From 04592dced55a3c55eb29bd49f4fcd3e1b2ce96d6 Mon Sep 17 00:00:00 2001
From: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Date: Mon, 5 Aug 2019 19:55:21 -0500
Subject: [PATCH] soundwire: cadence_master: add kernel parameter to override interrupt mask
Git-commit: 04592dced55a3c55eb29bd49f4fcd3e1b2ce96d6
Patch-mainline: v5.4-rc1
References: jsc#SLE-16518

The code has a set of defaults which may not be relevant in all cases,
add kernel parameter as a helper - mostly for early board bring-up.

Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/r/20190806005522.22642-17-pierre-louis.bossart@linux.intel.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Acked-by: Takashi Iwai <tiwai@suse.de>

---
 drivers/soundwire/cadence_master.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/drivers/soundwire/cadence_master.c b/drivers/soundwire/cadence_master.c
index 92d1387c6d2b..65f27fcd4f14 100644
--- a/drivers/soundwire/cadence_master.c
+++ b/drivers/soundwire/cadence_master.c
@@ -19,6 +19,10 @@
 #include "bus.h"
 #include "cadence_master.h"
 
+static int interrupt_mask;
+module_param_named(cnds_mcp_int_mask, interrupt_mask, int, 0444);
+MODULE_PARM_DESC(cdns_mcp_int_mask, "Cadence MCP IntMask");
+
 #define CDNS_MCP_CONFIG				0x0
 
 #define CDNS_MCP_CONFIG_MCMD_RETRY		GENMASK(27, 24)
@@ -668,6 +672,9 @@ static int _cdns_enable_interrupt(struct sdw_cdns *cdns)
 	 */
 	mask |= CDNS_MCP_INT_IRQ;
 
+	if (interrupt_mask) /* parameter override */
+		mask = interrupt_mask;
+
 	cdns_writel(cdns, CDNS_MCP_INTMASK, mask);
 
 	return 0;
-- 
2.16.4