12874c5fdSThomas Gleixner // SPDX-License-Identifier: GPL-2.0-or-later
29e501086SMark Brown /*
39e501086SMark Brown * wm8994-core.c -- Device access for Wolfson WM8994
49e501086SMark Brown *
59e501086SMark Brown * Copyright 2009 Wolfson Microelectronics PLC.
69e501086SMark Brown *
79e501086SMark Brown * Author: Mark Brown <broonie@opensource.wolfsonmicro.com>
89e501086SMark Brown */
99e501086SMark Brown
109e501086SMark Brown #include <linux/kernel.h>
119e501086SMark Brown #include <linux/module.h>
125a0e3ad6STejun Heo #include <linux/slab.h>
139e501086SMark Brown #include <linux/i2c.h>
14d6c645fcSMark Brown #include <linux/err.h>
159e501086SMark Brown #include <linux/delay.h>
169e501086SMark Brown #include <linux/mfd/core.h>
1720fb2772SMark Brown #include <linux/of.h>
1820fb2772SMark Brown #include <linux/of_device.h>
19d450f19eSMark Brown #include <linux/pm_runtime.h>
20d6c645fcSMark Brown #include <linux/regmap.h>
219e501086SMark Brown #include <linux/regulator/consumer.h>
229e501086SMark Brown #include <linux/regulator/machine.h>
239e501086SMark Brown
249e501086SMark Brown #include <linux/mfd/wm8994/core.h>
259e501086SMark Brown #include <linux/mfd/wm8994/pdata.h>
269e501086SMark Brown #include <linux/mfd/wm8994/registers.h>
279e501086SMark Brown
28c3f13861SMark Brown #include "wm8994.h"
299e501086SMark Brown
30ad59de48SGeert Uytterhoeven static const struct mfd_cell wm8994_regulator_devs[] = {
31d450f19eSMark Brown {
32d450f19eSMark Brown .name = "wm8994-ldo",
33fef22cb4SInha Song .id = 0,
34d450f19eSMark Brown .pm_runtime_no_callbacks = true,
35d450f19eSMark Brown },
36d450f19eSMark Brown {
37d450f19eSMark Brown .name = "wm8994-ldo",
38fef22cb4SInha Song .id = 1,
39d450f19eSMark Brown .pm_runtime_no_callbacks = true,
40d450f19eSMark Brown },
419e501086SMark Brown };
429e501086SMark Brown
43f977284aSRikard Falkeborn static const struct resource wm8994_codec_resources[] = {
44c9fbf7e0SMark Brown {
45c9fbf7e0SMark Brown .start = WM8994_IRQ_TEMP_SHUT,
46c9fbf7e0SMark Brown .end = WM8994_IRQ_TEMP_WARN,
47c9fbf7e0SMark Brown .flags = IORESOURCE_IRQ,
48c9fbf7e0SMark Brown },
49c9fbf7e0SMark Brown };
50c9fbf7e0SMark Brown
51f977284aSRikard Falkeborn static const struct resource wm8994_gpio_resources[] = {
52c9fbf7e0SMark Brown {
53c9fbf7e0SMark Brown .start = WM8994_IRQ_GPIO(1),
54c9fbf7e0SMark Brown .end = WM8994_IRQ_GPIO(11),
55c9fbf7e0SMark Brown .flags = IORESOURCE_IRQ,
56c9fbf7e0SMark Brown },
57c9fbf7e0SMark Brown };
58c9fbf7e0SMark Brown
59ad59de48SGeert Uytterhoeven static const struct mfd_cell wm8994_devs[] = {
60c9fbf7e0SMark Brown {
61c9fbf7e0SMark Brown .name = "wm8994-codec",
62c9fbf7e0SMark Brown .num_resources = ARRAY_SIZE(wm8994_codec_resources),
63c9fbf7e0SMark Brown .resources = wm8994_codec_resources,
64c9fbf7e0SMark Brown },
65c9fbf7e0SMark Brown
66c9fbf7e0SMark Brown {
67c9fbf7e0SMark Brown .name = "wm8994-gpio",
68c9fbf7e0SMark Brown .num_resources = ARRAY_SIZE(wm8994_gpio_resources),
69c9fbf7e0SMark Brown .resources = wm8994_gpio_resources,
70d450f19eSMark Brown .pm_runtime_no_callbacks = true,
71c9fbf7e0SMark Brown },
729e501086SMark Brown };
739e501086SMark Brown
749e501086SMark Brown /*
759e501086SMark Brown * Supplies for the main bulk of CODEC; the LDO supplies are ignored
769e501086SMark Brown * and should be handled via the standard regulator API supply
779e501086SMark Brown * management.
