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| author |   Angelos Mouzakitis <a.mouzakitis@virtualopensystems.com> | 2023-10-10 14:33:42 +0000 |
|---|---|---|
| committer | Angelos Mouzakitis <a.mouzakitis@virtualopensystems.com> | 2023-10-10 14:33:42 +0000 |
| commit | af1a266670d040d2f4083ff309d732d648afba2a (patch) | |
| tree | 2fc46203448ddcc6f81546d379abfaeb323575e9 /roms/u-boot/include/spmi | |
| parent | e02cda008591317b1625707ff8e115a4841aa889 (diff) | |
Change-Id: Iaf8d18082d3991dec7c0ebbea540f092188eb4ec
Diffstat (limited to 'roms/u-boot/include/spmi')
| -rw-r--r-- | roms/u-boot/include/spmi/spmi.h | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/roms/u-boot/include/spmi/spmi.h b/roms/u-boot/include/spmi/spmi.h new file mode 100644 index 000000000..3242e6bbd --- /dev/null +++ b/roms/u-boot/include/spmi/spmi.h @@ -0,0 +1,46 @@ +#ifndef _SPMI_SPMI_H +#define _SPMI_SPMI_H + +/** + * struct dm_spmi_ops - SPMI device I/O interface + * + * Should be implemented by UCLASS_SPMI device drivers. The standard + * device operations provides the I/O interface for it's childs. + * + * @read: read register 'reg' of slave 'usid' and peripheral 'pid' + * @write: write register 'reg' of slave 'usid' and peripheral 'pid' + * + * Each register is 8-bit, both read and write can return negative values + * on error. + */ +struct dm_spmi_ops { + int (*read)(struct udevice *dev, int usid, int pid, int reg); + int (*write)(struct udevice *dev, int usid, int pid, int reg, + uint8_t value); +}; + +/** + * spmi_reg_read() - read a register from specific slave/peripheral + * + * @dev: SPMI bus to read + * @usid SlaveID + * @pid Peripheral ID + * @reg: Register to read + * @return value read on success or negative value of errno. + */ +int spmi_reg_read(struct udevice *dev, int usid, int pid, int reg); + +/** + * spmi_reg_write() - write a register of specific slave/peripheral + * + * @dev: SPMI bus to write + * @usid SlaveID + * @pid Peripheral ID + * @reg: Register to write + * @value: Value to write + * @return 0 on success or negative value of errno. + */ +int spmi_reg_write(struct udevice *dev, int usid, int pid, int reg, + uint8_t value); + +#endif |