diff options
| -rw-r--r-- | arch/sandbox/dts/test.dts | 2 | ||||
| -rw-r--r-- | drivers/core/read.c | 23 | ||||
| -rw-r--r-- | include/dm/read.h | 58 | ||||
| -rw-r--r-- | test/dm/test-fdt.c | 35 |
4 files changed, 118 insertions, 0 deletions
diff --git a/arch/sandbox/dts/test.dts b/arch/sandbox/dts/test.dts index 82bd91936a..3790b4c520 100644 --- a/arch/sandbox/dts/test.dts +++ b/arch/sandbox/dts/test.dts @@ -87,6 +87,8 @@ test2-gpios = <&gpio_a 1>, <&gpio_a 4>, <&gpio_b 6 1 3 2 1>, <&gpio_b 7 2 3 2 1>, <&gpio_b 8 4 3 2 1>, <&gpio_b 9 0xc 3 2 1>; + int-value = <1234>; + uint-value = <(-1234)>; }; junk { diff --git a/drivers/core/read.c b/drivers/core/read.c index cdd78be03e..3c46b3674e 100644 --- a/drivers/core/read.c +++ b/drivers/core/read.c @@ -21,6 +21,29 @@ int dev_read_u32_default(struct udevice *dev, const char *propname, int def) return ofnode_read_u32_default(dev_ofnode(dev), propname, def); } +int dev_read_s32(struct udevice *dev, const char *propname, s32 *outp) +{ + return ofnode_read_u32(dev_ofnode(dev), propname, (u32 *)outp); +} + +int dev_read_s32_default(struct udevice *dev, const char *propname, int def) +{ + return ofnode_read_u32_default(dev_ofnode(dev), propname, def); +} + +int dev_read_u32u(struct udevice *dev, const char *propname, uint *outp) +{ + u32 val; + int ret; + + ret = ofnode_read_u32(dev_ofnode(dev), propname, &val); + if (ret) + return ret; + *outp = val; + + return 0; +} + const char *dev_read_string(struct udevice *dev, const char *propname) { return ofnode_read_string(dev_ofnode(dev), propname); diff --git a/include/dm/read.h b/include/dm/read.h index efcbee15ec..389e30e7fb 100644 --- a/include/dm/read.h +++ b/include/dm/read.h @@ -65,6 +65,38 @@ int dev_read_u32(struct udevice *dev, const char *propname, u32 *outp); int dev_read_u32_default(struct udevice *dev, const char *propname, int def); /** + * dev_read_s32() - read a signed 32-bit integer from a device's DT property + * + * @dev: device to read DT property from + * @propname: name of the property to read from + * @outp: place to put value (if found) + * @return 0 if OK, -ve on error + */ +int dev_read_s32(struct udevice *dev, const char *propname, s32 *outp); + +/** + * dev_read_s32_default() - read a signed 32-bit int from a device's DT property + * + * @dev: device to read DT property from + * @propname: name of the property to read from + * @def: default value to return if the property has no value + * @return property value, or @def if not found + */ +int dev_read_s32_default(struct udevice *dev, const char *propname, int def); + +/** + * dev_read_u32u() - read a 32-bit integer from a device's DT property + * + * This version uses a standard uint type. + * + * @dev: device to read DT property from + * @propname: name of the property to read from + * @outp: place to put value (if found) + * @return 0 if OK, -ve on error + */ +int dev_read_u32u(struct udevice *dev, const char *propname, uint *outp); + +/** * dev_read_string() - Read a string from a device's DT property * * @dev: device to read DT property from @@ -492,6 +524,32 @@ static inline int dev_read_u32_default(struct udevice *dev, return ofnode_read_u32_default(dev_ofnode(dev), propname, def); } +static inline int dev_read_s32(struct udevice *dev, + const char *propname, s32 *outp) +{ + return ofnode_read_s32(dev_ofnode(dev), propname, outp); +} + +static inline int dev_read_s32_default(struct udevice *dev, + const char *propname, int def) +{ + return ofnode_read_s32_default(dev_ofnode(dev), propname, def); +} + +static inline int dev_read_u32u(struct udevice *dev, + const char *propname, uint *outp) +{ + u32 val; + int ret; + + ret = ofnode_read_u32(dev_ofnode(dev), propname, &val); + if (ret) + return ret; + *outp = val; + + return 0; +} + static inline const char *dev_read_string(struct udevice *dev, const char *propname) { diff --git a/test/dm/test-fdt.c b/test/dm/test-fdt.c index 96d2528acc..984b80c02c 100644 --- a/test/dm/test-fdt.c +++ b/test/dm/test-fdt.c @@ -736,3 +736,38 @@ static int dm_test_first_child(struct unit_test_state *uts) return 0; } DM_TEST(dm_test_first_child, DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT); + +/* Test integer functions in dm_read_...() */ +static int dm_test_read_int(struct unit_test_state *uts) +{ + struct udevice *dev; + u32 val32; + s32 sval; + uint val; + + ut_assertok(uclass_first_device_err(UCLASS_TEST_FDT, &dev)); + ut_asserteq_str("a-test", dev->name); + ut_assertok(dev_read_u32(dev, "int-value", &val32)); + ut_asserteq(1234, val32); + + ut_asserteq(-EINVAL, dev_read_u32(dev, "missing", &val32)); + ut_asserteq(6, dev_read_u32_default(dev, "missing", 6)); + + ut_asserteq(1234, dev_read_u32_default(dev, "int-value", 6)); + ut_asserteq(1234, val32); + + ut_asserteq(-EINVAL, dev_read_s32(dev, "missing", &sval)); + ut_asserteq(6, dev_read_s32_default(dev, "missing", 6)); + + ut_asserteq(-1234, dev_read_s32_default(dev, "uint-value", 6)); + ut_assertok(dev_read_s32(dev, "uint-value", &sval)); + ut_asserteq(-1234, sval); + + val = 0; + ut_asserteq(-EINVAL, dev_read_u32u(dev, "missing", &val)); + ut_assertok(dev_read_u32u(dev, "uint-value", &val)); + ut_asserteq(-1234, val); + + return 0; +} +DM_TEST(dm_test_read_int, DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT); |