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[2604:1380:45d1:ec00::1]) by mx.google.com with ESMTPS id d8-20020ac85ac8000000b0042f2531b600si2046255qtd.494.2024.03.09.10.21.27 for (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 09 Mar 2024 10:21:27 -0800 (PST) Received-SPF: pass (google.com: domain of linux-kernel+bounces-97992-linux.lists.archive=gmail.com@vger.kernel.org designates 2604:1380:45d1:ec00::1 as permitted sender) client-ip=2604:1380:45d1:ec00::1; Authentication-Results: mx.google.com; dkim=pass header.i=@kernel.org header.s=k20201202 header.b=gi1tlyhZ; arc=pass (i=1 dkim=pass dkdomain=kernel.org); spf=pass (google.com: domain of linux-kernel+bounces-97992-linux.lists.archive=gmail.com@vger.kernel.org designates 2604:1380:45d1:ec00::1 as permitted sender) smtp.mailfrom="linux-kernel+bounces-97992-linux.lists.archive=gmail.com@vger.kernel.org"; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=kernel.org Received: from smtp.subspace.kernel.org (wormhole.subspace.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ny.mirrors.kernel.org (Postfix) with ESMTPS id 19A0B1C21594 for ; Sat, 9 Mar 2024 18:21:27 +0000 (UTC) Received: from localhost.localdomain (localhost.localdomain [127.0.0.1]) by smtp.subspace.kernel.org (Postfix) with ESMTP id F38EB605C1; Sat, 9 Mar 2024 18:15:59 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="gi1tlyhZ" Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 B89C9482F2; Sat, 9 Mar 2024 18:15:49 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1710008149; cv=none; b=PCq0W9cWwkREvTODWj651lrymdGAZvYWRM9yCcyiWTj6tqY8GEbZfgB7Iq20Qu3NTVtPs4DGDaBVsh6URFGgyQcuxsLiOgxm8bYl6+8ePOZ29XkK+4Y7QIM35G8fA+ZUN6udaWA8QjNkbLyISbCl+qIr+k7/fhmzAUy71ipf1ZE= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1710008149; c=relaxed/simple; bh=ccnZgOwY1jkyca6OhwzD6VymL5dCHHkW+dD8YxfUWbw=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=I2YhS1g+BrEaDP1t5/tHiZ6W8k1JGcv6kGz9QIsn3SbBbMTA04cv1vwMOm5SODDUMku8S9Hj17dhpHPxiciyuVkrERq9RqqxqbU0xxb/XAS98ldxzh3hEYlr+M4I4fTnFxlL/m12jZgOoLSooVh8DfyKfCX3sxr+LchNF+SDhnY= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=gi1tlyhZ; arc=none smtp.client-ip=10.30.226.201 Received: by smtp.kernel.org (Postfix) with ESMTPS id 99BE2C32786; Sat, 9 Mar 2024 18:15:49 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1710008149; bh=ccnZgOwY1jkyca6OhwzD6VymL5dCHHkW+dD8YxfUWbw=; h=From:Date:Subject:References:In-Reply-To:To:Cc:Reply-To:From; b=gi1tlyhZ1isfM+haYAjTR5aLVqgxM4B2YwaM5GTikHCYwoeFNAx8aH7U7qwONASi+ Vk9eSWWbOXO9bvNjljbdFelKyIBjF+4oe+Jg24/jS7x48KeC5rUsnKAuDDwY2vvYZs 3QOqTw/s3eZ3qKReCt77wsAispEiLEhAgbZYtGR2UIVDN2XZnuwQEMxYkcXEDCJdft FbZ1OQ8WUENKN2vKafsFT7WCT7Gn1/oKhmPPbandxnc0Ou1LFNDqybn5vt+Of35kKu /0F7Owpb1LcTpICi9YQU2bGiQR2byc/i1BVHspFxcnx+Ttp0ZU75kIVd9L/YJER0Mw b/j0FCwAKtKJA== Received: from aws-us-west-2-korg-lkml-1.web.codeaurora.org (localhost.localdomain [127.0.0.1]) by smtp.lore.kernel.org (Postfix) with ESMTP id 8AB71C54E60; Sat, 9 Mar 2024 18:15:49 +0000 (UTC) From: Sam Ravnborg via B4 Relay Date: Sat, 09 Mar 2024 19:15:37 +0100 Subject: [PATCH v2 16/28] sparc32: Drop use