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path: root/drivers/gpio/gpio-sx150x.c
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Diffstat (limited to 'drivers/gpio/gpio-sx150x.c')
-rw-r--r--drivers/gpio/gpio-sx150x.c83
1 files changed, 61 insertions, 22 deletions
diff --git a/drivers/gpio/gpio-sx150x.c b/drivers/gpio/gpio-sx150x.c
index 76f920173a2f..e6cff1cabd0c 100644
--- a/drivers/gpio/gpio-sx150x.c
+++ b/drivers/gpio/gpio-sx150x.c
@@ -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);
@@ -156,15 +189,11 @@ 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);
-struct sx150x_chip *to_sx150x(struct gpio_chip *gc)
-{
- return container_of(gc, struct sx150x_chip, gpio_chip);
-}
-
static s32 sx150x_i2c_write(struct i2c_client *client, u8 reg, u8 val)
{
s32 err = i2c_smbus_write_byte_data(client, reg, val);
@@ -301,7 +330,7 @@ static int sx150x_io_output(struct sx150x_chip *chip, unsigned offset, int val)
static int sx150x_gpio_get(struct gpio_chip *gc, unsigned offset)
{
- struct sx150x_chip *chip = to_sx150x(gc);
+ struct sx150x_chip *chip = gpiochip_get_data(gc);
int status = -EINVAL;
if (!offset_is_oscio(chip, offset)) {
@@ -310,12 +339,12 @@ static int sx150x_gpio_get(struct gpio_chip *gc, unsigned offset)
mutex_unlock(&chip->lock);
}
- return status;
+ return (status < 0) ? status : !!status;
}
static void sx150x_gpio_set(struct gpio_chip *gc, unsigned offset, int val)
{
- struct sx150x_chip *chip = to_sx150x(gc);
+ struct sx150x_chip *chip = gpiochip_get_data(gc);
mutex_lock(&chip->lock);
if (offset_is_oscio(chip, offset))
@@ -327,7 +356,7 @@ static void sx150x_gpio_set(struct gpio_chip *gc, unsigned offset, int val)
static int sx150x_gpio_direction_input(struct gpio_chip *gc, unsigned offset)
{
- struct sx150x_chip *chip = to_sx150x(gc);
+ struct sx150x_chip *chip = gpiochip_get_data(gc);
int status = -EINVAL;
if (!offset_is_oscio(chip, offset)) {
@@ -342,7 +371,7 @@ static int sx150x_gpio_direction_output(struct gpio_chip *gc,
unsigned offset,
int val)
{
- struct sx150x_chip *chip = to_sx150x(gc);
+ struct sx150x_chip *chip = gpiochip_get_data(gc);
int status = 0;
if (!offset_is_oscio(chip, offset)) {
@@ -355,7 +384,7 @@ static int sx150x_gpio_direction_output(struct gpio_chip *gc,
static void sx150x_irq_mask(struct irq_data *d)
{
- struct sx150x_chip *chip = to_sx150x(irq_data_get_irq_chip_data(d));
+ struct sx150x_chip *chip = gpiochip_get_data(irq_data_get_irq_chip_data(d));
unsigned n = d->hwirq;
chip->irq_masked |= (1 << n);
@@ -364,7 +393,7 @@ static void sx150x_irq_mask(struct irq_data *d)
static void sx150x_irq_unmask(struct irq_data *d)
{
- struct sx150x_chip *chip = to_sx150x(irq_data_get_irq_chip_data(d));
+ struct sx150x_chip *chip = gpiochip_get_data(irq_data_get_irq_chip_data(d));
unsigned n = d->hwirq;
chip->irq_masked &= ~(1 << n);
@@ -373,7 +402,7 @@ static void sx150x_irq_unmask(struct irq_data *d)
static int sx150x_irq_set_type(struct irq_data *d, unsigned int flow_type)
{
- struct sx150x_chip *chip = to_sx150x(irq_data_get_irq_chip_data(d));
+ struct sx150x_chip *chip = gpiochip_get_data(irq_data_get_irq_chip_data(d));
unsigned n, val = 0;
if (flow_type & (IRQ_TYPE_LEVEL_HIGH | IRQ_TYPE_LEVEL_LOW))
@@ -428,14 +457,14 @@ static irqreturn_t sx150x_irq_thread_fn(int irq, void *dev_id)
static void sx150x_irq_bus_lock(struct irq_data *d)
{
- struct sx150x_chip *chip = to_sx150x(irq_data_get_irq_chip_data(d));
+ struct sx150x_chip *chip = gpiochip_get_data(irq_data_get_irq_chip_data(d));
mutex_lock(&chip->lock);
}
static void sx150x_irq_bus_sync_unlock(struct irq_data *d)
{
- struct sx150x_chip *chip = to_sx150x(irq_data_get_irq_chip_data(d));
+ struct sx150x_chip *chip = gpiochip_get_data(irq_data_get_irq_chip_data(d));
unsigned n;
if (chip->irq_update == NO_UPDATE_PENDING)
@@ -473,7 +502,7 @@ static void sx150x_init_chip(struct sx150x_chip *chip,
chip->client = client;
chip->dev_cfg = &sx150x_devices[driver_data];
- chip->gpio_chip.dev = &client->dev;
+ chip->gpio_chip.parent = &client->dev;
chip->gpio_chip.label = client->name;
chip->gpio_chip.direction_input = sx150x_gpio_direction_input;
chip->gpio_chip.direction_output = sx150x_gpio_direction_output;
@@ -545,10 +574,14 @@ 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 +607,20 @@ 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;
}
@@ -647,7 +687,7 @@ static int sx150x_probe(struct i2c_client *client,
if (rc < 0)
return rc;
- rc = gpiochip_add(&chip->gpio_chip);
+ rc = gpiochip_add_data(&chip->gpio_chip, chip);
if (rc)
return rc;
@@ -680,7 +720,6 @@ static int sx150x_remove(struct i2c_client *client)
static struct i2c_driver sx150x_driver = {
.driver = {
.name = "sx150x",
- .owner = THIS_MODULE,
.of_match_table = of_match_ptr(sx150x_of_match),
},
.probe = sx150x_probe,
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.