/* Retrieve a control enumeration or bit mask value */
int pvr2_ctrl_get_valname(struct pvr2_ctrl *cptr,int val,
char *bptr,unsigned int bmax,
unsigned int *blen)
{
int ret = -EINVAL;
if (!cptr) return 0;
*blen = 0;
LOCK_TAKE(cptr->hdw->big_lock); do {
if (cptr->info->type == pvr2_ctl_enum) {
const char **names;
names = cptr->info->def.type_enum.value_names;
if (pvr2_ctrl_range_check(cptr,val) == 0) {
if (names[val]) {
*blen = scnprintf(
bptr,bmax,"%s",
names[val]);
} else {
*blen = 0;
}
ret = 0;
}
} else if (cptr->info->type == pvr2_ctl_bitmask) {
const char **names;
unsigned int idx;
int msk;
names = cptr->info->def.type_bitmask.bit_names;
val &= cptr->info->def.type_bitmask.valid_bits;
for (idx = 0, msk = 1; val; idx++, msk <<= 1) {
if (val & msk) {
*blen = scnprintf(bptr,bmax,"%s",
names[idx]);
ret = 0;
break;
}
}
}
} while(0); LOCK_GIVE(cptr->hdw->big_lock);
return ret;
}
/* Set/clear specific bits of the given control. */
int pvr2_ctrl_set_mask_value(struct pvr2_ctrl *cptr,int mask,int val)
{
int ret = 0;
if (!cptr) return -EINVAL;
LOCK_TAKE(cptr->hdw->big_lock); do {
if (cptr->info->set_value) {
if (cptr->info->type == pvr2_ctl_bitmask) {
mask &= cptr->info->def.type_bitmask.valid_bits;
} else if ((cptr->info->type == pvr2_ctl_int)||
(cptr->info->type == pvr2_ctl_enum)) {
ret = pvr2_ctrl_range_check(cptr,val);
if (ret < 0) break;
} else if (cptr->info->type != pvr2_ctl_bool) {
break;
}
ret = cptr->info->set_value(cptr,mask,val);
} else {
ret = -EPERM;
}
} while(0); LOCK_GIVE(cptr->hdw->big_lock);
return ret;
}
/* This implements some extra setup for the encoder that seems to be
specific to the PVR USB2 hardware. */
static int pvr2_encoder_prep_config(struct pvr2_hdw *hdw)
{
int ret = 0;
int encMisc3Arg = 0;
#if 0
/* This inexplicable bit happens in the Hauppauge windows
driver (for both 24xxx and 29xxx devices). However I
currently see no difference in behavior with or without
this stuff. Leave this here as a note of its existence,
but don't use it. */
LOCK_TAKE(hdw->ctl_lock); do {
u32 dat[1];
dat[0] = 0x80000640;
pvr2_encoder_write_words(hdw,0x01fe,dat,1);
pvr2_encoder_write_words(hdw,0x023e,dat,1);
} while(0); LOCK_GIVE(hdw->ctl_lock);
#endif
/* Mike Isely <*****@*****.**> 26-Jan-2006 The windows driver
sends the following list of ENC_MISC commands (for both
24xxx and 29xxx devices). Meanings are not entirely clear,
however without the ENC_MISC(3,1) command then we risk
random perpetual video corruption whenever the video input
breaks up for a moment (like when switching channels). */
#if 0
/* This ENC_MISC(5,0) command seems to hurt 29xxx sync
performance on channel changes, but is not a problem on
24xxx devices. */
ret |= pvr2_encoder_vcmd(hdw, CX2341X_ENC_MISC,4, 5,0,0,0);
#endif
/* This ENC_MISC(3,encMisc3Arg) command is critical - without
it there will eventually be video corruption. Also, the
saa7115 case is strange - the Windows driver is passing 1
regardless of device type but if we have 1 for saa7115
devices the video turns sluggish. */
if (hdw->hdw_desc->flag_has_cx25840) {
encMisc3Arg = 1;
} else {
encMisc3Arg = 0;
}
ret |= pvr2_encoder_vcmd(hdw, CX2341X_ENC_MISC,4, 3,
encMisc3Arg,0,0);
