Lines Matching +full:pm8921 +full:- +full:rtc
1 // SPDX-License-Identifier: GPL-2.0-only
2 /* Copyright (c) 2010-2011, Code Aurora Forum. All rights reserved.
7 #include <linux/rtc.h>
14 /* RTC Register offsets from RTC CTRL REG */
28 * struct pm8xxx_rtc_regs - describe RTC registers per PMIC versions
34 * @alarm_rw: base address of alarm read-write register
48 * struct pm8xxx_rtc - rtc driver internal structure
49 * @rtc: rtc device for this driver.
50 * @regmap: regmap used to access RTC registers
51 * @allow_set_time: indicates whether writing to the RTC is allowed
52 * @rtc_alarm_irq: rtc alarm irq number.
53 * @regs: rtc registers description.
58 struct rtc_device *rtc; member
68 * Steps to write the RTC registers.
70 * 2. Disable rtc if enabled.
73 * 5. Enable rtc if disabled in step 2.
83 const struct pm8xxx_rtc_regs *regs = rtc_dd->regs; in pm8xxx_rtc_set_time()
85 if (!rtc_dd->allow_set_time) in pm8xxx_rtc_set_time()
86 return -EACCES; in pm8xxx_rtc_set_time()
90 dev_dbg(dev, "Seconds value to be written to RTC = %lu\n", secs); in pm8xxx_rtc_set_time()
97 spin_lock_irqsave(&rtc_dd->ctrl_reg_lock, irq_flags); in pm8xxx_rtc_set_time()
99 rc = regmap_read(rtc_dd->regmap, regs->alarm_ctrl, &ctrl_reg); in pm8xxx_rtc_set_time()
103 if (ctrl_reg & regs->alarm_en) { in pm8xxx_rtc_set_time()
105 ctrl_reg &= ~regs->alarm_en; in pm8xxx_rtc_set_time()
106 rc = regmap_write(rtc_dd->regmap, regs->alarm_ctrl, ctrl_reg); in pm8xxx_rtc_set_time()
108 dev_err(dev, "Write to RTC Alarm control register failed\n"); in pm8xxx_rtc_set_time()
113 /* Disable RTC H/w before writing on RTC register */ in pm8xxx_rtc_set_time()
114 rc = regmap_read(rtc_dd->regmap, regs->ctrl, &rtc_ctrl_reg); in pm8xxx_rtc_set_time()
121 rc = regmap_write(rtc_dd->regmap, regs->ctrl, rtc_ctrl_reg); in pm8xxx_rtc_set_time()
123 dev_err(dev, "Write to RTC control register failed\n"); in pm8xxx_rtc_set_time()
129 rc = regmap_write(rtc_dd->regmap, regs->write, 0); in pm8xxx_rtc_set_time()
131 dev_err(dev, "Write to RTC write data register failed\n"); in pm8xxx_rtc_set_time()
136 rc = regmap_bulk_write(rtc_dd->regmap, regs->write + 1, in pm8xxx_rtc_set_time()
137 &value[1], sizeof(value) - 1); in pm8xxx_rtc_set_time()
139 dev_err(dev, "Write to RTC write data register failed\n"); in pm8xxx_rtc_set_time()
144 rc = regmap_write(rtc_dd->regmap, regs->write, value[0]); in pm8xxx_rtc_set_time()
146 dev_err(dev, "Write to RTC write data register failed\n"); in pm8xxx_rtc_set_time()
150 /* Enable RTC H/w after writing on RTC register */ in pm8xxx_rtc_set_time()
153 rc = regmap_write(rtc_dd->regmap, regs->ctrl, rtc_ctrl_reg); in pm8xxx_rtc_set_time()
