Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261993AbVCHLDw (ORCPT ); Tue, 8 Mar 2005 06:03:52 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261987AbVCHLCs (ORCPT ); Tue, 8 Mar 2005 06:02:48 -0500 Received: from hirsch.in-berlin.de ([192.109.42.6]:26859 "EHLO hirsch.in-berlin.de") by vger.kernel.org with ESMTP id S261971AbVCHLAS (ORCPT ); Tue, 8 Mar 2005 06:00:18 -0500 X-Envelope-From: kraxel@bytesex.org Date: Tue, 8 Mar 2005 11:57:26 +0100 From: Gerd Knorr To: Andrew Morton , Linux Kernel Mailing List , dvb list Subject: [patch] dvb: add pll lib Message-ID: <20050308105726.GA30986@bytesex> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.5.6i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 7829 Lines: 253 Hi, This adds some helper code to handle tuning for dvb cards, with a struct describing the pll and a function calculating the command sequence needed to program it. This one was discussed + accepted on the linuxtv list and also is in the linuxtv cvs. As the the cx88 driver update I want finally get out of the door depends on this one I'll go submit it myself instead of waiting for the dvb guys doing it. Gerd Signed-off-by: Gerd Knorr --- drivers/media/dvb/frontends/Makefile | 1 drivers/media/dvb/frontends/dvb-pll.c | 168 ++++++++++++++++++++++++++ drivers/media/dvb/frontends/dvb-pll.h | 34 +++++ 3 files changed, 203 insertions(+) Index: linux-2.6.11-rc4/drivers/media/dvb/frontends/Makefile =================================================================== --- linux-2.6.11-rc4.orig/drivers/media/dvb/frontends/Makefile 2005-02-14 15:21:59.000000000 +0100 +++ linux-2.6.11-rc4/drivers/media/dvb/frontends/Makefile 2005-02-15 12:31:40.000000000 +0100 @@ -4,6 +4,7 @@ EXTRA_CFLAGS = -Idrivers/media/dvb/dvb-core/ +obj-$(CONFIG_DVB_CORE) += dvb-pll.o obj-$(CONFIG_DVB_STV0299) += stv0299.o obj-$(CONFIG_DVB_SP8870) += sp8870.o obj-$(CONFIG_DVB_CX22700) += cx22700.o Index: linux-2.6.11-rc4/drivers/media/dvb/frontends/dvb-pll.c =================================================================== --- /dev/null 1970-01-01 00:00:00.000000000 +0000 +++ linux-2.6.11-rc4/drivers/media/dvb/frontends/dvb-pll.c 2005-02-15 12:31:51.000000000 +0100 @@ -0,0 +1,168 @@ +/* + * $Id: dvb-pll.c,v 1.7 2005/02/10 11:52:02 kraxel Exp $ + * + * descriptions + helper functions for simple dvb plls. + * + * (c) 2004 Gerd Knorr [SuSE Labs] + * + * 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, or + * (at your option) any later version. + * + * 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., 675 Mass Ave, Cambridge, MA 02139, USA. + */ + +#include +#include +#include + +#include "dvb-pll.h" + +/* ----------------------------------------------------------- */ +/* descriptions */ + +struct dvb_pll_desc dvb_pll_thomson_dtt7579 = { + .name = "Thomson dtt7579", + .min = 177000000, + .max = 858000000, + .count = 5, + .entries = { + { 0, 36166667, 166666, 0xb4, 0x03 }, /* go sleep */ + { 443250000, 36166667, 166666, 0xb4, 0x02 }, + { 542000000, 36166667, 166666, 0xb4, 0x08 }, + { 771000000, 36166667, 166666, 0xbc, 0x08 }, + { 999999999, 36166667, 166666, 0xf4, 0x08 }, + }, +}; +EXPORT_SYMBOL(dvb_pll_thomson_dtt7579); + +struct dvb_pll_desc dvb_pll_thomson_dtt7610 = { + .name = "Thomson dtt7610", + .min = 44000000, + .max = 958000000, + .count = 3, + .entries = { + { 157250000, 44000000, 62500, 0x8e, 0x39 }, + { 454000000, 44000000, 62500, 0x8e, 0x3a }, + { 999999999, 44000000, 62500, 0x8e, 0x3c }, + }, +}; +EXPORT_SYMBOL(dvb_pll_thomson_dtt7610); + +static void thomson_dtt759x_bw(u8 *buf, int bandwidth) +{ + if (BANDWIDTH_7_MHZ == bandwidth) + buf[3] |= 0x10; +} + +struct dvb_pll_desc dvb_pll_thomson_dtt759x = { + .name = "Thomson dtt759x", + .min = 177000000, + .max = 