mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-07-06 11:16:15 +09:00
83d290c56f
When U-Boot started using SPDX tags we were among the early adopters and there weren't a lot of other examples to borrow from. So we picked the area of the file that usually had a full license text and replaced it with an appropriate SPDX-License-Identifier: entry. Since then, the Linux Kernel has adopted SPDX tags and they place it as the very first line in a file (except where shebangs are used, then it's second line) and with slightly different comment styles than us. In part due to community overlap, in part due to better tag visibility and in part for other minor reasons, switch over to that style. This commit changes all instances where we have a single declared license in the tag as both the before and after are identical in tag contents. There's also a few places where I found we did not have a tag and have introduced one. Signed-off-by: Tom Rini <trini@konsulko.com>
79 lines
1.7 KiB
C
79 lines
1.7 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright (C) 2017, STMicroelectronics - All Rights Reserved
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* Author(s): Patrice Chotard, <patrice.chotard@st.com> for STMicroelectronics.
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*/
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#include <common.h>
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#include <dm.h>
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#include <fdtdec.h>
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#include <timer.h>
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#include <asm/io.h>
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#include <asm/arch-armv7/globaltimer.h>
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DECLARE_GLOBAL_DATA_PTR;
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struct sti_timer_priv {
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struct globaltimer *global_timer;
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};
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static int sti_timer_get_count(struct udevice *dev, u64 *count)
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{
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struct sti_timer_priv *priv = dev_get_priv(dev);
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struct globaltimer *global_timer = priv->global_timer;
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u32 low, high;
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u64 timer;
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u32 old = readl(&global_timer->cnt_h);
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while (1) {
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low = readl(&global_timer->cnt_l);
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high = readl(&global_timer->cnt_h);
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if (old == high)
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break;
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else
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old = high;
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}
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timer = high;
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*count = (u64)((timer << 32) | low);
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return 0;
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}
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static int sti_timer_probe(struct udevice *dev)
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{
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struct timer_dev_priv *uc_priv = dev_get_uclass_priv(dev);
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struct sti_timer_priv *priv = dev_get_priv(dev);
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fdt_addr_t addr;
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uc_priv->clock_rate = CONFIG_SYS_HZ_CLOCK;
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/* get arm global timer base address */
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addr = fdtdec_get_addr(gd->fdt_blob, dev_of_offset(dev), "reg");
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priv->global_timer = (struct globaltimer *)addr;
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/* init timer */
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writel(0x01, &priv->global_timer->ctl);
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return 0;
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}
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static const struct timer_ops sti_timer_ops = {
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.get_count = sti_timer_get_count,
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};
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static const struct udevice_id sti_timer_ids[] = {
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{ .compatible = "arm,cortex-a9-global-timer" },
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{}
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};
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U_BOOT_DRIVER(sti_timer) = {
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.name = "sti_timer",
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.id = UCLASS_TIMER,
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.of_match = sti_timer_ids,
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.priv_auto_alloc_size = sizeof(struct sti_timer_priv),
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.probe = sti_timer_probe,
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.ops = &sti_timer_ops,
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.flags = DM_FLAG_PRE_RELOC,
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};
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