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Commit eeb69ec8 authored by Fei Mao's avatar Fei Mao
Browse files

input: touchscreen: nt36xxx: Add touch selection support 



Support multiple touch drivers and then select proper one for
current device when driver probe stage.

Change-Id: I3ac509c56f02c24ff2450134fc85f11454610d2c
Signed-off-by: default avatarFei Mao <feim1@codeaurora.org>
parent ad6d422c

drivers/input/touchscreen/nt36xxx/nt36xxx.c

+32 −13
Original line number Diff line number Diff line
@@ -1215,39 +1215,58 @@ static int nvt_ts_check_dt(struct device_node *np) 
		of_node_put(node);

		if (!IS_ERR(panel)) {

			active_panel = panel;

			pr_err(" %s:find\n", __func__);

			NVT_LOG(" %s:find\n", __func__);

			return 0;

		}

	}



	pr_err(" %s: not find\n", __func__);

	NVT_ERR(" %s: not find\n", __func__);

	return -ENODEV;

}



static int nvt_ts_check_default_tp(struct device_node *dt, const char *prop)

{

	const char *active_tp[3 + 1] = {NULL, NULL, NULL, NULL};

	int count;

	int ret;

	const char **active_tp = NULL;

	int count, tmp, score = 0;

	const char *active;

	int ret, i;



	count = of_property_count_strings(dt->parent, prop);

	if (count <= 0 || count > 3)

		return -ENODEV;



	active_tp = kcalloc(count, sizeof(char *),  GFP_KERNEL);

	if (!active_tp) {

		NVT_ERR("FTS alloc failed\n");

		return -ENOMEM;

	}



	ret = of_property_read_string_array(dt->parent, prop,

			(const char **)&active_tp, count);

			active_tp, count);

	if (ret < 0) {

		pr_err(" %s:fail to read %s %d\n", __func__, prop, ret);

		return -ENODEV;

		NVT_ERR("fail to read %s %d\n", prop, ret);

		ret = -ENODEV;

		goto out;

	}



	if (!of_device_compatible_match(dt, active_tp)) {

		pr_err(" %s:no match compatible: %s, %s %s\n",

			__func__, active_tp[0]);

		return -ENODEV;

	for (i = 0; i < count; i++) {

		active = active_tp[i];

		if (active != NULL) {

			tmp = of_device_is_compatible(dt, active);

			if (tmp > 0)

				score++;

		}

	}



	return 0;

	if (score <= 0) {

		NVT_ERR("not match this driver\n");

		ret = -ENODEV;

		goto out;

	}

	ret = 0;

out:

	kfree(active_tp);

	return ret;

}

#endif