mirrors/u-boot
0
0
Fork 0
mirror of https://github.com/u-boot/u-boot.git synced 2024-11-26 13:44:29 +08:00
Code Issues Packages Projects Releases Wiki Activity

Merge tag '20191217-for-next' of https://gitlab.denx.de/u-boot/custodians/u-boot-i2c into next

Browse Source 
i2c: for next
- misc: i2c_eeprom:
  Add partition support and add ability to query size
  of eeprom device and partitions
- i2c common:
  add support for offset overflow in to address and add
  sandbox tests for it.
This commit is contained in:
Tom Rini 2019-12-17 07:53:08 -05:00
commit 533c9f5714
7 changed files with 464 additions and 60 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
arch/sandbox/include/asm/test.h
View File

@ -72,6 +72,13 @@ void sandbox_i2c_eeprom_set_test_mode(struct udevice *dev,
void sandbox_i2c_eeprom_set_offset_len(struct udevice *dev, int offset_len);
void sandbox_i2c_eeprom_set_chip_addr_offset_mask(struct udevice *dev,
uint mask);
uint sanbox_i2c_eeprom_get_prev_addr(struct udevice *dev);
uint sanbox_i2c_eeprom_get_prev_offset(struct udevice *dev);
/**
* sandbox_i2c_rtc_set_offset() - set the time offset from system/base time
*

34
drivers/i2c/i2c-uclass.c
View File

@ -52,16 +52,19 @@ void i2c_dump_msgs(struct i2c_msg *msg, int nmsgs)
static int i2c_setup_offset(struct dm_i2c_chip *chip, uint offset,
uint8_t offset_buf[], struct i2c_msg *msg)
{
int offset_len;
int offset_len = chip->offset_len;
msg->addr = chip->chip_addr;
if (chip->chip_addr_offset_mask)
msg->addr |= (offset >> (8 * offset_len)) &
chip->chip_addr_offset_mask;
msg->flags = chip->flags & DM_I2C_CHIP_10BIT ? I2C_M_TEN : 0;
msg->len = chip->offset_len;
msg->buf = offset_buf;
if (!chip->offset_len)
if (!offset_len)
return -EADDRNOTAVAIL;
assert(chip->offset_len <= I2C_MAX_OFFSET_LEN);
offset_len = chip->offset_len;
assert(offset_len <= I2C_MAX_OFFSET_LEN);
while (offset_len--)
*offset_buf++ = offset >> (8 * offset_len);
@ -83,7 +86,7 @@ static int i2c_read_bytewise(struct udevice *dev, uint offset,
if (i2c_setup_offset(chip, offset + i, offset_buf, msg))
return -EINVAL;
ptr = msg + 1;
ptr->addr = chip->chip_addr;
ptr->addr = msg->addr;
ptr->flags = msg->flags | I2C_M_RD;
ptr->len = 1;
ptr->buf = &buffer[i];
@ -139,7 +142,7 @@ int dm_i2c_read(struct udevice *dev, uint offset, uint8_t *buffer, int len)
ptr++;
if (len) {
ptr->addr = chip->chip_addr;
ptr->addr = msg->addr;
ptr->flags = chip->flags & DM_I2C_CHIP_10BIT ? I2C_M_TEN : 0;
ptr->flags |= I2C_M_RD;
ptr->len = len;
@ -323,7 +326,8 @@ int i2c_get_chip(struct udevice *bus, uint chip_addr, uint offset_len,
struct dm_i2c_chip *chip = dev_get_parent_platdata(dev);
int ret;
if (chip->chip_addr == chip_addr) {
if (chip->chip_addr == (chip_addr &
~chip->chip_addr_offset_mask)) {
ret = device_probe(dev);
debug("found, ret=%d\n", ret);
if (ret)
@ -465,6 +469,22 @@ int i2c_get_chip_offset_len(struct udevice *dev)
return chip->offset_len;
}
int i2c_set_chip_addr_offset_mask(struct udevice *dev, uint mask)
{
struct dm_i2c_chip *chip = dev_get_parent_platdata(dev);
chip->chip_addr_offset_mask = mask;
return 0;
}
uint i2c_get_chip_addr_offset_mask(struct udevice *dev)
{
struct dm_i2c_chip *chip = dev_get_parent_platdata(dev);
return chip->chip_addr_offset_mask;
}
#ifdef CONFIG_DM_GPIO
static void i2c_gpio_set_pin(struct gpio_desc *pin, int bit)
{

