[linux.git] / drivers / bcma / driver_chipcommon.c

/*
 * Broadcom specific AMBA
 * ChipCommon core driver
 *
 * Copyright 2005, Broadcom Corporation
 * Copyright 2006, 2007, Michael Buesch <[email protected]>
 * Copyright 2012, Hauke Mehrtens <[email protected]>
 *
 * Licensed under the GNU/GPL. See COPYING for details.
 */

#include "bcma_private.h"
#include <linux/bcm47xx_wdt.h>
#include <linux/export.h>
#include <linux/platform_device.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;
}

u32 bcma_chipco_get_alp_clock(struct bcma_drv_cc *cc)
{
	if (cc->capabilities & BCMA_CC_CAP_PMU)
		return bcma_pmu_get_alp_clock(cc);

	return 20000000;
}
EXPORT_SYMBOL_GPL(bcma_chipco_get_alp_clock);

static u32 bcma_chipco_watchdog_get_max_timer(struct bcma_drv_cc *cc)
{
	struct bcma_bus *bus = cc->core->bus;
	u32 nb;

	if (cc->capabilities & BCMA_CC_CAP_PMU) {
		if (bus->chipinfo.id == BCMA_CHIP_ID_BCM4706)
			nb = 32;
		else if (cc->core->id.rev < 26)
			nb = 16;
		else
			nb = (cc->core->id.rev >= 37) ? 32 : 24;
	} else {
		nb = 28;
	}
	if (nb == 32)
		return 0xffffffff;
	else
		return (1 << nb) - 1;
}

static u32 bcma_chipco_watchdog_timer_set_wdt(struct bcm47xx_wdt *wdt,
					      u32 ticks)
{
	struct bcma_drv_cc *cc = bcm47xx_wdt_get_drvdata(wdt);

	return bcma_chipco_watchdog_timer_set(cc, ticks);
}

static u32 bcma_chipco_watchdog_timer_set_ms_wdt(struct bcm47xx_wdt *wdt,
						 u32 ms)
{
	struct bcma_drv_cc *cc = bcm47xx_wdt_get_drvdata(wdt);
	u32 ticks;

	ticks = bcma_chipco_watchdog_timer_set(cc, cc->ticks_per_ms * ms);
	return ticks / cc->ticks_per_ms;
}

static int bcma_chipco_watchdog_ticks_per_ms(struct bcma_drv_cc *cc)
{
	struct bcma_bus *bus = cc->core->bus;

	if (cc->capabilities & BCMA_CC_CAP_PMU) {
		if (bus->chipinfo.id == BCMA_CHIP_ID_BCM4706)
			/* 4706 CC and PMU watchdogs are clocked at 1/4 of ALP clock */
			return bcma_chipco_get_alp_clock(cc) / 4000;
		else
			/* based on 32KHz ILP clock */
			return 32;
	} else {
		return bcma_chipco_get_alp_clock(cc) / 1000;
	}
}

int bcma_chipco_watchdog_register(struct bcma_drv_cc *cc)
{
	struct bcm47xx_wdt wdt = {};
	struct platform_device *pdev;

	wdt.driver_data = cc;
	wdt.timer_set = bcma_chipco_watchdog_timer_set_wdt;
	wdt.timer_set_ms = bcma_chipco_watchdog_timer_set_ms_wdt;
	wdt.max_timer_ms = bcma_chipco_watchdog_get_max_timer(cc) / cc->ticks_per_ms;

	pdev = platform_device_register_data(NULL, "bcm47xx-wdt",
					     cc->core->bus->num, &wdt,
					     sizeof(wdt));
	if (IS_ERR(pdev))
		return PTR_ERR(pdev);

	cc->watchdog = pdev;

	return 0;
}

void bcma_core_chipcommon_early_init(struct bcma_drv_cc *cc)
{
	if (cc->early_setup_done)
		return;

	spin_lock_init(&cc->gpio_lock);

