diff options
Diffstat (limited to 'include/asm-powerpc/immap_86xx.h')
| -rw-r--r-- | include/asm-powerpc/immap_86xx.h | 25 |
1 files changed, 23 insertions, 2 deletions
diff --git a/include/asm-powerpc/immap_86xx.h b/include/asm-powerpc/immap_86xx.h index 0ad4e653d46..0f165e59c32 100644 --- a/include/asm-powerpc/immap_86xx.h +++ b/include/asm-powerpc/immap_86xx.h @@ -89,14 +89,14 @@ struct ccsr_guts { * them. * * guts: Pointer to GUTS structure - * co: The DMA controller (1 or 2) + * co: The DMA controller (0 or 1) * ch: The channel on the DMA controller (0, 1, 2, or 3) * device: The device to set as the source (CCSR_GUTS_DMACR_DEV_xx) */ static inline void guts_set_dmacr(struct ccsr_guts __iomem *guts, unsigned int co, unsigned int ch, unsigned int device) { - unsigned int shift = 16 + (8 * (2 - co) + 2 * (3 - ch)); + unsigned int shift = 16 + (8 * (1 - co) + 2 * (3 - ch)); clrsetbits_be32(&guts->dmacr, 3 << shift, device << shift); } @@ -118,6 +118,27 @@ static inline void guts_set_dmacr(struct ccsr_guts __iomem *guts, #define CCSR_GUTS_PMUXCR_DMA1_0 0x00000002 #define CCSR_GUTS_PMUXCR_DMA1_3 0x00000001 +/* + * Set the DMA external control bits in the GUTS + * + * The DMA external control bits in the PMUXCR are only meaningful for + * channels 0 and 3. Any other channels are ignored. + * + * guts: Pointer to GUTS structure + * co: The DMA controller (0 or 1) + * ch: The channel on the DMA controller (0, 1, 2, or 3) + * value: the new value for the bit (0 or 1) + */ +static inline void guts_set_pmuxcr_dma(struct ccsr_guts __iomem *guts, + unsigned int co, unsigned int ch, unsigned int value) +{ + if ((ch == 0) || (ch == 3)) { + unsigned int shift = 2 * (co + 1) - (ch & 1) - 1; + + clrsetbits_be32(&guts->pmuxcr, 1 << shift, value << shift); + } +} + #define CCSR_GUTS_CLKDVDR_PXCKEN 0x80000000 #define CCSR_GUTS_CLKDVDR_SSICKEN 0x20000000 #define CCSR_GUTS_CLKDVDR_PXCKINV 0x10000000 |