diff options
| author | Guillaume Revaillot <revaillot@archos.com> | 2019-06-11 11:24:53 +0300 |
|---|---|---|
| committer | Karl Palsson <karlp@tweak.net.au> | 2019-06-17 14:44:44 +0300 |
| commit | e06898d9a448d1ed0de7a1c16f6979b091e20b40 (patch) | |
| tree | 34daac34630a5c9d4ec0f5f026c1d6de24303ae4 /include | |
| parent | 6198f2575f5c8ee17b3a6700252aa23bd33a395f (diff) | |
stm32: dma: cselr: factorize register definition.
F09x and L4 share the same cselr register, as well as some L0s, factorize
definitions in a new shared header and add helpers.
fyi, that register allows to redefine dma channel peripheral mapping - see
device datasheet for mapping tables.
Diffstat (limited to 'include')
| -rw-r--r-- | include/libopencm3/stm32/common/dma_common_csel.h | 54 | ||||
| -rw-r--r-- | include/libopencm3/stm32/f0/dma.h | 6 | ||||
| -rw-r--r-- | include/libopencm3/stm32/l4/dma.h | 6 |
3 files changed, 56 insertions, 10 deletions
diff --git a/include/libopencm3/stm32/common/dma_common_csel.h b/include/libopencm3/stm32/common/dma_common_csel.h new file mode 100644 index 00000000..04d93caf --- /dev/null +++ b/include/libopencm3/stm32/common/dma_common_csel.h @@ -0,0 +1,54 @@ +/** @addtogroup dma_defines +*/ +/* + * This file is part of the libopencm3 project. + * + * This library is free software: you can redistribute it and/or modify + * it under the terms of the GNU Lesser General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public License + * along with this library. If not, see <http://www.gnu.org/licenses/>. + */ + +/* THIS FILE SHOULD NOT BE INCLUDED DIRECTLY, BUT ONLY VIA DMA.H +The order of header inclusion is important. dma.h includes the device +specific memorymap.h header before including this header file.*/ + +/**@{*/ + +/** @cond */ +#ifdef LIBOPENCM3_DMA_H +/** @endcond */ +#pragma once + + +/* DMA channel selection register (DMAx_CSELR) */ +#define DMA_CSELR(dma_base) MMIO32((dma_base) + 0xA8) +#define DMA1_CSELR DMA_CSELR(DMA1) +#define DMA2_CSELR DMA_CSELR(DMA2) + +/* --- DMA_CSELR values -------------------------------------------- */ + +#define DMA_CSELR_CxS_SHIFT(channel) (4 * ((channel) - 1)) +#define DMA_CSELR_CxS_MASK (0x0f) + +/* --- Function prototypes ------------------------------------------------- */ + +BEGIN_DECLS + +END_DECLS + +/** @cond */ +#else +#warning "dma_common_csel.h should not be included explicitly, only via dma.h" +#endif +/** @endcond */ + +/**@}*/ diff --git a/include/libopencm3/stm32/f0/dma.h b/include/libopencm3/stm32/f0/dma.h index 001cbfc2..d309bf71 100644 --- a/include/libopencm3/stm32/f0/dma.h +++ b/include/libopencm3/stm32/f0/dma.h @@ -32,11 +32,7 @@ #define LIBOPENCM3_DMA_H #include <libopencm3/stm32/common/dma_common_l1f013.h> - -/* DMA channel selection register (DMAx_CSELR) */ -#define DMA_CSELR(dma_base) MMIO32((dma_base) + 0xA8) -#define DMA1_CSELR DMA_CSELR(DMA1) -#define DMA2_CSELR DMA_CSELR(DMA2) +#include <libopencm3/stm32/common/dma_common_csel.h> #endif diff --git a/include/libopencm3/stm32/l4/dma.h b/include/libopencm3/stm32/l4/dma.h index 3a5ee8d1..d8485a43 100644 --- a/include/libopencm3/stm32/l4/dma.h +++ b/include/libopencm3/stm32/l4/dma.h @@ -33,10 +33,6 @@ #define LIBOPENCM3_DMA_H #include <libopencm3/stm32/common/dma_common_l1f013.h> - -/* DMA channel selection register (DMAx_CSELR) */ -#define DMA_CSELR(dma_base) MMIO32((dma_base) + 0xA8) -#define DMA1_CSELR DMA_CSELR(DMA1) -#define DMA2_CSELR DMA_CSELR(DMA2) +#include <libopencm3/stm32/common/dma_common_csel.h> #endif |