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Commit a0550c97 authored by Rama Krishna Phani A's avatar Rama Krishna Phani A Committed by Jishnu Prakash
Browse files

msm: sps: Add support to perform BAM reset with pipes connected 



Few clients require to reset BAM forcefully with pipes still
connected. Add support to perform BAM reset with pipes connected.

Change-Id: I19264d78a06f7e324bb6aa75c13774c404586480
Signed-off-by: default avatarRama Krishna Phani A <rphani@codeaurora.org>
parent 11a18c0d

drivers/platform/msm/sps/sps_bam.c

+12 −5
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
@@ -646,12 +646,19 @@ int sps_bam_reset(struct sps_bam *dev) 
		      pipe_index++) {

			pipe = dev->pipes[pipe_index];

			if (BAM_PIPE_IS_ASSIGNED(pipe)) {

				if (!(dev->props.options &

							SPS_BAM_FORCE_RESET)) {

					SPS_ERR(dev,

						"sps:BAM device %pa RESET failed: pipe %d in use\n",

						BAM_ID(dev), pipe_index);

					result = SPS_ERROR;

					break;

				}



				SPS_DBG2(dev,

					"sps: BAM %pa is force reset with pipe %d in use\n",

					BAM_ID(dev), pipe_index);

			}

		}



		if (result == 0)

include/linux/msm-sps.h

+3 −1
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
@@ -120,6 +120,8 @@ 
#define SPS_BAM_HOLD_MEM            (1UL << 8)

/* Use cached write pointer */

#define SPS_BAM_CACHED_WP           (1UL << 10)

/* Reset BAM with pipes connected */

#define SPS_BAM_FORCE_RESET         (1UL << 11)



/* BAM device management flags */