1 // SPDX-License-Identifier: GPL-2.0-or-later
3  * wm8994-core.c  --  Device access for Wolfson WM8994
32 		.name = "wm8994-ldo",
37 		.name = "wm8994-ldo",
61 		.name = "wm8994-codec",
67 		.name = "wm8994-gpio",
76  * and should be handled via the standard regulator API supply
88 	"SPKVDD2",
98 	"SPKVDD2",
110 	"SPKVDD2",
121 	switch (wm8994->type) {  in wm8994_suspend()
138 	if (!wm8994->ldo_ena_always_driven)  in wm8994_suspend()
149 	regcache_mark_dirty(wm8994->regmap);  in wm8994_suspend()
154 	ret = regcache_sync_region(wm8994->regmap, WM8994_GPIO_1,  in wm8994_suspend()
160 	ret = regcache_sync_region(wm8994->regmap,  in wm8994_suspend()
166 	regcache_cache_only(wm8994->regmap, true);  in wm8994_suspend()
167 	wm8994->suspended = true;  in wm8994_suspend()
169 	ret = regulator_bulk_disable(wm8994->num_supplies,  in wm8994_suspend()
170 				     wm8994->supplies);  in wm8994_suspend()
185 	if (!wm8994->suspended)  in wm8994_resume()
188 	ret = regulator_bulk_enable(wm8994->num_supplies,  in wm8994_resume()
189 				    wm8994->supplies);  in wm8994_resume()
195 	regcache_cache_only(wm8994->regmap, false);  in wm8994_resume()
196 	ret = regcache_sync(wm8994->regmap);  in wm8994_resume()
207 	wm8994->suspended = false;  in wm8994_resume()
212 	regulator_bulk_disable(wm8994->num_supplies, wm8994->supplies);  in wm8994_resume()
226 	ldo_pdata = &pdata->ldo[ldo];  in wm8994_ldo_in_use()
228 	if (!ldo_pdata->init_data)  in wm8994_ldo_in_use()
231 	return ldo_pdata->init_data->num_consumer_supplies != 0;  in wm8994_ldo_in_use()
265 	struct device_node *np = wm8994->dev->of_node;  in wm8994_set_pdata_from_of()
266 	struct wm8994_pdata *pdata = &wm8994->pdata;  in wm8994_set_pdata_from_of()
272 	if (of_property_read_u32_array(np, "wlf,gpio-cfg", pdata->gpio_defaults,  in wm8994_set_pdata_from_of()
273 				       ARRAY_SIZE(pdata->gpio_defaults)) >= 0) {  in wm8994_set_pdata_from_of()
274 		for (i = 0; i < ARRAY_SIZE(pdata->gpio_defaults); i++) {  in wm8994_set_pdata_from_of()
275 			if (wm8994->pdata.gpio_defaults[i] == 0)  in wm8994_set_pdata_from_of()
276 				pdata->gpio_defaults[i]  in wm8994_set_pdata_from_of()
281 	of_property_read_u32_array(np, "wlf,micbias-cfg", pdata->micbias,  in wm8994_set_pdata_from_of()
282 				   ARRAY_SIZE(pdata->micbias));  in wm8994_set_pdata_from_of()
284 	pdata->lineout1_diff = true;  in wm8994_set_pdata_from_of()
285 	pdata->lineout2_diff = true;  in wm8994_set_pdata_from_of()
286 	if (of_find_property(np, "wlf,lineout1-se", NULL))  in wm8994_set_pdata_from_of()
287 		pdata->lineout1_diff = false;  in wm8994_set_pdata_from_of()
288 	if (of_find_property(np, "wlf,lineout2-se", NULL))  in wm8994_set_pdata_from_of()
289 		pdata->lineout2_diff = false;  in wm8994_set_pdata_from_of()
291 	if (of_find_property(np, "wlf,lineout1-feedback", NULL))  in wm8994_set_pdata_from_of()
292 		pdata->lineout1fb = true;  in wm8994_set_pdata_from_of()
293 	if (of_find_property(np, "wlf,lineout2-feedback", NULL))  in wm8994_set_pdata_from_of()
294 		pdata->lineout2fb = true;  in wm8994_set_pdata_from_of()
296 	if (of_find_property(np, "wlf,ldoena-always-driven", NULL))  in wm8994_set_pdata_from_of()
297 		pdata->lineout2fb = true;  in wm8994_set_pdata_from_of()
299 	pdata->spkmode_pu = of_property_read_bool(np, "wlf,spkmode-pu");  in wm8994_set_pdata_from_of()
301 	pdata->csnaddr_pd = of_property_read_bool(np, "wlf,csnaddr-pd");  in wm8994_set_pdata_from_of()
313  * Instantiate the generic non-control parts of the device.
