// SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
/*
* CCS static data binary parser library
*
* Copyright 2019--2020 Intel Corporation
*/
#include <linux/device.h>
#include <linux/errno.h>
#include <linux/limits.h>
#include <linux/mm.h>
#include <linux/slab.h>
#include "ccs-data-defs.h"
struct bin_container {
void *base;
void *now;
void *end;
size_t size;
};
static void *bin_alloc(struct bin_container *bin, size_t len)
{
void *ptr;
len = ALIGN(len, 8);
if (bin->end - bin->now < len)
return NULL;
ptr = bin->now;
bin->now += len;
return ptr;
}
static void bin_reserve(struct bin_container *bin, size_t len)
{
bin->size += ALIGN(len, 8);
}
static int bin_backing_alloc(struct bin_container *bin)
{
bin->base = bin->now = kvzalloc(bin->size, GFP_KERNEL);
if (!bin->base)
return -ENOMEM;
bin->end = bin->base + bin->size;
return 0;
}
#define is_contained(var, endp) \
(sizeof(*var) <= (endp) - (void *)(var))
#define has_headroom(ptr, headroom, endp) \
((headroom) <= (endp) - (void *)(ptr))
#define is_contained_with_headroom(var, headroom, endp) \
(sizeof(*var) + (headroom) <= (endp) - (void *)(var))
static int
ccs_data_parse_length_specifier(const struct __ccs_data_length_specifier *__len,
size_t *__hlen, size_t *__plen,
const void *endp)
{
size_t hlen, plen;
if (!is_contained(__len, endp))
return -ENODATA;
switch (__len->length >> CCS_DATA_LENGTH_SPECIFIER_SIZE_SHIFT) {
case CCS_DATA_LENGTH_SPECIFIER_1:
hlen = sizeof(*__len);
plen = __len->length &
((1 << CCS_DATA_LENGTH_SPECIFIER_SIZE_SHIFT) - 1);
break;
case CCS_DATA_LENGTH_SPECIFIER_2: {
struct __ccs_data_length_specifier2 *__len2 = (void *)__len;
if (!is_contained(__len2, endp))
return -ENODATA;
hlen = sizeof(*__len2);
plen = ((size_t)
(__len2->length[0] &
((1 << CCS_DATA_LENGTH_SPECIFIER_SIZE_SHIFT) - 1))
<< 8) + __len2->length[1];
break;
}
case CCS_DATA_LENGTH_SPECIFIER_3: {
struct __ccs_data_length_specifier3 *__len3 = (void *)__len;
if (!is_contained(__len3, endp))
return -ENODATA;
hlen = sizeof(*__len3);
plen = ((size_t)
(__len3->length[0] &
((1 << CCS_DATA_LENGTH_SPECIFIER_SIZE_SHIFT) - 1))
<< 16) + (__len3->length[0] << 8) + __len3->length[1];
break;
}
default:
return -EINVAL;
}
if (!has_headroom(__len, hlen + plen, endp))
return -ENODATA;
*__hlen = hlen;
*__plen = plen;
return 0;
}
static u8
ccs_data_parse_format_version(const struct __ccs_data_block *block)
{
return block->id >> CCS_DATA_BLOCK_HEADER_ID_VERSION_SHIFT;
}
static u8 ccs_data_parse_block_id(const struct __ccs_data_block *block,
bool is_first)
{
if (!is_first)
return block->id;
return block->id & ((1 << CCS_DATA_BLOCK_HEADER_ID_VERSION_SHIFT) - 1);
}
static int ccs_data_parse_version(struct bin_container *bin,
struct ccs_data_container *ccsdata,
const void *payload, const void *endp)
{
const struct __ccs_data_block_version *v = payload;
struct ccs_data_block_version *vv;
if (v + 1 != endp)
return -ENODATA;
if (!bin->base) {
bin_reserve(bin, sizeof(*ccsdata->version));
return 0;
}
