![Julia Lawall](/assets/img/avatar_default.png)
Return a negative error code on failure. A simplified version of the semantic match that finds this problem is as follows: (http://coccinelle.lip6.fr/) // <smpl> @@ identifier ret; expression e1,e2; @@ ( if (\(ret < 0\|ret != 0\)) { ... return ret; } | ret = 0 ) ... when != ret = e1 when != &ret *if(...) { ... when != ret = e2 when forall return ret; } // </smpl> Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr> Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
1674 lines
42 KiB
C
1674 lines
42 KiB
C
/*
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* drivers/media/radio/si4713-i2c.c
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*
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* Silicon Labs Si4713 FM Radio Transmitter I2C commands.
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*
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* Copyright (c) 2009 Nokia Corporation
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* Contact: Eduardo Valentin <eduardo.valentin@nokia.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include <linux/completion.h>
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#include <linux/delay.h>
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#include <linux/err.h>
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#include <linux/interrupt.h>
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#include <linux/i2c.h>
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#include <linux/slab.h>
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#include <linux/gpio.h>
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#include <linux/module.h>
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#include <media/v4l2-device.h>
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#include <media/v4l2-ioctl.h>
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#include <media/v4l2-common.h>
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#include "si4713.h"
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/* module parameters */
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static int debug;
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module_param(debug, int, S_IRUGO | S_IWUSR);
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MODULE_PARM_DESC(debug, "Debug level (0 - 2)");
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MODULE_LICENSE("GPL");
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MODULE_AUTHOR("Eduardo Valentin <eduardo.valentin@nokia.com>");
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MODULE_DESCRIPTION("I2C driver for Si4713 FM Radio Transmitter");
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MODULE_VERSION("0.0.1");
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#define DEFAULT_RDS_PI 0x00
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#define DEFAULT_RDS_PTY 0x00
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#define DEFAULT_RDS_DEVIATION 0x00C8
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#define DEFAULT_RDS_PS_REPEAT_COUNT 0x0003
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#define DEFAULT_LIMITER_RTIME 0x1392
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#define DEFAULT_LIMITER_DEV 0x102CA
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#define DEFAULT_PILOT_FREQUENCY 0x4A38
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#define DEFAULT_PILOT_DEVIATION 0x1A5E
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#define DEFAULT_ACOMP_ATIME 0x0000
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#define DEFAULT_ACOMP_RTIME 0xF4240L
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#define DEFAULT_ACOMP_GAIN 0x0F
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#define DEFAULT_ACOMP_THRESHOLD (-0x28)
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#define DEFAULT_MUTE 0x01
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#define DEFAULT_POWER_LEVEL 88
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#define DEFAULT_FREQUENCY 8800
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#define DEFAULT_PREEMPHASIS FMPE_EU
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#define DEFAULT_TUNE_RNL 0xFF
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#define to_si4713_device(sd) container_of(sd, struct si4713_device, sd)
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/* frequency domain transformation (using times 10 to avoid floats) */
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#define FREQDEV_UNIT 100000
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#define FREQV4L2_MULTI 625
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#define si4713_to_v4l2(f) ((f * FREQDEV_UNIT) / FREQV4L2_MULTI)
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#define v4l2_to_si4713(f) ((f * FREQV4L2_MULTI) / FREQDEV_UNIT)
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#define FREQ_RANGE_LOW 7600
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#define FREQ_RANGE_HIGH 10800
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#define MAX_ARGS 7
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#define RDS_BLOCK 8
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#define RDS_BLOCK_CLEAR 0x03
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#define RDS_BLOCK_LOAD 0x04
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#define RDS_RADIOTEXT_2A 0x20
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#define RDS_RADIOTEXT_BLK_SIZE 4
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#define RDS_RADIOTEXT_INDEX_MAX 0x0F
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#define RDS_CARRIAGE_RETURN 0x0D
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#define rds_ps_nblocks(len) ((len / RDS_BLOCK) + (len % RDS_BLOCK ? 1 : 0))
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#define get_status_bit(p, b, m) (((p) & (m)) >> (b))
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#define set_bits(p, v, b, m) (((p) & ~(m)) | ((v) << (b)))
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#define ATTACK_TIME_UNIT 500
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#define POWER_OFF 0x00
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#define POWER_ON 0x01
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#define msb(x) ((u8)((u16) x >> 8))
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#define lsb(x) ((u8)((u16) x & 0x00FF))
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#define compose_u16(msb, lsb) (((u16)msb << 8) | lsb)
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#define check_command_failed(status) (!(status & SI4713_CTS) || \
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(status & SI4713_ERR))
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/* mute definition */
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#define set_mute(p) ((p & 1) | ((p & 1) << 1));
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#ifdef DEBUG
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#define DBG_BUFFER(device, message, buffer, size) \
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{ \
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int i; \
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char str[(size)*5]; \
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for (i = 0; i < size; i++) \
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sprintf(str + i * 5, " 0x%02x", buffer[i]); \
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v4l2_dbg(2, debug, device, "%s:%s\n", message, str); \
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}
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#else
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#define DBG_BUFFER(device, message, buffer, size)
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#endif
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/*
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* Values for limiter release time (sorted by second column)
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* device release
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* value time (us)
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*/
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static long limiter_times[] = {
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2000, 250,
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1000, 500,
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510, 1000,
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255, 2000,
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170, 3000,
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127, 4020,
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102, 5010,
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85, 6020,
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73, 7010,
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64, 7990,
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57, 8970,
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51, 10030,
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25, 20470,
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17, 30110,
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13, 39380,
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10, 51190,
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8, 63690,
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7, 73140,
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6, 85330,
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5, 102390,
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};
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/*
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* Values for audio compression release time (sorted by second column)
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* device release
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* value time (us)
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*/
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static unsigned long acomp_rtimes[] = {
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0, 100000,
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1, 200000,
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2, 350000,
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3, 525000,
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4, 1000000,
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};
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/*
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* Values for preemphasis (sorted by second column)
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* device preemphasis
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* value value (v4l2)
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*/
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static unsigned long preemphasis_values[] = {
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FMPE_DISABLED, V4L2_PREEMPHASIS_DISABLED,
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FMPE_EU, V4L2_PREEMPHASIS_50_uS,
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FMPE_USA, V4L2_PREEMPHASIS_75_uS,
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};
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static int usecs_to_dev(unsigned long usecs, unsigned long const array[],
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int size)
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{
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int i;
