[U-Boot, 01/13] misc: i2c_eeprom: set offset len and chip addr offset mask

31 Jan 2020

From: Robert Beckett bob.beckett@collabora.com
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: Robert Beckett bob.beckett@collabora.com
---
 drivers/misc/i2c_eeprom.c | 35 +++++++++++++++++++++++++++++++++++
 1 file changed, 35 insertions(+)

diff --git a/drivers/misc/i2c_eeprom.c b/drivers/misc/i2c_eeprom.c
index 934f820..6c0459d 100644
--- a/drivers/misc/i2c_eeprom.c
+++ b/drivers/misc/i2c_eeprom.c
@@ -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[] = {
-- 
2.10.1


    

[U-Boot, 01/13] misc: i2c_eeprom: set offset len and chip addr offset mask

Ian Ray