[linux-2.6-block.git] / 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/export.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)
{
	u32 leddc_on = 10;
	u32 leddc_off = 90;

	if (cc->setup_done)
		return;

	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)
		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->setup_done = true;
}

/* 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);
}

#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) {
		/* Fixed ALP clock */
		baud_base = bcma_pmu_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_mips_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 <m@bues.ch>
8369ae33 RM	7	*
	8	* Licensed under the GNU/GPL. See COPYING for details.
	9	*/
	10
	11	#include "bcma_private.h"
44a8e377	12	#include <linux/export.h>
8369ae33 RM	13	#include <linux/bcma/bcma.h>
	14
	15	static inline u32 bcma_cc_write32_masked(struct bcma_drv_cc *cc, u16 offset,
	16	u32 mask, u32 value)
	17	{
	18	value &= mask;
	19	value \|= bcma_cc_read32(cc, offset) & ~mask;
	20	bcma_cc_write32(cc, offset, value);
	21
	22	return value;
	23	}
	24
	25	void bcma_core_chipcommon_init(struct bcma_drv_cc *cc)
	26	{
18dfa495 RM	27	u32 leddc_on = 10;
	28	u32 leddc_off = 90;
	29
517f43e5 HM	30	if (cc->setup_done)
	31	return;
	32
8369ae33 RM	33	if (cc->core->id.rev >= 11)
	34	cc->status = bcma_cc_read32(cc, BCMA_CC_CHIPSTAT);
	35	cc->capabilities = bcma_cc_read32(cc, BCMA_CC_CAP);
	36	if (cc->core->id.rev >= 35)
	37	cc->capabilities_ext = bcma_cc_read32(cc, BCMA_CC_CAP_EXT);
	38
1073e4ee RM	39	if (cc->core->id.rev >= 20) {
	40	bcma_cc_write32(cc, BCMA_CC_GPIOPULLUP, 0);
	41	bcma_cc_write32(cc, BCMA_CC_GPIOPULLDOWN, 0);
	42	}
8369ae33 RM	43
	44	if (cc->capabilities & BCMA_CC_CAP_PMU)
	45	bcma_pmu_init(cc);
	46	if (cc->capabilities & BCMA_CC_CAP_PCTL)
3d9d8af3	47	bcma_err(cc->core->bus, "Power control not implemented!\n");
18dfa495 RM	48
	49	if (cc->core->id.rev >= 16) {
	50	if (cc->core->bus->sprom.leddc_on_time &&
	51	cc->core->bus->sprom.leddc_off_time) {
	52	leddc_on = cc->core->bus->sprom.leddc_on_time;
	53	leddc_off = cc->core->bus->sprom.leddc_off_time;
	54	}
	55	bcma_cc_write32(cc, BCMA_CC_GPIOTIMER,
	56	((leddc_on << BCMA_CC_GPIOTIMER_ONTIME_SHIFT) \|
	57	(leddc_off << BCMA_CC_GPIOTIMER_OFFTIME_SHIFT)));
	58	}
517f43e5 HM	59
517f43e5 HM	60	cc->setup_done = true;
8369ae33 RM	61	}
	62
	63	/* Set chip watchdog reset timer to fire in 'ticks' backplane cycles */
	64	void bcma_chipco_watchdog_timer_set(struct bcma_drv_cc *cc, u32 ticks)
	65	{
	66	/* instant NMI */
	67	bcma_cc_write32(cc, BCMA_CC_WATCHDOG, ticks);
	68	}
	69
	70	void bcma_chipco_irq_mask(struct bcma_drv_cc *cc, u32 mask, u32 value)
	71	{
	72	bcma_cc_write32_masked(cc, BCMA_CC_IRQMASK, mask, value);
