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Commit d8fd4be6 authored by Ram Chandrasekar's avatar Ram Chandrasekar
Browse files

driver: thermal: lmh-dcvsh: Expose lmh frequency limit sysfs 



LMH driver monitors for the LMH DCVSh throttling frequency and notifies
the scheduler. Expose this value via sysfs for the userspace to read the
limits frequency limit.

Change-Id: I59abdaf7ff702fc27667b1d4c350fe604f6bc4d5
Signed-off-by: default avatarRam Chandrasekar <rkumbako@codeaurora.org>
parent 67fd1b8c

drivers/thermal/qcom/msm_lmh_dcvs.c

+16 −0
Original line number Diff line number Diff line
@@ -103,6 +103,7 @@ struct limits_dcvs_hw { 
	unsigned long max_freq;

	unsigned long min_freq;

	unsigned long hw_freq_limit;

	struct device_attribute lmh_freq_attr;

	struct list_head list;

	atomic_t is_irq_enabled;

	struct mutex access_lock;
@@ -475,6 +476,17 @@ static void limits_isens_vref_ldo_init(struct platform_device *pdev, 
	}

}



static ssize_t

lmh_freq_limit_show(struct device *dev, struct device_attribute *devattr,

		       char *buf)

{

	struct limits_dcvs_hw *hw = container_of(devattr,

						struct limits_dcvs_hw,

						lmh_freq_attr);



	return snprintf(buf, PAGE_SIZE, "%lu\n", hw->hw_freq_limit);

}



static int limits_dcvs_probe(struct platform_device *pdev)

{

	int ret;
@@ -631,6 +643,10 @@ static int limits_dcvs_probe(struct platform_device *pdev) 
		goto probe_exit;

	}

	limits_isens_vref_ldo_init(pdev, hw);

	hw->lmh_freq_attr.attr.name = "lmh_freq_limit";

	hw->lmh_freq_attr.show = lmh_freq_limit_show;

	hw->lmh_freq_attr.attr.mode = 0444;

	device_create_file(&pdev->dev, &hw->lmh_freq_attr);



probe_exit:

	mutex_lock(&lmh_dcvs_list_access);