11 #include <media/cec-pin.h>
35 	struct cec_gpio *cec = cec_get_drvdata(adap);  in cec_gpio_read()  local
37 	if (cec->cec_is_low)  in cec_gpio_read()
39 	return gpiod_get_value(cec->cec_gpio);  in cec_gpio_read()
44 	struct cec_gpio *cec = cec_get_drvdata(adap);  in cec_gpio_high()  local
46 	if (!cec->cec_is_low)  in cec_gpio_high()
48 	cec->cec_is_low = false;  in cec_gpio_high()
49 	gpiod_set_value(cec->cec_gpio, 1);  in cec_gpio_high()
54 	struct cec_gpio *cec = cec_get_drvdata(adap);  in cec_gpio_low()  local
56 	if (cec->cec_is_low)  in cec_gpio_low()
58 	if (WARN_ON_ONCE(cec->cec_have_irq))  in cec_gpio_low()
59 		free_irq(cec->cec_irq, cec);  in cec_gpio_low()
60 	cec->cec_have_irq = false;  in cec_gpio_low()
61 	cec->cec_is_low = true;  in cec_gpio_low()
62 	gpiod_set_value(cec->cec_gpio, 0);  in cec_gpio_low()
67 	struct cec_gpio *cec = priv;  in cec_hpd_gpio_irq_handler_thread()  local
69 	cec_queue_pin_hpd_event(cec->adap, cec->hpd_is_high, cec->hpd_ts);  in cec_hpd_gpio_irq_handler_thread()
75 	struct cec_gpio *cec = priv;  in cec_5v_gpio_irq_handler()  local
76 	bool is_high = gpiod_get_value(cec->v5_gpio);  in cec_5v_gpio_irq_handler()
78 	if (is_high == cec->v5_is_high)  in cec_5v_gpio_irq_handler()
80 	cec->v5_ts = ktime_get();  in cec_5v_gpio_irq_handler()
81 	cec->v5_is_high = is_high;  in cec_5v_gpio_irq_handler()
87 	struct cec_gpio *cec = priv;  in cec_5v_gpio_irq_handler_thread()  local
89 	cec_queue_pin_5v_event(cec->adap, cec->v5_is_high, cec->v5_ts);  in cec_5v_gpio_irq_handler_thread()
95 	struct cec_gpio *cec = priv;  in cec_hpd_gpio_irq_handler()  local
96 	bool is_high = gpiod_get_value(cec->hpd_gpio);  in cec_hpd_gpio_irq_handler()
98 	if (is_high == cec->hpd_is_high)  in cec_hpd_gpio_irq_handler()
100 	cec->hpd_ts = ktime_get();  in cec_hpd_gpio_irq_handler()
101 	cec->hpd_is_high = is_high;  in cec_hpd_gpio_irq_handler()
107 	struct cec_gpio *cec = priv;  in cec_gpio_irq_handler()  local
109 	cec_pin_changed(cec->adap, gpiod_get_value(cec->cec_gpio));  in cec_gpio_irq_handler()
115 	struct cec_gpio *cec = cec_get_drvdata(adap);  in cec_gpio_enable_irq()  local
117 	if (cec->cec_have_irq)  in cec_gpio_enable_irq()
120 	if (request_irq(cec->cec_irq, cec_gpio_irq_handler,  in cec_gpio_enable_irq()
122 			adap->name, cec))  in cec_gpio_enable_irq()
124 	cec->cec_have_irq = true;  in cec_gpio_enable_irq()
130 	struct cec_gpio *cec = cec_get_drvdata(adap);  in cec_gpio_disable_irq()  local
132 	if (cec->cec_have_irq)  in cec_gpio_disable_irq()
133 		free_irq(cec->cec_irq, cec);  in cec_gpio_disable_irq()
134 	cec->cec_have_irq = false;  in cec_gpio_disable_irq()
139 	struct cec_gpio *cec = cec_get_drvdata(adap);  in cec_gpio_status()  local
141 	seq_printf(file, "mode: %s\n", cec->cec_is_low ? "low-drive" : "read");  in cec_gpio_status()
