mirror of https://gitee.com/openkylin/linux.git
532 lines
14 KiB
C
532 lines
14 KiB
C
/*
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*
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* $Id$
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*
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* Copyright (C) 2005 Mike Isely <isely@pobox.com>
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* Copyright (C) 2004 Aurelien Alleaume <slts@free.fr>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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*/
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#include <linux/device.h> // for linux/firmware.h
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#include <linux/firmware.h>
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#include "pvrusb2-util.h"
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#include "pvrusb2-encoder.h"
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#include "pvrusb2-hdw-internal.h"
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#include "pvrusb2-debug.h"
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#include "pvrusb2-fx2-cmd.h"
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/* Firmware mailbox flags - definitions found from ivtv */
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#define IVTV_MBOX_FIRMWARE_DONE 0x00000004
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#define IVTV_MBOX_DRIVER_DONE 0x00000002
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#define IVTV_MBOX_DRIVER_BUSY 0x00000001
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#define MBOX_BASE 0x44
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static int pvr2_encoder_write_words(struct pvr2_hdw *hdw,
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unsigned int offs,
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const u32 *data, unsigned int dlen)
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{
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unsigned int idx,addr;
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unsigned int bAddr;
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int ret;
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unsigned int chunkCnt;
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/*
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Format: First byte must be 0x01. Remaining 32 bit words are
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spread out into chunks of 7 bytes each, with the first 4 bytes
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being the data word (little endian), and the next 3 bytes
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being the address where that data word is to be written (big
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endian). Repeat request for additional words, with offset
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adjusted accordingly.
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*/
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while (dlen) {
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chunkCnt = 8;
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if (chunkCnt > dlen) chunkCnt = dlen;
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memset(hdw->cmd_buffer,0,sizeof(hdw->cmd_buffer));
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bAddr = 0;
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hdw->cmd_buffer[bAddr++] = FX2CMD_MEM_WRITE_DWORD;
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for (idx = 0; idx < chunkCnt; idx++) {
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addr = idx + offs;
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hdw->cmd_buffer[bAddr+6] = (addr & 0xffu);
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hdw->cmd_buffer[bAddr+5] = ((addr>>8) & 0xffu);
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hdw->cmd_buffer[bAddr+4] = ((addr>>16) & 0xffu);
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PVR2_DECOMPOSE_LE(hdw->cmd_buffer, bAddr,data[idx]);
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bAddr += 7;
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}
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ret = pvr2_send_request(hdw,
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hdw->cmd_buffer,1+(chunkCnt*7),
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NULL,0);
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if (ret) return ret;
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data += chunkCnt;
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dlen -= chunkCnt;
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offs += chunkCnt;
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}
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return 0;
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}
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static int pvr2_encoder_read_words(struct pvr2_hdw *hdw,
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unsigned int offs,
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u32 *data, unsigned int dlen)
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{
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unsigned int idx;
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int ret;
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unsigned int chunkCnt;
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/*
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Format: First byte must be 0x02 (status check) or 0x28 (read
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back block of 32 bit words). Next 6 bytes must be zero,
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followed by a single byte of MBOX_BASE+offset for portion to
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be read. Returned data is packed set of 32 bits words that
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were read.
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*/
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while (dlen) {
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chunkCnt = 16;
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if (chunkCnt > dlen) chunkCnt = dlen;
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if (chunkCnt < 16) chunkCnt = 1;
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hdw->cmd_buffer[0] =
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((chunkCnt == 1) ?
