d4a2eca781
When devices are instantiated from device-tree, pdev->id is set to -1.
Rework the driver so it doesn't depend on the ID.
Tegra I2S instantiated from board files are configured with pdev
name "tegra-i2s" and ID 0 or 1. The driver core then names the
device "tegra-i2s.0" or "tegra-i2s.1". This is not changing.
When a device is instantiated from device-tree, it will have
pdev->name="" and pdev->id=-1. For this reason, the pdev->id value is
not something we can rely on.
This patch doesn't actually change any names though:
When a device is instantiated from device-tree, the overall device name
will be "${unit_address}.${node_name}". This causes issues such as
clk_get() failures due to lack of a device-name match. To solve that,
AUXDATA was invented, to force a specific device name, thus allowing
dev_name() to return the same as the non-device-tree case. Tegra
currently uses AUXDATA for the I2S controllers. Eventually, AUXDATA will
go away, most likely replaced by phandle-based references within the
device tree.
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
167 lines
7.2 KiB
C
167 lines
7.2 KiB
C
/*
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* tegra_i2s.h - Definitions for Tegra I2S driver
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*
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* Author: Stephen Warren <swarren@nvidia.com>
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* Copyright (C) 2010 - NVIDIA, Inc.
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*
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* Based on code copyright/by:
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*
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* Copyright (c) 2009-2010, NVIDIA Corporation.
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* Scott Peterson <speterson@nvidia.com>
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*
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* Copyright (C) 2010 Google, Inc.
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* Iliyan Malchev <malchev@google.com>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* version 2 as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* 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 program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
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* 02110-1301 USA
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*
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*/
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#ifndef __TEGRA_I2S_H__
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#define __TEGRA_I2S_H__
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#include "tegra_pcm.h"
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/* Register offsets from TEGRA_I2S1_BASE and TEGRA_I2S2_BASE */
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#define TEGRA_I2S_CTRL 0x00
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#define TEGRA_I2S_STATUS 0x04
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#define TEGRA_I2S_TIMING 0x08
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#define TEGRA_I2S_FIFO_SCR 0x0c
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#define TEGRA_I2S_PCM_CTRL 0x10
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#define TEGRA_I2S_NW_CTRL 0x14
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#define TEGRA_I2S_TDM_CTRL 0x20
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#define TEGRA_I2S_TDM_TX_RX_CTRL 0x24
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#define TEGRA_I2S_FIFO1 0x40
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#define TEGRA_I2S_FIFO2 0x80
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/* Fields in TEGRA_I2S_CTRL */
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#define TEGRA_I2S_CTRL_FIFO2_TX_ENABLE (1 << 30)
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#define TEGRA_I2S_CTRL_FIFO1_ENABLE (1 << 29)
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#define TEGRA_I2S_CTRL_FIFO2_ENABLE (1 << 28)
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#define TEGRA_I2S_CTRL_FIFO1_RX_ENABLE (1 << 27)
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#define TEGRA_I2S_CTRL_FIFO_LPBK_ENABLE (1 << 26)
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#define TEGRA_I2S_CTRL_MASTER_ENABLE (1 << 25)
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#define TEGRA_I2S_LRCK_LEFT_LOW 0
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#define TEGRA_I2S_LRCK_RIGHT_LOW 1
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#define TEGRA_I2S_CTRL_LRCK_SHIFT 24
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#define TEGRA_I2S_CTRL_LRCK_MASK (1 << TEGRA_I2S_CTRL_LRCK_SHIFT)
