Adding upstream version 6.1.76.upstream/6.1.76

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

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;
+}