On Fri, Jun 2, 2023 at 5:51 PM Binbin Zhou <zhoubinbin@xxxxxxxxxxx> wrote:
>
> Remove the ls1x-rtc driver as it is obsolete. We will continue to
> support the ls1x RTC in the upcoming Loongson unified RTC driver
> rtc-loongson.
>
> Cc: Keguang Zhang <keguang.zhang@xxxxxxxxx>
> Cc: zhao zhang <zhzhl555@xxxxxxxxx>
> Cc: Yang Ling <gnaygnil@xxxxxxxxx>
> Signed-off-by: Binbin Zhou <zhoubinbin@xxxxxxxxxxx>
Acked-by: Keguang Zhang <keguang.zhang@xxxxxxxxx>
> ---
> drivers/rtc/Kconfig | 10 ---
> drivers/rtc/Makefile | 1 -
> drivers/rtc/rtc-ls1x.c | 192 -----------------------------------------
> 3 files changed, 203 deletions(-)
> delete mode 100644 drivers/rtc/rtc-ls1x.c
>
> diff --git a/drivers/rtc/Kconfig b/drivers/rtc/Kconfig
> index 753872408615..599f5110a251 100644
> --- a/drivers/rtc/Kconfig
> +++ b/drivers/rtc/Kconfig
> @@ -1726,16 +1726,6 @@ config RTC_DRV_TEGRA
> This drive can also be built as a module. If so, the module
> will be called rtc-tegra.
>
> -config RTC_DRV_LOONGSON1
> - tristate "loongson1 RTC support"
> - depends on MACH_LOONGSON32
> - help
> - This is a driver for the loongson1 on-chip Counter0 (Time-Of-Year
> - counter) to be used as a RTC.
> -
> - This driver can also be built as a module. If so, the module
> - will be called rtc-ls1x.
> -
> config RTC_DRV_MXC
> tristate "Freescale MXC Real Time Clock"
> depends on ARCH_MXC || COMPILE_TEST
> diff --git a/drivers/rtc/Makefile b/drivers/rtc/Makefile
> index ea445d1ebb17..c50afd8fb9f4 100644
> --- a/drivers/rtc/Makefile
> +++ b/drivers/rtc/Makefile
> @@ -78,7 +78,6 @@ obj-$(CONFIG_RTC_DRV_ISL12022) += rtc-isl12022.o
> obj-$(CONFIG_RTC_DRV_ISL12026) += rtc-isl12026.o
> obj-$(CONFIG_RTC_DRV_ISL1208) += rtc-isl1208.o
> obj-$(CONFIG_RTC_DRV_JZ4740) += rtc-jz4740.o
> -obj-$(CONFIG_RTC_DRV_LOONGSON1) += rtc-ls1x.o
> obj-$(CONFIG_RTC_DRV_LP8788) += rtc-lp8788.o
> obj-$(CONFIG_RTC_DRV_LPC24XX) += rtc-lpc24xx.o
> obj-$(CONFIG_RTC_DRV_LPC32XX) += rtc-lpc32xx.o
> diff --git a/drivers/rtc/rtc-ls1x.c b/drivers/rtc/rtc-ls1x.c
> deleted file mode 100644
> index 5af26dc5c2a3..000000000000
> --- a/drivers/rtc/rtc-ls1x.c
> +++ /dev/null
> @@ -1,192 +0,0 @@
> -// SPDX-License-Identifier: GPL-2.0-or-later
> -/*
> - * Copyright (c) 2011 Zhao Zhang <zhzhl555@xxxxxxxxx>
> - *
> - * Derived from driver/rtc/rtc-au1xxx.c
> - */
> -
> -#include <linux/module.h>
> -#include <linux/kernel.h>
> -#include <linux/rtc.h>
> -#include <linux/init.h>
> -#include <linux/platform_device.h>
> -#include <linux/delay.h>
> -#include <linux/types.h>
> -#include <linux/io.h>
> -#include <loongson1.h>
> -
> -#define LS1X_RTC_REG_OFFSET (LS1X_RTC_BASE + 0x20)
