diff options
Diffstat (limited to 'drivers/media/pci/cx88/cx88-core.c')
| -rw-r--r-- | drivers/media/pci/cx88/cx88-core.c | 1131 |
1 files changed, 1131 insertions, 0 deletions
diff --git a/drivers/media/pci/cx88/cx88-core.c b/drivers/media/pci/cx88/cx88-core.c new file mode 100644 index 000000000000..c97b174be3ab --- /dev/null +++ b/drivers/media/pci/cx88/cx88-core.c @@ -0,0 +1,1131 @@ +/* + * + * device driver for Conexant 2388x based TV cards + * driver core + * + * (c) 2003 Gerd Knorr <kraxel@bytesex.org> [SuSE Labs] + * + * (c) 2005-2006 Mauro Carvalho Chehab <mchehab@infradead.org> + * - Multituner support + * - video_ioctl2 conversion + * - PAL/M fixes + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + */ + +#include <linux/init.h> +#include <linux/list.h> +#include <linux/module.h> +#include <linux/kernel.h> +#include <linux/slab.h> +#include <linux/kmod.h> +#include <linux/sound.h> +#include <linux/interrupt.h> +#include <linux/pci.h> +#include <linux/delay.h> +#include <linux/videodev2.h> +#include <linux/mutex.h> + +#include "cx88.h" +#include <media/v4l2-common.h> +#include <media/v4l2-ioctl.h> + +MODULE_DESCRIPTION("v4l2 driver module for cx2388x based TV cards"); +MODULE_AUTHOR("Gerd Knorr <kraxel@bytesex.org> [SuSE Labs]"); +MODULE_LICENSE("GPL"); + +/* ------------------------------------------------------------------ */ + +static unsigned int core_debug; +module_param(core_debug,int,0644); +MODULE_PARM_DESC(core_debug,"enable debug messages [core]"); + +static unsigned int nicam; +module_param(nicam,int,0644); +MODULE_PARM_DESC(nicam,"tv audio is nicam"); + +static unsigned int nocomb; +module_param(nocomb,int,0644); +MODULE_PARM_DESC(nocomb,"disable comb filter"); + +#define dprintk(level,fmt, arg...) if (core_debug >= level) \ + printk(KERN_DEBUG "%s: " fmt, core->name , ## arg) + +static unsigned int cx88_devcount; +static LIST_HEAD(cx88_devlist); +static DEFINE_MUTEX(devlist); + +#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 __le32* cx88_risc_field(__le32 *rp, struct scatterlist *sglist, + unsigned int offset, u32 sync_line, + unsigned int bpl, unsigned int padding, + unsigned int lines, unsigned int lpi) +{ + struct scatterlist *sg; + unsigned int line,todo,sol; + + /* sync instruction */ + if (sync_line != NO_SYNC_LINE) + *(rp++) = cpu_to_le32(RISC_RESYNC | sync_line); + + /* scan lines */ + sg = sglist; + for (line = 0; line < lines; line++) { + while (offset && offset >= sg_dma_len(sg)) { + 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|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|sol| + (sg_dma_len(sg)-offset)); + *(rp++)=cpu_to_le32(sg_dma_address(sg)+offset); + todo -= (sg_dma_len(sg)-offset); + offset = 0; + sg++; + while (todo > sg_dma_len(sg)) { + *(rp++)=cpu_to_le32(RISC_WRITE| + sg_dma_len(sg)); + *(rp++)=cpu_to_le32(sg_dma_address(sg)); + todo -= sg_dma_len(sg); + sg++; + } + *(rp++)=cpu_to_le32(RISC_WRITE|RISC_EOL|todo); + *(rp++)=cpu_to_le32(sg_dma_address(sg)); + offset += todo; + } + offset += padding; + } + + return rp; +} + +int cx88_risc_buffer(struct pci_dev *pci, struct btcx_riscmem *risc, + struct scatterlist *sglist, + unsigned int top_offset, unsigned int bottom_offset, + unsigned int bpl, unsigned int padding, unsigned int lines) +{ + u32 instructions,fields; + __le32 *rp; + int rc; + + fields = 0; + if (UNSET != top_offset) + fields++; + if (UNSET != bottom_offset) + fields++; + + /* estimate risc mem: worst case is one write per page border + + one write per scan line + syncs + jump (all 2 dwords). Padding + can cause next bpl to start close to a page border. First DMA + region may be smaller than PAGE_SIZE */ + instructions = fields * (1 + ((bpl + padding) * lines) / PAGE_SIZE + lines); + instructions += 2; + if ((rc = btcx_riscmem_alloc(pci,risc,instructions*8)) < 0) + return rc; + + /* write risc instructions */ + rp = risc->cpu; + if (UNSET != top_offset) + rp = cx88_risc_field(rp, sglist, top_offset, 0, + bpl, padding, lines, 0); + if (UNSET != bottom_offset) + rp = cx88_risc_field(rp, sglist, bottom_offset, 0x200, + bpl, padding, lines, 0); + + /* save pointer to jmp instruction address */ + risc->jmp = rp; + BUG_ON((risc->jmp - risc->cpu + 2) * sizeof (*risc->cpu) > risc->size); + return 0; +} + +int cx88_risc_databuffer(struct pci_dev *pci, struct btcx_riscmem *risc, + struct scatterlist *sglist, unsigned int bpl, + unsigned int lines, unsigned int lpi) +{ + u32 instructions; + __le32 *rp; + int rc; + + /* estimate risc mem: worst case is one write per page border + + one write per scan line + syncs + jump (all 2 dwords). Here + there is no padding and no sync. First DMA region may be smaller + than PAGE_SIZE */ + instructions = 1 + (bpl * lines) / PAGE_SIZE + lines; + instructions += 1; + if ((rc = btcx_riscmem_alloc(pci,risc,instructions*8)) < 0) + return rc; + + /* write risc instructions */ + rp = risc->cpu; + rp = cx88_risc_field(rp, sglist, 0, NO_SYNC_LINE, bpl, 0, lines, lpi); + + /* save pointer to jmp instruction address */ + risc->jmp = rp; + BUG_ON((risc->jmp - risc->cpu + 2) * sizeof (*risc->cpu) > risc->size); + return 0; +} + +int cx88_risc_stopper(struct pci_dev *pci, struct btcx_riscmem *risc, + u32 reg, u32 mask, u32 value) +{ + __le32 *rp; + int rc; + + if ((rc = btcx_riscmem_alloc(pci, risc, 4*16)) < 0) + return rc; + + /* write risc instructions */ + rp = risc->cpu; + *(rp++) = cpu_to_le32(RISC_WRITECR | RISC_IRQ2 | RISC_IMM); + *(rp++) = cpu_to_le32(reg); + *(rp++) = cpu_to_le32(value); + *(rp++) = cpu_to_le32(mask); + *(rp++) = cpu_to_le32(RISC_JUMP); + *(rp++) = cpu_to_le32(risc->dma); + return 0; +} + +void +cx88_free_buffer(struct videobuf_queue *q, struct cx88_buffer *buf) +{ + struct videobuf_dmabuf *dma=videobuf_to_dma(&buf->vb); + + BUG_ON(in_interrupt()); + videobuf_waiton(q, &buf->vb, 0, 0); + videobuf_dma_unmap(q->dev, dma); + videobuf_dma_free(dma); + btcx_riscmem_free(to_pci_dev(q->dev), &buf->risc); + buf->vb.state = VIDEOBUF_NEEDS_INIT; +} + +/* ------------------------------------------------------------------ */ +/* our SRAM memory layout */ + +/* we are going to put all thr risc programs into host memory, so we + * can use the whole SDRAM for the DMA fifos. To simplify things, we + * use a static memory layout. That surely will waste memory in case + * we don't use all DMA channels at the same time (which will be the + * case most of the time). But that still gives us enough FIFO space + * to be able to deal with insane long pci latencies ... + * + * FIFO space allocations: + * channel 21 (y video) - 10.0k + * channel 22 (u video) - 2.0k + * channel 23 (v video) - 2.0k + * channel 24 (vbi) - 4.0k + * channels 25+26 (audio) - 4.0k + * channel 28 (mpeg) - 4.0k + * channel 27 (audio rds)- 3.0k + * TOTAL = 29.0k + * + * Every channel has 160 bytes control data (64 bytes instruction + * queue and 6 CDT entries), which is close to 2k total. + * + * Address layout: + * 0x0000 - 0x03ff CMDs / reserved + * 0x0400 - 0x0bff instruction queues + CDs + * 0x0c00 - FIFOs + */ + +const struct sram_channel cx88_sram_channels[] = { + [SRAM_CH21] = { + .name = "video y / packed", + .cmds_start = 0x180040, + .ctrl_start = 0x180400, + .cdt = 0x180400 + 64, + .fifo_start = 0x180c00, + .fifo_size = 0x002800, + .ptr1_reg = MO_DMA21_PTR1, + .ptr2_reg = MO_DMA21_PTR2, + .cnt1_reg = MO_DMA21_CNT1, + .cnt2_reg = MO_DMA21_CNT2, + }, + [SRAM_CH22] = { + .name = "video u", + .cmds_start = 0x180080, + .ctrl_start = 0x1804a0, + .cdt = 0x1804a0 + 64, + .fifo_start = 0x183400, + .fifo_size = 0x000800, + .ptr1_reg = MO_DMA22_PTR1, + .ptr2_reg = MO_DMA22_PTR2, + .cnt1_reg = MO_DMA22_CNT1, + .cnt2_reg = MO_DMA22_CNT2, + }, + [SRAM_CH23] = { + .name = "video v", + .cmds_start = 0x1800c0, + .ctrl_start = 