• Agustin Vega-Frias's avatar
    irqchip/qcom: Add IRQ combiner driver · f20cc9b0
    Agustin Vega-Frias authored
    Driver for interrupt combiners in the Top-level Control and Status
    Registers (TCSR) hardware block in Qualcomm Technologies chips.
    
    An interrupt combiner in this block combines a set of interrupts by
    OR'ing the individual interrupt signals into a summary interrupt
    signal routed to a parent interrupt controller, and provides read-
    only, 32-bit registers to query the status of individual interrupts.
    The status bit for IRQ n is bit (n % 32) within register (n / 32)
    of the given combiner. Thus, each combiner can be described as a set
    of register offsets and the number of IRQs managed.
    Signed-off-by: default avatarAgustin Vega-Frias <agustinv@codeaurora.org>
    Signed-off-by: default avatarMarc Zyngier <marc.zyngier@arm.com>
    f20cc9b0
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