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	[media] horus3a: Sony Horus3A DVB-S/S2 tuner driver
Add DVB-S/S2 frontend driver for Sony Horus3A (CXD2832AER) chip Signed-off-by: Kozlov Sergey <serjk@netup.ru> Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
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			@ -6601,6 +6601,15 @@ S:	Supported
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F:	Documentation/devicetree/bindings/media/renesas,vsp1.txt
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F:	drivers/media/platform/vsp1/
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MEDIA DRIVERS FOR HORUS3A
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M:	Sergey Kozlov <serjk@netup.ru>
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L:	linux-media@vger.kernel.org
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W:	http://linuxtv.org/
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W:	http://netup.tv/
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T:	git git://linuxtv.org/media_tree.git
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S:	Supported
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F:	drivers/media/dvb-frontends/horus3a*
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MEDIA INPUT INFRASTRUCTURE (V4L/DVB)
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M:	Mauro Carvalho Chehab <mchehab@osg.samsung.com>
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P:	LinuxTV.org Project
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			@ -816,6 +816,13 @@ config DVB_AF9033
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	depends on DVB_CORE && I2C
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	default m if !MEDIA_SUBDRV_AUTOSELECT
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config DVB_HORUS3A
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	tristate "Sony Horus3A tuner"
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	depends on DVB_CORE && I2C
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	default m if !MEDIA_SUBDRV_AUTOSELECT
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	help
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	  Say Y when you want to support this frontend.
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comment "Tools to develop new frontends"
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config DVB_DUMMY_FE
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			@ -118,3 +118,4 @@ obj-$(CONFIG_DVB_M88RS2000) += m88rs2000.o
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obj-$(CONFIG_DVB_AF9033) += af9033.o
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obj-$(CONFIG_DVB_AS102_FE) += as102_fe.o
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obj-$(CONFIG_DVB_TC90522) += tc90522.o
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obj-$(CONFIG_DVB_HORUS3A) += horus3a.o
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										421
									
								
								drivers/media/dvb-frontends/horus3a.c
									
									
									
									
									
										Normal file
									
								
							
							
						
						
									
										421
									
								
								drivers/media/dvb-frontends/horus3a.c
									
									
									
									
									