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FX2CMD_MEM_READ_DWORD : FX2CMD_MEM_READ_64BYTES);
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hdw->cmd_buffer[1] = 0;
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hdw->cmd_buffer[2] = 0;
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hdw->cmd_buffer[3] = 0;
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hdw->cmd_buffer[4] = 0;
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hdw->cmd_buffer[5] = ((offs>>16) & 0xffu);
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hdw->cmd_buffer[6] = ((offs>>8) & 0xffu);
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hdw->cmd_buffer[7] = (offs & 0xffu);
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ret = pvr2_send_request(hdw,
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hdw->cmd_buffer,8,
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hdw->cmd_buffer,
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(chunkCnt == 1 ? 4 : 16 * 4));
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if (ret) return ret;
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for (idx = 0; idx < chunkCnt; idx++) {
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data[idx] = PVR2_COMPOSE_LE(hdw->cmd_buffer,idx*4);
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}
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data += chunkCnt;
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dlen -= chunkCnt;
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offs += chunkCnt;
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}
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return 0;
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}
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/* This prototype is set up to be compatible with the
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cx2341x_mbox_func prototype in cx2341x.h, which should be in
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kernels 2.6.18 or later. We do this so that we can enable
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cx2341x.ko to write to our encoder (by handing it a pointer to this
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function). For earlier kernels this doesn't really matter. */
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static int pvr2_encoder_cmd(void *ctxt,
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int cmd,
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int arg_cnt_send,
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int arg_cnt_recv,
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u32 *argp)
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{
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unsigned int poll_count;
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unsigned int try_count = 0;
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int retry_flag;
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int ret = 0;
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unsigned int idx;
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/* These sizes look to be limited by the FX2 firmware implementation */
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u32 wrData[16];
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u32 rdData[16];
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struct pvr2_hdw *hdw = (struct pvr2_hdw *)ctxt;
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/*
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The encoder seems to speak entirely using blocks 32 bit words.
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In ivtv driver terms, this is a mailbox at MBOX_BASE which we
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populate with data and watch what the hardware does with it.
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The first word is a set of flags used to control the
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transaction, the second word is the command to execute, the
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third byte is zero (ivtv driver suggests that this is some
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kind of return value), and the fourth byte is a specified
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timeout (windows driver always uses 0x00060000 except for one
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case when it is zero). All successive words are the argument
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words for the command.
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First, write out the entire set of words, with the first word
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being zero.
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Next, write out just the first word again, but set it to
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IVTV_MBOX_DRIVER_DONE | IVTV_DRIVER_BUSY this time (which
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probably means "go").
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Next, read back the return count words. Check the first word,
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which should have IVTV_MBOX_FIRMWARE_DONE set. If however
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that bit is not set, then the command isn't done so repeat the
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read until it is set.
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Finally, write out just the first word again, but set it to
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0x0 this time (which probably means "idle").
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*/
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if (arg_cnt_send > (ARRAY_SIZE(wrData) - 4)) {
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pvr2_trace(
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PVR2_TRACE_ERROR_LEGS,
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"Failed to write cx23416 command"
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" - too many input arguments"
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" (was given %u limit %lu)",
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arg_cnt_send, (long unsigned) ARRAY_SIZE(wrData) - 4);
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return -EINVAL;
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}
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if (arg_cnt_recv > (ARRAY_SIZE(rdData) - 4)) {
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pvr2_trace(
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PVR2_TRACE_ERROR_LEGS,
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"Failed to write cx23416 command"
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" - too many return arguments"
