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| author | Randall Spangler <rspangler@chromium.org> | 2013-09-06 15:56:48 -0700 |
|---|---|---|
| committer | chrome-internal-fetch <chrome-internal-fetch@google.com> | 2013-09-10 23:46:07 +0000 |
| commit | e6401d2e83939a63cbd156fa193f9768063d9325 (patch) | |
| tree | 334f2a5ed07a79ce8bfc4162e1fc6ddd0ec1373e /include/dma.h | |
| parent | 462133fea54e7a3c27af23373105bf2f673e37e9 (diff) | |
| download | chrome-ec-e6401d2e83939a63cbd156fa193f9768063d9325.tar.gz | |
Initalize DMA before UART
This is in preparation for enabling DMA-based UART transfers, to
improve UART performance on STM32.
BUG=chrome-os-partner:20485
BRANCH=none
TEST=Boot pit. Host commands should still be received; this verifies DMA
is still operational.
Change-Id: Ibc3b2e2cd187547eb61b85e4a086704accd7f2fb
Signed-off-by: Randall Spangler <rspangler@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/168810
Diffstat (limited to 'include/dma.h')
| -rw-r--r-- | include/dma.h | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/include/dma.h b/include/dma.h index 1b03795b36..04c1be2bf9 100644 --- a/include/dma.h +++ b/include/dma.h @@ -2,12 +2,14 @@ * Use of this source code is governed by a BSD-style license that can be * found in the LICENSE file. * - * Register map and API for STM32 processor dma registers + * DMA interface */ #ifndef __CROS_EC_DMA_H #define __CROS_EC_DMA_H +#ifdef CONFIG_DMA + #include "common.h" #include "registers.h" @@ -134,4 +136,10 @@ void dma_disable_tc_interrupt(enum dma_channel channel); */ int dma_wait(enum dma_channel channel); +/** + * Initialize the DMA module. + */ +void dma_init(void); + +#endif /* CONFIG_DMA */ #endif |