From patchwork Wed May 9 17:26:02 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: David Lechner X-Patchwork-Id: 10390357 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 6676360318 for ; Wed, 9 May 2018 17:30:26 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 5494B26E3D for ; Wed, 9 May 2018 17:30:26 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 48DBB28528; Wed, 9 May 2018 17:30:26 +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=-7.8 required=2.0 tests=BAYES_00,DKIM_SIGNED, MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI, T_DKIM_INVALID autolearn=unavailable version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id B622026E3D for ; Wed, 9 May 2018 17:30:24 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S935251AbeEIR3V (ORCPT ); Wed, 9 May 2018 13:29:21 -0400 Received: from vern.gendns.com ([206.190.152.46]:52085 "EHLO vern.gendns.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S965835AbeEIR1P (ORCPT ); Wed, 9 May 2018 13:27:15 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lechnology.com; s=default; h=References:In-Reply-To:Message-Id:Date:Subject :Cc:To:From:Sender:Reply-To:MIME-Version:Content-Type: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Id: List-Help:List-Unsubscribe:List-Subscribe:List-Post:List-Owner:List-Archive; bh=jipc1niq3dKFLWDSkPZfn6WwMx9L+IqowZJsJDP8N24=; b=Txh742cwri6HZpSk0gNPHHNg8 dWBnOnjJTSMvRsV4O5WvpAIxP7j0p/qzAeKi5B2Ss09tNqI5PGdEl89XUrsdkRYbPlNoNzHvyNk7P 9PBsJvG+kqE9ecDphwBGIOUm/usLfvNZsWZ8/vDCtdp8T898IcqvjdMab4XaqpoCzLI9CB++HgKGc 2VUY0BnuChtMPg8xSmHc6MJRZ80H0kWZJWL7SD21iEGsspPttmLSKHH/Xk3PPXI0OyIC8qzM9ljkh r7Jdel9NOXIr69/ZceMWRr9aa5bxGsA65umHDkM56WIx05xxtU74SPY8MlX28xXPy01eTP8TCj8iE ky7zyDXIg==; Received: from 108-198-5-147.lightspeed.okcbok.sbcglobal.net ([108.198.5.147]:58616 helo=freyr.lechnology.com) by vern.gendns.com with esmtpsa (TLSv1.2:ECDHE-RSA-AES128-GCM-SHA256:128) (Exim 4.89_1) (envelope-from ) id 1fGSrx-00EzgW-Hz; Wed, 09 May 2018 13:27:14 -0400 From: David Lechner To: linux-clk@vger.kernel.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org Cc: Michael Turquette , Stephen Boyd , Rob Herring , Mark Rutland , Sekhar Nori , Kevin Hilman , Bartosz Golaszewski , Adam Ford , linux-kernel@vger.kernel.org, David Lechner Subject: [PATCH v10 23/27] ARM: davinci: remove legacy clocks Date: Wed, 9 May 2018 12:26:02 -0500 Message-Id: <20180509172606.29387-24-david@lechnology.com> X-Mailer: git-send-email 2.17.0 In-Reply-To: <20180509172606.29387-1-david@lechnology.com> References: <20180509172606.29387-1-david@lechnology.com> X-AntiAbuse: This header was added to track abuse, please include it with any abuse report X-AntiAbuse: Primary Hostname - vern.gendns.com X-AntiAbuse: Original Domain - vger.kernel.org X-AntiAbuse: Originator/Caller UID/GID - [47 12] / [47 12] X-AntiAbuse: Sender Address Domain - lechnology.com X-Get-Message-Sender-Via: vern.gendns.com: authenticated_id: davidmain+lechnology.com/only user confirmed/virtual account not confirmed X-Authenticated-Sender: vern.gendns.com: davidmain@lechnology.com X-Source: X-Source-Args: X-Source-Dir: Sender: linux-clk-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-clk@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP This removes the unused legacy clock code from arch/arm/mach-davinci/. Signed-off-by: David Lechner Reviewed-by: Sekhar Nori --- v10 changes: - none v9 changes: - none v8 changes: - none v7 changes: - rebased - add davinci prefix to commit message v6 changes: - rebased arch/arm/mach-davinci/clock.c | 745 -------------------- arch/arm/mach-davinci/clock.h | 72 -- arch/arm/mach-davinci/common.c | 2 - arch/arm/mach-davinci/devices.c | 1 - arch/arm/mach-davinci/include/mach/clock.h | 3 - arch/arm/mach-davinci/include/mach/common.h | 2 - arch/arm/mach-davinci/psc.c | 137 ---- arch/arm/mach-davinci/psc.h | 10 - arch/arm/mach-davinci/time.c | 2 - 9 files changed, 974 deletions(-) delete mode 100644 arch/arm/mach-davinci/clock.c delete mode 100644 arch/arm/mach-davinci/psc.c diff --git a/arch/arm/mach-davinci/clock.c b/arch/arm/mach-davinci/clock.c deleted file mode 100644 index f77a4f766050..000000000000 --- a/arch/arm/mach-davinci/clock.c +++ /dev/null @@ -1,745 +0,0 @@ -/* - * Clock and PLL control for DaVinci devices - * - * Copyright (C) 2006-2007 Texas Instruments. - * Copyright (C) 2008-2009 Deep Root Systems, LLC - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - */ - -#include -#include -#include -#include -#include -#include -#include -#include -#include - -#include - -#include -#include "psc.h" -#include -#include "clock.h" - -static LIST_HEAD(clocks); -static DEFINE_MUTEX(clocks_mutex); -static DEFINE_SPINLOCK(clockfw_lock); - -void davinci_clk_enable(struct clk *clk) -{ - if (clk->parent) - davinci_clk_enable(clk->parent); - if (clk->usecount++ == 0) { - if (clk->flags & CLK_PSC) - davinci_psc_config(clk->domain, clk->gpsc, clk->lpsc, - true, clk->flags); - else if (clk->clk_enable) - clk->clk_enable(clk); - } -} - -void davinci_clk_disable(struct clk *clk) -{ - if (WARN_ON(clk->usecount == 0)) - return; - if (--clk->usecount == 0) { - if (!(clk->flags & CLK_PLL) && (clk->flags & CLK_PSC)) - davinci_psc_config(clk->domain, clk->gpsc, clk->lpsc, - false, clk->flags); - else if (clk->clk_disable) - clk->clk_disable(clk); - } - if (clk->parent) - davinci_clk_disable(clk->parent); -} - -int davinci_clk_reset(struct clk *clk, bool reset) -{ - unsigned long flags; - - if (clk == NULL || IS_ERR(clk)) - return -EINVAL; - - spin_lock_irqsave(&clockfw_lock, flags); - if (clk->flags & CLK_PSC) - davinci_psc_reset(clk->gpsc, clk->lpsc, reset); - spin_unlock_irqrestore(&clockfw_lock, flags); - - return 0; -} -EXPORT_SYMBOL(davinci_clk_reset); - -int davinci_clk_reset_assert(struct clk *clk) -{ - if (clk == NULL || IS_ERR(clk) || !clk->reset) - return -EINVAL; - - return clk->reset(clk, true); -} -EXPORT_SYMBOL(davinci_clk_reset_assert); - -int davinci_clk_reset_deassert(struct clk *clk) -{ - if (clk == NULL || IS_ERR(clk) || !clk->reset) - return -EINVAL; - - return clk->reset(clk, false); -} -EXPORT_SYMBOL(davinci_clk_reset_deassert); - -int clk_enable(struct clk *clk) -{ - unsigned long flags; - - if (!clk) - return 0; - else if (IS_ERR(clk)) - return -EINVAL; - - spin_lock_irqsave(&clockfw_lock, flags); - davinci_clk_enable(clk); - spin_unlock_irqrestore(&clockfw_lock, flags); - - return 0; -} -EXPORT_SYMBOL(clk_enable); - -void clk_disable(struct clk *clk) -{ - unsigned long flags; - - if (clk == NULL || IS_ERR(clk)) - return; - - spin_lock_irqsave(&clockfw_lock, flags); - davinci_clk_disable(clk); - spin_unlock_irqrestore(&clockfw_lock, flags); -} -EXPORT_SYMBOL(clk_disable); - -unsigned long clk_get_rate(struct clk *clk) -{ - if (clk == NULL || IS_ERR(clk)) - return 0; - - return clk->rate; -} -EXPORT_SYMBOL(clk_get_rate); - -long clk_round_rate(struct clk *clk, unsigned long rate) -{ - if (clk == NULL || IS_ERR(clk)) - return 0; - - if (clk->round_rate) - return clk->round_rate(clk, rate); - - return clk->rate; -} -EXPORT_SYMBOL(clk_round_rate); - -/* Propagate rate to children */ -static void propagate_rate(struct clk *root) -{ - struct clk *clk; - - list_for_each_entry(clk, &root->children, childnode) { - if (clk->recalc) - clk->rate = clk->recalc(clk); - propagate_rate(clk); - } -} - -int clk_set_rate(struct clk *clk, unsigned long rate) -{ - unsigned long flags; - int ret = -EINVAL; - - if (!clk) - return 0; - else if (IS_ERR(clk)) - return -EINVAL; - - if (clk->set_rate) - ret = clk->set_rate(clk, rate); - - spin_lock_irqsave(&clockfw_lock, flags); - if (ret == 0) { - if (clk->recalc) - clk->rate = clk->recalc(clk); - propagate_rate(clk); - } - spin_unlock_irqrestore(&clockfw_lock, flags); - - return ret; -} -EXPORT_SYMBOL(clk_set_rate); - -int clk_set_parent(struct clk *clk, struct clk *parent) -{ - unsigned long flags; - - if (!clk) - return 0; - else if (IS_ERR(clk)) - return -EINVAL; - - /* Cannot change parent on enabled clock */ - if (WARN_ON(clk->usecount)) - return -EINVAL; - - mutex_lock(&clocks_mutex); - if (clk->set_parent) { - int ret = clk->set_parent(clk, parent); - - if (ret) { - mutex_unlock(&clocks_mutex); - return ret; - } - } - clk->parent = parent; - list_del_init(&clk->childnode); - list_add(&clk->childnode, &clk->parent->children); - mutex_unlock(&clocks_mutex); - - spin_lock_irqsave(&clockfw_lock, flags); - if (clk->recalc) - clk->rate = clk->recalc(clk); - propagate_rate(clk); - spin_unlock_irqrestore(&clockfw_lock, flags); - - return 0; -} -EXPORT_SYMBOL(clk_set_parent); - -struct clk *clk_get_parent(struct clk *clk) -{ - if (!clk) - return NULL; - - return clk->parent; -} -EXPORT_SYMBOL(clk_get_parent); - -int clk_register(struct clk *clk) -{ - if (clk == NULL || IS_ERR(clk)) - return -EINVAL; - - if (WARN(clk->parent && !clk->parent->rate, - "CLK: %s parent %s has no rate!\n", - clk->name, clk->parent->name)) - return -EINVAL; - - INIT_LIST_HEAD(&clk->children); - - mutex_lock(&clocks_mutex); - list_add_tail(&clk->node, &clocks); - if (clk->parent) { - if (clk->set_parent) { - int ret = clk->set_parent(clk, clk->parent); - - if (ret) { - mutex_unlock(&clocks_mutex); - return ret; - } - } - list_add_tail(&clk->childnode, &clk->parent->children); - } - mutex_unlock(&clocks_mutex); - - /* If rate is already set, use it */ - if (clk->rate) - return 0; - - /* Else, see if there is a way to calculate it */ - if (clk->recalc) - clk->rate = clk->recalc(clk); - - /* Otherwise, default to parent rate */ - else if (clk->parent) - clk->rate = clk->parent->rate; - - return 0; -} -EXPORT_SYMBOL(clk_register); - -void clk_unregister(struct clk *clk) -{ - if (clk == NULL || IS_ERR(clk)) - return; - - mutex_lock(&clocks_mutex); - list_del(&clk->node); - list_del(&clk->childnode); - mutex_unlock(&clocks_mutex); -} -EXPORT_SYMBOL(clk_unregister); - -#ifdef CONFIG_DAVINCI_RESET_CLOCKS -/* - * Disable any unused clocks left on by the bootloader - */ -int __init davinci_clk_disable_unused(void) -{ - struct clk *ck; - - spin_lock_irq(&clockfw_lock); - list_for_each_entry(ck, &clocks, node) { - if (ck->usecount > 0) - continue; - if (!(ck->flags & CLK_PSC)) - continue; - - /* ignore if in Disabled or SwRstDisable states */ - if (!davinci_psc_is_clk_active(ck->gpsc, ck->lpsc)) - continue; - - pr_debug("Clocks: disable unused %s\n", ck->name); - - davinci_psc_config(ck->domain, ck->gpsc, ck->lpsc, - false, ck->flags); - } - spin_unlock_irq(&clockfw_lock); - - return 0; -} -#endif - -static unsigned long clk_sysclk_recalc(struct clk *clk) -{ - u32 v, plldiv; - struct pll_data *pll; - unsigned long rate = clk->rate; - - /* If this is the PLL base clock, no more calculations needed */ - if (clk->pll_data) - return rate; - - if (WARN_ON(!clk->parent)) - return