129 lines
3.4 KiB
C
129 lines
3.4 KiB
C
/*
|
|
* helper functions for HDMI models (Xonar HDAV1.3/HDAV1.3 Slim)
|
|
*
|
|
* Copyright (c) Clemens Ladisch <clemens@ladisch.de>
|
|
*
|
|
*
|
|
* This driver is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License, version 2.
|
|
*
|
|
* This driver is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this driver; if not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#include <linux/pci.h>
|
|
#include <linux/delay.h>
|
|
#include <sound/asoundef.h>
|
|
#include <sound/control.h>
|
|
#include <sound/core.h>
|
|
#include <sound/pcm.h>
|
|
#include <sound/pcm_params.h>
|
|
#include <sound/tlv.h>
|
|
#include "xonar.h"
|
|
|
|
static void hdmi_write_command(struct oxygen *chip, u8 command,
|
|
unsigned int count, const u8 *params)
|
|
{
|
|
unsigned int i;
|
|
u8 checksum;
|
|
|
|
oxygen_write_uart(chip, 0xfb);
|
|
oxygen_write_uart(chip, 0xef);
|
|
oxygen_write_uart(chip, command);
|
|
oxygen_write_uart(chip, count);
|
|
for (i = 0; i < count; ++i)
|
|
oxygen_write_uart(chip, params[i]);
|
|
checksum = 0xfb + 0xef + command + count;
|
|
for (i = 0; i < count; ++i)
|
|
checksum += params[i];
|
|
oxygen_write_uart(chip, checksum);
|
|
}
|
|
|
|
static void xonar_hdmi_init_commands(struct oxygen *chip,
|
|
struct xonar_hdmi *hdmi)
|
|
{
|
|
u8 param;
|
|
|
|
oxygen_reset_uart(chip);
|
|
param = 0;
|
|
hdmi_write_command(chip, 0x61, 1, ¶m);
|
|
param = 1;
|
|
hdmi_write_command(chip, 0x74, 1, ¶m);
|
|
hdmi_write_command(chip, 0x54, 5, hdmi->params);
|
|
}
|
|
|
|
void xonar_hdmi_init(struct oxygen *chip, struct xonar_hdmi *hdmi)
|
|
{
|
|
hdmi->params[1] = IEC958_AES3_CON_FS_48000;
|
|
hdmi->params[4] = 1;
|
|
xonar_hdmi_init_commands(chip, hdmi);
|
|
}
|
|
|
|
void xonar_hdmi_cleanup(struct oxygen *chip)
|
|
{
|
|
u8 param = 0;
|
|
|
|
hdmi_write_command(chip, 0x74, 1, ¶m);
|
|
}
|
|
|
|
void xonar_hdmi_resume(struct oxygen *chip, struct xonar_hdmi *hdmi)
|
|
{
|
|
xonar_hdmi_init_commands(chip, hdmi);
|
|
}
|
|
|
|
void xonar_hdmi_pcm_hardware_filter(unsigned int channel,
|
|
struct snd_pcm_hardware *hardware)
|
|
{
|
|
if (channel == PCM_MULTICH) {
|
|
hardware->rates = SNDRV_PCM_RATE_44100 |
|
|
SNDRV_PCM_RATE_48000 |
|
|
SNDRV_PCM_RATE_96000 |
|
|
SNDRV_PCM_RATE_192000;
|
|
hardware->rate_min = 44100;
|
|
}
|
|
}
|
|
|
|
void xonar_set_hdmi_params(struct oxygen *chip, struct xonar_hdmi *hdmi,
|
|
struct snd_pcm_hw_params *params)
|
|
{
|
|
hdmi->params[0] = 0; /* 1 = non-audio */
|
|
switch (params_rate(params)) {
|
|
case 44100:
|
|
hdmi->params[1] = IEC958_AES3_CON_FS_44100;
|
|
break;
|
|
case 48000:
|
|
hdmi->params[1] = IEC958_AES3_CON_FS_48000;
|
|
break;
|
|
default: /* 96000 */
|
|
hdmi->params[1] = IEC958_AES3_CON_FS_96000;
|
|
break;
|
|
case 192000:
|
|
hdmi->params[1] = IEC958_AES3_CON_FS_192000;
|
|
break;
|
|
}
|
|
hdmi->params[2] = params_channels(params) / 2 - 1;
|
|
if (params_format(params) == SNDRV_PCM_FORMAT_S16_LE)
|
|
hdmi->params[3] = 0;
|
|
else
|
|
hdmi->params[3] = 0xc0;
|
|
hdmi->params[4] = 1; /* ? */
|
|
hdmi_write_command(chip, 0x54, 5, hdmi->params);
|
|
}
|
|
|
|
void xonar_hdmi_uart_input(struct oxygen *chip)
|
|
{
|
|
if (chip->uart_input_count >= 2 &&
|
|
chip->uart_input[chip->uart_input_count - 2] == 'O' &&
|
|
chip->uart_input[chip->uart_input_count - 1] == 'K') {
|
|
dev_dbg(chip->card->dev, "message from HDMI chip received:\n");
|
|
print_hex_dump_bytes("", DUMP_PREFIX_OFFSET,
|
|
chip->uart_input, chip->uart_input_count);
|
|
chip->uart_input_count = 0;
|
|
}
|
|
}
|