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/*
* Copyright (C) 2019 Zodiac Inflight Innovation
*
* 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.
*/
#ifndef __ZII_PN_FIXUP__
#define __ZII_PN_FIXUP__
struct zii_pn_fixup {
const char *pn;
void (*callback) (const struct zii_pn_fixup *fixup);
};
char *zii_read_part_number(const char *, size_t);
/**
* __zii_process_fixups - Process array of ZII part number based fixups
*
* @__fixups: Array of part number base fixups
* @__cell_name: Name of the NVMEM cell containing the part number
* @__cell_size: Size of the NVMEM cell containing the part number
*
* NOTE: Keeping this code as a marcro allows us to avoid restricting
* the type of __fixups to an array of struct zii_pn_fixup. This is
* really convenient becuase it allows us to do things like
*
* struct zii_foo_fixup {
* struct zii_pn_fixup parent;
* type1 custom_field_1
* type2 custom_field_2
* ...
* };
*
* ...
*
* const struct zii_foo_fixup foo_fixups[] = {
* { fixup1 },
* { fixup2 },
* { fixup3 },
* };
*
* ...
*
* __zii_process_fixups(foo_fixups, "blah", BLAH_LENGTH);
*
* which allows us to have the most compact definition of array of
* fixups
*/
#define __zii_process_fixups(__fixups, __cell_name, __cell_size) \
do { \
char *__pn = zii_read_part_number(__cell_name, \
__cell_size); \
const struct zii_pn_fixup *__fixup; \
unsigned int __i; \
bool __match_found = false; \
\
if (WARN_ON(IS_ERR(__pn))) \
break; \
\
for (__i = 0; __i < ARRAY_SIZE(__fixups); __i++) { \
__fixup = \
(const struct zii_pn_fixup *) &__fixups[__i]; \
\
if (strstr(__pn, __fixup->pn)) { \
pr_debug("%s->%pS\n", __func__, \
__fixup->callback); \
__match_found = true; \
__fixup->callback(__fixup); \
} \
} \
if (!__match_found) \
pr_err("No config fixups found for P/N %s!\n", __pn); \
free(__pn); \
} while (0)
#define DDS_PART_NUMBER_SIZE 15
#define LRU_PART_NUMBER_SIZE 15
#define zii_process_dds_fixups(_fixups) \
__zii_process_fixups(_fixups, "dds-part-number", DDS_PART_NUMBER_SIZE)
#define zii_process_lru_fixups(_fixups) \
__zii_process_fixups(_fixups, "lru-part-number", LRU_PART_NUMBER_SIZE)
#endif /* __ZII_PN_FIXUP__ */
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