Commit de554096 authored by Linus Torvalds's avatar Linus Torvalds
Browse files

Merge tag 'rtc-5.14' of git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux

Pull RTC updates from Alexandre Belloni:
 "Mostly documentation/comment changes and non urgent fixes.

   - add or fix SPDX identifiers

   - NXP pcf*: fix datasheet URLs

   - imxdi: add wakeup support

   - pcf2127: handle timestamp interrupts, this fixes a possible
     interrupt storm

   - bd70528: Drop BD70528 support"

* tag 'rtc-5.14' of git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux: (33 commits)
  rtc: pcf8523: rename register and bit defines
  rtc: pcf2127: handle timestamp interrupts
  rtc: at91sam9: Remove unnecessary offset variable checks
  rtc: s5m: Check return value of s5m_check_peding_alarm_interrupt()
  rtc: spear: convert to SPDX identifier
  rtc: tps6586x: convert to SPDX identifier
  rtc: tps80031: convert to SPDX identifier
  rtc: rtd119x: Fix format of SPDX identifier
  rtc: sc27xx: Fix format of SPDX identifier
  rtc: palmas: convert to SPDX identifier
  rtc: max6900: convert to SPDX identifier
  rtc: ds1374: convert to SPDX identifier
  rtc: au1xxx: convert to SPDX identifier
  rtc: pcf85063: Update the PCF85063A datasheet revision
  dt-bindings: rtc: ti,bq32k: take maintainership
  rtc: pcf8563: Fix the datasheet URL
  rtc: pcf85063: Fix the datasheet URL
  rtc: pcf2127: Fix the datasheet URL
  dt-bindings: rtc: ti,bq32k: Convert to json-schema
  dt-bindings: rtc: rx8900: Convert to YAML schema
  ...
parents 6bce2443 4aa90c03
Real Time Clock driver for:
- Epson RX8900
- Micro Crystal rv8803
Required properties:
- compatible: should be: "microcrystal,rv8803" or "epson,rx8900"
- reg : the I2C address of the device for I2C
Optional properties:
- epson,vdet-disable : boolean, if present will disable voltage detector.
Should be set if no backup battery is used.
- trickle-diode-disable : boolean, if present will disable internal trickle
charger diode
Example:
rtc: rtc@32 {
compatible = "epson,rx8900"
reg = <0x32>;
epson,vdet-disable;
trickle-diode-disable;
};
# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/rtc/epson,rx8900.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: EPSON RX8900 / Microcrystal RV8803 Real-Time Clock DT bindings
maintainers:
- Marek Vasut <marex@denx.de>
allOf:
- $ref: rtc.yaml#
properties:
compatible:
enum:
- epson,rx8900
- microcrystal,rv8803
reg:
maxItems: 1
epson,vdet-disable:
type: boolean
description: |
Disable voltage detector. Should be set if no backup battery is used.
trickle-diode-disable: true
required:
- compatible
- reg
additionalProperties: false
examples:
- |
i2c {
#address-cells = <1>;
#size-cells = <0>;
rtc@32 {
compatible = "epson,rx8900";
reg = <0x32>;
epson,vdet-disable;
trickle-diode-disable;
};
};
* Faraday Technology FTRTC010 Real Time Clock
This RTC appears in for example the Storlink Gemini family of
SoCs.
Required properties:
- compatible : Should be one of:
"faraday,ftrtc010"
"cortina,gemini-rtc", "faraday,ftrtc010"
Optional properties:
- clocks: when present should contain clock references to the
PCLK and EXTCLK clocks. Faraday calls the later CLK1HZ and
says the clock should be 1 Hz, but implementers actually seem
to choose different clocks here, like Cortina who chose
32768 Hz (a typical low-power clock).
- clock-names: should name the clocks "PCLK" and "EXTCLK"
respectively.
