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[linux-dvb] new budget-patch.c driver
HI All
Here's my latest and greatest version of budget-patch driver
Please discard my later posting on budget and patch related
probmles (except sw_demux :) because I had faulty hardware,
a vsync pin disconnected... I fixed this and made the update
for bandwidth improvement with budget-patch.
I had to do miminal intervention in budget-core, because
there appears to be some card-specific codes which IMHO
would better fit into budget.c driver anyway, here's the
patch
Emard
diff -pur /tmp/dvb-kernel/linux/drivers/media/dvb/ttpci/budget-core.c dvb-kernel/linux/drivers/media/dvb/ttpci/budget-core.c
--- /tmp/dvb-kernel/linux/drivers/media/dvb/ttpci/budget-core.c 2004-12-04 19:03:52.000000000 +0100
+++ dvb-kernel/linux/drivers/media/dvb/ttpci/budget-core.c 2004-12-29 13:22:56.000000000 +0100
@@ -87,20 +87,28 @@ static int start_ts_capture(struct budge
* Pitch: 188, NumBytes3: 188, NumLines3: 1024
*/
- if (budget->card->type == BUDGET_FS_ACTIVY) {
- saa7146_write(dev, DD1_INIT, 0x04000000);
- saa7146_write(dev, MC2, (MASK_09 | MASK_25));
- saa7146_write(dev, BRS_CTRL, 0x00000000);
- } else {
- if (budget->video_port == BUDGET_VIDEO_PORTA) {
- saa7146_write(dev, DD1_INIT, 0x06000200);
- saa7146_write(dev, MC2, (MASK_09 | MASK_25 | MASK_10 | MASK_26));
- saa7146_write(dev, BRS_CTRL, 0x00000000);
- } else {
- saa7146_write(dev, DD1_INIT, 0x02000600);
- saa7146_write(dev, MC2, (MASK_09 | MASK_25 | MASK_10 | MASK_26));
- saa7146_write(dev, BRS_CTRL, 0x60000000);
- }
+ switch(budget->card->type)
+ {
+ case BUDGET_FS_ACTIVY:
+ saa7146_write(dev, DD1_INIT, 0x04000000);
+ saa7146_write(dev, MC2, (MASK_09 | MASK_25));
+ saa7146_write(dev, BRS_CTRL, 0x00000000);
+ break;
+ case BUDGET_PATCH:
+ saa7146_write(dev, DD1_INIT, 0x00000200);
+ saa7146_write(dev, MC2, (MASK_10 | MASK_26));
+ saa7146_write(dev, BRS_CTRL, 0x60000000);
+ break;
+ default:
+ if (budget->video_port == BUDGET_VIDEO_PORTA) {
+ saa7146_write(dev, DD1_INIT, 0x06000200);
+ saa7146_write(dev, MC2, (MASK_09 | MASK_25 | MASK_10 | MASK_26));
+ saa7146_write(dev, BRS_CTRL, 0x00000000);
+ } else {
+ saa7146_write(dev, DD1_INIT, 0x02000600);
+ saa7146_write(dev, MC2, (MASK_09 | MASK_25 | MASK_10 | MASK_26));
+ saa7146_write(dev, BRS_CTRL, 0x60000000);
+ }
}
saa7146_write(dev, MC2, (MASK_08 | MASK_24));
Only in dvb-kernel/linux/drivers/media/dvb/ttpci: budget-core.c~
diff -pur /tmp/dvb-kernel/linux/drivers/media/dvb/ttpci/budget-patch.c dvb-kernel/linux/drivers/media/dvb/ttpci/budget-patch.c
--- /tmp/dvb-kernel/linux/drivers/media/dvb/ttpci/budget-patch.c 2004-12-04 19:03:52.000000000 +0100
+++ dvb-kernel/linux/drivers/media/dvb/ttpci/budget-patch.c 2004-12-29 14:26:18.000000000 +0100
@@ -50,40 +50,21 @@ static struct pci_device_id pci_tbl[] =
}
};
