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linux-next/drivers/media/radio/si4713-i2c.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

2062 lines
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/*
* drivers/media/radio/si4713-i2c.c
*
* Silicon Labs Si4713 FM Radio Transmitter I2C commands.
*
* Copyright (c) 2009 Nokia Corporation
* Contact: Eduardo Valentin <eduardo.valentin@nokia.com>
*
* 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <linux/mutex.h>
#include <linux/completion.h>
#include <linux/delay.h>
#include <linux/interrupt.h>
#include <linux/i2c.h>
#include <linux/slab.h>
#include <media/v4l2-device.h>
#include <media/v4l2-ioctl.h>
#include <media/v4l2-common.h>
#include "si4713-i2c.h"
/* module parameters */
static int debug;
module_param(debug, int, S_IRUGO | S_IWUSR);
MODULE_PARM_DESC(debug, "Debug level (0 - 2)");
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Eduardo Valentin <eduardo.valentin@nokia.com>");
MODULE_DESCRIPTION("I2C driver for Si4713 FM Radio Transmitter");
MODULE_VERSION("0.0.1");
#define DEFAULT_RDS_PI 0x00
#define DEFAULT_RDS_PTY 0x00
#define DEFAULT_RDS_PS_NAME ""
#define DEFAULT_RDS_RADIO_TEXT DEFAULT_RDS_PS_NAME
#define DEFAULT_RDS_DEVIATION 0x00C8
#define DEFAULT_RDS_PS_REPEAT_COUNT 0x0003
#define DEFAULT_LIMITER_RTIME 0x1392
#define DEFAULT_LIMITER_DEV 0x102CA
#define DEFAULT_PILOT_FREQUENCY 0x4A38
#define DEFAULT_PILOT_DEVIATION 0x1A5E
#define DEFAULT_ACOMP_ATIME 0x0000
#define DEFAULT_ACOMP_RTIME 0xF4240L
#define DEFAULT_ACOMP_GAIN 0x0F
#define DEFAULT_ACOMP_THRESHOLD (-0x28)
#define DEFAULT_MUTE 0x01
#define DEFAULT_POWER_LEVEL 88
#define DEFAULT_FREQUENCY 8800
#define DEFAULT_PREEMPHASIS FMPE_EU
#define DEFAULT_TUNE_RNL 0xFF
#define to_si4713_device(sd) container_of(sd, struct si4713_device, sd)
/* frequency domain transformation (using times 10 to avoid floats) */
#define FREQDEV_UNIT 100000
#define FREQV4L2_MULTI 625
#define si4713_to_v4l2(f) ((f * FREQDEV_UNIT) / FREQV4L2_MULTI)
#define v4l2_to_si4713(f) ((f * FREQV4L2_MULTI) / FREQDEV_UNIT)
#define FREQ_RANGE_LOW 7600
#define FREQ_RANGE_HIGH 10800
#define MAX_ARGS 7
#define RDS_BLOCK 8
#define RDS_BLOCK_CLEAR 0x03
#define RDS_BLOCK_LOAD 0x04
#define RDS_RADIOTEXT_2A 0x20
#define RDS_RADIOTEXT_BLK_SIZE 4
#define RDS_RADIOTEXT_INDEX_MAX 0x0F
#define RDS_CARRIAGE_RETURN 0x0D
#define rds_ps_nblocks(len) ((len / RDS_BLOCK) + (len % RDS_BLOCK ? 1 : 0))
#define get_status_bit(p, b, m) (((p) & (m)) >> (b))
#define set_bits(p, v, b, m) (((p) & ~(m)) | ((v) << (b)))
#define ATTACK_TIME_UNIT 500
#define POWER_OFF 0x00
#define POWER_ON 0x01
#define msb(x) ((u8)((u16) x >> 8))
#define lsb(x) ((u8)((u16) x & 0x00FF))
#define compose_u16(msb, lsb) (((u16)msb << 8) | lsb)
#define check_command_failed(status) (!(status & SI4713_CTS) || \
(status & SI4713_ERR))
/* mute definition */
#define set_mute(p) ((p & 1) | ((p & 1) << 1));
#define get_mute(p) (p & 0x01)
#ifdef DEBUG
#define DBG_BUFFER(device, message, buffer, size) \
{ \
int i; \
char str[(size)*5]; \
for (i = 0; i < size; i++) \
sprintf(str + i * 5, " 0x%02x", buffer[i]); \
v4l2_dbg(2, debug, device, "%s:%s\n", message, str); \
}
#else
#define DBG_BUFFER(device, message, buffer, size)
#endif
/*
* Values for limiter release time (sorted by second column)
* device release
* value time (us)
*/
static long limiter_times[] = {
2000, 250,
1000, 500,
510, 1000,
255, 2000,
170, 3000,
127, 4020,
102, 5010,
85, 6020,
73, 7010,
64, 7990,
57, 8970,
51, 10030,
25, 20470,
17, 30110,
13, 39380,
10, 51190,
8, 63690,
7, 73140,
6, 85330,
5, 102390,
};
/*
* Values for audio compression release time (sorted by second column)
* device release
* value time (us)
*/
static unsigned long acomp_rtimes[] = {
0, 100000,
1, 200000,
2, 350000,
3, 525000,
4, 1000000,
};
/*
* Values for preemphasis (sorted by second column)
* device preemphasis
* value value (v4l2)
*/
static unsigned long preemphasis_values[] = {
FMPE_DISABLED, V4L2_PREEMPHASIS_DISABLED,
FMPE_EU, V4L2_PREEMPHASIS_50_uS,
FMPE_USA, V4L2_PREEMPHASIS_75_uS,
};
static int usecs_to_dev(unsigned long usecs, unsigned long const array[],
int size)
{
int i;
int rval = -EINVAL;
for (i = 0; i < size / 2; i++)
if (array[(i * 2) + 1] >= usecs) {
rval = array[i * 2];
break;
}
return rval;
}
static unsigned long dev_to_usecs(int value, unsigned long const array[],
int size)
{
int i;
int rval = -EINVAL;
for (i = 0; i < size / 2; i++)
if (array[i * 2] == value) {
rval = array[(i * 2) + 1];
break;
}
return rval;
}
/* si4713_handler: IRQ handler, just complete work */
static irqreturn_t si4713_handler(int irq, void *dev)
{
struct si4713_device *sdev = dev;
v4l2_dbg(2, debug, &sdev->sd,
"%s: sending signal to completion work.\n", __func__);
complete(&sdev->work);
return IRQ_HANDLED;
}
/*
* si4713_send_command - sends a command to si4713 and waits its response
* @sdev: si4713_device structure for the device we are communicating
* @command: command id
* @args: command arguments we are sending (up to 7)
* @argn: actual size of @args
* @response: buffer to place the expected response from the device (up to 15)
* @respn: actual size of @response
* @usecs: amount of time to wait before reading the response (in usecs)
*/
static int si4713_send_command(struct si4713_device *sdev, const u8 command,
const u8 args[], const int argn,
u8 response[], const int respn, const int usecs)
{
struct i2c_client *client = v4l2_get_subdevdata(&sdev->sd);
u8 data1[MAX_ARGS + 1];
int err;
if (!client->adapter)
return -ENODEV;
/* First send the command and its arguments */
data1[0] = command;
memcpy(data1 + 1, args, argn);
DBG_BUFFER(&sdev->sd, "Parameters", data1, argn + 1);
err = i2c_master_send(client, data1, argn + 1);
if (err != argn + 1) {
v4l2_err(&sdev->sd, "Error while sending command 0x%02x\n",
command);
return (err > 0) ? -EIO : err;
}
/* Wait response from interrupt */
if (!wait_for_completion_timeout(&sdev->work,
usecs_to_jiffies(usecs) + 1))
v4l2_warn(&sdev->sd,
"(%s) Device took too much time to answer.\n",
__func__);
/* Then get the response */
err = i2c_master_recv(client, response, respn);
if (err != respn) {
v4l2_err(&sdev->sd,
"Error while reading response for command 0x%02x\n",
command);
return (err > 0) ? -EIO : err;
}
DBG_BUFFER(&sdev->sd, "Response", response, respn);
if (check_command_failed(response[0]))
return -EBUSY;
return 0;
}
/*
* si4713_read_property - reads a si4713 property
* @sdev: si4713_device structure for the device we are communicating
* @prop: property identification number
* @pv: property value to be returned on success
*/
static int si4713_read_property(struct si4713_device *sdev, u16 prop, u32 *pv)
{
int err;
u8 val[SI4713_GET_PROP_NRESP];
/*
* .First byte = 0
* .Second byte = property's MSB
* .Third byte = property's LSB
*/
const u8 args[SI4713_GET_PROP_NARGS] = {
0x00,
msb(prop),
lsb(prop),
};
err = si4713_send_command(sdev, SI4713_CMD_GET_PROPERTY,
args, ARRAY_SIZE(args), val,
ARRAY_SIZE(val), DEFAULT_TIMEOUT);
if (err < 0)
return err;
*pv = compose_u16(val[2], val[3]);
v4l2_dbg(1, debug, &sdev->sd,
"%s: property=0x%02x value=0x%02x status=0x%02x\n",
__func__, prop, *pv, val[0]);
return err;
}
/*
* si4713_write_property - modifies a si4713 property
* @sdev: si4713_device structure for the device we are communicating
* @prop: property identification number
* @val: new value for that property
*/
static int si4713_write_property(struct si4713_device *sdev, u16 prop, u16 val)
{
int rval;
u8 resp[SI4713_SET_PROP_NRESP];
/*
* .First byte = 0
* .Second byte = property's MSB
* .Third byte = property's LSB
* .Fourth byte = value's MSB
* .Fifth byte = value's LSB
*/
const u8 args[SI4713_SET_PROP_NARGS] = {
0x00,
msb(prop),
lsb(prop),
msb(val),
lsb(val),
};
rval = si4713_send_command(sdev, SI4713_CMD_SET_PROPERTY,
args, ARRAY_SIZE(args),
resp, ARRAY_SIZE(resp),
DEFAULT_TIMEOUT);
if (rval < 0)
return rval;
v4l2_dbg(1, debug, &sdev->sd,
"%s: property=0x%02x value=0x%02x status=0x%02x\n",
__func__, prop, val, resp[0]);
/*
* As there is no command response for SET_PROPERTY,
* wait Tcomp time to finish before proceed, in order
* to have property properly set.
