This callback provides information of number of bytes to be sent/read during single transfer, as some PMICs transfer more bytes at once (e.g. MC34708 from NXP/Freescale).
At present the PMIC DM supports only transfers with one byte. The old PMIC framework was able to transfer up till 3 bytes at once. Let's provide the same capability to new PMIC framework. Signed-off-by: Lukasz Majewski <[email protected]> --- drivers/power/pmic/pmic-uclass.c | 10 ++++++++++ include/power/pmic.h | 2 ++ 2 files changed, 12 insertions(+) diff --git a/drivers/power/pmic/pmic-uclass.c b/drivers/power/pmic/pmic-uclass.c index 9347b40688..0148e5c883 100644 --- a/drivers/power/pmic/pmic-uclass.c +++ b/drivers/power/pmic/pmic-uclass.c @@ -105,6 +105,16 @@ int pmic_reg_count(struct udevice *dev) return ops->reg_count(dev); } +int pmic_trans_len(struct udevice *dev) +{ + const struct dm_pmic_ops *ops = dev_get_driver_ops(dev); + + if (!ops || !ops->trans_len) + return -ENOSYS; + + return ops->trans_len(dev); +} + int pmic_read(struct udevice *dev, uint reg, uint8_t *buffer, int len) { const struct dm_pmic_ops *ops = dev_get_driver_ops(dev); diff --git a/include/power/pmic.h b/include/power/pmic.h index f2fe537fb7..d89f6be666 100644 --- a/include/power/pmic.h +++ b/include/power/pmic.h @@ -159,12 +159,14 @@ struct pmic { * @reg_count: device's register count * @read: read 'len' bytes at "reg" and store it into the 'buffer' * @write: write 'len' bytes from the 'buffer' to the register at 'reg' address + * @trans_len: device's number of data bytes for transfer */ struct dm_pmic_ops { int (*reg_count)(struct udevice *dev); int (*read)(struct udevice *dev, uint reg, uint8_t *buffer, int len); int (*write)(struct udevice *dev, uint reg, const uint8_t *buffer, int len); + int (*trans_len)(struct udevice *dev); }; /** -- 2.11.0 _______________________________________________ U-Boot mailing list [email protected] https://lists.denx.de/listinfo/u-boot