rate; - - rate = clk->parent->rate; - - /* Otherwise, the parent must be a PLL */ - if (WARN_ON(!clk->parent->pll_data)) - return rate; - - pll = clk->parent->pll_data; - - /* If pre-PLL, source clock is before the multiplier and divider(s) */ - if (clk->flags & PRE_PLL) - rate = pll->input_rate; - - if (!clk->div_reg) - return rate; - - v = __raw_readl(pll->base + clk->div_reg); - if (v & PLLDIV_EN) { - plldiv = (v & pll->div_ratio_mask) + 1; - if (plldiv) - rate /= plldiv; - } - - return rate; -} - -int davinci_set_sysclk_rate(struct clk *clk, unsigned long rate) -{ - unsigned v; - struct pll_data *pll; - unsigned long input; - unsigned ratio = 0; - - /* If this is the PLL base clock, wrong function to call */ - if (clk->pll_data) - return -EINVAL; - - /* There must be a parent... */ - if (WARN_ON(!clk->parent)) - return -EINVAL; - - /* ... the parent must be a PLL... */ - if (WARN_ON(!clk->parent->pll_data)) - return -EINVAL; - - /* ... and this clock must have a divider. */ - if (WARN_ON(!clk->div_reg)) - return -EINVAL; - - pll = clk->parent->pll_data; - - input = clk->parent->rate; - - /* If pre-PLL, source clock is before the multiplier and divider(s) */ - if (clk->flags & PRE_PLL) - input = pll->input_rate; - - if (input > rate) { - /* - * Can afford to provide an output little higher than requested - * only if maximum rate supported by hardware on this sysclk - * is known. - */ - if (clk->maxrate) { - ratio = DIV_ROUND_CLOSEST(input, rate); - if (input / ratio > clk->maxrate) - ratio = 0; - } - - if (ratio == 0) - ratio = DIV_ROUND_UP(input, rate); - - ratio--; - } - - if (ratio > pll->div_ratio_mask) - return -EINVAL; - - do { - v = __raw_readl(pll->base + PLLSTAT); - } while (v & PLLSTAT_GOSTAT); - - v = __raw_readl(pll->base + clk->div_reg); - v &= ~pll->div_ratio_mask; - v |= ratio | PLLDIV_EN; - __raw_writel(v, pll->base + clk->div_reg); - - v = __raw_readl(pll->base + PLLCMD); - v |= PLLCMD_GOSET; - __raw_writel(v, pll->base + PLLCMD); - - do { - v = __raw_readl(pll->base + PLLSTAT); - } while (v & PLLSTAT_GOSTAT); - - return 0; -} -EXPORT_SYMBOL(davinci_set_sysclk_rate); - -static unsigned long clk_leafclk_recalc(struct clk *clk) -{ - if (WARN_ON(!clk->parent)) - return clk->rate; - - return clk->parent->rate; -} - -int davinci_simple_set_rate(struct clk *clk, unsigned long rate) -{ - clk->rate = rate; - return 0; -} - -static unsigned long clk_pllclk_recalc(struct clk *clk) -{ - u32 ctrl, mult = 1, prediv = 1, postdiv = 1; - u8 bypass; - struct pll_data *pll = clk->pll_data; - unsigned long rate = clk->rate; - - ctrl = __raw_readl(pll->base + PLLCTL); - rate = pll->input_rate = clk->parent->rate; - - if (ctrl & PLLCTL_PLLEN) { - bypass = 0; - mult = __raw_readl(pll->base + PLLM); - if (cpu_is_davinci_dm365()) - mult = 2 * (mult & PLLM_PLLM_MASK); - else - mult = (mult & PLLM_PLLM_MASK) + 1; - } else - bypass = 1; - - if (pll->flags & PLL_HAS_PREDIV) { - prediv = __raw_readl(pll->base + PREDIV); - if (prediv & PLLDIV_EN) - prediv = (prediv & pll->div_ratio_mask) + 1; - else - prediv = 1; - } - - /* pre-divider is fixed, but (some?) chips won't report that */ - if (cpu_is_davinci_dm355() && pll->num == 1) - prediv = 8; - - if (pll->flags & PLL_HAS_POSTDIV) { - postdiv = __raw_readl(pll->base + POSTDIV); - if (postdiv & PLLDIV_EN) - postdiv = (postdiv & pll->div_ratio_mask) + 1; - else - postdiv = 1; - } - - if (!bypass) { - rate /= prediv; - rate *= mult; - rate /= postdiv; - } - - pr_debug("PLL%d: input = %lu MHz [ ", - pll->num, clk->parent->rate / 1000000); - if (bypass) - pr_debug("bypass "); - if (prediv > 1) - pr_debug("/ %d ", prediv); - if (mult > 1) - pr_debug("* %d ", mult); - if (postdiv > 1) - pr_debug("/ %d ", postdiv); - pr_debug("] --> %lu MHz output.