0x180540, + .cdt = 0x180540 + 64, + .fifo_start = 0x183c00, + .fifo_size = 0x000800, + .ptr1_reg = MO_DMA23_PTR1, + .ptr2_reg = MO_DMA23_PTR2, + .cnt1_reg = MO_DMA23_CNT1, + .cnt2_reg = MO_DMA23_CNT2, + }, + [SRAM_CH24] = { + .name = "vbi", + .cmds_start = 0x180100, + .ctrl_start = 0x1805e0, + .cdt = 0x1805e0 + 64, + .fifo_start = 0x184400, + .fifo_size = 0x001000, + .ptr1_reg = MO_DMA24_PTR1, + .ptr2_reg = MO_DMA24_PTR2, + .cnt1_reg = MO_DMA24_CNT1, + .cnt2_reg = MO_DMA24_CNT2, + }, + [SRAM_CH25] = { + .name = "audio from", + .cmds_start = 0x180140, + .ctrl_start = 0x180680, + .cdt = 0x180680 + 64, + .fifo_start = 0x185400, + .fifo_size = 0x001000, + .ptr1_reg = MO_DMA25_PTR1, + .ptr2_reg = MO_DMA25_PTR2, + .cnt1_reg = MO_DMA25_CNT1, + .cnt2_reg = MO_DMA25_CNT2, + }, + [SRAM_CH26] = { + .name = "audio to", + .cmds_start = 0x180180, + .ctrl_start = 0x180720, + .cdt = 0x180680 + 64, /* same as audio IN */ + .fifo_start = 0x185400, /* same as audio IN */ + .fifo_size = 0x001000, /* same as audio IN */ + .ptr1_reg = MO_DMA26_PTR1, + .ptr2_reg = MO_DMA26_PTR2, + .cnt1_reg = MO_DMA26_CNT1, + .cnt2_reg = MO_DMA26_CNT2, + }, + [SRAM_CH28] = { + .name = "mpeg", + .cmds_start = 0x180200, + .ctrl_start = 0x1807C0, + .cdt = 0x1807C0 + 64, + .fifo_start = 0x186400, + .fifo_size = 0x001000, + .ptr1_reg = MO_DMA28_PTR1, + .ptr2_reg = MO_DMA28_PTR2, + .cnt1_reg = MO_DMA28_CNT1, + .cnt2_reg = MO_DMA28_CNT2, + }, + [SRAM_CH27] = { + .name = "audio rds", + .cmds_start = 0x1801C0, + .ctrl_start = 0x180860, + .cdt = 0x180860 + 64, + .fifo_start = 0x187400, + .fifo_size = 0x000C00, + .ptr1_reg = MO_DMA27_PTR1, + .ptr2_reg = MO_DMA27_PTR2, + .cnt1_reg = MO_DMA27_CNT1, + .cnt2_reg = MO_DMA27_CNT2, + }, +}; + +int cx88_sram_channel_setup(struct cx88_core *core, + const struct sram_channel *ch, + unsigned int bpl, u32 risc) +{ + unsigned int i,lines; + u32 cdt; + + bpl = (bpl + 7) & ~7; /* alignment */ + cdt = ch->cdt; + lines = ch->fifo_size / bpl; + if (lines > 6) + lines = 6; + BUG_ON(lines < 2); + + /* write CDT */ + for (i = 0; i < lines; i++) + cx_write(cdt + 16*i, ch->fifo_start + bpl*i); + + /* write CMDS */ + cx_write(ch->cmds_start + 0, risc); + cx_write(ch->cmds_start + 4, cdt); + cx_write(ch->cmds_start + 8, (lines*16) >> 3); + cx_write(ch->cmds_start + 12, ch->ctrl_start); + cx_write(ch->cmds_start + 16, 64 >> 2); + for (i = 20; i < 64; i += 4) + cx_write(ch->cmds_start + i, 0); + + /* fill registers */ + cx_write(ch->ptr1_reg, ch->fifo_start); + cx_write(ch->ptr2_reg, cdt); + cx_write(ch->cnt1_reg, (bpl >> 3) -1); + cx_write(ch->cnt2_reg, (lines*16) >> 3); + + dprintk(2,"sram setup %s: bpl=%d lines=%d\n", ch->name, bpl, lines); + return 0; +} + +/* ------------------------------------------------------------------ */ +/* debug helper code */ + +static int cx88_risc_decode(u32 risc) +{ + static const char * const instr[16] = { + [ RISC_SYNC >> 28 ] = "sync", + [ RISC_WRITE >> 28 ] = "write", + [ RISC_WRITEC >> 28 ] = "writec", + [ RISC_READ >> 28 ] = "read", + [ RISC_READC >> 28 ] = "readc", + [ RISC_JUMP >> 28 ] = "jump", + [ RISC_SKIP >> 28 ] = "skip", + [ RISC_WRITERM >> 28 ] = "writerm", + [ RISC_WRITECM >> 28 ] = "writecm", + [ RISC_WRITECR >> 28 ] = "writecr", + }; + static int const incr[16] = { + [ RISC_WRITE >> 28 ] = 2, + [ RISC_JUMP >> 28 ] = 2, + [ RISC_WRITERM >> 28 ] = 3, + [ RISC_WRITECM >> 28 ] = 3, + [ RISC_WRITECR >> 28 ] = 4, + }; + static const char * const bits[] = { + "12", "13", "14", "resync", + "cnt0", "cnt1", "18", "19", + "20", "21", "22", "23", + "irq1", "irq2", "eol", "sol", + }; + int i; + + printk("0x%08x [ %s", risc, + instr[risc >> 28] ? instr[risc >> 28] : "INVALID"); + for (i = ARRAY_SIZE(bits)-1; i >= 0; i--) + if (risc & (1 << (i + 12))) + printk(" %s",bits[i]); + printk(" count=%d ]\n", risc & 0xfff); + return incr[risc >> 28] ? incr[risc >> 28] : 1; +} + + +void