diff options
Diffstat (limited to 'arch/m68k')
| -rw-r--r-- | arch/m68k/include/asm/dma.h | 54 |
1 files changed, 27 insertions, 27 deletions
diff --git a/arch/m68k/include/asm/dma.h b/arch/m68k/include/asm/dma.h index 3b85f6e6c09..6fbdfe89510 100644 --- a/arch/m68k/include/asm/dma.h +++ b/arch/m68k/include/asm/dma.h @@ -177,21 +177,21 @@ static __inline__ void set_dma_mode(unsigned int dmanr, char mode) dmabp = (unsigned char *) dma_base_addr[dmanr]; dmawp = (unsigned short *) dma_base_addr[dmanr]; - // Clear config errors + /* Clear config errors */ dmabp[MCFDMA_DSR] = MCFDMA_DSR_DONE; - // Set command register + /* Set command register */ dmawp[MCFDMA_DCR] = - MCFDMA_DCR_INT | // Enable completion irq - MCFDMA_DCR_CS | // Force one xfer per request - MCFDMA_DCR_AA | // Enable auto alignment - // single-address-mode + MCFDMA_DCR_INT | /* Enable completion irq */ + MCFDMA_DCR_CS | /* Force one xfer per request */ + MCFDMA_DCR_AA | /* Enable auto alignment */ + /* single-address-mode */ ((mode & DMA_MODE_SINGLE_BIT) ? MCFDMA_DCR_SAA : 0) | - // sets s_rw (-> r/w) high if Memory to I/0 + /* sets s_rw (-> r/w) high if Memory to I/0 */ ((mode & DMA_MODE_WRITE_BIT) ? MCFDMA_DCR_S_RW : 0) | - // Memory to I/O or I/O to Memory + /* Memory to I/O or I/O to Memory */ ((mode & DMA_MODE_WRITE_BIT) ? MCFDMA_DCR_SINC : MCFDMA_DCR_DINC) | - // 32 bit, 16 bit or 8 bit transfers + /* 32 bit, 16 bit or 8 bit transfers */ ((mode & DMA_MODE_WORD_BIT) ? MCFDMA_DCR_SSIZE_WORD : ((mode & DMA_MODE_LONG_BIT) ? MCFDMA_DCR_SSIZE_LONG : MCFDMA_DCR_SSIZE_BYTE)) | @@ -219,16 +219,16 @@ static __inline__ void set_dma_addr(unsigned int dmanr, unsigned int a) dmawp = (unsigned short *) dma_base_addr[dmanr]; dmalp = (unsigned int *) dma_base_addr[dmanr]; - // Determine which address registers are used for memory/device accesses + /* Determine which address registers are used for memory/device accesses */ if (dmawp[MCFDMA_DCR] & MCFDMA_DCR_SINC) { - // Source incrementing, must be memory + /* Source incrementing, must be memory */ dmalp[MCFDMA_SAR] = a; - // Set dest address, must be device + /* Set dest address, must be device */ dmalp[MCFDMA_DAR] = dma_device_address[dmanr]; } else { - // Destination incrementing, must be memory + /* Destination incrementing, must be memory */ dmalp[MCFDMA_DAR] = a; - // Set source address, must be device + /* Set source address, must be device */ dmalp[MCFDMA_SAR] = dma_device_address[dmanr]; } @@ -367,19 +367,19 @@ static __inline__ void set_dma_mode(unsigned int dmanr, char mode) dmalp = (unsigned int *) dma_base_addr[dmanr]; dmawp = (unsigned short *) dma_base_addr[dmanr]; - // Clear config errors + /* Clear config errors */ dmalp[MCFDMA_DMR] |= MCFDMA_DMR_RESET; - // Set command register + /* Set command register */ dmalp[MCFDMA_DMR] = - MCFDMA_DMR_RQM_DUAL | // Mandatory Request Mode setting - MCFDMA_DMR_DSTT_SD | // Set up addressing types; set to supervisor-data. - MCFDMA_DMR_SRCT_SD | // Set up addressing types; set to supervisor-data. - // source static-address-mode + MCFDMA_DMR_RQM_DUAL | /* Mandatory Request Mode setting */ + MCFDMA_DMR_DSTT_SD | /* Set up addressing types; set to supervisor-data. */ + MCFDMA_DMR_SRCT_SD | /* Set up addressing types; set to supervisor-data. */ + /* source static-address-mode */ ((mode & DMA_MODE_SRC_SA_BIT) ? MCFDMA_DMR_SRCM_SA : MCFDMA_DMR_SRCM_IA) | - // dest static-address-mode + /* dest static-address-mode */ ((mode & DMA_MODE_DES_SA_BIT) ? MCFDMA_DMR_DSTM_SA : MCFDMA_DMR_DSTM_IA) | - // burst, 32 bit, 16 bit or 8 bit transfers are separately configurable on the MCF5272 + /* burst, 32 bit, 16 bit or 8 bit transfers are separately configurable on the MCF5272 */ (((mode & DMA_MODE_SSIZE_MASK) >> DMA_MODE_SSIZE_OFF) << MCFDMA_DMR_DSTS_OFF) | (((mode & DMA_MODE_SSIZE_MASK) >> DMA_MODE_SSIZE_OFF) << MCFDMA_DMR_SRCS_OFF); @@ -403,16 +403,16 @@ static __inline__ void set_dma_addr(unsigned int dmanr, unsigned int a) dmalp = (unsigned int *) dma_base_addr[dmanr]; - // Determine which address registers are used for memory/device accesses + /* Determine which address registers are used for memory/device accesses */ if (dmalp[MCFDMA_DMR] & MCFDMA_DMR_SRCM) { - // Source incrementing, must be memory + /* Source incrementing, must be memory */ dmalp[MCFDMA_DSAR] = a; - // Set dest address, must be device + /* Set dest address, must be device */ dmalp[MCFDMA_DDAR] = dma_device_address[dmanr]; } else { - // Destination incrementing, must be memory + /* Destination incrementing, must be memory */ dmalp[MCFDMA_DDAR] = a; - // Set source address, must be device + /* Set source address, must be device */ dmalp[MCFDMA_DSAR] = dma_device_address[dmanr]; } |