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Commit 8171813e authored by Siddartha Mohanadoss's avatar Siddartha Mohanadoss
Browse files

mhi_dev: mhi: Update MHI interrupt registration 



MDM9640 has a dedicated interrupt for MHI A7 which
is used to process doorbells such as processing
channel, event and command configuration. On MDM9650
the MHI A7 interrupt is part of EP PCIe. MHI A7 driver
registers a callback with the EP PCIe driver for
processing doorbells.

Change-Id: Ibd2fbab015ef7b5790e36fb97b415c1c03d80b09
Signed-off-by: default avatarSiddartha Mohanadoss <smohanad@codeaurora.org>
parent cbd83e29

drivers/platform/msm/mhi_dev/mhi.c

+20 −17
Original line number Diff line number Diff line 
/* Copyright (c) 2015-2016, The Linux Foundation. All rights reserved.

/* Copyright (c) 2015-2017, The Linux Foundation. All rights reserved.

 *

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License version 2 and
@@ -1897,7 +1897,7 @@ static void mhi_dev_enable(struct work_struct *work) 
		return;

	}



	if (mhi->config_iatu)

	if (mhi_ctx->config_iatu)

		enable_irq(mhi_ctx->mhi_irq);

}
@@ -1961,20 +1961,11 @@ static int get_device_tree_data(struct platform_device *pdev) 
	}



	mhi->ipa_uc_mbox_erdb = res_mem->start;



	mhi->mhi_irq = platform_get_irq_byname(pdev, "mhi-device-inta");

	if (mhi->mhi_irq < 0) {

		pr_err("Invalid MHI device interrupt\n");

		rc = mhi->mhi_irq;

		return rc;

	}



	mhi_ctx = mhi;



	rc = of_property_read_u32((&pdev->dev)->of_node,

				"qcom,mhi-ifc-id",

				&mhi_ctx->ifc_id);



	if (rc) {

		pr_err("qcom,mhi-ifc-id does not exist.\n");

		return rc;
@@ -2012,6 +2003,16 @@ static int get_device_tree_data(struct platform_device *pdev) 
		}

	}



	if (mhi->config_iatu) {

		mhi->mhi_irq = platform_get_irq_byname(pdev, "mhi-device-inta");

		if (mhi->mhi_irq < 0) {

			pr_err("Invalid MHI device interrupt\n");

			rc = mhi->mhi_irq;

			return rc;

		}

	}





	return 0;

}
@@ -2178,6 +2179,7 @@ static int mhi_dev_probe(struct platform_device *pdev) 
	/* All set, notify the host */

	mhi_dev_sm_set_ready();



	if (mhi_ctx->config_iatu) {

		rc = devm_request_irq(&pdev->dev, mhi_ctx->mhi_irq, mhi_dev_isr,

			IRQF_TRIGGER_HIGH, "mhi_isr", mhi_ctx);

		if (rc) {
@@ -2186,6 +2188,7 @@ static int mhi_dev_probe(struct platform_device *pdev) 
		}



		disable_irq(mhi_ctx->mhi_irq);

	}



	return 0;

}