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13#include <linux/delay.h>
14#include <linux/gpio.h>
15#include <linux/interrupt.h>
16#include <linux/irq.h>
17#include <linux/irqdomain.h>
18#include <linux/module.h>
19#include <linux/pm_runtime.h>
20#include <linux/regmap.h>
21#include <linux/regulator/consumer.h>
22#include <linux/slab.h>
23
24#include <linux/mfd/arizona/core.h>
25#include <linux/mfd/arizona/registers.h>
26
27#include "arizona.h"
28
29static int arizona_map_irq(struct arizona *arizona, int irq)
30{
31 int ret;
32
33 ret = regmap_irq_get_virq(arizona->aod_irq_chip, irq);
34 if (ret < 0)
35 ret = regmap_irq_get_virq(arizona->irq_chip, irq);
36
37 return ret;
38}
39
40int arizona_request_irq(struct arizona *arizona, int irq, char *name,
41 irq_handler_t handler, void *data)
42{
43 irq = arizona_map_irq(arizona, irq);
44 if (irq < 0)
45 return irq;
46
47 return request_threaded_irq(irq, NULL, handler, IRQF_ONESHOT,
48 name, data);
49}
50EXPORT_SYMBOL_GPL(arizona_request_irq);
51
52void arizona_free_irq(struct arizona *arizona, int irq, void *data)
53{
54 irq = arizona_map_irq(arizona, irq);
55 if (irq < 0)
56 return;
57
58 free_irq(irq, data);
59}
60EXPORT_SYMBOL_GPL(arizona_free_irq);
61
62int arizona_set_irq_wake(struct arizona *arizona, int irq, int on)
63{
64 irq = arizona_map_irq(arizona, irq);
65 if (irq < 0)
66 return irq;
67
68 return irq_set_irq_wake(irq, on);
69}
70EXPORT_SYMBOL_GPL(arizona_set_irq_wake);
71
72static irqreturn_t arizona_boot_done(int irq, void *data)
73{
74 struct arizona *arizona = data;
75
76 dev_dbg(arizona->dev, "Boot done\n");
77
78 return IRQ_HANDLED;
79}
80
81static irqreturn_t arizona_ctrlif_err(int irq, void *data)
82{
83 struct arizona *arizona = data;
84
85
86
87
88
89 dev_err(arizona->dev, "Control interface error\n");
90
91 return IRQ_HANDLED;
92}
93
94static irqreturn_t arizona_irq_thread(int irq, void *data)
95{
96 struct arizona *arizona = data;
97 unsigned int val;
98 int ret;
99
100 ret = pm_runtime_get_sync(arizona->dev);
101 if (ret < 0) {
102 dev_err(arizona->dev, "Failed to resume device: %d\n", ret);
103 return IRQ_NONE;
104 }
105
106
107 handle_nested_irq(irq_find_mapping(arizona->virq, 0));
108
109
110
111
112
113 ret = regmap_read(arizona->regmap, ARIZONA_IRQ_PIN_STATUS, &val);
114 if (ret == 0 && val & ARIZONA_IRQ1_STS) {
115 handle_nested_irq(irq_find_mapping(arizona->virq, 1));
116 } else if (ret != 0) {
117 dev_err(arizona->dev, "Failed to read main IRQ status: %d\n",
118 ret);
119 }
120
121 pm_runtime_mark_last_busy(arizona->dev);
122 pm_runtime_put_autosuspend(arizona->dev);
123
124 return IRQ_HANDLED;
125}
126
127static void arizona_irq_enable(struct irq_data *data)
128{
129}
130
131static void arizona_irq_disable(struct irq_data *data)
132{
133}
134
135static struct irq_chip arizona_irq_chip = {
136 .name = "arizona",
137 .irq_disable = arizona_irq_disable,
138 .irq_enable = arizona_irq_enable,
139};
140
141static int arizona_irq_map(struct irq_domain *h, unsigned int virq,
142 irq_hw_number_t hw)
143{
144 struct regmap_irq_chip_data *data = h->host_data;
145
146 irq_set_chip_data(virq, data);
147 irq_set_chip_and_handler(virq, &arizona_irq_chip, handle_edge_irq);
148 irq_set_nested_thread(virq, 1);
149
150
151
152#ifdef CONFIG_ARM
153 set_irq_flags(virq, IRQF_VALID);
154#else
155 irq_set_noprobe(virq);
156#endif
157
158 return 0;
159}
160
161static struct irq_domain_ops arizona_domain_ops = {
162 .map = arizona_irq_map,
163 .xlate = irq_domain_xlate_twocell,
164};
165
166int arizona_irq_init(struct arizona *arizona)
