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Thu, 10 Oct 2019 20:32:41 +0000 Received: from mout.kundenserver.de ([212.227.126.135]) by bombadil.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1iIf70-0002dv-OH for linux-arm-kernel@lists.infradead.org; Thu, 10 Oct 2019 20:32:40 +0000 Received: from threadripper.lan ([149.172.19.189]) by mrelayeu.kundenserver.de (mreue012 [212.227.15.129]) with ESMTPA (Nemesis) id 1MavF5-1hgJQJ1Ubb-00cNsH; Thu, 10 Oct 2019 22:32:32 +0200 From: Arnd Bergmann To: Kukjin Kim , Krzysztof Kozlowski , Kyungmin Park Subject: [PATCH 05/36] ARM: samsung: make pm-debug platform independent Date: Thu, 10 Oct 2019 22:29:49 +0200 Message-Id: <20191010203043.1241612-5-arnd@arndb.de> X-Mailer: git-send-email 2.20.0 In-Reply-To: <20191010203043.1241612-1-arnd@arndb.de> References: <20191010202802.1132272-1-arnd@arndb.de> <20191010203043.1241612-1-arnd@arndb.de> MIME-Version: 1.0 X-Provags-ID: V03:K1:tGjURh4yGInmeNo6DND3ebYdG/ni/aA/4KvW+48OCo2638uGl5x aRBbA1sQGQBdoGX6VIrs3W/Pab4eodoVviNeBCdbu4mmYUNqu2cReI05z5VODE5n+eNz9Jp NO1c/BsXmaqNGyaFY2ih1TSb2h8RSTjW2qRcaFdkUGmVUyO/YMJIfjC2Miwyt51Vp8vb1eu xrsXiyAj0MYCPsfJJmGDA== X-Spam-Flag: NO X-UI-Out-Filterresults: notjunk:1;V03:K0:f38de1Zb/nI=:St8cgUimk58V544mSRbo7L +6YzM9SmzZnxrsswusZx56XH4RfSzKFaSHrMpg68tkGlKDXCm7hsRPr1OSrYzEtfs9TP3DVpB qxz73IM3RhGbPDTy/QlRR1UiGtmyVWNtQ60oz3GRBHLKxBrOssRztfFdXFffMQ79YukX1Wivw QCqzrWvM00Z0nGI35B0XNxwPDy7lHvzktLQnN8FKd+00+DdaF02ZG0OUlaefsErAYA3uKei/M 6Y2Teq1ZjlUBVe+/iM1rBlvZBGZLcL0RE3zWkuwn+Xj7+pJuce0fIw74z0cY09F6hUW7D+UCg YnwHIyBj+nWCLyK5eZk8a3HqVzYpICFsgg5LASbVzXAMYAVzBXnSXFgkJ69lQFtezpJxX4rn9 9IzheyVP4PCa4vzxurnyM8XRbrYqLYLZnp/0Q+0w9+ETVDelrmaYdlfXtKTxnY383I0d/CKzU IEFNQCnU1oqUqhT94js1Pxv3+qa3XHrnXTRpnipJCkxqEImbuwetPtNypWuMDVD8+zuu3iTTj Sm89rp/QjQqnubgeVp49LQisVkqXLOOQJ1+8Xl1qAYk81OXFm1Wu6w2X5uVVLjWOCLj5bzfbU qyyRS/NvoEx3nvS17ae9eNBqeGCCNhvWHaO9S5ilAnEjR8XVFzIUQqs/s9iLRjrJccGdzlMSC e4iqslPGECEA5395nIlcCzptxT2028Gqfgtt27aT/ce0nvqK0ywrlSjNGwlPw50fXK58YoC3O 487/+Tkcygjgz+t8RtVoTtEse8YzOYVeo/k8UzPct28rEtYtQqZNgZSwmC3ZWAis6wR4oEj5B 5s7UWk8KA+1TeCimZ8ul1UgLUYp0R45GZ6BVIOWYJMMerx9dHN8b5+EiAlmKP7hqfnhJu8drD X6kks4sMHBTlhF46jkHA== X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20191010_133239_091048_903B33CC X-CRM114-Status: GOOD ( 22.87 ) X-Spam-Score: 0.0 (/) X-Spam-Report: SpamAssassin version 3.4.2 on bombadil.infradead.org summary: Content analysis details: (0.0 points) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 RCVD_IN_DNSWL_NONE RBL: Sender listed at https://www.dnswl.org/, no trust [212.227.126.135 listed in list.dnswl.org] 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record 0.0 SPF_NONE SPF: sender does not publish an SPF Record X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: linux-samsung-soc@vger.kernel.org, Arnd Bergmann , linus.walleij@linaro.org, linux-kernel@vger.kernel.org, Tomasz Figa , linux-arm-kernel@lists.infradead.org Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org The pm-debug code is one of the few things shared between s3c24xx/s3c64xx and the newer s5pv210. In order to make s5pv210 independent of plat-samsung, change the common bits of this code to no longer reference the s3c specific bits. Signed-off-by: Arnd Bergmann --- arch/arm/mach-s3c24xx/include/mach/pm-core.h | 7 +-- arch/arm/mach-s3c64xx/include/mach/pm-core.h | 44 +--------------- arch/arm/mach-s3c64xx/pm.c | 50 +++++++++++++++++++ arch/arm/mach-s5pv210/pm.c | 6 +-- .../arm/plat-samsung/include/plat/pm-common.h | 29 +++++------ arch/arm/plat-samsung/pm-debug.c | 23 ++------- arch/arm/plat-samsung/pm.c | 10 ++-- 7 files changed, 80 insertions(+), 89 deletions(-) diff --git a/arch/arm/mach-s3c24xx/include/mach/pm-core.h b/arch/arm/mach-s3c24xx/include/mach/pm-core.h index 5e4ce89d0158..8f87606c4cdc 100644 --- a/arch/arm/mach-s3c24xx/include/mach/pm-core.h +++ b/arch/arm/mach-s3c24xx/include/mach/pm-core.h @@ -15,6 +15,7 @@ static inline void s3c_pm_debug_init_uart(void) { +#ifdef CONFIG_SAMSUNG_PM_DEBUG unsigned long tmp = __raw_readl(S3C2410_CLKCON); /* re-start uart clocks */ @@ -24,6 +25,7 @@ static inline void s3c_pm_debug_init_uart(void) __raw_writel(tmp, S3C2410_CLKCON); udelay(10); +#endif } static inline void s3c_pm_arch_prepare_irqs(void) @@ -75,11 +77,6 @@ static inline void s3c_pm_arch_show_resume_irqs(void) s3c_irqwake_eintmask); } -static inline void s3c_pm_arch_update_uart(void __iomem *regs, - struct pm_uart_save *save) -{ -} - static inline void s3c_pm_restored_gpios(void) { } static inline void samsung_pm_saved_gpios(void) { } diff --git a/arch/arm/mach-s3c64xx/include/mach/pm-core.h b/arch/arm/mach-s3c64xx/include/mach/pm-core.h index bbf79ed28583..33cf242734a0 100644 --- a/arch/arm/mach-s3c64xx/include/mach/pm-core.h +++ b/arch/arm/mach-s3c64xx/include/mach/pm-core.h @@ -20,6 +20,7 @@ static inline void s3c_pm_debug_init_uart(void) { +#ifdef CONFIG_SAMSUNG_PM_DEBUG u32 tmp = __raw_readl(S3C_PCLK_GATE); /* As a note, since the S3C64XX UARTs generally have multiple @@ -35,6 +36,7 @@ static inline void s3c_pm_debug_init_uart(void) __raw_writel(tmp, S3C_PCLK_GATE); udelay(10); +#endif } static inline void s3c_pm_arch_prepare_irqs(void) @@ -63,48 +65,6 @@ static inline void s3c_pm_arch_show_resume_irqs(void) #define s3c_irqwake_intallow 0 #endif -static inline void s3c_pm_arch_update_uart(void __iomem *regs, - struct pm_uart_save *save) -{ - u32 ucon = __raw_readl(regs + S3C2410_UCON); - u32 ucon_clk = ucon & S3C6400_UCON_CLKMASK; - u32 save_clk = save->ucon & S3C6400_UCON_CLKMASK; - u32 new_ucon; - u32 delta; - - /* S3C64XX UART blocks only support level interrupts, so ensure that - * when we restore unused UART blocks we force the level interrupt - * settigs. */ - save->ucon |= S3C2410_UCON_TXILEVEL | S3C2410_UCON_RXILEVEL; - - /* We have a constraint on changing the clock type of the UART - * between UCLKx and PCLK, so ensure that when we restore UCON - * that the CLK field is correctly modified if the bootloader - * has changed anything. - */ - if (ucon_clk != save_clk) { - new_ucon = save->ucon; - delta = ucon_clk ^ save_clk; - - /* change from UCLKx => wrong PCLK, - * either UCLK can be tested for by a bit-test - * with UCLK0 */ - if (ucon_clk & S3C6400_UCON_UCLK0 && - !(save_clk & S3C6400_UCON_UCLK0) && - delta & S3C6400_UCON_PCLK2) { - new_ucon &= ~S3C6400_UCON_UCLK0; - } else if (delta == S3C6400_UCON_PCLK2) { - /* as an precaution, don't change from - * PCLK2 => PCLK or vice-versa */ - new_ucon ^= S3C6400_UCON_PCLK2; - } - - S3C_PMDBG("ucon change %04x => %04x (save=%04x)\n", - ucon, new_ucon, save->ucon); - save->ucon = new_ucon; - } -} - static inline void s3c_pm_restored_gpios(void) { /* ensure sleep mode has been cleared from the system */ diff --git a/arch/arm/mach-s3c64xx/pm.c b/arch/arm/mach-s3c64xx/pm.c index fd6dbb263ed5..a612e9779057 100644 --- a/arch/arm/mach-s3c64xx/pm.c +++ b/arch/arm/mach-s3c64xx/pm.c @@ -305,6 +305,56 @@ static void s3c64xx_pm_prepare(void) __raw_writel(__raw_readl(S3C64XX_WAKEUP_STAT), S3C64XX_WAKEUP_STAT); } +#ifdef CONFIG_SAMSUNG_PM_DEBUG +void s3c_pm_arch_update_uart(void __iomem *regs, struct pm_uart_save *save) +{ + u32 ucon; + u32 ucon_clk + u32 save_clk; + u32 new_ucon; + u32 delta; + + if (!soc_is_s3c64xx()) + return; + + ucon = __raw_readl(regs + S3C2410_UCON); + ucon_clk = ucon & S3C6400_UCON_CLKMASK; + sav_clk = save->ucon & S3C6400_UCON_CLKMASK; + + /* S3C64XX UART blocks only support level interrupts, so ensure that + * when we restore unused UART blocks we force the level interrupt + * settigs. */ + save->ucon |= S3C2410_UCON_TXILEVEL | S3C2410_UCON_RXILEVEL; + + /* We have a constraint on changing the clock type of the UART + * between UCLKx and PCLK, so ensure that when we restore UCON + * that the CLK field is correctly modified if the bootloader + * has changed anything. + */ + if (ucon_clk != save_clk) { + new_ucon = save->ucon; + delta = ucon_clk ^ save_clk; + + /* change from UCLKx => wrong PCLK, + * either UCLK can be tested for by a bit-test + * with UCLK0 */ + if (ucon_clk & S3C6400_UCON_UCLK0 && + !