cx88_sram_channel_dump(struct cx88_core *core, + const struct sram_channel *ch) +{ + static const char * const name[] = { + "initial risc", + "cdt base", + "cdt size", + "iq base", + "iq size", + "risc pc", + "iq wr ptr", + "iq rd ptr", + "cdt current", + "pci target", + "line / byte", + }; + u32 risc; + unsigned int i,j,n; + + printk("%s: %s - dma channel status dump\n", + core->name,ch->name); + for (i = 0; i < ARRAY_SIZE(name); i++) + printk("%s: cmds: %-12s: 0x%08x\n", + core->name,name[i], + cx_read(ch->cmds_start + 4*i)); + for (n = 1, i = 0; i < 4; i++) { + risc = cx_read(ch->cmds_start + 4 * (i+11)); + printk("%s: risc%d: ", core->name, i); + if (--n) + printk("0x%08x [ arg #%d ]\n", risc, n); + else + n = cx88_risc_decode(risc); + } + for (i = 0; i < 16; i += n) { + risc = cx_read(ch->ctrl_start + 4 * i); + printk("%s: iq %x: ", core->name, i); + n = cx88_risc_decode(risc); + for (j = 1; j < n; j++) { + risc = cx_read(ch->ctrl_start + 4 * (i+j)); + printk("%s: iq %x: 0x%08x [ arg #%d ]\n", + core->name, i+j, risc, j); + } + } + + printk("%s: fifo: 0x%08x -> 0x%x\n", + core->name, ch->fifo_start, ch->fifo_start+ch->fifo_size); + printk("%s: ctrl: 0x%08x -> 0x%x\n", + core->name, ch->ctrl_start, ch->ctrl_start+6*16); + printk("%s: ptr1_reg: 0x%08x\n", + core->name,cx_read(ch->ptr1_reg)); + printk("%s: ptr2_reg: 0x%08x\n", + core->name,cx_read(ch->ptr2_reg)); + printk("%s: cnt1_reg: 0x%08x\n", + core->name,cx_read(ch->cnt1_reg)); + printk("%s: cnt2_reg: 0x%08x\n", + core->name,cx_read(ch->cnt2_reg)); +} + +static const char *cx88_pci_irqs[32] = { + "vid", "aud", "ts", "vip", "hst", "5", "6", "tm1", + "src_dma", "dst_dma", "risc_rd_err", "risc_wr_err", + "brdg_err", "src_dma_err", "dst_dma_err", "ipb_dma_err", + "i2c", "i2c_rack", "ir_smp", "gpio0", "gpio1" +}; + +void cx88_print_irqbits(const char *name, const char *tag, const char *strings[], + int len, u32 bits, u32 mask) +{ + unsigned int i; + + printk(KERN_DEBUG "%s: %s [0x%x]", name, tag, bits); + for (i = 0; i < len; i++) { + if (!(bits & (1 << i))) + continue; + if (strings[i]) + printk(" %s", strings[i]); + else + printk(" %d", i); + if (!(mask & (1 << i))) + continue; + printk("*"); + } + printk("\n"); +} + +/* ------------------------------------------------------------------ */ + +int cx88_core_irq(struct cx88_core *core, u32 status) +{ + int handled = 0; + + if (status & PCI_INT_IR_SMPINT) { + cx88_ir_irq(core); + handled++; + } + if (!handled) + cx88_print_irqbits(core->name, "irq pci", + cx88_pci_irqs, ARRAY_SIZE(cx88_pci_irqs), + status, core->pci_irqmask); + return handled; +} + +void cx88_wakeup(struct cx88_core *core, + struct cx88_dmaqueue *q, u32 count) +{ + struct cx88_buffer *buf; + int bc; + + for (bc = 0;; bc++) { + if (list_empty(&q->active)) + break; + buf = list_entry(q->active.next, + struct cx88_buffer, vb.queue); + /* count comes from the hw and is is 16bit wide -- + * this trick handles wrap-arounds correctly for + * up to 32767 buffers in flight... */ + if ((s16) (count - buf->count) < 0) + break; + do_gettimeofday(&buf->vb.ts); + dprintk(2,"[%p/%d] wakeup reg=%d buf=%d\n",buf,buf->vb.i, + count, buf->count); + buf->vb.state = VIDEOBUF_DONE; + list_del(&buf->vb.queue); + wake_up(&buf->vb.done); + } + if (list_empty(&q->active)) { + del_timer(&q->timeout); + } else { + mod_timer(&q->timeout, jiffies+BUFFER_TIMEOUT); + } + if (bc != 1) + dprintk(2, "%s: %d buffers handled (should be 1)\n", + __func__, bc); +} + +void cx88_shutdown(struct cx88_core *core) +{ + /* disable RISC controller + IRQs */ + cx_write(MO_DEV_CNTRL2, 0); + + /* stop dma transfers */ + cx_write(MO_VID_DMACNTRL, 0x0); + cx_write(MO_AUD_DMACNTRL, 0x0); + cx_write(MO_TS_DMACNTRL, 0x0); + cx_write(MO_VIP_DMACNTRL, 0x0); + cx_write(MO_GPHST_DMACNTRL, 0x0); + + /* stop interrupts */ + cx_write(MO_PCI_INTMSK, 0x0); + cx_write(MO_VID_INTMSK, 0x0); + cx_write(MO_AUD_INTMSK, 