On Friday 24 July 2009 18:37:26 Eduardo Valentin wrote:
> This patch adds files to control si4713 devices.
> Internal functions to control device properties
> and initialization procedures are into these files.
> Also, a v4l2 subdev interface is also exported.
> This way other drivers can use this as v4l2 i2c subdevice.
>
> Signed-off-by: Eduardo Valentin <eduardo.valentin@xxxxxxxxx>
> ---
> linux/drivers/media/radio/si4713-i2c.c | 2034 ++++++++++++++++++++++++++++++++
> linux/drivers/media/radio/si4713-i2c.h | 228 ++++
> linux/include/media/si4713.h | 49 +
> 3 files changed, 2311 insertions(+), 0 deletions(-)
> create mode 100644 linux/drivers/media/radio/si4713-i2c.c
> create mode 100644 linux/drivers/media/radio/si4713-i2c.h
> create mode 100644 linux/include/media/si4713.h
>
> diff --git a/linux/drivers/media/radio/si4713-i2c.c b/linux/drivers/media/radio/si4713-i2c.c
> new file mode 100644
> index 0000000..4949b41
> --- /dev/null
> +++ b/linux/drivers/media/radio/si4713-i2c.c
> @@ -0,0 +1,2034 @@
> +/*
> + * drivers/media/radio/si4713-i2c.c
> + *
> + * Silicon Labs Si4713 FM Radio Transmitter I2C commands.
> + *
> + * Copyright (c) 2009 Nokia Corporation
> + * Contact: Eduardo Valentin <eduardo.valentin@xxxxxxxxx>
> + *
> + * 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 <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@xxxxxxxxx>");
> +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 "Si4713 "
> +#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
> + * @intstatus: returns current interrupt status
> + * @cbavail: returns the number of available circular buffer blocks.
> + * @cbused: returns the number of used circular buffer blocks.
> + * @fifoavail: returns the number of available fifo buffer blocks.
> + * @fifoused: returns the number of used fifo buffer blocks.
> + */
> +static int si4713_tx_rds_buff(struct si4713_device *sdev, u8 mode, u16 rdsb,
> + u16 rdsc, u16 rdsd, u8 *intstatus, u8 *cbavail,
> + u8 *cbused, u8 *fifoavail, u8 *fifoused)
> +{
> + 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]);
> + *intstatus = val[1];
> + *cbavail = val[2];
> + *cbused = val[3];
> + *fifoavail = val[4];
> + *fifoused = val[5];
> + 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__, *intstatus,
> + *cbavail, *cbused, *fifoavail, *fifoused);
> + }
> +
> + 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;
> + u8 *tmp;
> +
> + if (!strlen(ps_name))
> + return -EINVAL;
> +
> + tmp = kzalloc(MAX_RDS_PS_NAME + 1, GFP_KERNEL);
> + if (!tmp)
> + return -ENOMEM;
> +
> + strncpy(tmp, ps_name, MAX_RDS_PS_NAME);
> +
> + 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)),
> + tmp + i);
> + if (rval < 0)
> + goto unlock;
> + }
> +
> + /* Setup the size to be sent */
> + len = strlen(tmp) - 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, tmp, MAX_RDS_PS_NAME);
> +
> +unlock:
> + mutex_unlock(&sdev->mutex);
> + kfree(tmp);
> + return rval;
> +}
> +
> +static int si4713_set_rds_radio_text(struct si4713_device *sdev,
> + char *radio_text)
> +{
> + int rval = 0, i;
> + u16 t_index = 0;
> + u8 s, a, u, fa, fu, b_index = 0, cr_inserted = 0;
> + u8 *tmp;
> +
> + if (!strlen(radio_text))
> + return -EINVAL;
> +
> + tmp = kzalloc(MAX_RDS_RADIO_TEXT + 1, GFP_KERNEL);
> + if (!tmp)
> + return -ENOMEM;
> +
> + strncpy(tmp, radio_text, MAX_RDS_RADIO_TEXT);
> +
> + mutex_lock(&sdev->mutex);
> +
> + if (sdev->power_state) {
> + rval = si4713_tx_rds_buff(sdev, RDS_BLOCK_CLEAR, 0, 0, 0,
> + &s, &a, &u, &fa, &fu);
> + if (rval < 0)
> + goto unlock;
> + 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 (!tmp[t_index + i] ||
> + tmp[t_index + i] == \
> + RDS_CARRIAGE_RETURN) {
> + tmp[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(tmp[t_index],
> + tmp[t_index + 1]),
> + compose_u16(tmp[t_index + 2],
> + tmp[t_index + 3]),
> + &s, &a, &u, &fa, &fu);
> + if (rval < 0)
> + goto unlock;
