[PATCH 51/64] i2c: sis630: reword according to newest specification

Wolfram Sang
2024-03-22T13:27:22Z

drivers/i2c/busses/i2c-sis630.c | 16 ++++++----------
1 file changed, 6 insertions(+), 10 deletions(-)

diff --git a/drivers/i2c/busses/i2c-sis630.c b/drivers/i2c/busses/i2c-sis630.c
index 3505cf29cedd..7910ba2fce15 100644
--- a/drivers/i2c/busses/i2c-sis630.c
+++ b/drivers/i2c/busses/i2c-sis630.c
@@ -18,7 +18,7 @@
+------------------------+--------------------+-------------------+
| Clock | 14kHz/56kHz | 55.56kHz/27.78kHz |
| SMBus registers offset | 0x80 | 0xE0 |
- | SMB_CNT | Bit 1 = Slave Busy | Bit 1 = Bus probe |
+ | SMB_CNT | Bit 1 = Client Busy| Bit 1 = Bus probe |
| (not used yet) | Bit 3 is reserved | Bit 3 = Last byte |
| SMB_PCOUNT | Offset + 0x06 | Offset + 0x14 |
| SMB_COUNT | 4:0 bits | 5:0 bits |
@@ -56,8 +56,8 @@

/* SMB_CNT register */
#define MSTO_EN 0x40 /* Host Master Timeout Enable */
-#define SMBCLK_SEL 0x20 /* Host master clock selection */
-#define SMB_PROBE 0x02 /* Bus Probe/Slave busy */
+#define SMBCLK_SEL 0x20 /* Host clock selection */
+#define SMB_PROBE 0x02 /* Bus Probe/Client busy */
#define SMB_HOSTBUSY 0x01 /* Host Busy */

/* SMBHOST_CNT register */
@@ -93,7 +93,7 @@ static bool high_clock;
static bool force;
module_param(high_clock, bool, 0);
MODULE_PARM_DESC(high_clock,
- "Set Host Master Clock to 56KHz (default 14KHz) (SIS630/730 only).");
+ "Set Host Clock to 56KHz (default 14KHz) (SIS630/730 only).");
module_param(force, bool, 0);
MODULE_PARM_DESC(force, "Forcibly enable the SIS630. DANGEROUS!");

@@ -144,8 +144,7 @@ static int sis630_transaction_start(struct i2c_adapter *adap, int size,

dev_dbg(&adap->dev, "saved clock 0x%02x\n", *oldclock);

- /* disable timeout interrupt,
- * set Host Master Clock to 56KHz if requested */
+ /* disable timeout interrupt, set Host Clock to 56KHz if requested */
if (high_clock)
sis630_write(SMB_CNT, SMBCLK_SEL);
else
@@ -201,10 +200,7 @@ static void sis630_transaction_end(struct i2c_adapter *adap, u8 oldclock)
dev_dbg(&adap->dev,
"SMB_CNT before clock restore 0x%02x\n", sis630_read(SMB_CNT));

- /*
- * restore old Host Master Clock if high_clock is set
- * and oldclock was not 56KHz
- */
+ /* restore old Host Clock if high_clock is set and oldclock was not 56KHz */
if (high_clock && !(oldclock & SMBCLK_SEL))
sis630_write(SMB_CNT, sis630_read(SMB_CNT) & ~SMBCLK_SEL);

--
2.43.0