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| author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-08-07 13:17:46 +0000 |
|---|---|---|
| committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-08-07 13:17:46 +0000 |
| commit | 7f3a4257159dea8e7ef66d1a539dc6df708b8ed3 (patch) | |
| tree | bcc69b5f4609f348fac49e2f59e210b29eaea783 /drivers/crypto/atmel-i2c.c | |
| parent | Adding upstream version 6.9.12. (diff) | |
| download | linux-7f3a4257159dea8e7ef66d1a539dc6df708b8ed3.tar.xz linux-7f3a4257159dea8e7ef66d1a539dc6df708b8ed3.zip | |
Adding upstream version 6.10.3.upstream/6.10.3
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'drivers/crypto/atmel-i2c.c')
| -rw-r--r-- | drivers/crypto/atmel-i2c.c | 30 |
1 files changed, 27 insertions, 3 deletions
diff --git a/drivers/crypto/atmel-i2c.c b/drivers/crypto/atmel-i2c.c index 83a9093eff..a895e4289e 100644 --- a/drivers/crypto/atmel-i2c.c +++ b/drivers/crypto/atmel-i2c.c @@ -51,7 +51,7 @@ static void atmel_i2c_checksum(struct atmel_i2c_cmd *cmd) *__crc16 = cpu_to_le16(bitrev16(crc16(0, data, len))); } -void atmel_i2c_init_read_cmd(struct atmel_i2c_cmd *cmd) +void atmel_i2c_init_read_config_cmd(struct atmel_i2c_cmd *cmd) { cmd->word_addr = COMMAND; cmd->opcode = OPCODE_READ; @@ -68,7 +68,31 @@ void atmel_i2c_init_read_cmd(struct atmel_i2c_cmd *cmd) cmd->msecs = MAX_EXEC_TIME_READ; cmd->rxsize = READ_RSP_SIZE; } -EXPORT_SYMBOL(atmel_i2c_init_read_cmd); +EXPORT_SYMBOL(atmel_i2c_init_read_config_cmd); + +int atmel_i2c_init_read_otp_cmd(struct atmel_i2c_cmd *cmd, u16 addr) +{ + if (addr < 0 || addr > OTP_ZONE_SIZE) + return -1; + + cmd->word_addr = COMMAND; + cmd->opcode = OPCODE_READ; + /* + * Read the word from OTP zone that may contain e.g. serial + * numbers or similar if persistently pre-initialized and locked + */ + cmd->param1 = OTP_ZONE; + cmd->param2 = cpu_to_le16(addr); + cmd->count = READ_COUNT; + + atmel_i2c_checksum(cmd); + + cmd->msecs = MAX_EXEC_TIME_READ; + cmd->rxsize = READ_RSP_SIZE; + + return 0; +} +EXPORT_SYMBOL(atmel_i2c_init_read_otp_cmd); void atmel_i2c_init_random_cmd(struct atmel_i2c_cmd *cmd) { @@ -301,7 +325,7 @@ static int device_sanity_check(struct i2c_client *client) if (!cmd) return -ENOMEM; - atmel_i2c_init_read_cmd(cmd); + atmel_i2c_init_read_config_cmd(cmd); ret = atmel_i2c_send_receive(client, cmd); if (ret) |