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1fc778f7c8
The SSIF-2 IP is available on the Renesas RZ/G3S SoC. The Renesas RZ/G3S SoC supports a power-saving mode where power to most of the SoC components is turned off. Add suspend/resume support to the SSIF-2 driver to support this power-saving mode. On SNDRV_PCM_TRIGGER_SUSPEND trigger the SSI is stopped (the stream user pointer is left untouched to avoid breaking user space and the dma buffer pointer is set to zero), on SNDRV_PCM_TRIGGER_RESUME software reset is issued for the SSIF-2 IP and the clocks are re-configured. Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com> Link: https://patch.msgid.link/20241210170953.2936724-18-claudiu.beznea.uj@bp.renesas.com Signed-off-by: Mark Brown <broonie@kernel.org>