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int rval = -EINVAL;
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for (i = 0; i < size / 2; i++)
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if (array[(i * 2) + 1] >= usecs) {
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rval = array[i * 2];
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break;
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}
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return rval;
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}
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/* si4713_handler: IRQ handler, just complete work */
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static irqreturn_t si4713_handler(int irq, void *dev)
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{
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struct si4713_device *sdev = dev;
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v4l2_dbg(2, debug, &sdev->sd,
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"%s: sending signal to completion work.\n", __func__);
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complete(&sdev->work);
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return IRQ_HANDLED;
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}
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/*
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* si4713_send_command - sends a command to si4713 and waits its response
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* @sdev: si4713_device structure for the device we are communicating
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* @command: command id
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* @args: command arguments we are sending (up to 7)
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* @argn: actual size of @args
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* @response: buffer to place the expected response from the device (up to 15)
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* @respn: actual size of @response
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* @usecs: amount of time to wait before reading the response (in usecs)
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*/
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static int si4713_send_command(struct si4713_device *sdev, const u8 command,
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const u8 args[], const int argn,
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u8 response[], const int respn, const int usecs)
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{
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struct i2c_client *client = v4l2_get_subdevdata(&sdev->sd);
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unsigned long until_jiffies;
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u8 data1[MAX_ARGS + 1];
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int err;
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if (!client->adapter)
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return -ENODEV;
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/* First send the command and its arguments */
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data1[0] = command;
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memcpy(data1 + 1, args, argn);
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DBG_BUFFER(&sdev->sd, "Parameters", data1, argn + 1);
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err = i2c_master_send(client, data1, argn + 1);
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if (err != argn + 1) {
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v4l2_err(&sdev->sd, "Error while sending command 0x%02x\n",
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command);
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return err < 0 ? err : -EIO;
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}
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until_jiffies = jiffies + usecs_to_jiffies(usecs) + 1;
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/* Wait response from interrupt */
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if (client->irq) {
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if (!wait_for_completion_timeout(&sdev->work,
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usecs_to_jiffies(usecs) + 1))
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v4l2_warn(&sdev->sd,
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"(%s) Device took too much time to answer.\n",
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__func__);
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}
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do {
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err = i2c_master_recv(client, response, respn);
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if (err != respn) {
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v4l2_err(&sdev->sd,
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"Error %d while reading response for command 0x%02x\n",
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err, command);
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return err < 0 ? err : -EIO;
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}
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DBG_BUFFER(&sdev->sd, "Response", response, respn);
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if (!check_command_failed(response[0]))
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return 0;
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if (client->irq)
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return -EBUSY;
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if (usecs <= 1000)
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usleep_range(usecs, 1000);
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else
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usleep_range(1000, 2000);
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} while (time_is_after_jiffies(until_jiffies));
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return -EBUSY;
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}
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/*
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* si4713_read_property - reads a si4713 property
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* @sdev: si4713_device structure for the device we are communicating
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* @prop: property identification number
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* @pv: property value to be returned on success
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*/
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static int si4713_read_property(struct si4713_device *sdev, u16 prop, u32 *pv)
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{
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int err;
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u8 val[SI4713_GET_PROP_NRESP];
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/*
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* .First byte = 0
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* .Second byte = property's MSB
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* .Third byte = property's LSB
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*/
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const u8 args[SI4713_GET_PROP_NARGS] = {
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0x00,
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msb(prop),
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lsb(prop),
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};
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err = si4713_send_command(sdev, SI4713_CMD_GET_PROPERTY,
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args, ARRAY_SIZE(args), val,
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ARRAY_SIZE(val), DEFAULT_TIMEOUT);
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if (err < 0)
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return err;
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*pv = compose_u16(val[2], val[3]);
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v4l2_dbg(1, debug, &sdev->sd,
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"%s: property=0x%02x value=0x%02x status=0x%02x\n",
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__func__, prop, *pv, val[0]);
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return err;
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}
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/*
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* si4713_write_property - modifies a si4713 property
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* @sdev: si4713_device structure for the device we are communicating
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* @prop: property identification number
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* @val: new value for that property
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*/
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static int si4713_write_property(struct si4713_device *sdev, u16 prop, u16 val)
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{
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int rval;
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u8 resp[SI4713_SET_PROP_NRESP];
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/*
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* .First byte = 0
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* .Second byte = property's MSB
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* .Third byte = property's LSB
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* .Fourth byte = value's MSB
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* .Fifth byte = value's LSB
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*/
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const u8 args[SI4713_SET_PROP_NARGS] = {
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0x00,
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msb(prop),
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lsb(prop),
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msb(val),
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lsb(val),
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};
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rval = si4713_send_command(sdev, SI4713_CMD_SET_PROPERTY,
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args, ARRAY_SIZE(args),
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resp, ARRAY_SIZE(resp),
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DEFAULT_TIMEOUT);
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if (rval < 0)
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return rval;
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v4l2_dbg(1, debug, &sdev->sd,
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"%s: property=0x%02x value=0x%02x status=0x%02x\n",
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__func__, prop, val, resp[0]);
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/*
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* As there is no command response for SET_PROPERTY,
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* wait Tcomp time to finish before proceed, in order
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* to have property properly set.
