diff options
author | Srinivas Kandagatla <srinivas.kandagatla@linaro.org> | 2015-05-22 18:53:52 +0300 |
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committer | Mark Brown <broonie@kernel.org> | 2015-05-25 17:04:32 +0300 |
commit | dc1ebd1811e984301f98f3f9edd192327d2e35e1 (patch) | |
tree | 5d1c65053fc13c5f6472d6262393736818c7c30b /sound/soc/qcom/lpass-apq8016.c | |
parent | b202836a548c1985137b5b648a4afe3cc5959f4b (diff) | |
download | linux-dc1ebd1811e984301f98f3f9edd192327d2e35e1.tar.xz |
ASoC: qcom: Add apq8016 lpass driver support
This patch adds apq8016 lpass driver support. APQ8016 has 4 MI2S which
can be routed to one internal codec and 2 external codec interfaces.
Primary, Secondary, Quaternary I2S can do Rx(playback) and Tertiary and
Quaternary can do Tx(capture).
Tested-by: Kenneth Westfield <kwestfie@codeaurora.org>
Acked-by: Kenneth Westfield <kwestfie@codeaurora.org>
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'sound/soc/qcom/lpass-apq8016.c')
-rw-r--r-- | sound/soc/qcom/lpass-apq8016.c | 242 |
1 files changed, 242 insertions, 0 deletions
diff --git a/sound/soc/qcom/lpass-apq8016.c b/sound/soc/qcom/lpass-apq8016.c new file mode 100644 index 000000000000..94efc01020c4 --- /dev/null +++ b/sound/soc/qcom/lpass-apq8016.c @@ -0,0 +1,242 @@ +/* + * 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-apq8016.c -- ALSA SoC CPU DAI driver for APQ8016 LPASS + * + */ + + +#include <linux/clk.h> +#include <linux/device.h> +#include <linux/err.h> +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/of.h> +#include <linux/platform_device.h> +#include <sound/pcm.h> +#include <sound/pcm_params.h> +#include <sound/soc.h> +#include <sound/soc-dai.h> + +#include <dt-bindings/sound/apq8016-lpass.h> +#include "lpass-lpaif-reg.h" +#include "lpass.h" + +static struct snd_soc_dai_driver apq8016_lpass_cpu_dai_driver[] = { + [MI2S_PRIMARY] = { + .id = MI2S_PRIMARY, + .name = "Primary MI2S", + .playback = { + .stream_name = "Primary 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 = &asoc_qcom_lpass_cpu_dai_probe, + .ops = &asoc_qcom_lpass_cpu_dai_ops, + }, + [MI2S_SECONDARY] = { + .id = MI2S_SECONDARY, + .name = "Secondary MI2S", + .playback = { + .stream_name = "Secondary 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 = &asoc_qcom_lpass_cpu_dai_probe, + .ops = &asoc_qcom_lpass_cpu_dai_ops, + }, + [MI2S_TERTIARY] = { + .id = MI2S_TERTIARY, + .name = "Tertiary MI2S", + .capture = { + .stream_name = "Tertiary Capture", + .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 = &asoc_qcom_lpass_cpu_dai_probe, + .ops = &asoc_qcom_lpass_cpu_dai_ops, + }, + [MI2S_QUATERNARY] = { + .id = MI2S_QUATERNARY, + .name = "Quatenary MI2S", + .playback = { + .stream_name = "Quatenary 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, + }, + .capture = { + .stream_name = "Quatenary Capture", + .