Merge tag 'asoc-v4.5' into asoc-next

ASoC: Updates for v4.5

This is quite a busy release on the driver front with a lot of new
drivers being added but comparatively quiet on the core side with only
one big change going in and that a fairly straightforward refactoring.

 - Conversion of the array of DAI links to a list by Mengdong Lin,
   supporting dynamically adding and removing DAI links.
 - Some more fixes for the topology code, though it is still not final
   and ready for enabling in production.  We really need to get to the
   point where that can be done.
 - A pile of changes for Intel SkyLake drivers which hopefully deliver
   some useful initial functionality for systems with this chipset,
   though there is more work still to come.
 - New drivers for a number of Imagination Technologies IPs.
 - Lots of new features and cleanups for the Renesas drivers.
 - ANC support for WM5110.
 - New driver for Atmel class D speaker drivers.
 - New drivers for Cirrus CS47L24 and WM1831.
 - New driver for Dialog DA7128.
 - New drivers for Realtek RT5659 and RT56156.
 - New driver for Rockchip RK3036.
 - New driver for TI PC3168A

# gpg: Signature made Wed 23 Dec 2015 00:42:40 GMT using RSA key ID 5D5487D0
# gpg: Good signature from "Mark Brown <broonie@sirena.org.uk>"
# gpg:                 aka "Mark Brown <broonie@debian.org>"
# gpg:                 aka "Mark Brown <broonie@kernel.org>"
# gpg:                 aka "Mark Brown <broonie@tardis.ed.ac.uk>"
# gpg:                 aka "Mark Brown <broonie@linaro.org>"
# gpg:                 aka "Mark Brown <Mark.Brown@linaro.org>"
# gpg: WARNING: This key is not certified with a trusted signature!
# gpg:          There is no indication that the signature belongs to the owner.
# Primary key fingerprint: 3F25 68AA C269 98F9 E813  A1C5 C3F4 36CA 30F5 D8EB
#      Subkey fingerprint: ADE6 68AA 6757 18B5 9FE2  9FEA 24D6 8B72 5D54 87D0