										Normal file
									
								
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			@ -0,0 +1,421 @@
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/*
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 * horus3a.h
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 *
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 * Sony Horus3A DVB-S/S2 tuner driver
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 *
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 * Copyright 2012 Sony Corporation
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 * Copyright (C) 2014 NetUP Inc.
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 * Copyright (C) 2014 Sergey Kozlov <serjk@netup.ru>
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 * Copyright (C) 2014 Abylay Ospan <aospan@netup.ru>
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 *
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 * This program is free software; you can redistribute it and/or modify
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 * it under the terms of the GNU General Public License as published by
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 * the Free Software Foundation; either version 2 of the License, or
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 * (at your option) any later version.
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 *
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 * This program is distributed in the hope that it will be useful,
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 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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 * GNU General Public License for more details.
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 */
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#include <linux/slab.h>
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#include <linux/module.h>
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#include <linux/dvb/frontend.h>
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#include <linux/types.h>
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#include "horus3a.h"
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#include "dvb_frontend.h"
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enum horus3a_state {
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	STATE_UNKNOWN,
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	STATE_SLEEP,
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	STATE_ACTIVE
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};
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struct horus3a_priv {
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	u32			frequency;
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	u8			i2c_address;
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	struct i2c_adapter	*i2c;
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	enum horus3a_state	state;
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	void			*set_tuner_data;
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	int			(*set_tuner)(void *, int);
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};
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static void horus3a_i2c_debug(struct horus3a_priv *priv,
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			      u8 reg, u8 write, const u8 *data, u32 len)
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{
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	dev_dbg(&priv->i2c->dev, "horus3a: I2C %s reg 0x%02x size %d\n",
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		(write == 0 ? "read" : "write"), reg, len);
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	print_hex_dump_bytes("horus3a: I2C data: ",
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		DUMP_PREFIX_OFFSET, data, len);
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}
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static int horus3a_write_regs(struct horus3a_priv *priv,
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			      u8 reg, const u8 *data, u32 len)
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{
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	int ret;
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	u8 buf[len+1];
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	struct i2c_msg msg[1] = {
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		{
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			.addr = priv->i2c_address,
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			.flags = 0,
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			.len = sizeof(buf),
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			.buf = buf,
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		}
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	};
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	horus3a_i2c_debug(priv, reg, 1, data, len);
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	buf[0] = reg;
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	memcpy(&buf[1], data, len);
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	ret = i2c_transfer(priv->i2c, msg, 1);
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	if (ret >= 0 && ret != 1)
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		ret = -EREMOTEIO;
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	if (ret < 0) {
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		dev_warn(&priv->i2c->dev,
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			"%s: i2c wr failed=%d reg=%02x len=%d\n",
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			KBUILD_MODNAME, ret, reg, len);
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		return ret;
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	}
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	return 0;
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}
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static int horus3a_write_reg(struct horus3a_priv *priv, u8 reg, u8 val)
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{
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	return horus3a_write_regs(priv, reg, &val, 1);
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}
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static int horus3a_enter_power_save(struct horus3a_priv *priv)
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{
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	u8 data[2];
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	dev_dbg(&priv->i2c->dev, "%s()\n", __func__);
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	if (priv->state == STATE_SLEEP)
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		return 0;
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	/* IQ Generator disable */
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	horus3a_write_reg(priv, 0x2a, 0x79);
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	/* MDIV_EN = 0 */
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	horus3a_write_reg(priv, 0x29, 0x70);
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	/* VCO disable preparation */
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	horus3a_write_reg(priv, 0x28, 0x3e);
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	/* VCO buffer disable */
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	horus3a_write_reg(priv, 0x2a, 0x19);
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	/* VCO calibration disable */
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	horus3a_write_reg(priv, 0x1c, 0x00);
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	/* Power save setting (xtal is not stopped) */
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	data[0] = 0xC0;
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	/* LNA is Disabled */
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	data[1] = 0xA7;
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	/* 0x11 - 0x12 */
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	horus3a_write_regs(priv, 0x11, data, sizeof(data));
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	priv->state = STATE_SLEEP;
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	return 0;
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}
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static int horus3a_leave_power_save(struct horus3a_priv *priv)
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{
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	u8 data[2];
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	dev_dbg(&priv->i2c->dev, "%s()\n", __func__);
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	if (priv->state == STATE_ACTIVE)
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		return 0;
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	/* Leave power save */
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	data[0] = 0x00;
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	/* LNA is Disabled */
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	data[1] = 0xa7;
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	/* 0x11 - 0x12 */
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	horus3a_write_regs(priv, 0x11, data, sizeof(data));
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	/* VCO buffer enable */
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	horus3a_write_reg(priv, 0x2a, 0x79);
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	/* VCO calibration enable */
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	horus3a_write_reg(priv, 0x1c, 0xc0);
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	/* MDIV_EN = 1 */
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	horus3a_write_reg(priv, 0x29, 0x71);
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	usleep_range(5000, 7000);
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	priv->state = STATE_ACTIVE;
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	return 0;
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}
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static int horus3a_init(struct dvb_frontend *fe)
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{
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	struct horus3a_priv *priv = fe->tuner_priv;
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	dev_dbg(&priv->i2c->dev, "%s()\n", __func__);
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	return 0;
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}
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static int horus3a_release(struct dvb_frontend *fe)
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{
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	struct horus3a_priv *priv = fe->tuner_priv;
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	dev_dbg(&priv->i2c->dev, "%s()\n", __func__);
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	kfree(fe->tuner_priv);
