| From | Pierre-Louis Bossart <> | Subject | [RFC PATCH 30/40] soundwire: cadence_master: add kernel parameter to override interrupt mask | Date | Thu, 25 Jul 2019 18:40:22 -0500 |
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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 18c6ac026e85..dede55072191 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) @@ -830,6 +834,9 @@ int sdw_cdns_enable_interrupt(struct sdw_cdns *cdns) /* now enable all of the above */ mask |= CDNS_MCP_INT_IRQ; + if (interrupt_mask) /* parameter override */ + mask = interrupt_mask; + cdns_writel(cdns, CDNS_MCP_INTMASK, mask); return do_reset(cdns); -- 2.20.1
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