[Bug 215436] admgpu: suspend and resuming from suspend don't work

[bugzilla-daemon@bugzilla.kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=215436

--- Comment #8 from spasswolf@web.de ---
Just did a bit of experimentation and changed dc_get_hpd_state_dcn21 (in
5.16-rc7) to

uint32_t dc_get_hpd_state_dcn21(struct irq_service *irq_service, enum
dc_irq_source source)
{
        const struct irq_source_info *info;
        uint32_t addr;
        uint32_t value;
        uint32_t current_status;

        info = find_irq_source_info(irq_service, source);
        if (!info)
                return 0;

        addr = info->status_reg;
        if (!addr)
                return 0;

        value = dm_read_reg(irq_service->ctx, addr);
        //current_status =
        //      get_reg_field_value(
        //              value,
        //              HPD0_DC_HPD_INT_STATUS,
        //              DC_HPD_SENSE);

        //return current_status;
        return 0;
}
This also leads to working suspend resume, the get_reg_field_value seems to
trigger the problems.

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