[PATCH net-next 4/6] i2c: npcm7xx: Allow 255 byte block SMBus transfers
From: Matt Johnston <matt@codeconstruct.com.au>
Date: 2021-11-01 09:04:39
Also in:
linux-i2c
Subsystem:
arm/nuvoton npcm architecture, i2c subsystem, i2c subsystem host drivers, the rest · Maintainers:
Andrew Jeffery, Avi Fishman, Tomer Maimon, Tali Perry, Andi Shyti, Linus Torvalds
255 byte support has been tested on a npcm750 board Signed-off-by: Matt Johnston <matt@codeconstruct.com.au> --- drivers/i2c/busses/i2c-npcm7xx.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/i2c/busses/i2c-npcm7xx.c b/drivers/i2c/busses/i2c-npcm7xx.c
index 2ad166355ec9..6d60f65add85 100644
--- a/drivers/i2c/busses/i2c-npcm7xx.c
+++ b/drivers/i2c/busses/i2c-npcm7xx.c@@ -1399,7 +1399,7 @@ static void npcm_i2c_irq_master_handler_read(struct npcm_i2c *bus) if (bus->read_block_use) { /* first byte in block protocol is the size: */ data = npcm_i2c_rd_byte(bus); - data = clamp_val(data, 1, I2C_SMBUS_BLOCK_MAX); + data = clamp_val(data, 1, I2C_SMBUS_V3_BLOCK_MAX); bus->rd_size = data + block_extra_bytes_size; bus->rd_buf[bus->rd_ind++] = data;
@@ -2187,6 +2187,7 @@ static u32 npcm_i2c_functionality(struct i2c_adapter *adap) I2C_FUNC_SMBUS_EMUL | I2C_FUNC_SMBUS_BLOCK_DATA | I2C_FUNC_SMBUS_PEC | + I2C_FUNC_SMBUS_V3_BLOCK | I2C_FUNC_SLAVE; }
--
2.32.0