From patchwork Thu Feb 12 02:10:10 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kenneth Westfield X-Patchwork-Id: 5815361 Return-Path: X-Original-To: patchwork-linux-arm-msm@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork1.web.kernel.org (Postfix) with ESMTP id 12E259F30C for ; Thu, 12 Feb 2015 02:10:59 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id A905C201ED for ; Thu, 12 Feb 2015 02:10:57 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 1D4E620218 for ; Thu, 12 Feb 2015 02:10:56 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754782AbbBLCKn (ORCPT ); Wed, 11 Feb 2015 21:10:43 -0500 Received: from smtp.codeaurora.org ([198.145.29.96]:55746 "EHLO smtp.codeaurora.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754655AbbBLCK1 (ORCPT ); Wed, 11 Feb 2015 21:10:27 -0500 Received: from smtp.codeaurora.org (localhost [127.0.0.1]) by smtp.codeaurora.org (Postfix) with ESMTP id 0F153140C06; Thu, 12 Feb 2015 02:10:27 +0000 (UTC) Received: by smtp.codeaurora.org (Postfix, from userid 486) id 001AD140C08; Thu, 12 Feb 2015 02:10:26 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Spam-Level: X-Spam-Status: No, score=-6.9 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, T_RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 Received: from localhost (i-global254.qualcomm.com [199.106.103.254]) (using TLSv1.2 with cipher DHE-RSA-AES128-SHA (128/128 bits)) (No client certificate requested) (Authenticated sender: kwestfie@smtp.codeaurora.org) by smtp.codeaurora.org (Postfix) with ESMTPSA id DE071140BFD; Thu, 12 Feb 2015 02:10:25 +0000 (UTC) From: Kenneth Westfield To: Mark Brown , Takashi Iwai , Liam Girdwood , David Brown , Bryan Huntsman , Greg KH , Banajit Goswami , Patrick Lai Cc: ALSA Mailing List , Device Tree Mailing List , MSM Mailing List , Kenneth Westfield Subject: [Patch V5 07/12] ASoC: ipq806x: Add LPASS CPU DAI driver Date: Wed, 11 Feb 2015 18:10:10 -0800 Message-Id: <1423707015-14527-8-git-send-email-kwestfie@codeaurora.org> X-Mailer: git-send-email 1.8.2.1 In-Reply-To: <1423707015-14527-1-git-send-email-kwestfie@codeaurora.org> References: <1423707015-14527-1-git-send-email-kwestfie@codeaurora.org> X-Virus-Scanned: ClamAV using ClamSMTP Sender: linux-arm-msm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP From: Kenneth Westfield Add the CPU DAI driver for the Qualcomm Technologies low-power audio subsystem (LPASS). Signed-off-by: Kenneth Westfield Acked-by: Banajit Goswami --- sound/soc/qcom/lpass-cpu.c | 481 +++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 481 insertions(+) create mode 100644 sound/soc/qcom/lpass-cpu.c diff --git a/sound/soc/qcom/lpass-cpu.c b/sound/soc/qcom/lpass-cpu.c new file mode 100644 index 0000000000000000000000000000000000000000..c178142989abce9c46565fccbaf3b140cb289b19 --- /dev/null +++ b/sound/soc/qcom/lpass-cpu.c @@ -0,0 +1,481 @@ +/* + * Copyright (c) 2010-2011,2013-2015 The Linux Foundation. All rights reserved. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 and + * only 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. + * + * lpass-cpu.c -- ALSA SoC CPU DAI driver for QTi LPASS + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include "lpass-lpaif-ipq806x.h" +#include "lpass.h" + +static int lpass_cpu_daiops_set_sysclk(struct snd_soc_dai *dai, int clk_id, + unsigned int freq, int dir) +{ + struct lpass_data *drvdata = snd_soc_dai_get_drvdata(dai); + int ret; + + ret = clk_set_rate(drvdata->mi2s_osr_clk, freq); + if (ret) + dev_err(dai->dev, "%s() error setting mi2s osrclk to %u: %d\n", + __func__, freq, ret); + + return ret; +} + +static int lpass_cpu_daiops_startup(struct snd_pcm_substream *substream, + struct snd_soc_dai *dai) +{ + struct lpass_data *drvdata = snd_soc_dai_get_drvdata(dai); + int ret; + + ret = clk_prepare_enable(drvdata->mi2s_osr_clk); + if (ret) { + dev_err(dai->dev, "%s() error in enabling mi2s osr clk: %d\n", + __func__, ret); + return ret; + } + + ret = clk_prepare_enable(drvdata->mi2s_bit_clk); + if (ret) { + dev_err(dai->dev, "%s() error in enabling mi2s bit clk: %d\n", + __func__, ret); + clk_disable_unprepare(drvdata->mi2s_osr_clk); + return ret; + } + + return 0; +} + +static void lpass_cpu_daiops_shutdown(struct snd_pcm_substream *substream, + struct snd_soc_dai *dai) +{ + struct lpass_data *drvdata = snd_soc_dai_get_drvdata(dai); + + clk_disable_unprepare(drvdata->mi2s_bit_clk); + clk_disable_unprepare(drvdata->mi2s_osr_clk); +} + +static int lpass_cpu_daiops_hw_params(struct snd_pcm_substream *substream, + struct snd_pcm_hw_params *params, struct snd_soc_dai *dai) +{ + struct lpass_data *drvdata = snd_soc_dai_get_drvdata(dai); + snd_pcm_format_t format = params_format(params); + unsigned int channels = params_channels(params); + unsigned int rate = params_rate(params); + unsigned int regval; + int bitwidth, ret; + + bitwidth = snd_pcm_format_width(format); + if (bitwidth < 0) { + dev_err(dai->dev, "%s() invalid bit width given: %d\n", + __func__, bitwidth); + return bitwidth; + } + + regval = LPAIF_I2SCTL_LOOPBACK_DISABLE | + LPAIF_I2SCTL_WSSRC_INTERNAL; + + switch (bitwidth) { + case 16: + regval |= LPAIF_I2SCTL_BITWIDTH_16; + break; + case 24: + regval |= LPAIF_I2SCTL_BITWIDTH_24; + break; + case 32: + regval |= LPAIF_I2SCTL_BITWIDTH_32; + break; + default: + dev_err(dai->dev, "%s() invalid bitwidth given: %d\n", + __func__, bitwidth); + return -EINVAL; + } + + switch (channels) { + case 1: + regval |= LPAIF_I2SCTL_SPKMODE_SD0; + regval |= LPAIF_I2SCTL_SPKMONO_MONO; + break; + case 2: + regval |= LPAIF_I2SCTL_SPKMODE_SD0; + regval |= LPAIF_I2SCTL_SPKMONO_STEREO; + break; + case 4: + regval |= LPAIF_I2SCTL_SPKMODE_QUAD01; + regval |= LPAIF_I2SCTL_SPKMONO_STEREO; + break; + case 6: + regval |= LPAIF_I2SCTL_SPKMODE_6CH; + regval |= LPAIF_I2SCTL_SPKMONO_STEREO; + break; + case 8: + regval |= LPAIF_I2SCTL_SPKMODE_8CH; + regval |= LPAIF_I2SCTL_SPKMONO_STEREO; + break; + default: + dev_err(dai->dev, "%s() invalid channels given: %u\n", + __func__, channels); + return -EINVAL; + } + + ret = regmap_write(drvdata->lpaif_map, + LPAIF_I2SCTL_REG(LPAIF_I2S_PORT_MI2S), regval); + if (ret) { + dev_err(dai->dev, "%s() error writing to i2sctl reg: %d\n", + __func__, ret); + return ret; + } + + ret = clk_set_rate(drvdata->mi2s_bit_clk, rate * bitwidth * 2); + if (ret) { + dev_err(dai->dev, "%s() error setting mi2s bitclk to %u: %d\n", + __func__, rate * bitwidth * 2, ret); + return ret; + } + + return 0; +} + +static int lpass_cpu_daiops_hw_free(struct snd_pcm_substream *substream, + struct snd_soc_dai *dai) +{ + struct lpass_data *drvdata = snd_soc_dai_get_drvdata(dai); + int ret; + + ret = regmap_write(drvdata->lpaif_map, + LPAIF_I2SCTL_REG(LPAIF_I2S_PORT_MI2S), 0); + if (ret) + dev_err(dai->dev, "%s() error writing to i2sctl reg: %d\n", + __func__, ret); + + return ret; +} + +static int lpass_cpu_daiops_prepare(struct snd_pcm_substream *substream, + struct snd_soc_dai *dai) +{ + struct lpass_data *drvdata = snd_soc_dai_get_drvdata(dai); + int ret; + + ret = regmap_update_bits(drvdata->lpaif_map, + LPAIF_I2SCTL_REG(LPAIF_I2S_PORT_MI2S), + LPAIF_I2SCTL_SPKEN_MASK, LPAIF_I2SCTL_SPKEN_ENABLE); + if (ret) + dev_err(dai->dev, "%s() error writing to i2sctl reg: %d\n", + __func__, ret); + + return ret; +} + +static int lpass_cpu_daiops_trigger(struct snd_pcm_substream *substream, + int cmd, struct snd_soc_dai *dai) +{ + struct lpass_data *drvdata = snd_soc_dai_get_drvdata(dai); + int ret; + + switch (cmd) { + case SNDRV_PCM_TRIGGER_START: + case SNDRV_PCM_TRIGGER_RESUME: + case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: + ret = regmap_update_bits(drvdata->lpaif_map, + LPAIF_I2SCTL_REG(LPAIF_I2S_PORT_MI2S), + LPAIF_I2SCTL_SPKEN_MASK, + LPAIF_I2SCTL_SPKEN_ENABLE); + if (ret) + dev_err(dai->dev, "%s() error writing to i2sctl reg: %d\n", + __func__, ret); + break; + case SNDRV_PCM_TRIGGER_STOP: + case SNDRV_PCM_TRIGGER_SUSPEND: + case SNDRV_PCM_TRIGGER_PAUSE_PUSH: + ret = regmap_update_bits(drvdata->lpaif_map, + LPAIF_I2SCTL_REG(LPAIF_I2S_PORT_MI2S), + LPAIF_I2SCTL_SPKEN_MASK, + LPAIF_I2SCTL_SPKEN_DISABLE); + if (ret) + dev_err(dai->dev, "%s() error writing to i2sctl reg: %d\n", + __func__, ret); + break; + } + + return ret; +} + +static struct snd_soc_dai_ops lpass_cpu_dai_ops = { + .set_sysclk = lpass_cpu_daiops_set_sysclk, + .startup = lpass_cpu_daiops_startup, + .shutdown = lpass_cpu_daiops_shutdown, + .hw_params = lpass_cpu_daiops_hw_params, + .hw_free = lpass_cpu_daiops_hw_free, + .prepare = lpass_cpu_daiops_prepare, + .trigger = lpass_cpu_daiops_trigger, +}; + +static int lpass_cpu_dai_probe(struct snd_soc_dai *dai) +{ + struct lpass_data *drvdata = snd_soc_dai_get_drvdata(dai); + int ret; + + /* ensure audio hardware is disabled */ + ret = regmap_write(drvdata->lpaif_map, + LPAIF_I2SCTL_REG(LPAIF_I2S_PORT_MI2S), 0); + if (ret) + dev_err(dai->dev, "%s() error writing to i2sctl reg: %d\n", + __func__, ret); + + return