896000000, + .setbw = thomson_dtt759x_bw, + .count = 6, + .entries = { + { 0, 36166667, 166666, 0x84, 0x03 }, + { 264000000, 36166667, 166666, 0xb4, 0x02 }, + { 470000000, 36166667, 166666, 0xbc, 0x02 }, + { 735000000, 36166667, 166666, 0xbc, 0x08 }, + { 835000000, 36166667, 166666, 0xf4, 0x08 }, + { 999999999, 36166667, 166666, 0xfc, 0x08 }, + }, +}; +EXPORT_SYMBOL(dvb_pll_thomson_dtt759x); + +struct dvb_pll_desc dvb_pll_lg_z201 = { + .name = "LG z201", + .min = 174000000, + .max = 862000000, + .count = 5, + .entries = { + { 0, 36166667, 166666, 0xbc, 0x03 }, + { 443250000, 36166667, 166666, 0xbc, 0x01 }, + { 542000000, 36166667, 166666, 0xbc, 0x02 }, + { 830000000, 36166667, 166666, 0xf4, 0x02 }, + { 999999999, 36166667, 166666, 0xfc, 0x02 }, + }, +}; +EXPORT_SYMBOL(dvb_pll_lg_z201); + +struct dvb_pll_desc dvb_pll_unknown_1 = { + .name = "unknown 1", /* used by dntv live dvb-t */ + .min = 174000000, + .max = 862000000, + .count = 9, + .entries = { + { 150000000, 36166667, 166666, 0xb4, 0x01 }, + { 173000000, 36166667, 166666, 0xbc, 0x01 }, + { 250000000, 36166667, 166666, 0xb4, 0x02 }, + { 400000000, 36166667, 166666, 0xbc, 0x02 }, + { 420000000, 36166667, 166666, 0xf4, 0x02 }, + { 470000000, 36166667, 166666, 0xfc, 0x02 }, + { 600000000, 36166667, 166666, 0xbc, 0x08 }, + { 730000000, 36166667, 166666, 0xf4, 0x08 }, + { 999999999, 36166667, 166666, 0xfc, 0x08 }, + }, +}; +EXPORT_SYMBOL(dvb_pll_unknown_1); + +/* ----------------------------------------------------------- */ +/* code */ + +static int debug = 0; +module_param(debug, int, 0644); +MODULE_PARM_DESC(debug, "enable verbose debug messages"); + +int dvb_pll_configure(struct dvb_pll_desc *desc, u8 *buf, + u32 freq, int bandwidth) +{ + u32 div; + int i; + + if (freq != 0 && (freq < desc->min || freq > desc->max)) + return -EINVAL; + + for (i = 0; i < desc->count; i++) { + if (freq > desc->entries[i].limit) + continue; + break; + } + if (debug) + printk("pll: %s: freq=%d bw=%d | i=%d/%d\n", + desc->name, freq, bandwidth, i, desc->count); + BUG_ON(i == desc->count); + + div = (freq + desc->entries[i].offset) / desc->entries[i].stepsize; + buf[0] = div >> 8; + buf[1] = div & 0xff; + buf[2] = desc->entries[i].cb1; + buf[3] = desc->entries[i].cb2; + + if (desc->setbw) + desc->setbw(buf, bandwidth); + + if (debug) + printk("pll: %s: div=%d | buf=0x%02x,0x%02x,0x%02x,0x%02x\n", + desc->name, div, buf[0], buf[1], buf[2], buf[3]); + + return 0; +} +EXPORT_SYMBOL(dvb_pll_configure); + +MODULE_DESCRIPTION("dvb pll library"); +MODULE_AUTHOR("Gerd Knorr"); +MODULE_LICENSE("GPL"); + +/* + * Local variables: + * c-basic-offset: 8 + * End: + */ Index: linux-2.6.11-rc4/drivers/media/dvb/frontends/dvb-pll.h =================================================================== --- /dev/null 1970-01-01 00:00:00.000000000 +0000 +++ linux-2.6.11-rc4/drivers/media/dvb/frontends/dvb-pll.h 2005-02-15 12:31:51.000000000 +0100 @@ -0,0 +1,34 @@ +/* + * $Id: dvb-pll.h,v 1.2 2005/02/10 11:43:41 kraxel Exp $ + */ + +struct dvb_pll_desc { + char *name; + u32 min; + u32 max; + void (*setbw)(u8 *buf, int bandwidth); + int count; + struct { + u32 limit; + u32 offset; + u32 stepsize; + u8 cb1; + u8 cb2; + } entries[]; +}; + +extern struct dvb_pll_desc dvb_pll_thomson_dtt7579; +extern struct dvb_pll_desc dvb_pll_thomson_dtt759x; +extern struct dvb_pll_desc dvb_pll_thomson_dtt7610; +extern struct dvb_pll_desc dvb_pll_lg_z201; +extern struct dvb_pll_desc dvb_pll_unknown_1; + +int dvb_pll_configure(struct dvb_pll_desc *desc, u8 *buf, + u32 freq, int bandwidth); + +/* + * Local variables: + * c-basic-offset: 8 + * compile-command: "make DVB=1" + * End: + */ -- #define printk(args...) fprintf(stderr, ## args) - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/