unregister(struct bcma_bus *bus)
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{
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2012-08-17 04:42:30 +08:00
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struct bcma_device *cores[3];
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2013-02-04 06:25:33 +08:00
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int err;
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err = bcma_gpio_unregister(&bus->drv_cc);
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if (err == -EBUSY)
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bcma_err(bus, "Some GPIOs are still in use.\n");
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else if (err)
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bcma_err(bus, "Can not unregister GPIO driver: %i\n", err);
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2012-08-17 04:42:30 +08:00
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cores[0] = bcma_find_core(bus, BCMA_CORE_MIPS_74K);
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cores[1] = bcma_find_core(bus, BCMA_CORE_PCIE);
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cores[2] = bcma_find_core(bus, BCMA_CORE_4706_MAC_GBIT_COMMON);
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2011-05-10 00:56:46 +08:00
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bcma_unregister_cores(bus);
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2012-08-17 04:42:30 +08:00
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kfree(cores[2]);
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kfree(cores[1]);
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kfree(cores[0]);
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2011-05-10 00:56:46 +08:00
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}
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2011-07-23 07:20:07 +08:00
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int __init bcma_bus_early_register(struct bcma_bus *bus,
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struct bcma_device *core_cc,
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struct bcma_device *core_mips)
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{
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int err;
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struct bcma_device *core;
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struct bcma_device_id match;
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bcma_init_bus(bus);
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match.manuf = BCMA_MANUF_BCM;
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2012-07-11 05:45:49 +08:00
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match.id = bcma_cc_core_id(bus);
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2011-07-23 07:20:07 +08:00
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match.class = BCMA_CL_SIM;
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match.rev = BCMA_ANY_REV;
|
|
|
|
|
|
|
|
/* Scan for chip common core */
|
|
|
|
err = bcma_bus_scan_early(bus, &match, core_cc);
|
|
|
|
if (err) {
|
2012-07-06 04:07:32 +08:00
|
|
|
bcma_err(bus, "Failed to scan for common core: %d\n", err);
|
2011-07-23 07:20:07 +08:00
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
|
|
|
|
match.manuf = BCMA_MANUF_MIPS;
|
|
|
|
match.id = BCMA_CORE_MIPS_74K;
|
|
|
|
match.class = BCMA_CL_SIM;
|
|
|
|
match.rev = BCMA_ANY_REV;
|
|
|
|
|
|
|
|
/* Scan for mips core */
|
|
|
|
err = bcma_bus_scan_early(bus, &match, core_mips);
|
|
|
|
if (err) {
|
2012-07-06 04:07:32 +08:00
|
|
|
bcma_err(bus, "Failed to scan for mips core: %d\n", err);
|
2011-07-23 07:20:07 +08:00
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
|
2012-09-30 02:29:49 +08:00
|
|
|
/* Early init CC core */
|
2012-07-11 05:45:49 +08:00
|
|
|
core = bcma_find_core(bus, bcma_cc_core_id(bus));
|
2011-07-23 07:20:07 +08:00
|
|
|
if (core) {
|
|
|
|
bus->drv_cc.core = core;
|
2012-09-30 02:29:49 +08:00
|
|
|
bcma_core_chipcommon_early_init(&bus->drv_cc);
|
2011-07-23 07:20:07 +08:00
|
|
|
}
|
|
|
|
|
2012-09-30 02:29:49 +08:00
|
|
|
/* Early init MIPS core */
|
2011-07-23 07:20:09 +08:00
|
|
|
core = bcma_find_core(bus, BCMA_CORE_MIPS_74K);
|
|
|
|
if (core) {
|
|
|
|
bus->drv_mips.core = core;
|
2012-09-30 02:29:49 +08:00
|
|
|
bcma_core_mips_early_init(&bus->drv_mips);
|
2011-07-23 07:20:09 +08:00
|
|
|
}
|
|
|
|
|
2012-07-06 04:07:32 +08:00
|
|
|
bcma_info(bus, "Early bus registered\n");
|
2011-07-23 07:20:07 +08:00