of sparc_config Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-Id: <20240309-sunset-v2-16-f09912574d2c@ravnborg.org> References: <20240309-sunset-v2-0-f09912574d2c@ravnborg.org> In-Reply-To: <20240309-sunset-v2-0-f09912574d2c@ravnborg.org> To: "David S. Miller" , Arnd Bergmann , Andreas Larsson Cc: Helge Deller , Randy Dunlap , John Paul Adrian Glaubitz , Mark Cave-Ayland , Kjetil Oftedal , Thomas Zimmermann , Alexander Viro , Greg Kroah-Hartman , Alan Stern , Jaroslav Kysela , Takashi Iwai , sparclinux@vger.kernel.org, linux-kernel@vger.kernel.org, linux-usb@vger.kernel.org, linux-fbdev@vger.kernel.org, dri-devel@lists.freedesktop.org, linux-sound@vger.kernel.org, Sam Ravnborg X-Mailer: b4 0.12.4 X-Developer-Signature: v=1; a=ed25519-sha256; t=1710008145; l=12323; i=sam@ravnborg.org; s=20230107; h=from:subject:message-id; bh=3BhApwMXzvQRblfivTnthdg/BJ1WNfDQm/+oYxhgcG0=; =?utf-8?q?b=3DCEYh6Q/CTzTZ?= =?utf-8?q?GWrQj3PHlVCYJwCgY7l1w8JGUcNed3SAKDXH8lwkjZcJN65IIkwFFKU7Q9wOafhR?= ZTV8XR6MDLJ59obPswBz3G8vckWlT8wAPjtBbN9ldMuSRP9+H479 X-Developer-Key: i=sam@ravnborg.org; a=ed25519; pk=R0+pqV7BRYOAeOIGkyOrSNke7arx5y3LkEuNi37YEyU= X-Endpoint-Received: by B4 Relay for sam@ravnborg.org/20230107 with auth_id=22 X-Original-From: Sam Ravnborg Reply-To: From: Sam Ravnborg sparc_config were used to handle the differences between the machines. With only LEON supported sparc_config is no longer required. Refactor the time code a litte as some parts are obsolete and other parts are only used when SMP is not enabled. Signed-off-by: Sam Ravnborg Acked-by: Arnd Bergmann Cc: Sam Ravnborg Cc: Arnd Bergmann Cc: Andreas Larsson --- arch/sparc/include/asm/timer_32.h | 1 + arch/sparc/kernel/irq.h | 37 +++------------------- arch/sparc/kernel/irq_32.c | 3 -- arch/sparc/kernel/leon_kernel.c | 27 +++-------------- arch/sparc/kernel/of_device_32.c | 4 +-- arch/sparc/kernel/time_32.c | 64 +++++++++++++-------------------------- 6 files changed, 33 insertions(+), 103 deletions(-) diff --git a/arch/sparc/include/asm/timer_32.h b/arch/sparc/include/asm/timer_32.h index eecd2696922d..1cd89a99966f 100644 --- a/arch/sparc/include/asm/timer_32.h +++ b/arch/sparc/include/asm/timer_32.h @@ -17,6 +17,7 @@ #include /* For SUN4M_NCPUS */ #define SBUS_CLOCK_RATE 2000000 /* 2MHz */ +#define LEON_CLOCK_RATE 1000000 #define TIMER_VALUE_SHIFT 9 #define TIMER_VALUE_MASK 0x3fffff #define TIMER_LIMIT_BIT (1 << 31) /* Bit 31 in Counter-Timer register */ diff --git a/arch/sparc/kernel/irq.h b/arch/sparc/kernel/irq.h index 0d9b740725b4..8a0b314c8299 100644 --- a/arch/sparc/kernel/irq.h +++ b/arch/sparc/kernel/irq.h @@ -44,38 +44,6 @@ struct sun4m_irq_global { extern struct sun4m_irq_percpu __iomem *sun4m_irq_percpu[SUN4M_NCPUS]; extern struct sun4m_irq_global __iomem *sun4m_irq_global; -/* The following definitions describe the individual platform features: */ -#define FEAT_L10_CLOCKSOURCE (1 << 0) /* L10 timer is used as a clocksource */ -#define FEAT_L10_CLOCKEVENT (1 << 1) /* L10 timer is used as a clockevent */ -#define FEAT_L14_ONESHOT (1 << 2) /* L14 timer clockevent can oneshot */ - -/* - * Platform