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soc: qcom: proxy_consumer: Add support for amba_driver

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The proxy consumer driver currently only supports proxy
probing for platform bus. However, there's a need to
proxy-probe coresight devices, which falls under ABMA bus.
Hence, extend the driver to support proxy probing for
"struct amba_driver" and add coresight-etm ids to the list.

Change-Id: I48da20ea18f61b5cc82ae0616a75c23af32481a2
Signed-off-by: Raghavendra Rao Ananta <rananta@codeaurora.org>
This commit is contained in:
Raghavendra Rao Ananta 2020-09-21 17:52:28 -07:00
commit 74672e6b27
1 changed files with 73 additions and 1 deletions
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74
drivers/soc/qcom/qcom_proxy_of_consumer.c
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@ -6,6 +6,14 @@
#include <linux/module.h>
#include <linux/mod_devicetable.h>
#include <linux/platform_device.h>
#include <linux/pm_runtime.h>
#include <linux/amba/bus.h>
#define QCOM_PROXY_CONSUMER_AMBA_ID(pid) \
{ \
.id = pid, \
.mask = 0x000fffff, \
}
/*
* of_match table that contains a list of compatible strings for the
@ -22,12 +30,42 @@ static const struct of_device_id qcom_proxy_of_consumer_match[] = {
{}
};
static const struct amba_id qcom_proxy_amba_of_consumer_match[] = {
#if !IS_ENABLED(CONFIG_CORESIGHT_SOURCE_ETM4X)
QCOM_PROXY_CONSUMER_AMBA_ID(0x000bb95d), /* Cortex-A53 */
QCOM_PROXY_CONSUMER_AMBA_ID(0x000bb95e), /* Cortex-A57 */
QCOM_PROXY_CONSUMER_AMBA_ID(0x000bb95a), /* Cortex-A72 */
QCOM_PROXY_CONSUMER_AMBA_ID(0x000bb959), /* Cortex-A73 */
QCOM_PROXY_CONSUMER_AMBA_ID(0x000bb9da), /* Cortex-A35 */
QCOM_PROXY_CONSUMER_AMBA_ID(0x000f0205), /* QCOM Kryo */
QCOM_PROXY_CONSUMER_AMBA_ID(0x000f0211), /* QCOM Kryo */
QCOM_PROXY_CONSUMER_AMBA_ID(0x000bb802), /* QCOM Kryo 385 Cortex-A55 */
QCOM_PROXY_CONSUMER_AMBA_ID(0x000bb803), /* QCOM Kryo 385 Cortex-A75 */
#endif
{}
};
static int qcom_proxy_of_consumer_probe(struct platform_device *pdev)
{
dev_dbg(&pdev->dev, "Proxy probing\n");
return 0;
}
static int qcom_proxy_amba_of_consumer_probe(struct amba_device *adev,
const struct amba_id *id)
{
dev_dbg(&adev->dev, "Proxy probing\n");
/* Before calling this probe, the amba framework votes for the clk
* by default. It removes the vote only during the runtime suspend
* of the device. Hence, explicilty decrement the usage count of
* the device for the suspend to happen.
*/
pm_runtime_put(&adev->dev);
return 0;
}
static struct platform_driver qcom_proxy_of_consumer_driver = {
.probe = qcom_proxy_of_consumer_probe,
.driver = {
@ -36,7 +74,41 @@ static struct platform_driver qcom_proxy_of_consumer_driver = {
},
};
module_platform_driver(qcom_proxy_of_consumer_driver);
static struct amba_driver qcom_proxy_amba_of_consumer_driver = {
.probe = qcom_proxy_amba_of_consumer_probe,
.id_table = qcom_proxy_amba_of_consumer_match,
.drv = {
.name = "qcom_proxy_amba_of_consumer",
},
};
static int __init qcom_proxy_of_init(void)
{
int ret;
ret = platform_driver_register(&qcom_proxy_of_consumer_driver);
if (ret < 0)
return ret;
ret = amba_driver_register(&qcom_proxy_amba_of_consumer_driver);
if (ret < 0)
goto amba_fail;
return 0;
amba_fail:
platform_driver_unregister(&qcom_proxy_of_consumer_driver);
return ret;
}
static void __exit qcom_proxy_of_exit(void)
{
amba_driver_unregister(&qcom_proxy_amba_of_consumer_driver);
platform_driver_unregister(&qcom_proxy_of_consumer_driver);
}
module_init(qcom_proxy_of_init);
module_exit(qcom_proxy_of_exit);
MODULE_LICENSE("GPL v2");
MODULE_DESCRIPTION("Qualcomm Technologies, of proxy consumer driver");