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coresight: dynamic-replicator: Prepare for merging with static replicator

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Rename the dynamic replicator specific routines for merging with the
replicator driver. Also re-arrange the probe routine to make it easier
to merge.

Cc: Mathieu Poirier <mathieu.poirier@linaro.org>
Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Suzuki K Poulose 2019-04-25 13:52:44 -06:00 committed by Greg Kroah-Hartman
parent eb6934b5c1
commit c827db6566
1 changed files with 63 additions and 41 deletions
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104
drivers/hwtracing/coresight/coresight-dynamic-replicator.c
View file

@ -21,13 +21,13 @@
#define REPLICATOR_IDFILTER1 0x004
/**
* struct replicator_state - specifics associated to a replicator component
* struct replicator_drvdata - specifics associated to a replicator component
* @base: memory mapped base address for this component.
* @dev: the device entity associated with this component
* @atclk: optional clock for the core parts of the replicator.
* @csdev: component vitals needed by the framework
*/
struct replicator_state {
struct replicator_drvdata {
void __iomem *base;
struct device *dev;
struct clk *atclk;
@ -35,9 +35,9 @@ struct replicator_state {
};
/*
* replicator_reset : Reset the replicator configuration to sane values.
* dynamic_replicator_reset : Reset the replicator configuration to sane values.
*/
static void replicator_reset(struct replicator_state *drvdata)
static void dynamic_replicator_reset(struct replicator_drvdata *drvdata)
{
CS_UNLOCK(drvdata->base);
@ -50,12 +50,11 @@ static void replicator_reset(struct replicator_state *drvdata)
CS_LOCK(drvdata->base);
}
static int replicator_enable(struct coresight_device *csdev, int inport,
int outport)
static int dynamic_replicator_enable(struct replicator_drvdata *drvdata,
int inport, int outport)
{
int rc = 0;
u32 reg;
struct replicator_state *drvdata = dev_get_drvdata(csdev->dev.parent);
switch (outport) {
case 0:
@ -76,21 +75,28 @@ static int replicator_enable(struct coresight_device *csdev, int inport,
rc = coresight_claim_device_unlocked(drvdata->base);
/* Ensure that the outport is enabled. */
if (!rc) {
if (!rc)
writel_relaxed(0x00, drvdata->base + reg);
dev_dbg(drvdata->dev, "REPLICATOR enabled\n");
}
CS_LOCK(drvdata->base);
return rc;
}
static void replicator_disable(struct coresight_device *csdev, int inport,
int outport)
static int replicator_enable(struct coresight_device *csdev, int inport,
int outport)
{
int rc = 0;
struct replicator_drvdata *drvdata = dev_get_drvdata(csdev->dev.parent);
rc = dynamic_replicator_enable(drvdata, inport, outport);
dev_dbg(drvdata->dev, "REPLICATOR enabled\n");
return rc;
}
static void dynamic_replicator_disable(struct replicator_drvdata *drvdata,
int inport, int outport)
{
u32 reg;
struct replicator_state *drvdata = dev_get_drvdata(csdev->dev.parent);
switch (outport) {
case 0:
@ -113,7 +119,14 @@ static void replicator_disable(struct coresight_device *csdev, int inport,
(readl_relaxed(drvdata->base + REPLICATOR_IDFILTER1) == 0xff))
coresight_disclaim_device_unlocked(drvdata->base);
CS_LOCK(drvdata->base);
}
static void replicator_disable(struct coresight_device *csdev, int inport,
int outport)
{
struct replicator_drvdata *drvdata = dev_get_drvdata(csdev->dev.parent);
dynamic_replicator_disable(drvdata, inport, outport);
dev_dbg(drvdata->dev, "REPLICATOR disabled\n");
}
@ -127,7 +140,7 @@ static const struct coresight_ops replicator_cs_ops = {
};
#define coresight_replicator_reg(name, offset) \
coresight_simple_reg32(struct replicator_state, name, offset)
coresight_simple_reg32(struct replicator_drvdata, name, offset)
coresight_replicator_reg(idfilter0, REPLICATOR_IDFILTER0);
coresight_replicator_reg(idfilter1, REPLICATOR_IDFILTER1);
