diff options
Diffstat (limited to 'drivers/media/dvb/b2c2/flexcop-dma.c')
| -rw-r--r-- | drivers/media/dvb/b2c2/flexcop-dma.c | 172 |
1 files changed, 0 insertions, 172 deletions
diff --git a/drivers/media/dvb/b2c2/flexcop-dma.c b/drivers/media/dvb/b2c2/flexcop-dma.c deleted file mode 100644 index 2881e0d956a..00000000000 --- a/drivers/media/dvb/b2c2/flexcop-dma.c +++ /dev/null @@ -1,172 +0,0 @@ -/* - * Linux driver for digital TV devices equipped with B2C2 FlexcopII(b)/III - * flexcop-dma.c - configuring and controlling the DMA of the FlexCop - * see flexcop.c for copyright information - */ -#include "flexcop.h" - -int flexcop_dma_allocate(struct pci_dev *pdev, - struct flexcop_dma *dma, u32 size) -{ - u8 *tcpu; - dma_addr_t tdma = 0; - - if (size % 2) { - err("dma buffersize has to be even."); - return -EINVAL; - } - - if ((tcpu = pci_alloc_consistent(pdev, size, &tdma)) != NULL) { - dma->pdev = pdev; - dma->cpu_addr0 = tcpu; - dma->dma_addr0 = tdma; - dma->cpu_addr1 = tcpu + size/2; - dma->dma_addr1 = tdma + size/2; - dma->size = size/2; - return 0; - } - return -ENOMEM; -} -EXPORT_SYMBOL(flexcop_dma_allocate); - -void flexcop_dma_free(struct flexcop_dma *dma) -{ - pci_free_consistent(dma->pdev, dma->size*2, - dma->cpu_addr0, dma->dma_addr0); - memset(dma,0,sizeof(struct flexcop_dma)); -} -EXPORT_SYMBOL(flexcop_dma_free); - -int flexcop_dma_config(struct flexcop_device *fc, - struct flexcop_dma *dma, - flexcop_dma_index_t dma_idx) -{ - 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 ((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 within one " - "flexcop_dma_config call."); - return -EINVAL; - } - - return 0; -} -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",__func__); - 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) -{ - flexcop_ibi_value v = fc->read_ibi_reg(fc,ctrl_208); - - if (no & FC_DMA_1) - v.ctrl_208.DMA1_IRQ_Enable_sig = onoff; - - if (no & FC_DMA_2) - v.ctrl_208.DMA2_IRQ_Enable_sig = onoff; - - fc->write_ibi_reg(fc,ctrl_208,v); - return 0; -} -EXPORT_SYMBOL(flexcop_dma_control_size_irq); - -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_Timer_Enable_sig = onoff; - - if (no & FC_DMA_2) - v.ctrl_208.DMA2_Timer_Enable_sig = onoff; - - fc->write_ibi_reg(fc,ctrl_208,v); - return 0; -} -EXPORT_SYMBOL(flexcop_dma_control_timer_irq); - -/* 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_dma_remap(fc,dma_idx,0); - - deb_info("%s\n",__func__); - v.dma_0x4_write.dmatimer = cycles; - fc->write_ibi_reg(fc,r,v); - return 0; -} -EXPORT_SYMBOL(flexcop_dma_config_timer); - |