* [RFC V1 1/2] mfd: da9063: Upgrade of register definitions to support production silicon
2014-03-05 12:25 [RFC V1 0/2] da9063: Support for RTC and register definition updates Opensource [Steve Twiss]
@ 2014-03-05 12:25 ` Opensource [Steve Twiss]
2014-03-05 12:25 ` [RFC V1 2/2] rtc: da9063: RTC driver Opensource [Steve Twiss]
1 sibling, 0 replies; 5+ messages in thread
From: Opensource [Steve Twiss] @ 2014-03-05 12:25 UTC (permalink / raw)
To: Lee Jones, Mark Brown, Philipp Zabel, Samuel Ortiz; +Cc: David Dajun Chen, LKML
From: Opensource [Steve Twiss] <stwiss.opensource@diasemi.com>
This patch updates the register definitions for DA9063 to support the
production silicon variant code ID (0x5). These changes are not backwards
compatible with the previous register definitions and can only be used
with the production variant of DA9063.
Signed-off-by: Opensource [Steve Twiss] <stwiss.opensource@diasemi.com>
---
Checks performed with next-20140305/scripts/checkpatch.pl
registers.h total: 0 errors, 0 warnings, 1032 lines checked
A brief summary of the changes include:
- Introduction of a new DA9063_REG_ALARM_S register (now appearing at
addr=0x46) allowing alarm second resolutions and which causes a shift
in the register map for the RTC registers;
- Two new configuration registers DA9063_REG_CONFIG_M/N at 0x112 & 0x113;
- Modified register ranges for MON_REG_[1-6] which now appears at the
addr=0x114 onwards;
- New register addresses for the general purpose registers GP_ID_[0-19]
(now appearing at 0x121 onwards);
- Renaming of some definitions to match our hardware design conventions;
- There are also some bit-pattern additions that define some functionality
alterations of the registers. One notable addition is:
DA9063_BUCK_SLOWSTART can also be found in the CONTROL_B register and
enables a BUCK slow start (reduced inrush current; increased startup
time);
This patch applies against kernel version linux-next next-20140305
Regards,
Steve Twiss, Dialog Semiconductor Ltd.
include/linux/mfd/da9063/registers.h | 120 ++++++++++++++++++----------------
1 file changed, 62 insertions(+), 58 deletions(-)
diff --git a/include/linux/mfd/da9063/registers.h b/include/linux/mfd/da9063/registers.h
index 5834813..09a85c6 100644
--- a/include/linux/mfd/da9063/registers.h
+++ b/include/linux/mfd/da9063/registers.h
@@ -17,11 +17,7 @@
#define _DA9063_REG_H
#define DA9063_I2C_PAGE_SEL_SHIFT 1
-
#define DA9063_EVENT_REG_NUM 4
-#define DA9210_EVENT_REG_NUM 2
-#define DA9063_EXT_EVENT_REG_NUM (DA9063_EVENT_REG_NUM + \
- DA9210_EVENT_REG_NUM)
/* Page selection I2C or SPI always in the begining of any page. */
/* Page 0 : I2C access 0x000 - 0x0FF SPI access 0x000 - 0x07F */