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	fe->tuner_priv = NULL;
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	return 0;
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}
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static int horus3a_sleep(struct dvb_frontend *fe)
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{
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	struct horus3a_priv *priv = fe->tuner_priv;
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	dev_dbg(&priv->i2c->dev, "%s()\n", __func__);
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	horus3a_enter_power_save(priv);
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	return 0;
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}
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static int horus3a_set_params(struct dvb_frontend *fe)
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{
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	struct dtv_frontend_properties *p = &fe->dtv_property_cache;
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	struct horus3a_priv *priv = fe->tuner_priv;
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	u32 frequency = p->frequency;
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	u32 symbol_rate = p->symbol_rate/1000;
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	u8 mixdiv = 0;
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	u8 mdiv = 0;
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	u32 ms = 0;
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	u8 f_ctl = 0;
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	u8 g_ctl = 0;
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	u8 fc_lpf = 0;
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	u8 data[5];
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	dev_dbg(&priv->i2c->dev, "%s(): frequency %dkHz symbol_rate %dksps\n",
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		__func__, frequency, symbol_rate);
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	if (priv->set_tuner)
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		priv->set_tuner(priv->set_tuner_data, 0);
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	if (priv->state == STATE_SLEEP)
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		horus3a_leave_power_save(priv);
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	/* frequency should be X MHz (X : integer) */
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	frequency = DIV_ROUND_CLOSEST(frequency, 1000) * 1000;
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	if (frequency <= 1155000) {
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		mixdiv = 4;
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		mdiv = 1;
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	} else {
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		mixdiv = 2;
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		mdiv = 0;
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	}
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	/* Assumed that fREF == 1MHz (1000kHz) */
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	ms = DIV_ROUND_CLOSEST((frequency * mixdiv) / 2, 1000);
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	if (ms > 0x7FFF) { /* 15 bit */
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		dev_err(&priv->i2c->dev, "horus3a: invalid frequency %d\n",
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			frequency);
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		return -EINVAL;
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	}
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	if (frequency < 975000) {
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		/* F_CTL=11100 G_CTL=001 */
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		f_ctl = 0x1C;
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		g_ctl = 0x01;
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	} else if (frequency < 1050000) {
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		/* F_CTL=11000 G_CTL=010 */
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		f_ctl = 0x18;
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		g_ctl = 0x02;
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	} else if (frequency < 1150000) {
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		/* F_CTL=10100 G_CTL=010 */
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		f_ctl = 0x14;
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		g_ctl = 0x02;
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	} else if (frequency < 1250000) {
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		/* F_CTL=10000 G_CTL=011 */
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		f_ctl = 0x10;
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		g_ctl = 0x03;
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	} else if (frequency < 1350000) {
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		/* F_CTL=01100 G_CTL=100 */
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		f_ctl = 0x0C;
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		g_ctl = 0x04;
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	} else if (frequency < 1450000) {
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		/* F_CTL=01010 G_CTL=100 */
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		f_ctl = 0x0A;
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		g_ctl = 0x04;
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	} else if (frequency < 1600000) {
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		/* F_CTL=00111 G_CTL=101 */
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		f_ctl = 0x07;
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		g_ctl = 0x05;
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	} else if (frequency < 1800000) {
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		/* F_CTL=00100 G_CTL=010 */
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		f_ctl = 0x04;
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		g_ctl = 0x02;
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	} else if (frequency < 2000000) {
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		/* F_CTL=00010 G_CTL=001 */
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		f_ctl = 0x02;
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		g_ctl = 0x01;
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	} else {
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		/* F_CTL=00000 G_CTL=000 */
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		f_ctl = 0x00;
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		g_ctl = 0x00;
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	}
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	/* LPF cutoff frequency setting */
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	if (p->delivery_system == SYS_DVBS) {
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		/*
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		 * rolloff = 0.35
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		 * SR <= 4.3
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		 * fc_lpf = 5
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		 * 4.3 < SR <= 10
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		 * fc_lpf = SR * (1 + rolloff) / 2 + SR / 2 =
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		 *	SR * 1.175 = SR * (47/40)
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		 * 10 < SR
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		 * fc_lpf = SR * (1 + rolloff) / 2 + 5 =
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		 *	SR * 0.675 + 5 = SR * (27/40) + 5
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		 * NOTE: The result should be round up.
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		 */
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		if (symbol_rate <= 4300)
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			fc_lpf = 5;
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		else if (symbol_rate <= 10000)
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			fc_lpf = (u8)DIV_ROUND_UP(symbol_rate * 47, 40000);
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		else
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			fc_lpf = (u8)DIV_ROUND_UP(symbol_rate * 27, 40000) + 5;
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		/* 5 <= fc_lpf <= 36 */
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		if (fc_lpf > 36)
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			fc_lpf = 36;
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	} else if (p->delivery_system == SYS_DVBS2) {
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		int rolloff;
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		switch (p->rolloff) {
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		case ROLLOFF_35:
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			rolloff = 35;
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			break;
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		case ROLLOFF_25:
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			rolloff = 25;
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			break;
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		case ROLLOFF_20:
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			rolloff = 20;
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			break;
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		case ROLLOFF_AUTO:
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			dev_err(&priv->i2c->dev,
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				"horus3a: auto roll-off is not supported\n");
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			return -EINVAL;
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		}
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		/*
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		 * SR <= 4.5:
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		 * fc_lpf = 5
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		 * 4.5 < SR <= 10:
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		 * fc_lpf = SR * (1 + rolloff) / 2 + SR / 2
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		 * 10 < SR:
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		 * fc_lpf = SR * (1 + rolloff) / 2 + 5
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		 * NOTE: The result should be round up.
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		 */
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		if (symbol_rate <= 4500)
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			fc_lpf = 5;
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		else if (symbol_rate <= 10000)
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			fc_lpf = (u8)DIV_ROUND_UP(
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		||||
				symbol_rate * (200 + rolloff), 200000);
 | 
			
