[PATCH v3 06/16] gpio: sandbox: Rename GPIO dir_flags to flags
Simon Glass
sjg at chromium.org
Sun Jan 24 22:11:45 CET 2021
Adjust the terminology in this driver to reflect that fact that all flags
are handled, not just direction flags.
Create a new access function to get the full GPIO state, not just the
direction flags. Drop the static invalid_dir_flags since we can rely on a
segfault if something is wrong.
Signed-off-by: Simon Glass <sjg at chromium.org>
Reviewed-by: Patrick Delaunay <patrick.delaunay at foss.st.com>
---
Changes in v3:
- Drop 'dir' in 'GPIO dir flags' comment
Changes in v2:
- Swap newf and flags in sb_gpio_set_flags()
arch/sandbox/include/asm/gpio.h | 8 ++---
drivers/gpio/sandbox.c | 60 +++++++++++++++++++--------------
test/dm/gpio.c | 18 +++++-----
3 files changed, 47 insertions(+), 39 deletions(-)
diff --git a/arch/sandbox/include/asm/gpio.h b/arch/sandbox/include/asm/gpio.h
index df4ba4fb5f3..20d78296551 100644
--- a/arch/sandbox/include/asm/gpio.h
+++ b/arch/sandbox/include/asm/gpio.h
@@ -69,17 +69,17 @@ int sandbox_gpio_set_direction(struct udevice *dev, unsigned int offset,
* @param offset GPIO offset within bank
* @return dir_flags: bitfield accesses by GPIOD_ defines
*/
-ulong sandbox_gpio_get_dir_flags(struct udevice *dev, unsigned int offset);
+ulong sandbox_gpio_get_flags(struct udevice *dev, unsigned int offset);
/**
* Set the simulated flags of a GPIO (used only in sandbox test code)
*
* @param dev device to use
* @param offset GPIO offset within bank
- * @param flags dir_flags: bitfield accesses by GPIOD_ defines
+ * @param flags bitfield accesses by GPIOD_ defines
* @return -1 on error, 0 if ok
*/
-int sandbox_gpio_set_dir_flags(struct udevice *dev, unsigned int offset,
- ulong flags);
+int sandbox_gpio_set_flags(struct udevice *dev, unsigned int offset,
+ ulong flags);
#endif
diff --git a/drivers/gpio/sandbox.c b/drivers/gpio/sandbox.c
index 38dc34ee910..6f2eed50bf1 100644
--- a/drivers/gpio/sandbox.c
+++ b/drivers/gpio/sandbox.c
@@ -22,34 +22,44 @@
struct gpio_state {
const char *label; /* label given by requester */
- ulong dir_flags; /* dir_flags (GPIOD_...) */
+ ulong flags; /* flags (GPIOD_...) */
};
-/* Access routines for GPIO dir flags */
-static ulong *get_gpio_dir_flags(struct udevice *dev, unsigned int offset)
+/* Access routines for GPIO info */
+static struct gpio_state *get_gpio_state(struct udevice *dev, uint offset)
{
struct gpio_dev_priv *uc_priv = dev_get_uclass_priv(dev);
struct gpio_state *state = dev_get_priv(dev);
if (offset >= uc_priv->gpio_count) {
- static ulong invalid_dir_flags;
printf("sandbox_gpio: error: invalid gpio %u\n", offset);
- return &invalid_dir_flags;
+ return NULL;
}
- return &state[offset].dir_flags;
+ return &state[offset];
+}
+
+/* Access routines for GPIO flags */
+static ulong *get_gpio_flags(struct udevice *dev, unsigned int offset)
+{
+ struct gpio_state *state = get_gpio_state(dev, offset);
+
+ if (!state)
+ return NULL;
+
+ return &state->flags;
}
static int get_gpio_flag(struct udevice *dev, unsigned int offset, ulong flag)