-static int budget_wdebi(struct budget_patch *budget, u32 config, int addr, u32 val, int count)
-{
- struct saa7146_dev *dev=budget->dev;
-
- dprintk(2, "budget: %p\n", budget);
-
- if (count <= 0 || count > 4)
- return -1;
-
- saa7146_write(dev, DEBI_CONFIG, config);
-
- saa7146_write(dev, DEBI_AD, val );
- saa7146_write(dev, DEBI_COMMAND, (count << 17) | (addr & 0xffff));
- saa7146_write(dev, MC2, (2 << 16) | 2);
- mdelay(5);
-
- return 0;
-}
-
static int budget_av7110_send_fw_cmd(struct budget_patch *budget, u16* buf, int length)
{
int i;
dprintk(2, "budget: %p\n", budget);
-
+ return 0;
for (i = 2; i < length; i++)
- budget_wdebi(budget, DEBINOSWAP, COMMAND + 2*i, (u32) buf[i], 2);
+ ttpci_budget_debiwrite(budget, DEBINOSWAP, COMMAND + 2*i, 2, (u32) buf[i], 1,1);
if (length)
- budget_wdebi(budget, DEBINOSWAP, COMMAND + 2, (u32) buf[1], 2);
+ ttpci_budget_debiwrite(budget, DEBINOSWAP, COMMAND + 2, 2, (u32) buf[1], 1,1);
else
- budget_wdebi(budget, DEBINOSWAP, COMMAND + 2, 0, 2);
+ ttpci_budget_debiwrite(budget, DEBINOSWAP, COMMAND + 2, 2, 0, 1,1);
- budget_wdebi(budget, DEBINOSWAP, COMMAND, (u32) buf[0], 2);
+ ttpci_budget_debiwrite(budget, DEBINOSWAP, COMMAND, 2, (u32) buf[0], 1,1);
return 0;
}
@@ -369,18 +350,112 @@ static int budget_patch_attach (struct s
struct budget_patch *budget;
int err;
int count = 0;
+ int detected = 0;
+
+#define PATCH_RESET 0
+#define RPS_IRQ 0
+#define HPS_SETUP 0
+#if PATCH_RESET
+ saa7146_write(dev, MC1, MASK_31);
+ msleep(40);
+#endif
+#if HPS_SETUP
+ // initialize registers. Better to have it like this
+ // than leaving something unconfigured
+ saa7146_write(dev, DD1_STREAM_B, 0);
+ // port B VSYNC at rising edge
+ saa7146_write(dev, DD1_INIT, 0x00000200); // have this in budget-core too!
+ saa7146_write(dev, BRS_CTRL, 0x00000000); // VBI
+
+ // debi config
+ // saa7146_write(dev, DEBI_CONFIG, MASK_30|MASK_28|MASK_18);
+
+ // zero all HPS registers
+ saa7146_write(dev, HPS_H_PRESCALE, 0); // r68
+ saa7146_write(dev, HPS_H_SCALE, 0); // r6c
+ saa7146_write(dev, BCS_CTRL, 0); // r70
+ saa7146_write(dev, HPS_V_SCALE, 0); // r60
+ saa7146_write(dev, HPS_V_GAIN, 0); // r64
+ saa7146_write(dev, CHROMA_KEY_RANGE, 0); // r74
+ saa7146_write(dev, CLIP_FORMAT_CTRL, 0); // r78
+ // Set HPS prescaler for port B input
+ saa7146_write(dev, HPS_CTRL, (1<<30) | (0<<29) | (1<<28) | (0<<12) );
+ saa7146_write(dev, MC2,
+ 0 * (MASK_08 | MASK_24) | // BRS control
+ 0 * (MASK_09 | MASK_25) | // a
+ 0 * (MASK_10 | MASK_26) | // b
+ 1 * (MASK_06 | MASK_22) | // HPS_CTRL1
+ 1 * (MASK_05 | MASK_21) | // HPS_CTRL2
+ 0 * (MASK_01 | MASK_15) // DEBI
+ );
+#endif
+ // Disable RPS1 and RPS0
+ saa7146_write(dev, MC1, ( MASK_29 | MASK_28));
+ // RPS1 timeout disable
+ saa7146_write(dev, RPS_TOV1, 0);
+
+ // code for autodetection
+ // will wait for VBI_B event (vertical blank at port B)
+ // and will reset GPIO3 after VBI_B is detected.
