diff options
Diffstat (limited to 'drivers/media/radio/si4713-i2c.c')
| -rw-r--r-- | drivers/media/radio/si4713-i2c.c | 2067 |
1 files changed, 2067 insertions, 0 deletions
diff --git a/drivers/media/radio/si4713-i2c.c b/drivers/media/radio/si4713-i2c.c new file mode 100644 index 000000000000..8cbbe48b01bd --- /dev/null +++ b/drivers/media/radio/si4713-i2c.c @@ -0,0 +1,2067 @@ +/* + * 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); + |
