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| author |   Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> | 2019-10-22 18:54:48 -0500 |
|---|---|---|
| committer |   Vinod Koul <vkoul@kernel.org> | 2019-10-24 17:22:01 +0530 |
| commit | 3ccb8551f52edfcf16291cde07a8d49fc3976b7a (patch) | |
| tree | 3fd2ce46d73edd1cb6c91397b53d546e7f756941 /drivers/soundwire/cadence_master.c | |
| parent | soundwire: intel/cadence: add flag for interrupt enable (diff) | |
| download | linux-dev-3ccb8551f52edfcf16291cde07a8d49fc3976b7a.tar.xz linux-dev-3ccb8551f52edfcf16291cde07a8d49fc3976b7a.zip | |
soundwire: cadence_master: make clock stop exit configurable on init
The use of clock stop is not a requirement, the IP can e.g. be
completely power gated and not detect any wakes while in s2idle/deep
sleep.
For now clock-stop is not supported anyways so the control parameter
is always false. This will be revisited when we add clock stop.
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/r/20191022235448.17586-6-pierre-louis.bossart@linux.intel.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Diffstat (limited to 'drivers/soundwire/cadence_master.c')
| -rw-r--r-- | drivers/soundwire/cadence_master.c | 15 |
1 files changed, 8 insertions, 7 deletions
diff --git a/drivers/soundwire/cadence_master.c b/drivers/soundwire/cadence_master.c index d2c44bfff53a..fed21e2b2277 100644 --- a/drivers/soundwire/cadence_master.c +++ b/drivers/soundwire/cadence_master.c @@ -979,7 +979,7 @@ static u32 cdns_set_initial_frame_shape(int n_rows, int n_cols) * sdw_cdns_init() - Cadence initialization * @cdns: Cadence instance */ -int sdw_cdns_init(struct sdw_cdns *cdns) +int sdw_cdns_init(struct sdw_cdns *cdns, bool clock_stop_exit) { struct sdw_bus *bus = &cdns->bus; struct sdw_master_prop *prop = &bus->prop; @@ -987,12 +987,13 @@ int sdw_cdns_init(struct sdw_cdns *cdns) int divider; int ret; - /* Exit clock stop */ - ret = cdns_clear_bit(cdns, CDNS_MCP_CONTROL, - CDNS_MCP_CONTROL_CLK_STOP_CLR); - if (ret < 0) { - dev_err(cdns->dev, "Couldn't exit from clock stop\n"); - return ret; + if (clock_stop_exit) { + ret = cdns_clear_bit(cdns, CDNS_MCP_CONTROL, + CDNS_MCP_CONTROL_CLK_STOP_CLR); + if (ret < 0) { + dev_err(cdns->dev, "Couldn't exit from clock stop\n"); + return ret; + } } /* Set clock divider */ |