1 // SPDX-License-Identifier: GPL-2.0-only
3 // Copyright (C) 2021-2022 Samuel Holland <samuel@sholland.org>
18 #define DRV_NAME			"pinephone-keyboard"
160 	struct i2c_client *client = adap->algo_data;  in ppkb_adap_smbus_xfer()
165 	buf[1] = data->byte;  in ppkb_adap_smbus_xfer()
183 		return -EIO;  in ppkb_adap_smbus_xfer()
190 		data->byte = ret;  in ppkb_adap_smbus_xfer()
209 	unsigned short *keymap = ppkb->input->keycode;  in ppkb_update()
211 	u8 *old_buf = ppkb->buf[!ppkb->buf_swap];  in ppkb_update()
212 	u8 *new_buf = ppkb->buf[ppkb->buf_swap];  in ppkb_update()
214 	struct device *dev = &client->dev;  in ppkb_update()
223 	crc = crc8(ppkb->crc_table, &new_buf[1], PPKB_COLS, CRC8_INIT_VALUE);  in ppkb_update()
229 	ppkb->buf_swap = !ppkb->buf_swap;  in ppkb_update()
252 			fn_state = value ? ppkb->fn_pressed : ppkb->fn_state[col] & mask;  in ppkb_update()
254 				ppkb->fn_state[col] ^= mask;  in ppkb_update()
259 			input_event(ppkb->input, EV_MSC, MSC_SCAN, code);  in ppkb_update()
260 			input_report_key(ppkb->input, keymap[code], value);  in ppkb_update()
262 				ppkb->fn_pressed = value;  in ppkb_update()
265 	input_sync(ppkb->input);  in ppkb_update()
279 	struct device *dev = &client->dev;  in ppkb_set_scan()
328 	struct device *dev = &client->dev;  in ppkb_probe()
357 		error = ret < 0 ? ret : -EIO;  in ppkb_probe()
366 		return -ENODEV;  in ppkb_probe()
377 		dev_err(dev, "Unexpected keyboard size %ux%u\n",  in ppkb_probe()
379 		return -EINVAL;  in ppkb_probe()
389 		return -ENOMEM;  in ppkb_probe()
393 	i2c_bus = of_get_child_by_name(dev->of_node, "i2c");  in ppkb_probe()
395 		ppkb->adapter.owner = THIS_MODULE;  in ppkb_probe()
396 		ppkb->adapter.algo = &ppkb_adap_algo;  in ppkb_probe()
397 		ppkb->adapter.algo_data = client;  in ppkb_probe()
398 		ppkb->adapter.dev.parent = dev;  in ppkb_probe()
399 		ppkb->adapter.dev.of_node = i2c_bus;  in ppkb_probe()
400 		strscpy(ppkb->adapter.name, DRV_NAME, sizeof(ppkb->adapter.name));  in ppkb_probe()
402 		error = devm_i2c_add_adapter(dev, &ppkb->adapter);  in ppkb_probe()
409 	crc8_populate_msb(ppkb->crc_table, PPKB_CRC8_POLYNOMIAL);  in ppkb_probe()
411 	ppkb->input = devm_input_allocate_device(dev);  in ppkb_probe()
412 	if (!ppkb->input)  in ppkb_probe()
413 		return -ENOMEM;  in ppkb_probe()
415 	input_set_drvdata(ppkb->input, client);  in ppkb_probe()
417 	ppkb->input->name = "PinePhone Keyboard";  in ppkb_probe()
418 	ppkb->input->phys = DRV_NAME "/input0";  in ppkb_probe()
419 	ppkb->input->id.bustype = BUS_I2C;  in ppkb_probe()
420 	ppkb->input->open = ppkb_open;  in ppkb_probe()
421 	ppkb->input->close = ppkb_close;  in ppkb_probe()
423 	input_set_capability(ppkb->input, EV_MSC, MSC_SCAN);  in ppkb_probe()
424 	__set_bit(EV_REP, ppkb->input->evbit);  in ppkb_probe()
428 					   ppkb->input);  in ppkb_probe()
434 	error = input_register_device(ppkb->input);  in ppkb_probe()
440 	error = devm_request_threaded_irq(dev, client->irq,  in ppkb_probe()
442 					  IRQF_ONESHOT, client->name, client);  in ppkb_probe()
452 	{ .compatible = "pine64,pinephone-keyboard" },
467 MODULE_DESCRIPTION("Pine64 PinePhone keyboard driver");