1 // SPDX-License-Identifier: GPL-2.0-or-later
3  * PlayStation 1/2 joypads via SPI interface Driver
11  * 1: DAT -> MISO (pullup with 1k owm to 3.3V)
12  * 2: CMD -> MOSI
13  * 3: 9V (for motor, if not use N.C.)
16  * 6: Attention -> CS(SS)
17  * 7: SCK -> SCK
19  * 9: ACK -> N.C.
78 		.tx_buf		= pad->sendbuf,  in psxpad_command()
79 		.rx_buf		= pad->response,  in psxpad_command()
84 	err = spi_sync_transfer(pad->spi, &xfers, 1);  in psxpad_command()
86 		dev_err(&pad->spi->dev,  in psxpad_command()
101 	pad->motor1enable = motor1enable;  in psxpad_control_motor()
102 	pad->motor2enable = motor2enable;  in psxpad_control_motor()
104 	memcpy(pad->sendbuf, PSX_CMD_ENTER_CFG, sizeof(PSX_CMD_ENTER_CFG));  in psxpad_control_motor()
107 		dev_err(&pad->spi->dev,  in psxpad_control_motor()
113 	memcpy(pad->sendbuf, PSX_CMD_ENABLE_MOTOR,  in psxpad_control_motor()
115 	pad->sendbuf[3] = pad->motor1enable ? 0x00 : 0xFF;  in psxpad_control_motor()
116 	pad->sendbuf[4] = pad->motor2enable ? 0x80 : 0xFF;  in psxpad_control_motor()
119 		dev_err(&pad->spi->dev,  in psxpad_control_motor()
120 			"%s: failed to enable motor mode: %d\n",  in psxpad_control_motor()
125 	memcpy(pad->sendbuf, PSX_CMD_EXIT_CFG, sizeof(PSX_CMD_EXIT_CFG));  in psxpad_control_motor()
128 		dev_err(&pad->spi->dev,  in psxpad_control_motor()
138 	pad->motor1level = motor1level ? 0xFF : 0x00;  in psxpad_set_motor_level()
139 	pad->motor2level = REVERSE_BIT(motor2level);  in psxpad_set_motor_level()
147 	switch (effect->type) {  in psxpad_spi_play_effect()
150 			(effect->u.rumble.weak_magnitude >> 8) & 0xFFU,  in psxpad_spi_play_effect()
151 			(effect->u.rumble.strong_magnitude >> 8) & 0xFFU);  in psxpad_spi_play_effect()
162 	input_set_capability(pad->idev, EV_FF, FF_RUMBLE);  in psxpad_spi_init_ff()
164 	err = input_ff_create_memless(pad->idev, NULL, psxpad_spi_play_effect);  in psxpad_spi_init_ff()
166 		dev_err(&pad->spi->dev,  in psxpad_spi_init_ff()
196 	pm_runtime_get_sync(&pad->spi->dev);  in psxpad_spi_poll_open()
205 	pm_runtime_put_sync(&pad->spi->dev);  in psxpad_spi_poll_close()
216 	memcpy(pad->sendbuf, PSX_CMD_POLL, sizeof(PSX_CMD_POLL));  in psxpad_spi_poll()
217 	pad->sendbuf[3] = pad->motor1enable ? pad->motor1level : 0x00;  in psxpad_spi_poll()
218 	pad->sendbuf[4] = pad->motor2enable ? pad->motor2level : 0x00;  in psxpad_spi_poll()
221 		dev_err(&pad->spi->dev,  in psxpad_spi_poll()
226 	switch (pad->response[1]) {  in psxpad_spi_poll()
229 		b_rsp3 = ~pad->response[3];  in psxpad_spi_poll()
230 		b_rsp4 = ~pad->response[4];  in psxpad_spi_poll()
232 		input_report_abs(input, ABS_X, REVERSE_BIT(pad->response[7]));  in psxpad_spi_poll()
233 		input_report_abs(input, ABS_Y, REVERSE_BIT(pad->response[8]));  in psxpad_spi_poll()
234 		input_report_abs(input, ABS_RX, REVERSE_BIT(pad->response[5]));  in psxpad_spi_poll()
235 		input_report_abs(input, ABS_RY, REVERSE_BIT(pad->response[6]));  in psxpad_spi_poll()
256 		b_rsp3 = ~pad->response[3];  in psxpad_spi_poll()
257 		b_rsp4 = ~pad->response[4];  in psxpad_spi_poll()
291 	pad = devm_kzalloc(&spi->dev, sizeof(struct psxpad), GFP_KERNEL);  in psxpad_spi_probe()
293 		return -ENOMEM;  in psxpad_spi_probe()
295 	idev = devm_input_allocate_device(&spi->dev);  in psxpad_spi_probe()
297 		dev_err(&spi->dev, "failed to allocate input device\n");  in psxpad_spi_probe()
298 		return -ENOMEM;  in psxpad_spi_probe()
302 	pad->idev = idev;  in psxpad_spi_probe()
303 	pad->spi = spi;  in psxpad_spi_probe()
308 	idev->name = "PlayStation 1/2 joypad";  in psxpad_spi_probe()
309 	snprintf(pad->phys, sizeof(pad->phys), "%s/input", dev_name(&spi->dev));  in psxpad_spi_probe()
310 	idev->id.bustype = BUS_SPI;  in psxpad_spi_probe()
312 	idev->open = psxpad_spi_poll_open;  in psxpad_spi_probe()
313 	idev->close = psxpad_spi_poll_close;  in psxpad_spi_probe()
342 	spi->mode = SPI_MODE_3;  in psxpad_spi_probe()
343 	spi->bits_per_word = 8;  in psxpad_spi_probe()
345 	spi->controller->min_speed_hz = 125000;  in psxpad_spi_probe()
346 	spi->controller->max_speed_hz = 125000;  in psxpad_spi_probe()
355 		dev_err(&spi->dev, "failed to set up polling: %d\n", err);  in psxpad_spi_probe()
367 		dev_err(&spi->dev,  in psxpad_spi_probe()
372 	pm_runtime_enable(&spi->dev);  in psxpad_spi_probe()
390 	{ "psxpad-spi", 0 },
396 	.driver = {
397 		.name = "psxpad-spi",
407 MODULE_DESCRIPTION("PlayStation 1/2 joypads via SPI interface Driver");