1 /*
2 * Copyright (c) 2019 Vestas Wind Systems A/S
3 *
4 * Based on clock_control_rv32m1_pcc.c, which is:
5 * Copyright (c) 2018 Foundries.io
6 *
7 * SPDX-License-Identifier: Apache-2.0
8 */
9
10 #define DT_DRV_COMPAT nxp_kinetis_pcc
11
12 #include <errno.h>
13 #include <soc.h>
14 #include <zephyr/drivers/clock_control.h>
15 #include <fsl_clock.h>
16
17 #define LOG_LEVEL CONFIG_CLOCK_CONTROL_LOG_LEVEL
18 #include <zephyr/logging/log.h>
19 LOG_MODULE_REGISTER(clock_control_mcux_pcc);
20
21 struct mcux_pcc_config {
22 uint32_t base_address;
23 };
24
25 #define DEV_BASE(dev) (((struct mcux_pcc_config *)(dev->config))->base_address)
26 #ifndef MAKE_PCC_REGADDR
27 #define MAKE_PCC_REGADDR(base, offset) ((base) + (offset))
28 #endif
29
clock_ip(const struct device * dev,clock_control_subsys_t sub_system)30 static inline clock_ip_name_t clock_ip(const struct device *dev,
31 clock_control_subsys_t sub_system)
32 {
33 uint32_t offset = POINTER_TO_UINT(sub_system);
34
35 return MAKE_PCC_REGADDR(DEV_BASE(dev), offset);
36 }
37
mcux_pcc_on(const struct device * dev,clock_control_subsys_t sub_system)38 static int mcux_pcc_on(const struct device *dev,
39 clock_control_subsys_t sub_system)
40 {
41 CLOCK_EnableClock(clock_ip(dev, sub_system));
42 return 0;
43 }
44
mcux_pcc_off(const struct device * dev,clock_control_subsys_t sub_system)45 static int mcux_pcc_off(const struct device *dev,
46 clock_control_subsys_t sub_system)
47 {
48 CLOCK_DisableClock(clock_ip(dev, sub_system));
49 return 0;
50 }
51
mcux_pcc_get_rate(const struct device * dev,clock_control_subsys_t sub_system,uint32_t * rate)52 static int mcux_pcc_get_rate(const struct device *dev,
53 clock_control_subsys_t sub_system,
54 uint32_t *rate)
55 {
56 *rate = CLOCK_GetIpFreq(clock_ip(dev, sub_system));
57 return 0;
58 }
59
60 static const struct clock_control_driver_api mcux_pcc_api = {
61 .on = mcux_pcc_on,
62 .off = mcux_pcc_off,
63 .get_rate = mcux_pcc_get_rate,
64 };
65
66 #define MCUX_PCC_INIT(inst) \
67 static const struct mcux_pcc_config mcux_pcc##inst##_config = { \
68 .base_address = DT_INST_REG_ADDR(inst) \
69 }; \
70 \
71 DEVICE_DT_INST_DEFINE(inst, \
72 NULL, \
73 NULL, \
74 NULL, &mcux_pcc##inst##_config, \
75 PRE_KERNEL_1, \
76 CONFIG_CLOCK_CONTROL_INIT_PRIORITY, \
77 &mcux_pcc_api);
78
79 DT_INST_FOREACH_STATUS_OKAY(MCUX_PCC_INIT)
80
