Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
rtc: bd70528: Support BD72720 rtc
The BD72720 has similar RTC block as a few other ROHM PMICs.
Add support for BD72720 RTC.
Signed-off-by: Matti Vaittinen <mazziesaccount@gmail.com>
Acked-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Link: https://patch.msgid.link/3241773f0f8e8d8e591a8e948495686cfdee4875.1765804226.git.mazziesaccount@gmail.com
Signed-off-by: Lee Jones <lee@kernel.org>
authored by
Matti Vaittinen
and committed by
Lee Jones
0234e003
da4950b5
+16
-8
+2
-1
drivers/rtc/Kconfig
+2
-1
drivers/rtc/Kconfig
···
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depends on MFD_ROHM_BD71828
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help
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If you say Y here you will get support for the RTC
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block on ROHM BD71815 and BD71828 Power Management IC.
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block on ROHM BD71815, BD71828 and BD72720 Power
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Management ICs.
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This driver can also be built as a module. If so, the module
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will be called rtc-bd70528.
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-7
drivers/rtc/rtc-bd70528.c
+14
-7
drivers/rtc/rtc-bd70528.c
···
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#include <linux/bcd.h>
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#include <linux/mfd/rohm-bd71815.h>
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#include <linux/mfd/rohm-bd71828.h>
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#include <linux/mfd/rohm-bd72720.h>
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#include <linux/module.h>
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#include <linux/of.h>
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#include <linux/platform_device.h>
···
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/*
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* See also BD718XX_ALM_EN_OFFSET:
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* This works for BD71828 and BD71815 as they have same offset
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* between ALM0 start and ALM0_MASK. If new ICs are to be
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* added this requires proper check as ALM0_MASK is not located
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* at the end of ALM0 block - but after all ALM blocks so if
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* amount of ALMs differ the offset to enable/disable is likely
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* to be incorrect and enable/disable must be given as own
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* reg address here.
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* This works for BD71828, BD71815, and BD72720 as they all
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* have same offset between the ALM0 start and the ALM0_MASK.
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* If new ICs are to be added this requires proper check as
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* the ALM0_MASK is not located at the end of ALM0 block -
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* but after all ALM blocks. If amount of ALMs differ, the
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* offset to enable/disable is likely to be incorrect and
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* enable/disable must be given as own reg address here.
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*/
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bd_rtc->bd718xx_alm_block_start = BD71815_REG_RTC_ALM_START;
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hour_reg = BD71815_REG_HOUR;
···
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bd_rtc->reg_time_start = BD71828_REG_RTC_START;
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bd_rtc->bd718xx_alm_block_start = BD71828_REG_RTC_ALM_START;
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hour_reg = BD71828_REG_RTC_HOUR;
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break;
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case ROHM_CHIP_TYPE_BD72720:
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bd_rtc->reg_time_start = BD72720_REG_RTC_START;
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bd_rtc->bd718xx_alm_block_start = BD72720_REG_RTC_ALM_START;
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hour_reg = BD72720_REG_RTC_HOUR;
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break;
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default:
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dev_err(&pdev->dev, "Unknown chip\n");
···
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static const struct platform_device_id bd718x7_rtc_id[] = {
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{ "bd71828-rtc", ROHM_CHIP_TYPE_BD71828 },
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{ "bd71815-rtc", ROHM_CHIP_TYPE_BD71815 },
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{ "bd72720-rtc", ROHM_CHIP_TYPE_BD72720 },
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{ },
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};
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MODULE_DEVICE_TABLE(platform, bd718x7_rtc_id);