Hi,
On this patch:
Added a few defines to describe what every constant in the set_voltage function.
Added the description to the CX24117 GPIO control commands.
Moved the GPIODIR setup to the initfe function.
Regards,
Luis
Signed-off-by: Luis Alves <lja...@gmail.com>
---
drivers/media/dvb-frontends/cx24117.c | 60 +++++++++++++++++++++------------
1 file changed, 38 insertions(+), 22 deletions(-)
diff --git a/drivers/media/dvb-frontends/cx24117.c
b/drivers/media/dvb-frontends/cx24117.c
index 476b422..3c7523b 100644
--- a/drivers/media/dvb-frontends/cx24117.c
+++ b/drivers/media/dvb-frontends/cx24117.c
@@ -129,6 +129,14 @@
#define CX24117_DISEQC_MINI_A (0)
#define CX24117_DISEQC_MINI_B (1)
+/* LNB voltage enable GPIO pins */
+#define CX24117_DEMOD0_LNBDCPIN (1 << 4)
+#define CX24117_DEMOD1_LNBDCPIN (1 << 5)
+
+/* Demod to LNB mapping */
+#define CX24117_DEMOD0_LNB (1)
+#define CX24117_DEMOD1_LNB (0)
+
#define CX24117_PNE (0) /* 0 disabled / 2 enabled */
#define CX24117_OCC (1) /* 0 disabled / 1 enabled */
@@ -142,6 +150,8 @@ enum cmds {
CMD_LNBSEND = 0x21, /* Formerly CMD_SEND_DISEQC */
CMD_LNBDCLEVEL = 0x22,
CMD_SET_TONE = 0x23,
+ CMD_GPIODIR = 0x32,
+ CMD_GPIOOUT = 0x33,
CMD_UPDFWVERS = 0x35,
CMD_TUNERSLEEP = 0x36,
};
@@ -891,7 +901,8 @@ static int cx24117_set_voltage(struct dvb_frontend *fe,
struct cx24117_state *state = fe->demodulator_priv;
struct cx24117_cmd cmd;
int ret;
- u8 reg = (state->demod == 0) ? 0x10 : 0x20;
+ u8 pin = (state->demod == 0) ?
+ CX24117_DEMOD0_LNBDCPIN : CX24117_DEMOD1_LNBDCPIN;
dev_dbg(&state->priv->i2c->dev, "%s() demod%d %s\n",
__func__, state->demod,
@@ -899,26 +910,18 @@ static int cx24117_set_voltage(struct dvb_frontend *fe,
voltage == SEC_VOLTAGE_18 ? "SEC_VOLTAGE_18" :
"SEC_VOLTAGE_OFF");
- /* CMD 32 */
- cmd.args[0] = 0x32;
- cmd.args[1] = reg;
- cmd.args[2] = reg;
- cmd.len = 3;
- ret = cx24117_cmd_execute(fe, &cmd);
- if (ret)
- return ret;
-
if ((voltage == SEC_VOLTAGE_13) ||
(voltage == SEC_VOLTAGE_18)) {
- /* CMD 33 */
- cmd.args[0] = 0x33;
- cmd.args[1] = reg;
- cmd.args[2] = reg;
+ /* Turn on LNB DC voltage */
+ cmd.args[0] = CMD_GPIOOUT;
+ cmd.args[1] = pin; /* level */
+ cmd.args[2] = pin; /* mask */
cmd.len = 3;
ret = cx24117_cmd_execute(fe, &cmd);
if (ret != 0)
return ret;
+ /* Wait for any pending diseqc TX */
ret = cx24117_wait_for_lnb(fe);
if (ret != 0)
return ret;
@@ -926,22 +929,25 @@ static int cx24117_set_voltage(struct dvb_frontend *fe,
/* Wait for voltage/min repeat delay */
msleep(100);
- /* CMD 22 - CMD_LNBDCLEVEL */
+ /* Set DC level (0=13V 1=18V) */
cmd.args[0] = CMD_LNBDCLEVEL;
- cmd.args[1] = state->demod ? 0 : 1;
- cmd.args[2] = (voltage == SEC_VOLTAGE_18 ? 0x01 : 0x00);
+ cmd.args[1] = (state->demod == 0) ?
+ CX24117_DEMOD0_LNB : CX24117_DEMOD1_LNB;
+ cmd.args[2] = (voltage == SEC_VOLTAGE_18 ? 1 : 0);
cmd.len = 3;
+ ret = cx24117_cmd_execute(fe, &cmd);
/* Min delay time before DiSEqC send */
msleep(20);
} else {
- cmd.args[0] = 0x33;
- cmd.args[1] = 0x00;
- cmd.args[2] = reg;
+ /* Turn off LNB DC voltage */
+ cmd.args[0] = CMD_GPIOOUT;
+ cmd.args[1] = 0; /* level */
+ cmd.args[2] = pin; /* mask */
cmd.len = 3;
+ ret = cx24117_cmd_execute(fe, &cmd);
}
-
- return cx24117_cmd_execute(fe, &cmd);
+ return ret;
}
static int cx24117_set_tone(struct dvb_frontend *fe,
@@ -1260,6 +1266,16 @@ static int cx24117_initfe(struct dvb_frontend *fe)
cmd.args[2] = CX24117_OCC;
cmd.len = 3;
ret = cx24117_cmd_execute_nolock(fe, &cmd);
+ if (ret != 0)
+ goto exit;
+
+ /* Setup cx24117 GPIO direction */
+ /* These pins turn on/off LNB DC voltage */
+ cmd.args[0] = CMD_GPIODIR;
+ cmd.args[1] = CX24117_DEMOD0_LNBDCPIN | CX24117_DEMOD1_LNBDCPIN;
+ cmd.args[2] = CX24117_DEMOD0_LNBDCPIN | CX24117_DEMOD1_LNBDCPIN;
+ cmd.len = 3;
+ ret = cx24117_cmd_execute_nolock(fe, &cmd);
exit:
mutex_unlock(&state->priv->fe_lock);
--
1.7.9.5
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