	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->capabilities & BCMA_CC_CAP_PMU)
		bcma_pmu_early_init(cc);

	cc->early_setup_done = true;
}

void bcma_core_chipcommon_init(struct bcma_drv_cc *cc)
{
	u32 leddc_on = 10;
	u32 leddc_off = 90;

	if (cc->setup_done)
		return;

	bcma_core_chipcommon_early_init(cc);

	if (cc->core->id.rev >= 20) {
		u32 pullup = 0, pulldown = 0;

		if (cc->core->bus->chipinfo.id == BCMA_CHIP_ID_BCM43142) {
			pullup = 0x402e0;
			pulldown = 0x20500;
		}

		bcma_cc_write32(cc, BCMA_CC_GPIOPULLUP, pullup);
		bcma_cc_write32(cc, BCMA_CC_GPIOPULLDOWN, pulldown);
	}

	if (cc->capabilities & BCMA_CC_CAP_PMU)
		bcma_pmu_init(cc);
	if (cc->capabilities & BCMA_CC_CAP_PCTL)
		bcma_err(cc->core->bus, "Power control not implemented!\n");

	if (cc->core->id.rev >= 16) {
		if (cc->core->bus->sprom.leddc_on_time &&
		    cc->core->bus->sprom.leddc_off_time) {
			leddc_on = cc->core->bus->sprom.leddc_on_time;
			leddc_off = cc->core->bus->sprom.leddc_off_time;
		}
		bcma_cc_write32(cc, BCMA_CC_GPIOTIMER,
			((leddc_on << BCMA_CC_GPIOTIMER_ONTIME_SHIFT) |
			 (leddc_off << BCMA_CC_GPIOTIMER_OFFTIME_SHIFT)));
	}
	cc->ticks_per_ms = bcma_chipco_watchdog_ticks_per_ms(cc);

	cc->setup_done = true;
}

/* Set chip watchdog reset timer to fire in 'ticks' backplane cycles */
u32 bcma_chipco_watchdog_timer_set(struct bcma_drv_cc *cc, u32 ticks)
{
	u32 maxt;
	enum bcma_clkmode clkmode;

	maxt = bcma_chipco_watchdog_get_max_timer(cc);
	if (cc->capabilities & BCMA_CC_CAP_PMU) {
		if (ticks == 1)
			ticks = 2;
		else if (ticks > maxt)
			ticks = maxt;
		bcma_cc_write32(cc, BCMA_CC_PMU_WATCHDOG, ticks);
	} else {
		clkmode = ticks ? BCMA_CLKMODE_FAST : BCMA_CLKMODE_DYNAMIC;
		bcma_core_set_clockmode(cc->core, clkmode);
		if (ticks > maxt)
			ticks = maxt;
		/* instant NMI */
		bcma_cc_write32(cc, BCMA_CC_WATCHDOG, ticks);
	}
	return 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)
{
	unsigned long flags;
	u32 res;

	spin_lock_irqsave(&cc->gpio_lock, flags);
	res = bcma_cc_write32_masked(cc, BCMA_CC_GPIOOUT, mask, value);
	spin_unlock_irqrestore(&cc->gpio_lock, flags);

	return res;
}
EXPORT_SYMBOL_GPL(bcma_chipco_gpio_out);

u32 bcma_chipco_gpio_outen(struct bcma_drv_cc *cc, u32 mask, u32 value)
{
	unsigned long flags;
	u32 res;

	spin_lock_irqsave(&cc->gpio_lock, flags);
	res = bcma_cc_write32_masked(cc, BCMA_CC_GPIOOUTEN, mask, value);
	spin_unlock_irqrestore(&cc->gpio_lock, flags);

	return res;
}
EXPORT_SYMBOL_GPL(bcma_chipco_gpio_outen);

/*
 * If the bit is set to 0, chipcommon controlls this GPIO,
 * if the bit is set to 1, it is used by some part of the chip and not our code.
 */
u32 bcma_chipco_gpio_control(struct bcma_drv_cc *cc, u32 mask, u32 value)
{
	unsigned long flags;
	u32 res;

	spin_lock_irqsave(&cc->gpio_lock, flags);
	res = bcma_cc_write32_masked(cc, BCMA_CC_GPIOCTL, mask, value);
	spin_unlock_irqrestore(&cc->gpio_lock, flags);

	return res;
}
EXPORT_SYMBOL_GPL(bcma_chipco_gpio_control);