789e501086SMark Brown */
79b1f43bf3SMark Brown static const char *wm1811_main_supplies[] = {
80b1f43bf3SMark Brown "DBVDD1",
81b1f43bf3SMark Brown "DBVDD2",
82b1f43bf3SMark Brown "DBVDD3",
83b1f43bf3SMark Brown "DCVDD",
84b1f43bf3SMark Brown "AVDD1",
85b1f43bf3SMark Brown "AVDD2",
86b1f43bf3SMark Brown "CPVDD",
87b1f43bf3SMark Brown "SPKVDD1",
88b1f43bf3SMark Brown "SPKVDD2",
89b1f43bf3SMark Brown };
90b1f43bf3SMark Brown
919e501086SMark Brown static const char *wm8994_main_supplies[] = {
929e501086SMark Brown "DBVDD",
939e501086SMark Brown "DCVDD",
949e501086SMark Brown "AVDD1",
959e501086SMark Brown "AVDD2",
969e501086SMark Brown "CPVDD",
979e501086SMark Brown "SPKVDD1",
989e501086SMark Brown "SPKVDD2",
999e501086SMark Brown };
1009e501086SMark Brown
101559e0df6SMark Brown static const char *wm8958_main_supplies[] = {
102559e0df6SMark Brown "DBVDD1",
103559e0df6SMark Brown "DBVDD2",
104559e0df6SMark Brown "DBVDD3",
105559e0df6SMark Brown "DCVDD",
106559e0df6SMark Brown "AVDD1",
107559e0df6SMark Brown "AVDD2",
108559e0df6SMark Brown "CPVDD",
109559e0df6SMark Brown "SPKVDD1",
110559e0df6SMark Brown "SPKVDD2",
111559e0df6SMark Brown };
112559e0df6SMark Brown
wm8994_suspend(struct device * dev)113d450f19eSMark Brown static int wm8994_suspend(struct device *dev)
1149e501086SMark Brown {
1159e501086SMark Brown struct wm8994 *wm8994 = dev_get_drvdata(dev);
1169e501086SMark Brown int ret;
1179e501086SMark Brown
11877bd70e9SMark Brown /* Don't actually go through with the suspend if the CODEC is
119ebe38f80SMark Brown * still active for accessory detect. */
1205f40c6b6SMark Brown switch (wm8994->type) {
1215f40c6b6SMark Brown case WM8958:
122b5488b6eSMark Brown case WM1811:
1235f40c6b6SMark Brown ret = wm8994_reg_read(wm8994, WM8958_MIC_DETECT_1);
1245f40c6b6SMark Brown if (ret < 0) {
1255f40c6b6SMark Brown dev_err(dev, "Failed to read power status: %d\n", ret);
1265f40c6b6SMark Brown } else if (ret & WM8958_MICD_ENA) {
1275f40c6b6SMark Brown dev_dbg(dev, "CODEC still active, ignoring suspend\n");
1285f40c6b6SMark Brown return 0;
1295f40c6b6SMark Brown }
1305f40c6b6SMark Brown break;
1315f40c6b6SMark Brown default:
1325f40c6b6SMark Brown break;
1335f40c6b6SMark Brown }
1345f40c6b6SMark Brown
135881de670SMark Brown /* Disable LDO pulldowns while the device is suspended if we
136881de670SMark Brown * don't know that something will be driving them. */
137881de670SMark Brown if (!wm8994->ldo_ena_always_driven)
138881de670SMark Brown wm8994_set_bits(wm8994, WM8994_PULL_CONTROL_2,
139881de670SMark Brown WM8994_LDO1ENA_PD | WM8994_LDO2ENA_PD,
140881de670SMark Brown WM8994_LDO1ENA_PD | WM8994_LDO2ENA_PD);
141881de670SMark Brown
142f40dff9eSMark Brown /* Explicitly put the device into reset in case regulators
143f40dff9eSMark Brown * don't get disabled in order to ensure consistent restart.
144f40dff9eSMark Brown */
145be79cf2fSMark Brown wm8994_reg_write(wm8994, WM8994_SOFTWARE_RESET,
146be79cf2fSMark Brown wm8994_reg_read(wm8994, WM8994_SOFTWARE_RESET));
147f40dff9eSMark Brown
148ed393dcdSMark Brown regcache_mark_dirty(wm8994->regmap);
149ed393dcdSMark Brown
15078a27cd3SChris Rattray /* Restore GPIO registers to prevent problems with mismatched
15178a27cd3SChris Rattray * pin configurations.
