linux/drivers/bcma/driver_chipcommon.c

/*
 * Broadcom specific AMBA
 * ChipCommon core driver
 *
 * Copyright 2005, Broadcom Corporation
 * Copyright 2006, 2007, Michael Buesch <m@bues.ch>
 *
 * Licensed under the GNU/GPL. See COPYING for details.
 */

#include "bcma_private.h"
#include <linux/bcma/bcma.h>

static inline u32 bcma_cc_write32_masked(struct bcma_drv_cc *cc, u16 offset,
					 u32 mask, u32 value)
{
	value &= mask;
	value |= bcma_cc_read32(cc, offset) & ~mask;
	bcma_cc_write32(cc, offset, value);

	return value;
}

void bcma_core_chipcommon_init(struct bcma_drv_cc *cc)
{
	if (cc->core->id.rev >= 11)
		cc->status = bcma_cc_read32(cc, BCMA_CC_CHIPSTAT);
	cc->capabilities = bcma_cc_read32(cc, BCMA_CC_CAP);
	if (cc->core->id.rev >= 35)
		cc->capabilities_ext = bcma_cc_read32(cc, BCMA_CC_CAP_EXT);

	if (cc->core->id.rev >= 20) {
		bcma_cc_write32(cc, BCMA_CC_GPIOPULLUP, 0);
		bcma_cc_write32(cc, BCMA_CC_GPIOPULLDOWN, 0);
	}

	if (cc->capabilities & BCMA_CC_CAP_PMU)
		bcma_pmu_init(cc);
	if (cc->capabilities & BCMA_CC_CAP_PCTL)
		pr_err("Power control not implemented!\n");
}

/* Set chip watchdog reset timer to fire in 'ticks' backplane cycles */
void bcma_chipco_watchdog_timer_set(struct bcma_drv_cc *cc, u32 ticks)
{
	/* instant NMI */
	bcma_cc_write32(cc, BCMA_CC_WATCHDOG, ticks);
}

void bcma_chipco_irq_mask(struct bcma_drv_cc *cc, u32 mask, u32 value)
{
	bcma_cc_write32_masked(cc, BCMA_CC_IRQMASK, mask, value);
}

u32 bcma_chipco_irq_status(struct bcma_drv_cc *cc, u32 mask)
{
	return bcma_cc_read32(cc, BCMA_CC_IRQSTAT) & mask;
}

u32 bcma_chipco_gpio_in(struct bcma_drv_cc *cc, u32 mask)
{
	return bcma_cc_read32(cc, BCMA_CC_GPIOIN) & mask;
}

u32 bcma_chipco_gpio_out(struct bcma_drv_cc *cc, u32 mask, u32 value)
{
	return bcma_cc_write32_masked(cc, BCMA_CC_GPIOOUT, mask, value);
}

u32 bcma_chipco_gpio_outen(struct bcma_drv_cc *cc, u32 mask, u32 value)
{
	return bcma_cc_write32_masked(cc, BCMA_CC_GPIOOUTEN, mask, value);
}

u32 bcma_chipco_gpio_control(struct bcma_drv_cc *cc, u32 mask, u32 value)
{
	return bcma_cc_write32_masked(cc, BCMA_CC_GPIOCTL, mask, value);
}
EXPORT_SYMBOL_GPL(bcma_chipco_gpio_control);

u32 bcma_chipco_gpio_intmask(struct bcma_drv_cc *cc, u32 mask, u32 value)
{
	return bcma_cc_write32_masked(cc, BCMA_CC_GPIOIRQ, mask, value);
}

u32 bcma_chipco_gpio_polarity(struct bcma_drv_cc *cc, u32 mask, u32 value)
{
	return bcma_cc_write32_masked(cc, BCMA_CC_GPIOPOL, mask, value);
}