From: Bard Liao <yung-chuan.liao@linux.intel.com>
To: alsa-devel@alsa-project.org, vkoul@kernel.org
Cc: pierre-louis.bossart@linux.intel.com, vinod.koul@linaro.org,
tiwai@suse.de, gregkh@linuxfoundation.org,
linux-kernel@vger.kernel.org, ranjani.sridharan@linux.intel.com,
hui.wang@canonical.com, broonie@kernel.org,
srinivas.kandagatla@linaro.org, jank@cadence.com,
mengdong.lin@intel.com, slawomir.blauciak@intel.com,
sanyog.r.kale@intel.com, rander.wang@linux.intel.com,
bard.liao@intel.com
Subject: [PATCH 3/9] soundwire: intel: introduce a helper to arm link synchronization
Date: Wed, 24 Jun 2020 01:35:40 +0800 [thread overview]
Message-ID: <20200623173546.21870-4-yung-chuan.liao@linux.intel.com> (raw)
In-Reply-To: <20200623173546.21870-1-yung-chuan.liao@linux.intel.com>
From: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Move code from pre_bank_switch to dedicated helper, will be used in
follow-up patches as recommended by programming flows.
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Bard Liao <yung-chuan.liao@linux.intel.com>
---
drivers/soundwire/intel.c | 26 ++++++++++++++++----------
1 file changed, 16 insertions(+), 10 deletions(-)
diff --git a/drivers/soundwire/intel.c b/drivers/soundwire/intel.c
index 4792613e8e5a..6a745602c9cc 100644
--- a/drivers/soundwire/intel.c
+++ b/drivers/soundwire/intel.c
@@ -497,6 +497,21 @@ static int __maybe_unused intel_link_power_down(struct sdw_intel *sdw)
return 0;
}
+static void intel_shim_sync_arm(struct sdw_intel *sdw)
+{
+ void __iomem *shim = sdw->link_res->shim;
+ u32 sync_reg;
+
+ mutex_lock(sdw->link_res->shim_lock);
+
+ /* update SYNC register */
+ sync_reg = intel_readl(shim, SDW_SHIM_SYNC);
+ sync_reg |= (SDW_SHIM_SYNC_CMDSYNC << sdw->instance);
+ intel_writel(shim, SDW_SHIM_SYNC, sync_reg);
+
+ mutex_unlock(sdw->link_res->shim_lock);
+}
+
/*
* PDI routines
*/
@@ -710,21 +725,12 @@ static int intel_pre_bank_switch(struct sdw_bus *bus)
{
struct sdw_cdns *cdns = bus_to_cdns(bus);
struct sdw_intel *sdw = cdns_to_intel(cdns);
- void __iomem *shim = sdw->link_res->shim;
- int sync_reg;
/* Write to register only for multi-link */
if (!bus->multi_link)
return 0;
- mutex_lock(sdw->link_res->shim_lock);
-
- /* Read SYNC register */
- sync_reg = intel_readl(shim, SDW_SHIM_SYNC);
- sync_reg |= SDW_SHIM_SYNC_CMDSYNC << sdw->instance;
- intel_writel(shim, SDW_SHIM_SYNC, sync_reg);
-
- mutex_unlock(sdw->link_res->shim_lock);
+ intel_shim_sync_arm(sdw);
return 0;
}
--
2.17.1
next prev parent reply other threads:[~2020-06-24 5:32 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-06-23 17:35 [PATCH 0/9] soundwire: intel: revisit SHIM programming Bard Liao
2020-06-23 17:35 ` [PATCH 1/9] soundwire: intel: reuse code for wait loops to set/clear bits Bard Liao
2020-06-23 17:35 ` [PATCH 2/9] soundwire: intel: revisit SHIM programming sequences Bard Liao
2020-06-23 17:35 ` Bard Liao [this message]
2020-06-23 17:35 ` [PATCH 4/9] soundwire: intel: introduce helper for link synchronization Bard Liao
2020-06-23 17:35 ` [PATCH 5/9] soundwire: intel_init: add implementation of sdw_intel_enable_irq() Bard Liao
2020-06-23 17:35 ` [PATCH 6/9] soundwire: intel_init: use EXPORT_SYMBOL_NS Bard Liao
2020-06-23 17:35 ` [PATCH 7/9] soundwire: intel/cadence: merge Soundwire interrupt handlers/threads Bard Liao
2020-06-30 16:24 ` Vinod Koul
2020-06-30 16:46 ` Pierre-Louis Bossart
2020-07-01 5:42 ` Vinod Koul
2020-07-02 7:35 ` Liao, Bard
2020-07-02 15:01 ` Pierre-Louis Bossart
2020-07-15 4:54 ` Vinod Koul
2020-07-15 14:11 ` Pierre-Louis Bossart
2020-06-23 17:35 ` [PATCH 8/9] soundwire: intel: add wake interrupt support Bard Liao
2020-06-30 16:51 ` Vinod Koul
2020-06-30 17:18 ` Pierre-Louis Bossart
2020-07-01 5:56 ` Vinod Koul
2020-07-01 15:25 ` Pierre-Louis Bossart
2020-07-15 4:50 ` Vinod Koul
2020-07-15 14:22 ` Pierre-Louis Bossart
2020-06-23 17:35 ` [PATCH 9/9] Soundwire: intel_init: save Slave(s) _ADR info in sdw_intel_ctx Bard Liao
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