Examples:
rtc@45000000 {
compatible = "cortina,gemini-rtc";
reg = <0x45000000 0x100>;
interrupts = <17 IRQ_TYPE_LEVEL_HIGH>;
clocks = <&foo 0>, <&foo 1>;
clock-names = "PCLK", "EXTCLK";
};
# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/rtc/faraday,ftrtc010.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: Faraday Technology FTRTC010 Real Time Clock
maintainers:
- Linus Walleij <linus.walleij@linaro.org>
description: |
This RTC appears in for example the Storlink Gemini family of SoCs.
properties:
compatible:
oneOf:
- const: faraday,ftrtc010
- items:
- const: cortina,gemini-rtc
- const: faraday,ftrtc010
resets:
maxItems: 1
reg:
maxItems: 1
interrupts:
maxItems: 1
clocks:
minItems: 2
items:
- description: PCLK clocks
- description: EXTCLK clocks. Faraday calls it CLK1HZ and says the clock
should be 1 Hz, but implementers actually seem to choose different
clocks here, like Cortina who chose 32768 Hz (a typical low-power clock).
clock-names:
items:
- const: "PCLK"
- const: "EXTCLK"
required:
- compatible
additionalProperties: false
examples:
- |
#include <dt-bindings/interrupt-controller/irq.h>
rtc@45000000 {
compatible = "cortina,gemini-rtc", "faraday,ftrtc010";
reg = <0x45000000 0x100>;
interrupts = <17 IRQ_TYPE_LEVEL_HIGH>;
clocks = <&foo 0>, <&foo 1>;
clock-names = "PCLK", "EXTCLK";
};
......@@ -21,10 +21,19 @@ Optional properties:
clock name
- wakeup-source: Enables wake up of host system on alarm
Optional child node:
- clock: Provide this if the square wave pin is used as boot-enabled fixed clock.
Example:
rtc@68 {
compatible = "st,m41t80";
reg = <0x68>;
interrupt-parent = <&UIC0>;
interrupts = <0x9 0x8>;
clock {
compatible = "fixed-clock";
#clock-cells = <0>;
clock-frequency = <32768>;
};
};
# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/rtc/ti,bq32000.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: TI BQ32000 I2C Serial Real-Time Clock
maintainers:
- Alexandre Belloni <alexandre.belloni@bootlin.com>
allOf:
- $ref: rtc.yaml#
properties:
compatible:
const: ti,bq32000
reg:
const: 0x68
interrupts:
maxItems: 1
start-year: true
trickle-resistor-ohms:
enum: [ 1120, 20180 ]
trickle-diode-disable: true
required:
- compatible
- reg
additionalProperties: false
examples:
- |
i2c {
#address-cells = <1>;
#size-cells = <0>;
bq32000: rtc@68 {
compatible = "ti,bq32000";
reg = <0x68>;
trickle-resistor-ohms = <1120>;
};
};
* TI BQ32000 I2C Serial Real-Time Clock
Required properties:
- compatible: Should contain "ti,bq32000".
- reg: I2C address for chip
Optional properties:
- trickle-resistor-ohms : Selected resistor for trickle charger
Values usable are 1120 and 20180
Should be given if trickle charger should be enabled
- trickle-diode-disable : Do not use internal trickle charger diode
Should be given if internal trickle charger diode should be disabled
Example:
bq32000: rtc@68 {
compatible = "ti,bq32000";
trickle-resistor-ohms = <1120>;
reg = <0x68>;
};
......@@ -501,11 +501,11 @@ config RTC_DRV_M41T80_WDT
watchdog timer in the ST M41T60 and M41T80 RTC chips series.
config RTC_DRV_BD70528
tristate "ROHM BD70528, BD71815 and BD71828 PMIC RTC"
depends on MFD_ROHM_BD71828 || MFD_ROHM_BD70528 && (BD70528_WATCHDOG || !BD70528_WATCHDOG)
tristate "ROHM BD71815 and BD71828 PMIC RTC"
depends on MFD_ROHM_BD71828
help
If you say Y here you will get support for the RTC
block on ROHM BD70528, BD71815 and BD71828 Power Management IC.
block on ROHM BD71815 and BD71828 Power Management IC.
