mirror of https://gitee.com/openkylin/linux.git
84 lines
2.3 KiB
C
84 lines
2.3 KiB
C
#include "dib3000-common.h"
|
|
|
|
#ifdef CONFIG_DVB_DIBCOM_DEBUG
|
|
static int debug;
|
|
module_param(debug, int, 0644);
|
|
MODULE_PARM_DESC(debug, "set debugging level (1=info,2=i2c,4=srch (|-able)).");
|
|
#endif
|
|
#define deb_info(args...) dprintk(0x01,args)
|
|
#define deb_i2c(args...) dprintk(0x02,args)
|
|
#define deb_srch(args...) dprintk(0x04,args)
|
|
|
|
|
|
int dib3000_read_reg(struct dib3000_state *state, u16 reg)
|
|
{
|
|
u8 wb[] = { ((reg >> 8) | 0x80) & 0xff, reg & 0xff };
|
|
u8 rb[2];
|
|
struct i2c_msg msg[] = {
|
|
{ .addr = state->config.demod_address, .flags = 0, .buf = wb, .len = 2 },
|
|
{ .addr = state->config.demod_address, .flags = I2C_M_RD, .buf = rb, .len = 2 },
|
|
};
|
|
|
|
if (i2c_transfer(state->i2c, msg, 2) != 2)
|
|
deb_i2c("i2c read error\n");
|
|
|
|
deb_i2c("reading i2c bus (reg: %5d 0x%04x, val: %5d 0x%04x)\n",reg,reg,
|
|
(rb[0] << 8) | rb[1],(rb[0] << 8) | rb[1]);
|
|
|
|
return (rb[0] << 8) | rb[1];
|
|
}
|
|
|
|
int dib3000_write_reg(struct dib3000_state *state, u16 reg, u16 val)
|
|
{
|
|
u8 b[] = {
|
|
(reg >> 8) & 0xff, reg & 0xff,
|
|
(val >> 8) & 0xff, val & 0xff,
|
|
};
|
|
struct i2c_msg msg[] = {
|
|
{ .addr = state->config.demod_address, .flags = 0, .buf = b, .len = 4 }
|
|
};
|
|
deb_i2c("writing i2c bus (reg: %5d 0x%04x, val: %5d 0x%04x)\n",reg,reg,val,val);
|
|
|
|
return i2c_transfer(state->i2c,msg, 1) != 1 ? -EREMOTEIO : 0;
|
|
}
|
|
|
|
int dib3000_search_status(u16 irq,u16 lock)
|
|
{
|
|
if (irq & 0x02) {
|
|
if (lock & 0x01) {
|
|
deb_srch("auto search succeeded\n");
|
|
return 1; // auto search succeeded
|
|
} else {
|
|
deb_srch("auto search not successful\n");
|
|
return 0; // auto search failed
|
|
}
|
|
} else if (irq & 0x01) {
|
|
deb_srch("auto search failed\n");
|
|
return 0; // auto search failed
|
|
}
|
|
return -1; // try again
|
|
}
|
|
|
|
/* for auto search */
|
|
u16 dib3000_seq[2][2][2] = /* fft,gua, inv */
|
|
{ /* fft */
|
|
{ /* gua */
|
|
{ 0, 1 }, /* 0 0 { 0,1 } */
|
|
{ 3, 9 }, /* 0 1 { 0,1 } */
|
|
},
|
|
{
|
|
{ 2, 5 }, /* 1 0 { 0,1 } */
|
|
{ 6, 11 }, /* 1 1 { 0,1 } */
|
|
}
|
|
};
|
|
|
|
MODULE_AUTHOR("Patrick Boettcher <patrick.boettcher@desy.de");
|
|
MODULE_DESCRIPTION("Common functions for the dib3000mb/dib3000mc dvb frontend drivers");
|
|
MODULE_LICENSE("GPL");
|
|
|
|
EXPORT_SYMBOL(dib3000_seq);
|
|
|
|
EXPORT_SYMBOL(dib3000_read_reg);
|
|
EXPORT_SYMBOL(dib3000_write_reg);
|
|
EXPORT_SYMBOL(dib3000_search_status);
|