/*
   * Sonics Silicon Backplane
   * Embedded systems support code
   *
   * Copyright 2005-2008, Broadcom Corporation
   * Copyright 2006-2008, Michael Buesch <m@bues.ch>
   * Copyright 2012, Hauke Mehrtens <hauke@hauke-m.de>
   *
   * Licensed under the GNU/GPL. See COPYING for details.
   */
  
  #include <linux/export.h>
  #include <linux/platform_device.h>
  #include <linux/ssb/ssb.h>
  #include <linux/ssb/ssb_embedded.h>
  #include <linux/ssb/ssb_driver_pci.h>
  #include <linux/ssb/ssb_driver_gige.h>
  #include <linux/pci.h>
  
  #include "ssb_private.h"
  
  
  int ssb_watchdog_timer_set(struct ssb_bus *bus, u32 ticks)
  {
  	if (ssb_chipco_available(&bus->chipco)) {
  		ssb_chipco_watchdog_timer_set(&bus->chipco, ticks);
  		return 0;
  	}
  	if (ssb_extif_available(&bus->extif)) {
  		ssb_extif_watchdog_timer_set(&bus->extif, ticks);
  		return 0;
  	}
  	return -ENODEV;
  }
  EXPORT_SYMBOL(ssb_watchdog_timer_set);
  
  int ssb_watchdog_register(struct ssb_bus *bus)
  {
  	struct bcm47xx_wdt wdt = {};
  	struct platform_device *pdev;
  
  	if (ssb_chipco_available(&bus->chipco)) {
  		wdt.driver_data = &bus->chipco;
  		wdt.timer_set = ssb_chipco_watchdog_timer_set_wdt;
  		wdt.timer_set_ms = ssb_chipco_watchdog_timer_set_ms;
  		wdt.max_timer_ms = bus->chipco.max_timer_ms;
  	} else if (ssb_extif_available(&bus->extif)) {
  		wdt.driver_data = &bus->extif;
  		wdt.timer_set = ssb_extif_watchdog_timer_set_wdt;
  		wdt.timer_set_ms = ssb_extif_watchdog_timer_set_ms;
  		wdt.max_timer_ms = SSB_EXTIF_WATCHDOG_MAX_TIMER_MS;
  	} else {
  		return -ENODEV;
  	}
  
  	pdev = platform_device_register_data(NULL, "bcm47xx-wdt",
  					     bus->busnumber, &wdt,
  					     sizeof(wdt));
  	if (IS_ERR(pdev)) {
  		ssb_dbg("can not register watchdog device, err: %li
  ",
  			PTR_ERR(pdev));
  		return PTR_ERR(pdev);
  	}
  
  	bus->watchdog = pdev;
  	return 0;
  }
  
  u32 ssb_gpio_in(struct ssb_bus *bus, u32 mask)
  {
  	unsigned long flags;
  	u32 res = 0;
  
  	spin_lock_irqsave(&bus->gpio_lock, flags);
  	if (ssb_chipco_available(&bus->chipco))
  		res = ssb_chipco_gpio_in(&bus->chipco, mask);
  	else if (ssb_extif_available(&bus->extif))
  		res = ssb_extif_gpio_in(&bus->extif, mask);
  	else
  		SSB_WARN_ON(1);
  	spin_unlock_irqrestore(&bus->gpio_lock, flags);
  
  	return res;
  }
  EXPORT_SYMBOL(ssb_gpio_in);
  
  u32 ssb_gpio_out(struct ssb_bus *bus, u32 mask, u32 value)
  {
  	unsigned long flags;
  	u32 res = 0;
  
  	spin_lock_irqsave(&bus->gpio_lock, flags);
  	if (ssb_chipco_available(&bus->chipco))
  		res = ssb_chipco_gpio_out(&bus->chipco, mask, value);
  	else if (ssb_extif_available(&bus->extif))
  		res = ssb_extif_gpio_out(&bus->extif, mask, value);
  	else
  		SSB_WARN_ON(1);
  	spin_unlock_irqrestore(&bus->gpio_lock, flags);
  
  	return res;
  }
  EXPORT_SYMBOL(ssb_gpio_out);
  
  u32 ssb_gpio_outen(struct ssb_bus *bus, u32 mask, u32 value)
  {
  	unsigned long flags;
  	u32 res = 0;
  
  	spin_lock_irqsave(&bus->gpio_lock, flags);
  	if (ssb_chipco_available(&bus->chipco))
  		res = ssb_chipco_gpio_outen(&bus->chipco, mask, value);
  	else if (ssb_extif_available(&bus->extif))
  		res = ssb_extif_gpio_outen(&bus->extif, mask, value);
  	else
  		SSB_WARN_ON(1);
  	spin_unlock_irqrestore(&bus->gpio_lock, flags);
  
  	return res;
  }
  EXPORT_SYMBOL(ssb_gpio_outen);
  
