---
Changes in V4:
- Added pm_runtime_disable() in replicator_platform_probe()
- Changed replicator_platform_remove() for platform_driver->remove_new()
drivers/acpi/arm64/amba.c | 1 -
.../coresight/coresight-replicator.c | 81 ++++++++++---------
2 files changed, 43 insertions(+), 39 deletions(-)
diff --git a/drivers/acpi/arm64/amba.c b/drivers/acpi/arm64/amba.c
index 171b5c2c7edd..270f4e3819a2 100644
--- a/drivers/acpi/arm64/amba.c
+++ b/drivers/acpi/arm64/amba.c
@@ -27,7 +27,6 @@ static const struct acpi_device_id amba_id_list[] = {
{"ARMHC503", 0}, /* ARM CoreSight Debug */
{"ARMHC979", 0}, /* ARM CoreSight TPIU */
{"ARMHC97C", 0}, /* ARM CoreSight SoC-400 TMC, SoC-600 ETF/ETB */
- {"ARMHC98D", 0}, /* ARM CoreSight Dynamic Replicator */
{"ARMHC9CA", 0}, /* ARM CoreSight CATU */
{"ARMHC9FF", 0}, /* ARM CoreSight Dynamic Funnel */
{"", 0},
diff --git a/drivers/hwtracing/coresight/coresight-replicator.c
b/drivers/hwtracing/coresight/coresight-replicator.c
index 91d93060dda5..9b5f52725f43 100644
--- a/drivers/hwtracing/coresight/coresight-replicator.c
+++ b/drivers/hwtracing/coresight/coresight-replicator.c
@@ -31,6 +31,7 @@ DEFINE_CORESIGHT_DEVLIST(replicator_devs,
"replicator");
* @base: memory mapped base address for this component. Also
indicates
* whether this one is programmable or not.
* @atclk: optional clock for the core parts of the replicator.
+ * @pclk: APB clock if present, otherwise NULL
* @csdev: component vitals needed by the framework
* @spinlock: serialize enable/disable operations.
* @check_idfilter_val: check if the context is lost upon clock
removal.
@@ -38,6 +39,7 @@ DEFINE_CORESIGHT_DEVLIST(replicator_devs,
"replicator");
struct replicator_drvdata {
void __iomem *base;
struct clk *atclk;
+ struct clk *pclk;
struct coresight_device *csdev;
spinlock_t spinlock;
bool check_idfilter_val;
@@ -243,6 +245,10 @@ static int replicator_probe(struct device *dev,
struct resource *res)
return ret;
}
+ drvdata->pclk = coresight_get_enable_apb_pclk(dev);
+ if (IS_ERR(drvdata->pclk))
+ return -ENODEV;
+
/*
* Map the device base for dynamic-replicator, which has been
* validated by AMBA core
@@ -285,7 +291,6 @@ static int replicator_probe(struct device *dev,
struct resource *res)
}
replicator_reset(drvdata);
- pm_runtime_put(dev);
out_disable_clk:
if (ret && !IS_ERR_OR_NULL(drvdata->atclk))
@@ -301,29 +306,33 @@ static int replicator_remove(struct device *dev)
return 0;
}
-static int static_replicator_probe(struct platform_device *pdev)
+static int replicator_platform_probe(struct platform_device *pdev)
{
+ struct resource *res = platform_get_resource(pdev,
IORESOURCE_MEM, 0);
int ret;
pm_runtime_get_noresume(&pdev->dev);
pm_runtime_set_active(&pdev->dev);
pm_runtime_enable(&pdev->dev);
- /* Static replicators do not have programming base */
- ret = replicator_probe(&pdev->dev, NULL);
-
- if (ret) {
- pm_runtime_put_noidle(&pdev->dev);
+ ret = replicator_probe(&pdev->dev, res);
+ pm_runtime_put(&pdev->dev);
+ if (ret)
pm_runtime_disable(&pdev->dev);
- }
return ret;
}
-static void static_replicator_remove(struct platform_device *pdev)
+static void replicator_platform_remove(struct platform_device *pdev)
{
- replicator_remove(&pdev->dev);
+ struct replicator_drvdata *drvdata = dev_get_drvdata(&pdev->dev);
+
+ if (drvdata)
+ replicator_remove(&pdev->dev);
+
pm_runtime_disable(&pdev->dev);
