diff options
Diffstat (limited to 'sound/pci/oxygen/xonar_hdmi.c')
| -rw-r--r-- | sound/pci/oxygen/xonar_hdmi.c | 128 |
1 files changed, 128 insertions, 0 deletions
diff --git a/sound/pci/oxygen/xonar_hdmi.c b/sound/pci/oxygen/xonar_hdmi.c new file mode 100644 index 0000000..b12db1f --- /dev/null +++ b/sound/pci/oxygen/xonar_hdmi.c @@ -0,0 +1,128 @@ +/* + * helper functions for HDMI models (Xonar HDAV1.3) + * + * 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') { + printk(KERN_DEBUG "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; + } +} |