2007-07-26 00:42:54 +07:00
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/*
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* Driver for Microtune MT2266 "Direct conversion low power broadband tuner"
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*
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* Copyright (c) 2007 Olivier DANET <odanet@caramail.com>
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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, or
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* (at your option) any later version.
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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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#include <linux/module.h>
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#include <linux/delay.h>
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#include <linux/dvb/frontend.h>
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#include <linux/i2c.h>
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include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
percpu.h is included by sched.h and module.h and thus ends up being
included when building most .c files. percpu.h includes slab.h which
in turn includes gfp.h making everything defined by the two files
universally available and complicating inclusion dependencies.
percpu.h -> slab.h dependency is about to be removed. Prepare for
this change by updating users of gfp and slab facilities include those
headers directly instead of assuming availability. As this conversion
needs to touch large number of source files, the following script is
used as the basis of conversion.
http://userweb.kernel.org/~tj/misc/slabh-sweep.py
The script does the followings.
* Scan files for gfp and slab usages and update includes such that
only the necessary includes are there. ie. if only gfp is used,
gfp.h, if slab is used, slab.h.
* When the script inserts a new include, it looks at the include
blocks and try to put the new include such that its order conforms
to its surrounding. It's put in the include block which contains
core kernel includes, in the same order that the rest are ordered -
alphabetical, Christmas tree, rev-Xmas-tree or at the end if there
doesn't seem to be any matching order.
* If the script can't find a place to put a new include (mostly
because the file doesn't have fitting include block), it prints out
an error message indicating which .h file needs to be added to the
file.
The conversion was done in the following steps.
1. The initial automatic conversion of all .c files updated slightly
over 4000 files, deleting around 700 includes and adding ~480 gfp.h
and ~3000 slab.h inclusions. The script emitted errors for ~400
files.
2. Each error was manually checked. Some didn't need the inclusion,
some needed manual addition while adding it to implementation .h or
embedding .c file was more appropriate for others. This step added
inclusions to around 150 files.
3. The script was run again and the output was compared to the edits
from #2 to make sure no file was left behind.
4. Several build tests were done and a couple of problems were fixed.
e.g. lib/decompress_*.c used malloc/free() wrappers around slab
APIs requiring slab.h to be added manually.
5. The script was run on all .h files but without automatically
editing them as sprinkling gfp.h and slab.h inclusions around .h
files could easily lead to inclusion dependency hell. Most gfp.h
inclusion directives were ignored as stuff from gfp.h was usually
wildly available and often used in preprocessor macros. Each
slab.h inclusion directive was examined and added manually as
necessary.
6. percpu.h was updated not to include slab.h.
7. Build test were done on the following configurations and failures
were fixed. CONFIG_GCOV_KERNEL was turned off for all tests (as my
distributed build env didn't work with gcov compiles) and a few
more options had to be turned off depending on archs to make things
build (like ipr on powerpc/64 which failed due to missing writeq).
* x86 and x86_64 UP and SMP allmodconfig and a custom test config.
* powerpc and powerpc64 SMP allmodconfig
* sparc and sparc64 SMP allmodconfig
* ia64 SMP allmodconfig
* s390 SMP allmodconfig
* alpha SMP allmodconfig
* um on x86_64 SMP allmodconfig
8. percpu.h modifications were reverted so that it could be applied as
a separate patch and serve as bisection point.
Given the fact that I had only a couple of failures from tests on step
6, I'm fairly confident about the coverage of this conversion patch.
If there is a breakage, it's likely to be something in one of the arch
headers which should be easily discoverable easily on most builds of
the specific arch.
