From patchwork Wed Dec 19 23:17:34 2012 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Lucas Stach X-Patchwork-Id: 207545 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 2352B2C0097 for ; Thu, 20 Dec 2012 10:17:45 +1100 (EST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751665Ab2LSXRo (ORCPT ); Wed, 19 Dec 2012 18:17:44 -0500 Received: from ns.km20343-01.keymachine.de ([84.19.182.79]:35726 "EHLO km20343-01.keymachine.de" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1751521Ab2LSXRn (ORCPT ); Wed, 19 Dec 2012 18:17:43 -0500 Received: from localhost.localdomain (f053085050.adsl.alicedsl.de [78.53.85.50]) by km20343-01.keymachine.de (Postfix) with ESMTPA id 796207D4422; Thu, 20 Dec 2012 00:17:41 +0100 (CET) From: Lucas Stach To: alsa-devel@alsa-project.org Cc: patches@opensource.wolfsonmicro.com, Liam Girdwood , Mark Brown , Stephen Warren , linux-tegra@vger.kernel.org, Marcel Ziswiler Subject: =?UTF-8?q?=5BPATCH=205/7=5D=20ASoC=3A=20tegra=3A=20add=20ac97=20host=20driver?= Date: Thu, 20 Dec 2012 00:17:34 +0100 Message-Id: <1355959056-6009-5-git-send-email-dev@lynxeye.de> X-Mailer: git-send-email 1.7.11.7 In-Reply-To: <1355959056-6009-1-git-send-email-dev@lynxeye.de> References: <1355959056-6009-1-git-send-email-dev@lynxeye.de> MIME-Version: 1.0 Sender: linux-tegra-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-tegra@vger.kernel.org This adds the driver for the Tegra 2x AC97 host controller. Signed-off-by: Marcel Ziswiler Signed-off-by: Lucas Stach --- sound/soc/tegra/Kconfig | 8 + sound/soc/tegra/Makefile | 2 + sound/soc/tegra/tegra20_ac97.c | 479 +++++++++++++++++++++++++++++++++++++++++ sound/soc/tegra/tegra20_ac97.h | 95 ++++++++ 4 Dateien geändert, 584 Zeilen hinzugefügt(+) create mode 100644 sound/soc/tegra/tegra20_ac97.c create mode 100644 sound/soc/tegra/tegra20_ac97.h diff --git a/sound/soc/tegra/Kconfig b/sound/soc/tegra/Kconfig index 19e5fe7..763c68d 100644 --- a/sound/soc/tegra/Kconfig +++ b/sound/soc/tegra/Kconfig @@ -6,6 +6,14 @@ config SND_SOC_TEGRA help Say Y or M here if you want support for SoC audio on Tegra. +config SND_SOC_TEGRA20_AC97 + tristate + depends on SND_SOC_TEGRA && ARCH_TEGRA_2x_SOC + help + Say Y or M if you want to add support for codecs attached to the + Tegra20 AC97 interface. You will also need to select the individual + machine drivers to support below. + config SND_SOC_TEGRA20_DAS tristate depends on SND_SOC_TEGRA && ARCH_TEGRA_2x_SOC diff --git a/sound/soc/tegra/Makefile b/sound/soc/tegra/Makefile index 391e78a..02513d9 100644 --- a/sound/soc/tegra/Makefile +++ b/sound/soc/tegra/Makefile @@ -1,6 +1,7 @@ # Tegra platform Support snd-soc-tegra-pcm-objs := tegra_pcm.o