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" (was given %u limit %lu)",
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arg_cnt_recv, (long unsigned) ARRAY_SIZE(rdData) - 4);
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return -EINVAL;
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}
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LOCK_TAKE(hdw->ctl_lock); do {
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retry_flag = 0;
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try_count++;
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ret = 0;
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wrData[0] = 0;
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wrData[1] = cmd;
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wrData[2] = 0;
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wrData[3] = 0x00060000;
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for (idx = 0; idx < arg_cnt_send; idx++) {
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wrData[idx+4] = argp[idx];
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}
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for (; idx < ARRAY_SIZE(wrData) - 4; idx++) {
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wrData[idx+4] = 0;
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}
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ret = pvr2_encoder_write_words(hdw,MBOX_BASE,wrData,idx);
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if (ret) break;
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wrData[0] = IVTV_MBOX_DRIVER_DONE|IVTV_MBOX_DRIVER_BUSY;
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ret = pvr2_encoder_write_words(hdw,MBOX_BASE,wrData,1);
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if (ret) break;
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poll_count = 0;
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while (1) {
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poll_count++;
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ret = pvr2_encoder_read_words(hdw,MBOX_BASE,rdData,
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arg_cnt_recv+4);
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if (ret) {
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break;
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}
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if (rdData[0] & IVTV_MBOX_FIRMWARE_DONE) {
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break;
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}
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if (rdData[0] && (poll_count < 1000)) continue;
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if (!rdData[0]) {
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retry_flag = !0;
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pvr2_trace(
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PVR2_TRACE_ERROR_LEGS,
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"Encoder timed out waiting for us"
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"; arranging to retry");
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} else {
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pvr2_trace(
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PVR2_TRACE_ERROR_LEGS,
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"***WARNING*** device's encoder"
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" appears to be stuck"
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" (status=0x%08x)",rdData[0]);
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}
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pvr2_trace(
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PVR2_TRACE_ERROR_LEGS,
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"Encoder command: 0x%02x",cmd);
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for (idx = 4; idx < arg_cnt_send; idx++) {
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pvr2_trace(
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PVR2_TRACE_ERROR_LEGS,
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"Encoder arg%d: 0x%08x",
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idx-3,wrData[idx]);
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}
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ret = -EBUSY;
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break;
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}
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if (retry_flag) {
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if (try_count < 20) continue;
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pvr2_trace(
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PVR2_TRACE_ERROR_LEGS,
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"Too many retries...");
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ret = -EBUSY;
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}
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if (ret) {
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pvr2_trace(
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PVR2_TRACE_ERROR_LEGS,
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"Giving up on command."
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" It is likely that"
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" this is a bad idea...");
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break;
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}
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wrData[0] = 0x7;
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for (idx = 0; idx < arg_cnt_recv; idx++) {
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argp[idx] = rdData[idx+4];
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}
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wrData[0] = 0x0;
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ret = pvr2_encoder_write_words(hdw,MBOX_BASE,wrData,1);
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if (ret) break;
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} while(0); LOCK_GIVE(hdw->ctl_lock);
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return ret;
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}
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static int pvr2_encoder_vcmd(struct pvr2_hdw *hdw, int cmd,
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int args, ...)
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{
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va_list vl;
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unsigned int idx;
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u32 data[12];
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if (args > ARRAY_SIZE(data)) {
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pvr2_trace(
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PVR2_TRACE_ERROR_LEGS,