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 = &asoc_qcom_lpass_cpu_dai_probe, + .ops = &asoc_qcom_lpass_cpu_dai_ops, + }, +}; + +static int apq8016_lpass_alloc_dma_channel(struct lpass_data *drvdata) +{ + struct lpass_variant *v = drvdata->variant; + int chan = find_first_zero_bit(&drvdata->rdma_ch_bit_map, + v->rdma_channels); + + if (chan >= v->rdma_channels) + return -EBUSY; + + set_bit(chan, &drvdata->rdma_ch_bit_map); + + return chan; +} + +static int apq8016_lpass_free_dma_channel(struct lpass_data *drvdata, int chan) +{ + clear_bit(chan, &drvdata->rdma_ch_bit_map); + + return 0; +} + +static int apq8016_lpass_init(struct platform_device *pdev) +{ + struct lpass_data *drvdata = platform_get_drvdata(pdev); + struct device *dev = &pdev->dev; + int ret; + + drvdata->pcnoc_mport_clk = devm_clk_get(dev, "pcnoc-mport-clk"); + if (IS_ERR(drvdata->pcnoc_mport_clk)) { + dev_err(&pdev->dev, "%s() error getting pcnoc-mport-clk: %ld\n", + __func__, PTR_ERR(drvdata->pcnoc_mport_clk)); + return PTR_ERR(drvdata->pcnoc_mport_clk); + } + + ret = clk_prepare_enable(drvdata->pcnoc_mport_clk); + if (ret) { + dev_err(&pdev->dev, "%s() Error enabling pcnoc-mport-clk: %d\n", + __func__, ret); + return ret; + } + + drvdata->pcnoc_sway_clk = devm_clk_get(dev, "pcnoc-sway-clk"); + if (IS_ERR(drvdata->pcnoc_sway_clk)) { + dev_err(&pdev->dev, "%s() error getting pcnoc-sway-clk: %ld\n", + __func__, PTR_ERR(drvdata->pcnoc_sway_clk)); + return PTR_ERR(drvdata->pcnoc_sway_clk); + } + + ret = clk_prepare_enable(drvdata->pcnoc_sway_clk); + if (ret) { + dev_err(&pdev->dev, "%s() Error enabling pcnoc_sway_clk: %d\n", + __func__, ret); + return ret; + } + + return 0; +} + +static int apq8016_lpass_exit(struct platform_device *pdev) +{ + struct lpass_data *drvdata = platform_get_drvdata(pdev); + + clk_disable_unprepare(drvdata->pcnoc_mport_clk); + clk_disable_unprepare(drvdata->pcnoc_sway_clk); + + return 0; +} + + +static struct lpass_variant apq8016_data = { + .i2sctrl_reg_base = 0x1000, + .i2sctrl_reg_stride = 0x1000, + .i2s_ports = 4, + .irq_reg_base = 0x6000, + .irq_reg_stride = 0x1000, + .irq_ports = 3, + .rdma_reg_base = 0x8400, + .rdma_reg_stride = 0x1000, + .rdma_channels = 2, + .rdmactl_audif_start = 1, + .dai_driver = apq8016_lpass_cpu_dai_driver, + .num_dai = ARRAY_SIZE(apq8016_lpass_cpu_dai_driver), + .init = apq8016_lpass_init, + .exit = apq8016_lpass_exit, + .alloc_dma_channel = apq8016_lpass_alloc_dma_channel, + .free_dma_channel = apq8016_lpass_free_dma_channel, +}; + +static const struct of_device_id apq8016_lpass_cpu_device_id[] = { + { .compatible = "qcom,lpass-cpu-apq8016", .data = &apq8016_data }, + {} +}; +MODULE_DEVICE_TABLE(of, apq8016_lpass_cpu_device_id); + +static struct platform_driver apq8016_lpass_cpu_platform_driver = { + .driver = { + .name = "apq8016-lpass-cpu", + .of_match_table = of_match_ptr(apq8016_lpass_cpu_device_id), + }, + .probe = asoc_qcom_lpass_cpu_platform_probe, + .remove = asoc_qcom_lpass_cpu_platform_remove, +}; +module_platform_driver(apq8016_lpass_cpu_platform_driver); + +MODULE_DESCRIPTION("APQ8016 LPASS CPU Driver"); +MODULE_LICENSE("GPL v2"); + |