diff options
Diffstat (limited to 'v4l_experimental/pvrusb2/pvrusb2-eeprom.c')
| -rw-r--r-- | v4l_experimental/pvrusb2/pvrusb2-eeprom.c | 251 |
1 files changed, 0 insertions, 251 deletions
diff --git a/v4l_experimental/pvrusb2/pvrusb2-eeprom.c b/v4l_experimental/pvrusb2/pvrusb2-eeprom.c deleted file mode 100644 index 9df9fd3eb..000000000 --- a/v4l_experimental/pvrusb2/pvrusb2-eeprom.c +++ /dev/null @@ -1,251 +0,0 @@ -/* - * - * $Id: pvrusb2-eeprom.c,v 1.5 2006/01/14 19:09:50 mcisely Exp $ - * - * Copyright (C) 2005 Mike Isely <isely@pobox.com> - * Copyright (C) 2004 Aurelien Alleaume <slts@free.fr> - * - * 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 "pvrusb2-eeprom.h" -#include "pvrusb2-hdw-internal.h" -#include "pvrusb2-debug.h" -#include "compat.h" - -#define trace_eeprom(...) pvr2_trace(PVR2_TRACE_EEPROM,__VA_ARGS__) - -/* - - isely@pobox.com 16-Oct-2005 - There are two method by which we can - theoretically retrieve information from the device's eeprom: - - Method #1: We expect tveeprom to attach to our I2C adapter as a - client, in which case we send it a command to tell us what it - knows about the device. This is the "indirect" method. - - Method #2: We retrieve the eeprom contents ourselves and call into - tveeprom_hauppauge_analog() to parse the data and tell us what - it knows about the device. This is the "direct" method. - - Unfortunately it isn't perfectly clear which method is the best. - They each have pros and cons: - - #1 is simpler & more portable and has an API which is more stable. - - #1 doesn't provide as much information as #2 does. For example, we - can't retrieve the device's serial number with method #1. - - #1 requires that tveeprom.ko autonomously detect the eeprom chip on - its own; we can't help it out here. Worse still, it seems that - the eeprom in some PVR USB2 devices (like mine) can't be detected - correctly (I don't see an ack on a zero length write which is - what the I2C core attempts). - - #2 uses an unstable API. Current the ivtv implementation of #2 uses - a completely different tveeprom struct than the v4l - implementation of #2. This causes a usability nightmare. - - Since I can't decide, both methods are implemented below. Method #2 - (direct) is the default choice, but if you want to try method #1, - then define PVR2_EEPROM_INDIRECT and cross your fingers... - - If you use method #1, please be aware that you won't have a serial - number for the device and thus the sysfs interface may be a little - different. In addition, if tveeprom.ko fails to detect the eeprom - you may have to force it using standard i2c module options (try - force=-1,80). FINALLY (and this may foreclose this option for you - completely), the PVR USB2 eeprom seems to have valid data only in - the upper 128 bytes - the lower 128 bytes causes tveeprom.ko to - abort. In method #2 we only read the upper 128 bytes... - - */ - - - - -/* Stuff common to direct approach of operation tveeprom */ - -/* - - Read and analyze data in the eeprom. Use tveeprom to figure out - the packet structure, since this is another Hauppauge device and - internally it has a family resemblence to ivtv-type devices - -*/ - -#define PVR_EEPROM_I2C_ADDR 0x50 - -#include <media/tveeprom.h> - -/* We seem to only be interested in the back half of the EEPROM */ -#define EEPROM_SIZE 128 -#define EEPROM_OFFS 128 - -/* Grab EEPROM contents, needed for direct method. */ -static u8 *pvr2_eeprom_fetch(struct pvr2_hdw *hdw) -{ - struct i2c_msg msg[2]; - u8 *eeprom; - u8 offs; - int ret; - unsigned pcnt,tcnt; - eeprom = kmalloc(EEPROM_SIZE,GFP_KERNEL); - if (!eeprom) { - pvr2_trace(PVR2_TRACE_ERROR_LEGS, - "Failed to allocate memory" - " required to read eeprom"); - return 