16 #include <linux/hte.h>
19  * This sample HTE GPIO test driver demonstrates HTE API usage by enabling
29  *		compatible = "nvidia,tegra194-hte-test";
34  *		timestamp-names = "hte-gpio", "hte-i2c-irq";
41  *   HTE for rising edge on gpio_in pin.
48  * - Unloading the driver disables and deallocate the HTE.
59 } hte;  variable
84 	gpiod_set_value(hte.gpio_out, !gpiod_get_value(hte.gpio_out));  in gpio_timer_cb()
85 	mod_timer(&hte.timer, jiffies + msecs_to_jiffies(8000));  in gpio_timer_cb()
97 	{ .compatible = "nvidia,tegra194-hte-test"},
107 	dev_set_drvdata(&pdev->dev, &hte);  in tegra_hte_test_probe()
108 	hte.pdev = &pdev->dev;  in tegra_hte_test_probe()
110 	hte.gpio_out = gpiod_get(&pdev->dev, "out", 0);  in tegra_hte_test_probe()
111 	if (IS_ERR(hte.gpio_out)) {  in tegra_hte_test_probe()
117 	hte.gpio_in = gpiod_get(&pdev->dev, "in", 0);  in tegra_hte_test_probe()
118 	if (IS_ERR(hte.gpio_in)) {  in tegra_hte_test_probe()
124 	ret = gpiod_direction_output(hte.gpio_out, 0);  in tegra_hte_test_probe()
131 	ret = gpiod_direction_input(hte.gpio_in);  in tegra_hte_test_probe()
138 	ret = gpiod_to_irq(hte.gpio_in);  in tegra_hte_test_probe()
145 	hte.gpio_in_irq = ret;  in tegra_hte_test_probe()
148 			  "tegra_hte_gpio_test_isr", &hte);  in tegra_hte_test_probe()
155 	cnt = of_hte_req_count(hte.pdev);  in tegra_hte_test_probe()
161 	hte.desc = devm_kzalloc(hte.pdev, sizeof(*hte.desc) * cnt, GFP_KERNEL);  in tegra_hte_test_probe()
162 	if (!hte.desc) {  in tegra_hte_test_probe()
170 			 * GPIO hte init, line_id and name will be parsed from  in tegra_hte_test_probe()
175 			hte_init_line_attr(&hte.desc[i], 0, 0, NULL,  in tegra_hte_test_probe()
176 					   hte.gpio_in);  in tegra_hte_test_probe()
182 			hte_init_line_attr(&hte.desc[i], 0, 0, NULL, NULL);  in tegra_hte_test_probe()
184 		ret = hte_ts_get(hte.pdev, &hte.desc[i], i);  in tegra_hte_test_probe()
188 		ret = devm_hte_request_ts_ns(hte.pdev, &hte.desc[i],  in tegra_hte_test_probe()
190 					     &hte.desc[i]);  in tegra_hte_test_probe()
195 	timer_setup(&hte.timer, gpio_timer_cb, 0);  in tegra_hte_test_probe()
196 	mod_timer(&hte.timer, jiffies + msecs_to_jiffies(5000));  in tegra_hte_test_probe()
203 		hte_ts_put(&hte.desc[i]);  in tegra_hte_test_probe()
205 	free_irq(hte.gpio_in_irq, &hte);  in tegra_hte_test_probe()
207 	gpiod_put(hte.gpio_in);  in tegra_hte_test_probe()
209 	gpiod_put(hte.gpio_out);  in tegra_hte_test_probe()
219 	free_irq(hte.gpio_in_irq, &hte);  in tegra_hte_test_remove()
220 	gpiod_put(hte.gpio_in);  in tegra_hte_test_remove()
221 	gpiod_put(hte.gpio_out);  in tegra_hte_test_remove()
222 	del_timer_sync(&hte.timer);  in tegra_hte_test_remove()