2 * tegra20_das.h - Definitions for Tegra20 DAS driver
4 * Author: Stephen Warren <swarren@nvidia.com>
5 * Copyright (C) 2010,2012 - NVIDIA, Inc.
7 * This program is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU General Public License
9 * version 2 as published by the Free Software Foundation.
11 * This program is distributed in the hope that it will be useful, but
12 * WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
23 #ifndef __TEGRA20_DAS_H__
24 #define __TEGRA20_DAS_H__
26 /* Register TEGRA20_DAS_DAP_CTRL_SEL */
27 #define TEGRA20_DAS_DAP_CTRL_SEL 0x00
28 #define TEGRA20_DAS_DAP_CTRL_SEL_COUNT 5
29 #define TEGRA20_DAS_DAP_CTRL_SEL_STRIDE 4
30 #define TEGRA20_DAS_DAP_CTRL_SEL_DAP_MS_SEL_P 31
31 #define TEGRA20_DAS_DAP_CTRL_SEL_DAP_MS_SEL_S 1
32 #define TEGRA20_DAS_DAP_CTRL_SEL_DAP_SDATA1_TX_RX_P 30
33 #define TEGRA20_DAS_DAP_CTRL_SEL_DAP_SDATA1_TX_RX_S 1
34 #define TEGRA20_DAS_DAP_CTRL_SEL_DAP_SDATA2_TX_RX_P 29
35 #define TEGRA20_DAS_DAP_CTRL_SEL_DAP_SDATA2_TX_RX_S 1
36 #define TEGRA20_DAS_DAP_CTRL_SEL_DAP_CTRL_SEL_P 0
37 #define TEGRA20_DAS_DAP_CTRL_SEL_DAP_CTRL_SEL_S 5
39 /* Values for field TEGRA20_DAS_DAP_CTRL_SEL_DAP_CTRL_SEL */
40 #define TEGRA20_DAS_DAP_SEL_DAC1 0
41 #define TEGRA20_DAS_DAP_SEL_DAC2 1
42 #define TEGRA20_DAS_DAP_SEL_DAC3 2
43 #define TEGRA20_DAS_DAP_SEL_DAP1 16
44 #define TEGRA20_DAS_DAP_SEL_DAP2 17
45 #define TEGRA20_DAS_DAP_SEL_DAP3 18
46 #define TEGRA20_DAS_DAP_SEL_DAP4 19
47 #define TEGRA20_DAS_DAP_SEL_DAP5 20
49 /* Register TEGRA20_DAS_DAC_INPUT_DATA_CLK_SEL */
50 #define TEGRA20_DAS_DAC_INPUT_DATA_CLK_SEL 0x40
51 #define TEGRA20_DAS_DAC_INPUT_DATA_CLK_SEL_COUNT 3
52 #define TEGRA20_DAS_DAC_INPUT_DATA_CLK_SEL_STRIDE 4
53 #define TEGRA20_DAS_DAC_INPUT_DATA_CLK_SEL_DAC_SDATA2_SEL_P 28
54 #define TEGRA20_DAS_DAC_INPUT_DATA_CLK_SEL_DAC_SDATA2_SEL_S 4
55 #define TEGRA20_DAS_DAC_INPUT_DATA_CLK_SEL_DAC_SDATA1_SEL_P 24
56 #define TEGRA20_DAS_DAC_INPUT_DATA_CLK_SEL_DAC_SDATA1_SEL_S 4
57 #define TEGRA20_DAS_DAC_INPUT_DATA_CLK_SEL_DAC_CLK_SEL_P 0
58 #define TEGRA20_DAS_DAC_INPUT_DATA_CLK_SEL_DAC_CLK_SEL_S 4
62 * TEGRA20_DAS_DAC_INPUT_DATA_CLK_SEL_DAC_SDATA2_SEL
63 * TEGRA20_DAS_DAC_INPUT_DATA_CLK_SEL_DAC_SDATA1_SEL
64 * TEGRA20_DAS_DAC_INPUT_DATA_CLK_SEL_DAC_CLK_SEL
66 #define TEGRA20_DAS_DAC_SEL_DAP1 0
67 #define TEGRA20_DAS_DAC_SEL_DAP2 1
68 #define TEGRA20_DAS_DAC_SEL_DAP3 2
69 #define TEGRA20_DAS_DAC_SEL_DAP4 3
70 #define TEGRA20_DAS_DAC_SEL_DAP5 4
73 * Names/IDs of the DACs/DAPs.
76 #define TEGRA20_DAS_DAP_ID_1 0
77 #define TEGRA20_DAS_DAP_ID_2 1
78 #define TEGRA20_DAS_DAP_ID_3 2
79 #define TEGRA20_DAS_DAP_ID_4 3
80 #define TEGRA20_DAS_DAP_ID_5 4
82 #define TEGRA20_DAS_DAC_ID_1 0
83 #define TEGRA20_DAS_DAC_ID_2 1
84 #define TEGRA20_DAS_DAC_ID_3 2
88 struct regmap *regmap;
93 * DAS: Digital audio switch (HW module controlled by this driver)
94 * DAP: Digital audio port (port/pins on Tegra device)
95 * DAC: Digital audio controller (e.g. I2S or AC97 controller elsewhere)
97 * The Tegra DAS is a mux/cross-bar which can connect each DAP to a specific
98 * DAC, or another DAP. When DAPs are connected, one must be the master and
99 * one the slave. Each DAC allows selection of a specific DAP for input, to
100 * cater for the case where N DAPs are connected to 1 DAC for broadcast
103 * This driver is dumb; no attempt is made to ensure that a valid routing
104 * configuration is programmed.
108 * Connect a DAP to to a DAC
109 * dap_id: DAP to connect: TEGRA20_DAS_DAP_ID_*
110 * dac_sel: DAC to connect to: TEGRA20_DAS_DAP_SEL_DAC*
112 extern int tegra20_das_connect_dap_to_dac(int dap_id, int dac_sel);
115 * Connect a DAP to to another DAP
116 * dap_id: DAP to connect: TEGRA20_DAS_DAP_ID_*
117 * other_dap_sel: DAP to connect to: TEGRA20_DAS_DAP_SEL_DAP*
118 * master: Is this DAP the master (1) or slave (0)
119 * sdata1rx: Is this DAP's SDATA1 pin RX (1) or TX (0)
120 * sdata2rx: Is this DAP's SDATA2 pin RX (1) or TX (0)
122 extern int tegra20_das_connect_dap_to_dap(int dap_id, int other_dap_sel,
123 int master, int sdata1rx,
127 * Connect a DAC's input to a DAP
128 * (DAC outputs are selected by the DAP)
129 * dac_id: DAC ID to connect: TEGRA20_DAS_DAC_ID_*
130 * dap_sel: DAP to receive input from: TEGRA20_DAS_DAC_SEL_DAP*
132 extern int tegra20_das_connect_dac_to_dap(int dac_id, int dap_sel);