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@@ -0,0 +1,78 @@
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+/*
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+ * (C) Copyright 2017 Patrice Chotard <patrice.chotard@st.com>
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+ *
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+ * SPDX-License-Identifier: GPL-2.0+
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+ */
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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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+
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+#include <asm/io.h>
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+#include <asm/arch-armv7/globaltimer.h>
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+
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+DECLARE_GLOBAL_DATA_PTR;
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+
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+struct sti_timer_priv {
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+ struct globaltimer *global_timer;
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+};
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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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+
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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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+
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+ return 0;
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+}
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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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+
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+ uc_priv->clock_rate = CONFIG_SYS_HZ_CLOCK;
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+
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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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+
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+ /* init timer */
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+ writel(0x01, &priv->global_timer->ctl);
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+
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+ return 0;
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+}
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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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+
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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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+
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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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