1 // SPDX-License-Identifier: GPL-2.0-only
15 #include <linux/mfd/mt6397/core.h>
16 #include <linux/mfd/mt6397/registers.h>
56 	u32 rst_lprst_mask; /* Long-press reset timeout bitmask */
121 	struct mtk_pmic_keys *keys;  member
133 	struct mtk_pmic_keys_info keys[MTK_PMIC_MAX_KEY_COUNT];  member
142 static void mtk_pmic_keys_lp_reset_setup(struct mtk_pmic_keys *keys,  in mtk_pmic_keys_lp_reset_setup()  argument
150 	kregs_home = keys->keys[MTK_PMIC_HOMEKEY_INDEX].regs;  in mtk_pmic_keys_lp_reset_setup()
151 	kregs_pwr = keys->keys[MTK_PMIC_PWRKEY_INDEX].regs;  in mtk_pmic_keys_lp_reset_setup()
153 	error = of_property_read_u32(keys->dev->of_node, "power-off-time-sec",  in mtk_pmic_keys_lp_reset_setup()
158 	mask = regs->rst_lprst_mask;  in mtk_pmic_keys_lp_reset_setup()
159 	value = long_press_debounce << (ffs(regs->rst_lprst_mask) - 1);  in mtk_pmic_keys_lp_reset_setup()
161 	error  = of_property_read_u32(keys->dev->of_node,  in mtk_pmic_keys_lp_reset_setup()
162 				      "mediatek,long-press-mode",  in mtk_pmic_keys_lp_reset_setup()
169 		value |= kregs_home->rst_en_mask;  in mtk_pmic_keys_lp_reset_setup()
173 		value |= kregs_pwr->rst_en_mask;  in mtk_pmic_keys_lp_reset_setup()
177 		mask |= kregs_home->rst_en_mask;  in mtk_pmic_keys_lp_reset_setup()
178 		mask |= kregs_pwr->rst_en_mask;  in mtk_pmic_keys_lp_reset_setup()
185 	regmap_update_bits(keys->regmap, regs->pmic_rst_reg, mask, value);  in mtk_pmic_keys_lp_reset_setup()
193 	regmap_read(info->keys->regmap, info->regs->deb_reg, &key_deb);  in mtk_pmic_keys_irq_handler_thread()
195 	key_deb &= info->regs->deb_mask;  in mtk_pmic_keys_irq_handler_thread()
199 	input_report_key(info->keys->input_dev, info->keycode, pressed);  in mtk_pmic_keys_irq_handler_thread()
200 	input_sync(info->keys->input_dev);  in mtk_pmic_keys_irq_handler_thread()
202 	dev_dbg(info->keys->dev, "(%s) key =%d using PMIC\n",  in mtk_pmic_keys_irq_handler_thread()
203 		 pressed ? "pressed" : "released", info->keycode);  in mtk_pmic_keys_irq_handler_thread()
208 static int mtk_pmic_key_setup(struct mtk_pmic_keys *keys,  in mtk_pmic_key_setup()  argument
213 	info->keys = keys;  in mtk_pmic_key_setup()
215 	ret = regmap_update_bits(keys->regmap, info->regs->intsel_reg,  in mtk_pmic_key_setup()
216 				 info->regs->intsel_mask,  in mtk_pmic_key_setup()
217 				 info->regs->intsel_mask);  in mtk_pmic_key_setup()
221 	ret = devm_request_threaded_irq(keys->dev, info->irq, NULL,  in mtk_pmic_key_setup()
224 					"mtk-pmic-keys", info);  in mtk_pmic_key_setup()
226 		dev_err(keys->dev, "Failed to request IRQ: %d: %d\n",  in mtk_pmic_key_setup()
227 			info->irq, ret);  in mtk_pmic_key_setup()
231 	if (info->irq_r > 0) {  in mtk_pmic_key_setup()
232 		ret = devm_request_threaded_irq(keys->dev, info->irq_r, NULL,  in mtk_pmic_key_setup()
235 						"mtk-pmic-keys", info);  in mtk_pmic_key_setup()
237 			dev_err(keys->dev, "Failed to request IRQ_r: %d: %d\n",  in mtk_pmic_key_setup()
238 				info->irq, ret);  in mtk_pmic_key_setup()
243 	input_set_capability(keys->input_dev, EV_KEY, info->keycode);  in mtk_pmic_key_setup()
250 	struct mtk_pmic_keys *keys = dev_get_drvdata(dev);  in mtk_pmic_keys_suspend()  local
254 		if (keys->keys[index].wakeup) {  in mtk_pmic_keys_suspend()
255 			enable_irq_wake(keys->keys[index].irq);  in mtk_pmic_keys_suspend()