Signed-off-by: Tejun Heo <tj@kernel.org>
Guess-its-ok-by: Christoph Lameter <cl@linux-foundation.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
2010-03-24 15:04:11 +07:00
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#include <linux/slab.h>
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2007-07-26 00:42:54 +07:00
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#include "dvb_frontend.h"
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#include "mt2266.h"
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#define I2C_ADDRESS 0x60
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#define REG_PART_REV 0
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#define REG_TUNE 1
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#define REG_BAND 6
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#define REG_BANDWIDTH 8
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#define REG_LOCK 0x12
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#define PART_REV 0x85
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struct mt2266_priv {
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struct mt2266_config *cfg;
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struct i2c_adapter *i2c;
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u32 frequency;
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u32 bandwidth;
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2007-11-12 20:48:51 +07:00
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u8 band;
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2007-07-26 00:42:54 +07:00
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};
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2007-11-12 20:48:51 +07:00
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#define MT2266_VHF 1
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#define MT2266_UHF 0
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2007-07-26 00:42:54 +07:00
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/* Here, frequencies are expressed in kiloHertz to avoid 32 bits overflows */
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static int debug;
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module_param(debug, int, 0644);
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MODULE_PARM_DESC(debug, "Turn on/off debugging (default:off).");
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#define dprintk(args...) do { if (debug) {printk(KERN_DEBUG "MT2266: " args); printk("\n"); }} while (0)
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// Reads a single register
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static int mt2266_readreg(struct mt2266_priv *priv, u8 reg, u8 *val)
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{
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struct i2c_msg msg[2] = {
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{ .addr = priv->cfg->i2c_address, .flags = 0, .buf = ®, .len = 1 },
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{ .addr = priv->cfg->i2c_address, .flags = I2C_M_RD, .buf = val, .len = 1 },
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};
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if (i2c_transfer(priv->i2c, msg, 2) != 2) {
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printk(KERN_WARNING "MT2266 I2C read failed\n");
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return -EREMOTEIO;
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}
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return 0;
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}
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// Writes a single register
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static int mt2266_writereg(struct mt2266_priv *priv, u8 reg, u8 val)
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{
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u8 buf[2] = { reg, val };
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struct i2c_msg msg = {
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.addr = priv->cfg->i2c_address, .flags = 0, .buf = buf, .len = 2
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};
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if (i2c_transfer(priv->i2c, &msg, 1) != 1) {
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printk(KERN_WARNING "MT2266 I2C write failed\n");
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return -EREMOTEIO;
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}
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return 0;
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}
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// Writes a set of consecutive registers
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static int mt2266_writeregs(struct mt2266_priv *priv,u8 *buf, u8 len)
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{
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struct i2c_msg msg = {
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.addr = priv->cfg->i2c_address, .flags = 0, .buf = buf, .len = len
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};
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if (i2c_transfer(priv->i2c, &msg, 1) != 1) {
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printk(KERN_WARNING "MT2266 I2C write failed (len=%i)\n",(int)len);
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return -EREMOTEIO;
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}
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return 0;
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}
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// Initialisation sequences
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2007-11-12 20:48:51 +07:00
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static u8 mt2266_init1[] = { REG_TUNE, 0x00, 0x00, 0x28,
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0x00, 0x52, 0x99, 0x3f };
