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soundwire: cadence_master: add kernel parameter to override interrupt mask 

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>
alistair/sunxi64-5.4-dsi
Pierre-Louis Bossart 2019-08-05 19:55:21 -05:00 committed by Vinod Koul
parent 50302fc7b9
commit 04592dced5
1 changed files with 7 additions and 0 deletions
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7
drivers/soundwire/cadence_master.c
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@ -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;