u32 bcma_chipco_gpio_intmask(struct bcma_drv_cc *cc, u32 mask, u32 value)
{
	unsigned long flags;
	u32 res;

	spin_lock_irqsave(&cc->gpio_lock, flags);
	res = bcma_cc_write32_masked(cc, BCMA_CC_GPIOIRQ, mask, value);
	spin_unlock_irqrestore(&cc->gpio_lock, flags);

	return res;
}

u32 bcma_chipco_gpio_polarity(struct bcma_drv_cc *cc, u32 mask, u32 value)
{
	unsigned long flags;
	u32 res;

	spin_lock_irqsave(&cc->gpio_lock, flags);
	res = bcma_cc_write32_masked(cc, BCMA_CC_GPIOPOL, mask, value);
	spin_unlock_irqrestore(&cc->gpio_lock, flags);

	return res;
}

u32 bcma_chipco_gpio_pullup(struct bcma_drv_cc *cc, u32 mask, u32 value)
{
	unsigned long flags;
	u32 res;

	if (cc->core->id.rev < 20)
		return 0;

	spin_lock_irqsave(&cc->gpio_lock, flags);
	res = bcma_cc_write32_masked(cc, BCMA_CC_GPIOPULLUP, mask, value);
	spin_unlock_irqrestore(&cc->gpio_lock, flags);

	return res;
}

u32 bcma_chipco_gpio_pulldown(struct bcma_drv_cc *cc, u32 mask, u32 value)
{
	unsigned long flags;
	u32 res;

	if (cc->core->id.rev < 20)
		return 0;

	spin_lock_irqsave(&cc->gpio_lock, flags);
	res = bcma_cc_write32_masked(cc, BCMA_CC_GPIOPULLDOWN, mask, value);
	spin_unlock_irqrestore(&cc->gpio_lock, flags);

	return res;
}

#ifdef CONFIG_BCMA_DRIVER_MIPS
void bcma_chipco_serial_init(struct bcma_drv_cc *cc)
{
	unsigned int irq;
	u32 baud_base;
	u32 i;
	unsigned int ccrev = cc->core->id.rev;
	struct bcma_serial_port *ports = cc->serial_ports;

	if (ccrev >= 11 && ccrev != 15) {
		baud_base = bcma_chipco_get_alp_clock(cc);
		if (ccrev >= 21) {
			/* Turn off UART clock before switching clocksource. */
			bcma_cc_write32(cc, BCMA_CC_CORECTL,
				       bcma_cc_read32(cc, BCMA_CC_CORECTL)
				       & ~BCMA_CC_CORECTL_UARTCLKEN);
		}
		/* Set the override bit so we don't divide it */
		bcma_cc_write32(cc, BCMA_CC_CORECTL,
			       bcma_cc_read32(cc, BCMA_CC_CORECTL)
			       | BCMA_CC_CORECTL_UARTCLK0);
		if (ccrev >= 21) {
			/* Re-enable the UART clock. */
			bcma_cc_write32(cc, BCMA_CC_CORECTL,
				       bcma_cc_read32(cc, BCMA_CC_CORECTL)
				       | BCMA_CC_CORECTL_UARTCLKEN);
		}
	} else {
		bcma_err(cc->core->bus, "serial not supported on this device ccrev: 0x%x\n", ccrev);
		return;
	}

	irq = bcma_core_irq(cc->core);

