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https://github.com/brain-hackers/u-boot-brain
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caa4daa2ae
We use 'priv' for private data but often use 'platdata' for platform data. We can't really use 'pdata' since that is ambiguous (it could mean private or platform data). Rename some of the latter variables to end with 'plat' for consistency. 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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.plat_auto = sizeof(struct microchip_flexcom_platdata),
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};
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