diff options
author | Tom Rini <trini@konsulko.com> | 2023-02-07 20:36:16 -0500 |
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committer | Tom Rini <trini@konsulko.com> | 2023-02-07 20:36:16 -0500 |
commit | 94fe4ed9455d559ccca45865c195fe4ecdaffb51 (patch) | |
tree | b56e39c0847ac222c122e8feda40c27af21a0a30 /drivers/rtc/at91sam9_rtt.c | |
parent | b69026c91f2e98b247120e217a986f5056724baf (diff) | |
parent | d727ace9abf13eb72e7ac29113f52fa3fd3357bb (diff) |
Merge branch '2023-02-07-Kconfig-cleanup-dead-code-removal'
To quote the author:
This series adds source scanning to moveconfig.py so that it can look
for Kconfig options mentioned in the source which do not appear in
Kconfig, and vice versa.
This tool is then used to clean up the unused or obsolete options
mentioned in Makefiles, along with any attached source code.
Diffstat (limited to 'drivers/rtc/at91sam9_rtt.c')
-rw-r--r-- | drivers/rtc/at91sam9_rtt.c | 78 |
1 files changed, 0 insertions, 78 deletions
diff --git a/drivers/rtc/at91sam9_rtt.c b/drivers/rtc/at91sam9_rtt.c deleted file mode 100644 index 6f92660ef1d..00000000000 --- a/drivers/rtc/at91sam9_rtt.c +++ /dev/null @@ -1,78 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0+ -/* - * (C) Copyright 2010 - * Reinhard Meyer, reinhard.meyer@emk-elektronik.de - */ - -/* - * Date & Time support for the internal Real-time Timer - * of AT91SAM9260 and compatibles. - * Compatible with the LinuX rtc driver workaround: - * The RTT cannot be written to, but only reset. - * The actual time is the sum of RTT and one of - * the four GPBR registers. - * - * The at91sam9260 has 4 GPBR (0-3). - * For their typical use see at91_gpbr.h ! - * - * make sure u-boot and kernel use the same GPBR ! - */ - -#include <common.h> -#include <command.h> -#include <rtc.h> -#include <asm/io.h> -#include <linux/errno.h> -#include <asm/arch/hardware.h> -#include <asm/arch/at91_rtt.h> -#include <asm/arch/at91_gpbr.h> - -int rtc_get (struct rtc_time *tmp) -{ - at91_rtt_t *rtt = (at91_rtt_t *) ATMEL_BASE_RTT; - at91_gpbr_t *gpbr = (at91_gpbr_t *) ATMEL_BASE_GPBR; - ulong tim; - ulong tim2; - ulong off; - - do { - tim = readl(&rtt->vr); - tim2 = readl(&rtt->vr); - } while (tim!=tim2); - off = readl(&gpbr->reg[AT91_GPBR_INDEX_TIMEOFF]); - /* off==0 means time is invalid, but we ignore that */ - rtc_to_tm(tim+off, tmp); - return 0; -} - -int rtc_set (struct rtc_time *tmp) -{ - at91_rtt_t *rtt = (at91_rtt_t *) ATMEL_BASE_RTT; - at91_gpbr_t *gpbr = (at91_gpbr_t *) ATMEL_BASE_GPBR; - ulong tim; - - tim = rtc_mktime(tmp); - - /* clear alarm, set prescaler to 32768, clear counter */ - writel(32768+AT91_RTT_RTTRST, &rtt->mr); - writel(~0, &rtt->ar); - writel(tim, &gpbr->reg[AT91_GPBR_INDEX_TIMEOFF]); - /* wait for counter clear to happen, takes less than a 1/32768th second */ - while (readl(&rtt->vr) != 0) - ; - return 0; -} - -void rtc_reset (void) -{ - at91_rtt_t *rtt = (at91_rtt_t *) ATMEL_BASE_RTT; - at91_gpbr_t *gpbr = (at91_gpbr_t *) ATMEL_BASE_GPBR; - - /* clear alarm, set prescaler to 32768, clear counter */ - writel(32768+AT91_RTT_RTTRST, &rtt->mr); - writel(~0, &rtt->ar); - writel(0, &gpbr->reg[AT91_GPBR_INDEX_TIMEOFF]); - /* wait for counter clear to happen, takes less than a 1/32768th second */ - while (readl(&rtt->vr) != 0) - ; -} |