1 files changed, 287 insertions, 0 deletions

diff --git a/sound/soc/img/pistachio-internal-dac.c b/sound/soc/img/pistachio-internal-dac.c
new file mode 100644
index 000000000000..162a0fd68c7b
--- /dev/null
+++ b/sound/soc/img/pistachio-internal-dac.c
@@ -0,0 +1,287 @@
+/*
+ * Pistachio internal dac driver
+ *
+ * Copyright (C) 2015 Imagination Technologies Ltd.
+ *
+ * Author: Damien Horsley <Damien.Horsley@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/delay.h>
+#include <linux/mfd/syscon.h>
+#include <linux/module.h>
+#include <linux/pm_runtime.h>
+#include <linux/regmap.h>
+#include <linux/regulator/consumer.h>
+
+#include <sound/pcm_params.h>
+#include <sound/soc.h>
+
+#define PISTACHIO_INTERNAL_DAC_CTRL			0x40
+#define PISTACHIO_INTERNAL_DAC_CTRL_PWR_SEL_MASK	0x2
+#define PISTACHIO_INTERNAL_DAC_CTRL_PWRDN_MASK		0x1
+
+#define PISTACHIO_INTERNAL_DAC_SRST			0x44
+#define PISTACHIO_INTERNAL_DAC_SRST_MASK		0x1
+
+#define PISTACHIO_INTERNAL_DAC_GTI_CTRL			0x48
+#define PISTACHIO_INTERNAL_DAC_GTI_CTRL_ADDR_SHIFT	0
+#define PISTACHIO_INTERNAL_DAC_GTI_CTRL_ADDR_MASK	0xFFF
+#define PISTACHIO_INTERNAL_DAC_GTI_CTRL_WE_MASK		0x1000
+#define PISTACHIO_INTERNAL_DAC_GTI_CTRL_WDATA_SHIFT	13
+#define PISTACHIO_INTERNAL_DAC_GTI_CTRL_WDATA_MASK	0x1FE000
+
+#define PISTACHIO_INTERNAL_DAC_PWR			0x1
+#define PISTACHIO_INTERNAL_DAC_PWR_MASK			0x1
+
+#define PISTACHIO_INTERNAL_DAC_FORMATS (SNDRV_PCM_FMTBIT_S24_LE |  \
+					SNDRV_PCM_FMTBIT_S32_LE)
+
+/* codec private data */
+struct pistachio_internal_dac {
+	struct regmap *regmap;
+	struct regulator *supply;
+	bool mute;
+};
+
+static const struct snd_kcontrol_new pistachio_internal_dac_snd_controls[] = {
+	SOC_SINGLE("Playback Switch", PISTACHIO_INTERNAL_DAC_CTRL, 2, 1, 1)
+};
+
+static const struct snd_soc_dapm_widget pistachio_internal_dac_widgets[] = {
+	SND_SOC_DAPM_DAC("DAC", "Playback", SND_SOC_NOPM, 0, 0),
+	SND_SOC_DAPM_OUTPUT("AOUTL"),
+	SND_SOC_DAPM_OUTPUT("AOUTR"),
+};
+
+static const struct snd_soc_dapm_route pistachio_internal_dac_routes[] = {
+	{ "AOUTL", NULL, "DAC" },
+	{ "AOUTR", NULL, "DAC" },
+};
+
+static void pistachio_internal_dac_reg_writel(struct regmap *top_regs,
+						u32 val, u32 reg)
+{
+	regmap_update_bits(top_regs, PISTACHIO_INTERNAL_DAC_GTI_CTRL,
+			PISTACHIO_INTERNAL_DAC_GTI_CTRL_ADDR_MASK,
+			reg << PISTACHIO_INTERNAL_DAC_GTI_CTRL_ADDR_SHIFT);
+
+	regmap_update_bits(top_regs, PISTACHIO_INTERNAL_DAC_GTI_CTRL,
+			PISTACHIO_INTERNAL_DAC_GTI_CTRL_WDATA_MASK,
+			val << PISTACHIO_INTERNAL_DAC_GTI_CTRL_WDATA_SHIFT);
+
+	regmap_update_bits(top_regs, PISTACHIO_INTERNAL_DAC_GTI_CTRL,
+			PISTACHIO_INTERNAL_DAC_GTI_CTRL_WE_MASK,
+			PISTACHIO_INTERNAL_DAC_GTI_CTRL_WE_MASK);
+
+	regmap_update_bits(top_regs, PISTACHIO_INTERNAL_DAC_GTI_CTRL,
+			PISTACHIO_INTERNAL_DAC_GTI_CTRL_WE_MASK, 0);
+}
+
+static void pistachio_internal_dac_pwr_off(struct pistachio_internal_dac *dac)
+{
+	regmap_update_bits(dac->regmap, PISTACHIO_INTERNAL_DAC_CTRL,
+		PISTACHIO_INTERNAL_DAC_CTRL_PWRDN_MASK,
+		PISTACHIO_INTERNAL_DAC_CTRL_PWRDN_MASK);
+
+	pistachio_internal_dac_reg_writel(dac->regmap, 0,
+					PISTACHIO_INTERNAL_DAC_PWR);
+}
+
+static void pistachio_internal_dac_pwr_on(struct pistachio_internal_dac *dac)
+{
+	regmap_update_bits(dac->regmap, PISTACHIO_INTERNAL_DAC_SRST,
+			PISTACHIO_INTERNAL_DAC_SRST_MASK,
+			PISTACHIO_INTERNAL_DAC_SRST_MASK);
+
+	regmap_update_bits(dac->regmap, PISTACHIO_INTERNAL_DAC_SRST,
+			PISTACHIO_INTERNAL_DAC_SRST_MASK, 0);
+
+	pistachio_internal_dac_reg_writel(dac->regmap,
+					PISTACHIO_INTERNAL_DAC_PWR_MASK,
+					PISTACHIO_INTERNAL_DAC_PWR);
+
+	regmap_update_bits(dac->regmap, PISTACHIO_INTERNAL_DAC_CTRL,
+			PISTACHIO_INTERNAL_DAC_CTRL_PWRDN_MASK, 0);
+}
+
+static struct snd_soc_dai_driver pistachio_internal_dac_dais[] = {
+	{
+		.name = "pistachio_internal_dac",
+		.playback = {
+			.stream_name = "Playback",
+			.channels_min = 2,
+			.channels_max = 2,
+			.rates = SNDRV_PCM_RATE_8000_48000,
+			.formats = PISTACHIO_INTERNAL_DAC_FORMATS,
+		}
+	},
+};
+
+static int pistachio_internal_dac_codec_probe(struct snd_soc_codec *codec)
+{
+	struct pistachio_internal_dac *dac = snd_soc_codec_get_drvdata(codec);