ret |= pvr2_encoder_vcmd(hdw, CX2341X_ENC_MISC,4, 8,0,0,0);
#if 0
/* This ENC_MISC(4,1) command is poisonous, so it is commented
out. But I'm leaving it here anyway to document its
existence in the Windows driver. The effect of this
command is that apps displaying the stream become sluggish
with stuttering video. */
ret |= pvr2_encoder_vcmd(hdw, CX2341X_ENC_MISC,4, 4,1,0,0);
#endif
ret |= pvr2_encoder_vcmd(hdw, CX2341X_ENC_MISC,4, 0,3,0,0);
ret |= pvr2_encoder_vcmd(hdw, CX2341X_ENC_MISC,4,15,0,0,0);
/* prevent the PTSs from slowly drifting away in the generated
MPEG stream */
ret |= pvr2_encoder_vcmd(hdw, CX2341X_ENC_MISC, 2, 4, 1);
return ret;
}
/* This prototype is set up to be compatible with the
cx2341x_mbox_func prototype in cx2341x.h, which should be in
kernels 2.6.18 or later. We do this so that we can enable
cx2341x.ko to write to our encoder (by handing it a pointer to this
function). For earlier kernels this doesn't really matter. */
static int pvr2_encoder_cmd(void *ctxt,
u32 cmd,
int arg_cnt_send,
int arg_cnt_recv,
u32 *argp)
{
unsigned int poll_count;
unsigned int try_count = 0;
int retry_flag;
int ret = 0;
unsigned int idx;
/* These sizes look to be limited by the FX2 firmware implementation */
u32 wrData[16];
u32 rdData[16];
struct pvr2_hdw *hdw = (struct pvr2_hdw *)ctxt;
/*
The encoder seems to speak entirely using blocks 32 bit words.
In ivtv driver terms, this is a mailbox at MBOX_BASE which we
populate with data and watch what the hardware does with it.
The first word is a set of flags used to control the
transaction, the second word is the command to execute, the
third byte is zero (ivtv driver suggests that this is some
kind of return value), and the fourth byte is a specified
timeout (windows driver always uses 0x00060000 except for one
case when it is zero). All successive words are the argument
words for the command.
First, write out the entire set of words, with the first word
being zero.
Next, write out just the first word again, but set it to
IVTV_MBOX_DRIVER_DONE | IVTV_DRIVER_BUSY this time (which
probably means "go").
Next, read back the return count words. Check the first word,
which should have IVTV_MBOX_FIRMWARE_DONE set. If however
that bit is not set, then the command isn't done so repeat the
read until it is set.
Finally, write out just the first word again, but set it to
0x0 this time (which probably means "idle").
*/
if (arg_cnt_send > (ARRAY_SIZE(wrData) - 4)) {
pvr2_trace(
PVR2_TRACE_ERROR_LEGS,
"Failed to write cx23416 command"
" - too many input arguments"
" (was given %u limit %lu)",
arg_cnt_send, (long unsigned) ARRAY_SIZE(wrData) - 4);
return -EINVAL;
}
if (arg_cnt_recv > (ARRAY_SIZE(rdData) - 4)) {
pvr2_trace(
PVR2_TRACE_ERROR_LEGS,
"Failed to write cx23416 command"
" - too many return arguments"
" (was given %u limit %lu)",
arg_cnt_recv, (long unsigned) ARRAY_SIZE(rdData) - 4);
return -EINVAL;
}
LOCK_TAKE(hdw->ctl_lock); do {
if (!hdw->state_encoder_ok) {
ret = -EIO;
break;
}
retry_flag = 0;
try_count++;
ret = 0;
wrData[0] = 0;
wrData[1] = cmd;
wrData[2] = 0;
wrData[3] = 0x00060000;
for (idx = 0; idx < arg_cnt_send; idx++) {
wrData[idx+4] = argp[idx];
}
