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add flash/nor/core.[ch]

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The newly moved flash TCL routines access the internals of the module
too much.  Fix the layering issues by adding new core NOR flash APIs:

<flash/nor/core.h>:
  - flash_driver_find_by_name() - self-descriptive

<flash/nor/imp.h>:
  - flash_bank_add()            - encapsulates adding banks to bank list
  - flash_bank_list()           - encapsulates retreiving bank list

This allows the externs in flash/nor/imp.h to be removed, and
these mechanisms may now be re-used by other flash module code.
This commit is contained in:
Zachary T Welch
2009-12-03 17:14:07 -08:00
parent 3cb0b56005
commit c65d94f7d0
5 changed files with 154 additions and 67 deletions
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65
src/flash/nor/core.c Normal file
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@@ -0,0 +1,65 @@
/***************************************************************************
* Copyright (C) 2009 Zachary T Welch <zw@superlucidity.net> *
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
* This program is distributed in the hope that it will be useful, *
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
* GNU General Public License for more details. *
* *
* You should have received a copy of the GNU General Public License *
* along with this program; if not, write to the *
* Free Software Foundation, Inc., *
* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
***************************************************************************/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <flash/flash.h>
#include <flash/nor/imp.h>
// in flash.c, to be moved here
extern struct flash_driver *flash_drivers[];
extern struct flash_bank *flash_banks;
struct flash_driver *flash_driver_find_by_name(const char *name)
{
for (unsigned i = 0; flash_drivers[i]; i++)
{
if (strcmp(name, flash_drivers[i]->name) == 0)
return flash_drivers[i];
}
return NULL;
}
void flash_bank_add(struct flash_bank *bank)
{
/* put flash bank in linked list */
unsigned bank_num = 0;
if (flash_banks)
{
/* find last flash bank */
struct flash_bank *p = flash_banks;
while (NULL != p->next)
{
bank_num += 1;
p = p->next;
}
p->next = bank;
bank_num += 1;
}
else
flash_banks = bank;
bank->bank_number = bank_num;
}
struct flash_bank *flash_bank_list(void)
{
return flash_banks;
}