[U-Boot] [PATCH v1 4/4] test: Add tests for the multiplexer framework
Jean-Jacques Hiblot
jjhiblot at ti.com
Wed Oct 2 12:47:49 UTC 2019
Provide tests to check the behavior of the multiplexer framework.
The test uses a mmio-based multiplexer.
Signed-off-by: Jean-Jacques Hiblot <jjhiblot at ti.com>
---
arch/sandbox/dts/test.dts | 26 +++++++
configs/sandbox_defconfig | 2 +
test/dm/Makefile | 1 +
test/dm/mux-mmio.c | 143 ++++++++++++++++++++++++++++++++++++++
4 files changed, 172 insertions(+)
create mode 100644 test/dm/mux-mmio.c
diff --git a/arch/sandbox/dts/test.dts b/arch/sandbox/dts/test.dts
index 044895586a..a502dc8bd7 100644
--- a/arch/sandbox/dts/test.dts
+++ b/arch/sandbox/dts/test.dts
@@ -1,3 +1,5 @@
+#include <dt-bindings/mux/mux.h>
+
/dts-v1/;
/ {
@@ -89,6 +91,11 @@
<&gpio_b 9 0xc 3 2 1>;
int-value = <1234>;
uint-value = <(-1234)>;
+
+ mux-controls = <&muxcontroller0 0>, <&muxcontroller0 1>,
+ <&muxcontroller0 2>, <&muxcontroller0 3>;
+ mux-control-names = "mux0", "mux1", "mux2", "mux3";
+ mux-syscon = <&syscon3>;
};
junk {
@@ -125,6 +132,9 @@
compatible = "denx,u-boot-fdt-test";
ping-expect = <3>;
ping-add = <3>;
+
+ mux-controls = <&muxcontroller0 0>;
+ mux-control-names = "mux0";
};
phy_provider0: gen_phy at 0 {
@@ -640,6 +650,22 @@
0x58 8>;
};
+ syscon3: syscon at 3 {
+ compatible = "simple-mfd", "syscon";
+ reg = <0x000100 0x10>;
+
+ muxcontroller0: a-mux-controller {
+ compatible = "mmio-mux";
+ #mux-control-cells = <1>;
+
+ mux-reg-masks = <0x0 0x30>, /* 0: reg 0x0, bits 5:4 */
+ <0x3 0x1E>, /* 1: reg 0x3, bits 4:1 */
+ <0x1 0xFF>; /* 2: reg 0x1, bits 7:0 */
+ idle-states = <MUX_IDLE_AS_IS>, <0x02>, <0x73>;
+ u-boot,mux-autoprobe;
+ };
+ };
+
timer {
compatible = "sandbox,timer";
clock-frequency = <1000000>;
diff --git a/configs/sandbox_defconfig b/configs/sandbox_defconfig
index f77b9e8a7d..aa5d89dfc2 100644
--- a/configs/sandbox_defconfig
+++ b/configs/sandbox_defconfig
@@ -143,6 +143,8 @@ CONFIG_SPI_FLASH_SPANSION=y
CONFIG_SPI_FLASH_STMICRO=y
CONFIG_SPI_FLASH_SST=y
CONFIG_SPI_FLASH_WINBOND=y
+CONFIG_MULTIPLEXER=y
+CONFIG_MUX_MMIO=y
CONFIG_DM_ETH=y
CONFIG_NVME=y
CONFIG_PCI=y
diff --git a/test/dm/Makefile b/test/dm/Makefile
index 55a7940053..5fedcb8a7a 100644
--- a/test/dm/Makefile
+++ b/test/dm/Makefile
@@ -46,6 +46,7 @@ obj-$(CONFIG_DM_SPI_FLASH) += sf.o
obj-$(CONFIG_SMEM) += smem.o
obj-$(CONFIG_DM_SPI) += spi.o
obj-y += syscon.o
+obj-$(CONFIG_MUX_MMIO) += mux-mmio.o
obj-$(CONFIG_DM_USB) += usb.o
obj-$(CONFIG_DM_PMIC) += pmic.o
obj-$(CONFIG_DM_REGULATOR) += regulator.o
diff --git a/test/dm/mux-mmio.c b/test/dm/mux-mmio.c
new file mode 100644
index 0000000000..8a19281614
--- /dev/null
+++ b/test/dm/mux-mmio.c
@@ -0,0 +1,143 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2017-2018 Texas Instruments Incorporated - http://www.ti.com/
+ * Jean-Jacques Hiblot <jjhiblot at ti.com>
+ */
+
+#include <common.h>
+#include <fdtdec.h>
+#include <dm.h>
+#include <mux.h>
+#include <regmap.h>
+#include <syscon.h>
+#include <asm/test.h>
+#include <dm/root.h>
+#include <dm/test.h>
+#include <dm/util.h>
+#include <test/ut.h>
+
+/* Test that mmio mux work correctly */
+static int dm_test_mux_mmio(struct unit_test_state *uts)
+{
+ struct udevice *dev, *dev_b;
+ struct regmap *map;
+ struct mux_control *ctl0_a, *ctl0_b;
+ struct mux_control *ctl1;
+ struct mux_control *ctl_err;
+ u32 val;
+ int i;
+
+ ut_assertok(uclass_get_device(UCLASS_TEST_FDT, 0, &dev));
+ ut_assertok(uclass_get_device(UCLASS_TEST_FDT, 1, &dev_b));
+ ut_asserteq_str("a-test", dev->name);
+ ut_asserteq_str("b-test", dev_b->name);
+ map = syscon_regmap_lookup_by_phandle(dev, "mux-syscon");
+ ut_assert(!IS_ERR(map));
+ ut_assert(map);
+
+ /* check default states */
+ ut_assertok(regmap_read(map, 3, &val));
+ ut_asserteq(0x02, (val & 0x1E) >> 1);