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*/
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msleep(TIMEOUT_SET_PROPERTY);
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return rval;
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}
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/*
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* si4713_powerup - Powers the device up
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* @sdev: si4713_device structure for the device we are communicating
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*/
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static int si4713_powerup(struct si4713_device *sdev)
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{
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struct i2c_client *client = v4l2_get_subdevdata(&sdev->sd);
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int err;
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u8 resp[SI4713_PWUP_NRESP];
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/*
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* .First byte = Enabled interrupts and boot function
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* .Second byte = Input operation mode
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*/
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u8 args[SI4713_PWUP_NARGS] = {
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SI4713_PWUP_GPO2OEN | SI4713_PWUP_FUNC_TX,
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SI4713_PWUP_OPMOD_ANALOG,
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};
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if (sdev->power_state)
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return 0;
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if (sdev->vdd) {
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err = regulator_enable(sdev->vdd);
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if (err) {
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v4l2_err(&sdev->sd, "Failed to enable vdd: %d\n", err);
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return err;
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}
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}
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if (sdev->vio) {
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err = regulator_enable(sdev->vio);
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if (err) {
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v4l2_err(&sdev->sd, "Failed to enable vio: %d\n", err);
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return err;
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}
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}
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if (sdev->gpio_reset) {
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udelay(50);
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gpiod_set_value(sdev->gpio_reset, 1);
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}
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if (client->irq)
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args[0] |= SI4713_PWUP_CTSIEN;
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err = si4713_send_command(sdev, SI4713_CMD_POWER_UP,
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args, ARRAY_SIZE(args),
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resp, ARRAY_SIZE(resp),
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TIMEOUT_POWER_UP);
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if (!err) {
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v4l2_dbg(1, debug, &sdev->sd, "Powerup response: 0x%02x\n",
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resp[0]);
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v4l2_dbg(1, debug, &sdev->sd, "Device in power up mode\n");
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sdev->power_state = POWER_ON;
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if (client->irq)
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err = si4713_write_property(sdev, SI4713_GPO_IEN,
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SI4713_STC_INT | SI4713_CTS);
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return err;
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}
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gpiod_set_value(sdev->gpio_reset, 0);
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if (sdev->vdd) {
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err = regulator_disable(sdev->vdd);
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if (err)
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v4l2_err(&sdev->sd, "Failed to disable vdd: %d\n", err);
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}
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if (sdev->vio) {
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err = regulator_disable(sdev->vio);
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if (err)
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v4l2_err(&sdev->sd, "Failed to disable vio: %d\n", err);
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}
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return err;
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}
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/*
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* si4713_powerdown - Powers the device down
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* @sdev: si4713_device structure for the device we are communicating
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*/
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static int si4713_powerdown(struct si4713_device *sdev)
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{
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int err;
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u8 resp[SI4713_PWDN_NRESP];
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if (!sdev->power_state)
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return 0;
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err = si4713_send_command(sdev, SI4713_CMD_POWER_DOWN,
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NULL, 0,
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resp, ARRAY_SIZE(resp),
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DEFAULT_TIMEOUT);
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if (!err) {
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v4l2_dbg(1, debug, &sdev->sd, "Power down response: 0x%02x\n",
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resp[0]);
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v4l2_dbg(1, debug, &sdev->sd, "Device in reset mode\n");
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if (sdev->gpio_reset)
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gpiod_set_value(sdev->gpio_reset, 0);
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if (sdev->vdd) {
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err = regulator_disable(sdev->vdd);
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if (err) {
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v4l2_err(&sdev->sd,
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"Failed to disable vdd: %d\n", err);
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}
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}
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if (sdev->vio) {
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err = regulator_disable(sdev->vio);
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if (err) {
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v4l2_err(&sdev->sd,
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"Failed to disable vio: %d\n", err);
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}
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}
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sdev->power_state = POWER_OFF;
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}
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return err;
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}
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/*
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* si4713_checkrev - Checks if we are treating a device with the correct rev.
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* @sdev: si4713_device structure for the device we are communicating
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*/
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static int si4713_checkrev(struct si4713_device *sdev)
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{
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struct i2c_client *client = v4l2_get_subdevdata(&sdev->sd);
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int rval;
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u8 resp[SI4713_GETREV_NRESP];
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rval = si4713_send_command(sdev, SI4713_CMD_GET_REV,
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NULL, 0,
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resp, ARRAY_SIZE(resp),
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DEFAULT_TIMEOUT);
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if (rval < 0)
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return rval;
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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 0x%X\n", resp[1]);
|
|
rval = -EINVAL;
|
|
}
|
|
return rval;
|
|
}
|
|
|
|
/*
|
|
* si4713_wait_stc - Waits STC interrupt and clears status bits. Useful
|
|
* 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);
|
|
u8 resp[SI4713_GET_STATUS_NRESP];
|
|
unsigned long start_jiffies = jiffies;
|
|
int err;
|
|
|
|
if (client->irq &&
|
|
!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__);
|
|
|
|
for (;;) {
|
|
/* Clear status bits */
|
|
err = si4713_send_command(sdev, SI4713_CMD_GET_INT_STATUS,
|
|
NULL, 0,
|
|
resp, ARRAY_SIZE(resp),
|
|
DEFAULT_TIMEOUT);
|
|
/* The USB device returns errors when it waits for the
|
|
* STC bit to be set. Hence polling */
|
|
if (err >= 0) {
|
|
v4l2_dbg(1, debug, &sdev->sd,
|
|
"%s: status bits: 0x%02x\n", __func__, resp[0]);
|
|
|
|
if (resp[0] & SI4713_STC_INT)
|
|
return 0;
|
|
}
|
|
if (jiffies_to_usecs(jiffies - start_jiffies) > usecs)
|
|
return err < 0 ? err : -EIO;
|
|
/* We sleep here for 3-4 ms in order to avoid flooding the device
|
|
* with USB requests. The si4713 USB driver was developed
|
|
* by reverse engineering the Windows USB driver. The windows
|
|
* driver also has a ~2.5 ms delay between responses. */
|
|
usleep_range(3000, 4000);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* 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 120 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 - 120 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
|
|
*/
|
|
u8 args[SI4713_TXPWR_NARGS] = {
|
|
0x00,
|
|
0x00,
|
|
power,
|
|
antcap,
|
|
};
|
|
|
|
/* Map power values 1-87 to MIN_POWER (88) */
|
|
if (power > 0 && power < SI4713_MIN_POWER)
|
|
args[2] = power = SI4713_MIN_POWER;
|
|
|
|
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)
|
|
{
|
|
if (value)
|
|
return si4713_powerup(sdev);
|
|
return si4713_powerdown(sdev);
|
|
}
|
|
|
|
static int si4713_set_mute(struct si4713_device *sdev, u16 mute)
|
|
{
|
|
int rval = 0;
|
|
|
|
mute = set_mute(mute);
|
|
|
|
if (sdev->power_state)
|
|
rval = si4713_write_property(sdev,
|
|
SI4713_TX_LINE_INPUT_MUTE, mute);
|
|
|
|
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);
|
|
|
|
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)
|
|
return rval;
|
|
}
|
|
|
|
/* 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)
|
|
return rval;
|
|
|
|
rval = si4713_write_property(sdev,
|
|
SI4713_TX_RDS_PS_REPEAT_COUNT,
|
|
DEFAULT_RDS_PS_REPEAT_COUNT * 2);
|
|
if (rval < 0)
|
|
return rval;
|
|
}
|
|
|
|
return rval;
|
|
}
|
|
|
|
static int si4713_set_rds_radio_text(struct si4713_device *sdev, const char *rt)
|
|
{
|
|
static const char cr[RDS_RADIOTEXT_BLK_SIZE] = { RDS_CARRIAGE_RETURN, 0 };
|
|
int rval = 0, i;
|
|
u16 t_index = 0;
|
|
u8 b_index = 0, cr_inserted = 0;
|
|
s8 left;
|
|
|
|
if (!sdev->power_state)
|
|
return rval;
|
|
|
|
rval = si4713_tx_rds_buff(sdev, RDS_BLOCK_CLEAR, 0, 0, 0, &left);
|
|
if (rval < 0)
|
|
return rval;
|
|
|
|
if (!strlen(rt))
|
|
return rval;
|
|
|
|
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 = cr;
|
|
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)
|
|
return rval;
|
|
|
|
t_index += RDS_RADIOTEXT_BLK_SIZE;
|
|
|
|
if (cr_inserted)
|
|
break;
|
|
} while (left > 0);
|
|
|
|
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;
|
|
|
|
/* TODO: check that power_level and antenna_capacitor really are not
|
|
changed by the hardware. If they are, then these controls should become
|
|
volatiles.