This driver can also be built as a module. If so, the module
will be called rtc-bd70528.
......
......@@ -23,8 +23,8 @@ static bool is_rtc_hctosys(struct rtc_device *rtc)
int size;
char name[NAME_SIZE];
size = scnprintf(name, NAME_SIZE, "rtc%d", rtc->id);
if (size > NAME_SIZE)
size = snprintf(name, NAME_SIZE, "rtc%d", rtc->id);
if (size >= NAME_SIZE)
return false;
return !strncmp(name, CONFIG_RTC_HCTOSYS_DEVICE, NAME_SIZE);
......
......@@ -184,7 +184,7 @@ static int at91_rtc_readalarm(struct device *dev, struct rtc_wkalrm *alrm)
return -EILSEQ;
memset(alrm, 0, sizeof(*alrm));
if (alarm != ALARM_DISABLED && offset != 0) {
if (alarm != ALARM_DISABLED) {
rtc_time64_to_tm(offset + alarm, tm);
dev_dbg(dev, "%s: %ptR\n", __func__, tm);
......
// SPDX-License-Identifier: GPL-2.0-only
/*
* Au1xxx counter0 (aka Time-Of-Year counter) RTC interface driver.
*
* Copyright (C) 2008 Manuel Lauss <mano@roarinelk.homelinux.net>
*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*/
/* All current Au1xxx SoCs have 2 counters fed by an external 32.768 kHz
......
......@@ -2,10 +2,9 @@
//
// Copyright (C) 2018 ROHM Semiconductors
//
// RTC driver for ROHM BD70528 PMIC
// RTC driver for ROHM BD71828 and BD71815 PMIC
#include <linux/bcd.h>
#include <linux/mfd/rohm-bd70528.h>
#include <linux/mfd/rohm-bd71815.h>
#include <linux/mfd/rohm-bd71828.h>
#include <linux/module.h>
......@@ -39,11 +38,6 @@ struct bd70528_rtc_data {
u8 year;
} __packed;
struct bd70528_rtc_wake {
struct bd70528_rtc_day time;
u8 ctrl;
} __packed;
struct bd71828_rtc_alm {
struct bd70528_rtc_data alm0;
struct bd70528_rtc_data alm1;
......@@ -51,141 +45,14 @@ struct bd71828_rtc_alm {
u8 alm1_mask;
} __packed;
struct bd70528_rtc_alm {
struct bd70528_rtc_data data;
u8 alm_mask;
u8 alm_repeat;
} __packed;
struct bd70528_rtc {
struct rohm_regmap_dev *parent;
struct regmap *regmap;
struct device *dev;
u8 reg_time_start;
u8 bd718xx_alm_block_start;
bool has_rtc_timers;
};
static int bd70528_set_wake(struct rohm_regmap_dev *bd70528,
int enable, int *old_state)
{
int ret;
unsigned int ctrl_reg;
ret = regmap_read(bd70528->regmap, BD70528_REG_WAKE_EN, &ctrl_reg);
if (ret)
return ret;
if (old_state) {
if (ctrl_reg & BD70528_MASK_WAKE_EN)
*old_state |= BD70528_WAKE_STATE_BIT;
else
*old_state &= ~BD70528_WAKE_STATE_BIT;
if (!enable == !(*old_state & BD70528_WAKE_STATE_BIT))
return 0;
}
if (enable)
ctrl_reg |= BD70528_MASK_WAKE_EN;
else
ctrl_reg &= ~BD70528_MASK_WAKE_EN;
return regmap_write(bd70528->regmap, BD70528_REG_WAKE_EN,
ctrl_reg);
}
static int bd70528_set_elapsed_tmr(struct rohm_regmap_dev *bd70528,
int enable, int *old_state)
{
int ret;
unsigned int ctrl_reg;
/*
* TBD
* What is the purpose of elapsed timer ?
