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lg3303_set_modulation: program the requested modulation on every request

This commit is contained in:
jmcneill 2011-07-15 10:10:35 +00:00
parent 7f1ed5f987
commit 13e60a5238
1 changed files with 28 additions and 31 deletions
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59
sys/dev/i2c/lg3303.c
View File

@ -1,4 +1,4 @@
/* $NetBSD: lg3303.c,v 1.3 2011/07/15 03:29:23 jmcneill Exp $ */
/* $NetBSD: lg3303.c,v 1.4 2011/07/15 10:10:35 jmcneill Exp $ */
/*-
* Copyright 2007 Jason Harmening
@ -28,7 +28,7 @@
*/
#include <sys/param.h>
__KERNEL_RCSID(0, "$NetBSD: lg3303.c,v 1.3 2011/07/15 03:29:23 jmcneill Exp $");
__KERNEL_RCSID(0, "$NetBSD: lg3303.c,v 1.4 2011/07/15 10:10:35 jmcneill Exp $");
#include <sys/types.h>
#include <sys/kmem.h>
@ -199,44 +199,41 @@ lg3303_set_modulation(struct lg3303 *lg, fe_modulation_t modulation)
0x49, 0x08,
0x4a, 0x9b
};
uint8_t top_ctrl[] = {REG_TOP_CONTROL, 0x00};
error = lg3303_reset(lg);
if (error)
return error;
if (lg->current_modulation != modulation) {
uint8_t top_ctrl[] = {REG_TOP_CONTROL, 0x00};
if (lg->flags & LG3303_CFG_SERIAL_INPUT)
top_ctrl[1] = 0x40;
if (lg->flags & LG3303_CFG_SERIAL_INPUT)
top_ctrl[1] = 0x40;
switch (modulation) {
case VSB_8:
top_ctrl[1] |= 0x03;
error = lg3303_write(lg, vsb_data, sizeof(vsb_data));
if (error)
return error;
break;
case QAM_256:
top_ctrl[1] |= 0x01;
/* FALLTHROUGH */
case QAM_64:
error = lg3303_write(lg, qam_data, sizeof(qam_data));
if (error)
return error;
break;
default:
device_printf(lg->parent,
"lg3303: unsupported modulation type (%d)\n",
modulation);
return EINVAL;
}
error = lg3303_write(lg, top_ctrl, sizeof(top_ctrl));
switch (modulation) {
case VSB_8:
top_ctrl[1] |= 0x03;
error = lg3303_write(lg, vsb_data, sizeof(vsb_data));
if (error)
return error;
lg->current_modulation = modulation;
lg3303_reset(lg);
break;
case QAM_256:
top_ctrl[1] |= 0x01;
/* FALLTHROUGH */
case QAM_64:
error = lg3303_write(lg, qam_data, sizeof(qam_data));
if (error)
return error;
break;
default:
device_printf(lg->parent,
"lg3303: unsupported modulation type (%d)\n",
modulation);
return EINVAL;
}
error = lg3303_write(lg, top_ctrl, sizeof(top_ctrl));
if (error)
return error;
lg->current_modulation = modulation;
lg3303_reset(lg);
return error;
}