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Commit 52a14338 authored by Tushar Nimkar's avatar Tushar Nimkar
Browse files

soc: qcom: Add support to read apps stats from smem 



The trustzone will write apps stats into smem. This change
adds support to read and display it when rpmh_unit_base is
not present.

Change-Id: Ifc3566018fd6722eb2d818d8d81370dc1f8cea19
Signed-off-by: default avatarTushar Nimkar <tnimkar@codeaurora.org>
parent 98ed1806

drivers/soc/qcom/Kconfig

+0 −1
Original line number Diff line number Diff line
@@ -909,7 +909,6 @@ endif # MSM_PM 


config QTI_RPM_STATS_LOG

	tristate "Qualcomm Technologies RPM Stats Driver"

	depends on QCOM_RPMH

	help

	  This option enables a driver which reads RPM messages from a shared

	  memory location. These messages provide statistical information about

drivers/soc/qcom/rpmh_master_stat.c

+10 −8
Original line number Diff line number Diff line
@@ -35,6 +35,7 @@ enum master_smem_id { 
	GPU,

	DISPLAY,

	SLPI_ISLAND = 613,

	APSS = 631,

};



enum master_pid {
@@ -63,6 +64,7 @@ struct msm_rpmh_master_data { 
};



static const struct msm_rpmh_master_data rpmh_masters[] = {

	{"APSS", APSS, QCOM_SMEM_HOST_ANY},

	{"MPSS", MPSS, PID_MPSS},

	{"WPSS", MPSS, PID_WPSS},

	{"ADSP", ADSP, PID_ADSP},
@@ -134,8 +136,10 @@ static ssize_t msm_rpmh_master_stats_show(struct kobject *kobj, 


	/* First Read APSS master stats */



	if (rpmh_unit_base)

		length = msm_rpmh_master_stats_print_data(buf, PAGE_SIZE,

						&apss_master_stats, "APSS");

							  &apss_master_stats,

							  "APSS");



	/* Read SMEM data written by other masters */
@@ -229,17 +233,14 @@ static int msm_rpmh_master_stats_probe(struct platform_device *pdev) 


	rpmh_unit_base = of_iomap(pdev->dev.of_node, 0);

	if (!rpmh_unit_base) {

		pr_err("Failed to get rpmh_unit_base\n");

		ret = -ENOMEM;

		goto fail_iomap;

		pr_err("Failed to get rpmh_unit_base or rpm based target\n");

		rpmh_unit_base = NULL;

	}



	apss_master_stats.version_id = 0x1;

	platform_set_drvdata(pdev, prvdata);

	return ret;



fail_iomap:

	sysfs_remove_file(prvdata->kobj, &prvdata->ka.attr);

fail_sysfs:

	kobject_put(prvdata->kobj);

	return ret;
@@ -255,6 +256,7 @@ static int msm_rpmh_master_stats_remove(struct platform_device *pdev) 
	sysfs_remove_file(prvdata->kobj, &prvdata->ka.attr);

	kobject_put(prvdata->kobj);

	platform_set_drvdata(pdev, NULL);

	if (rpmh_unit_base)

		iounmap(rpmh_unit_base);

	rpmh_unit_base = NULL;