0x0); + cx_write(MO_TS_INTMSK, 0x0); + cx_write(MO_VIP_INTMSK, 0x0); + cx_write(MO_GPHST_INTMSK, 0x0); + + /* stop capturing */ + cx_write(VID_CAPTURE_CONTROL, 0); +} + +int cx88_reset(struct cx88_core *core) +{ + dprintk(1,"%s\n",__func__); + cx88_shutdown(core); + + /* clear irq status */ + cx_write(MO_VID_INTSTAT, 0xFFFFFFFF); // Clear PIV int + cx_write(MO_PCI_INTSTAT, 0xFFFFFFFF); // Clear PCI int + cx_write(MO_INT1_STAT, 0xFFFFFFFF); // Clear RISC int + + /* wait a bit */ + msleep(100); + + /* init sram */ + cx88_sram_channel_setup(core, &cx88_sram_channels[SRAM_CH21], 720*4, 0); + cx88_sram_channel_setup(core, &cx88_sram_channels[SRAM_CH22], 128, 0); + cx88_sram_channel_setup(core, &cx88_sram_channels[SRAM_CH23], 128, 0); + cx88_sram_channel_setup(core, &cx88_sram_channels[SRAM_CH24], 128, 0); + cx88_sram_channel_setup(core, &cx88_sram_channels[SRAM_CH25], 128, 0); + cx88_sram_channel_setup(core, &cx88_sram_channels[SRAM_CH26], 128, 0); + cx88_sram_channel_setup(core, &cx88_sram_channels[SRAM_CH28], 188*4, 0); + cx88_sram_channel_setup(core, &cx88_sram_channels[SRAM_CH27], 128, 0); + + /* misc init ... */ + cx_write(MO_INPUT_FORMAT, ((1 << 13) | // agc enable + (1 << 12) | // agc gain + (1 << 11) | // adaptibe agc + (0 << 10) | // chroma agc + (0 << 9) | // ckillen + (7))); + + /* setup image format */ + cx_andor(MO_COLOR_CTRL, 0x4000, 0x4000); + + /* setup FIFO Thresholds */ + cx_write(MO_PDMA_STHRSH, 0x0807); + cx_write(MO_PDMA_DTHRSH, 0x0807); + + /* fixes flashing of image */ + cx_write(MO_AGC_SYNC_TIP1, 0x0380000F); + cx_write(MO_AGC_BACK_VBI, 0x00E00555); + + cx_write(MO_VID_INTSTAT, 0xFFFFFFFF); // Clear PIV int + cx_write(MO_PCI_INTSTAT, 0xFFFFFFFF); // Clear PCI int + cx_write(MO_INT1_STAT, 0xFFFFFFFF); // Clear RISC int + + /* Reset on-board parts */ + cx_write(MO_SRST_IO, 0); + msleep(10); + cx_write(MO_SRST_IO, 1); + + return 0; +} + +/* ------------------------------------------------------------------ */ + +static unsigned int inline norm_swidth(v4l2_std_id norm) +{ + return (norm & (V4L2_STD_MN & ~V4L2_STD_PAL_Nc)) ? 754 : 922; +} + +static unsigned int inline norm_hdelay(v4l2_std_id norm) +{ + return (norm & (V4L2_STD_MN & ~V4L2_STD_PAL_Nc)) ? 135 : 186; +} + +static unsigned int inline norm_vdelay(v4l2_std_id norm) +{ + return (norm & V4L2_STD_625_50) ? 0x24 : 0x18; +} + +static unsigned int inline norm_fsc8(v4l2_std_id norm) +{ + if (norm & V4L2_STD_PAL_M) + return 28604892; // 3.575611 MHz + + if (norm & (V4L2_STD_PAL_Nc)) + return 28656448; // 3.582056 MHz + + if (norm & V4L2_STD_NTSC) // All NTSC/M and variants + return 28636360; // 3.57954545 MHz +/- 10 Hz + + /* SECAM have also different sub carrier for chroma, + but step_db and step_dr, at cx88_set_tvnorm already handles that. + + The same FSC applies to PAL/BGDKIH, PAL/60, NTSC/4.43 and PAL/N + */ + + return 35468950; // 4.43361875 MHz +/- 5 Hz +} + +static unsigned int inline norm_htotal(v4l2_std_id norm) +{ + + unsigned int fsc4=norm_fsc8(norm)/2; + + /* returns 4*FSC / vtotal / frames per seconds */ + return (norm & V4L2_STD_625_50) ? + ((fsc4+312)/625+12)/25 : + ((fsc4+262)/525*1001+15000)/30000; +} + +static unsigned int inline norm_vbipack(v4l2_std_id norm) +{ + return (norm & V4L2_STD_625_50) ? 511 : 400; +} + +int cx88_set_scale(struct cx88_core *core, unsigned int width, unsigned int height, + enum v4l2_field field) +{ + unsigned int swidth = norm_swidth(core->tvnorm); + unsigned int sheight = norm_maxh(core->tvnorm); + u32 value; + + dprintk(1,"set_scale: %dx%d [%s%s,%s]\n", width, height, + V4L2_FIELD_HAS_TOP(field) ? "T" : "", + V4L2_FIELD_HAS_BOTTOM(field) ? "B" : "", + v4l2_norm_to_name(core->tvnorm)); + if (!V4L2_FIELD_HAS_BOTH(field)) + height *= 2; + + // recalc H delay and scale registers + value = (width * norm_hdelay(core->tvnorm)) / swidth; + value &= 