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Commit 25965f84 authored by Ram Chandrasekar's avatar Ram Chandrasekar
Browse files

msm: mct: Control the MCT enable/disable notification sent to PMIC 



Add a module param to control the MCT driver to send or not
send the MCT enable/disable notification to PMIC regulators.

This notification control parameter is disabled by default.
To enable the MCT enable/disable notification to be sent to
PMIC, use the below method commands,
echo N > /sys/module/mct/parameters/enable
echo Y > /sys/module/mct/parameters/notify_pmic
echo Y > /sys/module/mct/parameters/enable

CRs-Fixed: 623441
Change-Id: I222f417412c656769babf36e8fbcb0016ae5c4d6
Signed-off-by: default avatarRam Chandrasekar <rkumbako@codeaurora.org>
parent 6d5024f9

drivers/soc/qcom/mct.c

+13 −1
Original line number Diff line number Diff line
@@ -36,7 +36,7 @@ 
#define MCT_TYPE_NAME "msm_mct"



static struct kobject *mct_kobj;

static bool mct_boot_enable, mct_deferred;

static bool mct_boot_enable, mct_deferred, mct_notify_pmic;

static uint32_t mct_ulim, mct_dcnt, mct_wr, mct_vxwr, mct_vlswr, mct_vaw;



/*
@@ -304,6 +304,9 @@ static void mct_update_regulator(uint32_t cpu_index) 
	if (!per_cpu(gmct, cpu_index)->mct_regulator)

		return;



	if (!mct_notify_pmic)

		return;



	if (enable && !per_cpu(gmct, cpu_index)->mct_reg_enabled)

		ret = regulator_enable(

			per_cpu(gmct, cpu_index)->mct_regulator);
@@ -503,6 +506,11 @@ static int mct_enable_show(char *buf, const struct kernel_param *kp) 
	return validate_and_show(MCT_ENABLE, buf);

}



static struct kernel_param_ops pmic_notify_ops = {

	.set = param_set_bool,

	.get = param_get_bool,

};



static struct kernel_param_ops module_ops = {

	.set = mct_enable_store,

	.get = mct_enable_show,
@@ -511,6 +519,9 @@ static struct kernel_param_ops module_ops = { 
module_param_cb(enable, &module_ops, &mct_boot_enable, 0644);

MODULE_PARM_DESC(enable, "Enable maximum current throttling feature");



module_param_cb(notify_pmic, &pmic_notify_ops, &mct_notify_pmic, 0644);

MODULE_PARM_DESC(enable, "Enable/disable MCT notification to PMIC");



/*

 * MCT device attributes

 */
@@ -835,6 +846,7 @@ static int mct_probe(struct platform_device *pdev) 
		mct_dcnt = MCT_DEFAULT_DCNT;

	}

	mct_boot_enable = true;

	mct_notify_pmic = false;



deferred_entry:

	/* probe_deferrable_property will not return any error other than