*/
msleep(TIMEOUT_SET_PROPERTY);
return rval;
}
/*
* si4713_powerup - Powers the device up
* @sdev: si4713_device structure for the device we are communicating
*/
static int si4713_powerup(struct si4713_device *sdev)
{
int err;
u8 resp[SI4713_PWUP_NRESP];
/*
* .First byte = Enabled interrupts and boot function
* .Second byte = Input operation mode
*/
const u8 args[SI4713_PWUP_NARGS] = {
SI4713_PWUP_CTSIEN | SI4713_PWUP_GPO2OEN | SI4713_PWUP_FUNC_TX,
SI4713_PWUP_OPMOD_ANALOG,
};
if (sdev->power_state)
return 0;
sdev->platform_data->set_power(1);
err = si4713_send_command(sdev, SI4713_CMD_POWER_UP,
args, ARRAY_SIZE(args),
resp, ARRAY_SIZE(resp),
TIMEOUT_POWER_UP);
if (!err) {
v4l2_dbg(1, debug, &sdev->sd, "Powerup response: 0x%02x\n",
resp[0]);
v4l2_dbg(1, debug, &sdev->sd, "Device in power up mode\n");
sdev->power_state = POWER_ON;
err = si4713_write_property(sdev, SI4713_GPO_IEN,
SI4713_STC_INT | SI4713_CTS);
} else {
sdev->platform_data->set_power(0);
}
return err;
}
/*
* si4713_powerdown - Powers the device down
* @sdev: si4713_device structure for the device we are communicating
*/
static int si4713_powerdown(struct si4713_device *sdev)
{
int err;
u8 resp[SI4713_PWDN_NRESP];
if (!sdev->power_state)
return 0;
err = si4713_send_command(sdev, SI4713_CMD_POWER_DOWN,
NULL, 0,
resp, ARRAY_SIZE(resp),
DEFAULT_TIMEOUT);
if (!err) {
v4l2_dbg(1, debug, &sdev->sd, "Power down response: 0x%02x\n",
resp[0]);
v4l2_dbg(1, debug, &sdev->sd, "Device in reset mode\n");
sdev->platform_data->set_power(0);
sdev->power_state = POWER_OFF;
}
return err;
}
/*
* si4713_checkrev - Checks if we are treating a device with the correct rev.
* @sdev: si4713_device structure for the device we are communicating
*/
static int si4713_checkrev(struct si4713_device *sdev)
{
struct i2c_client *client = v4l2_get_subdevdata(&sdev->sd);
int rval;
u8 resp[SI4713_GETREV_NRESP];
mutex_lock(&sdev->mutex);
rval = si4713_send_command(sdev, SI4713_CMD_GET_REV,
NULL, 0,
resp, ARRAY_SIZE(resp),
DEFAULT_TIMEOUT);
if (rval < 0)
goto unlock;
if (resp[1] == SI4713_PRODUCT_NUMBER) {
v4l2_info(&sdev->sd, "chip found @ 0x%02x (%s)\n",
client->addr << 1, client->adapter->name);
} else {
v4l2_err(&sdev->sd, "Invalid product number\n");
rval = -EINVAL;
}
unlock:
mutex_unlock(&sdev->mutex);
return rval;
}
/*
* si4713_wait_stc - Waits STC interrupt and clears status bits. Usefull
* for TX_TUNE_POWER, TX_TUNE_FREQ and TX_TUNE_MEAS
* @sdev: si4713_device structure for the device we are communicating
* @usecs: timeout to wait for STC interrupt signal
*/
static int si4713_wait_stc(struct si4713_device *sdev, const int usecs)
{
int err;
u8 resp[SI4713_GET_STATUS_NRESP];
/* Wait response from STC interrupt */
if (!wait_for_completion_timeout(&sdev->work,
usecs_to_jiffies(usecs) + 1))
v4l2_warn(&sdev->sd,
"%s: device took too much time to answer (%d usec).\n",
__func__, usecs);
/* Clear status bits */
err = si4713_send_command(sdev, SI4713_CMD_GET_INT_STATUS,
NULL, 0,
resp, ARRAY_SIZE(resp),
DEFAULT_TIMEOUT);
if (err < 0)
goto exit;
v4l2_dbg(1, debug, &sdev->sd,
"%s: status bits: 0x%02x\n", __func__, resp[0]);
if (!(resp[0] & SI4713_STC_INT))
err = -EIO;
exit:
return err;
}
/*
* si4713_tx_tune_freq - Sets the state of the RF carrier and sets the tuning
* frequency between 76 and 108 MHz in 10 kHz units and
* steps of 50 kHz.
* @sdev: si4713_device structure for the device we are communicating
* @frequency: desired frequency (76 - 108 MHz, unit 10 KHz, step 50 kHz)
*/
static int si4713_tx_tune_freq(struct si4713_device *sdev, u16 frequency)
{
int err;
u8 val[SI4713_TXFREQ_NRESP];
/*
* .First byte = 0
* .Second byte = frequency's MSB
* .Third byte = frequency's LSB
*/
const u8 args[SI4713_TXFREQ_NARGS] = {
0x00,
msb(frequency),
lsb(frequency),
};
err = si4713_send_command(sdev, SI4713_CMD_TX_TUNE_FREQ,
args, ARRAY_SIZE(args), val,
ARRAY_SIZE(val), DEFAULT_TIMEOUT);
if (err < 0)
return err;
v4l2_dbg(1, debug, &sdev->sd,
"%s: frequency=0x%02x status=0x%02x\n", __func__,
frequency, val[0]);
err = si4713_wait_stc(sdev, TIMEOUT_TX_TUNE);
if (err < 0)
return err;
return compose_u16(args[1], args[2]);
}
/*
* si4713_tx_tune_power - Sets the RF voltage level between 88 and 115 dBuV in
* 1 dB units. A value of 0x00 indicates off. The command
* also sets the antenna tuning capacitance. A value of 0
* indicates autotuning, and a value of 1 - 191 indicates
* a manual override, which results in a tuning
* capacitance of 0.25 pF x @antcap.
