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sh: hwblk: Kill off remaining bits of hwblk API.
Now that everything has been migrated, kill off the remaining infrastructure bits. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
This commit is contained in:
Paul Mundt
parent
ec20a81562
commit
cfc806a7ee
@ -1,74 +0,0 @@
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#ifndef __ASM_SH_HWBLK_H
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#define __ASM_SH_HWBLK_H
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#include <asm/clock.h>
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#include <asm/io.h>
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#define HWBLK_CNT_USAGE 0
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#define HWBLK_CNT_IDLE 1
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#define HWBLK_CNT_DEVICES 2
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#define HWBLK_CNT_NR 3
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#define HWBLK_AREA_FLAG_PARENT (1 << 0) /* valid parent */
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#define HWBLK_AREA(_flags, _parent) \
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{ \
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.flags = _flags, \
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.parent = _parent, \
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}
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struct hwblk_area {
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int cnt[HWBLK_CNT_NR];
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unsigned char parent;
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unsigned char flags;
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};
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#define HWBLK(_mstp, _bit, _area) \
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{ \
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.mstp = (void __iomem *)_mstp, \
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.bit = _bit, \
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.area = _area, \
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}
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struct hwblk {
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void __iomem *mstp;
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unsigned char bit;
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unsigned char area;
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int cnt[HWBLK_CNT_NR];
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};
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struct hwblk_info {
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struct hwblk_area *areas;
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int nr_areas;
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struct hwblk *hwblks;
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int nr_hwblks;
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};
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#if !defined(CONFIG_CPU_SUBTYPE_SH7722) && \
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!defined(CONFIG_CPU_SUBTYPE_SH7723) && \
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!defined(CONFIG_CPU_SUBTYPE_SH7724)
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/* Should be defined by processor-specific code */
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int arch_hwblk_init(void);
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int hwblk_register(struct hwblk_info *info);
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int hwblk_init(void);
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void hwblk_enable(struct hwblk_info *info, int hwblk);
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void hwblk_disable(struct hwblk_info *info, int hwblk);
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void hwblk_cnt_inc(struct hwblk_info *info, int hwblk, int cnt);
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void hwblk_cnt_dec(struct hwblk_info *info, int hwblk, int cnt);
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/* allow clocks to enable and disable hardware blocks */
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#define SH_HWBLK_CLK(_hwblk, _parent, _flags) \
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[_hwblk] = { \
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.parent = _parent, \
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.arch_flags = _hwblk, \
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.flags = _flags, \
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}
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int sh_hwblk_clk_register(struct clk *clks, int nr);
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#else
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#define hwblk_init() 0
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#endif
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#endif /* __ASM_SH_HWBLK_H */
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@ -19,6 +19,3 @@ obj-$(CONFIG_SH_ADC) += adc.o
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obj-$(CONFIG_SH_CLK_CPG_LEGACY) += clock-cpg.o
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obj-y += irq/ init.o clock.o fpu.o proc.o
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ifneq ($(CONFIG_CPU_SUBTYPE_SH7722)$(CONFIG_CPU_SUBTYPE_SH7723)$(CONFIG_CPU_SUBTYPE_SH7724),y)
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obj-y += hwblk.o
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endif
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@ -1,154 +0,0 @@
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#include <linux/clk.h>
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#include <linux/compiler.h>
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#include <linux/io.h>
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#include <linux/spinlock.h>
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#include <asm/suspend.h>
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#include <asm/hwblk.h>
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#include <asm/clock.h>
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static DEFINE_SPINLOCK(hwblk_lock);
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static void hwblk_area_mod_cnt(struct hwblk_info *info,
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int area, int counter, int value, int goal)
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{
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struct hwblk_area *hap = info->areas + area;
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hap->cnt[counter] += value;
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if (hap->cnt[counter] != goal)
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return;
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if (hap->flags & HWBLK_AREA_FLAG_PARENT)
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hwblk_area_mod_cnt(info, hap->parent, counter, value, goal);
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}
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static int __hwblk_mod_cnt(struct hwblk_info *info, int hwblk,
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int counter, int value, int goal)
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{
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struct hwblk *hp = info->hwblks + hwblk;
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hp->cnt[counter] += value;
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if (hp->cnt[counter] == goal)
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hwblk_area_mod_cnt(info, hp->area, counter, value, goal);
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return hp->cnt[counter];
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}
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static void hwblk_mod_cnt(struct hwblk_info *info, int hwblk,
