--- /dev/null
+/*
+ * 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 <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) {
+ 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) {
+ 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);
+
projects / firefly-linux-kernel-4.4.55.git / commitdiff