diff options
| author | Kouei Abe <kouei.abe.cp@renesas.com> | 2017-05-13 15:48:04 +0200 |
|---|---|---|
| committer | Nobuhiro Iwamatsu <iwamatsu@nigauri.org> | 2017-05-22 04:37:30 +0900 |
| commit | 1815c297387babb250ca2b845b5647b332b232c2 (patch) | |
| tree | 2cd659333cc5df9162ca2e561a2dd02f136acb67 /drivers/gpio | |
| parent | a375ff8e14bea0a5cbfff99d6456aa8d9a3320ab (diff) | |
gpio: rcar_gen3: Fix GPIO read support
This patch fixes to read the GPIO status after confirming the
INOUT setting.
Signed-off-by: Kouei Abe <kouei.abe.cp@renesas.com>
Signed-off-by: Hiroyuki Yokoyama <hiroyuki.yokoyama.vx@renesas.com>
Cc: Hiroyuki Yokoyama <hiroyuki.yokoyama.vx@renesas.com>
Cc: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
Cc: Tom Rini <trini@konsulko.com>
Diffstat (limited to 'drivers/gpio')
| -rw-r--r-- | drivers/gpio/sh_pfc.c | 17 |
1 files changed, 11 insertions, 6 deletions
diff --git a/drivers/gpio/sh_pfc.c b/drivers/gpio/sh_pfc.c index a0eac137c2..ad8da9ef28 100644 --- a/drivers/gpio/sh_pfc.c +++ b/drivers/gpio/sh_pfc.c @@ -66,17 +66,18 @@ static void gpio_write_raw_reg(void *mapped_reg, } static int gpio_read_bit(struct pinmux_data_reg *dr, + unsigned long offset, unsigned long in_pos) { unsigned long pos; pos = dr->reg_width - (in_pos + 1); - debug("read_bit: addr = %lx, pos = %ld, " - "r_width = %ld\n", dr->reg, pos, dr->reg_width); + debug("read_bit: addr = %lx, pos = %ld, r_width = %ld\n", + dr->reg + offset, pos, dr->reg_width); - return - (gpio_read_raw_reg(dr->mapped_reg + 0x4, dr->reg_width) >> pos) & 1; + return (gpio_read_raw_reg(dr->mapped_reg + offset, + dr->reg_width) >> pos) & 1; } static void gpio_write_bit(struct pinmux_data_reg *dr, @@ -559,12 +560,16 @@ static int sh_gpio_direction_output(unsigned offset, int value) static int sh_gpio_get_value(struct pinmux_info *gpioc, unsigned gpio) { struct pinmux_data_reg *dr = NULL; - int bit = 0; + int bit = 0, offset = 0; if (!gpioc || get_data_reg(gpioc, gpio, &dr, &bit) != 0) return -1; +#if defined(CONFIG_RCAR_GEN3) + if ((gpioc->gpios[gpio].flags & PINMUX_FLAG_TYPE) == PINMUX_TYPE_INPUT) + offset += 4; +#endif - return gpio_read_bit(dr, bit); + return gpio_read_bit(dr, offset, bit); } static int sh_gpio_get(unsigned offset) |