ret; +} + +static struct snd_soc_dai_driver lpass_cpu_dai_driver = { + .playback = { + .stream_name = "lpass-cpu-playback", + .formats = SNDRV_PCM_FMTBIT_S16 | + SNDRV_PCM_FMTBIT_S24 | + SNDRV_PCM_FMTBIT_S32, + .rates = SNDRV_PCM_RATE_8000 | + SNDRV_PCM_RATE_16000 | + SNDRV_PCM_RATE_32000 | + SNDRV_PCM_RATE_48000 | + SNDRV_PCM_RATE_96000, + .rate_min = 8000, + .rate_max = 96000, + .channels_min = 1, + .channels_max = 8, + }, + .probe = &lpass_cpu_dai_probe, + .ops = &lpass_cpu_dai_ops, +}; + +static const struct snd_soc_component_driver lpass_cpu_comp_driver = { + .name = "lpass-cpu", +}; + +static bool lpass_cpu_regmap_writeable(struct device *dev, unsigned int reg) +{ + int i; + + for (i = 0; i < LPAIF_I2S_PORT_NUM; ++i) + if (reg == LPAIF_I2SCTL_REG(i)) + return true; + + for (i = 0; i < LPAIF_IRQ_PORT_NUM; ++i) { + if (reg == LPAIF_IRQEN_REG(i)) + return true; + if (reg == LPAIF_IRQCLEAR_REG(i)) + return true; + } + + for (i = 0; i < LPAIF_RDMA_CHAN_NUM; ++i) { + if (reg == LPAIF_RDMACTL_REG(i)) + return true; + if (reg == LPAIF_RDMABASE_REG(i)) + return true; + if (reg == LPAIF_RDMABUFF_REG(i)) + return true; + if (reg == LPAIF_RDMAPER_REG(i)) + return true; + } + + return false; +} + +static bool lpass_cpu_regmap_readable(struct device *dev, unsigned int reg) +{ + int i; + + for (i = 0; i < LPAIF_I2S_PORT_NUM; ++i) + if (reg == LPAIF_I2SCTL_REG(i)) + return true; + + for (i = 0; i < LPAIF_IRQ_PORT_NUM; ++i) { + if (reg == LPAIF_IRQEN_REG(i)) + return true; + if (reg == LPAIF_IRQSTAT_REG(i)) + return true; + } + + for (i = 0; i < LPAIF_RDMA_CHAN_NUM; ++i) { + if (reg == LPAIF_RDMACTL_REG(i)) + return true; + if (reg == LPAIF_RDMABASE_REG(i)) + return true; + if (reg == LPAIF_RDMABUFF_REG(i)) + return true; + if (reg == LPAIF_RDMACURR_REG(i)) + return true; + if (reg == LPAIF_RDMAPER_REG(i)) + return true; + } + + return false; +} + +static bool lpass_cpu_regmap_volatile(struct device *dev, unsigned int reg) +{ + int i; + + for (i = 0; i < LPAIF_IRQ_PORT_NUM; ++i) + if (reg == LPAIF_IRQSTAT_REG(i)) + return true; + + for (i = 0; i < LPAIF_RDMA_CHAN_NUM; ++i) + if (reg == LPAIF_RDMACURR_REG(i)) + return true; + + return false; +} + +static const struct regmap_config lpass_cpu_regmap_config = { + .reg_bits = 32, + .reg_stride = 4, + .val_bits = 32, + .max_register = LPAIF_RDMAPER_REG(LPAIF_RDMA_CHAN_MAX), + .writeable_reg = lpass_cpu_regmap_writeable, + .readable_reg = lpass_cpu_regmap_readable, + .volatile_reg = lpass_cpu_regmap_volatile, + .cache_type = REGCACHE_FLAT, +}; + +static int lpass_cpu_platform_probe(struct platform_device *pdev) +{ + struct lpass_data *drvdata; + struct resource *res; + int ret; + + drvdata = devm_kzalloc(&pdev->dev, sizeof(struct lpass_data), + GFP_KERNEL); + if (!drvdata) + return -ENOMEM; + platform_set_drvdata(pdev, drvdata); + + res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "lpass-lpaif"); + if (!res) { + dev_err(&pdev->dev, "%s() error getting