3  * Touchkey driver for Freescale MPR121 Controllor
54 /* MPR121 has 12 keys */
87 	struct mpr121_touchkey *mpr121 = input_get_drvdata(dev);  in mpr_touchkey_report()  local
88 	struct input_dev *input = mpr121->input_dev;  in mpr_touchkey_report()
89 	struct i2c_client *client = mpr121->client;  in mpr_touchkey_report()
109 	bit_changed = reg ^ mpr121->statusbits;  in mpr_touchkey_report()
110 	mpr121->statusbits = reg;  in mpr_touchkey_report()
111 	for_each_set_bit(key_num, &bit_changed, mpr121->keycount) {  in mpr_touchkey_report()
115 		key_val = mpr121->keycodes[key_num];  in mpr_touchkey_report()
129 	struct mpr121_touchkey *mpr121 = dev_id;  in mpr_touchkey_interrupt()  local
131 	mpr_touchkey_report(mpr121->input_dev);  in mpr_touchkey_interrupt()
136 static int mpr121_phys_init(struct mpr121_touchkey *mpr121,  in mpr121_phys_init()  argument
166 	 * The internal MPR121-auto-configuration can do this if it's  in mpr121_phys_init()
182 	eleconf = mpr121->keycount | ELECTRODE_CONF_QUICK_CHARGE;  in mpr121_phys_init()
188 	dev_dbg(&client->dev, "set up with %x keys.\n", mpr121->keycount);  in mpr121_phys_init()
201 	struct mpr121_touchkey *mpr121;  in mpr_touchkey_probe()  local
211 	mpr121 = devm_kzalloc(dev, sizeof(*mpr121), GFP_KERNEL);  in mpr_touchkey_probe()
212 	if (!mpr121)  in mpr_touchkey_probe()
219 	mpr121->client = client;  in mpr_touchkey_probe()
220 	mpr121->input_dev = input_dev;  in mpr_touchkey_probe()
221 	mpr121->keycount = device_property_count_u32(dev, "linux,keycodes");  in mpr_touchkey_probe()
222 	if (mpr121->keycount > MPR121_MAX_KEY_COUNT) {  in mpr_touchkey_probe()
223 		dev_err(dev, "too many keys defined (%d)\n", mpr121->keycount);  in mpr_touchkey_probe()
228 					       mpr121->keycodes,  in mpr_touchkey_probe()
229 					       mpr121->keycount);  in mpr_touchkey_probe()
236 	input_dev->name = "Freescale MPR121 Touchkey";  in mpr_touchkey_probe()
242 	input_set_drvdata(input_dev, mpr121);  in mpr_touchkey_probe()
244 	input_dev->keycode = mpr121->keycodes;  in mpr_touchkey_probe()
245 	input_dev->keycodesize = sizeof(mpr121->keycodes[0]);  in mpr_touchkey_probe()
246 	input_dev->keycodemax = mpr121->keycount;  in mpr_touchkey_probe()
248 	for (i = 0; i < mpr121->keycount; i++)  in mpr_touchkey_probe()
249 		input_set_capability(input_dev, EV_KEY, mpr121->keycodes[i]);  in mpr_touchkey_probe()
251 	error = mpr121_phys_init(mpr121, client, vdd_uv);  in mpr_touchkey_probe()
264 						  dev->driver->name, mpr121);  in mpr_touchkey_probe()
297 	i2c_set_clientdata(client, mpr121);  in mpr_touchkey_probe()
319 	struct mpr121_touchkey *mpr121 = i2c_get_clientdata(client);  in mpr_resume()  local
325 				  mpr121->keycount);  in mpr_resume()
340 	{ .compatible = "fsl,mpr121-touchkey" },
348 		.name	= "mpr121",
360 MODULE_DESCRIPTION("Touch Key driver for Freescale MPR121 Chip");