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#define TEGRA_I2S_CTRL_LRCK_L_LOW (TEGRA_I2S_LRCK_LEFT_LOW << TEGRA_I2S_CTRL_LRCK_SHIFT)
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#define TEGRA_I2S_CTRL_LRCK_R_LOW (TEGRA_I2S_LRCK_RIGHT_LOW << TEGRA_I2S_CTRL_LRCK_SHIFT)
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#define TEGRA_I2S_BIT_FORMAT_I2S 0
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#define TEGRA_I2S_BIT_FORMAT_RJM 1
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#define TEGRA_I2S_BIT_FORMAT_LJM 2
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#define TEGRA_I2S_BIT_FORMAT_DSP 3
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#define TEGRA_I2S_CTRL_BIT_FORMAT_SHIFT 10
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#define TEGRA_I2S_CTRL_BIT_FORMAT_MASK (3 << TEGRA_I2S_CTRL_BIT_FORMAT_SHIFT)
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#define TEGRA_I2S_CTRL_BIT_FORMAT_I2S (TEGRA_I2S_BIT_FORMAT_I2S << TEGRA_I2S_CTRL_BIT_FORMAT_SHIFT)
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#define TEGRA_I2S_CTRL_BIT_FORMAT_RJM (TEGRA_I2S_BIT_FORMAT_RJM << TEGRA_I2S_CTRL_BIT_FORMAT_SHIFT)
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#define TEGRA_I2S_CTRL_BIT_FORMAT_LJM (TEGRA_I2S_BIT_FORMAT_LJM << TEGRA_I2S_CTRL_BIT_FORMAT_SHIFT)
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#define TEGRA_I2S_CTRL_BIT_FORMAT_DSP (TEGRA_I2S_BIT_FORMAT_DSP << TEGRA_I2S_CTRL_BIT_FORMAT_SHIFT)
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#define TEGRA_I2S_BIT_SIZE_16 0
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#define TEGRA_I2S_BIT_SIZE_20 1
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#define TEGRA_I2S_BIT_SIZE_24 2
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#define TEGRA_I2S_BIT_SIZE_32 3
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#define TEGRA_I2S_CTRL_BIT_SIZE_SHIFT 8
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#define TEGRA_I2S_CTRL_BIT_SIZE_MASK (3 << TEGRA_I2S_CTRL_BIT_SIZE_SHIFT)
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#define TEGRA_I2S_CTRL_BIT_SIZE_16 (TEGRA_I2S_BIT_SIZE_16 << TEGRA_I2S_CTRL_BIT_SIZE_SHIFT)
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#define TEGRA_I2S_CTRL_BIT_SIZE_20 (TEGRA_I2S_BIT_SIZE_20 << TEGRA_I2S_CTRL_BIT_SIZE_SHIFT)
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#define TEGRA_I2S_CTRL_BIT_SIZE_24 (TEGRA_I2S_BIT_SIZE_24 << TEGRA_I2S_CTRL_BIT_SIZE_SHIFT)
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#define TEGRA_I2S_CTRL_BIT_SIZE_32 (TEGRA_I2S_BIT_SIZE_32 << TEGRA_I2S_CTRL_BIT_SIZE_SHIFT)
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#define TEGRA_I2S_FIFO_16_LSB 0
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#define TEGRA_I2S_FIFO_20_LSB 1
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#define TEGRA_I2S_FIFO_24_LSB 2
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#define TEGRA_I2S_FIFO_32 3
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#define TEGRA_I2S_FIFO_PACKED 7
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#define TEGRA_I2S_CTRL_FIFO_FORMAT_SHIFT 4
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#define TEGRA_I2S_CTRL_FIFO_FORMAT_MASK (7 << TEGRA_I2S_CTRL_FIFO_FORMAT_SHIFT)
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#define TEGRA_I2S_CTRL_FIFO_FORMAT_16_LSB (TEGRA_I2S_FIFO_16_LSB << TEGRA_I2S_CTRL_FIFO_FORMAT_SHIFT)
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#define TEGRA_I2S_CTRL_FIFO_FORMAT_20_LSB (TEGRA_I2S_FIFO_20_LSB << TEGRA_I2S_CTRL_FIFO_FORMAT_SHIFT)
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#define TEGRA_I2S_CTRL_FIFO_FORMAT_24_LSB (TEGRA_I2S_FIFO_24_LSB << TEGRA_I2S_CTRL_FIFO_FORMAT_SHIFT)
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#define TEGRA_I2S_CTRL_FIFO_FORMAT_32 (TEGRA_I2S_FIFO_32 << TEGRA_I2S_CTRL_FIFO_FORMAT_SHIFT)
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#define TEGRA_I2S_CTRL_FIFO_FORMAT_PACKED (TEGRA_I2S_FIFO_PACKED << TEGRA_I2S_CTRL_FIFO_FORMAT_SHIFT)
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#define TEGRA_I2S_CTRL_IE_FIFO1_ERR (1 << 3)
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#define TEGRA_I2S_CTRL_IE_FIFO2_ERR (1 << 2)
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#define TEGRA_I2S_CTRL_QE_FIFO1 (1 << 1)
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#define TEGRA_I2S_CTRL_QE_FIFO2 (1 << 0)
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/* Fields in TEGRA_I2S_STATUS */
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#define TEGRA_I2S_STATUS_FIFO1_RDY (1 << 31)
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#define TEGRA_I2S_STATUS_FIFO2_RDY (1 << 30)
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#define TEGRA_I2S_STATUS_FIFO1_BSY (1 << 29)
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#define TEGRA_I2S_STATUS_FIFO2_BSY (1 << 28)
