[PATCH v4 5/7] test: Add tests for the multiplexer framework
Pratyush Yadav
p.yadav at ti.com
Fri Oct 16 12:46:34 CEST 2020
From: Jean-Jacques Hiblot <jjhiblot at ti.com>
Provide tests to check the behavior of the multiplexer framework.
Two sets of tests are added. One is using an emulated multiplexer driver
that can be used to test basic functionality like select, deselect, etc.
The other is using the mmio mux which adds tests specific to it.
Signed-off-by: Jean-Jacques Hiblot <jjhiblot at ti.com>
Signed-off-by: Pratyush Yadav <p.yadav at ti.com>
---
Notes:
Changes in v4:
- Add an emulated mux driver that makes it easier to test some basic
functionality. It is used to test basic things like setting default
state, and simple set/unset functionality. The MMIO test is still kept
around for testing the mmio mux driver.
- Add a node for the emulated mux driver in test.dts
- Drop dm_test_mux_mmio_default_state(). This functionality is
exercised by the emulated mux test.
- Drop some unused includes from mux-mmio.c
- s/DM_TESTF/UT_TESTF/g
arch/sandbox/dts/test.dts | 33 +++++++++
configs/sandbox_defconfig | 2 +
test/dm/Makefile | 2 +
test/dm/mux-emul.c | 105 +++++++++++++++++++++++++++++
test/dm/mux-mmio.c | 138 ++++++++++++++++++++++++++++++++++++++
5 files changed, 280 insertions(+)
create mode 100644 test/dm/mux-emul.c
create mode 100644 test/dm/mux-mmio.c
diff --git a/arch/sandbox/dts/test.dts b/arch/sandbox/dts/test.dts
index fa84b2c10f..70ccb4951a 100644
--- a/arch/sandbox/dts/test.dts
+++ b/arch/sandbox/dts/test.dts
@@ -3,6 +3,7 @@
#include <dt-bindings/gpio/gpio.h>
#include <dt-bindings/gpio/sandbox-gpio.h>
#include <dt-bindings/pinctrl/sandbox-pinmux.h>
+#include <dt-bindings/mux/mux.h>
/ {
model = "sandbox";
@@ -133,6 +134,12 @@
interrupts-extended = <&irq 3 0>;
acpi,name = "GHIJ";
phandle-value = <&gpio_c 10>, <0xFFFFFFFF 20>, <&gpio_a 30>;
+
+ mux-controls = <&muxcontroller0 0>, <&muxcontroller0 1>,
+ <&muxcontroller0 2>, <&muxcontroller0 3>,
+ <&muxcontroller1>;
+ mux-control-names = "mux0", "mux1", "mux2", "mux3", "mux4";
+ mux-syscon = <&syscon3>;
};
junk {
@@ -170,6 +177,9 @@
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 {
@@ -884,6 +894,29 @@
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 */
+ <0xc 0x1E>, /* 1: reg 0xc, bits 4:1 */
+ <0x4 0xFF>; /* 2: reg 0x4, bits 7:0 */
+ idle-states = <MUX_IDLE_AS_IS>, <0x02>, <0x73>;
+ u-boot,mux-autoprobe;
+ };
+ };
+
+ muxcontroller1: emul-mux-controller {
+ compatible = "mux-emul";
+ #mux-control-cells = <0>;
+ u-boot,mux-autoprobe;
+ idle-state = <0xabcd>;
+ };
+
timer at 0 {
compatible = "sandbox,timer";
clock-frequency = <1000000>;
diff --git a/configs/sandbox_defconfig b/configs/sandbox_defconfig
index 6ac2919977..f3c4883032 100644
--- a/configs/sandbox_defconfig
+++ b/configs/sandbox_defconfig
@@ -179,6 +179,8 @@ 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 e2b0798388..93484b48eb 100644
--- a/test/dm/Makefile
+++ b/test/dm/Makefile
@@ -57,6 +57,8 @@ 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-$(CONFIG_MULTIPLEXER) += mux-emul.o
obj-$(CONFIG_DM_USB) += usb.o
obj-$(CONFIG_DM_PMIC) += pmic.o
obj-$(CONFIG_DM_REGULATOR) += regulator.o
diff --git a/test/dm/mux-emul.c b/test/dm/mux-emul.c
new file mode 100644
index 0000000000..141fd4d908
--- /dev/null
+++ b/test/dm/mux-emul.c
@@ -0,0 +1,105 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2020 Texas Instruments Incorporated - http://www.ti.com/
+ * Pratyush Yadav <p.yadav at ti.com>
+ */
+#include <common.h>
+#include <dm.h>
+#include <mux.h>
+#include <mux-internal.h>
+#include <dm/test.h>
+#include <test/ut.h>
+
+struct mux_emul_priv {
+ u32 state;
+};
+
+static int mux_emul_set(struct mux_control *mux, int state)
+{
+ struct mux_emul_priv *priv = dev_get_priv(mux->dev);
