diff options
Diffstat (limited to 'drivers/sh/pfc.c')
| -rw-r--r-- | drivers/sh/pfc.c | 15 |
1 files changed, 14 insertions, 1 deletions
diff --git a/drivers/sh/pfc.c b/drivers/sh/pfc.c index e7d127a9c1c5..cfca0aaf9820 100644 --- a/drivers/sh/pfc.c +++ b/drivers/sh/pfc.c @@ -135,6 +135,19 @@ static void gpio_write_raw_reg(void __iomem *mapped_reg, BUG(); } +static int gpio_read_bit(struct pinmux_data_reg *dr, + unsigned long in_pos) +{ + unsigned long pos; + + pos = dr->reg_width - (in_pos + 1); + + pr_debug("read_bit: addr = %lx, pos = %ld, " + "r_width = %ld\n", dr->reg, pos, dr->reg_width); + + return (gpio_read_raw_reg(dr->mapped_reg, dr->reg_width) >> pos) & 1; +} + static void gpio_write_bit(struct pinmux_data_reg *dr, unsigned long in_pos, unsigned long value) { @@ -644,7 +657,7 @@ static int sh_gpio_get_value(struct pinmux_info *gpioc, unsigned gpio) if (!gpioc || get_data_reg(gpioc, gpio, &dr, &bit) != 0) return -EINVAL; - return gpio_read_reg(dr->mapped_reg, dr->reg_width, 1, bit, dr->reg); + return gpio_read_bit(dr, bit); } static int sh_gpio_get(struct gpio_chip *chip, unsigned offset) |