2 // handle au0828 IR remotes via linux kernel input layer.
36 	int  (*get_key_i2c)(struct au0828_rc *ir);
40  * AU8522 has a builtin IR receiver. Add functions to get IR from it
43 static int au8522_rc_write(struct au0828_rc *ir, u16 reg, u8 data)  in au8522_rc_write()  argument
47 	struct i2c_msg msg = { .addr = ir->i2c_dev_addr, .flags = 0,  in au8522_rc_write()
50 	rc = i2c_transfer(ir->dev->i2c_client.adapter, &msg, 1);  in au8522_rc_write()
58 static int au8522_rc_read(struct au0828_rc *ir, u16 reg, int val,  in au8522_rc_read()  argument
63 	struct i2c_msg msg[2] = { { .addr = ir->i2c_dev_addr, .flags = 0,  in au8522_rc_read()
65 				  { .addr = ir->i2c_dev_addr, .flags = I2C_M_RD,  in au8522_rc_read()
75 	rc = i2c_transfer(ir->dev->i2c_client.adapter, msg, 2);  in au8522_rc_read()
83 static int au8522_rc_andor(struct au0828_rc *ir, u16 reg, u8 mask, u8 value)  in au8522_rc_andor()  argument
88 	rc = au8522_rc_read(ir, reg, -1, &buf, 1);  in au8522_rc_andor()
99 	return au8522_rc_write(ir, reg, buf);  in au8522_rc_andor()
102 #define au8522_rc_set(ir, reg, bit) au8522_rc_andor(ir, (reg), (bit), (bit))  argument
103 #define au8522_rc_clear(ir, reg, bit) au8522_rc_andor(ir, (reg), (bit), 0)  argument
113 static int au0828_get_key_au8522(struct au0828_rc *ir)  in au0828_get_key_au8522()  argument
122 	if (test_bit(DEV_DISCONNECTED, &ir->dev->dev_state))  in au0828_get_key_au8522()
125 	/* Check IR int */  in au0828_get_key_au8522()
126 	rc = au8522_rc_read(ir, 0xe1, -1, buf, 1);  in au0828_get_key_au8522()
128 		/* Be sure that IR is enabled */  in au0828_get_key_au8522()
129 		au8522_rc_set(ir, 0xe0, 1 << 4);  in au0828_get_key_au8522()
134 	rc = au8522_rc_read(ir, 0xe3, 0x11, buf, sizeof(buf));  in au0828_get_key_au8522()
140 	/* Disable IR */  in au0828_get_key_au8522()
141 	au8522_rc_clear(ir, 0xe0, 1 << 4);  in au0828_get_key_au8522()
143 	/* Enable IR */  in au0828_get_key_au8522()
144 	au8522_rc_set(ir, 0xe0, 1 << 4);  in au0828_get_key_au8522()
185 				ir_raw_event_store(ir->rc, &rawir);  in au0828_get_key_au8522()
193 			ir_raw_event_store(ir->rc, &rawir);  in au0828_get_key_au8522()
205 	ir_raw_event_store(ir->rc, &rawir);  in au0828_get_key_au8522()
207 	ir_raw_event_handle(ir->rc);  in au0828_get_key_au8522()
213  * Generic IR code
218 	struct au0828_rc *ir = container_of(work, struct au0828_rc, work.work);  in au0828_rc_work()  local
221 	rc = ir->get_key_i2c(ir);  in au0828_rc_work()
225 	schedule_delayed_work(&ir->work, msecs_to_jiffies(ir->polling));  in au0828_rc_work()
230 	struct au0828_rc *ir = rc->priv;  in au0828_rc_start()  local
232 	INIT_DELAYED_WORK(&ir->work, au0828_rc_work);  in au0828_rc_start()
234 	/* Enable IR */  in au0828_rc_start()
235 	au8522_rc_set(ir, 0xe0, 1 << 4);  in au0828_rc_start()
237 	schedule_delayed_work(&ir->work, msecs_to_jiffies(ir->polling));  in au0828_rc_start()
244 	struct au0828_rc *ir = rc->priv;  in au0828_rc_stop()  local
246 	cancel_delayed_work_sync(&ir->work);  in au0828_rc_stop()
249 	if (!test_bit(DEV_DISCONNECTED, &ir->dev->dev_state)) {  in au0828_rc_stop()
250 		/* Disable IR */  in au0828_rc_stop()
251 		au8522_rc_clear(ir, 0xe0, 1 << 4);  in au0828_rc_stop()
274 	struct au0828_rc *ir;  in au0828_rc_register()  local
286 	ir = kzalloc(sizeof(*ir), GFP_KERNEL);  in au0828_rc_register()
288 	if (!ir || !rc)  in au0828_rc_register()
292 	ir->dev = dev;  in au0828_rc_register()
293 	dev->ir = ir;  in au0828_rc_register()
294 	ir->rc = rc;  in au0828_rc_register()
296 	rc->priv = ir;  in au0828_rc_register()
304 			ir->get_key_i2c = au0828_get_key_au8522;  in au0828_rc_register()
311 		ir->i2c_dev_addr = i2c_rc_dev_addr;  in au0828_rc_register()
314 	/* This is how often we ask the chip for IR information */  in au0828_rc_register()
315 	ir->polling = 100; /* ms */  in au0828_rc_register()
318 	snprintf(ir->name, sizeof(ir->name), "au0828 IR (%s)",  in au0828_rc_register()
321 	usb_make_path(dev->usbdev, ir->phys, sizeof(ir->phys));  in au0828_rc_register()
322 	strlcat(ir->phys, "/input0", sizeof(ir->phys));  in au0828_rc_register()
324 	rc->device_name = ir->name;  in au0828_rc_register()
325 	rc->input_phys = ir->phys;  in au0828_rc_register()
340 	pr_info("Remote controller %s initialized\n", ir->name);  in au0828_rc_register()
345 	dev->ir = NULL;  in au0828_rc_register()
347 	kfree(ir);  in au0828_rc_register()
353 	struct au0828_rc *ir = dev->ir;  in au0828_rc_unregister()  local
356 	if (!ir)  in au0828_rc_unregister()
359 	rc_unregister_device(ir->rc);  in au0828_rc_unregister()
362 	kfree(ir);  in au0828_rc_unregister()
363 	dev->ir = NULL;  in au0828_rc_unregister()
368 	struct au0828_rc *ir = dev->ir;  in au0828_rc_suspend()  local
370 	if (!ir)  in au0828_rc_suspend()
375 	cancel_delayed_work_sync(&ir->work);  in au0828_rc_suspend()
377 	/* Disable IR */  in au0828_rc_suspend()
378 	au8522_rc_clear(ir, 0xe0, 1 << 4);  in au0828_rc_suspend()
385 	struct au0828_rc *ir = dev->ir;  in au0828_rc_resume()  local
387 	if (!ir)  in au0828_rc_resume()
392 	/* Enable IR */  in au0828_rc_resume()
393 	au8522_rc_set(ir, 0xe0, 1 << 4);  in au0828_rc_resume()
395 	schedule_delayed_work(&ir->work, msecs_to_jiffies(ir->polling));  in au0828_rc_resume()