243
drivers/misc/i2c_eeprom.c
View File

@ -8,9 +8,15 @@
#include <linux/err.h>
#include <linux/kernel.h>
#include <dm.h>
#include <dm/device-internal.h>
#include <i2c.h>
#include <i2c_eeprom.h>
struct i2c_eeprom_drv_data {
u32 size; /* size in bytes */
u32 pagewidth; /* pagesize = 2^pagewidth */
};
int i2c_eeprom_read(struct udevice *dev, int offset, uint8_t *buf, int size)
{
const struct i2c_eeprom_ops *ops = device_get_ops(dev);
@ -31,6 +37,16 @@ int i2c_eeprom_write(struct udevice *dev, int offset, uint8_t *buf, int size)
return ops->write(dev, offset, buf, size);
}
int i2c_eeprom_size(struct udevice *dev)
{
const struct i2c_eeprom_ops *ops = device_get_ops(dev);
if (!ops->size)
return -ENOSYS;
return ops->size(dev);
}
static int i2c_eeprom_std_read(struct udevice *dev, int offset, uint8_t *buf,
int size)
{
@ -60,25 +76,62 @@ static int i2c_eeprom_std_write(struct udevice *dev, int offset,
return 0;
}
static int i2c_eeprom_std_size(struct udevice *dev)
{
struct i2c_eeprom *priv = dev_get_priv(dev);
return priv->size;
}
static const struct i2c_eeprom_ops i2c_eeprom_std_ops = {
.read = i2c_eeprom_std_read,
.write = i2c_eeprom_std_write,
.size = i2c_eeprom_std_size,
};
static int i2c_eeprom_std_ofdata_to_platdata(struct udevice *dev)
{
struct i2c_eeprom *priv = dev_get_priv(dev);
u64 data = dev_get_driver_data(dev);
struct i2c_eeprom_drv_data *data =
(struct i2c_eeprom_drv_data *)dev_get_driver_data(dev);
u32 pagesize;
u32 size;
if (dev_read_u32(dev, "pagesize", &pagesize) == 0) {
priv->pagesize = pagesize;
return 0;
} else {
/* 6 bit -> page size of up to 2^63 (should be sufficient) */
priv->pagewidth = data->pagewidth;
priv->pagesize = (1 << priv->pagewidth);
}
/* 6 bit -> page size of up to 2^63 (should be sufficient) */
priv->pagewidth = data & 0x3F;
priv->pagesize = (1 << priv->pagewidth);
if (dev_read_u32(dev, "size", &size) == 0)
priv->size = size;
else
priv->size = data->size;
return 0;
}
static int i2c_eeprom_std_bind(struct udevice *dev)
{
ofnode partitions = ofnode_find_subnode(dev_ofnode(dev), "partitions");
ofnode partition;
const char *name;
if (!ofnode_valid(partitions))
return 0;
if (!ofnode_device_is_compatible(partitions, "fixed-partitions"))
return -ENOTSUPP;
ofnode_for_each_subnode(partition, partitions) {
name = ofnode_get_name(partition);
if (!name)
continue;
device_bind_ofnode(dev, DM_GET_DRIVER(i2c_eeprom_partition),
name, NULL, partition, NULL);
}
return 0;
}
@ -96,21 +149,91 @@ static int i2c_eeprom_std_probe(struct udevice *dev)
