irq.c

   1 /*
   2  * IRQ handling: top half, bottom half (halves?) and utilities.
   3  *
   4  * This file is mainly modeled on the b43 way of doing things.
   5  *
   6  * Copyright (c) 2008, Francis Galiegue <fgaliegue@gmail.com> for the ACX100
   7  * driver project.
   8  *
   9  * This file is licensed under GPLv2.
  10  */
  11 #include <linux/irq.h>
  12
  13 #include "acx_config.h"
  14 #include "acx_log.h"
  15 #include "acx_struct.h"
  16 #include "acx_irq.h"
  17
  18 /*
  19  * TODO: implement!
  20  */
  21
  22 //static irqreturn_t acx_interrupt_handler(int irq, void *dev_id);
  23
  24 /*
  25  * acx_enable_irqs() and acx_disable_irqs():
  26  */
  27
  28 /**
  29  * acx_enable_irqs(): set the interrupt mask on the card. Should be called with
  30  * a mask saved by the acx_disable_irqs() function.
  31  * @adev: the device on which to enable the IRQs.
  32  * @mask: the mask to apply to this device.
  33  */
  34 //void acx_enable_irqs(acx_device_t *adev, u16 mask)
  35 //{
  36 //      write_reg16(adev, IO_ACX_IRQ_MASK, mask);
  37 //      write_reg16(adev, IO_ACX_FEMR, 0x0);
  38 //}
  39
  40 /**
  41  * acx_disable_irqs(): set an interrupt mask on the card, and return the mask
  42  * that was present on the card.
  43  * @adev: the device on which to disable the IRQs.
  44  * @mask: the mask to set.
  45  *
  46  * FIXME: I couldn't actually find an example of reading the current interrupt
  47  * mask, but it would make sense that you read it from the same location that
  48  * you write to...
  49  */
  50 //u16 acx_disable_irqs(acx_device_t *adev, u16 mask)
  51 //{
  52 //      u16 saved_mask = read_reg16(adev, IO_ACX_IRQ_MASK);
  53 //      write_reg16(adev, IO_ACX_IRQ_MASK, mask);
  54 //      write_reg16(adev, IO_ACX_FEMR, 0x0);
  55 //      return saved_mask;
  56 //}
  57