(save_clk & S3C6400_UCON_UCLK0) && + delta & S3C6400_UCON_PCLK2) { + new_ucon &= ~S3C6400_UCON_UCLK0; + } else if (delta == S3C6400_UCON_PCLK2) { + /* as an precaution, don't change from + * PCLK2 => PCLK or vice-versa */ + new_ucon ^= S3C6400_UCON_PCLK2; + } + + S3C_PMDBG("ucon change %04x => %04x (save=%04x)\n", + ucon, new_ucon, save->ucon); + save->ucon = new_ucon; + } +} +#endif + int __init s3c64xx_pm_init(void) { int i; diff --git a/arch/arm/mach-s5pv210/pm.c b/arch/arm/mach-s5pv210/pm.c index b336df0c57f3..efdb5a27c060 100644 --- a/arch/arm/mach-s5pv210/pm.c +++ b/arch/arm/mach-s5pv210/pm.c @@ -99,8 +99,6 @@ static int s5pv210_suspend_enter(suspend_state_t state) u32 eint_wakeup_mask = s5pv210_read_eint_wakeup_mask(); int ret; - s3c_pm_debug_init(); - S3C_PMDBG("%s: suspending the system...\n", __func__); S3C_PMDBG("%s: wakeup masks: %08x,%08x\n", __func__, @@ -113,7 +111,7 @@ static int s5pv210_suspend_enter(suspend_state_t state) return -EINVAL; } - s3c_pm_save_uarts(); + s3c_pm_save_uarts(false); s5pv210_pm_prepare(); flush_cache_all(); s3c_pm_check_store(); @@ -122,7 +120,7 @@ static int s5pv210_suspend_enter(suspend_state_t state) if (ret) return ret; - s3c_pm_restore_uarts(); + s3c_pm_restore_uarts(false); S3C_PMDBG("%s: wakeup stat: %08x\n", __func__, __raw_readl(S5P_WAKEUP_STAT)); diff --git a/arch/arm/plat-samsung/include/plat/pm-common.h b/arch/arm/plat-samsung/include/plat/pm-common.h index 1268bae04234..87fa97fd6e8b 100644 --- a/arch/arm/plat-samsung/include/plat/pm-common.h +++ b/arch/arm/plat-samsung/include/plat/pm-common.h @@ -69,25 +69,26 @@ struct pm_uart_save { */ extern void s3c_pm_dbg(const char *msg, ...); -/** - * s3c_pm_debug_init() - suspend/resume low level debug initialization. - * @base: Virtual base of UART to use for suspend/resume debugging. - * - * This function needs to be called before S3C_PMDBG() can be used, to set up - * UART port base address and configuration. - */ -extern void s3c_pm_debug_init(void); - #define S3C_PMDBG(fmt...) s3c_pm_dbg(fmt) -extern void s3c_pm_save_uarts(void); -extern void s3c_pm_restore_uarts(void); +extern void s3c_pm_save_uarts(bool is_s3c24xx); +extern void s3c_pm_restore_uarts(bool is_s3c24xx); + +#ifdef CONFIG_ARCH_S3C64XX +extern void s3c_pm_arch_update_uart(void __iomem *regs, + struct pm_uart_save *save); +#else +static inline void +s3c_pm_arch_update_uart(void __iomem *regs, struct pm_uart_save *save) +{ +} +#endif + #else #define S3C_PMDBG(fmt...) pr_debug(fmt) -#define s3c_pm_debug_init() do { } while (0) -static inline void s3c_pm_save_uarts(void) { } -static inline void s3c_pm_restore_uarts(void) { } +static inline void s3c_pm_save_uarts(bool is_s3c24xx) { } +static inline void s3c_pm_restore_uarts(bool is_s3c24xx) { } #endif /* suspend memory checking */ diff --git a/arch/arm/plat-samsung/pm-debug.c b/arch/arm/plat-samsung/pm-debug.c index b76b1e9ba4ae..482d53753e93 100644 --- a/arch/arm/plat-samsung/pm-debug.c +++ b/arch/arm/plat-samsung/pm-debug.c @@ -18,15 +18,6 @@ #include #include -#ifdef CONFIG_SAMSUNG_ATAGS -#include -#include -#else -static inline void s3c_pm_debug_init_uart(void) {} -static inline void s3c_pm_arch_update_uart(void __iomem *regs, - struct pm_uart_save *save) {} -#endif - static struct pm_uart_save uart_save; extern void printascii(const char *); @@ -43,12 +34,6 @@ void s3c_pm_dbg(const char *fmt, ...) printascii(buff); } -void s3c_pm_debug_init(void) -{ - /* restart uart clocks so we can use them to output */ - s3c_pm_debug_init_uart(); -} - static inline void __iomem *s3c_pm_uart_base(void) { unsigned long paddr; @@ -59,7 +44,7 @@ static inline void __iomem *s3c_pm_uart_base(void) return (void __iomem *)vaddr; } -void s3c_pm_save_uarts(void) +void s3c_pm_save_uarts(bool is_s3c2410) { void __iomem *regs = s3c_pm_uart_base(); struct pm_uart_save *save = &uart_save; @@ -70,14 +55,14 @@ void s3c_pm_save_uarts(void) save->umcon = __raw_readl(regs + S3C2410_UMCON); save->ubrdiv = __raw_readl(regs + S3C2410_UBRDIV); - if (!soc_is_s3c2410()) + if (!is_s3c2410) save->udivslot = __raw_readl(regs + S3C2443_DIVSLOT); S3C_PMDBG("UART[%p]: ULCON=%04x, UCON=%04x, UFCON=%04x, UBRDIV=%04x\n", regs, save->ulcon, save->ucon, save->ufcon, save->ubrdiv); } -void s3c_pm_restore_uarts(void) +void s3c_pm_restore_uarts(bool is_s3c2410) { void __iomem *regs = s3c_pm_uart_base(); struct pm_uart_save *save = &uart_save; @@ -90,6 +75,6 @@ void s3c_pm_restore_uarts(void) __raw_writel(save->umcon, regs + S3C2410_UMCON); __raw_writel(save->ubrdiv, regs + S3C2410_UBRDIV); - if (!soc_is_s3c2410()) + if (!is_s3c2410) __raw_writel(save->udivslot, regs + S3C2443_DIVSLOT); } diff --git a/arch/arm/plat-samsung/pm.c b/arch/arm/plat-samsung/pm.c index d6bfd66592b0..03c22a9dee21 100644 --- a/arch/arm/plat-samsung/pm.c +++ b/arch/arm/plat-samsung/pm.c @@ -25,6 +25,7 @@ #include +#include #include #include @@ -70,8 +71,7 @@ static int s3c_pm_enter(suspend_state_t state) { int ret; /* ensure the debug is initialised (if enabled) */ - - s3c_pm_debug_init(); + s3c_pm_debug_init_uart(); S3C_PMDBG("%s(%d)\n", __func__, state); @@ -100,7 +100,7 @@ static int s3c_pm_enter(suspend_state_t state) samsung_pm_saved_gpios(); } - s3c_pm_save_uarts(); + s3c_pm_save_uarts(soc_is_s3c2410()); s3c_pm_save_core(); /* set the irq configuration for wake */ @@ -137,14 +137,14 @@ static int s3c_pm_enter(suspend_state_t state) /* restore the system state */ s3c_pm_restore_core(); - s3c_pm_restore_uarts(); + s3c_pm_restore_uarts(soc_is_s3c2410()); if (!of_have_populated_dt()) { samsung_pm_restore_gpios(); s3c_pm_restored_gpios(); } - s3c_pm_debug_init(); + s3c_pm_debug_init_uart(); /* check what irq (if any) restored the system */