1 #define pr_fmt(x) KBUILD_MODNAME ": " x "\n"
2
3 #include <linux/kernel.h>
4 #include <linux/module.h>
5 #include <linux/init.h>
6 #include <linux/slab.h>
7 #include <linux/interrupt.h>
8 #include <linux/device.h>
9 #include <linux/mutex.h>
10 #include <linux/param.h>
11 #include <linux/jiffies.h>
12 #include <linux/platform_device.h>
13 #include <linux/power_supply.h>
14 #include <linux/fs.h>
15 #include <linux/ktime.h>
16 #include <linux/of.h>
17 #include <linux/timekeeping.h>
18 #include <linux/types.h>
19 #include <linux/string.h>
20 #include <asm/irq.h>
21 #include <linux/cdev.h>
22 #include <linux/delay.h>
23 #include <linux/pm_runtime.h>
24 #include <linux/gpio/consumer.h>
25 #include <linux/kthread.h>
26 #include <linux/freezer.h>
27 #include <linux/err.h>
28 #include "power/axp2101.h"
29 #include "axp803_charger.h"
30
31 struct axp803_ac_power {
32 char *name;
33 struct device *dev;
34 struct axp_config_info dts_info;
35 struct regmap *regmap;
36 struct power_supply *ac_supply;
37 struct delayed_work ac_supply_mon;
38 };
39
axp803_ac_set_vhold(struct axp803_ac_power * ac_power,int vol)40 static int axp803_ac_set_vhold(struct axp803_ac_power *ac_power, int vol)
41 {
42 unsigned int tmp;
43 struct regmap *map = ac_power->regmap;
44
45 if (vol) {
46 regmap_update_bits(map, AXP803_CHARGE_AC_SET, 0x40, 0x40);
47 if (vol >= 4000 && vol <= 4700) {
48 tmp = (vol - 4000)/100;
49 regmap_update_bits(map, AXP803_CHARGE_AC_SET,
50 0x7 << 3, tmp << 3);
51 } else {
52 pr_err("set ac limit voltage error, %d mV\n", vol);
53 }
54 } else {
55 regmap_update_bits(map, AXP803_CHARGE_AC_SET, 0x40, 0x00);
56 }
57
58 return 0;
59 }
60
axp803_ac_set_ihold(struct axp803_ac_power * ac_power,int cur)61 static int axp803_ac_set_ihold(struct axp803_ac_power *ac_power, int cur)
62 {
63 unsigned int tmp;
64 struct regmap *map = ac_power->regmap;
65
66 if (cur) {
67 if (cur >= 1500 && cur <= 4000) {
68 tmp = (cur - 1500) / 500;
69 regmap_update_bits(map, AXP803_CHARGE_AC_SET, 0x7, tmp);
70 } else {
71 pr_err("set ac limit current error, %d mA\n", cur);
72 }
73 } else {
74 regmap_update_bits(map, AXP803_CHARGE_AC_SET, 0x40, 0x40);
75 }
76
77 return 0;
78 }
79
80 static enum power_supply_property axp803_ac_props[] = {
81 POWER_SUPPLY_PROP_MODEL_NAME,
82 POWER_SUPPLY_PROP_PRESENT,
83 POWER_SUPPLY_PROP_ONLINE,
84 };
85
axp803_ac_get_property(struct power_supply * psy,enum power_supply_property psp,union power_supply_propval * val)86 static int axp803_ac_get_property(struct power_supply *psy,
87 enum power_supply_property psp,
88 union power_supply_propval *val)
89 {
90 int ret = 0;
91 unsigned int reg_value;
92 struct axp803_ac_power *ac_power = power_supply_get_drvdata(psy);
93
94 switch (psp) {
95 case POWER_SUPPLY_PROP_MODEL_NAME:
96 val->strval = psy->desc->name;
97 break;
98 case POWER_SUPPLY_PROP_PRESENT:
99 ret = regmap_read(ac_power->regmap, AXP803_STATUS, ®_value);
100 if (ret)
101 return ret;
102 val->intval = !!(reg_value & AXP803_STATUS_AC_PRESENT);
103 break;
104 case POWER_SUPPLY_PROP_ONLINE:
105 ret = regmap_read(ac_power->regmap, AXP803_STATUS, ®_value);
106 if (ret)
107 return ret;
108 val->intval = !!(reg_value & AXP803_STATUS_AC_USED);
109 break;
110 default:
111 ret = -EINVAL;
112 break;
113 }
114
115 return ret;
116 }
117
118 static const struct power_supply_desc axp803_ac_desc = {