+ ut_assertok(regmap_read(map, 1, &val));
+ ut_asserteq(0x73, (val & 0xFF) >> 0);
+
+ ut_assertok(mux_control_get(dev, "mux0", &ctl0_a));
+ ut_assertok(mux_control_get(dev, "mux1", &ctl1));
+ ut_asserteq(-ERANGE, mux_control_get(dev, "mux3", &ctl_err));
+ ut_asserteq(-ENODATA, mux_control_get(dev, "dummy", &ctl_err));
+ ut_assertok(mux_control_get(dev_b, "mux0", &ctl0_b));
+
+ for (i = 0; i < mux_control_states(ctl0_a); i++) {
+ /* select a new state and verify the value in the regmap */
+ ut_assertok(mux_control_select(ctl0_a, i));
+ ut_assertok(regmap_read(map, 0, &val));
+ ut_asserteq(i, (val & 0x30) >> 4);
+ /*
+ * deselect the mux and verify that the value in the regmap
+ * reflects the idle state (fixed to MUX_IDLE_AS_IS)
+ */
+ ut_assertok(mux_control_deselect(ctl0_a));
+ ut_assertok(regmap_read(map, 0, &val));
+ ut_asserteq(i, (val & 0x30) >> 4);
+ }
+
+ for (i = 0; i < mux_control_states(ctl1); i++) {
+ /* select a new state and verify the value in the regmap */
+ ut_assertok(mux_control_select(ctl1, i));
+ ut_assertok(regmap_read(map, 3, &val));
+ ut_asserteq(i, (val & 0x1E) >> 1);
+ /*
+ * deselect the mux and verify that the value in the regmap
+ * reflects the idle state (fixed to 2)
+ */
+ ut_assertok(mux_control_deselect(ctl1));
+ ut_assertok(regmap_read(map, 3, &val));
+ ut_asserteq(2, (val & 0x1E) >> 1);
+ }
+
+ // try unbalanced selection/deselection
+ ut_assertok(mux_control_select(ctl0_a, 0));
+ ut_asserteq(-EBUSY, mux_control_select(ctl0_a, 1));
+ ut_asserteq(-EBUSY, mux_control_select(ctl0_a, 0));
+ ut_assertok(mux_control_deselect(ctl0_a));
+
+ // try concurent selection
+ ut_assertok(mux_control_select(ctl0_a, 0));
+ ut_assert(mux_control_select(ctl0_b, 0));
+ ut_assertok(mux_control_deselect(ctl0_a));
+ ut_assertok(mux_control_select(ctl0_b, 0));
+ ut_assert(mux_control_select(ctl0_a, 0));
+ ut_assertok(mux_control_deselect(ctl0_b));
+ ut_assertok(mux_control_select(ctl0_a, 0));
+ ut_assertok(mux_control_deselect(ctl0_a));
+
+ return 0;
+}
+DM_TEST(dm_test_mux_mmio, DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT);
+
+/* Test that managed API for mux work correctly */
+static int dm_test_devm_mux_mmio(struct unit_test_state *uts)
+{
+ struct udevice *dev, *dev_b;
+ struct mux_control *ctl0_a, *ctl0_b;
+ struct mux_control *ctl1;
+ struct mux_control *ctl_err;
+
+ ut_assertok(uclass_get_device(UCLASS_TEST_FDT, 0, &dev));
+ ut_assertok(uclass_get_device(UCLASS_TEST_FDT, 1, &dev_b));
+ ut_asserteq_str("a-test", dev->name);
+ ut_asserteq_str("b-test", dev_b->name);
+
+ ctl0_a = devm_mux_control_get(dev, "mux0");
+ ut_assertok(IS_ERR(ctl0_a));
+ ut_assert(ctl0_a);
+ ctl1 = devm_mux_control_get(dev, "mux1");
+ ut_assertok(IS_ERR(ctl1));
+ ut_assert(ctl1);
+ ctl_err = devm_mux_control_get(dev, "mux3");
+ ut_asserteq(-ERANGE, PTR_ERR(ctl_err));
+ ctl_err = devm_mux_control_get(dev, "dummy");
+ ut_asserteq(-ENODATA, PTR_ERR(ctl_err));
+
+ ctl0_b = devm_mux_control_get(dev_b, "mux0");
+ ut_assertok(IS_ERR(ctl0_b));
+ ut_assert(ctl0_b);
+
+ /* try concurent selection */
+ ut_assertok(mux_control_select(ctl0_a, 0));
+ ut_assert(mux_control_select(ctl0_b, 0));
+ ut_assertok(mux_control_deselect(ctl0_a));
+ ut_assertok(mux_control_select(ctl0_b, 0));
+ ut_assert(mux_control_select(ctl0_a, 0));
+ ut_assertok(mux_control_deselect(ctl0_b));
+
+ /* removed one device and check that the mux is released */
+ ut_assertok(mux_control_select(ctl0_a, 0));
+ ut_assert(mux_control_select(ctl0_b, 0));
+ device_remove(dev, DM_REMOVE_NORMAL);
+ ut_assertok(mux_control_select(ctl0_b, 0));
+
+ device_remove(dev_b, DM_REMOVE_NORMAL);
+ return 0;
+}
+DM_TEST(dm_test_devm_mux_mmio, DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT);
--
2.17.1
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