[linux-2.6-block.git] / drivers / media / dvb-frontends / lnbp21.c

// SPDX-License-Identifier: GPL-2.0-or-later
/*
 * lnbp21.c - driver for lnb supply and control ic lnbp21
 *
 * Copyright (C) 2006, 2009 Oliver Endriss <o.endriss@gmx.de>
 * Copyright (C) 2009 Igor M. Liplianin <liplianin@netup.ru>
 *
 * the project's page is at https://linuxtv.org
 */
#include <linux/delay.h>
#include <linux/errno.h>
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/string.h>
#include <linux/slab.h>

#include <media/dvb_frontend.h>
#include "lnbp21.h"
#include "lnbh24.h"

struct lnbp21 {
	u8			config;
	u8			override_or;
	u8			override_and;
	struct i2c_adapter	*i2c;
	u8			i2c_addr;
};

static int lnbp21_set_voltage(struct dvb_frontend *fe,
			      enum fe_sec_voltage voltage)
{
	struct lnbp21 *lnbp21 = (struct lnbp21 *) fe->sec_priv;
	struct i2c_msg msg = {	.addr = lnbp21->i2c_addr, .flags = 0,
				.buf = &lnbp21->config,
				.len = sizeof(lnbp21->config) };

	lnbp21->config &= ~(LNBP21_VSEL | LNBP21_EN);

	switch(voltage) {
	case SEC_VOLTAGE_OFF:
		break;
	case SEC_VOLTAGE_13:
		lnbp21->config |= LNBP21_EN;
		break;
	case SEC_VOLTAGE_18:
		lnbp21->config |= (LNBP21_EN | LNBP21_VSEL);
		break;
	default:
		return -EINVAL;
	}

	lnbp21->config |= lnbp21->override_or;
	lnbp21->config &= lnbp21->override_and;

	return (i2c_transfer(lnbp21->i2c, &msg, 1) == 1) ? 0 : -EIO;
}

static int lnbp21_enable_high_lnb_voltage(struct dvb_frontend *fe, long arg)
{
	struct lnbp21 *lnbp21 = (struct lnbp21 *) fe->sec_priv;
	struct i2c_msg msg = {	.addr = lnbp21->i2c_addr, .flags = 0,
				.buf = &lnbp21->config,
				.len = sizeof(lnbp21->config) };

	if (arg)
		lnbp21->config |= LNBP21_LLC;
	else
		lnbp21->config &= ~LNBP21_LLC;

	lnbp21->config |= lnbp21->override_or;
	lnbp21->config &= lnbp21->override_and;

	return (i2c_transfer(lnbp21->i2c, &msg, 1) == 1) ? 0 : -EIO;
}

static int lnbp21_set_tone(struct dvb_frontend *fe,
			   enum fe_sec_tone_mode tone)
{
	struct lnbp21 *lnbp21 = (struct lnbp21 *) fe->sec_priv;
	struct i2c_msg msg = {	.addr = lnbp21->i2c_addr, .flags = 0,
				.buf = &lnbp21->config,
				.len = sizeof(lnbp21->config) };

	switch (tone) {
	case SEC_TONE_OFF:
		lnbp21->config &= ~LNBP21_TEN;
		break;
	case SEC_TONE_ON:
		lnbp21->config |= LNBP21_TEN;
		break;
	default:
		return -EINVAL;
	}

	lnbp21->config |= lnbp21->override_or;
	lnbp21->config &= lnbp21->override_and;

	return (i2c_transfer(lnbp21->i2c, &msg, 1) == 1) ? 0 : -EIO;
}

static void lnbp21_release(struct dvb_frontend *fe)
{
	/* LNBP power off */
	lnbp21_set_voltage(fe, SEC_VOLTAGE_OFF);

	/* free data */
	kfree(fe->sec_priv);
	fe->sec_priv = NULL;
}

static struct dvb_frontend *lnbx2x_attach(struct dvb_frontend *fe,
				struct i2c_adapter *i2c, u8 override_set,
				u8 override_clear, u8 i2c_addr, u8 config)
{
	struct lnbp21 *lnbp21 = kmalloc(sizeof(struct lnbp21), GFP_KERNEL);
	if (!lnbp21)
		return NULL;

	/* default configuration */
	lnbp21->config = config;
	lnbp21->i2c = i2c;
	lnbp21->i2c_addr = i2c_addr;
	fe->sec_priv = lnbp21;

	/* bits which should be forced to '1' */
	lnbp21->override_or = override_set;

	/* bits which should be forced to '0' */
	lnbp21->override_and = ~override_clear;

	/* detect if it is present or not */
	if (lnbp21_set_voltage(fe, SEC_VOLTAGE_OFF)) {
		kfree(lnbp21);
		return NULL;
	}

	/* install release callback */
	fe->ops.release_sec = lnbp21_release;

