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d678a59d2d
When bringing in the series 'arm: dts: am62-beagleplay: Fix Beagleplay Ethernet"' I failed to notice that b4 noticed it was based on next and so took that as the base commit and merged that part of next to master. This reverts commitc8ffd1356d, reversing changes made to2ee6f3a5f7. Reported-by: Jonas Karlman <jonas@kwiboo.se> Signed-off-by: Tom Rini <trini@konsulko.com>
124 lines
3.3 KiB
C
124 lines
3.3 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* (C) Copyright 2009-2016 CompuLab, Ltd.
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*
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* Authors: Nikita Kiryanov <nikita@compulab.co.il>
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* Igor Grinberg <grinberg@compulab.co.il>
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*/
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#include <common.h>
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#include <linux/kernel.h>
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#include <eeprom_layout.h>
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#include <eeprom_field.h>
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#define NO_LAYOUT_FIELDS "Unknown layout. Dumping raw data\n"
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struct eeprom_field layout_unknown[1] = {
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{ NO_LAYOUT_FIELDS, 256, NULL, eeprom_field_print_bin,
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eeprom_field_update_bin },
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};
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/*
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* eeprom_layout_detect() - detect layout based on the contents of the data.
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* @data: Pointer to the data to be analyzed.
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*
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* Returns: the detected layout version.
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*/
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__weak int eeprom_layout_detect(unsigned char *data)
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{
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return LAYOUT_VERSION_UNRECOGNIZED;
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}
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/*
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* __eeprom_layout_assign() - set the layout fields
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* @layout: A pointer to an existing struct layout.
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* @layout_version: The version number of the desired layout
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*/
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__weak void __eeprom_layout_assign(struct eeprom_layout *layout,
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int layout_version)
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{
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layout->fields = layout_unknown;
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layout->num_of_fields = ARRAY_SIZE(layout_unknown);
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}
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void eeprom_layout_assign(struct eeprom_layout *layout, int layout_version) \
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__attribute__((weak, alias("__eeprom_layout_assign")));
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/*
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* eeprom_layout_print() - print the layout and the data which is assigned to it
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* @layout: A pointer to an existing struct layout.
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*/
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static void eeprom_layout_print(const struct eeprom_layout *layout)
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{
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int i;
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struct eeprom_field *fields = layout->fields;
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for (i = 0; i < layout->num_of_fields; i++)
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fields[i].print(&fields[i]);
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}
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/*
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* eeprom_layout_update_field() - update a single field in the layout data.
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* @layout: A pointer to an existing struct layout.
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* @field_name: The name of the field to update.
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* @new_data: The new field data (a string. Format depends on the field)
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*
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* Returns: 0 on success, negative error value on failure.
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*/
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static int eeprom_layout_update_field(struct eeprom_layout *layout,
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char *field_name, char *new_data)
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{
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int i, err;
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struct eeprom_field *fields = layout->fields;
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if (new_data == NULL)
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return 0;
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if (field_name == NULL)
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return -1;
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for (i = 0; i < layout->num_of_fields; i++) {
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if (fields[i].name == RESERVED_FIELDS ||
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strcmp(fields[i].name, field_name))
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continue;
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err = fields[i].update(&fields[i], new_data);
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if (err)
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printf("Invalid data for field %s\n", field_name);
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return err;
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}
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printf("No such field '%s'\n", field_name);
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return -1;
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}
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/*
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* eeprom_layout_setup() - setup layout struct with the layout data and
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* metadata as dictated by layout_version
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* @layout: A pointer to an existing struct layout.
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* @buf: A buffer initialized with the eeprom data.
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* @buf_size: Size of buf in bytes.
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* @layout version: The version number of the layout.
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*/
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void eeprom_layout_setup(struct eeprom_layout *layout, unsigned char *buf,
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unsigned int buf_size, int layout_version)
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{
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int i;
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if (layout_version == LAYOUT_VERSION_AUTODETECT)
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layout->layout_version = eeprom_layout_detect(buf);
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else
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layout->layout_version = layout_version;
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eeprom_layout_assign(layout, layout_version);
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layout->data = buf;
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for (i = 0; i < layout->num_of_fields; i++) {
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layout->fields[i].buf = buf;
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buf += layout->fields[i].size;
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}
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layout->data_size = buf_size;
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layout->print = eeprom_layout_print;
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layout->update = eeprom_layout_update_field;
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}
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