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Thu, 15 May 2025 08:03:05 +0000 (GMT) X-AuditID: b6c32a28-edfbf24000001e8a-61-68259fb92c1e Received: from epsmtip2.samsung.com ( [182.195.34.31]) by epsmgmc1p1new.samsung.com (Symantec Messaging Gateway) with SMTP id 06.C6.07818.9BF95286; Thu, 15 May 2025 17:03:05 +0900 (KST) Received: from localhost.localdomain (unknown [10.229.9.126]) by epsmtip2.samsung.com (KnoxPortal) with ESMTPA id 20250515080305epsmtip2160d2a09d0e53fdf3e15513c5ad463f6~-pJ9_fQdi1287712877epsmtip2V; Thu, 15 May 2025 08:03:05 +0000 (GMT) From: Sangwook Shin To: krzk@kernel.org, alim.akhtar@samsung.com, wim@linux-watchdog.org, linux@roeck-us.net Cc: linux-arm-kernel@lists.infradead.org, linux-samsung-soc@vger.kernel.org, linux-watchdog@vger.kernel.org, linux-kernel@vger.kernel.org, Sangwook Shin Subject: [PATCH v3 1/5] watchdog: s3c2410_wdt: Replace hardcoded values with macro definitions Date: Thu, 15 May 2025 16:53:46 +0900 Message-Id: <20250515075350.3368635-2-sw617.shin@samsung.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20250515075350.3368635-1-sw617.shin@samsung.com> Precedence: bulk X-Mailing-List: linux-samsung-soc@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFrrCLMWRmVeSWpSXmKPExsWy7bCSvO7O+aoZBmc/KVo8mLeNzeL8+Q3s FpseX2O1uLxrDpvFjPP7mCxurNvHbvFk4RkmixmLT7JZPH75j9mB02PTqk42j5Vr1rB6bF5S 77HzewO7R9+WVYwenzfJBbBFcdmkpOZklqUW6dslcGXMejKTreAAe8XqlaeZGhgXsXUxcnJI CJhIXLxwnx3EFhLYzSjxfrt0FyMHUFxK4t0zS4gSYYn7LUdYuxi5gEo+MEpcWf2eESTBJqAj Mf3fbRYQW0QgTuJY+2ZmkCJmgZ2MEi3TfzODJISBEuvf7AYrYhFQlWh49h9sGa+ArcTum2vZ ITbIS8y89B3M5hSwk5h4cRcjxEG2Eof3PGGDqBeUODnzCdgcZqD65q2zmScwCsxCkpqFJLWA kWkVo2RqQXFuem6yYYFhXmq5XnFibnFpXrpecn7uJkZwwGtp7GB8961J/xAjEwfjIUYJDmYl Ed7rWcoZQrwpiZVVqUX58UWlOanFhxilOViUxHlXGkakCwmkJ5akZqemFqQWwWSZODilGpis iqe/zHr6tnOLrIuAHK/Gtc6/fHqyHUd1X6dddj5sFSH3pU/7j7flt/V2fvb/TGoCQzqvXOGT ex2+hv3xnd1tuewcRjN+9P7Ojuyx+Zez2uz0Ql6dlKvhohkvf88RWqTW2rtvn4HDfYWY5VES cclfJz7NmJO84PQ2z52Gq9a5bLC6YqxXtEPh5C+FdZOP3YpP33H+r/7bBZPsdq6///t1nZz3 n8CXEsknwy/b7Lz/i+XQJL77gnOmHuC/euvaXf4doccua0r4MN5ue+pYkTvX8HbGzxvz0jdP rY173qK6giHCVUrmYEOhwcLID6cvfnKrebCTkyNcfWLizRO6GQ5zn/aa1rrPqZ1UL3Ox6Plv JZbijERDLeai4kQAYiq1XOcCAAA= X-CMS-MailID: 20250515080305epcas2p4fa47dbfe9c4ece7c40eb04ea4c37c386 X-Msg-Generator: CA X-Sendblock-Type: AUTO_CONFIDENTIAL CMS-TYPE: 102P cpgsPolicy: CPGSC10-234,N X-CFilter-Loop: Reflected X-CMS-RootMailID: 20250515080305epcas2p4fa47dbfe9c4ece7c40eb04ea4c37c386 References: <20250515075350.3368635-1-sw617.shin@samsung.com> Modify the code to utilize macro-defined values instead of hardcoded values. The value 0x100 in the s3c2410wdt_set_heartbeat function represents S3C2410_WTCON_PRESCALE_MAX + 1, but it is hardcoded, making its meaning difficult to understand and reducing code readability. Signed-off-by: Sangwook Shin --- drivers/watchdog/s3c2410_wdt.