From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from smtp.nokia.com ([192.100.122.233]:28745 "EHLO mgw-mx06.nokia.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1761404AbZFLRgU (ORCPT ); Fri, 12 Jun 2009 13:36:20 -0400 From: Eduardo Valentin To: "ext Hans Verkuil" , "ext Mauro Carvalho Chehab" Cc: "Nurkkala Eero.An (EXT-Offcode/Oulu)" , "Aaltonen Matti.J (Nokia-D/Tampere)" , "ext Douglas Schilling Landgraf" , Linux-Media , Eduardo Valentin Subject: [PATCHv7 7/9] FMTx: si4713: Add files to handle si4713 i2c device Date: Fri, 12 Jun 2009 20:30:38 +0300 Message-Id: <1244827840-886-8-git-send-email-eduardo.valentin@nokia.com> In-Reply-To: <1244827840-886-7-git-send-email-eduardo.valentin@nokia.com> References: <1244827840-886-1-git-send-email-eduardo.valentin@nokia.com> <1244827840-886-2-git-send-email-eduardo.valentin@nokia.com> <1244827840-886-3-git-send-email-eduardo.valentin@nokia.com> <1244827840-886-4-git-send-email-eduardo.valentin@nokia.com> <1244827840-886-5-git-send-email-eduardo.valentin@nokia.com> <1244827840-886-6-git-send-email-eduardo.valentin@nokia.com> <1244827840-886-7-git-send-email-eduardo.valentin@nokia.com> Sender: linux-media-owner@vger.kernel.org List-ID: 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 --- linux/drivers/media/radio/si4713-i2c.c | 2813 ++++++++++++++++++++++++++++++++ linux/drivers/media/radio/si4713-i2c.h | 226 +++ 2 files changed, 3039 insertions(+), 0 deletions(-) create mode 100644 linux/drivers/media/radio/si4713-i2c.c create mode 100644 linux/drivers/media/radio/si4713-i2c.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..f640d33 --- /dev/null +++ b/linux/drivers/media/radio/si4713-i2c.c @@ -0,0 +1,2813 @@ +/* + * drivers/media/radio/si4713-i2c.c + * + * Silicon Labs Si4713 FM Radio Transmitter I2C commands. + * + * Copyright (c) 2009 Nokia Corporation + * Contact: Eduardo Valentin + * + * 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 +#include +#include +#include +#include +#include +#include + +#include "si4713-i2c.h" + +#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_TUNE_RSSI 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 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 enable_rds(p) (p | (1 << 2)) +#define disable_rds(p) (p & ~(1 << 2)) +#define get_rds_status(p) ((p >> 2) & 0x01) + +#define enable_stereo(p) (p | (1 << 1)) +#define disable_stereo(p) (p & ~(1 << 1)) +#define get_stereo_status(p) ((p >> 1) & 0x01) + +#define enable_limiter(p) (p | (1 << 1)) +#define disable_limiter(p) (p & ~(1 << 1)) +#define get_limiter_status(p) ((p >> 1) & 0x01) + +#define enable_pilot(p) (p | (1 << 0)) +#define disable_pilot(p) (p & ~(1 << 0)) +#define get_pilot_status(p) ((p >> 0) & 0x01) + +#define enable_acomp(p) (p | (1 << 0)) +#define disable_acomp(p) (p & ~(1 << 0)) +#define get_acomp_status(p) ((p >> 0) & 0x01) +#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) +#define set_pty(v, pty) ((v & 0xFC1F) | (pty << 5)) +#define get_pty(v) ((v >> 5) & 0x1F) + +#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]); \ + dev_dbg(device, "%s:%s\n", message, str); \ + } +#else +#define DBG_BUFFER(device, message, buffer, size) +#endif + + +/* + * Values for limiter release time + * device release + * value time (us) + */ +static unsigned long const 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 + * device release + * value time (us) + */ +static unsigned long const acomp_rtimes[] = { + 0, 100000, + 1, 200000, + 2, 350000, + 3, 525000, + 4, 1000000, +}; + +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; + struct i2c_client *client = v4l2_get_subdevdata(&sdev->sd); + + dev_dbg(&client->dev, "IRQ called, signaling completion work\n"); + 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(&client->dev, "Parameters", data1, argn + 1); + + err = i2c_master_send(client, data1, argn + 1); + if (err != argn + 1) { + dev_err(&client->dev, "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)) + dev_dbg(&client->dev, "Device took too much time.\n"); + + /* Then get the response */ + err = i2c_master_recv(client, response, respn); + if (err != respn) { + dev_err(&client->dev, + "Error while reading response for command 0x%02x\n", + command); + return (err > 0) ? -EIO : err; + } + + DBG_BUFFER(&client->dev, "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 + */ +static int si4713_read_property(struct si4713_device *sdev, u16 prop) +{ + struct i2c_client *client = v4l2_get_subdevdata(&sdev->sd); + int err; + u8 val[SI4713_GET_PROP_NRESP]; + /* + * REVISIT: From Programming Manual + * .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; + + dev_dbg(&client->dev, "Status from read prop: 0x%02x\n", val[0]); + + return compose_u16(val[2], val[3]); +} + +/* + * 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) +{ + struct i2c_client *client = v4l2_get_subdevdata(&sdev->sd); + int rval; + u8 resp[SI4713_SET_PROP_NRESP]; + /* + * REVISIT: From Programming Manual + * .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; + + dev_dbg(&client->dev, "Status from write prop: 0x%02x\n", + 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) +{ + struct i2c_client *client = v4l2_get_subdevdata(&sdev->sd); + int err; + u8 resp[SI4713_PWUP_NRESP]; + /* + * REVISIT: From Programming Manual + * .