Merge tag 'asoc-fix-v5.14-rc4' of https://git.kernel.org/pub/scm/linux/kernel/git...
[linux-2.6-microblaze.git] / drivers / mfd / mt6397-core.c
1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3  * Copyright (c) 2014 MediaTek Inc.
4  * Author: Flora Fu, MediaTek
5  */
6
7 #include <linux/interrupt.h>
8 #include <linux/ioport.h>
9 #include <linux/module.h>
10 #include <linux/of_device.h>
11 #include <linux/of_irq.h>
12 #include <linux/regmap.h>
13 #include <linux/mfd/core.h>
14 #include <linux/mfd/mt6323/core.h>
15 #include <linux/mfd/mt6358/core.h>
16 #include <linux/mfd/mt6359/core.h>
17 #include <linux/mfd/mt6397/core.h>
18 #include <linux/mfd/mt6323/registers.h>
19 #include <linux/mfd/mt6358/registers.h>
20 #include <linux/mfd/mt6359/registers.h>
21 #include <linux/mfd/mt6397/registers.h>
22
23 #define MT6323_RTC_BASE         0x8000
24 #define MT6323_RTC_SIZE         0x40
25
26 #define MT6358_RTC_BASE         0x0588
27 #define MT6358_RTC_SIZE         0x3c
28
29 #define MT6397_RTC_BASE         0xe000
30 #define MT6397_RTC_SIZE         0x3e
31
32 #define MT6323_PWRC_BASE        0x8000
33 #define MT6323_PWRC_SIZE        0x40
34
35 static const struct resource mt6323_rtc_resources[] = {
36         DEFINE_RES_MEM(MT6323_RTC_BASE, MT6323_RTC_SIZE),
37         DEFINE_RES_IRQ(MT6323_IRQ_STATUS_RTC),
38 };
39
40 static const struct resource mt6358_rtc_resources[] = {
41         DEFINE_RES_MEM(MT6358_RTC_BASE, MT6358_RTC_SIZE),
42         DEFINE_RES_IRQ(MT6358_IRQ_RTC),
43 };
44
45 static const struct resource mt6397_rtc_resources[] = {
46         DEFINE_RES_MEM(MT6397_RTC_BASE, MT6397_RTC_SIZE),
47         DEFINE_RES_IRQ(MT6397_IRQ_RTC),
48 };
49
50 static const struct resource mt6358_keys_resources[] = {
51         DEFINE_RES_IRQ_NAMED(MT6358_IRQ_PWRKEY, "powerkey"),
52         DEFINE_RES_IRQ_NAMED(MT6358_IRQ_HOMEKEY, "homekey"),
53         DEFINE_RES_IRQ_NAMED(MT6358_IRQ_PWRKEY_R, "powerkey_r"),
54         DEFINE_RES_IRQ_NAMED(MT6358_IRQ_HOMEKEY_R, "homekey_r"),
55 };
56
57 static const struct resource mt6323_keys_resources[] = {
58         DEFINE_RES_IRQ_NAMED(MT6323_IRQ_STATUS_PWRKEY, "powerkey"),
59         DEFINE_RES_IRQ_NAMED(MT6323_IRQ_STATUS_FCHRKEY, "homekey"),
60 };
61
62 static const struct resource mt6397_keys_resources[] = {
63         DEFINE_RES_IRQ_NAMED(MT6397_IRQ_PWRKEY, "powerkey"),
64         DEFINE_RES_IRQ_NAMED(MT6397_IRQ_HOMEKEY, "homekey"),
65 };
66
67 static const struct resource mt6323_pwrc_resources[] = {
68         DEFINE_RES_MEM(MT6323_PWRC_BASE, MT6323_PWRC_SIZE),
69 };
70
71 static const struct mfd_cell mt6323_devs[] = {
72         {
73                 .name = "mt6323-rtc",
74                 .num_resources = ARRAY_SIZE(mt6323_rtc_resources),
75                 .resources = mt6323_rtc_resources,
76                 .of_compatible = "mediatek,mt6323-rtc",
77         }, {
78                 .name = "mt6323-regulator",
79                 .of_compatible = "mediatek,mt6323-regulator"
80         }, {
81                 .name = "mt6323-led",
82                 .of_compatible = "mediatek,mt6323-led"
83         }, {
84                 .name = "mtk-pmic-keys",
85                 .num_resources = ARRAY_SIZE(mt6323_keys_resources),
86                 .resources = mt6323_keys_resources,
87                 .of_compatible = "mediatek,mt6323-keys"
88         }, {
89                 .name = "mt6323-pwrc",
