diff options
Diffstat (limited to 'drivers/media/dvb/b2c2/flexcop-dma.c')
| -rw-r--r-- | drivers/media/dvb/b2c2/flexcop-dma.c | 165 |
1 files changed, 111 insertions, 54 deletions
diff --git a/drivers/media/dvb/b2c2/flexcop-dma.c b/drivers/media/dvb/b2c2/flexcop-dma.c index 8d270607536..cf4ed1df608 100644 --- a/drivers/media/dvb/b2c2/flexcop-dma.c +++ b/drivers/media/dvb/b2c2/flexcop-dma.c @@ -37,22 +37,90 @@ void flexcop_dma_free(struct flexcop_dma *dma) } EXPORT_SYMBOL(flexcop_dma_free); -int flexcop_dma_control_timer_irq(struct flexcop_device *fc, flexcop_dma_index_t no, int onoff) +int flexcop_dma_config(struct flexcop_device *fc, + struct flexcop_dma *dma, + flexcop_dma_index_t dma_idx) { - flexcop_ibi_value v = fc->read_ibi_reg(fc,ctrl_208); + flexcop_ibi_value v0x0,v0x4,v0xc; + v0x0.raw = v0x4.raw = v0xc.raw = 0; - if (no & FC_DMA_1) - v.ctrl_208.DMA1_Timer_Enable_sig = onoff; + v0x0.dma_0x0.dma_address0 = dma->dma_addr0 >> 2; + v0xc.dma_0xc.dma_address1 = dma->dma_addr1 >> 2; + v0x4.dma_0x4_write.dma_addr_size = dma->size / 4; - if (no & FC_DMA_2) - v.ctrl_208.DMA2_Timer_Enable_sig = onoff; + if ((dma_idx & FC_DMA_1) == dma_idx) { + fc->write_ibi_reg(fc,dma1_000,v0x0); + fc->write_ibi_reg(fc,dma1_004,v0x4); + fc->write_ibi_reg(fc,dma1_00c,v0xc); + } else if ((dma_idx & FC_DMA_2) == dma_idx) { + fc->write_ibi_reg(fc,dma2_010,v0x0); + fc->write_ibi_reg(fc,dma2_014,v0x4); + fc->write_ibi_reg(fc,dma2_01c,v0xc); + } else { + err("either DMA1 or DMA2 can be configured at the within one flexcop_dma_config call."); + return -EINVAL; + } - fc->write_ibi_reg(fc,ctrl_208,v); return 0; } -EXPORT_SYMBOL(flexcop_dma_control_timer_irq); +EXPORT_SYMBOL(flexcop_dma_config); + +/* start the DMA transfers, but not the DMA IRQs */ +int flexcop_dma_xfer_control(struct flexcop_device *fc, + flexcop_dma_index_t dma_idx, + flexcop_dma_addr_index_t index, + int onoff) +{ + flexcop_ibi_value v0x0,v0xc; + flexcop_ibi_register r0x0,r0xc; + + if ((dma_idx & FC_DMA_1) == dma_idx) { + r0x0 = dma1_000; + r0xc = dma1_00c; + } else if ((dma_idx & FC_DMA_2) == dma_idx) { + r0x0 = dma2_010; + r0xc = dma2_01c; + } else { + err("either transfer DMA1 or DMA2 can be started within one flexcop_dma_xfer_control call."); + return -EINVAL; + } + + v0x0 = fc->read_ibi_reg(fc,r0x0); + v0xc = fc->read_ibi_reg(fc,r0xc); + + deb_rdump("reg: %03x: %x\n",r0x0,v0x0.raw); + deb_rdump("reg: %03x: %x\n",r0xc,v0xc.raw); + + if (index & FC_DMA_SUBADDR_0) + v0x0.dma_0x0.dma_0start = onoff; + + if (index & FC_DMA_SUBADDR_1) + v0xc.dma_0xc.dma_1start = onoff; + + fc->write_ibi_reg(fc,r0x0,v0x0); + fc->write_ibi_reg(fc,r0xc,v0xc); + + deb_rdump("reg: %03x: %x\n",r0x0,v0x0.raw); + deb_rdump("reg: %03x: %x\n",r0xc,v0xc.raw); + return 0; +} +EXPORT_SYMBOL(flexcop_dma_xfer_control); + +static int flexcop_dma_remap(struct flexcop_device *fc, + flexcop_dma_index_t dma_idx, + int onoff) +{ + flexcop_ibi_register r = (dma_idx & FC_DMA_1) ? dma1_00c : dma2_01c; + flexcop_ibi_value v = fc->read_ibi_reg(fc,r); + deb_info("%s\n",__FUNCTION__); + v.dma_0xc.remap_enable = onoff; + fc->write_ibi_reg(fc,r,v); + return 0; +} -int flexcop_dma_control_size_irq(struct flexcop_device *fc, flexcop_dma_index_t no, int onoff) +int flexcop_dma_control_size_irq(struct flexcop_device *fc, + flexcop_dma_index_t no, + int onoff) { flexcop_ibi_value v = fc->read_ibi_reg(fc,ctrl_208); @@ -67,75 +135,64 @@ int flexcop_dma_control_size_irq(struct flexcop_device *fc, flexcop_dma_index_t } EXPORT_SYMBOL(flexcop_dma_control_size_irq); -int flexcop_dma_control_packet_irq(struct flexcop_device *fc, flexcop_dma_index_t no, int onoff) +int flexcop_dma_control_timer_irq(struct flexcop_device *fc, + flexcop_dma_index_t no, + int onoff) { flexcop_ibi_value v = fc->read_ibi_reg(fc,ctrl_208); if (no & FC_DMA_1) - v.ctrl_208.DMA1_Size_IRQ_Enable_sig = onoff; + v.ctrl_208.DMA1_Timer_Enable_sig = onoff; if (no & FC_DMA_2) - v.ctrl_208.DMA2_Size_IRQ_Enable_sig = onoff; + v.ctrl_208.DMA2_Timer_Enable_sig = onoff; fc->write_ibi_reg(fc,ctrl_208,v); return 0; } -EXPORT_SYMBOL(flexcop_dma_control_packet_irq); +EXPORT_SYMBOL(flexcop_dma_control_timer_irq); -int flexcop_dma_config(struct flexcop_device *fc, struct flexcop_dma *dma, flexcop_dma_index_t dma_idx,flexcop_dma_addr_index_t index) +/* 1 cycles = 1.97 msec */ +int flexcop_dma_config_timer(struct flexcop_device *fc, + flexcop_dma_index_t dma_idx, + u8 cycles) { + flexcop_ibi_register r = (dma_idx & FC_DMA_1) ? dma1_004 : dma2_014; + flexcop_ibi_value v = fc->read_ibi_reg(fc,r); - flexcop_ibi_value v0x0,v0x4,v0xc; - v0x0.raw = v0x4.raw = v0xc.raw = 0; - - v0x0.dma_0x0.dma_address0 = dma->dma_addr0 >> 2; - v0xc.dma_0xc.dma_address1 = dma->dma_addr1 >> 2; - v0x4.dma_0x4_write.dma_addr_size = dma->size / 4; - - if (index & FC_DMA_SUBADDR_0) - v0x0.dma_0x0.dma_0start = 1; - - if (index & FC_DMA_SUBADDR_1) - v0xc.dma_0xc.dma_1start = 1; - - if (dma_idx & FC_DMA_1) { - fc->write_ibi_reg(fc,dma1_000,v0x0); - fc->write_ibi_reg(fc,dma1_004,v0x4); - fc->write_ibi_reg(fc,dma1_00c,v0xc); - } else { /* (dma_idx & FC_DMA_2) */ - fc->write_ibi_reg(fc,dma2_010,v0x0); - fc->write_ibi_reg(fc,dma2_014,v0x4); - fc->write_ibi_reg(fc,dma2_01c,v0xc); - } - - return 0; -} -EXPORT_SYMBOL(flexcop_dma_config); + flexcop_dma_remap(fc,dma_idx,0); -static int flexcop_dma_remap(struct flexcop_device *fc, flexcop_dma_index_t dma_idx, int onoff) -{ - flexcop_ibi_register r = (dma_idx & FC_DMA_1) ? dma1_00c : dma2_01c; - flexcop_ibi_value v = fc->read_ibi_reg(fc,r); - v.dma_0xc.remap_enable = onoff; + deb_info("%s\n",__FUNCTION__); + v.dma_0x4_write.dmatimer = cycles; fc->write_ibi_reg(fc,r,v); return 0; } +EXPORT_SYMBOL(flexcop_dma_config_timer); -/* 1 cycles = 1.97 msec */ -int flexcop_dma_config_timer(struct flexcop_device *fc, flexcop_dma_index_t dma_idx, u8 cycles) +/* packet IRQ does not exist in FCII or FCIIb - according to data book and tests */ +int flexcop_dma_control_packet_irq(struct flexcop_device *fc, + flexcop_dma_index_t no, + int onoff) { - flexcop_ibi_register r = (dma_idx & FC_DMA_1) ? dma1_004 : dma2_014; - flexcop_ibi_value v = fc->read_ibi_reg(fc,r); + flexcop_ibi_value v = fc->read_ibi_reg(fc,ctrl_208); - flexcop_dma_remap(fc,dma_idx,0); + deb_rdump("reg: %03x: %x\n",ctrl_208,v.raw); + if (no & FC_DMA_1) + v.ctrl_208.DMA1_Size_IRQ_Enable_sig = onoff; + + if (no & FC_DMA_2) + v.ctrl_208.DMA2_Size_IRQ_Enable_sig = onoff; + + fc->write_ibi_reg(fc,ctrl_208,v); + deb_rdump("reg: %03x: %x\n",ctrl_208,v.raw); - v.dma_0x4_write.dmatimer = cycles >> 1; - fc->write_ibi_reg(fc,r,v); return 0; } -EXPORT_SYMBOL(flexcop_dma_config_timer); +EXPORT_SYMBOL(flexcop_dma_control_packet_irq); -int flexcop_dma_config_packet_count(struct flexcop_device *fc, flexcop_dma_index_t dma_idx, u8 packets) +int flexcop_dma_config_packet_count(struct flexcop_device *fc, + flexcop_dma_index_t dma_idx, + u8 packets) { flexcop_ibi_register r = (dma_idx & FC_DMA_1) ? dma1_004 : dma2_014; flexcop_ibi_value v = fc->read_ibi_reg(fc,r); |