[alsa-devel] Applied "ASoC: img: Add driver for parallel output controller" to the asoc tree
Mark Brown
broonie at kernel.org
Wed Nov 4 15:59:24 CET 2015
The patch
ASoC: img: Add driver for parallel output controller
has been applied to the asoc tree at
git://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git
All being well this means that it will be integrated into the linux-next
tree (usually sometime in the next 24 hours) and sent to Linus during
the next merge window (or sooner if it is a bug fix), however if
problems are discovered then the patch may be dropped or reverted.
You may get further e-mails resulting from automated or manual testing
and review of the tree, please engage with people reporting problems and
send followup patches addressing any issues that are reported if needed.
If any updates are required or you are submitting further changes they
should be sent as incremental updates against current git, existing
patches will not be replaced.
Please add any relevant lists and maintainers to the CCs when replying
to this mail.
Thanks,
Mark
>From d61e345b455544af420ccdd29e59c49c3415702f Mon Sep 17 00:00:00 2001
From: "Damien.Horsley" <Damien.Horsley at imgtec.com>
Date: Wed, 4 Nov 2015 14:40:52 +0000
Subject: [PATCH] ASoC: img: Add driver for parallel output controller
Add driver for Imagination Technologies parallel output
controller
Signed-off-by: Damien.Horsley <Damien.Horsley at imgtec.com>
Signed-off-by: Mark Brown <broonie at kernel.org>
---
sound/soc/img/Kconfig | 8 +
sound/soc/img/Makefile | 1 +
sound/soc/img/img-parallel-out.c | 327 +++++++++++++++++++++++++++++++++++++++
3 files changed, 336 insertions(+)
create mode 100644 sound/soc/img/img-parallel-out.c
diff --git a/sound/soc/img/Kconfig b/sound/soc/img/Kconfig
index fe83c8e..3bb507e 100644
--- a/sound/soc/img/Kconfig
+++ b/sound/soc/img/Kconfig
@@ -18,3 +18,11 @@ config SND_SOC_IMG_I2S_OUT
help
Say Y or M if you want to add support for I2S out driver for
Imagination Technologies I2S out device.
+
+config SND_SOC_IMG_PARALLEL_OUT
+ tristate "Imagination Parallel Output Device Driver"
+ depends on SND_SOC_IMG
+ select SND_SOC_GENERIC_DMAENGINE_PCM
+ help
+ Say Y or M if you want to add support for parallel out driver for
+ Imagination Technologies parallel out device.
diff --git a/sound/soc/img/Makefile b/sound/soc/img/Makefile
index c41a4af..da89763 100644
--- a/sound/soc/img/Makefile
+++ b/sound/soc/img/Makefile
@@ -1,2 +1,3 @@
obj-$(CONFIG_SND_SOC_IMG_I2S_IN) += img-i2s-in.o
obj-$(CONFIG_SND_SOC_IMG_I2S_OUT) += img-i2s-out.o
+obj-$(CONFIG_SND_SOC_IMG_PARALLEL_OUT) += img-parallel-out.o
diff --git a/sound/soc/img/img-parallel-out.c b/sound/soc/img/img-parallel-out.c
new file mode 100644
index 0000000..beda18b
--- /dev/null
+++ b/sound/soc/img/img-parallel-out.c
@@ -0,0 +1,327 @@
+/*
+ * IMG parallel output controller driver
+ *
+ * Copyright (C) 2015 Imagination Technologies Ltd.