@@ -61,9 +57,9 @@
#define DA9063_REG_GPIO_10_11 0x1A
#define DA9063_REG_GPIO_12_13 0x1B
#define DA9063_REG_GPIO_14_15 0x1C
-#define DA9063_REG_GPIO_MODE_0_7 0x1D
-#define DA9063_REG_GPIO_MODE_8_15 0x1E
-#define DA9063_REG_GPIO_SWITCH_CONT 0x1F
+#define DA9063_REG_GPIO_MODE0_7 0x1D
+#define DA9063_REG_GPIO_MODE8_15 0x1E
+#define DA9063_REG_SWITCH_CONT 0x1F
/* Regulator Control Registers */
#define DA9063_REG_BCORE2_CONT 0x20
@@ -83,7 +79,7 @@
#define DA9063_REG_LDO9_CONT 0x2E
#define DA9063_REG_LDO10_CONT 0x2F
#define DA9063_REG_LDO11_CONT 0x30
-#define DA9063_REG_VIB 0x31
+#define DA9063_REG_SUPPLIES 0x31
#define DA9063_REG_DVC_1 0x32
#define DA9063_REG_DVC_2 0x33
@@ -97,9 +93,9 @@
#define DA9063_REG_ADCIN1_RES 0x3A
#define DA9063_REG_ADCIN2_RES 0x3B
#define DA9063_REG_ADCIN3_RES 0x3C
-#define DA9063_REG_MON1_RES 0x3D
-#define DA9063_REG_MON2_RES 0x3E
-#define DA9063_REG_MON3_RES 0x3F
+#define DA9063_REG_MON_A8_RES 0x3D
+#define DA9063_REG_MON_A9_RES 0x3E
+#define DA9063_REG_MON_A10_RES 0x3F
/* RTC Calendar and Alarm Registers */
#define DA9063_REG_COUNT_S 0x40
@@ -108,15 +104,16 @@
#define DA9063_REG_COUNT_D 0x43
#define DA9063_REG_COUNT_MO 0x44
#define DA9063_REG_COUNT_Y 0x45
-#define DA9063_REG_ALARM_MI 0x46
-#define DA9063_REG_ALARM_H 0x47
-#define DA9063_REG_ALARM_D 0x48
-#define DA9063_REG_ALARM_MO 0x49
-#define DA9063_REG_ALARM_Y 0x4A
-#define DA9063_REG_SECOND_A 0x4B
-#define DA9063_REG_SECOND_B 0x4C
-#define DA9063_REG_SECOND_C 0x4D
-#define DA9063_REG_SECOND_D 0x4E
+#define DA9063_REG_ALARM_S 0x46
+#define DA9063_REG_ALARM_MI 0x47
+#define DA9063_REG_ALARM_H 0x48
+#define DA9063_REG_ALARM_D 0x49
+#define DA9063_REG_ALARM_MO 0x4A
+#define DA9063_REG_ALARM_Y 0x4B
+#define DA9063_REG_SECOND_A 0x4C
+#define DA9063_REG_SECOND_B 0x4D
+#define DA9063_REG_SECOND_C 0x4E
+#define DA9063_REG_SECOND_D 0x4F
/* Sequencer Control Registers */
#define DA9063_REG_SEQ 0x81
@@ -226,35 +223,37 @@
#define DA9063_REG_CONFIG_J 0x10F
#define DA9063_REG_CONFIG_K 0x110
#define DA9063_REG_CONFIG_L 0x111
-#define DA9063_REG_MON_REG_1 0x112
-#define DA9063_REG_MON_REG_2 0x113
-#define DA9063_REG_MON_REG_3 0x114
-#define DA9063_REG_MON_REG_4 0x115
-#define DA9063_REG_MON_REG_5 0x116
-#define DA9063_REG_MON_REG_6 0x117
-#define DA9063_REG_TRIM_CLDR 0x118
-
+#define DA9063_REG_CONFIG_M 0x112
+#define DA9063_REG_CONFIG_N 0x113
+
+#define DA9063_REG_MON_REG_1 0x114
+#define DA9063_REG_MON_REG_2 0x115
+#define DA9063_REG_MON_REG_3 0x116
+#define DA9063_REG_MON_REG_4 0x117
+#define DA9063_REG_MON_REG_5 0x11E
+#define DA9063_REG_MON_REG_6 0x11F
+#define DA9063_REG_TRIM_CLDR 0x120
/* General Purpose Registers */
-#define DA9063_REG_GP_ID_0 0x119
-#define DA9063_REG_GP_ID_1 0x11A
