V4L/DVB (9928): Convert GP8PSK module to use S2API

This patch converts the gp8psk module to use the S2API.
It pretends to be  DVB-S2 capable in order to allow the various
supported modulations (8PSK, QPSK-Turbo, etc), and keep software
compatibility with the S2API patches for Mythtv and VDR.

Signed-off by: Alan Nisota <alannisota@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

3 files changed, 131 insertions, 26 deletions

diff --git a/drivers/media/dvb/dvb-usb/gp8psk-fe.c b/drivers/media/dvb/dvb-usb/gp8psk-fe.c
index 262a858c3068..20eadf9318e0 100644
--- a/drivers/media/dvb/dvb-usb/gp8psk-fe.c
+++ b/drivers/media/dvb/dvb-usb/gp8psk-fe.c
@@ -25,6 +25,20 @@ struct gp8psk_fe_state {
         unsigned long status_check_interval;
 };
 
+static int gp8psk_tuned_to_DCII(struct dvb_frontend *fe)
+{
+        struct gp8psk_fe_state *st = fe->demodulator_priv;
+        u8 status;
+        gp8psk_usb_in_op(st->d, GET_8PSK_CONFIG, 0, 0, &status, 1);
+        return status & bmDCtuned;
+}
+
+static int gp8psk_set_tuner_mode(struct dvb_frontend *fe, int mode)
+{
+        struct gp8psk_fe_state *state = fe->demodulator_priv;
+        return gp8psk_usb_out_op(state->d, SET_8PSK_CONFIG, mode, 0, NULL, 0);
+}
+
 static int gp8psk_fe_update_status(struct gp8psk_fe_state *st)
 {
         u8 buf[6];
@@ -99,39 +113,114 @@ static int gp8psk_fe_get_tune_settings(struct dvb_frontend* fe, struct dvb_front
         return 0;
 }
 
+static int gp8psk_fe_set_property(struct dvb_frontend *fe,
+        struct dtv_property *tvp)
+{
+        deb_fe("%s(..)\n", __func__);
+        return 0;
+}
+
+static int gp8psk_fe_get_property(struct dvb_frontend *fe,
+        struct dtv_property *tvp)
+{
+        deb_fe("%s(..)\n", __func__);
+        return 0;
+}
+
+
 static int gp8psk_fe_set_frontend(struct dvb_frontend* fe,
                                   struct dvb_frontend_parameters *fep)
 {
         struct gp8psk_fe_state *state = fe->demodulator_priv;
+        struct dtv_frontend_properties *c = &fe->dtv_property_cache;
         u8 cmd[10];
         u32 freq = fep->frequency * 1000;
+        int gp_product_id = le16_to_cpu(state->d->udev->descriptor.idProduct);
+
+        deb_fe("%s()\n", __func__);
 
         cmd[4] = freq         & 0xff;
         cmd[5] = (freq >> 8)  & 0xff;
         cmd[6] = (freq >> 16) & 0xff;
         cmd[7] = (freq >> 24) & 0xff;
 
-        switch(fe->ops.info.type) {
-        case FE_QPSK:
-                cmd[0] =  fep->u.qpsk.symbol_rate        & 0xff;
-                cmd[1] = (fep->u.qpsk.symbol_rate >>  8) & 0xff;
-                cmd[2] = (fep->u.qpsk.symbol_rate >> 16) & 0xff;
-                cmd[3] = (fep->u.qpsk.symbol_rate >> 24) & 0xff;
-                cmd[8] = ADV_MOD_DVB_QPSK;
-                cmd[9] = 0x03; /*ADV_MOD_FEC_XXX*/
+        switch (c->delivery_system) {
+        case SYS_DVBS:
+                /* Only QPSK is supported for DVB-S */
+                if (c->modulation != QPSK) {
+                        deb_fe("%s: unsupported modulation selected (%d)\n",
+                                __func__, c->modulation);
+                        return -EOPNOTSUPP;
+                }
+                c->fec_inner = FEC_AUTO;
                 break;
+        case SYS_DVBS2:
+                deb_fe("%s: DVB-S2 delivery system selected\n", __func__);
+                break;
+
         default:
-                // other modes are unsuported right now
-                cmd[0] = 0;
-                cmd[1] = 0;
-                cmd[2] = 0;
-                cmd[3] = 0;
-                cmd[8] = 0;
+                deb_fe("%s: unsupported delivery system selected (%d)\n",
+                        __func__, c->delivery_system);
+                return -EOPNOTSUPP;
+        }
+
+        cmd[0] =  c->symbol_rate        & 0xff;
+        cmd[1] = (c->symbol_rate >>  8) & 0xff;
+        cmd[2] = (c->symbol_rate >> 16) & 0xff;
+        cmd[3] = (c->symbol_rate >> 24) & 0xff;
+        switch (c->modulation) {
+        case QPSK:
+                if (gp_product_id == USB_PID_GENPIX_8PSK_REV_1_WARM)
+                        if (gp8psk_tuned_to_DCII(fe))
+                                gp8psk_bcm4500_reload(state->d);
+                switch (c->fec_inner) {
+                case FEC_1_2:
+                        cmd[9] = 0; break;
+                case FEC_2_3:
+                        cmd[9] = 1; break;
+                case FEC_3_4:
+                        cmd[9] = 2; break;
+                case FEC_5_6:
+                        cmd[9] = 3; break;
+                case FEC_7_8:
+                        cmd[9] = 4; break;
+                case FEC_AUTO:
+                        cmd[9] = 5; break;
+                default:
+                        cmd[9] = 5; break;
+                }
+                cmd[8] = ADV_MOD_DVB_QPSK;
+                break;
+        case PSK_8: /* PSK_8 is for compatibility with DN */
+                cmd[8] = ADV_MOD_TURBO_8PSK;
+                switch (c->fec_inner) {
+                case FEC_2_3:
+                        cmd[9] = 0; break;
+                case FEC_3_4:
+                        cmd[9] = 1; break;
+                case FEC_3_5:
+                        cmd[9] = 2; break;
+                case FEC_5_6:
+                        cmd[9] = 3; break;
+                case FEC_8_9:
+                        cmd[9] = 4; break;
+                default:
+                        cmd[9] = 0; break;
+                }
+                break;
+        case QAM_16: /* QAM_16 is for compatibility with DN */
+                cmd[8] = ADV_MOD_TURBO_16QAM;
                 cmd[9] = 0;
                 break;
+        default: /* Unknown modulation */
+                deb_fe("%s: unsupported modulation selected (%d)\n",
+                        __func__, c->modulation);
+                return -EOPNOTSUPP;
         }
 
