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-rw-r--r--test/dm/Makefile1
-rw-r--r--test/dm/cmd_dm.c103
-rw-r--r--test/dm/i2c.c216
-rw-r--r--test/dm/test.dts17
4 files changed, 286 insertions, 51 deletions
diff --git a/test/dm/Makefile b/test/dm/Makefile
index 75d3d41..612aa95 100644
--- a/test/dm/Makefile
+++ b/test/dm/Makefile
@@ -20,4 +20,5 @@ ifneq ($(CONFIG_SANDBOX),)
obj-$(CONFIG_DM_GPIO) += gpio.o
obj-$(CONFIG_DM_SPI) += spi.o
obj-$(CONFIG_DM_SPI_FLASH) += sf.o
+obj-$(CONFIG_DM_I2C) += i2c.o
endif
diff --git a/test/dm/cmd_dm.c b/test/dm/cmd_dm.c
index 26980d2..79a674e 100644
--- a/test/dm/cmd_dm.c
+++ b/test/dm/cmd_dm.c
@@ -16,17 +16,65 @@
#include <dm/test.h>
#include <dm/uclass-internal.h>
+static void show_devices(struct udevice *dev, int depth, int last_flag)
+{
+ int i, is_last;
+ struct udevice *child;
+ char class_name[12];
+
+ /* print the first 11 characters to not break the tree-format. */
+ strlcpy(class_name, dev->uclass->uc_drv->name, sizeof(class_name));
+ printf(" %-11s [ %c ] ", class_name,
+ dev->flags & DM_FLAG_ACTIVATED ? '+' : ' ');
+
+ for (i = depth; i >= 0; i--) {
+ is_last = (last_flag >> i) & 1;
+ if (i) {
+ if (is_last)
+ printf(" ");
+ else
+ printf("| ");
+ } else {
+ if (is_last)
+ printf("`-- ");
+ else
+ printf("|-- ");
+ }
+ }
+
+ printf("%s\n", dev->name);
+
+ list_for_each_entry(child, &dev->child_head, sibling_node) {
+ is_last = list_is_last(&child->sibling_node, &dev->child_head);
+ show_devices(child, depth + 1, (last_flag << 1) | is_last);
+ }
+}
+
+static int do_dm_dump_all(cmd_tbl_t *cmdtp, int flag, int argc,
+ char * const argv[])
+{
+ struct udevice *root;
+
+ root = dm_root();
+ if (root) {
+ printf(" Class Probed Name\n");
+ printf("----------------------------------------\n");
+ show_devices(root, -1, 0);
+ }
+
+ return 0;
+}
+
/**
* dm_display_line() - Display information about a single device
*
* Displays a single line of information with an option prefix
*
* @dev: Device to display
- * @buf: Prefix to display at the start of the line
*/
-static void dm_display_line(struct udevice *dev, char *buf)
+static void dm_display_line(struct udevice *dev)
{
- printf("%s- %c %s @ %08lx", buf,
+ printf("- %c %s @ %08lx",
dev->flags & DM_FLAG_ACTIVATED ? '*' : ' ',
dev->name, (ulong)map_to_sysmem(dev));
if (dev->req_seq != -1)
@@ -34,53 +82,6 @@ static void dm_display_line(struct udevice *dev, char *buf)
puts("\n");
}
-static int display_succ(struct udevice *in, char *buf)
-{
- int len;
- int ip = 0;
- char local[16];
- struct udevice *pos, *n, *prev = NULL;
-
- dm_display_line(in, buf);
-
- if (list_empty(&in->child_head))
- return 0;
-
- len = strlen(buf);
- strncpy(local, buf, sizeof(local));
- snprintf(local + len, 2, "|");
- if (len && local[len - 1] == '`')
- local[len - 1] = ' ';
-
- list_for_each_entry_safe(pos, n, &in->child_head, sibling_node) {
- if (ip++)
- display_succ(prev, local);