return 0;
}
static const struct i2c_eeprom_drv_data eeprom_data = {
.size = 0,
.pagewidth = 0,
};
static const struct i2c_eeprom_drv_data mc24aa02e48_data = {
.size = 256,
.pagewidth = 3,
};
static const struct i2c_eeprom_drv_data atmel24c01a_data = {
.size = 128,
.pagewidth = 3,
};
static const struct i2c_eeprom_drv_data atmel24c02_data = {
.size = 256,
.pagewidth = 3,
};
static const struct i2c_eeprom_drv_data atmel24c04_data = {
.size = 512,
.pagewidth = 4,
};
static const struct i2c_eeprom_drv_data atmel24c08_data = {
.size = 1024,
.pagewidth = 4,
};
static const struct i2c_eeprom_drv_data atmel24c08a_data = {
.size = 1024,
.pagewidth = 4,
};
static const struct i2c_eeprom_drv_data atmel24c16a_data = {
.size = 2048,
.pagewidth = 4,
};
static const struct i2c_eeprom_drv_data atmel24mac402_data = {
.size = 256,
.pagewidth = 4,
};
static const struct i2c_eeprom_drv_data atmel24c32_data = {
.size = 4096,
.pagewidth = 5,
};
static const struct i2c_eeprom_drv_data atmel24c64_data = {
.size = 8192,
.pagewidth = 5,
};
static const struct i2c_eeprom_drv_data atmel24c128_data = {
.size = 16384,
.pagewidth = 6,
};
static const struct i2c_eeprom_drv_data atmel24c256_data = {
.size = 32768,
.pagewidth = 6,
};
static const struct i2c_eeprom_drv_data atmel24c512_data = {
.size = 65536,
.pagewidth = 6,
};
static const struct udevice_id i2c_eeprom_std_ids[] = {
{ .compatible = "i2c-eeprom", .data = 0 },
{ .compatible = "microchip,24aa02e48", .data = 3 },
{ .compatible = "atmel,24c01a", .data = 3 },
{ .compatible = "atmel,24c02", .data = 3 },
{ .compatible = "atmel,24c04", .data = 4 },
{ .compatible = "atmel,24c08", .data = 4 },
{ .compatible = "atmel,24c08a", .data = 4 },
{ .compatible = "atmel,24c16a", .data = 4 },
{ .compatible = "atmel,24mac402", .data = 4 },
{ .compatible = "atmel,24c32", .data = 5 },
{ .compatible = "atmel,24c64", .data = 5 },
{ .compatible = "atmel,24c128", .data = 6 },
{ .compatible = "atmel,24c256", .data = 6 },
{ .compatible = "atmel,24c512", .data = 6 },
{ .compatible = "i2c-eeprom", (ulong)&eeprom_data },
{ .compatible = "microchip,24aa02e48", (ulong)&mc24aa02e48_data },
{ .compatible = "atmel,24c01a", (ulong)&atmel24c01a_data },
{ .compatible = "atmel,24c02", (ulong)&atmel24c02_data },
{ .compatible = "atmel,24c04", (ulong)&atmel24c04_data },
{ .compatible = "atmel,24c08", (ulong)&atmel24c08_data },
{ .compatible = "atmel,24c08a", (ulong)&atmel24c08a_data },
{ .compatible = "atmel,24c16a", (ulong)&atmel24c16a_data },
{ .compatible = "atmel,24mac402", (ulong)&atmel24mac402_data },