for (; idx < ARRAY_SIZE(wrData) - 4; idx++) {
wrData[idx+4] = 0;
}
ret = pvr2_encoder_write_words(hdw,MBOX_BASE,wrData,idx);
if (ret) break;
wrData[0] = IVTV_MBOX_DRIVER_DONE|IVTV_MBOX_DRIVER_BUSY;
ret = pvr2_encoder_write_words(hdw,MBOX_BASE,wrData,1);
if (ret) break;
poll_count = 0;
while (1) {
poll_count++;
ret = pvr2_encoder_read_words(hdw,MBOX_BASE,rdData,
arg_cnt_recv+4);
if (ret) {
break;
}
if (rdData[0] & IVTV_MBOX_FIRMWARE_DONE) {
break;
}
if (rdData[0] && (poll_count < 1000)) continue;
if (!rdData[0]) {
retry_flag = !0;
pvr2_trace(
PVR2_TRACE_ERROR_LEGS,
"Encoder timed out waiting for us"
"; arranging to retry");
} else {
pvr2_trace(
PVR2_TRACE_ERROR_LEGS,
"***WARNING*** device's encoder"
" appears to be stuck"
" (status=0x%08x)",rdData[0]);
}
pvr2_trace(
PVR2_TRACE_ERROR_LEGS,
"Encoder command: 0x%02x",cmd);
for (idx = 4; idx < arg_cnt_send; idx++) {
pvr2_trace(
PVR2_TRACE_ERROR_LEGS,
"Encoder arg%d: 0x%08x",
idx-3,wrData[idx]);
}
ret = -EBUSY;
break;
}
if (retry_flag) {
if (try_count < 20) continue;
pvr2_trace(
PVR2_TRACE_ERROR_LEGS,
"Too many retries...");
ret = -EBUSY;
}
if (ret) {
del_timer_sync(&hdw->encoder_run_timer);
hdw->state_encoder_ok = 0;
pvr2_trace(PVR2_TRACE_STBITS,
"State bit %s <-- %s",
"state_encoder_ok",
(hdw->state_encoder_ok ? "true" : "false"));
if (hdw->state_encoder_runok) {
hdw->state_encoder_runok = 0;
pvr2_trace(PVR2_TRACE_STBITS,
"State bit %s <-- %s",
"state_encoder_runok",
(hdw->state_encoder_runok ?
"true" : "false"));
}
pvr2_trace(
PVR2_TRACE_ERROR_LEGS,
"Giving up on command."
" This is normally recovered via a firmware"
" reload and re-initialization; concern"
" is only warranted if this happens repeatedly"
" and rapidly.");
break;
}
wrData[0] = 0x7;
for (idx = 0; idx < arg_cnt_recv; idx++) {
argp[idx] = rdData[idx+4];
}
wrData[0] = 0x0;
ret = pvr2_encoder_write_words(hdw,MBOX_BASE,wrData,1);
if (ret) break;
} while(0); LOCK_GIVE(hdw->ctl_lock);
return ret;
}
/* This prototype is set up to be compatible with the
cx2341x_mbox_func prototype in cx2341x.h, which should be in
kernels 2.6.18 or later. We do this so that we can enable
cx2341x.ko to write to our encoder (by handing it a pointer to this
function). For earlier kernels this doesn't really matter. */
static int pvr2_encoder_cmd(void *ctxt,
int cmd,
int arg_cnt_send,
int arg_cnt_recv,
u32 *argp)
{
unsigned int poll_count;
int ret = 0;
unsigned int idx;
/* These sizes look to be limited by the FX2 firmware implementation */
u32 wrData[16];
u32 rdData[16];
struct pvr2_hdw *hdw = (struct pvr2_hdw *)ctxt;
/*
The encoder seems to speak entirely using blocks 32 bit words.
In ivtv driver terms, this is a mailbox which we populate with
data and watch what the hardware does with it. The first word
is a set of flags used to control the transaction, the second
word is the command to execute, the third byte is zero (ivtv
driver suggests that this is some kind of return value), and
the fourth byte is a specified timeout (windows driver always
uses 0x00060000 except for one case when it is zero). All
successive words are the argument words for the command.
First, write out the entire set of words, with the first word
being zero.
