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i2c: au1550: reword according to newest specification

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Change the wording of this driver wrt. the newest I2C v7 and SMBus 3.2
specifications and replace "master/slave" with more appropriate terms.
Remove a useless comment while here.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Reviewed-by: Andi Shyti <andi.shyti@kernel.org>
Signed-off-by: Andi Shyti <andi.shyti@kernel.org>
This commit is contained in:
Wolfram Sang 2024-07-06 13:20:04 +02:00 committed by Andi Shyti
parent d7f365fc37
commit a4c98e4ada
1 changed files with 7 additions and 8 deletions
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15
drivers/i2c/busses/i2c-au1550.c
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@ -81,11 +81,10 @@ static int wait_ack(struct i2c_au1550_data *adap)
return 0;
}
static int wait_master_done(struct i2c_au1550_data *adap)
static int wait_controller_done(struct i2c_au1550_data *adap)
{
int i;
/* Wait for Master Done. */
for (i = 0; i < 2 * adap->xfer_timeout; i++) {
if ((RD(adap, PSC_SMBEVNT) & PSC_SMBEVNT_MD) != 0)
return 0;
@ -120,12 +119,12 @@ do_address(struct i2c_au1550_data *adap, unsigned int addr, int rd, int q)
if (q)
addr |= PSC_SMBTXRX_STP;
/* Put byte into fifo, start up master. */
/* Put byte into fifo, start up controller */
WR(adap, PSC_SMBTXRX, addr);
WR(adap, PSC_SMBPCR, PSC_SMBPCR_MS);
if (wait_ack(adap))
return -EIO;
return (q) ? wait_master_done(adap) : 0;
return (q) ? wait_controller_done(adap) : 0;
}
static int wait_for_rx_byte(struct i2c_au1550_data *adap, unsigned char *out)
@ -175,7 +174,7 @@ static int i2c_read(struct i2c_au1550_data *adap, unsigned char *buf,
/* The last byte has to indicate transfer done. */
WR(adap, PSC_SMBTXRX, PSC_SMBTXRX_STP);
if (wait_master_done(adap))
if (wait_controller_done(adap))
return -EIO;
buf[i] = (unsigned char)(RD(adap, PSC_SMBTXRX) & 0xff);
@ -204,7 +203,7 @@ static int i2c_write(struct i2c_au1550_data *adap, unsigned char *buf,
data = buf[i];
data |= PSC_SMBTXRX_STP;
WR(adap, PSC_SMBTXRX, data);
if (wait_master_done(adap))
if (wait_controller_done(adap))
return -EIO;
return 0;
}
@ -246,8 +245,8 @@ static u32 au1550_func(struct i2c_adapter *adap)
}
static const struct i2c_algorithm au1550_algo = {
.master_xfer = au1550_xfer,
.functionality = au1550_func,
.xfer = au1550_xfer,
.functionality = au1550_func,
};
static void i2c_au1550_setup(struct i2c_au1550_data *priv)