		||||
		else
 | 
			
		||||
			fc_lpf = (u8)DIV_ROUND_UP(
 | 
			
		||||
				symbol_rate * (100 + rolloff), 200000) + 5;
 | 
			
		||||
		/* 5 <= fc_lpf <= 36 is valid */
 | 
			
		||||
		if (fc_lpf > 36)
 | 
			
		||||
			fc_lpf = 36;
 | 
			
		||||
	} else {
 | 
			
		||||
		dev_err(&priv->i2c->dev,
 | 
			
		||||
			"horus3a: invalid delivery system %d\n",
 | 
			
		||||
			p->delivery_system);
 | 
			
		||||
		return -EINVAL;
 | 
			
		||||
	}
 | 
			
		||||
	/* 0x00 - 0x04 */
 | 
			
		||||
	data[0] = (u8)((ms >> 7) & 0xFF);
 | 
			
		||||
	data[1] = (u8)((ms << 1) & 0xFF);
 | 
			
		||||
	data[2] = 0x00;
 | 
			
		||||
	data[3] = 0x00;
 | 
			
		||||
	data[4] = (u8)(mdiv << 7);
 | 
			
		||||
	horus3a_write_regs(priv, 0x00, data, sizeof(data));
 | 
			
		||||
	/* Write G_CTL, F_CTL */
 | 
			
		||||
	horus3a_write_reg(priv, 0x09, (u8)((g_ctl << 5) | f_ctl));
 | 
			
		||||
	/* Write LPF cutoff frequency */
 | 
			
		||||
	horus3a_write_reg(priv, 0x37, (u8)(0x80 | (fc_lpf << 1)));
 | 
			
		||||
	/* Start Calibration */
 | 
			
		||||
	horus3a_write_reg(priv, 0x05, 0x80);
 | 
			
		||||
	/* IQ Generator enable */
 | 
			
		||||
	horus3a_write_reg(priv, 0x2a, 0x7b);
 | 
			
		||||
	/* tuner stabilization time */
 | 
			
		||||
	msleep(60);
 | 
			
		||||
	/* Store tuned frequency to the struct */
 | 
			
		||||
	priv->frequency = ms * 2 * 1000 / mixdiv;
 | 
			
		||||
	return 0;
 | 
			
		||||
}
 | 
			
		||||
 | 
			
		||||
static int horus3a_get_frequency(struct dvb_frontend *fe, u32 *frequency)
 | 
			