* @sdev: si4713_device structure for the device we are communicating
* @power: tuning power (88 - 115 dBuV, unit/step 1 dB)
* @antcap: value of antenna tuning capacitor (0 - 191)
*/
static int si4713_tx_tune_power(struct si4713_device *sdev, u8 power,
u8 antcap)
{
int err;
u8 val[SI4713_TXPWR_NRESP];
/*
* .First byte = 0
* .Second byte = 0
* .Third byte = power
* .Fourth byte = antcap
*/
const u8 args[SI4713_TXPWR_NARGS] = {
0x00,
0x00,
power,
antcap,
};
if (((power > 0) && (power < SI4713_MIN_POWER)) ||
power > SI4713_MAX_POWER || antcap > SI4713_MAX_ANTCAP)
return -EDOM;
err = si4713_send_command(sdev, SI4713_CMD_TX_TUNE_POWER,
args, ARRAY_SIZE(args), val,
ARRAY_SIZE(val), DEFAULT_TIMEOUT);
if (err < 0)
return err;
v4l2_dbg(1, debug, &sdev->sd,
"%s: power=0x%02x antcap=0x%02x status=0x%02x\n",
__func__, power, antcap, val[0]);
return si4713_wait_stc(sdev, TIMEOUT_TX_TUNE_POWER);
}
/*
* si4713_tx_tune_measure - Enters receive mode and measures the received noise
* level in units of dBuV on the selected frequency.
* The Frequency must be between 76 and 108 MHz in 10 kHz
* units and steps of 50 kHz. The command also sets the
* antenna tuning capacitance. A value of 0 means
* autotuning, and a value of 1 to 191 indicates manual
* override.
* @sdev: si4713_device structure for the device we are communicating
* @frequency: desired frequency (76 - 108 MHz, unit 10 KHz, step 50 kHz)
* @antcap: value of antenna tuning capacitor (0 - 191)
*/
static int si4713_tx_tune_measure(struct si4713_device *sdev, u16 frequency,
u8 antcap)
{
int err;
u8 val[SI4713_TXMEA_NRESP];
/*
* .First byte = 0
* .Second byte = frequency's MSB
* .Third byte = frequency's LSB
* .Fourth byte = antcap
*/
const u8 args[SI4713_TXMEA_NARGS] = {
0x00,
msb(frequency),
lsb(frequency),
antcap,
};
sdev->tune_rnl = DEFAULT_TUNE_RNL;
if (antcap > SI4713_MAX_ANTCAP)
return -EDOM;
err = si4713_send_command(sdev, SI4713_CMD_TX_TUNE_MEASURE,
args, ARRAY_SIZE(args), val,
ARRAY_SIZE(val), DEFAULT_TIMEOUT);
if (err < 0)
return err;
v4l2_dbg(1, debug, &sdev->sd,
"%s: frequency=0x%02x antcap=0x%02x status=0x%02x\n",
__func__, frequency, antcap, val[0]);
return si4713_wait_stc(sdev, TIMEOUT_TX_TUNE);
}
/*
* si4713_tx_tune_status- Returns the status of the tx_tune_freq, tx_tune_mea or
* tx_tune_power commands. This command return the current
* frequency, output voltage in dBuV, the antenna tunning
* capacitance value and the received noise level. The
* command also clears the stcint interrupt bit when the
* first bit of its arguments is high.
* @sdev: si4713_device structure for the device we are communicating
* @intack: 0x01 to clear the seek/tune complete interrupt status indicator.
* @frequency: returned frequency
* @power: returned power
* @antcap: returned antenna capacitance
* @noise: returned noise level
*/
static int si4713_tx_tune_status(struct si4713_device *sdev, u8 intack,
u16 *frequency, u8 *power,
u8 *antcap, u8 *noise)
{
int err;
u8 val[SI4713_TXSTATUS_NRESP];
/*
* .First byte = intack bit
*/
const u8 args[SI4713_TXSTATUS_NARGS] = {
intack & SI4713_INTACK_MASK,
};
err = si4713_send_command(sdev, SI4713_CMD_TX_TUNE_STATUS,
args, ARRAY_SIZE(args), val,
ARRAY_SIZE(val), DEFAULT_TIMEOUT);
if (!err) {
v4l2_dbg(1, debug, &sdev->sd,
"%s: status=0x%02x\n", __func__, val[0]);
*frequency = compose_u16(val[2], val[3]);
sdev->frequency = *frequency;
*power = val[5];
*antcap = val[6];
*noise = val[7];
v4l2_dbg(1, debug, &sdev->sd, "%s: response: %d x 10 kHz "
"(power %d, antcap %d, rnl %d)\n", __func__,
*frequency, *power, *antcap, *noise);
}
return err;
}
/*
* si4713_tx_rds_buff - Loads the RDS group buffer FIFO or circular buffer.
* @sdev: si4713_device structure for the device we are communicating
* @mode: the buffer operation mode.
* @rdsb: RDS Block B
* @rdsc: RDS Block C
* @rdsd: RDS Block D
* @cbleft: returns the number of available circular buffer blocks minus the
* number of used circular buffer blocks.
*/
static int si4713_tx_rds_buff(struct si4713_device *sdev, u8 mode, u16 rdsb,
u16 rdsc, u16 rdsd, s8 *cbleft)
{
int err;
u8 val[SI4713_RDSBUFF_NRESP];
const u8 args[SI4713_RDSBUFF_NARGS] = {
mode & SI4713_RDSBUFF_MODE_MASK,
msb(rdsb),
lsb(rdsb),
msb(rdsc),
lsb(rdsc),
msb(rdsd),
lsb(rdsd),
};
err = si4713_send_command(sdev, SI4713_CMD_TX_RDS_BUFF,
args, ARRAY_SIZE(args), val,
ARRAY_SIZE(val), DEFAULT_TIMEOUT);
if (!err) {
v4l2_dbg(1, debug, &sdev->sd,
"%s: status=0x%02x\n", __func__, val[0]);
*cbleft = (s8)val[2] - val[3];
v4l2_dbg(1, debug, &sdev->sd, "%s: response: interrupts"
" 0x%02x cb avail: %d cb used %d fifo avail"
" %d fifo used %d\n", __func__, val[1],
val[2], val[3], val[4], val[5]);
}
return err;
}
/*
* si4713_tx_rds_ps - Loads the program service buffer.
* @sdev: si4713_device structure for the device we are communicating
* @psid: program service id to be loaded.