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/watchdog/s3c2410_wdt.c b/drivers/watchdog/s3c2410_wdt.c index bdd81d8074b2..228f86d83663 100644 --- a/drivers/watchdog/s3c2410_wdt.c +++ b/drivers/watchdog/s3c2410_wdt.c @@ -555,7 +555,7 @@ static int s3c2410wdt_set_heartbeat(struct watchdog_device *wdd, if (count >= 0x10000) { divisor = DIV_ROUND_UP(count, 0xffff); - if (divisor > 0x100) { + if (divisor > S3C2410_WTCON_PRESCALE_MAX + 1) { dev_err(wdt->dev, "timeout %d too big\n", timeout); return -EINVAL; } From patchwork Thu May 15 07:53:47 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sangwook Shin X-Patchwork-Id: 890531 Received: from mailout1.samsung.com (mailout1.samsung.com [203.254.224.24]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 8ED1428643D for ; 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Thu, 15 May 2025 08:03:06 +0000 (GMT) From: Sangwook Shin To: krzk@kernel.org, alim.akhtar@samsung.com, wim@linux-watchdog.org, linux@roeck-us.net Cc: linux-arm-kernel@lists.infradead.org, linux-samsung-soc@vger.kernel.org, linux-watchdog@vger.kernel.org, linux-kernel@vger.kernel.org, Sangwook Shin Subject: [PATCH v3 2/5] watchdog: s3c2410_wdt: Fix max_timeout being calculated larger Date: Thu, 15 May 2025 16:53:47 +0900 Message-Id: <20250515075350.3368635-3-sw617.shin@samsung.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20250515075350.3368635-1-sw617.shin@samsung.com> Precedence: bulk X-Mailing-List: linux-samsung-soc@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFrrILMWRmVeSWpSXmKPExsWy7bCSvO6u+aoZBt27rCwezNvGZnH+/AZ2 i02Pr7FaXN41h81ixvl9TBY31u1jt3iy8AyTxYzFJ9ksHr/8x+zA6bFpVSebx8o1a1g9Ni+p 99j5vYHdo2/LKkaPz5vkAtiiuGxSUnMyy1KL9O0SuDK27O9jL/jJWbH30l+2BsbNHF2MnBwS AiYS/fvfs3cxcnEICWxnlDg+4wtLFyMHUEJK4t0zS4gaYYn7LUdYIWo+MEqsONDICpJgE9CR mP7vNguILSIQJ3GsfTMzSBGzwE5GiZbpv5lBEsICYRK3Lq8As1kEVCWW7ZsM1sArYCux88FF dogN8hIzL30HszkF7CQmXtzFCGILAdUc3vOEDaJeUOLkzCdgvcxA9c1bZzNPYBSYhSQ1C0lq ASPTKkbR1ILi3PTc5AJDveLE3OLSvHS95PzcTYzgUNcK2sG4bP1fvUOMTByMhxglOJiVRHiv ZylnCPGmJFZWpRblxxeV5qQWH2KU5mBREudVzulMERJITyxJzU5NLUgtgskycXBKNTDNK62y DjtnEva3/WXNsnsbit6uSXE5I+zxKMJnfvWNsJLe/Q/C8uuEpbakbptbyL28yPq1zmn9qMgX AjcFrnzXaJdfeerdzqMM5Y9TX4bycSezqfQs8VeM4THyCdv9KdDrWcwvj8jZS1XibB/OzPdg yPx+asW6XQvE5P+sv1+zrbNA5+mZogYRQYHwd5f2LJ5fGi8Vodcy2fb+cplt6yo2ZbEu++ls