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2007-07-26 00:42:54 +07:00
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static u8 mt2266_init2[] = {
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2007-11-12 20:48:51 +07:00
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0x17, 0x6d, 0x71, 0x61, 0xc0, 0xbf, 0xff, 0xdc, 0x00, 0x0a, 0xd4,
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0x03, 0x64, 0x64, 0x64, 0x64, 0x22, 0xaa, 0xf2, 0x1e, 0x80, 0x14,
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0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x7f, 0x5e, 0x3f, 0xff, 0xff,
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0xff, 0x00, 0x77, 0x0f, 0x2d
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};
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static u8 mt2266_init_8mhz[] = { REG_BANDWIDTH, 0x22, 0x22, 0x22, 0x22,
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0x22, 0x22, 0x22, 0x22 };
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2007-07-26 00:42:54 +07:00
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2007-11-12 20:48:51 +07:00
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static u8 mt2266_init_7mhz[] = { REG_BANDWIDTH, 0x32, 0x32, 0x32, 0x32,
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0x32, 0x32, 0x32, 0x32 };
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2007-07-26 00:42:54 +07:00
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2007-11-12 20:48:51 +07:00
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static u8 mt2266_init_6mhz[] = { REG_BANDWIDTH, 0xa7, 0xa7, 0xa7, 0xa7,
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0xa7, 0xa7, 0xa7, 0xa7 };
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2007-07-26 00:42:54 +07:00
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2007-11-12 20:48:51 +07:00
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static u8 mt2266_uhf[] = { 0x1d, 0xdc, 0x00, 0x0a, 0xd4, 0x03, 0x64, 0x64,
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0x64, 0x64, 0x22, 0xaa, 0xf2, 0x1e, 0x80, 0x14 };
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static u8 mt2266_vhf[] = { 0x1d, 0xfe, 0x00, 0x00, 0xb4, 0x03, 0xa5, 0xa5,
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0xa5, 0xa5, 0x82, 0xaa, 0xf1, 0x17, 0x80, 0x1f };
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2007-07-26 00:42:54 +07:00
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#define FREF 30000 // Quartz oscillator 30 MHz
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2011-12-24 22:24:33 +07:00
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static int mt2266_set_params(struct dvb_frontend *fe)
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2007-07-26 00:42:54 +07:00
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{
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2011-12-21 07:49:12 +07:00
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struct dtv_frontend_properties *c = &fe->dtv_property_cache;
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2007-07-26 00:42:54 +07:00
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struct mt2266_priv *priv;
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int ret=0;
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u32 freq;
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u32 tune;
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u8 lnaband;
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u8 b[10];
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int i;
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2007-11-12 20:48:51 +07:00
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u8 band;
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2007-07-26 00:42:54 +07:00
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priv = fe->tuner_priv;
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2011-12-21 07:49:12 +07:00
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freq = priv->frequency / 1000; /* Hz -> kHz */
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2007-11-12 20:48:51 +07:00
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if (freq < 470000 && freq > 230000)
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return -EINVAL; /* Gap between VHF and UHF bands */
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2011-12-21 07:49:12 +07:00
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priv->frequency = c->frequency;
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2007-11-12 20:48:51 +07:00
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tune = 2 * freq * (8192/16) / (FREF/16);
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band = (freq < 300000) ? MT2266_VHF : MT2266_UHF;
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if (band == MT2266_VHF)
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tune *= 2;
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2011-12-21 07:49:12 +07:00
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switch (c->bandwidth_hz) {
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case 6000000:
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2007-11-12 20:48:51 +07:00
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mt2266_writeregs(priv, mt2266_init_6mhz,
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sizeof(mt2266_init_6mhz));
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break;
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2011-12-21 07:49:12 +07:00
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case 8000000:
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2007-11-12 20:48:51 +07:00
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mt2266_writeregs(priv, mt2266_init_8mhz,
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sizeof(mt2266_init_8mhz));
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2011-12-21 07:49:12 +07:00
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break;
