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mfd: max96745: Reduce i2c operations

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Fixes: 8346555424 ("mfd: max96745: Support i2c-mux-idle-disconnect property")
Signed-off-by: Wyon Bi <bivvy.bi@rock-chips.com>
Change-Id: Ib6cc9b197561bf1326442cebbd9844af3853d06a
This commit is contained in:
Wyon Bi
2023-03-20 08:43:31 +00:00
parent d011989675
commit e54650456a
1 changed files with 15 additions and 7 deletions
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22
drivers/mfd/max96745.c
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@@ -18,6 +18,7 @@ struct max96745 {
struct device *dev;
struct regmap *regmap;
struct i2c_mux_core *muxc;
bool idle_disc;
struct gpio_desc *enable_gpio;
struct gpio_desc *lock_gpio;
};
@@ -63,6 +64,9 @@ static int max96745_select(struct i2c_mux_core *muxc, u32 chan)
{
struct max96745 *max96745 = dev_get_drvdata(muxc->dev);
if (!max96745->idle_disc)
return 0;
if (chan == 1)
regmap_update_bits(max96745->regmap, 0x0086, DIS_REM_CC,
FIELD_PREP(DIS_REM_CC, 0));
@@ -77,6 +81,9 @@ static int max96745_deselect(struct i2c_mux_core *muxc, u32 chan)
{
struct max96745 *max96745 = dev_get_drvdata(muxc->dev);
if (!max96745->idle_disc)
return 0;
if (chan == 1)
regmap_update_bits(max96745->regmap, 0x0086, DIS_REM_CC,
FIELD_PREP(DIS_REM_CC, 1));
@@ -109,10 +116,12 @@ static void max96745_power_on(struct max96745 *max96745)
msleep(200);
}
regmap_update_bits(max96745->regmap, 0x0076, DIS_REM_CC,
FIELD_PREP(DIS_REM_CC, 1));
regmap_update_bits(max96745->regmap, 0x0086, DIS_REM_CC,
FIELD_PREP(DIS_REM_CC, 1));
if (max96745->idle_disc) {
regmap_update_bits(max96745->regmap, 0x0076, DIS_REM_CC,
FIELD_PREP(DIS_REM_CC, 1));
regmap_update_bits(max96745->regmap, 0x0086, DIS_REM_CC,
FIELD_PREP(DIS_REM_CC, 1));
}
}
static ssize_t line_fault_monitor_show(struct device *device,
@@ -198,7 +207,6 @@ static int max96745_i2c_probe(struct i2c_client *client)
struct device_node *child;
struct max96745 *max96745;
unsigned int nr = 0;
bool idle_disc;
int ret;
for_each_available_child_of_node(dev->of_node, child) {
@@ -212,11 +220,11 @@ static int max96745_i2c_probe(struct i2c_client *client)
if (!max96745)
return -ENOMEM;
idle_disc = device_property_read_bool(dev, "i2c-mux-idle-disconnect");
max96745->idle_disc = device_property_read_bool(dev, "i2c-mux-idle-disconnect");
max96745->muxc = i2c_mux_alloc(client->adapter, dev, nr,
0, I2C_MUX_LOCKED, max96745_select,
idle_disc ? max96745_deselect : NULL);
max96745_deselect);
if (!max96745->muxc)
return -ENOMEM;