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>
67 lines
1.5 KiB
C
67 lines
1.5 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* (C) Copyright 2019, Microchip Technology, Inc.
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* Author: Eugen Hristev <eugen.hristev@microchip.com>
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*/
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#include <common.h>
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#include <dm.h>
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#include <errno.h>
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#include <log.h>
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#include <misc.h>
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#include <asm/io.h>
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#include <linux/err.h>
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struct microchip_flexcom_regs {
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u32 cr;
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};
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struct microchip_flexcom_platdata {
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struct microchip_flexcom_regs *regs;
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u32 flexcom_mode;
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};
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static int microchip_flexcom_ofdata_to_platdata(struct udevice *dev)
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{
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struct microchip_flexcom_platdata *plat = dev_get_platdata(dev);
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int ret;
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plat->regs = map_physmem(dev_read_addr(dev),
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sizeof(struct microchip_flexcom_regs),
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MAP_NOCACHE);
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ret = dev_read_u32(dev, "atmel,flexcom-mode", &plat->flexcom_mode);
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if (IS_ERR_VALUE(ret)) {
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debug("Missing atmel,flexcom-mode property\n");
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return ret;
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}
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/*
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* The mode must have only 2 bits. If any other bits are set,
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* the value is not supported.
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*/
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if (plat->flexcom_mode & 0xfffffffc) {
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debug("Wrong atmel,flexcom-mode property\n");
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return -EINVAL;
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}
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writel(plat->flexcom_mode, &plat->regs->cr);
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return 0;
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}
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static const struct udevice_id microchip_flexcom_ids[] = {
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{ .compatible = "atmel,sama5d2-flexcom" },
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{ .compatible = "microchip,flexcom" },
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{}
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};
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U_BOOT_DRIVER(microchip_flexcom) = {
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.name = "microchip_flexcom",
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.id = UCLASS_MISC,
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.of_match = microchip_flexcom_ids,
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.ofdata_to_platdata = microchip_flexcom_ofdata_to_platdata,
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.platdata_auto = sizeof(struct microchip_flexcom_platdata),
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};
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