- prev = pos;
- }
-
- snprintf(local + len, 2, "`");
- display_succ(prev, local);
-
- return 0;
-}
-
-static int dm_dump(struct udevice *dev)
-{
- if (!dev)
- return -EINVAL;
- return display_succ(dev, "");
-}
-
-static int do_dm_dump_all(cmd_tbl_t *cmdtp, int flag, int argc,
- char * const argv[])
-{
- struct udevice *root;
-
- root = dm_root();
- printf("ROOT %08lx\n", (ulong)map_to_sysmem(root));
- return dm_dump(root);
-}
-
static int do_dm_dump_uclass(cmd_tbl_t *cmdtp, int flag, int argc,
char * const argv[])
{
@@ -99,7 +100,7 @@ static int do_dm_dump_uclass(cmd_tbl_t *cmdtp, int flag, int argc,
if (list_empty(&uc->dev_head))
continue;
list_for_each_entry(dev, &uc->dev_head, uclass_node) {
- dm_display_line(dev, "");
+ dm_display_line(dev);
}
puts("\n");
}
diff --git a/test/dm/i2c.c b/test/dm/i2c.c
new file mode 100644
index 0000000..a53e28d
--- /dev/null
+++ b/test/dm/i2c.c
@@ -0,0 +1,216 @@
+/*
+ * Copyright (C) 2013 Google, Inc
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ *
+ * Note: Test coverage does not include 10-bit addressing
+ */
+
+#include <common.h>
+#include <dm.h>
+#include <fdtdec.h>
+#include <i2c.h>
+#include <dm/device-internal.h>
+#include <dm/test.h>
+#include <dm/uclass-internal.h>
+#include <dm/ut.h>
+#include <dm/util.h>
+#include <asm/state.h>
+#include <asm/test.h>
+
+static const int busnum;
+static const int chip = 0x2c;
+
+/* Test that we can find buses and chips */
+static int dm_test_i2c_find(struct dm_test_state *dms)
+{
+ struct udevice *bus, *dev;
+ const int no_chip = 0x10;
+
+ ut_asserteq(-ENODEV, uclass_find_device_by_seq(UCLASS_I2C, busnum,
+ false, &bus));
+
+ /*
+ * i2c_post_bind() will bind devices to chip selects. Check this then
+ * remove the emulation and the slave device.
+ */
+ ut_assertok(uclass_get_device_by_seq(UCLASS_I2C, busnum, &bus));
+ ut_assertok(i2c_probe(bus, chip, 0, &dev));
+ ut_asserteq(-ENODEV, i2c_probe(bus, no_chip, 0, &dev));
+ ut_asserteq(-ENODEV, uclass_get_device_by_seq(UCLASS_I2C, 1, &bus));
+
+ return 0;
+}
+DM_TEST(dm_test_i2c_find, DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT);
+
+static int dm_test_i2c_read_write(struct dm_test_state *dms)
+{
+ struct udevice *bus, *dev;
+ uint8_t buf[5];
+
+ ut_assertok(uclass_get_device_by_seq(UCLASS_I2C, busnum, &bus));
+ ut_assertok(i2c_get_chip(bus, chip, &dev));
+ ut_assertok(i2c_read(dev, 0, buf, 5));
+ ut_assertok(memcmp(buf, "\0\0\0\0\0", sizeof(buf)));
+ ut_assertok(i2c_write(dev, 2, (uint8_t *)"AB", 2));
+ ut_assertok(i2c_read(dev, 0, buf, 5));
+ ut_assertok(memcmp(buf, "\0\0AB\0", sizeof(buf)));
+
+ return 0;
+}
+DM_TEST(dm_test_i2c_read_write, DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT);
+
+static int dm_test_i2c_speed(struct dm_test_state *dms)
+{
+ struct udevice *bus, *dev;
+ uint8_t buf[5];
+
+ ut_assertok(uclass_get_device_by_seq(UCLASS_I2C, busnum, &bus));
+ ut_assertok(i2c_get_chip(bus, chip, &dev));