* Is the timeout registers counting down, or is the disable - re-enable
* going to restart the elapsed-time counting? If counting is restarted
* the timeout should be decreased by the amount of time that has
* elapsed since starting the timer. Maybe we should store the monotonic
* clock value when timer is started so that if RTC is set while timer
* is armed we could do the compensation. This is a hack if RTC/system
* clk are drifting. OTOH, RTC controlled via I2C is in any case
* inaccurate...
*/
ret = regmap_read(bd70528->regmap, BD70528_REG_ELAPSED_TIMER_EN,
&ctrl_reg);
if (ret)
return ret;
if (old_state) {
if (ctrl_reg & BD70528_MASK_ELAPSED_TIMER_EN)
*old_state |= BD70528_ELAPSED_STATE_BIT;
else
*old_state &= ~BD70528_ELAPSED_STATE_BIT;
if ((!enable) == (!(*old_state & BD70528_ELAPSED_STATE_BIT)))
return 0;
}
if (enable)
ctrl_reg |= BD70528_MASK_ELAPSED_TIMER_EN;
else
ctrl_reg &= ~BD70528_MASK_ELAPSED_TIMER_EN;
return regmap_write(bd70528->regmap, BD70528_REG_ELAPSED_TIMER_EN,
ctrl_reg);
}
static int bd70528_set_rtc_based_timers(struct bd70528_rtc *r, int new_state,
int *old_state)
{
int ret;
ret = bd70528_wdt_set(r->parent, new_state & BD70528_WDT_STATE_BIT,
old_state);
if (ret) {
dev_err(r->dev,
"Failed to disable WDG for RTC setting (%d)\n", ret);
return ret;
}
ret = bd70528_set_elapsed_tmr(r->parent,
new_state & BD70528_ELAPSED_STATE_BIT,
old_state);
if (ret) {
dev_err(r->dev,
"Failed to disable 'elapsed timer' for RTC setting\n");
return ret;
}
ret = bd70528_set_wake(r->parent, new_state & BD70528_WAKE_STATE_BIT,
old_state);
if (ret) {
dev_err(r->dev,
"Failed to disable 'wake timer' for RTC setting\n");
return ret;
}
return ret;
}
static int bd70528_re_enable_rtc_based_timers(struct bd70528_rtc *r,
int old_state)
{
if (!r->has_rtc_timers)
return 0;
return bd70528_set_rtc_based_timers(r, old_state, NULL);
}
static int bd70528_disable_rtc_based_timers(struct bd70528_rtc *r,
int *old_state)
{
if (!r->has_rtc_timers)
return 0;
return bd70528_set_rtc_based_timers(r, 0, old_state);
}
static inline void tmday2rtc(struct rtc_time *t, struct bd70528_rtc_day *d)
{
d->sec &= ~BD70528_MASK_RTC_SEC;
......@@ -267,52 +134,6 @@ static int bd71828_set_alarm(struct device *dev, struct rtc_wkalrm *a)
}
static int bd70528_set_alarm(struct device *dev, struct rtc_wkalrm *a)
{
struct bd70528_rtc_wake wake;
struct bd70528_rtc_alm alm;
int ret;
struct bd70528_rtc *r = dev_get_drvdata(dev);
ret = regmap_bulk_read(r->regmap, BD70528_REG_RTC_WAKE_START, &wake,
sizeof(wake));
if (ret) {
dev_err(dev, "Failed to read wake regs\n");
return ret;
}
ret = regmap_bulk_read(r->regmap, BD70528_REG_RTC_ALM_START, &alm,
sizeof(alm));
if (ret) {
dev_err(dev, "Failed to read alarm regs\n");
return ret;
}
tm2rtc(&a->time, &alm.data);
tmday2rtc(&a->time, &wake.time);
if (a->enabled) {
alm.alm_mask &= ~BD70528_MASK_ALM_EN;