	/* Determine the registers of the UARTs */
	cc->nr_serial_ports = (cc->capabilities & BCMA_CC_CAP_NRUART);
	for (i = 0; i < cc->nr_serial_ports; i++) {
		ports[i].regs = cc->core->io_addr + BCMA_CC_UART0_DATA +
				(i * 256);
		ports[i].irq = irq;
		ports[i].baud_base = baud_base;
		ports[i].reg_shift = 0;
	}
}
#endif /* CONFIG_BCMA_DRIVER_MIPS */
Commit	Line	Data
8369ae33 RM	1	/*
	2	* Broadcom specific AMBA
	3	* ChipCommon core driver
	4	*
	5	* Copyright 2005, Broadcom Corporation
eb032b98	6	* Copyright 2006, 2007, Michael Buesch <[email protected]>
56fd5f07	7	* Copyright 2012, Hauke Mehrtens <[email protected]>
8369ae33 RM	8	*
	9	* Licensed under the GNU/GPL. See COPYING for details.
	10	*/
	11
	12	#include "bcma_private.h"
a22a3114	13	#include <linux/bcm47xx_wdt.h>
44a8e377	14	#include <linux/export.h>
a4855f39	15	#include <linux/platform_device.h>
8369ae33 RM	16	#include <linux/bcma/bcma.h>
	17
	18	static inline u32 bcma_cc_write32_masked(struct bcma_drv_cc *cc, u16 offset,
	19	u32 mask, u32 value)
	20	{
	21	value &= mask;
	22	value \|= bcma_cc_read32(cc, offset) & ~mask;
	23	bcma_cc_write32(cc, offset, value);
	24
	25	return value;
	26	}
	27
6951618b	28	u32 bcma_chipco_get_alp_clock(struct bcma_drv_cc *cc)
56fd5f07 HM	29	{
56fd5f07 HM	30	if (cc->capabilities & BCMA_CC_CAP_PMU)
5b5ac414	31	return bcma_pmu_get_alp_clock(cc);
56fd5f07 HM	32
	33	return 20000000;
	34	}
6951618b	35	EXPORT_SYMBOL_GPL(bcma_chipco_get_alp_clock);
56fd5f07	36
f6354c8c HM	37	static u32 bcma_chipco_watchdog_get_max_timer(struct bcma_drv_cc *cc)
	38	{
	39	struct bcma_bus *bus = cc->core->bus;
	40	u32 nb;
	41
	42	if (cc->capabilities & BCMA_CC_CAP_PMU) {
	43	if (bus->chipinfo.id == BCMA_CHIP_ID_BCM4706)
	44	nb = 32;
	45	else if (cc->core->id.rev < 26)
	46	nb = 16;
	47	else
	48	nb = (cc->core->id.rev >= 37) ? 32 : 24;
	49	} else {
	50	nb = 28;
	51	}
	52	if (nb == 32)
	53	return 0xffffffff;
	54	else
	55	return (1 << nb) - 1;
	56	}
	57
a22a3114 HM	58	static u32 bcma_chipco_watchdog_timer_set_wdt(struct bcm47xx_wdt *wdt,
	59	u32 ticks)
	60	{
	61	struct bcma_drv_cc *cc = bcm47xx_wdt_get_drvdata(wdt);
	62
	63	return bcma_chipco_watchdog_timer_set(cc, ticks);
	64	}
	65
	66	static u32 bcma_chipco_watchdog_timer_set_ms_wdt(struct bcm47xx_wdt *wdt,
	67	u32 ms)
	68	{
	69	struct bcma_drv_cc *cc = bcm47xx_wdt_get_drvdata(wdt);
	70	u32 ticks;
	71
	72	ticks = bcma_chipco_watchdog_timer_set(cc, cc->ticks_per_ms * ms);
	73	return ticks / cc->ticks_per_ms;
	74	}
	75
	76	static int bcma_chipco_watchdog_ticks_per_ms(struct bcma_drv_cc *cc)
	77	{
	78	struct bcma_bus *bus = cc->core->bus;
	79
	80	if (cc->capabilities & BCMA_CC_CAP_PMU) {
	81	if (bus->chipinfo.id == BCMA_CHIP_ID_BCM4706)
	82	/* 4706 CC and PMU watchdogs are clocked at 1/4 of ALP clock */
5b5ac414	83	return bcma_chipco_get_alp_clock(cc) / 4000;
