drivers/crypto/ux500/cryp/cryp_irq.c

   1 /**
   2  * Copyright (C) ST-Ericsson SA 2010
   3  * Author: Shujuan Chen <shujuan.chen@stericsson.com> for ST-Ericsson.
   4  * Author: Jonas Linde <jonas.linde@stericsson.com> for ST-Ericsson.
   5  * Author: Joakim Bech <joakim.xx.bech@stericsson.com> for ST-Ericsson.
   6  * Author: Berne Hebark <berne.herbark@stericsson.com> for ST-Ericsson.
   7  * Author: Niklas Hernaeus <niklas.hernaeus@stericsson.com> for ST-Ericsson.
   8  * License terms: GNU General Public License (GPL) version 2.
   9  */
  10
  11 #include <linux/kernel.h>
  12 #include <linux/bitmap.h>
  13 #include <linux/device.h>
  14
  15 #include "cryp.h"
  16 #include "cryp_p.h"
  17 #include "cryp_irq.h"
  18 #include "cryp_irqp.h"
  19
  20 void cryp_enable_irq_src(struct cryp_device_data *device_data, u32 irq_src)
  21 {
  22         u32 i;
  23
  24         dev_dbg(device_data->dev, "[%s]", __func__);
  25
  26         i = readl_relaxed(&device_data->base->imsc);
  27         i = i | irq_src;
  28         writel_relaxed(i, &device_data->base->imsc);
  29 }
  30
  31 void cryp_disable_irq_src(struct cryp_device_data *device_data, u32 irq_src)
  32 {
  33         u32 i;
  34
  35         dev_dbg(device_data->dev, "[%s]", __func__);
  36
  37         i = readl_relaxed(&device_data->base->imsc);
  38         i = i & ~irq_src;
  39         writel_relaxed(i, &device_data->base->imsc);
  40 }
  41
  42 bool cryp_pending_irq_src(struct cryp_device_data *device_data, u32 irq_src)
  43 {
  44         return (readl_relaxed(&device_data->base->mis) & irq_src) > 0;
  45 }