[PATCH v4 1/3] ACPI / PMIC: Add support for executing PMIC MIPI sequence elements

[Mika Westerberg]

On Thu, Dec 13, 2018 at 04:35:31PM +0100, Hans de Goede wrote:
> DSI LCD panels describe an initialization sequence in the Video BIOS
> Tables using so called MIPI sequences. One possible element in these
> sequences is a PMIC specific element of 15 bytes.
> 
> Although this is not really an ACPI opregion, the ACPI opregion code is the
> closest thing we have. We need to have support for these PMIC specific MIPI
> sequence elements somwhere. Since we already instantiate a special platform
> device for Intel PMICs for the ACPI PMIC OpRegion handler to bind to,
> with PMIC specific implementations of the OpRegion, the handling of MIPI
> sequence PMIC elements fits very well in the ACPI PMIC OpRegion code.
> 
> This commit adds a new intel_soc_pmic_exec_mipi_pmic_seq_element()
> function, which is to be backed by a PMIC specific
> exec_mipi_pmic_seq_element callback. This function will be called by the
> i915 code to execture MIPI sequence PMIC elements.
> 
> Signed-off-by: Hans de Goede <hdegoede at redhat.com>

Reviewed-by: Mika Westerberg <mika.westerberg at linux.intel.com>