diff options
Diffstat (limited to 'drivers/gpio/gpio-pca953x.c')
| -rw-r--r-- | drivers/gpio/gpio-pca953x.c | 67 |
1 files changed, 36 insertions, 31 deletions
diff --git a/drivers/gpio/gpio-pca953x.c b/drivers/gpio/gpio-pca953x.c index 1c313c710be3..9c693ae17956 100644 --- a/drivers/gpio/gpio-pca953x.c +++ b/drivers/gpio/gpio-pca953x.c @@ -78,10 +78,10 @@ struct pca953x_chip { #ifdef CONFIG_GPIO_PCA953X_IRQ struct mutex irq_lock; - uint16_t irq_mask; - uint16_t irq_stat; - uint16_t irq_trig_raise; - uint16_t irq_trig_fall; + u32 irq_mask; + u32 irq_stat; + u32 irq_trig_raise; + u32 irq_trig_fall; int irq_base; #endif @@ -98,12 +98,11 @@ static int pca953x_write_reg(struct pca953x_chip *chip, int reg, u32 val) if (chip->gpio_chip.ngpio <= 8) ret = i2c_smbus_write_byte_data(chip->client, reg, val); else if (chip->gpio_chip.ngpio == 24) { - ret = i2c_smbus_write_word_data(chip->client, + cpu_to_le32s(&val); + ret = i2c_smbus_write_i2c_block_data(chip->client, (reg << 2) | REG_ADDR_AI, - val & 0xffff); - ret = i2c_smbus_write_byte_data(chip->client, - (reg << 2) + 2, - (val & 0xff0000) >> 16); + 3, + (u8 *) &val); } else { switch (chip->chip_type) { @@ -135,22 +134,27 @@ static int pca953x_read_reg(struct pca953x_chip *chip, int reg, u32 *val) { int ret; - if (chip->gpio_chip.ngpio <= 8) + if (chip->gpio_chip.ngpio <= 8) { ret = i2c_smbus_read_byte_data(chip->client, reg); - else if (chip->gpio_chip.ngpio == 24) { - ret = i2c_smbus_read_word_data(chip->client, reg << 2); - ret |= (i2c_smbus_read_byte_data(chip->client, - (reg << 2) + 2)<<16); + *val = ret; } - else + else if (chip->gpio_chip.ngpio == 24) { + *val = 0; + ret = i2c_smbus_read_i2c_block_data(chip->client, + (reg << 2) | REG_ADDR_AI, + 3, + (u8 *) val); + le32_to_cpus(val); + } else { ret = i2c_smbus_read_word_data(chip->client, reg << 1); + *val = ret; + } if (ret < 0) { dev_err(&chip->client->dev, "failed reading register\n"); return ret; } - *val = (u32)ret; return 0; } @@ -349,8 +353,8 @@ static void pca953x_irq_bus_lock(struct irq_data *d) static void pca953x_irq_bus_sync_unlock(struct irq_data *d) { struct pca953x_chip *chip = irq_data_get_irq_chip_data(d); - uint16_t new_irqs; - uint16_t level; + u32 new_irqs; + u32 level; /* Look for any newly setup interrupt */ new_irqs = chip->irq_trig_fall | chip->irq_trig_raise; @@ -368,8 +372,8 @@ static void pca953x_irq_bus_sync_unlock(struct irq_data *d) static int pca953x_irq_set_type(struct irq_data *d, unsigned int type) { struct pca953x_chip *chip = irq_data_get_irq_chip_data(d); - uint16_t level = d->irq - chip->irq_base; - uint16_t mask = 1 << level; + u32 level = d->irq - chip->irq_base; + u32 mask = 1 << level; if (!(type & IRQ_TYPE_EDGE_BOTH)) { dev_err(&chip->client->dev, "irq %d: unsupported type %d\n", @@ -399,12 +403,12 @@ static struct irq_chip pca953x_irq_chip = { .irq_set_type = pca953x_irq_set_type, }; -static uint16_t pca953x_irq_pending(struct pca953x_chip *chip) +static u32 pca953x_irq_pending(struct pca953x_chip *chip) { u32 cur_stat; - uint16_t old_stat; - uint16_t pending; - uint16_t trigger; + u32 old_stat; + u32 pending; + u32 trigger; int ret, offset = 0; switch (chip->chip_type) { @@ -440,8 +444,8 @@ static uint16_t pca953x_irq_pending(struct pca953x_chip *chip) static irqreturn_t pca953x_irq_handler(int irq, void *devid) { struct pca953x_chip *chip = devid; - uint16_t pending; - uint16_t level; + u32 pending; + u32 level; pending = pca953x_irq_pending(chip); @@ -564,7 +568,7 @@ static void pca953x_irq_teardown(struct pca953x_chip *chip) * WARNING: This is DEPRECATED and will be removed eventually! */ static void -pca953x_get_alt_pdata(struct i2c_client *client, int *gpio_base, int *invert) +pca953x_get_alt_pdata(struct i2c_client *client, int *gpio_base, u32 *invert) { struct device_node *node; const __be32 *val; @@ -592,13 +596,13 @@ pca953x_get_alt_pdata(struct i2c_client *client, int *gpio_base, int *invert) } #else static void -pca953x_get_alt_pdata(struct i2c_client *client, int *gpio_base, int *invert) +pca953x_get_alt_pdata(struct i2c_client *client, int *gpio_base, u32 *invert) { *gpio_base = -1; } #endif -static int __devinit device_pca953x_init(struct pca953x_chip *chip, int invert) +static int __devinit device_pca953x_init(struct pca953x_chip *chip, u32 invert) { int ret; @@ -617,7 +621,7 @@ out: return ret; } -static int __devinit device_pca957x_init(struct pca953x_chip *chip, int invert) +static int __devinit device_pca957x_init(struct pca953x_chip *chip, u32 invert) { int ret; u32 val = 0; @@ -653,8 +657,9 @@ static int __devinit pca953x_probe(struct i2c_client *client, { struct pca953x_platform_data *pdata; struct pca953x_chip *chip; - int irq_base=0, invert=0; + int irq_base = 0; int ret; + u32 invert = 0; chip = kzalloc(sizeof(struct pca953x_chip), GFP_KERNEL); if (chip == NULL) |