Sorry for slow replies :-( On Thu, Mar 7, 2013 at 2:17 PM, Ian Lartey <ian@xxxxxxxxxxxxxxx> wrote: > +static int palmas_gpio_read(struct palmas *palmas, unsigned int reg, > + int gpio, unsigned int *dest) I don't like "int gpio" here, please use "int offset". This is not a global GPIO number, it is an offset in the local gpio_chip, right? > +{ > + /* registers for second bank are identical and offset by 0x9 */ > + if (gpio > 7) > + reg += PALMAS_GPIO_DATA_IN2; > + > + return palmas_read(palmas, PALMAS_GPIO_BASE, reg, dest); > +} > + > +static int palmas_gpio_write(struct palmas *palmas, unsigned int reg, > + int gpio, unsigned int data) > +{ > + /* registers for second bank are identical and offset by 0x9 */ > + if (gpio > 7) > + reg += PALMAS_GPIO_DATA_IN2; > + > + return palmas_write(palmas, PALMAS_GPIO_BASE, reg, data); > +} > + > +static int palmas_gpio_update_bits(struct palmas *palmas, unsigned int reg, > + int gpio, unsigned int mask, unsigned int data) > +{ > + /* registers for second bank are identical and offset by 0x9 */ > + if (gpio > 7) > + reg += PALMAS_GPIO_DATA_IN2; > + > + return palmas_update_bits(palmas, PALMAS_GPIO_BASE, reg, mask, data); > +} > - ret = palmas_read(palmas, PALMAS_GPIO_BASE, PALMAS_GPIO_DATA_IN, &val); > + ret = palmas_gpio_read(palmas, PALMAS_GPIO_DATA_IN, offset, &val); (Obviously you are passing the offset.) > + ret = palmas_gpio_write(palmas, PALMAS_GPIO_SET_DATA_OUT, > + offset, BIT(offset % 8)); (..) > + ret = palmas_gpio_write(palmas, PALMAS_GPIO_CLEAR_DATA_OUT, > + offset, BIT(offset % 8)); (...) > + ret = palmas_gpio_update_bits(palmas, PALMAS_GPIO_DATA_DIR, > + offset, 1 << (offset % 8), 1 << (offset % 8)); Why aren't you using the BIT() macro here too? Further: if these functions are always used like this, with offset and some BIT() or (1 << (offset % 8)) why don't you move that latter part into the static helper and just pass offset into the helper? Yours, Linus Walleij -- To unsubscribe from this list: send the line "unsubscribe linux-doc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html