ccsdata->version = bin_alloc(bin, sizeof(*ccsdata->version));
if (!ccsdata->version)
return -ENOMEM;
vv = ccsdata->version;
vv->version_major = ((u16)v->static_data_version_major[0] << 8) +
v->static_data_version_major[1];
vv->version_minor = ((u16)v->static_data_version_minor[0] << 8) +
v->static_data_version_minor[1];
vv->date_year = ((u16)v->year[0] << 8) + v->year[1];
vv->date_month = v->month;
vv->date_day = v->day;
return 0;
}
static void print_ccs_data_version(struct device *dev,
struct ccs_data_block_version *v)
{
dev_dbg(dev,
"static data version %4.4x.%4.4x, date %4.4u-%2.2u-%2.2u\n",
v->version_major, v->version_minor,
v->date_year, v->date_month, v->date_day);
}
static int ccs_data_block_parse_header(const struct __ccs_data_block *block,
bool is_first, unsigned int *__block_id,
const void **payload,
const struct __ccs_data_block **next_block,
const void *endp, struct device *dev,
bool verbose)
{
size_t plen, hlen;
u8 block_id;
int rval;
if (!is_contained(block, endp))
return -ENODATA;
rval = ccs_data_parse_length_specifier(&block->length, &hlen, &plen,
endp);
if (rval < 0)
return rval;
block_id = ccs_data_parse_block_id(block, is_first);
if (verbose)
dev_dbg(dev,
"Block ID 0x%2.2x, header length %zu, payload length %zu\n",
block_id, hlen, plen);
if (!has_headroom(&block->length, hlen + plen, endp))
return -ENODATA;
if (__block_id)
*__block_id = block_id;
if (payload)
*payload = (void *)&block->length + hlen;
if (next_block)
*next_block = (void *)&block->length + hlen + plen;
return 0;
}
static int ccs_data_parse_regs(struct bin_container *bin,
struct ccs_reg **__regs,
size_t *__num_regs, const void *payload,
const void *endp, struct device *dev)
{
struct ccs_reg *regs_base = NULL, *regs = NULL;
size_t num_regs = 0;
u16 addr = 0;
if (bin->base && __regs) {
regs = regs_base = bin_alloc(bin, sizeof(*regs) * *__num_regs);
if (!regs)
return -ENOMEM;
}
while (payload < endp && num_regs < INT_MAX) {
const struct __ccs_data_block_regs *r = payload;
size_t len;
const void *data;
if (!is_contained(r, endp))
return -ENODATA;
switch (r->reg_len >> CCS_DATA_BLOCK_REGS_SEL_SHIFT) {
case CCS_DATA_BLOCK_REGS_SEL_REGS:
addr += r->reg_len & CCS_DATA_BLOCK_REGS_ADDR_MASK;
len = ((r->reg_len & CCS_DATA_BLOCK_REGS_LEN_MASK)
>> CCS_DATA_BLOCK_REGS_LEN_SHIFT) + 1;
if (!is_contained_with_headroom(r, len, endp))
return -ENODATA;
data = r + 1;
break;
case CCS_DATA_BLOCK_REGS_SEL_REGS2: {
const struct __ccs_data_block_regs2 *r2 = payload;
if (!is_contained(r2, endp))
return -ENODATA;
addr += ((u16)(r2->reg_len &
CCS_DATA_BLOCK_REGS_2_ADDR_MASK) << 8)
+ r2->addr;
len = ((r2->reg_len & CCS_DATA_BLOCK_REGS_2_LEN_MASK)
>> CCS_DATA_BLOCK_REGS_2_LEN_SHIFT) + 1;
if (!is_contained_with_headroom(r2, len, endp))
return -ENODATA;
data = r2 + 1;
break;
}
case CCS_DATA_BLOCK_REGS_SEL_REGS3: {
const struct __ccs_data_block_regs3 *r3 = payload;
if (!is_contained(r3, endp))
return -ENODATA;
addr = ((u16)r3->addr[0] << 8) + r3->addr[1];
len = (r3->reg_len & CCS_DATA_BLOCK_REGS_3_LEN_MASK) + 1;
