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V4L/DVB (7574): mt312: Add support for zl10313 demod

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Add zl10313 support to mt312 driver.
zl10313 uses 10.111MHz xtal.

Signed-off-by: Matthias Schwarzott <zzam@gentoo.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
This commit is contained in:
Matthias Schwarzott 2008-04-12 15:04:49 -03:00 committed by Mauro Carvalho Chehab
parent 111221fb67
commit 6a5cbd591c
2 changed files with 86 additions and 9 deletions
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90
drivers/media/dvb/frontends/mt312.c
View File

@ -1,7 +1,8 @@
/*
Driver for Zarlink VP310/MT312 Satellite Channel Decoder
Driver for Zarlink VP310/MT312/ZL10313 Satellite Channel Decoder
Copyright (C) 2003 Andreas Oberritter <obi@linuxtv.org>
Copyright (C) 2008 Matthias Schwarzott <zzam@gentoo.org>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
@ -55,6 +56,7 @@ static int debug;
} while (0)
#define MT312_PLL_CLK 10000000UL /* 10 MHz */
#define MT312_PLL_CLK_10_111 10111000UL /* 10.111 MHz */
static int mt312_read(struct mt312_state *state, const enum mt312_reg_addr reg,
u8 *buf, const size_t count)
@ -264,6 +266,32 @@ static int mt312_initfe(struct dvb_frontend *fe)
return ret;
}
switch (state->id) {
case ID_ZL10313:
/* enable ADC */
ret = mt312_writereg(state, GPP_CTRL, 0x80);
if (ret < 0)
return ret;
/* configure ZL10313 for optimal ADC performance */
buf[0] = 0x80;
buf[1] = 0xB0;
ret = mt312_write(state, HW_CTRL, buf, 2);
if (ret < 0)
return ret;
/* enable MPEG output and ADCs */
ret = mt312_writereg(state, HW_CTRL, 0x00);
if (ret < 0)
return ret;
ret = mt312_writereg(state, MPEG_CTRL, 0x00);
if (ret < 0)
return ret;
break;
}
/* SYS_CLK */
buf[0] = mt312_div(state->xtal * state->freq_mult * 2, 1000000);
@ -278,7 +306,17 @@ static int mt312_initfe(struct dvb_frontend *fe)
if (ret < 0)
return ret;
ret = mt312_writereg(state, OP_CTRL, 0x53);
/* different MOCLK polarity */
switch (state->id) {
case ID_ZL10313:
buf[0] = 0x33;
break;
default:
buf[0] = 0x53;
break;
}
ret = mt312_writereg(state, OP_CTRL, buf[0]);
if (ret < 0)
return ret;
@ -552,6 +590,7 @@ static int mt312_set_frontend(struct dvb_frontend *fe,
break;
case ID_MT312:
case ID_ZL10313:
break;
default:
@ -617,11 +656,29 @@ static int mt312_i2c_gate_ctrl(struct dvb_frontend *fe, int enable)
{
struct mt312_state *state = fe->demodulator_priv;
if (enable) {
return mt312_writereg(state, GPP_CTRL, 0x40);
} else {
return mt312_writereg(state, GPP_CTRL, 0x00);
u8 val = 0x00;
int ret;
switch (state->id) {
case ID_ZL10313:
ret = mt312_readreg(state, GPP_CTRL, &val);
if (ret < 0)
goto error;
/* preserve this bit to not accidently shutdown ADC */
val &= 0x80;
break;
}
if (enable)
val |= 0x40;
else
val &= ~0x40;
ret = mt312_writereg(state, GPP_CTRL, val);
error:
return ret;
}
static int mt312_sleep(struct dvb_frontend *fe)
@ -635,6 +692,18 @@ static int mt312_sleep(struct dvb_frontend *fe)
if (ret < 0)
return ret;
if (state->id == ID_ZL10313) {
/* reset ADC */
ret = mt312_writereg(state, GPP_CTRL, 0x00);
if (ret < 0)
return ret;
/* full shutdown of ADCs, mpeg bus tristated */
ret = mt312_writereg(state, HW_CTRL, 0x0d);
if (ret < 0)
return ret;
}
ret = mt312_readreg(state, CONFIG, &config);
if (ret < 0)
return ret;
@ -736,8 +805,13 @@ struct dvb_frontend *vp310_mt312_attach(const struct mt312_config *config,
state->xtal = MT312_PLL_CLK;
state->freq_mult = 6;
break;
case ID_ZL10313:
strcpy(state->frontend.ops.info.name, "Zarlink ZL10313 DVB-S");
state->xtal = MT312_PLL_CLK_10_111;
state->freq_mult = 9;
break;
default:
printk(KERN_WARNING "Only Zarlink VP310/MT312"
printk(KERN_WARNING "Only Zarlink VP310/MT312/ZL10313"
" are supported chips.\n");
goto error;
}
@ -753,7 +827,7 @@ EXPORT_SYMBOL(vp310_mt312_attach);
module_param(debug, int, 0644);
MODULE_PARM_DESC(debug, "Turn on/off frontend debugging (default:off).");
MODULE_DESCRIPTION("Zarlink VP310/MT312 DVB-S Demodulator driver");
MODULE_DESCRIPTION("Zarlink VP310/MT312/ZL10313 DVB-S Demodulator driver");
MODULE_AUTHOR("Andreas Oberritter <obi@linuxtv.org>");
MODULE_LICENSE("GPL");

5
drivers/media/dvb/frontends/mt312_priv.h
View File

@ -110,6 +110,8 @@ enum mt312_reg_addr {
VIT_ERRPER_H = 83,
VIT_ERRPER_M = 84,
VIT_ERRPER_L = 85,
HW_CTRL = 84, /* ZL10313 only */
MPEG_CTRL = 85, /* ZL10313 only */
VIT_SETUP = 86,
VIT_REF0 = 87,
VIT_REF1 = 88,
@ -156,7 +158,8 @@ enum mt312_reg_addr {
enum mt312_model_id {
ID_VP310 = 1,
ID_MT312 = 3
ID_MT312 = 3,
ID_ZL10313 = 5,
};
#endif /* DVB_FRONTENDS_MT312_PRIV */