0x3fe; + cx_write(MO_HDELAY_EVEN, value); + cx_write(MO_HDELAY_ODD, value); + dprintk(1,"set_scale: hdelay 0x%04x (width %d)\n", value,swidth); + + value = (swidth * 4096 / width) - 4096; + cx_write(MO_HSCALE_EVEN, value); + cx_write(MO_HSCALE_ODD, value); + dprintk(1,"set_scale: hscale 0x%04x\n", value); + + cx_write(MO_HACTIVE_EVEN, width); + cx_write(MO_HACTIVE_ODD, width); + dprintk(1,"set_scale: hactive 0x%04x\n", width); + + // recalc V scale Register (delay is constant) + cx_write(MO_VDELAY_EVEN, norm_vdelay(core->tvnorm)); + cx_write(MO_VDELAY_ODD, norm_vdelay(core->tvnorm)); + dprintk(1,"set_scale: vdelay 0x%04x\n", norm_vdelay(core->tvnorm)); + + value = (0x10000 - (sheight * 512 / height - 512)) & 0x1fff; + cx_write(MO_VSCALE_EVEN, value); + cx_write(MO_VSCALE_ODD, value); + dprintk(1,"set_scale: vscale 0x%04x\n", value); + + cx_write(MO_VACTIVE_EVEN, sheight); + cx_write(MO_VACTIVE_ODD, sheight); + dprintk(1,"set_scale: vactive 0x%04x\n", sheight); + + // setup filters + value = 0; + value |= (1 << 19); // CFILT (default) + if (core->tvnorm & V4L2_STD_SECAM) { + value |= (1 << 15); + value |= (1 << 16); + } + if (INPUT(core->input).type == CX88_VMUX_SVIDEO) + value |= (1 << 13) | (1 << 5); + if (V4L2_FIELD_INTERLACED == field) + value |= (1 << 3); // VINT (interlaced vertical scaling) + if (width < 385) + value |= (1 << 0); // 3-tap interpolation + if (width < 193) + value |= (1 << 1); // 5-tap interpolation + if (nocomb) + value |= (3 << 5); // disable comb filter + + cx_andor(MO_FILTER_EVEN, 0x7ffc7f, value); /* preserve PEAKEN, PSEL */ + cx_andor(MO_FILTER_ODD, 0x7ffc7f, value); + dprintk(1,"set_scale: filter 0x%04x\n", value); + + return 0; +} + +static const u32 xtal = 28636363; + +static int set_pll(struct cx88_core *core, int prescale, u32 ofreq) +{ + static const u32 pre[] = { 0, 0, 0, 3, 2, 1 }; + u64 pll; + u32 reg; + int i; + + if (prescale < 2) + prescale = 2; + if (prescale > 5) + prescale = 5; + + pll = ofreq * 8 * prescale * (u64)(1 << 20); + do_div(pll,xtal); + reg = (pll & 0x3ffffff) | (pre[prescale] << 26); + if (((reg >> 20) & 0x3f) < 14) { + printk("%s/0: pll out of range\n",core->name); + return -1; + } + + dprintk(1,"set_pll: MO_PLL_REG 0x%08x [old=0x%08x,freq=%d]\n", + reg, cx_read(MO_PLL_REG), ofreq); + cx_write(MO_PLL_REG, reg); + for (i = 0; i < 100; i++) { + reg = cx_read(MO_DEVICE_STATUS); + if (reg & (1<<2)) { + dprintk(1,"pll locked [pre=%d,ofreq=%d]\n", + prescale,ofreq); + return 0; + } + dprintk(1,"pll not locked yet, waiting ...\n"); + msleep(10); + } + dprintk(1,"pll NOT locked [pre=%d,ofreq=%d]\n",prescale,ofreq); + return -1; +} + +int cx88_start_audio_dma(struct cx88_core *core) +{ + /* constant 128 made buzz in analog Nicam-stereo for bigger fifo_size */ + int bpl = cx88_sram_channels[SRAM_CH25].fifo_size/4; + + int rds_bpl = cx88_sram_channels[SRAM_CH27].fifo_size/AUD_RDS_LINES; + + /* If downstream RISC is enabled, bail out; ALSA is managing DMA */ + if (cx_read(MO_AUD_DMACNTRL) & 0x10) + return 0; + + /* setup fifo + format */ + cx88_sram_channel_setup(core, &cx88_sram_channels[SRAM_CH25], bpl, 0); + cx88_sram_channel_setup(core, &cx88_sram_channels[SRAM_CH26], bpl, 0); + cx88_sram_channel_setup(core, &cx88_sram_channels[SRAM_CH27], + rds_bpl, 0); + + cx_write(MO_AUDD_LNGTH, bpl); /* fifo bpl size */ + cx_write(MO_AUDR_LNGTH, rds_bpl); /* fifo bpl size */ + + /* enable Up, Down and Audio RDS fifo */ + cx_write(MO_AUD_DMACNTRL, 0x0007); + + return 0; +} + +int cx88_stop_audio_dma(struct cx88_core *core) +{ + /* If downstream RISC is enabled, bail out; ALSA is managing DMA */ + if (cx_read(MO_AUD_DMACNTRL) & 0x10) + return 0; + + /* stop dma */ + cx_write(MO_AUD_DMACNTRL, 0x0000); + + return 0; +} + +static int set_tvaudio(struct cx88_core *core) +{ + v4l2_std_id norm = core->tvnorm; + + if (CX88_VMUX_TELEVISION != INPUT(core->input).type && + CX88_VMUX_CABLE != INPUT(core->input).type) + return 