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gpio: rgpio2p: Enhance reading of GPIO pin value

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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>
Reviewed-by: Peng Fan <peng.fan@nxp.com>
Reviewed-by: Fabio Estevam <festevam@denx.de>
This commit is contained in:
Christoph Fritz 2022-04-05 12:29:30 +02:00 committed by Stefano Babic
parent 9d371e5fea
commit 0539d16d22
1 changed files with 13 additions and 1 deletions
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12
drivers/gpio/imx_rgpio2p.c
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@ -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)
{
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)