snd-soc-tegra-utils-objs += tegra_asoc_utils.o +snd-soc-tegra20-ac97-objs := tegra20_ac97.o snd-soc-tegra20-das-objs := tegra20_das.o snd-soc-tegra20-i2s-objs := tegra20_i2s.o snd-soc-tegra20-spdif-objs := tegra20_spdif.o @@ -9,6 +10,7 @@ snd-soc-tegra30-i2s-objs := tegra30_i2s.o obj-$(CONFIG_SND_SOC_TEGRA) += snd-soc-tegra-pcm.o obj-$(CONFIG_SND_SOC_TEGRA) += snd-soc-tegra-utils.o +obj-$(CONFIG_SND_SOC_TEGRA20_AC97) += snd-soc-tegra20-ac97.o obj-$(CONFIG_SND_SOC_TEGRA20_DAS) += snd-soc-tegra20-das.o obj-$(CONFIG_SND_SOC_TEGRA20_I2S) += snd-soc-tegra20-i2s.o obj-$(CONFIG_SND_SOC_TEGRA20_SPDIF) += snd-soc-tegra20-spdif.o diff --git a/sound/soc/tegra/tegra20_ac97.c b/sound/soc/tegra/tegra20_ac97.c new file mode 100644 index 0000000..a2f71cf --- /dev/null +++ b/sound/soc/tegra/tegra20_ac97.c @@ -0,0 +1,479 @@ +/* + * tegra20_ac97.c - Tegra20 AC97 platform driver + * + * Copyright (c) 2012 Lucas Stach + * + * Partly based on code copyright/by: + * + * Copyright (c) 2011,2012 Toradex 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. + * + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include "tegra_asoc_utils.h" +#include "tegra20_ac97.h" + +#define DRV_NAME "tegra20-ac97" + +static struct tegra20_ac97 *workdata; + +static void tegra20_ac97_codec_reset(struct snd_ac97 *ac97) +{ + u32 readback; + unsigned long timeout; + + /* reset line is not driven by DAC pad group, have to toggle GPIO */ + gpio_set_value(workdata->reset_gpio, 0); + udelay(2); + + gpio_set_value(workdata->reset_gpio, 1); + udelay(2); + + timeout = jiffies + msecs_to_jiffies(100); + + do { + regmap_read(workdata->regmap, TEGRA20_AC97_STATUS1, &readback); + if (readback & TEGRA20_AC97_STATUS1_CODEC1_RDY) + break; + usleep_range(1000, 2000); + } while (!time_after(jiffies, timeout)); +} + +static void tegra20_ac97_codec_warm_reset(struct snd_ac97 *ac97) +{ + u32 readback; + unsigned long timeout; + + /* + * although sync line is driven by the DAC pad group warm reset using + * the controller cmd is not working, have to toggle sync line + * manually. + */ + gpio_request(workdata->sync_gpio, "codec-sync"); + + gpio_direction_output(workdata->sync_gpio, 1); + + udelay(2); + gpio_set_value(workdata->sync_gpio, 0); + udelay(2); + gpio_free(workdata->sync_gpio); + + timeout = jiffies + msecs_to_jiffies(100); + + do { + regmap_read(workdata->regmap, TEGRA20_AC97_STATUS1, &readback); + if (readback & TEGRA20_AC97_STATUS1_CODEC1_RDY) + break; + usleep_range(1000, 2000); + } while (!time_after(jiffies, timeout)); +} + +static unsigned short tegra20_ac97_codec_read(struct snd_ac97 *ac97_snd, + unsigned short reg) +{ + u32 readback; + unsigned long timeout; + + regmap_write(workdata->regmap, TEGRA20_AC97_CMD, + (((reg | 0x80) << TEGRA20_AC97_CMD_CMD_ADDR_SHIFT) & + TEGRA20_AC97_CMD_CMD_ADDR_MASK) | + TEGRA20_AC97_CMD_BUSY); + + timeout = jiffies + msecs_to_jiffies(100); + + do { + regmap_read(workdata->regmap, TEGRA20_AC97_STATUS1, &readback); + if (readback & TEGRA20_AC97_STATUS1_STA_VALID1) + break; + usleep_range(1000, 2000); + } while (!time_after(jiffies, timeout)); + + return ((readback & TEGRA20_AC97_STATUS1_STA_DATA1_MASK) >> + TEGRA20_AC97_STATUS1_STA_DATA1_SHIFT); +} + +static void tegra20_ac97_codec_write(struct snd_ac97 *ac97_snd, + unsigned short reg, unsigned short val) +{ + u32 readback; + unsigned long timeout; + + regmap_write(workdata->regmap, TEGRA20_AC97_CMD, + ((reg << TEGRA20_AC97_CMD_CMD_ADDR_SHIFT) & + TEGRA20_AC97_CMD_CMD_ADDR_MASK) | + ((val << TEGRA20_AC97_CMD_CMD_DATA_SHIFT) & + TEGRA20_AC97_CMD_CMD_DATA_MASK) | + TEGRA20_AC97_CMD_BUSY); + + timeout = jiffies + msecs_to_jiffies(100); + + do { + regmap_read(workdata->regmap, TEGRA20_AC97_CMD, &readback); + if (!(readback & TEGRA20_AC97_CMD_BUSY)) + break; + usleep_range(1000, 2000); + } while (!time_after(jiffies, timeout)); +} + +struct snd_ac97_bus_ops soc_ac97_ops = { + .read = tegra20_ac97_codec_read, + .write = tegra20_ac97_codec_write, + .reset = tegra20_ac97_codec_reset, + .warm_reset = tegra20_ac97_codec_warm_reset, +}; +EXPORT_SYMBOL_GPL(soc_ac97_ops); + +static inline void tegra20_ac97_start_playback(struct tegra20_ac97 *ac97) +{ + regmap_update_bits(ac97->regmap, TEGRA20_AC97_FIFO1_SCR, + TEGRA20_AC97_FIFO_SCR_PB_QRT_MT_EN, + TEGRA20_AC97_FIFO_SCR_PB_QRT_MT_EN); + + regmap_update_bits(ac97->regmap, TEGRA20_AC97_CTRL, + TEGRA20_AC97_CTRL_PCM_DAC_EN | TEGRA20_AC97_CTRL_STM_EN, + TEGRA20_AC97_CTRL_PCM_DAC_EN | TEGRA20_AC97_CTRL_STM_EN); +} + +static inline void tegra20_ac97_stop_playback(struct tegra20_ac97 *ac97) +{ + regmap_update_bits(ac97->regmap, TEGRA20_AC97_FIFO1_SCR, + TEGRA20_AC97_FIFO_SCR_PB_QRT_MT_EN, 0); + + regmap_update_bits(ac97->regmap, TEGRA20_AC97_CTRL, + TEGRA20_AC97_CTRL_PCM_DAC_EN, 0); +} + +static inline void tegra20_ac97_start_capture(struct tegra20_ac97 *ac97) +{ + regmap_update_bits(ac97->regmap, TEGRA20_AC97_FIFO1_SCR, + TEGRA20_AC97_FIFO_SCR_REC_FULL_EN, + TEGRA20_AC97_FIFO_SCR_REC_FULL_EN); +} + +static inline void tegra20_ac97_stop_capture(struct tegra20_ac97 *ac97) +{ + regmap_update_bits(ac97->regmap, TEGRA20_AC97_FIFO1_SCR, + TEGRA20_AC97_FIFO_SCR_REC_FULL_EN, 0); +} + +static int tegra20_ac97_trigger(struct snd_pcm_substream *substream, int cmd, + struct snd_soc_dai *dai) +{ + struct tegra20_ac97 *ac97 = snd_soc_dai_get_drvdata(dai); + + switch (cmd) { + case SNDRV_PCM_TRIGGER_START: + case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: + case SNDRV_PCM_TRIGGER_RESUME: + if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) + tegra20_ac97_start_playback(ac97); + else + tegra20_ac97_start_capture(ac97); + break; + case SNDRV_PCM_TRIGGER_STOP: + case SNDRV_PCM_TRIGGER_PAUSE_PUSH: + case SNDRV_PCM_TRIGGER_SUSPEND: + if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) + tegra20_ac97_stop_playback(ac97); + else + tegra20_ac97_stop_capture(ac97); + break; + default: + return -EINVAL; + } + + return 0; +} + +static const struct snd_soc_dai_ops tegra20_ac97_dai_ops = { + .trigger = tegra20_ac97_trigger, +}; + +static int tegra20_ac97_probe(struct snd_soc_dai *dai) +{ + struct tegra20_ac97 *ac97 = snd_soc_dai_get_drvdata(dai); + + dai->capture_dma_data = &ac97->capture_dma_data; + dai->playback_dma_data = &ac97->playback_dma_data; + + return 0; +} + +static struct snd_soc_dai_driver tegra20_ac97_dai = { + .name = "tegra-ac97-pcm", + .ac97_control = 1, + .probe = tegra20_ac97_probe, + .playback = { + .stream_name = "PCM Playback", + .channels_min = 2, + .channels_max = 2, + .rates = SNDRV_PCM_RATE_8000_48000, + .formats = SNDRV_PCM_FMTBIT_S16_LE, + }, + .capture = { + .stream_name = "PCM Capture", + .channels_min = 2, + .channels_max = 2, + .rates = SNDRV_PCM_RATE_8000_48000, + .formats = SNDRV_PCM_FMTBIT_S16_LE, + }, + .ops = &tegra20_ac97_dai_ops, +}; + +static bool tegra20_ac97_wr_rd_reg(struct device *dev, unsigned int reg) +{ + switch (reg) { + case TEGRA20_AC97_CTRL: + case TEGRA20_AC97_CMD: + case TEGRA20_AC97_STATUS1: + case TEGRA20_AC97_FIFO1_SCR: + case TEGRA20_AC97_FIFO_TX1: + case TEGRA20_AC97_FIFO_RX1: + return true; + default: + break; + } + + return false; +} + +static bool tegra20_ac97_volatile_reg(struct device *dev, unsigned int reg) +{ + switch (reg) { + case TEGRA20_AC97_CMD: + case TEGRA20_AC97_STATUS1: + case TEGRA20_AC97_FIFO1_SCR: + case TEGRA20_AC97_FIFO_TX1: + case TEGRA20_AC97_FIFO_RX1: + return true; + default: + break; + } + + return false; +} + +static bool tegra20_ac97_precious_reg(struct device *dev, unsigned int reg) +{ + switch (reg) { + case TEGRA20_AC97_FIFO_TX1: + case TEGRA20_AC97_FIFO_RX1: + return true; + default: + break; + } + + return false; +} + +static const struct regmap_config tegra20_ac97_regmap_config = { + .reg_bits = 32, + .reg_stride = 4, + .val_bits = 32, + .max_register = TEGRA20_AC97_FIFO_RX1, + .writeable_reg = tegra20_ac97_wr_rd_reg, + .readable_reg = tegra20_ac97_wr_rd_reg, + .volatile_reg = tegra20_ac97_volatile_reg, + .precious_reg = tegra20_ac97_precious_reg, + .cache_type = REGCACHE_RBTREE, +}; + +static int tegra20_ac97_platform_probe(struct platform_device *pdev) +{ + struct tegra20_ac97 *ac97; + struct resource *mem, *memregion; + u32 of_dma[2]; + void __iomem *regs; + int ret = 0; + + ac97 = devm_kzalloc(&pdev->dev, sizeof(struct tegra20_ac97), + GFP_KERNEL); + if (!ac97) { + dev_err(&pdev->dev, "Can't allocate tegra20_ac97\n"); + ret = -ENOMEM; + goto err; + } + dev_set_drvdata(&pdev->dev, ac97); + + ac97->clk_ac97 = clk_get(&pdev->dev, NULL); + if (IS_ERR(ac97->clk_ac97)) { + dev_err(&pdev->dev, "Can't retrieve ac97 clock\n"); + ret = PTR_ERR(ac97->clk_ac97); + goto err; + } + + mem = platform_get_resource(pdev, IORESOURCE_MEM, 0); + if (!mem) { + dev_err(&pdev->dev, "No memory resource\n"); + ret = -ENODEV; + goto err_clk_put; + } + + memregion = devm_request_mem_region(&pdev->dev, mem->start, + resource_size(mem), DRV_NAME); + if (!memregion) { + dev_err(&pdev->dev, "Memory region already claimed\n"); + ret = -EBUSY; + goto err_clk_put; + } + + regs = devm_ioremap(&pdev->dev, mem->start, resource_size(mem)); + if (!regs) { + dev_err(&pdev->dev, "ioremap failed\n"); + ret = -ENOMEM; + goto err_clk_put; + } + + ac97->regmap = devm_regmap_init_mmio(&pdev->dev, regs, + &tegra20_ac97_regmap_config); + if (IS_ERR(ac97->regmap)) { + dev_err(&pdev->dev, "regmap init failed\n"); + ret = PTR_ERR(ac97->regmap); + goto err_clk_put; + } + + if (of_property_read_u32_array(pdev->dev.of_node, + "nvidia,dma-request-selector", + of_dma, 2) < 0) { + dev_err(&pdev->dev, "No DMA resource\n"); + ret = -ENODEV; + goto err_clk_put; + } + + ac97->reset_gpio = of_get_named_gpio(pdev->dev.of_node, + "nvidia,codec-reset-gpio", 0); + if (gpio_is_valid(ac97->reset_gpio)) { + ret = devm_gpio_request_one(&pdev->dev, ac97->reset_gpio, + GPIOF_OUT_INIT_HIGH, "codec-reset"); + if (ret) { + dev_err(&pdev->dev, "could not get codec-reset GPIO\n"); + goto err_clk_put; + } + } else { + dev_err(&pdev->dev, "no codec-reset GPIO supplied\n"); + goto err_clk_put; + } + + ac97->sync_gpio = of_get_named_gpio(pdev->dev.of_node, + "nvidia,codec-sync-gpio", 0); + if (!gpio_is_valid(ac97->sync_gpio)) { + dev_err(&pdev->dev, "no codec-sync GPIO supplied\n"); + goto err_clk_put; + } + + ac97->capture_dma_data.addr = mem->start + TEGRA20_AC97_FIFO_RX1; + ac97->capture_dma_data.wrap = 4; + ac97->capture_dma_data.width = 32; + ac97->capture_dma_data.req_sel = of_dma[1]; + + ac97->playback_dma_data.addr = mem->start + TEGRA20_AC97_FIFO_TX1; + ac97->playback_dma_data.wrap = 4; + ac97->playback_dma_data.width = 32; + ac97->playback_dma_data.req_sel = of_dma[1]; + + ret = snd_soc_register_dais(&pdev->dev, &tegra20_ac97_dai, 1); + if (ret) { + dev_err(&pdev->dev, "Could not register DAI: %d\n", ret); + ret = -ENOMEM; + goto err_clk_put; + } + + ret = tegra_pcm_platform_register(&pdev->dev); + if (ret) { + dev_err(&pdev->dev, "Could not register PCM: %d\n", ret); + goto err_unregister_dai; + } + + ret = tegra_asoc_utils_init(&ac97->util_data, &pdev->dev); + if (ret) + goto err_unregister_pcm; + + ret = tegra_asoc_utils_set_ac97_rate(&ac97->util_data); + if (ret) + goto err_asoc_utils_fini; + + ret = clk_prepare_enable(ac97->clk_ac97); + if (ret) { + dev_err(&pdev->dev, "clk_enable failed: %d\n", ret); + goto err_asoc_utils_fini; + } + + /* XXX: crufty ASoC AC97 API - only one AC97 codec allowed */ + workdata = ac97; + + return 0; + +err_asoc_utils_fini: + tegra_asoc_utils_fini(&ac97->util_data); +err_unregister_pcm: + tegra_pcm_platform_unregister(&pdev->dev); +err_unregister_dai: + snd_soc_unregister_dai(&pdev->dev); +err_clk_put: + clk_put(ac97->clk_ac97); +err: + return ret; +} + +static int tegra20_ac97_platform_remove(struct platform_device *pdev) +{ + struct tegra20_ac97 *ac97 = dev_get_drvdata(&pdev->dev); + + tegra_pcm_platform_unregister(&pdev->dev); + snd_soc_unregister_dai(&pdev->dev); + + tegra_asoc_utils_fini(&ac97->util_data); + + clk_disable_unprepare(ac97->clk_ac97); + clk_put(ac97->clk_ac97); + + return 0; +} + +static const struct of_device_id tegra20_ac97_of_match[] __devinitconst = { + { .compatible = "nvidia,tegra20-ac97", }, + {}, +}; + +static struct platform_driver tegra20_ac97_driver = { + .driver = { + .name = DRV_NAME, + .owner = THIS_MODULE, + .of_match_table = tegra20_ac97_of_match, + }, + .probe = tegra20_ac97_platform_probe, + .remove = tegra20_ac97_platform_remove, +}; +module_platform_driver(tegra20_ac97_driver); + +MODULE_AUTHOR("Lucas Stach"); +MODULE_DESCRIPTION("Tegra20 AC97 ASoC driver"); +MODULE_LICENSE("GPL"); +MODULE_ALIAS("platform:" DRV_NAME); +MODULE_DEVICE_TABLE(of, tegra20_ac97_of_match); diff --git a/sound/soc/tegra/tegra20_ac97.h b/sound/soc/tegra/tegra20_ac97.h new file mode 100644 index 0000000..a805aae --- /dev/null +++ b/sound/soc/tegra/tegra20_ac97.h @@ -0,0 +1,95 @@ +/* + * tegra20_ac97.c - Definitions for the Tegra20 AC97 controller driver + * + * Copyright (c) 2012 Lucas Stach + * + * Partly based on code copyright/by: + * + * Copyright (c) 2011,2012 Toradex 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. + * + */ + +#ifndef __TEGRA20_AC97_H__ +#define __TEGRA20_AC97_H__ + +#include "tegra_pcm.h" + +#define TEGRA20_AC97_CTRL 0x00 +#define TEGRA20_AC97_CMD 0x04 +#define TEGRA20_AC97_STATUS1 0x08 +/* ... */ +#define TEGRA20_AC97_FIFO1_SCR 0x1c +/* ... */ +#define TEGRA20_AC97_FIFO_TX1 0x40 +#define TEGRA20_AC97_FIFO_RX1 0x80 + +/* TEGRA20_AC97_CTRL */ +#define TEGRA20_AC97_CTRL_STM2_EN (1 << 16) +#define TEGRA20_AC97_CTRL_DOUBLE_SAMPLING_EN (1 << 11) +#define