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int counter, int value, int goal)
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{
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unsigned long flags;
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spin_lock_irqsave(&hwblk_lock, flags);
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__hwblk_mod_cnt(info, hwblk, counter, value, goal);
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spin_unlock_irqrestore(&hwblk_lock, flags);
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}
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void hwblk_cnt_inc(struct hwblk_info *info, int hwblk, int counter)
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{
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hwblk_mod_cnt(info, hwblk, counter, 1, 1);
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}
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void hwblk_cnt_dec(struct hwblk_info *info, int hwblk, int counter)
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{
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hwblk_mod_cnt(info, hwblk, counter, -1, 0);
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}
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void hwblk_enable(struct hwblk_info *info, int hwblk)
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{
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struct hwblk *hp = info->hwblks + hwblk;
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unsigned long tmp;
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unsigned long flags;
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int ret;
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spin_lock_irqsave(&hwblk_lock, flags);
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ret = __hwblk_mod_cnt(info, hwblk, HWBLK_CNT_USAGE, 1, 1);
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if (ret == 1) {
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tmp = __raw_readl(hp->mstp);
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tmp &= ~(1 << hp->bit);
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__raw_writel(tmp, hp->mstp);
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}
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spin_unlock_irqrestore(&hwblk_lock, flags);
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}
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void hwblk_disable(struct hwblk_info *info, int hwblk)
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{
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struct hwblk *hp = info->hwblks + hwblk;
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unsigned long tmp;
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unsigned long flags;
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int ret;
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spin_lock_irqsave(&hwblk_lock, flags);
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ret = __hwblk_mod_cnt(info, hwblk, HWBLK_CNT_USAGE, -1, 0);
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if (ret == 0) {
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tmp = __raw_readl(hp->mstp);
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tmp |= 1 << hp->bit;
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__raw_writel(tmp, hp->mstp);
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}
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spin_unlock_irqrestore(&hwblk_lock, flags);
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}
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struct hwblk_info *hwblk_info;
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int __init hwblk_register(struct hwblk_info *info)
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{
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hwblk_info = info;
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return 0;
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}
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int __init __weak arch_hwblk_init(void)
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{
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return 0;
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}
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int __init hwblk_init(void)
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{
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return arch_hwblk_init();
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}
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/* allow clocks to enable and disable hardware blocks */
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static int sh_hwblk_clk_enable(struct clk *clk)
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{
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if (!hwblk_info)
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return -ENOENT;
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hwblk_enable(hwblk_info, clk->arch_flags);
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return 0;
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}
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static void sh_hwblk_clk_disable(struct clk *clk)
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{
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if (hwblk_info)
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hwblk_disable(hwblk_info, clk->arch_flags);
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}
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static struct clk_ops sh_hwblk_clk_ops = {
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.enable = sh_hwblk_clk_enable,
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.disable = sh_hwblk_clk_disable,
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.recalc = followparent_recalc,
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};
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int __init sh_hwblk_clk_register(struct clk *clks, int nr)
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{
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struct clk *clkp;
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int ret = 0;
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int k;
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for (k = 0; !ret && (k < nr); k++) {
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clkp = clks + k;
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/* skip over clocks using hwblk 0 (HWBLK_UNKNOWN) */
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if (!clkp->arch_flags)
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continue;
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clkp->ops = &sh_hwblk_clk_ops;
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ret |= clk_register(clkp);
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}
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return ret;
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}
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@ -21,7 +21,6 @@
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#include <linux/smp.h>
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#include <linux/rtc.h>
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#include <asm/clock.h>
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#include <asm/hwblk.h>
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#include <asm/rtc.h>
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/* Dummy RTC ops */
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@ -110,7 +109,6 @@ void __init time_init(void)
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if (board_time_init)
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board_time_init();
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hwblk_init();
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clk_init();
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late_time_init = sh_late_time_init;
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