mirror of https://gitee.com/openkylin/linux.git
ARM: i.MX remove last leftovers from legacy clock support
This also removes mach/clock.h along the way Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Acked-by: Shawn Guo <shawn.guo@linaro.org> Reviewed-by: Mike Turquette <mturquette@linaro.org>
This commit is contained in:
Sascha Hauer
parent
a6dd3c812e
commit
3a84d17bb3
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@ -12,7 +12,7 @@ obj-$(CONFIG_SOC_IMX35) += mm-imx3.o cpu-imx35.o clk-imx35.o ehci-imx35.o pm-imx
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obj-$(CONFIG_SOC_IMX5) += cpu-imx5.o mm-imx5.o clk-imx51-imx53.o ehci-imx5.o pm-imx5.o cpu_op-mx51.o
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obj-$(CONFIG_COMMON_CLK) += clk-pllv1.o clk-pllv2.o clk-pllv3.o clk-gate2.o \
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clk-pfd.o clk-busy.o
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clk-pfd.o clk-busy.o clk.o
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# Support for CMOS sensor interface
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obj-$(CONFIG_MX1_VIDEO) += mx1-camera-fiq.o mx1-camera-fiq-ksym.o
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@ -6,7 +6,7 @@
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#include <linux/err.h>
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#include <mach/common.h>
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#include <mach/hardware.h>
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#include <mach/clock.h>
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#include "clk.h"
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/**
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@ -0,0 +1,3 @@
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#include <linux/spinlock.h>
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DEFINE_SPINLOCK(imx_ccm_lock);
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@ -3,7 +3,8 @@
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#include <linux/spinlock.h>
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#include <linux/clk-provider.h>
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#include <mach/clock.h>
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extern spinlock_t imx_ccm_lock;
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struct clk *imx_clk_pllv1(const char *name, const char *parent,
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void __iomem *base);
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@ -36,7 +36,6 @@
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#include <asm/mach/map.h>
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#include <asm/mach/time.h>
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#include <mach/clock.h>
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#include <mach/common.h>
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#include <mach/hardware.h>
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#include <mach/iomux-mx3.h>
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@ -3,7 +3,7 @@
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#
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# Common support
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obj-y := clock.o time.o devices.o cpu.o system.o irq-common.o
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obj-y := time.o devices.o cpu.o system.o irq-common.o
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obj-$(CONFIG_MXC_TZIC) += tzic.o
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obj-$(CONFIG_MXC_AVIC) += avic.o
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@ -1,212 +0,0 @@
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/*
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* Based on arch/arm/plat-omap/clock.c
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*
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* Copyright (C) 2004 - 2005 Nokia corporation
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* Written by Tuukka Tikkanen <tuukka.tikkanen@elektrobit.com>
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* Modified for omap shared clock framework by Tony Lindgren <tony@atomide.com>
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* Copyright 2007 Freescale Semiconductor, Inc. All Rights Reserved.
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* Copyright 2008 Juergen Beisert, kernel@pengutronix.de
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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* MA 02110-1301, USA.
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*/
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/* #define DEBUG */
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#include <linux/clk.h>
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#include <linux/err.h>
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#include <linux/errno.h>
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#include <linux/init.h>
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#include <linux/io.h>
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#include <linux/kernel.h>
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#include <linux/list.h>
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#include <linux/module.h>
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#include <linux/mutex.h>
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#include <linux/platform_device.h>
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#include <linux/proc_fs.h>
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#include <linux/semaphore.h>
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#include <linux/string.h>
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#include <mach/clock.h>
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#include <mach/hardware.h>
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#ifndef CONFIG_COMMON_CLK
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static LIST_HEAD(clocks);
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static DEFINE_MUTEX(clocks_mutex);
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/*-------------------------------------------------------------------------
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* Standard clock functions defined in include/linux/clk.h
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*-------------------------------------------------------------------------*/
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static void __clk_disable(struct clk *clk)
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{
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if (clk == NULL || IS_ERR(clk))
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return;
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WARN_ON(!clk->usecount);
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if (!(--clk->usecount)) {
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if (clk->disable)
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clk->disable(clk);
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__clk_disable(clk->parent);
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__clk_disable(clk->secondary);
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}
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}
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static int __clk_enable(struct clk *clk)
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{
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if (clk == NULL || IS_ERR(clk))
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return -EINVAL;
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if (clk->usecount++ == 0) {
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__clk_enable(clk->parent);
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__clk_enable(clk->secondary);
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if (clk->enable)
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clk->enable(clk);
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}
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return 0;
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}
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/* This function increments the reference count on the clock and enables the
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* clock if not already enabled. The parent clock tree is recursively enabled
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*/
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int clk_enable(struct clk *clk)
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{
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int ret = 0;
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if (clk == NULL || IS_ERR(clk))
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return -EINVAL;
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mutex_lock(&clocks_mutex);
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ret = __clk_enable(clk);
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mutex_unlock(&clocks_mutex);
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return ret;
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}
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EXPORT_SYMBOL(clk_enable);
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/* This function decrements the reference count on the clock and disables
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* the clock when reference count is 0. The parent clock tree is
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* recursively disabled
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*/
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void clk_disable(struct clk *clk)
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{
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if (clk == NULL || IS_ERR(clk))
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return;
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mutex_lock(&clocks_mutex);
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__clk_disable(clk);
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mutex_unlock(&clocks_mutex);
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}
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EXPORT_SYMBOL(clk_disable);
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/* Retrieve the *current* clock rate. If the clock itself
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* does not provide a special calculation routine, ask
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* its parent and so on, until one is able to return
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* a valid clock rate
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*/
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unsigned long clk_get_rate(struct clk *clk)
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{
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if (clk == NULL || IS_ERR(clk))
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return 0UL;
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if (clk->get_rate)
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return clk->get_rate(clk);
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return clk_get_rate(clk->parent);
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}
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EXPORT_SYMBOL(clk_get_rate);
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/* Round the requested clock rate to the nearest supported
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* rate that is less than or equal to the requested rate.