{ .compatible = "atmel,24c32", (ulong)&atmel24c32_data },
{ .compatible = "atmel,24c64", (ulong)&atmel24c64_data },
{ .compatible = "atmel,24c128", (ulong)&atmel24c128_data },
{ .compatible = "atmel,24c256", (ulong)&atmel24c256_data },
{ .compatible = "atmel,24c512", (ulong)&atmel24c512_data },
{ }
};
@ -118,12 +241,94 @@ U_BOOT_DRIVER(i2c_eeprom_std) = {
.name = "i2c_eeprom",
.id = UCLASS_I2C_EEPROM,
.of_match = i2c_eeprom_std_ids,
.bind = i2c_eeprom_std_bind,
.probe = i2c_eeprom_std_probe,
.ofdata_to_platdata = i2c_eeprom_std_ofdata_to_platdata,
.priv_auto_alloc_size = sizeof(struct i2c_eeprom),
.ops = &i2c_eeprom_std_ops,
};
struct i2c_eeprom_partition {
u32 offset;
u32 size;
};
static int i2c_eeprom_partition_probe(struct udevice *dev)
{
return 0;
}
static int i2c_eeprom_partition_ofdata_to_platdata(struct udevice *dev)
{
struct i2c_eeprom_partition *priv = dev_get_priv(dev);
u32 offset, size;
int ret;
ret = dev_read_u32(dev, "offset", &offset);
if (ret)
return ret;
ret = dev_read_u32(dev, "size", &size);
if (ret)
return ret;
priv->offset = offset;
priv->size = size;
return 0;
}
static int i2c_eeprom_partition_read(struct udevice *dev, int offset,
u8 *buf, int size)
{
struct i2c_eeprom_partition *priv = dev_get_priv(dev);
struct udevice *parent = dev_get_parent(dev);
if (!parent)
return -ENODEV;
if (offset + size > priv->size)
return -EINVAL;
return i2c_eeprom_read(parent, offset + priv->offset, buf, size);
}
static int i2c_eeprom_partition_write(struct udevice *dev, int offset,
const u8 *buf, int size)
{
struct i2c_eeprom_partition *priv = dev_get_priv(dev);
struct udevice *parent = dev_get_parent(dev);
if (!parent)
return -ENODEV;
if (offset + size > priv->size)
return -EINVAL;
return i2c_eeprom_write(parent, offset + priv->offset, (uint8_t *)buf,
size);
}
static int i2c_eeprom_partition_size(struct udevice *dev)
{
struct i2c_eeprom_partition *priv = dev_get_priv(dev);
return priv->size;
}
static const struct i2c_eeprom_ops i2c_eeprom_partition_ops = {
.read = i2c_eeprom_partition_read,
.write = i2c_eeprom_partition_write,
.size = i2c_eeprom_partition_size,
};
U_BOOT_DRIVER(i2c_eeprom_partition) = {
.name = "i2c_eeprom_partition",
.id = UCLASS_I2C_EEPROM,
.probe = i2c_eeprom_partition_probe,
.ofdata_to_platdata = i2c_eeprom_partition_ofdata_to_platdata,
.priv_auto_alloc_size = sizeof(struct i2c_eeprom_partition),
.ops = &i2c_eeprom_partition_ops,
};
UCLASS_DRIVER(i2c_eeprom) = {
.id = UCLASS_I2C_EEPROM,
.name = "i2c_eeprom",