15278a27cd3SChris Rattray */
153ed393dcdSMark Brown ret = regcache_sync_region(wm8994->regmap, WM8994_GPIO_1,
154ed393dcdSMark Brown WM8994_GPIO_11);
15578a27cd3SChris Rattray if (ret != 0)
15678a27cd3SChris Rattray dev_err(dev, "Failed to restore GPIO registers: %d\n", ret);
15778a27cd3SChris Rattray
1581a2017b7SMark Brown /* In case one of the GPIOs is used as a wake input. */
1591a2017b7SMark Brown ret = regcache_sync_region(wm8994->regmap,
1601a2017b7SMark Brown WM8994_INTERRUPT_STATUS_1_MASK,
1611a2017b7SMark Brown WM8994_INTERRUPT_STATUS_1_MASK);
1621a2017b7SMark Brown if (ret != 0)
1631a2017b7SMark Brown dev_err(dev, "Failed to restore interrupt mask: %d\n", ret);
1641a2017b7SMark Brown
1653befc925SMark Brown regcache_cache_only(wm8994->regmap, true);
16677bd70e9SMark Brown wm8994->suspended = true;
16777bd70e9SMark Brown
168559e0df6SMark Brown ret = regulator_bulk_disable(wm8994->num_supplies,
1699e501086SMark Brown wm8994->supplies);
1709e501086SMark Brown if (ret != 0) {
1719e501086SMark Brown dev_err(dev, "Failed to disable supplies: %d\n", ret);
1729e501086SMark Brown return ret;
1739e501086SMark Brown }
1749e501086SMark Brown
1759e501086SMark Brown return 0;
1769e501086SMark Brown }
1779e501086SMark Brown
wm8994_resume(struct device * dev)178d450f19eSMark Brown static int wm8994_resume(struct device *dev)
1799e501086SMark Brown {
1809e501086SMark Brown struct wm8994 *wm8994 = dev_get_drvdata(dev);
181c3f13861SMark Brown int ret;
1829e501086SMark Brown
18377bd70e9SMark Brown /* We may have lied to the PM core about suspending */
18477bd70e9SMark Brown if (!wm8994->suspended)
18577bd70e9SMark Brown return 0;
18677bd70e9SMark Brown
187559e0df6SMark Brown ret = regulator_bulk_enable(wm8994->num_supplies,
1889e501086SMark Brown wm8994->supplies);
1899e501086SMark Brown if (ret != 0) {
1909e501086SMark Brown dev_err(dev, "Failed to enable supplies: %d\n", ret);
1919e501086SMark Brown return ret;
1929e501086SMark Brown }
1939e501086SMark Brown
1943befc925SMark Brown regcache_cache_only(wm8994->regmap, false);
195c3f13861SMark Brown ret = regcache_sync(wm8994->regmap);
196c3f13861SMark Brown if (ret != 0) {
197c3f13861SMark Brown dev_err(dev, "Failed to restore register map: %d\n", ret);
198c3f13861SMark Brown goto err_enable;
19998ae1ccaSMark Brown }
200c9fbf7e0SMark Brown
201881de670SMark Brown /* Disable LDO pulldowns while the device is active */
202881de670SMark Brown wm8994_set_bits(wm8994, WM8994_PULL_CONTROL_2,
203881de670SMark Brown WM8994_LDO1ENA_PD | WM8994_LDO2ENA_PD,
204881de670SMark Brown 0);
205881de670SMark Brown
20677bd70e9SMark Brown wm8994->suspended = false;
20777bd70e9SMark Brown
2089e501086SMark Brown return 0;
209c3f13861SMark Brown
210c3f13861SMark Brown err_enable:
211c3f13861SMark Brown regulator_bulk_disable(wm8994->num_supplies, wm8994->supplies);
212c3f13861SMark Brown
213c3f13861SMark Brown return ret;
2149e501086SMark Brown }
2159e501086SMark Brown
2169e501086SMark Brown #ifdef CONFIG_REGULATOR
wm8994_ldo_in_use(struct wm8994_pdata * pdata,int ldo)2179e501086SMark Brown static int wm8994_ldo_in_use(struct wm8994_pdata *pdata, int ldo)
2189e501086SMark Brown {
2199e501086SMark Brown struct wm8994_ldo_pdata *ldo_pdata;
2209e501086SMark Brown
2219e501086SMark Brown if (!pdata)
2229e501086SMark Brown return 0;
2239e501086SMark Brown
2249e501086SMark Brown ldo_pdata = &pdata->ldo[ldo];
2259e501086SMark Brown
2269e501086SMark Brown if (!ldo_pdata->init_data)
2279e501086SMark Brown return 0;
2289e501086SMark Brown
2299e501086SMark Brown return ldo_pdata->init_data->num_consumer_supplies != 0;
2309e501086SMark Brown }
2319e501086SMark Brown #else
wm8994_ldo_in_use(struct wm8994_pdata * pdata,int ldo)2329e501086SMark Brown static int wm8994_ldo_in_use(struct wm8994_pdata *pdata, int ldo)
2339e501086SMark Brown {
2349e501086SMark Brown return 0;
2359e501086SMark Brown }
2369e501086SMark Brown #endif
2379e501086SMark Brown
2388019ff6cSNariman Poushin static const struct reg_sequence wm8994_revc_patch[] = {
239462835e4SMark Brown { 0x102, 0x3 },
240462835e4SMark Brown { 0x56, 0x3 },
241462835e4SMark Brown { 0x817, 0x0 },
