1 /*
2 * Copyright (c) 2023 Nordic Semiconductor ASA
3 *
4 * SPDX-License-Identifier: Apache-2.0
5 */
6
7 #ifndef ZEPHYR_DRIVERS_USB_DEVICE_USB_DC_DW_STM32_H
8 #define ZEPHYR_DRIVERS_USB_DEVICE_USB_DC_DW_STM32_H
9
10 #include <stdint.h>
11 #include <zephyr/device.h>
12 #include <zephyr/drivers/clock_control/stm32_clock_control.h>
13
14 #include "usb_dw_registers.h"
15
16 struct usb_dw_stm32_clk {
17 const struct device *const dev;
18 const struct stm32_pclken *const pclken;
19 size_t pclken_len;
20 };
21
clk_enable_st_stm32f4_fsotg(const struct usb_dw_stm32_clk * const clk)22 static inline int clk_enable_st_stm32f4_fsotg(const struct usb_dw_stm32_clk *const clk)
23 {
24 int ret;
25
26 if (!device_is_ready(clk->dev)) {
27 return -ENODEV;
28 }
29
30 if (clk->pclken_len > 1) {
31 uint32_t clk_rate;
32
33 ret = clock_control_configure(clk->dev,
34 (void *)&clk->pclken[1],
35 NULL);
36 if (ret) {
37 return ret;
38 }
39
40 ret = clock_control_get_rate(clk->dev,
41 (void *)&clk->pclken[1],
42 &clk_rate);
43 if (ret) {
44 return ret;
45 }
46
47 if (clk_rate != MHZ(48)) {
48 return -ENOTSUP;
49 }
50 }
51
52 return clock_control_on(clk->dev, (void *)&clk->pclken[0]);
53 }
54
pwr_on_st_stm32f4_fsotg(struct usb_dw_reg * const base)55 static inline int pwr_on_st_stm32f4_fsotg(struct usb_dw_reg *const base)
56 {
57 base->ggpio |= USB_DW_GGPIO_STM32_PWRDWN | USB_DW_GGPIO_STM32_VBDEN;
58
59 return 0;
60 }
61
62 #define QUIRK_ST_STM32F4_FSOTG_DEFINE(n) \
63 static const struct stm32_pclken pclken_##n[] = STM32_DT_INST_CLOCKS(n);\
64 \
65 static const struct usb_dw_stm32_clk stm32f4_clk_##n = { \
66 .dev = DEVICE_DT_GET(STM32_CLOCK_CONTROL_NODE), \
67 .pclken = pclken_##n, \
68 .pclken_len = DT_INST_NUM_CLOCKS(n), \
69 }; \
70 \
71 static int clk_enable_st_stm32f4_fsotg_##n(void) \
72 { \
73 return clk_enable_st_stm32f4_fsotg(&stm32f4_clk_##n); \
74 }
75
76 #define USB_DW_QUIRK_ST_STM32F4_FSOTG_DEFINE(n) \
77 COND_CODE_1(DT_NODE_HAS_COMPAT(DT_DRV_INST(n), st_stm32f4_fsotg), \
78 (QUIRK_ST_STM32F4_FSOTG_DEFINE(n)), ())
79
80 #endif /* ZEPHYR_DRIVERS_USB_DEVICE_USB_DC_DW_STM32_H */
81