119 .name = "axp803-ac",
120 .type = POWER_SUPPLY_TYPE_MAINS,
121 .get_property = axp803_ac_get_property,
122 .properties = axp803_ac_props,
123 .num_properties = ARRAY_SIZE(axp803_ac_props),
124 };
125
axp803_ac_power_init(struct axp803_ac_power * ac_power)126 static int axp803_ac_power_init(struct axp803_ac_power *ac_power)
127 {
128 struct axp_config_info *axp_config = &ac_power->dts_info;
129
130 axp803_ac_set_vhold(ac_power, axp_config->pmu_ac_vol);
131 axp803_ac_set_ihold(ac_power, axp_config->pmu_ac_cur);
132 return 0;
133 }
134
axp803_ac_power_irq(int irq,void * data)135 static irqreturn_t axp803_ac_power_irq(int irq, void *data)
136 {
137 struct axp803_ac_power *ac_power = data;
138
139 power_supply_changed(ac_power->ac_supply);
140
141 return IRQ_HANDLED;
142 }
143
144 enum axp803_ac_power_virqs {
145 AXP803_VIRQ_ACIN,
146 AXP803_VIRQ_ACRE,
147
148 AXP803_AC_VIRQ_MAX_VIRQ,
149 };
150
151 static struct axp_interrupts axp803_ac_irq[] = {
152 [AXP803_VIRQ_ACIN] = {"ac in", axp803_ac_power_irq},
153 [AXP803_VIRQ_ACRE] = {"ac out", axp803_ac_power_irq},
154 };
155
axp803_ac_power_monitor(struct work_struct * work)156 static void axp803_ac_power_monitor(struct work_struct *work)
157 {
158 struct axp803_ac_power *ac_power =
159 container_of(work, typeof(*ac_power), ac_supply_mon.work);
160
161 schedule_delayed_work(&ac_power->ac_supply_mon, msecs_to_jiffies(500));
162 }
163
axp803_ac_power_dt_parse(struct axp803_ac_power * ac_power)164 static int axp803_ac_power_dt_parse(struct axp803_ac_power *ac_power)
165 {
166 struct axp_config_info *axp_config = &ac_power->dts_info;
167 struct device_node *node = ac_power->dev->of_node;
168
169 if (!of_device_is_available(node)) {
170 pr_err("%s: failed\n", __func__);
171 return -1;
172 }
173
174 AXP_OF_PROP_READ(pmu_ac_vol, 4400);
175 AXP_OF_PROP_READ(pmu_ac_cur, 0);
176
177 axp_config->wakeup_ac_in =
178 of_property_read_bool(node, "wakeup_ac_in");
179 axp_config->wakeup_ac_out =
180 of_property_read_bool(node, "wakeup_ac_out");
181
182 return 0;
183 }
184
axp803_ac_power_probe(struct platform_device * pdev)185 static int axp803_ac_power_probe(struct platform_device *pdev)
186 {
187 struct axp20x_dev *axp_dev = dev_get_drvdata(pdev->dev.parent);
188 struct power_supply_config psy_cfg = {};
189 struct axp803_ac_power *ac_power;
190 int i, irq;
191 int ret = 0;
192
193 if (!axp_dev->irq) {
194 pr_err("can not register axp803 ac without irq\n");
195 return -EINVAL;
196 }
197
198 ac_power = devm_kzalloc(&pdev->dev, sizeof(*ac_power), GFP_KERNEL);
199 if (!ac_power) {
200 pr_err("axp803 ac power alloc failed\n");
201 ret = -ENOMEM;
202 return ret;
203 }
204
205 ac_power->name = "axp803-ac-power";
206 ac_power->dev = &pdev->dev;
207 ac_power->regmap = axp_dev->regmap;
208
209 platform_set_drvdata(pdev, ac_power);
210
211 ret = axp803_ac_power_dt_parse(ac_power);
212 if (ret) {
213 pr_err("%s parse device tree err\n", __func__);
214 ret = -EINVAL;
215 return ret;
216 }
217
218 ret = axp803_ac_power_init(ac_power);
219 if (ret < 0) {
220 pr_err("axp210x init chip fail!\n");
221 ret = -ENODEV;
222 return ret;
223 }
224
225 psy_cfg.of_node = pdev->dev.of_node;
226 psy_cfg.drv_data = ac_power;
227
228 ac_power->ac_supply = devm_power_supply_register(ac_power->dev,
229 &axp803_ac_desc, &psy_cfg);
230
