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android_kernel_motorola_sm6225/drivers/media/dvb/frontends/stv6110x.c
Tejun Heo 5a0e3ad6af 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>
2010-03-30 22:02:32 +09:00

428 lines
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/*
STV6110(A) Silicon tuner driver
Copyright (C) Manu Abraham <abraham.manu@gmail.com>
Copyright (C) ST Microelectronics
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 <linux/init.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/slab.h>
#include <linux/string.h>
#include "dvb_frontend.h"
#include "stv6110x_reg.h"
#include "stv6110x.h"
#include "stv6110x_priv.h"
static unsigned int verbose;
module_param(verbose, int, 0644);
MODULE_PARM_DESC(verbose, "Set Verbosity level");
static int stv6110x_read_reg(struct stv6110x_state *stv6110x, u8 reg, u8 *data)
{
int ret;
const struct stv6110x_config *config = stv6110x->config;
u8 b0[] = { reg };
u8 b1[] = { 0 };
struct i2c_msg msg[] = {
{ .addr = config->addr, .flags = 0, .buf = b0, .len = 1 },
{ .addr = config->addr, .flags = I2C_M_RD, .buf = b1, .len = 1 }
};
ret = i2c_transfer(stv6110x->i2c, msg, 2);
if (ret != 2) {
dprintk(FE_ERROR, 1, "I/O Error");
return -EREMOTEIO;
}
*data = b1[0];
return 0;
}
static int stv6110x_write_regs(struct stv6110x_state *stv6110x, int start, u8 data[], int len)
{
int ret;
const struct stv6110x_config *config = stv6110x->config;
u8 buf[len + 1];
struct i2c_msg msg = {
.addr = config->addr,
.flags = 0,
.buf = buf,
.len = len + 1
};
if (start + len > 8)
return -EINVAL;
buf[0] = start;
memcpy(&buf[1], data, len);
ret = i2c_transfer(stv6110x->i2c, &msg, 1);
if (ret != 1) {
dprintk(FE_ERROR, 1, "I/O Error");
return -EREMOTEIO;
}
return 0;
}
static int stv6110x_write_reg(struct stv6110x_state *stv6110x, u8 reg, u8 data)
{
return stv6110x_write_regs(stv6110x, reg, &data, 1);
}
static int stv6110x_init(struct dvb_frontend *fe)
{
struct stv6110x_state *stv6110x = fe->tuner_priv;
int ret;
ret = stv6110x_write_regs(stv6110x, 0, stv6110x->regs,
ARRAY_SIZE(stv6110x->regs));
if (ret < 0) {
dprintk(FE_ERROR, 1, "Initialization failed");
return -1;
}
return 0;
}
static int stv6110x_set_frequency(struct dvb_frontend *fe, u32 frequency)
{
struct stv6110x_state *stv6110x = fe->tuner_priv;
u32 rDiv, divider;
s32 pVal, pCalc, rDivOpt = 0, pCalcOpt = 1000;
u8 i;
STV6110x_SETFIELD(stv6110x->regs[STV6110x_CTRL1], CTRL1_K, (REFCLOCK_MHz - 16));
if (frequency <= 1023000) {
STV6110x_SETFIELD(stv6110x->regs[STV6110x_TNG1], TNG1_DIV4SEL, 1);
STV6110x_SETFIELD(stv6110x->regs[STV6110x_TNG1], TNG1_PRESC32_ON, 0);
pVal = 40;
} else if (frequency <= 1300000) {
STV6110x_SETFIELD(stv6110x->regs[STV6110x_TNG1], TNG1_DIV4SEL, 1);
STV6110x_SETFIELD(stv6110x->regs[STV6110x_TNG1], TNG1_PRESC32_ON, 1);
pVal = 40;
