平台信息:
内核：linux3.0.68
系统：android/android6.0
平台：RK3288
作者:庄泽斌(欢迎转载，请注明作者)
邮箱：2760715357@qq.com
说明:通过I2C总线获取摄像头的ID号。
二、通过应用层I2C获取摄像头的总线编程模型Sensor ID.详细代码如下：
camera.cpp
1 #include 2 #include 3 #include 4 #include 5 #include 6 #include /* Definition of AT_* constants */ 7 #include 8 9 #include 10 #include 11 #include 12 #include 13 #include 14 #include 15 #include 16 #include 17 #include 18 #include 19 20 #include 21 #include 22 #include 23 #include 24 #include 25 //#include 26 #include 27 #include 28 #include 29 #include 30 #include 31 #include 32 #include 33 //#include 34 //#include "ion.h" 35 #include "../../system/core/libion/kernel-headers/linux/rockchip_ion.h" 36 //#include 37 #include 38 #include 39 #include 40 41 #include "camsys_head.h" 42 43 #define CAMSYS_DEVNAME "/dev/camsys_marvin" 44 45 46 47 static int camsys_fd = -1; 48 49 //hkw add; 50 int extdev_register() 51 { 52 int err = 0; 53 int numLane = 2; 54 camsys_devio_name_t extdev; 55 56 extdev.dev_id = CAMSYS_DEVID_SENSOR_1B; 57 strlcpy((char*)extdev.avdd.name, "NC",sizeof(extdev.avdd.name)); 58 extdev.avdd.min_uv = 0; 59 extdev.avdd.max_uv = 0; 60 strlcpy((char*)extdev.dovdd.name,"NC",sizeof(extdev.dovdd.name)); 61 extdev.dovdd.min_uv = 18000000; 62 extdev.dovdd.max_uv = 18000000; 63 strlcpy((char*)extdev.dvdd.name, "NC",sizeof(extdev.dvdd.name)); 64 strlcpy((char*)extdev.afvdd.name, "NC",sizeof(extdev.afvdd.name)); 65 strlcpy((char*)extdev.pwrdn.name, "RK30_PIN2_PB7",sizeof(extdev.pwrdn.name)); 66 extdev.pwrdn.active = 0x00; 67 strlcpy((char*)extdev.pwren.name, "RK30_PIN0_PC1",sizeof(extdev.pwren.name)); 68 extdev.pwren.active = 0x01; 69 strlcpy((char*)extdev.rst.name,"RK30_PIN2_PB5",sizeof(extdev.rst.name)); 70 extdev.rst.active = 0x0; 71 strlcpy((char*)extdev.afpwrdn.name,"NC",sizeof(extdev.afpwrdn.name)); 72 strlcpy((char*)extdev.afpwr.name,"NC",sizeof(extdev.afpwr.name)); 73 extdev.phy.type = CamSys_Phy_Mipi; 74 //extdev.phy.info.mipi.phy_index = 1; //MIPI_PHY_INDEX; 75 extdev.phy.info.mipi.data_en_bit = 0x01; //? 76 77 /*if (numLane == 1) { 78 extdev.phy.info.mipi.data_en_bit = 0x01; 79 extdev.phy.info.mipi.bit_rate = 656; 80 } else if (numLane == 2) { 81 extdev.phy.info.mipi.data_en_bit = 0x03; 82 extdev.phy.info.mipi.bit_rate = 328; 83 } else if (numLane == 4) { 84 extdev.phy.info.mipi.data_en_bit = 0x0f; 85 extdev.phy.info.mipi.bit_rate = 408; 86 }*/ 87 extdev.clk.in_rate = 24000000; 88 89 printf("----CAMSYS_REGISTER_DEVIO----\n"); 90 err = ioctl(camsys_fd, CAMSYS_REGISTER_DEVIO, &extdev); 91 if (err<0) { 92 printf("CAMSYS_REGISTER_DEVIO failed\n"); 93 } 94 95 return err; 96 } 97 98 //int extdev_init(unsigned int *i2cbase) 99 int extdev_init() 100 { 101 int err,i2cbytes,i; 102 struct rk_sensor_reg *sensor_reg; 103 unsigned char *i2cchar; 104 camsys_sysctrl_t sysctl; 105 camsys_i2c_info_t i2cinfo; 106 int id = 0; 107 108 sysctl.dev_mask = (CAMSYS_DEVID_SENSOR_1B & HAL_DEVID_EXTERNAL); 109 sysctl.ops = CamSys_Avdd; 110 sysctl.on = 1; 111 err = ioctl(camsys_fd, CAMSYS_SYSCTRL, &sysctl); 112 if (err<0) { 113 printf("CamSys_Avdd on failed!"); 114 } 115 116 sysct.ops = CamSys_Dvdd;