if (!is_contained_with_headroom(r3, len, endp))
return -ENODATA;
data = r3 + 1;
break;
}
default:
return -EINVAL;
}
num_regs++;
if (!bin->base) {
bin_reserve(bin, len);
} else if (__regs) {
if (!regs)
return -EIO;
regs->addr = addr;
regs->len = len;
regs->value = bin_alloc(bin, len);
if (!regs->value)
return -ENOMEM;
memcpy(regs->value, data, len);
regs++;
}
addr += len;
payload = data + len;
}
if (!bin->base)
bin_reserve(bin, sizeof(*regs) * num_regs);
if (__num_regs)
*__num_regs = num_regs;
if (bin->base && __regs) {
if (!regs_base)
return -EIO;
*__regs = regs_base;
}
return 0;
}
static int ccs_data_parse_reg_rules(struct bin_container *bin,
struct ccs_reg **__regs,
size_t *__num_regs,
const void *payload,
const void *endp, struct device *dev)
{
int rval;
if (!bin->base)
return ccs_data_parse_regs(bin, NULL, NULL, payload, endp, dev);
rval = ccs_data_parse_regs(bin, NULL, __num_regs, payload, endp, dev);
if (rval)
return rval;
return ccs_data_parse_regs(bin, __regs, __num_regs, payload, endp,
dev);
}
static void assign_ffd_entry(struct ccs_frame_format_desc *desc,
const struct __ccs_data_block_ffd_entry *ent)
{
desc->pixelcode = ent->pixelcode;
desc->value = ((u16)ent->value[0] << 8) + ent->value[1];
}
static int ccs_data_parse_ffd(struct bin_container *bin,
struct ccs_frame_format_descs **ffd,
const void *payload,
const void *endp, struct device *dev)
{
const struct __ccs_data_block_ffd *__ffd = payload;
const struct __ccs_data_block_ffd_entry *__entry;
unsigned int i;
if (!is_contained(__ffd, endp))
return -ENODATA;
if ((void *)__ffd + sizeof(*__ffd) +
((u32)__ffd->num_column_descs +
(u32)__ffd->num_row_descs) *
sizeof(struct __ccs_data_block_ffd_entry) != endp)
return -ENODATA;
if (!bin->base) {
bin_reserve(bin, sizeof(**ffd));
bin_reserve(bin, __ffd->num_column_descs *
sizeof(struct ccs_frame_format_desc));
bin_reserve(bin, __ffd->num_row_descs *
sizeof(struct ccs_frame_format_desc));
return 0;
}
*ffd = bin_alloc(bin, sizeof(**ffd));
if (!*ffd)
return -ENOMEM;
(*ffd)->num_column_descs = __ffd->num_column_descs;
(*ffd)->num_row_descs = __ffd->num_row_descs;
__entry = (void *)(__ffd + 1);
(*ffd)->column_descs = bin_alloc(bin, __ffd->num_column_descs *
sizeof(*(*ffd)->column_descs));
if (!(*ffd)->column_descs)
return -ENOMEM;
for (i = 0; i < __ffd->num_column_descs; i++, __entry++)
assign_ffd_entry(&(*ffd)->column_descs[i], __entry);
(*ffd)->row_descs = bin_alloc(bin, __ffd->num_row_descs *
sizeof(*(*ffd)->row_descs));
if (!(*ffd)->row_descs)
return -ENOMEM;
for (i = 0; i < __ffd->num_row_descs; i++, __entry++)
assign_ffd_entry(&(*ffd)->row_descs[i], __entry);
if (__entry != endp)
return -EPROTO;
return 0;
}
static int ccs_data_parse_pdaf_readout(struct bin_container *bin,
struct ccs_pdaf_readout **pdaf_readout,
const void *payload,
const void *endp, struct device *dev)
{
const struct __ccs_data_block_pdaf_readout *__pdaf = payload;
if (!is_contained(__pdaf, endp))
return -ENODATA;
if (!bin->base) {
bin_reserve(bin, sizeof(**pdaf_readout));