a22a3114 HM	84	else
	85	/* based on 32KHz ILP clock */
	86	return 32;
	87	} else {
5b5ac414	88	return bcma_chipco_get_alp_clock(cc) / 1000;
a22a3114 HM	89	}
a22a3114 HM	90	}
f6354c8c	91
a4855f39 HM	92	int bcma_chipco_watchdog_register(struct bcma_drv_cc *cc)
	93	{
	94	struct bcm47xx_wdt wdt = {};
	95	struct platform_device *pdev;
	96
	97	wdt.driver_data = cc;
	98	wdt.timer_set = bcma_chipco_watchdog_timer_set_wdt;
	99	wdt.timer_set_ms = bcma_chipco_watchdog_timer_set_ms_wdt;
	100	wdt.max_timer_ms = bcma_chipco_watchdog_get_max_timer(cc) / cc->ticks_per_ms;
	101
	102	pdev = platform_device_register_data(NULL, "bcm47xx-wdt",
	103	cc->core->bus->num, &wdt,
	104	sizeof(wdt));
	105	if (IS_ERR(pdev))
	106	return PTR_ERR(pdev);
	107
	108	cc->watchdog = pdev;
	109
	110	return 0;
	111	}
	112
49655bb8	113	void bcma_core_chipcommon_early_init(struct bcma_drv_cc *cc)
8369ae33	114	{
49655bb8	115	if (cc->early_setup_done)
517f43e5 HM	116	return;
517f43e5 HM	117
ef85fb28 HM	118	spin_lock_init(&cc->gpio_lock);
ef85fb28 HM	119
8369ae33 RM	120	if (cc->core->id.rev >= 11)
	121	cc->status = bcma_cc_read32(cc, BCMA_CC_CHIPSTAT);
	122	cc->capabilities = bcma_cc_read32(cc, BCMA_CC_CAP);
	123	if (cc->core->id.rev >= 35)
	124	cc->capabilities_ext = bcma_cc_read32(cc, BCMA_CC_CAP_EXT);
	125
49655bb8 HM	126	if (cc->capabilities & BCMA_CC_CAP_PMU)
	127	bcma_pmu_early_init(cc);
	128
	129	cc->early_setup_done = true;
	130	}
	131
	132	void bcma_core_chipcommon_init(struct bcma_drv_cc *cc)
	133	{
	134	u32 leddc_on = 10;
	135	u32 leddc_off = 90;
	136
	137	if (cc->setup_done)
	138	return;
	139
	140	bcma_core_chipcommon_early_init(cc);
	141
1073e4ee	142	if (cc->core->id.rev >= 20) {
88f9b65d RM	143	u32 pullup = 0, pulldown = 0;
	144
	145	if (cc->core->bus->chipinfo.id == BCMA_CHIP_ID_BCM43142) {
	146	pullup = 0x402e0;
	147	pulldown = 0x20500;
	148	}
	149
	150	bcma_cc_write32(cc, BCMA_CC_GPIOPULLUP, pullup);
	151	bcma_cc_write32(cc, BCMA_CC_GPIOPULLDOWN, pulldown);
1073e4ee	152	}
8369ae33 RM	153
	154	if (cc->capabilities & BCMA_CC_CAP_PMU)
	155	bcma_pmu_init(cc);
	156	if (cc->capabilities & BCMA_CC_CAP_PCTL)
3d9d8af3	157	bcma_err(cc->core->bus, "Power control not implemented!\n");
18dfa495 RM	158
	159	if (cc->core->id.rev >= 16) {
	160	if (cc->core->bus->sprom.leddc_on_time &&
	161	cc->core->bus->sprom.leddc_off_time) {
	162	leddc_on = cc->core->bus->sprom.leddc_on_time;
	163	leddc_off = cc->core->bus->sprom.leddc_off_time;
	164	}
	165	bcma_cc_write32(cc, BCMA_CC_GPIOTIMER,
	166	((leddc_on << BCMA_CC_GPIOTIMER_ONTIME_SHIFT) \|
	167	(leddc_off << BCMA_CC_GPIOTIMER_OFFTIME_SHIFT)));
	168	}
a22a3114	169	cc->ticks_per_ms = bcma_chipco_watchdog_ticks_per_ms(cc);
517f43e5 HM	170
517f43e5 HM	171	cc->setup_done = true;
8369ae33 RM	172	}
	173
	174	/* Set chip watchdog reset timer to fire in 'ticks' backplane cycles */
