1 // SPDX-License-Identifier: GPL-2.0-or-later
3  * wm8994-core.c  --  Device access for Wolfson WM8994
31 		.name = "wm8994-ldo",
36 		.name = "wm8994-ldo",
60 		.name = "wm8994-codec",
66 		.name = "wm8994-gpio",
119 	switch (wm8994->type) {  in wm8994_suspend()
136 	if (!wm8994->ldo_ena_always_driven)  in wm8994_suspend()
147 	regcache_mark_dirty(wm8994->regmap);  in wm8994_suspend()
152 	ret = regcache_sync_region(wm8994->regmap, WM8994_GPIO_1,  in wm8994_suspend()
158 	ret = regcache_sync_region(wm8994->regmap,  in wm8994_suspend()
164 	regcache_cache_only(wm8994->regmap, true);  in wm8994_suspend()
165 	wm8994->suspended = true;  in wm8994_suspend()
167 	ret = regulator_bulk_disable(wm8994->num_supplies,  in wm8994_suspend()
168 				     wm8994->supplies);  in wm8994_suspend()
183 	if (!wm8994->suspended)  in wm8994_resume()
186 	ret = regulator_bulk_enable(wm8994->num_supplies,  in wm8994_resume()
187 				    wm8994->supplies);  in wm8994_resume()
193 	regcache_cache_only(wm8994->regmap, false);  in wm8994_resume()
194 	ret = regcache_sync(wm8994->regmap);  in wm8994_resume()
205 	wm8994->suspended = false;  in wm8994_resume()
210 	regulator_bulk_disable(wm8994->num_supplies, wm8994->supplies);  in wm8994_resume()
223 	ldo_pdata = &pdata->ldo[ldo];  in wm8994_ldo_in_use()
225 	if (!ldo_pdata->init_data)  in wm8994_ldo_in_use()
228 	return ldo_pdata->init_data->num_consumer_supplies != 0;  in wm8994_ldo_in_use()
262 	struct device_node *np = wm8994->dev->of_node;  in wm8994_set_pdata_from_of()
263 	struct wm8994_pdata *pdata = &wm8994->pdata;  in wm8994_set_pdata_from_of()
269 	if (of_property_read_u32_array(np, "wlf,gpio-cfg", pdata->gpio_defaults,  in wm8994_set_pdata_from_of()
270 				       ARRAY_SIZE(pdata->gpio_defaults)) >= 0) {  in wm8994_set_pdata_from_of()
271 		for (i = 0; i < ARRAY_SIZE(pdata->gpio_defaults); i++) {  in wm8994_set_pdata_from_of()
272 			if (wm8994->pdata.gpio_defaults[i] == 0)  in wm8994_set_pdata_from_of()
273 				pdata->gpio_defaults[i]  in wm8994_set_pdata_from_of()
278 	of_property_read_u32_array(np, "wlf,micbias-cfg", pdata->micbias,  in wm8994_set_pdata_from_of()
279 				   ARRAY_SIZE(pdata->micbias));  in wm8994_set_pdata_from_of()
281 	pdata->lineout1_diff = !of_property_read_bool(np, "wlf,lineout1-se");  in wm8994_set_pdata_from_of()
282 	pdata->lineout2_diff = !of_property_read_bool(np, "wlf,lineout2-se");  in wm8994_set_pdata_from_of()
283 	pdata->lineout1fb = of_property_read_bool(np, "wlf,lineout1-feedback");  in wm8994_set_pdata_from_of()
284 	pdata->lineout2fb = of_property_read_bool(np, "wlf,lineout2-feedback") ||  in wm8994_set_pdata_from_of()
285 		of_property_read_bool(np, "wlf,ldoena-always-driven");  in wm8994_set_pdata_from_of()
287 	pdata->spkmode_pu = of_property_read_bool(np, "wlf,spkmode-pu");  in wm8994_set_pdata_from_of()
289 	pdata->csnaddr_pd = of_property_read_bool(np, "wlf,csnaddr-pd");  in wm8994_set_pdata_from_of()
301  * Instantiate the generic non-control parts of the device.