* @pschar: assumed 4 size char array to be loaded into the program service
*/
static int si4713_tx_rds_ps(struct si4713_device *sdev, u8 psid,
unsigned char *pschar)
{
int err;
u8 val[SI4713_RDSPS_NRESP];
const u8 args[SI4713_RDSPS_NARGS] = {
psid & SI4713_RDSPS_PSID_MASK,
pschar[0],
pschar[1],
pschar[2],
pschar[3],
};
err = si4713_send_command(sdev, SI4713_CMD_TX_RDS_PS,
args, ARRAY_SIZE(args), val,
ARRAY_SIZE(val), DEFAULT_TIMEOUT);
if (err < 0)
return err;
v4l2_dbg(1, debug, &sdev->sd, "%s: status=0x%02x\n", __func__, val[0]);
return err;
}
static int si4713_set_power_state(struct si4713_device *sdev, u8 value)
{
int rval;
mutex_lock(&sdev->mutex);
if (value)
rval = si4713_powerup(sdev);
else
rval = si4713_powerdown(sdev);
mutex_unlock(&sdev->mutex);
return rval;
}
static int si4713_set_mute(struct si4713_device *sdev, u16 mute)
{
int rval = 0;
mute = set_mute(mute);
mutex_lock(&sdev->mutex);
if (sdev->power_state)
rval = si4713_write_property(sdev,
SI4713_TX_LINE_INPUT_MUTE, mute);
if (rval >= 0)
sdev->mute = get_mute(mute);
mutex_unlock(&sdev->mutex);
return rval;
}
static int si4713_set_rds_ps_name(struct si4713_device *sdev, char *ps_name)
{
int rval = 0, i;
u8 len = 0;
/* We want to clear the whole thing */
if (!strlen(ps_name))
memset(ps_name, 0, MAX_RDS_PS_NAME + 1);
mutex_lock(&sdev->mutex);
if (sdev->power_state) {
/* Write the new ps name and clear the padding */
for (i = 0; i < MAX_RDS_PS_NAME; i += (RDS_BLOCK / 2)) {
rval = si4713_tx_rds_ps(sdev, (i / (RDS_BLOCK / 2)),
ps_name + i);
if (rval < 0)
goto unlock;
}
/* Setup the size to be sent */
if (strlen(ps_name))
len = strlen(ps_name) - 1;
else
len = 1;
rval = si4713_write_property(sdev,
SI4713_TX_RDS_PS_MESSAGE_COUNT,
rds_ps_nblocks(len));
if (rval < 0)
goto unlock;
rval = si4713_write_property(sdev,
SI4713_TX_RDS_PS_REPEAT_COUNT,
DEFAULT_RDS_PS_REPEAT_COUNT * 2);
if (rval < 0)
goto unlock;
}
strncpy(sdev->rds_info.ps_name, ps_name, MAX_RDS_PS_NAME);
unlock:
mutex_unlock(&sdev->mutex);
return rval;
}
static int si4713_set_rds_radio_text(struct si4713_device *sdev, char *rt)
{
int rval = 0, i;
u16 t_index = 0;
u8 b_index = 0, cr_inserted = 0;
s8 left;
mutex_lock(&sdev->mutex);
if (!sdev->power_state)
goto copy;
rval = si4713_tx_rds_buff(sdev, RDS_BLOCK_CLEAR, 0, 0, 0, &left);
if (rval < 0)
goto unlock;
if (!strlen(rt))
goto copy;
do {
/* RDS spec says that if the last block isn't used,
* then apply a carriage return
*/
if (t_index < (RDS_RADIOTEXT_INDEX_MAX *
RDS_RADIOTEXT_BLK_SIZE)) {
for (i = 0; i < RDS_RADIOTEXT_BLK_SIZE; i++) {
if (!rt[t_index + i] || rt[t_index + i] ==
RDS_CARRIAGE_RETURN) {
rt[t_index + i] = RDS_CARRIAGE_RETURN;
cr_inserted = 1;
break;
}
}
}
rval = si4713_tx_rds_buff(sdev, RDS_BLOCK_LOAD,
compose_u16(RDS_RADIOTEXT_2A, b_index++),
compose_u16(rt[t_index], rt[t_index + 1]),
compose_u16(rt[t_index + 2], rt[t_index + 3]),
&left);
if (rval < 0)
goto unlock;
t_index += RDS_RADIOTEXT_BLK_SIZE;
if (cr_inserted)
break;
} while (left > 0);
copy:
strncpy(sdev->rds_info.radio_text, rt, MAX_RDS_RADIO_TEXT);
unlock:
mutex_unlock(&sdev->mutex);
return rval;
}
static int si4713_choose_econtrol_action(struct si4713_device *sdev, u32 id,
u32 **shadow, s32 *bit, s32 *mask, u16 *property, int *mul,
unsigned long **table, int *size)
{
s32 rval = 0;
switch (id) {
/* FM_TX class controls */
case V4L2_CID_RDS_TX_PI:
*property = SI4713_TX_RDS_PI;
*mul = 1;
*shadow = &sdev->rds_info.pi;
break;
case V4L2_CID_AUDIO_COMPRESSION_THRESHOLD:
*property = SI4713_TX_ACOMP_THRESHOLD;
*mul = 1;
*shadow = &sdev->acomp_info.threshold;
break;
case V4L2_CID_AUDIO_COMPRESSION_GAIN:
*property = SI4713_TX_ACOMP_GAIN;
*mul = 1;
*shadow = &sdev->acomp_info.gain;
break;
case V4L2_CID_PILOT_TONE_FREQUENCY:
*property = SI4713_TX_PILOT_FREQUENCY;
*mul = 1;
*shadow = &sdev->pilot_info.frequency;
break;
case V4L2_CID_AUDIO_COMPRESSION_ATTACK_TIME:
*property = SI4713_TX_ACOMP_ATTACK_TIME;
*mul = ATTACK_TIME_UNIT;
*shadow = &sdev->acomp_info.attack_time;
break;
case V4L2_CID_PILOT_TONE_DEVIATION:
*property = SI4713_TX_PILOT_DEVIATION;
*mul = 10;
*shadow = &sdev->pilot_info.deviation;
break;
case V4L2_CID_AUDIO_LIMITER_DEVIATION:
*property = SI4713_TX_AUDIO_DEVIATION;
*mul = 10;
*shadow = &sdev->limiter_info.deviation;
break;
case V4L2_CID_RDS_TX_DEVIATION:
*property = SI4713_TX_RDS_DEVIATION;
*mul = 1;
*shadow = &sdev->rds_info.deviation;
break;
case V4L2_CID_RDS_TX_PTY:
*property = SI4713_TX_RDS_PS_MISC;
*bit = 5;
*mask = 0x1F << 5;
*shadow = &sdev->rds_info.pty;
break;
case V4L2_CID_AUDIO_LIMITER_ENABLED:
*property = SI4713_TX_ACOMP_ENABLE;
*bit = 1;
*mask = 1 << 1;
*shadow = &sdev->limiter_info.enabled;
break;
case V4L2_CID_AUDIO_COMPRESSION_ENABLED:
*property = SI4713_TX_ACOMP_ENABLE;
*bit = 0;
*mask = 1 << 0;
*shadow = &sdev->acomp_info.enabled;
break;
case V4L2_CID_PILOT_TONE_ENABLED:
*property = SI4713_TX_COMPONENT_ENABLE;
*bit = 0;
*mask = 1 << 0;
*shadow = &sdev->pilot_info.enabled;
break;
case V4L2_CID_AUDIO_LIMITER_RELEASE_TIME:
*property = SI4713_TX_LIMITER_RELEASE_TIME;
*table = limiter_times;
*size = ARRAY_SIZE(limiter_times);
*shadow = &sdev->limiter_info.release_time;
break;
case V4L2_CID_AUDIO_COMPRESSION_RELEASE_TIME:
*property = SI4713_TX_ACOMP_RELEASE_TIME;
*table = acomp_rtimes;
*size = ARRAY_SIZE(acomp_rtimes);
*shadow = &sdev->acomp_info.release_time;
break;
case V4L2_CID_TUNE_PREEMPHASIS:
*property = SI4713_TX_PREEMPHASIS;
*table = preemphasis_values;
*size = ARRAY_SIZE(preemphasis_values);
*shadow = &sdev->preemphasis;
break;
default:
rval = -EINVAL;
};
return rval;
}
static int si4713_queryctrl(struct v4l2_subdev *sd, struct v4l2_queryctrl *qc);
/* write string property */
static int si4713_write_econtrol_string(struct si4713_device *sdev,
struct v4l2_ext_control *control)
{
struct v4l2_queryctrl vqc;
int len;
s32 rval = 0;
vqc.id = control->id;
rval = si4713_queryctrl(&sdev->sd, &vqc);
if (rval < 0)
goto exit;
switch (control->id) {
case V4L2_CID_RDS_TX_PS_NAME: {
char ps_name[MAX_RDS_PS_NAME + 1];
len = control->size - 1;
if (len > MAX_RDS_PS_NAME) {
rval = -ERANGE;
goto exit;
}
rval = copy_from_user(ps_name, control->string, len);
if (rval < 0)
goto exit;
ps_name[len] = '\0';
if (strlen(ps_name) % vqc.step) {
rval = -ERANGE;
goto exit;
}
rval = si4713_set_rds_ps_name(sdev, ps_name);
}
break;