80
drivers/misc/i2c_eeprom_emul.c
View File

@ -23,10 +23,13 @@ struct sandbox_i2c_flash_plat_data {
const char *filename;
int offset_len; /* Length of an offset in bytes */
int size; /* Size of data buffer */
uint chip_addr_offset_mask; /* mask of addr bits used for offset */
};
struct sandbox_i2c_flash {
uint8_t *data;
uint prev_addr; /* slave address of previous access */
uint prev_offset; /* offset of previous access */
};
void sandbox_i2c_eeprom_set_test_mode(struct udevice *dev,
@ -44,36 +47,65 @@ void sandbox_i2c_eeprom_set_offset_len(struct udevice *dev, int offset_len)
plat->offset_len = offset_len;
}
void sandbox_i2c_eeprom_set_chip_addr_offset_mask(struct udevice *dev,
uint mask)
{
struct sandbox_i2c_flash_plat_data *plat = dev_get_platdata(dev);
plat->chip_addr_offset_mask = mask;
}
uint sanbox_i2c_eeprom_get_prev_addr(struct udevice *dev)
{
struct sandbox_i2c_flash *priv = dev_get_priv(dev);
return priv->prev_addr;
}
uint sanbox_i2c_eeprom_get_prev_offset(struct udevice *dev)
{
struct sandbox_i2c_flash *priv = dev_get_priv(dev);
return priv->prev_offset;
}
static int sandbox_i2c_eeprom_xfer(struct udevice *emul, struct i2c_msg *msg,
int nmsgs)
{
struct sandbox_i2c_flash *priv = dev_get_priv(emul);
uint offset = 0;
struct sandbox_i2c_flash_plat_data *plat = dev_get_platdata(emul);
uint offset = msg->addr & plat->chip_addr_offset_mask;
debug("\n%s\n", __func__);
debug_buffer(0, priv->data, 1, 16, 0);
/* store addr for testing visibity */
priv->prev_addr = msg->addr;
for (; nmsgs > 0; nmsgs--, msg++) {
struct sandbox_i2c_flash_plat_data *plat =
dev_get_platdata(emul);
int len;
u8 *ptr;
if (!plat->size)
return -ENODEV;
if (msg->addr + msg->len > plat->size) {
debug("%s: Address %x, len %x is outside range 0..%x\n",
__func__, msg->addr, msg->len, plat->size);
return -EINVAL;
}
len = msg->len;
debug(" %s: msg->len=%d",
debug(" %s: msg->addr=%x msg->len=%d",
msg->flags & I2C_M_RD ? "read" : "write",
msg->len);
msg->addr, msg->len);
if (msg->flags & I2C_M_RD) {
if (plat->test_mode == SIE_TEST_MODE_SINGLE_BYTE)
len = 1;
debug(", offset %x, len %x: ", offset, len);
memcpy(msg->buf, priv->data + offset, len);
if (offset + len > plat->size) {
int overflow = offset + len - plat->size;
int initial = len - overflow;
memcpy(msg->buf, priv->data + offset, initial);
memcpy(msg->buf + initial, priv->data,
overflow);
} else {
memcpy(msg->buf, priv->data + offset, len);
}
memset(msg->buf + len, '\xff', msg->len - len);
debug_buffer(0, msg->buf, 1, msg->len, 0);
} else if (len >= plat->offset_len) {
@ -87,15 +119,24 @@ static int sandbox_i2c_eeprom_xfer(struct udevice *emul, struct i2c_msg *msg,
if (plat->test_mode == SIE_TEST_MODE_SINGLE_BYTE)
len = min(len, 1);
/* For testing, map offsets into our limited buffer */
for (i = 24; i > 0; i -= 8) {
if (offset > (1 << i)) {
offset = (offset >> i) |
(offset & ((1 << i) - 1));
offset += i;
}
/* store offset for testing visibility */
priv->prev_offset = offset;
/* For testing, map offsets into our limited buffer.
* offset wraps every 256 bytes
*/
offset &= 0xff;
debug("mapped offset to %x\n", offset);
if (offset + len > plat->size) {
int overflow = offset + len - plat->size;
int initial = len - overflow;
memcpy(priv->data + offset, ptr, initial);
memcpy(priv->data, ptr + initial, overflow);
} else {
memcpy(priv->data + offset, ptr, len);
}
memcpy(priv->data + offset, ptr, len);
}
}
debug_buffer(0, priv->data, 1, 16, 0);
@ -120,6 +161,7 @@ static int sandbox_i2c_eeprom_ofdata_to_platdata(struct udevice *dev)
}
plat->test_mode = SIE_TEST_MODE_NONE;
plat->offset_len = 1;
plat->chip_addr_offset_mask = 0;
return 0;
}

