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 --- .../coresight/coresight-dynamic-replicator.c | 104 +++++++++++++-------- 1 file changed, 63 insertions(+), 41 deletions(-)
diff --git a/drivers/hwtracing/coresight/coresight-dynamic-replicator.c b/drivers/hwtracing/coresight/coresight-dynamic-replicator.c index fe176b9..b7d7c41 100644 --- a/drivers/hwtracing/coresight/coresight-dynamic-replicator.c +++ b/drivers/hwtracing/coresight/coresight-dynamic-replicator.c @@ -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);