CoCalc -- driver_chipcommon.c

GitHub Repository: awilliam/linux-vfio
Path: blob/master/drivers/bcma/driver_chipcommon.c
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/*
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 * Broadcom specific AMBA
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 * ChipCommon core driver
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 *
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 * Copyright 2005, Broadcom Corporation
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 * Copyright 2006, 2007, Michael Buesch <[email protected]>
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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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#include <linux/bcma/bcma.h>
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static inline u32 bcma_cc_write32_masked(struct bcma_drv_cc *cc, u16 offset,
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					 u32 mask, u32 value)
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{
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	value &= mask;
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	value |= bcma_cc_read32(cc, offset) & ~mask;
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	bcma_cc_write32(cc, offset, value);
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	return value;
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}
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void bcma_core_chipcommon_init(struct bcma_drv_cc *cc)
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{
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	if (cc->core->id.rev >= 11)
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		cc->status = bcma_cc_read32(cc, BCMA_CC_CHIPSTAT);
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	cc->capabilities = bcma_cc_read32(cc, BCMA_CC_CAP);
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	if (cc->core->id.rev >= 35)
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		cc->capabilities_ext = bcma_cc_read32(cc, BCMA_CC_CAP_EXT);
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	if (cc->core->id.rev >= 20) {
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		bcma_cc_write32(cc, BCMA_CC_GPIOPULLUP, 0);
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		bcma_cc_write32(cc, BCMA_CC_GPIOPULLDOWN, 0);
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	}
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	if (cc->capabilities & BCMA_CC_CAP_PMU)
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		bcma_pmu_init(cc);
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	if (cc->capabilities & BCMA_CC_CAP_PCTL)
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		pr_err("Power control not implemented!\n");
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}
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/* Set chip watchdog reset timer to fire in 'ticks' backplane cycles */
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void bcma_chipco_watchdog_timer_set(struct bcma_drv_cc *cc, u32 ticks)
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{
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	/* instant NMI */
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	bcma_cc_write32(cc, BCMA_CC_WATCHDOG, ticks);
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}
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void bcma_chipco_irq_mask(struct bcma_drv_cc *cc, u32 mask, u32 value)
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{
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	bcma_cc_write32_masked(cc, BCMA_CC_IRQMASK, mask, value);
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}
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u32 bcma_chipco_irq_status(struct bcma_drv_cc *cc, u32 mask)
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{
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	return bcma_cc_read32(cc, BCMA_CC_IRQSTAT) & mask;
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}
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u32 bcma_chipco_gpio_in(struct bcma_drv_cc *cc, u32 mask)
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{
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	return bcma_cc_read32(cc, BCMA_CC_GPIOIN) & mask;
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}
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u32 bcma_chipco_gpio_out(struct bcma_drv_cc *cc, u32 mask, u32 value)
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{
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	return bcma_cc_write32_masked(cc, BCMA_CC_GPIOOUT, mask, value);
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}
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u32 bcma_chipco_gpio_outen(struct bcma_drv_cc *cc, u32 mask, u32 value)
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{
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	return bcma_cc_write32_masked(cc, BCMA_CC_GPIOOUTEN, mask, value);
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}
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u32 bcma_chipco_gpio_control(struct bcma_drv_cc *cc, u32 mask, u32 value)
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{
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	return bcma_cc_write32_masked(cc, BCMA_CC_GPIOCTL, mask, value);
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}
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EXPORT_SYMBOL_GPL(bcma_chipco_gpio_control);
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u32 bcma_chipco_gpio_intmask(struct bcma_drv_cc *cc, u32 mask, u32 value)
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{
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	return bcma_cc_write32_masked(cc, BCMA_CC_GPIOIRQ, mask, value);
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}
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u32 bcma_chipco_gpio_polarity(struct bcma_drv_cc *cc, u32 mask, u32 value)
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{
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	return bcma_cc_write32_masked(cc, BCMA_CC_GPIOPOL, mask, value);
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}
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