specific configuration - * The individual platforms assign their platform - * specifics in their init functions. - */ -struct sparc_config { - void (*init_timers)(void); - unsigned int (*build_device_irq)(struct platform_device *op, - unsigned int real_irq); - - /* generic clockevent features - see FEAT_* above */ - int features; - - /* clock rate used for clock event timer */ - int clock_rate; - - /* one period for clock source timer */ - unsigned int cs_period; - - /* function to obtain offsett for cs period */ - unsigned int (*get_cycles_offset)(void); - - void (*clear_clock_irq)(void); - void (*load_profile_irq)(int cpu, unsigned int limit); -}; -extern struct sparc_config sparc_config; - unsigned int irq_alloc(unsigned int real_irq, unsigned int pil); void irq_link(unsigned int irq); void irq_unlink(unsigned int irq); @@ -89,6 +57,11 @@ void sun4m_nmi(struct pt_regs *regs); /* sun4d_irq.c */ void sun4d_handler_irq(unsigned int pil, struct pt_regs *regs); +/* leon_kernel.c */ +void leon_clear_clock_irq(void); +void leon_load_profile_irq(int cpu, unsigned int limit); +u32 leon_cycles_offset(void); + #ifdef CONFIG_SMP /* All SUN4D IPIs are sent on this IRQ, may be shared with hard IRQs */ diff --git a/arch/sparc/kernel/irq_32.c b/arch/sparc/kernel/irq_32.c index a6af08fce796..f76f57073323 100644 --- a/arch/sparc/kernel/irq_32.c +++ b/arch/sparc/kernel/irq_32.c @@ -24,9 +24,6 @@ #include "kernel.h" #include "irq.h" -/* platform specific irq setup */ -struct sparc_config sparc_config; - unsigned long arch_local_irq_save(void) { unsigned long retval; diff --git a/arch/sparc/kernel/leon_kernel.c b/arch/sparc/kernel/leon_kernel.c index ea04bad6a118..fa9cdaffdc6b 100644 --- a/arch/sparc/kernel/leon_kernel.c +++ b/arch/sparc/kernel/leon_kernel.c @@ -237,12 +237,6 @@ unsigned int leon_build_device_irq(unsigned int real_irq, return irq; } -static unsigned int _leon_build_device_irq(struct platform_device *op, - unsigned int real_irq) -{ - return leon_build_device_irq(real_irq, handle_simple_irq, "edge", 0); -} - void leon_update_virq_handling(unsigned int virq, irq_flow_handler_t flow_handler, const char *name, int do_ack) @@ -258,7 +252,7 @@ void leon_update_virq_handling(unsigned int virq, irq_set_chip_data(virq, (void *)mask); } -static u32 leon_cycles_offset(void) +u32 leon_cycles_offset(void) { u32 rld, val, ctrl, off; @@ -312,14 +306,6 @@ void __init leon_init_timers(void) u32 config; u32 ctrl; - sparc_config.get_cycles_offset = leon_cycles_offset; - sparc_config.cs_period = 1000000 / HZ; - sparc_config.features |= FEAT_L10_CLOCKSOURCE; - -#ifndef CONFIG_SMP - sparc_config.features |= FEAT_L10_CLOCKEVENT; -#endif - leondebug_irq_disable = 0; leon_debug_irqout = 0; master_l10_counter = (u32 __iomem *)&dummy_master_l10_counter; @@ -434,7 +420,7 @@ void __init leon_init_timers(void) err = request_irq(irq, leon_percpu_timer_ce_interrupt, IRQF_PERCPU | IRQF_TIMER, "timer", NULL); #else - irq = _leon_build_device_irq(NULL, leon3_gptimer_irq); + irq = leon_build_device_irq(leon3_gptimer_irq, handle_simple_irq, "edge", 0); err = request_irq(irq, timer_interrupt, IRQF_TIMER, "timer", NULL); #endif