Add support for reading GPIO pin value when function is output. With this patch applied, gpio toggle command is working.

Signed-off-by: Christoph Fritz chf.fritz@googlemail.com Cc: Fabio Estevam festevam@gmail.com Reviewed-by: Peng Fan peng.fan@nxp.com --- drivers/gpio/imx_rgpio2p.c | 14 +++++++++++++- 1 file changed, 13 insertions(+), 1 deletion(-)

diff --git a/drivers/gpio/imx_rgpio2p.c b/drivers/gpio/imx_rgpio2p.c index 0e2874ca95c..175e460aff5 100644 --- a/drivers/gpio/imx_rgpio2p.c +++ b/drivers/gpio/imx_rgpio2p.c @@ -39,6 +39,14 @@ static int imx_rgpio2p_is_output(struct gpio_regs *regs, int offset) return val & (1 << offset) ? 1 : 0; }

+static int imx_rgpio2p_bank_get_direction(struct gpio_regs *regs, int offset) +{ + if ((readl(&regs->gpio_pddr) >> offset) & 0x01) + return IMX_RGPIO2P_DIRECTION_OUT; + + return IMX_RGPIO2P_DIRECTION_IN; +} + static void imx_rgpio2p_bank_direction(struct gpio_regs *regs, int offset, enum imx_rgpio2p_direction direction) { @@ -67,7 +75,11 @@ static void imx_rgpio2p_bank_set_value(struct gpio_regs *regs, int offset,

static int imx_rgpio2p_bank_get_value(struct gpio_regs *regs, int offset) { - return (readl(&regs->gpio_pdir) >> offset) & 0x01; + if (imx_rgpio2p_bank_get_direction(regs, offset) == + IMX_RGPIO2P_DIRECTION_IN) + return (readl(&regs->gpio_pdir) >> offset) & 0x01; + + return (readl(&regs->gpio_pdor) >> offset) & 0x01; }

static int imx_rgpio2p_direction_input(struct udevice *dev, unsigned offset)