-#define DA9063_REG_GP_ID_2 0x11B
-#define DA9063_REG_GP_ID_3 0x11C
-#define DA9063_REG_GP_ID_4 0x11D
-#define DA9063_REG_GP_ID_5 0x11E
-#define DA9063_REG_GP_ID_6 0x11F
-#define DA9063_REG_GP_ID_7 0x120
-#define DA9063_REG_GP_ID_8 0x121
-#define DA9063_REG_GP_ID_9 0x122
-#define DA9063_REG_GP_ID_10 0x123
-#define DA9063_REG_GP_ID_11 0x124
-#define DA9063_REG_GP_ID_12 0x125
-#define DA9063_REG_GP_ID_13 0x126
-#define DA9063_REG_GP_ID_14 0x127
-#define DA9063_REG_GP_ID_15 0x128
-#define DA9063_REG_GP_ID_16 0x129
-#define DA9063_REG_GP_ID_17 0x12A
-#define DA9063_REG_GP_ID_18 0x12B
-#define DA9063_REG_GP_ID_19 0x12C
+#define DA9063_REG_GP_ID_0 0x121
+#define DA9063_REG_GP_ID_1 0x122
+#define DA9063_REG_GP_ID_2 0x123
+#define DA9063_REG_GP_ID_3 0x124
+#define DA9063_REG_GP_ID_4 0x125
+#define DA9063_REG_GP_ID_5 0x126
+#define DA9063_REG_GP_ID_6 0x127
+#define DA9063_REG_GP_ID_7 0x128
+#define DA9063_REG_GP_ID_8 0x129
+#define DA9063_REG_GP_ID_9 0x12A
+#define DA9063_REG_GP_ID_10 0x12B
+#define DA9063_REG_GP_ID_11 0x12C
+#define DA9063_REG_GP_ID_12 0x12D
+#define DA9063_REG_GP_ID_13 0x12E
+#define DA9063_REG_GP_ID_14 0x12F
+#define DA9063_REG_GP_ID_15 0x130
+#define DA9063_REG_GP_ID_16 0x131
+#define DA9063_REG_GP_ID_17 0x132
+#define DA9063_REG_GP_ID_18 0x133
+#define DA9063_REG_GP_ID_19 0x134
/* Chip ID and variant */
#define DA9063_REG_CHIP_ID 0x181
@@ -405,8 +404,10 @@
/* DA9063_REG_CONTROL_B (addr=0x0F) */
#define DA9063_CHG_SEL 0x01
#define DA9063_WATCHDOG_PD 0x02
+#define DA9063_RESET_BLINKING 0x04
#define DA9063_NRES_MODE 0x08
#define DA9063_NONKEY_LOCK 0x10
+#define DA9063_BUCK_SLOWSTART 0x80
/* DA9063_REG_CONTROL_C (addr=0x10) */
#define DA9063_DEBOUNCING_MASK 0x07
@@ -466,6 +467,7 @@
#define DA9063_GPADC_PAUSE 0x02
#define DA9063_PMIF_DIS 0x04
#define DA9063_HS2WIRE_DIS 0x08
+#define DA9063_CLDR_PAUSE 0x10
#define DA9063_BBAT_DIS 0x20
#define DA9063_OUT_32K_PAUSE 0x40
#define DA9063_PMCONT_DIS 0x80
@@ -660,7 +662,7 @@
#define DA9063_GPIO15_TYPE_GPO 0x04
#define DA9063_GPIO15_NO_WAKEUP 0x80
-/* DA9063_REG_GPIO_MODE_0_7 (addr=0x1D) */
+/* DA9063_REG_GPIO_MODE0_7 (addr=0x1D) */
#define DA9063_GPIO0_MODE 0x01
#define DA9063_GPIO1_MODE 0x02
#define DA9063_GPIO2_MODE 0x04
@@ -670,7 +672,7 @@
#define DA9063_GPIO6_MODE 0x40
#define DA9063_GPIO7_MODE 0x80
-/* DA9063_REG_GPIO_MODE_8_15 (addr=0x1E) */
+/* DA9063_REG_GPIO_MODE8_15 (addr=0x1E) */
#define DA9063_GPIO8_MODE 0x01
#define DA9063_GPIO9_MODE 0x02
#define DA9063_GPIO10_MODE 0x04
@@ -702,12 +704,12 @@
#define DA9063_SWITCH_SR_5MV 0x10
#define DA9063_SWITCH_SR_10MV 0x20
#define DA9063_SWITCH_SR_50MV 0x30
-#define DA9063_SWITCH_SR_DIS 0x40
+#define DA9063_CORE_SW_INTERNAL 0x40