> -#define LS1X_RTC_REGS(x) \
> - ((void __iomem *)KSEG1ADDR(LS1X_RTC_REG_OFFSET + (x)))
> -
> -/*RTC programmable counters 0 and 1*/
> -#define SYS_COUNTER_CNTRL (LS1X_RTC_REGS(0x20))
> -#define SYS_CNTRL_ERS (1 << 23)
> -#define SYS_CNTRL_RTS (1 << 20)
> -#define SYS_CNTRL_RM2 (1 << 19)
> -#define SYS_CNTRL_RM1 (1 << 18)
> -#define SYS_CNTRL_RM0 (1 << 17)
> -#define SYS_CNTRL_RS (1 << 16)
> -#define SYS_CNTRL_BP (1 << 14)
> -#define SYS_CNTRL_REN (1 << 13)
> -#define SYS_CNTRL_BRT (1 << 12)
> -#define SYS_CNTRL_TEN (1 << 11)
> -#define SYS_CNTRL_BTT (1 << 10)
> -#define SYS_CNTRL_E0 (1 << 8)
> -#define SYS_CNTRL_ETS (1 << 7)
> -#define SYS_CNTRL_32S (1 << 5)
> -#define SYS_CNTRL_TTS (1 << 4)
> -#define SYS_CNTRL_TM2 (1 << 3)
> -#define SYS_CNTRL_TM1 (1 << 2)
> -#define SYS_CNTRL_TM0 (1 << 1)
> -#define SYS_CNTRL_TS (1 << 0)
> -
> -/* Programmable Counter 0 Registers */
> -#define SYS_TOYTRIM (LS1X_RTC_REGS(0))
> -#define SYS_TOYWRITE0 (LS1X_RTC_REGS(4))
> -#define SYS_TOYWRITE1 (LS1X_RTC_REGS(8))
> -#define SYS_TOYREAD0 (LS1X_RTC_REGS(0xC))
> -#define SYS_TOYREAD1 (LS1X_RTC_REGS(0x10))
> -#define SYS_TOYMATCH0 (LS1X_RTC_REGS(0x14))
> -#define SYS_TOYMATCH1 (LS1X_RTC_REGS(0x18))
> -#define SYS_TOYMATCH2 (LS1X_RTC_REGS(0x1C))
> -
> -/* Programmable Counter 1 Registers */
> -#define SYS_RTCTRIM (LS1X_RTC_REGS(0x40))
> -#define SYS_RTCWRITE0 (LS1X_RTC_REGS(0x44))
> -#define SYS_RTCREAD0 (LS1X_RTC_REGS(0x48))
> -#define SYS_RTCMATCH0 (LS1X_RTC_REGS(0x4C))
> -#define SYS_RTCMATCH1 (LS1X_RTC_REGS(0x50))
> -#define SYS_RTCMATCH2 (LS1X_RTC_REGS(0x54))
> -
> -#define LS1X_SEC_OFFSET (4)
> -#define LS1X_MIN_OFFSET (10)
> -#define LS1X_HOUR_OFFSET (16)
> -#define LS1X_DAY_OFFSET (21)
> -#define LS1X_MONTH_OFFSET (26)
> -
> -
> -#define LS1X_SEC_MASK (0x3f)
> -#define LS1X_MIN_MASK (0x3f)
> -#define LS1X_HOUR_MASK (0x1f)
> -#define LS1X_DAY_MASK (0x1f)
> -#define LS1X_MONTH_MASK (0x3f)
> -#define LS1X_YEAR_MASK (0xffffffff)
> -
> -#define ls1x_get_sec(t) (((t) >> LS1X_SEC_OFFSET) & LS1X_SEC_MASK)
> -#define ls1x_get_min(t) (((t) >> LS1X_MIN_OFFSET) & LS1X_MIN_MASK)
> -#define ls1x_get_hour(t) (((t) >> LS1X_HOUR_OFFSET) & LS1X_HOUR_MASK)
> -#define ls1x_get_day(t) (((t) >> LS1X_DAY_OFFSET) & LS1X_DAY_MASK)
> -#define ls1x_get_month(t) (((t) >> LS1X_MONTH_OFFSET) & LS1X_MONTH_MASK)
> -
> -#define RTC_CNTR_OK (SYS_CNTRL_E0 | SYS_CNTRL_32S)
> -
> -static int ls1x_rtc_read_time(struct device *dev, struct rtc_time *rtm)
> -{
> - unsigned long v;
> - time64_t t;
> -
> - v = readl(SYS_TOYREAD0);
> - t = readl(SYS_TOYREAD1);
> -
> - memset(rtm, 0, sizeof(struct rtc_time));