+ // (GPIO3 should be raised high by CPU to
+ // test if GPIO3 will generate vertical blank signal
+ // in budget patch GPIO3 is connected to VSYNC_B
+ count = 0;
+#if 0
+ WRITE_RPS1(cpu_to_le32(CMD_UPLOAD |
+ MASK_10 | MASK_09 | MASK_08 | MASK_06 | MASK_05 | MASK_04 | MASK_03 | MASK_02 ));
+#endif
+ WRITE_RPS1(cpu_to_le32(CMD_PAUSE | EVT_VBI_B));
+ WRITE_RPS1(cpu_to_le32(CMD_WR_REG_MASK | (GPIO_CTRL>>2)));
+ WRITE_RPS1(cpu_to_le32(GPIO3_MSK));
+ WRITE_RPS1(cpu_to_le32(SAA7146_GPIO_OUTLO<<24));
+#if RPS_IRQ
+ // issue RPS1 interrupt to increment counter
+ WRITE_RPS1(cpu_to_le32(CMD_INTERRUPT));
+ // at least a NOP is neede between two interrupts
+ WRITE_RPS1(cpu_to_le32(CMD_NOP));
+ // interrupt again
+ WRITE_RPS1(cpu_to_le32(CMD_INTERRUPT));
+#endif
+ WRITE_RPS1(cpu_to_le32(CMD_STOP));
+
+#if RPS_IRQ
+ // set event counter 1 source as RPS1 interrupt (0x03) (rE4 p53)
+ // use 0x03 to track RPS1 interrupts - increase by 1 every gpio3 is toggled
+ // use 0x15 to track VPE interrupts - increase by 1 every vpeirq() is called
+ saa7146_write(dev, EC1SSR, (0x03<<2) | 3 );
+ // set event counter 1 treshold to maximum allowed value (rEC p55)
+ saa7146_write(dev, ECT1R, 0x3fff );
+#endif
+ // Fix VSYNC level
+ saa7146_setgpio(dev, 3, SAA7146_GPIO_OUTLO);
+ // Set RPS1 Address register to point to RPS code (r108 p42)
+ saa7146_write(dev, RPS_ADDR1, dev->d_rps1.dma_handle);
+ // Enable RPS1, (rFC p33)
+ saa7146_write(dev, MC1, (MASK_13 | MASK_29 ));
+
+
+ mdelay(50);
+ saa7146_setgpio(dev, 3, SAA7146_GPIO_OUTHI);
+ mdelay(150);
+
- if (!(budget = kmalloc (sizeof(struct budget_patch), GFP_KERNEL)))
- return -ENOMEM;
+ if( (saa7146_read(dev, GPIO_CTRL) & 0x10000000) == 0)
+ detected = 1;
- dprintk(2, "budget: %p\n", budget);
+#if RPS_IRQ
+ printk("Event Counter 1 0x%04x\n", saa7146_read(dev, EC1R) & 0x3fff );
+#endif
+ // Disable RPS1
+ saa7146_write(dev, MC1, ( MASK_29 ));
+
+ if(detected == 0)
+ printk("budget-patch not detected.\n");
+ else
+ printk("BUDGET-PATCH DETECTED.\n");
- if ((err = ttpci_budget_init (budget, dev, info, THIS_MODULE))) {
- kfree (budget);
- return err;
- }
-/*
+/* OLD (Original design by Roberto Deza):
** This code will setup the SAA7146_RPS1 to generate a square
** wave on GPIO3, changing when a field (TS_HEIGHT/2 "lines" of
** TS_WIDTH packets) has been acquired on SAA7146_D1B video port;
@@ -392,24 +467,85 @@ static int budget_patch_attach (struct s
** which seems that can be done perfectly without this :-)).
*/
+/* New design (By Emard)
+** this rps1 code will copy internal HS event to GPIO3 pin.
+** GPIO3 is in budget-patch hardware connectd to port B VSYNC
+
+** HS is an internal event of 7146, accessible with RPS
+** and temporarily raised high every n lines
+** (n in defined in the RPS_THRESH1 counter threshold)
+** I think HS is raised high on the beginning of the n-th line
+** and remains high until this n-th line that triggered
+** it is completely received. When the receiption of n-th line
+** ends, HS is lowered.
+
+** To transmit data over DMA, 7146 needs changing state at
+** port B VSYNC pin. Any changing of port B VSYNC will
+** cause some DMA data transfer, with more or less packets loss.
+** It depends on the phase and frequency of VSYNC and
+** the way of 7146 is instructed to trigger on port B (defined
+** in DD1_INIT register, 3rd nibble from the right valid
+** numbers are 0-7, see datasheet)
+**
+** The correct triggering can minimize packet loss,
+** dvbtraffic should give this stable bandwidths:
+** 22k transponder = 33814 kbit/s
+** 27.5k transponder = 38045 kbit/s
+** by experiment it is found that the best results
+** (stable bandwidths and almost no packet loss)
+** are obtained using DD1_INIT triggering number 2
+** (Va at rising edge of VS Fa = HS x VS-failing forced toggle)
+** and a VSYNC phase that occurs in the middle of DMA transfer
+** (about byte 188*512=96256 in the DMA window).
+**
+** Phase of HS is still not clear to me how to control,
+** It just happens to be so. It can be seen if one enables
+** RPS_IRQ and print Event Counter 1 in vpeirq(). Every
+** time RPS_INTERRUPT is called, the Event Counter 1 will
+** increment. That's how the 7146 is programmed to do event
+** counting in this budget-patch.c
+** I *think* HPS setting has something to do with the phase
+** of HS but I cant be 100% sure in that.
