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| author | Bill Richardson <wfrichar@chromium.org> | 2013-10-28 12:48:26 -0700 |
|---|---|---|
| committer | chrome-internal-fetch <chrome-internal-fetch@google.com> | 2013-10-28 23:38:16 +0000 |
| commit | f20ed63c17fe0af9acee3ce774b73d70545e5ea3 (patch) | |
| tree | ec8f8f7ab3a3b9beda10b2a6dd7ebf81cae6fd8d /chip/stm32/pwm_chip.h | |
| parent | 6aaab6ab0b12f7cc71b126dd19ebf8e50b7462e4 (diff) | |
| download | chrome-ec-f20ed63c17fe0af9acee3ce774b73d70545e5ea3.tar.gz | |
Rename pwm_data.h to pwm_chip.h
To conform to our mutating naming conventions, let's rename the
chip-specific PWM header file to have the string "_chip" in it.
BUG=chrome-os-partner:18343
BRANCH=none
TEST=build all platforms; pass unit tests
Change-Id: I6584be8e54fd24c8638559817e150c707bc0edb5
Signed-off-by: Bill Richardson <wfrichar@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/174884
Reviewed-by: Randall Spangler <rspangler@chromium.org>
Diffstat (limited to 'chip/stm32/pwm_chip.h')
| -rw-r--r-- | chip/stm32/pwm_chip.h | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/chip/stm32/pwm_chip.h b/chip/stm32/pwm_chip.h new file mode 100644 index 0000000000..d588dabeaa --- /dev/null +++ b/chip/stm32/pwm_chip.h @@ -0,0 +1,37 @@ +/* Copyright (c) 2013 The Chromium OS Authors. All rights reserved. + * Use of this source code is governed by a BSD-style license that can be + * found in the LICENSE file. + */ + +/* STM32-specific PWM module for Chrome EC */ + +#ifndef __CROS_EC_STM32_PWM_H +#define __CROS_EC_STM32_PWM_H + +/* Data structure to define PWM channels. */ +struct pwm_t { + /* + * Timer powering the PWM channel. Must use STM32_TIM(x) to + * initialize + */ + struct { + int id; + uintptr_t base; + } tim; + /* Channel ID within the timer */ + int channel; + /* PWM channel flags. See include/pwm.h */ + uint32_t flags; + /* GPIO pin corresponding to the PWM channel */ + enum gpio_signal pin; +}; + +extern const struct pwm_t pwm_channels[]; + +/* Macro to fill in both timer ID and register base */ +#define STM32_TIM(x) {x, STM32_TIM_BASE(x)} + +/* Plain ID mapping for readability */ +#define STM32_TIM_CH(x) (x) + +#endif /* __CROS_EC_STM32_PWM_H */ |