} else if (frequency <= 2046000) {
STV6110x_SETFIELD(stv6110x->regs[STV6110x_TNG1], TNG1_DIV4SEL, 0);
STV6110x_SETFIELD(stv6110x->regs[STV6110x_TNG1], TNG1_PRESC32_ON, 0);
pVal = 20;
} else {
STV6110x_SETFIELD(stv6110x->regs[STV6110x_TNG1], TNG1_DIV4SEL, 0);
STV6110x_SETFIELD(stv6110x->regs[STV6110x_TNG1], TNG1_PRESC32_ON, 1);
pVal = 20;
}
for (rDiv = 0; rDiv <= 3; rDiv++) {
pCalc = (REFCLOCK_kHz / 100) / R_DIV(rDiv);
if ((abs((s32)(pCalc - pVal))) < (abs((s32)(pCalcOpt - pVal))))
rDivOpt = rDiv;
pCalcOpt = (REFCLOCK_kHz / 100) / R_DIV(rDivOpt);
}
divider = (frequency * R_DIV(rDivOpt) * pVal) / REFCLOCK_kHz;
divider = (divider + 5) / 10;
STV6110x_SETFIELD(stv6110x->regs[STV6110x_TNG1], TNG1_R_DIV, rDivOpt);
STV6110x_SETFIELD(stv6110x->regs[STV6110x_TNG1], TNG1_N_DIV_11_8, MSB(divider));
STV6110x_SETFIELD(stv6110x->regs[STV6110x_TNG0], TNG0_N_DIV_7_0, LSB(divider));
/* VCO Auto calibration */
STV6110x_SETFIELD(stv6110x->regs[STV6110x_STAT1], STAT1_CALVCO_STRT, 1);
stv6110x_write_reg(stv6110x, STV6110x_CTRL1, stv6110x->regs[STV6110x_CTRL1]);
stv6110x_write_reg(stv6110x, STV6110x_TNG1, stv6110x->regs[STV6110x_TNG1]);
stv6110x_write_reg(stv6110x, STV6110x_TNG0, stv6110x->regs[STV6110x_TNG0]);
stv6110x_write_reg(stv6110x, STV6110x_STAT1, stv6110x->regs[STV6110x_STAT1]);
for (i = 0; i < TRIALS; i++) {
stv6110x_read_reg(stv6110x, STV6110x_STAT1, &stv6110x->regs[STV6110x_STAT1]);
if (!STV6110x_GETFIELD(STAT1_CALVCO_STRT, stv6110x->regs[STV6110x_STAT1]))
break;
msleep(1);
}
return 0;
}
static int stv6110x_get_frequency(struct dvb_frontend *fe, u32 *frequency)
{
struct stv6110x_state *stv6110x = fe->tuner_priv;
stv6110x_read_reg(stv6110x, STV6110x_TNG1, &stv6110x->regs[STV6110x_TNG1]);
stv6110x_read_reg(stv6110x, STV6110x_TNG0, &stv6110x->regs[STV6110x_TNG0]);
*frequency = (MAKEWORD16(STV6110x_GETFIELD(TNG1_N_DIV_11_8, stv6110x->regs[STV6110x_TNG1]),
STV6110x_GETFIELD(TNG0_N_DIV_7_0, stv6110x->regs[STV6110x_TNG0]))) * REFCLOCK_kHz;
*frequency /= (1 << (STV6110x_GETFIELD(TNG1_R_DIV, stv6110x->regs[STV6110x_TNG1]) +
STV6110x_GETFIELD(TNG1_DIV4SEL, stv6110x->regs[STV6110x_TNG1])));
*frequency >>= 2;
return 0;
}
static int stv6110x_set_bandwidth(struct dvb_frontend *fe, u32 bandwidth)
{
struct stv6110x_state *stv6110x = fe->tuner_priv;
u32 halfbw;
u8 i;
halfbw = bandwidth >> 1;
if (halfbw > 36000000)
STV6110x_SETFIELD(stv6110x->regs[STV6110x_CTRL3], CTRL3_CF, 31); /* LPF */
else if (halfbw < 5000000)
STV6110x_SETFIELD(stv6110x->regs[STV6110x_CTRL3], CTRL3_CF, 0); /* LPF */
else
STV6110x_SETFIELD(stv6110x->regs[STV6110x_CTRL3], CTRL3_CF, ((halfbw / 1000000) - 5)); /* LPF */
STV6110x_SETFIELD(stv6110x->regs[STV6110x_CTRL3], CTRL3_RCCLK_OFF, 0x0); /* cal. clk activated */
STV6110x_SETFIELD(stv6110x->regs[STV6110x_STAT1], STAT1_CALRC_STRT, 0x1); /* LPF auto cal */
