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