117 sysctl.on = 1;
118 err = ioctl(camsys_fd, CAMSYS_SYSCTRL, &sysctl);
119 if (err<0) {
120 printf("CamSys_Dvdd on failed!\n");
121 }
122
123 sysctl.ops = CamSys_Dovdd;
124 sysctl.on = 1;
125 err = ioctl(camsys_fd, CAMSYS_SYSCTRL, &sysctl);
126 if (err<0) {
127 printf("CamSys_Dovdd on failed!");
128 }
129 usleep(5000);
130
131 sysctl.dev_mask = (CAMSYS_DEVID_SENSOR_1B | CAMSYS_DEVID_MARVIN);
132 sysctl.ops = CamSys_ClkIn;
133 sysctl.on = 1;
134 err = ioctl(camsys_fd, CAMSYS_SYSCTRL, &sysctl);
135 if (err<0) {
136 printf("CamSys_ClkIn on failed\n");
137 }
138
139 //1)power en
140 usleep(1000);
141 sysctl.dev_mask = (CAMSYS_DEVID_SENSOR_1B & HAL_DEVID_EXTERNAL);
142 sysctl.ops = CamSys_PwrEn;
143 sysctl.on = 1;
144 err = ioctl(camsys_fd, CAMSYS_SYSCTRL, &sysctl);
145 if (err<0) {
146 printf("CamSys_PwrEn on failed");
147 }
148
149 //2)reset
150 usleep(1000);
151 sysctl.ops = CamSys_Rst;
152 sysctl.on = 0;
153 err = ioctl(camsys_fd, CAMSYS_SYSCTRL, &sysctl);
154 if (err<0) {
155 printf("CamSys_Rst on failed\n");
156 }
157
158 //3)power down control
159 usleep(1000);
160 //sysctl.dev_mask = CAMSYS_DEVID_SENSOR_1B;
161 sysctl.ops = CamSys_PwrDn;
162 sysctl.on = 0;
163 err = ioctl(camsys_fd, CAMSYS_SYSCTRL, &sysctl);
164 if (err<0) {
165 printf("CamSys_PwrDn on failed");
166 }
167 usleep(2000);
168
169 i2cinfo.bus_num = 3;
170 i2cinfo.slave_addr = 0x6C; //0x6c; //0x20;
171 i2cinfo.reg_addr = 0x0103;
172 i2cinfo.reg_size = 2;
173 i2cinfo.val = 0x01;
174 i2cinfo.val_size = 0x01;
175 i2cinfo.i2cbuf_directly = 0;
176 i2cinfo.speed = 100000;
177
178 err = ioctl(camsys_fd, CAMSYS_I2CWR, &i2cinfo);
179 if(err<0) {
180 printf("softreset::CAMSYS_I2CWR failed\n");
181 i2cinfo.slave_addr = 0x20;
182 err = ioctl(camsys_fd, CAMSYS_I2CWR, &i2cinfo);
183 if(err<0){
184 printf("softreset again::CAMSYS_I2CWR failed\n");
185 printf("zhuang:{ ID:0x%x }\n",id);
186 goto end;
187 }
188 }/* else {
189 printf("I2c write: 0x%x : 0x%x\n",i2cinfo.reg_addr,i2cinfo.val);
190 }*/
191
192 usleep(5000);
193
194 i2cinfo.reg_addr = 0x300a;
195 i2cinfo.val_size = 0x01;
196 err = ioctl(camsys_fd, CAMSYS_I2CRD, &i2cinfo);
197 if (err<0) {
198 printf("CAMSYS_I2CRD failed\n");
199 printf("zhuang:{ ID:0x%x }\n",id);
200 goto end;
201 } else {
202 printf("I2c read: 0x%x : 0x%x\n",i2cinfo.reg_addr,i2cinfo.val);
203 id = (i2cinfo.val<<8);
204 }
205
206 i2cinfo.reg_addr = 0x300b;
207 err = ioctl(camsys_fd, CAMSYS_I2CRD, &i2cinfo);
208 if (err<0) {
209 printf("CAMSYS_I2CRD failed\n");
210 printf("{ ID:0x%x }\n",id);
211 goto end;
212 } else {
213 printf("I2c read: 0x%x : 0x%x\n",i2cinfo.reg_addr,i2cinfo.val);
214 id |= i2cinfo.val;
215 }
