• Sricharan R's avatar
    DRIVERS: IRQCHIP: CROSSBAR: Add support for Crossbar IP · 96ca848e
    Sricharan R authored
    Some socs have a large number of interrupts requests to service
    the needs of its many peripherals and subsystems. All of the
    interrupt lines from the subsystems are not needed at the same
    time, so they have to be muxed to the irq-controller appropriately.
    In such places a interrupt controllers are preceded by an CROSSBAR
    that provides flexibility in muxing the device requests to the controller
    inputs.
    
    This driver takes care a allocating a free irq and then configuring the
    crossbar IP as a part of the mpu's irqchip callbacks. crossbar_init should
    be called right before the irqchip_init, so that it is setup to handle the
    irqchip callbacks.
    
    Cc: Thomas Gleixner <tglx@linutronix.de>
    Cc: Linus Walleij <linus.walleij@linaro.org>
    Cc: Santosh Shilimkar <santosh.shilimkar@ti.com>
    Cc: Russell King <linux@arm.linux.org.uk>
    Cc: Tony Lindgren <tony@atomide.com>
    Cc: Rajendra Nayak <rnayak@ti.com>
    Cc: Marc Zyngier <marc.zyngier@arm.com>
    Cc: Grant Likely <grant.likely@linaro.org>
    Cc: Rob Herring <rob.herring@calxeda.com>
    Signed-off-by: default avatarSricharan R <r.sricharan@ti.com>
    Acked-by: Kumar Gala <galak@codeaurora.org> (for DT binding portion)
    Acked-by: default avatarSantosh Shilimkar <santosh.shilimkar@ti.com>
    Acked-by: default avatarLinus Walleij <linus.walleij@linaro.org>
    Acked-by: default avatarThomas Gleixner <tglx@linutronix.de>
    96ca848e
crossbar.txt 1.13 KB