stv6110x_write_reg(stv6110x, STV6110x_CTRL3, stv6110x->regs[STV6110x_CTRL3]);
stv6110x_write_reg(stv6110x, STV6110x_STAT1, stv6110x->regs[STV6110x_STAT1]);
for (i = 0; i < TRIALS; i++) {
stv6110x_read_reg(stv6110x, STV6110x_STAT1, &stv6110x->regs[STV6110x_STAT1]);
if (!STV6110x_GETFIELD(STAT1_CALRC_STRT, stv6110x->regs[STV6110x_STAT1]))
break;
msleep(1);
}
STV6110x_SETFIELD(stv6110x->regs[STV6110x_CTRL3], CTRL3_RCCLK_OFF, 0x1); /* cal. done */
stv6110x_write_reg(stv6110x, STV6110x_CTRL3, stv6110x->regs[STV6110x_CTRL3]);
return 0;
}
static int stv6110x_get_bandwidth(struct dvb_frontend *fe, u32 *bandwidth)
{
struct stv6110x_state *stv6110x = fe->tuner_priv;
stv6110x_read_reg(stv6110x, STV6110x_CTRL3, &stv6110x->regs[STV6110x_CTRL3]);
*bandwidth = (STV6110x_GETFIELD(CTRL3_CF, stv6110x->regs[STV6110x_CTRL3]) + 5) * 2000000;
return 0;
}
static int stv6110x_set_refclock(struct dvb_frontend *fe, u32 refclock)
{
struct stv6110x_state *stv6110x = fe->tuner_priv;
/* setup divider */
switch (refclock) {
default:
case 1:
STV6110x_SETFIELD(stv6110x->regs[STV6110x_CTRL2], CTRL2_CO_DIV, 0);
break;
case 2:
STV6110x_SETFIELD(stv6110x->regs[STV6110x_CTRL2], CTRL2_CO_DIV, 1);
break;
case 4:
STV6110x_SETFIELD(stv6110x->regs[STV6110x_CTRL2], CTRL2_CO_DIV, 2);
break;
case 8:
case 0:
STV6110x_SETFIELD(stv6110x->regs[STV6110x_CTRL2], CTRL2_CO_DIV, 3);
break;
}
stv6110x_write_reg(stv6110x, STV6110x_CTRL2, stv6110x->regs[STV6110x_CTRL2]);
return 0;
}
static int stv6110x_get_bbgain(struct dvb_frontend *fe, u32 *gain)
{
struct stv6110x_state *stv6110x = fe->tuner_priv;
stv6110x_read_reg(stv6110x, STV6110x_CTRL2, &stv6110x->regs[STV6110x_CTRL2]);
*gain = 2 * STV6110x_GETFIELD(CTRL2_BBGAIN, stv6110x->regs[STV6110x_CTRL2]);
return 0;
}
static int stv6110x_set_bbgain(struct dvb_frontend *fe, u32 gain)
{
struct stv6110x_state *stv6110x = fe->tuner_priv;
STV6110x_SETFIELD(stv6110x->regs[STV6110x_CTRL2], CTRL2_BBGAIN, gain / 2);
stv6110x_write_reg(stv6110x, STV6110x_CTRL2, stv6110x->regs[STV6110x_CTRL2]);
return 0;
}
static int stv6110x_set_mode(struct dvb_frontend *fe, enum tuner_mode mode)
{
struct stv6110x_state *stv6110x = fe->tuner_priv;
int ret;
switch (mode) {
case TUNER_SLEEP:
STV6110x_SETFIELD(stv6110x->regs[STV6110x_CTRL1], CTRL1_SYN, 0);
STV6110x_SETFIELD(stv6110x->regs[STV6110x_CTRL1], CTRL1_RX, 0);
STV6110x_SETFIELD(stv6110x->regs[STV6110x_CTRL1], CTRL1_LPT, 0);
break;
case TUNER_WAKE:
STV6110x_SETFIELD(stv6110x->regs[STV6110x_CTRL1], CTRL1_SYN, 1);
STV6110x_SETFIELD(stv6110x->regs[STV6110x_CTRL1], CTRL1_RX, 1);
STV6110x_SETFIELD(stv6110x->regs[STV6110x_CTRL1], CTRL1_LPT, 1);
break;
}
ret = stv6110x_write_reg(stv6110x, STV6110x_CTRL1, stv6110x->regs[STV6110x_CTRL1]);
if (ret < 0) {
dprintk(FE_ERROR, 1, "I/O Error");
return -EIO;
}
return 0;
}
static int stv6110x_sleep(struct dvb_frontend *fe)
{
