X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=drivers%2Fmedia%2Fvideo%2Fpvrusb2%2Fpvrusb2-encoder.c;fp=drivers%2Fmedia%2Fvideo%2Fpvrusb2%2Fpvrusb2-encoder.c;h=18a7073501c6037fd845dfdf414d70cee51aefbc;hb=f05f9504c50ed069377d37f02f22e7a16b5921de;hp=0000000000000000000000000000000000000000;hpb=16c70f8c1b54b61c3b951b6fb220df250fe09b32;p=linux-2.6.git diff --git a/drivers/media/video/pvrusb2/pvrusb2-encoder.c b/drivers/media/video/pvrusb2/pvrusb2-encoder.c new file mode 100644 index 000000000..18a707350 --- /dev/null +++ b/drivers/media/video/pvrusb2/pvrusb2-encoder.c @@ -0,0 +1,418 @@ +/* + * + * $Id$ + * + * Copyright (C) 2005 Mike Isely + * Copyright (C) 2004 Aurelien Alleaume + * + * 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 + * + * 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + * + */ + +#include // for linux/firmware.h +#include +#include "pvrusb2-util.h" +#include "pvrusb2-encoder.h" +#include "pvrusb2-hdw-internal.h" +#include "pvrusb2-debug.h" + + + +/* Firmware mailbox flags - definitions found from ivtv */ +#define IVTV_MBOX_FIRMWARE_DONE 0x00000004 +#define IVTV_MBOX_DRIVER_DONE 0x00000002 +#define IVTV_MBOX_DRIVER_BUSY 0x00000001 + + +static int pvr2_encoder_write_words(struct pvr2_hdw *hdw, + const u32 *data, unsigned int dlen) +{ + unsigned int idx; + int ret; + unsigned int offs = 0; + unsigned int chunkCnt; + + /* + + Format: First byte must be 0x01. Remaining 32 bit words are + spread out into chunks of 7 bytes each, little-endian ordered, + offset at zero within each 2 blank bytes following and a + single byte that is 0x44 plus the offset of the word. Repeat + request for additional words, with offset adjusted + accordingly. + + */ + while (dlen) { + chunkCnt = 8; + if (chunkCnt > dlen) chunkCnt = dlen; + memset(hdw->cmd_buffer,0,sizeof(hdw->cmd_buffer)); + hdw->cmd_buffer[0] = 0x01; + for (idx = 0; idx < chunkCnt; idx++) { + hdw->cmd_buffer[1+(idx*7)+6] = 0x44 + idx + offs; + PVR2_DECOMPOSE_LE(hdw->cmd_buffer, 1+(idx*7), + data[idx]); + } + ret = pvr2_send_request(hdw, + hdw->cmd_buffer,1+(chunkCnt*7), + NULL,0); + if (ret) return ret; + data += chunkCnt; + dlen -= chunkCnt; + offs += chunkCnt; + } + + return 0; +} + + +static int pvr2_encoder_read_words(struct pvr2_hdw *hdw,int statusFl, + u32 *data, unsigned int dlen) +{ + unsigned int idx; + int ret; + unsigned int offs = 0; + unsigned int chunkCnt; + + /* + + Format: First byte must be 0x02 (status check) or 0x28 (read + back block of 32 bit words). Next 6 bytes must be zero, + followed by a single byte of 0x44+offset for portion to be + read. Returned data is packed set of 32 bits words that were + read. + + */ + + while (dlen) { + chunkCnt = 16; + if (chunkCnt > dlen) chunkCnt = dlen; + memset(hdw->cmd_buffer,0,sizeof(hdw->cmd_buffer)); + hdw->cmd_buffer[0] = statusFl ? 