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"Failed to write cx23416 command"
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" - too many arguments"
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" (was given %u limit %lu)",
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args, (long unsigned) ARRAY_SIZE(data));
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return -EINVAL;
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}
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va_start(vl, args);
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for (idx = 0; idx < args; idx++) {
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data[idx] = va_arg(vl, u32);
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}
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va_end(vl);
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return pvr2_encoder_cmd(hdw,cmd,args,0,data);
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}
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/* This implements some extra setup for the encoder that seems to be
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specific to the PVR USB2 hardware. */
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int pvr2_encoder_prep_config(struct pvr2_hdw *hdw)
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{
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int ret = 0;
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int encMisc3Arg = 0;
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#if 0
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/* This inexplicable bit happens in the Hauppage windows
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driver (for both 24xxx and 29xxx devices). However I
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currently see no difference in behavior with or without
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this stuff. Leave this here as a note of its existence,
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but don't use it. */
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LOCK_TAKE(hdw->ctl_lock); do {
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u32 dat[1];
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dat[0] = 0x80000640;
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pvr2_encoder_write_words(hdw,0x01fe,dat,1);
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pvr2_encoder_write_words(hdw,0x023e,dat,1);
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} while(0); LOCK_GIVE(hdw->ctl_lock);
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#endif
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/* Mike Isely <isely@pobox.com> 26-Jan-2006 The windows driver
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sends the following list of ENC_MISC commands (for both
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24xxx and 29xxx devices). Meanings are not entirely clear,
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however without the ENC_MISC(3,1) command then we risk
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random perpetual video corruption whenever the video input
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breaks up for a moment (like when switching channels). */
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#if 0
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/* This ENC_MISC(5,0) command seems to hurt 29xxx sync
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performance on channel changes, but is not a problem on
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24xxx devices. */
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ret |= pvr2_encoder_vcmd(hdw, CX2341X_ENC_MISC,4, 5,0,0,0);
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#endif
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/* This ENC_MISC(3,encMisc3Arg) command is critical - without
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it there will eventually be video corruption. Also, the
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29xxx case is strange - the Windows driver is passing 1
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regardless of device type but if we have 1 for 29xxx device
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the video turns sluggish. */
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switch (hdw->hdw_type) {
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case PVR2_HDW_TYPE_24XXX: encMisc3Arg = 1; break;
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case PVR2_HDW_TYPE_29XXX: encMisc3Arg = 0; break;
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default: break;
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}
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ret |= pvr2_encoder_vcmd(hdw, CX2341X_ENC_MISC,4, 3,
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encMisc3Arg,0,0);
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ret |= pvr2_encoder_vcmd(hdw, CX2341X_ENC_MISC,4, 8,0,0,0);
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#if 0
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/* This ENC_MISC(4,1) command is poisonous, so it is commented
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out. But I'm leaving it here anyway to document its
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existence in the Windows driver. The effect of this
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command is that apps displaying the stream become sluggish
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with stuttering video. */
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ret |= pvr2_encoder_vcmd(hdw, CX2341X_ENC_MISC,4, 4,1,0,0);
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#endif
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ret |= pvr2_encoder_vcmd(hdw, CX2341X_ENC_MISC,4, 0,3,0,0);
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ret |= pvr2_encoder_vcmd(hdw, CX2341X_ENC_MISC,4,15,0,0,0);
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return ret;
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}
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int pvr2_encoder_configure(struct pvr2_hdw *hdw)
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{
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int ret;
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pvr2_trace(PVR2_TRACE_ENCODER,"pvr2_encoder_configure"
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" (cx2341x module)");
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hdw->enc_ctl_state.port = CX2341X_PORT_STREAMING;
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hdw->enc_ctl_state.width = hdw->res_hor_val;
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hdw->enc_ctl_state.height = hdw->res_ver_val;