256 			if (keys->keys[index].irq_r > 0)  in mtk_pmic_keys_suspend()
257 				enable_irq_wake(keys->keys[index].irq_r);  in mtk_pmic_keys_suspend()
266 	struct mtk_pmic_keys *keys = dev_get_drvdata(dev);  in mtk_pmic_keys_resume()  local
270 		if (keys->keys[index].wakeup) {  in mtk_pmic_keys_resume()
271 			disable_irq_wake(keys->keys[index].irq);  in mtk_pmic_keys_resume()
272 			if (keys->keys[index].irq_r > 0)  in mtk_pmic_keys_resume()
273 				disable_irq_wake(keys->keys[index].irq_r);  in mtk_pmic_keys_resume()
285 		.compatible = "mediatek,mt6397-keys",
288 		.compatible = "mediatek,mt6323-keys",
291 		.compatible = "mediatek,mt6331-keys",
294 		.compatible = "mediatek,mt6357-keys",
297 		.compatible = "mediatek,mt6358-keys",
309 	struct mt6397_chip *pmic_chip = dev_get_drvdata(pdev->dev.parent);  in mtk_pmic_keys_probe()
310 	struct device_node *node = pdev->dev.of_node;  in mtk_pmic_keys_probe()
313 	struct mtk_pmic_keys *keys;  in mtk_pmic_keys_probe()  local
317 		of_match_device(of_mtk_pmic_keys_match_tbl, &pdev->dev);  in mtk_pmic_keys_probe()
319 	keys = devm_kzalloc(&pdev->dev, sizeof(*keys), GFP_KERNEL);  in mtk_pmic_keys_probe()
320 	if (!keys)  in mtk_pmic_keys_probe()
321 		return -ENOMEM;  in mtk_pmic_keys_probe()
323 	keys->dev = &pdev->dev;  in mtk_pmic_keys_probe()
324 	keys->regmap = pmic_chip->regmap;  in mtk_pmic_keys_probe()
325 	mtk_pmic_regs = of_id->data;  in mtk_pmic_keys_probe()
327 	keys->input_dev = input_dev = devm_input_allocate_device(keys->dev);  in mtk_pmic_keys_probe()
329 		dev_err(keys->dev, "input allocate device fail.\n");  in mtk_pmic_keys_probe()
330 		return -ENOMEM;  in mtk_pmic_keys_probe()
333 	input_dev->name = "mtk-pmic-keys";  in mtk_pmic_keys_probe()
334 	input_dev->id.bustype = BUS_HOST;  in mtk_pmic_keys_probe()
335 	input_dev->id.vendor = 0x0001;  in mtk_pmic_keys_probe()
336 	input_dev->id.product = 0x0001;  in mtk_pmic_keys_probe()
337 	input_dev->id.version = 0x0001;  in mtk_pmic_keys_probe()
342 		dev_err(keys->dev, "too many keys defined (%d)\n", keycount);  in mtk_pmic_keys_probe()
343 		return -EINVAL;  in mtk_pmic_keys_probe()
347 		keys->keys[index].regs = &mtk_pmic_regs->keys_regs[index];  in mtk_pmic_keys_probe()
349 		keys->keys[index].irq =  in mtk_pmic_keys_probe()
351 		if (keys->keys[index].irq < 0)  in mtk_pmic_keys_probe()
352 			return keys->keys[index].irq;  in mtk_pmic_keys_probe()
354 		if (of_device_is_compatible(node, "mediatek,mt6358-keys")) {  in mtk_pmic_keys_probe()
355 			keys->keys[index].irq_r = platform_get_irq_byname(pdev,  in mtk_pmic_keys_probe()
358 			if (keys->keys[index].irq_r < 0)  in mtk_pmic_keys_probe()
359 				return keys->keys[index].irq_r;  in mtk_pmic_keys_probe()
363 			"linux,keycodes", &keys->keys[index].keycode);  in mtk_pmic_keys_probe()
365 			dev_err(keys->dev,  in mtk_pmic_keys_probe()
371 		if (of_property_read_bool(child, "wakeup-source"))  in mtk_pmic_keys_probe()
372 			keys->keys[index].wakeup = true;  in mtk_pmic_keys_probe()
374 		error = mtk_pmic_key_setup(keys, &keys->keys[index]);  in mtk_pmic_keys_probe()
383 		dev_err(&pdev->dev,  in mtk_pmic_keys_probe()
388 	mtk_pmic_keys_lp_reset_setup(keys, mtk_pmic_regs);  in mtk_pmic_keys_probe()
390 	platform_set_drvdata(pdev, keys);  in mtk_pmic_keys_probe()
398 		   .name = "mtk-pmic-keys",
408 MODULE_DESCRIPTION("MTK pmic-keys driver v0.1");