resource\n", __func__); + return -ENODEV; + } + + drvdata->lpaif = devm_ioremap_resource(&pdev->dev, res); + if (IS_ERR((void const __force *)drvdata->lpaif)) { + dev_err(&pdev->dev, "%s() error mapping reg resource: %ld\n", + __func__, + PTR_ERR((void const __force *)drvdata->lpaif)); + return PTR_ERR((void const __force *)drvdata->lpaif); + } + + drvdata->lpaif_map = devm_regmap_init_mmio(&pdev->dev, drvdata->lpaif, + &lpass_cpu_regmap_config); + if (IS_ERR(drvdata->lpaif_map)) { + dev_err(&pdev->dev, "%s() error initializing regmap: %ld\n", + __func__, PTR_ERR(drvdata->lpaif_map)); + return PTR_ERR(drvdata->lpaif_map); + } + + drvdata->mi2s_osr_clk = devm_clk_get(&pdev->dev, "mi2s-osr-clk"); + if (IS_ERR(drvdata->mi2s_osr_clk)) { + dev_err(&pdev->dev, "%s() error getting mi2s-osr-clk: %ld\n", + __func__, PTR_ERR(drvdata->mi2s_osr_clk)); + return PTR_ERR(drvdata->mi2s_osr_clk); + } + + drvdata->mi2s_bit_clk = devm_clk_get(&pdev->dev, "mi2s-bit-clk"); + if (IS_ERR(drvdata->mi2s_bit_clk)) { + dev_err(&pdev->dev, "%s() error getting mi2s-bit-clk: %ld\n", + __func__, PTR_ERR(drvdata->mi2s_bit_clk)); + return PTR_ERR(drvdata->mi2s_bit_clk); + } + + drvdata->ahbix_clk = devm_clk_get(&pdev->dev, "ahbix-clk"); + if (IS_ERR(drvdata->ahbix_clk)) { + dev_err(&pdev->dev, "%s() error getting ahbix-clk: %ld\n", + __func__, PTR_ERR(drvdata->ahbix_clk)); + return PTR_ERR(drvdata->ahbix_clk); + } + + ret = clk_set_rate(drvdata->ahbix_clk, LPASS_AHBIX_CLOCK_FREQUENCY); + if (ret) { + dev_err(&pdev->dev, "%s() error setting rate on ahbix_clk: %d\n", + __func__, ret); + return ret; + } + + ret = clk_prepare_enable(drvdata->ahbix_clk); + if (ret) { + dev_err(&pdev->dev, "%s() Error enabling ahbix_clk: %d\n", + __func__, ret); + return ret; + } + + ret = devm_snd_soc_register_component(&pdev->dev, + &lpass_cpu_comp_driver, &lpass_cpu_dai_driver, 1); + if (ret) { + dev_err(&pdev->dev, "%s() error registering cpu driver: %d\n", + __func__, ret); + goto err_clk; + } + + ret = asoc_qcom_lpass_platform_register(pdev); + if (ret) { + dev_err(&pdev->dev, "%s() error registering platform driver: %d\n", + __func__, ret); + goto err_clk; + } + + return 0; + +err_clk: + clk_disable_unprepare(drvdata->ahbix_clk); + return ret; +} + +static int lpass_cpu_platform_remove(struct platform_device *pdev) +{ + struct lpass_data *drvdata = platform_get_drvdata(pdev); + + clk_disable_unprepare(drvdata->ahbix_clk); + + return 0; +} + +#ifdef CONFIG_OF +static const struct of_device_id lpass_cpu_device_id[] = { + { .compatible = "qcom,lpass-cpu" }, + {} +}; +MODULE_DEVICE_TABLE(of, lpass_cpu_device_id); +#endif + +static struct platform_driver lpass_cpu_platform_driver = { + .driver = { + .name = "lpass-cpu", + .of_match_table = of_match_ptr(lpass_cpu_device_id), + }, + .probe = lpass_cpu_platform_probe, + .remove = lpass_cpu_platform_remove, +}; +module_platform_driver(lpass_cpu_platform_driver); + +MODULE_DESCRIPTION("QTi LPASS CPU Driver"); +MODULE_LICENSE("GPL v2");