blob: 657e5c7be2cfb6d7e60c744753a76cbf50c383a1 [file] [log] [blame]
Tom Rini10e47792018-05-06 17:58:06 -04001// SPDX-License-Identifier: GPL-2.0+
Simon Glassc2a8c062015-04-20 12:37:25 -06002/*
3 * (C) Copyright 2015 Google, Inc
4 * Written by Simon Glass <sjg@chromium.org>
Simon Glassc2a8c062015-04-20 12:37:25 -06005 */
6
Tom Riniabb9a042024-05-18 20:20:43 -06007#include <common.h>
Simon Glassc2a8c062015-04-20 12:37:25 -06008#include <dm.h>
9#include <i2c.h>
10#include <rtc.h>
11#include <asm/rtc.h>
Simon Glass39ab8672020-07-07 13:11:48 -060012#include <dm/acpi.h>
Simon Glassc2a8c062015-04-20 12:37:25 -060013
14#define REG_COUNT 0x80
15
16static int sandbox_rtc_get(struct udevice *dev, struct rtc_time *time)
17{
Rasmus Villemoesacffbea2020-07-06 22:01:16 +020018 u8 buf[7];
19 int ret;
20
21 ret = dm_i2c_read(dev, REG_SEC, buf, sizeof(buf));
22 if (ret < 0)
23 return ret;
24
25 time->tm_sec = buf[REG_SEC - REG_SEC];
26 time->tm_min = buf[REG_MIN - REG_SEC];
27 time->tm_hour = buf[REG_HOUR - REG_SEC];
28 time->tm_mday = buf[REG_MDAY - REG_SEC];
29 time->tm_mon = buf[REG_MON - REG_SEC];
30 time->tm_year = buf[REG_YEAR - REG_SEC] + 1900;
31 time->tm_wday = buf[REG_WDAY - REG_SEC];
Simon Glassc2a8c062015-04-20 12:37:25 -060032
33 return 0;
34}
35
36static int sandbox_rtc_set(struct udevice *dev, const struct rtc_time *time)
37{
Rasmus Villemoesacffbea2020-07-06 22:01:16 +020038 u8 buf[7];
Simon Glassc2a8c062015-04-20 12:37:25 -060039 int ret;
40
Rasmus Villemoesacffbea2020-07-06 22:01:16 +020041 buf[REG_SEC - REG_SEC] = time->tm_sec;
42 buf[REG_MIN - REG_SEC] = time->tm_min;
43 buf[REG_HOUR - REG_SEC] = time->tm_hour;
44 buf[REG_MDAY - REG_SEC] = time->tm_mday;
45 buf[REG_MON - REG_SEC] = time->tm_mon;
46 buf[REG_YEAR - REG_SEC] = time->tm_year - 1900;
47 buf[REG_WDAY - REG_SEC] = time->tm_wday;
48
49 ret = dm_i2c_write(dev, REG_SEC, buf, sizeof(buf));
Simon Glassc2a8c062015-04-20 12:37:25 -060050 if (ret < 0)
51 return ret;
52
53 return 0;
54}
55
56static int sandbox_rtc_reset(struct udevice *dev)
57{
58 return dm_i2c_reg_write(dev, REG_RESET, 0);
59}
60
61static int sandbox_rtc_read8(struct udevice *dev, unsigned int reg)
62{
63 return dm_i2c_reg_read(dev, reg);
64}
65
66static int sandbox_rtc_write8(struct udevice *dev, unsigned int reg, int val)
67{
68 return dm_i2c_reg_write(dev, reg, val);
69}
70
Simon Glass39ab8672020-07-07 13:11:48 -060071#if CONFIG_IS_ENABLED(ACPIGEN)
72static int sandbox_rtc_get_name(const struct udevice *dev, char *out_name)
73{
74 return acpi_copy_name(out_name, "RTCC");
75}
76
77struct acpi_ops sandbox_rtc_acpi_ops = {
78 .get_name = sandbox_rtc_get_name,
79};
80#endif
81
Simon Glass65cb7592021-03-15 17:25:30 +130082static int sandbox_rtc_bind(struct udevice *dev)
83{
84#if CONFIG_IS_ENABLED(PLATDATA)
85 struct sandbox_i2c_rtc_plat_data *plat = dev_get_plat(dev);
86
87 /* Set up the emul_idx for i2c_emul_find() */
88 i2c_emul_set_idx(dev, plat->dtplat.sandbox_emul->idx);
89#endif
90
91 return 0;
92}
93
Simon Glassc2a8c062015-04-20 12:37:25 -060094static const struct rtc_ops sandbox_rtc_ops = {
95 .get = sandbox_rtc_get,
96 .set = sandbox_rtc_set,
97 .reset = sandbox_rtc_reset,
98 .read8 = sandbox_rtc_read8,
99 .write8 = sandbox_rtc_write8,
100};
101
102static const struct udevice_id sandbox_rtc_ids[] = {
103 { .compatible = "sandbox-rtc" },
104 { }
105};
106
Simon Glass4d4558e2020-10-03 11:31:36 -0600107U_BOOT_DRIVER(sandbox_rtc) = {
108 .name = "sandbox_rtc",
Simon Glassc2a8c062015-04-20 12:37:25 -0600109 .id = UCLASS_RTC,
110 .of_match = sandbox_rtc_ids,
111 .ops = &sandbox_rtc_ops,
Simon Glass65cb7592021-03-15 17:25:30 +1300112 .bind = sandbox_rtc_bind,
Simon Glass39ab8672020-07-07 13:11:48 -0600113 ACPI_OPS_PTR(&sandbox_rtc_acpi_ops)
Simon Glassc2a8c062015-04-20 12:37:25 -0600114};