+
+	snd_soc_codec_init_regmap(codec, dac->regmap);
+
+	return 0;
+}
+
+static const struct snd_soc_codec_driver pistachio_internal_dac_driver = {
+	.probe = pistachio_internal_dac_codec_probe,
+	.idle_bias_off = true,
+	.controls = pistachio_internal_dac_snd_controls,
+	.num_controls = ARRAY_SIZE(pistachio_internal_dac_snd_controls),
+	.dapm_widgets = pistachio_internal_dac_widgets,
+	.num_dapm_widgets = ARRAY_SIZE(pistachio_internal_dac_widgets),
+	.dapm_routes = pistachio_internal_dac_routes,
+	.num_dapm_routes = ARRAY_SIZE(pistachio_internal_dac_routes),
+};
+
+static int pistachio_internal_dac_probe(struct platform_device *pdev)
+{
+	struct pistachio_internal_dac *dac;
+	int ret, voltage;
+	struct device *dev = &pdev->dev;
+	u32 reg;
+
+	dac = devm_kzalloc(dev, sizeof(*dac), GFP_KERNEL);
+
+	if (!dac)
+		return -ENOMEM;
+
+	platform_set_drvdata(pdev, dac);
+
+	dac->regmap = syscon_regmap_lookup_by_phandle(pdev->dev.of_node,
+							    "img,cr-top");
+	if (IS_ERR(dac->regmap))
+		return PTR_ERR(dac->regmap);
+
+	dac->supply = devm_regulator_get(dev, "VDD");
+	if (IS_ERR(dac->supply)) {
+		ret = PTR_ERR(dac->supply);
+		if (ret != -EPROBE_DEFER)
+			dev_err(dev, "failed to acquire supply 'VDD-supply': %d\n", ret);
+		return ret;
+	}
+
+	ret = regulator_enable(dac->supply);
+	if (ret) {
+		dev_err(dev, "failed to enable supply: %d\n", ret);
+		return ret;
+	}
+
+	voltage = regulator_get_voltage(dac->supply);
+
+	switch (voltage) {
+	case 1800000:
+		reg = 0;
+		break;
+	case 3300000:
+		reg = PISTACHIO_INTERNAL_DAC_CTRL_PWR_SEL_MASK;
+		break;
+	default:
+		dev_err(dev, "invalid voltage: %d\n", voltage);
+		ret = -EINVAL;
+		goto err_regulator;
+	}
+
+	regmap_update_bits(dac->regmap, PISTACHIO_INTERNAL_DAC_CTRL,
+			PISTACHIO_INTERNAL_DAC_CTRL_PWR_SEL_MASK, reg);
+
+	pistachio_internal_dac_pwr_off(dac);
+	pistachio_internal_dac_pwr_on(dac);
+
+	pm_runtime_set_active(dev);
+	pm_runtime_enable(dev);
+	pm_runtime_idle(dev);
+
+	ret = snd_soc_register_codec(dev, &pistachio_internal_dac_driver,
+			pistachio_internal_dac_dais,
+			ARRAY_SIZE(pistachio_internal_dac_dais));
+	if (ret) {
+		dev_err(dev, "failed to register codec: %d\n", ret);
+		goto err_pwr;
+	}
+
+	return 0;
+
+err_pwr:
+	pm_runtime_disable(&pdev->dev);
+	pistachio_internal_dac_pwr_off(dac);
+err_regulator:
+	regulator_disable(dac->supply);
+
+	return ret;
+}
+
+static int pistachio_internal_dac_remove(struct platform_device *pdev)
+{
+	struct pistachio_internal_dac *dac = dev_get_drvdata(&pdev->dev);
+
+	snd_soc_unregister_codec(&pdev->dev);
+	pm_runtime_disable(&pdev->dev);
+	pistachio_internal_dac_pwr_off(dac);
+	regulator_disable(dac->supply);
+
+	return 0;
+}
+
+#ifdef CONFIG_PM
+static int pistachio_internal_dac_rt_resume(struct device *dev)
+{
+	struct pistachio_internal_dac *dac = dev_get_drvdata(dev);
+	int ret;
+
+	ret = regulator_enable(dac->supply);
+	if (ret) {
+		dev_err(dev, "failed to enable supply: %d\n", ret);
+		return ret;
+	}
+
+	pistachio_internal_dac_pwr_on(dac);
+
+	return 0;
+}
+
+static int pistachio_internal_dac_rt_suspend(struct device *dev)
+{
+	struct pistachio_internal_dac *dac = dev_get_drvdata(dev);
+
+	pistachio_internal_dac_pwr_off(dac);
+
+	regulator_disable(dac->supply);
+
+	return 0;
+}
+#endif
+
+static const struct dev_pm_ops pistachio_internal_dac_pm_ops = {
+	SET_RUNTIME_PM_OPS(pistachio_internal_dac_rt_suspend,
+			pistachio_internal_dac_rt_resume, NULL)
+};
+
+static const struct of_device_id pistachio_internal_dac_of_match[] = {
+	{ .compatible = "img,pistachio-internal-dac" },
+	{}
+};
+MODULE_DEVICE_TABLE(of, pistachio_internal_dac_of_match);
+
+static struct platform_driver pistachio_internal_dac_plat_driver = {
+	.driver = {
+		.name = "img-pistachio-internal-dac",
+		.of_match_table = pistachio_internal_dac_of_match,
+		.pm = &pistachio_internal_dac_pm_ops
+	},
+	.probe = pistachio_internal_dac_probe,
+	.remove = pistachio_internal_dac_remove
+};
+module_platform_driver(pistachio_internal_dac_plat_driver);
+
+MODULE_DESCRIPTION("Pistachio Internal DAC driver");
+MODULE_AUTHOR("Damien Horsley <Damien.Horsley@imgtec.com>");
+MODULE_LICENSE("GPL v2");