TEGRA20_AC97_CTRL_IO_CNTRL_EN (1 << 10) +#define TEGRA20_AC97_CTRL_HSET_DAC_EN (1 << 9) +#define TEGRA20_AC97_CTRL_LINE2_DAC_EN (1 << 8) +#define TEGRA20_AC97_CTRL_PCM_LFE_EN (1 << 7) +#define TEGRA20_AC97_CTRL_PCM_SUR_EN (1 << 6) +#define TEGRA20_AC97_CTRL_PCM_CEN_DAC_EN (1 << 5) +#define TEGRA20_AC97_CTRL_LINE1_DAC_EN (1 << 4) +#define TEGRA20_AC97_CTRL_PCM_DAC_EN (1 << 3) +#define TEGRA20_AC97_CTRL_COLD_RESET (1 << 2) +#define TEGRA20_AC97_CTRL_WARM_RESET (1 << 1) +#define TEGRA20_AC97_CTRL_STM_EN (1 << 0) + +/* TEGRA20_AC97_CMD */ +#define TEGRA20_AC97_CMD_CMD_ADDR_SHIFT 24 +#define TEGRA20_AC97_CMD_CMD_ADDR_MASK (0xff << TEGRA20_AC97_CMD_CMD_ADDR_SHIFT) +#define TEGRA20_AC97_CMD_CMD_DATA_SHIFT 8 +#define TEGRA20_AC97_CMD_CMD_DATA_MASK (0xffff << TEGRA20_AC97_CMD_CMD_DATA_SHIFT) +#define TEGRA20_AC97_CMD_CMD_ID_SHIFT 2 +#define TEGRA20_AC97_CMD_CMD_ID_MASK (0x3 << TEGRA20_AC97_CMD_CMD_ID_SHIFT) +#define TEGRA20_AC97_CMD_BUSY (1 << 0) + +/* TEGRA20_AC97_STATUS1 */ +#define TEGRA20_AC97_STATUS1_STA_ADDR1_SHIFT 24 +#define TEGRA20_AC97_STATUS1_STA_ADDR1_MASK (0xff << TEGRA20_AC97_STATUS1_STA_ADDR1_SHIFT) +#define TEGRA20_AC97_STATUS1_STA_DATA1_SHIFT 8 +#define TEGRA20_AC97_STATUS1_STA_DATA1_MASK (0xffff << TEGRA20_AC97_STATUS1_STA_DATA1_SHIFT) +#define TEGRA20_AC97_STATUS1_STA_VALID1 (1 << 2) +#define TEGRA20_AC97_STATUS1_STANDBY1 (1 << 1) +#define TEGRA20_AC97_STATUS1_CODEC1_RDY (1 << 0) + +/* TEGRA20_AC97_FIFO1_SCR */ +#define TEGRA20_AC97_FIFO_SCR_REC_MT_CNT_SHIFT 27 +#define TEGRA20_AC97_FIFO_SCR_REC_MT_CNT_MASK (0x1f << TEGRA20_AC97_FIFO_SCR_REC_MT_CNT_SHIFT) +#define TEGRA20_AC97_FIFO_SCR_PB_MT_CNT_SHIFT 22 +#define TEGRA20_AC97_FIFO_SCR_PB_MT_CNT_MASK (0x1f << TEGRA20_AC97_FIFO_SCR_PB_MT_CNT_SHIFT) +#define TEGRA20_AC97_FIFO_SCR_REC_OVERRUN_INT_STA (1 << 19) +#define TEGRA20_AC97_FIFO_SCR_PB_UNDERRUN_INT_STA (1 << 18) +#define TEGRA20_AC97_FIFO_SCR_REC_FORCE_MT (1 << 17) +#define TEGRA20_AC97_FIFO_SCR_PB_FORCE_MT (1 << 16) +#define TEGRA20_AC97_FIFO_SCR_REC_FULL_EN (1 << 15) +#define TEGRA20_AC97_FIFO_SCR_REC_3QRT_FULL_EN (1 << 14) +#define TEGRA20_AC97_FIFO_SCR_REC_QRT_FULL_EN (1 << 13) +#define TEGRA20_AC97_FIFO_SCR_REC_EMPTY_EN (1 << 12) +#define TEGRA20_AC97_FIFO_SCR_PB_NOT_FULL_EN (1 << 11) +#define TEGRA20_AC97_FIFO_SCR_PB_QRT_MT_EN (1 << 10) +#define TEGRA20_AC97_FIFO_SCR_PB_3QRT_MT_EN (1 << 9) +#define TEGRA20_AC97_FIFO_SCR_PB_EMPTY_MT_EN (1 << 8) + +struct tegra20_ac97 { + struct clk *clk_ac97; + struct tegra_pcm_dma_params capture_dma_data; + struct tegra_pcm_dma_params playback_dma_data; + struct regmap *regmap; + int reset_gpio; + int sync_gpio; + struct tegra_asoc_utils_data util_data; +}; +#endif /* __TEGRA20_AC97_H__ */