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2011-12-10 05:16:07 +08:00
|
|
|
#ifdef CONFIG_PM
|
2012-01-14 06:58:40 +08:00
|
|
|
int bcma_bus_suspend(struct bcma_bus *bus)
|
|
|
|
{
|
2012-01-14 06:58:41 +08:00
|
|
|
struct bcma_device *core;
|
|
|
|
|
|
|
|
list_for_each_entry(core, &bus->cores, list) {
|
|
|
|
struct device_driver *drv = core->dev.driver;
|
|
|
|
if (drv) {
|
|
|
|
struct bcma_driver *adrv = container_of(drv, struct bcma_driver, drv);
|
|
|
|
if (adrv->suspend)
|
|
|
|
adrv->suspend(core);
|
|
|
|
}
|
|
|
|
}
|
2012-01-14 06:58:40 +08:00
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2011-12-10 05:16:07 +08:00
|
|
|
int bcma_bus_resume(struct bcma_bus *bus)
|
|
|
|
{
|
|
|
|
struct bcma_device *core;
|
|
|
|
|
|
|
|
/* Init CC core */
|
2012-07-11 05:45:49 +08:00
|
|
|
if (bus->drv_cc.core) {
|
2011-12-10 05:16:07 +08:00
|
|
|
bus->drv_cc.setup_done = false;
|
|
|
|
bcma_core_chipcommon_init(&bus->drv_cc);
|
|
|
|
}
|
|
|
|
|
2012-01-14 06:58:41 +08:00
|
|
|
list_for_each_entry(core, &bus->cores, list) {
|
|
|
|
struct device_driver *drv = core->dev.driver;
|
|
|
|
if (drv) {
|
|
|
|
struct bcma_driver *adrv = container_of(drv, struct bcma_driver, drv);
|
|
|
|
if (adrv->resume)
|
|
|
|
adrv->resume(core);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2011-12-10 05:16:07 +08:00
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
#endif
|
|
|
|
|
2011-05-10 00:56:46 +08:00
|
|
|
int __bcma_driver_register(struct bcma_driver *drv, struct module *owner)
|
|
|
|
{
|
|
|
|
drv->drv.name = drv->name;
|
|
|
|
drv->drv.bus = &bcma_bus_type;
|
|
|
|
drv->drv.owner = owner;
|
|
|
|
|
|
|
|
return driver_register(&drv->drv);
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL_GPL(__bcma_driver_register);
|
|
|
|
|
|
|
|
void bcma_driver_unregister(struct bcma_driver *drv)
|
|
|
|
{
|
|
|
|
driver_unregister(&drv->drv);
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL_GPL(bcma_driver_unregister);
|
|
|
|
|
|
|
|
static int bcma_bus_match(struct device *dev, struct device_driver *drv)
|
|
|
|
{
|
|
|
|
struct bcma_device *core = container_of(dev, struct bcma_device, dev);
|
|
|
|
struct bcma_driver *adrv = container_of(drv, struct bcma_driver, drv);
|
|
|
|
const struct bcma_device_id *cid = &core->id;
|
|
|
|
const struct bcma_device_id *did;
|
|
|
|
|
|
|
|
for (did = adrv->id_table; did->manuf || did->id || did->rev; did++) {
|
|
|
|
if ((did->manuf == cid->manuf || did->manuf == BCMA_ANY_MANUF) &&
|
|
|
|
(did->id == cid->id || did->id == BCMA_ANY_ID) &&
|
|
|
|
(did->rev == cid->rev || did->rev == BCMA_ANY_REV) &&
|
|
|
|
(did->class == cid->class || did->class == BCMA_ANY_CLASS))
|
|
|
|
return 1;
|
|
|
|
}
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int bcma_device_probe(struct device *dev)
|
|
|
|
{
|
|
|
|
struct bcma_device *core = container_of(dev, struct bcma_device, dev);
|
|
|
|
struct bcma_driver *adrv = container_of(dev->driver, struct bcma_driver,
|
|
|
|
drv);
|
|
|
|
int err = 0;
|
|
|
|
|
|
|
|
if (adrv->probe)
|
|
|
|
err = adrv->probe(core);
|
|
|
|
|
|
|
|
return err;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int bcma_device_remove(struct device *dev)
|
|
|
|
{
|
|
|
|
struct bcma_device *core = container_of(dev, struct bcma_device, dev);
|
|
|
|
struct bcma_driver *adrv = container_of(dev->driver, struct bcma_driver,
|
|
|
|
drv);
|
|
|
|
|
|
|
|
if (adrv->remove)
|
|
|
|
adrv->remove(core);
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2011-08-20 04:14:47 +08:00
|
|
|
static int bcma_device_uevent(struct device *dev, struct kobj_uevent_env *env)
|
|
|
|
{
|
|
|
|
struct bcma_device *core = container_of(dev, struct bcma_device, dev);
|
|
|
|
|
|
|
|
return add_uevent_var(env,
|
|
|
|
"MODALIAS=bcma:m%04Xid%04Xrev%02Xcl%02X",
|
|
|
|
core->id.manuf, core->id.id,
|
|
|
|
core->id.rev, core->id.class);
|
|
|
|
}
|
|
|
|
|
2011-05-10 00:56:46 +08:00
|
|
|
static int __init bcma_modinit(void)
|
|
|
|
{
|
|
|
|
int err;
|
|
|
|
|
|
|
|
err = bus_register(&bcma_bus_type);
|
|
|
|
if (err)
|
|
|
|
return err;
|
|
|
|
|
|
|
|
#ifdef CONFIG_BCMA_HOST_PCI
|
|
|
|
err = bcma_host_pci_init();
|
|
|
|
if (err) {
|
|
|
|
pr_err("PCI host initialization failed\n");
|
|
|
|
err = 0;
|
|
|
|
}
|
|
|
|
#endif
|
|
|
|
|
|
|
|
return err;
|
|
|
|
}
|
|
|
|
fs_initcall(bcma_modinit);
|
|
|
|
|
|
|
|
static void __exit bcma_modexit(void)
|
|
|
|
{
|
|
|
|
#ifdef CONFIG_BCMA_HOST_PCI
|
|
|
|
bcma_host_pci_exit();
|
|
|
|
#endif
|
|
|
|
bus_unregister(&bcma_bus_type);
|
|
|
|
}
|
|
|
|
module_exit(bcma_modexit)
|