+
+** hardware debug note: a working budget card (including budget patch)
+** with vpeirq() interrupt setup in mode "0x90" (every 64K) will
+** generate 3 interrupts per 25-Hz DMA frame of 2*188*512 bytes
+** and that means 3*25=75 Hz of interrupt freqency, as seen by
+** watch cat /proc/interrupts
+**
+** If this frequency is 3x lower (and data received in the DMA
+** buffer don't start with 0x47, but in the middle of packets,
+** whose lengths appear to be like 188 292 188 104 etc.
+** this means VSYNC line is not connected in the hardware.
+** (check soldering pcb and pins)
+** The same behaviour of missing VSYNC can be duplicated on budget
+** cards, by seting DD1_INIT trigger mode 7 in 3rd nibble.
+*/
+
// Setup RPS1 "program" (p35)
+ count = 0;
+
- // Wait reset Source Line Counter Threshold (p36)
- WRITE_RPS1(cpu_to_le32(CMD_PAUSE | RPS_INV | EVT_HS));
// Wait Source Line Counter Threshold (p36)
WRITE_RPS1(cpu_to_le32(CMD_PAUSE | EVT_HS));
// Set GPIO3=1 (p42)
WRITE_RPS1(cpu_to_le32(CMD_WR_REG_MASK | (GPIO_CTRL>>2)));
WRITE_RPS1(cpu_to_le32(GPIO3_MSK));
WRITE_RPS1(cpu_to_le32(SAA7146_GPIO_OUTHI<<24));
+#if RPS_IRQ
+ // issue RPS1 interrupt
+ WRITE_RPS1(cpu_to_le32(CMD_INTERRUPT));
+#endif
// Wait reset Source Line Counter Threshold (p36)
WRITE_RPS1(cpu_to_le32(CMD_PAUSE | RPS_INV | EVT_HS));
- // Wait Source Line Counter Threshold
- WRITE_RPS1(cpu_to_le32(CMD_PAUSE | EVT_HS));
// Set GPIO3=0 (p42)
WRITE_RPS1(cpu_to_le32(CMD_WR_REG_MASK | (GPIO_CTRL>>2)));
WRITE_RPS1(cpu_to_le32(GPIO3_MSK));
WRITE_RPS1(cpu_to_le32(SAA7146_GPIO_OUTLO<<24));
+#if RPS_IRQ
+ // issue RPS1 interrupt
+ WRITE_RPS1(cpu_to_le32(CMD_INTERRUPT));
+#endif
// Jump to begin of RPS program (p37)
WRITE_RPS1(cpu_to_le32(CMD_JUMP));
WRITE_RPS1(cpu_to_le32(dev->d_rps1.dma_handle));
@@ -419,10 +555,31 @@ static int budget_patch_attach (struct s
// Set RPS1 Address register to point to RPS code (r108 p42)
saa7146_write(dev, RPS_ADDR1, dev->d_rps1.dma_handle);
// Set Source Line Counter Threshold, using BRS (rCC p43)
- saa7146_write(dev, RPS_THRESH1, ((TS_HEIGHT/2) | MASK_12));
+ // It generates HS event every TS_HEIGHT lines
+ // this is related to TS_WIDTH set in register
+ // NUM_LINE_BYTE3 in budget-core.c. If NUM_LINE_BYTE
+ // low 16 bits are set to TS_WIDTH bytes (TS_WIDTH=2*188
+ //,then RPS_THRESH1
+ // should be set to trigger every TS_HEIGHT (512) lines.
+ //
+ saa7146_write(dev, RPS_THRESH1, (TS_HEIGHT*1) | MASK_12 );
+
+ // saa7146_write(dev, RPS_THRESH0, ((TS_HEIGHT/2)<<16) |MASK_28| (TS_HEIGHT/2) |MASK_12 );
// Enable RPS1 (rFC p33)
saa7146_write(dev, MC1, (MASK_13 | MASK_29));
+
+ if (!(budget = kmalloc (sizeof(struct budget_patch), GFP_KERNEL)))
+ return -ENOMEM;
+
+ dprintk(2, "budget: %p\n", budget);
+
+ if ((err = ttpci_budget_init (budget, dev, info, THIS_MODULE))) {
+ kfree (budget);
+ return err;
+ }
+
+
dev->ext_priv = budget;
budget->dvb_adapter->priv = budget;
Only in dvb-kernel/linux/drivers/media/dvb/ttpci: budget-patch.c~
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