+
+ priv->state = state;
+ return 0;
+}
+
+static int mux_emul_probe(struct udevice *dev)
+{
+ struct mux_chip *mux_chip = dev_get_uclass_priv(dev);
+ struct mux_control *mux;
+ u32 idle_state;
+ int ret;
+
+ ret = mux_alloc_controllers(dev, 1);
+ if (ret < 0)
+ return ret;
+
+ mux = &mux_chip->mux[0];
+
+ ret = dev_read_u32(dev, "idle-state", &idle_state);
+ if (ret)
+ return ret;
+
+ mux->idle_state = idle_state;
+ mux->states = 0x100000;
+
+ return 0;
+}
+
+static const struct mux_control_ops mux_emul_ops = {
+ .set = mux_emul_set,
+};
+
+static const struct udevice_id mux_emul_of_match[] = {
+ { .compatible = "mux-emul" },
+ { /* sentinel */ },
+};
+
+U_BOOT_DRIVER(emul_mux) = {
+ .name = "mux-emul",
+ .id = UCLASS_MUX,
+ .of_match = mux_emul_of_match,
+ .ops = &mux_emul_ops,
+ .probe = mux_emul_probe,
+ .priv_auto_alloc_size = sizeof(struct mux_emul_priv),
+};
+
+static int dm_test_mux_emul_default_state(struct unit_test_state *uts)
+{
+ struct udevice *dev;
+ struct mux_control *mux;
+ struct mux_emul_priv *priv;
+
+ ut_assertok(uclass_get_device_by_name(UCLASS_TEST_FDT, "a-test",
+ &dev));
+ ut_assertok(mux_control_get(dev, "mux4", &mux));
+
+ priv = dev_get_priv(mux->dev);
+
+ ut_asserteq(0xabcd, priv->state);
+
+ return 0;
+}
+DM_TEST(dm_test_mux_emul_default_state, UT_TESTF_SCAN_PDATA | UT_TESTF_SCAN_FDT);
+
+static int dm_test_mux_emul_select_deselect(struct unit_test_state *uts)
+{
+ struct udevice *dev;
+ struct mux_control *mux;
+ struct mux_emul_priv *priv;
+
+ gd->flags &= ~(GD_FLG_SILENT | GD_FLG_RECORD);
+ ut_assertok(uclass_get_device_by_name(UCLASS_TEST_FDT, "a-test",
+ &dev));
+ ut_assertok(mux_control_get(dev, "mux4", &mux));
+
+ priv = dev_get_priv(mux->dev);
+
+ ut_assertok(mux_control_select(mux, 0x1234));
+ ut_asserteq(priv->state, 0x1234);
+
+ ut_assertok(mux_control_deselect(mux));
+ ut_asserteq(priv->state, 0xabcd);
+
+ return 0;
+}
+DM_TEST(dm_test_mux_emul_select_deselect, UT_TESTF_SCAN_PDATA | UT_TESTF_SCAN_FDT);
diff --git a/test/dm/mux-mmio.c b/test/dm/mux-mmio.c
new file mode 100644
index 0000000000..fd353d8b15
--- /dev/null
+++ b/test/dm/mux-mmio.c
@@ -0,0 +1,138 @@
+// 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 <dm.h>
+#include <mux.h>
+#include <regmap.h>
+#include <syscon.h>
+#include <asm/test.h>
+#include <dm/test.h>
+#include <dm/device-internal.h>
+#include <test/ut.h>
+
+static int dm_test_mux_mmio_select(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;
+
+ sandbox_set_enable_memio(true);
+
+ ut_assertok(uclass_get_device_by_name(UCLASS_TEST_FDT, "a-test",
+ &dev));
+ ut_assertok(uclass_get_device_by_name(UCLASS_TEST_FDT, "b-test",
+ &dev_b));
+ map = syscon_regmap_lookup_by_phandle(dev, "mux-syscon");
+ ut_assertok_ptr(map);
+ ut_assert(map);
+
+ 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, 0xc, &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, 0xc, &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 concurrent 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_select, UT_TESTF_SCAN_PDATA | UT_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;
+
+ sandbox_set_enable_memio(true);
+
+ ut_assertok(uclass_get_device_by_name(UCLASS_TEST_FDT, "a-test",
+ &dev));
+ ut_assertok(uclass_get_device_by_name(UCLASS_TEST_FDT, "b-test",
+ &dev_b));
+
+ ctl0_a = devm_mux_control_get(dev, "mux0");
+ ut_assertok_ptr(ctl0_a);
+ ut_assert(ctl0_a);
+ ctl1 = devm_mux_control_get(dev, "mux1");
+ ut_assertok_ptr(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_ptr(ctl0_b);
+ ut_assert(ctl0_b);
+
+ /* Try concurrent 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));
+
+ /* Remove 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, UT_TESTF_SCAN_PDATA | UT_TESTF_SCAN_FDT);
--
2.28.0
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