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| author | mario.six@gdsys.cc <mario.six@gdsys.cc> | 2016-05-25 15:15:23 +0200 |
|---|---|---|
| committer | York Sun <york.sun@nxp.com> | 2016-06-03 22:14:20 -0700 |
| commit | 743268f5146e3fd93abb8b6142ef6a259a0656c5 (patch) | |
| tree | d28611bc6504378b0316582e62bf8f7f3132c219 /drivers/gpio | |
| parent | 51781783c59ad0080621d777579eb8acd14aa0ed (diff) | |
| download | u-boot-imx-743268f5146e3fd93abb8b6142ef6a259a0656c5.zip u-boot-imx-743268f5146e3fd93abb8b6142ef6a259a0656c5.tar.gz u-boot-imx-743268f5146e3fd93abb8b6142ef6a259a0656c5.tar.bz2 | |
dm: test: Add GPIO open drain tests
Add some tests for the new open drain setting feature of the GPIO
uclass, and extend the capabilities of the sandbox GPIO driver
accordingly.
Signed-off-by: Mario Six <mario.six@gdsys.cc>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: York Sun <york.sun@nxp.com>
Diffstat (limited to 'drivers/gpio')
| -rw-r--r-- | drivers/gpio/sandbox.c | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/drivers/gpio/sandbox.c b/drivers/gpio/sandbox.c index a9b1efc..f6435a0 100644 --- a/drivers/gpio/sandbox.c +++ b/drivers/gpio/sandbox.c @@ -15,6 +15,7 @@ DECLARE_GLOBAL_DATA_PTR; /* Flags for each GPIO */ #define GPIOF_OUTPUT (1 << 0) /* Currently set as an output */ #define GPIOF_HIGH (1 << 1) /* Currently set high */ +#define GPIOF_ODR (1 << 2) /* Currently set to open drain mode */ struct gpio_state { const char *label; /* label given by requester */ @@ -70,6 +71,16 @@ int sandbox_gpio_set_value(struct udevice *dev, unsigned offset, int value) return set_gpio_flag(dev, offset, GPIOF_HIGH, value); } +int sandbox_gpio_get_open_drain(struct udevice *dev, unsigned offset) +{ + return get_gpio_flag(dev, offset, GPIOF_ODR); +} + +int sandbox_gpio_set_open_drain(struct udevice *dev, unsigned offset, int value) +{ + return set_gpio_flag(dev, offset, GPIOF_ODR, value); +} + int sandbox_gpio_get_direction(struct udevice *dev, unsigned offset) { return get_gpio_flag(dev, offset, GPIOF_OUTPUT); @@ -124,6 +135,28 @@ static int sb_gpio_set_value(struct udevice *dev, unsigned offset, int value) return sandbox_gpio_set_value(dev, offset, value); } +/* read GPIO ODR value of port 'offset' */ +static int sb_gpio_get_open_drain(struct udevice *dev, unsigned offset) +{ + debug("%s: offset:%u\n", __func__, offset); + + return sandbox_gpio_get_open_drain(dev, offset); +} + +/* write GPIO ODR value to port 'offset' */ +static int sb_gpio_set_open_drain(struct udevice *dev, unsigned offset, int value) +{ + debug("%s: offset:%u, value = %d\n", __func__, offset, value); + + if (!sandbox_gpio_get_direction(dev, offset)) { + printf("sandbox_gpio: error: set_open_drain on input gpio %u\n", + offset); + return -1; + } + + return sandbox_gpio_set_open_drain(dev, offset, value); +} + static int sb_gpio_get_function(struct udevice *dev, unsigned offset) { if (get_gpio_flag(dev, offset, GPIOF_OUTPUT)) @@ -154,6 +187,8 @@ static const struct dm_gpio_ops gpio_sandbox_ops = { .direction_output = sb_gpio_direction_output, .get_value = sb_gpio_get_value, .set_value = sb_gpio_set_value, + .get_open_drain = sb_gpio_get_open_drain, + .set_open_drain = sb_gpio_set_open_drain, .get_function = sb_gpio_get_function, .xlate = sb_gpio_xlate, }; |