Commit 2d26cf01 authored by Bob Beckett's avatar Bob Beckett
Browse files

misc: i2c_eeprom: set offset len and chip addr offset mask



Set the correct offset length and chip address offset mask for each
device to allow correct access to total capacity of the devices.
Signed-off-by: Bob Beckett's avatarRobert Beckett <bob.beckett@collabora.com>
Series-to: u-boot@lists.denx.de
Series-cc: Robert Beckett <bob.beckett@collabora.com>
Cover-letter:
misc: i2c_eeprom: add paritioning and size query
Add ability to specify paritions for eeprom in device tree, and query
eeprom device sizes.
Each partition creates a child device, allowing board code to
find the eeprom parition by name.
END
parent cf307b9f
......@@ -15,6 +15,8 @@
struct i2c_eeprom_drv_data {
u32 size; /* size in bytes */
u32 pagewidth; /* pagesize = 2^pagewidth */
u32 addr_offset_mask; /* bits in addr used for offset overflow */
u32 offset_len; /* size in bytes of offset */
};
int i2c_eeprom_read(struct udevice *dev, int offset, uint8_t *buf, int size)
......@@ -140,6 +142,11 @@ static int i2c_eeprom_std_probe(struct udevice *dev)
{
u8 test_byte;
int ret;
struct i2c_eeprom_drv_data *data =
(struct i2c_eeprom_drv_data *)dev_get_driver_data(dev);
i2c_set_chip_offset_len(dev, data->offset_len);
i2c_set_chip_addr_offset_mask(dev, data->addr_offset_mask);
/* Verify that the chip is functional */
ret = i2c_eeprom_read(dev, 0, &test_byte, 1);
......@@ -152,71 +159,99 @@ static int i2c_eeprom_std_probe(struct udevice *dev)
static const struct i2c_eeprom_drv_data eeprom_data = {
.size = 0,
.pagewidth = 0,
.addr_offset_mask = 0,
.offset_len = 1,
};
static const struct i2c_eeprom_drv_data mc24aa02e48_data = {
.size = 256,
.pagewidth = 3,
.addr_offset_mask = 0,
.offset_len = 1,
};
static const struct i2c_eeprom_drv_data atmel24c01a_data = {
.size = 128,
.pagewidth = 3,
.addr_offset_mask = 0,
.offset_len = 1,
};
static const struct i2c_eeprom_drv_data atmel24c02_data = {
.size = 256,
.pagewidth = 3,
.addr_offset_mask = 0,
.offset_len = 1,
};
static const struct i2c_eeprom_drv_data atmel24c04_data = {
.size = 512,
.pagewidth = 4,
.addr_offset_mask = 0x1,
.offset_len = 1,
};
static const struct i2c_eeprom_drv_data atmel24c08_data = {
.size = 1024,
.pagewidth = 4,
.addr_offset_mask = 0x3,
.offset_len = 1,
};
static const struct i2c_eeprom_drv_data atmel24c08a_data = {
.size = 1024,
.pagewidth = 4,
.addr_offset_mask = 0x3,
.offset_len = 1,
};
static const struct i2c_eeprom_drv_data atmel24c16a_data = {
.size = 2048,
.pagewidth = 4,
.addr_offset_mask = 0x7,
.offset_len = 1,
};
static const struct i2c_eeprom_drv_data atmel24mac402_data = {
.size = 256,
.pagewidth = 4,
.addr_offset_mask = 0,
.offset_len = 1,
};
static const struct i2c_eeprom_drv_data atmel24c32_data = {
.size = 4096,
.pagewidth = 5,
.addr_offset_mask = 0,
.offset_len = 2,
};
static const struct i2c_eeprom_drv_data atmel24c64_data = {
.size = 8192,
.pagewidth = 5,
.addr_offset_mask = 0,
.offset_len = 2,
};
static const struct i2c_eeprom_drv_data atmel24c128_data = {
.size = 16384,
.pagewidth = 6,
.addr_offset_mask = 0,
.offset_len = 2,
};
static const struct i2c_eeprom_drv_data atmel24c256_data = {
.size = 32768,
.pagewidth = 6,
.addr_offset_mask = 0,
.offset_len = 2,
};
static const struct i2c_eeprom_drv_data atmel24c512_data = {
.size = 65536,
.pagewidth = 6,
.addr_offset_mask = 0,
.offset_len = 2,
};
static const struct udevice_id i2c_eeprom_std_ids[] = {
......
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