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hdw->enc_ctl_state.is_50hz = ((hdw->std_mask_cur &
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(V4L2_STD_NTSC|V4L2_STD_PAL_M)) ?
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0 : 1);
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ret = 0;
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ret |= pvr2_encoder_prep_config(hdw);
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if (!ret) ret = pvr2_encoder_vcmd(
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hdw,CX2341X_ENC_SET_NUM_VSYNC_LINES, 2,
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0xf0, 0xf0);
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/* setup firmware to notify us about some events (don't know why...) */
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if (!ret) ret = pvr2_encoder_vcmd(
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hdw,CX2341X_ENC_SET_EVENT_NOTIFICATION, 4,
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0, 0, 0x10000000, 0xffffffff);
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if (!ret) ret = pvr2_encoder_vcmd(
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hdw,CX2341X_ENC_SET_VBI_LINE, 5,
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0xffffffff,0,0,0,0);
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if (ret) {
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pvr2_trace(PVR2_TRACE_ERROR_LEGS,
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"Failed to configure cx23416");
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return ret;
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}
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ret = cx2341x_update(hdw,pvr2_encoder_cmd,
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(hdw->enc_cur_valid ? &hdw->enc_cur_state : NULL),
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&hdw->enc_ctl_state);
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if (ret) {
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pvr2_trace(PVR2_TRACE_ERROR_LEGS,
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"Error from cx2341x module code=%d",ret);
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return ret;
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}
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ret = 0;
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if (!ret) ret = pvr2_encoder_vcmd(
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hdw, CX2341X_ENC_INITIALIZE_INPUT, 0);
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if (ret) {
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pvr2_trace(PVR2_TRACE_ERROR_LEGS,
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"Failed to initialize cx23416 video input");
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return ret;
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}
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hdw->subsys_enabled_mask |= (1<<PVR2_SUBSYS_B_ENC_CFG);
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memcpy(&hdw->enc_cur_state,&hdw->enc_ctl_state,
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sizeof(struct cx2341x_mpeg_params));
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hdw->enc_cur_valid = !0;
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return 0;
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}
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int pvr2_encoder_start(struct pvr2_hdw *hdw)
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{
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int status;
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/* unmask some interrupts */
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pvr2_write_register(hdw, 0x0048, 0xbfffffff);
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/* change some GPIO data */
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pvr2_hdw_gpio_chg_dir(hdw,0xffffffff,0x00000481);
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pvr2_hdw_gpio_chg_out(hdw,0xffffffff,0x00000000);
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pvr2_encoder_vcmd(hdw,CX2341X_ENC_MUTE_VIDEO,1,
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hdw->input_val == PVR2_CVAL_INPUT_RADIO ? 1 : 0);
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switch (hdw->config) {
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case pvr2_config_vbi:
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status = pvr2_encoder_vcmd(hdw,CX2341X_ENC_START_CAPTURE,2,
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0x01,0x14);
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break;
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case pvr2_config_mpeg:
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status = pvr2_encoder_vcmd(hdw,CX2341X_ENC_START_CAPTURE,2,
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0,0x13);
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break;
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default: /* Unhandled cases for now */
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status = pvr2_encoder_vcmd(hdw,CX2341X_ENC_START_CAPTURE,2,
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0,0x13);
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break;
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}
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if (!status) {
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hdw->subsys_enabled_mask |= (1<<PVR2_SUBSYS_B_ENC_RUN);
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}
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return status;
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}
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|
|
int pvr2_encoder_stop(struct pvr2_hdw *hdw)
|
|
{
|
|
int status;
|
|
|
|
/* mask all interrupts */
|
|
pvr2_write_register(hdw, 0x0048, 0xffffffff);
|
|
|
|
switch (hdw->config) {
|
|
case pvr2_config_vbi:
|
|
status = pvr2_encoder_vcmd(hdw,CX2341X_ENC_STOP_CAPTURE,3,
|
|
0x01,0x01,0x14);
|
|
break;
|
|
case pvr2_config_mpeg:
|
|
status = pvr2_encoder_vcmd(hdw,CX2341X_ENC_STOP_CAPTURE,3,
|
|
0x01,0,0x13);
|
|
break;
|
|
default: /* Unhandled cases for now */
|
|
status = pvr2_encoder_vcmd(hdw,CX2341X_ENC_STOP_CAPTURE,3,
|
|
0x01,0,0x13);
|
|
break;
|
|
}
|
|
|
|
/* change some GPIO data */
|
|
/* Note: Bit d7 of dir appears to control the LED. So we shut it
|
|
off here. */
|
|
pvr2_hdw_gpio_chg_dir(hdw,0xffffffff,0x00000401);
|
|
pvr2_hdw_gpio_chg_out(hdw,0xffffffff,0x00000000);
|
|
|
|
if (!status) {
|
|
hdw->subsys_enabled_mask &= ~(1<<PVR2_SUBSYS_B_ENC_RUN);
|
|
}
|
|
return status;
|
|
}
|
|
|
|
|
|
/*
|
|
Stuff for Emacs to see, in order to encourage consistent editing style:
|
|
*** Local Variables: ***
|
|
*** mode: c ***
|
|
*** fill-column: 70 ***
|
|
*** tab-width: 8 ***
|
|
*** c-basic-offset: 8 ***
|
|
*** End: ***
|
|
*/
|