Next, write out just the first word again, but set it to
IVTV_MBOX_DRIVER_DONE | IVTV_DRIVER_BUSY this time (which
probably means "go").
Next, read back 16 words as status. Check the first word,
which should have IVTV_MBOX_FIRMWARE_DONE set. If however
that bit is not set, then the command isn't done so repeat the
read.
Next, read back 32 words and compare with the original
arugments. Hopefully they will match.
Finally, write out just the first word again, but set it to
0x0 this time (which probably means "idle").
*/
if (arg_cnt_send > (sizeof(wrData)/sizeof(wrData[0]))-4) {
pvr2_trace(
PVR2_TRACE_ERROR_LEGS,
"Failed to write cx23416 command"
" - too many input arguments"
" (was given %u limit %u)",
arg_cnt_send,
(unsigned int)(sizeof(wrData)/sizeof(wrData[0])) - 4);
return -EINVAL;
}
if (arg_cnt_recv > (sizeof(rdData)/sizeof(rdData[0]))-4) {
pvr2_trace(
PVR2_TRACE_ERROR_LEGS,
"Failed to write cx23416 command"
" - too many return arguments"
" (was given %u limit %u)",
arg_cnt_recv,
(unsigned int)(sizeof(rdData)/sizeof(rdData[0])) - 4);
return -EINVAL;
}
LOCK_TAKE(hdw->ctl_lock); do {
wrData[0] = 0;
wrData[1] = cmd;
wrData[2] = 0;
wrData[3] = 0x00060000;
for (idx = 0; idx < arg_cnt_send; idx++) {
wrData[idx+4] = argp[idx];
}
for (; idx < (sizeof(wrData)/sizeof(wrData[0]))-4; idx++) {
wrData[idx+4] = 0;
}
ret = pvr2_encoder_write_words(hdw,wrData,idx);
if (ret) break;
wrData[0] = IVTV_MBOX_DRIVER_DONE|IVTV_MBOX_DRIVER_BUSY;
ret = pvr2_encoder_write_words(hdw,wrData,1);
if (ret) break;
poll_count = 0;
while (1) {
if (poll_count < 10000000) poll_count++;
ret = pvr2_encoder_read_words(hdw,!0,rdData,1);
if (ret) break;
if (rdData[0] & IVTV_MBOX_FIRMWARE_DONE) {
break;
}
if (poll_count == 100) {
pvr2_trace(
PVR2_TRACE_ERROR_LEGS,
"***WARNING*** device's encoder"
" appears to be stuck"
" (status=0%08x)",rdData[0]);
pvr2_trace(
PVR2_TRACE_ERROR_LEGS,
"Encoder command: 0x%02x",cmd);
for (idx = 4; idx < arg_cnt_send; idx++) {
pvr2_trace(
PVR2_TRACE_ERROR_LEGS,
"Encoder arg%d: 0x%08x",
idx-3,wrData[idx]);
}
pvr2_trace(
PVR2_TRACE_ERROR_LEGS,
"Giving up waiting."