#define DA9063_CP_EN_MODE 0x80
/* DA9063_REGL_Bxxxx_CONT common bits (addr=0x20-0x25) */
#define DA9063_BUCK_EN 0x01
-#define DA9063_BUCK_GPI_MASK 0x06
+#define DA9063_BUCK_GPI_MASK 0x06
#define DA9063_BUCK_GPI_OFF 0x00
#define DA9063_BUCK_GPI_GPIO1 0x02
#define DA9063_BUCK_GPI_GPIO2 0x04
@@ -841,25 +843,27 @@
#define DA9063_COUNT_YEAR_MASK 0x3F
#define DA9063_MONITOR 0x40
-/* DA9063_REG_ALARM_MI (addr=0x46) */
+/* DA9063_REG_ALARM_S (addr=0x46) */
+#define DA9063_ALARM_S_MASK 0x3F
#define DA9063_ALARM_STATUS_ALARM 0x80
#define DA9063_ALARM_STATUS_TICK 0x40
+/* DA9063_REG_ALARM_MI (addr=0x47) */
#define DA9063_ALARM_MIN_MASK 0x3F
-/* DA9063_REG_ALARM_H (addr=0x47) */
+/* DA9063_REG_ALARM_H (addr=0x48) */
#define DA9063_ALARM_HOUR_MASK 0x1F
-/* DA9063_REG_ALARM_D (addr=0x48) */
+/* DA9063_REG_ALARM_D (addr=0x49) */
#define DA9063_ALARM_DAY_MASK 0x1F
-/* DA9063_REG_ALARM_MO (addr=0x49) */
+/* DA9063_REG_ALARM_MO (addr=0x4A) */
#define DA9063_TICK_WAKE 0x20
#define DA9063_TICK_TYPE 0x10
#define DA9063_TICK_TYPE_SEC 0x00
#define DA9063_TICK_TYPE_MIN 0x10
#define DA9063_ALARM_MONTH_MASK 0x0F
-/* DA9063_REG_ALARM_Y (addr=0x4A) */
+/* DA9063_REG_ALARM_Y (addr=0x4B) */
#define DA9063_TICK_ON 0x80
#define DA9063_ALARM_ON 0x40
#define DA9063_ALARM_YEAR_MASK 0x3F
@@ -906,7 +910,7 @@
/* DA9063_REG_Bxxxx_CFG common bits (addr=0x9D-0xA2) */
#define DA9063_BUCK_FB_MASK 0x07
-#define DA9063_BUCK_PD_DIS_SHIFT 5
+#define DA9063_BUCK_PD_DIS_MASK 0x20
#define DA9063_BUCK_MODE_MASK 0xC0
#define DA9063_BUCK_MODE_MANUAL 0x00
#define DA9063_BUCK_MODE_SLEEP 0x40
--
end-of-patch for RFC V1
^ permalink raw reply related [flat|nested] 5+ messages in thread
* [RFC V1 2/2] rtc: da9063: RTC driver
2014-03-05 12:25 [RFC V1 0/2] da9063: Support for RTC and register definition updates Opensource [Steve Twiss]
2014-03-05 12:25 ` [RFC V1 1/2] mfd: da9063: Upgrade of register definitions to support production silicon Opensource [Steve Twiss]
@ 2014-03-05 12:25 ` Opensource [Steve Twiss]
2014-03-05 15:41 ` Alessandro Zummo
1 sibling, 1 reply; 5+ messages in thread
From: Opensource [Steve Twiss] @ 2014-03-05 12:25 UTC (permalink / raw)
To: Alessandro Zummo; +Cc: David Dajun Chen, LKML, RTC linux
From: Opensource [Steve Twiss] <stwiss.opensource@diasemi.com>
Add the RTC driver for DA9063.
Signed-off-by: Opensource [Steve Twiss] <stwiss.opensource@diasemi.com>
---
Checks performed with next-20140305/scripts/checkpatch.pl
Kconfig total: 0 errors, 21 warnings, 1344 lines checked
Makefile total: 0 errors, 0 warnings, 139 lines checked
rtc-da9063.c total: 0 errors, 0 warnings, 332 lines checked
Despite the 21 warnings from the Kconfig, these are not assocuated with
this patch.