216
217 i2cinfo.reg_addr = 0x3011;
218 err = ioctl(camsys_fd, CAMSYS_I2CRD, &i2cinfo);
219 if (err<0) {
220 printf("CAMSYS_I2CRD failed\n");
221 printf("{ ID:0x%x }\n",id);
222 goto end;
223 } else {
224 printf("IO Streng I2c read: 0x%x : 0x%x\n",i2cinfo.reg_addr,i2cinfo.val);
225 }
226 fprintf(stderr,"zhuang-cam:0x%x\r\n",id);
227 printf("\n!!!!!!!!!!Back Camera ID: 0x%x; default:0x008858!!!!!!!!!!\n",id);
228 if(id == 0x5648){
229 printf("{ ID:0x%x }\n",id);
230 }else{
231 printf("{ ID:0x%x }\n",id);
232 }
233 /*
234 i2cinfo.reg_addr = 0x300c;
235 err = ioctl(camsys_fd, CAMSYS_I2CRD, &i2cinfo);
236 if (err<0) {
237 printf("CAMSYS_I2CRD failed\n");
238 } else {
239 printf("I2c read: 0x%x : 0x%x\n",i2cinfo.reg_addr,i2cinfo.val);
240 }
241
242 i2cinfo.reg_addr = 0x302a;
243 err = ioctl(camsys_fd, CAMSYS_I2CRD, &i2cinfo);
244 if (err<0) {
245 printf("CAMSYS_I2CRD failed\n");
246 } else {
247 printf("I2c read: 0x%x : 0x%x\n",i2cinfo.reg_addr,i2cinfo.val);
248 }
249 */
250 /*
251 i2cchar = (unsigned char*)i2cbase;
252 sensor_reg = sensor_test;
253 i2cbytes = 0x00;
254 for (i=0; ireg&0xff00)>>8;
256 *i2cchar++ = (sensor_reg->reg&0xff);
257 *i2cchar++ = (sensor_reg->val&0xff);
258 sensor_reg++;
259 i2cbytes += 3;
260 }
261
262 i2cinfo.bus_num = 3;
263 i2cinfo.slave_addr = 0x6c;
264 i2cinfo.i2cbuf_directly = 1;
265 i2cinfo.i2cbuf_bytes = ((3<<16)|i2cbytes);
266 i2cinfo.speed = 100000;
267 err = ioctl(camsys_fd, CAMSYS_I2CWR, &i2cinfo);
268 if (err<0) {
269 printf("CAMSYS_I2CWR buf failed\n");
270 }
271 printf("Sensor init!\n");
272 */
273 end:
274 return 0;
275 }
276
277
278 int main(int argc,char **argv)
279 {
280 int ret = -1;
281 camsys_devio_name_t extdev;
282 camsys_i2c_info_t i2cinfo;
283 int id = 0;
284
285 ret = access(CAMSYS_DEVNAME,O_RDWR);
286 if(ret < 0){
287 printf("access %s failed\r\n",CAMSYS_DEVNAME);
288 return -1;
289 }
290
291 camsys_fd = open(CAMSYS_DEVNAME,O_RDWR);
292 if(camsys_fd < 0){
293 printf("open %s failed\r\n",CAMSYS_DEVNAME);
294 return -1;
295 }
296
297 extdev_register();
298 extdev_init();
299
300 if(camsys_fd > 0)
301 close(camsys_fd);
302
303
304 printf("camera:id = 0x%x\r\n",id);
305
306
307 return 0;
308 }
camera_head.h代码如下:
#ifndef __RKCAMSYS_HEAR_H__
#define __RKCAMSYS_HEAR_H__
#include
/*
* C A M S Y S H E A D F I L E V E R S I O N
*
*v0.0.1:
* 1) test version;
*v0.0.2:
* 1) modify camsys_irqcnnt_t;
*v0.0.3:
* 1) add support cif phy for marvin;
*v0.0.4:
* 1) add clock information in struct camsys_devio_name_s;
*v0.0.5:
* 1) add pwren control
*v0.6.0:
* 1) add support mipi phy configuration;
* 2) add support io domain and mclk driver strength configuration;
*v0.7.0:
1) add flash_trigger_out control
*v0.8.0:
1) support isp iommu
*v0.9.0:
1) add dev_name in struct camsys_devio_name_s;
*v0.a.0:
1) support external flash IC
*v0.b.0:
1) add CamSys_SensorBit0_CifBit4 in enum camsys_cifio_e.