242462835e4SMark Brown { 0x102, 0x0 },
243462835e4SMark Brown };
244462835e4SMark Brown
2458019ff6cSNariman Poushin static const struct reg_sequence wm8958_reva_patch[] = {
246462835e4SMark Brown { 0x102, 0x3 },
247462835e4SMark Brown { 0xcb, 0x81 },
248462835e4SMark Brown { 0x817, 0x0 },
249462835e4SMark Brown { 0x102, 0x0 },
250462835e4SMark Brown };
251462835e4SMark Brown
2528019ff6cSNariman Poushin static const struct reg_sequence wm1811_reva_patch[] = {
253462835e4SMark Brown { 0x102, 0x3 },
2549282a7b9SMark Brown { 0x56, 0xc07 },
255462835e4SMark Brown { 0x5d, 0x7e },
256462835e4SMark Brown { 0x5e, 0x0 },
257462835e4SMark Brown { 0x102, 0x0 },
258462835e4SMark Brown };
259462835e4SMark Brown
26020fb2772SMark Brown #ifdef CONFIG_OF
wm8994_set_pdata_from_of(struct wm8994 * wm8994)26120fb2772SMark Brown static int wm8994_set_pdata_from_of(struct wm8994 *wm8994)
26220fb2772SMark Brown {
26320fb2772SMark Brown struct device_node *np = wm8994->dev->of_node;
26420fb2772SMark Brown struct wm8994_pdata *pdata = &wm8994->pdata;
26520fb2772SMark Brown int i;
26620fb2772SMark Brown
26720fb2772SMark Brown if (!np)
26820fb2772SMark Brown return 0;
26920fb2772SMark Brown
27020fb2772SMark Brown if (of_property_read_u32_array(np, "wlf,gpio-cfg", pdata->gpio_defaults,
27120fb2772SMark Brown ARRAY_SIZE(pdata->gpio_defaults)) >= 0) {
27220fb2772SMark Brown for (i = 0; i < ARRAY_SIZE(pdata->gpio_defaults); i++) {
27320fb2772SMark Brown if (wm8994->pdata.gpio_defaults[i] == 0)
27420fb2772SMark Brown pdata->gpio_defaults[i]
27520fb2772SMark Brown = WM8994_CONFIGURE_GPIO;
27620fb2772SMark Brown }
27720fb2772SMark Brown }
27820fb2772SMark Brown
27920fb2772SMark Brown of_property_read_u32_array(np, "wlf,micbias-cfg", pdata->micbias,
28020fb2772SMark Brown ARRAY_SIZE(pdata->micbias));
28120fb2772SMark Brown
28201330edcSRob Herring pdata->lineout1_diff = !of_property_read_bool(np, "wlf,lineout1-se");
28301330edcSRob Herring pdata->lineout2_diff = !of_property_read_bool(np, "wlf,lineout2-se");
28401330edcSRob Herring pdata->lineout1fb = of_property_read_bool(np, "wlf,lineout1-feedback");
28501330edcSRob Herring pdata->lineout2fb = of_property_read_bool(np, "wlf,lineout2-feedback") ||
28601330edcSRob Herring of_property_read_bool(np, "wlf,ldoena-always-driven");
28720fb2772SMark Brown
288102370fbSAlberto Panizzo pdata->spkmode_pu = of_property_read_bool(np, "wlf,spkmode-pu");
289102370fbSAlberto Panizzo
2904d3e55bcSAlberto Panizzo pdata->csnaddr_pd = of_property_read_bool(np, "wlf,csnaddr-pd");
2914d3e55bcSAlberto Panizzo
29220fb2772SMark Brown return 0;
29320fb2772SMark Brown }
29420fb2772SMark Brown #else
wm8994_set_pdata_from_of(struct wm8994 * wm8994)29520fb2772SMark Brown static int wm8994_set_pdata_from_of(struct wm8994 *wm8994)
29620fb2772SMark Brown {
29720fb2772SMark Brown return 0;
29820fb2772SMark Brown }
29920fb2772SMark Brown #endif
30020fb2772SMark Brown
3019e501086SMark Brown /*
3029e501086SMark Brown * Instantiate the generic non-control parts of the device.
3039e501086SMark Brown */
wm8994_device_init(struct wm8994 * wm8994,int irq)304f791be49SBill Pemberton static int wm8994_device_init(struct wm8994 *wm8994, int irq)
3059e501086SMark Brown {
306a8a8fc28SMark Brown struct wm8994_pdata *pdata;
30734697898SMark Brown struct regmap_config *regmap_config;
3088019ff6cSNariman Poushin const struct reg_sequence *regmap_patch = NULL;
309559e0df6SMark Brown const char *devname;
310222bc784SJingoo Han int ret, i, patch_regs = 0;
31126c34c25SMark Brown int pulls = 0;
3129e501086SMark Brown
313a8a8fc28SMark Brown if (dev_get_platdata(wm8994->dev)) {
314a8a8fc28SMark Brown pdata = dev_get_platdata(wm8994->dev);
315a8a8fc28SMark Brown wm8994->pdata = *pdata;
316a8a8fc28SMark Brown }
317a8a8fc28SMark Brown pdata = &wm8994->pdata;
318a8a8fc28SMark Brown
31920fb2772SMark Brown ret = wm8994_set_pdata_from_of(wm8994);
32020fb2772SMark Brown if (ret != 0)
32120fb2772SMark Brown return ret;
32220fb2772SMark Brown
3239e501086SMark Brown /* Add the on-chip regulators first for bootstrapping */
324fef22cb4SInha Song ret = mfd_add_devices(wm8994->dev, 0,
3259e501086SMark Brown wm8994_regulator_devs,
