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Wed, 2 Dec 2020 11:13:28 +0000 (GMT) Received: from eusmgms1.samsung.com (unknown [182.198.249.179]) by eusmtrp2.samsung.com (KnoxPortal) with ESMTP id 20201202111328eusmtrp2e62a86aa6cb7ea8736a49f0ddd285809~M4fTHJVss2918929189eusmtrp2g; Wed, 2 Dec 2020 11:13:28 +0000 (GMT) X-AuditID: cbfec7f5-c77ff7000000b1b0-39-5fc776d8f14f Received: from eusmtip1.samsung.com ( [203.254.199.221]) by eusmgms1.samsung.com (EUCPMTA) with SMTP id B2.CF.21957.8D677CF5; Wed, 2 Dec 2020 11:13:28 +0000 (GMT) Received: from AMDC2765.digital.local (unknown [106.120.51.73]) by eusmtip1.samsung.com (KnoxPortal) with ESMTPA id 20201202111328eusmtip145f6f2e39106641bd754b78e2c8e47ed~M4fSshUGC1196811968eusmtip1r; Wed, 2 Dec 2020 11:13:28 +0000 (GMT) From: Marek Szyprowski To: linux-rtc@vger.kernel.org, linux-samsung-soc@vger.kernel.org Cc: Marek Szyprowski , Alexandre Belloni , Alessandro Zummo , Krzysztof Kozlowski , Bartlomiej Zolnierkiewicz Subject: [PATCH 2/2] rtc: s3c: Remove dead code related to periodic tick handling Date: Wed, 2 Dec 2020 12:13:18 +0100 Message-Id: <20201202111318.5353-2-m.szyprowski@samsung.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20201202111318.5353-1-m.szyprowski@samsung.com> X-Brightmail-Tracker: H4sIAAAAAAAAA0VSWUwTURTN6wwz08biWDBeFCUh2sQNNECsG+ISLR8aFwzGRGsDY0ELQgfc iEuoayUKKKVCgqhsQqFQVokSIEDFhVZFQAJG/ChCpAERg2haGQf175xzz7kn9+VRmMSBz6ei YxMYTaxS7UuI8Jq2H9aVPSctilW1n2SyvNfvSNlVRwEpqzCY3GRWazkpayvpJGQGa4NAVtrS T4aQ8hxjktxcfJ2Q36wqRvLMnB8C+bh50W63g6INkYw6+iSj8Q8+Iorqbehxi9PvOm0eykUX UUGIDgkpoANBm5GCdEhESegiBLaaXpwn3xD0D+hInowjyKjMQ38jrpQJgh8UInA6PqB/EW16 Jcm5CHo16EZ0BIc96RCY+DXyZy9GOxA8KTVOE4ryoPdB3ns158HpJWBIe45zWExvgDJTN863 +UBJeSPG2YX0RqjtjOPWAH2XgoH+hzOebXBZpyd57AHDlqoZ7A2ux/cEfECLYKCjlORJCoK3 yYaZe9ZDX8cUwTVg9FIw1fvz8mZod5pITgbaHXpG5nAyNg3TazIxXhbDtSsS3i2FLEvZv9om 2xuMx3K4UT2B8e+TiiB7MlmQinyy/pflIlSM5jGJbIyKYQNimVN+rDKGTYxV+UWciDGj6S/x wmmZqENFw2N+zUhAoWYEFObrKcadLQqJOFJ55iyjOaHQJKoZthktoHDfeeL6aqNCQquUCcxx holjNH+nAko4/6Ig9GFo3WFFq3VR46Gg9Env/cOWq6O35BGWwIidCx/9PLB1qdgVfy/X/1TK bFYvCFPd188aDugo83C7rMgbWxzikt4Ptu9bY0Qex6xHyxOFzIe+waBv28+R0sKhBeFp+qBZ e5eXBTxd9yXV61xG9ZyXD3aJ2omPpytWfNZ8jXfPcLV7ebkG+rXanDvMcZ+67JvejsG4wu7J rbfzE0p6vxc82237uuPVR2VroUq5Zs+e5vhPa7vUl1rsRPR2Mzn6+pI9n62d6pTaztp+SVMv bGkTJ4EuoClJ+9k+O7zSlG90+kzGp20jR3uLwjZ1jZHn8xtbWscrQDh375Ubdl1g5KuuQV+c jVKuXoZpWOVvkPotGYEDAAA= X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFjrLLMWRmVeSWpSXmKPExsVy+t/xu7o3yo7HG5x8LGGx5OJVdov2d8vY LTbOWM9qcf78BnaLY6uvsFnMOL+PyWLtkbvsDuwe89ZUe2xa1cnm0bdlFaPH9Hk/mTw+b5IL YI3SsynKLy1JVcjILy6xVYo2tDDSM7S00DMysdQzNDaPtTIyVdK3s0lJzcksSy3St0vQy7i1 