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i2c: aspeed: Allow 255 byte block transfers

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255 byte transfers have been tested on an AST2500 board

Signed-off-by: Matt Johnston <matt@codeconstruct.com.au>
Reviewed-by: Brendan Higgins <brendanhiggins@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Matt Johnston 2021-11-15 10:49:23 +08:00 committed by David S. Miller
parent 84a107e68b
commit 1b2ba1f591
1 changed files with 3 additions and 2 deletions
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5
drivers/i2c/busses/i2c-aspeed.c
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@ -533,7 +533,7 @@ static u32 aspeed_i2c_master_irq(struct aspeed_i2c_bus *bus, u32 irq_status)
msg->buf[bus->buf_index++] = recv_byte;
if (msg->flags & I2C_M_RECV_LEN) {
if (unlikely(recv_byte > I2C_SMBUS_BLOCK_MAX)) {
if (unlikely(recv_byte > I2C_SMBUS_V3_BLOCK_MAX)) {
bus->cmd_err = -EPROTO;
aspeed_i2c_do_stop(bus);
goto out_no_complete;
@ -718,7 +718,8 @@ static int aspeed_i2c_master_xfer(struct i2c_adapter *adap,
static u32 aspeed_i2c_functionality(struct i2c_adapter *adap)
{
return I2C_FUNC_I2C | I2C_FUNC_SMBUS_EMUL | I2C_FUNC_SMBUS_BLOCK_DATA;
return I2C_FUNC_I2C | I2C_FUNC_SMBUS_EMUL |
I2C_FUNC_SMBUS_BLOCK_DATA | I2C_FUNC_SMBUS_V3_BLOCK;
}
#if IS_ENABLED(CONFIG_I2C_SLAVE)