		||||
{
 | 
			
		||||
	struct horus3a_priv *priv = fe->tuner_priv;
 | 
			
		||||
 | 
			
		||||
	*frequency = priv->frequency;
 | 
			
		||||
	return 0;
 | 
			
		||||
}
 | 
			
		||||
 | 
			
		||||
static struct dvb_tuner_ops horus3a_tuner_ops = {
 | 
			
		||||
	.info = {
 | 
			
		||||
		.name = "Sony Horus3a",
 | 
			
		||||
		.frequency_min = 950000,
 | 
			
		||||
		.frequency_max = 2150000,
 | 
			
		||||
		.frequency_step = 1000,
 | 
			
		||||
	},
 | 
			
		||||
	.init = horus3a_init,
 | 
			
		||||
	.release = horus3a_release,
 | 
			
		||||
	.sleep = horus3a_sleep,
 | 
			
		||||
	.set_params = horus3a_set_params,
 | 
			
		||||
	.get_frequency = horus3a_get_frequency,
 | 
			
		||||
};
 | 
			
		||||
 | 
			
		||||
struct dvb_frontend *horus3a_attach(struct dvb_frontend *fe,
 | 
			
		||||
				    const struct horus3a_config *config,
 | 
			
		||||
				    struct i2c_adapter *i2c)
 | 
			
		||||
{
 | 
			
		||||
	u8 buf[3], val;
 | 
			
		||||
	struct horus3a_priv *priv = NULL;
 | 
			
		||||
 | 
			
		||||
	priv = kzalloc(sizeof(struct horus3a_priv), GFP_KERNEL);
 | 
			
		||||
	if (priv == NULL)
 | 
			
		||||
		return NULL;
 | 
			
		||||
	priv->i2c_address = (config->i2c_address >> 1);
 | 
			
		||||
	priv->i2c = i2c;
 | 
			
		||||
	priv->set_tuner_data = config->set_tuner_priv;
 | 
			
		||||
	priv->set_tuner = config->set_tuner_callback;
 | 
			
		||||
 | 
			
		||||
	if (fe->ops.i2c_gate_ctrl)
 | 
			
		||||
		fe->ops.i2c_gate_ctrl(fe, 1);
 | 
			
		||||
 | 
			
		||||
	/* wait 4ms after power on */
 | 
			
		||||
	usleep_range(4000, 6000);
 | 
			
		||||
	/* IQ Generator disable */
 | 
			
		||||
	horus3a_write_reg(priv, 0x2a, 0x79);
 | 
			
		||||
	/* REF_R = Xtal Frequency */
 | 
			
		||||
	buf[0] = config->xtal_freq_mhz;
 | 
			
		||||
	buf[1] = config->xtal_freq_mhz;
 | 
			
		||||
	buf[2] = 0;
 | 
			
		||||
	/* 0x6 - 0x8 */
 | 
			
		||||
	horus3a_write_regs(priv, 0x6, buf, 3);
 | 
			
		||||
	/* IQ Out = Single Ended */
 | 
			
		||||
	horus3a_write_reg(priv, 0x0a, 0x40);
 | 
			
		||||
	switch (config->xtal_freq_mhz) {
 | 
			
		||||
	case 27:
 | 
			
		||||
		val = 0x1f;
 | 
			
		||||
		break;
 | 
			
		||||
	case 24:
 | 
			
		||||
		val = 0x10;
 | 
			
		||||
		break;
 | 
			
		||||
	case 16:
 | 
			
		||||
		val = 0xc;
 | 
			
		||||
		break;
 | 
			
		||||
	default:
 | 
			
		||||
		val = 0;
 | 
			
		||||
		dev_warn(&priv->i2c->dev,
 | 
			
		||||
			"horus3a: invalid xtal frequency %dMHz\n",
 | 
			
		||||
			config->xtal_freq_mhz);
 | 
			
		||||
		break;
 | 
			
		||||
	}
 | 
			
		||||
	val <<= 2;
 | 
			
		||||
	horus3a_write_reg(priv, 0x0e, val);
 | 
			
		||||
	horus3a_enter_power_save(priv);
 | 
			
		||||
	usleep_range(3000, 5000);
 | 
			
		||||
 | 
			
		||||
	if (fe->ops.i2c_gate_ctrl)
 | 
			
		||||
		fe->ops.i2c_gate_ctrl(fe, 0);
 | 
			
		||||
 | 
			
		||||
	memcpy(&fe->ops.tuner_ops, &horus3a_tuner_ops,
 | 
			
		||||
				sizeof(struct dvb_tuner_ops));
 | 
			
		||||
	fe->tuner_priv = priv;
 | 
			
		||||
	dev_info(&priv->i2c->dev,
 | 
			
		||||
		"Sony HORUS3A attached on addr=%x at I2C adapter %p\n",
 | 
			
		||||
		priv->i2c_address, priv->i2c);
 | 
			
		||||
	return fe;
 | 
			
		||||
}
 | 
			
		||||
EXPORT_SYMBOL(horus3a_attach);
 | 
			
		||||
 | 
			
		||||
MODULE_DESCRIPTION("Sony HORUS3A sattelite tuner driver");
 | 
			
		||||
MODULE_AUTHOR("Sergey Kozlov <serjk@netup.ru>");
 | 
			
		||||
MODULE_LICENSE("GPL");
 | 
			
		||||
							
								
								