+ *
+ * Author: Damien Horsley <Damien.Horsley at imgtec.com>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ */
+
+#include <linux/clk.h>
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/platform_device.h>
+#include <linux/pm_runtime.h>
+#include <linux/reset.h>
+
+#include <sound/core.h>
+#include <sound/dmaengine_pcm.h>
+#include <sound/initval.h>
+#include <sound/pcm.h>
+#include <sound/pcm_params.h>
+#include <sound/soc.h>
+
+#define IMG_PRL_OUT_TX_FIFO 0
+
+#define IMG_PRL_OUT_CTL 0x4
+#define IMG_PRL_OUT_CTL_CH_MASK BIT(4)
+#define IMG_PRL_OUT_CTL_PACKH_MASK BIT(3)
+#define IMG_PRL_OUT_CTL_EDGE_MASK BIT(2)
+#define IMG_PRL_OUT_CTL_ME_MASK BIT(1)
+#define IMG_PRL_OUT_CTL_SRST_MASK BIT(0)
+
+struct img_prl_out {
+ void __iomem *base;
+ struct clk *clk_sys;
+ struct clk *clk_ref;
+ struct snd_dmaengine_dai_dma_data dma_data;
+ struct device *dev;
+ struct reset_control *rst;
+};
+
+static int img_prl_out_suspend(struct device *dev)
+{
+ struct img_prl_out *prl = dev_get_drvdata(dev);
+
+ clk_disable_unprepare(prl->clk_ref);
+
+ return 0;
+}
+
+static int img_prl_out_resume(struct device *dev)
+{
+ struct img_prl_out *prl = dev_get_drvdata(dev);
+ int ret;
+
+ ret = clk_prepare_enable(prl->clk_ref);
+ if (ret) {
+ dev_err(dev, "clk_enable failed: %d\n", ret);
+ return ret;
+ }
+
+ return 0;
+}
+
+static inline void img_prl_out_writel(struct img_prl_out *prl,
+ u32 val, u32 reg)
+{
+ writel(val, prl->base + reg);
+}
+
+static inline u32 img_prl_out_readl(struct img_prl_out *prl, u32 reg)
+{
+ return readl(prl->base + reg);
+}
+
+static void img_prl_out_reset(struct img_prl_out *prl)
+{
+ u32 ctl;
+
+ ctl = img_prl_out_readl(prl, IMG_PRL_OUT_CTL) &
+ ~IMG_PRL_OUT_CTL_ME_MASK;
+
+ reset_control_assert(prl->rst);
+ reset_control_deassert(prl->rst);
+
+ img_prl_out_writel(prl, ctl, IMG_PRL_OUT_CTL);
+}
+
+static int img_prl_out_trigger(struct snd_pcm_substream *substream, int cmd,
+ struct snd_soc_dai *dai)
+{
+ struct img_prl_out *prl = snd_soc_dai_get_drvdata(dai);
+ u32 reg;
+
+ switch (cmd) {
+ case SNDRV_PCM_TRIGGER_START:
+ case SNDRV_PCM_TRIGGER_RESUME:
+ case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
+ reg = img_prl_out_readl(prl, IMG_PRL_OUT_CTL);
+ reg |= IMG_PRL_OUT_CTL_ME_MASK;
+ img_prl_out_writel(prl, reg, IMG_PRL_OUT_CTL);
+ break;
+ case SNDRV_PCM_TRIGGER_STOP:
+ case SNDRV_PCM_TRIGGER_SUSPEND:
+ case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
+ img_prl_out_reset(prl);
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static int img_prl_out_hw_params(struct snd_pcm_substream *substream,
+ struct snd_pcm_hw_params *params, struct snd_soc_dai *dai)
+{
+ struct img_prl_out *prl = snd_soc_dai_get_drvdata(dai);
+ unsigned int rate, channels;
+ u32 reg, control_set = 0;
+ snd_pcm_format_t format;
+
+ rate = params_rate(params);
+ format = params_format(params);
+ channels = params_channels(params);
+
+ switch (params_format(params)) {
+ case SNDRV_PCM_FORMAT_S32_LE:
+ control_set |= IMG_PRL_OUT_CTL_PACKH_MASK;
+ break;
+ case SNDRV_PCM_FORMAT_S24_LE:
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ if (channels != 2)
+ return -EINVAL;
+
+ clk_set_rate(prl->clk_ref, rate * 256);
+
+ reg = img_prl_out_readl(prl, IMG_PRL_OUT_CTL);
+ reg = (reg & ~IMG_PRL_OUT_CTL_PACKH_MASK) | control_set;
+ img_prl_out_writel(prl, reg, IMG_PRL_OUT_CTL);
+
+ return 0;
+}
+
+static int img_prl_out_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
+{
+ struct img_prl_out *prl = snd_soc_dai_get_drvdata(dai);
+ u32 reg, control_set;
+
+ switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
+ case SND_SOC_DAIFMT_NB_NF:
+ break;
+ case SND_SOC_DAIFMT_NB_IF:
+ control_set |= IMG_PRL_OUT_CTL_EDGE_MASK;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ reg = img_prl_out_readl(prl, IMG_PRL_OUT_CTL);
+ reg = (reg & ~IMG_PRL_OUT_CTL_EDGE_MASK) | control_set;
+ img_prl_out_writel(prl, reg, IMG_PRL_OUT_CTL);
+
