LXR linux/arch/arm/mach-ux500/devices-common.c

   1/*
   2 * Copyright (C) ST-Ericsson SA 2010
   3 *
   4 * Author: Rabin Vincent <rabin.vincent@stericsson.com> for ST-Ericsson
   5 * License terms: GNU General Public License (GPL), version 2.
   6 */
   7
   8#include <linux/kernel.h>
   9#include <linux/dma-mapping.h>
  10#include <linux/err.h>
  11#include <linux/irq.h>
  12#include <linux/slab.h>
  13#include <linux/platform_device.h>
  14#include <linux/amba/bus.h>
  15
  16#include <plat/gpio-nomadik.h>
  17
  18#include <mach/hardware.h>
  19
  20#include "devices-common.h"
  21
  22struct amba_device *
  23dbx500_add_amba_device(struct device *parent, const char *name,
  24                       resource_size_t base, int irq, void *pdata,
  25                       unsigned int periphid)
  26{
  27        struct amba_device *dev;
  28        int ret;
  29
  30        dev = amba_device_alloc(name, base, SZ_4K);
  31        if (!dev)
  32                return ERR_PTR(-ENOMEM);
  33
  34        dev->dma_mask = DMA_BIT_MASK(32);
  35        dev->dev.coherent_dma_mask = DMA_BIT_MASK(32);
  36
  37        dev->irq[0] = irq;
  38
  39        dev->periphid = periphid;
  40
  41        dev->dev.platform_data = pdata;
  42
  43        dev->dev.parent = parent;
  44
  45        ret = amba_device_add(dev, &iomem_resource);
  46        if (ret) {
  47                amba_device_put(dev);
  48                return ERR_PTR(ret);
  49        }
  50
  51        return dev;
  52}
  53
  54static struct platform_device *
  55dbx500_add_gpio(struct device *parent, int id, resource_size_t addr, int irq,
  56                struct nmk_gpio_platform_data *pdata)
  57{
  58        struct resource resources[] = {
  59                {
  60                        .start  = addr,
  61                        .end    = addr + 127,
  62                        .flags  = IORESOURCE_MEM,
  63                },
  64                {
  65                        .start  = irq,
  66                        .end    = irq,
  67                        .flags  = IORESOURCE_IRQ,
  68                }
  69        };
  70
  71        return platform_device_register_resndata(
  72                parent,
  73                "gpio",
  74                id,
  75                resources,
  76                ARRAY_SIZE(resources),
  77                pdata,
  78                sizeof(*pdata));
  79}
  80
  81void dbx500_add_gpios(struct device *parent, resource_size_t *base, int num,
  82                      int irq, struct nmk_gpio_platform_data *pdata)
  83{
  84        int first = 0;
  85        int i;
  86
  87        for (i = 0; i < num; i++, first += 32, irq++) {
  88                pdata->first_gpio = first;
  89                pdata->first_irq = NOMADIK_GPIO_TO_IRQ(first);
  90                pdata->num_gpio = 32;
  91
  92                dbx500_add_gpio(parent, i, base[i], irq, pdata);
  93        }
  94}
  95