0x02 : 0x28; + hdw->cmd_buffer[7] = 0x44 + offs; + ret = pvr2_send_request(hdw, + hdw->cmd_buffer,8, + hdw->cmd_buffer,chunkCnt * 4); + if (ret) return ret; + + for (idx = 0; idx < chunkCnt; idx++) { + data[idx] = PVR2_COMPOSE_LE(hdw->cmd_buffer,idx*4); + } + data += chunkCnt; + dlen -= chunkCnt; + offs += chunkCnt; + } + + return 0; +} + + +/* 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_vcmd(struct pvr2_hdw *hdw, int cmd, + int args, ...) +{ + va_list vl; + unsigned int idx; + u32 data[12]; + + if (args > sizeof(data)/sizeof(data[0])) { + pvr2_trace( + PVR2_TRACE_ERROR_LEGS, + "Failed to write cx23416 command" + " - too many arguments" + " (was given %u limit %u)", + args,(unsigned int)(sizeof(data)/sizeof(data[0]))); + return -EINVAL; + } + + va_start(vl, args); + for (idx = 0; idx < args; idx++) { + data[idx] = va_arg(vl, u32); + } + va_end(vl); + + return pvr2_encoder_cmd(hdw,cmd,args,0,data); +} + +int pvr2_encoder_configure(struct pvr2_hdw *hdw) +{ + int ret; + pvr2_trace(PVR2_TRACE_ENCODER,"pvr2_encoder_configure" + " (cx2341x module)"); + hdw->enc_ctl_state.port = CX2341X_PORT_STREAMING; + hdw->enc_ctl_state.width = hdw->res_hor_val; + hdw->enc_ctl_state.height = hdw->res_ver_val; + hdw->enc_ctl_state.is_50hz = ((hdw->std_mask_cur & + (V4L2_STD_NTSC|V4L2_STD_PAL_M)) ? + 0 : 1); + + ret = 0; + + if (!ret) ret = pvr2_encoder_vcmd( + hdw,CX2341X_ENC_SET_NUM_VSYNC_LINES, 2, + 0xf0, 0xf0); + + /* setup firmware to notify us about some events (don't know why...) */ + if (!ret) ret = pvr2_encoder_vcmd( + hdw,CX2341X_ENC_SET_EVENT_NOTIFICATION, 4, + 0, 0, 0x10000000, 0xffffffff); + + if (!ret) ret = pvr2_encoder_vcmd( + hdw,CX2341X_ENC_SET_VBI_LINE, 5, + 0xffffffff,0,0,0,0); + + if (ret) { + pvr2_trace(PVR2_TRACE_ERROR_LEGS, + "Failed to configure cx32416"); + return ret; + } + + ret = cx2341x_update(hdw,pvr2_encoder_cmd, + (hdw->enc_cur_valid ? &hdw->enc_cur_state : NULL), + &hdw->enc_ctl_state); + if (ret) { + pvr2_trace(PVR2_TRACE_ERROR_LEGS, + "Error from cx2341x module code=%d",ret); + return ret; + } + + ret = 0; + + if (!ret) ret = pvr2_encoder_vcmd( + hdw, CX2341X_ENC_INITIALIZE_INPUT, 0); + + if (ret) { + pvr2_trace(PVR2_TRACE_ERROR_LEGS, + "Failed to initialize cx32416 video input"); + return ret; + } + + hdw->subsys_enabled_mask |= (1<enc_cur_state,&hdw->enc_ctl_state, + sizeof(struct cx2341x_mpeg_params)); + hdw->enc_cur_valid = !0; + return 0; +} + + +int pvr2_encoder_start(struct pvr2_hdw *hdw) +{ + int status; + + /* unmask some interrupts */ + pvr2_write_register(hdw, 0x0048, 0xbfffffff); + + /* change some GPIO data */ + pvr2_hdw_gpio_chg_dir(hdw,0xffffffff,0x00000481); + pvr2_hdw_gpio_chg_out(hdw,0xffffffff,0x00000000); + + if (hdw->config == pvr2_config_vbi) { + status = pvr2_encoder_vcmd(hdw,CX2341X_ENC_START_CAPTURE,2, + 0x01,0x14); + } else if (hdw->config == pvr2_config_mpeg) { + status = pvr2_encoder_vcmd(hdw,CX2341X_ENC_START_CAPTURE,2, + 0,0x13); + } else { + status = pvr2_encoder_vcmd(hdw,CX2341X_ENC_START_CAPTURE,2, + 0,0x13); + } + if (!status) { + hdw->subsys_enabled_mask |= (1<config == pvr2_config_vbi) { + status = pvr2_encoder_vcmd(hdw,CX2341X_ENC_STOP_CAPTURE,3, + 0x01,0x01,0x14); + } else if (hdw->config == pvr2_config_mpeg) { + status = pvr2_encoder_vcmd(hdw,CX2341X_ENC_STOP_CAPTURE,3, + 0x01,0,0x13); + } else { + status = pvr2_encoder_vcmd(hdw,CX2341X_ENC_STOP_CAPTURE,3, + 0x01,0,0x13); + } + + /* 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<