V4L/DVB (13979): [STV090x] Added possibility to set a fixed TS output clock.

This could be useful for p.e. Common Interface applications where data rate is limited.

Signed-off-by: Andreas Regel <andreas.regel@gmx.de>
Signed-off-by: Manu Abraham <manu@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

2 files changed, 67 insertions, 0 deletions

diff --git a/drivers/media/dvb/frontends/stv090x.c b/drivers/media/dvb/frontends/stv090x.c
index 2a25dd15b7fd..93be76ced896 100644
--- a/drivers/media/dvb/frontends/stv090x.c
+++ b/drivers/media/dvb/frontends/stv090x.c
@@ -4199,6 +4199,71 @@ static int stv090x_set_tspath(struct stv090x_state *state)
         default:
                 break;
         }
+
+        if (state->config->ts1_clk > 0) {
+                u32 speed;
+
+                switch (state->config->ts1_mode) {
+                case STV090x_TSMODE_PARALLEL_PUNCTURED:
+                case STV090x_TSMODE_DVBCI:
+                default:
+                        speed = state->internal->mclk /
+                                (state->config->ts1_clk / 4);
+                        if (speed < 0x08)
+                                speed = 0x08;
+                        if (speed > 0xFF)
+                                speed = 0xFF;
+                        break;
+                case STV090x_TSMODE_SERIAL_PUNCTURED:
+                case STV090x_TSMODE_SERIAL_CONTINUOUS:
+                        speed = state->internal->mclk /
+                                (state->config->ts1_clk / 32);
+                        if (speed < 0x20)
+                                speed = 0x20;
+                        if (speed > 0xFF)
+                                speed = 0xFF;
+                        break;
+                }
+                reg = stv090x_read_reg(state, STV090x_P1_TSCFGM);
+                STV090x_SETFIELD_Px(reg, TSFIFO_MANSPEED_FIELD, 3);
+                if (stv090x_write_reg(state, STV090x_P1_TSCFGM, reg) < 0)
+                        goto err;
+                if (stv090x_write_reg(state, STV090x_P1_TSSPEED, speed) < 0)
+                        goto err;
+        }
+
+        if (state->config->ts2_clk > 0) {
+                u32 speed;
+
+                switch (state->config->ts2_mode) {
+                case STV090x_TSMODE_PARALLEL_PUNCTURED:
+                case STV090x_TSMODE_DVBCI:
+                default:
+                        speed = state->internal->mclk /
+                                (state->config->ts2_clk / 4);
+                        if (speed < 0x08)
+                                speed = 0x08;
+                        if (speed > 0xFF)
+                                speed = 0xFF;
+                        break;
+                case STV090x_TSMODE_SERIAL_PUNCTURED:
+                case STV090x_TSMODE_SERIAL_CONTINUOUS:
+                        speed = state->internal->mclk /
+                                (state->config->ts2_clk / 32);
+                        if (speed < 0x20)
+                                speed = 0x20;
+                        if (speed > 0xFF)
+                                speed = 0xFF;
+                        break;
+                }
+                reg = stv090x_read_reg(state, STV090x_P2_TSCFGM);
+                STV090x_SETFIELD_Px(reg, TSFIFO_MANSPEED_FIELD, 3);
+                if (stv090x_write_reg(state, STV090x_P2_TSCFGM, reg) < 0)
+                        goto err;
+                if (stv090x_write_reg(state, STV090x_P2_TSSPEED, speed) < 0)
+                        goto err;
+        }
+
         reg = stv090x_read_reg(state, STV090x_P2_TSCFGH);
         STV090x_SETFIELD_Px(reg, RST_HWARE_FIELD, 0x01);
         if (stv090x_write_reg(state, STV090x_P2_TSCFGH, reg) < 0)
diff --git a/drivers/media/dvb/frontends/stv090x.h b/drivers/media/dvb/frontends/stv090x.h
index e009183ad772..96e3dc758e08 100644
--- a/drivers/media/dvb/frontends/stv090x.h
+++ b/drivers/media/dvb/frontends/stv090x.h
@@ -70,6 +70,8 @@ struct stv090x_config {
 
         u8 ts1_mode;
         u8 ts2_mode;
+        u32 ts1_clk;
+        u32 ts2_clk;
 
         enum stv090x_i2crpt     repeater_level;