This driver requires the register changes associated with this patch
set. In particular, the new register DA9063_REG_ALARM_S (now appearing
at addr=0x46) and DA9063_ALARM_S_MASK 0x3F are required to allow the
triggering of alarms down to the second resolution level.
This patch applies against kernel version linux-next next-20140305
Regards,
Steve Twiss, Dialog Semiconductor Ltd.
drivers/rtc/Kconfig | 10 ++
drivers/rtc/Makefile | 1 +
drivers/rtc/rtc-da9063.c | 332 ++++++++++++++++++++++++++++++++++++++++++++++
3 files changed, 343 insertions(+)
create mode 100644 drivers/rtc/rtc-da9063.c
diff --git a/drivers/rtc/Kconfig b/drivers/rtc/Kconfig
index db933de..472a5b9 100644
--- a/drivers/rtc/Kconfig
+++ b/drivers/rtc/Kconfig
@@ -746,6 +746,16 @@ config RTC_DRV_DA9055
This driver can also be built as a module. If so, the module
will be called rtc-da9055
+config RTC_DRV_DA9063
+ tristate "Dialog Semiconductor DA9063 RTC"
+ depends on MFD_DA9063
+ help
+ If you say yes here you will get support for the RTC subsystem
+ of the Dialog Semiconductor DA9063.
+
+ This driver can also be built as a module. If so, the module
+ will be called "rtc-da9063".
+
config RTC_DRV_EFI
tristate "EFI RTC"
depends on IA64
diff --git a/drivers/rtc/Makefile b/drivers/rtc/Makefile
index b427bf7..4a4fed9 100644
--- a/drivers/rtc/Makefile
+++ b/drivers/rtc/Makefile
@@ -32,6 +32,7 @@ obj-$(CONFIG_RTC_DRV_CMOS) += rtc-cmos.o
obj-$(CONFIG_RTC_DRV_COH901331) += rtc-coh901331.o
obj-$(CONFIG_RTC_DRV_DA9052) += rtc-da9052.o
obj-$(CONFIG_RTC_DRV_DA9055) += rtc-da9055.o
+obj-$(CONFIG_RTC_DRV_DA9063) += rtc-da9063.o
obj-$(CONFIG_RTC_DRV_DAVINCI) += rtc-davinci.o
obj-$(CONFIG_RTC_DRV_DM355EVM) += rtc-dm355evm.o
obj-$(CONFIG_RTC_DRV_VRTC) += rtc-mrst.o
diff --git a/drivers/rtc/rtc-da9063.c b/drivers/rtc/rtc-da9063.c
new file mode 100644
index 0000000..26c506bb2
--- /dev/null
+++ b/drivers/rtc/rtc-da9063.c
@@ -0,0 +1,332 @@
+/* rtc-da9063.c - Real time clock device driver for DA9063
+ * Copyright (C) 2013-14 Dialog Semiconductor Ltd.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Library General Public License for more details.
