mirror of
https://github.com/AsahiLinux/u-boot
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fbe27a54eb
Add a simple test that we can obtain the correct parent for an I2C device. This requires updating the driver names to match the compatible strings, adding them to the devicetree and enabling a few options. Signed-off-by: Simon Glass <sjg@chromium.org>
101 lines
2.2 KiB
C
101 lines
2.2 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* (C) Copyright 2015 Google, Inc
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* Written by Simon Glass <sjg@chromium.org>
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*/
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#include <common.h>
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#include <dm.h>
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#include <i2c.h>
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#include <rtc.h>
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#include <asm/rtc.h>
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#include <dm/acpi.h>
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#define REG_COUNT 0x80
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static int sandbox_rtc_get(struct udevice *dev, struct rtc_time *time)
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{
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u8 buf[7];
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int ret;
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ret = dm_i2c_read(dev, REG_SEC, buf, sizeof(buf));
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if (ret < 0)
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return ret;
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time->tm_sec = buf[REG_SEC - REG_SEC];
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time->tm_min = buf[REG_MIN - REG_SEC];
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time->tm_hour = buf[REG_HOUR - REG_SEC];
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time->tm_mday = buf[REG_MDAY - REG_SEC];
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time->tm_mon = buf[REG_MON - REG_SEC];
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time->tm_year = buf[REG_YEAR - REG_SEC] + 1900;
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time->tm_wday = buf[REG_WDAY - REG_SEC];
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return 0;
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}
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static int sandbox_rtc_set(struct udevice *dev, const struct rtc_time *time)
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{
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u8 buf[7];
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int ret;
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buf[REG_SEC - REG_SEC] = time->tm_sec;
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buf[REG_MIN - REG_SEC] = time->tm_min;
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buf[REG_HOUR - REG_SEC] = time->tm_hour;
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buf[REG_MDAY - REG_SEC] = time->tm_mday;
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buf[REG_MON - REG_SEC] = time->tm_mon;
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buf[REG_YEAR - REG_SEC] = time->tm_year - 1900;
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buf[REG_WDAY - REG_SEC] = time->tm_wday;
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ret = dm_i2c_write(dev, REG_SEC, buf, sizeof(buf));
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if (ret < 0)
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return ret;
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return 0;
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}
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static int sandbox_rtc_reset(struct udevice *dev)
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{
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return dm_i2c_reg_write(dev, REG_RESET, 0);
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}
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static int sandbox_rtc_read8(struct udevice *dev, unsigned int reg)
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{
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return dm_i2c_reg_read(dev, reg);
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}
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static int sandbox_rtc_write8(struct udevice *dev, unsigned int reg, int val)
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{
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return dm_i2c_reg_write(dev, reg, val);
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}
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#if CONFIG_IS_ENABLED(ACPIGEN)
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static int sandbox_rtc_get_name(const struct udevice *dev, char *out_name)
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{
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return acpi_copy_name(out_name, "RTCC");
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}
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struct acpi_ops sandbox_rtc_acpi_ops = {
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.get_name = sandbox_rtc_get_name,
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};
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#endif
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static const struct rtc_ops sandbox_rtc_ops = {
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.get = sandbox_rtc_get,
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.set = sandbox_rtc_set,
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.reset = sandbox_rtc_reset,
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.read8 = sandbox_rtc_read8,
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.write8 = sandbox_rtc_write8,
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};
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static const struct udevice_id sandbox_rtc_ids[] = {
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{ .compatible = "sandbox-rtc" },
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{ }
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};
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U_BOOT_DRIVER(sandbox_rtc) = {
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.name = "sandbox_rtc",
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.id = UCLASS_RTC,
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.of_match = sandbox_rtc_ids,
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.ops = &sandbox_rtc_ops,
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ACPI_OPS_PTR(&sandbox_rtc_acpi_ops)
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};
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