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 * You should have received a copy of the GNU General Public License
22 * along with this program; if not, write to the Free Software
23 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
24 */
25
26 #include "cx23885.h"
27
i2c_av_write(struct i2c_adapter * i2c,u16 reg,u8 val)28 static void i2c_av_write(struct i2c_adapter *i2c, u16 reg, u8 val)
29 {
30 int ret;
31 u8 buf[3];
32 struct i2c_msg msg = {
33 .addr = 0x88 >> 1,
34 .flags = 0,
35 .buf = buf,
36 .len = 3
37 };
38
39 buf[0] = reg >> 8;
40 buf[1] = reg & 0xff;
41 buf[2] = val;
42
43 ret = i2c_transfer(i2c, &msg, 1);
44
45 if (ret != 1)
46 printk(KERN_ERR "%s: i2c write error!\n", __func__);
47 }
48
i2c_av_write4(struct i2c_adapter * i2c,u16 reg,u32 val)49 static void i2c_av_write4(struct i2c_adapter *i2c, u16 reg, u32 val)
50 {
51 int ret;
52 u8 buf[6];
53 struct i2c_msg msg = {
54 .addr = 0x88 >> 1,
55 .flags = 0,
56 .buf = buf,
57 .len = 6
58 };
59
60 buf[0] = reg >> 8;
61 buf[1] = reg & 0xff;
62 buf[2] = val & 0xff;
63 buf[3] = (val >> 8) & 0xff;
64 buf[4] = (val >> 16) & 0xff;
65 buf[5] = val >> 24;
66
67 ret = i2c_transfer(i2c, &msg, 1);
68
69 if (ret != 1)
70 printk(KERN_ERR "%s: i2c write error!\n", __func__);
71 }
72
i2c_av_read(struct i2c_adapter * i2c,u16 reg)73 static u8 i2c_av_read(struct i2c_adapter *i2c, u16 reg)
74 {
75 int ret;
76 u8 buf[2];
77 struct i2c_msg msg = {
78 .addr = 0x88 >> 1,
79 .flags = 0,
80 .buf = buf,
81 .len = 2
82 };
83
84 buf[0] = reg >> 8;
85 buf[1] = reg & 0xff;
86
87 ret = i2c_transfer(i2c, &msg, 1);
88
89 if (ret != 1)
90 printk(KERN_ERR "%s: i2c write error!\n", __func__);
91
92 msg.flags = I2C_M_RD;
93 msg.len = 1;
94
95 ret = i2c_transfer(i2c, &msg, 1);
96
97 if (ret != 1)
98 printk(KERN_ERR "%s: i2c read error!\n", __func__);
99
100 return buf[0];
101 }
102
i2c_av_and_or(struct i2c_adapter * i2c,u16 reg,unsigned and_mask,u8 or_value)103 static void i2c_av_and_or(struct i2c_adapter *i2c, u16 reg, unsigned and_mask,
104 u8 or_value)
105 {
106 i2c_av_write(i2c, reg, (i2c_av_read(i2c, reg) & and_mask) | or_value);
107 }
108 /* set 27MHz on AUX_CLK */
netup_initialize(struct cx23885_dev * dev)109 void netup_initialize(struct cx23885_dev *dev)
110 {
111 struct cx23885_i2c *i2c_bus = &dev->i2c_bus[2];
112 struct i2c_adapter *i2c = &i2c_bus->i2c_adap;
113
114 /* Stop microcontroller */
115 i2c_av_and_or(i2c, 0x803, ~0x10, 0x00);
116
117 /* Aux PLL frac for 27 MHz */
118 i2c_av_write4(i2c, 0x114, 0xea0eb3);
119
120 /* Aux PLL int for 27 MHz */
121 i2c_av_write4(i2c, 0x110, 0x090319);
122
123 /* start microcontroller */
124 i2c_av_and_or(i2c, 0x803, ~0x10, 0x10);
125 }
126