[PATCH 8/8] media: uniphier: add LD20 adapter driver for ISDB

[Katsuhiro Suzuki <suzuki.katsuhiro@socionext.com>]

This patch adds UniPhier LD20 DVB adapter driver for ISDB-S/T
that equipments SONY SUT-PJ series using CXD2858 tuner and Socionext
MN884434 demodulator.

Signed-off-by: Katsuhiro Suzuki <suzuki.katsuhiro@socionext.com>
---
 drivers/media/platform/uniphier/Kconfig       |  10 +
 drivers/media/platform/uniphier/Makefile      |   1 +
 .../platform/uniphier/ld20-mn884434-helene.c  | 274 ++++++++++++++++++
 3 files changed, 285 insertions(+)
 create mode 100644 drivers/media/platform/uniphier/ld20-mn884434-helene.c

diff --git a/drivers/media/platform/uniphier/Kconfig b/drivers/media/platform/uniphier/Kconfig
index 0fc9bbfc170b..1ad2b0f2716c 100644
--- a/drivers/media/platform/uniphier/Kconfig
+++ b/drivers/media/platform/uniphier/Kconfig
@@ -25,3 +25,13 @@ config DVB_UNIPHIER_LD11_ISDB
 	  Demod: Socionext MN884433
 	  Tuner: SONY HELENE (CXD2858ER)
 	  Say Y when you want to support this adapters.
+
+config DVB_UNIPHIER_LD20_ISDB
+	bool "Support UniPhier LD20 ISDB adapters"
+	depends on DVB_UNIPHIER
+	help
+	  Driver for LD20 ISDB-S/T adapters which use
+	  Demux: Socionext LD20 HSC
+	  Demod: Socionext MN884434
+	  Tuner: SONY HELENE (CXD2858ER)
+	  Say Y when you want to support this adapters.
diff --git a/drivers/media/platform/uniphier/Makefile b/drivers/media/platform/uniphier/Makefile
index e4b06f8a37b5..9c12456748f9 100644
--- a/drivers/media/platform/uniphier/Makefile
+++ b/drivers/media/platform/uniphier/Makefile
@@ -9,3 +9,4 @@ ccflags-y += -Idrivers/media/tuners/
 