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) { + dev_dbg(&client->dev, "Powerup response: 0x%02x\n", + resp[0]); + dev_dbg(&client->dev, "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) +{ + struct i2c_client *client = v4l2_get_subdevdata(&sdev->sd); + 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) { + dev_dbg(&client->dev, "Power down response: 0x%02x\n", + resp[0]); + dev_dbg(&client->dev, "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 + */ +#define pr_revision(devicep, buffer) \ + dev_info(devicep, "Detected %s (0x%02x) Firmware: %d.%d" \ + " Patch ID: %02x:%02x Component: %d.%d" \ + " Chip Rev.: %s\n", \ + buffer[1] == SI4713_PRODUCT_NUMBER ? "Si4713" : "",\ + buffer[1], \ + buffer[2] & 0xF, buffer[3] & 0xF, \ + buffer[4], buffer[5], \ + buffer[6] & 0xF, buffer[7] & 0xF, \ + buffer[8] == 0x41 ? "revA" : "unknown") +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) { + pr_revision(&client->dev, resp); + } else { + dev_err(&client->dev, "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) +{ + struct i2c_client *client = v4l2_get_subdevdata(&sdev->sd); + int err; + u8 resp[SI4713_GET_STATUS_NRESP]; + + /* Wait response from STC interrupt */ + if (!wait_for_completion_timeout(&sdev->work, + usecs_to_jiffies(TIMEOUT_TX_TUNE) + 1)) + dev_dbg(&client->dev, "Device took too much time.\n"); + + /* 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; + + dev_dbg(&client->dev, "Status bits: 0x%02x\n", 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) +{ + struct i2c_client *client = v4l2_get_subdevdata(&sdev->sd); + int err; + u8 val[SI4713_TXFREQ_NRESP]; + /* + * REVISIT: From Programming Manual + * .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; + + dev_dbg(&client->dev, "Status from tx tune freq: 0x%02x\n", + 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) +{ + struct i2c_client *client = v4l2_get_subdevdata(&sdev->sd); + int err; + u8 val[SI4713_TXPWR_NRESP]; + /* + * REVISIT: From Programming Manual + * .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; + + dev_dbg(&client->dev, "Status from tx tune power: 0x%02x\n", + 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) +{ + struct i2c_client *client = v4l2_get_subdevdata(&sdev->sd); + int err; + u8 val[SI4713_TXMEA_NRESP]; + /* + * REVISIT: From Programming Manual + * .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_rssi = DEFAULT_TUNE_RSSI; + + 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; + + dev_dbg(&client->dev, "Status from tx tune measure: 0x%02x\n", + 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) +{ + struct i2c_client *client = v4l2_get_subdevdata(&sdev->sd); + int err; + u8 val[SI4713_TXSTATUS_NRESP]; + /* + * REVISIT: From Programming Manual + * .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) { + dev_dbg(&client->dev, + "Status from tx tune status: 0x%02x\n", val[0]); + *frequency = compose_u16(val[2], val[3]); + sdev->frequency = *frequency; + *power = val[5]; + *antcap = val[6]; + *noise = val[7]; + dev_dbg(&client->dev, "Tune status: %d x 10 kHz " + "(power %d, antcap %d, rnl %d)\n", + *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) +{ + struct i2c_client *client = v4l2_get_subdevdata(&sdev->sd); + 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) { + dev_dbg(&client->dev, + "Status from tx rds buff: 0x%02x\n", val[0]); + *intstatus = val[1]; + *cbavail = val[2]; + *cbused = val[3]; + *fifoavail = val[4]; + *fifoused = val[5]; + dev_dbg(&client->dev, "rds buffer status: interrupts" + " 0x%02x cb avail: %d cb used %d fifo avail" + " %d fifo used %d\n", *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) +{ + struct i2c_client *client = v4l2_get_subdevdata(&sdev->sd); + 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; + + dev_dbg(&client->dev, "Status from tx rds ps: 0x%02x\n", + val[0]); + + return err; +} + +/* TODO: Remove getters and setters functions and simplify driver code */ + +/* getters */ +/* tx_tune_status */ +static int si4713_get_power_level(struct si4713_device *sdev) +{ + int rval; + u16 f = 0; + u8 p, a, n; + + mutex_lock(&sdev->mutex); + + if (sdev->power_state) { + rval = si4713_tx_tune_status(sdev, 0x00, &f, &p, &a, &n); + + if (rval < 0) + goto unlock; + + sdev->power_level = p; + } + + rval = sdev->power_level; + +unlock: + mutex_unlock(&sdev->mutex); + return rval; +} + +static int si4713_get_antenna_capacitor(struct si4713_device *sdev) +{ + int rval = 0; + u16 f = 0; + u8 p, a, n; + + mutex_lock(&sdev->mutex); + + if (sdev->power_state) { + rval = si4713_tx_tune_status(sdev, 0x00, &f, &p, &a, &n); + + if (rval < 0) + goto unlock; + + sdev->antenna_capacitor = a; + } + + rval = sdev->antenna_capacitor; + +unlock: + mutex_unlock(&sdev->mutex); + return rval; +} + +static int si4713_get_tune_measure(struct si4713_device *sdev) +{ + int rval; + u16 f = 0; + u8 p, a, n; + + mutex_lock(&sdev->mutex); + + if (sdev->power_state) { + rval = si4713_tx_tune_status(sdev, 0x00, &f, &p, &a, &n); + + if (rval < 0) + goto unlock; + + sdev->tune_rssi = n; + } + + rval = sdev->tune_rssi; + +unlock: + mutex_unlock(&sdev->mutex); + return rval; +} + +static int si4713_get_frequency(struct si4713_device *sdev) +{ + int rval; + u16 f = 0; + u8 p, a, n; + + mutex_lock(&sdev->mutex); + + if (sdev->power_state) { + rval = si4713_tx_tune_status(sdev, 0x00, &f, &p, &a, &n); + + if (rval < 0) + goto unlock; + + sdev->frequency = f; + } + + rval = sdev->frequency; + +unlock: + mutex_unlock(&sdev->mutex); + return rval; +} + +/* read_property */ +static int si4713_get_mute(struct si4713_device *sdev) +{ + int rval; + + mutex_lock(&sdev->mutex); + + if (sdev->power_state) { + rval = si4713_read_property(sdev, SI4713_TX_LINE_INPUT_MUTE); + + if (rval < 0) + goto unlock; + + sdev->mute = rval; + } + + rval = get_mute(sdev->mute); + +unlock: + mutex_unlock(&sdev->mutex); + return rval; +} + +static int si4713_get_rds_pi(struct si4713_device *sdev) +{ + int rval; + + mutex_lock(&sdev->mutex); + + if (sdev->power_state) { + rval = si4713_read_property(sdev, SI4713_TX_RDS_PI); + + if (rval < 0) + goto unlock; + + sdev->rds_info.pi = rval; + } + + rval = sdev->rds_info.pi; + +unlock: + mutex_unlock(&sdev->mutex); + return rval; +} + +static int si4713_get_rds_pty(struct si4713_device *sdev) +{ + int rval; + + mutex_lock(&sdev->mutex); + + if (sdev->power_state) { + rval = si4713_read_property(sdev, SI4713_TX_RDS_PS_MISC); + + if (rval < 0) + goto unlock; + + sdev->rds_info.pty = get_pty(rval); + } + + rval = sdev->rds_info.pty; + +unlock: + mutex_unlock(&sdev->mutex); + return rval; +} + + +static int si4713_get_rds_enabled(struct si4713_device *sdev) +{ + int rval; + + mutex_lock(&sdev->mutex); + + if (sdev->power_state) { + rval = si4713_read_property(sdev, SI4713_TX_COMPONENT_ENABLE); + if (rval < 0) + goto unlock; + + sdev->rds_info.enabled = get_rds_status(rval); + } + + rval = sdev->rds_info.enabled; + +unlock: + mutex_unlock(&sdev->mutex); + return rval; +} + +static int si4713_get_preemphasis(struct si4713_device *sdev) +{ + int rval; + + mutex_lock(&sdev->mutex); + + if (sdev->power_state) { + rval = si4713_read_property(sdev, SI4713_TX_PREEMPHASIS); + + if (rval < 0) + goto unlock; + + switch (rval) { + case FMPE_USA: + sdev->preemphasis = V4L2_FM_TX_PREEMPHASIS_75_uS; + break; + case FMPE_EU: + sdev->preemphasis = V4L2_FM_TX_PREEMPHASIS_50_uS; + break; + case FMPE_DISABLED: + sdev->preemphasis = V4L2_FM_TX_PREEMPHASIS_DISABLED; + break; + default: + rval = -EINVAL; + goto unlock; + } + } + + rval = sdev->preemphasis; + +unlock: + mutex_unlock(&sdev->mutex); + return rval; +} + +static int si4713_get_limiter_enabled(struct si4713_device *sdev) +{ + int rval; + + mutex_lock(&sdev->mutex); + + if (sdev->power_state) { + rval = si4713_read_property(sdev, SI4713_TX_ACOMP_ENABLE); + if (rval < 0) + goto unlock; + + sdev->limiter_info.enabled = get_limiter_status(rval); + } + + rval = sdev->limiter_info.enabled; + +unlock: + mutex_unlock(&sdev->mutex); + return rval; +} + +static long si4713_get_limiter_deviation(struct si4713_device *sdev) +{ + int rval; + + mutex_lock(&sdev->mutex); + + if (sdev->power_state) { + rval = si4713_read_property(sdev, SI4713_TX_AUDIO_DEVIATION); + + if (rval < 0) + goto unlock; + + /* Device returns in 10Hz units */ + sdev->limiter_info.deviation = rval * 10; + } + + rval = sdev->limiter_info.deviation; + +unlock: + mutex_unlock(&sdev->mutex); + return rval; +} + +static long si4713_get_limiter_release_time(struct si4713_device *sdev) +{ + int rval; + + mutex_lock(&sdev->mutex); + + if (sdev->power_state) { + rval = si4713_read_property(sdev, + SI4713_TX_LIMITER_RELEASE_TIME); + + if (rval < 0) + goto unlock; + + sdev->limiter_info.release_time = dev_to_usecs(rval, + limiter_times, + ARRAY_SIZE(limiter_times)); + } + + rval = sdev->limiter_info.release_time; + +unlock: + mutex_unlock(&sdev->mutex); + return rval; +} + +static int si4713_get_stereo_enabled(struct si4713_device *sdev) +{ + int rval; + + mutex_lock(&sdev->mutex); + + if (sdev->power_state) { + rval = si4713_read_property(sdev, SI4713_TX_COMPONENT_ENABLE); + if (rval < 0) + goto unlock; + + sdev->stereo = get_stereo_status(rval); + } + + rval = sdev->stereo; + +unlock: + mutex_unlock(&sdev->mutex); + return rval; +} + +static int si4713_get_pilot_enabled(struct si4713_device *sdev) +{ + int rval; + + mutex_lock(&sdev->mutex); + + if (sdev->power_state) { + rval = si4713_read_property(sdev, SI4713_TX_COMPONENT_ENABLE); + if (rval < 0) + goto unlock; + + sdev->pilot_info.enabled = get_pilot_status(rval); + } + + rval = sdev->pilot_info.enabled; + +unlock: + mutex_unlock(&sdev->mutex); + return rval; +} + +static long si4713_get_pilot_deviation(struct si4713_device *sdev) +{ + int rval; + + mutex_lock(&sdev->mutex); + + if (sdev->power_state) { + rval = si4713_read_property(sdev, SI4713_TX_PILOT_DEVIATION); + + if (rval < 0) + goto unlock; + + /* Device returns in 10Hz units */ + sdev->pilot_info.deviation = rval * 10; + } + + rval = sdev->pilot_info.deviation; + +unlock: + mutex_unlock(&sdev->mutex); + return rval; +} + +static int si4713_get_pilot_frequency(struct si4713_device *sdev) +{ + int rval; + + mutex_lock(&sdev->mutex); + + if (sdev->power_state) { + rval = si4713_read_property(sdev, SI4713_TX_PILOT_FREQUENCY); + + if (rval < 0) + goto unlock; + + sdev->pilot_info.frequency = rval; + } + + rval = sdev->pilot_info.frequency; + +unlock: + mutex_unlock(&sdev->mutex); + return rval; +} + +static int si4713_get_acomp_enabled(struct si4713_device *sdev) +{ + int rval; + + mutex_lock(&sdev->mutex); + + if (sdev->power_state) { + rval = si4713_read_property(sdev, SI4713_TX_ACOMP_ENABLE); + if (rval < 0) + goto unlock; + + sdev->acomp_info.enabled = get_acomp_status(rval); + } + + rval = sdev->acomp_info.enabled; + +unlock: + mutex_unlock(&sdev->mutex); + return rval; +} + +static int si4713_get_acomp_gain(struct si4713_device *sdev) +{ + int rval; + + mutex_lock(&sdev->mutex); + + if (sdev->power_state) { + rval = si4713_read_property(sdev, SI4713_TX_ACOMP_GAIN); + + if (rval < 0) + goto unlock; + + sdev->acomp_info.gain = rval; + } + + rval = sdev->acomp_info.gain; + +unlock: + mutex_unlock(&sdev->mutex); + return rval; +} + +static int si4713_get_acomp_threshold(struct si4713_device *sdev, s8 *threshold) +{ + int rval; + + mutex_lock(&sdev->mutex); + + if (sdev->power_state) { + rval = si4713_read_property(sdev, SI4713_TX_ACOMP_THRESHOLD); + + if (rval < 0) + goto unlock; + + sdev->acomp_info.threshold = rval; + } + + *threshold = sdev->acomp_info.threshold; + rval = 0; + +unlock: + mutex_unlock(&sdev->mutex); + return rval; +} + +static long si4713_get_acomp_release_time(struct si4713_device *sdev) +{ + int rval; + + mutex_lock(&sdev->mutex); + + if (sdev->power_state) { + rval = si4713_read_property(sdev, + SI4713_TX_ACOMP_RELEASE_TIME); + + if (rval < 0) + goto unlock; + + sdev->acomp_info.release_time = dev_to_usecs(rval, + acomp_rtimes, + ARRAY_SIZE(acomp_rtimes)); + } + + rval = sdev->acomp_info.release_time; + +unlock: + mutex_unlock(&sdev->mutex); + return rval; +} + + +static int si4713_get_acomp_attack_time(struct si4713_device *sdev) +{ + int rval; + + mutex_lock(&sdev->mutex); + + if (sdev->power_state) { + rval = si4713_read_property(sdev, + SI4713_TX_ACOMP_RELEASE_TIME); + + if (rval < 0) + goto unlock; + + sdev->acomp_info.attack_time = rval * ATTACK_TIME_UNIT; + } + + rval = sdev->acomp_info.attack_time; + +unlock: + mutex_unlock(&sdev->mutex); + return rval; +} + +/* not read property */ +static int si4713_get_rds_ps_name(struct si4713_device *sdev, char *ps_name) +{ + mutex_lock(&sdev->mutex); + strncpy(ps_name, sdev->rds_info.ps_name, MAX_RDS_PS_NAME); + mutex_unlock(&sdev->mutex); + + return 0; +} + +static int si4713_get_rds_radio_text(struct si4713_device *sdev, + char *radio_text) +{ + mutex_lock(&sdev->mutex); + strncpy(radio_text, sdev->rds_info.radio_text, MAX_RDS_RADIO_TEXT); + mutex_unlock(&sdev->mutex); + + return 0; +} + +/* setters */ +static int si4713_set_power_level(struct si4713_device *sdev, u8 power_level) +{ + int rval; + + mutex_lock(&sdev->mutex); + + if (sdev->power_state) { + rval = si4713_tx_tune_power(sdev, power_level, + sdev->antenna_capacitor); + + if (rval < 0) + goto unlock; + } + + sdev->power_level = power_level; + rval = 0; + +unlock: + mutex_unlock(&sdev->mutex); + return rval; +} + +static int si4713_set_antenna_capacitor(struct si4713_device *sdev, u8 value) +{ + int rval = 0; + + mutex_lock(&sdev->mutex); + + if (sdev->power_state) + rval = si4713_tx_tune_power(sdev, sdev->power_level, value); + + if (!rval) + sdev->antenna_capacitor = value; + + mutex_unlock(&sdev->mutex); + + return rval; +} + +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_frequency(struct si4713_device *sdev, u16 frequency) +{ + int rval = 0; + + mutex_lock(&sdev->mutex); + + if (sdev->power_state) { + rval = si4713_tx_tune_freq(sdev, frequency); + if (rval < 0) + goto unlock; + frequency = rval; + } + sdev->frequency = frequency; + +unlock: + 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_pi(struct si4713_device *sdev, u16 pi) +{ + int rval = 0; + + mutex_lock(&sdev->mutex); + + if (sdev->power_state) + rval = si4713_write_property(sdev, SI4713_TX_RDS_PI, pi); + + if (rval >= 0) + sdev->rds_info.pi = pi; + + mutex_unlock(&sdev->mutex); + + return rval; +} + +static int si4713_set_rds_pty(struct si4713_device *sdev, u8 pty) +{ + int rval = 0; + u16 p; + + mutex_lock(&sdev->mutex); + + if (sdev->power_state) { + rval = si4713_read_property(sdev, SI4713_TX_RDS_PS_MISC); + if (rval < 0) + goto unlock; + + p = set_pty(rval, pty); + + rval = si4713_write_property(sdev, SI4713_TX_RDS_PS_MISC, p); + if (rval < 0) + goto unlock; + } + + sdev->rds_info.pty = pty; + +unlock: + 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_set_rds_enabled(struct si4713_device *sdev, u8 enabled) +{ + int rval = 0; + u16 p; + + mutex_lock(&sdev->mutex); + + if (sdev->power_state) { + rval = si4713_read_property(sdev, SI4713_TX_COMPONENT_ENABLE); + if (rval < 0) + goto unlock; + + p = rval; + if (enabled) + p = enable_rds(p); + else + p = disable_rds(p); + + rval = si4713_write_property(sdev, SI4713_TX_COMPONENT_ENABLE, + p); + if (rval < 0) + goto unlock; + + if (enabled) { + rval = si4713_write_property(sdev, + SI4713_TX_RDS_DEVIATION, + DEFAULT_RDS_DEVIATION); + if (rval < 0) + goto unlock; + } + } + + sdev->rds_info.enabled = enabled & 0x01; + +unlock: + mutex_unlock(&sdev->mutex); + return rval; +} + +static int si4713_set_preemphasis(struct si4713_device *sdev, u8 preemphasis) +{ + int rval = 0; + u8 val; + + switch (preemphasis) { + case V4L2_FM_TX_PREEMPHASIS_75_uS: + val = FMPE_USA; + break; + case V4L2_FM_TX_PREEMPHASIS_50_uS: + val = FMPE_EU; + break; + case V4L2_FM_TX_PREEMPHASIS_DISABLED: + val = FMPE_DISABLED; + break; + default: + return -EINVAL; + } + + mutex_lock(&sdev->mutex); + + if (sdev->power_state) + rval = si4713_write_property(sdev, SI4713_TX_PREEMPHASIS, val); + + if (rval >= 0) + sdev->preemphasis = preemphasis; + + mutex_unlock(&sdev->mutex); + return rval; +} + +static int si4713_set_limiter_enabled(struct si4713_device *sdev, u8 enabled) +{ + int rval = 0; + u16 p; + + mutex_lock(&sdev->mutex); + + if (sdev->power_state) { + rval = si4713_read_property(sdev, SI4713_TX_ACOMP_ENABLE); + if (rval < 0) + goto unlock; + + p = rval; + if (enabled) + p = enable_limiter(p); + else + p = disable_limiter(p); + + rval = si4713_write_property(sdev, SI4713_TX_ACOMP_ENABLE, + p); + + if (rval < 0) + goto unlock; + } + + sdev->limiter_info.enabled = enabled & 0x01; + +unlock: + mutex_unlock(&sdev->mutex); + return rval; +} + +static int si4713_set_limiter_deviation(struct si4713_device *sdev, + unsigned long deviation) +{ + int rval = 0; + + /* Device receives in 10Hz units */ + deviation /= 10; + + mutex_lock(&sdev->mutex); + + if (sdev->power_state) + rval = si4713_write_property(sdev, SI4713_TX_AUDIO_DEVIATION, + deviation); + + /* Device returns in 10Hz units */ + if (rval >= 0) + sdev->limiter_info.deviation = deviation * 10; + + mutex_unlock(&sdev->mutex); + + return rval; +} + +static int si4713_set_limiter_release_time(struct si4713_device *sdev, + unsigned long rtime) +{ + int rval; + + rval = usecs_to_dev(rtime, limiter_times, ARRAY_SIZE(limiter_times)); + if (rval < 0) + goto exit; + + rtime = rval; + rval = 0; + + mutex_lock(&sdev->mutex); + + if (sdev->power_state) + rval = si4713_write_property(sdev, + SI4713_TX_LIMITER_RELEASE_TIME, rtime); + + if (rval >= 0) + sdev->limiter_info.release_time = dev_to_usecs(rtime, + limiter_times, + ARRAY_SIZE(limiter_times)); + + mutex_unlock(&sdev->mutex); + +exit: + return rval; +} + +static int si4713_set_stereo_enabled(struct si4713_device *sdev, u8 enabled) +{ + int rval = 0; + u16 p; + + mutex_lock(&sdev->mutex); + + if (sdev->power_state) { + rval = si4713_read_property(sdev, SI4713_TX_COMPONENT_ENABLE); + if (rval < 0) + goto unlock; + + p = rval; + if (enabled) + p = enable_stereo(p); + else + p = disable_stereo(p); + + rval = si4713_write_property(sdev, SI4713_TX_COMPONENT_ENABLE, + p); + + if (rval < 0) + goto unlock; + } + + sdev->stereo = enabled & 0x01; + +unlock: + mutex_unlock(&sdev->mutex); + return rval; +} + +static int si4713_set_pilot_enabled(struct si4713_device *sdev, u8 enabled) +{ + int rval = 0; + u16 p; + + mutex_lock(&sdev->mutex); + + if (sdev->power_state) { + rval = si4713_read_property(sdev, SI4713_TX_COMPONENT_ENABLE); + if (rval < 0) + goto unlock; + + p = rval; + if (enabled) + p = enable_pilot(p); + else + p = disable_pilot(p); + + rval = si4713_write_property(sdev, SI4713_TX_COMPONENT_ENABLE, + p); + + if (rval < 0) + goto unlock; + } + + sdev->pilot_info.enabled = enabled & 0x01; + +unlock: + mutex_unlock(&sdev->mutex); + return rval; +} + +static int si4713_set_pilot_deviation(struct si4713_device *sdev, + unsigned long deviation) +{ + int rval = 0; + + /* Device receives in 10Hz units */ + deviation /= 10; + + mutex_lock(&sdev->mutex); + + if (sdev->power_state) + rval = si4713_write_property(sdev, SI4713_TX_PILOT_DEVIATION, + deviation); + + /* Device returns in 10Hz units */ + if (rval >= 0) + sdev->pilot_info.deviation = deviation * 10; + + mutex_unlock(&sdev->mutex); + + return rval; +} + +static int si4713_set_pilot_frequency(struct si4713_device *sdev, u16 freq) +{ + int rval = 0; + + mutex_lock(&sdev->mutex); + + if (sdev->power_state) + rval = si4713_write_property(sdev, SI4713_TX_PILOT_FREQUENCY, + freq); + + if (rval >= 0) + sdev->pilot_info.frequency = freq; + + mutex_unlock(&sdev->mutex); + + return rval; +} + +static int si4713_set_acomp_enabled(struct si4713_device *sdev, u8 enabled) +{ + int rval = 0; + u16 p; + + mutex_lock(&sdev->mutex); + + if (sdev->power_state) { + rval = si4713_read_property(sdev, SI4713_TX_ACOMP_ENABLE); + if (rval < 0) + goto unlock; + + p = rval; + if (enabled) + p = enable_acomp(p); + else + p = disable_acomp(p); + + rval = si4713_write_property(sdev, SI4713_TX_ACOMP_ENABLE, p); + + if (rval < 0) + goto unlock; + } + + sdev->acomp_info.enabled = enabled & 0x01; + +unlock: + mutex_unlock(&sdev->mutex); + return rval; +} + +static int si4713_set_acomp_gain(struct si4713_device *sdev, u8 gain) +{ + int rval = 0; + + mutex_lock(&sdev->mutex); + + if (sdev->power_state) + rval = si4713_write_property(sdev, SI4713_TX_ACOMP_GAIN, gain); + + if (rval >= 0) + sdev->acomp_info.gain = gain; + + mutex_unlock(&sdev->mutex); + + return rval; +} + +static int si4713_set_acomp_threshold(struct si4713_device *sdev, s8 threshold) +{ + int rval = 0; + + mutex_lock(&sdev->mutex); + + if (sdev->power_state) + rval = si4713_write_property(sdev, SI4713_TX_ACOMP_THRESHOLD, + threshold); + + if (rval >= 0) + sdev->acomp_info.threshold = threshold; + + mutex_unlock(&sdev->mutex); + + return rval; +} + +static int si4713_set_acomp_release_time(struct si4713_device *sdev, + unsigned long rtime) +{ + int rval; + + rval = usecs_to_dev(rtime, acomp_rtimes, ARRAY_SIZE(acomp_rtimes)); + if (rval < 0) + goto exit; + + rtime = rval; + rval = 0; + + mutex_lock(&sdev->mutex); + + if (sdev->power_state) + rval = si4713_write_property(sdev, + SI4713_TX_ACOMP_RELEASE_TIME, rtime); + + if (rval >= 0) + sdev->acomp_info.release_time = dev_to_usecs(rtime, + acomp_rtimes, + ARRAY_SIZE(acomp_rtimes)); + + mutex_unlock(&sdev->mutex); + +exit: + return rval; +} + +static int si4713_set_acomp_attack_time(struct si4713_device *sdev, u16 atime) +{ + int rval = 0; + + /* Device receives in 0.5 ms units */ + atime /= ATTACK_TIME_UNIT; + + mutex_lock(&sdev->mutex); + + if (sdev->power_state) + rval = si4713_write_property(sdev, + SI4713_TX_ACOMP_ATTACK_TIME, atime); + + if (rval >= 0) + sdev->acomp_info.attack_time = atime * ATTACK_TIME_UNIT; + + mutex_unlock(&sdev->mutex); + + return rval; +} + +static int si4713_set_tune_measure(struct si4713_device *sdev, u32 frequency) +{ + int rval = -ENODEV; + + mutex_lock(&sdev->mutex); + if (sdev->power_state) + rval = si4713_tx_tune_measure(sdev, frequency / 10, 0); + mutex_unlock(&sdev->mutex); + + return rval; +} + +/* + * si4713_init - Sets the device up with default configuration. + * @sdev: si4713_device structure for the device we are communicating + */ +static int si4713_init(struct si4713_device *sdev) +{ + int rval; + + rval = si4713_set_rds_pi(sdev, DEFAULT_RDS_PI); + if (rval < 0) + goto exit; + + rval = si4713_set_rds_pty(sdev, DEFAULT_RDS_PTY); + if (rval < 0) + goto exit; + + rval = si4713_set_rds_ps_name(sdev, DEFAULT_RDS_PS_NAME); + if (rval < 0) + goto exit; + + rval = si4713_set_rds_radio_text(sdev, DEFAULT_RDS_RADIO_TEXT); + if (rval < 0) + goto exit; + + rval = si4713_set_rds_enabled(sdev, 1); + if (rval < 0) + goto exit; + + rval = si4713_set_limiter_release_time(sdev, DEFAULT_LIMITER_RTIME); + if (rval < 0) + goto exit; + + rval = si4713_set_limiter_deviation(sdev, DEFAULT_LIMITER_DEV); + if (rval < 0) + goto exit; + + rval = si4713_set_limiter_enabled(sdev, 1); + if (rval < 0) + goto exit; + + rval = si4713_set_pilot_frequency(sdev, DEFAULT_PILOT_FREQUENCY); + if (rval < 0) + goto exit; + + rval = si4713_set_pilot_deviation(sdev, DEFAULT_PILOT_DEVIATION); + if (rval < 0) + goto exit; + + rval = si4713_set_pilot_enabled(sdev, 1); + if (rval < 0) + goto exit; + + rval = si4713_set_stereo_enabled(sdev, 1); + if (rval < 0) + goto exit; + + rval = si4713_set_acomp_attack_time(sdev, DEFAULT_ACOMP_ATIME); + if (rval < 0) + goto exit; + + rval = si4713_set_acomp_release_time(sdev, DEFAULT_ACOMP_RTIME); + if (rval < 0) + goto exit; + + rval = si4713_set_acomp_gain(sdev, DEFAULT_ACOMP_GAIN); + if (rval < 0) + goto exit; + + rval = si4713_set_acomp_threshold(sdev, DEFAULT_ACOMP_THRESHOLD); + if (rval < 0) + goto exit; + + rval = si4713_set_acomp_enabled(sdev, 1); + if (rval < 0) + goto exit; + + rval = si4713_set_mute(sdev, DEFAULT_MUTE); + if (rval < 0) + goto exit; + + rval = si4713_set_power_level(sdev, DEFAULT_POWER_LEVEL); + if (rval < 0) + goto exit; + + rval = si4713_set_preemphasis(sdev, V4L2_FM_TX_PREEMPHASIS_50_uS); + if (rval < 0) + goto exit; + +exit: + return rval; +} + +/* + * 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 si4713_device *tmp; + int rval; + + 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); + + rval = si4713_set_rds_pi(sdev, tmp->rds_info.pi); + if (rval < 0) + goto exit; + + rval = si4713_set_rds_pty(sdev, tmp->rds_info.pty); + if (rval < 0) + goto exit; + + rval = si4713_set_rds_ps_name(sdev, tmp->rds_info.ps_name); + if (rval < 0) + goto exit; + + rval = si4713_set_rds_radio_text(sdev, tmp->rds_info.radio_text); + if (rval < 0) + goto exit; + + rval = si4713_set_rds_enabled(sdev, tmp->rds_info.enabled); + if (rval < 0) + goto exit; + + rval = si4713_set_limiter_release_time(sdev, + tmp->limiter_info.release_time); + if (rval < 0) + goto exit; + + rval = si4713_set_limiter_deviation(sdev, tmp->limiter_info.deviation); + if (rval < 0) + goto exit; + + rval = si4713_set_limiter_enabled(sdev, tmp->limiter_info.enabled); + if (rval < 0) + goto exit; + + rval = si4713_set_pilot_frequency(sdev, tmp->pilot_info.frequency); + if (rval < 0) + goto exit; + + rval = si4713_set_pilot_deviation(sdev, tmp->pilot_info.deviation); + if (rval < 0) + goto exit; + + rval = si4713_set_pilot_enabled(sdev, tmp->pilot_info.enabled); + if (rval < 0) + goto exit; + + rval = si4713_set_stereo_enabled(sdev, tmp->stereo); + if (rval < 0) + goto exit; + + rval = si4713_set_acomp_attack_time(sdev, tmp->acomp_info.attack_time); + if (rval < 0) + goto exit; + + rval = si4713_set_acomp_release_time(sdev, + tmp->acomp_info.release_time); + if (rval < 0) + goto exit; + + rval = si4713_set_acomp_gain(sdev, tmp->acomp_info.gain); + if (rval < 0) + goto exit; + + rval = si4713_set_acomp_threshold(sdev, tmp->acomp_info.threshold); + if (rval < 0) + goto exit; + + rval = si4713_set_acomp_enabled(sdev, tmp->acomp_info.enabled); + if (rval < 0) + goto exit; + + rval = si4713_set_mute(sdev, tmp->mute); + if (rval < 0) + goto exit; + + rval = si4713_set_preemphasis(sdev, tmp->preemphasis); + if (rval < 0) + goto exit; + + rval = si4713_set_frequency(sdev, tmp->frequency ? tmp->frequency : + DEFAULT_FREQUENCY); + if (rval < 0) + goto exit; + + rval = si4713_set_power_level(sdev, tmp->power_level ? + tmp->power_level : + DEFAULT_POWER_LEVEL); + if (rval < 0) + goto exit; + + rval = si4713_set_antenna_capacitor(sdev, tmp->antenna_capacitor); + +exit: + kfree(tmp); + return rval; +} + +static int si4713_probe(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; + + rval = si4713_init(sdev); + +exit: + return rval; +} + +static int si4713_write_econtrol(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) { + /* User class controls */ + case V4L2_CID_AUDIO_MUTE: + rval = si4713_set_mute(sdev, control->value); + break; + /* FM_TX class controls */ + case V4L2_CID_RDS_ENABLED: + rval = si4713_set_rds_enabled(sdev, control->value); + break; + case V4L2_CID_RDS_PI: + rval = si4713_set_rds_pi(sdev, control->value); + break; + case V4L2_CID_RDS_PTY: + rval = si4713_set_rds_pty(sdev, control->value); + break; + case V4L2_CID_RDS_PS_NAME: + size = control->length > MAX_RDS_PS_NAME ? MAX_RDS_PS_NAME : + control->length; + rval = copy_from_user(ps_name, control->string, size + 1); + if (rval < 0) + goto exit; + rval = si4713_set_rds_ps_name(sdev, ps_name); + goto exit; + case V4L2_CID_RDS_RADIO_TEXT: + size = control->length > MAX_RDS_RADIO_TEXT ? + MAX_RDS_RADIO_TEXT : control->length; + rval = copy_from_user(radio_text, control->string, size + 1); + if (rval < 0) + goto exit; + rval = si4713_set_rds_radio_text(sdev, radio_text); + goto exit; + + case V4L2_CID_AUDIO_LIMITER_ENABLED: + rval = si4713_set_limiter_enabled(sdev, control->value); + break; + case V4L2_CID_AUDIO_LIMITER_RELEASE_TIME: + rval = si4713_set_limiter_release_time(sdev, control->value); + break; + case V4L2_CID_AUDIO_LIMITER_DEVIATION: + rval = si4713_set_limiter_deviation(sdev, control->value); + break; + + case V4L2_CID_AUDIO_COMPRESSION_ENABLED: + rval = si4713_set_acomp_enabled(sdev, control->value); + break; + case V4L2_CID_AUDIO_COMPRESSION_GAIN: + rval = si4713_set_acomp_gain(sdev, control->value); + break; + case V4L2_CID_AUDIO_COMPRESSION_THRESHOLD: + rval = si4713_set_acomp_threshold(sdev, control->value); + break; + case V4L2_CID_AUDIO_COMPRESSION_ATTACK_TIME: + rval = si4713_set_acomp_attack_time(sdev, control->value); + break; + case V4L2_CID_AUDIO_COMPRESSION_RELEASE_TIME: + rval = si4713_set_acomp_release_time(sdev, control->value); + break; + + case V4L2_CID_PILOT_TONE_ENABLED: + rval = si4713_set_pilot_enabled(sdev, control->value); + break; + case V4L2_CID_PILOT_TONE_DEVIATION: + rval = si4713_set_pilot_deviation(sdev, control->value); + break; + case V4L2_CID_PILOT_TONE_FREQUENCY: + rval = si4713_set_pilot_frequency(sdev, control->value); + break; + + case V4L2_CID_PREEMPHASIS: + rval = si4713_set_preemphasis(sdev, control->value); + break; + case V4L2_CID_TUNE_POWER_LEVEL: + rval = si4713_set_power_level(sdev, control->value); + break; + case V4L2_CID_TUNE_ANTENNA_CAPACITOR: + rval = si4713_set_antenna_capacitor(sdev, control->value); + break; + default: + rval = -EINVAL; + break; + }; + + /* FIXME: There are properties with negative values */ + if (rval >= 0) { + control->value = rval; + rval = 0; + } + +exit: + return rval; +} + +static int si4713_read_econtrol(struct si4713_device *sdev, + struct v4l2_ext_control *control) +{ + s32 rval = 0; + s8 val = 0; + char ps_name[MAX_RDS_PS_NAME + 1]; + char radio_text[MAX_RDS_RADIO_TEXT + 1]; + + switch (control->id) { + /* User class controls */ + case V4L2_CID_AUDIO_MUTE: + rval = si4713_get_mute(sdev); + break; + /* FM_TX class controls */ + case V4L2_CID_RDS_ENABLED: + rval = si4713_get_rds_enabled(sdev); + break; + case V4L2_CID_RDS_PI: + rval = si4713_get_rds_pi(sdev); + break; + case V4L2_CID_RDS_PTY: + rval = si4713_get_rds_pty(sdev); + break; + + case V4L2_CID_AUDIO_LIMITER_ENABLED: + rval = si4713_get_limiter_enabled(sdev); + break; + case V4L2_CID_AUDIO_LIMITER_RELEASE_TIME: + rval = si4713_get_limiter_release_time(sdev); + break; + case V4L2_CID_AUDIO_LIMITER_DEVIATION: + rval = si4713_get_limiter_deviation(sdev); + break; + + case V4L2_CID_AUDIO_COMPRESSION_ENABLED: + rval = si4713_get_acomp_enabled(sdev); + break; + case V4L2_CID_AUDIO_COMPRESSION_GAIN: + rval = si4713_get_acomp_gain(sdev); + break; + case V4L2_CID_AUDIO_COMPRESSION_THRESHOLD: + rval = si4713_get_acomp_threshold(sdev, &val); + if (rval == 0) + control->value = val; + /* We can have negative value, so return earlier */ + goto exit; + case V4L2_CID_AUDIO_COMPRESSION_ATTACK_TIME: + rval = si4713_get_acomp_attack_time(sdev); + break; + case V4L2_CID_AUDIO_COMPRESSION_RELEASE_TIME: + rval = si4713_get_acomp_release_time(sdev); + break; + + case V4L2_CID_PILOT_TONE_ENABLED: + rval = si4713_get_pilot_enabled(sdev); + break; + case V4L2_CID_PILOT_TONE_DEVIATION: + rval = si4713_get_pilot_deviation(sdev); + break; + case V4L2_CID_PILOT_TONE_FREQUENCY: + rval = si4713_get_pilot_frequency(sdev); + break; + + case V4L2_CID_PREEMPHASIS: + rval = si4713_get_preemphasis(sdev); + break; + + /* here we do not use read property */ + case V4L2_CID_RDS_PS_NAME: + rval = si4713_get_rds_ps_name(sdev, ps_name); + if (rval < 0) + goto exit; + rval = copy_to_user(control->string, ps_name, + strlen(ps_name) + 1); + control->length = strlen(ps_name); + goto exit; + case V4L2_CID_RDS_RADIO_TEXT: + rval = si4713_get_rds_radio_text(sdev, radio_text); + if (rval < 0) + goto exit; + rval = copy_to_user(control->string, radio_text, + strlen(radio_text) + 1); + control->length = strlen(radio_text); + goto exit; + + /* here we use tx tune status */ + case V4L2_CID_TUNE_POWER_LEVEL: + rval = si4713_get_power_level(sdev); + break; + case V4L2_CID_TUNE_ANTENNA_CAPACITOR: + rval = si4713_get_antenna_capacitor(sdev); + break; + default: + rval = -EINVAL; + break; + }; + + if (rval >= 0) { + control->value = rval; + rval = 0; + } + +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 = si4713_write_econtrol(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 = si4713_read_econtrol(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_ENABLED: + rval = v4l2_ctrl_query_fill(qc, 0, 1, 1, 1); + break; + case V4L2_CID_RDS_PI: + rval = v4l2_ctrl_query_fill(qc, 0, 0xFFFF, 1, DEFAULT_RDS_PI); + break; + case V4L2_CID_RDS_PTY: + rval = v4l2_ctrl_query_fill(qc, 0, 31, 1, DEFAULT_RDS_PTY); + break; + /* TODO: String controls not implemented yet */ + case V4L2_CID_RDS_PS_NAME: + rval = v4l2_ctrl_query_fill(qc, 0, 0, 0, 0); + break; + case V4L2_CID_RDS_RADIO_TEXT: + rval = v4l2_ctrl_query_fill(qc, 0, 0, 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_PREEMPHASIS: + rval = v4l2_ctrl_query_fill(qc, V4L2_FM_TX_PREEMPHASIS_DISABLED, + V4L2_FM_TX_PREEMPHASIS_75_uS, 1, + V4L2_FM_TX_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; + + switch (ctrl->id) { + case V4L2_CID_AUDIO_MUTE: + rval = si4713_get_mute(sdev); + if (rval >= 0) { + ctrl->value = rval; + rval = 0; + } + break; + } + + 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; +} + +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, +}; + +/* + * 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; + + 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; + + /* Report current frequency range limits */ + vm->rangelow = si4713_to_v4l2(7600); + vm->rangehigh = si4713_to_v4l2(10800); + + /* Report current audio mode: mono or stereo */ + vm->txsubchans = V4L2_TUNER_SUB_MONO; + rval = si4713_get_stereo_enabled(sdev); + if (rval < 0) + goto exit; + if (rval) + vm->txsubchans |= V4L2_TUNER_SUB_STEREO; + + /* TODO: Report current signal length */ + + rval = 0; +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; + + if (!sdev) { + rval = -ENODEV; + goto exit; + } + + if (vm->index > 0) { + rval = -EINVAL; + goto exit; + } + + /* Set audio mode: mono or stereo */ + rval = si4713_set_stereo_enabled(sdev, + !!(vm->txsubchans & V4L2_TUNER_SUB_STEREO)); + if (rval < 0) + goto exit; + + /* TODO: How to set frequency to measure current signal length */ + +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; + int freq; + + f->type = V4L2_TUNER_RADIO; + freq = si4713_get_frequency(sdev); + + if (freq < 0) + rval = freq; + else + f->frequency = si4713_to_v4l2(freq); + + 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; + + rval = si4713_set_frequency(sdev, v4l2_to_si4713(f->frequency)); + if (rval > 0) { + f->frequency = si4713_to_v4l2(rval); + rval = 0; + } + + 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_i2c_driver_probe - probe for the device + */ +static int si4713_i2c_driver_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_dbg(&client->dev, "Failed to alloc video device.\n"); + rval = -ENOMEM; + goto exit; + } + + sdev->platform_data = client->dev.platform_data; + if (!sdev->platform_data) { + dev_err(&client->dev, "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) { + dev_err(&client->dev, "Could not request IRQ\n"); + goto free_sdev; + } + dev_dbg(&client->dev, "IRQ requested.\n"); + } else { + dev_info(&client->dev, "IRQ not configure. Using timeouts.\n"); + } + + rval = si4713_probe(sdev); + if (rval < 0) { + dev_err(&client->dev, "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_i2c_driver_remove - remove the device + */ +static int __exit si4713_i2c_driver_remove(struct i2c_client *client) +{ + struct v4l2_subdev *sd = i2c_get_clientdata(client); + struct si4713_device *sdev = to_si4713_device(sd); + + /* our client isn't attached */ + if (!client->adapter) + return -ENODEV; + + if (sdev) { + 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_i2c_driver_probe, + .remove = __exit_p(si4713_i2c_driver_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); + +MODULE_LICENSE("GPL"); +MODULE_AUTHOR("Eduardo Valentin "); +MODULE_DESCRIPTION("I2C driver for Si4713 FM Radio Transmitter"); +MODULE_VERSION("0.0.1"); + diff --git a/linux/drivers/media/radio/si4713-i2c.h b/linux/drivers/media/radio/si4713-i2c.h new file mode 100644 index 0000000..d3c9259 --- /dev/null +++ b/linux/drivers/media/radio/si4713-i2c.h @@ -0,0 +1,226 @@ +/* + * 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 + * + * 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 +#include + +#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 { + u16 pi; +#define MAX_RDS_PTY 31 + u8 pty; +#define MAX_RDS_PS_NAME 96 + u8 ps_name[MAX_RDS_PS_NAME + 1]; +#define MAX_RDS_RADIO_TEXT 384 + u8 radio_text[MAX_RDS_RADIO_TEXT + 1]; + u8 enabled; +}; + +struct limiter_info { +#define MAX_LIMITER_RELEASE_TIME 102390 + unsigned long release_time; +#define MAX_LIMITER_DEVIATION 90000 + unsigned long deviation; + u8 enabled; +}; + +struct pilot_info { +#define MAX_PILOT_DEVIATION 90000 + unsigned long deviation; +#define MAX_PILOT_FREQUENCY 19000 + u16 frequency; + u8 enabled; +}; + +struct acomp_info { +#define MAX_ACOMP_RELEASE_TIME 1000000 + unsigned long release_time; +#define MAX_ACOMP_ATTACK_TIME 5000 + u16 attack_time; +#define MAX_ACOMP_THRESHOLD 0 +#define MIN_ACOMP_THRESHOLD (-40) + s8 threshold; +#define MAX_ACOMP_GAIN 20 + u8 gain; + u8 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; + u16 frequency; + u8 preemphasis; + u8 mute; + u8 power_level; + u8 power_state; + u8 antenna_capacitor; + u8 stereo; + u8 tune_rssi; +}; +#endif /* ifndef SI4713_I2C_H */ -- 1.6.2.GIT