167{
168 int flags = IRQF_ONESHOT;
169 int ret, i;
170 const struct regmap_irq_chip *aod, *irq;
171 bool ctrlif_error = true;
172
173 switch (arizona->type) {
174#ifdef CONFIG_MFD_WM5102
175 case WM5102:
176 aod = &wm5102_aod;
177 irq = &wm5102_irq;
178
179 switch (arizona->rev) {
180 case 0:
181 case 1:
182 ctrlif_error = false;
183 break;
184 default:
185 break;
186 }
187 break;
188#endif
189#ifdef CONFIG_MFD_WM5110
190 case WM5110:
191 aod = &wm5110_aod;
192 irq = &wm5110_irq;
193
194 switch (arizona->rev) {
195 case 0:
196 case 1:
197 ctrlif_error = false;
198 break;
199 default:
200 break;
201 }
202 break;
203#endif
204 default:
205 BUG_ON("Unknown Arizona class device" == NULL);
206 return -EINVAL;
207 }
208
209 if (arizona->pdata.irq_active_high) {
210 ret = regmap_update_bits(arizona->regmap, ARIZONA_IRQ_CTRL_1,
211 ARIZONA_IRQ_POL, 0);
212 if (ret != 0) {
213 dev_err(arizona->dev, "Couldn't set IRQ polarity: %d\n",
214 ret);
215 goto err;
216 }
217
218 flags |= IRQF_TRIGGER_HIGH;
219 } else {
220 flags |= IRQF_TRIGGER_LOW;
221 }
222
223
224 arizona->virq = irq_domain_add_linear(NULL, 2, &arizona_domain_ops,
225 arizona);
226 if (!arizona->virq) {
227 ret = -EINVAL;
228 goto err;
229 }
230
231 ret = regmap_add_irq_chip(arizona->regmap,
232 irq_create_mapping(arizona->virq, 0),
233 IRQF_ONESHOT, -1, aod,
234 &arizona->aod_irq_chip);
235 if (ret != 0) {
236 dev_err(arizona->dev, "Failed to add AOD IRQs: %d\n", ret);
237 goto err_domain;
238 }
239
240 ret = regmap_add_irq_chip(arizona->regmap,
241 irq_create_mapping(arizona->virq, 1),
242 IRQF_ONESHOT, -1, irq,
243 &arizona->irq_chip);
244 if (ret != 0) {
245 dev_err(arizona->dev, "Failed to add AOD IRQs: %d\n", ret);
246 goto err_aod;
247 }
248
249
250 i = arizona_map_irq(arizona, ARIZONA_IRQ_BOOT_DONE);
251 ret = request_threaded_irq(i, NULL, arizona_boot_done, IRQF_ONESHOT,
252 "Boot done", arizona);
253 if (ret != 0) {
254 dev_err(arizona->dev, "Failed to request boot done %d: %d\n",
255 arizona->irq, ret);
256 goto err_boot_done;
257 }
258
259
260 if (ctrlif_error) {
261 i = arizona_map_irq(arizona, ARIZONA_IRQ_CTRLIF_ERR);
262 ret = request_threaded_irq(i, NULL, arizona_ctrlif_err,
263 IRQF_ONESHOT,
264 "Control interface error", arizona);
265 if (ret != 0) {
266 dev_err(arizona->dev,
267 "Failed to request CTRLIF_ERR %d: %d\n",
268 arizona->irq, ret);
269 goto err_ctrlif;
270 }
271 }
272
273 ret = request_threaded_irq(arizona->irq, NULL, arizona_irq_thread,
274 flags, "arizona", arizona);
275
276 if (ret != 0) {
277 dev_err(arizona->dev, "Failed to request IRQ %d: %d\n",
278 arizona->irq, ret);
279 goto err_main_irq;
280 }
281
282 return 0;
283
284err_main_irq:
285 free_irq(arizona_map_irq(arizona, ARIZONA_IRQ_CTRLIF_ERR), arizona);
286err_ctrlif:
287 free_irq(arizona_map_irq(arizona, ARIZONA_IRQ_BOOT_DONE), arizona);
288err_boot_done:
289 regmap_del_irq_chip(irq_create_mapping(arizona->virq, 1),
290 arizona->irq_chip);
291err_aod:
292 regmap_del_irq_chip(irq_create_mapping(arizona->virq, 0),
293 arizona->aod_irq_chip);
294err_domain:
295err:
296 return ret;
297}
298
299int arizona_irq_exit(struct arizona *arizona)
300{
301 free_irq(arizona_map_irq(arizona, ARIZONA_IRQ_CTRLIF_ERR), arizona);
302 free_irq(arizona_map_irq(arizona, ARIZONA_IRQ_BOOT_DONE), arizona);
303 regmap_del_irq_chip(irq_create_mapping(arizona->virq, 1),
304 arizona->irq_chip);
305 regmap_del_irq_chip(irq_create_mapping(arizona->virq, 0),
306 arizona->aod_irq_chip);
307 free_irq(arizona->irq, arizona);
308
309 return 0;
310}
311