 uniphier-dvb-y += uniphier-adapter.o
 uniphier-dvb-$(CONFIG_DVB_UNIPHIER_LD11_ISDB) += ld11-mn884433-helene.o
+uniphier-dvb-$(CONFIG_DVB_UNIPHIER_LD20_ISDB) += ld20-mn884434-helene.o
diff --git a/drivers/media/platform/uniphier/ld20-mn884434-helene.c b/drivers/media/platform/uniphier/ld20-mn884434-helene.c
new file mode 100644
index 000000000000..7ccbe52a50fb
--- /dev/null
+++ b/drivers/media/platform/uniphier/ld20-mn884434-helene.c
@@ -0,0 +1,274 @@
+// SPDX-License-Identifier: GPL-2.0
+//
+// Socionext UniPhier LD20 adapter driver for ISDB.
+// Using Socionext MN884434 ISDB-S/ISDB-T demodulator and
+// SONY HELENE tuner.
+//
+// Copyright (c) 2018 Socionext Inc.
+
+#include <linux/clk.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/of_platform.h>
+#include <linux/reset.h>
+
+#include "sc1501a.h"
+#include "helene.h"
+#include "hsc.h"
+#include "uniphier-adapter.h"
+
+static struct sc1501a_config mn884434_conf[] = {
+	{ .if_freq = LOW_IF_4MHZ, },
+	{ .if_freq = LOW_IF_4MHZ, },
+};
+
+static int uniphier_adapter_demod_probe(struct uniphier_adapter_priv *priv)
+{
+	const struct uniphier_adapter_spec *spec = priv->spec;
+	struct device *dev = &priv->pdev->dev;
+	struct device_node *node;
+	int ret, i;
+
+	priv->demod_mclk = devm_clk_get(dev, "demod-mclk");
+	if (IS_ERR(priv->demod_mclk)) {
+		dev_err(dev, "Failed to request demod-mclk: %ld\n",
+			PTR_ERR(priv->demod_mclk));
+		return PTR_ERR(priv->demod_mclk);
+	}
+
+	priv->demod_gpio = devm_gpiod_get_optional(dev, "reset-demod",
+						   GPIOD_OUT_HIGH);
+	if (IS_ERR(priv->demod_gpio)) {
+		dev_err(dev, "Failed to request demod_gpio: %ld\n",
+			PTR_ERR(priv->demod_gpio));
+		return PTR_ERR(priv->demod_gpio);
+	}
+
+	node = of_parse_phandle(dev->of_node, "demod-i2c-bus", 0);
+	if (!node) {
+		dev_err(dev, "Failed to parse demod-i2c-bus\n");
+		return -ENODEV;
+	}
+
+	priv->demod_i2c_adapter = of_find_i2c_adapter_by_node(node);
+	if (!priv->demod_i2c_adapter) {
+		dev_err(dev, "Failed to find demod i2c adapter\n");
+		of_node_put(node);
+		return -ENODEV;
+	}
+	of_node_put(node);
+
+	mn884434_conf[0].reset_gpio = priv->demod_gpio;
+	for (i = 0; i < spec->adapters; i++) {
+		struct i2c_client *c;
+
+		mn884434_conf[i].mclk = priv->demod_mclk;
+		mn884434_conf[i].fe = &priv->fe[i].fe;
+
+		c = dvb_module_probe(spec->demod_i2c_info[i].type, NULL,
+				     priv->demod_i2c_adapter,
+				     spec->demod_i2c_info[i].addr,
+				     &mn884434_conf[i]);
+		if (!c) {
+			dev_err(dev, "Failed to probe demod\n");
+			ret = -ENODEV;
+			goto err_out;
+		}
+		priv->fe[i].demod_i2c = c;
+	}
+
+	return 0;
+
+err_out:
+	for (i = 0; i < spec->adapters; i++)
+		dvb_module_release(priv->fe[i].demod_i2c);
+
+	return ret;
+}
+
+static struct helene_config helene_conf[] = {
+	{ .xtal = SONY_HELENE_XTAL_16000, },
+	{ .xtal = SONY_HELENE_XTAL_16000, },
+	{ .xtal = SONY_HELENE_XTAL_16000, },
+};
+
+static int uniphier_adapter_tuner_probe(struct uniphier_adapter_priv *priv)
+{
+	const struct uniphier_adapter_spec *spec = priv->spec;
+	struct device *dev = &priv->pdev->dev;
+	struct device_node *node;
+	int ret, i;
+
+	priv->tuner_gpio = devm_gpiod_get_optional(dev, "reset-tuner",
+						   GPIOD_OUT_HIGH);
+	if (IS_ERR(priv->tuner_gpio)) {
+		dev_err(dev, "Failed to request tuner_gpio: %ld\n",
+			PTR_ERR(priv->tuner_gpio));
+		return PTR_ERR(priv->tuner_gpio);
+	}
+	gpiod_set_value_cansleep(priv->tuner_gpio, 0);
+
+	node = of_parse_phandle(dev->of_node, "tuner-i2c-bus", 0);
+	if (!node) {
+		dev_err(dev, "Failed to parse tuner-i2c-bus\n");
+		return -ENODEV;
+	}
+
+	priv->tuner_i2c_adapter = of_find_i2c_adapter_by_node(node);
+	if (!priv->tuner_i2c_adapter) {
+		dev_err(dev, "Failed to find tuner i2c adapter\n");