155 dev_err(dev, "Write to RTC control register failed\n"); in pm8xxx_rtc_set_time()
161 ctrl_reg |= regs->alarm_en; in pm8xxx_rtc_set_time()
162 rc = regmap_write(rtc_dd->regmap, regs->alarm_ctrl, ctrl_reg); in pm8xxx_rtc_set_time()
164 dev_err(dev, "Write to RTC Alarm control register failed\n"); in pm8xxx_rtc_set_time()
170 spin_unlock_irqrestore(&rtc_dd->ctrl_reg_lock, irq_flags); in pm8xxx_rtc_set_time()
182 const struct pm8xxx_rtc_regs *regs = rtc_dd->regs; in pm8xxx_rtc_read_time()
184 rc = regmap_bulk_read(rtc_dd->regmap, regs->read, value, sizeof(value)); in pm8xxx_rtc_read_time()
186 dev_err(dev, "RTC read data register failed\n"); in pm8xxx_rtc_read_time()
194 rc = regmap_read(rtc_dd->regmap, regs->read, ®); in pm8xxx_rtc_read_time()
196 dev_err(dev, "RTC read data register failed\n"); in pm8xxx_rtc_read_time()
201 rc = regmap_bulk_read(rtc_dd->regmap, regs->read, in pm8xxx_rtc_read_time()
204 dev_err(dev, "RTC read data register failed\n"); in pm8xxx_rtc_read_time()
214 dev_dbg(dev, "secs = %lu, h:m:s == %ptRt, y-m-d = %ptRdr\n", secs, tm, tm); in pm8xxx_rtc_read_time()
226 const struct pm8xxx_rtc_regs *regs = rtc_dd->regs; in pm8xxx_rtc_set_alarm()
228 secs = rtc_tm_to_time64(&alarm->time); in pm8xxx_rtc_set_alarm()
235 spin_lock_irqsave(&rtc_dd->ctrl_reg_lock, irq_flags); in pm8xxx_rtc_set_alarm()
237 rc = regmap_bulk_write(rtc_dd->regmap, regs->alarm_rw, value, in pm8xxx_rtc_set_alarm()
240 dev_err(dev, "Write to RTC ALARM register failed\n"); in pm8xxx_rtc_set_alarm()
244 rc = regmap_read(rtc_dd->regmap, regs->alarm_ctrl, &ctrl_reg); in pm8xxx_rtc_set_alarm()
248 if (alarm->enabled) in pm8xxx_rtc_set_alarm()
249 ctrl_reg |= regs->alarm_en; in pm8xxx_rtc_set_alarm()
251 ctrl_reg &= ~regs->alarm_en; in pm8xxx_rtc_set_alarm()
253 rc = regmap_write(rtc_dd->regmap, regs->alarm_ctrl, ctrl_reg); in pm8xxx_rtc_set_alarm()
255 dev_err(dev, "Write to RTC alarm control register failed\n"); in pm8xxx_rtc_set_alarm()
259 dev_dbg(dev, "Alarm Set for h:m:s=%ptRt, y-m-d=%ptRdr\n", in pm8xxx_rtc_set_alarm()
260 &alarm->time, &alarm->time); in pm8xxx_rtc_set_alarm()
262 spin_unlock_irqrestore(&rtc_dd->ctrl_reg_lock, irq_flags); in pm8xxx_rtc_set_alarm()
273 const struct pm8xxx_rtc_regs *regs = rtc_dd->regs; in pm8xxx_rtc_read_alarm()
275 rc = regmap_bulk_read(rtc_dd->regmap, regs->alarm_rw, value, in pm8xxx_rtc_read_alarm()
278 dev_err(dev, "RTC alarm time read failed\n"); in pm8xxx_rtc_read_alarm()
285 rtc_time64_to_tm(secs, &alarm->time); in pm8xxx_rtc_read_alarm()
287 rc = regmap_read(rtc_dd->regmap, regs->alarm_ctrl, &ctrl_reg); in pm8xxx_rtc_read_alarm()
