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gpio: sx150x: Add support for sx1502 

Signed-off-by: Peter Rosin <peda@axentia.se>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This commit is contained in:
Peter Rosin 2015-12-15 23:01:34 +01:00 committed by Linus Walleij
parent 9ae482104c
commit 50e8df09e4
2 changed files with 51 additions and 5 deletions
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3
Documentation/devicetree/bindings/gpio/gpio-sx150x.txt
View File

@ -5,7 +5,8 @@ Required properties:
- compatible: should be "semtech,sx1506q",
"semtech,sx1508q",
"semtech,sx1509q".
"semtech,sx1509q",
"semtech,sx1502q".
- reg: The I2C slave address for this device.

53
drivers/gpio/gpio-sx150x.c
View File

@ -32,8 +32,19 @@
#define NO_UPDATE_PENDING -1
/* The chip models of sx150x */
#define SX150X_456 0
#define SX150X_789 1
#define SX150X_123 0
#define SX150X_456 1
#define SX150X_789 2
struct sx150x_123_pri {
u8 reg_pld_mode;
u8 reg_pld_table0;
u8 reg_pld_table1;
u8 reg_pld_table2;
u8 reg_pld_table3;
u8 reg_pld_table4;
u8 reg_advance;
};
struct sx150x_456_pri {
u8 reg_pld_mode;
@ -65,6 +76,7 @@ struct sx150x_device_data {
u8 reg_sense;
u8 ngpios;
union {
struct sx150x_123_pri x123;
struct sx150x_456_pri x456;
struct sx150x_789_pri x789;
} pri;
@ -142,12 +154,33 @@ static const struct sx150x_device_data sx150x_devices[] = {
},
.ngpios = 16
},
[3] = { /* sx1502q */
.model = SX150X_123,
.reg_pullup = 0x02,
.reg_pulldn = 0x03,
.reg_dir = 0x01,
.reg_data = 0x00,
.reg_irq_mask = 0x05,
.reg_irq_src = 0x08,
.reg_sense = 0x07,
.pri.x123 = {
.reg_pld_mode = 0x10,
.reg_pld_table0 = 0x11,
.reg_pld_table1 = 0x12,
.reg_pld_table2 = 0x13,
.reg_pld_table3 = 0x14,
.reg_pld_table4 = 0x15,
.reg_advance = 0xad,
},
.ngpios = 8,
},
};
static const struct i2c_device_id sx150x_id[] = {
{"sx1508q", 0},
{"sx1509q", 1},
{"sx1506q", 2},
{"sx1502q", 3},
{}
};
MODULE_DEVICE_TABLE(i2c, sx150x_id);
@ -156,6 +189,7 @@ static const struct of_device_id sx150x_of_match[] = {
{ .compatible = "semtech,sx1508q" },
{ .compatible = "semtech,sx1509q" },
{ .compatible = "semtech,sx1506q" },
{ .compatible = "semtech,sx1502q" },
{},
};
MODULE_DEVICE_TABLE(of, sx150x_of_match);
@ -545,10 +579,14 @@ static int sx150x_init_hw(struct sx150x_chip *chip,
err = sx150x_i2c_write(chip->client,
chip->dev_cfg->pri.x789.reg_misc,
0x01);
else
else if (chip->dev_cfg->model == SX150X_456)
err = sx150x_i2c_write(chip->client,
chip->dev_cfg->pri.x456.reg_advance,
0x04);
else
err = sx150x_i2c_write(chip->client,
chip->dev_cfg->pri.x123.reg_advance,
0x00);
if (err < 0)
return err;
@ -574,13 +612,20 @@ static int sx150x_init_hw(struct sx150x_chip *chip,
pdata->io_polarity);
if (err < 0)
return err;
} else {
} else if (chip->dev_cfg->model == SX150X_456) {
/* Set all pins to work in normal mode */
err = sx150x_init_io(chip,
chip->dev_cfg->pri.x456.reg_pld_mode,
0);
if (err < 0)
return err;
} else {
/* Set all pins to work in normal mode */
err = sx150x_init_io(chip,
chip->dev_cfg->pri.x123.reg_pld_mode,
0);
if (err < 0)
return err;
}