129 lines
3.4 KiB
C
129 lines
3.4 KiB
C
/*
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* helper functions for HDMI models (Xonar HDAV1.3/HDAV1.3 Slim)
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*
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* Copyright (c) Clemens Ladisch <clemens@ladisch.de>
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*
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*
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* This driver is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License, version 2.
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*
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* This driver 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 driver; if not, see <http://www.gnu.org/licenses/>.
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*/
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#include <linux/pci.h>
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#include <linux/delay.h>
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#include <sound/asoundef.h>
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#include <sound/control.h>
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#include <sound/core.h>
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#include <sound/pcm.h>
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#include <sound/pcm_params.h>
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#include <sound/tlv.h>
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#include "xonar.h"
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static void hdmi_write_command(struct oxygen *chip, u8 command,
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unsigned int count, const u8 *params)
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{
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unsigned int i;
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u8 checksum;
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oxygen_write_uart(chip, 0xfb);
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oxygen_write_uart(chip, 0xef);
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oxygen_write_uart(chip, command);
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oxygen_write_uart(chip, count);
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for (i = 0; i < count; ++i)
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oxygen_write_uart(chip, params[i]);
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checksum = 0xfb + 0xef + command + count;
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for (i = 0; i < count; ++i)
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checksum += params[i];
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oxygen_write_uart(chip, checksum);
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}
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static void xonar_hdmi_init_commands(struct oxygen *chip,
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struct xonar_hdmi *hdmi)
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{
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u8 param;
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oxygen_reset_uart(chip);
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param = 0;
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hdmi_write_command(chip, 0x61, 1, ¶m);
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param = 1;
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hdmi_write_command(chip, 0x74, 1, ¶m);
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hdmi_write_command(chip, 0x54, 5, hdmi->params);
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}
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void xonar_hdmi_init(struct oxygen *chip, struct xonar_hdmi *hdmi)
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{
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hdmi->params[1] = IEC958_AES3_CON_FS_48000;
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hdmi->params[4] = 1;
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xonar_hdmi_init_commands(chip, hdmi);
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}
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void xonar_hdmi_cleanup(struct oxygen *chip)
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{
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u8 param = 0;
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hdmi_write_command(chip, 0x74, 1, ¶m);
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}
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void xonar_hdmi_resume(struct oxygen *chip, struct xonar_hdmi *hdmi)
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{
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xonar_hdmi_init_commands(chip, hdmi);
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}
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void xonar_hdmi_pcm_hardware_filter(unsigned int channel,
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struct snd_pcm_hardware *hardware)
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{
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if (channel == PCM_MULTICH) {
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hardware->rates = SNDRV_PCM_RATE_44100 |
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SNDRV_PCM_RATE_48000 |
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SNDRV_PCM_RATE_96000 |
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SNDRV_PCM_RATE_192000;
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hardware->rate_min = 44100;
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}
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}
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void xonar_set_hdmi_params(struct oxygen *chip, struct xonar_hdmi *hdmi,
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struct snd_pcm_hw_params *params)
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{
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hdmi->params[0] = 0; /* 1 = non-audio */
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switch (params_rate(params)) {
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case 44100:
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hdmi->params[1] = IEC958_AES3_CON_FS_44100;
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break;
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case 48000:
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hdmi->params[1] = IEC958_AES3_CON_FS_48000;
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break;
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default: /* 96000 */
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hdmi->params[1] = IEC958_AES3_CON_FS_96000;
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break;
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case 192000:
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hdmi->params[1] = IEC958_AES3_CON_FS_192000;
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break;
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}
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hdmi->params[2] = params_channels(params) / 2 - 1;
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if (params_format(params) == SNDRV_PCM_FORMAT_S16_LE)
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hdmi->params[3] = 0;
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else
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hdmi->params[3] = 0xc0;
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hdmi->params[4] = 1; /* ? */
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hdmi_write_command(chip, 0x54, 5, hdmi->params);
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}
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void xonar_hdmi_uart_input(struct oxygen *chip)
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{
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if (chip->uart_input_count >= 2 &&
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chip->uart_input[chip->uart_input_count - 2] == 'O' &&
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chip->uart_input[chip->uart_input_count - 1] == 'K') {
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printk(KERN_DEBUG "message from HDMI chip received:\n");
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print_hex_dump_bytes("", DUMP_PREFIX_OFFSET,
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chip->uart_input, chip->uart_input_count);
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chip->uart_input_count = 0;
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}
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}
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