0; - } - - msg[0].addr = PVR_EEPROM_I2C_ADDR; - msg[0].flags = 0; - msg[0].len = 1; - msg[0].buf = &offs; - msg[1].addr = PVR_EEPROM_I2C_ADDR; - msg[1].flags = I2C_M_RD; - - /* We have to do the actual eeprom data fetch ourselves, because - (1) we're only fetching part of the eeprom, and (2) if we were - getting the whole thing our I2C driver can't grab it in one - pass - which is what tveeprom is otherwise going to attempt */ - memset(eeprom,0,EEPROM_SIZE); - for (tcnt = 0; tcnt < EEPROM_SIZE; tcnt += pcnt) { - pcnt = 16; - if (pcnt + tcnt > EEPROM_SIZE) pcnt = EEPROM_SIZE-tcnt; - offs = tcnt + EEPROM_OFFS; - msg[1].len = pcnt; - msg[1].buf = eeprom+tcnt; - if ((ret = i2c_transfer( - &hdw->i2c_adap, - msg,sizeof(msg)/sizeof(msg[0]))) != 2) { - pvr2_trace(PVR2_TRACE_ERROR_LEGS, - "eeprom fetch set offs err=%d",ret); - kfree(eeprom); - return 0; - } - } - return eeprom; -} - - -/*VVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVV*/ -/* BEGIN DIRECT METHOD, V4L ONLY */ - - -/* Directly call eeprom analysis function within tveeprom. This - version directly assumes it is talking to the V4L version of - tveeprom.ko and does not attempt anything ugly to maintain - backwards compatibility. */ - -int pvr2_eeprom_analyze(struct pvr2_hdw *hdw) -{ - u8 *eeprom; - struct tveeprom tvdata; - - memset(&tvdata,0,sizeof(tvdata)); - - eeprom = pvr2_eeprom_fetch(hdw); - if (!eeprom) return -EINVAL; - - { - struct i2c_client fake_client; - /* Newer version expects a useless client interface */ - fake_client.addr = PVR_EEPROM_I2C_ADDR; - fake_client.adapter = &hdw->i2c_adap; - tveeprom_hauppauge_analog(&fake_client,&tvdata,eeprom); - } - - trace_eeprom("eeprom assumed v4l tveeprom module"); - trace_eeprom("eeprom direct call results:"); - trace_eeprom("has_radio=%d",tvdata.has_radio); - trace_eeprom("tuner_type=%d",tvdata.tuner_type); - trace_eeprom("tuner_formats=0x%x",tvdata.tuner_formats); - trace_eeprom("audio_processor=%d",tvdata.audio_processor); - trace_eeprom("model=%d",tvdata.model); - trace_eeprom("revision=%d",tvdata.revision); - trace_eeprom("serial_number=%d",tvdata.serial_number); - trace_eeprom("rev_str=%s",tvdata.rev_str); - hdw->tuner_type = tvdata.tuner_type; - hdw->serial_number = tvdata.serial_number; - hdw->video_standards = tvdata.tuner_formats; - - kfree(eeprom); - - return 0; -} - - - -/* END DIRECT METHOD, V4L ONLY */ -/*^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^*/ - - - - - - - -static v4l2_std_id std_choices[] = { - [PVR2_CVAL_VIDEOSTANDARD_NTSC_M] = V4L2_STD_NTSC_M, - [PVR2_CVAL_VIDEOSTANDARD_PAL_BG] = V4L2_STD_PAL_BG, - [PVR2_CVAL_VIDEOSTANDARD_PAL_I] = V4L2_STD_PAL_I, - [PVR2_CVAL_VIDEOSTANDARD_PAL_DK] = V4L2_STD_PAL_DK, - [PVR2_CVAL_VIDEOSTANDARD_SECAM_L] = V4L2_STD_SECAM_L, - [PVR2_CVAL_VIDEOSTANDARD_PAL_M] = V4L2_STD_PAL_M, -}; - -void pvr2_eeprom_set_default_standard(struct pvr2_hdw *hdw) -{ - int vstd_value = 0; - int vstd_found = 0; - unsigned int idx; - v4l2_std_id vs = (v4l2_std_id)hdw->video_standards; - - for (idx = 0; idx < sizeof(std_choices)/sizeof(std_choices[0]); - idx++) { - if (!(vs & std_choices[idx])) continue; - trace_eeprom("Detected video standard %s (from eeprom)", - pvr2_hdw_get_ctl_value_name( - hdw,PVR2_CID_VIDEOSTANDARD,idx)); - if (vstd_found) continue; - vstd_value = idx; - vstd_found = !0; - } - - if (!vstd_found) { - trace_eeprom("eeprom unable to recognize" - " a known video standard"); - return; - } - - trace_eeprom("Setting initial video standard to %s" - " (detected from eeprom)", - pvr2_hdw_get_ctl_value_name(hdw, - PVR2_CID_VIDEOSTANDARD, - vstd_value)); - pvr2_hdw_set_ctl_value_internal(hdw,PVR2_CID_VIDEOSTANDARD,vstd_value); -} - - -/* - 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: *** - */ |