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drivers: rtc_qmsi: Move rtc driver apis to unified interface

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patch modifies rtc apis to unified interface.

Signed-off-by: Savinay Dharmappa <savinay.dharmappa@intel.com>
This commit is contained in:
Savinay Dharmappa 2018-11-19 15:12:44 +05:30 • committed by Anas Nashif
commit aa15f3973a
6 changed files with 88 additions and 43 deletions
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2
drivers/rtc/CMakeLists.txt
View file

@ -1,6 +1,4 @@
zephyr_library()
zephyr_library_sources_ifdef(CONFIG_RTC_QMSI rtc_qmsi.c)
zephyr_library_sources_ifdef(CONFIG_RTC_MCUX rtc_mcux.c)
zephyr_library_sources_ifdef(CONFIG_RTC_STM32 rtc_ll_stm32.c)
zephyr_library_sources_ifdef(CONFIG_USERSPACE rtc_handlers.c)

1
drivers/rtc/Kconfig
View file

@ -29,7 +29,6 @@ config RTC_0_NAME
comment "RTC drivers"
source "drivers/rtc/Kconfig.qmsi"
source "drivers/rtc/Kconfig.mcux_rtc"
source "drivers/rtc/Kconfig.stm32_rtc"

20
drivers/rtc/Kconfig.qmsi
View file

@ -1,20 +0,0 @@
config RTC_QMSI
bool "QMSI RTC Driver"
depends on QMSI
help
Build QMSI RTC driver.
if RTC_QMSI
config RTC_QMSI_API_REENTRANCY
bool "RTC shim driver API reentrancy"
help
Enable support for RTC shim driver API reentrancy.
config RTC_PRESCALER
int "Prescaler size"
default 1
help
RTC prescaler used to determine ticks per second
endif