2) support sensor powerup sequence configurable.
*/
#define CAMSYS_HEAD_VERSION KERNEL_VERSION(0,0xb,0)
#define CAMSYS_MARVIN_DEVNAME "camsys_marvin"
#define CAMSYS_CIF0_DEVNAME "camsys_cif0"
#define CAMSYS_CIF1_DEVNAME "camsys_cif1"
#define CAMSYS_NAME_LEN 32
#define CAMSYS_DEVID_MARVIN 0x00000001
#define CAMSYS_DEVID_CIF_0 0x00000002
#define CAMSYS_DEVID_CIF_1 0x00000004
#define CAMSYS_DEVID_INTERNAL 0x000000FF
#define CAMSYS_DEVID_SENSOR_1A 0x01000000
#define CAMSYS_DEVID_SENSOR_1B 0x02000000
#define CAMSYS_DEVID_SENSOR_2 0x04000000
#define CAMSYS_DEVID_EXTERNAL 0xFF000000
#define CAMSYS_DEVID_EXTERNAL_NUM 8
#define CAMSYS_DEVCFG_FLASHLIGHT 0x00000001
#define CAMSYS_DEVCFG_PREFLASHLIGHT 0x00000002
#define CAMSYS_DEVCFG_SHUTTER 0x00000004
//Sensor power up sequence define
//type: bit0-bit4
#define SENSOR_PWRSEQ_BEGIN 0x00
#define SENSOR_PWRSEQ_AVDD 0x01
#define SENSOR_PWRSEQ_DOVDD 0x02
#define SENSOR_PWRSEQ_DVDD 0x03
#define SENSOR_PWRSEQ_CLKIN 0x04
#define SENSOR_PWRSEQ_PWR 0x05
#define SENSOR_PWRSEQ_RST 0x06
#define SENSOR_PWRSEQ_PWRDN 0x07
#define SENSOR_PWRSEQ_END 0x0F
#define SENSOR_PWRSEQ_CNT 0x07
#define VCM_PWRSEQ_BEGIN 0x00
#define VCM_PWRSEQ_VDD 0x01
#define VCM_PWRSEQ_PWR 0x02
#define VCM_PWRSEQ_PWRDN 0x03
#define VCM_PWRSEQ_END 0x0F
#define VCM_PWRSEQ_CNT 0x03
#define POWERSEQ_SET(type,idx) (type<<(idx*4))
#define POWERSEQ_GET(seq,idx) ((seq>>(idx*4))&0x0f)
typedef struct camsys_irqsta_s {
unsigned int ris; //Raw interrupt status
unsigned int mis; //Masked interrupt status
} camsys_irqsta_t;
typedef struct camsys_irqcnnt_s {
int pid;
unsigned int timeout; //us
unsigned int mis;
unsigned int icr;
} camsys_irqcnnt_t;
typedef enum camsys_mmap_type_e { //this type can be filled in mmap offset argument
CamSys_Mmap_RegisterMem,
CamSys_Mmap_I2cMem,
CamSys_Mmap_End
} camsys_mmap_type_t;
typedef struct camsys_querymem_s {
camsys_mmap_type_t mem_type;
unsigned long mem_offset;
unsigned int mem_size;
} camsys_querymem_t;
typedef struct camsys_i2c_info_s {
unsigned char bus_num;
unsigned short slave_addr;
unsigned int reg_addr; //i2c device register address
unsigned int reg_size; //register address size
unsigned int val;
unsigned int val_size; //register value size
unsigned int i2cbuf_directly;
unsigned int i2cbuf_bytes;
unsigned int speed; //100000 == 100KHz
} camsys_i2c_info_t;