> +
> + t_index += RDS_RADIOTEXT_BLK_SIZE;
> +
> + if (cr_inserted)
> + break;
> + } while (u < a);
> + }
> +
> + strncpy(sdev->rds_info.radio_text, tmp, MAX_RDS_RADIO_TEXT);
> +
> +unlock:
> + mutex_unlock(&sdev->mutex);
> + kfree(tmp);
> + 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_FM_TX_PREEMPHASIS:
> + *property = SI4713_TX_PREEMPHASIS;
> + *table = preemphasis_values;
> + *size = ARRAY_SIZE(preemphasis_values);
> + *shadow = &sdev->preemphasis;
> + break;
> +
> + default:
> + rval = -EINVAL;
> + };
> +
> + return rval;
> +}
> +
> +/* write string property */
> +static int si4713_write_econtrol_string(struct si4713_device *sdev,
> + struct v4l2_ext_control *control)
> +{
> + char ps_name[MAX_RDS_PS_NAME + 1];
> + char radio_text[MAX_RDS_RADIO_TEXT + 1];
> + int size;
> + s32 rval = 0;
> +
> + switch (control->id) {
> + case V4L2_CID_RDS_TX_PS_NAME:
> + size = control->length - 1;
> + if (size > MAX_RDS_PS_NAME)
> + size = MAX_RDS_PS_NAME;
> + rval = copy_from_user(ps_name, control->string, size);
> + if (rval < 0)
> + goto exit;
> + ps_name[size] = '\0';
> + rval = si4713_set_rds_ps_name(sdev, ps_name);
> + break;
> +
> + case V4L2_CID_RDS_TX_RADIO_TEXT:
> + size = control->length - 1;
> + if (size > MAX_RDS_RADIO_TEXT)
> + size = MAX_RDS_RADIO_TEXT;
> + rval = copy_from_user(radio_text, control->string, size);
> + if (rval < 0)
> + goto exit;
> + radio_text[size] = '\0';
> + rval = si4713_set_rds_radio_text(sdev, radio_text);
> + break;
> +
> + default:
> + rval = -EINVAL;
> + break;
> + };
> +
> +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;
> +
> + 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);
> + return rval;
> +}
> +
> +static int si4713_queryctrl(struct v4l2_subdev *sd, struct v4l2_queryctrl *qc);
> +
> +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 = -EDOM;
> +
> +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_FM_TX_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->length) {
> + control->length = strlen(sdev->rds_info.ps_name) + 1;
I recommend setting length to the actual maximum 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->length) {
> + control->length = strlen(sdev->rds_info.radio_text) + 1;
Ditto.
> + 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;
> +
> + err = si4713_write_econtrol_integers(sdev, ctrls->controls + i);
> + if (err < 0)
> + err = si4713_write_econtrol_string(sdev,
> + ctrls->controls + i);
> + if (err < 0)
> + err = si4713_write_econtrol_tune(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;
> +
> + err = si4713_read_econtrol_tune(sdev, ctrls->controls + i);
> + if (err < 0)
> + err = si4713_read_econtrol_string(sdev,
> + ctrls->controls + i);
> + if (err < 0)
> + 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:
> + rval = v4l2_ctrl_query_fill(qc, 0, MAX_RDS_PS_NAME + 1, 0, 0);
> + break;
> + case V4L2_CID_RDS_TX_RADIO_TEXT:
> + rval = v4l2_ctrl_query_fill(qc, 0, MAX_RDS_RADIO_TEXT + 1,
> + 0, 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_FM_TX_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) {
> + rval = -ENODEV;
> + goto exit;
> + }
> +
> + if (vm->index > 0) {
> + rval = -EINVAL;
> + goto exit;
> + }
> +
> + /* 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
> + rval = -EINVAL;
> + if (rval < 0)
> + goto exit;
> +
> + 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);
> +exit:
> + 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) {
> + v4l2_err(&sdev->sd, "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);
> +
> diff --git a/linux/drivers/media/radio/si4713-i2c.h b/linux/drivers/media/radio/si4713-i2c.h
> new file mode 100644
> index 0000000..5462004
> --- /dev/null
> +++ b/linux/drivers/media/radio/si4713-i2c.h
> @@ -0,0 +1,228 @@
> +/*
> + * drivers/media/radio/si4713-i2c.h
> + *
> + * Property and commands definitions for Si4713 radio transmitter chip.
