drivers/bcma/driver_chipcommon_pflash.c

   1 /*
   2  * Broadcom specific AMBA
   3  * ChipCommon parallel flash
   4  *
   5  * Licensed under the GNU/GPL. See COPYING for details.
   6  */
   7
   8 #include "bcma_private.h"
   9
  10 #include <linux/bcma/bcma.h>
  11 #include <linux/mtd/physmap.h>
  12 #include <linux/platform_device.h>
  13
  14 static const char * const part_probes[] = { "bcm47xxpart", NULL };
  15
  16 static struct physmap_flash_data bcma_pflash_data = {
  17         .part_probe_types       = part_probes,
  18 };
  19
  20 static struct resource bcma_pflash_resource = {
  21         .name   = "bcma_pflash",
  22         .flags  = IORESOURCE_MEM,
  23 };
  24
  25 struct platform_device bcma_pflash_dev = {
  26         .name           = "physmap-flash",
  27         .dev            = {
  28                 .platform_data  = &bcma_pflash_data,
  29         },
  30         .resource       = &bcma_pflash_resource,
  31         .num_resources  = 1,
  32 };
  33
  34 int bcma_pflash_init(struct bcma_drv_cc *cc)
  35 {
  36         struct bcma_pflash *pflash = &cc->pflash;
  37
  38         pflash->present = true;
  39
  40         if (!(bcma_read32(cc->core, BCMA_CC_FLASH_CFG) & BCMA_CC_FLASH_CFG_DS))
  41                 bcma_pflash_data.width = 1;
  42         else
  43                 bcma_pflash_data.width = 2;
  44
  45         bcma_pflash_resource.start = BCMA_SOC_FLASH2;
  46         bcma_pflash_resource.end = BCMA_SOC_FLASH2 + BCMA_SOC_FLASH2_SZ;
  47
  48         return 0;
  49 }