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Commit e2ef80a4 authored by Jishnu Prakash's avatar Jishnu Prakash
Browse files

msm: sps: Add support to enable NO_SUSPEND interrupt option 



Some clients need to register BAM interrupt on BAM enable with
NO_SUSPEND option. Add support to give client this option at BAM
registration time.

Change-Id: I60165fcbb8f42f4abcab2b05338756fb9f31af04
Signed-off-by: default avatarJishnu Prakash <jprakash@codeaurora.org>
parent 035363ab

drivers/platform/msm/sps/sps_bam.c

+9 −3
Original line number Diff line number Diff line 
/* Copyright (c) 2011-2017, The Linux Foundation. All rights reserved.

/* Copyright (c) 2011-2018, 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
@@ -274,6 +274,7 @@ int sps_bam_enable(struct sps_bam *dev) 
	int result;

	int rc;

	int MTIenabled;

	unsigned long irq_arg = 0;



	/* Is this BAM enabled? */

	if ((dev->state & BAM_STATE_ENABLED))
@@ -285,6 +286,9 @@ int sps_bam_enable(struct sps_bam *dev) 
		return SPS_ERROR;

	}



	if (dev->props.options & SPS_BAM_OPT_IRQ_NO_SUSPEND)

		irq_arg = IRQF_NO_SUSPEND;



	/* Set interrupt handling */

	if ((dev->props.options & SPS_BAM_OPT_IRQ_DISABLED) != 0 ||

	    dev->props.irq == SPS_IRQ_INVALID) {
@@ -297,14 +301,16 @@ int sps_bam_enable(struct sps_bam *dev) 
			if (dev->props.options & SPS_BAM_RES_CONFIRM) {

				result = request_irq(dev->props.irq,

					(irq_handler_t) bam_isr,

					IRQF_TRIGGER_RISING, "sps", dev);

					(IRQF_TRIGGER_RISING | irq_arg),

					"sps", dev);

				SPS_DBG3(dev,

					"sps:BAM %pa uses edge for IRQ# %d\n",

					BAM_ID(dev), dev->props.irq);

			} else {

				result = request_irq(dev->props.irq,

					(irq_handler_t) bam_isr,

					IRQF_TRIGGER_HIGH, "sps", dev);

					(IRQF_TRIGGER_HIGH | irq_arg),

					"sps", dev);

				SPS_DBG3(dev,

					"sps:BAM %pa uses level for IRQ# %d\n",

					BAM_ID(dev), dev->props.irq);

include/linux/msm-sps.h

+3 −1
Original line number Diff line number Diff line 
/* Copyright (c) 2011-2016, The Linux Foundation. All rights reserved.

/* Copyright (c) 2011-2016, 2018, 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
@@ -119,6 +119,8 @@ 
#define SPS_BAM_CACHED_WP           (1UL << 10)

/* Reset BAM with pipes connected */

#define SPS_BAM_FORCE_RESET         (1UL << 11)

/* BAM IRQ is enabled with IRQF_NO_SUSPEND added*/

#define SPS_BAM_OPT_IRQ_NO_SUSPEND	(1UL << 12)



/* BAM device management flags */