1 /*
2 * netup-init.c
3 *
4 * NetUP Dual DVB-S2 CI driver
5 *
6 * Copyright (C) 2009 NetUP Inc.
7 * Copyright (C) 2009 Igor M. Liplianin <liplianin@netup.ru>
8 * Copyright (C) 2009 Abylay Ospan <aospan@netup.ru>
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
14 *
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 *
19 * GNU General Public License for more details.
20 */
21
22 #include "cx23885.h"
23 #include "netup-init.h"
24
i2c_av_write(struct i2c_adapter * i2c,u16 reg,u8 val)25 static void i2c_av_write(struct i2c_adapter *i2c, u16 reg, u8 val)
26 {
27 int ret;
28 u8 buf[3];
29 struct i2c_msg msg = {
30 .addr = 0x88 >> 1,
31 .flags = 0,
32 .buf = buf,
33 .len = 3
34 };
35
36 buf[0] = reg >> 8;
37 buf[1] = reg & 0xff;
38 buf[2] = val;
39
40 ret = i2c_transfer(i2c, &msg, 1);
41
42 if (ret != 1)
43 pr_err("%s: i2c write error!\n", __func__);
44 }
45
i2c_av_write4(struct i2c_adapter * i2c,u16 reg,u32 val)46 static void i2c_av_write4(struct i2c_adapter *i2c, u16 reg, u32 val)
47 {
48 int ret;
49 u8 buf[6];
50 struct i2c_msg msg = {
51 .addr = 0x88 >> 1,
52 .flags = 0,
53 .buf = buf,
54 .len = 6
55 };
56
57 buf[0] = reg >> 8;
58 buf[1] = reg & 0xff;
59 buf[2] = val & 0xff;
60 buf[3] = (val >> 8) & 0xff;
61 buf[4] = (val >> 16) & 0xff;
62 buf[5] = val >> 24;
63
64 ret = i2c_transfer(i2c, &msg, 1);
65
66 if (ret != 1)
67 pr_err("%s: i2c write error!\n", __func__);
68 }
69
i2c_av_read(struct i2c_adapter * i2c,u16 reg)70 static u8 i2c_av_read(struct i2c_adapter *i2c, u16 reg)
71 {
72 int ret;
73 u8 buf[2];
74 struct i2c_msg msg = {
75 .addr = 0x88 >> 1,
76 .flags = 0,
77 .buf = buf,
78 .len = 2
79 };
80
81 buf[0] = reg >> 8;
82 buf[1] = reg & 0xff;
83
84 ret = i2c_transfer(i2c, &msg, 1);
85
86 if (ret != 1)
87 pr_err("%s: i2c write error!\n", __func__);
88
89 msg.flags = I2C_M_RD;
90 msg.len = 1;
91
92 ret = i2c_transfer(i2c, &msg, 1);
93
94 if (ret != 1)
95 pr_err("%s: i2c read error!\n", __func__);
96
97 return buf[0];
98 }
99
i2c_av_and_or(struct i2c_adapter * i2c,u16 reg,unsigned and_mask,u8 or_value)100 static void i2c_av_and_or(struct i2c_adapter *i2c, u16 reg, unsigned and_mask,
101 u8 or_value)
102 {
103 i2c_av_write(i2c, reg, (i2c_av_read(i2c, reg) & and_mask) | or_value);
104 }
105 /* set 27MHz on AUX_CLK */
netup_initialize(struct cx23885_dev * dev)106 void netup_initialize(struct cx23885_dev *dev)
107 {
108 struct cx23885_i2c *i2c_bus = &dev->i2c_bus[2];
109 struct i2c_adapter *i2c = &i2c_bus->i2c_adap;
110
111 /* Stop microcontroller */
112 i2c_av_and_or(i2c, 0x803, ~0x10, 0x00);
113
114 /* Aux PLL frac for 27 MHz */
115 i2c_av_write4(i2c, 0x114, 0xea0eb3);
116
117 /* Aux PLL int for 27 MHz */
118 i2c_av_write4(i2c, 0x110, 0x090319);
119
120 /* start microcontroller */
121 i2c_av_and_or(i2c, 0x803, ~0x10, 0x10);
122 }
123