{
- return (*get_gpio_dir_flags(dev, offset) & flag) != 0;
+ return (*get_gpio_flags(dev, offset) & flag) != 0;
}
static int set_gpio_flag(struct udevice *dev, unsigned int offset, ulong flag,
int value)
{
- ulong *gpio = get_gpio_dir_flags(dev, offset);
+ ulong *gpio = get_gpio_flags(dev, offset);
if (value)
*gpio |= flag;
@@ -88,15 +98,14 @@ int sandbox_gpio_set_direction(struct udevice *dev, unsigned offset, int output)
return 0;
}
-ulong sandbox_gpio_get_dir_flags(struct udevice *dev, unsigned int offset)
+ulong sandbox_gpio_get_flags(struct udevice *dev, uint offset)
{
- return *get_gpio_dir_flags(dev, offset);
+ return *get_gpio_flags(dev, offset);
}
-int sandbox_gpio_set_dir_flags(struct udevice *dev, unsigned int offset,
- ulong flags)
+int sandbox_gpio_set_flags(struct udevice *dev, uint offset, ulong flags)
{
- *get_gpio_dir_flags(dev, offset) = flags;
+ *get_gpio_flags(dev, offset) = flags;
return 0;
}
@@ -180,30 +189,29 @@ static int sb_gpio_xlate(struct udevice *dev, struct gpio_desc *desc,
static int sb_gpio_set_flags(struct udevice *dev, unsigned int offset,
ulong flags)
{
- ulong *dir_flags;
+ ulong *newf;
- debug("%s: offset:%u, dir_flags = %lx\n", __func__, offset, flags);
+ debug("%s: offset:%u, flags = %lx\n", __func__, offset, flags);
- dir_flags = get_gpio_dir_flags(dev, offset);
+ newf = get_gpio_flags(dev, offset);
/*
* For testing purposes keep the output value when switching to input.
* This allows us to manipulate the input value via the gpio command.
*/
if (flags & GPIOD_IS_IN)
- *dir_flags = (flags & ~GPIOD_IS_OUT_ACTIVE) |
- (*dir_flags & GPIOD_IS_OUT_ACTIVE);
+ *newf = (flags & ~GPIOD_IS_OUT_ACTIVE) |
+ (*newf & GPIOD_IS_OUT_ACTIVE);
else
- *dir_flags = flags;
+ *newf = flags;
return 0;
}
-static int sb_gpio_get_flags(struct udevice *dev, unsigned int offset,
- ulong *flagsp)
+static int sb_gpio_get_flags(struct udevice *dev, uint offset, ulong *flagsp)
{
debug("%s: offset:%u\n", __func__, offset);
- *flagsp = *get_gpio_dir_flags(dev, offset);
+ *flagsp = *get_gpio_flags(dev, offset);
return 0;
}
@@ -456,7 +464,7 @@ static const char *sb_pinctrl_get_pin_name(struct udevice *dev,
return pin_name;
}
-static char *get_dir_flags_string(ulong flags)
+static char *get_flags_string(ulong flags)
{
if (flags & GPIOD_OPEN_DRAIN)
return "drive-open-drain";
@@ -475,7 +483,7 @@ static int sb_pinctrl_get_pin_muxing(struct udevice *dev,
{
struct udevice *gpio_dev;
unsigned int gpio_idx;
- ulong dir_flags;
+ ulong flags;
int function;
/* look up for the bank which owns the requested pin */
@@ -484,11 +492,11 @@ static int sb_pinctrl_get_pin_muxing(struct udevice *dev,
snprintf(buf, size, "Error");
} else {
function = sb_gpio_get_function(gpio_dev, gpio_idx);
- dir_flags = *get_gpio_dir_flags(gpio_dev, gpio_idx);
+ flags = *get_gpio_flags(gpio_dev, gpio_idx);
snprintf(buf, size, "gpio %s %s",
function == GPIOF_OUTPUT ? "output" : "input",
- get_dir_flags_string(dir_flags));
+ get_flags_string(flags));
}
return 0;
diff --git a/test/dm/gpio.c b/test/dm/gpio.c
index c583d2b3447..dfbb634bf71 100644