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case 7000000:
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default:
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mt2266_writeregs(priv, mt2266_init_7mhz,
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sizeof(mt2266_init_7mhz));
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2007-11-12 20:48:51 +07:00
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break;
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}
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2011-12-27 06:02:28 +07:00
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priv->bandwidth = c->bandwidth_hz;
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2007-11-12 20:48:51 +07:00
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if (band == MT2266_VHF && priv->band == MT2266_UHF) {
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dprintk("Switch from UHF to VHF");
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mt2266_writereg(priv, 0x05, 0x04);
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mt2266_writereg(priv, 0x19, 0x61);
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mt2266_writeregs(priv, mt2266_vhf, sizeof(mt2266_vhf));
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} else if (band == MT2266_UHF && priv->band == MT2266_VHF) {
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dprintk("Switch from VHF to UHF");
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mt2266_writereg(priv, 0x05, 0x52);
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mt2266_writereg(priv, 0x19, 0x61);
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mt2266_writeregs(priv, mt2266_uhf, sizeof(mt2266_uhf));
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}
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msleep(10);
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if (freq <= 495000)
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lnaband = 0xEE;
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else if (freq <= 525000)
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lnaband = 0xDD;
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else if (freq <= 550000)
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lnaband = 0xCC;
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else if (freq <= 580000)
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lnaband = 0xBB;
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else if (freq <= 605000)
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lnaband = 0xAA;
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else if (freq <= 630000)
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lnaband = 0x99;
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else if (freq <= 655000)
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lnaband = 0x88;
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else if (freq <= 685000)
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lnaband = 0x77;
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else if (freq <= 710000)
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lnaband = 0x66;
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else if (freq <= 735000)
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lnaband = 0x55;
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else if (freq <= 765000)
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lnaband = 0x44;
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else if (freq <= 802000)
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lnaband = 0x33;
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else if (freq <= 840000)
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lnaband = 0x22;
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else
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lnaband = 0x11;
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2007-07-26 00:42:54 +07:00
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b[0] = REG_TUNE;
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b[1] = (tune >> 8) & 0x1F;
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b[2] = tune & 0xFF;
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b[3] = tune >> 13;
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mt2266_writeregs(priv,b,4);
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2007-11-12 20:48:51 +07:00
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dprintk("set_parms: tune=%d band=%d %s",
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(int) tune, (int) lnaband,
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(band == MT2266_UHF) ? "UHF" : "VHF");
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dprintk("set_parms: [1..3]: %2x %2x %2x",
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(int) b[1], (int) b[2], (int)b[3]);
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if (band == MT2266_UHF) {
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b[0] = 0x05;
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b[1] = (priv->band == MT2266_VHF) ? 0x52 : 0x62;
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b[2] = lnaband;
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mt2266_writeregs(priv, b, 3);
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}
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2007-07-26 00:42:54 +07:00
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2007-11-12 20:48:51 +07:00
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/* Wait for pll lock or timeout */
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2007-07-26 00:42:54 +07:00
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i = 0;
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do {
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mt2266_readreg(priv,REG_LOCK,b);
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2007-11-12 20:48:51 +07:00
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if (b[0] & 0x40)