> + *
> + * Copyright (c) 2008 Instituto Nokia de Tecnologia - INdT
> + * Contact: Eduardo Valentin <eduardo.valentin@xxxxxxxxx>
> + *
> + * This file is licensed under the terms of the GNU General Public License
> + * version 2. This program is licensed "as is" without any warranty of any
> + * kind, whether express or implied.
> + *
> + */
> +
> +#ifndef SI4713_I2C_H
> +#define SI4713_I2C_H
> +
> +#include <media/v4l2-subdev.h>
> +#include <media/si4713.h>
> +
> +#define SI4713_PRODUCT_NUMBER 0x0D
> +
> +/* Command Timeouts */
> +#define DEFAULT_TIMEOUT 500
> +#define TIMEOUT_SET_PROPERTY 20
> +#define TIMEOUT_TX_TUNE_POWER 30000
> +#define TIMEOUT_TX_TUNE 110000
> +#define TIMEOUT_POWER_UP 200000
> +
> +/*
> + * Command and its arguments definitions
> + */
> +#define SI4713_PWUP_CTSIEN (1<<7)
> +#define SI4713_PWUP_GPO2OEN (1<<6)
> +#define SI4713_PWUP_PATCH (1<<5)
> +#define SI4713_PWUP_XOSCEN (1<<4)
> +#define SI4713_PWUP_FUNC_TX 0x02
> +#define SI4713_PWUP_FUNC_PATCH 0x0F
> +#define SI4713_PWUP_OPMOD_ANALOG 0x50
> +#define SI4713_PWUP_OPMOD_DIGITAL 0x0F
> +#define SI4713_PWUP_NARGS 2
> +#define SI4713_PWUP_NRESP 1
> +#define SI4713_CMD_POWER_UP 0x01
> +
> +#define SI4713_GETREV_NRESP 9
> +#define SI4713_CMD_GET_REV 0x10
> +
> +#define SI4713_PWDN_NRESP 1
> +#define SI4713_CMD_POWER_DOWN 0x11
> +
> +#define SI4713_SET_PROP_NARGS 5
> +#define SI4713_SET_PROP_NRESP 1
> +#define SI4713_CMD_SET_PROPERTY 0x12
> +
> +#define SI4713_GET_PROP_NARGS 3
> +#define SI4713_GET_PROP_NRESP 4
> +#define SI4713_CMD_GET_PROPERTY 0x13
> +
> +#define SI4713_GET_STATUS_NRESP 1
> +#define SI4713_CMD_GET_INT_STATUS 0x14
> +
> +#define SI4713_CMD_PATCH_ARGS 0x15
> +#define SI4713_CMD_PATCH_DATA 0x16
> +
> +#define SI4713_MAX_FREQ 10800
> +#define SI4713_MIN_FREQ 7600
> +#define SI4713_TXFREQ_NARGS 3
> +#define SI4713_TXFREQ_NRESP 1
> +#define SI4713_CMD_TX_TUNE_FREQ 0x30
> +
> +#define SI4713_MAX_POWER 120
> +#define SI4713_MIN_POWER 88
> +#define SI4713_MAX_ANTCAP 191
> +#define SI4713_MIN_ANTCAP 0
> +#define SI4713_TXPWR_NARGS 4
> +#define SI4713_TXPWR_NRESP 1
> +#define SI4713_CMD_TX_TUNE_POWER 0x31
> +
> +#define SI4713_TXMEA_NARGS 4
> +#define SI4713_TXMEA_NRESP 1
> +#define SI4713_CMD_TX_TUNE_MEASURE 0x32
> +
> +#define SI4713_INTACK_MASK 0x01
> +#define SI4713_TXSTATUS_NARGS 1
> +#define SI4713_TXSTATUS_NRESP 8
> +#define SI4713_CMD_TX_TUNE_STATUS 0x33
> +
> +#define SI4713_OVERMOD_BIT (1 << 2)
> +#define SI4713_IALH_BIT (1 << 1)
> +#define SI4713_IALL_BIT (1 << 0)
> +#define SI4713_ASQSTATUS_NARGS 1
> +#define SI4713_ASQSTATUS_NRESP 5
> +#define SI4713_CMD_TX_ASQ_STATUS 0x34
> +
> +#define SI4713_RDSBUFF_MODE_MASK 0x87
