From 04592dced55a3c55eb29bd49f4fcd3e1b2ce96d6 Mon Sep 17 00:00:00 2001 From: Pierre-Louis Bossart Date: Mon, 5 Aug 2019 19:55:21 -0500 Subject: [PATCH] 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 Link: https://lore.kernel.org/r/20190806005522.22642-17-pierre-louis.bossart@linux.intel.com Signed-off-by: Vinod Koul --- 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;