7wZrwTS/ik0vFzA2MC5z6GLk5JAQMJH43/OVrYuRi0NIYCmjxK197awQCRmJk9MaoGxhiT/X uqCKPjFKXFq/jBkkwSZgKNH1FiTBwSEi4CRx8HICSA2zwAdGic1/doDFhQUCJW5PLgEpZxFQ lZgx8RQLiM0rYCOxbv11Foj58hKrNxxgBinnFLCV2H6lACQsBFKy4Sf7BEa+BYwMqxhFUkuL c9Nziw31ihNzi0vz0vWS83M3MQLDdduxn5t3MM579VHvECMTB+MhRgkOZiURXpZ/R+KFeFMS K6tSi/Lji0pzUosPMZoCnTGRWUo0OR8YMXkl8YZmBqaGJmaWBqaWZsZK4rxb566JFxJITyxJ zU5NLUgtgulj4uCUamDy9O/fum3P9tPPtslu9Wis5m4u2c25aMcZz1IXjwtCva6C6kJcV3vt py3/nLHN4PdGE7ZonjVKt77ZdG1rNFjO/HTFT2kOsXC5+qy7u25PvLXMQyZxQot98/LWLTWP dqa/yNr0eVOknTrH27kh18/t7lig+Yp9+bdj55dNXO21Iu/R9/yVCR+Pz00XkP9/OGDuR+2p E96c+V5Vq/zfKGKx/6myBU8jzgu5h0jNulK8NZfd6Kxk55faWtH4/ZUr6z6tLVvxc/mz59Nv 1BsGT2U9/OtqrKy+W9SPkou7+o5/2bb69cqXFcEyDI+rjs6dvtL25U8n82X3jTcyWh9I7Ezq eZknfOLRyT8ZM+saM2tXLFFiKc5INNRiLipOBADtkFUZ4AIAAA== X-CMS-MailID: 20201202111328eucas1p1e6fff3706b790d104b76f95085dbb0c1 X-Msg-Generator: CA X-RootMTR: 20201202111328eucas1p1e6fff3706b790d104b76f95085dbb0c1 X-EPHeader: CA CMS-TYPE: 201P X-CMS-RootMailID: 20201202111328eucas1p1e6fff3706b790d104b76f95085dbb0c1 References: <20201202111318.5353-1-m.szyprowski@samsung.com> Precedence: bulk List-ID: X-Mailing-List: linux-samsung-soc@vger.kernel.org Support for periodic tick interrupts has been moved from the RTC class to the HR-timers long time ago. Then it has been removed from this driver by commits 80d4bb515b78 ("RTC: Cleanup rtc_class_ops->irq_set_state") and 696160fec162 ("RTC: Cleanup rtc_class_ops->irq_set_freq()"). They however did not remove all the code related to the tick handling. Do it now then. Signed-off-by: Marek Szyprowski --- drivers/rtc/rtc-s3c.c | 226 +----------------------------------------- 1 file changed, 2 insertions(+), 224 deletions(-) -- 2.17.1 Reviewed-by: Krzysztof Kozlowski diff --git a/drivers/rtc/rtc-s3c.c b/drivers/rtc/rtc-s3c.c index 16a326e95d46..fab326ba9cec 100644 --- a/drivers/rtc/rtc-s3c.c +++ b/drivers/rtc/rtc-s3c.c @@ -42,26 +42,15 @@ struct s3c_rtc { const struct s3c_rtc_data *data; int irq_alarm; - int irq_tick; - - spinlock_t pie_lock; spinlock_t alarm_lock; - int ticnt_save; - int ticnt_en_save; bool wake_en; }; struct s3c_rtc_data { - int max_user_freq; bool needs_src_clk; void (*irq_handler) (struct s3c_rtc *info, int mask); - void (*set_freq) (struct s3c_rtc *info, int freq); - void (*enable_tick) (struct s3c_rtc *info, struct seq_file *seq); - void (*select_tick_clk) (struct s3c_rtc *info); - void (*save_tick_cnt) (struct s3c_rtc *info); - void (*restore_tick_cnt) (struct s3c_rtc *info); void (*enable) (struct s3c_rtc *info); void (*disable) (struct s3c_rtc *info); }; @@ -91,17 +80,7 @@ static void s3c_rtc_disable_clk(struct s3c_rtc *info) clk_disable(info->rtc_clk); } -/* IRQ Handlers */ -static irqreturn_t s3c_rtc_tickirq(int irq, void *id) -{ - struct s3c_rtc *info = (struct s3c_rtc *)id; - - if (info->data->irq_handler) - info->data->irq_handler(info, S3C2410_INTP_TIC); - - return IRQ_HANDLED; -} - +/* IRQ Handler */ static irqreturn_t s3c_rtc_alarmirq(int irq, void *id) { struct s3c_rtc *info = (struct s3c_rtc *)id; @@ -148,28 +127,6 @@ static int s3c_rtc_setaie(struct device *dev, unsigned int enabled) return ret; } -/* Set RTC frequency */ -static int s3c_rtc_setfreq(struct s3c_rtc *info, int freq) -{ - int ret; - - if (!is_power_of_2(freq)) - return -EINVAL; - - ret = s3c_rtc_enable_clk(info); - if (ret) - return ret; - spin_lock_irq(&info->pie_lock); - - if (info->data->set_freq) - info->data->set_freq(info, freq); - - spin_unlock_irq(&info->pie_lock); - s3c_rtc_disable_clk(info); - - return 0; -} - /* Time read/write */ static int s3c_rtc_gettime(struct device *dev, struct rtc_time *rtc_tm) { @@ -348,29 +305,11 @@ static int s3c_rtc_setalarm(struct device *dev, struct rtc_wkalrm *alrm) return 0; } -static int s3c_rtc_proc(struct device *dev, struct seq_file *seq) -{ - struct s3c_rtc *info = dev_get_drvdata(dev); - int ret; - - ret = s3c_rtc_enable_clk(info); - if (ret) - return ret; - - if (info->data->enable_tick) - info->data->enable_tick(info, seq); - - s3c_rtc_disable_clk(info); - - return 0; -} - static const struct rtc_class_ops s3c_rtcops = { .read_time = s3c_rtc_gettime, .set_time = s3c_rtc_settime, .read_alarm = s3c_rtc_getalarm, .set_alarm = s3c_rtc_setalarm, - .proc = s3c_rtc_proc, .alarm_irq_enable = s3c_rtc_setaie, }; @@ -450,18 +389,12 @@ static int s3c_rtc_probe(struct platform_device *pdev) if (!info) return -ENOMEM; - /* find the IRQs */ - info->irq_tick = platform_get_irq(pdev, 1); - if (info->irq_tick < 0) - return info->irq_tick; - info->dev = &pdev->dev; info->data = of_device_get_match_data(&pdev->dev); if (!info->data) { dev_err(&pdev->dev, "failed getting s3c_rtc_data\n"); return -EINVAL; } - spin_lock_init(&info->pie_lock); spin_lock_init(&info->alarm_lock); platform_set_drvdata(pdev, info); @@ -470,8 +403,7 @@ static int s3c_rtc_probe(struct platform_device *pdev) if (info->irq_alarm < 0) return info->irq_alarm; - dev_dbg(&pdev->dev, "s3c2410_rtc: tick irq %d, alarm irq %d\n", - info->irq_tick, info->irq_alarm); + dev_dbg(&pdev->dev, "s3c2410_rtc: alarm irq %d\n", info->irq_alarm); /* get the memory region */ info->base = devm_platform_ioremap_resource(pdev, 0); @@ -546,18 +478,6 @@ static int s3c_rtc_probe(struct platform_device *pdev) goto err_nortc; } - ret = devm_request_irq(&pdev->dev, info->irq_tick, s3c_rtc_tickirq, - 0, "s3c2410-rtc tick", info); - if (ret) { - dev_err(&pdev->dev, "IRQ%d error %d\n", info->irq_tick, ret); - goto err_nortc; - } - - if (info->data->select_tick_clk) - info->data->select_tick_clk(info); - - s3c_rtc_setfreq(info, 1); - s3c_rtc_disable_clk(info); return 0; @@ -585,10 +505,6 @@ static int s3c_rtc_suspend(struct device *dev) if (ret) return ret; - /* save TICNT for anyone using periodic interrupts */ - if (info->data->save_tick_cnt) - info->data->save_tick_cnt(info); - if (info->data->disable) info->data->disable(info); @@ -609,9 +525,6 @@ static int s3c_rtc_resume(struct device *dev) if (info->data->enable) info->data->enable(info); - if (info->data->restore_tick_cnt) - info->data->restore_tick_cnt(info); - s3c_rtc_disable_clk(info); if (device_may_wakeup(dev) && info->wake_en) { @@ -635,162 +548,27 @@ static void s3c6410_rtc_irq(struct s3c_rtc *info, int mask) writeb(mask, info->base + S3C2410_INTP); } -static void s3c2410_rtc_setfreq(struct s3c_rtc *info, int freq) -{ - unsigned int tmp = 0; - int val; - - tmp = readb(info->base + S3C2410_TICNT); - tmp &= S3C2410_TICNT_ENABLE; - - val = (info->rtc->max_user_freq / freq) - 1; - tmp |= val; - - writel(tmp, info->base + S3C2410_TICNT); -} - -static void s3c2416_rtc_setfreq(struct s3c_rtc *info, int freq) -{ - unsigned int tmp = 0; - int val; - - tmp = readb(info->base + S3C2410_TICNT); - tmp &= S3C2410_TICNT_ENABLE; - - val = (info->rtc->max_user_freq / freq) - 1; - - tmp |= S3C2443_TICNT_PART(val); - writel(S3C2443_TICNT1_PART(val), info->base + S3C2443_TICNT1); - - writel(S3C2416_TICNT2_PART(val), info->base + S3C2416_TICNT2); - - writel(tmp, info->base + S3C2410_TICNT); -} - -static void s3c2443_rtc_setfreq(struct s3c_rtc *info, int freq) -{ - unsigned int tmp = 0; - int val; - - tmp = readb(info->base + S3C2410_TICNT); - tmp &= S3C2410_TICNT_ENABLE; - - val = (info->rtc->max_user_freq / freq) - 1; - - tmp |= S3C2443_TICNT_PART(val); - writel(S3C2443_TICNT1_PART(val), info->base + S3C2443_TICNT1); - - writel(tmp, info->base + S3C2410_TICNT); -} - -static void s3c6410_rtc_setfreq(struct s3c_rtc *info, int freq) -{ - int val; - - val = (info->rtc->max_user_freq / freq) - 1; - writel(val, info->base + S3C2410_TICNT); -} - -static void s3c24xx_rtc_enable_tick(struct s3c_rtc *info, struct seq_file *seq) -{ - unsigned int ticnt; - - ticnt = readb(info->base + S3C2410_TICNT); - ticnt &= S3C2410_TICNT_ENABLE; - - seq_printf(seq, "periodic_IRQ\t: %s\n", ticnt ? "yes" : "no"); -} - -static void s3c2416_rtc_select_tick_clk(struct s3c_rtc *info) -{ - unsigned int con; - - con = readw(info->base + S3C2410_RTCCON); - con |= S3C2443_RTCCON_TICSEL; - writew(con, info->base + S3C2410_RTCCON); -} - -static void s3c6410_rtc_enable_tick(struct s3c_rtc *info, struct seq_file *seq) -{ - unsigned int ticnt; - - ticnt = readw(info->base + S3C2410_RTCCON); - ticnt &= S3C64XX_RTCCON_TICEN; - - seq_printf(seq, "periodic_IRQ\t: %s\n", ticnt ? "yes" : "no"); -} - -static void s3c24xx_rtc_save_tick_cnt(struct s3c_rtc *info) -{ - info->ticnt_save = readb(info->base + S3C2410_TICNT); -} - -static void s3c24xx_rtc_restore_tick_cnt(struct s3c_rtc *info) -{ - writeb(info->ticnt_save, info->base + S3C2410_TICNT); -} - -static void s3c6410_rtc_save_tick_cnt(struct s3c_rtc *info) -{ - info->ticnt_en_save = readw(info->base + S3C2410_RTCCON); - info->ticnt_en_save &= S3C64XX_RTCCON_TICEN; - info->ticnt_save = readl(info->base + S3C2410_TICNT); -} - -static void s3c6410_rtc_restore_tick_cnt(struct s3c_rtc *info) -{ - unsigned int con; - - writel(info->ticnt_save, info->base + S3C2410_TICNT); - if (info->ticnt_en_save) { - con = readw(info->base + S3C2410_RTCCON); - writew(con | info->ticnt_en_save, info->base + S3C2410_RTCCON); - } -} - static struct s3c_rtc_data const s3c2410_rtc_data = { - .max_user_freq = 128, .irq_handler = s3c24xx_rtc_irq, - .set_freq = s3c2410_rtc_setfreq, - .enable_tick = s3c24xx_rtc_enable_tick, - .save_tick_cnt = s3c24xx_rtc_save_tick_cnt, - .restore_tick_cnt = s3c24xx_rtc_restore_tick_cnt, .enable = s3c24xx_rtc_enable, .disable = s3c24xx_rtc_disable, }; static struct s3c_rtc_data const s3c2416_rtc_data = { - .max_user_freq = 32768, .irq_handler = s3c24xx_rtc_irq, - .set_freq = s3c2416_rtc_setfreq, - .enable_tick = s3c24xx_rtc_enable_tick, - .select_tick_clk = s3c2416_rtc_select_tick_clk, - .save_tick_cnt = s3c24xx_rtc_save_tick_cnt, - .restore_tick_cnt = s3c24xx_rtc_restore_tick_cnt, .enable = s3c24xx_rtc_enable, .disable = s3c24xx_rtc_disable, }; static struct s3c_rtc_data const s3c2443_rtc_data = { - .max_user_freq = 32768, .irq_handler = s3c24xx_rtc_irq, - .set_freq = s3c2443_rtc_setfreq, - .enable_tick = s3c24xx_rtc_enable_tick, - .select_tick_clk = s3c2416_rtc_select_tick_clk, - .save_tick_cnt = s3c24xx_rtc_save_tick_cnt, - .restore_tick_cnt = s3c24xx_rtc_restore_tick_cnt, .enable = s3c24xx_rtc_enable, .disable = s3c24xx_rtc_disable, }; static struct s3c_rtc_data const s3c6410_rtc_data = { - .max_user_freq = 32768, .needs_src_clk = true, .irq_handler = s3c6410_rtc_irq, - .set_freq = s3c6410_rtc_setfreq, - .enable_tick = s3c6410_rtc_enable_tick, - .save_tick_cnt = s3c6410_rtc_save_tick_cnt, - .restore_tick_cnt = s3c6410_rtc_restore_tick_cnt, .enable = s3c24xx_rtc_enable, .disable = s3c6410_rtc_disable, };