> +#define SI4713_RDSBUFF_NARGS 7
> +#define SI4713_RDSBUFF_NRESP 6
> +#define SI4713_CMD_TX_RDS_BUFF 0x35
> +
> +#define SI4713_RDSPS_PSID_MASK 0x1F
> +#define SI4713_RDSPS_NARGS 5
> +#define SI4713_RDSPS_NRESP 1
> +#define SI4713_CMD_TX_RDS_PS 0x36
> +
> +#define SI4713_CMD_GPO_CTL 0x80
> +#define SI4713_CMD_GPO_SET 0x81
> +
> +/*
> + * Bits from status response
> + */
> +#define SI4713_CTS (1<<7)
> +#define SI4713_ERR (1<<6)
> +#define SI4713_RDS_INT (1<<2)
> +#define SI4713_ASQ_INT (1<<1)
> +#define SI4713_STC_INT (1<<0)
> +
> +/*
> + * Property definitions
> + */
> +#define SI4713_GPO_IEN 0x0001
> +#define SI4713_DIG_INPUT_FORMAT 0x0101
> +#define SI4713_DIG_INPUT_SAMPLE_RATE 0x0103
> +#define SI4713_REFCLK_FREQ 0x0201
> +#define SI4713_REFCLK_PRESCALE 0x0202
> +#define SI4713_TX_COMPONENT_ENABLE 0x2100
> +#define SI4713_TX_AUDIO_DEVIATION 0x2101
> +#define SI4713_TX_PILOT_DEVIATION 0x2102
> +#define SI4713_TX_RDS_DEVIATION 0x2103
> +#define SI4713_TX_LINE_INPUT_LEVEL 0x2104
> +#define SI4713_TX_LINE_INPUT_MUTE 0x2105
> +#define SI4713_TX_PREEMPHASIS 0x2106
> +#define SI4713_TX_PILOT_FREQUENCY 0x2107
> +#define SI4713_TX_ACOMP_ENABLE 0x2200
> +#define SI4713_TX_ACOMP_THRESHOLD 0x2201
> +#define SI4713_TX_ACOMP_ATTACK_TIME 0x2202
> +#define SI4713_TX_ACOMP_RELEASE_TIME 0x2203
> +#define SI4713_TX_ACOMP_GAIN 0x2204
> +#define SI4713_TX_LIMITER_RELEASE_TIME 0x2205
> +#define SI4713_TX_ASQ_INTERRUPT_SOURCE 0x2300
> +#define SI4713_TX_ASQ_LEVEL_LOW 0x2301
> +#define SI4713_TX_ASQ_DURATION_LOW 0x2302
> +#define SI4713_TX_ASQ_LEVEL_HIGH 0x2303
> +#define SI4713_TX_ASQ_DURATION_HIGH 0x2304
> +#define SI4713_TX_RDS_INTERRUPT_SOURCE 0x2C00
> +#define SI4713_TX_RDS_PI 0x2C01
> +#define SI4713_TX_RDS_PS_MIX 0x2C02
> +#define SI4713_TX_RDS_PS_MISC 0x2C03
> +#define SI4713_TX_RDS_PS_REPEAT_COUNT 0x2C04
> +#define SI4713_TX_RDS_PS_MESSAGE_COUNT 0x2C05
> +#define SI4713_TX_RDS_PS_AF 0x2C06
> +#define SI4713_TX_RDS_FIFO_SIZE 0x2C07
> +
> +#define PREEMPHASIS_USA 75
> +#define PREEMPHASIS_EU 50
> +#define PREEMPHASIS_DISABLED 0
> +#define FMPE_USA 0x00
> +#define FMPE_EU 0x01
> +#define FMPE_DISABLED 0x02
> +
> +#define POWER_UP 0x01
> +#define POWER_DOWN 0x00
> +
> +struct rds_info {
> + u32 pi;
> +#define MAX_RDS_PTY 31
> + u32 pty;
> +#define MAX_RDS_DEVIATION 90000
> + u32 deviation;
> +#define MAX_RDS_PS_NAME 96
> + u8 ps_name[MAX_RDS_PS_NAME + 1];
> +#define MAX_RDS_RADIO_TEXT 384
I'm surprised at these MAX string lengths. Looking at the RDS standard it
seems that the max length for the PS_NAME is 8 and for RADIO_TEXT it is
either 32 (2A group) or 64 (2B group). I don't know which group the si4713
uses.
