diff options
Diffstat (limited to 'drivers/i2c/busses')
| -rw-r--r-- | drivers/i2c/busses/i2c-i801.c | 2 | ||||
| -rw-r--r-- | drivers/i2c/busses/i2c-rtl9300.c | 42 |
2 files changed, 21 insertions, 23 deletions
diff --git a/drivers/i2c/busses/i2c-i801.c b/drivers/i2c/busses/i2c-i801.c index a7f89946dad4..e94ac746a741 100644 --- a/drivers/i2c/busses/i2c-i801.c +++ b/drivers/i2c/busses/i2c-i801.c @@ -1052,7 +1052,7 @@ static const struct pci_device_id i801_ids[] = { { PCI_DEVICE_DATA(INTEL, METEOR_LAKE_P_SMBUS, FEATURES_ICH5 | FEATURE_TCO_CNL) }, { PCI_DEVICE_DATA(INTEL, METEOR_LAKE_SOC_S_SMBUS, FEATURES_ICH5 | FEATURE_TCO_CNL) }, { PCI_DEVICE_DATA(INTEL, METEOR_LAKE_PCH_S_SMBUS, FEATURES_ICH5 | FEATURE_TCO_CNL) }, - { PCI_DEVICE_DATA(INTEL, BIRCH_STREAM_SMBUS, FEATURES_ICH5 | FEATURE_TCO_CNL) }, + { PCI_DEVICE_DATA(INTEL, BIRCH_STREAM_SMBUS, FEATURES_ICH5) }, { PCI_DEVICE_DATA(INTEL, ARROW_LAKE_H_SMBUS, FEATURES_ICH5 | FEATURE_TCO_CNL) }, { PCI_DEVICE_DATA(INTEL, PANTHER_LAKE_H_SMBUS, FEATURES_ICH5 | FEATURE_TCO_CNL) }, { PCI_DEVICE_DATA(INTEL, PANTHER_LAKE_P_SMBUS, FEATURES_ICH5 | FEATURE_TCO_CNL) }, diff --git a/drivers/i2c/busses/i2c-rtl9300.c b/drivers/i2c/busses/i2c-rtl9300.c index e064e8a4a1f0..9e1f71fed0fe 100644 --- a/drivers/i2c/busses/i2c-rtl9300.c +++ b/drivers/i2c/busses/i2c-rtl9300.c @@ -99,6 +99,9 @@ static int rtl9300_i2c_config_xfer(struct rtl9300_i2c *i2c, struct rtl9300_i2c_c { u32 val, mask; + if (len < 1 || len > 16) + return -EINVAL; + val = chan->bus_freq << RTL9300_I2C_MST_CTRL2_SCL_FREQ_OFS; mask = RTL9300_I2C_MST_CTRL2_SCL_FREQ_MASK; @@ -143,10 +146,10 @@ static int rtl9300_i2c_write(struct rtl9300_i2c *i2c, u8 *buf, int len) return -EIO; for (i = 0; i < len; i++) { - if (i % 4 == 0) - vals[i/4] = 0; - vals[i/4] <<= 8; - vals[i/4] |= buf[i]; + unsigned int shift = (i % 4) * 8; + unsigned int reg = i / 4; + + vals[reg] |= buf[i] << shift; } return regmap_bulk_write(i2c->regmap, i2c->reg_base + RTL9300_I2C_MST_DATA_WORD0, @@ -175,7 +178,7 @@ static int rtl9300_i2c_execute_xfer(struct rtl9300_i2c *i2c, char read_write, return ret; ret = regmap_read_poll_timeout(i2c->regmap, i2c->reg_base + RTL9300_I2C_MST_CTRL1, - val, !(val & RTL9300_I2C_MST_CTRL1_I2C_TRIG), 100, 2000); + val, !(val & RTL9300_I2C_MST_CTRL1_I2C_TRIG), 100, 100000); if (ret) return ret; @@ -222,15 +225,6 @@ static int rtl9300_i2c_smbus_xfer(struct i2c_adapter *adap, u16 addr, unsigned s } switch (size) { - case I2C_SMBUS_QUICK: - ret = rtl9300_i2c_config_xfer(i2c, chan, addr, 0); - if (ret) - goto out_unlock; - ret = rtl9300_i2c_reg_addr_set(i2c, 0, 0); - if (ret) - goto out_unlock; - break; - case I2C_SMBUS_BYTE: if (read_write == I2C_SMBUS_WRITE) { ret = rtl9300_i2c_config_xfer(i2c, chan, addr, 0); @@ -281,15 +275,19 @@ static int rtl9300_i2c_smbus_xfer(struct i2c_adapter *adap, u16 addr, unsigned s ret = rtl9300_i2c_reg_addr_set(i2c, command, 1); if (ret) goto out_unlock; - ret = rtl9300_i2c_config_xfer(i2c, chan, addr, data->block[0]); + if (data->block[0] < 1 || data->block[0] > I2C_SMBUS_BLOCK_MAX) { + ret = -EINVAL; + goto out_unlock; + } + ret = rtl9300_i2c_config_xfer(i2c, chan, addr, data->block[0] + 1); if (ret) goto out_unlock; if (read_write == I2C_SMBUS_WRITE) { - ret = rtl9300_i2c_write(i2c, &data->block[1], data->block[0]); + ret = rtl9300_i2c_write(i2c, &data->block[0], data->block[0] + 1); if (ret) goto out_unlock; } - len = data->block[0]; + len = data->block[0] + 1; break; default: @@ -308,9 +306,9 @@ out_unlock: static u32 rtl9300_i2c_func(struct i2c_adapter *a) { - return I2C_FUNC_SMBUS_QUICK | I2C_FUNC_SMBUS_BYTE | - I2C_FUNC_SMBUS_BYTE_DATA | I2C_FUNC_SMBUS_WORD_DATA | - I2C_FUNC_SMBUS_BLOCK_DATA; + return I2C_FUNC_SMBUS_BYTE | I2C_FUNC_SMBUS_BYTE_DATA | + I2C_FUNC_SMBUS_WORD_DATA | I2C_FUNC_SMBUS_BLOCK_DATA | + I2C_FUNC_SMBUS_I2C_BLOCK; } static const struct i2c_algorithm rtl9300_i2c_algo = { @@ -319,7 +317,7 @@ static const struct i2c_algorithm rtl9300_i2c_algo = { }; static struct i2c_adapter_quirks rtl9300_i2c_quirks = { - .flags = I2C_AQ_NO_CLK_STRETCH, + .flags = I2C_AQ_NO_CLK_STRETCH | I2C_AQ_NO_ZERO_LEN, .max_read_len = 16, .max_write_len = 16, }; @@ -349,7 +347,7 @@ static int rtl9300_i2c_probe(struct platform_device *pdev) platform_set_drvdata(pdev, i2c); - if (device_get_child_node_count(dev) >= RTL9300_I2C_MUX_NCHAN) + if (device_get_child_node_count(dev) > RTL9300_I2C_MUX_NCHAN) return dev_err_probe(dev, -EINVAL, "Too many channels\n"); device_for_each_child_node(dev, child) { |