1 // SPDX-License-Identifier: GPL-2.0-only
3  * ntpfw.c - Firmware helper functions for Neofidelity codecs
16 	u8 step;  member
34 	buf_magic = be32_to_cpu(header->magic);  in ntpfw_verify()
48 		dev_err(dev, "Failed to load firmware: chunk size too big\n");  in ntpfw_verify_chunk()
52 	if (chunk->step != 2 && chunk->step != 5) {  in ntpfw_verify_chunk()
53 		dev_err(dev, "Failed to load firmware: invalid chunk step: %d\n", chunk->step);  in ntpfw_verify_chunk()
57 	chunk_size = be16_to_cpu(chunk->length);  in ntpfw_verify_chunk()
63 	if (chunk_size % chunk->step) {  in ntpfw_verify_chunk()
64 		dev_err(dev, "Failed to load firmware: chunk length and step mismatch\n");  in ntpfw_verify_chunk()
75 	size_t length = be16_to_cpu(chunk->length);  in ntpfw_send_chunk()
77 	for (i = 0; i < length; i += chunk->step) {  in ntpfw_send_chunk()
78 		ret = i2c_master_send(i2c, &chunk->data[i], chunk->step);  in ntpfw_send_chunk()
79 		if (ret != chunk->step) {  in ntpfw_send_chunk()
80 			dev_err(&i2c->dev, "I2C send failed: %d\n", ret);  in ntpfw_send_chunk()
81 			return ret < 0 ? ret : -EIO;  in ntpfw_send_chunk()
90 	struct device *dev = &i2c->dev;  in ntpfw_load()
104 	if (!ntpfw_verify(dev, fw->data, fw->size, magic)) {  in ntpfw_load()
105 		ret = -EINVAL;  in ntpfw_load()
109 	data = fw->data + sizeof(struct ntpfw_header);  in ntpfw_load()
110 	leftover = fw->size - sizeof(struct ntpfw_header);  in ntpfw_load()
116 			ret = -EINVAL;  in ntpfw_load()
124 		data += be16_to_cpu(chunk->length) + sizeof(*chunk);  in ntpfw_load()
125 		leftover -= be16_to_cpu(chunk->length) + sizeof(*chunk);  in ntpfw_load()