\n", rate / 1000000); - - return rate; -} - -/** - * davinci_set_pllrate - set the output rate of a given PLL. - * - * Note: Currently tested to work with OMAP-L138 only. - * - * @pll: pll whose rate needs to be changed. - * @prediv: The pre divider value. Passing 0 disables the pre-divider. - * @pllm: The multiplier value. Passing 0 leads to multiply-by-one. - * @postdiv: The post divider value. Passing 0 disables the post-divider. - */ -int davinci_set_pllrate(struct pll_data *pll, unsigned int prediv, - unsigned int mult, unsigned int postdiv) -{ - u32 ctrl; - unsigned int locktime; - unsigned long flags; - - if (pll->base == NULL) - return -EINVAL; - - /* - * PLL lock time required per OMAP-L138 datasheet is - * (2000 * prediv)/sqrt(pllm) OSCIN cycles. We approximate sqrt(pllm) - * as 4 and OSCIN cycle as 25 MHz. - */ - if (prediv) { - locktime = ((2000 * prediv) / 100); - prediv = (prediv - 1) | PLLDIV_EN; - } else { - locktime = PLL_LOCK_TIME; - } - if (postdiv) - postdiv = (postdiv - 1) | PLLDIV_EN; - if (mult) - mult = mult - 1; - - /* Protect against simultaneous calls to PLL setting seqeunce */ - spin_lock_irqsave(&clockfw_lock, flags); - - ctrl = __raw_readl(pll->base + PLLCTL); - - /* Switch the PLL to bypass mode */ - ctrl &= ~(PLLCTL_PLLENSRC | PLLCTL_PLLEN); - __raw_writel(ctrl, pll->base + PLLCTL); - - udelay(PLL_BYPASS_TIME); - - /* Reset and enable PLL */ - ctrl &= ~(PLLCTL_PLLRST | PLLCTL_PLLDIS); - __raw_writel(ctrl, pll->base + PLLCTL); - - if (pll->flags & PLL_HAS_PREDIV) - __raw_writel(prediv, pll->base + PREDIV); - - __raw_writel(mult, pll->base + PLLM); - - if (pll->flags & PLL_HAS_POSTDIV) - __raw_writel(postdiv, pll->base + POSTDIV); - - udelay(PLL_RESET_TIME); - - /* Bring PLL out of reset */ - ctrl |= PLLCTL_PLLRST; - __raw_writel(ctrl, pll->base + PLLCTL); - - udelay(locktime); - - /* Remove PLL from bypass mode */ - ctrl |= PLLCTL_PLLEN; - __raw_writel(ctrl, pll->base + PLLCTL); - - spin_unlock_irqrestore(&clockfw_lock, flags); - - return 0; -} -EXPORT_SYMBOL(davinci_set_pllrate); - -/** - * davinci_set_refclk_rate() - Set the reference clock rate - * @rate: The new rate. - * - * Sets the reference clock rate to a given value. This will most likely - * result in the entire clock tree getting updated. - * - * This is used to support boards which use a reference clock different - * than that used by default in .c file. The reference clock rate - * should be updated early in the boot process; ideally soon after the - * clock tree has been initialized once with the default reference clock - * rate (davinci_clk_init()). - * - * Returns 0 on success, error otherwise. - */ -int davinci_set_refclk_rate(unsigned long rate) -{ - struct clk *refclk; - - refclk = clk_get(NULL, "ref"); - if (IS_ERR(refclk)) { - pr_err("%s: failed to get reference clock\n", __func__); - return PTR_ERR(refclk); - } - - clk_set_rate(refclk, rate); - - clk_put(refclk); - - return 0; -} - -int __init davinci_clk_init(struct clk_lookup *clocks) -{ - struct clk_lookup *c; - struct clk *clk; - size_t num_clocks = 0; - - for (c = clocks; c->clk; c++) { - clk = c->clk; - - if (!clk->recalc) { - - /* Check if clock is a PLL */ - if (clk->pll_data) - clk->recalc = clk_pllclk_recalc; - - /* Else, if it is a PLL-derived clock */ - else if (clk->flags & CLK_PLL) - clk->recalc = clk_sysclk_recalc; - - /* Otherwise, it is a leaf clock (PSC clock) */ - else