289 dev_err(dev, "Read from RTC alarm control register failed\n"); in pm8xxx_rtc_read_alarm()
292 alarm->enabled = !!(ctrl_reg & PM8xxx_RTC_ALARM_ENABLE); in pm8xxx_rtc_read_alarm()
294 dev_dbg(dev, "Alarm set for - h:m:s=%ptRt, y-m-d=%ptRdr\n", in pm8xxx_rtc_read_alarm()
295 &alarm->time, &alarm->time); in pm8xxx_rtc_read_alarm()
305 const struct pm8xxx_rtc_regs *regs = rtc_dd->regs; in pm8xxx_rtc_alarm_irq_enable()
309 spin_lock_irqsave(&rtc_dd->ctrl_reg_lock, irq_flags); in pm8xxx_rtc_alarm_irq_enable()
311 rc = regmap_read(rtc_dd->regmap, regs->alarm_ctrl, &ctrl_reg); in pm8xxx_rtc_alarm_irq_enable()
316 ctrl_reg |= regs->alarm_en; in pm8xxx_rtc_alarm_irq_enable()
318 ctrl_reg &= ~regs->alarm_en; in pm8xxx_rtc_alarm_irq_enable()
320 rc = regmap_write(rtc_dd->regmap, regs->alarm_ctrl, ctrl_reg); in pm8xxx_rtc_alarm_irq_enable()
322 dev_err(dev, "Write to RTC control register failed\n"); in pm8xxx_rtc_alarm_irq_enable()
328 rc = regmap_bulk_write(rtc_dd->regmap, regs->alarm_rw, value, in pm8xxx_rtc_alarm_irq_enable()
331 dev_err(dev, "Clear RTC ALARM register failed\n"); in pm8xxx_rtc_alarm_irq_enable()
337 spin_unlock_irqrestore(&rtc_dd->ctrl_reg_lock, irq_flags); in pm8xxx_rtc_alarm_irq_enable()
352 const struct pm8xxx_rtc_regs *regs = rtc_dd->regs; in pm8xxx_alarm_trigger()
356 rtc_update_irq(rtc_dd->rtc, 1, RTC_IRQF | RTC_AF); in pm8xxx_alarm_trigger()
358 spin_lock(&rtc_dd->ctrl_reg_lock); in pm8xxx_alarm_trigger()
361 rc = regmap_read(rtc_dd->regmap, regs->alarm_ctrl, &ctrl_reg); in pm8xxx_alarm_trigger()
363 spin_unlock(&rtc_dd->ctrl_reg_lock); in pm8xxx_alarm_trigger()
367 ctrl_reg &= ~regs->alarm_en; in pm8xxx_alarm_trigger()
369 rc = regmap_write(rtc_dd->regmap, regs->alarm_ctrl, ctrl_reg); in pm8xxx_alarm_trigger()
371 spin_unlock(&rtc_dd->ctrl_reg_lock); in pm8xxx_alarm_trigger()
372 dev_err(rtc_dd->rtc_dev, in pm8xxx_alarm_trigger()
377 spin_unlock(&rtc_dd->ctrl_reg_lock); in pm8xxx_alarm_trigger()
379 /* Clear RTC alarm register */ in pm8xxx_alarm_trigger()
380 rc = regmap_read(rtc_dd->regmap, regs->alarm_ctrl2, &ctrl_reg); in pm8xxx_alarm_trigger()
382 dev_err(rtc_dd->rtc_dev, in pm8xxx_alarm_trigger()
383 "RTC Alarm control2 register read failed\n"); in pm8xxx_alarm_trigger()
388 rc = regmap_write(rtc_dd->regmap, regs->alarm_ctrl2, ctrl_reg); in pm8xxx_alarm_trigger()
390 dev_err(rtc_dd->rtc_dev, in pm8xxx_alarm_trigger()
391 "Write to RTC Alarm control2 register failed\n"); in pm8xxx_alarm_trigger()
399 const struct pm8xxx_rtc_regs *regs = rtc_dd->regs; in pm8xxx_rtc_enable()