3269e501086SMark Brown ARRAY_SIZE(wm8994_regulator_devs),
32755692af5SMark Brown NULL, 0, NULL);
3289e501086SMark Brown if (ret != 0) {
3299e501086SMark Brown dev_err(wm8994->dev, "Failed to add children: %d\n", ret);
3309db4249fSMark Brown goto err;
3319e501086SMark Brown }
3329e501086SMark Brown
333559e0df6SMark Brown switch (wm8994->type) {
334b1f43bf3SMark Brown case WM1811:
335b1f43bf3SMark Brown wm8994->num_supplies = ARRAY_SIZE(wm1811_main_supplies);
336b1f43bf3SMark Brown break;
337559e0df6SMark Brown case WM8994:
338559e0df6SMark Brown wm8994->num_supplies = ARRAY_SIZE(wm8994_main_supplies);
339559e0df6SMark Brown break;
340559e0df6SMark Brown case WM8958:
341559e0df6SMark Brown wm8994->num_supplies = ARRAY_SIZE(wm8958_main_supplies);
342559e0df6SMark Brown break;
343559e0df6SMark Brown default:
344559e0df6SMark Brown BUG();
3459db4249fSMark Brown goto err;
346559e0df6SMark Brown }
347559e0df6SMark Brown
348a86854d0SKees Cook wm8994->supplies = devm_kcalloc(wm8994->dev,
349a86854d0SKees Cook wm8994->num_supplies,
350a86854d0SKees Cook sizeof(struct regulator_bulk_data),
351a86854d0SKees Cook GFP_KERNEL);
352fccbd21fSAxel Lin if (!wm8994->supplies) {
353fccbd21fSAxel Lin ret = -ENOMEM;
3549db4249fSMark Brown goto err;
355fccbd21fSAxel Lin }
3569e501086SMark Brown
357559e0df6SMark Brown switch (wm8994->type) {
358b1f43bf3SMark Brown case WM1811:
359b1f43bf3SMark Brown for (i = 0; i < ARRAY_SIZE(wm1811_main_supplies); i++)
360b1f43bf3SMark Brown wm8994->supplies[i].supply = wm1811_main_supplies[i];
361b1f43bf3SMark Brown break;
362559e0df6SMark Brown case WM8994:
3639e501086SMark Brown for (i = 0; i < ARRAY_SIZE(wm8994_main_supplies); i++)
3649e501086SMark Brown wm8994->supplies[i].supply = wm8994_main_supplies[i];
365559e0df6SMark Brown break;
366559e0df6SMark Brown case WM8958:
367559e0df6SMark Brown for (i = 0; i < ARRAY_SIZE(wm8958_main_supplies); i++)
368559e0df6SMark Brown wm8994->supplies[i].supply = wm8958_main_supplies[i];
369559e0df6SMark Brown break;
370559e0df6SMark Brown default:
371559e0df6SMark Brown BUG();
3729db4249fSMark Brown goto err;
373559e0df6SMark Brown }
3749e501086SMark Brown
375202b5689SViresh Kumar /*
376202b5689SViresh Kumar * Can't use devres helper here as some of the supplies are provided by
377202b5689SViresh Kumar * wm8994->dev's children (regulators) and those regulators are
378202b5689SViresh Kumar * unregistered by the devres core before the supplies are freed.
379202b5689SViresh Kumar */
380202b5689SViresh Kumar ret = regulator_bulk_get(wm8994->dev, wm8994->num_supplies,
3819e501086SMark Brown wm8994->supplies);
3829e501086SMark Brown if (ret != 0) {
3837ff864e1SMarek Szyprowski if (ret != -EPROBE_DEFER)
3847ff864e1SMarek Szyprowski dev_err(wm8994->dev, "Failed to get supplies: %d\n",
3857ff864e1SMarek Szyprowski ret);
3869db4249fSMark Brown goto err;
3879e501086SMark Brown }
3889e501086SMark Brown
3893e56c468SViresh Kumar ret = regulator_bulk_enable(wm8994->num_supplies, wm8994->supplies);
3909e501086SMark Brown if (ret != 0) {
3919e501086SMark Brown dev_err(wm8994->dev, "Failed to enable supplies: %d\n", ret);
392202b5689SViresh Kumar goto err_regulator_free;
3939e501086SMark Brown }
3949e501086SMark Brown
3959e501086SMark Brown ret = wm8994_reg_read(wm8994, WM8994_SOFTWARE_RESET);
3969e501086SMark Brown if (ret < 0) {
3979e501086SMark Brown dev_err(wm8994->dev, "Failed to read ID register\n");
3989e501086SMark Brown goto err_enable;
3999e501086SMark Brown }
400559e0df6SMark Brown switch (ret) {
401b1f43bf3SMark Brown case 0x1811:
402b1f43bf3SMark Brown devname = "WM1811";
403b1f43bf3SMark Brown if (wm8994->type != WM1811)
404b1f43bf3SMark Brown dev_warn(wm8994->dev, "Device registered as type %d\n",
405b1f43bf3SMark Brown wm8994->type);
406b1f43bf3SMark Brown wm8994->type = WM1811;
407b1f43bf3SMark Brown break;
408559e0df6SMark Brown case 0x8994:
409559e0df6SMark Brown devname = "WM8994";
410559e0df6SMark Brown if (wm8994->type != WM8994)
411559e0df6SMark Brown dev_warn(wm8994->dev, "Device registered as type %d\n",
412559e0df6SMark Brown wm8994->type);
413559e0df6SMark Brown wm8994->type = WM8994;