case V4L2_CID_RDS_TX_RADIO_TEXT: {
char radio_text[MAX_RDS_RADIO_TEXT + 1];
len = control->size - 1;
if (len > MAX_RDS_RADIO_TEXT) {
rval = -ERANGE;
goto exit;
}
rval = copy_from_user(radio_text, control->string, len);
if (rval < 0)
goto exit;
radio_text[len] = '\0';
if (strlen(radio_text) % vqc.step) {
rval = -ERANGE;
goto exit;
}
rval = si4713_set_rds_radio_text(sdev, radio_text);
}
break;
default:
rval = -EINVAL;
break;
};
exit:
return rval;
}
static int validate_range(struct v4l2_subdev *sd,
struct v4l2_ext_control *control)
{
struct v4l2_queryctrl vqc;
int rval;
vqc.id = control->id;
rval = si4713_queryctrl(sd, &vqc);
if (rval < 0)
goto exit;
if (control->value < vqc.minimum || control->value > vqc.maximum)
rval = -ERANGE;
exit:
return rval;
}
/* properties which use tx_tune_power*/
static int si4713_write_econtrol_tune(struct si4713_device *sdev,
struct v4l2_ext_control *control)
{
s32 rval = 0;
u8 power, antcap;
rval = validate_range(&sdev->sd, control);
if (rval < 0)
goto exit;
mutex_lock(&sdev->mutex);
switch (control->id) {
case V4L2_CID_TUNE_POWER_LEVEL:
power = control->value;
antcap = sdev->antenna_capacitor;
break;
case V4L2_CID_TUNE_ANTENNA_CAPACITOR:
power = sdev->power_level;
antcap = control->value;
break;
default:
rval = -EINVAL;
goto unlock;
};
if (sdev->power_state)
rval = si4713_tx_tune_power(sdev, power, antcap);
if (rval == 0) {
sdev->power_level = power;
sdev->antenna_capacitor = antcap;
}
unlock:
mutex_unlock(&sdev->mutex);
exit:
return rval;
}
static int si4713_write_econtrol_integers(struct si4713_device *sdev,
struct v4l2_ext_control *control)
{
s32 rval;
u32 *shadow = NULL, val = 0;
s32 bit = 0, mask = 0;
u16 property = 0;
int mul = 0;
unsigned long *table = NULL;
int size = 0;
rval = validate_range(&sdev->sd, control);
if (rval < 0)
goto exit;
rval = si4713_choose_econtrol_action(sdev, control->id, &shadow, &bit,
&mask, &property, &mul, &table, &size);
if (rval < 0)
goto exit;
val = control->value;
if (mul) {
val = control->value / mul;
} else if (table) {
rval = usecs_to_dev(control->value, table, size);
if (rval < 0)
goto exit;
val = rval;
rval = 0;
}
mutex_lock(&sdev->mutex);
if (sdev->power_state) {
if (mask) {
rval = si4713_read_property(sdev, property, &val);
if (rval < 0)
goto unlock;
val = set_bits(val, control->value, bit, mask);
}
rval = si4713_write_property(sdev, property, val);
if (rval < 0)
goto unlock;
if (mask)
val = control->value;
}
if (mul) {
*shadow = val * mul;
} else if (table) {
rval = dev_to_usecs(val, table, size);
if (rval < 0)
goto unlock;
*shadow = rval;
rval = 0;
} else {
*shadow = val;
}
unlock:
mutex_unlock(&sdev->mutex);
exit:
return rval;
}
static int si4713_s_frequency(struct v4l2_subdev *sd, struct v4l2_frequency *f);
static int si4713_s_modulator(struct v4l2_subdev *sd, struct v4l2_modulator *);
/*
* si4713_setup - Sets the device up with current configuration.
* @sdev: si4713_device structure for the device we are communicating
*/
static int si4713_setup(struct si4713_device *sdev)
{
struct v4l2_ext_control ctrl;
struct v4l2_frequency f;
struct v4l2_modulator vm;
struct si4713_device *tmp;
int rval = 0;
tmp = kmalloc(sizeof(*tmp), GFP_KERNEL);
if (!tmp)
return -ENOMEM;
/* Get a local copy to avoid race */
mutex_lock(&sdev->mutex);
memcpy(tmp, sdev, sizeof(*sdev));
mutex_unlock(&sdev->mutex);
ctrl.id = V4L2_CID_RDS_TX_PI;
ctrl.value = tmp->rds_info.pi;
rval |= si4713_write_econtrol_integers(sdev, &ctrl);
ctrl.id = V4L2_CID_AUDIO_COMPRESSION_THRESHOLD;
ctrl.value = tmp->acomp_info.threshold;
rval |= si4713_write_econtrol_integers(sdev, &ctrl);
ctrl.id = V4L2_CID_AUDIO_COMPRESSION_GAIN;
ctrl.value = tmp->acomp_info.gain;
rval |= si4713_write_econtrol_integers(sdev, &ctrl);
ctrl.id = V4L2_CID_PILOT_TONE_FREQUENCY;
ctrl.value = tmp->pilot_info.frequency;
rval |= si4713_write_econtrol_integers(sdev, &ctrl);
ctrl.id = V4L2_CID_AUDIO_COMPRESSION_ATTACK_TIME;
ctrl.value = tmp->acomp_info.attack_time;
rval |= si4713_write_econtrol_integers(sdev, &ctrl);
ctrl.id = V4L2_CID_PILOT_TONE_DEVIATION;
ctrl.value = tmp->pilot_info.deviation;
rval |= si4713_write_econtrol_integers(sdev, &ctrl);
ctrl.id = V4L2_CID_AUDIO_LIMITER_DEVIATION;
ctrl.value = tmp->limiter_info.deviation;
rval |= si4713_write_econtrol_integers(sdev, &ctrl);
ctrl.id = V4L2_CID_RDS_TX_DEVIATION;
ctrl.value = tmp->rds_info.deviation;
rval |= si4713_write_econtrol_integers(sdev, &ctrl);
ctrl.id = V4L2_CID_RDS_TX_PTY;
ctrl.value = tmp->rds_info.pty;
rval |= si4713_write_econtrol_integers(sdev, &ctrl);
ctrl.id = V4L2_CID_AUDIO_LIMITER_ENABLED;
ctrl.value = tmp->limiter_info.enabled;
rval |= si4713_write_econtrol_integers(sdev, &ctrl);
ctrl.id = V4L2_CID_AUDIO_COMPRESSION_ENABLED;
ctrl.value = tmp->acomp_info.enabled;
rval |= si4713_write_econtrol_integers(sdev, &ctrl);
ctrl.id = V4L2_CID_PILOT_TONE_ENABLED;
ctrl.value = tmp->pilot_info.enabled;
rval |= si4713_write_econtrol_integers(sdev, &ctrl);
ctrl.id = V4L2_CID_AUDIO_LIMITER_RELEASE_TIME;
ctrl.value = tmp->limiter_info.release_time;
rval |= si4713_write_econtrol_integers(sdev, &ctrl);
ctrl.id = V4L2_CID_AUDIO_COMPRESSION_RELEASE_TIME;
ctrl.value = tmp->acomp_info.release_time;
rval |= si4713_write_econtrol_integers(sdev, &ctrl);
ctrl.id = V4L2_CID_TUNE_PREEMPHASIS;
ctrl.value = tmp->preemphasis;
rval |= si4713_write_econtrol_integers(sdev, &ctrl);
ctrl.id = V4L2_CID_RDS_TX_PS_NAME;
rval |= si4713_set_rds_ps_name(sdev, tmp->rds_info.ps_name);
ctrl.id = V4L2_CID_RDS_TX_RADIO_TEXT;
rval |= si4713_set_rds_radio_text(sdev, tmp->rds_info.radio_text);
/* Device procedure needs to set frequency first */
f.frequency = tmp->frequency ? tmp->frequency : DEFAULT_FREQUENCY;
f.frequency = si4713_to_v4l2(f.frequency);
rval |= si4713_s_frequency(&sdev->sd, &f);
ctrl.id = V4L2_CID_TUNE_POWER_LEVEL;
ctrl.value = tmp->power_level;
rval |= si4713_write_econtrol_tune(sdev, &ctrl);
ctrl.id = V4L2_CID_TUNE_ANTENNA_CAPACITOR;
ctrl.value = tmp->antenna_capacitor;
rval |= si4713_write_econtrol_tune(sdev, &ctrl);
vm.index = 0;
if (tmp->stereo)
vm.txsubchans = V4L2_TUNER_SUB_STEREO;
else
vm.txsubchans = V4L2_TUNER_SUB_MONO;
if (tmp->rds_info.enabled)
vm.txsubchans |= V4L2_TUNER_SUB_RDS;
si4713_s_modulator(&sdev->sd, &vm);
kfree(tmp);
return rval;
}
/*
* si4713_initialize - Sets the device up with default configuration.
