| /* |
| * tegra_das.h - Definitions for Tegra DAS driver |
| * |
| * Author: Stephen Warren <swarren@nvidia.com> |
| * Copyright (C) 2010 - NVIDIA, Inc. |
| * |
| * This program is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU General Public License |
| * version 2 as published by the Free Software Foundation. |
| * |
| * This program 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 program; if not, write to the Free Software |
| * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA |
| * 02110-1301 USA |
| * |
| */ |
| |
| #ifndef __TEGRA_DAS_H__ |
| #define __TEGRA_DAS_H__ |
| |
| /* Register TEGRA_DAS_DAP_CTRL_SEL */ |
| #define TEGRA_DAS_DAP_CTRL_SEL 0x00 |
| #define TEGRA_DAS_DAP_CTRL_SEL_COUNT 5 |
| #define TEGRA_DAS_DAP_CTRL_SEL_STRIDE 4 |
| #define TEGRA_DAS_DAP_CTRL_SEL_DAP_MS_SEL_P 31 |
| #define TEGRA_DAS_DAP_CTRL_SEL_DAP_MS_SEL_S 1 |
| #define TEGRA_DAS_DAP_CTRL_SEL_DAP_SDATA1_TX_RX_P 30 |
| #define TEGRA_DAS_DAP_CTRL_SEL_DAP_SDATA1_TX_RX_S 1 |
| #define TEGRA_DAS_DAP_CTRL_SEL_DAP_SDATA2_TX_RX_P 29 |
| #define TEGRA_DAS_DAP_CTRL_SEL_DAP_SDATA2_TX_RX_S 1 |
| #define TEGRA_DAS_DAP_CTRL_SEL_DAP_CTRL_SEL_P 0 |
| #define TEGRA_DAS_DAP_CTRL_SEL_DAP_CTRL_SEL_S 5 |
| |
| /* Values for field TEGRA_DAS_DAP_CTRL_SEL_DAP_CTRL_SEL */ |
| #define TEGRA_DAS_DAP_SEL_DAC1 0 |
| #define TEGRA_DAS_DAP_SEL_DAC2 1 |
| #define TEGRA_DAS_DAP_SEL_DAC3 2 |
| #define TEGRA_DAS_DAP_SEL_DAP1 16 |
| #define TEGRA_DAS_DAP_SEL_DAP2 17 |
| #define TEGRA_DAS_DAP_SEL_DAP3 18 |
| #define TEGRA_DAS_DAP_SEL_DAP4 19 |
| #define TEGRA_DAS_DAP_SEL_DAP5 20 |
| |
| /* Register TEGRA_DAS_DAC_INPUT_DATA_CLK_SEL */ |
| #define TEGRA_DAS_DAC_INPUT_DATA_CLK_SEL 0x40 |
| #define TEGRA_DAS_DAC_INPUT_DATA_CLK_SEL_COUNT 3 |
| #define TEGRA_DAS_DAC_INPUT_DATA_CLK_SEL_STRIDE 4 |
| #define TEGRA_DAS_DAC_INPUT_DATA_CLK_SEL_DAC_SDATA2_SEL_P 28 |
| #define TEGRA_DAS_DAC_INPUT_DATA_CLK_SEL_DAC_SDATA2_SEL_S 4 |
| #define TEGRA_DAS_DAC_INPUT_DATA_CLK_SEL_DAC_SDATA1_SEL_P 24 |
| #define TEGRA_DAS_DAC_INPUT_DATA_CLK_SEL_DAC_SDATA1_SEL_S 4 |
| #define TEGRA_DAS_DAC_INPUT_DATA_CLK_SEL_DAC_CLK_SEL_P 0 |
| #define TEGRA_DAS_DAC_INPUT_DATA_CLK_SEL_DAC_CLK_SEL_S 4 |
| |
| /* |
| * Values for: |
| * TEGRA_DAS_DAC_INPUT_DATA_CLK_SEL_DAC_SDATA2_SEL |
| * TEGRA_DAS_DAC_INPUT_DATA_CLK_SEL_DAC_SDATA1_SEL |
| * TEGRA_DAS_DAC_INPUT_DATA_CLK_SEL_DAC_CLK_SEL |
| */ |
| #define TEGRA_DAS_DAC_SEL_DAP1 0 |
| #define TEGRA_DAS_DAC_SEL_DAP2 1 |
| #define TEGRA_DAS_DAC_SEL_DAP3 2 |
| #define TEGRA_DAS_DAC_SEL_DAP4 3 |
| #define TEGRA_DAS_DAC_SEL_DAP5 4 |
| |
| /* |
| * Names/IDs of the DACs/DAPs. |
| */ |
| |
| #define TEGRA_DAS_DAP_ID_1 0 |
| #define TEGRA_DAS_DAP_ID_2 1 |
| #define TEGRA_DAS_DAP_ID_3 2 |
| #define TEGRA_DAS_DAP_ID_4 3 |
| #define TEGRA_DAS_DAP_ID_5 4 |
| |
| #define TEGRA_DAS_DAC_ID_1 0 |
| #define TEGRA_DAS_DAC_ID_2 1 |
| #define TEGRA_DAS_DAC_ID_3 2 |
| |
| struct tegra_das { |
| struct device *dev; |
| void __iomem *regs; |
| struct dentry *debug; |
| }; |
| |
| /* |
| * Terminology: |
| * DAS: Digital audio switch (HW module controlled by this driver) |
| * DAP: Digital audio port (port/pins on Tegra device) |
| * DAC: Digital audio controller (e.g. I2S or AC97 controller elsewhere) |
| * |
| * The Tegra DAS is a mux/cross-bar which can connect each DAP to a specific |
| * DAC, or another DAP. When DAPs are connected, one must be the master and |
| * one the slave. Each DAC allows selection of a specific DAP for input, to |
| * cater for the case where N DAPs are connected to 1 DAC for broadcast |
| * output. |
| * |
| * This driver is dumb; no attempt is made to ensure that a valid routing |
| * configuration is programmed. |
| */ |
| |
| /* |
| * Connect a DAP to to a DAC |
| * dap_id: DAP to connect: TEGRA_DAS_DAP_ID_* |
| * dac_sel: DAC to connect to: TEGRA_DAS_DAP_SEL_DAC* |
| */ |
| extern int tegra_das_connect_dap_to_dac(int dap_id, int dac_sel); |
| |
| /* |
| * Connect a DAP to to another DAP |
| * dap_id: DAP to connect: TEGRA_DAS_DAP_ID_* |
| * other_dap_sel: DAP to connect to: TEGRA_DAS_DAP_SEL_DAP* |
| * master: Is this DAP the master (1) or slave (0) |
| * sdata1rx: Is this DAP's SDATA1 pin RX (1) or TX (0) |
| * sdata2rx: Is this DAP's SDATA2 pin RX (1) or TX (0) |
| */ |
| extern int tegra_das_connect_dap_to_dap(int dap_id, int other_dap_sel, |
| int master, int sdata1rx, |
| int sdata2rx); |
| |
| /* |
| * Connect a DAC's input to a DAP |
| * (DAC outputs are selected by the DAP) |
| * dac_id: DAC ID to connect: TEGRA_DAS_DAC_ID_* |
| * dap_sel: DAP to receive input from: TEGRA_DAS_DAC_SEL_DAP* |
| */ |
| extern int tegra_das_connect_dac_to_dap(int dac_id, int dap_sel); |
| |
| #endif |