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41575d8e4c
This construct is quite long-winded. In earlier days it made some sense since auto-allocation was a strange concept. But with driver model now used pretty universally, we can shorten this to 'auto'. This reduces verbosity and makes it easier to read. Coincidentally it also ensures that every declaration is on one line, thus making dtoc's job easier. Signed-off-by: Simon Glass <sjg@chromium.org>
92 lines
1.8 KiB
C
92 lines
1.8 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Renesas RZ/A1 R7S72100 OSTM Timer driver
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*
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* Copyright (C) 2019 Marek Vasut <marek.vasut@gmail.com>
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*/
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#include <common.h>
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#include <malloc.h>
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#include <asm/io.h>
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#include <dm.h>
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#include <clk.h>
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#include <timer.h>
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#include <linux/bitops.h>
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#define OSTM_CMP 0x00
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#define OSTM_CNT 0x04
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#define OSTM_TE 0x10
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#define OSTM_TS 0x14
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#define OSTM_TT 0x18
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#define OSTM_CTL 0x20
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#define OSTM_CTL_D BIT(1)
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DECLARE_GLOBAL_DATA_PTR;
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struct ostm_priv {
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fdt_addr_t regs;
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};
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static u64 ostm_get_count(struct udevice *dev)
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{
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struct ostm_priv *priv = dev_get_priv(dev);
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return timer_conv_64(readl(priv->regs + OSTM_CNT));
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}
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static int ostm_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 ostm_priv *priv = dev_get_priv(dev);
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#if CONFIG_IS_ENABLED(CLK)
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struct clk clk;
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int ret;
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ret = clk_get_by_index(dev, 0, &clk);
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if (ret)
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return ret;
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uc_priv->clock_rate = clk_get_rate(&clk);
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clk_free(&clk);
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#else
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uc_priv->clock_rate = CONFIG_SYS_CLK_FREQ / 2;
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#endif
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readb(priv->regs + OSTM_CTL);
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writeb(OSTM_CTL_D, priv->regs + OSTM_CTL);
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setbits_8(priv->regs + OSTM_TT, BIT(0));
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writel(0xffffffff, priv->regs + OSTM_CMP);
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setbits_8(priv->regs + OSTM_TS, BIT(0));
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return 0;
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}
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static int ostm_ofdata_to_platdata(struct udevice *dev)
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{
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struct ostm_priv *priv = dev_get_priv(dev);
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priv->regs = dev_read_addr(dev);
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return 0;
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}
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static const struct timer_ops ostm_ops = {
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.get_count = ostm_get_count,
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};
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static const struct udevice_id ostm_ids[] = {
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{ .compatible = "renesas,ostm" },
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{}
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};
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U_BOOT_DRIVER(ostm_timer) = {
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.name = "ostm-timer",
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.id = UCLASS_TIMER,
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.ops = &ostm_ops,
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.probe = ostm_probe,
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.of_match = ostm_ids,
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.ofdata_to_platdata = ostm_ofdata_to_platdata,
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.priv_auto = sizeof(struct ostm_priv),
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};
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