33
include/i2c.h
View File

@ -45,12 +45,26 @@ struct udevice;
* represent up to 256 bytes. A value larger than 1 may be
* needed for larger devices.
* @flags: Flags for this chip (dm_i2c_chip_flags)
* @chip_addr_offset_mask: Mask of offset bits within chip_addr. Used for
* devices which steal addresses as part of offset.
* If offset_len is zero, then the offset is encoded
* completely within the chip address itself.
* e.g. a devce with chip address of 0x2c with 512
* registers might use the bottom bit of the address
* to indicate which half of the address space is being
* accessed while still only using 1 byte offset.
* This means it will respond to chip address 0x2c and
* 0x2d.
* A real world example is the Atmel AT24C04. It's
* datasheet explains it's usage of this addressing
* mode.
* @emul: Emulator for this chip address (only used for emulation)
*/
struct dm_i2c_chip {
uint chip_addr;
uint offset_len;
uint flags;
uint chip_addr_offset_mask;
#ifdef CONFIG_SANDBOX
struct udevice *emul;
bool test_mode;
@ -261,6 +275,25 @@ int i2c_set_chip_offset_len(struct udevice *dev, uint offset_len);
*/
int i2c_get_chip_offset_len(struct udevice *dev);
/**
* i2c_set_chip_addr_offset_mask() - set mask of address bits usable by offset
*
* Some devices listen on multiple chip addresses to achieve larger offsets
* than their single or multiple byte offsets would allow for. You can use this
* function to set the bits that are valid to be used for offset overflow.
*
* @mask: The mask to be used for high offset bits within address
* @return 0 if OK, other -ve value on error
*/
int i2c_set_chip_addr_offset_mask(struct udevice *dev, uint mask);
/*
* i2c_get_chip_addr_offset_mask() - get mask of address bits usable by offset
*
* @return current chip addr offset mask
*/
uint i2c_get_chip_addr_offset_mask(struct udevice *dev);
/**
* i2c_deblock() - recover a bus that is in an unknown state
*

12
include/i2c_eeprom.h
View File

@ -10,6 +10,7 @@ struct i2c_eeprom_ops {
int (*read)(struct udevice *dev, int offset, uint8_t *buf, int size);
int (*write)(struct udevice *dev, int offset, const uint8_t *buf,
int size);
int (*size)(struct udevice *dev);
};
struct i2c_eeprom {
@ -17,6 +18,8 @@ struct i2c_eeprom {
unsigned long pagesize;
/* The EEPROM's page width in bits (pagesize = 2^pagewidth) */
unsigned pagewidth;
/* The EEPROM's capacity in bytes */
unsigned long size;
};
/*
@ -43,4 +46,13 @@ int i2c_eeprom_read(struct udevice *dev, int offset, uint8_t *buf, int size);
*/
int i2c_eeprom_write(struct udevice *dev, int offset, uint8_t *buf, int size);
/*
* i2c_eeprom_size() - get size of I2C EEPROM chip
*
* @dev: Chip to query
*
* @return +ve size in bytes on success, -ve on failure
*/
int i2c_eeprom_size(struct udevice *dev);
#endif

