kernel/linux.git/drivers/rtc/rtc-ds1302.c, branch v5.15.208

rtc: ds1302: Add SPI ID table

2021-11-18T18:16:58+00:00

[ Upstream commit 8719a17613e0233d707eb22e1645d217594631ef ] Currently autoloading for SPI devices does not use the DT ID table, it uses SPI modalises. Supporting OF modalises is going to be difficult if not impractical, an attempt was made but has been reverted, so ensure that module autoloading works for this driver by adding an id_table listing the SPI IDs for everything. Fixes: 96c8395e2166 ("spi: Revert modalias changes") Signed-off-by: Mark Brown Signed-off-by: Alexandre Belloni Link: https://lore.kernel.org/r/20210923194922.53386-2-broonie@kernel.org Signed-off-by: Sasha Levin

rtc: ds1302: Remove unused DRV_NAME

2019-11-15T10:58:14+00:00

DRV_NAME is unused, remove it. Signed-off-by: Nobuhiro Iwamatsu Link: https://lore.kernel.org/r/20191108002354.15016-1-iwamatsu@nigauri.org Signed-off-by: Alexandre Belloni

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 377

2019-06-05T15:37:10+00:00

Based on 1 normalized pattern(s): this file is subject to the terms and conditions of the gnu general public license version 2 see the file copying in the main directory of this archive for more details extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 9 file(s). Signed-off-by: Thomas Gleixner Reviewed-by: Allison Randal Reviewed-by: Armijn Hemel Reviewed-by: Kate Stewart Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190531081036.888539456@linutronix.de Signed-off-by: Greg Kroah-Hartman

rtc: stop validating rtc_time in .read_time

2018-03-02T09:09:58+00:00

The RTC core is always calling rtc_valid_tm after the read_time callback. It is not necessary to call it just before returning from the callback. Signed-off-by: Alexandre Belloni

rtc: ds1302: remove redundant initializations of pointer bp

2018-02-13T20:46:06+00:00

Pointe bp is being initialized and this value is never read, it is being updated to the same value later just before it is going to be used. Remove the initialization as it is never read and keep the setting of bp closer to the use of bp. Cleans up clang warnings: drivers/rtc/rtc-ds1302.c:115:7: warning: Value stored to 'bp' during its initialization is never read drivers/rtc/rtc-ds1302.c:46:7: warning: Value stored to 'bp' during its initialization is never read Signed-off-by: Colin Ian King Signed-off-by: Alexandre Belloni

rtc: constify rtc_class_ops structures

2016-09-01T23:24:06+00:00

Check for rtc_class_ops structures that are only passed to devm_rtc_device_register, rtc_device_register, platform_device_register_data, all of which declare the corresponding parameter as const. Declare rtc_class_ops structures that have these properties as const. The semantic patch that makes this change is as follows: (http://coccinelle.lip6.fr/) // @r disable optional_qualifier@ identifier i; position p; @@ static struct rtc_class_ops i@p = { ... }; @ok@ identifier r.i; expression e1,e2,e3,e4; position p; @@ ( devm_rtc_device_register(e1,e2,&i@p,e3) | rtc_device_register(e1,e2,&i@p,e3) | platform_device_register_data(e1,e2,e3,&i@p,e4) ) @bad@ position p != {r.p,ok.p}; identifier r.i; @@ i@p @depends on !bad disable optional_qualifier@ identifier r.i; @@ static +const struct rtc_class_ops i = { ... }; // Signed-off-by: Julia Lawall Acked-by: Baruch Siach Acked-by: Hans Ulli Kroll Acked-by: Linus Walleij Acked-by: Thierry Reding Signed-off-by: Alexandre Belloni

rtc: ds1302: fix write value for day of week register

2016-05-20T10:33:51+00:00

The valid range of day of week register for DS1302 is 1 to 7. But the set_time callback for rtc-ds1302 attempts to write the value of tm->tm_wday which is in the range 0 to 6. While the get_time callback correctly decodes the register. Signed-off-by: Akinobu Mita Cc: Sergey Yanovich Cc: Alessandro Zummo Cc: Alexandre Belloni Signed-off-by: Alexandre Belloni

rtc: ds1302: fix error check in set_time

2016-05-20T10:33:51+00:00

The set_time callback for rtc-ds1302 doesn't write clock registers because the error check for the return value from spi_write_then_read() is not correct. spi_write_then_read() which returns zero on success. Signed-off-by: Akinobu Mita Cc: Sergey Yanovich Cc: Alessandro Zummo Cc: Alexandre Belloni Signed-off-by: Alexandre Belloni

rtc: remove useless DRV_VERSION

2016-05-20T10:33:51+00:00

Many drivers are defining a DRV_VERSION. This is often only used for MODULE_VERSION and sometimes to print an info message at probe time. This is kind of pointless as they are all versionned with the kernel anyway. Also the core will print a message when a new rtc is found. Signed-off-by: Alexandre Belloni

rtc: ds1302: rewrite using SPI

2016-05-20T10:33:51+00:00

DS1302 is an half-duplex SPI device. The driver respects this fact now. Pin configurations should be implemented using SPI subsystem. Signed-off-by: Sergei Ianovich Acked-by: Rob Herring Signed-off-by: Alexandre Belloni