	/* override frontend ops */
	fe->ops.set_voltage = lnbp21_set_voltage;
	fe->ops.enable_high_lnb_voltage = lnbp21_enable_high_lnb_voltage;
	if (!(override_clear & LNBH24_TEN)) /*22kHz logic controlled by demod*/
		fe->ops.set_tone = lnbp21_set_tone;
	printk(KERN_INFO "LNBx2x attached on addr=%x\n", lnbp21->i2c_addr);

	return fe;
}

struct dvb_frontend *lnbh24_attach(struct dvb_frontend *fe,
				struct i2c_adapter *i2c, u8 override_set,
				u8 override_clear, u8 i2c_addr)
{
	return lnbx2x_attach(fe, i2c, override_set, override_clear,
							i2c_addr, LNBH24_TTX);
}
EXPORT_SYMBOL(lnbh24_attach);

struct dvb_frontend *lnbp21_attach(struct dvb_frontend *fe,
				struct i2c_adapter *i2c, u8 override_set,
				u8 override_clear)
{
	return lnbx2x_attach(fe, i2c, override_set, override_clear,
							0x08, LNBP21_ISEL);
}
EXPORT_SYMBOL(lnbp21_attach);

MODULE_DESCRIPTION("Driver for lnb supply and control ic lnbp21, lnbh24");
MODULE_AUTHOR("Oliver Endriss, Igor M. Liplianin");
MODULE_LICENSE("GPL");
Commit	Line	Data
a0c7056f	1	// SPDX-License-Identifier: GPL-2.0-or-later
d020542f	2	/*
8c1a2331	3	* lnbp21.c - driver for lnb supply and control ic lnbp21
d020542f	4	*
9efc1bdd	5	* Copyright (C) 2006, 2009 Oliver Endriss <o.endriss@gmx.de>
8c1a2331	6	* Copyright (C) 2009 Igor M. Liplianin <liplianin@netup.ru>
d020542f	7	*
991ce92f	8	* the project's page is at https://linuxtv.org
d020542f AQ	9	*/
	10	#include <linux/delay.h>
	11	#include <linux/errno.h>
	12	#include <linux/init.h>
	13	#include <linux/kernel.h>
	14	#include <linux/module.h>
d020542f AQ	15	#include <linux/string.h>
	16	#include <linux/slab.h>
	17
fada1935	18	#include <media/dvb_frontend.h>
d020542f	19	#include "lnbp21.h"
8c1a2331	20	#include "lnbh24.h"
d020542f AQ	21
	22	struct lnbp21 {
	23	u8 config;
	24	u8 override_or;
	25	u8 override_and;
	26	struct i2c_adapter *i2c;
8c1a2331	27	u8 i2c_addr;
d020542f AQ	28	};
d020542f AQ	29
8c1a2331	30	static int lnbp21_set_voltage(struct dvb_frontend *fe,
0df289a2	31	enum fe_sec_voltage voltage)
d020542f	32	{
13fef933	33	struct lnbp21 lnbp21 = (struct lnbp21 ) fe->sec_priv;
8c1a2331	34	struct i2c_msg msg = { .addr = lnbp21->i2c_addr, .flags = 0,
d020542f AQ	35	.buf = &lnbp21->config,
	36	.len = sizeof(lnbp21->config) };
	37
	38	lnbp21->config &= ~(LNBP21_VSEL \| LNBP21_EN);
	39
	40	switch(voltage) {
	41	case SEC_VOLTAGE_OFF:
	42	break;
	43	case SEC_VOLTAGE_13:
	44	lnbp21->config \|= LNBP21_EN;
	45	break;
	46	case SEC_VOLTAGE_18:
	47	lnbp21->config \|= (LNBP21_EN \| LNBP21_VSEL);
	48	break;
	49	default:
	50	return -EINVAL;
c2c1b415	51	}
d020542f AQ	52
	53	lnbp21->config \|= lnbp21->override_or;
	54	lnbp21->config &= lnbp21->override_and;
	55
	56	return (i2c_transfer(lnbp21->i2c, &msg, 1) == 1) ? 0 : -EIO;
	57	}
	58
	59	static int lnbp21_enable_high_lnb_voltage(struct dvb_frontend *fe, long arg)
	60	{
13fef933	61	struct lnbp21 lnbp21 = (struct lnbp21 ) fe->sec_priv;
8c1a2331	62	struct i2c_msg msg = { .addr = lnbp21->i2c_addr, .flags = 0,
d020542f AQ	63	.buf = &lnbp21->config,
	64	.len = sizeof(lnbp21->config) };
	65
	66	if (arg)
	67	lnbp21->config \|= LNBP21_LLC;
	68	else
	69	lnbp21->config &= ~LNBP21_LLC;
	70
	71	lnbp21->config \|= lnbp21->override_or;
	72	lnbp21->config &= lnbp21->override_and;
	73
	74	return (i2c_transfer(lnbp21->i2c, &msg, 1) == 1) ? 0 : -EIO;