@ -148,52 +161,55 @@ static const struct attribute_group *replicator_groups[] = {
NULL,
};
static int replicator_probe(struct amba_device *adev, const struct amba_id *id)
static int replicator_probe(struct device *dev, struct resource *res)
{
int ret = 0;
struct device *dev = &adev->dev;
struct resource *res = &adev->res;
struct coresight_platform_data *pdata = NULL;
struct replicator_state *drvdata;
struct replicator_drvdata *drvdata;
struct coresight_desc desc = { 0 };
struct device_node *np = adev->dev.of_node;
struct device_node *np = dev->of_node;
void __iomem *base;
if (np) {
pdata = of_get_coresight_platform_data(dev, np);
if (IS_ERR(pdata))
return PTR_ERR(pdata);
adev->dev.platform_data = pdata;
dev->platform_data = pdata;
}
drvdata = devm_kzalloc(dev, sizeof(*drvdata), GFP_KERNEL);
if (!drvdata)
return -ENOMEM;
drvdata->dev = &adev->dev;
drvdata->atclk = devm_clk_get(&adev->dev, "atclk"); /* optional */
drvdata->dev = dev;
drvdata->atclk = devm_clk_get(dev, "atclk"); /* optional */
if (!IS_ERR(drvdata->atclk)) {
ret = clk_prepare_enable(drvdata->atclk);
if (ret)
return ret;
}
/* Validity for the resource is already checked by the AMBA core */
base = devm_ioremap_resource(dev, res);
if (IS_ERR(base)) {
ret = PTR_ERR(base);
goto out_disable_clk;
/*
* Map the device base for dynamic-replicator, which has been
* validated by AMBA core
*/
if (res) {
base = devm_ioremap_resource(dev, res);
if (IS_ERR(base)) {
ret = PTR_ERR(base);
goto out_disable_clk;
}
drvdata->base = base;
desc.groups = replicator_groups;
}
drvdata->base = base;
dev_set_drvdata(dev, drvdata);
desc.type = CORESIGHT_DEV_TYPE_LINK;
desc.subtype.link_subtype = CORESIGHT_DEV_SUBTYPE_LINK_SPLIT;
desc.ops = &replicator_cs_ops;
desc.pdata = adev->dev.platform_data;
desc.dev = &adev->dev;
desc.groups = replicator_groups;
desc.pdata = dev->platform_data;
desc.dev = dev;
drvdata->csdev = coresight_register(&desc);
if (IS_ERR(drvdata->csdev)) {
@ -201,8 +217,8 @@ static int replicator_probe(struct amba_device *adev, const struct amba_id *id)
goto out_disable_clk;
}
replicator_reset(drvdata);
pm_runtime_put(&adev->dev);
dynamic_replicator_reset(drvdata);
pm_runtime_put(dev);
out_disable_clk:
if (ret && !IS_ERR_OR_NULL(drvdata->atclk))
@ -210,10 +226,16 @@ static int replicator_probe(struct amba_device *adev, const struct amba_id *id)
return ret;
}
static int dynamic_replicator_probe(struct amba_device *adev,
const struct amba_id *id)
{
return replicator_probe(&adev->dev, &adev->res);
}
#ifdef CONFIG_PM
static int replicator_runtime_suspend(struct device *dev)
{
struct replicator_state *drvdata = dev_get_drvdata(dev);
struct replicator_drvdata *drvdata = dev_get_drvdata(dev);
if (drvdata && !IS_ERR(drvdata->atclk))
clk_disable_unprepare(drvdata->atclk);
@ -223,7 +245,7 @@ static int replicator_runtime_suspend(struct device *dev)
static int replicator_runtime_resume(struct device *dev)
{
struct replicator_state *drvdata = dev_get_drvdata(dev);
struct replicator_drvdata *drvdata = dev_get_drvdata(dev);
if (drvdata && !IS_ERR(drvdata->atclk))
clk_prepare_enable(drvdata->atclk);
@ -238,7 +260,7 @@ static const struct dev_pm_ops replicator_dev_pm_ops = {
NULL)
};
static const struct amba_id replicator_ids[] = {
static const struct amba_id dynamic_replicator_ids[] = {
{
.id = 0x000bb909,
.mask = 0x000fffff,
@ -251,13 +273,13 @@ static const struct amba_id replicator_ids[] = {
{ 0, 0 },
};
static struct amba_driver replicator_driver = {
static struct amba_driver dynamic_replicator_driver = {
.drv = {
.name = "coresight-dynamic-replicator",
.pm = &replicator_dev_pm_ops,
.suppress_bind_attrs = true,
},
.probe = replicator_probe,
.id_table = replicator_ids,
.probe = dynamic_replicator_probe,
.id_table = dynamic_replicator_ids,
};
builtin_amba_driver(replicator_driver);
builtin_amba_driver(dynamic_replicator_driver);