typedef struct camsys_reginfo_s {
unsigned int dev_mask;
unsigned int reg_offset;
unsigned int val;
} camsys_reginfo_t;
typedef enum camsys_sysctrl_ops_e {
CamSys_Vdd_Start_Tag,
CamSys_Avdd,
CamSys_Dovdd,
CamSys_Dvdd,
CamSys_Afvdd,
CamSys_Vdd_End_Tag,
CamSys_Gpio_Start_Tag,
CamSys_PwrDn,
CamSys_Rst,
CamSys_AfPwr,
CamSys_AfPwrDn,
CamSys_PwrEn,
CamSys_Gpio_End_Tag,
CamSys_Clk_Start_Tag,
CamSys_ClkIn,
CamSys_Clk_End_Tag,
CamSys_Phy_Start_Tag,
CamSys_Phy,
CamSys_Phy_End_Tag,
CamSys_Flash_Trigger_Start_Tag,
CamSys_Flash_Trigger,
CamSys_Flash_Trigger_End_Tag,
CamSys_IOMMU
} camsys_sysctrl_ops_t;
typedef struct camsys_regulator_info_s {
unsigned char name[CAMSYS_NAME_LEN];
int min_uv;
int max_uv;
} camsys_regulator_info_t;
typedef struct camsys_gpio_info_s {
unsigned char name[CAMSYS_NAME_LEN];
unsigned int active;
} camsys_gpio_info_t;
typedef struct camsys_iommu_s{
int client_fd;
int map_fd;
unsigned long linear_addr;
unsigned long len;
}camsys_iommu_t;
typedef struct camsys_sysctrl_s {
unsigned int dev_mask;
camsys_sysctrl_ops_t ops;
unsigned int on;
unsigned int rev[20];
} camsys_sysctrl_t;
typedef struct camsys_flash_info_s {
unsigned char fl_drv_name[CAMSYS_NAME_LEN];
camsys_gpio_info_t fl; //fl_trig
camsys_gpio_info_t fl_en;
} camsys_flash_info_t;
typedef struct camsys_mipiphy_s {
unsigned int data_en_bit; // data lane enable bit;
unsigned int bit_rate; // Mbps/lane
unsigned int phy_index; // phy0,phy1
} camsys_mipiphy_t;
typedef enum camsys_fmt_e {
CamSys_Fmt_Yuv420_8b = 0x18,
CamSys_Fmt_Yuv420_10b = 0x19,
CamSys_Fmt_LegacyYuv420_8b = 0x19,
CamSys_Fmt_Yuv422_8b = 0x1e,
CamSys_Fmt_Yuv422_10b = 0x1f,
CamSys_Fmt_Raw_6b = 0x28,
CamSys_Fmt_Raw_7b = 0x29,
CamSys_Fmt_Raw_8b = 0x2a,
CamSys_Fmt_Raw_10b = 0x2b,
CamSys_Fmt_Raw_12b = 0x2c,
CamSys_Fmt_Raw_14b = 0x2d,
} camsys_fmt_t;
typedef enum camsys_cifio_e {
CamSys_SensorBit0_CifBit0 = 0x00,
CamSys_SensorBit0_CifBit2 = 0x01,
CamSys_SensorBit0_CifBit4 = 0x02,
} camsys_cifio_t;
typedef struct camsys_cifphy_s {
unsigned int cif_num;
camsys_fmt_t fmt;
camsys_cifio_t cifio;
} camsys_cifphy_t;
typedef enum camsys_phy_type_e {
CamSys_Phy_Mipi,
CamSys_Phy_Cif,
CamSys_Phy_end
} camsys_phy_type_t;
typedef struct camsys_extdev_phy_s {
camsys_phy_type_t type;
union {
camsys_mipiphy_t mipi;
camsys_cifphy_t cif;
} info;
} camsys_extdev_phy_t;
typedef struct camsys_extdev_clk_s {