} else {
*pdaf_readout = bin_alloc(bin, sizeof(**pdaf_readout));
if (!*pdaf_readout)
return -ENOMEM;
(*pdaf_readout)->pdaf_readout_info_order =
__pdaf->pdaf_readout_info_order;
}
return ccs_data_parse_ffd(bin, !bin->base ? NULL : &(*pdaf_readout)->ffd,
__pdaf + 1, endp, dev);
}
static int ccs_data_parse_rules(struct bin_container *bin,
struct ccs_rule **__rules,
size_t *__num_rules, const void *payload,
const void *endp, struct device *dev)
{
struct ccs_rule *rules_base = NULL, *rules = NULL, *next_rule = NULL;
size_t num_rules = 0;
const void *__next_rule = payload;
int rval;
if (bin->base) {
rules_base = next_rule =
bin_alloc(bin, sizeof(*rules) * *__num_rules);
if (!rules_base)
return -ENOMEM;
}
while (__next_rule < endp) {
size_t rule_hlen, rule_plen, rule_plen2;
const u8 *__rule_type;
const void *rule_payload;
/* Size of a single rule */
rval = ccs_data_parse_length_specifier(__next_rule, &rule_hlen,
&rule_plen, endp);
if (rval < 0)
return rval;
__rule_type = __next_rule + rule_hlen;
if (!is_contained(__rule_type, endp))
return -ENODATA;
rule_payload = __rule_type + 1;
rule_plen2 = rule_plen - sizeof(*__rule_type);
if (*__rule_type == CCS_DATA_BLOCK_RULE_ID_IF) {
const struct __ccs_data_block_rule_if *__if_rules =
rule_payload;
const size_t __num_if_rules =
rule_plen2 / sizeof(*__if_rules);
struct ccs_if_rule *if_rule;
if (!has_headroom(__if_rules,
sizeof(*__if_rules) * __num_if_rules,
rule_payload + rule_plen2))
return -ENODATA;
/* Also check there is no extra data */
if (__if_rules + __num_if_rules !=
rule_payload + rule_plen2)
return -EINVAL;
if (!bin->base) {
bin_reserve(bin,
sizeof(*if_rule) *
__num_if_rules);
num_rules++;
} else {
unsigned int i;
if (!next_rule)
return -EIO;
rules = next_rule;
next_rule++;
if_rule = bin_alloc(bin,
sizeof(*if_rule) *
__num_if_rules);
if (!if_rule)
return -ENOMEM;
for (i = 0; i < __num_if_rules; i++) {
if_rule[i].addr =
((u16)__if_rules[i].addr[0]
<< 8) +
__if_rules[i].addr[1];
if_rule[i].value = __if_rules[i].value;
if_rule[i].mask = __if_rules[i].mask;
}
rules->if_rules = if_rule;
rules->num_if_rules = __num_if_rules;
}
} else {
/* Check there was an if rule before any other rules */
if (bin->base && !rules)
return -EINVAL;
switch (*__rule_type) {
case CCS_DATA_BLOCK_RULE_ID_READ_ONLY_REGS:
rval = ccs_data_parse_reg_rules(bin,
rules ?
&rules->read_only_regs : NULL,
rules ?
&rules->num_read_only_regs : NULL,
rule_payload,
rule_payload + rule_plen2,
dev);
if (rval)
return rval;
break;
case CCS_DATA_BLOCK_RULE_ID_FFD:
rval = ccs_data_parse_ffd(bin, rules ?
&rules->frame_format : NULL,
rule_payload,
rule_payload + rule_plen2,
dev);
if (rval)
return rval;
break;
case CCS_DATA_BLOCK_RULE_ID_MSR:
rval = ccs_data_parse_reg_rules(bin,
rules ?
&rules->manufacturer_regs : NULL,
rules ?
&rules->num_manufacturer_regs : NULL,
rule_payload,
rule_payload + rule_plen2,
dev);
if (rval)
return rval;
break;
case CCS_DATA_BLOCK_RULE_ID_PDAF_READOUT:
rval = ccs_data_parse_pdaf_readout(bin,
rules ?