312 	if (dev_get_platdata(wm8994->dev)) {  in wm8994_device_init()
313 		pdata = dev_get_platdata(wm8994->dev);  in wm8994_device_init()
314 		wm8994->pdata = *pdata;  in wm8994_device_init()
316 	pdata = &wm8994->pdata;  in wm8994_device_init()
322 	/* Add the on-chip regulators first for bootstrapping */  in wm8994_device_init()
323 	ret = mfd_add_devices(wm8994->dev, 0,  in wm8994_device_init()
328 		dev_err(wm8994->dev, "Failed to add children: %d\n", ret);  in wm8994_device_init()
332 	switch (wm8994->type) {  in wm8994_device_init()
334 		wm8994->num_supplies = ARRAY_SIZE(wm1811_main_supplies);  in wm8994_device_init()
337 		wm8994->num_supplies = ARRAY_SIZE(wm8994_main_supplies);  in wm8994_device_init()
340 		wm8994->num_supplies = ARRAY_SIZE(wm8958_main_supplies);  in wm8994_device_init()
347 	wm8994->supplies = devm_kcalloc(wm8994->dev,  in wm8994_device_init()
348 					wm8994->num_supplies,  in wm8994_device_init()
351 	if (!wm8994->supplies) {  in wm8994_device_init()
352 		ret = -ENOMEM;  in wm8994_device_init()
356 	switch (wm8994->type) {  in wm8994_device_init()
359 			wm8994->supplies[i].supply = wm1811_main_supplies[i];  in wm8994_device_init()
363 			wm8994->supplies[i].supply = wm8994_main_supplies[i];  in wm8994_device_init()
367 			wm8994->supplies[i].supply = wm8958_main_supplies[i];  in wm8994_device_init()
376 	 * wm8994->dev's children (regulators) and those regulators are  in wm8994_device_init()
379 	ret = regulator_bulk_get(wm8994->dev, wm8994->num_supplies,  in wm8994_device_init()
380 				 wm8994->supplies);  in wm8994_device_init()
382 		if (ret != -EPROBE_DEFER)  in wm8994_device_init()
383 			dev_err(wm8994->dev, "Failed to get supplies: %d\n",  in wm8994_device_init()
388 	ret = regulator_bulk_enable(wm8994->num_supplies, wm8994->supplies);  in wm8994_device_init()
390 		dev_err(wm8994->dev, "Failed to enable supplies: %d\n", ret);  in wm8994_device_init()
396 		dev_err(wm8994->dev, "Failed to read ID register\n");  in wm8994_device_init()
402 		if (wm8994->type != WM1811)  in wm8994_device_init()
403 			dev_warn(wm8994->dev, "Device registered as type %d\n",  in wm8994_device_init()
404 				 wm8994->type);  in wm8994_device_init()
405 		wm8994->type = WM1811;  in wm8994_device_init()
409 		if (wm8994->type != WM8994)  in wm8994_device_init()
410 			dev_warn(wm8994->dev, "Device registered as type %d\n",  in wm8994_device_init()
411 				 wm8994->type);  in wm8994_device_init()
412 		wm8994->type = WM8994;  in wm8994_device_init()
416 		if (wm8994->type != WM8958)  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 = WM8958;  in wm8994_device_init()
422 		dev_err(wm8994->dev, "Device is not a WM8994, ID is %x\n",  in wm8994_device_init()
424 		ret = -EINVAL;  in wm8994_device_init()
430 		dev_err(wm8994->dev, "Failed to read revision register: %d\n",  in wm8994_device_init()
434 	wm8994->revision = ret & WM8994_CHIP_REV_MASK;  in wm8994_device_init()
435 	wm8994->cust_id = (ret & WM8994_CUST_ID_MASK) >> WM8994_CUST_ID_SHIFT;  in wm8994_device_init()
437 	switch (wm8994->type) {  in wm8994_device_init()
439 		switch (wm8994->revision) {  in wm8994_device_init()
442 			dev_warn(wm8994->dev,  in wm8994_device_init()
444 				 'A' + wm8994->revision);  in wm8994_device_init()
456 		switch (wm8994->revision) {  in wm8994_device_init()
