V4L/DVB (7661): stv0299: Add flag to turn off OP0 output

Add flag to turn off OP0 output.

Signed-off-by: Oliver Endriss <o.endriss@gmx.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>

2 files changed, 33 insertions, 15 deletions

diff --git a/drivers/media/dvb/frontends/stv0299.c b/drivers/media/dvb/frontends/stv0299.c
index f7c36741537d..17556183e871 100644
--- a/drivers/media/dvb/frontends/stv0299.c
+++ b/drivers/media/dvb/frontends/stv0299.c
@@ -366,26 +366,32 @@ static int stv0299_set_voltage (struct dvb_frontend* fe, fe_sec_voltage_t voltag
          *  H/V switching over OP0, OP1 and OP2 are LNB power enable bits
          */
         reg0x0c &= 0x0f;
-
-        if (voltage == SEC_VOLTAGE_OFF) {
-                stv0299_writeregI (state, 0x0c, 0x00); /*       LNB power off! */
-                return stv0299_writeregI (state, 0x08, 0x00); /*        LNB power off! */
-        }
-
-        stv0299_writeregI (state, 0x08, (reg0x08 & 0x3f) | (state->config->lock_output << 6));
+        reg0x08 = (reg0x08 & 0x3f) | (state->config->lock_output << 6);
 
         switch (voltage) {
         case SEC_VOLTAGE_13:
-                if (state->config->volt13_op0_op1 == STV0299_VOLT13_OP0) reg0x0c |= 0x10;
-                else reg0x0c |= 0x40;
-
-                return stv0299_writeregI(state, 0x0c, reg0x0c);
-
+                if (state->config->volt13_op0_op1 == STV0299_VOLT13_OP0)
+                        reg0x0c |= 0x10; /* OP1 off, OP0 on */
+                else
+                        reg0x0c |= 0x40; /* OP1 on, OP0 off */
+                break;
         case SEC_VOLTAGE_18:
-                return stv0299_writeregI(state, 0x0c, reg0x0c | 0x50);
+                reg0x0c |= 0x50; /* OP1 on, OP0 on */
+                break;
+        case SEC_VOLTAGE_OFF:
+                /* LNB power off! */
+                reg0x08 = 0x00;
+                reg0x0c = 0x00;
+                break;
         default:
                 return -EINVAL;
         };
+
+        if (state->config->op0_off)
+                reg0x0c &= ~0x10;
+
+        stv0299_writeregI(state, 0x08, reg0x08);
+        return stv0299_writeregI(state, 0x0c, reg0x0c);
 }
 
 static int stv0299_send_legacy_dish_cmd (struct dvb_frontend* fe, unsigned long cmd)
@@ -445,11 +451,20 @@ static int stv0299_init (struct dvb_frontend* fe)
 {
         struct stv0299_state* state = fe->demodulator_priv;
         int i;
+        u8 reg;
+        u8 val;
 
         dprintk("stv0299: init chip\n");
 
-        for (i=0; !(state->config->inittab[i] == 0xff && state->config->inittab[i+1] == 0xff); i+=2)
-                stv0299_writeregI(state, state->config->inittab[i], state->config->inittab[i+1]);
+        for (i = 0; ; i += 2)  {
+                reg = state->config->inittab[i];
+                val = state->config->inittab[i+1];
+                if (reg == 0xff && val == 0xff)
+                        break;
+                if (reg == 0x0c && state->config->op0_off)
+                        val &= ~0x10;
+                stv0299_writeregI(state, reg, val);
+        }
 
         return 0;
 }
diff --git a/drivers/media/dvb/frontends/stv0299.h b/drivers/media/dvb/frontends/stv0299.h
index 84eaeb518540..abd9cf8153cf 100644
--- a/drivers/media/dvb/frontends/stv0299.h
+++ b/drivers/media/dvb/frontends/stv0299.h
@@ -82,6 +82,9 @@ struct stv0299_config
         /* Is 13v controlled by OP0 or OP1? */
         u8 volt13_op0_op1:1;
 
+        /* Turn-off OP0? */
+        u8 op0_off:1;
+
         /* minimum delay before retuning */
         int min_delay_ms;