fm.rar_FM5807在android中驱动实现_android_qn8006_totalbpr_收音机android

/******************************************************************************** Copyright (C) 2007 ROCK-CHIPS FUZHOU . All Rights Reserved. FileName: hw_fm8035.c Description: FM 收音模块 fm8035 驱动程序. ------------------------------------------------------------------------------- Created by: 李 青 Created Date: 2014-4-22 9:51 Version: 0.1 Descriptions: ------------------------------------------------------------------------------- Modified by: Created Date: Version: Descriptions: ********************************************************************************/ #define _FM8035_IN_ #include <linux/module.h> #include <linux/init.h> #include <linux/miscdevice.h> #include <linux/spi/spi.h> #include <linux/slab.h> #include <linux/fcntl.h> #include <linux/device.h> #include <linux/jiffies.h> #include <linux/ioport.h> #include <linux/input-polldev.h> #include <linux/console.h> #include <linux/fb.h> #include <mach/iomux.h> #include <linux/platform_device.h> #include <linux/power_supply.h> #include <linux/workqueue.h> #include <linux/kernel.h> #include <linux/i2c.h> #include <mach/gpio.h> #include <linux/delay.h> #include <linux/time.h> #include <linux/interrupt.h> #include <linux/irq.h> #include <mach/board.h> #include <linux/preempt.h> #include "fm8035.h" #include <linux/dma-mapping.h> #include <linux/interrupt.h> #include <linux/highmem.h> #include <linux/delay.h> #include <linux/slab.h> #include <linux/platform_device.h> #include <linux/clk.h> #include <linux/cpufreq.h> #include <mach/irqs.h> #include <linux/miscdevice.h> #include <asm/dma.h> #include <linux/preempt.h> //#include "rk29_spim.h" #include <linux/spi/spi.h> #include <mach/board.h> #if 0 #define DBG(x...) printk(KERN_INFO x) #else #define DBG(x...) #endif #define DRV_NAME "RADIO_FM8035"//"FM8035" struct fm8035_dev_s{ struct miscdevice misc_dev; struct i2c_client *client; const struct fm8035_platform_data *plat_data; unsigned short FmSearchMode; unsigned short FmSearchDirect; unsigned long FmArea; bool FmStereo; unsigned short FmState; unsigned long FmFreq; bool FmAutoSearchState; }; char qnd_div1; char qnd_div2; char qnd_nco; char qnd_IsQN8035B; char qnd_ChipID; u8 qnd_CH_STEP = 1; struct fm8035_dev_s *fm8035_reg; static struct miscdevice fm8035_dev; u8 qnd_StepTbl[3]={5,10,20}; u8 qnd_AutoScanAll = 0; u8 qnd_ChCount; u16 qnd_ChList[QN_CCA_MAX_CH]; static struct class *menual_rearch = NULL; //表示文件节点 /********************************************************************* FM 收音模块 fm8035 驱动程序 物理层 函数定义. *********************************************************************/ /********************************************************************** int QND_Delay() ********************************************************************** Description: Delay for some ms, to be customized according to user application platform Parameters: ms: ms counts Return Value: None **********************************************************************/ void QND_Delay(u8 ms) { mdelay(ms); } /* -------------------------------------------------------------------------------- Function name : fm8035_i2c_set_regs(struct i2c_client *client, u8 reg, u8 buf[], unsigned len) Author : Description : 设置rda8035 内部寄存器 Input : client -- I2C设备指针 reg -- 要设置的寄存器位 Return : History: <author> <time> <version> desc: ORG -------------------------------------------------------------------------------- */ int fm8035_i2c_set_regs(struct i2c_client *client, u16 reg, u8 val) { int err,cnt; u8 buf[2]; struct i2c_msg msg[1]; buf[0] = reg & 0xFF; buf[1] = val; msg->addr = client->addr; msg->flags = client->flags; msg->buf = buf; msg->len = sizeof(buf); msg->scl_rate = QN8035_I2C_SPEED; msg->read_type = 0; cnt = 3; err = -EAGAIN; while ((cnt-- > 0) && (err < 0)) { err = i2c_transfer(client->adapter, msg, 1); if (err >= 0) { return 0; } else { udelay(10); } } return err; } /* -------------------------------------------------------------------------------- Function name : fm8035_i2c_read_regs(struct i2c_client *client, u8 reg, u8 buf[], unsigned len) Author : Description : 读取fm8035 内部寄存器 Input : client -- I2C设备指针 reg -- 要设置的寄存器 Return : History: <author> <time> <version> desc: ORG -------------------------------------------------------------------------------- */ u8 fm8035_i2c_read_regs( struct i2c_client *client,u8 reg) { int err,cnt; u8 buf[1]; struct i2c_msg msg[2]; u8 *val; buf[0] = reg & 0xFF; msg[0].addr = client->addr; msg[0].flags = client->flags; msg[0].buf = buf; msg[0].len = sizeof(buf); msg[0].scl_rate = QN8035_I2C_SPEED; msg[0].read_type = 2; msg[1].addr = client->addr; msg[1].flags = client->flags|I2C_M_RD; msg[1].buf = buf; msg[1].len = 1; msg[1].scl_rate = QN8035_I2C_SPEED; msg[1].read_type = 2; cnt = 3; err = -EAGAIN; while ((cnt-- > 0) && (err < 0)) { err = i2c_transfer(client->adapter, msg, 2); if (err >= 0) { *val = buf[0]; return *val; } else { udelay(10); } } return err; } /* -------------------------------------------------------------------------------- Function name : fm8035_i2c_set_regs_bit(struct i2c_client *client, u16 reg, u8 bit_Mask, u8 data_val) Author : Description : 设置fm8035对应寄存器的bit_Mask位的值为data_val Input : client -- I2C设备指针 reg -- 要设置的寄存器 Return : History: <author> <time> <version> desc: ORG -------------------------------------------------------------------------------- */ int fm8035_i2c_set_regs_bit(struct i2c_client *client, u16 reg, u8 bit_Mask, u8 data_val) { u8 reg_val; int ret = 0; reg_val = fm8035_i2c_read_regs(client, reg); reg_val &= (u8)(~bit_Mask); reg_val |= data_val & bit_Mask; ret = fm8035_i2c_set_regs(client, reg, reg_val); return ret; } /********************************************************************* FM 收音模块 fm8035 驱动程序 接口函数 定义. *********************************************************************/ /********************************************************************** void QNF_RXInit() ********************************************************************** Description: set to SNR based MPX control. Call this function before tune to one specific channel Parameters: None Return Value: None **********************************************************************/ void QNF_RXInit(struct i2c_client *client) { fm8035_i2c_set_regs_bit(client,0x1b,0x08,0x00); //Let NFILT adjust freely fm8035_i2c_set_regs_bit(client,0x2c,0x3f,0x12); fm8035_i2c_set_regs_bit(client,0x1d,0x40,0x00); fm8035_i2c_set_regs_bit(client,0x41,0x0f,0x0a); fm8035_i2c_set_regs(client,0x45,0x50); fm8035_i2c_set_regs_bit(client,0x3e,0x80,0x80); fm8035_i2c_set_regs_bit(client,0x41,0xe0,0xc0); if(qnd_ChipID == CHIPSUBID_QN8035A0) { fm8035_i2c_set_regs_bit(client,0x42,0x10,0x10); } } /********************************************************************** void QNF_SetMute(u8 On)