468 		if (wm8994->revision > 1)  in wm8994_device_init()
469 			wm8994->revision++;  in wm8994_device_init()
479 	dev_info(wm8994->dev, "%s revision %c CUST_ID %02x\n", devname,  in wm8994_device_init()
480 		 'A' + wm8994->revision, wm8994->cust_id);  in wm8994_device_init()
482 	switch (wm8994->type) {  in wm8994_device_init()
493 		dev_err(wm8994->dev, "Unknown device type %d\n", wm8994->type);  in wm8994_device_init()
494 		ret = -EINVAL;  in wm8994_device_init()
498 	ret = regmap_reinit_cache(wm8994->regmap, regmap_config);  in wm8994_device_init()
500 		dev_err(wm8994->dev, "Failed to reinit register cache: %d\n",  in wm8994_device_init()
512 		dev_err(wm8994->dev, "Failed to reset device: %d\n", ret);  in wm8994_device_init()
517 		ret = regmap_register_patch(wm8994->regmap, regmap_patch,  in wm8994_device_init()
520 			dev_err(wm8994->dev, "Failed to register patch: %d\n",  in wm8994_device_init()
526 	wm8994->irq_base = pdata->irq_base;  in wm8994_device_init()
527 	wm8994->gpio_base = pdata->gpio_base;  in wm8994_device_init()
529 	/* GPIO configuration is only applied if it's non-zero */  in wm8994_device_init()
530 	for (i = 0; i < ARRAY_SIZE(pdata->gpio_defaults); i++) {  in wm8994_device_init()
531 		if (pdata->gpio_defaults[i]) {  in wm8994_device_init()
533 					0xffff, pdata->gpio_defaults[i]);  in wm8994_device_init()
537 	wm8994->ldo_ena_always_driven = pdata->ldo_ena_always_driven;  in wm8994_device_init()
539 	if (pdata->spkmode_pu)  in wm8994_device_init()
541 	if (pdata->csnaddr_pd)  in wm8994_device_init()
567 	ret = mfd_add_devices(wm8994->dev, -1,  in wm8994_device_init()
571 		dev_err(wm8994->dev, "Failed to add children: %d\n", ret);  in wm8994_device_init()
575 	pm_runtime_set_active(wm8994->dev);  in wm8994_device_init()
576 	pm_runtime_enable(wm8994->dev);  in wm8994_device_init()
577 	pm_runtime_idle(wm8994->dev);  in wm8994_device_init()
584 	regulator_bulk_disable(wm8994->num_supplies,  in wm8994_device_init()
585 			       wm8994->supplies);  in wm8994_device_init()
587 	regulator_bulk_free(wm8994->num_supplies, wm8994->supplies);  in wm8994_device_init()
589 	mfd_remove_devices(wm8994->dev);  in wm8994_device_init()
595 	pm_runtime_get_sync(wm8994->dev);  in wm8994_device_exit()
596 	pm_runtime_disable(wm8994->dev);  in wm8994_device_exit()
597 	pm_runtime_put_noidle(wm8994->dev);  in wm8994_device_exit()
599 	regulator_bulk_disable(wm8994->num_supplies, wm8994->supplies);  in wm8994_device_exit()
600 	regulator_bulk_free(wm8994->num_supplies, wm8994->supplies);  in wm8994_device_exit()
601 	mfd_remove_devices(wm8994->dev);  in wm8994_device_exit()
617 	wm8994 = devm_kzalloc(&i2c->dev, sizeof(struct wm8994), GFP_KERNEL);  in wm8994_i2c_probe()
619 		return -ENOMEM;  in wm8994_i2c_probe()
622 	wm8994->dev = &i2c->dev;  in wm8994_i2c_probe()
623 	wm8994->irq = i2c->irq;  in wm8994_i2c_probe()
625 	wm8994->type = (kernel_ulong_t)i2c_get_match_data(i2c);  in wm8994_i2c_probe()
627 	wm8994->regmap = devm_regmap_init_i2c(i2c, &wm8994_base_regmap_config);  in wm8994_i2c_probe()
628 	if (IS_ERR(wm8994->regmap)) {  in wm8994_i2c_probe()
629 		ret = PTR_ERR(wm8994->regmap);  in wm8994_i2c_probe()
630 		dev_err(wm8994->dev, "Failed to allocate register map: %d\n",  in wm8994_i2c_probe()
635 	return wm8994_device_init(wm8994, i2c->irq);  in wm8994_i2c_probe()