Can you clarify how this is used?
Regards,
Hans
> + u8 radio_text[MAX_RDS_RADIO_TEXT + 1];
> + u32 enabled;
> +};
> +
> +struct limiter_info {
> +#define MAX_LIMITER_RELEASE_TIME 102390
> + u32 release_time;
> +#define MAX_LIMITER_DEVIATION 90000
> + u32 deviation;
> + u32 enabled;
> +};
> +
> +struct pilot_info {
> +#define MAX_PILOT_DEVIATION 90000
> + u32 deviation;
> +#define MAX_PILOT_FREQUENCY 19000
> + u32 frequency;
> + u32 enabled;
> +};
> +
> +struct acomp_info {
> +#define MAX_ACOMP_RELEASE_TIME 1000000
> + u32 release_time;
> +#define MAX_ACOMP_ATTACK_TIME 5000
> + u32 attack_time;
> +#define MAX_ACOMP_THRESHOLD 0
> +#define MIN_ACOMP_THRESHOLD (-40)
> + s32 threshold;
> +#define MAX_ACOMP_GAIN 20
> + u32 gain;
> + u32 enabled;
> +};
> +
> +/*
> + * si4713_device - private data
> + */
> +struct si4713_device {
> + /* v4l2_subdev and i2c reference (v4l2_subdev priv data) */
> + struct v4l2_subdev sd;
> + /* private data structures */
> + struct mutex mutex;
> + struct completion work;
> + struct si4713_platform_data *platform_data;
> + struct rds_info rds_info;
> + struct limiter_info limiter_info;
> + struct pilot_info pilot_info;
> + struct acomp_info acomp_info;
> + u32 frequency;
> + u32 preemphasis;
> + u32 mute;
> + u32 power_level;
> + u32 power_state;
> + u32 antenna_capacitor;
> + u32 stereo;
> + u32 tune_rnl;
> +};
> +#endif /* ifndef SI4713_I2C_H */
> diff --git a/linux/include/media/si4713.h b/linux/include/media/si4713.h
> new file mode 100644
> index 0000000..99850a5
> --- /dev/null
> +++ b/linux/include/media/si4713.h
> @@ -0,0 +1,49 @@
> +/*
> + * include/media/si4713.h
> + *
> + * Board related data definitions for Si4713 i2c device driver.
> + *
> + * Copyright (c) 2009 Nokia Corporation
> + * Contact: Eduardo Valentin <eduardo.valentin@xxxxxxxxx>
> + *
> + * This file is licensed under the terms of the GNU General Public License
> + * version 2. This program is licensed "as is" without any warranty of any
> + * kind, whether express or implied.
> + *
> + */
> +
> +#ifndef SI4713_H
> +#define SI4713_H
> +
> +/* The SI4713 I2C sensor chip has a fixed slave address of 0xc6 or 0x22. */
> +#define SI4713_I2C_ADDR_BUSEN_HIGH 0x63
> +#define SI4713_I2C_ADDR_BUSEN_LOW 0x11
> +
> +/*
> + * Platform dependent definition
> + */
> +struct si4713_platform_data {
> + /* Set power state, zero is off, non-zero is on. */
> + int (*set_power)(int power);
> +};
> +
> +/*
> + * Structure to query for Received Noise Level (RNL).
> + */
> +struct si4713_rnl {
> + __u32 index; /* modulator index */
> + __u32 frequency; /* frequency to peform rnl measurement */
> + __s32 rnl; /* result of measurement in dBuV */
> + __u32 reserved[4]; /* drivers and apps must init this to 0 */
> +};
> +
> +/*
> + * This is the ioctl number to query for rnl. Users must pass a
> + * struct si4713_rnl pointer specifying desired frequency in 'frequency' field
> + * following driver capabilities (i.e V4L2_TUNER_CAP_LOW).
> + * Driver must return measured value in the same struture, filling 'rnl' field.
> + */
> +#define SI4713_IOC_MEASURE_RNL _IOWR('V', BASE_VIDIOC_PRIVATE + 0, \
> + struct si4713_rnl)
> +
> +#endif /* ifndef SI4713_H*/
--
Hans Verkuil - video4linux developer - sponsored by TANDBERG Telecom
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