1 /*
2  * Broadcom specific AMBA
3  * ChipCommon core driver
4  *
5  * Copyright 2005, Broadcom Corporation
6  * Copyright 2006, 2007, Michael Buesch <m@bues.ch>
7  *
8  * Licensed under the GNU/GPL. See COPYING for details.
9  */
10 
11 #include "bcma_private.h"
12 #include <linux/bcma/bcma.h>
13 
14 static inline u32 bcma_cc_write32_masked(struct bcma_drv_cc *cc, u16 offset,
15 					 u32 mask, u32 value)
16 {
17 	value &= mask;
18 	value |= bcma_cc_read32(cc, offset) & ~mask;
19 	bcma_cc_write32(cc, offset, value);
20 
21 	return value;
22 }
23 
24 void bcma_core_chipcommon_init(struct bcma_drv_cc *cc)
25 {
26 	u32 leddc_on = 10;
27 	u32 leddc_off = 90;
28 
29 	if (cc->core->id.rev >= 11)
30 		cc->status = bcma_cc_read32(cc, BCMA_CC_CHIPSTAT);
31 	cc->capabilities = bcma_cc_read32(cc, BCMA_CC_CAP);
32 	if (cc->core->id.rev >= 35)
33 		cc->capabilities_ext = bcma_cc_read32(cc, BCMA_CC_CAP_EXT);
34 
35 	if (cc->core->id.rev >= 20) {
36 		bcma_cc_write32(cc, BCMA_CC_GPIOPULLUP, 0);
37 		bcma_cc_write32(cc, BCMA_CC_GPIOPULLDOWN, 0);
38 	}
39 
40 	if (cc->capabilities & BCMA_CC_CAP_PMU)
41 		bcma_pmu_init(cc);
42 	if (cc->capabilities & BCMA_CC_CAP_PCTL)
43 		pr_err("Power control not implemented!\n");
44 
45 	if (cc->core->id.rev >= 16) {
46 		if (cc->core->bus->sprom.leddc_on_time &&
47 		    cc->core->bus->sprom.leddc_off_time) {
48 			leddc_on = cc->core->bus->sprom.leddc_on_time;
49 			leddc_off = cc->core->bus->sprom.leddc_off_time;
50 		}
51 		bcma_cc_write32(cc, BCMA_CC_GPIOTIMER,
52 			((leddc_on << BCMA_CC_GPIOTIMER_ONTIME_SHIFT) |
53 			 (leddc_off << BCMA_CC_GPIOTIMER_OFFTIME_SHIFT)));
54 	}
55 }
56 
57 /* Set chip watchdog reset timer to fire in 'ticks' backplane cycles */
58 void bcma_chipco_watchdog_timer_set(struct bcma_drv_cc *cc, u32 ticks)
59 {
60 	/* instant NMI */
61 	bcma_cc_write32(cc, BCMA_CC_WATCHDOG, ticks);
62 }
63 
64 void bcma_chipco_irq_mask(struct bcma_drv_cc *cc, u32 mask, u32 value)
65 {
66 	bcma_cc_write32_masked(cc, BCMA_CC_IRQMASK, mask, value);
67 }
68 
69 u32 bcma_chipco_irq_status(struct bcma_drv_cc *cc, u32 mask)
70 {
71 	return bcma_cc_read32(cc, BCMA_CC_IRQSTAT) & mask;
72 }
73 
74 u32 bcma_chipco_gpio_in(struct bcma_drv_cc *cc, u32 mask)
75 {
76 	return bcma_cc_read32(cc, BCMA_CC_GPIOIN) & mask;
77 }
78 
79 u32 bcma_chipco_gpio_out(struct bcma_drv_cc *cc, u32 mask, u32 value)
80 {
81 	return bcma_cc_write32_masked(cc, BCMA_CC_GPIOOUT, mask, value);
82 }
83 
84 u32 bcma_chipco_gpio_outen(struct bcma_drv_cc *cc, u32 mask, u32 value)
85 {
86 	return bcma_cc_write32_masked(cc, BCMA_CC_GPIOOUTEN, mask, value);
87 }
88 
89 u32 bcma_chipco_gpio_control(struct bcma_drv_cc *cc, u32 mask, u32 value)
90 {
91 	return bcma_cc_write32_masked(cc, BCMA_CC_GPIOCTL, mask, value);
92 }
93 EXPORT_SYMBOL_GPL(bcma_chipco_gpio_control);
94 
95 u32 bcma_chipco_gpio_intmask(struct bcma_drv_cc *cc, u32 mask, u32 value)
96 {
97 	return bcma_cc_write32_masked(cc, BCMA_CC_GPIOIRQ, mask, value);
98 }
99 
100 u32 bcma_chipco_gpio_polarity(struct bcma_drv_cc *cc, u32 mask, u32 value)
101 {
102 	return bcma_cc_write32_masked(cc, BCMA_CC_GPIOPOL, mask, value);
103 }
104