a22a3114	175	u32 bcma_chipco_watchdog_timer_set(struct bcma_drv_cc *cc, u32 ticks)
8369ae33	176	{
f6354c8c HM	177	u32 maxt;
	178	enum bcma_clkmode clkmode;
	179
	180	maxt = bcma_chipco_watchdog_get_max_timer(cc);
	181	if (cc->capabilities & BCMA_CC_CAP_PMU) {
	182	if (ticks == 1)
	183	ticks = 2;
	184	else if (ticks > maxt)
	185	ticks = maxt;
	186	bcma_cc_write32(cc, BCMA_CC_PMU_WATCHDOG, ticks);
	187	} else {
	188	clkmode = ticks ? BCMA_CLKMODE_FAST : BCMA_CLKMODE_DYNAMIC;
	189	bcma_core_set_clockmode(cc->core, clkmode);
	190	if (ticks > maxt)
	191	ticks = maxt;
	192	/* instant NMI */
	193	bcma_cc_write32(cc, BCMA_CC_WATCHDOG, ticks);
	194	}
a22a3114	195	return ticks;
8369ae33 RM	196	}
	197
	198	void bcma_chipco_irq_mask(struct bcma_drv_cc *cc, u32 mask, u32 value)
	199	{
	200	bcma_cc_write32_masked(cc, BCMA_CC_IRQMASK, mask, value);
	201	}
	202
	203	u32 bcma_chipco_irq_status(struct bcma_drv_cc *cc, u32 mask)
	204	{
	205	return bcma_cc_read32(cc, BCMA_CC_IRQSTAT) & mask;
	206	}
	207
	208	u32 bcma_chipco_gpio_in(struct bcma_drv_cc *cc, u32 mask)
	209	{
	210	return bcma_cc_read32(cc, BCMA_CC_GPIOIN) & mask;
	211	}
	212
	213	u32 bcma_chipco_gpio_out(struct bcma_drv_cc *cc, u32 mask, u32 value)
	214	{
ef85fb28 HM	215	unsigned long flags;
	216	u32 res;
	217
	218	spin_lock_irqsave(&cc->gpio_lock, flags);
	219	res = bcma_cc_write32_masked(cc, BCMA_CC_GPIOOUT, mask, value);
	220	spin_unlock_irqrestore(&cc->gpio_lock, flags);
	221
	222	return res;
8369ae33	223	}
ca84a6c5	224	EXPORT_SYMBOL_GPL(bcma_chipco_gpio_out);
8369ae33 RM	225
	226	u32 bcma_chipco_gpio_outen(struct bcma_drv_cc *cc, u32 mask, u32 value)
	227	{
ef85fb28 HM	228	unsigned long flags;
	229	u32 res;
	230
	231	spin_lock_irqsave(&cc->gpio_lock, flags);
	232	res = bcma_cc_write32_masked(cc, BCMA_CC_GPIOOUTEN, mask, value);
	233	spin_unlock_irqrestore(&cc->gpio_lock, flags);
	234
	235	return res;
8369ae33	236	}
ca84a6c5	237	EXPORT_SYMBOL_GPL(bcma_chipco_gpio_outen);
8369ae33	238
3e8bb507 HM	239	/*
	240	* If the bit is set to 0, chipcommon controlls this GPIO,
	241	* if the bit is set to 1, it is used by some part of the chip and not our code.
	242	*/
8369ae33 RM	243	u32 bcma_chipco_gpio_control(struct bcma_drv_cc *cc, u32 mask, u32 value)
8369ae33 RM	244	{
ef85fb28 HM	245	unsigned long flags;
	246	u32 res;
	247
	248	spin_lock_irqsave(&cc->gpio_lock, flags);
	249	res = bcma_cc_write32_masked(cc, BCMA_CC_GPIOCTL, mask, value);
	250	spin_unlock_irqrestore(&cc->gpio_lock, flags);
	251
	252	return res;
8369ae33 RM	253	}
	254	EXPORT_SYMBOL_GPL(bcma_chipco_gpio_control);
	255
	256	u32 bcma_chipco_gpio_intmask(struct bcma_drv_cc *cc, u32 mask, u32 value)
	257	{
ef85fb28 HM	258	unsigned long flags;
	259	u32 res;
	260
	261	spin_lock_irqsave(&cc->gpio_lock, flags);
	262	res = bcma_cc_write32_masked(cc, BCMA_CC_GPIOIRQ, mask, value);
