LXR linux/sound/pci/oxygen/xonar

   1// SPDX-License-Identifier: GPL-2.0-only
   2/*
   3 * helper functions for HDMI models (Xonar HDAV1.3/HDAV1.3 Slim)
   4 *
   5 * Copyright (c) Clemens Ladisch <clemens@ladisch.de>
   6 */
   7
   8#include <linux/pci.h>
   9#include <linux/delay.h>
  10#include <sound/asoundef.h>
  11#include <sound/control.h>
  12#include <sound/core.h>
  13#include <sound/pcm.h>
  14#include <sound/pcm_params.h>
  15#include <sound/tlv.h>
  16#include "xonar.h"
  17
  18static void hdmi_write_command(struct oxygen *chip, u8 command,
  19                               unsigned int count, const u8 *params)
  20{
  21        unsigned int i;
  22        u8 checksum;
  23
  24        oxygen_write_uart(chip, 0xfb);
  25        oxygen_write_uart(chip, 0xef);
  26        oxygen_write_uart(chip, command);
  27        oxygen_write_uart(chip, count);
  28        for (i = 0; i < count; ++i)
  29                oxygen_write_uart(chip, params[i]);
  30        checksum = 0xfb + 0xef + command + count;
  31        for (i = 0; i < count; ++i)
  32                checksum += params[i];
  33        oxygen_write_uart(chip, checksum);
  34}
  35
  36static void xonar_hdmi_init_commands(struct oxygen *chip,
  37                                     struct xonar_hdmi *hdmi)
  38{
  39        u8 param;
  40
  41        oxygen_reset_uart(chip);
  42        param = 0;
  43        hdmi_write_command(chip, 0x61, 1, &param);
  44        param = 1;
  45        hdmi_write_command(chip, 0x74, 1, &param);
  46        hdmi_write_command(chip, 0x54, 5, hdmi->params);
  47}
  48
  49void xonar_hdmi_init(struct oxygen *chip, struct xonar_hdmi *hdmi)
  50{
  51        hdmi->params[1] = IEC958_AES3_CON_FS_48000;
  52        hdmi->params[4] = 1;
  53        xonar_hdmi_init_commands(chip, hdmi);
  54}
  55
  56void xonar_hdmi_cleanup(struct oxygen *chip)
  57{
  58        u8 param = 0;
  59
  60        hdmi_write_command(chip, 0x74, 1, &param);
  61}
  62
  63void xonar_hdmi_resume(struct oxygen *chip, struct xonar_hdmi *hdmi)
  64{
  65        xonar_hdmi_init_commands(chip, hdmi);
  66}
  67
  68void xonar_hdmi_pcm_hardware_filter(unsigned int channel,
  69                                    struct snd_pcm_hardware *hardware)
  70{
  71        if (channel == PCM_MULTICH) {
  72                hardware->rates = SNDRV_PCM_RATE_44100 |
  73                                  SNDRV_PCM_RATE_48000 |
  74                                  SNDRV_PCM_RATE_96000 |
  75                                  SNDRV_PCM_RATE_192000;
  76                hardware->rate_min = 44100;
  77        }
  78}
  79
  80void xonar_set_hdmi_params(struct oxygen *chip, struct xonar_hdmi *hdmi,
  81                           struct snd_pcm_hw_params *params)
  82{
  83        hdmi->params[0] = 0; /* 1 = non-audio */
  84        switch (params_rate(params)) {
  85        case 44100:
  86                hdmi->params[1] = IEC958_AES3_CON_FS_44100;
  87                break;
  88        case 48000:
  89                hdmi->params[1] = IEC958_AES3_CON_FS_48000;
  90                break;
  91        default: /* 96000 */
  92                hdmi->params[1] = IEC958_AES3_CON_FS_96000;
  93                break;
  94        case 192000:
  95                hdmi->params[1] = IEC958_AES3_CON_FS_192000;
  96                break;
  97        }
  98        hdmi->params[2] = params_channels(params) / 2 - 1;
  99        if (params_format(params) == SNDRV_PCM_FORMAT_S16_LE)
 100                hdmi->params[3] = 0;
 101        else
 102                hdmi->params[3] = 0xc0;
 103        hdmi->params[4] = 1; /* ? */
 104        hdmi_write_command(chip, 0x54, 5, hdmi->params);
 105}
 106
 107void xonar_hdmi_uart_input(struct oxygen *chip)
 108{
 109        if (chip->uart_input_count >= 2 &&
 110            chip->uart_input[chip->uart_input_count - 2] == 'O' &&
 111            chip->uart_input[chip->uart_input_count - 1] == 'K') {
 112                dev_dbg(chip->card->dev, "message from HDMI chip received:\n");
 113                print_hex_dump_bytes("", DUMP_PREFIX_OFFSET,
 114                                     chip->uart_input, chip->uart_input_count);
 115                chip->uart_input_count = 0;
 116        }
 117}
 118