[U-Boot] [PATCH 1/2] misc: i2c_eeprom: support DT pagesize property
Read the page size from DT when available.
Signed-off-by: Baruch Siach baruch@tkos.co.il --- drivers/misc/i2c_eeprom.c | 6 ++++++ 1 file changed, 6 insertions(+)
diff --git a/drivers/misc/i2c_eeprom.c b/drivers/misc/i2c_eeprom.c index 29ad87c1d7b4..ce2cad44d8d4 100644 --- a/drivers/misc/i2c_eeprom.c +++ b/drivers/misc/i2c_eeprom.c @@ -50,6 +50,12 @@ 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); + u32 pagesize; + + if (dev_read_u32(dev, "pagesize", &pagesize) == 0) { + priv->pagesize = pagesize; + return 0; + }
/* 6 bit -> page size of up to 2^63 (should be sufficient) */ priv->pagewidth = data & 0x3F;
Write up to page size in each i2c transfer.
Signed-off-by: Baruch Siach baruch@tkos.co.il --- drivers/misc/i2c_eeprom.c | 20 +++++++++++++++++++- 1 file changed, 19 insertions(+), 1 deletion(-)
diff --git a/drivers/misc/i2c_eeprom.c b/drivers/misc/i2c_eeprom.c index ce2cad44d8d4..f25d0540075d 100644 --- a/drivers/misc/i2c_eeprom.c +++ b/drivers/misc/i2c_eeprom.c @@ -5,6 +5,7 @@
#include <common.h> #include <linux/err.h> +#include <linux/kernel.h> #include <dm.h> #include <i2c.h> #include <i2c_eeprom.h> @@ -38,7 +39,24 @@ static int i2c_eeprom_std_read(struct udevice *dev, int offset, uint8_t *buf, static int i2c_eeprom_std_write(struct udevice *dev, int offset, const uint8_t *buf, int size) { - return -ENODEV; + struct i2c_eeprom *priv = dev_get_priv(dev); + int ret; + + while (size > 0) { + int write_size = min_t(int, size, priv->pagesize); + + ret = dm_i2c_write(dev, offset, buf, write_size); + if (ret) + return ret; + + offset += write_size; + buf += write_size; + size -= write_size; + + udelay(10000); + } + + return 0; }
static const struct i2c_eeprom_ops i2c_eeprom_std_ops = {
Hello Baruch,
Am 07.04.2019 um 11:38 schrieb Baruch Siach:
Write up to page size in each i2c transfer.
Signed-off-by: Baruch Siach baruch@tkos.co.il
drivers/misc/i2c_eeprom.c | 20 +++++++++++++++++++- 1 file changed, 19 insertions(+), 1 deletion(-)
Reviewed-by: Heiko Schocher hs@denx.de
bye, Heiko
Hello Baruch,
Am 07.04.2019 um 11:38 schrieb Baruch Siach:
Write up to page size in each i2c transfer.
Signed-off-by: Baruch Siach baruch@tkos.co.il
drivers/misc/i2c_eeprom.c | 20 +++++++++++++++++++- 1 file changed, 19 insertions(+), 1 deletion(-)
Applied to u-boot-i2c.git master
Thanks!
bye, Heiko
Hello Baruch,
Am 07.04.2019 um 11:38 schrieb Baruch Siach:
Read the page size from DT when available.
Signed-off-by: Baruch Siach baruch@tkos.co.il
drivers/misc/i2c_eeprom.c | 6 ++++++ 1 file changed, 6 insertions(+)
Reviewed-by: Heiko Schocher hs@denx.de
bye, Heiko
Hello Baruch,
Am 07.04.2019 um 11:38 schrieb Baruch Siach:
Read the page size from DT when available.
Signed-off-by: Baruch Siach baruch@tkos.co.il
drivers/misc/i2c_eeprom.c | 6 ++++++ 1 file changed, 6 insertions(+)
Applied to u-boot-i2c.git master
Thanks!
bye, Heiko
participants (2)
-
Baruch Siach -
Heiko Schocher