231 if (IS_ERR(ac_power->ac_supply)) {
232 pr_err("axp803 failed to register ac power\n");
233 ret = PTR_ERR(ac_power->ac_supply);
234 return ret;
235 }
236
237 for (i = 0; i < ARRAY_SIZE(axp803_ac_irq); i++) {
238 irq = platform_get_irq_byname(pdev, axp803_ac_irq[i].name);
239 if (irq < 0) {
240 dev_warn(&pdev->dev, "No IRQ for %s: %d\n",
241 axp803_ac_irq[i].name, irq);
242 continue;
243 }
244 irq = regmap_irq_get_virq(axp_dev->regmap_irqc, irq);
245 ret = devm_request_any_context_irq(&pdev->dev, irq,
246 axp803_ac_irq[i].isr, 0,
247 axp803_ac_irq[i].name, ac_power);
248 if (ret < 0)
249 dev_warn(&pdev->dev, "Error requesting %s IRQ %d: %d\n",
250 axp803_ac_irq[i].name, irq, ret);
251
252 dev_dbg(&pdev->dev, "Requested %s IRQ %d: %d\n",
253 axp803_ac_irq[i].name, irq, ret);
254
255 /* we use this variable to suspend irq */
256 axp803_ac_irq[i].irq = irq;
257 }
258
259
260 INIT_DELAYED_WORK(&ac_power->ac_supply_mon, axp803_ac_power_monitor);
261 schedule_delayed_work(&ac_power->ac_supply_mon, msecs_to_jiffies(500));
262
263 return 0;
264 }
265
axp803_ac_power_remove(struct platform_device * pdev)266 static int axp803_ac_power_remove(struct platform_device *pdev)
267 {
268 struct axp803_ac_power *ac_power = platform_get_drvdata(pdev);
269
270 cancel_delayed_work_sync(&ac_power->ac_supply_mon);
271
272 return 0;
273 }
274
axp_irq_set(unsigned int irq,bool enable)275 static inline void axp_irq_set(unsigned int irq, bool enable)
276 {
277 if (enable)
278 enable_irq(irq);
279 else
280 disable_irq(irq);
281 }
282
axp803_ac_virq_dts_set(struct axp803_ac_power * ac_power,bool enable)283 static void axp803_ac_virq_dts_set(struct axp803_ac_power *ac_power, bool enable)
284 {
285 struct axp_config_info *dts_info = &ac_power->dts_info;
286
287 if (!dts_info->wakeup_usb_in)
288 axp_irq_set(axp803_ac_irq[AXP803_VIRQ_ACIN].irq,
289 enable);
290 if (!dts_info->wakeup_usb_out)
291 axp_irq_set(axp803_ac_irq[AXP803_VIRQ_ACRE].irq,
292 enable);
293 }
294
axp803_ac_power_suspend(struct platform_device * pdev,pm_message_t state)295 static int axp803_ac_power_suspend(struct platform_device *pdev, pm_message_t state)
296 {
297 struct axp803_ac_power *ac_power = platform_get_drvdata(pdev);
298
299 axp803_ac_virq_dts_set(ac_power, false);
300
301 return 0;
302 }
303
axp803_ac_power_resume(struct platform_device * pdev)304 static int axp803_ac_power_resume(struct platform_device *pdev)
305 {
306 struct axp803_ac_power *ac_power = platform_get_drvdata(pdev);
307
308 axp803_ac_virq_dts_set(ac_power, true);
309
310 return 0;
311 }
312
313 static const struct of_device_id axp803_ac_power_match[] = {
314 {
315 .compatible = "x-powers,axp803-ac-power-supply",
316 .data = (void *)AXP803_ID,
317 }, { /* sentinel */ }
318 };
319 MODULE_DEVICE_TABLE(of, axp803_ac_power_match);
320
321 static struct platform_driver axp803_ac_power_driver = {
322 .driver = {
323 .name = "axp803-ac-power-supply",
324 .of_match_table = axp803_ac_power_match,
325 },
326 .probe = axp803_ac_power_probe,
327 .remove = axp803_ac_power_remove,
328 .suspend = axp803_ac_power_suspend,
329 .resume = axp803_ac_power_resume,
330 };
331
332 module_platform_driver(axp803_ac_power_driver);
333
334 MODULE_AUTHOR("wangxiaoliang <wangxiaoliang@x-powers.com>");
335 MODULE_DESCRIPTION("axp803 ac power driver");
336 MODULE_LICENSE("GPL");
337