if (clk->parent) - clk->recalc = clk_leafclk_recalc; - } - - if (clk->pll_data) { - struct pll_data *pll = clk->pll_data; - - if (!pll->div_ratio_mask) - pll->div_ratio_mask = PLLDIV_RATIO_MASK; - - if (pll->phys_base && !pll->base) { - pll->base = ioremap(pll->phys_base, SZ_4K); - WARN_ON(!pll->base); - } - } - - if (clk->recalc) - clk->rate = clk->recalc(clk); - - if (clk->lpsc) - clk->flags |= CLK_PSC; - - if (clk->flags & PSC_LRST) - clk->reset = davinci_clk_reset; - - clk_register(clk); - num_clocks++; - - /* Turn on clocks that Linux doesn't otherwise manage */ - if (clk->flags & ALWAYS_ENABLED) - clk_enable(clk); - } - - clkdev_add_table(clocks, num_clocks); - - return 0; -} - -#ifdef CONFIG_DEBUG_FS - -#include -#include - -#define CLKNAME_MAX 10 /* longest clock name */ -#define NEST_DELTA 2 -#define NEST_MAX 4 - -static void -dump_clock(struct seq_file *s, unsigned nest, struct clk *parent) -{ - char *state; - char buf[CLKNAME_MAX + NEST_DELTA * NEST_MAX]; - struct clk *clk; - unsigned i; - - if (parent->flags & CLK_PLL) - state = "pll"; - else if (parent->flags & CLK_PSC) - state = "psc"; - else - state = ""; - - /* name */ - memset(buf, ' ', sizeof(buf) - 1); - buf[sizeof(buf) - 1] = 0; - i = strlen(parent->name); - memcpy(buf + nest, parent->name, - min(i, (unsigned)(sizeof(buf) - 1 - nest))); - - seq_printf(s, "%s users=%2d %-3s %9ld Hz\n", - buf, parent->usecount, state, clk_get_rate(parent)); - /* REVISIT show device associations too */ - - /* cost is now small, but not linear... */ - list_for_each_entry(clk, &parent->children, childnode) { - dump_clock(s, nest + NEST_DELTA, clk); - } -} - -static int davinci_ck_show(struct seq_file *m, void *v) -{ - struct clk *clk; - - /* - * Show clock tree; We trust nonzero usecounts equate to PSC enables... - */ - mutex_lock(&clocks_mutex); - list_for_each_entry(clk, &clocks, node) - if (!clk->parent) - dump_clock(m, 0, clk); - mutex_unlock(&clocks_mutex); - - return 0; -} - -static int davinci_ck_open(struct inode *inode, struct file *file) -{ - return single_open(file, davinci_ck_show, NULL); -} - -static const struct file_operations davinci_ck_operations = { - .open = davinci_ck_open, - .read = seq_read, - .llseek = seq_lseek, - .release = single_release, -}; - -static int __init davinci_clk_debugfs_init(void) -{ - debugfs_create_file("davinci_clocks", S_IFREG | S_IRUGO, NULL, NULL, - &davinci_ck_operations); - return 0; - -} -device_initcall(davinci_clk_debugfs_init); -#endif /* CONFIG_DEBUG_FS */ diff --git a/arch/arm/mach-davinci/clock.h b/arch/arm/mach-davinci/clock.h index 2d058568e004..307383472400 100644 --- a/arch/arm/mach-davinci/clock.h +++ b/arch/arm/mach-davinci/clock.h @@ -61,76 +61,4 @@ */ #define PLL_LOCK_TIME 20 -#ifndef __ASSEMBLER__ - -#include -#include - -#define PLLSTAT_GOSTAT BIT(0) -#define PLLCMD_GOSET BIT(0) - -struct pll_data { - u32 phys_base; - void __iomem *base; - u32 num; - u32 flags; - u32 input_rate; - u32 div_ratio_mask; -}; -#define PLL_HAS_PREDIV 0x01 -#define PLL_HAS_POSTDIV 0x02 - -struct clk { - struct list_head node; - struct module *owner; - const char *name; - unsigned long rate; - unsigned long maxrate; /* H/W supported max rate */ - u8 usecount; - u8 lpsc; - u8 gpsc; - u8 domain; - u32 flags; - struct clk *parent; - struct list_head children; /* list of children */ - struct list_head childnode; /* parent's child list node */ - struct pll_data *pll_data; - u32 div_reg; - unsigned long (*recalc) (struct clk *); - int (*set_rate) (struct clk *clk, unsigned long rate); - int (*round_rate) (struct clk *clk, unsigned long