* @sdev: si4713_device structure for the device we are communicating
*/
static int si4713_initialize(struct si4713_device *sdev)
{
int rval;
rval = si4713_set_power_state(sdev, POWER_ON);
if (rval < 0)
goto exit;
rval = si4713_checkrev(sdev);
if (rval < 0)
goto exit;
rval = si4713_set_power_state(sdev, POWER_OFF);
if (rval < 0)
goto exit;
mutex_lock(&sdev->mutex);
sdev->rds_info.pi = DEFAULT_RDS_PI;
sdev->rds_info.pty = DEFAULT_RDS_PTY;
sdev->rds_info.deviation = DEFAULT_RDS_DEVIATION;
strlcpy(sdev->rds_info.ps_name, DEFAULT_RDS_PS_NAME, MAX_RDS_PS_NAME);
strlcpy(sdev->rds_info.radio_text, DEFAULT_RDS_RADIO_TEXT,
MAX_RDS_RADIO_TEXT);
sdev->rds_info.enabled = 1;
sdev->limiter_info.release_time = DEFAULT_LIMITER_RTIME;
sdev->limiter_info.deviation = DEFAULT_LIMITER_DEV;
sdev->limiter_info.enabled = 1;
sdev->pilot_info.deviation = DEFAULT_PILOT_DEVIATION;
sdev->pilot_info.frequency = DEFAULT_PILOT_FREQUENCY;
sdev->pilot_info.enabled = 1;
sdev->acomp_info.release_time = DEFAULT_ACOMP_RTIME;
sdev->acomp_info.attack_time = DEFAULT_ACOMP_ATIME;
sdev->acomp_info.threshold = DEFAULT_ACOMP_THRESHOLD;
sdev->acomp_info.gain = DEFAULT_ACOMP_GAIN;
sdev->acomp_info.enabled = 1;
sdev->frequency = DEFAULT_FREQUENCY;
sdev->preemphasis = DEFAULT_PREEMPHASIS;
sdev->mute = DEFAULT_MUTE;
sdev->power_level = DEFAULT_POWER_LEVEL;
sdev->antenna_capacitor = 0;
sdev->stereo = 1;
sdev->tune_rnl = DEFAULT_TUNE_RNL;
mutex_unlock(&sdev->mutex);
exit:
return rval;
}
/* read string property */
static int si4713_read_econtrol_string(struct si4713_device *sdev,
struct v4l2_ext_control *control)
{
s32 rval = 0;
switch (control->id) {
case V4L2_CID_RDS_TX_PS_NAME:
if (strlen(sdev->rds_info.ps_name) + 1 > control->size) {
control->size = MAX_RDS_PS_NAME + 1;
rval = -ENOSPC;
goto exit;
}
rval = copy_to_user(control->string, sdev->rds_info.ps_name,
strlen(sdev->rds_info.ps_name) + 1);
break;
case V4L2_CID_RDS_TX_RADIO_TEXT:
if (strlen(sdev->rds_info.radio_text) + 1 > control->size) {
control->size = MAX_RDS_RADIO_TEXT + 1;
rval = -ENOSPC;
goto exit;
}
rval = copy_to_user(control->string, sdev->rds_info.radio_text,
strlen(sdev->rds_info.radio_text) + 1);
break;
default:
rval = -EINVAL;
break;
};
exit:
return rval;
}
/*
* si4713_update_tune_status - update properties from tx_tune_status
* command. Must be called with sdev->mutex held.
* @sdev: si4713_device structure for the device we are communicating
*/
static int si4713_update_tune_status(struct si4713_device *sdev)
{
int rval;
u16 f = 0;
u8 p = 0, a = 0, n = 0;
rval = si4713_tx_tune_status(sdev, 0x00, &f, &p, &a, &n);
if (rval < 0)
goto exit;
sdev->power_level = p;
sdev->antenna_capacitor = a;
sdev->tune_rnl = n;
exit:
return rval;
}
/* properties which use tx_tune_status */
static int si4713_read_econtrol_tune(struct si4713_device *sdev,
struct v4l2_ext_control *control)
{
s32 rval = 0;
mutex_lock(&sdev->mutex);
if (sdev->power_state) {
rval = si4713_update_tune_status(sdev);
if (rval < 0)
goto unlock;
}
switch (control->id) {
case V4L2_CID_TUNE_POWER_LEVEL:
control->value = sdev->power_level;
break;
case V4L2_CID_TUNE_ANTENNA_CAPACITOR:
control->value = sdev->antenna_capacitor;
break;
default:
rval = -EINVAL;
};
unlock:
mutex_unlock(&sdev->mutex);
return rval;
}
static int si4713_read_econtrol_integers(struct si4713_device *sdev,
struct v4l2_ext_control *control)
{
s32 rval;
u32 *shadow = NULL, val = 0;
s32 bit = 0, mask = 0;
u16 property = 0;
int mul = 0;
unsigned long *table = NULL;
int size = 0;
rval = si4713_choose_econtrol_action(sdev, control->id, &shadow, &bit,
&mask, &property, &mul, &table, &size);
if (rval < 0)
goto exit;
mutex_lock(&sdev->mutex);
if (sdev->power_state) {
rval = si4713_read_property(sdev, property, &val);
if (rval < 0)
goto unlock;
/* Keep negative values for threshold */
if (control->id == V4L2_CID_AUDIO_COMPRESSION_THRESHOLD)
*shadow = (s16)val;
else if (mask)
*shadow = get_status_bit(val, bit, mask);
else if (mul)
*shadow = val * mul;
else
*shadow = dev_to_usecs(val, table, size);
}
control->value = *shadow;
unlock:
mutex_unlock(&sdev->mutex);
exit:
return rval;
}
/*
* Video4Linux Subdev Interface
*/
/* si4713_s_ext_ctrls - set extended controls value */
static int si4713_s_ext_ctrls(struct v4l2_subdev *sd,
struct v4l2_ext_controls *ctrls)
{
struct si4713_device *sdev = to_si4713_device(sd);
int i;
if (ctrls->ctrl_class != V4L2_CTRL_CLASS_FM_TX)
return -EINVAL;
for (i = 0; i < ctrls->count; i++) {
int err;
switch ((ctrls->controls + i)->id) {
case V4L2_CID_RDS_TX_PS_NAME:
case V4L2_CID_RDS_TX_RADIO_TEXT:
err = si4713_write_econtrol_string(sdev,
ctrls->controls + i);
break;
case V4L2_CID_TUNE_ANTENNA_CAPACITOR:
case V4L2_CID_TUNE_POWER_LEVEL:
err = si4713_write_econtrol_tune(sdev,
ctrls->controls + i);
break;
default:
err = si4713_write_econtrol_integers(sdev,
ctrls->controls + i);
}
if (err < 0) {
ctrls->error_idx = i;
return err;
}
}
return 0;
}
/* si4713_g_ext_ctrls - get extended controls value */
static int si4713_g_ext_ctrls(struct v4l2_subdev *sd,
struct v4l2_ext_controls *ctrls)
{
struct si4713_device *sdev = to_si4713_device(sd);
int i;
if (ctrls->ctrl_class != V4L2_CTRL_CLASS_FM_TX)
return -EINVAL;
for (i = 0; i < ctrls->count; i++) {
int err;
switch ((ctrls->controls + i)->id) {
case V4L2_CID_RDS_TX_PS_NAME:
case V4L2_CID_RDS_TX_RADIO_TEXT:
err = si4713_read_econtrol_string(sdev,
ctrls->controls + i);
break;
case V4L2_CID_TUNE_ANTENNA_CAPACITOR:
case V4L2_CID_TUNE_POWER_LEVEL:
err = si4713_read_econtrol_tune(sdev,
ctrls->controls + i);
break;
default:
err = si4713_read_econtrol_integers(sdev,
ctrls->controls + i);
}
if (err < 0) {
ctrls->error_idx = i;
return err;
}
}
return 0;
}
/* si4713_queryctrl - enumerate control items */
static int si4713_queryctrl(struct v4l2_subdev *sd, struct v4l2_queryctrl *qc)
{
int rval = 0;
switch (qc->id) {
/* User class controls */
case V4L2_CID_AUDIO_MUTE:
rval = v4l2_ctrl_query_fill(qc, 0, 1, 1, DEFAULT_MUTE);
break;
/* FM_TX class controls */
case V4L2_CID_RDS_TX_PI:
rval = v4l2_ctrl_query_fill(qc, 0, 0xFFFF, 1, DEFAULT_RDS_PI);
break;
case V4L2_CID_RDS_TX_PTY:
rval = v4l2_ctrl_query_fill(qc, 0, 31, 1, DEFAULT_RDS_PTY);
break;
case V4L2_CID_RDS_TX_DEVIATION:
rval = v4l2_ctrl_query_fill(qc, 0, MAX_RDS_DEVIATION,
10, DEFAULT_RDS_DEVIATION);
break;
case V4L2_CID_RDS_TX_PS_NAME:
/*
* Report step as 8. From RDS spec, psname
* should be 8. But there are receivers which scroll strings
* sized as 8xN.