&rules->pdaf_readout : NULL,
rule_payload,
rule_payload + rule_plen2,
dev);
if (rval)
return rval;
break;
default:
dev_dbg(dev,
"Don't know how to handle rule type %u!\n",
*__rule_type);
return -EINVAL;
}
}
__next_rule = __next_rule + rule_hlen + rule_plen;
}
if (!bin->base) {
bin_reserve(bin, sizeof(*rules) * num_rules);
*__num_rules = num_rules;
} else {
if (!rules_base)
return -EIO;
*__rules = rules_base;
}
return 0;
}
static int ccs_data_parse_pdaf(struct bin_container *bin, struct ccs_pdaf_pix_loc **pdaf,
const void *payload, const void *endp,
struct device *dev)
{
const struct __ccs_data_block_pdaf_pix_loc *__pdaf = payload;
const struct __ccs_data_block_pdaf_pix_loc_block_desc_group *__bdesc_group;
const struct __ccs_data_block_pdaf_pix_loc_pixel_desc *__pixel_desc;
unsigned int i;
u16 num_block_desc_groups;
u8 max_block_type_id = 0;
const u8 *__num_pixel_descs;
if (!is_contained(__pdaf, endp))
return -ENODATA;
if (bin->base) {
*pdaf = bin_alloc(bin, sizeof(**pdaf));
if (!*pdaf)
return -ENOMEM;
} else {
bin_reserve(bin, sizeof(**pdaf));
}
num_block_desc_groups =
((u16)__pdaf->num_block_desc_groups[0] << 8) +
__pdaf->num_block_desc_groups[1];
if (bin->base) {
(*pdaf)->main_offset_x =
((u16)__pdaf->main_offset_x[0] << 8) +
__pdaf->main_offset_x[1];
(*pdaf)->main_offset_y =
((u16)__pdaf->main_offset_y[0] << 8) +
__pdaf->main_offset_y[1];
(*pdaf)->global_pdaf_type = __pdaf->global_pdaf_type;
(*pdaf)->block_width = __pdaf->block_width;
(*pdaf)->block_height = __pdaf->block_height;
(*pdaf)->num_block_desc_groups = num_block_desc_groups;
}
__bdesc_group = (const void *)(__pdaf + 1);
if (bin->base) {
(*pdaf)->block_desc_groups =
bin_alloc(bin,
sizeof(struct ccs_pdaf_pix_loc_block_desc_group) *
num_block_desc_groups);
if (!(*pdaf)->block_desc_groups)
return -ENOMEM;
} else {
bin_reserve(bin, sizeof(struct ccs_pdaf_pix_loc_block_desc_group) *
num_block_desc_groups);
}
for (i = 0; i < num_block_desc_groups; i++) {
const struct __ccs_data_block_pdaf_pix_loc_block_desc *__bdesc;
u16 num_block_descs;
unsigned int j;
if (!is_contained(__bdesc_group, endp))
return -ENODATA;
num_block_descs =
((u16)__bdesc_group->num_block_descs[0] << 8) +
__bdesc_group->num_block_descs[1];
if (bin->base) {
(*pdaf)->block_desc_groups[i].repeat_y =
__bdesc_group->repeat_y;
(*pdaf)->block_desc_groups[i].num_block_descs =
num_block_descs;
}
__bdesc = (const void *)(__bdesc_group + 1);
if (bin->base) {
(*pdaf)->block_desc_groups[i].block_descs =
bin_alloc(bin,
sizeof(struct ccs_pdaf_pix_loc_block_desc) *
num_block_descs);
if (!(*pdaf)->block_desc_groups[i].block_descs)
return -ENOMEM;
} else {
bin_reserve(bin, sizeof(struct ccs_pdaf_pix_loc_block_desc) *
num_block_descs);
}
for (j = 0; j < num_block_descs; j++, __bdesc++) {
struct ccs_pdaf_pix_loc_block_desc *bdesc;
if (!is_contained(__bdesc, endp))
return -ENODATA;
if (max_block_type_id <= __bdesc->block_type_id)
max_block_type_id = __bdesc->block_type_id + 1;
if (!bin->base)
continue;
bdesc = &(*pdaf)->block_desc_groups[i].block_descs[j];
bdesc->repeat_x = ((u16)__bdesc->repeat_x[0] << 8)
+ __bdesc->repeat_x[1];
if (__bdesc->block_type_id >= num_block_descs)
return -EINVAL;