142 	if (cec->cec_have_irq)  in cec_gpio_status()
143 		seq_printf(file, "using irq: %d\n", cec->cec_irq);  in cec_gpio_status()
144 	if (cec->hpd_gpio)  in cec_gpio_status()
146 			   cec->hpd_is_high ? "high" : "low");  in cec_gpio_status()
147 	if (cec->v5_gpio)  in cec_gpio_status()
149 			   cec->v5_is_high ? "high" : "low");  in cec_gpio_status()
154 	struct cec_gpio *cec = cec_get_drvdata(adap);  in cec_gpio_read_hpd()  local
156 	if (!cec->hpd_gpio)  in cec_gpio_read_hpd()
158 	return gpiod_get_value(cec->hpd_gpio);  in cec_gpio_read_hpd()
163 	struct cec_gpio *cec = cec_get_drvdata(adap);  in cec_gpio_read_5v()  local
165 	if (!cec->v5_gpio)  in cec_gpio_read_5v()
167 	return gpiod_get_value(cec->v5_gpio);  in cec_gpio_read_5v()
190 	struct cec_gpio *cec;  in cec_gpio_probe()  local
193 	cec = devm_kzalloc(dev, sizeof(*cec), GFP_KERNEL);  in cec_gpio_probe()
194 	if (!cec)  in cec_gpio_probe()
197 	cec->dev = dev;  in cec_gpio_probe()
199 	cec->cec_gpio = devm_gpiod_get(dev, "cec", GPIOD_OUT_HIGH_OPEN_DRAIN);  in cec_gpio_probe()
200 	if (IS_ERR(cec->cec_gpio))  in cec_gpio_probe()
201 		return PTR_ERR(cec->cec_gpio);  in cec_gpio_probe()
202 	cec->cec_irq = gpiod_to_irq(cec->cec_gpio);  in cec_gpio_probe()
204 	cec->hpd_gpio = devm_gpiod_get_optional(dev, "hpd", GPIOD_IN);  in cec_gpio_probe()
205 	if (IS_ERR(cec->hpd_gpio))  in cec_gpio_probe()
206 		return PTR_ERR(cec->hpd_gpio);  in cec_gpio_probe()
208 	cec->v5_gpio = devm_gpiod_get_optional(dev, "v5", GPIOD_IN);  in cec_gpio_probe()
209 	if (IS_ERR(cec->v5_gpio))  in cec_gpio_probe()
210 		return PTR_ERR(cec->v5_gpio);  in cec_gpio_probe()
212 	cec->adap = cec_pin_allocate_adapter(&cec_gpio_pin_ops,  in cec_gpio_probe()
213 		cec, pdev->name, CEC_CAP_DEFAULTS | CEC_CAP_PHYS_ADDR |  in cec_gpio_probe()
215 	if (IS_ERR(cec->adap))  in cec_gpio_probe()
216 		return PTR_ERR(cec->adap);  in cec_gpio_probe()
218 	if (cec->hpd_gpio) {  in cec_gpio_probe()
219 		cec->hpd_irq = gpiod_to_irq(cec->hpd_gpio);  in cec_gpio_probe()
220 		ret = devm_request_threaded_irq(dev, cec->hpd_irq,  in cec_gpio_probe()
225 			"hpd-gpio", cec);  in cec_gpio_probe()
230 	if (cec->v5_gpio) {  in cec_gpio_probe()
231 		cec->v5_irq = gpiod_to_irq(cec->v5_gpio);  in cec_gpio_probe()
232 		ret = devm_request_threaded_irq(dev, cec->v5_irq,  in cec_gpio_probe()
237 			"v5-gpio", cec);  in cec_gpio_probe()
242 	ret = cec_register_adapter(cec->adap, &pdev->dev);  in cec_gpio_probe()
244 		cec_delete_adapter(cec->adap);  in cec_gpio_probe()
248 	platform_set_drvdata(pdev, cec);  in cec_gpio_probe()
254 	struct cec_gpio *cec = platform_get_drvdata(pdev);  in cec_gpio_remove()  local
256 	cec_unregister_adapter(cec->adap);  in cec_gpio_remove()
262 		.compatible	= "cec-gpio",
272 		.name		= "cec-gpio",
281 MODULE_DESCRIPTION("CEC GPIO driver");