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2007-07-26 00:42:54 +07:00
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break;
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msleep(10);
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i++;
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} while (i<10);
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2007-07-27 20:08:51 +07:00
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dprintk("Lock when i=%i",(int)i);
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2007-11-12 20:48:51 +07:00
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if (band == MT2266_UHF && priv->band == MT2266_VHF)
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mt2266_writereg(priv, 0x05, 0x62);
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priv->band = band;
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2007-07-26 00:42:54 +07:00
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return ret;
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}
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static void mt2266_calibrate(struct mt2266_priv *priv)
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{
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2007-11-12 20:48:51 +07:00
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mt2266_writereg(priv, 0x11, 0x03);
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mt2266_writereg(priv, 0x11, 0x01);
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mt2266_writeregs(priv, mt2266_init1, sizeof(mt2266_init1));
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mt2266_writeregs(priv, mt2266_init2, sizeof(mt2266_init2));
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mt2266_writereg(priv, 0x33, 0x5e);
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mt2266_writereg(priv, 0x10, 0x10);
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mt2266_writereg(priv, 0x10, 0x00);
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mt2266_writeregs(priv, mt2266_init_8mhz, sizeof(mt2266_init_8mhz));
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2007-07-26 00:42:54 +07:00
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msleep(25);
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2007-11-12 20:48:51 +07:00
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mt2266_writereg(priv, 0x17, 0x6d);
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mt2266_writereg(priv, 0x1c, 0x00);
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2007-07-26 00:42:54 +07:00
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msleep(75);
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2007-11-12 20:48:51 +07:00
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|
|
mt2266_writereg(priv, 0x17, 0x6d);
|
|
|
|
mt2266_writereg(priv, 0x1c, 0xff);
|
2007-07-26 00:42:54 +07:00
|
|
|
}
|
|
|
|
|
|
|
|
static int mt2266_get_frequency(struct dvb_frontend *fe, u32 *frequency)
|
|
|
|
{
|
|
|
|
struct mt2266_priv *priv = fe->tuner_priv;
|
|
|
|
*frequency = priv->frequency;
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int mt2266_get_bandwidth(struct dvb_frontend *fe, u32 *bandwidth)
|
|
|
|
{
|
|
|
|
struct mt2266_priv *priv = fe->tuner_priv;
|
|
|
|
*bandwidth = priv->bandwidth;
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int mt2266_init(struct dvb_frontend *fe)
|
|
|
|
{
|
2007-11-12 20:48:51 +07:00
|
|
|
int ret;
|
2007-07-26 00:42:54 +07:00
|
|
|
struct mt2266_priv *priv = fe->tuner_priv;
|
2007-11-12 20:48:51 +07:00
|
|
|
ret = mt2266_writereg(priv, 0x17, 0x6d);
|
|
|
|
if (ret < 0)
|
|
|
|
return ret;
|
|
|
|
ret = mt2266_writereg(priv, 0x1c, 0xff);
|
|
|
|
if (ret < 0)
|
|
|
|
return ret;
|
2007-07-26 00:42:54 +07:00
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int mt2266_sleep(struct dvb_frontend *fe)
|
|
|
|
{
|
|
|
|
struct mt2266_priv *priv = fe->tuner_priv;
|
2007-11-12 20:48:51 +07:00
|
|
|
mt2266_writereg(priv, 0x17, 0x6d);
|
|
|
|
mt2266_writereg(priv, 0x1c, 0x00);
|
2007-07-26 00:42:54 +07:00
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int mt2266_release(struct dvb_frontend *fe)
|
|
|
|
{
|
|
|
|
kfree(fe->tuner_priv);
|
|
|
|
fe->tuner_priv = NULL;
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static const struct dvb_tuner_ops mt2266_tuner_ops = {
|
|
|
|
.info = {
|
|
|
|
.name = "Microtune MT2266",
|
2007-11-12 20:48:51 +07:00
|
|
|
.frequency_min = 174000000,
|
|
|
|
.frequency_max = 862000000,
|
2007-07-26 00:42:54 +07:00
|
|
|
.frequency_step = 50000,
|
|
|
|
},
|
|
|
|
.release = mt2266_release,
|
|
|
|
.init = mt2266_init,
|
|
|
|
.sleep = mt2266_sleep,
|
|
|
|
.set_params = mt2266_set_params,
|
|
|
|
.get_frequency = mt2266_get_frequency,
|
|
|
|
.get_bandwidth = mt2266_get_bandwidth
|
|
|
|
};
|
|
|
|
|
|
|
|
struct dvb_frontend * mt2266_attach(struct dvb_frontend *fe, struct i2c_adapter *i2c, struct mt2266_config *cfg)
|
|
|
|
{
|
|
|
|
struct mt2266_priv *priv = NULL;
|
|
|
|
u8 id = 0;
|
|
|
|
|
|
|
|
priv = kzalloc(sizeof(struct mt2266_priv), GFP_KERNEL);
|
|
|
|
if (priv == NULL)
|
|
|
|
return NULL;
|
|
|
|
|
|
|
|
priv->cfg = cfg;
|
|
|
|
priv->i2c = i2c;
|
2007-11-12 20:48:51 +07:00
|
|
|
priv->band = MT2266_UHF;
|
2007-07-26 00:42:54 +07:00
|
|
|
|
2007-11-12 20:48:51 +07:00
|
|
|
if (mt2266_readreg(priv, 0, &id)) {
|
2007-07-26 00:42:54 +07:00
|
|
|
kfree(priv);
|
|
|
|
return NULL;
|
|
|
|
}
|
|
|
|
if (id != PART_REV) {
|
|
|
|
kfree(priv);
|
|
|
|
return NULL;
|
|
|
|
}
|
|
|
|
printk(KERN_INFO "MT2266: successfully identified\n");
|
|
|
|
memcpy(&fe->ops.tuner_ops, &mt2266_tuner_ops, sizeof(struct dvb_tuner_ops));
|
|
|
|
|
|
|
|
fe->tuner_priv = priv;
|
|
|
|
mt2266_calibrate(priv);
|
|
|
|
return fe;
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL(mt2266_attach);
|
|
|
|
|
|
|
|
MODULE_AUTHOR("Olivier DANET");
|
|
|
|
MODULE_DESCRIPTION("Microtune MT2266 silicon tuner driver");
|
|
|
|
MODULE_LICENSE("GPL");
|