unsigned int in_rate;
unsigned int driver_strength; //0 - 3
} camsys_extdev_clk_t;
typedef struct camsys_devio_name_s {
unsigned char dev_name[CAMSYS_NAME_LEN];
unsigned int dev_id;
camsys_regulator_info_t avdd; // sensor avdd power regulator name
camsys_regulator_info_t dovdd; // sensor dovdd power regulator name
camsys_regulator_info_t dvdd; // sensor dvdd power regulator name "NC" describe no regulator
camsys_regulator_info_t afvdd;
camsys_gpio_info_t pwrdn; // standby gpio name
camsys_gpio_info_t rst; // hard reset gpio name
camsys_gpio_info_t afpwr; // auto focus vcm driver ic power gpio name
camsys_gpio_info_t afpwrdn; // auto focus vcm driver ic standby gpio
camsys_gpio_info_t pwren; // power enable gpio name
camsys_flash_info_t fl;
camsys_extdev_phy_t phy;
camsys_extdev_clk_t clk;
unsigned int dev_cfg; // function bit mask configuration
} camsys_devio_name_t;
typedef struct camsys_version_s {
unsigned int drv_ver;
unsigned int head_ver;
} camsys_version_t;
/*
* I O C T L C O D E S F O R R O C K C H I P S C A M S Y S D E V I C E S
*
*/
#define HAL_DEVID_EXTERNAL CAMSYS_DEVID_EXTERNAL //!< just external devices included
#define CAMSYS_IOC_MAGIC 'M'
#define CAMSYS_IOC_MAXNR 14
#define CAMSYS_VERCHK _IOR(CAMSYS_IOC_MAGIC, 0, camsys_version_t)
#define CAMSYS_I2CRD _IOWR(CAMSYS_IOC_MAGIC, 1, camsys_i2c_info_t)
#define CAMSYS_I2CWR _IOW(CAMSYS_IOC_MAGIC, 2, camsys_i2c_info_t)
#define CAMSYS_SYSCTRL _IOW(CAMSYS_IOC_MAGIC, 3, camsys_sysctrl_t)
#define CAMSYS_REGRD _IOWR(CAMSYS_IOC_MAGIC, 4, camsys_reginfo_t)
#define CAMSYS_REGWR _IOW(CAMSYS_IOC_MAGIC, 5, camsys_reginfo_t)
#define CAMSYS_REGISTER_DEVIO _IOW(CAMSYS_IOC_MAGIC, 6, camsys_devio_name_t)
#define CAMSYS_DEREGISTER_DEVIO _IOW(CAMSYS_IOC_MAGIC, 7, unsigned int)
#define CAMSYS_IRQCONNECT _IOW(CAMSYS_IOC_MAGIC, 8, camsys_irqcnnt_t)
#define CAMSYS_IRQWAIT _IOR(CAMSYS_IOC_MAGIC, 9, camsys_irqsta_t)
#define CAMSYS_IRQDISCONNECT _IOW(CAMSYS_IOC_MAGIC, 10, camsys_irqcnnt_t)
#define CAMSYS_QUREYMEM _IOR(CAMSYS_IOC_MAGIC, 11, camsys_querymem_t)
#define CAMSYS_QUREYIOMMU _IOW(CAMSYS_IOC_MAGIC, 12, int)
#endif
Android.mk如下:
1 LOCAL_PATH := $(call my-dir)
2
3 include $(CLEAR_VARS)
4
5 LOCAL_MODULE_TAGS := optional
6
7 LOCAL_MODULE := camera
8
9 LOCAL_SRC_FILES := camera.cpp
10
11 include $(BUILD_EXECUTABLE)
三、实现结果:已经成果获取对应寄存器的地址的内容
觉得不错，就给我点小支持吧，蟹蟹