									
										58
									
								
								drivers/media/dvb-frontends/horus3a.h
									
									
									
									
									
										Normal file
									
								
							
							
						
						
									
										58
									
								
								drivers/media/dvb-frontends/horus3a.h
									
									
									
									
									
										Normal file
									
								
							| 
						 | 
				
			
			@ -0,0 +1,58 @@
 | 
			
		|||
/*
 | 
			
		||||
 * horus3a.h
 | 
			
		||||
 *
 | 
			
		||||
 * Sony Horus3A DVB-S/S2 tuner driver
 | 
			
		||||
 *
 | 
			
		||||
 * Copyright 2012 Sony Corporation
 | 
			
		||||
 * Copyright (C) 2014 NetUP Inc.
 | 
			
		||||
 * Copyright (C) 2014 Sergey Kozlov <serjk@netup.ru>
 | 
			
		||||
 * Copyright (C) 2014 Abylay Ospan <aospan@netup.ru>
 | 
			
		||||
 *
 | 
			
		||||
 * This program is free software; you can redistribute it and/or modify
 | 
			
		||||
 * it under the terms of the GNU General Public License as published by
 | 
			
		||||
 * the Free Software Foundation; either version 2 of the License, or
 | 
			
		||||
 * (at your option) any later version.
 | 
			
		||||
 *
 | 
			
		||||
 * 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.
 | 
			
		||||
  */
 | 
			
		||||
 | 
			
		||||
#ifndef __DVB_HORUS3A_H__
 | 
			
		||||
#define __DVB_HORUS3A_H__
 | 
			
		||||
 | 
			
		||||
#include <linux/kconfig.h>
 | 
			
		||||
#include <linux/dvb/frontend.h>
 | 
			
		||||
#include <linux/i2c.h>
 | 
			
		||||
 | 
			
		||||
/**
 | 
			
		||||
 * struct horus3a_config - the configuration of Horus3A tuner driver
 | 
			
		||||
 * @i2c_address:    I2C address of the tuner
 | 
			
		||||
 * @xtal_freq_mhz:  Oscillator frequency, MHz
 | 
			
		||||
 * @set_tuner_priv: Callback function private context
 | 
			
		||||
 * @set_tuner_callback: Callback function that notifies the parent driver
 | 
			
		||||
 *          which tuner is active now
 | 
			
		||||
 */
 | 
			
		||||
struct horus3a_config {
 | 
			
		||||
	u8	i2c_address;
 | 
			
		||||
	u8	xtal_freq_mhz;
 | 
			
		||||
	void	*set_tuner_priv;
 | 
			
		||||
	int	(*set_tuner_callback)(void *, int);
 | 
			
		||||
};
 | 
			
		||||
 | 
			
		||||
#if IS_REACHABLE(CONFIG_DVB_HORUS3A)
 | 
			
		||||
extern struct dvb_frontend *horus3a_attach(struct dvb_frontend *fe,
 | 
			
		||||
					const struct horus3a_config *config,
 | 
			
		||||
					struct i2c_adapter *i2c);
 | 
			
		||||
#else
 | 
			
		||||
static inline struct dvb_frontend *horus3a_attach(
 | 
			
		||||
					const struct cxd2820r_config *config,
 | 
			
		||||
					struct i2c_adapter *i2c)
 | 
			
		||||
{
 | 
			
		||||
	printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);
 | 
			
		||||
	return NULL;
 | 
			
		||||
}
 | 
			
		||||
#endif
 | 
			
		||||
 | 
			
		||||
#endif
 | 
			
		||||
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		Reference in a new issue