0; + + if (V4L2_STD_PAL_BG & norm) { + core->tvaudio = WW_BG; + + } else if (V4L2_STD_PAL_DK & norm) { + core->tvaudio = WW_DK; + + } else if (V4L2_STD_PAL_I & norm) { + core->tvaudio = WW_I; + + } else if (V4L2_STD_SECAM_L & norm) { + core->tvaudio = WW_L; + + } else if ((V4L2_STD_SECAM_B | V4L2_STD_SECAM_G | V4L2_STD_SECAM_H) & norm) { + core->tvaudio = WW_BG; + + } else if (V4L2_STD_SECAM_DK & norm) { + core->tvaudio = WW_DK; + + } else if ((V4L2_STD_NTSC_M & norm) || + (V4L2_STD_PAL_M & norm)) { + core->tvaudio = WW_BTSC; + + } else if (V4L2_STD_NTSC_M_JP & norm) { + core->tvaudio = WW_EIAJ; + + } else { + printk("%s/0: tvaudio support needs work for this tv norm [%s], sorry\n", + core->name, v4l2_norm_to_name(core->tvnorm)); + core->tvaudio = WW_NONE; + return 0; + } + + cx_andor(MO_AFECFG_IO, 0x1f, 0x0); + cx88_set_tvaudio(core); + /* cx88_set_stereo(dev,V4L2_TUNER_MODE_STEREO); */ + +/* + This should be needed only on cx88-alsa. It seems that some cx88 chips have + bugs and does require DMA enabled for it to work. + */ + cx88_start_audio_dma(core); + return 0; +} + + + +int cx88_set_tvnorm(struct cx88_core *core, v4l2_std_id norm) +{ + u32 fsc8; + u32 adc_clock; + u32 vdec_clock; + u32 step_db,step_dr; + u64 tmp64; + u32 bdelay,agcdelay,htotal; + u32 cxiformat, cxoformat; + + core->tvnorm = norm; + fsc8 = norm_fsc8(norm); + adc_clock = xtal; + vdec_clock = fsc8; + step_db = fsc8; + step_dr = fsc8; + + if (norm & V4L2_STD_NTSC_M_JP) { + cxiformat = VideoFormatNTSCJapan; + cxoformat = 0x181f0008; + } else if (norm & V4L2_STD_NTSC_443) { + cxiformat = VideoFormatNTSC443; + cxoformat = 0x181f0008; + } else if (norm & V4L2_STD_PAL_M) { + cxiformat = VideoFormatPALM; + cxoformat = 0x1c1f0008; + } else if (norm & V4L2_STD_PAL_N) { + cxiformat = VideoFormatPALN; + cxoformat = 0x1c1f0008; + } else if (norm & V4L2_STD_PAL_Nc) { + cxiformat = VideoFormatPALNC; + cxoformat = 0x1c1f0008; + } else if (norm & V4L2_STD_PAL_60) { + cxiformat = VideoFormatPAL60; + cxoformat = 0x181f0008; + } else if (norm & V4L2_STD_NTSC) { + cxiformat = VideoFormatNTSC; + cxoformat = 0x181f0008; + } else if (norm & V4L2_STD_SECAM) { + step_db = 4250000 * 8; + step_dr = 4406250 * 8; + + cxiformat = VideoFormatSECAM; + cxoformat = 0x181f0008; + } else { /* PAL */ + cxiformat = VideoFormatPAL; + cxoformat = 0x181f0008; + } + + dprintk(1,"set_tvnorm: \"%s\" fsc8=%d adc=%d vdec=%d db/dr=%d/%d\n", + v4l2_norm_to_name(core->tvnorm), fsc8, adc_clock, vdec_clock, + step_db, step_dr); + set_pll(core,2,vdec_clock); + + dprintk(1,"set_tvnorm: MO_INPUT_FORMAT 0x%08x [old=0x%08x]\n", + cxiformat, cx_read(MO_INPUT_FORMAT) & 0x0f); + /* Chroma AGC must be disabled if SECAM is used, we enable it + by default on PAL and NTSC */ + cx_andor(MO_INPUT_FORMAT, 0x40f, + norm & V4L2_STD_SECAM ? cxiformat : cxiformat | 0x400); + + // FIXME: as-is from DScaler + dprintk(1,"set_tvnorm: MO_OUTPUT_FORMAT 0x%08x [old=0x%08x]\n", + cxoformat, cx_read(MO_OUTPUT_FORMAT)); + cx_write(MO_OUTPUT_FORMAT, cxoformat); + + // MO_SCONV_REG = adc clock / video dec clock * 2^17 + tmp64 = adc_clock * (u64)(1 << 17); + do_div(tmp64, vdec_clock); + dprintk(1,"set_tvnorm: MO_SCONV_REG 0x%08x [old=0x%08x]\n", + (u32)tmp64, cx_read(MO_SCONV_REG)); + cx_write(MO_SCONV_REG, (u32)tmp64); + + // MO_SUB_STEP = 8 * fsc / video dec clock * 2^22 + tmp64 = step_db * (u64)(1 << 22); + do_div(tmp64, vdec_clock); + dprintk(1,"set_tvnorm: MO_SUB_STEP 0x%08x [old=0x%08x]\n", + (u32)tmp64, cx_read(MO_SUB_STEP)); + cx_write(MO_SUB_STEP, (u32)tmp64); + + // MO_SUB_STEP_DR = 8 * 4406250 / video dec clock * 2^22 + tmp64 = step_dr * (u64)(1 << 22); + do_div(tmp64, vdec_clock); + dprintk(1,"set_tvnorm: MO_SUB_STEP_DR 0x%08x [old=0x%08x]\n", + (u32)tmp64, cx_read(MO_SUB_STEP_DR)); + cx_write(MO_SUB_STEP_DR, (u32)tmp64); + + // bdelay + agcdelay + bdelay = vdec_clock * 65 / 20000000 + 