1// SPDX-License-Identifier: GPL-2.0-or-later
2/*
3 * netup-init.c
4 *
5 * NetUP Dual DVB-S2 CI driver
6 *
7 * Copyright (C) 2009 NetUP Inc.
8 * Copyright (C) 2009 Igor M. Liplianin <liplianin@netup.ru>
9 * Copyright (C) 2009 Abylay Ospan <aospan@netup.ru>
10 */
11
12#include "cx23885.h"
13#include "netup-init.h"
14
15static void i2c_av_write(struct i2c_adapter *i2c, u16 reg, u8 val)
16{
17	int ret;
18	u8 buf[3];
19	struct i2c_msg msg = {
20		.addr	= 0x88 >> 1,
21		.flags	= 0,
22		.buf	= buf,
23		.len	= 3
24	};
25
26	buf[0] = reg >> 8;
27	buf[1] = reg & 0xff;
28	buf[2] = val;
29
30	ret = i2c_transfer(i2c, &msg, 1);
31
32	if (ret != 1)
33		pr_err("%s: i2c write error!\n", __func__);
34}
35
36static void i2c_av_write4(struct i2c_adapter *i2c, u16 reg, u32 val)
37{
38	int ret;
39	u8 buf[6];
40	struct i2c_msg msg = {
41		.addr	= 0x88 >> 1,
42		.flags	= 0,
43		.buf	= buf,
44		.len	= 6
45	};
46
47	buf[0] = reg >> 8;
48	buf[1] = reg & 0xff;
49	buf[2] = val & 0xff;
50	buf[3] = (val >> 8) & 0xff;
51	buf[4] = (val >> 16) & 0xff;
52	buf[5] = val >> 24;
53
54	ret = i2c_transfer(i2c, &msg, 1);
55
56	if (ret != 1)
57		pr_err("%s: i2c write error!\n", __func__);
58}
59
60static u8 i2c_av_read(struct i2c_adapter *i2c, u16 reg)
61{
62	int ret;
63	u8 buf[2];
64	struct i2c_msg msg = {
65		.addr	= 0x88 >> 1,
66		.flags	= 0,
67		.buf	= buf,
68		.len	= 2
69	};
70
71	buf[0] = reg >> 8;
72	buf[1] = reg & 0xff;
73
74	ret = i2c_transfer(i2c, &msg, 1);
75
76	if (ret != 1)
77		pr_err("%s: i2c write error!\n", __func__);
78
79	msg.flags = I2C_M_RD;
80	msg.len = 1;
81
82	ret = i2c_transfer(i2c, &msg, 1);
83
84	if (ret != 1)
85		pr_err("%s: i2c read error!\n", __func__);
86
87	return buf[0];
88}
89
90static void i2c_av_and_or(struct i2c_adapter *i2c, u16 reg, unsigned and_mask,
91								u8 or_value)
92{
93	i2c_av_write(i2c, reg, (i2c_av_read(i2c, reg) & and_mask) | or_value);
94}
95/* set 27MHz on AUX_CLK */
96void netup_initialize(struct cx23885_dev *dev)
97{
98	struct cx23885_i2c *i2c_bus = &dev->i2c_bus[2];
99	struct i2c_adapter *i2c = &i2c_bus->i2c_adap;
100
101	/* Stop microcontroller */
102	i2c_av_and_or(i2c, 0x803, ~0x10, 0x00);
103
104	/* Aux PLL frac for 27 MHz */
105	i2c_av_write4(i2c, 0x114, 0xea0eb3);
106
107	/* Aux PLL int for 27 MHz */
108	i2c_av_write4(i2c, 0x110, 0x090319);
109
110	/* start microcontroller */
111	i2c_av_and_or(i2c, 0x803, ~0x10, 0x10);
112}
113