ekaogKVdwn5vvG5LOueG6b2bCh49Xzf3TnfGqm3istfiQowO7NZjnhq/vkROMEC+6S7PDIUz m5Y+3Z0Ta9Z7xe3U5YcPPGRvOH4xiujxPez/qy74pnhLWH5H46Ka3bXR71d/P1Vs1K7EUpyR aKjFXFScCABlPnLY5AIAAA== X-CMS-MailID: 20250515080307epcas2p2898fb938ccf5c9a43d3f58098982dbdd X-Msg-Generator: CA X-Sendblock-Type: AUTO_CONFIDENTIAL CMS-TYPE: 102P cpgsPolicy: CPGSC10-234,N X-CFilter-Loop: Reflected X-CMS-RootMailID: 20250515080307epcas2p2898fb938ccf5c9a43d3f58098982dbdd References: <20250515075350.3368635-1-sw617.shin@samsung.com> Fix the issue of max_timeout being calculated larger than actual value. The calculation result of freq / (S3C2410_WTCON_PRESCALE_MAX + 1) / S3C2410_WTCON_MAXDIV is smaller than the actual value because the remainder is discarded during the calculation process. This leads to a larger calculated value for max_timeout compared to the actual settable value. A ceiling operation is applied in the calculation process to resolve this. Signed-off-by: Sangwook Shin --- drivers/watchdog/s3c2410_wdt.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/watchdog/s3c2410_wdt.c b/drivers/watchdog/s3c2410_wdt.c index 228f86d83663..c6166d927155 100644 --- a/drivers/watchdog/s3c2410_wdt.c +++ b/drivers/watchdog/s3c2410_wdt.c @@ -379,8 +379,8 @@ static inline unsigned int s3c2410wdt_max_timeout(struct s3c2410_wdt *wdt) { const unsigned long freq = s3c2410wdt_get_freq(wdt); - return S3C2410_WTCNT_MAXCNT / (freq / (S3C2410_WTCON_PRESCALE_MAX + 1) - / S3C2410_WTCON_MAXDIV); + return S3C2410_WTCNT_MAXCNT / DIV_ROUND_UP(freq, + (S3C2410_WTCON_PRESCALE_MAX + 1) * S3C2410_WTCON_MAXDIV); } static int s3c2410wdt_disable_wdt_reset(struct s3c2410_wdt *wdt, bool mask) From patchwork Thu May 15 07:53:50 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sangwook Shin X-Patchwork-Id: 890530 Received: from mailout3.samsung.com (mailout3.samsung.com [203.254.224.33]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id D81BE283FD6 for ; 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Thu, 15 May 2025 08:03:10 +0000 (GMT) From: Sangwook Shin To: krzk@kernel.org, alim.akhtar@samsung.com, wim@linux-watchdog.org, linux@roeck-us.net Cc: linux-arm-kernel@lists.infradead.org, linux-samsung-soc@vger.kernel.org, linux-watchdog@vger.kernel.org, linux-kernel@vger.kernel.org, Sangwook Shin Subject: [PATCH v3 5/5] watchdog: s3c2410_wdt: exynosautov9: Enable supported features Date: Thu, 15 May 2025 16:53:50 +0900 Message-Id: <20250515075350.3368635-6-sw617.shin@samsung.