324 	if (dev_get_platdata(wm8994->dev)) {  in wm8994_device_init()
325 		pdata = dev_get_platdata(wm8994->dev);  in wm8994_device_init()
326 		wm8994->pdata = *pdata;  in wm8994_device_init()
328 	pdata = &wm8994->pdata;  in wm8994_device_init()
334 	dev_set_drvdata(wm8994->dev, wm8994);  in wm8994_device_init()
336 	/* Add the on-chip regulators first for bootstrapping */  in wm8994_device_init()
337 	ret = mfd_add_devices(wm8994->dev, 0,  in wm8994_device_init()
342 		dev_err(wm8994->dev, "Failed to add children: %d\n", ret);  in wm8994_device_init()
346 	switch (wm8994->type) {  in wm8994_device_init()
348 		wm8994->num_supplies = ARRAY_SIZE(wm1811_main_supplies);  in wm8994_device_init()
351 		wm8994->num_supplies = ARRAY_SIZE(wm8994_main_supplies);  in wm8994_device_init()
354 		wm8994->num_supplies = ARRAY_SIZE(wm8958_main_supplies);  in wm8994_device_init()
361 	wm8994->supplies = devm_kcalloc(wm8994->dev,  in wm8994_device_init()
362 					wm8994->num_supplies,  in wm8994_device_init()
365 	if (!wm8994->supplies) {  in wm8994_device_init()
366 		ret = -ENOMEM;  in wm8994_device_init()
370 	switch (wm8994->type) {  in wm8994_device_init()
373 			wm8994->supplies[i].supply = wm1811_main_supplies[i];  in wm8994_device_init()
377 			wm8994->supplies[i].supply = wm8994_main_supplies[i];  in wm8994_device_init()
381 			wm8994->supplies[i].supply = wm8958_main_supplies[i];  in wm8994_device_init()
390 	 * wm8994->dev's children (regulators) and those regulators are  in wm8994_device_init()
393 	ret = regulator_bulk_get(wm8994->dev, wm8994->num_supplies,  in wm8994_device_init()
394 				 wm8994->supplies);  in wm8994_device_init()
396 		if (ret != -EPROBE_DEFER)  in wm8994_device_init()
397 			dev_err(wm8994->dev, "Failed to get supplies: %d\n",  in wm8994_device_init()
402 	ret = regulator_bulk_enable(wm8994->num_supplies, wm8994->supplies);  in wm8994_device_init()
404 		dev_err(wm8994->dev, "Failed to enable supplies: %d\n", ret);  in wm8994_device_init()
410 		dev_err(wm8994->dev, "Failed to read ID register\n");  in wm8994_device_init()
416 		if (wm8994->type != WM1811)  in wm8994_device_init()
417 			dev_warn(wm8994->dev, "Device registered as type %d\n",  in wm8994_device_init()
418 				 wm8994->type);  in wm8994_device_init()
419 		wm8994->type = WM1811;  in wm8994_device_init()
423 		if (wm8994->type != WM8994)  in wm8994_device_init()
424 			dev_warn(wm8994->dev, "Device registered as type %d\n",  in wm8994_device_init()
425 				 wm8994->type);  in wm8994_device_init()
426 		wm8994->type = WM8994;  in wm8994_device_init()
430 		if (wm8994->type != WM8958)  in wm8994_device_init()
431 			dev_warn(wm8994->dev, "Device registered as type %d\n",  in wm8994_device_init()
432 				 wm8994->type);  in wm8994_device_init()
433 		wm8994->type = WM8958;  in wm8994_device_init()
436 		dev_err(wm8994->dev, "Device is not a WM8994, ID is %x\n",  in wm8994_device_init()
438 		ret = -EINVAL;  in wm8994_device_init()
444 		dev_err(wm8994->dev, "Failed to read revision register: %d\n",  in wm8994_device_init()
448 	wm8994->revision = ret & WM8994_CHIP_REV_MASK;  in wm8994_device_init()
449 	wm8994->cust_id = (ret & WM8994_CUST_ID_MASK) >> WM8994_CUST_ID_SHIFT;  in wm8994_device_init()
451 	switch (wm8994->type) {  in wm8994_device_init()
453 		switch (wm8994->revision) {  in wm8994_device_init()
456 			dev_warn(wm8994->dev,  in wm8994_device_init()
458 				 'A' + wm8994->revision);  in wm8994_device_init()
470 		switch (wm8994->revision) {  in wm8994_device_init()
