diff options
| author | Ye Li <ye.li@nxp.com> | 2017-04-28 09:36:57 -0500 |
|---|---|---|
| committer | Ye Li <ye.li@nxp.com> | 2018-04-27 02:21:25 -0700 |
| commit | 8cca3efba0d508b2c267f8a32b302970dd05244d (patch) | |
| tree | ed171cc93703918b51855936db1dce3583f5242a /drivers/gpio | |
| parent | 74d68c1b9f098c44992d591616372f0ec5ff13dd (diff) | |
MLK-14938-22 mxc_gpio: Change to get value from DR register
Currently the driver gets value from PSR register, but this register
is only for input mode. For output mode, it always return 0 not the
value we set for output.
This patch changes to use DR register, which returns the DR value for
output mode, and PSR value for input mode.
Signed-off-by: Ye Li <ye.li@nxp.com>
(cherry picked from commit 4afc3f90943c6b117f79b66d2cd04e64f437b0c2)
Diffstat (limited to 'drivers/gpio')
| -rw-r--r-- | drivers/gpio/mxc_gpio.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/gpio/mxc_gpio.c b/drivers/gpio/mxc_gpio.c index 37b8e0ae62..85e469e458 100644 --- a/drivers/gpio/mxc_gpio.c +++ b/drivers/gpio/mxc_gpio.c @@ -169,7 +169,7 @@ int gpio_get_value(unsigned gpio) regs = (struct gpio_regs *)gpio_ports[port]; - val = (readl(®s->gpio_psr) >> gpio) & 0x01; + val = (readl(®s->gpio_dr) >> gpio) & 0x01; RDC_SPINLOCK_DOWN(port); @@ -254,7 +254,7 @@ static void mxc_gpio_bank_set_value(struct gpio_regs *regs, int offset, static int mxc_gpio_bank_get_value(struct gpio_regs *regs, int offset) { - return (readl(®s->gpio_psr) >> offset) & 0x01; + return (readl(®s->gpio_dr) >> offset) & 0x01; } /* set GPIO pin 'gpio' as an input */ |