90                 .num_resources = ARRAY_SIZE(mt6323_pwrc_resources),
91                 .resources = mt6323_pwrc_resources,
92                 .of_compatible = "mediatek,mt6323-pwrc"
93         },
94 };
95
96 static const struct mfd_cell mt6358_devs[] = {
97         {
98                 .name = "mt6358-regulator",
99                 .of_compatible = "mediatek,mt6358-regulator"
100         }, {
101                 .name = "mt6358-rtc",
102                 .num_resources = ARRAY_SIZE(mt6358_rtc_resources),
103                 .resources = mt6358_rtc_resources,
104                 .of_compatible = "mediatek,mt6358-rtc",
105         }, {
106                 .name = "mt6358-sound",
107                 .of_compatible = "mediatek,mt6358-sound"
108         }, {
109                 .name = "mt6358-keys",
110                 .num_resources = ARRAY_SIZE(mt6358_keys_resources),
111                 .resources = mt6358_keys_resources,
112                 .of_compatible = "mediatek,mt6358-keys"
113         },
114 };
115
116 static const struct mfd_cell mt6359_devs[] = {
117         { .name = "mt6359-regulator", },
118         {
119                 .name = "mt6359-rtc",
120                 .num_resources = ARRAY_SIZE(mt6358_rtc_resources),
121                 .resources = mt6358_rtc_resources,
122                 .of_compatible = "mediatek,mt6358-rtc",
123         },
124         { .name = "mt6359-sound", },
125 };
126
127 static const struct mfd_cell mt6397_devs[] = {
128         {
129                 .name = "mt6397-rtc",
130                 .num_resources = ARRAY_SIZE(mt6397_rtc_resources),
131                 .resources = mt6397_rtc_resources,
132                 .of_compatible = "mediatek,mt6397-rtc",
133         }, {
134                 .name = "mt6397-regulator",
135                 .of_compatible = "mediatek,mt6397-regulator",
136         }, {
137                 .name = "mt6397-codec",
138                 .of_compatible = "mediatek,mt6397-codec",
139         }, {
140                 .name = "mt6397-clk",
141                 .of_compatible = "mediatek,mt6397-clk",
142         }, {
143                 .name = "mt6397-pinctrl",
144                 .of_compatible = "mediatek,mt6397-pinctrl",
145         }, {
146                 .name = "mtk-pmic-keys",
147                 .num_resources = ARRAY_SIZE(mt6397_keys_resources),
148                 .resources = mt6397_keys_resources,
149                 .of_compatible = "mediatek,mt6397-keys"
150         }
151 };
152
153 struct chip_data {
154         u32 cid_addr;
155         u32 cid_shift;
156         const struct mfd_cell *cells;
157         int cell_size;
158         int (*irq_init)(struct mt6397_chip *chip);
159 };
160
161 static const struct chip_data mt6323_core = {
162         .cid_addr = MT6323_CID,
163         .cid_shift = 0,
164         .cells = mt6323_devs,
165         .cell_size = ARRAY_SIZE(mt6323_devs),
166         .irq_init = mt6397_irq_init,
167 };
168
169 static const struct chip_data mt6358_core = {
170         .cid_addr = MT6358_SWCID,
171         .cid_shift = 8,
172         .cells = mt6358_devs,
173         .cell_size = ARRAY_SIZE(mt6358_devs),
174         .irq_init = mt6358_irq_init,
175 };
176
177 static const struct chip_data mt6359_core = {
178         .cid_addr = MT6359_SWCID,
179         .cid_shift = 8,
180         .cells = mt6359_devs,
