From: Bard Liao <yung-chuan.liao@linux.intel.com>
To: alsa-devel@alsa-project.org, vkoul@kernel.org
Cc: vinod.koul@linaro.org, linux-kernel@vger.kernel.org,
tiwai@suse.de, broonie@kernel.org, gregkh@linuxfoundation.org,
jank@cadence.com, srinivas.kandagatla@linaro.org,
rander.wang@linux.intel.com, ranjani.sridharan@linux.intel.com,
hui.wang@canonical.com, pierre-louis.bossart@linux.intel.com,
sanyog.r.kale@intel.com, mengdong.lin@intel.com,
bard.liao@intel.com
Subject: [PATCH 6/7] soundwire: bus: export broadcast read/write capability for tests
Date: Tue, 18 Aug 2020 22:06:55 +0800 [thread overview]
Message-ID: <20200818140656.29014-7-yung-chuan.liao@linux.intel.com> (raw)
In-Reply-To: <20200818140656.29014-1-yung-chuan.liao@linux.intel.com>
From: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Provide prototype and export symbol to enable tests. The bus lock is
handled externally to avoid conflicts e.g. between kernel-generated
traffic and test traffic.
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Reviewed-by: Guennadi Liakhovetski <guennadi.liakhovetski@linux.intel.com>
Signed-off-by: Bard Liao <yung-chuan.liao@linux.intel.com>
---
drivers/soundwire/bus.c | 56 +++++++++++++++++++++++++++++++++++------
drivers/soundwire/bus.h | 4 +++
2 files changed, 53 insertions(+), 7 deletions(-)
diff --git a/drivers/soundwire/bus.c b/drivers/soundwire/bus.c
index 869290a8db40..2e08e8f8b9aa 100644
--- a/drivers/soundwire/bus.c
+++ b/drivers/soundwire/bus.c
@@ -255,6 +255,21 @@ static int sdw_reset_page(struct sdw_bus *bus, u16 dev_num)
return ret;
}
+static int sdw_transfer_unlocked(struct sdw_bus *bus, struct sdw_msg *msg)
+{
+ int ret;
+
+ ret = do_transfer(bus, msg);
+ if (ret != 0 && ret != -ENODATA)
+ dev_err(bus->dev, "trf on Slave %d failed:%d\n",
+ msg->dev_num, ret);
+
+ if (msg->page)
+ sdw_reset_page(bus, msg->dev_num);
+
+ return ret;
+}
+
/**
* sdw_transfer() - Synchronous transfer message to a SDW Slave device
* @bus: SDW bus
@@ -266,13 +281,7 @@ int sdw_transfer(struct sdw_bus *bus, struct sdw_msg *msg)
mutex_lock(&bus->msg_lock);
- ret = do_transfer(bus, msg);
- if (ret != 0 && ret != -ENODATA)
- dev_err(bus->dev, "trf on Slave %d failed:%d\n",
- msg->dev_num, ret);
-
- if (msg->page)
- sdw_reset_page(bus, msg->dev_num);
+ ret = sdw_transfer_unlocked(bus, msg);
mutex_unlock(&bus->msg_lock);
@@ -428,6 +437,39 @@ sdw_bwrite_no_pm(struct sdw_bus *bus, u16 dev_num, u32 addr, u8 value)
return sdw_transfer(bus, &msg);
}
+int sdw_bread_no_pm_unlocked(struct sdw_bus *bus, u16 dev_num, u32 addr)
+{
+ struct sdw_msg msg;
+ u8 buf;
+ int ret;
+
+ ret = sdw_fill_msg(&msg, NULL, addr, 1, dev_num,
+ SDW_MSG_FLAG_READ, &buf);
+ if (ret)
+ return ret;
+
+ ret = sdw_transfer_unlocked(bus, &msg);
+ if (ret < 0)
+ return ret;
+
+ return buf;
+}
+EXPORT_SYMBOL(sdw_bread_no_pm_unlocked);
+
+int sdw_bwrite_no_pm_unlocked(struct sdw_bus *bus, u16 dev_num, u32 addr, u8 value)
+{
+ struct sdw_msg msg;
+ int ret;
+
+ ret = sdw_fill_msg(&msg, NULL, addr, 1, dev_num,
+ SDW_MSG_FLAG_WRITE, &value);
+ if (ret)
+ return ret;
+
+ return sdw_transfer_unlocked(bus, &msg);
+}
+EXPORT_SYMBOL(sdw_bwrite_no_pm_unlocked);
+
static int
sdw_read_no_pm(struct sdw_slave *slave, u32 addr)
{
diff --git a/drivers/soundwire/bus.h b/drivers/soundwire/bus.h
index 82484f741168..c53345fbc4c7 100644
--- a/drivers/soundwire/bus.h
+++ b/drivers/soundwire/bus.h
@@ -168,6 +168,10 @@ sdw_update(struct sdw_slave *slave, u32 addr, u8 mask, u8 val)
return sdw_write(slave, addr, tmp);
}
+/* broadcast read/write for tests */
+int sdw_bread_no_pm_unlocked(struct sdw_bus *bus, u16 dev_num, u32 addr);
+int sdw_bwrite_no_pm_unlocked(struct sdw_bus *bus, u16 dev_num, u32 addr, u8 value);
+
/*
* At the moment we only track Master-initiated hw_reset.
* Additional fields can be added as needed
--
2.17.1
next prev parent reply other threads:[~2020-08-19 2:01 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-08-18 14:06 [PATCH 0/7] soundwire: filter out invalid PARITY errors Bard Liao
2020-08-18 14:06 ` [PATCH 1/7] soundwire: bus: use property to set interrupt masks Bard Liao
2020-08-28 6:51 ` Vinod Koul
2020-09-08 12:05 ` Jaroslav Kysela
2020-09-08 12:11 ` Mark Brown
2020-09-08 12:28 ` Jaroslav Kysela
2020-09-08 14:33 ` Mark Brown
2020-09-08 14:43 ` Jaroslav Kysela
2020-09-08 14:47 ` Pierre-Louis Bossart
2020-09-08 15:14 ` Mark Brown
2020-09-08 15:33 ` Pierre-Louis Bossart
2020-08-18 14:06 ` [PATCH 2/7] soundwire: bus: filter-out unwanted interrupt reports Bard Liao
2020-08-18 14:06 ` [PATCH 3/7] soundwire: slave: add first_interrupt_done status Bard Liao
2020-08-18 14:06 ` [PATCH 4/7] soundwire: bus: use quirk to filter out invalid parity errors Bard Liao
2020-08-18 14:06 ` [PATCH 5/7] ASoC: codecs: realtek-soundwire: ignore initial PARITY errors Bard Liao
2020-08-19 8:39 ` Mark Brown
2020-08-18 14:06 ` Bard Liao [this message]
2020-08-18 14:06 ` [PATCH 7/7] soundwire: cadence: add parity error injection through debugfs Bard Liao
2020-09-08 12:07 ` [PATCH 0/7] soundwire: filter out invalid PARITY errors Jaroslav Kysela
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