" It is likely that"
" this is a bad idea...");
ret = -EBUSY;
break;
}
}
if (ret) break;
wrData[0] = 0x7;
ret = pvr2_encoder_read_words(
hdw,0,rdData,
sizeof(rdData)/sizeof(rdData[0]));
if (ret) break;
for (idx = 0; idx < arg_cnt_recv; idx++) {
argp[idx] = rdData[idx+4];
}
wrData[0] = 0x0;
ret = pvr2_encoder_write_words(hdw,wrData,1);
if (ret) break;
} while(0); LOCK_GIVE(hdw->ctl_lock);
return ret;
}
static int pvr2_encoder_cmd(void *ctxt,
u32 cmd,
int arg_cnt_send,
int arg_cnt_recv,
u32 *argp)
{
unsigned int poll_count;
unsigned int try_count = 0;
int retry_flag;
int ret = 0;
unsigned int idx;
u32 wrData[16];
u32 rdData[16];
struct pvr2_hdw *hdw = (struct pvr2_hdw *)ctxt;
if (arg_cnt_send > (ARRAY_SIZE(wrData) - 4)) {
pvr2_trace(
PVR2_TRACE_ERROR_LEGS,
"Failed to write cx23416 command"
" - too many input arguments"
" (was given %u limit %lu)",
arg_cnt_send, (long unsigned) ARRAY_SIZE(wrData) - 4);
return -EINVAL;
}
if (arg_cnt_recv > (ARRAY_SIZE(rdData) - 4)) {
pvr2_trace(
PVR2_TRACE_ERROR_LEGS,
"Failed to write cx23416 command"
" - too many return arguments"
" (was given %u limit %lu)",
arg_cnt_recv, (long unsigned) ARRAY_SIZE(rdData) - 4);
return -EINVAL;
}
LOCK_TAKE(hdw->ctl_lock); do {
if (!hdw->state_encoder_ok) {
ret = -EIO;
break;
}
retry_flag = 0;
try_count++;
ret = 0;
wrData[0] = 0;
wrData[1] = cmd;
wrData[2] = 0;
wrData[3] = 0x00060000;
for (idx = 0; idx < arg_cnt_send; idx++) {
wrData[idx+4] = argp[idx];
}
for (; idx < ARRAY_SIZE(wrData) - 4; idx++) {
wrData[idx+4] = 0;
}
ret = pvr2_encoder_write_words(hdw,MBOX_BASE,wrData,idx);
if (ret) break;
wrData[0] = IVTV_MBOX_DRIVER_DONE|IVTV_MBOX_DRIVER_BUSY;
ret = pvr2_encoder_write_words(hdw,MBOX_BASE,wrData,1);
if (ret) break;
poll_count = 0;
while (1) {
poll_count++;
ret = pvr2_encoder_read_words(hdw,MBOX_BASE,rdData,
arg_cnt_recv+4);
if (ret) {
break;
}
if (rdData[0] & IVTV_MBOX_FIRMWARE_DONE) {
break;
}
if (rdData[0] && (poll_count < 1000)) continue;
if (!rdData[0]) {
retry_flag = !0;
pvr2_trace(
PVR2_TRACE_ERROR_LEGS,
"Encoder timed out waiting for us"
"; arranging to retry");
} else {
pvr2_trace(
PVR2_TRACE_ERROR_LEGS,
"***WARNING*** device's encoder"
" appears to be stuck"
" (status=0x%08x)",rdData[0]);
}
pvr2_trace(
PVR2_TRACE_ERROR_LEGS,
"Encoder command: 0x%02x",cmd);
for (idx = 4; idx < arg_cnt_send; idx++) {
pvr2_trace(
PVR2_TRACE_ERROR_LEGS,
"Encoder arg%d: 0x%08x",
idx-3,wrData[idx]);
}
ret = -EBUSY;
break;
}
if (retry_flag) {
if (try_count < 20) continue;
pvr2_trace(
PVR2_TRACE_ERROR_LEGS,
"Too many retries...");
ret = -EBUSY;
}
if (ret) {
del_timer_sync(&hdw->encoder_run_timer);
hdw->state_encoder_ok = 0;
pvr2_trace(PVR2_TRACE_STBITS,
"State bit %s <-- %s",
"state_encoder_ok",
(hdw->state_encoder_ok ? "true" : "false"));
if (hdw->state_encoder_runok) {
hdw->state_encoder_runok = 0;
pvr2_trace(PVR2_TRACE_STBITS,
"State bit %s <-- %s",
"state_encoder_runok",
(hdw->state_encoder_runok ?
"true" : "false"));
}
pvr2_trace(
PVR2_TRACE_ERROR_LEGS,
"Giving up on command."
" This is normally recovered via a firmware"
" reload and re-initialization; concern"
" is only warranted if this happens repeatedly"
" and rapidly.");
break;
}
wrData[0] = 0x7;
for (idx = 0; idx < arg_cnt_recv; idx++) {
argp[idx] = rdData[idx+4];
}
wrData[0] = 0x0;
ret = pvr2_encoder_write_words(hdw,MBOX_BASE,wrData,1);
if (ret) break;
} while(0); LOCK_GIVE(hdw->ctl_lock);
return ret;
}