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 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 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 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 } 99 100 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 */ 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