115
test/dm/i2c.c
View File

@ -15,6 +15,7 @@
#include <dm/test.h>
#include <dm/uclass-internal.h>
#include <dm/util.h>
#include <hexdump.h>
#include <test/ut.h>
static const int busnum;
@ -185,35 +186,54 @@ static int dm_test_i2c_offset(struct unit_test_state *uts)
ut_assertok(i2c_set_chip_offset_len(dev, 0));
ut_assertok(dm_i2c_write(dev, 10 /* ignored */, (uint8_t *)"AB", 2));
ut_assertok(dm_i2c_read(dev, 0, buf, 5));
ut_assertok(memcmp(buf, "AB\0\0\0\0", sizeof(buf)));
ut_asserteq_mem("AB\0\0\0\0", buf, sizeof(buf));
ut_asserteq(0, sanbox_i2c_eeprom_get_prev_offset(eeprom));
/* Offset length 1 */
sandbox_i2c_eeprom_set_offset_len(eeprom, 1);
ut_assertok(i2c_set_chip_offset_len(dev, 1));
ut_assertok(dm_i2c_write(dev, 2, (uint8_t *)"AB", 2));
ut_asserteq(2, sanbox_i2c_eeprom_get_prev_offset(eeprom));
ut_assertok(dm_i2c_read(dev, 0, buf, 5));
ut_assertok(memcmp(buf, "ABAB\0", sizeof(buf)));
ut_asserteq_mem("ABAB\0", buf, sizeof(buf));
ut_asserteq(0, sanbox_i2c_eeprom_get_prev_offset(eeprom));
/* Offset length 2 boundary - check model wrapping */
sandbox_i2c_eeprom_set_offset_len(eeprom, 2);
ut_assertok(i2c_set_chip_offset_len(dev, 2));
ut_assertok(dm_i2c_write(dev, 0xFF, (uint8_t *)"A", 1));
ut_asserteq(0xFF, sanbox_i2c_eeprom_get_prev_offset(eeprom));
ut_assertok(dm_i2c_write(dev, 0x100, (uint8_t *)"B", 1));
ut_asserteq(0x100, sanbox_i2c_eeprom_get_prev_offset(eeprom));
ut_assertok(dm_i2c_write(dev, 0x101, (uint8_t *)"C", 1));
ut_asserteq(0x101, sanbox_i2c_eeprom_get_prev_offset(eeprom));
ut_assertok(dm_i2c_read(dev, 0xFF, buf, 5));
ut_asserteq_mem("ABCAB", buf, sizeof(buf));
ut_asserteq(0xFF, sanbox_i2c_eeprom_get_prev_offset(eeprom));
/* Offset length 2 */
sandbox_i2c_eeprom_set_offset_len(eeprom, 2);
ut_assertok(i2c_set_chip_offset_len(dev, 2));
ut_assertok(dm_i2c_write(dev, 0x210, (uint8_t *)"AB", 2));
ut_assertok(dm_i2c_read(dev, 0x210, buf, 5));
ut_assertok(memcmp(buf, "AB\0\0\0", sizeof(buf)));
ut_assertok(dm_i2c_write(dev, 0x2020, (uint8_t *)"AB", 2));
ut_assertok(dm_i2c_read(dev, 0x2020, buf, 5));
ut_asserteq_mem("AB\0\0\0", buf, sizeof(buf));
ut_asserteq(0x2020, sanbox_i2c_eeprom_get_prev_offset(eeprom));
/* Offset length 3 */
sandbox_i2c_eeprom_set_offset_len(eeprom, 2);
ut_assertok(i2c_set_chip_offset_len(dev, 2));
ut_assertok(dm_i2c_write(dev, 0x410, (uint8_t *)"AB", 2));
ut_assertok(dm_i2c_read(dev, 0x410, buf, 5));
ut_assertok(memcmp(buf, "AB\0\0\0", sizeof(buf)));
sandbox_i2c_eeprom_set_offset_len(eeprom, 3);
ut_assertok(i2c_set_chip_offset_len(dev, 3));
ut_assertok(dm_i2c_write(dev, 0x303030, (uint8_t *)"AB", 2));
ut_assertok(dm_i2c_read(dev, 0x303030, buf, 5));
ut_asserteq_mem("AB\0\0\0", buf, sizeof(buf));
ut_asserteq(0x303030, sanbox_i2c_eeprom_get_prev_offset(eeprom));
/* Offset length 4 */
sandbox_i2c_eeprom_set_offset_len(eeprom, 2);
ut_assertok(i2c_set_chip_offset_len(dev, 2));
ut_assertok(dm_i2c_write(dev, 0x420, (uint8_t *)"AB", 2));
ut_assertok(dm_i2c_read(dev, 0x420, buf, 5));
ut_assertok(memcmp(buf, "AB\0\0\0", sizeof(buf)));
sandbox_i2c_eeprom_set_offset_len(eeprom, 4);