*/
rval = v4l2_ctrl_query_fill(qc, 0, MAX_RDS_PS_NAME, 8, 0);
break;
case V4L2_CID_RDS_TX_RADIO_TEXT:
/*
* Report step as 32 (2A block). From RDS spec,
* radio text should be 32 for 2A block. But there are receivers
* which scroll strings sized as 32xN. Setting default to 32.
*/
rval = v4l2_ctrl_query_fill(qc, 0, MAX_RDS_RADIO_TEXT, 32, 0);
break;
case V4L2_CID_AUDIO_LIMITER_ENABLED:
rval = v4l2_ctrl_query_fill(qc, 0, 1, 1, 1);
break;
case V4L2_CID_AUDIO_LIMITER_RELEASE_TIME:
rval = v4l2_ctrl_query_fill(qc, 250, MAX_LIMITER_RELEASE_TIME,
50, DEFAULT_LIMITER_RTIME);
break;
case V4L2_CID_AUDIO_LIMITER_DEVIATION:
rval = v4l2_ctrl_query_fill(qc, 0, MAX_LIMITER_DEVIATION,
10, DEFAULT_LIMITER_DEV);
break;
case V4L2_CID_AUDIO_COMPRESSION_ENABLED:
rval = v4l2_ctrl_query_fill(qc, 0, 1, 1, 1);
break;
case V4L2_CID_AUDIO_COMPRESSION_GAIN:
rval = v4l2_ctrl_query_fill(qc, 0, MAX_ACOMP_GAIN, 1,
DEFAULT_ACOMP_GAIN);
break;
case V4L2_CID_AUDIO_COMPRESSION_THRESHOLD:
rval = v4l2_ctrl_query_fill(qc, MIN_ACOMP_THRESHOLD,
MAX_ACOMP_THRESHOLD, 1,
DEFAULT_ACOMP_THRESHOLD);
break;
case V4L2_CID_AUDIO_COMPRESSION_ATTACK_TIME:
rval = v4l2_ctrl_query_fill(qc, 0, MAX_ACOMP_ATTACK_TIME,
500, DEFAULT_ACOMP_ATIME);
break;
case V4L2_CID_AUDIO_COMPRESSION_RELEASE_TIME:
rval = v4l2_ctrl_query_fill(qc, 100000, MAX_ACOMP_RELEASE_TIME,
100000, DEFAULT_ACOMP_RTIME);
break;
case V4L2_CID_PILOT_TONE_ENABLED:
rval = v4l2_ctrl_query_fill(qc, 0, 1, 1, 1);
break;
case V4L2_CID_PILOT_TONE_DEVIATION:
rval = v4l2_ctrl_query_fill(qc, 0, MAX_PILOT_DEVIATION,
10, DEFAULT_PILOT_DEVIATION);
break;
case V4L2_CID_PILOT_TONE_FREQUENCY:
rval = v4l2_ctrl_query_fill(qc, 0, MAX_PILOT_FREQUENCY,
1, DEFAULT_PILOT_FREQUENCY);
break;
case V4L2_CID_TUNE_PREEMPHASIS:
rval = v4l2_ctrl_query_fill(qc, V4L2_PREEMPHASIS_DISABLED,
V4L2_PREEMPHASIS_75_uS, 1,
V4L2_PREEMPHASIS_50_uS);
break;
case V4L2_CID_TUNE_POWER_LEVEL:
rval = v4l2_ctrl_query_fill(qc, 0, 120, 1, DEFAULT_POWER_LEVEL);
break;
case V4L2_CID_TUNE_ANTENNA_CAPACITOR:
rval = v4l2_ctrl_query_fill(qc, 0, 191, 1, 0);
break;
default:
rval = -EINVAL;
break;
};
return rval;
}
/* si4713_g_ctrl - get the value of a control */
static int si4713_g_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl)
{
struct si4713_device *sdev = to_si4713_device(sd);
int rval = 0;
if (!sdev)
return -ENODEV;
mutex_lock(&sdev->mutex);
if (sdev->power_state) {
rval = si4713_read_property(sdev, SI4713_TX_LINE_INPUT_MUTE,
&sdev->mute);
if (rval < 0)
goto unlock;
}
switch (ctrl->id) {
case V4L2_CID_AUDIO_MUTE:
ctrl->value = get_mute(sdev->mute);
break;
}
unlock:
mutex_unlock(&sdev->mutex);
return rval;
}
/* si4713_s_ctrl - set the value of a control */
static int si4713_s_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl)
{
struct si4713_device *sdev = to_si4713_device(sd);
int rval = 0;
if (!sdev)
return -ENODEV;
switch (ctrl->id) {
case V4L2_CID_AUDIO_MUTE:
if (ctrl->value) {
rval = si4713_set_mute(sdev, ctrl->value);
if (rval < 0)
goto exit;
rval = si4713_set_power_state(sdev, POWER_DOWN);
} else {
rval = si4713_set_power_state(sdev, POWER_UP);
if (rval < 0)
goto exit;
rval = si4713_setup(sdev);
if (rval < 0)
goto exit;
rval = si4713_set_mute(sdev, ctrl->value);
}
break;
}
exit:
return rval;
}
/* si4713_ioctl - deal with private ioctls (only rnl for now) */
long si4713_ioctl(struct v4l2_subdev *sd, unsigned int cmd, void *arg)
{
struct si4713_device *sdev = to_si4713_device(sd);
struct si4713_rnl *rnl = arg;
u16 frequency;
int rval = 0;
if (!arg)
return -EINVAL;
mutex_lock(&sdev->mutex);
switch (cmd) {
case SI4713_IOC_MEASURE_RNL:
frequency = v4l2_to_si4713(rnl->frequency);
if (sdev->power_state) {
/* Set desired measurement frequency */
rval = si4713_tx_tune_measure(sdev, frequency, 0);
if (rval < 0)
goto unlock;
/* get results from tune status */
rval = si4713_update_tune_status(sdev);
if (rval < 0)
goto unlock;
}
rnl->rnl = sdev->tune_rnl;
break;
default:
/* nothing */
rval = -ENOIOCTLCMD;
}
unlock:
mutex_unlock(&sdev->mutex);
return rval;
}
static const struct v4l2_subdev_core_ops si4713_subdev_core_ops = {
.queryctrl = si4713_queryctrl,
.g_ext_ctrls = si4713_g_ext_ctrls,
.s_ext_ctrls = si4713_s_ext_ctrls,
.g_ctrl = si4713_g_ctrl,
.s_ctrl = si4713_s_ctrl,
.ioctl = si4713_ioctl,
};
/* si4713_g_modulator - get modulator attributes */
static int si4713_g_modulator(struct v4l2_subdev *sd, struct v4l2_modulator *vm)
{
struct si4713_device *sdev = to_si4713_device(sd);
int rval = 0;
if (!sdev) {
rval = -ENODEV;
goto exit;
}
if (vm->index > 0) {
rval = -EINVAL;
goto exit;
}
strncpy(vm->name, "FM Modulator", 32);
vm->capability = V4L2_TUNER_CAP_STEREO | V4L2_TUNER_CAP_LOW |
V4L2_TUNER_CAP_RDS;
/* Report current frequency range limits */
vm->rangelow = si4713_to_v4l2(FREQ_RANGE_LOW);
vm->rangehigh = si4713_to_v4l2(FREQ_RANGE_HIGH);
mutex_lock(&sdev->mutex);
if (sdev->power_state) {
u32 comp_en = 0;
rval = si4713_read_property(sdev, SI4713_TX_COMPONENT_ENABLE,
&comp_en);
if (rval < 0)
goto unlock;
sdev->stereo = get_status_bit(comp_en, 1, 1 << 1);
sdev->rds_info.enabled = get_status_bit(comp_en, 2, 1 << 2);
}
/* Report current audio mode: mono or stereo */
if (sdev->stereo)
vm->txsubchans = V4L2_TUNER_SUB_STEREO;
else
vm->txsubchans = V4L2_TUNER_SUB_MONO;
/* Report rds feature status */
if (sdev->rds_info.enabled)
vm->txsubchans |= V4L2_TUNER_SUB_RDS;
else
vm->txsubchans &= ~V4L2_TUNER_SUB_RDS;
unlock:
mutex_unlock(&sdev->mutex);
exit:
return rval;
}
/* si4713_s_modulator - set modulator attributes */
static int si4713_s_modulator(struct v4l2_subdev *sd, struct v4l2_modulator *vm)
{
struct si4713_device *sdev = to_si4713_device(sd);
int rval = 0;
u16 stereo, rds;
u32 p;
if (!sdev)
return -ENODEV;
if (vm->index > 0)
return -EINVAL;
/* Set audio mode: mono or stereo */
if (vm->txsubchans & V4L2_TUNER_SUB_STEREO)
stereo = 1;
else if (vm->txsubchans & V4L2_TUNER_SUB_MONO)
stereo = 0;
else
return -EINVAL;
rds = !!(vm->txsubchans & V4L2_TUNER_SUB_RDS);
mutex_lock(&sdev->mutex);
if (sdev->power_state) {
rval = si4713_read_property(sdev,
SI4713_TX_COMPONENT_ENABLE, &p);
if (rval < 0)
goto unlock;
p = set_bits(p, stereo, 1, 1 << 1);
p = set_bits(p, rds, 2, 1 << 2);
rval = si4713_write_property(sdev,
SI4713_TX_COMPONENT_ENABLE, p);
if (rval < 0)
goto unlock;
}
sdev->stereo = stereo;
sdev->rds_info.enabled = rds;
unlock:
mutex_unlock(&sdev->mutex);
return rval;
}
/* si4713_g_frequency - get tuner or modulator radio frequency */
static int si4713_g_frequency(struct v4l2_subdev *sd, struct v4l2_frequency *f)
{
struct si4713_device *sdev = to_si4713_device(sd);
int rval = 0;
f->type = V4L2_TUNER_RADIO;
mutex_lock(&sdev->mutex);
if (sdev->power_state) {
u16 freq;
u8 p, a, n;
rval = si4713_tx_tune_status(sdev, 0x00, &freq, &p, &a, &n);
if (rval < 0)
goto unlock;
sdev->frequency = freq;
}
f->frequency = si4713_to_v4l2(sdev->frequency);
unlock:
mutex_unlock(&sdev->mutex);
return rval;
}
/* si4713_s_frequency - set tuner or modulator radio frequency */
static int si4713_s_frequency(struct v4l2_subdev *sd, struct v4l2_frequency *f)
{
struct si4713_device *sdev = to_si4713_device(sd);
int rval = 0;
u16 frequency = v4l2_to_si4713(f->frequency);
/* Check frequency range */
if (frequency < FREQ_RANGE_LOW || frequency > FREQ_RANGE_HIGH)
return -EDOM;
mutex_lock(&sdev->mutex);
if (sdev->power_state) {
rval = si4713_tx_tune_freq(sdev, frequency);
if (rval < 0)
goto unlock;
frequency = rval;
rval = 0;
}
sdev->frequency = frequency;
f->frequency = si4713_to_v4l2(frequency);
unlock:
mutex_unlock(&sdev->mutex);
return rval;
}
static const struct v4l2_subdev_tuner_ops si4713_subdev_tuner_ops = {
.g_frequency = si4713_g_frequency,
.s_frequency = si4713_s_frequency,
.g_modulator = si4713_g_modulator,
.s_modulator = si4713_s_modulator,
};
static const struct v4l2_subdev_ops si4713_subdev_ops = {
.core = &si4713_subdev_core_ops,
.tuner = &si4713_subdev_tuner_ops,
};
/*
* I2C driver interface
*/
/* si4713_probe - probe for the device */
static int si4713_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
struct si4713_device *sdev;
int rval;
sdev = kzalloc(sizeof *sdev, GFP_KERNEL);
if (!sdev) {
dev_err(&client->dev, "Failed to alloc video device.\n");
rval = -ENOMEM;
goto exit;
}
sdev->platform_data = client->dev.platform_data;
if (!sdev->platform_data) {
v4l2_err(&sdev->sd, "No platform data registered.\n");
rval = -ENODEV;
goto free_sdev;
}
v4l2_i2c_subdev_init(&sdev->sd, client, &si4713_subdev_ops);
mutex_init(&sdev->mutex);
init_completion(&sdev->work);
if (client->irq) {
rval = request_irq(client->irq,
si4713_handler, IRQF_TRIGGER_FALLING | IRQF_DISABLED,
client->name, sdev);
if (rval < 0) {
v4l2_err(&sdev->sd, "Could not request IRQ\n");
goto free_sdev;
}
v4l2_dbg(1, debug, &sdev->sd, "IRQ requested.\n");
} else {
v4l2_warn(&sdev->sd, "IRQ not configured. Using timeouts.\n");
}
rval = si4713_initialize(sdev);
if (rval < 0) {
v4l2_err(&sdev->sd, "Failed to probe device information.\n");
goto free_irq;
}
return 0;
free_irq:
if (client->irq)
free_irq(client->irq, sdev);
free_sdev:
kfree(sdev);
exit:
return rval;
}
/* si4713_remove - remove the device */
static int si4713_remove(struct i2c_client *client)
{
struct v4l2_subdev *sd = i2c_get_clientdata(client);
struct si4713_device *sdev = to_si4713_device(sd);
if (sdev->power_state)
si4713_set_power_state(sdev, POWER_DOWN);
if (client->irq > 0)
free_irq(client->irq, sdev);
v4l2_device_unregister_subdev(sd);
kfree(sdev);
return 0;
}
/* si4713_i2c_driver - i2c driver interface */
static const struct i2c_device_id si4713_id[] = {
{ "si4713" , 0 },
{ },
};
MODULE_DEVICE_TABLE(i2c, si4713_id);
static struct i2c_driver si4713_i2c_driver = {
.driver = {
.name = "si4713",
},
.probe = si4713_probe,
.remove = si4713_remove,
.id_table = si4713_id,
};
/* Module Interface */
static int __init si4713_module_init(void)
{
return i2c_add_driver(&si4713_i2c_driver);
}
static void __exit si4713_module_exit(void)
{
i2c_del_driver(&si4713_i2c_driver);
}
module_init(si4713_module_init);
module_exit(si4713_module_exit);
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