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 15 static 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 36 static 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 60 static 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 90 static 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 */ 96 void 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