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1667 lines
42 KiB
1667 lines
42 KiB
// SPDX-License-Identifier: GPL-2.0-or-later |
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/* |
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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 <[email protected]> |
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*/ |
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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 <[email protected]>"); |
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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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|
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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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|
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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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/* |
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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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|
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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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|
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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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|
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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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|
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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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|
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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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|
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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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|
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return err; |
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} |
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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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|
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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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|
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if (resp[1] == SI4713_PRODUCT_NUMBER) { |
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v4l2_info(&sdev->sd, "chip found @ 0x%02x (%s)\n", |
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client->addr << 1, client->adapter->name); |
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} else { |
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v4l2_err(&sdev->sd, "Invalid product number 0x%X\n", resp[1]); |
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rval = -EINVAL; |
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} |
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return rval; |
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} |
|
|
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/* |
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* si4713_wait_stc - Waits STC interrupt and clears status bits. Useful |
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* for TX_TUNE_POWER, TX_TUNE_FREQ and TX_TUNE_MEAS |
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* @sdev: si4713_device structure for the device we are communicating |
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* @usecs: timeout to wait for STC interrupt signal |
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*/ |
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static int si4713_wait_stc(struct si4713_device *sdev, const int usecs) |
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{ |
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struct i2c_client *client = v4l2_get_subdevdata(&sdev->sd); |
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u8 resp[SI4713_GET_STATUS_NRESP]; |
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unsigned long start_jiffies = jiffies; |
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int err; |
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|
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if (client->irq && |
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!wait_for_completion_timeout(&sdev->work, 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", __func__); |
|
|
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for (;;) { |
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/* Clear status bits */ |
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err = si4713_send_command(sdev, SI4713_CMD_GET_INT_STATUS, |
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NULL, 0, |
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resp, ARRAY_SIZE(resp), |
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DEFAULT_TIMEOUT); |
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/* The USB device returns errors when it waits for the |
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* STC bit to be set. Hence polling */ |
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if (err >= 0) { |
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v4l2_dbg(1, debug, &sdev->sd, |
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"%s: status bits: 0x%02x\n", __func__, resp[0]); |
|
|
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if (resp[0] & SI4713_STC_INT) |
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return 0; |
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} |
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if (jiffies_to_usecs(jiffies - start_jiffies) > usecs) |
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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. */ |
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usleep_range(3000, 4000); |
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} |
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} |
|
|
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/* |
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* 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. |
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* @sdev: si4713_device structure for the device we are communicating |
|
* @frequency: desired frequency (76 - 108 MHz, unit 10 KHz, step 50 kHz) |
|
*/ |
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static int si4713_tx_tune_freq(struct si4713_device *sdev, u16 frequency) |
|
{ |
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int err; |
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u8 val[SI4713_TXFREQ_NRESP]; |
|
/* |
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* .First byte = 0 |
|
* .Second byte = frequency's MSB |
|
* .Third byte = frequency's LSB |
|
*/ |
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const u8 args[SI4713_TXFREQ_NARGS] = { |
|
0x00, |
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msb(frequency), |
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lsb(frequency), |
|
}; |
|
|
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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; |
|
fallthrough; |
|
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; |
|
|
|
strscpy(vm->name, "FM Modulator", sizeof(vm->name)); |
|
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) |
|
{ |
|
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); |
|
|
|
#if IS_ENABLED(CONFIG_OF) |
|
static const struct of_device_id si4713_of_match[] = { |
|
{ .compatible = "silabs,si4713" }, |
|
{ }, |
|
}; |
|
MODULE_DEVICE_TABLE(of, si4713_of_match); |
|
#endif |
|
|
|
static struct i2c_driver si4713_i2c_driver = { |
|
.driver = { |
|
.name = "si4713", |
|
.of_match_table = of_match_ptr(si4713_of_match), |
|
}, |
|
.probe_new = si4713_probe, |
|
.remove = si4713_remove, |
|
.id_table = si4713_id, |
|
}; |
|
|
|
module_i2c_driver(si4713_i2c_driver);
|
|
|