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>

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)

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;