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Subject[PATCH 16/17] soundwire: cadence_master: add kernel parameter to override interrupt mask
Date
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>
---
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 fb198a806efd..4ab3174cbb04 100644
--- a/drivers/soundwire/cadence_master.c
+++ b/drivers/soundwire/cadence_master.c
@@ -20,6 +20,10 @@
#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)
@@ -762,6 +766,9 @@ 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;
--
2.20.1
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