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 #include "netup-init.h" 28 29 static void i2c_av_write(struct i2c_adapter *i2c, u16 reg, u8 val) 30 { 31 int ret; 32 u8 buf[3]; 33 struct i2c_msg msg = { 34 .addr = 0x88 >> 1, 35 .flags = 0, 36 .buf = buf, 37 .len = 3 38 }; 39 40 buf[0] = reg >> 8; 41 buf[1] = reg & 0xff; 42 buf[2] = val; 43 44 ret = i2c_transfer(i2c, &msg, 1); 45 46 if (ret != 1) 47 printk(KERN_ERR "%s: i2c write error!\n", __func__); 48 } 49 50 static void i2c_av_write4(struct i2c_adapter *i2c, u16 reg, u32 val) 51 { 52 int ret; 53 u8 buf[6]; 54 struct i2c_msg msg = { 55 .addr = 0x88 >> 1, 56 .flags = 0, 57 .buf = buf, 58 .len = 6 59 }; 60 61 buf[0] = reg >> 8; 62 buf[1] = reg & 0xff; 63 buf[2] = val & 0xff; 64 buf[3] = (val >> 8) & 0xff; 65 buf[4] = (val >> 16) & 0xff; 66 buf[5] = val >> 24; 67 68 ret = i2c_transfer(i2c, &msg, 1); 69 70 if (ret != 1) 71 printk(KERN_ERR "%s: i2c write error!\n", __func__); 72 } 73 74 static u8 i2c_av_read(struct i2c_adapter *i2c, u16 reg) 75 { 76 int ret; 77 u8 buf[2]; 78 struct i2c_msg msg = { 79 .addr = 0x88 >> 1, 80 .flags = 0, 81 .buf = buf, 82 .len = 2 83 }; 84 85 buf[0] = reg >> 8; 86 buf[1] = reg & 0xff; 87 88 ret = i2c_transfer(i2c, &msg, 1); 89 90 if (ret != 1) 91 printk(KERN_ERR "%s: i2c write error!\n", __func__); 92 93 msg.flags = I2C_M_RD; 94 msg.len = 1; 95 96 ret = i2c_transfer(i2c, &msg, 1); 97 98 if (ret != 1) 99 printk(KERN_ERR "%s: i2c read error!\n", __func__); 100 101 return buf[0]; 102 } 103 104 static void i2c_av_and_or(struct i2c_adapter *i2c, u16 reg, unsigned and_mask, 105 u8 or_value) 106 { 107 i2c_av_write(i2c, reg, (i2c_av_read(i2c, reg) & and_mask) | or_value); 108 } 109 /* set 27MHz on AUX_CLK */ 110 void netup_initialize(struct cx23885_dev *dev) 111 { 112 struct cx23885_i2c *i2c_bus = &dev->i2c_bus[2]; 113 struct i2c_adapter *i2c = &i2c_bus->i2c_adap; 114 115 /* Stop microcontroller */ 116 i2c_av_and_or(i2c, 0x803, ~0x10, 0x00); 117 118 /* Aux PLL frac for 27 MHz */ 119 i2c_av_write4(i2c, 0x114, 0xea0eb3); 120 121 /* Aux PLL int for 27 MHz */ 122 i2c_av_write4(i2c, 0x110, 0x090319); 123 124 /* start microcontroller */ 125 i2c_av_and_or(i2c, 0x803, ~0x10, 0x10); 126 } 127