+		of_node_put(node);
+		return -ENODEV;
+	}
+	of_node_put(node);
+
+	for (i = 0; i < priv->spec->adapters; i++) {
+		struct i2c_client *c;
+
+		helene_conf[i].fe = priv->fe[i].fe;
+
+		c = dvb_module_probe(spec->tuner_i2c_info[i].type, NULL,
+				     priv->tuner_i2c_adapter,
+				     spec->tuner_i2c_info[i].addr,
+				     &helene_conf[i]);
+		if (!c) {
+			dev_err(dev, "Failed to probe tuner\n");
+			ret = -ENODEV;
+			goto err_out;
+		}
+		priv->fe[i].tuner_i2c = c;
+	}
+
+	return 0;
+
+err_out:
+	for (i = 0; i < spec->adapters; i++)
+		dvb_module_release(priv->fe[i].tuner_i2c);
+
+	return ret;
+}
+
+static int uniphier_adapter_probe(struct platform_device *pdev)
+{
+	struct uniphier_adapter_priv *priv;
+	struct device *dev = &pdev->dev;
+	int i, ret;
+
+	priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
+	if (!priv)
+		return -ENOMEM;
+	priv->pdev = pdev;
+
+	priv->spec = of_device_get_match_data(dev);
+	if (!priv->spec)
+		return -EINVAL;
+
+	priv->fe = devm_kzalloc(dev, sizeof(*priv->fe) * priv->spec->adapters,
+				GFP_KERNEL);
+	if (!priv->fe)
+		return -ENOMEM;
+
+	ret = uniphier_adapter_demux_probe(priv);
+	if (ret)
+		return ret;
+
+	ret = uniphier_adapter_demod_probe(priv);
+	if (ret)
+		return ret;
+
+	ret = uniphier_adapter_tuner_probe(priv);
+	if (ret)
+		return ret;
+
+	platform_set_drvdata(pdev, priv);
+
+	for (i = 0; i < priv->spec->adapters; i++) {
+		priv->chip->tsif[i].fe = priv->fe[i].fe;
+
+		ret = hsc_register_dvb(&priv->chip->tsif[i]);
+		if (ret) {
+			dev_err(dev, "Failed to register adapter\n");
+			goto err_out_if;
+		}
+	}
+
+	return 0;
+
+err_out_if:
+	for (i = 0; i < priv->spec->adapters; i++)
+		hsc_unregister_dvb(&priv->chip->tsif[i]);
+
+	return ret;
+}
+
+static int uniphier_adapter_remove(struct platform_device *pdev)
+{
+	struct uniphier_adapter_priv *priv = platform_get_drvdata(pdev);
+	int i;
+
+	for (i = 0; i < priv->spec->adapters; i++) {
+		hsc_dmaif_release(&priv->chip->dmaif[i]);
+		hsc_tsif_release(&priv->chip->tsif[i]);
+		hsc_unregister_dvb(&priv->chip->tsif[i]);
+		dvb_module_release(priv->fe[i].tuner_i2c);
+		dvb_module_release(priv->fe[i].demod_i2c);
+	}
+
+	return 0;
+}
+
+static const struct hsc_conf ld20_hsc_conf[] = {
+	{
+		.css_in = HSC_CSS_IN_SRLTS2,
+		.css_out = HSC_CSS_OUT_TSI0,
+		.dpll = HSC_DPLL0,
+		.dma_out = HSC_DMA_OUT0,
+	},
+	{
+		.css_in = HSC_CSS_IN_SRLTS3,
+		.css_out = HSC_CSS_OUT_TSI1,
+		.dpll = HSC_DPLL1,
+		.dma_out = HSC_DMA_OUT1,
+	},
+};
+
+static const struct i2c_board_info mn884434_i2c_info[] = {
+	{ .type = "mn884434-0", .addr = 0x68, },
+	{ .type = "mn884434-1", .addr = 0x6a, },
+};
+
+static const struct i2c_board_info helene_i2c_info[] = {
+	{ .type = "helene", .addr = 0x60, },
+	{ .type = "helene", .addr = 0x61, },
+};
+
+static const struct uniphier_adapter_spec ld20_mn884434_helene_spec = {
+	.adapters = 2,
+	.hsc_conf = ld20_hsc_conf,
+	.demod_i2c_info = mn884434_i2c_info,
+	.tuner_i2c_info = helene_i2c_info,
+};
+
+static const struct of_device_id uniphier_hsc_adapter_of_match[] = {
+	{
+		.compatible = "socionext,uniphier-ld20-mn884434-helene",
+		.data = &ld20_mn884434_helene_spec,
+	},
+	{},
+};
+MODULE_DEVICE_TABLE(of, uniphier_hsc_adapter_of_match);
+
+static struct platform_driver uniphier_hsc_adapter_driver = {
+	.driver = {
+		.name = "uniphier-ld20-isdb",
+		.of_match_table = of_match_ptr(uniphier_hsc_adapter_of_match),
+	},
+	.probe  = uniphier_adapter_probe,
+	.remove = uniphier_adapter_remove,
+};
+module_platform_driver(uniphier_hsc_adapter_driver);
+
+MODULE_AUTHOR("Katsuhiro Suzuki <suzuki.katsuhiro@socionext.com>");
+MODULE_DESCRIPTION("UniPhier LD20 adapter driver for ISDB.");
+MODULE_LICENSE("GPL v2");
-- 
2.17.0