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Subject[PATCH v2 11/36] coresight: stm: Cleanup device specific data
Date
Keep track of the STM coresight device which is a child device
of the AMBA device. Since we can get to the coresight_device
from the "device" instance, remove the explicit field.

Cc: Mathieu Poirier <mathieu.poirier@linaro.org>
Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com>
---
drivers/hwtracing/coresight/coresight-stm.c | 21 ++++++++++-----------
1 file changed, 10 insertions(+), 11 deletions(-)

diff --git a/drivers/hwtracing/coresight/coresight-stm.c b/drivers/hwtracing/coresight/coresight-stm.c
index 9f8a844..8f50484 100644
--- a/drivers/hwtracing/coresight/coresight-stm.c
+++ b/drivers/hwtracing/coresight/coresight-stm.c
@@ -110,7 +110,6 @@ struct channel_space {
/**
* struct stm_drvdata - specifics associated to an STM component
* @base: memory mapped base address for this component.
- * @dev: the device entity associated to this component.
* @atclk: optional clock for the core parts of the STM.
* @csdev: component vitals needed by the framework.
* @spinlock: only one at a time pls.
@@ -128,7 +127,6 @@ struct channel_space {
*/
struct stm_drvdata {
void __iomem *base;
- struct device *dev;
struct clk *atclk;
struct coresight_device *csdev;
spinlock_t spinlock;
@@ -205,13 +203,13 @@ static int stm_enable(struct coresight_device *csdev,
if (val)
return -EBUSY;

- pm_runtime_get_sync(drvdata->dev);
+ pm_runtime_get_sync(csdev->dev.parent);

spin_lock(&drvdata->spinlock);
stm_enable_hw(drvdata);
spin_unlock(&drvdata->spinlock);

- dev_dbg(drvdata->dev, "STM tracing enabled\n");
+ dev_dbg(&csdev->dev, "STM tracing enabled\n");
return 0;
}

@@ -271,10 +269,10 @@ static void stm_disable(struct coresight_device *csdev,
/* Wait until the engine has completely stopped */
coresight_timeout(drvdata->base, STMTCSR, STMTCSR_BUSY_BIT, 0);

- pm_runtime_put(drvdata->dev);
+ pm_runtime_put(csdev->dev.parent);

local_set(&drvdata->mode, CS_MODE_DISABLED);
- dev_dbg(drvdata->dev, "STM tracing disabled\n");
+ dev_dbg(&csdev->dev, "STM tracing disabled\n");
}
}

@@ -763,9 +761,10 @@ static void stm_init_default_data(struct stm_drvdata *drvdata)
bitmap_clear(drvdata->chs.guaranteed, 0, drvdata->numsp);
}

-static void stm_init_generic_data(struct stm_drvdata *drvdata)
+static void stm_init_generic_data(struct stm_drvdata *drvdata,
+ const char *name)
{
- drvdata->stm.name = dev_name(drvdata->dev);
+ drvdata->stm.name = name;

/*
* MasterIDs are assigned at HW design phase. As such the core is
@@ -807,7 +806,6 @@ static int stm_probe(struct amba_device *adev, const struct amba_id *id)
if (!drvdata)
return -ENOMEM;

- drvdata->dev = &adev->dev;
drvdata->atclk = devm_clk_get(&adev->dev, "atclk"); /* optional */
if (!IS_ERR(drvdata->atclk)) {
ret = clk_prepare_enable(drvdata->atclk);
@@ -848,7 +846,7 @@ static int stm_probe(struct amba_device *adev, const struct amba_id *id)
spin_lock_init(&drvdata->spinlock);

stm_init_default_data(drvdata);
- stm_init_generic_data(drvdata);
+ stm_init_generic_data(drvdata, dev_name(dev));

if (stm_register_device(dev, &drvdata->stm, THIS_MODULE)) {
dev_info(dev,
@@ -870,7 +868,8 @@ static int stm_probe(struct amba_device *adev, const struct amba_id *id)

pm_runtime_put(&adev->dev);

- dev_info(dev, "%s initialized\n", (char *)coresight_get_uci_data(id));
+ dev_info(&drvdata->csdev->dev, "%s initialized\n",
+ (char *)coresight_get_uci_data(id));
return 0;

stm_unregister:
--
2.7.4
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