+ ut_assertok(i2c_set_bus_speed(bus, 100000));
+ ut_assertok(i2c_read(dev, 0, buf, 5));
+ ut_assertok(i2c_set_bus_speed(bus, 400000));
+ ut_asserteq(400000, i2c_get_bus_speed(bus));
+ ut_assertok(i2c_read(dev, 0, buf, 5));
+ ut_asserteq(-EINVAL, i2c_write(dev, 0, buf, 5));
+
+ return 0;
+}
+DM_TEST(dm_test_i2c_speed, DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT);
+
+static int dm_test_i2c_offset_len(struct dm_test_state *dms)
+{
+ struct udevice *bus, *dev;
+ uint8_t buf[5];
+
+ ut_assertok(uclass_get_device_by_seq(UCLASS_I2C, busnum, &bus));
+ ut_assertok(i2c_get_chip(bus, chip, &dev));
+ ut_assertok(i2c_set_chip_offset_len(dev, 1));
+ ut_assertok(i2c_read(dev, 0, buf, 5));
+
+ /* This is not supported by the uclass */
+ ut_asserteq(-EINVAL, i2c_set_chip_offset_len(dev, 5));
+
+ return 0;
+}
+DM_TEST(dm_test_i2c_offset_len, DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT);
+
+static int dm_test_i2c_probe_empty(struct dm_test_state *dms)
+{
+ struct udevice *bus, *dev;
+
+ ut_assertok(uclass_get_device_by_seq(UCLASS_I2C, busnum, &bus));
+ ut_assertok(i2c_probe(bus, SANDBOX_I2C_TEST_ADDR, 0, &dev));
+
+ return 0;
+}
+DM_TEST(dm_test_i2c_probe_empty, DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT);
+
+static int dm_test_i2c_bytewise(struct dm_test_state *dms)
+{
+ struct udevice *bus, *dev;
+ struct udevice *eeprom;
+ uint8_t buf[5];
+
+ ut_assertok(uclass_get_device_by_seq(UCLASS_I2C, busnum, &bus));
+ ut_assertok(i2c_get_chip(bus, chip, &dev));
+ ut_assertok(i2c_read(dev, 0, buf, 5));
+ ut_assertok(memcmp(buf, "\0\0\0\0\0", sizeof(buf)));
+
+ /* Tell the EEPROM to only read/write one register at a time */
+ ut_assertok(uclass_first_device(UCLASS_I2C_EMUL, &eeprom));
+ ut_assertnonnull(eeprom);
+ sandbox_i2c_eeprom_set_test_mode(eeprom, SIE_TEST_MODE_SINGLE_BYTE);
+
+ /* Now we only get the first byte - the rest will be 0xff */
+ ut_assertok(i2c_read(dev, 0, buf, 5));
+ ut_assertok(memcmp(buf, "\0\xff\xff\xff\xff", sizeof(buf)));
+
+ /* If we do a separate transaction for each byte, it works */
+ ut_assertok(i2c_set_chip_flags(dev, DM_I2C_CHIP_RD_ADDRESS));
+ ut_assertok(i2c_read(dev, 0, buf, 5));
+ ut_assertok(memcmp(buf, "\0\0\0\0\0", sizeof(buf)));
+
+ /* This will only write A */
+ ut_assertok(i2c_set_chip_flags(dev, 0));
+ ut_assertok(i2c_write(dev, 2, (uint8_t *)"AB", 2));
+ ut_assertok(i2c_read(dev, 0, buf, 5));
+ ut_assertok(memcmp(buf, "\0\xff\xff\xff\xff", sizeof(buf)));
+
+ /* Check that the B was ignored */
+ ut_assertok(i2c_set_chip_flags(dev, DM_I2C_CHIP_RD_ADDRESS));
+ ut_assertok(i2c_read(dev, 0, buf, 5));
+ ut_assertok(memcmp(buf, "\0\0A\0\0\0", sizeof(buf)));
+
+ /* Now write it again with the new flags, it should work */
+ ut_assertok(i2c_set_chip_flags(dev, DM_I2C_CHIP_WR_ADDRESS));
+ ut_assertok(i2c_write(dev, 2, (uint8_t *)"AB", 2));
+ ut_assertok(i2c_read(dev, 0, buf, 5));
