8833e44f6d
Add the initial SoC support for the STM32L4XX family. The code was tested on STM32L476RG, but should work on any STM32L4XX currently available. This implementation was inspired by the stm32f1x implementation. Change-Id: Id6670bce0c423617284e8467a9c461531f948e0f Signed-off-by: Fabien Parent <fparent@baylibre.com> Signed-off-by: Kumar Gala <kumar.gala@linaro.org> Signed-off-by: Erwan Gouriou <erwan.gouriou@linaro.org>
77 lines
2.1 KiB
C
77 lines
2.1 KiB
C
/*
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* Copyright (c) 2016 Open-RnD Sp. z o.o.
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* Copyright (c) 2016 BayLibre, SAS
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include <errno.h>
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#include "soc.h"
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#include "soc_pinmux.h"
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#include <device.h>
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#include <misc/util.h>
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#include <pinmux/stm32/pinmux_stm32.h>
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#include <drivers/clock_control/stm32_clock_control.h>
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/**
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* @brief pin configuration
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*/
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static const struct stm32_pinmux_conf pins[] = {
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};
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int stm32_get_pin_config(int pin, int func)
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{
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/* GPIO function is always available, to save space it is not
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* listed in alternate functions array
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*/
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if (func == STM32_PINMUX_FUNC_GPIO) {
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return STM32L4X_PIN_CONFIG_BIAS_HIGH_IMPEDANCE;
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}
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/* analog function is another 'known' setting */
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if (func == STM32_PINMUX_FUNC_ANALOG) {
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return STM32L4X_PIN_CONFIG_ANALOG;
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}
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for (int i = 0; i < ARRAY_SIZE(pins); i++) {
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if (pins[i].pin == pin) {
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if ((func - 1) >= pins[i].nfuncs) {
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return -EINVAL;
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}
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return pins[i].funcs[func - 1];
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}
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}
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return -EINVAL;
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}
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clock_control_subsys_t stm32_get_port_clock(int port)
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{
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const clock_control_subsys_t ports_to_clock[STM32_PORTS_MAX] = {
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UINT_TO_POINTER(STM32L4X_CLOCK_SUBSYS_GPIOA),
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UINT_TO_POINTER(STM32L4X_CLOCK_SUBSYS_GPIOB),
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UINT_TO_POINTER(STM32L4X_CLOCK_SUBSYS_GPIOC),
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UINT_TO_POINTER(STM32L4X_CLOCK_SUBSYS_GPIOD),
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UINT_TO_POINTER(STM32L4X_CLOCK_SUBSYS_GPIOE),
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UINT_TO_POINTER(STM32L4X_CLOCK_SUBSYS_GPIOF),
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UINT_TO_POINTER(STM32L4X_CLOCK_SUBSYS_GPIOG),
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UINT_TO_POINTER(STM32L4X_CLOCK_SUBSYS_GPIOH),
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};
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if (port > STM32_PORTH) {
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return NULL;
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}
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return ports_to_clock[port];
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}
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