|
|
sdev->power_level = p;
|
|
sdev->antenna_capacitor = a;*/
|
|
sdev->tune_rnl = n;
|
|
|
|
exit:
|
|
return rval;
|
|
}
|
|
|
|
static int si4713_choose_econtrol_action(struct si4713_device *sdev, u32 id,
|
|
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;
|
|
break;
|
|
case V4L2_CID_AUDIO_COMPRESSION_THRESHOLD:
|
|
*property = SI4713_TX_ACOMP_THRESHOLD;
|
|
*mul = 1;
|
|
break;
|
|
case V4L2_CID_AUDIO_COMPRESSION_GAIN:
|
|
*property = SI4713_TX_ACOMP_GAIN;
|
|
*mul = 1;
|
|
break;
|
|
case V4L2_CID_PILOT_TONE_FREQUENCY:
|
|
*property = SI4713_TX_PILOT_FREQUENCY;
|
|
*mul = 1;
|
|
break;
|
|
case V4L2_CID_AUDIO_COMPRESSION_ATTACK_TIME:
|
|
*property = SI4713_TX_ACOMP_ATTACK_TIME;
|
|
*mul = ATTACK_TIME_UNIT;
|
|
break;
|
|
case V4L2_CID_PILOT_TONE_DEVIATION:
|
|
*property = SI4713_TX_PILOT_DEVIATION;
|
|
*mul = 10;
|
|
break;
|
|
case V4L2_CID_AUDIO_LIMITER_DEVIATION:
|
|
*property = SI4713_TX_AUDIO_DEVIATION;
|
|
*mul = 10;
|
|
break;
|
|
case V4L2_CID_RDS_TX_DEVIATION:
|
|
*property = SI4713_TX_RDS_DEVIATION;
|
|
*mul = 1;
|
|
break;
|
|
|
|
case V4L2_CID_RDS_TX_PTY:
|
|
*property = SI4713_TX_RDS_PS_MISC;
|
|
*bit = 5;
|
|
*mask = 0x1F << 5;
|
|
break;
|
|
case V4L2_CID_RDS_TX_DYNAMIC_PTY:
|
|
*property = SI4713_TX_RDS_PS_MISC;
|
|
*bit = 15;
|
|
*mask = 1 << 15;
|
|
break;
|
|
case V4L2_CID_RDS_TX_COMPRESSED:
|
|
*property = SI4713_TX_RDS_PS_MISC;
|
|
*bit = 14;
|
|
*mask = 1 << 14;
|
|
break;
|
|
case V4L2_CID_RDS_TX_ARTIFICIAL_HEAD:
|
|
*property = SI4713_TX_RDS_PS_MISC;
|
|
*bit = 13;
|
|
*mask = 1 << 13;
|
|
break;
|
|
case V4L2_CID_RDS_TX_MONO_STEREO:
|
|
*property = SI4713_TX_RDS_PS_MISC;
|
|
*bit = 12;
|
|
*mask = 1 << 12;
|
|
break;
|
|
case V4L2_CID_RDS_TX_TRAFFIC_PROGRAM:
|
|
*property = SI4713_TX_RDS_PS_MISC;
|
|
*bit = 10;
|
|
*mask = 1 << 10;
|
|
break;
|
|
case V4L2_CID_RDS_TX_TRAFFIC_ANNOUNCEMENT:
|
|
*property = SI4713_TX_RDS_PS_MISC;
|
|
*bit = 4;
|
|
*mask = 1 << 4;
|
|
break;
|
|
case V4L2_CID_RDS_TX_MUSIC_SPEECH:
|
|
*property = SI4713_TX_RDS_PS_MISC;
|
|
*bit = 3;
|
|
*mask = 1 << 3;
|
|
break;
|
|
case V4L2_CID_AUDIO_LIMITER_ENABLED:
|
|
*property = SI4713_TX_ACOMP_ENABLE;
|
|
*bit = 1;
|
|
*mask = 1 << 1;
|
|
break;
|
|
case V4L2_CID_AUDIO_COMPRESSION_ENABLED:
|
|
*property = SI4713_TX_ACOMP_ENABLE;
|
|
*bit = 0;
|
|
*mask = 1 << 0;
|
|
break;
|
|
case V4L2_CID_PILOT_TONE_ENABLED:
|
|
*property = SI4713_TX_COMPONENT_ENABLE;
|
|
*bit = 0;
|
|
*mask = 1 << 0;
|
|
break;
|
|
|
|
case V4L2_CID_AUDIO_LIMITER_RELEASE_TIME:
|
|
*property = SI4713_TX_LIMITER_RELEASE_TIME;
|
|
*table = limiter_times;
|
|
*size = ARRAY_SIZE(limiter_times);
|
|
break;
|
|
case V4L2_CID_AUDIO_COMPRESSION_RELEASE_TIME:
|
|
*property = SI4713_TX_ACOMP_RELEASE_TIME;
|
|
*table = acomp_rtimes;
|
|
*size = ARRAY_SIZE(acomp_rtimes);
|
|
break;
|
|
case V4L2_CID_TUNE_PREEMPHASIS:
|
|
*property = SI4713_TX_PREEMPHASIS;
|
|
*table = preemphasis_values;
|
|
*size = ARRAY_SIZE(preemphasis_values);
|
|
break;
|
|
|
|
default:
|
|
rval = -EINVAL;
|
|
break;
|
|
}
|
|
|
|
return rval;
|
|
}
|
|
|
|
static int si4713_s_frequency(struct v4l2_subdev *sd, const struct v4l2_frequency *f);
|
|
static int si4713_s_modulator(struct v4l2_subdev *sd, const 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_frequency f;
|
|
struct v4l2_modulator vm;
|
|
int rval;
|
|
|
|
/* Device procedure needs to set frequency first */
|
|
f.tuner = 0;
|
|
f.frequency = sdev->frequency ? sdev->frequency : DEFAULT_FREQUENCY;
|
|
f.frequency = si4713_to_v4l2(f.frequency);
|
|