-        gp8psk_usb_out_op(state->d,TUNE_8PSK,0,0,cmd,10);
+        if (gp_product_id == USB_PID_GENPIX_8PSK_REV_1_WARM)
+                gp8psk_set_tuner_mode(fe, 0);
+        gp8psk_usb_out_op(state->d, TUNE_8PSK, 0, 0, cmd, 10);
 
         state->lock = 0;
         state->next_status_check = jiffies;
@@ -140,13 +229,6 @@ static int gp8psk_fe_set_frontend(struct dvb_frontend* fe,
         return 0;
 }
 
-static int gp8psk_fe_get_frontend(struct dvb_frontend* fe,
-                                  struct dvb_frontend_parameters *fep)
-{
-        return 0;
-}
-
-
 static int gp8psk_fe_send_diseqc_msg (struct dvb_frontend* fe,
                                     struct dvb_diseqc_master_cmd *m)
 {
@@ -261,9 +343,13 @@ static struct dvb_frontend_ops gp8psk_fe_ops = {
                 .symbol_rate_max        = 45000000,
                 .symbol_rate_tolerance  = 500,  /* ppm */
                 .caps = FE_CAN_INVERSION_AUTO |
-                                FE_CAN_FEC_1_2 | FE_CAN_FEC_2_3 | FE_CAN_FEC_3_4 |
-                                FE_CAN_FEC_5_6 | FE_CAN_FEC_7_8 | FE_CAN_FEC_AUTO |
-                                FE_CAN_QPSK
+                        FE_CAN_FEC_1_2 | FE_CAN_FEC_2_3 | FE_CAN_FEC_3_4 |
+                        FE_CAN_FEC_5_6 | FE_CAN_FEC_7_8 | FE_CAN_FEC_AUTO |
+                        /*
+                         * FE_CAN_QAM_16 is for compatibility
+                         * (Myth incorrectly detects Turbo-QPSK as plain QAM-16)
+                         */
+                        FE_CAN_QPSK | FE_CAN_QAM_16
         },
 
         .release = gp8psk_fe_release,
@@ -271,8 +357,10 @@ static struct dvb_frontend_ops gp8psk_fe_ops = {
         .init = NULL,
         .sleep = NULL,
 
+        .set_property = gp8psk_fe_set_property,
+        .get_property = gp8psk_fe_get_property,
         .set_frontend = gp8psk_fe_set_frontend,
-        .get_frontend = gp8psk_fe_get_frontend,
+
         .get_tune_settings = gp8psk_fe_get_tune_settings,
 
         .read_status = gp8psk_fe_read_status,
diff --git a/drivers/media/dvb/dvb-usb/gp8psk.c b/drivers/media/dvb/dvb-usb/gp8psk.c
index d965a923f391..c1da962cc886 100644
--- a/drivers/media/dvb/dvb-usb/gp8psk.c
+++ b/drivers/media/dvb/dvb-usb/gp8psk.c
@@ -174,6 +174,22 @@ static int gp8psk_power_ctrl(struct dvb_usb_device *d, int onoff)
         return 0;
 }
 
+int gp8psk_bcm4500_reload(struct dvb_usb_device *d)
+{
+        u8 buf;
+        int gp_product_id = le16_to_cpu(d->udev->descriptor.idProduct);
+        /* Turn off 8psk power */
+        if (gp8psk_usb_in_op(d, BOOT_8PSK, 0, 0, &buf, 1))
+                return -EINVAL;
+        /* Turn On 8psk power */
+        if (gp8psk_usb_in_op(d, BOOT_8PSK, 1, 0, &buf, 1))
+                return -EINVAL;
+        /* load BCM4500 firmware */
+        if (gp_product_id == USB_PID_GENPIX_8PSK_REV_1_WARM)
+                if (gp8psk_load_bcm4500fw(d))
+                        return EINVAL;
+        return 0;
+}
 
 static int gp8psk_streaming_ctrl(struct dvb_usb_adapter *adap, int onoff)
 {
diff --git a/drivers/media/dvb/dvb-usb/gp8psk.h b/drivers/media/dvb/dvb-usb/gp8psk.h
index e5cd8149c23d..e83a57506cfa 100644
--- a/drivers/media/dvb/dvb-usb/gp8psk.h
+++ b/drivers/media/dvb/dvb-usb/gp8psk.h
@@ -92,5 +92,6 @@ extern struct dvb_frontend * gp8psk_fe_attach(struct dvb_usb_device *d);
 extern int gp8psk_usb_in_op(struct dvb_usb_device *d, u8 req, u16 value, u16 index, u8 *b, int blen);
 extern int gp8psk_usb_out_op(struct dvb_usb_device *d, u8 req, u16 value,
                              u16 index, u8 *b, int blen);
+extern int gp8psk_bcm4500_reload(struct dvb_usb_device *d);
 
 #endif