drivers/bcma/driver_chipcommon.c

   1 /*
   2  * Broadcom specific AMBA
   3  * ChipCommon core driver
   4  *
   5  * Copyright 2005, Broadcom Corporation
   6  * Copyright 2006, 2007, Michael Buesch <mb@bu3sch.de>
   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 }