rval = si4713_s_frequency(&sdev->sd, &f);
|
|
|
|
vm.index = 0;
|
|
if (sdev->stereo)
|
|
vm.txsubchans = V4L2_TUNER_SUB_STEREO;
|
|
else
|
|
vm.txsubchans = V4L2_TUNER_SUB_MONO;
|
|
if (sdev->rds_enabled)
|
|
vm.txsubchans |= V4L2_TUNER_SUB_RDS;
|
|
si4713_s_modulator(&sdev->sd, &vm);
|
|
|
|
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)
|
|
return rval;
|
|
|
|
rval = si4713_checkrev(sdev);
|
|
if (rval < 0)
|
|
return rval;
|
|
|
|
rval = si4713_set_power_state(sdev, POWER_OFF);
|
|
if (rval < 0)
|
|
return rval;
|
|
|
|
sdev->frequency = DEFAULT_FREQUENCY;
|
|
sdev->stereo = 1;
|
|
sdev->tune_rnl = DEFAULT_TUNE_RNL;
|
|
return 0;
|
|
}
|
|
|
|
/* si4713_s_ctrl - set the value of a control */
|
|
static int si4713_s_ctrl(struct v4l2_ctrl *ctrl)
|
|
{
|
|
struct si4713_device *sdev =
|
|
container_of(ctrl->handler, struct si4713_device, ctrl_handler);
|
|
u32 val = 0;
|
|
s32 bit = 0, mask = 0;
|
|
u16 property = 0;
|
|
int mul = 0;
|
|
unsigned long *table = NULL;
|
|
int size = 0;
|
|
bool force = false;
|
|
int c;
|
|
int ret = 0;
|
|
|
|
if (ctrl->id != V4L2_CID_AUDIO_MUTE)
|
|
return -EINVAL;
|
|
if (ctrl->is_new) {
|
|
if (ctrl->val) {
|
|
ret = si4713_set_mute(sdev, ctrl->val);
|
|
if (!ret)
|
|
ret = si4713_set_power_state(sdev, POWER_DOWN);
|
|
return ret;
|
|
}
|
|
ret = si4713_set_power_state(sdev, POWER_UP);
|
|
if (!ret)
|
|
ret = si4713_set_mute(sdev, ctrl->val);
|
|
if (!ret)
|
|
ret = si4713_setup(sdev);
|
|
if (ret)
|
|
return ret;
|
|
force = true;
|
|
}
|
|
|
|
if (!sdev->power_state)
|
|
return 0;
|
|
|
|
for (c = 1; !ret && c < ctrl->ncontrols; c++) {
|
|
ctrl = ctrl->cluster[c];
|
|
|
|
if (!force && !ctrl->is_new)
|
|
continue;
|
|
|
|
switch (ctrl->id) {
|
|
case V4L2_CID_RDS_TX_PS_NAME:
|
|
ret = si4713_set_rds_ps_name(sdev, ctrl->p_new.p_char);
|
|
break;
|
|
|
|
case V4L2_CID_RDS_TX_RADIO_TEXT:
|
|
ret = si4713_set_rds_radio_text(sdev, ctrl->p_new.p_char);
|
|
break;
|
|
|
|
case V4L2_CID_TUNE_ANTENNA_CAPACITOR:
|
|
/* don't handle this control if we force setting all
|
|
* controls since in that case it will be handled by
|
|
* V4L2_CID_TUNE_POWER_LEVEL. */
|
|
if (force)
|
|
break;
|
|
/* fall through */
|
|
case V4L2_CID_TUNE_POWER_LEVEL:
|
|
ret = si4713_tx_tune_power(sdev,
|
|
sdev->tune_pwr_level->val, sdev->tune_ant_cap->val);
|
|
if (!ret) {
|
|
/* Make sure we don't set this twice */
|
|
sdev->tune_ant_cap->is_new = false;
|
|
sdev->tune_pwr_level->is_new = false;
|
|
}
|
|
break;
|
|
|
|
case V4L2_CID_RDS_TX_ALT_FREQS_ENABLE:
|
|
case V4L2_CID_RDS_TX_ALT_FREQS:
|
|
if (sdev->rds_alt_freqs_enable->val) {
|
|
val = sdev->rds_alt_freqs->p_new.p_u32[0];
|
|
val = val / 100 - 876 + 0xe101;
|
|
} else {
|
|
val = 0xe0e0;
|
|
}
|
|
ret = si4713_write_property(sdev, SI4713_TX_RDS_PS_AF, val);
|
|
break;
|
|
|
|
default:
|
|
ret = si4713_choose_econtrol_action(sdev, ctrl->id, &bit,
|
|
&mask, &property, &mul, &table, &size);
|
|
if (ret < 0)
|
|
break;
|
|
|
|
val = ctrl->val;
|
|
if (mul) {
|
|
val = val / mul;
|
|
} else if (table) {
|
|
ret = usecs_to_dev(val, table, size);
|
|
if (ret < 0)
|
|
break;
|
|
val = ret;
|
|
ret = 0;
|
|
}
|
|
|
|
if (mask) {
|
|
ret = si4713_read_property(sdev, property, &val);
|
|
if (ret < 0)
|
|
break;
|
|
val = set_bits(val, ctrl->val, bit, mask);
|
|
}
|
|
|
|
ret = si4713_write_property(sdev, property, val);
|
|
if (ret < 0)
|
|
break;
|
|
if (mask)
|
|
val = ctrl->val;
|
|
break;
|
|
}
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
/* si4713_ioctl - deal with private ioctls (only rnl for now) */
