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Merge tag 'i2c-for-6.12-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux

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Pull i2c fixes from Wolfram Sang:
 "i2c-host fixes for v6.12-rc7 (from Andi):

   - Fix designware incorrect behavior when concluding a transmission

   - Fix Mule multiplexer error value evaluation"

* tag 'i2c-for-6.12-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
  i2c: designware: do not hold SCL low when I2C_DYNAMIC_TAR_UPDATE is not set
  i2c: muxes: Fix return value check in mule_i2c_mux_probe()
This commit is contained in:
Linus Torvalds
2024-11-10 14:13:05 -08:00
parent ace149e083 547aad93e0
commit d7e67a9e8c
3 changed files with 7 additions and 4 deletions
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6
drivers/i2c/busses/i2c-designware-common.c
View File

@@ -524,7 +524,7 @@ int i2c_dw_set_sda_hold(struct dw_i2c_dev *dev)
void __i2c_dw_disable(struct dw_i2c_dev *dev)
{
struct i2c_timings *t = &dev->timings;
unsigned int raw_intr_stats;
unsigned int raw_intr_stats, ic_stats;
unsigned int enable;
int timeout = 100;
bool abort_needed;
@@ -532,9 +532,11 @@ void __i2c_dw_disable(struct dw_i2c_dev *dev)
int ret;
regmap_read(dev->map, DW_IC_RAW_INTR_STAT, &raw_intr_stats);
regmap_read(dev->map, DW_IC_STATUS, &ic_stats);
regmap_read(dev->map, DW_IC_ENABLE, &enable);
abort_needed = raw_intr_stats & DW_IC_INTR_MST_ON_HOLD;
abort_needed = (raw_intr_stats & DW_IC_INTR_MST_ON_HOLD) ||
(ic_stats & DW_IC_STATUS_MASTER_HOLD_TX_FIFO_EMPTY);
if (abort_needed) {
if (!(enable & DW_IC_ENABLE_ENABLE)) {
regmap_write(dev->map, DW_IC_ENABLE, DW_IC_ENABLE_ENABLE);

1
drivers/i2c/busses/i2c-designware-core.h
View File

@@ -116,6 +116,7 @@
#define DW_IC_STATUS_RFNE BIT(3)
#define DW_IC_STATUS_MASTER_ACTIVITY BIT(5)
#define DW_IC_STATUS_SLAVE_ACTIVITY BIT(6)
#define DW_IC_STATUS_MASTER_HOLD_TX_FIFO_EMPTY BIT(7)
#define DW_IC_SDA_HOLD_RX_SHIFT 16
#define DW_IC_SDA_HOLD_RX_MASK GENMASK(23, 16)

4
drivers/i2c/muxes/i2c-mux-mule.c
View File

@@ -66,8 +66,8 @@ static int mule_i2c_mux_probe(struct platform_device *pdev)
priv = i2c_mux_priv(muxc);
priv->regmap = dev_get_regmap(mux_dev->parent, NULL);
if (IS_ERR(priv->regmap))
return dev_err_probe(mux_dev, PTR_ERR(priv->regmap),
if (!priv->regmap)
return dev_err_probe(mux_dev, -ENODEV,
"No parent i2c register map\n");
platform_set_drvdata(pdev, muxc);