+ return 0;
+}
+
+static const struct snd_soc_dai_ops img_prl_out_dai_ops = {
+ .trigger = img_prl_out_trigger,
+ .hw_params = img_prl_out_hw_params,
+ .set_fmt = img_prl_out_set_fmt
+};
+
+static int img_prl_out_dai_probe(struct snd_soc_dai *dai)
+{
+ struct img_prl_out *prl = snd_soc_dai_get_drvdata(dai);
+
+ snd_soc_dai_init_dma_data(dai, &prl->dma_data, NULL);
+
+ return 0;
+}
+
+static struct snd_soc_dai_driver img_prl_out_dai = {
+ .probe = img_prl_out_dai_probe,
+ .playback = {
+ .channels_min = 2,
+ .channels_max = 2,
+ .rates = SNDRV_PCM_RATE_8000_192000,
+ .formats = SNDRV_PCM_FMTBIT_S32_LE | SNDRV_PCM_FMTBIT_S24_LE
+ },
+ .ops = &img_prl_out_dai_ops
+};
+
+static const struct snd_soc_component_driver img_prl_out_component = {
+ .name = "img-prl-out"
+};
+
+static int img_prl_out_probe(struct platform_device *pdev)
+{
+ struct img_prl_out *prl;
+ struct resource *res;
+ void __iomem *base;
+ int ret;
+ struct device *dev = &pdev->dev;
+
+ prl = devm_kzalloc(&pdev->dev, sizeof(*prl), GFP_KERNEL);
+ if (!prl)
+ return -ENOMEM;
+
+ platform_set_drvdata(pdev, prl);
+
+ prl->dev = &pdev->dev;
+
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ base = devm_ioremap_resource(&pdev->dev, res);
+ if (IS_ERR(base))
+ return PTR_ERR(base);
+
+ prl->base = base;
+
+ prl->rst = devm_reset_control_get(&pdev->dev, "rst");
+ if (IS_ERR(prl->rst)) {
+ if (PTR_ERR(prl->rst) != -EPROBE_DEFER)
+ dev_err(&pdev->dev, "No top level reset found\n");
+ return PTR_ERR(prl->rst);
+ }
+
+ prl->clk_sys = devm_clk_get(&pdev->dev, "sys");
+ if (IS_ERR(prl->clk_sys)) {
+ if (PTR_ERR(prl->clk_sys) != -EPROBE_DEFER)
+ dev_err(dev, "Failed to acquire clock 'sys'\n");
+ return PTR_ERR(prl->clk_sys);
+ }
+
+ prl->clk_ref = devm_clk_get(&pdev->dev, "ref");
+ if (IS_ERR(prl->clk_ref)) {
+ if (PTR_ERR(prl->clk_ref) != -EPROBE_DEFER)
+ dev_err(dev, "Failed to acquire clock 'ref'\n");
+ return PTR_ERR(prl->clk_ref);
+ }
+
+ ret = clk_prepare_enable(prl->clk_sys);
+ if (ret)
+ return ret;
+
+ img_prl_out_writel(prl, IMG_PRL_OUT_CTL_EDGE_MASK, IMG_PRL_OUT_CTL);
+ img_prl_out_reset(prl);
+
+ pm_runtime_enable(&pdev->dev);
+ if (!pm_runtime_enabled(&pdev->dev)) {
+ ret = img_prl_out_resume(&pdev->dev);
+ if (ret)
+ goto err_pm_disable;
+ }
+
+ prl->dma_data.addr = res->start + IMG_PRL_OUT_TX_FIFO;
+ prl->dma_data.addr_width = 4;
+ prl->dma_data.maxburst = 4;
+
+ ret = devm_snd_soc_register_component(&pdev->dev,
+ &img_prl_out_component,
+ &img_prl_out_dai, 1);
+ if (ret)
+ goto err_suspend;
+
+ ret = devm_snd_dmaengine_pcm_register(&pdev->dev, NULL, 0);
+ if (ret)
+ goto err_suspend;
+
+ return 0;
+
+err_suspend:
+ if (!pm_runtime_status_suspended(&pdev->dev))
+ img_prl_out_suspend(&pdev->dev);
+err_pm_disable:
+ pm_runtime_disable(&pdev->dev);
+ clk_disable_unprepare(prl->clk_sys);
+
+ return ret;
+}
+
+static int img_prl_out_dev_remove(struct platform_device *pdev)
+{
+ struct img_prl_out *prl = platform_get_drvdata(pdev);
+
+ pm_runtime_disable(&pdev->dev);
+ if (!pm_runtime_status_suspended(&pdev->dev))
+ img_prl_out_suspend(&pdev->dev);
+
+ clk_disable_unprepare(prl->clk_sys);
+
+ return 0;
+}
+
+static const struct of_device_id img_prl_out_of_match[] = {
+ { .compatible = "img,parallel-out" },
+ {}
+};
+MODULE_DEVICE_TABLE(of, img_prl_out_of_match);
+
+static const struct dev_pm_ops img_prl_out_pm_ops = {
+ SET_RUNTIME_PM_OPS(img_prl_out_suspend,
+ img_prl_out_resume, NULL)
+};
+
+static struct platform_driver img_prl_out_driver = {
+ .driver = {
+ .name = "img-parallel-out",
+ .of_match_table = img_prl_out_of_match,
+ .pm = &img_prl_out_pm_ops
+ },
+ .probe = img_prl_out_probe,
+ .remove = img_prl_out_dev_remove
+};
+module_platform_driver(img_prl_out_driver);
+
+MODULE_AUTHOR("Damien Horsley <Damien.Horsley at imgtec.com>");
+MODULE_DESCRIPTION("IMG Parallel Output Driver");
+MODULE_LICENSE("GPL v2");
--
2.6.1
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