rate); - int (*reset) (struct clk *clk, bool reset); - void (*clk_enable) (struct clk *clk); - void (*clk_disable) (struct clk *clk); - int (*set_parent) (struct clk *clk, struct clk *parent); -}; - -/* Clock flags: SoC-specific flags start at BIT(16) */ -#define ALWAYS_ENABLED BIT(1) -#define CLK_PSC BIT(2) -#define CLK_PLL BIT(3) /* PLL-derived clock */ -#define PRE_PLL BIT(4) /* source is before PLL mult/div */ -#define PSC_SWRSTDISABLE BIT(5) /* Disable state is SwRstDisable */ -#define PSC_FORCE BIT(6) /* Force module state transtition */ -#define PSC_LRST BIT(8) /* Use local reset on enable/disable */ - -#define CLK(dev, con, ck) \ - { \ - .dev_id = dev, \ - .con_id = con, \ - .clk = ck, \ - } \ - -int davinci_clk_init(struct clk_lookup *clocks); -int davinci_set_pllrate(struct pll_data *pll, unsigned int prediv, - unsigned int mult, unsigned int postdiv); -int davinci_set_sysclk_rate(struct clk *clk, unsigned long rate); -int davinci_set_refclk_rate(unsigned long rate); -int davinci_simple_set_rate(struct clk *clk, unsigned long rate); -int davinci_clk_reset(struct clk *clk, bool reset); -void davinci_clk_enable(struct clk *clk); -void davinci_clk_disable(struct clk *clk); - -#endif - #endif diff --git a/arch/arm/mach-davinci/common.c b/arch/arm/mach-davinci/common.c index e03f95ccd95c..e1d0f0d841ff 100644 --- a/arch/arm/mach-davinci/common.c +++ b/arch/arm/mach-davinci/common.c @@ -20,8 +20,6 @@ #include #include -#include "clock.h" - struct davinci_soc_info davinci_soc_info; EXPORT_SYMBOL(davinci_soc_info); diff --git a/arch/arm/mach-davinci/devices.c b/arch/arm/mach-davinci/devices.c index 0edda4093e47..e8dbbb7479ab 100644 --- a/arch/arm/mach-davinci/devices.c +++ b/arch/arm/mach-davinci/devices.c @@ -26,7 +26,6 @@ #include "davinci.h" -#include "clock.h" #define DAVINCI_I2C_BASE 0x01C21000 #define DAVINCI_ATA_BASE 0x01C66000 diff --git a/arch/arm/mach-davinci/include/mach/clock.h b/arch/arm/mach-davinci/include/mach/clock.h index 3e8af6a0b64c..42ed4f2f5ce4 100644 --- a/arch/arm/mach-davinci/include/mach/clock.h +++ b/arch/arm/mach-davinci/include/mach/clock.h @@ -15,9 +15,6 @@ struct clk; -extern int clk_register(struct clk *clk); -extern void clk_unregister(struct clk *clk); - int davinci_clk_reset_assert(struct clk *c); int davinci_clk_reset_deassert(struct clk *c); diff --git a/arch/arm/mach-davinci/include/mach/common.h b/arch/arm/mach-davinci/include/mach/common.h index ded8f5f42725..b577e13a9c23 100644 --- a/arch/arm/mach-davinci/include/mach/common.h +++ b/arch/arm/mach-davinci/include/mach/common.h @@ -54,8 +54,6 @@ struct davinci_soc_info { u32 jtag_id_reg; struct davinci_id *ids; unsigned long ids_num; - u32 *psc_bases; - unsigned long psc_bases_num; u32 pinmux_base; const struct mux_config *pinmux_pins; unsigned long pinmux_pins_num; diff --git a/arch/arm/mach-davinci/psc.c b/arch/arm/mach-davinci/psc.c deleted file mode 100644 index e5dc6bfde5f3..000000000000 --- a/arch/arm/mach-davinci/psc.c +++ /dev/null @@ -1,137 +0,0 @@ -/* - * TI DaVinci Power and Sleep Controller (PSC) - * - * Copyright (C) 2006 Texas Instruments. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. - * - */ -#include -#include -#include - -#include -#include "psc.h" - -#include "clock.h" - -/* Return nonzero iff the domain's clock is active */ -int __init davinci_psc_is_clk_active(unsigned int ctlr, unsigned int id) -{ - void __iomem *psc_base; - u32 mdstat; - struct davinci_soc_info *soc_info = &davinci_soc_info; - - if (!soc_info->psc_bases || (ctlr >= soc_info->psc_bases_num)) { - pr_warn("PSC: Bad psc data: 0x%x[%d]\n", - (int)soc_info->psc_bases, ctlr); - return 0; - } - - psc_base = ioremap(soc_info->psc_bases[ctlr], SZ_4K); - mdstat = __raw_readl(psc_base + MDSTAT + 4 * id); - iounmap(psc_base); - - /* if clocked, state can be "Enable" or "SyncReset" */ - return mdstat & BIT(12); -} - -/* Control "reset" line associated with PSC domain */ -void davinci_psc_reset(unsigned int ctlr, unsigned int id, bool reset) -{ - u32 mdctl; - void __iomem *psc_base; - struct davinci_soc_info *soc_info = &davinci_soc_info; - - if (!soc_info->psc_bases || (ctlr >= soc_info->psc_bases_num)) { - pr_warn("PSC: Bad psc data: 0x%x[%d]\n", - (int)soc_info->psc_bases, ctlr); - return; - } - - psc_base = ioremap(soc_info->psc_bases[ctlr], SZ_4K); - - mdctl = readl(psc_base + MDCTL + 4 * id); - if (reset) - mdctl &= ~MDCTL_LRST; - else - mdctl |= MDCTL_LRST; - writel(mdctl, psc_base + MDCTL + 4 * id); - - iounmap(psc_base); -} - -/* Enable or disable a PSC domain */ -void davinci_psc_config(unsigned int domain, unsigned int ctlr, - unsigned int id, bool enable, u32 flags) -{ - u32 epcpr, ptcmd, ptstat, pdstat, pdctl, mdstat, mdctl; - void __iomem *psc_base; - struct davinci_soc_info *soc_info = &davinci_soc_info; - u32 next_state = PSC_STATE_ENABLE; - - if (!soc_info->psc_bases || (ctlr >= soc_info->psc_bases_num)) { - pr_warn("PSC: Bad psc data: 0x%x[%d]\n", - (int)soc_info->psc_bases, ctlr); - return; - } - - psc_base = ioremap(soc_info->psc_bases[ctlr], SZ_4K); - - if (!enable) { - if (flags & PSC_SWRSTDISABLE) - next_state = PSC_STATE_SWRSTDISABLE; - else - next_state = PSC_STATE_DISABLE; - } - - mdctl = __raw_readl(psc_base + MDCTL + 4 * id); - mdctl &= ~MDSTAT_STATE_MASK; - mdctl |= next_state; - if (flags & PSC_FORCE) - mdctl |= MDCTL_FORCE; - __raw_writel(mdctl, psc_base + MDCTL + 4 * id); - - pdstat = __raw_readl(psc_base + PDSTAT + 4 * domain); - if ((pdstat & PDSTAT_STATE_MASK) == 0) { - pdctl = __raw_readl(psc_base + PDCTL + 4 * domain); - pdctl |= PDCTL_NEXT; - __raw_writel(pdctl, psc_base + PDCTL + 4 * domain); - - ptcmd = 1 << domain; - __raw_writel(ptcmd, psc_base + PTCMD); - - do { - epcpr = __raw_readl(psc_base + EPCPR); - } while ((((epcpr >> domain) & 1) == 0)); - - pdctl = __raw_readl(psc_base + PDCTL + 4 * domain); - pdctl |= PDCTL_EPCGOOD; - __raw_writel(pdctl, psc_base + PDCTL + 4 * domain); - } else { - ptcmd = 1 << domain; - __raw_writel(ptcmd, psc_base + PTCMD); - } - - do { - ptstat = __raw_readl(psc_base + PTSTAT); - } while (!(((ptstat >> domain) & 1) == 0)); - - do { - mdstat = __raw_readl(psc_base + MDSTAT + 4 * id); - } while (!((mdstat & MDSTAT_STATE_MASK) == next_state)); - - iounmap(psc_base); -} diff --git a/arch/arm/mach-davinci/psc.h b/arch/arm/mach-davinci/psc.h index b58707cf7033..68cd9d3fc82b 100644 --- a/arch/arm/mach-davinci/psc.h +++ b/arch/arm/mach-davinci/psc.h @@ -204,14 +204,4 @@ #define PDCTL_NEXT BIT(0) #define PDCTL_EPCGOOD BIT(8) -#ifndef __ASSEMBLER__ - -extern int davinci_psc_is_clk_active(unsigned int ctlr, unsigned int id); -extern void davinci_psc_reset(unsigned int ctlr, unsigned int id, - bool reset); -extern void davinci_psc_config(unsigned int domain, unsigned int ctlr, - unsigned int id, bool enable, u32 flags); - -#endif - #endif /* __ASM_ARCH_PSC_H */ diff --git a/arch/arm/mach-davinci/time.c b/arch/arm/mach-davinci/time.c index 486896f309c5..7ea3db0ff062 100644 --- a/arch/arm/mach-davinci/time.c +++ b/arch/arm/mach-davinci/time.c @@ -27,8 +27,6 @@ #include #include -#include "clock.h" - static struct clock_event_device clockevent_davinci; static unsigned int davinci_clock_tick_rate;