2 * Broadcom specific AMBA
3 * ChipCommon core driver
5 * Copyright 2005, Broadcom Corporation
6 * Copyright 2006, 2007, Michael Buesch <m@bues.ch>
8 * Licensed under the GNU/GPL. See COPYING for details.
11 #include "bcma_private.h"
12 #include <linux/export.h>
13 #include <linux/bcma/bcma.h>
15 static inline u32 bcma_cc_write32_masked(struct bcma_drv_cc *cc, u16 offset,
19 value |= bcma_cc_read32(cc, offset) & ~mask;
20 bcma_cc_write32(cc, offset, value);
25 void bcma_core_chipcommon_init(struct bcma_drv_cc *cc)
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);
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);
44 if (cc->capabilities & BCMA_CC_CAP_PMU)
46 if (cc->capabilities & BCMA_CC_CAP_PCTL)
47 pr_err("Power control not implemented!\n");
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;
55 bcma_cc_write32(cc, BCMA_CC_GPIOTIMER,
56 ((leddc_on << BCMA_CC_GPIOTIMER_ONTIME_SHIFT) |
57 (leddc_off << BCMA_CC_GPIOTIMER_OFFTIME_SHIFT)));
60 cc->setup_done = true;
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)
67 bcma_cc_write32(cc, BCMA_CC_WATCHDOG, ticks);
70 void bcma_chipco_irq_mask(struct bcma_drv_cc *cc, u32 mask, u32 value)
72 bcma_cc_write32_masked(cc, BCMA_CC_IRQMASK, mask, value);
75 u32 bcma_chipco_irq_status(struct bcma_drv_cc *cc, u32 mask)
77 return bcma_cc_read32(cc, BCMA_CC_IRQSTAT) & mask;
80 u32 bcma_chipco_gpio_in(struct bcma_drv_cc *cc, u32 mask)
82 return bcma_cc_read32(cc, BCMA_CC_GPIOIN) & mask;
85 u32 bcma_chipco_gpio_out(struct bcma_drv_cc *cc, u32 mask, u32 value)
87 return bcma_cc_write32_masked(cc, BCMA_CC_GPIOOUT, mask, value);
90 u32 bcma_chipco_gpio_outen(struct bcma_drv_cc *cc, u32 mask, u32 value)
92 return bcma_cc_write32_masked(cc, BCMA_CC_GPIOOUTEN, mask, value);
95 u32 bcma_chipco_gpio_control(struct bcma_drv_cc *cc, u32 mask, u32 value)
97 return bcma_cc_write32_masked(cc, BCMA_CC_GPIOCTL, mask, value);
99 EXPORT_SYMBOL_GPL(bcma_chipco_gpio_control);
101 u32 bcma_chipco_gpio_intmask(struct bcma_drv_cc *cc, u32 mask, u32 value)
103 return bcma_cc_write32_masked(cc, BCMA_CC_GPIOIRQ, mask, value);
106 u32 bcma_chipco_gpio_polarity(struct bcma_drv_cc *cc, u32 mask, u32 value)
108 return bcma_cc_write32_masked(cc, BCMA_CC_GPIOPOL, mask, value);
111 #ifdef CONFIG_BCMA_DRIVER_MIPS
112 void bcma_chipco_serial_init(struct bcma_drv_cc *cc)
117 unsigned int ccrev = cc->core->id.rev;
118 struct bcma_serial_port *ports = cc->serial_ports;
120 if (ccrev >= 11 && ccrev != 15) {
121 /* Fixed ALP clock */
122 baud_base = bcma_pmu_alp_clock(cc);
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);
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);
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);
140 pr_err("serial not supported on this device ccrev: 0x%x\n",
145 irq = bcma_core_mips_irq(cc->core);
147 /* Determine the registers of the UARTs */
148 cc->nr_serial_ports = (cc->capabilities & BCMA_CC_CAP_NRUART);
149 for (i = 0; i < cc->nr_serial_ports; i++) {
150 ports[i].regs = cc->core->io_addr + BCMA_CC_UART0_DATA +
153 ports[i].baud_base = baud_base;
154 ports[i].reg_shift = 0;
157 #endif /* CONFIG_BCMA_DRIVER_MIPS */