linux-kernel - [PATCH 5/5] soundwire: qcom: enable CPU interrupts for mmio devices

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Message-Id: <20200608204347.19685-6-jonathan@marek.ca>
Date:   Mon,  8 Jun 2020 16:43:46 -0400
From:   Jonathan Marek <jonathan@...ek.ca>
To:     alsa-devel@...a-project.org
Cc:     Andy Gross <agross@...nel.org>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        Vinod Koul <vkoul@...nel.org>,
        Sanyog Kale <sanyog.r.kale@...el.com>,
        Pierre-Louis Bossart <pierre-louis.bossart@...ux.intel.com>,
        linux-arm-msm@...r.kernel.org (open list:ARM/QUALCOMM SUPPORT),
        linux-kernel@...r.kernel.org (open list)
Subject: [PATCH 5/5] soundwire: qcom: enable CPU interrupts for mmio devices

This allows the CPU to receive interrupts.

Signed-off-by: Jonathan Marek <jonathan@...ek.ca>
---
 drivers/soundwire/qcom.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/drivers/soundwire/qcom.c b/drivers/soundwire/qcom.c
index ac81c64768ea..58ffb46e0d64 100644
--- a/drivers/soundwire/qcom.c
+++ b/drivers/soundwire/qcom.c
@@ -34,6 +34,7 @@
 #define SWRM_INTERRUPT_STATUS_SPECIAL_CMD_ID_FINISHED		BIT(10)
 #define SWRM_INTERRUPT_MASK_ADDR				0x204
 #define SWRM_INTERRUPT_CLEAR					0x208
+#define SWRM_INTERRUPT_CPU_EN					0x210
 #define SWRM_CMD_FIFO_WR_CMD					0x300
 #define SWRM_CMD_FIFO_RD_CMD					0x304
 #define SWRM_CMD_FIFO_CMD					0x308
@@ -325,6 +326,12 @@ static int qcom_swrm_init(struct qcom_swrm_ctrl *ctrl)
 	ctrl->reg_write(ctrl, SWRM_COMP_CFG_ADDR,
 			SWRM_COMP_CFG_IRQ_LEVEL_OR_PULSE_MSK |
 			SWRM_COMP_CFG_ENABLE_MSK);
+
+	/* enable CPU IRQs */
+	if (ctrl->mmio) {
+		ctrl->reg_write(ctrl, SWRM_INTERRUPT_CPU_EN,
+				SWRM_INTERRUPT_STATUS_RMSK);
+	}
 	return 0;
 }
 
-- 
2.26.1