projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| dd7b254d GP |
1 | /*************************************************************************** |
| 2 | ||
| 3 | Copyright Echo Digital Audio Corporation (c) 1998 - 2004 | |
| 4 | All rights reserved | |
| 5 | www.echoaudio.com | |
| 6 | ||
| 7 | This file is part of Echo Digital Audio's generic driver library. | |
| 8 | ||
| 9 | Echo Digital Audio's generic driver library is free software; | |
| 10 | you can redistribute it and/or modify it under the terms of | |
| 11 | the GNU General Public License as published by the Free Software | |
| 12 | Foundation. | |
| 13 | ||
| 14 | This program is distributed in the hope that it will be useful, | |
| 15 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 17 | GNU General Public License for more details. | |
| 18 | ||
| 19 | You should have received a copy of the GNU General Public License | |
| 20 | along with this program; if not, write to the Free Software | |
| 21 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, | |
| 22 | MA 02111-1307, USA. | |
| 23 | ||
| 24 | ************************************************************************* | |
| 25 | ||
| 26 | Translation from C++ and adaptation for use in ALSA-Driver | |
| 27 | were made by Giuliano Pochini <pochini@shiny.it> | |
| 28 | ||
| 29 | ****************************************************************************/ | |
| 30 | ||
| 31 | ||
| 32 | static int init_hw(struct echoaudio *chip, u16 device_id, u16 subdevice_id) | |
| 33 | { | |
| 34 | int err; | |
| 35 | ||
| 36 | DE_INIT(("init_hw() - Darla20\n")); | |
| da3cec35 TI |
37 | if (snd_BUG_ON((subdevice_id & 0xfff0) != DARLA20)) |
| 38 | return -ENODEV; | |
| dd7b254d GP |
39 | |
| 40 | if ((err = init_dsp_comm_page(chip))) { | |
| 41 | DE_INIT(("init_hw - could not initialize DSP comm page\n")); | |
| 42 | return err; | |
| 43 | } | |
| 44 | ||
| 45 | chip->device_id = device_id; | |
| 46 | chip->subdevice_id = subdevice_id; | |
| 47 | chip->bad_board = TRUE; | |
| 19b50063 | 48 | chip->dsp_code_to_load = FW_DARLA20_DSP; |
| dd7b254d GP |
49 | chip->spdif_status = GD_SPDIF_STATUS_UNDEF; |
| 50 | chip->clock_state = GD_CLOCK_UNDEF; | |
| 51 | /* Since this card has no ASIC, mark it as loaded so everything | |
| 52 | works OK */ | |
| 53 | chip->asic_loaded = TRUE; | |
| 54 | chip->input_clock_types = ECHO_CLOCK_BIT_INTERNAL; | |
| 55 | ||
| 56 | if ((err = load_firmware(chip)) < 0) | |
| 57 | return err; | |
| 58 | chip->bad_board = FALSE; | |
| 59 | ||
| dd7b254d GP |
60 | DE_INIT(("init_hw done\n")); |
| 61 | return err; | |
| 62 | } | |
| 63 | ||
| 64 | ||
| 65 | ||
| ad3499f4 GP |
66 | static int set_mixer_defaults(struct echoaudio *chip) |
| 67 | { | |
| 68 | return init_line_levels(chip); | |
| 69 | } | |
| 70 | ||
| 71 | ||
| 72 | ||
| dd7b254d GP |
73 | /* The Darla20 has no external clock sources */ |
| 74 | static u32 detect_input_clocks(const struct echoaudio *chip) | |
| 75 | { | |
| 76 | return ECHO_CLOCK_BIT_INTERNAL; | |
| 77 | } | |
| 78 | ||
| 79 | ||
| 80 | ||
| 81 | /* The Darla20 has no ASIC. Just do nothing */ | |
| 82 | static int load_asic(struct echoaudio *chip) | |
| 83 | { | |
| 84 | return 0; | |
| 85 | } | |
| 86 | ||
| 87 | ||
| 88 | ||
| 89 | static int set_sample_rate(struct echoaudio *chip, u32 rate) | |
| 90 | { | |
| 91 | u8 clock_state, spdif_status; | |
| 92 | ||
| 93 | if (wait_handshake(chip)) | |
| 94 | return -EIO; | |
| 95 | ||
| 96 | switch (rate) { | |
| 97 | case 44100: | |
| 98 | clock_state = GD_CLOCK_44; | |
| 99 | spdif_status = GD_SPDIF_STATUS_44; | |
| 100 | break; | |
| 101 | case 48000: | |
| 102 | clock_state = GD_CLOCK_48; | |
| 103 | spdif_status = GD_SPDIF_STATUS_48; | |
| 104 | break; | |
| 105 | default: | |
| 106 | clock_state = GD_CLOCK_NOCHANGE; | |
| 107 | spdif_status = GD_SPDIF_STATUS_NOCHANGE; | |
| 108 | break; | |
| 109 | } | |
| 110 | ||
| 111 | if (chip->clock_state == clock_state) | |
| 112 | clock_state = GD_CLOCK_NOCHANGE; | |
| 113 | if (spdif_status == chip->spdif_status) | |
| 114 | spdif_status = GD_SPDIF_STATUS_NOCHANGE; | |
| 115 | ||
| 116 | chip->comm_page->sample_rate = cpu_to_le32(rate); | |
| 117 | chip->comm_page->gd_clock_state = clock_state; | |
| 118 | chip->comm_page->gd_spdif_status = spdif_status; | |
| 119 | chip->comm_page->gd_resampler_state = 3; /* magic number - should always be 3 */ | |
| 120 | ||
| 121 | /* Save the new audio state if it changed */ | |
| 122 | if (clock_state != GD_CLOCK_NOCHANGE) | |
| 123 | chip->clock_state = clock_state; | |
| 124 | if (spdif_status != GD_SPDIF_STATUS_NOCHANGE) | |
| 125 | chip->spdif_status = spdif_status; | |
| 126 | chip->sample_rate = rate; | |
| 127 | ||
| 128 | clear_handshake(chip); | |
| 129 | return send_vector(chip, DSP_VC_SET_GD_AUDIO_STATE); | |
| 130 | } |