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Commit 74672e6b authored by Raghavendra Rao Ananta's avatar Raghavendra Rao Ananta
Browse files

soc: qcom: proxy_consumer: Add support for amba_driver 



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: default avatarRaghavendra Rao Ananta <rananta@codeaurora.org>
parent 87306802

drivers/soc/qcom/qcom_proxy_of_consumer.c

+73 −1
Original line number Diff line number Diff line
@@ -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");