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Commit 59b91d78 authored by Ram Chandrasekar's avatar Ram Chandrasekar
Browse files

msm: lmh_lite: Switch to default profile during init 



Different LMH hardware can have different default profile to
operate on, when HLOS LMH driver is initialized. Add support
in the driver to differentiate the hardwares based on the
compatible string.

The driver after determining the default profile to
operate, it will switch to that profile.

Change-Id: I3a61ba8d0d21aed1526d8012ebd30013e851ee80
Signed-off-by: default avatarRam Chandrasekar <rkumbako@codeaurora.org>
parent 09ea24f6

Documentation/devicetree/bindings/arm/msm/limits_lmh.txt

+5 −3
Original line number Diff line number Diff line
@@ -14,7 +14,9 @@ Device/Asic specific properties: 
		trim error in LMH hardware.



Required parameters:

- compatible:	Must be "qcom,lmh"

- compatible: Must be either "qcom,lmh" or "qcom,lmh_v1".

		The driver based on the compatible string will decide

		the default profile.

- interrupts: LMH Lite hardware interrupt details.



Example:
@@ -29,6 +31,6 @@ qcom,lmh { 
Or for asics that don't have trim err:



qcom,lmh {

	compatible = "qcom,lmh";

	compatible = "qcom,lmh_v1";

	interrupts = <0 332 4>;

};

drivers/thermal/lmh_lite.c

+38 −0
Original line number Diff line number Diff line
@@ -165,6 +165,17 @@ struct lmh_sensor_data { 
	struct list_head		list_ptr;

};



struct lmh_default_data {

	uint32_t			default_profile;

};



static struct lmh_default_data		lmh_lite_data = {

	.default_profile = 0,

};

static struct lmh_default_data		lmh_v1_data = {

	.default_profile = 1,

};

static struct lmh_default_data		*lmh_hw_data;

static struct lmh_driver_data		*lmh_data;

static DECLARE_RWSEM(lmh_sensor_access);

static DEFINE_MUTEX(lmh_sensor_read);
@@ -807,6 +818,13 @@ static int lmh_get_dev_info(void) 
		goto get_dev_exit;

	lmh_data->dev_info.level_ct = size;

	lmh_data->dev_info.curr_level = LMH_DEFAULT_PROFILE;

	ret = lmh_set_level(&lmh_data->dev_info.dev_ops,

		lmh_hw_data->default_profile);

	if (ret) {

		pr_err("Error switching to default profile%d, err:%d\n",

			lmh_data->dev_info.curr_level, ret);

		goto get_dev_exit;

	}



get_dev_exit:

	if (ret)
@@ -1168,6 +1186,11 @@ static int lmh_remove(struct platform_device *pdev) 
static struct of_device_id lmh_match[] = {

	{

		.compatible = "qcom,lmh",

		.data = (void *)&lmh_lite_data,

	},

	{

		.compatible = "qcom,lmh_v1",

		.data = (void *)&lmh_v1_data,

	},

	{},

};
@@ -1184,6 +1207,21 @@ static struct platform_driver lmh_driver = { 


int __init lmh_init_driver(void)

{

	struct device_node *comp_node;



	comp_node = of_find_matching_node(NULL, lmh_match);

	if (comp_node) {

		const struct of_device_id *match = of_match_node(lmh_match,

							comp_node);

		if (!match) {

			pr_err("Couldnt find a match\n");

			goto plt_register;

		}

		lmh_hw_data = (struct lmh_default_data *)match->data;

		of_node_put(comp_node);

	}



plt_register:

	return platform_driver_register(&lmh_driver);

}