	75	}
	76
9efc1bdd	77	static int lnbp21_set_tone(struct dvb_frontend *fe,
0df289a2	78	enum fe_sec_tone_mode tone)
9efc1bdd OE	79	{
	80	struct lnbp21 lnbp21 = (struct lnbp21 ) fe->sec_priv;
	81	struct i2c_msg msg = { .addr = lnbp21->i2c_addr, .flags = 0,
	82	.buf = &lnbp21->config,
	83	.len = sizeof(lnbp21->config) };
	84
	85	switch (tone) {
	86	case SEC_TONE_OFF:
	87	lnbp21->config &= ~LNBP21_TEN;
	88	break;
	89	case SEC_TONE_ON:
	90	lnbp21->config \|= LNBP21_TEN;
	91	break;
	92	default:
	93	return -EINVAL;
c2c1b415	94	}
9efc1bdd OE	95
	96	lnbp21->config \|= lnbp21->override_or;
	97	lnbp21->config &= lnbp21->override_and;
	98
	99	return (i2c_transfer(lnbp21->i2c, &msg, 1) == 1) ? 0 : -EIO;
	100	}
	101
d020542f AQ	102	static void lnbp21_release(struct dvb_frontend *fe)
d020542f AQ	103	{
d020542f AQ	104	/* LNBP power off */
	105	lnbp21_set_voltage(fe, SEC_VOLTAGE_OFF);
	106
13fef933 AQ	107	/* free data */
	108	kfree(fe->sec_priv);
	109	fe->sec_priv = NULL;
d020542f AQ	110	}
d020542f AQ	111
8c1a2331 IL	112	static struct dvb_frontend lnbx2x_attach(struct dvb_frontend fe,
	113	struct i2c_adapter *i2c, u8 override_set,
	114	u8 override_clear, u8 i2c_addr, u8 config)
d020542f AQ	115	{
	116	struct lnbp21 *lnbp21 = kmalloc(sizeof(struct lnbp21), GFP_KERNEL);
	117	if (!lnbp21)
13fef933	118	return NULL;
d020542f AQ	119
d020542f AQ	120	/* default configuration */
8c1a2331	121	lnbp21->config = config;
d020542f	122	lnbp21->i2c = i2c;
8c1a2331	123	lnbp21->i2c_addr = i2c_addr;
13fef933	124	fe->sec_priv = lnbp21;
d020542f AQ	125
	126	/* bits which should be forced to '1' */
	127	lnbp21->override_or = override_set;
	128
	129	/* bits which should be forced to '0' */
	130	lnbp21->override_and = ~override_clear;
	131
	132	/* detect if it is present or not */
	133	if (lnbp21_set_voltage(fe, SEC_VOLTAGE_OFF)) {
	134	kfree(lnbp21);
13fef933	135	return NULL;
d020542f AQ	136	}
	137
	138	/* install release callback */
b5b168d7	139	fe->ops.release_sec = lnbp21_release;
d020542f AQ	140
d020542f AQ	141	/* override frontend ops */
dea74869 PB	142	fe->ops.set_voltage = lnbp21_set_voltage;
dea74869 PB	143	fe->ops.enable_high_lnb_voltage = lnbp21_enable_high_lnb_voltage;
0726681a	144	if (!(override_clear & LNBH24_TEN)) /22kHz logic controlled by demod/
ceb59cf0	145	fe->ops.set_tone = lnbp21_set_tone;
3cd5270c	146	printk(KERN_INFO "LNBx2x attached on addr=%x\n", lnbp21->i2c_addr);
d020542f	147
13fef933	148	return fe;
d020542f	149	}
8c1a2331	150
55d5834d	151	struct dvb_frontend lnbh24_attach(struct dvb_frontend fe,
8c1a2331 IL	152	struct i2c_adapter *i2c, u8 override_set,
	153	u8 override_clear, u8 i2c_addr)
	154	{
	155	return lnbx2x_attach(fe, i2c, override_set, override_clear,
	156	i2c_addr, LNBH24_TTX);
	157	}
	158	EXPORT_SYMBOL(lnbh24_attach);
	159
	160	struct dvb_frontend lnbp21_attach(struct dvb_frontend fe,
	161	struct i2c_adapter *i2c, u8 override_set,
	162	u8 override_clear)
	163	{
	164	return lnbx2x_attach(fe, i2c, override_set, override_clear,
	165	0x08, LNBP21_ISEL);
	166	}
d020542f AQ	167	EXPORT_SYMBOL(lnbp21_attach);
d020542f AQ	168
8c1a2331 IL	169	MODULE_DESCRIPTION("Driver for lnb supply and control ic lnbp21, lnbh24");
8c1a2331 IL	170	MODULE_AUTHOR("Oliver Endriss, Igor M. Liplianin");
d020542f	171	MODULE_LICENSE("GPL");