181         .cell_size = ARRAY_SIZE(mt6359_devs),
182         .irq_init = mt6358_irq_init,
183 };
184
185 static const struct chip_data mt6397_core = {
186         .cid_addr = MT6397_CID,
187         .cid_shift = 0,
188         .cells = mt6397_devs,
189         .cell_size = ARRAY_SIZE(mt6397_devs),
190         .irq_init = mt6397_irq_init,
191 };
192
193 static int mt6397_probe(struct platform_device *pdev)
194 {
195         int ret;
196         unsigned int id = 0;
197         struct mt6397_chip *pmic;
198         const struct chip_data *pmic_core;
199
200         pmic = devm_kzalloc(&pdev->dev, sizeof(*pmic), GFP_KERNEL);
201         if (!pmic)
202                 return -ENOMEM;
203
204         pmic->dev = &pdev->dev;
205
206         /*
207          * mt6397 MFD is child device of soc pmic wrapper.
208          * Regmap is set from its parent.
209          */
210         pmic->regmap = dev_get_regmap(pdev->dev.parent, NULL);
211         if (!pmic->regmap)
212                 return -ENODEV;
213
214         pmic_core = of_device_get_match_data(&pdev->dev);
215         if (!pmic_core)
216                 return -ENODEV;
217
218         ret = regmap_read(pmic->regmap, pmic_core->cid_addr, &id);
219         if (ret) {
220                 dev_err(&pdev->dev, "Failed to read chip id: %d\n", ret);
221                 return ret;
222         }
223
224         pmic->chip_id = (id >> pmic_core->cid_shift) & 0xff;
225
226         platform_set_drvdata(pdev, pmic);
227
228         pmic->irq = platform_get_irq(pdev, 0);
229         if (pmic->irq <= 0)
230                 return pmic->irq;
231
232         ret = pmic_core->irq_init(pmic);
233         if (ret)
234                 return ret;
235
236         ret = devm_mfd_add_devices(&pdev->dev, PLATFORM_DEVID_NONE,
237                                    pmic_core->cells, pmic_core->cell_size,
238                                    NULL, 0, pmic->irq_domain);
239         if (ret) {
240                 irq_domain_remove(pmic->irq_domain);
241                 dev_err(&pdev->dev, "failed to add child devices: %d\n", ret);
242         }
243
244         return ret;
245 }
246
247 static const struct of_device_id mt6397_of_match[] = {
248         {
249                 .compatible = "mediatek,mt6323",
250                 .data = &mt6323_core,
251         }, {
252                 .compatible = "mediatek,mt6358",
253                 .data = &mt6358_core,
254         }, {
255                 .compatible = "mediatek,mt6359",
256                 .data = &mt6359_core,
257         }, {
258                 .compatible = "mediatek,mt6397",
259                 .data = &mt6397_core,
260         }, {
261                 /* sentinel */
262         }
263 };
264 MODULE_DEVICE_TABLE(of, mt6397_of_match);
265
266 static const struct platform_device_id mt6397_id[] = {
267         { "mt6397", 0 },
268         { },
269 };
270 MODULE_DEVICE_TABLE(platform, mt6397_id);
271
272 static struct platform_driver mt6397_driver = {
273         .probe = mt6397_probe,
274         .driver = {
275                 .name = "mt6397",
276                 .of_match_table = mt6397_of_match,
277         },
278         .id_table = mt6397_id,
279 };
280
281 module_platform_driver(mt6397_driver);
282
283 MODULE_AUTHOR("Flora Fu, MediaTek");
284 MODULE_DESCRIPTION("Driver for MediaTek MT6397 PMIC");
285 MODULE_LICENSE("GPL");