414559e0df6SMark Brown break;
415559e0df6SMark Brown case 0x8958:
416559e0df6SMark Brown devname = "WM8958";
417559e0df6SMark Brown if (wm8994->type != WM8958)
418559e0df6SMark Brown dev_warn(wm8994->dev, "Device registered as type %d\n",
419559e0df6SMark Brown wm8994->type);
420559e0df6SMark Brown wm8994->type = WM8958;
421559e0df6SMark Brown break;
422559e0df6SMark Brown default:
4239e501086SMark Brown dev_err(wm8994->dev, "Device is not a WM8994, ID is %x\n",
4249e501086SMark Brown ret);
4259e501086SMark Brown ret = -EINVAL;
4269e501086SMark Brown goto err_enable;
4279e501086SMark Brown }
4289e501086SMark Brown
4299e501086SMark Brown ret = wm8994_reg_read(wm8994, WM8994_CHIP_REVISION);
4309e501086SMark Brown if (ret < 0) {
4319e501086SMark Brown dev_err(wm8994->dev, "Failed to read revision register: %d\n",
4329e501086SMark Brown ret);
4339e501086SMark Brown goto err_enable;
4349e501086SMark Brown }
435cc7a7279SMark Brown wm8994->revision = ret & WM8994_CHIP_REV_MASK;
436cc7a7279SMark Brown wm8994->cust_id = (ret & WM8994_CUST_ID_MASK) >> WM8994_CUST_ID_SHIFT;
4379e501086SMark Brown
438a2495bc7SMark Brown switch (wm8994->type) {
439a2495bc7SMark Brown case WM8994:
4407ed5849cSMark Brown switch (wm8994->revision) {
4419e501086SMark Brown case 0:
4429e501086SMark Brown case 1:
443559e0df6SMark Brown dev_warn(wm8994->dev,
444559e0df6SMark Brown "revision %c not fully supported\n",
4457ed5849cSMark Brown 'A' + wm8994->revision);
4469e501086SMark Brown break;
447462835e4SMark Brown case 2:
448462835e4SMark Brown case 3:
449d54e17f9SMark Brown default:
450462835e4SMark Brown regmap_patch = wm8994_revc_patch;
451462835e4SMark Brown patch_regs = ARRAY_SIZE(wm8994_revc_patch);
452462835e4SMark Brown break;
4539e501086SMark Brown }
454a2495bc7SMark Brown break;
455462835e4SMark Brown
456462835e4SMark Brown case WM8958:
457462835e4SMark Brown switch (wm8994->revision) {
458462835e4SMark Brown case 0:
459462835e4SMark Brown regmap_patch = wm8958_reva_patch;
460462835e4SMark Brown patch_regs = ARRAY_SIZE(wm8958_reva_patch);
461462835e4SMark Brown break;
462462835e4SMark Brown default:
463462835e4SMark Brown break;
464462835e4SMark Brown }
465462835e4SMark Brown break;
466462835e4SMark Brown
467443e67edSMark Brown case WM1811:
468443e67edSMark Brown /* Revision C did not change the relevant layer */
4697ed5849cSMark Brown if (wm8994->revision > 1)
4707ed5849cSMark Brown wm8994->revision++;
471d54e17f9SMark Brown
472462835e4SMark Brown regmap_patch = wm1811_reva_patch;
473462835e4SMark Brown patch_regs = ARRAY_SIZE(wm1811_reva_patch);
474443e67edSMark Brown break;
475462835e4SMark Brown
476462835e4SMark Brown default:
477462835e4SMark Brown break;
478462835e4SMark Brown }
4799e501086SMark Brown
480cc7a7279SMark Brown dev_info(wm8994->dev, "%s revision %c CUST_ID %02x\n", devname,
481cc7a7279SMark Brown 'A' + wm8994->revision, wm8994->cust_id);
4829e501086SMark Brown
48334697898SMark Brown switch (wm8994->type) {
48434697898SMark Brown case WM1811:
48534697898SMark Brown regmap_config = &wm1811_regmap_config;
48634697898SMark Brown break;
48734697898SMark Brown case WM8994:
48834697898SMark Brown regmap_config = &wm8994_regmap_config;
48934697898SMark Brown break;
49034697898SMark Brown case WM8958:
49134697898SMark Brown regmap_config = &wm8958_regmap_config;
49234697898SMark Brown break;
49334697898SMark Brown default:
49434697898SMark Brown dev_err(wm8994->dev, "Unknown device type %d\n", wm8994->type);
495df47df55SAnthony Brandon ret = -EINVAL;
496df47df55SAnthony Brandon goto err_enable;
49734697898SMark Brown }
49834697898SMark Brown
49934697898SMark Brown ret = regmap_reinit_cache(wm8994->regmap, regmap_config);
50034697898SMark Brown if (ret != 0) {
50134697898SMark Brown dev_err(wm8994->dev, "Failed to reinit register cache: %d\n",
50234697898SMark Brown ret);
503df47df55SAnthony Brandon goto err_enable;
50434697898SMark Brown }
5059e501086SMark Brown
506f3799e93SMark Brown /* Explicitly put the device into reset in case regulators
507f3799e93SMark Brown * don't get disabled in order to ensure we know the device
508f3799e93SMark Brown * state.
