#include <linux/moduleparam.h>
#include <linux/init.h>
#include <linux/delay.h>
+#include <linux/string.h>
+#include <linux/slab.h>
#include "dvb_frontend.h"
#include "mt352_priv.h"
{
struct mt352_state* state = fe->demodulator_priv;
- u16 signal = ((mt352_read_register(state, AGC_GAIN_1) << 8) & 0x0f) |
- (mt352_read_register(state, AGC_GAIN_0));
+ /* align the 12 bit AGC gain with the most significant bits */
+ u16 signal = ((mt352_read_register(state, AGC_GAIN_1) & 0x0f) << 12) |
+ (mt352_read_register(state, AGC_GAIN_0) << 4);
+ /* inverse of gain is signal strength */
*strength = ~signal;
return 0;
}
struct mt352_state* state = NULL;
/* allocate memory for the internal state */
- state = kmalloc(sizeof(struct mt352_state), GFP_KERNEL);
+ state = kzalloc(sizeof(struct mt352_state), GFP_KERNEL);
if (state == NULL) goto error;
- memset(state,0,sizeof(*state));
/* setup the state */
state->i2c = i2c;