return stv6110x_set_mode(fe, TUNER_SLEEP);
}
static int stv6110x_get_status(struct dvb_frontend *fe, u32 *status)
{
struct stv6110x_state *stv6110x = fe->tuner_priv;
stv6110x_read_reg(stv6110x, STV6110x_STAT1, &stv6110x->regs[STV6110x_STAT1]);
if (STV6110x_GETFIELD(STAT1_LOCK, stv6110x->regs[STV6110x_STAT1]))
*status = TUNER_PHASELOCKED;
else
*status = 0;
return 0;
}
static int stv6110x_release(struct dvb_frontend *fe)
{
struct stv6110x_state *stv6110x = fe->tuner_priv;
fe->tuner_priv = NULL;
kfree(stv6110x);
return 0;
}
static struct dvb_tuner_ops stv6110x_ops = {
.info = {
.name = "STV6110(A) Silicon Tuner",
.frequency_min = 950000,
.frequency_max = 2150000,
.frequency_step = 0,
},
.init = stv6110x_init,
.sleep = stv6110x_sleep,
.release = stv6110x_release
};
static struct stv6110x_devctl stv6110x_ctl = {
.tuner_init = stv6110x_init,
.tuner_set_mode = stv6110x_set_mode,
.tuner_set_frequency = stv6110x_set_frequency,
.tuner_get_frequency = stv6110x_get_frequency,
.tuner_set_bandwidth = stv6110x_set_bandwidth,
.tuner_get_bandwidth = stv6110x_get_bandwidth,
.tuner_set_bbgain = stv6110x_set_bbgain,
.tuner_get_bbgain = stv6110x_get_bbgain,
.tuner_set_refclk = stv6110x_set_refclock,
.tuner_get_status = stv6110x_get_status,
};
struct stv6110x_devctl *stv6110x_attach(struct dvb_frontend *fe,
const struct stv6110x_config *config,
struct i2c_adapter *i2c)
{
struct stv6110x_state *stv6110x;
u8 default_regs[] = {0x07, 0x11, 0xdc, 0x85, 0x17, 0x01, 0xe6, 0x1e};
int ret;
stv6110x = kzalloc(sizeof (struct stv6110x_state), GFP_KERNEL);
if (stv6110x == NULL)
goto error;
stv6110x->i2c = i2c;
stv6110x->config = config;
stv6110x->devctl = &stv6110x_ctl;
memcpy(stv6110x->regs, default_regs, 8);
/* setup divider */
switch (stv6110x->config->clk_div) {
default:
case 1:
STV6110x_SETFIELD(stv6110x->regs[STV6110x_CTRL2], CTRL2_CO_DIV, 0);
break;
case 2:
STV6110x_SETFIELD(stv6110x->regs[STV6110x_CTRL2], CTRL2_CO_DIV, 1);
break;
case 4:
STV6110x_SETFIELD(stv6110x->regs[STV6110x_CTRL2], CTRL2_CO_DIV, 2);
break;
case 8:
case 0:
STV6110x_SETFIELD(stv6110x->regs[STV6110x_CTRL2], CTRL2_CO_DIV, 3);
break;
}
if (fe->ops.i2c_gate_ctrl) {
ret = fe->ops.i2c_gate_ctrl(fe, 1);
if (ret < 0)
goto error;
}
ret = stv6110x_write_regs(stv6110x, 0, stv6110x->regs,
ARRAY_SIZE(stv6110x->regs));
if (ret < 0) {
dprintk(FE_ERROR, 1, "Initialization failed");
goto error;
}
if (fe->ops.i2c_gate_ctrl) {
ret = fe->ops.i2c_gate_ctrl(fe, 0);
if (ret < 0)
goto error;
}
fe->tuner_priv = stv6110x;
fe->ops.tuner_ops = stv6110x_ops;
printk("%s: Attaching STV6110x \n", __func__);
return stv6110x->devctl;
error:
kfree(stv6110x);
return NULL;
}
EXPORT_SYMBOL(stv6110x_attach);
MODULE_AUTHOR("Manu Abraham");
MODULE_DESCRIPTION("STV6110x Silicon tuner");
MODULE_LICENSE("GPL");
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