• Shiraz Hashim's avatar
    ARM: SPEAr3xx: shirq: simplify and move the shared irq multiplexor to DT · 80515a5a
    Shiraz Hashim authored
    SPEAr3xx architecture includes shared/multiplexed irqs for certain set
    of devices. The multiplexor provides a single interrupt to parent
    interrupt controller (VIC) on behalf of a group of devices.
    
    There can be multiple groups available on SPEAr3xx variants but not
    exceeding 4. The number of devices in a group can differ, further they
    may share same set of status/mask registers spanning across different
    bit masks. Also in some cases the group may not have enable or other
    registers. This makes software little complex.
    
    Present implementation was non-DT and had few complex data structures to
    decipher banks, number of irqs supported, mask and registers involved.
    
    This patch simplifies the overall design and convert it in to DT.  It
    also removes all registration from individual SoC files and bring them
    in to common shirq.c.
    
    Also updated the corresponding documentation for DT binding of shirq.
    Signed-off-by: default avatarShiraz Hashim <shiraz.hashim@st.com>
    Signed-off-by: default avatarViresh Kumar <viresh.kumar@linaro.org>
    80515a5a
irqs.h 477 Bytes