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irqchip/qcom-pdc: Add irqdomain for wakeup capable GPIOs

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Introduce a new domain for wakeup capable GPIOs. The domain can be
requested using the bus token DOMAIN_BUS_WAKEUP. In the following
patches, we will specify PDC as the wakeup-parent for the TLMM GPIO
irqchip. Requesting a wakeup GPIO will setup the GPIO and the
corresponding PDC interrupt as its parent.

Co-developed-by: Stephen Boyd <swboyd@chromium.org>

Signed-off-by: Stephen Boyd <swboyd@chromium.org>
Signed-off-by: Lina Iyer <ilina@codeaurora.org>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Link: https://lore.kernel.org/r/1573855915-9841-5-git-send-email-ilina@codeaurora.org
This commit is contained in:
Lina Iyer
2019-11-15 15:11:47 -07:00
committed by Marc Zyngier
parent da3f875a41
commit 81ef8bf880
2 changed files with 116 additions and 9 deletions
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21
include/linux/soc/qcom/irq.h Normal file
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/* SPDX-License-Identifier: GPL-2.0-only */
#ifndef __QCOM_IRQ_H
#define __QCOM_IRQ_H
#include <linux/irqdomain.h>
#define GPIO_NO_WAKE_IRQ ~0U
/**
* QCOM specific IRQ domain flags that distinguishes the handling of wakeup
* capable interrupts by different interrupt controllers.
*
* IRQ_DOMAIN_FLAG_QCOM_PDC_WAKEUP: Line must be masked at TLMM and the
* interrupt configuration is done at PDC
* IRQ_DOMAIN_FLAG_QCOM_MPM_WAKEUP: Interrupt configuration is handled at TLMM
*/
#define IRQ_DOMAIN_FLAG_QCOM_PDC_WAKEUP (IRQ_DOMAIN_FLAG_NONCORE << 0)
#define IRQ_DOMAIN_FLAG_QCOM_MPM_WAKEUP (IRQ_DOMAIN_FLAG_NONCORE << 1)
#endif