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path: root/drivers/rtc/rtc-r7301.c
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* rtc: Use devm_platform_ioremap_resource()Markus Elfring2019-10-061-6/+1
| | | | | | | | | | | | | | Simplify probe by using a known wrapper function. This issue was detected by using the Coccinelle software. Signed-off-by: Markus Elfring <elfring@users.sourceforge.net> Link: https://lore.kernel.org/r/4552ef52-f218-93b1-6dfa-668d137676f8@web.de Link: https://lore.kernel.org/r/5ecfcf43-d6b2-1a38-dee8-b8806f30bc83@web.de Link: https://lore.kernel.org/r/25448e11-c43f-9ae0-4c43-6f789accc026@web.de Reviewed-by: Akinobu Mita <akinobu.mita@gmail.com> Link: https://lore.kernel.org/r/8c17a59c-82ff-aa6b-5653-a38d786d3e83@web.de Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
* treewide: Add SPDX license identifier for more missed filesThomas Gleixner2019-05-211-0/+1
| | | | | | | | | | | | | | | | | Add SPDX license identifiers to all files which: - Have no license information of any form - Have MODULE_LICENCE("GPL*") inside which was used in the initial scan/conversion to ignore the file These files fall under the project license, GPL v2 only. The resulting SPDX license identifier is: GPL-2.0-only Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* headers: separate linux/mod_devicetable.h from linux/platform_device.hRandy Dunlap2018-07-071-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | At over 4000 #includes, <linux/platform_device.h> is the 9th most #included header file in the Linux kernel. It does not need <linux/mod_devicetable.h>, so drop that header and explicitly add <linux/mod_devicetable.h> to source files that need it. 4146 #include <linux/platform_device.h> After this patch, there are 225 files that use <linux/mod_devicetable.h>, for a reduction of around 3900 times that <linux/mod_devicetable.h> does not have to be read & parsed. 225 #include <linux/mod_devicetable.h> This patch was build-tested on 20 different arch-es. It also makes these drivers SubmitChecklist#1 compliant. Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Reported-by: kbuild test robot <lkp@intel.com> # drivers/media/platform/vimc/ Reported-by: kbuild test robot <lkp@intel.com> # drivers/pinctrl/pinctrl-u300.c Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* rtc: r7301: stop validating rtc_time in .read_timeAlexandre Belloni2018-03-021-1/+1
| | | | | | | 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 <alexandre.belloni@bootlin.com>
* rtc: r7301: Fix a possible sleep-in-atomic bug in rtc7301_set_timeJia-Ju Bai2018-01-121-1/+1
| | | | | | | | | | | | | | The driver may sleep under a spinlock. The function call path is: rtc7301_set_time (acquire the spinlock) usleep_range --> may sleep To fix it, usleep_range is replaced with udelay. This bug is found by my static analysis tool(DSAC) and checked by my code review. Signed-off-by: Jia-Ju Bai <baijiaju1990@gmail.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
* rtc: r7301: Fix a possible sleep-in-atomic bug in rtc7301_read_timeJia-Ju Bai2018-01-121-1/+1
| | | | | | | | | | | | | | | The driver may sleep under a spinlock. The function call path is: rtc7301_read_time (acquire the spinlock) rtc7301_wait_while_busy usleep_range --> may sleep To fix it, usleep_range is replaced with udelay. This bug is found by my static analysis tool(DSAC) and checked by my code review. Signed-off-by: Jia-Ju Bai <baijiaju1990@gmail.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
* rtc: add support for EPSON TOYOCOM RTC-7301SF/DGAkinobu Mita2016-12-191-0/+453
This adds support for EPSON TOYOCOM RTC-7301SF/DG which has parallel interface compatible with SRAM. This driver supports basic clock, calendar and alarm functionality. Tested with Microblaze linux running on Artix7 FPGA board with my own custom IP for RTC-7301. Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>