diff options
Diffstat (limited to 'nuttx/arch/arm/src/stm32/stm32_sdio.c')
| -rw-r--r-- | nuttx/arch/arm/src/stm32/stm32_sdio.c | 58 |
1 files changed, 50 insertions, 8 deletions
diff --git a/nuttx/arch/arm/src/stm32/stm32_sdio.c b/nuttx/arch/arm/src/stm32/stm32_sdio.c index e08bcb307..9dbdb6b20 100644 --- a/nuttx/arch/arm/src/stm32/stm32_sdio.c +++ b/nuttx/arch/arm/src/stm32/stm32_sdio.c @@ -1,8 +1,8 @@ /**************************************************************************** * arch/arm/src/stm32/stm32_sdio.c * - * Copyright (C) 2009, 2011 Gregory Nutt. All rights reserved. - * Author: Gregory Nutt <spudmonkey@racsa.co.cr> + * Copyright (C) 2009, 2011-2012 Gregory Nutt. All rights reserved. + * Author: Gregory Nutt <gnutt@nuttx.org> * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions @@ -89,7 +89,13 @@ #endif #ifndef CONFIG_SDIO_DMAPRIO -# define CONFIG_SDIO_DMAPRIO DMA_CCR_PRIMED +# if defined(CONFIG_STM32_STM32F10XX) +# define CONFIG_SDIO_DMAPRIO DMA_CCR_PRIMED +# elif defined(CONFIG_STM32_STM32F40XX) +# define CONFIG_SDIO_DMAPRIO DMA_SCR_PRIMED +# else +# error "Unknown STM32 DMA" +# endif #endif #if !defined(CONFIG_DEBUG_FS) || !defined(CONFIG_DEBUG_VERBOSE) @@ -105,7 +111,7 @@ * be defined in the board-specific board.h header file: SDIO_INIT_CLKDIV, * SDIO_MMCXFR_CLKDIV, and SDIO_SDXFR_CLKDIV. */ - + #define STM32_CLCKCR_INIT (SDIO_INIT_CLKDIV|SDIO_CLKCR_RISINGEDGE|\ SDIO_CLKCR_WIDBUS_D1) #define SDIO_CLKCR_MMCXFR (SDIO_MMCXFR_CLKDIV|SDIO_CLKCR_RISINGEDGE|\ @@ -124,13 +130,49 @@ #define SDIO_DTIMER_DATATIMEOUT (0x000fffff) -/* DMA CCR register settings */ +/* DMA channel/stream configuration register settings. The following + * must be selected. The DMA driver will select the remaining fields. + * + * - 32-bit DMA + * - Memory increment + * - Direction (memory-to-peripheral, peripheral-to-memory) + * - Memory burst size (F4 only) + */ -#define SDIO_RXDMA32_CONFIG (CONFIG_SDIO_DMAPRIO|DMA_CCR_MSIZE_32BITS|\ +/* STM32 F1 channel configuration register (CCR) settings */ + +#if defined(CONFIG_STM32_STM32F10XX) +# define SDIO_RXDMA32_CONFIG (CONFIG_SDIO_DMAPRIO|DMA_CCR_MSIZE_32BITS|\ DMA_CCR_PSIZE_32BITS|DMA_CCR_MINC) -#define SDIO_TXDMA32_CONFIG (CONFIG_SDIO_DMAPRIO|DMA_CCR_MSIZE_32BITS|\ +# define SDIO_TXDMA32_CONFIG (CONFIG_SDIO_DMAPRIO|DMA_CCR_MSIZE_32BITS|\ DMA_CCR_PSIZE_32BITS|DMA_CCR_MINC|DMA_CCR_DIR) +/* STM32 F4 stream configuration register (SCR) settings */ + +#elif defined(CONFIG_STM32_STM32F40XX) +# define SDIO_RXDMA32_CONFIG (CONFIG_SDIO_DMAPRIO|DMA_SCR_MSIZE_32BITS|\ + DMA_SCR_PSIZE_32BITS|DMA_SCR_MINC|DMA_SCR_DIR_P2M|\ + DMA_SCR_PBURST_SINGLE|DMA_SCR_PBURST_INCR8) +# define SDIO_TXDMA32_CONFIG (CONFIG_SDIO_DMAPRIO|DMA_SCR_MSIZE_32BITS|\ + DMA_SCR_PSIZE_32BITS|DMA_SCR_MINC|DMA_SCR_DIR_M2P|\ + DMA_SCR_PBURST_SINGLE|DMA_SCR_PBURST_INCR8) +#else +# error "Unknown STM32 DMA" +#endif + +/* SDIO DMA Channel/Stream selection. For the the case of the STM32 F4, there + * are multiple DMA stream options that must be dis-ambiguated in the board.h + * file. + */ + +#if defined(CONFIG_STM32_STM32F10XX) +# define SDIO_DMACHAN DMACHAN_SDIO +#elif defined(CONFIG_STM32_STM32F40XX) +# define SDIO_DMACHAN DMAMAP_SDIO +#else +# error "Unknown STM32 DMA" +#endif + /* FIFO sizes */ #define SDIO_HALFFIFO_WORDS (8) @@ -2617,7 +2659,7 @@ FAR struct sdio_dev_s *sdio_initialize(int slotno) /* Allocate a DMA channel */ #ifdef CONFIG_SDIO_DMA - priv->dma = stm32_dmachannel(DMACHAN_SDIO); + priv->dma = stm32_dmachannel(SDIO_DMACHAN); #endif /* Configure GPIOs for 4-bit, wide-bus operation (the chip is capable of |