|
|
static 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;
|
|
|
|
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)
|
|
return rval;
|
|
/* get results from tune status */
|
|
rval = si4713_update_tune_status(sdev);
|
|
if (rval < 0)
|
|
return rval;
|
|
}
|
|
rnl->rnl = sdev->tune_rnl;
|
|
break;
|
|
|
|
default:
|
|
/* nothing */
|
|
rval = -ENOIOCTLCMD;
|
|
}
|
|
|
|
return rval;
|
|
}
|
|
|
|
/* 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)
|
|
return -ENODEV;
|
|
|
|
if (vm->index > 0)
|
|
return -EINVAL;
|
|
|
|
strncpy(vm->name, "FM Modulator", 32);
|
|
vm->capability = V4L2_TUNER_CAP_STEREO | V4L2_TUNER_CAP_LOW |
|
|
V4L2_TUNER_CAP_RDS | V4L2_TUNER_CAP_RDS_CONTROLS;
|
|
|
|
/* Report current frequency range limits */
|
|
vm->rangelow = si4713_to_v4l2(FREQ_RANGE_LOW);
|
|
vm->rangehigh = si4713_to_v4l2(FREQ_RANGE_HIGH);
|
|
|
|
if (sdev->power_state) {
|
|
u32 comp_en = 0;
|
|
|
|
rval = si4713_read_property(sdev, SI4713_TX_COMPONENT_ENABLE,
|
|
&comp_en);
|
|
if (rval < 0)
|
|
return rval;
|
|
|
|
sdev->stereo = get_status_bit(comp_en, 1, 1 << 1);
|
|
}
|
|
|
|
/* 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_enabled)
|
|
vm->txsubchans |= V4L2_TUNER_SUB_RDS;
|
|
else
|
|
vm->txsubchans &= ~V4L2_TUNER_SUB_RDS;
|
|
|
|
return rval;
|
|
}
|
|
|
|
/* si4713_s_modulator - set modulator attributes */
|
|
static int si4713_s_modulator(struct v4l2_subdev *sd, const struct v4l2_modulator *vm)
|
|
{
|
|
struct si4713_device *sdev = to_si4713_device(sd);
|
|
int rval = 0;
|
|
u16 stereo, rds;
|
|
u32 p;
|
|
|
|
if (!sdev)
|
|
return -ENODEV;
|
|
|
|
if (vm->index > 0)
|
|
return -EINVAL;
|
|
|
|
/* 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
|
|
return -EINVAL;
|
|
|
|
rds = !!(vm->txsubchans & V4L2_TUNER_SUB_RDS);
|
|
|
|
if (sdev->power_state) {
|
|
rval = si4713_read_property(sdev,
|
|
SI4713_TX_COMPONENT_ENABLE, &p);
|
|
if (rval < 0)
|
|
return rval;
|
|
|
|
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)
|
|
return rval;
|
|
}
|
|
|
|
sdev->stereo = stereo;
|
|
sdev->rds_enabled = rds;
|
|
|
|
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;
|
|
|
|
if (f->tuner)
|
|
return -EINVAL;
|
|
|
|
if (sdev->power_state) {
|
|
u16 freq;
|
|
u8 p, a, n;
|
|
|
|
rval = si4713_tx_tune_status(sdev, 0x00, &freq, &p, &a, &n);
|
|
if (rval < 0)
|
|
return rval;
|
|
|
|
sdev->frequency = freq;
|
|
}
|
|
|
|
f->frequency = si4713_to_v4l2(sdev->frequency);
|
|
|
|
return rval;
|
|
}
|
|
|
|
/* si4713_s_frequency - set tuner or modulator radio frequency */
|
|
static int si4713_s_frequency(struct v4l2_subdev *sd, const struct v4l2_frequency *f)
|
|
{
|
|
struct si4713_device *sdev = to_si4713_device(sd);
|
|
int rval = 0;
|
|
u16 frequency = v4l2_to_si4713(f->frequency);
|
|
|
|
if (f->tuner)
|
|
return -EINVAL;
|
|
|
|
/* Check frequency range */
|
|
frequency = clamp_t(u16, frequency, FREQ_RANGE_LOW, FREQ_RANGE_HIGH);
|
|
|
|
if (sdev->power_state) {
|
|
rval = si4713_tx_tune_freq(sdev, frequency);
|
|
if (rval < 0)
|
|
return rval;
|
|
frequency = rval;
|
|
rval = 0;
|
|
}
|
|
sdev->frequency = frequency;
|
|
|
|
return rval;
|
|
}
|
|
|
|
static const struct v4l2_ctrl_ops si4713_ctrl_ops = {
|
|
.s_ctrl = si4713_s_ctrl,
|
|
};
|
|
|
|
static const struct v4l2_subdev_core_ops si4713_subdev_core_ops = {
|
|
.ioctl = si4713_ioctl,
|
|
};
|
|
|
|
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,
|
|
};
|
|
|
|
static const struct v4l2_ctrl_config si4713_alt_freqs_ctrl = {
|
|