509f3799e93SMark Brown */
510f3799e93SMark Brown ret = wm8994_reg_write(wm8994, WM8994_SOFTWARE_RESET,
511f3799e93SMark Brown wm8994_reg_read(wm8994, WM8994_SOFTWARE_RESET));
512f3799e93SMark Brown if (ret != 0) {
513f3799e93SMark Brown dev_err(wm8994->dev, "Failed to reset device: %d\n", ret);
514df47df55SAnthony Brandon goto err_enable;
515f3799e93SMark Brown }
516f3799e93SMark Brown
517462835e4SMark Brown if (regmap_patch) {
518462835e4SMark Brown ret = regmap_register_patch(wm8994->regmap, regmap_patch,
519462835e4SMark Brown patch_regs);
520462835e4SMark Brown if (ret != 0) {
521462835e4SMark Brown dev_err(wm8994->dev, "Failed to register patch: %d\n",
522462835e4SMark Brown ret);
523df47df55SAnthony Brandon goto err_enable;
524462835e4SMark Brown }
525462835e4SMark Brown }
526462835e4SMark Brown
527c9fbf7e0SMark Brown wm8994->irq_base = pdata->irq_base;
5289e501086SMark Brown wm8994->gpio_base = pdata->gpio_base;
5299e501086SMark Brown
5309e501086SMark Brown /* GPIO configuration is only applied if it's non-zero */
5319e501086SMark Brown for (i = 0; i < ARRAY_SIZE(pdata->gpio_defaults); i++) {
5329e501086SMark Brown if (pdata->gpio_defaults[i]) {
5339e501086SMark Brown wm8994_set_bits(wm8994, WM8994_GPIO_1 + i,
534a8a8fc28SMark Brown 0xffff, pdata->gpio_defaults[i]);
5359e501086SMark Brown }
5369e501086SMark Brown }
537881de670SMark Brown
538881de670SMark Brown wm8994->ldo_ena_always_driven = pdata->ldo_ena_always_driven;
53926c34c25SMark Brown
54026c34c25SMark Brown if (pdata->spkmode_pu)
54126c34c25SMark Brown pulls |= WM8994_SPKMODE_PU;
5424d3e55bcSAlberto Panizzo if (pdata->csnaddr_pd)
5434d3e55bcSAlberto Panizzo pulls |= WM8994_CSNADDR_PD;
5449e501086SMark Brown
54526c34c25SMark Brown /* Disable unneeded pulls */
546881de670SMark Brown wm8994_set_bits(wm8994, WM8994_PULL_CONTROL_2,
54726c34c25SMark Brown WM8994_LDO1ENA_PD | WM8994_LDO2ENA_PD |
54826c34c25SMark Brown WM8994_SPKMODE_PU | WM8994_CSNADDR_PD,
54926c34c25SMark Brown pulls);
550881de670SMark Brown
5519e501086SMark Brown /* In some system designs where the regulators are not in use,
5529e501086SMark Brown * we can achieve a small reduction in leakage currents by
5539e501086SMark Brown * floating LDO outputs. This bit makes no difference if the
5549e501086SMark Brown * LDOs are enabled, it only affects cases where the LDOs were
5559e501086SMark Brown * in operation and are then disabled.
5569e501086SMark Brown */
5579e501086SMark Brown for (i = 0; i < WM8994_NUM_LDO_REGS; i++) {
5589e501086SMark Brown if (wm8994_ldo_in_use(pdata, i))
5599e501086SMark Brown wm8994_set_bits(wm8994, WM8994_LDO_1 + i,
5609e501086SMark Brown WM8994_LDO1_DISCH, WM8994_LDO1_DISCH);
5619e501086SMark Brown else
5629e501086SMark Brown wm8994_set_bits(wm8994, WM8994_LDO_1 + i,
5639e501086SMark Brown WM8994_LDO1_DISCH, 0);
5649e501086SMark Brown }
5659e501086SMark Brown
566c9fbf7e0SMark Brown wm8994_irq_init(wm8994);
567c9fbf7e0SMark Brown
5689e501086SMark Brown ret = mfd_add_devices(wm8994->dev, -1,
5699e501086SMark Brown wm8994_devs, ARRAY_SIZE(wm8994_devs),
57055692af5SMark Brown NULL, 0, NULL);
5719e501086SMark Brown if (ret != 0) {
5729e501086SMark Brown dev_err(wm8994->dev, "Failed to add children: %d\n", ret);
573c9fbf7e0SMark Brown goto err_irq;
5749e501086SMark Brown }
5759e501086SMark Brown
576f4a19540SMarek Szyprowski pm_runtime_set_active(wm8994->dev);
577d450f19eSMark Brown pm_runtime_enable(wm8994->dev);
578ee67b0cdSMark Brown pm_runtime_idle(wm8994->dev);
579d450f19eSMark Brown
5809e501086SMark Brown return 0;
5819e501086SMark Brown
582c9fbf7e0SMark Brown err_irq:
583c9fbf7e0SMark Brown wm8994_irq_exit(wm8994);
5849e501086SMark Brown err_enable:
585559e0df6SMark Brown regulator_bulk_disable(wm8994->num_supplies,
5869e501086SMark Brown wm8994->supplies);
587202b5689SViresh Kumar err_regulator_free:
588202b5689SViresh Kumar regulator_bulk_free(wm8994->num_supplies, wm8994->supplies);
5899db4249fSMark Brown err:
5909e501086SMark Brown mfd_remove_devices(wm8994->dev);
5919e501086SMark Brown return ret;
5929e501086SMark Brown }
5939e501086SMark Brown
wm8994_device_exit(struct wm8994 * wm8994)5944740f73fSBill Pemberton static void wm8994_device_exit(struct wm8994 *wm8994)
5959e501086SMark Brown {
596f4a19540SMarek Szyprowski pm_runtime_get_sync(wm8994->dev);
597d450f19eSMark Brown pm_runtime_disable(wm8994->dev);