21; + agcdelay = vdec_clock * 68 / 20000000 + 15; + dprintk(1,"set_tvnorm: MO_AGC_BURST 0x%08x [old=0x%08x,bdelay=%d,agcdelay=%d]\n", + (bdelay << 8) | agcdelay, cx_read(MO_AGC_BURST), bdelay, agcdelay); + cx_write(MO_AGC_BURST, (bdelay << 8) | agcdelay); + + // htotal + tmp64 = norm_htotal(norm) * (u64)vdec_clock; + do_div(tmp64, fsc8); + htotal = (u32)tmp64; + dprintk(1,"set_tvnorm: MO_HTOTAL 0x%08x [old=0x%08x,htotal=%d]\n", + htotal, cx_read(MO_HTOTAL), (u32)tmp64); + cx_andor(MO_HTOTAL, 0x07ff, htotal); + + // vbi stuff, set vbi offset to 10 (for 20 Clk*2 pixels), this makes + // the effective vbi offset ~244 samples, the same as the Bt8x8 + cx_write(MO_VBI_PACKET, (10<<11) | norm_vbipack(norm)); + + // this is needed as well to set all tvnorm parameter + cx88_set_scale(core, 320, 240, V4L2_FIELD_INTERLACED); + + // audio + set_tvaudio(core); + + // tell i2c chips + call_all(core, core, s_std, norm); + + /* The chroma_agc control should be inaccessible if the video format is SECAM */ + v4l2_ctrl_grab(core->chroma_agc, cxiformat == VideoFormatSECAM); + + // done + return 0; +} + +/* ------------------------------------------------------------------ */ + +struct video_device *cx88_vdev_init(struct cx88_core *core, + struct pci_dev *pci, + const struct video_device *template_, + const char *type) +{ + struct video_device *vfd; + + vfd = video_device_alloc(); + if (NULL == vfd) + return NULL; + *vfd = *template_; + vfd->v4l2_dev = &core->v4l2_dev; + vfd->release = video_device_release; + snprintf(vfd->name, sizeof(vfd->name), "%s %s (%s)", + core->name, type, core->board.name); + set_bit(V4L2_FL_USE_FH_PRIO, &vfd->flags); + return vfd; +} + +struct cx88_core* cx88_core_get(struct pci_dev *pci) +{ + struct cx88_core *core; + + mutex_lock(&devlist); + list_for_each_entry(core, &cx88_devlist, devlist) { + if (pci->bus->number != core->pci_bus) + continue; + if (PCI_SLOT(pci->devfn) != core->pci_slot) + continue; + + if (0 != cx88_get_resources(core, pci)) { + mutex_unlock(&devlist); + return NULL; + } + atomic_inc(&core->refcount); + mutex_unlock(&devlist); + return core; + } + + core = cx88_core_create(pci, cx88_devcount); + if (NULL != core) { + cx88_devcount++; + list_add_tail(&core->devlist, &cx88_devlist); + } + + mutex_unlock(&devlist); + return core; +} + +void cx88_core_put(struct cx88_core *core, struct pci_dev *pci) +{ + release_mem_region(pci_resource_start(pci,0), + pci_resource_len(pci,0)); + + if (!atomic_dec_and_test(&core->refcount)) + return; + + mutex_lock(&devlist); + cx88_ir_fini(core); + if (0 == core->i2c_rc) { + if (core->i2c_rtc) + i2c_unregister_device(core->i2c_rtc); + i2c_del_adapter(&core->i2c_adap); + } + list_del(&core->devlist); + iounmap(core->lmmio); + cx88_devcount--; + mutex_unlock(&devlist); + v4l2_ctrl_handler_free(&core->video_hdl); + v4l2_ctrl_handler_free(&core->audio_hdl); + v4l2_device_unregister(&core->v4l2_dev); + kfree(core); +} + +/* ------------------------------------------------------------------ */ + +EXPORT_SYMBOL(cx88_print_irqbits); + +EXPORT_SYMBOL(cx88_core_irq); +EXPORT_SYMBOL(cx88_wakeup); +EXPORT_SYMBOL(cx88_reset); +EXPORT_SYMBOL(cx88_shutdown); + +EXPORT_SYMBOL(cx88_risc_buffer); +EXPORT_SYMBOL(cx88_risc_databuffer); +EXPORT_SYMBOL(cx88_risc_stopper); +EXPORT_SYMBOL(cx88_free_buffer); + +EXPORT_SYMBOL(cx88_sram_channels); +EXPORT_SYMBOL(cx88_sram_channel_setup); +EXPORT_SYMBOL(cx88_sram_channel_dump); + +EXPORT_SYMBOL(cx88_set_tvnorm); +EXPORT_SYMBOL(cx88_set_scale); + +EXPORT_SYMBOL(cx88_vdev_init); +EXPORT_SYMBOL(cx88_core_get); +EXPORT_SYMBOL(cx88_core_put); + +EXPORT_SYMBOL(cx88_ir_start); +EXPORT_SYMBOL(cx88_ir_stop); + +/* + * Local variables: + * c-basic-offset: 8 + * End: + * kate: eol "unix"; indent-width 3; remove-trailing-space on; replace-trailing-space-save on; tab-width 8; replace-tabs off; space-indent off; mixed-indent off + */ |