bdesc->block_type_id = __bdesc->block_type_id;
}
__bdesc_group = (const void *)__bdesc;
}
__num_pixel_descs = (const void *)__bdesc_group;
if (bin->base) {
(*pdaf)->pixel_desc_groups =
bin_alloc(bin,
sizeof(struct ccs_pdaf_pix_loc_pixel_desc_group) *
max_block_type_id);
if (!(*pdaf)->pixel_desc_groups)
return -ENOMEM;
(*pdaf)->num_pixel_desc_grups = max_block_type_id;
} else {
bin_reserve(bin, sizeof(struct ccs_pdaf_pix_loc_pixel_desc_group) *
max_block_type_id);
}
for (i = 0; i < max_block_type_id; i++) {
struct ccs_pdaf_pix_loc_pixel_desc_group *pdgroup = NULL;
unsigned int j;
if (!is_contained(__num_pixel_descs, endp))
return -ENODATA;
if (bin->base) {
pdgroup = &(*pdaf)->pixel_desc_groups[i];
pdgroup->descs =
bin_alloc(bin,
sizeof(struct ccs_pdaf_pix_loc_pixel_desc) *
*__num_pixel_descs);
if (!pdgroup->descs)
return -ENOMEM;
pdgroup->num_descs = *__num_pixel_descs;
} else {
bin_reserve(bin, sizeof(struct ccs_pdaf_pix_loc_pixel_desc) *
*__num_pixel_descs);
}
__pixel_desc = (const void *)(__num_pixel_descs + 1);
for (j = 0; j < *__num_pixel_descs; j++, __pixel_desc++) {
struct ccs_pdaf_pix_loc_pixel_desc *pdesc;
if (!is_contained(__pixel_desc, endp))
return -ENODATA;
if (!bin->base)
continue;
if (!pdgroup)
return -EIO;
pdesc = &pdgroup->descs[j];
pdesc->pixel_type = __pixel_desc->pixel_type;
pdesc->small_offset_x = __pixel_desc->small_offset_x;
pdesc->small_offset_y = __pixel_desc->small_offset_y;
}
__num_pixel_descs = (const void *)(__pixel_desc + 1);
}
return 0;
}
static int ccs_data_parse_license(struct bin_container *bin,
char **__license,
size_t *__license_length,
const void *payload, const void *endp)
{
size_t size = endp - payload;
char *license;
if (!bin->base) {
bin_reserve(bin, size);
return 0;
}
license = bin_alloc(bin, size);
if (!license)
return -ENOMEM;
memcpy(license, payload, size);
*__license = license;
*__license_length = size;
return 0;
}
static int ccs_data_parse_end(bool *end, const void *payload, const void *endp,
struct device *dev)
{
const struct __ccs_data_block_end *__end = payload;
if (__end + 1 != endp) {
dev_dbg(dev, "Invalid end block length %u\n",
(unsigned int)(endp - payload));
return -ENODATA;
}
*end = true;
return 0;
}
static int __ccs_data_parse(struct bin_container *bin,
struct ccs_data_container *ccsdata,
const void *data, size_t len, struct device *dev,
bool verbose)
{
const struct __ccs_data_block *block = data;
const struct __ccs_data_block *endp = data + len;
unsigned int version;
bool is_first = true;
int rval;
version = ccs_data_parse_format_version(block);
if (version != CCS_STATIC_DATA_VERSION) {
dev_dbg(dev, "Don't know how to handle version %u\n", version);
return -EINVAL;
}
if (verbose)
dev_dbg(dev, "Parsing CCS static data version %u\n", version);
if (!bin->base)
*ccsdata = (struct ccs_data_container){ 0 };
while (block < endp) {
const struct __ccs_data_block *next_block;
unsigned int block_id;
const void *payload;
rval = ccs_data_block_parse_header(block, is_first, &block_id,
&payload, &next_block, endp,
dev,
bin->base ? false : verbose);
if (rval < 0)
return rval;
switch (block_id) {
case CCS_DATA_BLOCK_ID_DUMMY:
break;
case CCS_DATA_BLOCK_ID_DATA_VERSION:
rval = ccs_data_parse_version(bin, ccsdata, payload,
next_block);
if (rval < 0)
return rval;
break;
case CCS_DATA_BLOCK_ID_SENSOR_READ_ONLY_REGS:
rval = ccs_data_parse_regs(
bin, &ccsdata->sensor_read_only_regs,
&ccsdata->num_sensor_read_only_regs, payload,
next_block, dev);
if (rval < 0)
return rval;
break;
case CCS_DATA_BLOCK_ID_SENSOR_MANUFACTURER_REGS:
rval = ccs_data_parse_regs(
bin, &ccsdata->sensor_manufacturer_regs,
&ccsdata->num_sensor_manufacturer_regs, payload,
next_block, dev);
if (rval < 0)
return rval;
break;
case CCS_DATA_BLOCK_ID_MODULE_READ_ONLY_REGS:
rval = ccs_data_parse_regs(
bin, &ccsdata->module_read_only_regs,
&ccsdata->num_module_read_only_regs, payload,
next_block, dev);
if (rval < 0)
return rval;
break;
case CCS_DATA_BLOCK_ID_MODULE_MANUFACTURER_REGS:
rval = ccs_data_parse_regs(
bin, &ccsdata->module_manufacturer_regs,
&ccsdata->num_module_manufacturer_regs, payload,
next_block, dev);
if (rval < 0)
return rval;
break;
case CCS_DATA_BLOCK_ID_SENSOR_PDAF_PIXEL_LOCATION:
rval = ccs_data_parse_pdaf(bin, &ccsdata->sensor_pdaf,
payload, next_block, dev);
if (rval < 0)
return rval;
break;
case CCS_DATA_BLOCK_ID_MODULE_PDAF_PIXEL_LOCATION:
rval = ccs_data_parse_pdaf(bin, &ccsdata->module_pdaf,
payload, next_block, dev);
if (rval < 0)
return rval;
break;
case CCS_DATA_BLOCK_ID_SENSOR_RULE_BASED_BLOCK:
rval = ccs_data_parse_rules(
bin, &ccsdata->sensor_rules,
&ccsdata->num_sensor_rules, payload, next_block,
dev);
if (rval < 0)
return rval;
break;
case CCS_DATA_BLOCK_ID_MODULE_RULE_BASED_BLOCK:
rval = ccs_data_parse_rules(
bin, &ccsdata->module_rules,
&ccsdata->num_module_rules, payload, next_block,
dev);
if (rval < 0)
return rval;
break;
case CCS_DATA_BLOCK_ID_LICENSE:
rval = ccs_data_parse_license(bin, &ccsdata->license,
&ccsdata->license_length,
payload, next_block);
if (rval < 0)
return rval;
break;
case CCS_DATA_BLOCK_ID_END:
rval = ccs_data_parse_end(&ccsdata->end, payload,
next_block, dev);
if (rval < 0)
return rval;
break;
default:
dev_dbg(dev, "WARNING: not handling block ID 0x%2.2x\n",
block_id);
}
block = next_block;
is_first = false;
}
return 0;
}
/**
* ccs_data_parse - Parse a CCS static data file into a usable in-memory
* data structure
* @ccsdata: CCS static data in-memory data structure
* @data: CCS static data binary
* @len: Length of @data
* @dev: Device the data is related to (used for printing debug messages)
* @verbose: Whether to be verbose or not
*/
int ccs_data_parse(struct ccs_data_container *ccsdata, const void *data,
size_t len, struct device *dev, bool verbose)
{
struct bin_container bin = { 0 };
int rval;
rval = __ccs_data_parse(&bin, ccsdata, data, len, dev, verbose);
if (rval)
return rval;
rval = bin_backing_alloc(&bin);
if (rval)
return rval;
rval = __ccs_data_parse(&bin, ccsdata, data, len, dev, false);
if (rval)
goto out_free;
if (verbose && ccsdata->version)
print_ccs_data_version(dev, ccsdata->version);
if (bin.now != bin.end) {
rval = -EPROTO;
dev_dbg(dev, "parsing mismatch; base %p; now %p; end %p\n",
bin.base, bin.now, bin.end);
goto out_free;
}
ccsdata->backing = bin.base;
return 0;
out_free:
kvfree(bin.base);
return rval;
}
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