From patchwork Tue May 24 13:30:32 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: fu.wei@linaro.org X-Patchwork-Id: 9133647 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 87622607D5 for ; Tue, 24 May 2016 13:33:37 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 79F8C2821B for ; Tue, 24 May 2016 13:33:37 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 6E41B2829A; Tue, 24 May 2016 13:33:37 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-4.2 required=2.0 tests=BAYES_00, RCVD_IN_DNSWL_MED autolearn=unavailable version=3.3.1 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.9]) (using TLSv1.2 with cipher AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 16A6D2821B for ; Tue, 24 May 2016 13:33:37 +0000 (UTC) Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1b5CRS-0007mI-SC; Tue, 24 May 2016 13:32:14 +0000 Received: from mx1.redhat.com ([209.132.183.28]) by bombadil.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1b5CR6-0007HC-3y for linux-arm-kernel@lists.infradead.org; Tue, 24 May 2016 13:31:54 +0000 Received: from int-mx14.intmail.prod.int.phx2.redhat.com (int-mx14.intmail.prod.int.phx2.redhat.com [10.5.11.27]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id F174178229; Tue, 24 May 2016 13:31:31 +0000 (UTC) Received: from magi-f23.redhat.com (vpn1-7-183.pek2.redhat.com [10.72.7.183]) by int-mx14.intmail.prod.int.phx2.redhat.com (8.14.4/8.14.4) with ESMTP id u4ODUf9v015249; Tue, 24 May 2016 09:31:23 -0400 From: fu.wei@linaro.org To: rjw@rjwysocki.net, lenb@kernel.org, daniel.lezcano@linaro.org, tglx@linutronix.de, marc.zyngier@arm.com, hanjun.guo@linaro.org Subject: [PATCH v5 5/6] clocksource/drivers/arm_arch_timer: Simplify ACPI support code. Date: Tue, 24 May 2016 21:30:32 +0800 Message-Id: <1464096633-9309-6-git-send-email-fu.wei@linaro.org> In-Reply-To: <1464096633-9309-1-git-send-email-fu.wei@linaro.org> References: <1464096633-9309-1-git-send-email-fu.wei@linaro.org> X-Scanned-By: MIMEDefang 2.68 on 10.5.11.27 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.28]); Tue, 24 May 2016 13:31:32 +0000 (UTC) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20160524_063152_390116_9282D10A X-CRM114-Status: GOOD ( 12.96 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: wei@redhat.com, harba@codeaurora.org, Fu Wei , al.stone@linaro.org, graeme.gregory@linaro.org, linaro-acpi@lists.linaro.org, jcm@redhat.com, timur@codeaurora.org, will.deacon@arm.com, rruigrok@codeaurora.org, linux-kernel@vger.kernel.org, linux-acpi@vger.kernel.org, wim@iguana.be, arnd@arndb.de, cov@codeaurora.org, Suravee.Suthikulpanit@amd.com, catalin.marinas@arm.com, leo.duran@amd.com, linux-arm-kernel@lists.infradead.org MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Virus-Scanned: ClamAV using ClamSMTP From: Fu Wei The patch update arm_arch_timer driver to use the function provided by the new GTDT driver of ACPI. By this way, arm_arch_timer.c can be simplified, and separate all the ACPI GTDT knowledge from this timer driver. Signed-off-by: Fu Wei Signed-off-by: Hanjun Guo --- drivers/clocksource/Kconfig | 1 + drivers/clocksource/arm_arch_timer.c | 45 ++++-------------------------------- 2 files changed, 6 insertions(+), 40 deletions(-) diff --git a/drivers/clocksource/Kconfig b/drivers/clocksource/Kconfig index 47352d2..5a5baa1 100644 --- a/drivers/clocksource/Kconfig +++ b/drivers/clocksource/Kconfig @@ -8,6 +8,7 @@ config CLKSRC_OF config CLKSRC_ACPI bool select CLKSRC_PROBE + select ACPI_GTDT config CLKSRC_PROBE bool diff --git a/drivers/clocksource/arm_arch_timer.c b/drivers/clocksource/arm_arch_timer.c index 9540e9d..505e65c 100644 --- a/drivers/clocksource/arm_arch_timer.c +++ b/drivers/clocksource/arm_arch_timer.c @@ -848,60 +848,25 @@ out: CLOCKSOURCE_OF_DECLARE(armv7_arch_timer_mem, "arm,armv7-timer-mem", arch_timer_mem_init); -#ifdef CONFIG_ACPI -static int __init map_generic_timer_interrupt(u32 interrupt, u32 flags) -{ - int trigger, polarity; - - if (!interrupt) - return 0; - - trigger = (flags & ACPI_GTDT_INTERRUPT_MODE) ? ACPI_EDGE_SENSITIVE - : ACPI_LEVEL_SENSITIVE; - - polarity = (flags & ACPI_GTDT_INTERRUPT_POLARITY) ? ACPI_ACTIVE_LOW - : ACPI_ACTIVE_HIGH; - - return acpi_register_gsi(NULL, interrupt, trigger, polarity); -} - +#ifdef CONFIG_ACPI_GTDT /* Initialize per-processor generic timer */ static int __init arch_timer_acpi_init(struct acpi_table_header *table) { - struct acpi_table_gtdt *gtdt; - if (arch_timers_present & ARCH_CP15_TIMER) { pr_warn("already initialized, skipping\n"); return -EINVAL; } - gtdt = container_of(table, struct acpi_table_gtdt, header); - arch_timers_present |= ARCH_CP15_TIMER; - arch_timer_ppi[PHYS_SECURE_PPI] = - map_generic_timer_interrupt(gtdt->secure_el1_interrupt, - gtdt->secure_el1_flags); - - arch_timer_ppi[PHYS_NONSECURE_PPI] = - map_generic_timer_interrupt(gtdt->non_secure_el1_interrupt, - gtdt->non_secure_el1_flags); - - arch_timer_ppi[VIRT_PPI] = - map_generic_timer_interrupt(gtdt->virtual_timer_interrupt, - gtdt->virtual_timer_flags); - - arch_timer_ppi[HYP_PPI] = - map_generic_timer_interrupt(gtdt->non_secure_el2_interrupt, - gtdt->non_secure_el2_flags); + if (gtdt_arch_timer_init(table, arch_timer_ppi, &arch_timer_c3stop, + NULL)) + return -EINVAL; /* Get the frequency from CNTFRQ */ arch_timer_detect_rate(NULL, NULL); - - /* Always-on capability */ - arch_timer_c3stop = !(gtdt->non_secure_el1_flags & ACPI_GTDT_ALWAYS_ON); - arch_timer_init(); + return 0; } CLOCKSOURCE_ACPI_DECLARE(arch_timer, ACPI_SIG_GTDT, arch_timer_acpi_init);