--- a/test/dm/gpio.c
+++ b/test/dm/gpio.c
@@ -80,15 +80,15 @@ static int dm_test_gpio(struct unit_test_state *uts)
/* Make it an open drain output, and reset it */
ut_asserteq(GPIOD_IS_OUT | GPIOD_IS_OUT_ACTIVE,
- sandbox_gpio_get_dir_flags(dev, offset));
+ sandbox_gpio_get_flags(dev, offset));
ut_assertok(ops->set_flags(dev, offset,
GPIOD_IS_OUT | GPIOD_OPEN_DRAIN));
ut_asserteq(GPIOD_IS_OUT | GPIOD_OPEN_DRAIN,
- sandbox_gpio_get_dir_flags(dev, offset));
+ sandbox_gpio_get_flags(dev, offset));
ut_assertok(ops->set_flags(dev, offset,
GPIOD_IS_OUT | GPIOD_IS_OUT_ACTIVE));
ut_asserteq(GPIOD_IS_OUT | GPIOD_IS_OUT_ACTIVE,
- sandbox_gpio_get_dir_flags(dev, offset));
+ sandbox_gpio_get_flags(dev, offset));
/* Make it an input */
ut_assertok(ops->direction_input(dev, offset));
@@ -176,7 +176,7 @@ static int dm_test_gpio_opendrain_opensource(struct unit_test_state *uts)
/* GPIO 0 is (GPIO_OUT|GPIO_OPEN_DRAIN) */
ut_asserteq(GPIOD_IS_OUT | GPIOD_OPEN_DRAIN,
- sandbox_gpio_get_dir_flags(gpio_c, 0));
+ sandbox_gpio_get_flags(gpio_c, 0));
/* Set it as output high, should become an input */
ut_assertok(dm_gpio_set_value(&desc_list[0], 1));
@@ -190,7 +190,7 @@ static int dm_test_gpio_opendrain_opensource(struct unit_test_state *uts)
/* GPIO 1 is (GPIO_OUT|GPIO_OPEN_SOURCE) */
ut_asserteq(GPIOD_IS_OUT | GPIOD_OPEN_SOURCE,
- sandbox_gpio_get_dir_flags(gpio_c, 1));
+ sandbox_gpio_get_flags(gpio_c, 1));
/* Set it as output high, should become output high */
ut_assertok(dm_gpio_set_value(&desc_list[1], 1));
@@ -204,7 +204,7 @@ static int dm_test_gpio_opendrain_opensource(struct unit_test_state *uts)
/* GPIO 6 is (GPIO_ACTIVE_LOW|GPIO_OUT|GPIO_OPEN_DRAIN) */
ut_asserteq(GPIOD_ACTIVE_LOW | GPIOD_IS_OUT | GPIOD_OPEN_DRAIN,
- sandbox_gpio_get_dir_flags(gpio_c, 6));
+ sandbox_gpio_get_flags(gpio_c, 6));
/* Set it as output high, should become output low */
ut_assertok(dm_gpio_set_value(&desc_list[6], 1));
@@ -218,7 +218,7 @@ static int dm_test_gpio_opendrain_opensource(struct unit_test_state *uts)
/* GPIO 7 is (GPIO_ACTIVE_LOW|GPIO_OUT|GPIO_OPEN_SOURCE) */
ut_asserteq(GPIOD_ACTIVE_LOW | GPIOD_IS_OUT | GPIOD_OPEN_SOURCE,
- sandbox_gpio_get_dir_flags(gpio_c, 7));
+ sandbox_gpio_get_flags(gpio_c, 7));
/* Set it as output high, should become an input */
ut_assertok(dm_gpio_set_value(&desc_list[7], 1));
@@ -363,12 +363,12 @@ static int dm_test_gpio_phandles(struct unit_test_state *uts)
ut_assertok(gpio_free_list(dev, desc_list, 3));
ut_asserteq(GPIOD_IS_OUT | GPIOD_IS_OUT_ACTIVE,
- sandbox_gpio_get_dir_flags(gpio_a, 1));
+ sandbox_gpio_get_flags(gpio_a, 1));
ut_asserteq(6, gpio_request_list_by_name(dev, "test2-gpios", desc_list,
ARRAY_SIZE(desc_list), 0));
/* This was set to output previously but flags resetted to 0 = INPUT */
- ut_asserteq(0, sandbox_gpio_get_dir_flags(gpio_a, 1));
+ ut_asserteq(0, sandbox_gpio_get_flags(gpio_a, 1));
ut_asserteq(GPIOF_INPUT, gpio_get_function(gpio_a, 1, NULL));
/* Active low should invert the input value */
--
2.30.0.280.ga3ce27912f-goog
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