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soundwire: intel_bus_common: enable interrupts last

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It's not clear why we enabled interrupts in the Cadence IP first. The
logical programming sequence should be to first start the bus, and
only second to enable the interrupts.

Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Rander Wang <rander.wang@intel.com>
Signed-off-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Link: https://lore.kernel.org/r/20230518024119.164160-2-yung-chuan.liao@linux.intel.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
This commit is contained in:
Pierre-Louis Bossart 2023-05-18 10:41:17 +08:00 committed by Vinod Koul
parent ccc6cf1573
commit 46b56a5cd2
1 changed files with 28 additions and 33 deletions
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61
drivers/soundwire/intel_bus_common.c
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@ -16,12 +16,6 @@ int intel_start_bus(struct sdw_intel *sdw)
struct sdw_bus *bus = &cdns->bus;
int ret;
ret = sdw_cdns_enable_interrupt(cdns, true);
if (ret < 0) {
dev_err(dev, "%s: cannot enable interrupts: %d\n", __func__, ret);
return ret;
}
/*
* follow recommended programming flows to avoid timeouts when
* gsync is enabled
@ -32,30 +26,33 @@ int intel_start_bus(struct sdw_intel *sdw)
ret = sdw_cdns_init(cdns);
if (ret < 0) {
dev_err(dev, "%s: unable to initialize Cadence IP: %d\n", __func__, ret);
goto err_interrupt;
return ret;
}
ret = sdw_cdns_exit_reset(cdns);
if (ret < 0) {
dev_err(dev, "%s: unable to exit bus reset sequence: %d\n", __func__, ret);
goto err_interrupt;
return ret;
}
if (bus->multi_link) {
ret = sdw_intel_sync_go(sdw);
if (ret < 0) {
dev_err(dev, "%s: sync go failed: %d\n", __func__, ret);
goto err_interrupt;
return ret;
}
}
ret = sdw_cdns_enable_interrupt(cdns, true);
if (ret < 0) {
dev_err(dev, "%s: cannot enable interrupts: %d\n", __func__, ret);
return ret;
}
sdw_cdns_check_self_clearing_bits(cdns, __func__,
true, INTEL_MASTER_RESET_ITERATIONS);
return 0;
err_interrupt:
sdw_cdns_enable_interrupt(cdns, false);
return ret;
}
int intel_start_bus_after_reset(struct sdw_intel *sdw)
@ -86,12 +83,6 @@ int intel_start_bus_after_reset(struct sdw_intel *sdw)
status = SDW_UNATTACH_REQUEST_MASTER_RESET;
sdw_clear_slave_status(bus, status);
ret = sdw_cdns_enable_interrupt(cdns, true);
if (ret < 0) {
dev_err(dev, "cannot enable interrupts during resume\n");
return ret;
}
/*
* follow recommended programming flows to avoid
* timeouts when gsync is enabled
@ -115,31 +106,36 @@ int intel_start_bus_after_reset(struct sdw_intel *sdw)
ret = sdw_cdns_clock_restart(cdns, !clock_stop0);
if (ret < 0) {
dev_err(dev, "unable to restart clock during resume\n");
goto err_interrupt;
if (!clock_stop0)
sdw_cdns_enable_interrupt(cdns, false);
return ret;
}
if (!clock_stop0) {
ret = sdw_cdns_exit_reset(cdns);
if (ret < 0) {
dev_err(dev, "unable to exit bus reset sequence during resume\n");
goto err_interrupt;
return ret;
}
if (bus->multi_link) {
ret = sdw_intel_sync_go(sdw);
if (ret < 0) {
dev_err(sdw->cdns.dev, "sync go failed during resume\n");
goto err_interrupt;
return ret;
}
}
ret = sdw_cdns_enable_interrupt(cdns, true);
if (ret < 0) {
dev_err(dev, "cannot enable interrupts during resume\n");
return ret;
}
}
sdw_cdns_check_self_clearing_bits(cdns, __func__, true, INTEL_MASTER_RESET_ITERATIONS);
return 0;
err_interrupt:
sdw_cdns_enable_interrupt(cdns, false);
return ret;
}
void intel_check_clock_stop(struct sdw_intel *sdw)
@ -158,16 +154,15 @@ int intel_start_bus_after_clock_stop(struct sdw_intel *sdw)
struct sdw_cdns *cdns = &sdw->cdns;
int ret;
ret = sdw_cdns_enable_interrupt(cdns, true);
if (ret < 0) {
dev_err(dev, "%s: cannot enable interrupts: %d\n", __func__, ret);
return ret;
}
ret = sdw_cdns_clock_restart(cdns, false);
if (ret < 0) {
dev_err(dev, "%s: unable to restart clock: %d\n", __func__, ret);
sdw_cdns_enable_interrupt(cdns, false);
return ret;
}
ret = sdw_cdns_enable_interrupt(cdns, true);
if (ret < 0) {
dev_err(dev, "%s: cannot enable interrupts: %d\n", __func__, ret);
return ret;
}