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Merge branch 'i2c-mux/for-next' of https://github.com/peda-r/i2c-mux into i2c/for-4.18 

This time around we have mostly trivial changes. However, there are
also a couple of "real" patches improving a few aspects of the
demux-pinctrl behavior and we also actually reset pca954x chips on
probe when we have the ability to do so.
This commit is contained in:
Wolfram Sang 2018-05-30 22:11:02 +02:00
parent 30a6475744 b10d7a1fd6
commit 03828ceee6
5 changed files with 20 additions and 16 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/i2c/i2c-mux.c
View File

@ -418,7 +418,7 @@ int i2c_mux_add_adapter(struct i2c_mux_core *muxc,
snprintf(symlink_name, sizeof(symlink_name), "channel-%u", chan_id);
WARN(sysfs_create_link(&muxc->dev->kobj, &priv->adap.dev.kobj,
symlink_name),
"can't create symlink for channel %u\n", chan_id);
"can't create symlink to channel %u\n", chan_id);
dev_info(&parent->dev, "Added multiplexed i2c bus %d\n",
i2c_adapter_id(&priv->adap));

5
drivers/i2c/muxes/i2c-demux-pinctrl.c
View File

@ -18,6 +18,7 @@
#include <linux/of.h>
#include <linux/pinctrl/consumer.h>
#include <linux/platform_device.h>
#include <linux/pm_runtime.h>
#include <linux/slab.h>
#include <linux/sysfs.h>
@ -105,7 +106,7 @@ static int i2c_demux_activate_master(struct i2c_demux_pinctrl_priv *priv, u32 ne
priv->cur_adap.owner = THIS_MODULE;
priv->cur_adap.algo = &priv->algo;
priv->cur_adap.algo_data = priv;
priv->cur_adap.dev.parent = priv->dev;
priv->cur_adap.dev.parent = &adap->dev;
priv->cur_adap.class = adap->class;
priv->cur_adap.retries = adap->retries;
priv->cur_adap.timeout = adap->timeout;
@ -254,6 +255,8 @@ static int i2c_demux_pinctrl_probe(struct platform_device *pdev)
platform_set_drvdata(pdev, priv);
pm_runtime_no_callbacks(&pdev->dev);
/* switch to first parent as active master */
i2c_demux_activate_master(priv, 0);

7
drivers/i2c/muxes/i2c-mux-ltc4306.c
View File

@ -206,8 +206,7 @@ static const struct of_device_id ltc4306_of_match[] = {
};
MODULE_DEVICE_TABLE(of, ltc4306_of_match);
static int ltc4306_probe(struct i2c_client *client,
const struct i2c_device_id *id)
static int ltc4306_probe(struct i2c_client *client)
{
struct i2c_adapter *adap = to_i2c_adapter(client->dev.parent);
const struct chip_desc *chip;
@ -221,7 +220,7 @@ static int ltc4306_probe(struct i2c_client *client,
chip = of_device_get_match_data(&client->dev);
if (!chip)
chip = &chips[id->driver_data];
chip = &chips[i2c_match_id(ltc4306_id, client)->driver_data];
idle_disc = device_property_read_bool(&client->dev,
"i2c-mux-idle-disconnect");
@ -310,7 +309,7 @@ static struct i2c_driver ltc4306_driver = {
.name = "ltc4306",
.of_match_table = of_match_ptr(ltc4306_of_match),
},
.probe = ltc4306_probe,
.probe_new = ltc4306_probe,
.remove = ltc4306_remove,
.id_table = ltc4306_id,
};

18
drivers/i2c/muxes/i2c-mux-pca954x.c
View File

@ -36,6 +36,7 @@
*/
#include <linux/device.h>
#include <linux/delay.h>
#include <linux/gpio/consumer.h>
#include <linux/i2c.h>
#include <linux/i2c-mux.h>
@ -373,7 +374,6 @@ static int pca954x_probe(struct i2c_client *client,
int num, force, class;
struct i2c_mux_core *muxc;
struct pca954x *data;
const struct of_device_id *match;
int ret;
if (!i2c_check_functionality(adap, I2C_FUNC_SMBUS_BYTE))
@ -389,15 +389,19 @@ static int pca954x_probe(struct i2c_client *client,
i2c_set_clientdata(client, muxc);
data->client = client;
/* Get the mux out of reset if a reset GPIO is specified. */
gpio = devm_gpiod_get_optional(&client->dev, "reset", GPIOD_OUT_LOW);
/* Reset the mux if a reset GPIO is specified. */
gpio = devm_gpiod_get_optional(&client->dev, "reset", GPIOD_OUT_HIGH);
if (IS_ERR(gpio))
return PTR_ERR(gpio);
if (gpio) {
udelay(1);
gpiod_set_value_cansleep(gpio, 0);
/* Give the chip some time to recover. */
udelay(1);
}
match = of_match_device(of_match_ptr(pca954x_of_match), &client->dev);
if (match)
data->chip = of_device_get_match_data(&client->dev);
else
data->chip = of_device_get_match_data(&client->dev);
if (!data->chip)
data->chip = &chips[id->driver_data];
if (data->chip->id.manufacturer_id != I2C_DEVICE_ID_NONE) {

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

@ -127,10 +127,8 @@ static int i2c_mux_reg_probe_dt(struct regmux *mux,
values = devm_kzalloc(&pdev->dev,
sizeof(*mux->data.values) * mux->data.n_values,
GFP_KERNEL);
if (!values) {
dev_err(&pdev->dev, "Cannot allocate values array");
if (!values)
return -ENOMEM;
}
for_each_child_of_node(np, child) {
of_property_read_u32(child, "reg", values + i);