#define NO_SYNC_LINE (-1U)
+/* @lpi: lines per IRQ, or 0 to not generate irqs. Note: IRQ to be
+ generated _after_ lpi lines are transferred. */
static u32* cx88_risc_field(u32 *rp, struct scatterlist *sglist,
unsigned int offset, u32 sync_line,
unsigned int bpl, unsigned int padding,
- unsigned int lines)
+ unsigned int lines, unsigned int lpi)
{
struct scatterlist *sg;
- unsigned int line,todo;
+ unsigned int line,todo,sol;
/* sync instruction */
if (sync_line != NO_SYNC_LINE)
offset -= sg_dma_len(sg);
sg++;
}
+ if (lpi && line>0 && !(line % lpi))
+ sol = RISC_SOL | RISC_IRQ1 | RISC_CNT_INC;
+ else
+ sol = RISC_SOL;
if (bpl <= sg_dma_len(sg)-offset) {
/* fits into current chunk */
- *(rp++)=cpu_to_le32(RISC_WRITE|RISC_SOL|RISC_EOL|bpl);
+ *(rp++)=cpu_to_le32(RISC_WRITE|sol|RISC_EOL|bpl);
*(rp++)=cpu_to_le32(sg_dma_address(sg)+offset);
offset+=bpl;
} else {
/* scanline needs to be split */
todo = bpl;
- *(rp++)=cpu_to_le32(RISC_WRITE|RISC_SOL|
+ *(rp++)=cpu_to_le32(RISC_WRITE|sol|
(sg_dma_len(sg)-offset));
*(rp++)=cpu_to_le32(sg_dma_address(sg)+offset);
todo -= (sg_dma_len(sg)-offset);
rp = risc->cpu;
if (UNSET != top_offset)
rp = cx88_risc_field(rp, sglist, top_offset, 0,
- bpl, padding, lines);
+ bpl, padding, lines, 0);
if (UNSET != bottom_offset)
rp = cx88_risc_field(rp, sglist, bottom_offset, 0x200,
- bpl, padding, lines);
+ bpl, padding, lines, 0);
/* save pointer to jmp instruction address */
risc->jmp = rp;
int cx88_risc_databuffer(struct pci_dev *pci, struct btcx_riscmem *risc,
struct scatterlist *sglist, unsigned int bpl,
- unsigned int lines)
+ unsigned int lines, unsigned int lpi)
{
u32 instructions;
u32 *rp;
/* write risc instructions */
rp = risc->cpu;
- rp = cx88_risc_field(rp, sglist, 0, NO_SYNC_LINE, bpl, 0, lines);
+ rp = cx88_risc_field(rp, sglist, 0, NO_SYNC_LINE, bpl, 0, lines, lpi);
/* save pointer to jmp instruction address */
risc->jmp = rp;