diff options
Diffstat (limited to 'arch/mips/txx9/generic/setup_tx4927.c')
| -rw-r--r-- | arch/mips/txx9/generic/setup_tx4927.c | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/arch/mips/txx9/generic/setup_tx4927.c b/arch/mips/txx9/generic/setup_tx4927.c index 1093549df1a..3418b2a90f7 100644 --- a/arch/mips/txx9/generic/setup_tx4927.c +++ b/arch/mips/txx9/generic/setup_tx4927.c @@ -22,6 +22,7 @@ #include <asm/txx9tmr.h> #include <asm/txx9pio.h> #include <asm/txx9/generic.h> +#include <asm/txx9/dmac.h> #include <asm/txx9/tx4927.h> static void __init tx4927_wdr_init(void) @@ -253,6 +254,60 @@ void __init tx4927_mtd_init(int ch) txx9_physmap_flash_init(ch, start, size, &pdata); } +void __init tx4927_dmac_init(int memcpy_chan) +{ + struct txx9dmac_platform_data plat_data = { + .memcpy_chan = memcpy_chan, + .have_64bit_regs = true, + }; + + txx9_dmac_init(0, TX4927_DMA_REG & 0xfffffffffULL, + TXX9_IRQ_BASE + TX4927_IR_DMA(0), &plat_data); +} + +void __init tx4927_aclc_init(unsigned int dma_chan_out, + unsigned int dma_chan_in) +{ + u64 pcfg = __raw_readq(&tx4927_ccfgptr->pcfg); + __u64 dmasel_mask = 0, dmasel = 0; + unsigned long flags; + + if (!(pcfg & TX4927_PCFG_SEL2)) + return; + /* setup DMASEL (playback:ACLC ch0, capture:ACLC ch1) */ + switch (dma_chan_out) { + case 0: + dmasel_mask |= TX4927_PCFG_DMASEL0_MASK; + dmasel |= TX4927_PCFG_DMASEL0_ACL0; + break; + case 2: + dmasel_mask |= TX4927_PCFG_DMASEL2_MASK; + dmasel |= TX4927_PCFG_DMASEL2_ACL0; + break; + default: + return; + } + switch (dma_chan_in) { + case 1: + dmasel_mask |= TX4927_PCFG_DMASEL1_MASK; + dmasel |= TX4927_PCFG_DMASEL1_ACL1; + break; + case 3: + dmasel_mask |= TX4927_PCFG_DMASEL3_MASK; + dmasel |= TX4927_PCFG_DMASEL3_ACL1; + break; + default: + return; + } + local_irq_save(flags); + txx9_clear64(&tx4927_ccfgptr->pcfg, dmasel_mask); + txx9_set64(&tx4927_ccfgptr->pcfg, dmasel); + local_irq_restore(flags); + txx9_aclc_init(TX4927_ACLC_REG & 0xfffffffffULL, + TXX9_IRQ_BASE + TX4927_IR_ACLC, + 0, dma_chan_out, dma_chan_in); +} + static void __init tx4927_stop_unused_modules(void) { __u64 pcfg, rst = 0, ckd = 0; |