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/platform_device.h>
+#include <linux/interrupt.h>
+#include <linux/rtc.h>
+#include <linux/slab.h>
+#include <linux/delay.h>
+#include <linux/regmap.h>
+#include <linux/mfd/da9063/registers.h>
+#include <linux/mfd/da9063/core.h>
+
+#define YEARS_TO_DA9063(year) ((year) - 100)
+#define MONTHS_TO_DA9063(month) ((month) + 1)
+#define YEARS_FROM_DA9063(year) ((year) + 100)
+#define MONTHS_FROM_DA9063(month) ((month) - 1)
+
+#define RTC_DATA_LEN (DA9063_REG_COUNT_Y - DA9063_REG_COUNT_S + 1)
+#define RTC_SEC 0
+#define RTC_MIN 1
+#define RTC_HOUR 2
+#define RTC_DAY 3
+#define RTC_MONTH 4
+#define RTC_YEAR 5
+
+struct da9063_rtc {
+ struct rtc_device *rtc_dev;
+ struct da9063 *hw;
+ struct rtc_time alarm_time;
+ bool rtc_sync;
+};
+
+static void da9063_data_to_tm(u8 *data, struct rtc_time *tm)
+{
+ tm->tm_sec = data[RTC_SEC] & DA9063_COUNT_SEC_MASK;
+ tm->tm_min = data[RTC_MIN] & DA9063_COUNT_MIN_MASK;
+ tm->tm_hour = data[RTC_HOUR] & DA9063_COUNT_HOUR_MASK;
+ tm->tm_mday = data[RTC_DAY] & DA9063_COUNT_DAY_MASK;
+ tm->tm_mon = MONTHS_FROM_DA9063(data[RTC_MONTH] &
+ DA9063_COUNT_MONTH_MASK);
+ tm->tm_year = YEARS_FROM_DA9063(data[RTC_YEAR] &
+ DA9063_COUNT_YEAR_MASK);
+}
+
+static void da9063_tm_to_data(struct rtc_time *tm, u8 *data)
+{
+ data[RTC_SEC] &= ~DA9063_COUNT_SEC_MASK;
+ data[RTC_SEC] |= tm->tm_sec & DA9063_COUNT_SEC_MASK;
+
+ data[RTC_MIN] &= ~DA9063_COUNT_MIN_MASK;
+ data[RTC_MIN] |= tm->tm_min & DA9063_COUNT_MIN_MASK;
+
+ data[RTC_HOUR] &= ~DA9063_COUNT_HOUR_MASK;
+ data[RTC_HOUR] |= tm->tm_hour & DA9063_COUNT_HOUR_MASK;
+
+ data[RTC_DAY] &= ~DA9063_COUNT_DAY_MASK;
+ data[RTC_DAY] |= tm->tm_mday & DA9063_COUNT_DAY_MASK;
+
+ data[RTC_MONTH] &= ~DA9063_COUNT_MONTH_MASK;
+ data[RTC_MONTH] |= MONTHS_TO_DA9063(tm->tm_mon) &
+ DA9063_COUNT_MONTH_MASK;
+
+ data[RTC_YEAR] &= ~DA9063_COUNT_YEAR_MASK;
+ data[RTC_YEAR] |= YEARS_TO_DA9063(tm->tm_year) &
+ DA9063_COUNT_YEAR_MASK;
+}
+
+static int da9063_rtc_stop_alarm(struct device *dev)
+{
+ struct da9063_rtc *rtc = dev_get_drvdata(dev);
+ return regmap_update_bits(rtc->hw->regmap, DA9063_REG_ALARM_Y,
+ DA9063_ALARM_ON, 0);
+}
+
+static int da9063_rtc_start_alarm(struct device *dev)
+{
+ struct da9063_rtc *rtc = dev_get_drvdata(dev);
+ return regmap_update_bits(rtc->hw->regmap, DA9063_REG_ALARM_Y,
+ DA9063_ALARM_ON, DA9063_ALARM_ON);
+}
+
+static int da9063_rtc_read_time(struct device *dev, struct rtc_time *tm)
+{
+ struct da9063_rtc *rtc = dev_get_drvdata(dev);
+ unsigned long tm_secs;
+ unsigned long al_secs;
+ u8 data[RTC_DATA_LEN];
+ int ret;
+
+ ret = regmap_bulk_read(rtc->hw->regmap, DA9063_REG_COUNT_S,
+ data, RTC_DATA_LEN);
+ if (ret < 0) {
+ dev_err(dev, "Failed to read RTC time data: %d\n", ret);
+ return ret;
+ }
+