204
drivers/rtc/rtc_qmsi.c
View file

@ -1,204 +0,0 @@
/*
* Copyright (c) 2015 Intel Corporation.
*
* SPDX-License-Identifier: Apache-2.0
*/
#include <errno.h>
#include <device.h>
#include <drivers/ioapic.h>
#include <init.h>
#include <kernel.h>
#include <rtc.h>
#include <power.h>
#include <soc.h>
#include <misc/util.h>
#include "qm_isr.h"
#include "qm_rtc.h"
struct rtc_data {
#ifdef CONFIG_RTC_QMSI_API_REENTRANCY
struct k_sem sem;
#endif
#ifdef CONFIG_DEVICE_POWER_MANAGEMENT
u32_t device_power_state;
#endif
};
#define RTC_HAS_CONTEXT_DATA \
(CONFIG_RTC_QMSI_API_REENTRANCY || CONFIG_DEVICE_POWER_MANAGEMENT)
#if RTC_HAS_CONTEXT_DATA
static struct rtc_data rtc_context;
#define RTC_CONTEXT (&rtc_context)
#else
#define RTC_CONTEXT (NULL)
#endif /* RTC_HAS_CONTEXT_DATA */
#ifdef CONFIG_RTC_QMSI_API_REENTRANCY
#define RP_GET(dev) (&((struct rtc_data *)(dev->driver_data))->sem)
#else
#define RP_GET(dev) (NULL)
#endif
#ifdef CONFIG_DEVICE_POWER_MANAGEMENT
static void rtc_qmsi_set_power_state(struct device *dev, u32_t power_state)
{
struct rtc_data *context = dev->driver_data;
context->device_power_state = power_state;
}
static u32_t rtc_qmsi_get_power_state(struct device *dev)
{
struct rtc_data *context = dev->driver_data;
return context->device_power_state;
}
#else
#define rtc_qmsi_set_power_state(...)
#endif
static void rtc_qmsi_enable(struct device *dev)
{
clk_periph_enable(CLK_PERIPH_RTC_REGISTER | CLK_PERIPH_CLK);
}
static void rtc_qmsi_disable(struct device *dev)
{
clk_periph_disable(CLK_PERIPH_RTC_REGISTER);
}
static int rtc_qmsi_set_config(struct device *dev, struct rtc_config *cfg)
{
qm_rtc_config_t qm_cfg;
int result = 0;
qm_cfg.init_val = cfg->init_val;
qm_cfg.alarm_en = cfg->alarm_enable;
qm_cfg.alarm_val = cfg->alarm_val;
/* Casting callback type due different input parameter from QMSI
* compared aganst the Zephyr callback from void cb(struct device *dev)
* to void cb(void *)
*/
qm_cfg.callback = (void *) cfg->cb_fn;
qm_cfg.callback_data = dev;
/* Set prescaler value. Ideally, the divider should come from struct
* rtc_config instead. It's safe to use RTC_DIVIDER here for now since
* values defined by clk_rtc_div and by QMSI's clk_rtc_div_t match for
* both D2000 and SE.
*/
qm_cfg.prescaler = (clk_rtc_div_t)CONFIG_RTC_PRESCALER - 1;
if (IS_ENABLED(CONFIG_RTC_QMSI_API_REENTRANCY)) {
k_sem_take(RP_GET(dev), K_FOREVER);
}
if (qm_rtc_set_config(QM_RTC_0, &qm_cfg)) {
result = -EIO;
}
if (IS_ENABLED(CONFIG_RTC_QMSI_API_REENTRANCY)) {
k_sem_give(RP_GET(dev));
}
k_busy_wait(60);
return result;
}
static int rtc_qmsi_set_alarm(struct device *dev, const u32_t alarm_val)
{
return qm_rtc_set_alarm(QM_RTC_0, alarm_val);
}
static u32_t rtc_qmsi_read(struct device *dev)
{
return QM_RTC[QM_RTC_0]->rtc_ccvr;
}
static u32_t rtc_qmsi_get_pending_int(struct device *dev)
{
return QM_RTC[QM_RTC_0]->rtc_stat;
}
static const struct rtc_driver_api api = {
.enable = rtc_qmsi_enable,
.disable = rtc_qmsi_disable,
.read = rtc_qmsi_read,
.set_config = rtc_qmsi_set_config,
.set_alarm = rtc_qmsi_set_alarm,
.get_pending_int = rtc_qmsi_get_pending_int,
};
static int rtc_qmsi_init(struct device *dev)
{
if (IS_ENABLED(CONFIG_RTC_QMSI_API_REENTRANCY)) {
k_sem_init(RP_GET(dev), 1, UINT_MAX);
}
IRQ_CONNECT(DT_RTC_0_IRQ, CONFIG_RTC_0_IRQ_PRI,
qm_rtc_0_isr, NULL, DT_RTC_0_IRQ_FLAGS);
/* Unmask RTC interrupt */
irq_enable(DT_RTC_0_IRQ);
/* Route RTC interrupt to the current core */
QM_IR_UNMASK_INTERRUPTS(QM_INTERRUPT_ROUTER->rtc_0_int_mask);
rtc_qmsi_set_power_state(dev, DEVICE_PM_ACTIVE_STATE);
return 0;
}
#ifdef CONFIG_DEVICE_POWER_MANAGEMENT
static qm_rtc_context_t rtc_ctx;
static int rtc_suspend_device(struct device *dev)
{
qm_rtc_save_context(QM_RTC_0, &rtc_ctx);
rtc_qmsi_set_power_state(dev, DEVICE_PM_SUSPEND_STATE);
return 0;
}
static int rtc_resume_device(struct device *dev)
{
qm_rtc_restore_context(QM_RTC_0, &rtc_ctx);
rtc_qmsi_set_power_state(dev, DEVICE_PM_ACTIVE_STATE);
return 0;
}
/*
* Implements the driver control management functionality
* the *context may include IN data or/and OUT data
*/
static int rtc_qmsi_device_ctrl(struct device *dev, u32_t ctrl_command,
void *context)
{
if (ctrl_command == DEVICE_PM_SET_POWER_STATE) {
if (*((u32_t *)context) == DEVICE_PM_SUSPEND_STATE) {
return rtc_suspend_device(dev);
} else if (*((u32_t *)context) == DEVICE_PM_ACTIVE_STATE) {
return rtc_resume_device(dev);
}
} else if (ctrl_command == DEVICE_PM_GET_POWER_STATE) {
*((u32_t *)context) = rtc_qmsi_get_power_state(dev);
return 0;
}
return 0;
}
#endif
DEVICE_DEFINE(rtc, CONFIG_RTC_0_NAME, &rtc_qmsi_init, rtc_qmsi_device_ctrl,
RTC_CONTEXT, NULL, POST_KERNEL, CONFIG_KERNEL_INIT_PRIORITY_DEVICE,
&api);