wake.ctrl |= BD70528_MASK_WAKE_EN;
} else {
alm.alm_mask |= BD70528_MASK_ALM_EN;
wake.ctrl &= ~BD70528_MASK_WAKE_EN;
}
ret = regmap_bulk_write(r->regmap, BD70528_REG_RTC_WAKE_START, &wake,
sizeof(wake));
if (ret) {
dev_err(dev, "Failed to set wake time\n");
return ret;
}
ret = regmap_bulk_write(r->regmap, BD70528_REG_RTC_ALM_START, &alm,
sizeof(alm));
if (ret)
dev_err(dev, "Failed to set alarm time\n");
return ret;
}
static int bd71828_read_alarm(struct device *dev, struct rtc_wkalrm *a)
{
int ret;
......@@ -336,78 +157,28 @@ static int bd71828_read_alarm(struct device *dev, struct rtc_wkalrm *a)
return 0;
}
static int bd70528_read_alarm(struct device *dev, struct rtc_wkalrm *a)
static int bd71828_set_time(struct device *dev, struct rtc_time *t)
{
struct bd70528_rtc_alm alm;
int ret;
struct bd70528_rtc *r = dev_get_drvdata(dev);
ret = regmap_bulk_read(r->regmap, BD70528_REG_RTC_ALM_START, &alm,
sizeof(alm));
if (ret) {
dev_err(dev, "Failed to read alarm regs\n");
return ret;
}
rtc2tm(&alm.data, &a->time);
a->time.tm_mday = -1;
a->time.tm_mon = -1;
a->time.tm_year = -1;
a->enabled = !(alm.alm_mask & BD70528_MASK_ALM_EN);
a->pending = 0;
return 0;
}
static int bd70528_set_time_locked(struct device *dev, struct rtc_time *t)
{
int ret, tmpret, old_states;
struct bd70528_rtc_data rtc_data;
struct bd70528_rtc *r = dev_get_drvdata(dev);
ret = bd70528_disable_rtc_based_timers(r, &old_states);
if (ret)
return ret;
tmpret = regmap_bulk_read(r->regmap, r->reg_time_start, &rtc_data,
sizeof(rtc_data));
if (tmpret) {
ret = regmap_bulk_read(r->regmap, r->reg_time_start, &rtc_data,
sizeof(rtc_data));
if (ret) {
dev_err(dev, "Failed to read RTC time registers\n");
goto renable_out;
return ret;
}
tm2rtc(t, &rtc_data);
tmpret = regmap_bulk_write(r->regmap, r->reg_time_start, &rtc_data,
sizeof(rtc_data));
if (tmpret) {
ret = regmap_bulk_write(r->regmap, r->reg_time_start, &rtc_data,
sizeof(rtc_data));
if (ret)
dev_err(dev, "Failed to set RTC time\n");
goto renable_out;
}
renable_out:
ret = bd70528_re_enable_rtc_based_timers(r, old_states);
if (tmpret)
ret = tmpret;
return ret;
}
static int bd71828_set_time(struct device *dev, struct rtc_time *t)
{
return bd70528_set_time_locked(dev, t);
}
static int bd70528_set_time(struct device *dev, struct rtc_time *t)
{
int ret;
struct bd70528_rtc *r = dev_get_drvdata(dev);
bd70528_wdt_lock(r->parent);
ret = bd70528_set_time_locked(dev, t);
bd70528_wdt_unlock(r->parent);
return ret;
}
static int bd70528_get_time(struct device *dev, struct rtc_time *t)
{
struct bd70528_rtc *r = dev_get_drvdata(dev);
......@@ -427,31 +198,6 @@ static int bd70528_get_time(struct device *dev, struct rtc_time *t)
return 0;
}
static int bd70528_alm_enable(struct device *dev, unsigned int enabled)
{
int ret;
unsigned int enableval = BD70528_MASK_ALM_EN;
struct bd70528_rtc *r = dev_get_drvdata(dev);