482 		if (wm8994->revision > 1)  in wm8994_device_init()
483 			wm8994->revision++;  in wm8994_device_init()
493 	dev_info(wm8994->dev, "%s revision %c CUST_ID %02x\n", devname,  in wm8994_device_init()
494 		 'A' + wm8994->revision, wm8994->cust_id);  in wm8994_device_init()
496 	switch (wm8994->type) {  in wm8994_device_init()
507 		dev_err(wm8994->dev, "Unknown device type %d\n", wm8994->type);  in wm8994_device_init()
508 		ret = -EINVAL;  in wm8994_device_init()
512 	ret = regmap_reinit_cache(wm8994->regmap, regmap_config);  in wm8994_device_init()
514 		dev_err(wm8994->dev, "Failed to reinit register cache: %d\n",  in wm8994_device_init()
526 		dev_err(wm8994->dev, "Failed to reset device: %d\n", ret);  in wm8994_device_init()
531 		ret = regmap_register_patch(wm8994->regmap, regmap_patch,  in wm8994_device_init()
534 			dev_err(wm8994->dev, "Failed to register patch: %d\n",  in wm8994_device_init()
540 	wm8994->irq_base = pdata->irq_base;  in wm8994_device_init()
541 	wm8994->gpio_base = pdata->gpio_base;  in wm8994_device_init()
543 	/* GPIO configuration is only applied if it's non-zero */  in wm8994_device_init()
544 	for (i = 0; i < ARRAY_SIZE(pdata->gpio_defaults); i++) {  in wm8994_device_init()
545 		if (pdata->gpio_defaults[i]) {  in wm8994_device_init()
547 					0xffff, pdata->gpio_defaults[i]);  in wm8994_device_init()
551 	wm8994->ldo_ena_always_driven = pdata->ldo_ena_always_driven;  in wm8994_device_init()
553 	if (pdata->spkmode_pu)  in wm8994_device_init()
555 	if (pdata->csnaddr_pd)  in wm8994_device_init()
581 	ret = mfd_add_devices(wm8994->dev, -1,  in wm8994_device_init()
585 		dev_err(wm8994->dev, "Failed to add children: %d\n", ret);  in wm8994_device_init()
589 	pm_runtime_set_active(wm8994->dev);  in wm8994_device_init()
590 	pm_runtime_enable(wm8994->dev);  in wm8994_device_init()
591 	pm_runtime_idle(wm8994->dev);  in wm8994_device_init()
598 	regulator_bulk_disable(wm8994->num_supplies,  in wm8994_device_init()
599 			       wm8994->supplies);  in wm8994_device_init()
601 	regulator_bulk_free(wm8994->num_supplies, wm8994->supplies);  in wm8994_device_init()
603 	mfd_remove_devices(wm8994->dev);  in wm8994_device_init()
609 	pm_runtime_get_sync(wm8994->dev);  in wm8994_device_exit()
610 	pm_runtime_disable(wm8994->dev);  in wm8994_device_exit()
611 	pm_runtime_put_noidle(wm8994->dev);  in wm8994_device_exit()
613 	regulator_bulk_disable(wm8994->num_supplies, wm8994->supplies);  in wm8994_device_exit()
614 	regulator_bulk_free(wm8994->num_supplies, wm8994->supplies);  in wm8994_device_exit()
615 	mfd_remove_devices(wm8994->dev);  in wm8994_device_exit()
633 	wm8994 = devm_kzalloc(&i2c->dev, sizeof(struct wm8994), GFP_KERNEL);  in wm8994_i2c_probe()
635 		return -ENOMEM;  in wm8994_i2c_probe()
638 	wm8994->dev = &i2c->dev;  in wm8994_i2c_probe()
639 	wm8994->irq = i2c->irq;  in wm8994_i2c_probe()
641 	if (i2c->dev.of_node) {  in wm8994_i2c_probe()
642 		of_id = of_match_device(wm8994_of_match, &i2c->dev);  in wm8994_i2c_probe()
644 			wm8994->type = (enum wm8994_type)of_id->data;  in wm8994_i2c_probe()
646 		wm8994->type = id->driver_data;  in wm8994_i2c_probe()
649 	wm8994->regmap = devm_regmap_init_i2c(i2c, &wm8994_base_regmap_config);  in wm8994_i2c_probe()
650 	if (IS_ERR(wm8994->regmap)) {  in wm8994_i2c_probe()
651 		ret = PTR_ERR(wm8994->regmap);  in wm8994_i2c_probe()
652 		dev_err(wm8994->dev, "Failed to allocate register map: %d\n",  in wm8994_i2c_probe()
657 	return wm8994_device_init(wm8994, i2c->irq);  in wm8994_i2c_probe()