+ ut_assertok(memcmp(buf, "\0\xff\xff\xff\xff", sizeof(buf)));
+
+ ut_assertok(i2c_set_chip_flags(dev, DM_I2C_CHIP_WR_ADDRESS |
+ DM_I2C_CHIP_RD_ADDRESS));
+ ut_assertok(i2c_read(dev, 0, buf, 5));
+ ut_assertok(memcmp(buf, "\0\0AB\0\0", sizeof(buf)));
+
+ /* Restore defaults */
+ sandbox_i2c_eeprom_set_test_mode(eeprom, SIE_TEST_MODE_NONE);
+ ut_assertok(i2c_set_chip_flags(dev, 0));
+
+ return 0;
+}
+DM_TEST(dm_test_i2c_bytewise, DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT);
+
+static int dm_test_i2c_offset(struct dm_test_state *dms)
+{
+ struct udevice *eeprom;
+ struct udevice *dev;
+ uint8_t buf[5];
+
+ ut_assertok(i2c_get_chip_for_busnum(busnum, chip, &dev));
+
+ /* Do a transfer so we can find the emulator */
+ ut_assertok(i2c_read(dev, 0, buf, 5));
+ ut_assertok(uclass_first_device(UCLASS_I2C_EMUL, &eeprom));
+
+ /* Offset length 0 */
+ sandbox_i2c_eeprom_set_offset_len(eeprom, 0);
+ ut_assertok(i2c_set_chip_offset_len(dev, 0));
+ ut_assertok(i2c_write(dev, 10 /* ignored */, (uint8_t *)"AB", 2));
+ ut_assertok(i2c_read(dev, 0, buf, 5));
+ ut_assertok(memcmp(buf, "AB\0\0\0\0", sizeof(buf)));
+
+ /* Offset length 1 */
+ sandbox_i2c_eeprom_set_offset_len(eeprom, 1);
+ ut_assertok(i2c_set_chip_offset_len(dev, 1));
+ ut_assertok(i2c_write(dev, 2, (uint8_t *)"AB", 2));
+ ut_assertok(i2c_read(dev, 0, buf, 5));
+ ut_assertok(memcmp(buf, "ABAB\0", sizeof(buf)));
+
+ /* Offset length 2 */
+ sandbox_i2c_eeprom_set_offset_len(eeprom, 2);
+ ut_assertok(i2c_set_chip_offset_len(dev, 2));
+ ut_assertok(i2c_write(dev, 0x210, (uint8_t *)"AB", 2));
+ ut_assertok(i2c_read(dev, 0x210, buf, 5));
+ ut_assertok(memcmp(buf, "AB\0\0\0", sizeof(buf)));
+
+ /* Offset length 3 */
+ sandbox_i2c_eeprom_set_offset_len(eeprom, 2);
+ ut_assertok(i2c_set_chip_offset_len(dev, 2));
+ ut_assertok(i2c_write(dev, 0x410, (uint8_t *)"AB", 2));
+ ut_assertok(i2c_read(dev, 0x410, buf, 5));
+ ut_assertok(memcmp(buf, "AB\0\0\0", sizeof(buf)));
+
+ /* Offset length 4 */
+ sandbox_i2c_eeprom_set_offset_len(eeprom, 2);
+ ut_assertok(i2c_set_chip_offset_len(dev, 2));
+ ut_assertok(i2c_write(dev, 0x420, (uint8_t *)"AB", 2));
+ ut_assertok(i2c_read(dev, 0x420, buf, 5));
+ ut_assertok(memcmp(buf, "AB\0\0\0", sizeof(buf)));
+
+ /* Restore defaults */
+ sandbox_i2c_eeprom_set_offset_len(eeprom, 1);
+
+ return 0;
+}
+DM_TEST(dm_test_i2c_offset, DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT);
diff --git a/test/dm/test.dts b/test/dm/test.dts
index 1fba792..fb0272a 100644
--- a/test/dm/test.dts
+++ b/test/dm/test.dts
@@ -93,6 +93,23 @@
num-gpios = <10>;
};
+ i2c@0 {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ reg = <0>;
+ compatible = "sandbox,i2c";
+ clock-frequency = <100000>;
+ eeprom@2c {
+ reg = <0x2c>;
+ compatible = "i2c-eeprom";
+ emul {
+ compatible = "sandbox,i2c-eeprom";
+ sandbox,filename = "i2c.bin";
+ sandbox,size = <256>;
+ };
+ };
+ };
+
spi@0 {
#address-cells = <1>;
#size-cells = <0>;