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The RTEMS Software Engineering Guide specifies that the SPDX license annotation shouldbe the first line of the file and not part of the copyright/license comment block.
73 lines
2.6 KiB
C
73 lines
2.6 KiB
C
/* SPDX-License-Identifier: BSD-2-Clause */
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/**
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* @file
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*
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* @ingroup arm_beagle
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*
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* @brief Shared PWMSS module functions used by PWM, eQEP and eCAP (when added).
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*/
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/*
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* Copyright (c) 2020, 2021 James Fitzsimons <james.fitzsimons@gmail.com>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef LIBBSP_ARM_BEAGLE_PWMSS_H
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#define LIBBSP_ARM_BEAGLE_PWMSS_H
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#ifdef __cplusplus
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extern "C" {
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#endif /* __cplusplus */
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/* The following definitions are bitmasks for the clk control registers for
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* the PWMSS module clocks. All three modules have the same clock control
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* hence the EPMSSx to signify these values are consistent across all
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* EPWMSS instances. */
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#define AM335X_CM_PER_EPWMSSx_CLKCTRL_MODULEMODE_ENABLE (0x2u)
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#define AM335X_CM_PER_EPWMSSx_CLKCTRL_MODULEMODE (0x00000003u)
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#define AM335X_CM_PER_EPWMSSx_CLKCTRL_IDLEST_FUNC (0x0u)
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#define AM335X_CM_PER_EPWMSSx_CLKCTRL_IDLEST_SHIFT (0x00000010u)
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#define AM335X_CM_PER_EPWMSSx_CLKCTRL_IDLEST (0x00030000u)
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/**
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* @brief The set of possible PWM subsystem module
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*
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* Enumerated type to define various instance of pwm module.
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*/
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typedef enum {
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BBB_PWMSS0 = 0,
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BBB_PWMSS1,
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BBB_PWMSS2,
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BBB_PWMSS_COUNT
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} BBB_PWMSS;
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rtems_status_code pwmss_module_clk_config(BBB_PWMSS pwmss_id);
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#ifdef __cplusplus
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}
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#endif /* __cplusplus */
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#endif /* LIBBSP_ARM_BEAGLE_PWMSS_H */
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