+ if (!(data[RTC_SEC] & DA9063_RTC_READ)) {
+ dev_dbg(dev, "RTC not yet ready to be read by the host\n");
+ return -EINVAL;
+ }
+
+ da9063_data_to_tm(data, tm);
+
+ (void)rtc_tm_to_time(tm, &tm_secs);
+ (void)rtc_tm_to_time(&rtc->alarm_time, &al_secs);
+
+ /* handle the rtc synchronisation delay */
+ if (rtc->rtc_sync == true && al_secs - tm_secs == 1)
+ (void)memcpy((void *)tm, (const void *)&rtc->alarm_time,
+ sizeof(struct rtc_time));
+ else
+ rtc->rtc_sync = false;
+
+ return rtc_valid_tm(tm);
+}
+
+static int da9063_rtc_set_time(struct device *dev, struct rtc_time *tm)
+{
+ struct da9063_rtc *rtc = dev_get_drvdata(dev);
+ u8 data[RTC_DATA_LEN];
+ int ret;
+
+ da9063_tm_to_data(tm, data);
+ ret = regmap_bulk_write(rtc->hw->regmap, DA9063_REG_COUNT_S,
+ data, RTC_DATA_LEN);
+ if (ret < 0)
+ dev_err(dev, "Failed to set RTC time data: %d\n", ret);
+
+ return ret;
+}
+
+static int da9063_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alrm)
+{
+ struct da9063_rtc *rtc = dev_get_drvdata(dev);
+ u8 data[RTC_DATA_LEN];
+ int ret;
+ unsigned int val;
+
+ ret = regmap_bulk_read(rtc->hw->regmap, DA9063_REG_ALARM_S,
+ &data[RTC_SEC], RTC_DATA_LEN);
+ if (ret < 0)
+ return ret;
+
+ da9063_data_to_tm(data, &alrm->time);
+
+ alrm->enabled = !!(data[RTC_YEAR] & DA9063_ALARM_ON);
+
+ ret = regmap_read(rtc->hw->regmap, DA9063_REG_EVENT_A, &val);
+ if (ret < 0)
+ return ret;
+
+ if (val & (DA9063_E_ALARM))
+ alrm->pending = 1;
+ else
+ alrm->pending = 0;
+
+ return 0;
+}
+
+static int da9063_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alrm)
+{
+ struct da9063_rtc *rtc = dev_get_drvdata(dev);
+ u8 data[RTC_DATA_LEN];
+ int ret;
+
+ da9063_tm_to_data(&alrm->time, data);
+
+ ret = da9063_rtc_stop_alarm(dev);
+ if (ret < 0) {
+ dev_err(dev, "Failed to stop alarm: %d\n", ret);
+ return ret;
+ }
+
+ ret = regmap_bulk_write(rtc->hw->regmap, DA9063_REG_ALARM_S,
+ data, RTC_DATA_LEN);
+ if (ret < 0) {
+ dev_err(dev, "Failed to write alarm: %d\n", ret);
+ return ret;
+ }
+
+ rtc->alarm_time = alrm->time;
+
+ if (alrm->enabled) {
+ ret = da9063_rtc_start_alarm(dev);
+ if (ret < 0) {
+ dev_err(dev, "Failed to start alarm: %d\n", ret);
+ return ret;
+ }
+ }
+
+ return ret;
+}
+
+static int da9063_rtc_alarm_irq_enable(struct device *dev, unsigned int enabled)
+{
+ if (enabled)
+ return da9063_rtc_start_alarm(dev);
+ else
+ return da9063_rtc_stop_alarm(dev);
+}
+
+static irqreturn_t da9063_alarm_event(int irq, void *data)
+{
+ struct da9063_rtc *rtc = data;
+
+ regmap_update_bits(rtc->hw->regmap, DA9063_REG_ALARM_Y,
+ DA9063_ALARM_ON, 0);
+
+ rtc->rtc_sync = true;
+ rtc_update_irq(rtc->rtc_dev, 1, RTC_IRQF | RTC_AF);
+
+ return IRQ_HANDLED;
+}
+
+static const struct rtc_class_ops da9063_rtc_ops = {
+ .read_time = da9063_rtc_read_time,