	73	}
	74
	75	u32 bcma_chipco_irq_status(struct bcma_drv_cc *cc, u32 mask)
	76	{
	77	return bcma_cc_read32(cc, BCMA_CC_IRQSTAT) & mask;
	78	}
	79
	80	u32 bcma_chipco_gpio_in(struct bcma_drv_cc *cc, u32 mask)
	81	{
	82	return bcma_cc_read32(cc, BCMA_CC_GPIOIN) & mask;
	83	}
	84
	85	u32 bcma_chipco_gpio_out(struct bcma_drv_cc *cc, u32 mask, u32 value)
	86	{
	87	return bcma_cc_write32_masked(cc, BCMA_CC_GPIOOUT, mask, value);
	88	}
	89
	90	u32 bcma_chipco_gpio_outen(struct bcma_drv_cc *cc, u32 mask, u32 value)
	91	{
	92	return bcma_cc_write32_masked(cc, BCMA_CC_GPIOOUTEN, mask, value);
	93	}
	94
	95	u32 bcma_chipco_gpio_control(struct bcma_drv_cc *cc, u32 mask, u32 value)
	96	{
	97	return bcma_cc_write32_masked(cc, BCMA_CC_GPIOCTL, mask, value);
	98	}
	99	EXPORT_SYMBOL_GPL(bcma_chipco_gpio_control);
	100
	101	u32 bcma_chipco_gpio_intmask(struct bcma_drv_cc *cc, u32 mask, u32 value)
	102	{
	103	return bcma_cc_write32_masked(cc, BCMA_CC_GPIOIRQ, mask, value);
	104	}
	105
	106	u32 bcma_chipco_gpio_polarity(struct bcma_drv_cc *cc, u32 mask, u32 value)
	107	{
	108	return bcma_cc_write32_masked(cc, BCMA_CC_GPIOPOL, mask, value);
	109	}
e3afe0e5 HM	110
	111	#ifdef CONFIG_BCMA_DRIVER_MIPS
	112	void bcma_chipco_serial_init(struct bcma_drv_cc *cc)
	113	{
	114	unsigned int irq;
	115	u32 baud_base;
	116	u32 i;
	117	unsigned int ccrev = cc->core->id.rev;
	118	struct bcma_serial_port *ports = cc->serial_ports;
	119
	120	if (ccrev >= 11 && ccrev != 15) {
	121	/* Fixed ALP clock */
	122	baud_base = bcma_pmu_alp_clock(cc);
	123	if (ccrev >= 21) {
	124	/* Turn off UART clock before switching clocksource. */
	125	bcma_cc_write32(cc, BCMA_CC_CORECTL,
	126	bcma_cc_read32(cc, BCMA_CC_CORECTL)
	127	& ~BCMA_CC_CORECTL_UARTCLKEN);
	128	}
	129	/* Set the override bit so we don't divide it */
	130	bcma_cc_write32(cc, BCMA_CC_CORECTL,
	131	bcma_cc_read32(cc, BCMA_CC_CORECTL)
	132	\| BCMA_CC_CORECTL_UARTCLK0);
	133	if (ccrev >= 21) {
	134	/* Re-enable the UART clock. */
	135	bcma_cc_write32(cc, BCMA_CC_CORECTL,
	136	bcma_cc_read32(cc, BCMA_CC_CORECTL)
	137	\| BCMA_CC_CORECTL_UARTCLKEN);
	138	}
	139	} else {
9a89c3a8	140	bcma_err(cc->core->bus, "serial not supported on this device ccrev: 0x%x\n", ccrev);
e3afe0e5 HM	141	return;
	142	}
	143
	144	irq = bcma_core_mips_irq(cc->core);
	145
	146	/* Determine the registers of the UARTs */
	147	cc->nr_serial_ports = (cc->capabilities & BCMA_CC_CAP_NRUART);
	148	for (i = 0; i < cc->nr_serial_ports; i++) {
	149	ports[i].regs = cc->core->io_addr + BCMA_CC_UART0_DATA +
	150	(i * 256);
	151	ports[i].irq = irq;
	152	ports[i].baud_base = baud_base;
	153	ports[i].reg_shift = 0;
	154	}
	155	}
	156	#endif /* CONFIG_BCMA_DRIVER_MIPS */