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20250515075350.3368635-1-sw617.shin@samsung.com> Precedence: bulk X-Mailing-List: linux-samsung-soc@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFrrALMWRmVeSWpSXmKPExsWy7bCSvO6++aoZBscvCVk8mLeNzeL8+Q3s FpseX2O1uLxrDpvFjPP7mCxurNvHbvFk4RkmixmLT7JZPH75j9mB02PTqk42j5Vr1rB6bF5S 77HzewO7R9+WVYwenzfJBbBFcdmkpOZklqUW6dslcGVMfTObpeA9V8Xe263MDYwLOLsYOTkk BEwkmt9sZ+xi5OIQEtjOKLFp8R32LkYOoISUxLtnlhA1whL3W46wQtR8YJT41PWfESTBJqAj Mf3fbRYQW0QgTuJY+2ZmkCJmgZ2MEi3TfzODJIQFwiRevP/LBGKzCKhK/Nl0gBlkAa+ArcSy WXUQC+QlZl76zg5icwrYSUy8uAtsvhBQyeE9T9hAbF4BQYmTM5+A7WIGqm/eOpt5AqPALCSp WUhSCxiZVjGKphYU56bnJhcY6hUn5haX5qXrJefnbmIEB7pW0A7GZev/6h1iZOJgPMQowcGs JMJ7PUs5Q4g3JbGyKrUoP76oNCe1+BCjNAeLkjivck5nipBAemJJanZqakFqEUyWiYNTqoFp cX9q4vrq1qslwjMnr5nH0f+S92yvjdIK8yb2AwdEn6zOvcffNKWi7mi18LsnLcdCY16nB93m q+TeqrrQPYNtpeUkG2bhjaxBLq8vaH9ZUn8j2u3dLPa1f1mEQ/RsFyjMmTzrz+Krtz5s8Fq+ Sv2nbeWeekO1Ei13TYPO2gOCmtfeGG5nsPv/MdiAU9JelkVk4k2e0xnNV2eHJvbeSeR8ev38 lnMfQn7t/s7ZZvWYlzOzytSaN3PN/HX77H9xhsiovp+tv9f6eJOZVWYA06z4Z2t4p2esvFav t9Kw8KDW7UUuxreWqRzoFnnc48RyueNzweYLf8t4p6lsfBE06Yip8Ob911oi5pw5fzzvGPde JZbijERDLeai4kQAlpDYcuMCAAA= X-CMS-MailID: 20250515080310epcas2p3e045327d03d031d38614464e881957d1 X-Msg-Generator: CA X-Sendblock-Type: AUTO_CONFIDENTIAL CMS-TYPE: 102P cpgsPolicy: CPGSC10-234,N X-CFilter-Loop: Reflected X-CMS-RootMailID: 20250515080310epcas2p3e045327d03d031d38614464e881957d1 References: <20250515075350.3368635-1-sw617.shin@samsung.com> Enable supported features for ExynosAutov9 SoC. - QUIRK_HAS_DBGACK_BIT - QUIRK_HAS_32BIT_MAXCNT Signed-off-by: Sangwook Shin --- drivers/watchdog/s3c2410_wdt.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/drivers/watchdog/s3c2410_wdt.c b/drivers/watchdog/s3c2410_wdt.c index 3c12a3ae50f8..bbc1d9916f67 100644 --- a/drivers/watchdog/s3c2410_wdt.c +++ b/drivers/watchdog/s3c2410_wdt.c @@ -275,7 +275,8 @@ static const struct s3c2410_wdt_variant drv_data_exynosautov9_cl0 = { .cnt_en_reg = EXYNOS850_CLUSTER0_NONCPU_OUT, .cnt_en_bit = 7, .quirks = QUIRK_HAS_WTCLRINT_REG | QUIRK_HAS_PMU_MASK_RESET | - QUIRK_HAS_PMU_RST_STAT | QUIRK_HAS_PMU_CNT_EN, + QUIRK_HAS_PMU_RST_STAT | QUIRK_HAS_PMU_CNT_EN | + QUIRK_HAS_DBGACK_BIT | QUIRK_HAS_32BIT_MAXCNT, }; static const struct s3c2410_wdt_variant drv_data_exynosautov9_cl1 = { @@ -287,7 +288,8 @@ static const struct s3c2410_wdt_variant drv_data_exynosautov9_cl1 = { .cnt_en_reg = EXYNOSAUTOV9_CLUSTER1_NONCPU_OUT, .cnt_en_bit = 7, .quirks = QUIRK_HAS_WTCLRINT_REG | QUIRK_HAS_PMU_MASK_RESET | - QUIRK_HAS_PMU_RST_STAT | QUIRK_HAS_PMU_CNT_EN, + QUIRK_HAS_PMU_RST_STAT | QUIRK_HAS_PMU_CNT_EN | + QUIRK_HAS_DBGACK_BIT | QUIRK_HAS_32BIT_MAXCNT, }; static const struct s3c2410_wdt_variant drv_data_gs101_cl0 = {