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* This is dependent on the clock's current parent.
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*/
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long clk_round_rate(struct clk *clk, unsigned long rate)
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{
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if (clk == NULL || IS_ERR(clk) || !clk->round_rate)
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return 0;
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return clk->round_rate(clk, rate);
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}
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EXPORT_SYMBOL(clk_round_rate);
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/* Set the clock to the requested clock rate. The rate must
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* match a supported rate exactly based on what clk_round_rate returns
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*/
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int clk_set_rate(struct clk *clk, unsigned long rate)
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{
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int ret = -EINVAL;
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if (clk == NULL || IS_ERR(clk) || clk->set_rate == NULL || rate == 0)
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return ret;
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mutex_lock(&clocks_mutex);
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ret = clk->set_rate(clk, rate);
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mutex_unlock(&clocks_mutex);
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return ret;
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}
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EXPORT_SYMBOL(clk_set_rate);
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/* Set the clock's parent to another clock source */
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int clk_set_parent(struct clk *clk, struct clk *parent)
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{
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int ret = -EINVAL;
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struct clk *old;
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if (clk == NULL || IS_ERR(clk) || parent == NULL ||
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IS_ERR(parent) || clk->set_parent == NULL)
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return ret;
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if (clk->usecount)
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clk_enable(parent);
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mutex_lock(&clocks_mutex);
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ret = clk->set_parent(clk, parent);
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if (ret == 0) {
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old = clk->parent;
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clk->parent = parent;
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} else {
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old = parent;
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}
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mutex_unlock(&clocks_mutex);
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if (clk->usecount)
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clk_disable(old);
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return ret;
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}
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EXPORT_SYMBOL(clk_set_parent);
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/* Retrieve the clock's parent clock source */
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struct clk *clk_get_parent(struct clk *clk)
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{
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struct clk *ret = NULL;
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if (clk == NULL || IS_ERR(clk))
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return ret;
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return clk->parent;
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}
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EXPORT_SYMBOL(clk_get_parent);
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#else
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/*
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* Lock to protect the clock module (ccm) registers. Used
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* on all i.MXs
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*/
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DEFINE_SPINLOCK(imx_ccm_lock);
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#endif /* CONFIG_COMMON_CLK */
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@ -23,7 +23,6 @@
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#include <linux/err.h>
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#include <linux/slab.h>
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#include <mach/hardware.h>
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#include <mach/clock.h>
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#define CLK32_FREQ 32768
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#define NANOSECOND (1000 * 1000 * 1000)
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@ -1,68 +0,0 @@
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/*
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* Copyright 2005-2007 Freescale Semiconductor, Inc. All Rights Reserved.
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* Copyright 2008 Juergen Beisert, kernel@pengutronix.de
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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* MA 02110-1301, USA.
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*/
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#ifndef __ASM_ARCH_MXC_CLOCK_H__
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#define __ASM_ARCH_MXC_CLOCK_H__
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#ifndef __ASSEMBLY__
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#include <linux/list.h>
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#ifndef CONFIG_COMMON_CLK
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struct module;
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struct clk {
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int id;
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/* Source clock this clk depends on */
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struct clk *parent;
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/* Secondary clock to enable/disable with this clock */
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struct clk *secondary;
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/* Reference count of clock enable/disable */
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__s8 usecount;
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/* Register bit position for clock's enable/disable control. */
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u8 enable_shift;
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/* Register address for clock's enable/disable control. */
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void __iomem *enable_reg;
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u32 flags;
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/* get the current clock rate (always a fresh value) */
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unsigned long (*get_rate) (struct clk *);
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/* Function ptr to set the clock to a new rate. The rate must match a
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supported rate returned from round_rate. Leave blank if clock is not
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programmable */
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int (*set_rate) (struct clk *, unsigned long);
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/* Function ptr to round the requested clock rate to the nearest
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supported rate that is less than or equal to the requested rate. */
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unsigned long (*round_rate) (struct clk *, unsigned long);
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/* Function ptr to enable the clock. Leave blank if clock can not
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be gated. */
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int (*enable) (struct clk *);
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/* Function ptr to disable the clock. Leave blank if clock can not
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be gated. */
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void (*disable) (struct clk *);
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/* Function ptr to set the parent clock of the clock. */
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int (*set_parent) (struct clk *, struct clk *);
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};
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int clk_register(struct clk *clk);
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void clk_unregister(struct clk *clk);
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#endif /* CONFIG_COMMON_CLK */
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extern spinlock_t imx_ccm_lock;
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#endif /* __ASSEMBLY__ */
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#endif /* __ASM_ARCH_MXC_CLOCK_H__ */
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