if (err) { @@ -453,7 +439,7 @@ void __init leon_init_timers(void) return; } -static void leon_clear_clock_irq(void) +void leon_clear_clock_irq(void) { u32 ctrl; @@ -462,7 +448,7 @@ static void leon_clear_clock_irq(void) ctrl & leon3_gptimer_ackmask); } -static void leon_load_profile_irq(int cpu, unsigned int limit) +void leon_load_profile_irq(int cpu, unsigned int limit) { } @@ -485,9 +471,4 @@ void leon_enable_irq_cpu(unsigned int irq_nr, unsigned int cpu) void __init leon_init_IRQ(void) { - sparc_config.init_timers = leon_init_timers; - sparc_config.build_device_irq = _leon_build_device_irq; - sparc_config.clock_rate = 1000000; - sparc_config.clear_clock_irq = leon_clear_clock_irq; - sparc_config.load_profile_irq = leon_load_profile_irq; } diff --git a/arch/sparc/kernel/of_device_32.c b/arch/sparc/kernel/of_device_32.c index 06012e68bdca..ddb3b197d5e4 100644 --- a/arch/sparc/kernel/of_device_32.c +++ b/arch/sparc/kernel/of_device_32.c @@ -358,7 +358,7 @@ static struct platform_device * __init scan_one_device(struct device_node *dp, op->archdata.num_irqs = len / sizeof(struct linux_prom_irqs); for (i = 0; i < op->archdata.num_irqs; i++) op->archdata.irqs[i] = - sparc_config.build_device_irq(op, intr[i].pri); + leon_build_device_irq(intr[i].pri, handle_simple_irq, "edge", 0); } else { const unsigned int *irq = of_get_property(dp, "interrupts", &len); @@ -367,7 +367,7 @@ static struct platform_device * __init scan_one_device(struct device_node *dp, op->archdata.num_irqs = len / sizeof(unsigned int); for (i = 0; i < op->archdata.num_irqs; i++) op->archdata.irqs[i] = - sparc_config.build_device_irq(op, irq[i]); + leon_build_device_irq(irq[i], handle_simple_irq, "edge", 0); } else { op->archdata.num_irqs = 0; } diff --git a/arch/sparc/kernel/time_32.c b/arch/sparc/kernel/time_32.c index 848404610b86..e6a2cb444777 100644 --- a/arch/sparc/kernel/time_32.c +++ b/arch/sparc/kernel/time_32.c @@ -44,6 +44,7 @@ #include #include #include +#include #include #include "kernel.h" @@ -88,10 +89,10 @@ irqreturn_t notrace timer_interrupt(int dummy, void *dev_id) if (timer_cs_enabled) { write_seqlock(&timer_cs_lock); timer_cs_internal_counter++; - sparc_config.clear_clock_irq(); + leon_clear_clock_irq(); write_sequnlock(&timer_cs_lock); } else { - sparc_config.clear_clock_irq(); + leon_clear_clock_irq(); } if (timer_ce_enabled) @@ -100,6 +101,7 @@ irqreturn_t notrace timer_interrupt(int dummy, void *dev_id) return IRQ_HANDLED; } +#ifndef CONFIG_SMP static int timer_ce_shutdown(struct clock_event_device *evt) { timer_ce_enabled = 0; @@ -128,24 +130,10 @@ static __init void setup_timer_ce(void) ce->tick_resume = timer_ce_set_periodic; ce->cpumask = cpu_possible_mask; ce->shift = 32; - ce->mult = div_sc(sparc_config.clock_rate, NSEC_PER_SEC, - ce->shift); + ce->mult = div_sc(LEON_CLOCK_RATE, NSEC_PER_SEC, ce->shift); clockevents_register_device(ce); } - -static unsigned int sbus_cycles_offset(void) -{ - u32 val, offset; - - val = sbus_readl(master_l10_counter); - offset = (val >> TIMER_VALUE_SHIFT) & TIMER_VALUE_MASK; - - /* Limit hit? */ - if (val & TIMER_LIMIT_BIT) - offset += sparc_config.cs_period; - - return offset; -} +#endif static u64 timer_cs_read(struct clocksource *cs) { @@ -156,11 +144,11 @@ static u64 timer_cs_read(struct clocksource *cs) seq = read_seqbegin(&timer_cs_lock); cycles = timer_cs_internal_counter; - offset = sparc_config.get_cycles_offset(); + offset = leon_cycles_offset(); } while (read_seqretry(&timer_cs_lock, seq)); /* Count absolute cycles */ - cycles *= sparc_config.cs_period; + cycles *= LEON_CLOCK_RATE / HZ; cycles += offset; return cycles; @@ -177,7 +165,7 @@ static struct clocksource timer_cs = { static __init int setup_timer_cs(void) { timer_cs_enabled = 1; - return clocksource_register_hz(&timer_cs, sparc_config.clock_rate); + return clocksource_register_hz(&timer_cs, LEON_CLOCK_RATE); } #ifdef CONFIG_SMP @@ -185,7 +173,7 @@ static int percpu_ce_shutdown(struct clock_event_device *evt) { int cpu = cpumask_first(evt->cpumask); - sparc_config.load_profile_irq(cpu, 0); + leon_load_profile_irq(cpu, 0); return 0; } @@ -193,7 +181,7 @@ static int percpu_ce_set_periodic(struct clock_event_device *evt) { int cpu = cpumask_first(evt->cpumask); - sparc_config.load_profile_irq(cpu, SBUS_CLOCK_RATE / HZ); + leon_load_profile_irq(cpu, SBUS_CLOCK_RATE / HZ); return 0; } @@ -203,7 +191,7 @@ static int percpu_ce_set_next_event(unsigned long delta, int cpu = cpumask_first(evt->cpumask); unsigned int next = (unsigned int)delta; - sparc_config.load_profile_irq(cpu, next); + leon_load_profile_irq(cpu, next); return 0; } @@ -212,9 +200,6 @@ void register_percpu_ce(int cpu) struct clock_event_device *ce = &per_cpu(sparc32_clockevent, cpu); unsigned int features = CLOCK_EVT_FEAT_PERIODIC; - if (sparc_config.features & FEAT_L14_ONESHOT) - features |= CLOCK_EVT_FEAT_ONESHOT; - ce->name = "percpu_ce"; ce->rating = 200; ce->features = features; @@ -224,10 +209,9 @@ void register_percpu_ce(int cpu) ce->set_next_event = percpu_ce_set_next_event; ce->cpumask = cpumask_of(cpu); ce->shift = 32; - ce->mult = div_sc(sparc_config.clock_rate, NSEC_PER_SEC, - ce->shift); - ce->max_delta_ns = clockevent_delta2ns(sparc_config.clock_rate, ce); - ce->max_delta_ticks = (unsigned long)sparc_config.clock_rate; + ce->mult = div_sc(LEON_CLOCK_RATE, NSEC_PER_SEC, ce->shift); + ce->max_delta_ns = clockevent_delta2ns(LEON_CLOCK_RATE, ce); + ce->max_delta_ticks = (unsigned long)LEON_CLOCK_RATE; ce->min_delta_ns = clockevent_delta2ns(100, ce); ce->min_delta_ticks = 100; @@ -326,26 +310,20 @@ fs_initcall(clock_init); static void __init sparc32_late_time_init(void) { - if (sparc_config.features & FEAT_L10_CLOCKEVENT) - setup_timer_ce(); - if (sparc_config.features & FEAT_L10_CLOCKSOURCE) - setup_timer_cs(); +#ifndef CONFIG_SMP + setup_timer_ce(); +#endif + setup_timer_cs(); + #ifdef CONFIG_SMP register_percpu_ce(smp_processor_id()); #endif } -static void __init sbus_time_init(void) -{ - sparc_config.get_cycles_offset = sbus_cycles_offset; - sparc_config.init_timers(); -} - void __init time_init(void) { - sparc_config.features = 0; late_time_init = sparc32_late_time_init; - sbus_time_init(); + leon_init_timers(); } -- 2.34.1