diff options
| author | Fugang Duan <fugang.duan@nxp.com> | 2019-06-26 10:25:35 +0800 |
|---|---|---|
| committer | Dong Aisheng <aisheng.dong@nxp.com> | 2019-11-25 15:46:28 +0800 |
| commit | 5d8768625f9dc1ee1b122de7b0bea2aea1be0ff5 (patch) | |
| tree | 5490f8119daea68f7acc2ec8ed38500ce8146784 | |
| parent | 01f989853efe31ceb9182ad2d794d72e73e65b2f (diff) | |
MLK-19251-01 gpio: max732x: add output IO default voltage set
Add output IOs defalut voltage set in device tree by add property like:
out-default = /bits/ 16 <mask val>;
Reviewed-by: Haibo Chen <haibo.chen@nxp.com>
Signed-off-by: Fugang Duan <fugang.duan@nxp.com>
| -rw-r--r-- | Documentation/devicetree/bindings/gpio/gpio-max732x.txt | 1 | ||||
| -rw-r--r-- | drivers/gpio/gpio-max732x.c | 17 |
2 files changed, 18 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/gpio/gpio-max732x.txt b/Documentation/devicetree/bindings/gpio/gpio-max732x.txt index b3a9c0c32823..7f09979c047f 100644 --- a/Documentation/devicetree/bindings/gpio/gpio-max732x.txt +++ b/Documentation/devicetree/bindings/gpio/gpio-max732x.txt @@ -31,6 +31,7 @@ Optional properties: - first cell is the pin number - second cell is used to specify flags - interrupts: Interrupt specifier for the controllers interrupt. + - out-default: set the output IO default voltage. Exp: out-default = /bits/ 16 <mask val>; Please refer to gpio.txt in this directory for details of the common GPIO bindings used by client devices. diff --git a/drivers/gpio/gpio-max732x.c b/drivers/gpio/gpio-max732x.c index 9d2e9258a7c1..3c72ae0bcec9 100644 --- a/drivers/gpio/gpio-max732x.c +++ b/drivers/gpio/gpio-max732x.c @@ -78,6 +78,12 @@ #define INT_CAPS(x) (((uint64_t)(x)) << 32) enum { + OUTPUT_MASK, + OUTPUT_VAL, + OUTPUT_NUM, +}; + +enum { MAX7319, MAX7320, MAX7321, @@ -623,6 +629,8 @@ static int max732x_probe(struct i2c_client *client, struct i2c_client *c; uint16_t addr_a, addr_b; int ret, nr_port; + u16 out_set[OUTPUT_NUM]; + unsigned long mask, val; pdata = dev_get_platdata(&client->dev); node = client->dev.of_node; @@ -716,6 +724,15 @@ static int max732x_probe(struct i2c_client *client, } i2c_set_clientdata(client, chip); + + /* set the output IO default voltage */ + if (!of_property_read_u16_array(node, "out-default", out_set, + ARRAY_SIZE(out_set))) { + mask = out_set[OUTPUT_MASK] & chip->dir_output; + val = out_set[OUTPUT_VAL]; + max732x_gpio_set_multiple(&chip->gpio_chip, &mask, &val); + } + return 0; } |