+ if (drvdata && !IS_ERR_OR_NULL(drvdata->pclk))
+ clk_put(drvdata->pclk);
}
#ifdef CONFIG_PM
@@ -334,6 +343,8 @@ static int replicator_runtime_suspend(struct
device *dev)
if (drvdata && !IS_ERR(drvdata->atclk))
clk_disable_unprepare(drvdata->atclk);
+ if (drvdata && !IS_ERR_OR_NULL(drvdata->pclk))
+ clk_disable_unprepare(drvdata->pclk);
return 0;
}
@@ -344,6 +355,8 @@ static int replicator_runtime_resume(struct device
*dev)
if (drvdata && !IS_ERR(drvdata->atclk))
clk_prepare_enable(drvdata->atclk);
+ if (drvdata && !IS_ERR_OR_NULL(drvdata->pclk))
+ clk_prepare_enable(drvdata->pclk);
return 0;
}
#endif
@@ -353,31 +366,32 @@ static const struct dev_pm_ops
replicator_dev_pm_ops = {
replicator_runtime_resume, NULL)
};
-static const struct of_device_id static_replicator_match[] = {
+static const struct of_device_id replicator_match[] = {
{.compatible = "arm,coresight-replicator"},
{.compatible = "arm,coresight-static-replicator"},
{}
};
-MODULE_DEVICE_TABLE(of, static_replicator_match);
+MODULE_DEVICE_TABLE(of, replicator_match);
#ifdef CONFIG_ACPI
-static const struct acpi_device_id static_replicator_acpi_ids[] = {
+static const struct acpi_device_id replicator_acpi_ids[] = {
{"ARMHC985", 0}, /* ARM CoreSight Static Replicator */
+ {"ARMHC98D", 0}, /* ARM CoreSight Dynamic Replicator */
{}
};
-MODULE_DEVICE_TABLE(acpi, static_replicator_acpi_ids);
+MODULE_DEVICE_TABLE(acpi, replicator_acpi_ids);
#endif
-static struct platform_driver static_replicator_driver = {
- .probe = static_replicator_probe,
- .remove_new = static_replicator_remove,
+static struct platform_driver replicator_driver = {
+ .probe = replicator_platform_probe,
+ .remove_new = replicator_platform_remove,
.driver = {
- .name = "coresight-static-replicator",
+ .name = "coresight-replicator",
/* THIS_MODULE is taken care of by
platform_driver_register() */
- .of_match_table = of_match_ptr(static_replicator_match),
- .acpi_match_table = ACPI_PTR(static_replicator_acpi_ids),
+ .of_match_table = of_match_ptr(replicator_match),
+ .acpi_match_table = ACPI_PTR(replicator_acpi_ids),
.pm = &replicator_dev_pm_ops,
.suppress_bind_attrs = true,
},
@@ -386,7 +400,13 @@ static struct platform_driver
static_replicator_driver = {
static int dynamic_replicator_probe(struct amba_device *adev,
const struct amba_id *id)
{
- return replicator_probe(&adev->dev, &adev->res);
+ int ret;
+
+ ret = replicator_probe(&adev->dev, &adev->res);
+ if (!ret)
+ pm_runtime_put(&adev->dev);
+
+ return ret;
}
static void dynamic_replicator_remove(struct amba_device *adev)
@@ -416,27 +436,12 @@ static struct amba_driver
dynamic_replicator_driver = {
static int __init replicator_init(void)
{
- int ret;
-
- ret = platform_driver_register(&static_replicator_driver);
- if (ret) {
- pr_info("Error registering platform driver\n");
- return ret;
- }
-
- ret = amba_driver_register(&dynamic_replicator_driver);
- if (ret) {
- pr_info("Error registering amba driver\n");
- platform_driver_unregister(&static_replicator_driver);
- }
-
- return ret;
+ return coresight_init_driver("replicator",
&dynamic_replicator_driver, &replicator_driver);
}
static void __exit replicator_exit(void)
{
- platform_driver_unregister(&static_replicator_driver);
- amba_driver_unregister(&dynamic_replicator_driver);
+ coresight_remove_driver(&dynamic_replicator_driver,
&replicator_driver);
}
module_init(replicator_init);