  u32 ssb_gpio_control(struct ssb_bus *bus, u32 mask, u32 value)
  {
  	unsigned long flags;
  	u32 res = 0;
  
  	spin_lock_irqsave(&bus->gpio_lock, flags);
  	if (ssb_chipco_available(&bus->chipco))
  		res = ssb_chipco_gpio_control(&bus->chipco, mask, value);
  	spin_unlock_irqrestore(&bus->gpio_lock, flags);
  
  	return res;
  }
  EXPORT_SYMBOL(ssb_gpio_control);
  
  u32 ssb_gpio_intmask(struct ssb_bus *bus, u32 mask, u32 value)
  {
  	unsigned long flags;
  	u32 res = 0;
  
  	spin_lock_irqsave(&bus->gpio_lock, flags);
  	if (ssb_chipco_available(&bus->chipco))
  		res = ssb_chipco_gpio_intmask(&bus->chipco, mask, value);
  	else if (ssb_extif_available(&bus->extif))
  		res = ssb_extif_gpio_intmask(&bus->extif, mask, value);
  	else
  		SSB_WARN_ON(1);
  	spin_unlock_irqrestore(&bus->gpio_lock, flags);
  
  	return res;
  }
  EXPORT_SYMBOL(ssb_gpio_intmask);
  
  u32 ssb_gpio_polarity(struct ssb_bus *bus, u32 mask, u32 value)
  {
  	unsigned long flags;
  	u32 res = 0;
  
  	spin_lock_irqsave(&bus->gpio_lock, flags);
  	if (ssb_chipco_available(&bus->chipco))
  		res = ssb_chipco_gpio_polarity(&bus->chipco, mask, value);
  	else if (ssb_extif_available(&bus->extif))
  		res = ssb_extif_gpio_polarity(&bus->extif, mask, value);
  	else
  		SSB_WARN_ON(1);
  	spin_unlock_irqrestore(&bus->gpio_lock, flags);
  
  	return res;
  }
  EXPORT_SYMBOL(ssb_gpio_polarity);
  
  #ifdef CONFIG_SSB_DRIVER_GIGE
  static int gige_pci_init_callback(struct ssb_bus *bus, unsigned long data)
  {
  	struct pci_dev *pdev = (struct pci_dev *)data;
  	struct ssb_device *dev;
  	unsigned int i;
  	int res;
  
  	for (i = 0; i < bus->nr_devices; i++) {
  		dev = &(bus->devices[i]);
  		if (dev->id.coreid != SSB_DEV_ETHERNET_GBIT)
  			continue;
  		if (!dev->dev ||
  		    !dev->dev->driver ||
  		    !device_is_registered(dev->dev))
  			continue;
  		res = ssb_gige_pcibios_plat_dev_init(dev, pdev);
  		if (res >= 0)
  			return res;
  	}
  
  	return -ENODEV;
  }
  #endif /* CONFIG_SSB_DRIVER_GIGE */
  
  int ssb_pcibios_plat_dev_init(struct pci_dev *dev)
  {
  	int err;
  
  	err = ssb_pcicore_plat_dev_init(dev);
  	if (!err)
  		return 0;
  #ifdef CONFIG_SSB_DRIVER_GIGE
  	err = ssb_for_each_bus_call((unsigned long)dev, gige_pci_init_callback);
  	if (err >= 0)
  		return err;
  #endif
  	/* This is not a PCI device on any SSB device. */
  
  	return -ENODEV;
  }
  
  #ifdef CONFIG_SSB_DRIVER_GIGE
  static int gige_map_irq_callback(struct ssb_bus *bus, unsigned long data)
  {
  	const struct pci_dev *pdev = (const struct pci_dev *)data;
  	struct ssb_device *dev;
  	unsigned int i;
  	int res;
  
  	for (i = 0; i < bus->nr_devices; i++) {
  		dev = &(bus->devices[i]);
  		if (dev->id.coreid != SSB_DEV_ETHERNET_GBIT)
  			continue;
  		if (!dev->dev ||
  		    !dev->dev->driver ||
  		    !device_is_registered(dev->dev))
  			continue;
  		res = ssb_gige_map_irq(dev, pdev);
  		if (res >= 0)
  			return res;
  	}
  
  	return -ENODEV;
  }
  #endif /* CONFIG_SSB_DRIVER_GIGE */
  
  int ssb_pcibios_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
  {
  	int res;
  
  	/* Check if this PCI device is a device on a SSB bus or device
  	 * and return the IRQ number for it. */
  
  	res = ssb_pcicore_pcibios_map_irq(dev, slot, pin);
  	if (res >= 0)
  		return res;
  #ifdef CONFIG_SSB_DRIVER_GIGE
  	res = ssb_for_each_bus_call((unsigned long)dev, gige_map_irq_callback);
  	if (res >= 0)
  		return res;
  #endif
  	/* This is not a PCI device on any SSB device. */
  
  	return -ENODEV;
  }