ut_assertok(i2c_set_chip_offset_len(dev, 4));
ut_assertok(dm_i2c_write(dev, 0x40404040, (uint8_t *)"AB", 2));
ut_assertok(dm_i2c_read(dev, 0x40404040, buf, 5));
ut_asserteq_mem("AB\0\0\0", buf, sizeof(buf));
ut_asserteq(0x40404040, sanbox_i2c_eeprom_get_prev_offset(eeprom));
/* Restore defaults */
sandbox_i2c_eeprom_set_offset_len(eeprom, 1);
@ -221,3 +241,68 @@ static int dm_test_i2c_offset(struct unit_test_state *uts)
return 0;
}
DM_TEST(dm_test_i2c_offset, DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT);
static int dm_test_i2c_addr_offset(struct unit_test_state *uts)
{
struct udevice *eeprom;
struct udevice *dev;
u8 buf[5];
ut_assertok(i2c_get_chip_for_busnum(busnum, chip, 1, &dev));
/* Do a transfer so we can find the emulator */
ut_assertok(dm_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);
sandbox_i2c_eeprom_set_chip_addr_offset_mask(eeprom, 0x3);
ut_assertok(i2c_set_chip_offset_len(dev, 0));
ut_assertok(i2c_set_chip_addr_offset_mask(dev, 0x3));
ut_assertok(dm_i2c_write(dev, 0x3, (uint8_t *)"AB", 2));
ut_assertok(dm_i2c_read(dev, 0x3, buf, 5));
ut_asserteq_mem("AB\0\0\0\0", buf, sizeof(buf));
ut_asserteq(0x3, sanbox_i2c_eeprom_get_prev_offset(eeprom));
ut_asserteq(chip | 0x3, sanbox_i2c_eeprom_get_prev_addr(eeprom));
/* Offset length 1 */
sandbox_i2c_eeprom_set_offset_len(eeprom, 1);
sandbox_i2c_eeprom_set_chip_addr_offset_mask(eeprom, 0x3);
ut_assertok(i2c_set_chip_offset_len(dev, 1));
ut_assertok(i2c_set_chip_addr_offset_mask(dev, 0x3));
ut_assertok(dm_i2c_write(dev, 0x310, (uint8_t *)"AB", 2));
ut_assertok(dm_i2c_read(dev, 0x310, buf, 5));
ut_asserteq_mem("AB\0\0\0\0", buf, sizeof(buf));
ut_asserteq(0x310, sanbox_i2c_eeprom_get_prev_offset(eeprom));
ut_asserteq(chip | 0x3, sanbox_i2c_eeprom_get_prev_addr(eeprom));
/* Offset length 2 */
sandbox_i2c_eeprom_set_offset_len(eeprom, 2);
sandbox_i2c_eeprom_set_chip_addr_offset_mask(eeprom, 0x3);
ut_assertok(i2c_set_chip_offset_len(dev, 2));
ut_assertok(i2c_set_chip_addr_offset_mask(dev, 0x3));
ut_assertok(dm_i2c_write(dev, 0x32020, (uint8_t *)"AB", 2));
ut_assertok(dm_i2c_read(dev, 0x32020, buf, 5));
ut_asserteq_mem("AB\0\0\0\0", buf, sizeof(buf));
ut_asserteq(0x32020, sanbox_i2c_eeprom_get_prev_offset(eeprom));
ut_asserteq(chip | 0x3, sanbox_i2c_eeprom_get_prev_addr(eeprom));
/* Offset length 3 */
sandbox_i2c_eeprom_set_offset_len(eeprom, 3);
sandbox_i2c_eeprom_set_chip_addr_offset_mask(eeprom, 0x3);
ut_assertok(i2c_set_chip_offset_len(dev, 3));
ut_assertok(i2c_set_chip_addr_offset_mask(dev, 0x3));
ut_assertok(dm_i2c_write(dev, 0x3303030, (uint8_t *)"AB", 2));
ut_assertok(dm_i2c_read(dev, 0x3303030, buf, 5));
ut_asserteq_mem("AB\0\0\0\0", buf, sizeof(buf));
ut_asserteq(0x3303030, sanbox_i2c_eeprom_get_prev_offset(eeprom));
ut_asserteq(chip | 0x3, sanbox_i2c_eeprom_get_prev_addr(eeprom));
/* Restore defaults */
sandbox_i2c_eeprom_set_offset_len(eeprom, 1);
sandbox_i2c_eeprom_set_chip_addr_offset_mask(eeprom, 0);
return 0;
}
DM_TEST(dm_test_i2c_addr_offset, DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT);