--- /dev/null
+/*
+ * Copyright (C) 2010-2012 Freescale Semiconductor, Inc. All Rights Reserved.
+ */
+
+/*
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#include <linux/mutex.h>
+#include <linux/completion.h>
+#include <linux/delay.h>
+#include <linux/interrupt.h>
+#include <linux/i2c.h>
+#include <linux/slab.h>
+#include <linux/gpio.h>
+#include <linux/regulator/consumer.h>
+#include <media/v4l2-device.h>
+#include <media/v4l2-ioctl.h>
+#include <media/v4l2-common.h>
+
+#include "si4763-i2c.h"
+
+#define DEBUG 1
+/* module parameters */
+static int debug;
+module_param(debug, int, S_IRUGO | S_IWUSR);
+MODULE_PARM_DESC(debug, "Debug level (0 - 2)");
+
+MODULE_DESCRIPTION("I2C driver for Si4763 FM Radio Transmitter");
+
+/* Radio Nr */
+static int radio_nr = -1;
+
+
+/* radio_si4713_fops - file operations interface */
+static const struct v4l2_file_operations radio_si4763_fops = {
+ .owner = THIS_MODULE,
+ .ioctl = video_ioctl2,
+};
+
+
+#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_si4763_device(sd) container_of(sd, struct si4763_device, sd)
+
+/* frequency domain transformation (using times 10 to avoid floats) */
+#define FREQ_RANGE_LOW 8750
+#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 compose_u32(msb, lsb) (((u32)msb << 16) | 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
+
+
+/*
+ * 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 si4763_device *sdev, const u8 command,
+ const u8 args[], const int argn,
+ u8 response[], const int respn, const int usecs)
+{
+ struct i2c_client *client = sdev->client;
+ u8 data1[MAX_ARGS + 1];
+ int err;
+ int i;
+ 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 */
+ i = 0;
+ err = i2c_master_recv(client, response, respn);
+ while (i++ < usecs && ((response[0] & 0x80) != 0x80)) {
+ err = i2c_master_recv(client, response, respn);
+ udelay(1);
+ }
+
+
+ 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_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 si4763_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;
+}
+
+static int si4713_enable_digitalout(struct si4763_device *sdev)
+{
+ 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_EN_DIGITALOUT_NARGS] = {
+ 10,
+ 10,
+ 12,
+ 0,
+ };
+
+ rval = si4713_send_command(sdev, SI4713_CMD_EN_DIGITALOUT,
+ args, ARRAY_SIZE(args),
+ resp, ARRAY_SIZE(resp),
+ DEFAULT_TIMEOUT);
+
+ if (rval < 0)
+ return rval;
+
+
+ /*
+ * 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;
+}
+
+static int si4713_get_digitalout(struct si4763_device *sdev, u32 *response)
+{
+ int rval;
+ u8 resp[5];
+ u16 temp1, temp2;
+
+ /*
+ * .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_EN_DIGITALOUT_NARGS] = {
+ 0,
+ 0,
+ 0,
+ 0,
+ };
+
+ rval = si4713_send_command(sdev, SI4713_CMD_EN_DIGITALOUT,
+ args, ARRAY_SIZE(args),
+ resp, ARRAY_SIZE(resp),
+ DEFAULT_TIMEOUT);
+
+ if (rval < 0)
+ return rval;
+
+ temp1 = compose_u16(resp[1], resp[2]);
+ temp2 = compose_u16(resp[3], resp[4]);
+ *response = compose_u32(temp1, temp2);
+ /*
+ * 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 si4763_device *sdev)
+{
+ int err;
+ u8 resp[SI4760_PWUP_NRESP];
+ const u8 args[SI4760_PWUP_NARGS] = {
+ SI4760_PWUP_ARG1,
+ SI4760_PWUP_ARG2,
+ SI4760_PWUP_ARG3,
+ SI4760_PWUP_ARG4,
+ SI4760_PWUP_ARG5,
+ };
+
+
+ if (sdev->power_state)
+ return 0;
+ err = si4713_send_command(sdev, SI4760_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;
+
+ } else {
+ /* if (gpio_is_valid(sdev->gpio_reset))
+ gpio_set_value(sdev->gpio_reset, 0);
+ err = regulator_bulk_disable(ARRAY_SIZE(sdev->supplies),
+ sdev->supplies);
+ */ if (err)
+ v4l2_err(&sdev->sd,
+ "Failed to disable supplies: %d\n", err);
+ }
+
+ return err;
+}
+
+/*
+ * si4713_powerdown - Powers the device down
+ * @sdev: si4713_device structure for the device we are communicating
+ */
+static int si4713_powerdown(struct si4763_device *sdev)
+{
+ int err;
+ u8 resp[SI4760_PWDN_NRESP];
+
+
+ err = si4713_send_command(sdev, SI4760_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");
+ if (err)
+ v4l2_err(&sdev->sd,
+ "Failed to disable supplies: %d\n", err);
+ 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 si4763_device *sdev)
+{
+ struct i2c_client *client = sdev->client;
+ int rval;
+ u8 resp[SI4760_GETREV_NRESP];
+
+ mutex_lock(&sdev->mutex);
+
+ rval = si4713_send_command(sdev, SI4760_CMD_GET_REV,
+ NULL, 0,
+ resp, ARRAY_SIZE(resp),
+ DEFAULT_TIMEOUT);
+
+ if (rval < 0)
+ goto unlock;
+
+ if (resp[1] == SI4760_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 si4763_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 si4763_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),
+ 0x00,
+ 0x00,
+ };
+
+ 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;
+
+ return 0;
+}
+
+
+/*
+ * 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 si4763_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);
+}
+
+static int si4763_fm_rsq_status(struct si4763_device *sdev,
+ u16 *frequency)
+{
+ int err;
+ u8 val[SI4763_FM_RSQ_STATUS_NRESP];
+ /*
+ * .First byte = intack bit
+ */
+ const u8 args[SI4763_FM_RSQ_STATUS_NARGS] = {
+ 0x00,
+ };
+
+ err = si4713_send_command(sdev, SI4763_CMD_FM_RSQ_STATUS,
+ args, ARRAY_SIZE(args), val,
+ ARRAY_SIZE(val), DEFAULT_TIMEOUT);
+
+ *frequency = compose_u16(val[3], val[4]);
+ return err;
+}
+
+
+static int si4713_set_power_state(struct si4763_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;
+}
+
+
+/*
+ * si4713_initialize - Sets the device up with default configuration.
+ * @sdev: si4713_device structure for the device we are communicating
+ */
+static int si4713_initialize(struct si4763_device *sdev)
+{
+ int rval;
+
+ rval = si4713_set_power_state(sdev, POWER_OFF);
+ if (rval < 0)
+ goto exit;
+
+ 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;
+
+exit:
+ return rval;
+}
+
+static int si4763_setup(struct si4763_device *sdev)
+{
+ int rval;
+ u32 temp;
+ rval = si4713_write_property(sdev, 0x0202, 0xBB80);
+ if (rval < 0)
+ goto exit;
+
+ rval = si4713_write_property(sdev, 0x0203, 0x0400);
+ if (rval < 0)
+ goto exit;
+ rval = si4713_tx_tune_freq(sdev, FREQ_RANGE_LOW);
+ if (rval < 0)
+ goto exit;
+
+ rval = si4713_enable_digitalout(sdev);
+ if (rval < 0)
+ goto exit;
+
+ rval = si4713_get_digitalout(sdev, &temp);
+ if (rval < 0)
+ goto exit;
+
+exit:
+ return rval;
+}
+
+/*
+ * Video4Linux Subdev Interface
+ */
+
+/* si4713_ioctl - deal with private ioctls (only rnl for now) */
+long si4713_ioctl(struct v4l2_subdev *sd, unsigned int cmd, void *arg)
+{
+ struct si4763_device *sdev = to_si4763_device(sd);
+ struct si4713_rnl *rnl = arg;
+ int frequency = 0;
+ int rval = 0;
+
+ if (!arg)
+ return -EINVAL;
+
+ mutex_lock(&sdev->mutex);
+ switch (cmd) {
+ case SI4713_IOC_MEASURE_RNL:
+
+ 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 */
+ }
+ rnl->rnl = sdev->tune_rnl;
+ break;
+
+ default:
+ /* nothing */
+ rval = -ENOIOCTLCMD;
+ }
+
+unlock:
+ mutex_unlock(&sdev->mutex);
+ return rval;
+}
+
+
+/* si4763_g_frequency - get tuner or modulator radio frequency */
+static int si4763_g_frequency(struct file *file, void *priv,
+ struct v4l2_frequency *f)
+{
+
+ struct si4763_device *sdev = video_drvdata(file);
+ int rval = 0;
+
+ f->type = V4L2_TUNER_RADIO;
+
+ mutex_lock(&sdev->mutex);
+
+ if (sdev->power_state) {
+ u16 freq;
+
+ rval = si4763_fm_rsq_status(sdev, &freq);
+ if (rval < 0)
+ goto unlock;
+
+ sdev->frequency = freq;
+ }
+
+ f->frequency = sdev->frequency;
+
+unlock:
+ mutex_unlock(&sdev->mutex);
+ return rval;
+}
+
+/* si4713_s_frequency - set tuner or modulator radio frequency */
+static int si4763_s_frequency(struct file *file, void *priv,
+ struct v4l2_frequency *f)
+
+{
+ struct si4763_device *sdev = video_drvdata(file);
+ int rval = 0;
+ u16 frequency = 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 = frequency;
+
+unlock:
+ mutex_unlock(&sdev->mutex);
+ return rval;
+}
+
+
+/**************************************************************************
+ * File Operations Interface
+ **************************************************************************/
+
+/*
+ * si4763_fops_open - file open
+ */
+int si4763_fops_open(struct file *file)
+{
+ struct si4763_device *radio = video_drvdata(file);
+ int retval = 0;
+
+ if (radio->users != 0)
+ return -ENODEV;
+ /* start radio */
+ si4713_set_power_state(radio, POWER_ON);
+ si4763_setup(radio);
+ radio->users = 1;
+
+ return retval;
+}
+
+
+/*
+ * si470x_fops_release - file release
+ */
+int si4763_fops_release(struct file *file)
+{
+ struct si4763_device *radio = video_drvdata(file);
+ int retval = 0;
+
+ /* safety check */
+ if (!radio)
+ return -ENODEV;
+
+
+ /* stop radio */
+ si4713_set_power_state(radio, POWER_OFF);
+ radio->users = 0;
+ return retval;
+}
+
+
+/*
+ * si4763_fops - file operations interface
+ * video_ioctl2 is part of the v4l2 implementations. Change this pointer to the
+ * ioctl function you want to implement, in case you don't want to be part of
+ * v4l2.
+ */
+static const struct v4l2_file_operations si4763_fops = {
+ .owner = THIS_MODULE,
+ .ioctl = video_ioctl2,
+ .open = si4763_fops_open,
+ .release = si4763_fops_release,
+};
+
+
+/*
+ * si4763_ioctl_ops - video device ioctl operations
+ */
+static const struct v4l2_ioctl_ops si4763_ioctl_ops = {
+ .vidioc_g_frequency = si4763_g_frequency,
+ .vidioc_s_frequency = si4763_s_frequency,
+};
+
+
+/*
+ * si4763_viddev_template - video device interface
+ */
+struct video_device si4763_viddev_template = {
+ .fops = &si4763_fops,
+ .name = "si4763_i2c",
+ .release = video_device_release,
+ .ioctl_ops = &si4763_ioctl_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 si4763_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->client = client;
+ sdev->users = 0;
+ /* video device allocation and initialization */
+ sdev->videodev = video_device_alloc();
+ if (!sdev->videodev) {
+ rval = -ENOMEM;
+ goto free_video;
+ }
+
+
+ mutex_init(&sdev->mutex);
+ memcpy(sdev->videodev, &si4763_viddev_template,
+ sizeof(si4763_viddev_template));
+ video_set_drvdata(sdev->videodev, sdev);
+/*
+ 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 put_reg;
+ }
+ 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_sdev;
+ }
+
+ /* register video device */
+ rval = video_register_device(sdev->videodev, VFL_TYPE_RADIO,
+ radio_nr);
+ if (rval) {
+ dev_warn(&client->dev, "Could not register video device\n");
+ goto free_video;
+ }
+ i2c_set_clientdata(client, sdev);
+ return 0;
+
+free_video:
+ video_device_release(sdev->videodev);
+
+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 si4763_device *sdev = to_si4763_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[] = {
+ { "si4763_i2c" , 0 },
+ { },
+};
+MODULE_DEVICE_TABLE(i2c, si4713_id);
+
+static struct i2c_driver si4713_i2c_driver = {
+ .driver = {
+ .name = "si4763_i2c",
+ },
+ .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);
+
+/* Module information */
+MODULE_AUTHOR("Freescale Semiconductor, Inc.");
+MODULE_DESCRIPTION("I2C si4763");
+MODULE_LICENSE("GPL");
+
--- /dev/null
+/*
+ * Copyright (C) 2008-2012 Freescale Semiconductor, Inc. All Rights Reserved.
+ */
+
+#ifndef SI4763_I2C_H
+#define SI4763_I2C_H
+
+#include <media/v4l2-subdev.h>
+#include <media/si4763.h>
+
+#define SI4760_PRODUCT_NUMBER 0x05
+
+/* 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 SI4760_PWUP_NARGS 5
+#define SI4760_PWUP_NRESP 1
+#define SI4760_PWDOWN_NARGS 1
+
+#define SI4760_CMD_POWER_UP 0x01
+
+#define SI4760_PWUP_ARG1 0xF7
+#define SI4760_PWUP_ARG2 0x28
+#define SI4760_PWUP_ARG3 0x07
+#define SI4760_PWUP_ARG4 0x11
+#define SI4760_PWUP_ARG5 0x11
+
+#define SI4713_CMD_EN_DIGITALOUT 0x18
+#define SI4713_EN_DIGITALOUT_NARGS 4
+
+
+#define SI4760_GETREV_NRESP 9
+#define SI4760_CMD_GET_REV 0x02
+
+#define SI4760_PWDN_NRESP 1
+#define SI4760_CMD_POWER_DOWN 0x11
+
+#define SI4763_CMD_FM_RSQ_STATUS 0x32
+#define SI4763_FM_RSQ_STATUS_NARGS 1
+#define SI4763_FM_RSQ_STATUS_NRESP 5
+
+#define SI4713_SET_PROP_NARGS 5
+#define SI4713_SET_PROP_NRESP 1
+#define SI4713_CMD_SET_PROPERTY 0x13
+
+#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 5
+#define SI4713_TXFREQ_NRESP 1
+#define SI4713_CMD_TX_TUNE_FREQ 0x30
+
+#define SI4713_MAX_POWER 120
+#define SI4713_MIN_POWER 88
+#define SI4713_MAX_ANTCAP 191
+#define SI4713_MIN_ANTCAP 0
+#define SI4713_TXPWR_NARGS 4
+#define SI4713_TXPWR_NRESP 1
+#define SI4713_CMD_TX_TUNE_POWER 0x31
+
+#define SI4713_TXMEA_NARGS 4
+#define SI4713_TXMEA_NRESP 1
+#define SI4713_CMD_TX_TUNE_MEASURE 0x32
+
+#define SI4713_INTACK_MASK 0x01
+#define SI4713_TXSTATUS_NARGS 1
+#define SI4713_TXSTATUS_NRESP 8
+#define SI4713_CMD_TX_TUNE_STATUS 0x33
+
+#define SI4713_OVERMOD_BIT (1 << 2)
+#define SI4713_IALH_BIT (1 << 1)
+#define SI4713_IALL_BIT (1 << 0)
+#define SI4713_ASQSTATUS_NARGS 1
+#define SI4713_ASQSTATUS_NRESP 5
+#define SI4713_CMD_TX_ASQ_STATUS 0x34
+
+#define SI4713_RDSBUFF_MODE_MASK 0x87
+#define SI4713_RDSBUFF_NARGS 7
+#define SI4713_RDSBUFF_NRESP 6
+#define SI4713_CMD_TX_RDS_BUFF 0x35
+
+#define SI4713_RDSPS_PSID_MASK 0x1F
+#define SI4713_RDSPS_NARGS 5
+#define SI4713_RDSPS_NRESP 1
+#define SI4713_CMD_TX_RDS_PS 0x36
+
+#define SI4713_CMD_GPO_CTL 0x80
+#define SI4713_CMD_GPO_SET 0x81
+
+/*
+ * Bits from status response
+ */
+#define SI4713_CTS (1<<7)
+#define SI4713_ERR (1<<6)
+#define SI4713_RDS_INT (1<<2)
+#define SI4713_ASQ_INT (1<<1)
+#define SI4713_STC_INT (1<<0)
+
+/*
+ * Property definitions
+ */
+#define SI4713_GPO_IEN 0x0001
+#define SI4713_DIG_INPUT_FORMAT 0x0101
+#define SI4713_DIG_INPUT_SAMPLE_RATE 0x0103
+#define SI4713_REFCLK_FREQ 0x0201
+#define SI4713_REFCLK_PRESCALE 0x0202
+#define SI4713_TX_COMPONENT_ENABLE 0x2100
+#define SI4713_TX_AUDIO_DEVIATION 0x2101
+#define SI4713_TX_PILOT_DEVIATION 0x2102
+#define SI4713_TX_RDS_DEVIATION 0x2103
+#define SI4713_TX_LINE_INPUT_LEVEL 0x2104
+#define SI4713_TX_LINE_INPUT_MUTE 0x2105
+#define SI4713_TX_PREEMPHASIS 0x2106
+#define SI4713_TX_PILOT_FREQUENCY 0x2107
+#define SI4713_TX_ACOMP_ENABLE 0x2200
+#define SI4713_TX_ACOMP_THRESHOLD 0x2201
+#define SI4713_TX_ACOMP_ATTACK_TIME 0x2202
+#define SI4713_TX_ACOMP_RELEASE_TIME 0x2203
+#define SI4713_TX_ACOMP_GAIN 0x2204
+#define SI4713_TX_LIMITER_RELEASE_TIME 0x2205
+#define SI4713_TX_ASQ_INTERRUPT_SOURCE 0x2300
+#define SI4713_TX_ASQ_LEVEL_LOW 0x2301
+#define SI4713_TX_ASQ_DURATION_LOW 0x2302
+#define SI4713_TX_ASQ_LEVEL_HIGH 0x2303
+#define SI4713_TX_ASQ_DURATION_HIGH 0x2304
+#define SI4713_TX_RDS_INTERRUPT_SOURCE 0x2C00
+#define SI4713_TX_RDS_PI 0x2C01
+#define SI4713_TX_RDS_PS_MIX 0x2C02
+#define SI4713_TX_RDS_PS_MISC 0x2C03
+#define SI4713_TX_RDS_PS_REPEAT_COUNT 0x2C04
+#define SI4713_TX_RDS_PS_MESSAGE_COUNT 0x2C05
+#define SI4713_TX_RDS_PS_AF 0x2C06
+#define SI4713_TX_RDS_FIFO_SIZE 0x2C07
+
+#define PREEMPHASIS_USA 75
+#define PREEMPHASIS_EU 50
+#define PREEMPHASIS_DISABLED 0
+#define FMPE_USA 0x00
+#define FMPE_EU 0x01
+#define FMPE_DISABLED 0x02
+
+#define POWER_UP 0x01
+#define POWER_DOWN 0x00
+
+struct rds_info {
+ u32 pi;
+#define MAX_RDS_PTY 31
+ u32 pty;
+#define MAX_RDS_DEVIATION 90000
+ u32 deviation;
+/*
+ * PSNAME is known to be defined as 8 character sized (RDS Spec).
+ * However, there is receivers which scroll PSNAME 8xN sized.
+ */
+#define MAX_RDS_PS_NAME 96
+ u8 ps_name[MAX_RDS_PS_NAME + 1];
+/*
+ * MAX_RDS_RADIO_TEXT is known to be defined as 32 (2A group) or 64 (2B group)
+ * character sized (RDS Spec).
+ * However, there is receivers which scroll them as well.
+ */
+#define MAX_RDS_RADIO_TEXT 384
+ u8 radio_text[MAX_RDS_RADIO_TEXT + 1];
+ u32 enabled;
+};
+
+struct limiter_info {
+#define MAX_LIMITER_RELEASE_TIME 102390
+ u32 release_time;
+#define MAX_LIMITER_DEVIATION 90000
+ u32 deviation;
+ u32 enabled;
+};
+
+struct pilot_info {
+#define MAX_PILOT_DEVIATION 90000
+ u32 deviation;
+#define MAX_PILOT_FREQUENCY 19000
+ u32 frequency;
+ u32 enabled;
+};
+
+struct acomp_info {
+#define MAX_ACOMP_RELEASE_TIME 1000000
+ u32 release_time;
+#define MAX_ACOMP_ATTACK_TIME 5000
+ u32 attack_time;
+#define MAX_ACOMP_THRESHOLD 0
+#define MIN_ACOMP_THRESHOLD (-40)
+ s32 threshold;
+#define MAX_ACOMP_GAIN 20
+ u32 gain;
+ u32 enabled;
+};
+
+#define SI4763_NUM_SUPPLIES 2
+
+/*
+ * si4763_device - private data
+ */
+struct si4763_device {
+ /* v4l2_subdev and i2c reference (v4l2_subdev priv data) */
+ struct v4l2_subdev sd;
+ /* private data structures */
+ struct mutex mutex;
+ struct completion work;
+ struct rds_info rds_info;
+ struct limiter_info limiter_info;
+ struct pilot_info pilot_info;
+ struct acomp_info acomp_info;
+ struct regulator_bulk_data supplies[SI4763_NUM_SUPPLIES];
+ int gpio_reset;
+ u32 frequency;
+ u32 preemphasis;
+ u32 mute;
+ u32 power_level;
+ u32 power_state;
+ u32 antenna_capacitor;
+ u32 stereo;
+ u32 tune_rnl;
+ u8 users;
+ struct i2c_client *client;
+ struct video_device *videodev;
+};
+#endif /* ifndef SI4763_I2C_H */
projects / karo-tx-linux.git / commitdiff