| /* quark_se_clock_control.c - Clock controller driver for Quark SE */ |
| |
| /* |
| * Copyright (c) 2015 Intel Corporation. |
| * |
| * SPDX-License-Identifier: Apache-2.0 |
| */ |
| |
| #include <kernel.h> |
| #include <arch/cpu.h> |
| |
| #include <misc/__assert.h> |
| #include <soc.h> |
| #include <device.h> |
| #include <init.h> |
| |
| #include <sys_io.h> |
| |
| #include <clock_control.h> |
| #include <clock_control/quark_se_clock_control.h> |
| |
| #define LOG_LEVEL CONFIG_CLOCK_CONTROL_LOG_LEVEL |
| #include <logging/log.h> |
| LOG_MODULE_REGISTER(clock_control); |
| |
| #ifdef CONFIG_ARC |
| #define WRITE(__data, __base_address) \ |
| sys_out32(__data, __base_address) |
| #define TEST_CLEAR_BIT(__base_address, __bit) \ |
| sys_io_test_and_clear_bit(__base_address, __bit) |
| #else |
| #define WRITE(__data, __base_address) \ |
| sys_write32(__data, __base_address) |
| #define TEST_CLEAR_BIT(__base_address, __bit) \ |
| sys_test_and_clear_bit(__base_address, __bit) |
| #endif /* CONFIG_ARC */ |
| |
| struct quark_se_clock_control_config { |
| u32_t base_address; |
| }; |
| |
| static inline int quark_se_clock_control_on(struct device *dev, |
| clock_control_subsys_t sub_system) |
| { |
| const struct quark_se_clock_control_config *info = |
| dev->config->config_info; |
| u32_t subsys = POINTER_TO_INT(sub_system); |
| |
| if (sub_system == CLOCK_CONTROL_SUBSYS_ALL) { |
| LOG_DBG("Enabling all clock gates on dev %p", dev); |
| WRITE(0xffffffff, info->base_address); |
| |
| return 0; |
| } |
| |
| LOG_DBG("Enabling clock gate on dev %p subsystem %u", dev, subsys); |
| |
| return TEST_CLEAR_BIT(info->base_address, subsys); |
| } |
| |
| static inline int quark_se_clock_control_off(struct device *dev, |
| clock_control_subsys_t sub_system) |
| { |
| const struct quark_se_clock_control_config *info = |
| dev->config->config_info; |
| u32_t subsys = POINTER_TO_INT(sub_system); |
| |
| if (sub_system == CLOCK_CONTROL_SUBSYS_ALL) { |
| LOG_DBG("Disabling all clock gates on dev %p", dev); |
| WRITE(0x00000000, info->base_address); |
| |
| return 0; |
| } |
| |
| LOG_DBG("clock gate on dev %p subsystem %u", dev, subsys); |
| |
| return TEST_CLEAR_BIT(info->base_address, subsys); |
| } |
| |
| static const struct clock_control_driver_api quark_se_clock_control_api = { |
| .on = quark_se_clock_control_on, |
| .off = quark_se_clock_control_off, |
| .get_rate = NULL, |
| }; |
| |
| int quark_se_clock_control_init(struct device *dev) |
| { |
| LOG_DBG("Quark_SE clock controller on: %p", dev); |
| return 0; |
| } |
| |
| #ifdef CONFIG_CLOCK_CONTROL_QUARK_SE_PERIPHERAL |
| |
| static struct quark_se_clock_control_config clock_quark_se_peripheral_config = { |
| .base_address = CLOCK_PERIPHERAL_BASE_ADDR |
| }; |
| |
| DEVICE_AND_API_INIT(clock_quark_se_peripheral, |
| CONFIG_CLOCK_CONTROL_QUARK_SE_PERIPHERAL_DRV_NAME, |
| &quark_se_clock_control_init, |
| NULL, &clock_quark_se_peripheral_config, |
| PRE_KERNEL_1, CONFIG_KERNEL_INIT_PRIORITY_DEVICE, |
| &quark_se_clock_control_api); |
| |
| #endif /* CONFIG_CLOCK_CONTROL_QUARK_SE_PERIPHERAL */ |
| #ifdef CONFIG_CLOCK_CONTROL_QUARK_SE_EXTERNAL |
| |
| static struct quark_se_clock_control_config clock_quark_se_external_config = { |
| .base_address = CLOCK_EXTERNAL_BASE_ADDR |
| }; |
| |
| DEVICE_AND_API_INIT(clock_quark_se_external, |
| CONFIG_CLOCK_CONTROL_QUARK_SE_EXTERNAL_DRV_NAME, |
| &quark_se_clock_control_init, |
| NULL, &clock_quark_se_external_config, |
| PRE_KERNEL_1, CONFIG_KERNEL_INIT_PRIORITY_DEVICE, |
| &quark_se_clock_control_api); |
| |
| #endif /* CONFIG_CLOCK_CONTROL_QUARK_SE_EXTERNAL */ |
| #ifdef CONFIG_CLOCK_CONTROL_QUARK_SE_SENSOR |
| |
| static struct quark_se_clock_control_config clock_quark_se_sensor_config = { |
| .base_address = CLOCK_SENSOR_BASE_ADDR |
| }; |
| |
| DEVICE_AND_API_INIT(clock_quark_se_sensor, |
| CONFIG_CLOCK_CONTROL_QUARK_SE_SENSOR_DRV_NAME, |
| &quark_se_clock_control_init, |
| NULL, &clock_quark_se_sensor_config, |
| PRE_KERNEL_1, CONFIG_KERNEL_INIT_PRIORITY_DEVICE, |
| &quark_se_clock_control_api); |
| |
| #endif /* CONFIG_CLOCK_CONTROL_QUARK_SE_SENSOR */ |