403 /* Check if the RTC is on, else turn it on */ in pm8xxx_rtc_enable()
404 rc = regmap_read(rtc_dd->regmap, regs->ctrl, &ctrl_reg); in pm8xxx_rtc_enable()
410 rc = regmap_write(rtc_dd->regmap, regs->ctrl, ctrl_reg); in pm8xxx_rtc_enable()
459 * Hardcoded RTC bases until IORESOURCE_REG mapping is figured out
462 { .compatible = "qcom,pm8921-rtc", .data = &pm8921_regs },
463 { .compatible = "qcom,pm8018-rtc", .data = &pm8921_regs },
464 { .compatible = "qcom,pm8058-rtc", .data = &pm8058_regs },
465 { .compatible = "qcom,pm8941-rtc", .data = &pm8941_regs },
466 { .compatible = "qcom,pmk8350-rtc", .data = &pmk8350_regs },
477 match = of_match_node(pm8xxx_id_table, pdev->dev.of_node); in pm8xxx_rtc_probe()
479 return -ENXIO; in pm8xxx_rtc_probe()
481 rtc_dd = devm_kzalloc(&pdev->dev, sizeof(*rtc_dd), GFP_KERNEL); in pm8xxx_rtc_probe()
483 return -ENOMEM; in pm8xxx_rtc_probe()
485 /* Initialise spinlock to protect RTC control register */ in pm8xxx_rtc_probe()
486 spin_lock_init(&rtc_dd->ctrl_reg_lock); in pm8xxx_rtc_probe()
488 rtc_dd->regmap = dev_get_regmap(pdev->dev.parent, NULL); in pm8xxx_rtc_probe()
489 if (!rtc_dd->regmap) { in pm8xxx_rtc_probe()
490 dev_err(&pdev->dev, "Parent regmap unavailable.\n"); in pm8xxx_rtc_probe()
491 return -ENXIO; in pm8xxx_rtc_probe()
494 rtc_dd->rtc_alarm_irq = platform_get_irq(pdev, 0); in pm8xxx_rtc_probe()
495 if (rtc_dd->rtc_alarm_irq < 0) in pm8xxx_rtc_probe()
496 return -ENXIO; in pm8xxx_rtc_probe()
498 rtc_dd->allow_set_time = of_property_read_bool(pdev->dev.of_node, in pm8xxx_rtc_probe()
499 "allow-set-time"); in pm8xxx_rtc_probe()
501 rtc_dd->regs = match->data; in pm8xxx_rtc_probe()
502 rtc_dd->rtc_dev = &pdev->dev; in pm8xxx_rtc_probe()
510 device_init_wakeup(&pdev->dev, 1); in pm8xxx_rtc_probe()
512 /* Register the RTC device */ in pm8xxx_rtc_probe()
513 rtc_dd->rtc = devm_rtc_allocate_device(&pdev->dev); in pm8xxx_rtc_probe()
514 if (IS_ERR(rtc_dd->rtc)) in pm8xxx_rtc_probe()
515 return PTR_ERR(rtc_dd->rtc); in pm8xxx_rtc_probe()
517 rtc_dd->rtc->ops = &pm8xxx_rtc_ops; in pm8xxx_rtc_probe()
518 rtc_dd->rtc->range_max = U32_MAX; in pm8xxx_rtc_probe()
521 rc = devm_request_any_context_irq(&pdev->dev, rtc_dd->rtc_alarm_irq, in pm8xxx_rtc_probe()
526 dev_err(&pdev->dev, "Request IRQ failed (%d)\n", rc); in pm8xxx_rtc_probe()
530 return devm_rtc_register_device(rtc_dd->rtc); in pm8xxx_rtc_probe()
539 disable_irq_wake(rtc_dd->rtc_alarm_irq); in pm8xxx_rtc_resume()
549 enable_irq_wake(rtc_dd->rtc_alarm_irq); in pm8xxx_rtc_suspend()
562 .name = "rtc-pm8xxx",
570 MODULE_ALIAS("platform:rtc-pm8xxx");
571 MODULE_DESCRIPTION("PMIC8xxx RTC driver");