.id = V4L2_CID_RDS_TX_ALT_FREQS,
|
|
.type = V4L2_CTRL_TYPE_U32,
|
|
.min = 87600,
|
|
.max = 107900,
|
|
.step = 100,
|
|
.def = 87600,
|
|
.dims = { 1 },
|
|
.elem_size = sizeof(u32),
|
|
};
|
|
|
|
/*
|
|
* 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;
|
|
struct v4l2_ctrl_handler *hdl;
|
|
struct si4713_platform_data *pdata = client->dev.platform_data;
|
|
struct device_node *np = client->dev.of_node;
|
|
struct radio_si4713_platform_data si4713_pdev_pdata;
|
|
struct platform_device *si4713_pdev;
|
|
int rval;
|
|
|
|
sdev = devm_kzalloc(&client->dev, sizeof(*sdev), GFP_KERNEL);
|
|
if (!sdev) {
|
|
dev_err(&client->dev, "Failed to alloc video device.\n");
|
|
rval = -ENOMEM;
|
|
goto exit;
|
|
}
|
|
|
|
sdev->gpio_reset = devm_gpiod_get_optional(&client->dev, "reset",
|
|
GPIOD_OUT_LOW);
|
|
if (IS_ERR(sdev->gpio_reset)) {
|
|
rval = PTR_ERR(sdev->gpio_reset);
|
|
dev_err(&client->dev, "Failed to request gpio: %d\n", rval);
|
|
goto exit;
|
|
}
|
|
|
|
sdev->vdd = devm_regulator_get_optional(&client->dev, "vdd");
|
|
if (IS_ERR(sdev->vdd)) {
|
|
rval = PTR_ERR(sdev->vdd);
|
|
if (rval == -EPROBE_DEFER)
|
|
goto exit;
|
|
|
|
dev_dbg(&client->dev, "no vdd regulator found: %d\n", rval);
|
|
sdev->vdd = NULL;
|
|
}
|
|
|
|
sdev->vio = devm_regulator_get_optional(&client->dev, "vio");
|
|
if (IS_ERR(sdev->vio)) {
|
|
rval = PTR_ERR(sdev->vio);
|
|
if (rval == -EPROBE_DEFER)
|
|
goto exit;
|
|
|
|
dev_dbg(&client->dev, "no vio regulator found: %d\n", rval);
|
|
sdev->vio = NULL;
|
|
}
|
|
|
|
v4l2_i2c_subdev_init(&sdev->sd, client, &si4713_subdev_ops);
|
|
|
|
init_completion(&sdev->work);
|
|
|
|
hdl = &sdev->ctrl_handler;
|
|
v4l2_ctrl_handler_init(hdl, 20);
|
|
sdev->mute = v4l2_ctrl_new_std(hdl, &si4713_ctrl_ops,
|
|
V4L2_CID_AUDIO_MUTE, 0, 1, 1, DEFAULT_MUTE);
|
|
|
|
sdev->rds_pi = v4l2_ctrl_new_std(hdl, &si4713_ctrl_ops,
|
|
V4L2_CID_RDS_TX_PI, 0, 0xffff, 1, DEFAULT_RDS_PI);
|
|
sdev->rds_pty = v4l2_ctrl_new_std(hdl, &si4713_ctrl_ops,
|
|
V4L2_CID_RDS_TX_PTY, 0, 31, 1, DEFAULT_RDS_PTY);
|
|
sdev->rds_compressed = v4l2_ctrl_new_std(hdl, &si4713_ctrl_ops,
|
|
V4L2_CID_RDS_TX_COMPRESSED, 0, 1, 1, 0);
|
|
sdev->rds_art_head = v4l2_ctrl_new_std(hdl, &si4713_ctrl_ops,
|
|
V4L2_CID_RDS_TX_ARTIFICIAL_HEAD, 0, 1, 1, 0);
|
|
sdev->rds_stereo = v4l2_ctrl_new_std(hdl, &si4713_ctrl_ops,
|
|
V4L2_CID_RDS_TX_MONO_STEREO, 0, 1, 1, 1);
|
|
sdev->rds_tp = v4l2_ctrl_new_std(hdl, &si4713_ctrl_ops,
|
|
V4L2_CID_RDS_TX_TRAFFIC_PROGRAM, 0, 1, 1, 0);
|
|
sdev->rds_ta = v4l2_ctrl_new_std(hdl, &si4713_ctrl_ops,
|
|
V4L2_CID_RDS_TX_TRAFFIC_ANNOUNCEMENT, 0, 1, 1, 0);
|
|
sdev->rds_ms = v4l2_ctrl_new_std(hdl, &si4713_ctrl_ops,
|
|
V4L2_CID_RDS_TX_MUSIC_SPEECH, 0, 1, 1, 1);
|
|
sdev->rds_dyn_pty = v4l2_ctrl_new_std(hdl, &si4713_ctrl_ops,
|
|
V4L2_CID_RDS_TX_DYNAMIC_PTY, 0, 1, 1, 0);
|
|
sdev->rds_alt_freqs_enable = v4l2_ctrl_new_std(hdl, &si4713_ctrl_ops,
|
|
V4L2_CID_RDS_TX_ALT_FREQS_ENABLE, 0, 1, 1, 0);
|
|
sdev->rds_alt_freqs = v4l2_ctrl_new_custom(hdl, &si4713_alt_freqs_ctrl, NULL);
|
|
sdev->rds_deviation = v4l2_ctrl_new_std(hdl, &si4713_ctrl_ops,
|
|
V4L2_CID_RDS_TX_DEVIATION, 0, MAX_RDS_DEVIATION,
|
|
10, DEFAULT_RDS_DEVIATION);
|
|
/*
|
|
* Report step as 8. From RDS spec, psname
|
|
* should be 8. But there are receivers which scroll strings
|
|
* sized as 8xN.
|
|
*/
|
|
sdev->rds_ps_name = v4l2_ctrl_new_std(hdl, &si4713_ctrl_ops,
|
|
V4L2_CID_RDS_TX_PS_NAME, 0, MAX_RDS_PS_NAME, 8, 0);
|
|
/*
|
|
* 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.
