diff options
| author | Christoph Fritz <chf.fritz@googlemail.com> | 2022-04-05 13:29:30 +0300 |
|---|---|---|
| committer | Stefano Babic <sbabic@denx.de> | 2022-05-23 12:37:58 +0300 |
| commit | 0539d16d22f65b5958800489701249f990531073 (patch) | |
| tree | 5fd79af0aabbd343357e2d4cc78ffa8a33f71a3c | |
| parent | 9d371e5fea39002c077db3335395ffc62e84e5fa (diff) | |
| download | u-boot-0539d16d22f65b5958800489701249f990531073.tar.xz | |
gpio: rgpio2p: Enhance reading of GPIO pin value
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>
| -rw-r--r-- | drivers/gpio/imx_rgpio2p.c | 14 |
1 files changed, 13 insertions, 1 deletions
diff --git a/drivers/gpio/imx_rgpio2p.c b/drivers/gpio/imx_rgpio2p.c index 0e2874ca95..175e460aff 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(®s->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(®s->gpio_pdir) >> offset) & 0x01; + if (imx_rgpio2p_bank_get_direction(regs, offset) == + IMX_RGPIO2P_DIRECTION_IN) + return (readl(®s->gpio_pdir) >> offset) & 0x01; + + return (readl(®s->gpio_pdor) >> offset) & 0x01; } static int imx_rgpio2p_direction_input(struct udevice *dev, unsigned offset) |