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Diffstat (limited to 'drivers/media/i2c/ccs/ccs-data.c')
-rw-r--r--drivers/media/i2c/ccs/ccs-data.c979
1 files changed, 979 insertions, 0 deletions
diff --git a/drivers/media/i2c/ccs/ccs-data.c b/drivers/media/i2c/ccs/ccs-data.c
new file mode 100644
index 000000000..08400edf7
--- /dev/null
+++ b/drivers/media/i2c/ccs/ccs-data.c
@@ -0,0 +1,979 @@
+// 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;
+}