|
|
*/
|
|
sdev->rds_radio_text = v4l2_ctrl_new_std(hdl, &si4713_ctrl_ops,
|
|
V4L2_CID_RDS_TX_RADIO_TEXT, 0, MAX_RDS_RADIO_TEXT, 32, 0);
|
|
|
|
sdev->limiter_enabled = v4l2_ctrl_new_std(hdl, &si4713_ctrl_ops,
|
|
V4L2_CID_AUDIO_LIMITER_ENABLED, 0, 1, 1, 1);
|
|
sdev->limiter_release_time = v4l2_ctrl_new_std(hdl, &si4713_ctrl_ops,
|
|
V4L2_CID_AUDIO_LIMITER_RELEASE_TIME, 250,
|
|
MAX_LIMITER_RELEASE_TIME, 10, DEFAULT_LIMITER_RTIME);
|
|
sdev->limiter_deviation = v4l2_ctrl_new_std(hdl, &si4713_ctrl_ops,
|
|
V4L2_CID_AUDIO_LIMITER_DEVIATION, 0,
|
|
MAX_LIMITER_DEVIATION, 10, DEFAULT_LIMITER_DEV);
|
|
|
|
sdev->compression_enabled = v4l2_ctrl_new_std(hdl, &si4713_ctrl_ops,
|
|
V4L2_CID_AUDIO_COMPRESSION_ENABLED, 0, 1, 1, 1);
|
|
sdev->compression_gain = v4l2_ctrl_new_std(hdl, &si4713_ctrl_ops,
|
|
V4L2_CID_AUDIO_COMPRESSION_GAIN, 0, MAX_ACOMP_GAIN, 1,
|
|
DEFAULT_ACOMP_GAIN);
|
|
sdev->compression_threshold = v4l2_ctrl_new_std(hdl, &si4713_ctrl_ops,
|
|
V4L2_CID_AUDIO_COMPRESSION_THRESHOLD,
|
|
MIN_ACOMP_THRESHOLD, MAX_ACOMP_THRESHOLD, 1,
|
|
DEFAULT_ACOMP_THRESHOLD);
|
|
sdev->compression_attack_time = v4l2_ctrl_new_std(hdl, &si4713_ctrl_ops,
|
|
V4L2_CID_AUDIO_COMPRESSION_ATTACK_TIME, 0,
|
|
MAX_ACOMP_ATTACK_TIME, 500, DEFAULT_ACOMP_ATIME);
|
|
sdev->compression_release_time = v4l2_ctrl_new_std(hdl, &si4713_ctrl_ops,
|
|
V4L2_CID_AUDIO_COMPRESSION_RELEASE_TIME, 100000,
|
|
MAX_ACOMP_RELEASE_TIME, 100000, DEFAULT_ACOMP_RTIME);
|
|
|
|
sdev->pilot_tone_enabled = v4l2_ctrl_new_std(hdl, &si4713_ctrl_ops,
|
|
V4L2_CID_PILOT_TONE_ENABLED, 0, 1, 1, 1);
|
|
sdev->pilot_tone_deviation = v4l2_ctrl_new_std(hdl, &si4713_ctrl_ops,
|
|
V4L2_CID_PILOT_TONE_DEVIATION, 0, MAX_PILOT_DEVIATION,
|
|
10, DEFAULT_PILOT_DEVIATION);
|
|
sdev->pilot_tone_freq = v4l2_ctrl_new_std(hdl, &si4713_ctrl_ops,
|
|
V4L2_CID_PILOT_TONE_FREQUENCY, 0, MAX_PILOT_FREQUENCY,
|
|
1, DEFAULT_PILOT_FREQUENCY);
|
|
|
|
sdev->tune_preemphasis = v4l2_ctrl_new_std_menu(hdl, &si4713_ctrl_ops,
|
|
V4L2_CID_TUNE_PREEMPHASIS,
|
|
V4L2_PREEMPHASIS_75_uS, 0, V4L2_PREEMPHASIS_50_uS);
|
|
sdev->tune_pwr_level = v4l2_ctrl_new_std(hdl, &si4713_ctrl_ops,
|
|
V4L2_CID_TUNE_POWER_LEVEL, 0, SI4713_MAX_POWER,
|
|
1, DEFAULT_POWER_LEVEL);
|
|
sdev->tune_ant_cap = v4l2_ctrl_new_std(hdl, &si4713_ctrl_ops,
|
|
V4L2_CID_TUNE_ANTENNA_CAPACITOR, 0, SI4713_MAX_ANTCAP,
|
|
1, 0);
|
|
|
|
if (hdl->error) {
|
|
rval = hdl->error;
|
|
goto free_ctrls;
|
|
}
|
|
v4l2_ctrl_cluster(29, &sdev->mute);
|
|
sdev->sd.ctrl_handler = hdl;
|
|
|
|
if (client->irq) {
|
|
rval = devm_request_irq(&client->dev, client->irq,
|
|
si4713_handler, IRQF_TRIGGER_FALLING,
|
|
client->name, sdev);
|
|
if (rval < 0) {
|
|
v4l2_err(&sdev->sd, "Could not request IRQ\n");
|
|
goto free_ctrls;
|
|
}
|
|
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_ctrls;
|
|
}
|
|
|
|
if (!np && (!pdata || !pdata->is_platform_device))
|
|
return 0;
|
|
|
|
si4713_pdev = platform_device_alloc("radio-si4713", -1);
|
|
if (!si4713_pdev) {
|
|
rval = -ENOMEM;
|
|
goto put_main_pdev;
|
|
}
|
|
|
|
si4713_pdev_pdata.subdev = client;
|
|
rval = platform_device_add_data(si4713_pdev, &si4713_pdev_pdata,
|
|
sizeof(si4713_pdev_pdata));
|
|
if (rval)
|
|
goto put_main_pdev;
|
|
|
|
rval = platform_device_add(si4713_pdev);
|
|
if (rval)
|
|
goto put_main_pdev;
|
|
|
|
sdev->pd = si4713_pdev;
|
|
|
|
return 0;
|
|
|
|
put_main_pdev:
|
|
platform_device_put(si4713_pdev);
|
|
v4l2_device_unregister_subdev(&sdev->sd);
|
|
free_ctrls:
|
|
v4l2_ctrl_handler_free(hdl);
|
|
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);
|
|
|
|
platform_device_unregister(sdev->pd);
|
|
|
|
if (sdev->power_state)
|
|
si4713_set_power_state(sdev, POWER_DOWN);
|
|
|
|
v4l2_device_unregister_subdev(sd);
|
|
v4l2_ctrl_handler_free(sd->ctrl_handler);
|
|
|
|
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_i2c_driver(si4713_i2c_driver);
|