> - t = mktime64((t & LS1X_YEAR_MASK), ls1x_get_month(v),
> - ls1x_get_day(v), ls1x_get_hour(v),
> - ls1x_get_min(v), ls1x_get_sec(v));
> - rtc_time64_to_tm(t, rtm);
> -
> - return 0;
> -}
> -
> -static int ls1x_rtc_set_time(struct device *dev, struct rtc_time *rtm)
> -{
> - unsigned long v, t, c;
> - int ret = -ETIMEDOUT;
> -
> - v = ((rtm->tm_mon + 1) << LS1X_MONTH_OFFSET)
> - | (rtm->tm_mday << LS1X_DAY_OFFSET)
> - | (rtm->tm_hour << LS1X_HOUR_OFFSET)
> - | (rtm->tm_min << LS1X_MIN_OFFSET)
> - | (rtm->tm_sec << LS1X_SEC_OFFSET);
> -
> - writel(v, SYS_TOYWRITE0);
> - c = 0x10000;
> - /* add timeout check counter, for more safe */
> - while ((readl(SYS_COUNTER_CNTRL) & SYS_CNTRL_TS) && --c)
> - usleep_range(1000, 3000);
> -
> - if (!c) {
> - dev_err(dev, "set time timeout!\n");
> - goto err;
> - }
> -
> - t = rtm->tm_year + 1900;
> - writel(t, SYS_TOYWRITE1);
> - c = 0x10000;
> - while ((readl(SYS_COUNTER_CNTRL) & SYS_CNTRL_TS) && --c)
> - usleep_range(1000, 3000);
> -
> - if (!c) {
> - dev_err(dev, "set time timeout!\n");
> - goto err;
> - }
> - return 0;
> -err:
> - return ret;
> -}
> -
> -static const struct rtc_class_ops ls1x_rtc_ops = {
> - .read_time = ls1x_rtc_read_time,
> - .set_time = ls1x_rtc_set_time,
> -};
> -
> -static int ls1x_rtc_probe(struct platform_device *pdev)
> -{
> - struct rtc_device *rtcdev;
> - unsigned long v;
> -
> - v = readl(SYS_COUNTER_CNTRL);
> - if (!(v & RTC_CNTR_OK)) {
> - dev_err(&pdev->dev, "rtc counters not working\n");
> - return -ENODEV;
> - }
> -
> - /* set to 1 HZ if needed */
> - if (readl(SYS_TOYTRIM) != 32767) {
> - v = 0x100000;
> - while ((readl(SYS_COUNTER_CNTRL) & SYS_CNTRL_TTS) && --v)
> - usleep_range(1000, 3000);
> -
> - if (!v) {
> - dev_err(&pdev->dev, "time out\n");
> - return -ETIMEDOUT;
> - }
> - writel(32767, SYS_TOYTRIM);
> - }
> - /* this loop coundn't be endless */
> - while (readl(SYS_COUNTER_CNTRL) & SYS_CNTRL_TTS)
> - usleep_range(1000, 3000);
> -
> - rtcdev = devm_rtc_allocate_device(&pdev->dev);
> - if (IS_ERR(rtcdev))
> - return PTR_ERR(rtcdev);
> -
> - platform_set_drvdata(pdev, rtcdev);
> - rtcdev->ops = &ls1x_rtc_ops;
> - rtcdev->range_min = RTC_TIMESTAMP_BEGIN_1900;
> - rtcdev->range_max = RTC_TIMESTAMP_END_2099;
> -
> - return devm_rtc_register_device(rtcdev);
> -}
> -
> -static struct platform_driver ls1x_rtc_driver = {
> - .driver = {
> - .name = "ls1x-rtc",
> - },
> - .probe = ls1x_rtc_probe,
> -};
> -
> -module_platform_driver(ls1x_rtc_driver);
> -
> -MODULE_AUTHOR("zhao zhang <zhzhl555@xxxxxxxxx>");
> -MODULE_LICENSE("GPL");
> --
> 2.39.1
>
--
Best regards,
Keguang Zhang