+ .set_time = da9063_rtc_set_time,
+ .read_alarm = da9063_rtc_read_alarm,
+ .set_alarm = da9063_rtc_set_alarm,
+ .alarm_irq_enable = da9063_rtc_alarm_irq_enable,
+};
+
+static int da9063_rtc_probe(struct platform_device *pdev)
+{
+ struct da9063 *da9063 = dev_get_drvdata(pdev->dev.parent);
+ struct da9063_rtc *rtc;
+ int irq_alarm;
+ u8 data[RTC_DATA_LEN];
+ int ret;
+
+ ret = regmap_update_bits(da9063->regmap, DA9063_REG_CONTROL_E,
+ DA9063_RTC_EN, DA9063_RTC_EN);
+ if (ret < 0) {
+ dev_err(&pdev->dev, "Failed to enable RTC\n");
+ goto err;
+ }
+
+ ret = regmap_update_bits(da9063->regmap, DA9063_REG_EN_32K,
+ DA9063_CRYSTAL, DA9063_CRYSTAL);
+ if (ret < 0) {
+ dev_err(&pdev->dev, "Failed to run 32kHz oscillator\n");
+ goto err;
+ }
+
+ ret = regmap_update_bits(da9063->regmap, DA9063_REG_ALARM_S,
+ DA9063_ALARM_STATUS_TICK | DA9063_ALARM_STATUS_ALARM,
+ 0);
+ if (ret < 0) {
+ dev_err(&pdev->dev, "Failed to access RTC alarm register\n");
+ goto err;
+ }
+
+ ret = regmap_update_bits(da9063->regmap, DA9063_REG_ALARM_S,
+ DA9063_ALARM_STATUS_ALARM,
+ DA9063_ALARM_STATUS_ALARM);
+ if (ret < 0) {
+ dev_err(&pdev->dev, "Failed to access RTC alarm register\n");
+ goto err;
+ }
+
+ ret = regmap_update_bits(da9063->regmap, DA9063_REG_ALARM_Y,
+ DA9063_TICK_ON, 0);
+ if (ret < 0) {
+ dev_err(&pdev->dev, "Failed to disable TICKs\n");
+ goto err;
+ }
+
+ ret = regmap_bulk_read(da9063->regmap, DA9063_REG_ALARM_S,
+ data, RTC_DATA_LEN);
+ if (ret < 0) {
+ dev_err(&pdev->dev, "Failed to read initial alarm data: %d\n",
+ ret);
+ goto err;
+ }
+
+ rtc = devm_kzalloc(&pdev->dev, sizeof(*rtc), GFP_KERNEL);
+ if (!rtc)
+ return -ENOMEM;
+
+ platform_set_drvdata(pdev, rtc);
+
+ rtc->hw = da9063;
+ rtc->rtc_dev = devm_rtc_device_register(&pdev->dev, DA9063_DRVNAME_RTC,
+ &da9063_rtc_ops, THIS_MODULE);
+ if (IS_ERR(rtc->rtc_dev)) {
+ ret = PTR_ERR(rtc->rtc_dev);
+ goto err;
+ }
+
+ irq_alarm = platform_get_irq_byname(pdev, "ALARM");
+ ret = devm_request_threaded_irq(&pdev->dev, irq_alarm, NULL,
+ da9063_alarm_event,
+ IRQF_TRIGGER_LOW | IRQF_ONESHOT,
+ "ALARM", rtc);
+ if (ret)
+ dev_err(&pdev->dev, "Failed to request ALARM IRQ %d: %d\n",
+ irq_alarm, ret);
+
+ da9063_data_to_tm(data, &rtc->alarm_time);
+ rtc->rtc_sync = false;
+err:
+ return ret;
+}
+
+static struct platform_driver da9063_rtc_driver = {
+ .probe = da9063_rtc_probe,
+ .driver = {
+ .name = DA9063_DRVNAME_RTC,
+ .owner = THIS_MODULE,
+ },
+};
+
+module_platform_driver(da9063_rtc_driver);
+
+MODULE_AUTHOR("S Twiss <stwiss.opensource@diasemi.com>");
+MODULE_DESCRIPTION("Real time clock device driver for Dialog DA9063");
+MODULE_LICENSE("GPL v2");
+MODULE_ALIAS("platform:" DA9063_DRVNAME_RTC);
--
end-of-patch for RFC V1
^ permalink raw reply related [flat|nested] 5+ messages in thread