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