598f4a19540SMarek Szyprowski pm_runtime_put_noidle(wm8994->dev);
599c9fbf7e0SMark Brown wm8994_irq_exit(wm8994);
6003e56c468SViresh Kumar regulator_bulk_disable(wm8994->num_supplies, wm8994->supplies);
601202b5689SViresh Kumar regulator_bulk_free(wm8994->num_supplies, wm8994->supplies);
602bb63f7d3SViresh Kumar mfd_remove_devices(wm8994->dev);
6039e501086SMark Brown }
6049e501086SMark Brown
605cf763c2eSMark Brown static const struct of_device_id wm8994_of_match[] = {
60639aa3b5aSMark Brown { .compatible = "wlf,wm1811", .data = (void *)WM1811 },
60739aa3b5aSMark Brown { .compatible = "wlf,wm8994", .data = (void *)WM8994 },
60839aa3b5aSMark Brown { .compatible = "wlf,wm8958", .data = (void *)WM8958 },
609cf763c2eSMark Brown { }
610cf763c2eSMark Brown };
611cf763c2eSMark Brown MODULE_DEVICE_TABLE(of, wm8994_of_match);
612cf763c2eSMark Brown
wm8994_i2c_probe(struct i2c_client * i2c)61354f872baSUwe Kleine-König static int wm8994_i2c_probe(struct i2c_client *i2c)
6149e501086SMark Brown {
61554f872baSUwe Kleine-König const struct i2c_device_id *id = i2c_client_get_device_id(i2c);
61620fb2772SMark Brown const struct of_device_id *of_id;
6179e501086SMark Brown struct wm8994 *wm8994;
618d6c645fcSMark Brown int ret;
6199e501086SMark Brown
6202fa33494SMark Brown wm8994 = devm_kzalloc(&i2c->dev, sizeof(struct wm8994), GFP_KERNEL);
621d0a11693SAxel Lin if (wm8994 == NULL)
6229e501086SMark Brown return -ENOMEM;
6239e501086SMark Brown
6249e501086SMark Brown i2c_set_clientdata(i2c, wm8994);
6259e501086SMark Brown wm8994->dev = &i2c->dev;
626c9fbf7e0SMark Brown wm8994->irq = i2c->irq;
62720fb2772SMark Brown
62820fb2772SMark Brown if (i2c->dev.of_node) {
62920fb2772SMark Brown of_id = of_match_device(wm8994_of_match, &i2c->dev);
63020fb2772SMark Brown if (of_id)
631*5033fb97SKrzysztof Kozlowski wm8994->type = (uintptr_t)of_id->data;
63220fb2772SMark Brown } else {
633559e0df6SMark Brown wm8994->type = id->driver_data;
63420fb2772SMark Brown }
6359e501086SMark Brown
6369db4249fSMark Brown wm8994->regmap = devm_regmap_init_i2c(i2c, &wm8994_base_regmap_config);
637d6c645fcSMark Brown if (IS_ERR(wm8994->regmap)) {
638d6c645fcSMark Brown ret = PTR_ERR(wm8994->regmap);
639d6c645fcSMark Brown dev_err(wm8994->dev, "Failed to allocate register map: %d\n",
640d6c645fcSMark Brown ret);
641d6c645fcSMark Brown return ret;
642d6c645fcSMark Brown }
643d6c645fcSMark Brown
644559e0df6SMark Brown return wm8994_device_init(wm8994, i2c->irq);
6459e501086SMark Brown }
6469e501086SMark Brown
wm8994_i2c_remove(struct i2c_client * i2c)647ed5c2f5fSUwe Kleine-König static void wm8994_i2c_remove(struct i2c_client *i2c)
6489e501086SMark Brown {
6499e501086SMark Brown struct wm8994 *wm8994 = i2c_get_clientdata(i2c);
6509e501086SMark Brown
6519e501086SMark Brown wm8994_device_exit(wm8994);
6529e501086SMark Brown }
6539e501086SMark Brown
6549e501086SMark Brown static const struct i2c_device_id wm8994_i2c_id[] = {
655b1f43bf3SMark Brown { "wm1811", WM1811 },
65671d17184SMark Brown { "wm1811a", WM1811 },
657559e0df6SMark Brown { "wm8994", WM8994 },
658559e0df6SMark Brown { "wm8958", WM8958 },
6599e501086SMark Brown { }
6609e501086SMark Brown };
6619e501086SMark Brown MODULE_DEVICE_TABLE(i2c, wm8994_i2c_id);
6629e501086SMark Brown
6636394678eSMark Brown static const struct dev_pm_ops wm8994_pm_ops = {
6649dd3baecSPaul Cercueil RUNTIME_PM_OPS(wm8994_suspend, wm8994_resume, NULL)
6656394678eSMark Brown };
666d450f19eSMark Brown
6679e501086SMark Brown static struct i2c_driver wm8994_i2c_driver = {
6689e501086SMark Brown .driver = {
6699e501086SMark Brown .name = "wm8994",
6709dd3baecSPaul Cercueil .pm = pm_ptr(&wm8994_pm_ops),
6717b64f245SKrzysztof Kozlowski .of_match_table = wm8994_of_match,
6729e501086SMark Brown },
6739816d859SUwe Kleine-König .probe = wm8994_i2c_probe,
67484449216SBill Pemberton .remove = wm8994_i2c_remove,
6759e501086SMark Brown .id_table = wm8994_i2c_id,
6769e501086SMark Brown };
6779e501086SMark Brown
678ceb57d27SMark Brown module_i2c_driver(wm8994_i2c_driver);
6799e501086SMark Brown
6809e501086SMark Brown MODULE_DESCRIPTION("Core support for the WM8994 audio CODEC");
6819e501086SMark Brown MODULE_LICENSE("GPL");
6829e501086SMark Brown MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
683d4f9b542SMarek Szyprowski MODULE_SOFTDEP("pre: wm8994_regulator");
684