	263	spin_unlock_irqrestore(&cc->gpio_lock, flags);
	264
	265	return res;
8369ae33 RM	266	}
	267
	268	u32 bcma_chipco_gpio_polarity(struct bcma_drv_cc *cc, u32 mask, u32 value)
	269	{
ef85fb28 HM	270	unsigned long flags;
	271	u32 res;
	272
	273	spin_lock_irqsave(&cc->gpio_lock, flags);
	274	res = bcma_cc_write32_masked(cc, BCMA_CC_GPIOPOL, mask, value);
	275	spin_unlock_irqrestore(&cc->gpio_lock, flags);
	276
	277	return res;
8369ae33	278	}
e3afe0e5	279
ea3488f4 HM	280	u32 bcma_chipco_gpio_pullup(struct bcma_drv_cc *cc, u32 mask, u32 value)
	281	{
	282	unsigned long flags;
	283	u32 res;
	284
	285	if (cc->core->id.rev < 20)
	286	return 0;
	287
	288	spin_lock_irqsave(&cc->gpio_lock, flags);
	289	res = bcma_cc_write32_masked(cc, BCMA_CC_GPIOPULLUP, mask, value);
	290	spin_unlock_irqrestore(&cc->gpio_lock, flags);
	291
	292	return res;
	293	}
	294
	295	u32 bcma_chipco_gpio_pulldown(struct bcma_drv_cc *cc, u32 mask, u32 value)
	296	{
	297	unsigned long flags;
	298	u32 res;
	299
	300	if (cc->core->id.rev < 20)
	301	return 0;
	302
	303	spin_lock_irqsave(&cc->gpio_lock, flags);
	304	res = bcma_cc_write32_masked(cc, BCMA_CC_GPIOPULLDOWN, mask, value);
	305	spin_unlock_irqrestore(&cc->gpio_lock, flags);
	306
	307	return res;
8369ae33	308	}
e3afe0e5 HM	309
	310	#ifdef CONFIG_BCMA_DRIVER_MIPS
	311	void bcma_chipco_serial_init(struct bcma_drv_cc *cc)
	312	{
	313	unsigned int irq;
	314	u32 baud_base;
	315	u32 i;
	316	unsigned int ccrev = cc->core->id.rev;
	317	struct bcma_serial_port *ports = cc->serial_ports;
	318
	319	if (ccrev >= 11 && ccrev != 15) {
5b5ac414	320	baud_base = bcma_chipco_get_alp_clock(cc);
e3afe0e5 HM	321	if (ccrev >= 21) {
	322	/* Turn off UART clock before switching clocksource. */
	323	bcma_cc_write32(cc, BCMA_CC_CORECTL,
	324	bcma_cc_read32(cc, BCMA_CC_CORECTL)
	325	& ~BCMA_CC_CORECTL_UARTCLKEN);
	326	}
	327	/* Set the override bit so we don't divide it */
	328	bcma_cc_write32(cc, BCMA_CC_CORECTL,
	329	bcma_cc_read32(cc, BCMA_CC_CORECTL)
	330	\| BCMA_CC_CORECTL_UARTCLK0);
	331	if (ccrev >= 21) {
	332	/* Re-enable the UART clock. */
	333	bcma_cc_write32(cc, BCMA_CC_CORECTL,
	334	bcma_cc_read32(cc, BCMA_CC_CORECTL)
	335	\| BCMA_CC_CORECTL_UARTCLKEN);
	336	}
	337	} else {
9a89c3a8	338	bcma_err(cc->core->bus, "serial not supported on this device ccrev: 0x%x\n", ccrev);
e3afe0e5 HM	339	return;
	340	}
	341
e2aa19fa	342	irq = bcma_core_irq(cc->core);
e3afe0e5 HM	343
	344	/* Determine the registers of the UARTs */
	345	cc->nr_serial_ports = (cc->capabilities & BCMA_CC_CAP_NRUART);
	346	for (i = 0; i < cc->nr_serial_ports; i++) {
	347	ports[i].regs = cc->core->io_addr + BCMA_CC_UART0_DATA +
	348	(i * 256);
	349	ports[i].irq = irq;
	350	ports[i].baud_base = baud_base;
	351	ports[i].reg_shift = 0;
	352	}
	353	}
	354	#endif /* CONFIG_BCMA_DRIVER_MIPS */