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#define TEGRA_I2S_STATUS_FIFO1_ERR (1 << 3)
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#define TEGRA_I2S_STATUS_FIFO2_ERR (1 << 2)
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#define TEGRA_I2S_STATUS_QS_FIFO1 (1 << 1)
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#define TEGRA_I2S_STATUS_QS_FIFO2 (1 << 0)
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/* Fields in TEGRA_I2S_TIMING */
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#define TEGRA_I2S_TIMING_NON_SYM_ENABLE (1 << 12)
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#define TEGRA_I2S_TIMING_CHANNEL_BIT_COUNT_SHIFT 0
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#define TEGRA_I2S_TIMING_CHANNEL_BIT_COUNT_MASK_US 0x7fff
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#define TEGRA_I2S_TIMING_CHANNEL_BIT_COUNT_MASK (TEGRA_I2S_TIMING_CHANNEL_BIT_COUNT_MASK_US << TEGRA_I2S_TIMING_CHANNEL_BIT_COUNT_SHIFT)
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/* Fields in TEGRA_I2S_FIFO_SCR */
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#define TEGRA_I2S_FIFO_SCR_FIFO2_FULL_EMPTY_COUNT_SHIFT 24
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#define TEGRA_I2S_FIFO_SCR_FIFO1_FULL_EMPTY_COUNT_SHIFT 16
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#define TEGRA_I2S_FIFO_SCR_FIFO_FULL_EMPTY_COUNT_MASK 0x3f
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#define TEGRA_I2S_FIFO_SCR_FIFO2_CLR (1 << 12)
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#define TEGRA_I2S_FIFO_SCR_FIFO1_CLR (1 << 8)
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#define TEGRA_I2S_FIFO_ATN_LVL_ONE_SLOT 0
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#define TEGRA_I2S_FIFO_ATN_LVL_FOUR_SLOTS 1
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#define TEGRA_I2S_FIFO_ATN_LVL_EIGHT_SLOTS 2
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#define TEGRA_I2S_FIFO_ATN_LVL_TWELVE_SLOTS 3
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#define TEGRA_I2S_FIFO_SCR_FIFO2_ATN_LVL_SHIFT 4
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#define TEGRA_I2S_FIFO_SCR_FIFO2_ATN_LVL_MASK (3 << TEGRA_I2S_FIFO_SCR_FIFO2_ATN_LVL_SHIFT)
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#define TEGRA_I2S_FIFO_SCR_FIFO2_ATN_LVL_ONE_SLOT (TEGRA_I2S_FIFO_ATN_LVL_ONE_SLOT << TEGRA_I2S_FIFO_SCR_FIFO2_ATN_LVL_SHIFT)
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#define TEGRA_I2S_FIFO_SCR_FIFO2_ATN_LVL_FOUR_SLOTS (TEGRA_I2S_FIFO_ATN_LVL_FOUR_SLOTS << TEGRA_I2S_FIFO_SCR_FIFO2_ATN_LVL_SHIFT)
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#define TEGRA_I2S_FIFO_SCR_FIFO2_ATN_LVL_EIGHT_SLOTS (TEGRA_I2S_FIFO_ATN_LVL_EIGHT_SLOTS << TEGRA_I2S_FIFO_SCR_FIFO2_ATN_LVL_SHIFT)
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#define TEGRA_I2S_FIFO_SCR_FIFO2_ATN_LVL_TWELVE_SLOTS (TEGRA_I2S_FIFO_ATN_LVL_TWELVE_SLOTS << TEGRA_I2S_FIFO_SCR_FIFO2_ATN_LVL_SHIFT)
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#define TEGRA_I2S_FIFO_SCR_FIFO1_ATN_LVL_SHIFT 0
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#define TEGRA_I2S_FIFO_SCR_FIFO1_ATN_LVL_MASK (3 << TEGRA_I2S_FIFO_SCR_FIFO1_ATN_LVL_SHIFT)
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#define TEGRA_I2S_FIFO_SCR_FIFO1_ATN_LVL_ONE_SLOT (TEGRA_I2S_FIFO_ATN_LVL_ONE_SLOT << TEGRA_I2S_FIFO_SCR_FIFO1_ATN_LVL_SHIFT)
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#define TEGRA_I2S_FIFO_SCR_FIFO1_ATN_LVL_FOUR_SLOTS (TEGRA_I2S_FIFO_ATN_LVL_FOUR_SLOTS << TEGRA_I2S_FIFO_SCR_FIFO1_ATN_LVL_SHIFT)
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#define TEGRA_I2S_FIFO_SCR_FIFO1_ATN_LVL_EIGHT_SLOTS (TEGRA_I2S_FIFO_ATN_LVL_EIGHT_SLOTS << TEGRA_I2S_FIFO_SCR_FIFO1_ATN_LVL_SHIFT)
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#define TEGRA_I2S_FIFO_SCR_FIFO1_ATN_LVL_TWELVE_SLOTS (TEGRA_I2S_FIFO_ATN_LVL_TWELVE_SLOTS << TEGRA_I2S_FIFO_SCR_FIFO1_ATN_LVL_SHIFT)
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struct tegra_i2s {
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struct snd_soc_dai_driver dai;
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struct clk *clk_i2s;
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int clk_refs;
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struct tegra_pcm_dma_params capture_dma_data;
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struct tegra_pcm_dma_params playback_dma_data;
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void __iomem *regs;
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struct dentry *debug;
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u32 reg_ctrl;
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};
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#endif
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