V4L/DVB (6926): tda18271: consolidate table lookup functions

Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>

3 files changed, 106 insertions, 74 deletions

diff --git a/drivers/media/dvb/frontends/tda18271-fe.c b/drivers/media/dvb/frontends/tda18271-fe.c
index 4526def2d42f..72e256ebeb0f 100644
--- a/drivers/media/dvb/frontends/tda18271-fe.c
+++ b/drivers/media/dvb/frontends/tda18271-fe.c
@@ -360,7 +360,9 @@ static int tda18271_calc_main_pll(struct dvb_frontend *fe, u32 freq)
 	u8 d, pd;
 	u32 div;
 
-	tda18271_lookup_main_pll(&freq, &pd, &d);
+	int ret = tda18271_lookup_pll_map(MAIN_PLL, &freq, &pd, &d);
+	if (ret < 0)
+		goto fail;
 
 	regs[R_MPD]   = (0x77 & pd);
 
@@ -378,8 +380,8 @@ static int tda18271_calc_main_pll(struct dvb_frontend *fe, u32 freq)
 	regs[R_MD1]   = 0x7f & (div >> 16);
 	regs[R_MD2]   = 0xff & (div >> 8);
 	regs[R_MD3]   = 0xff & div;
-
-	return 0;
+fail:
+	return ret;
 }
 
 static int tda18271_calc_cal_pll(struct dvb_frontend *fe, u32 freq)
@@ -390,7 +392,9 @@ static int tda18271_calc_cal_pll(struct dvb_frontend *fe, u32 freq)
 	u8 d, pd;
 	u32 div;
 
-	tda18271_lookup_cal_pll(&freq, &pd, &d);
+	int ret = tda18271_lookup_pll_map(CAL_PLL, &freq, &pd, &d);
+	if (ret < 0)
+		goto fail;
 
 	regs[R_CPD]   = pd;
 
@@ -399,8 +403,8 @@ static int tda18271_calc_cal_pll(struct dvb_frontend *fe, u32 freq)
 	regs[R_CD1]   = 0x7f & (div >> 16);
 	regs[R_CD2]   = 0xff & (div >> 8);
 	regs[R_CD3]   = 0xff & div;
-
-	return 0;
+fail:
+	return ret;
 }
 
 static int tda18271_tune(struct dvb_frontend *fe,
@@ -418,7 +422,7 @@ static int tda18271_tune(struct dvb_frontend *fe,
 	/* RF tracking filter calibration */
 
 	/* calculate BP_Filter */
-	tda18271_lookup_bp_filter(&freq, &val);
+	tda18271_lookup_map(BP_FILTER, &freq, &val);
 
 	regs[R_EP1]  &= ~0x07; /* clear bp filter bits */
 	regs[R_EP1]  |= val;
@@ -470,20 +474,20 @@ static int tda18271_tune(struct dvb_frontend *fe,
 	msleep(5); /* RF tracking filter calibration initialization */
 
 	/* search for K,M,CO for RF Calibration */
-	tda18271_lookup_km(&freq, &val);
+	tda18271_lookup_map(RF_CAL_KMCO, &freq, &val);
 
 	regs[R_EB13] &= 0x83;
 	regs[R_EB13] |= val;
 	tda18271_write_regs(fe, R_EB13, 1);
 
 	/* search for RF_BAND */
-	tda18271_lookup_rf_band(&freq, &val);
+	tda18271_lookup_map(RF_BAND, &freq, &val);
 
 	regs[R_EP2]  &= ~0xe0; /* clear rf band bits */
 	regs[R_EP2]  |= (val << 5);
 
 	/* search for Gain_Taper */
-	tda18271_lookup_gain_taper(&freq, &val);
+	tda18271_lookup_map(GAIN_TAPER, &freq, &val);
 
 	regs[R_EP2]  &= ~0x1f; /* clear gain taper bits */
 	regs[R_EP2]  |= val;
@@ -511,7 +515,7 @@ static int tda18271_tune(struct dvb_frontend *fe,
 	tda18271_write_regs(fe, R_EP1, 1);
 
 	/* RF tracking filer correction for VHF_Low band */
-	tda18271_lookup_rf_cal(&freq, &val);
+	tda18271_lookup_map(RF_CAL, &freq, &val);
 
 	/* VHF_Low band only */
 	if (val != 0) {
@@ -555,7 +559,7 @@ static int tda18271_tune(struct dvb_frontend *fe,
 	regs[R_EP4]  &= ~0x80; /* turn this bit on only for fm */
 
 	/* image rejection validity EP5[2:0] */
-	tda18271_lookup_ir_measure(&freq, &val);
+	tda18271_lookup_map(IR_MEASURE, &freq, &val);
 
 	regs[R_EP5] &= ~0x07;
 	regs[R_EP5] |= val;
diff --git a/drivers/media/dvb/frontends/tda18271-priv.h b/drivers/media/dvb/frontends/tda18271-priv.h
index 7b9aa9ad53fe..b08bf08aa88f 100644
--- a/drivers/media/dvb/frontends/tda18271-priv.h
+++ b/drivers/media/dvb/frontends/tda18271-priv.h
@@ -104,15 +104,23 @@ extern int tda18271_debug;
 
 /*---------------------------------------------------------------------*/
 
-extern void tda18271_lookup_cal_pll(u32 *freq, u8 *post_div, u8 *div);
-extern void tda18271_lookup_main_pll(u32 *freq, u8 *post_div, u8 *div);
-
-extern void tda18271_lookup_bp_filter(u32 *freq, u8 *val);
-extern void tda18271_lookup_km(u32 *freq, u8 *val);
-extern void tda18271_lookup_rf_band(u32 *freq, u8 *val);
-extern void tda18271_lookup_gain_taper(u32 *freq, u8 *val);
-extern void tda18271_lookup_rf_cal(u32 *freq, u8 *val);
-extern void tda18271_lookup_ir_measure(u32 *freq, u8 *val);
+enum tda18271_map_type {
+	/* tda18271_pll_map */
+	MAIN_PLL,
+	CAL_PLL,
+	/* tda18271_map */
+	RF_CAL,
+	RF_CAL_KMCO,
+	BP_FILTER,
+	RF_BAND,
+	GAIN_TAPER,
+	IR_MEASURE,
+};
+
+extern int tda18271_lookup_pll_map(enum tda18271_map_type map_type,
+				   u32 *freq, u8 *post_div, u8 *div);
+extern int tda18271_lookup_map(enum tda18271_map_type map_type,
+			       u32 *freq, u8 *val);
 
 #endif /* __TDA18271_PRIV_H__ */
 
diff --git a/drivers/media/dvb/frontends/tda18271-tables.c b/drivers/media/dvb/frontends/tda18271-tables.c
index 02b6d2cb9570..8990bef0cf7e 100644
--- a/drivers/media/dvb/frontends/tda18271-tables.c
+++ b/drivers/media/dvb/frontends/tda18271-tables.c
@@ -267,22 +267,33 @@ static struct tda18271_map tda18271_ir_measure[] = {
 
 /*---------------------------------------------------------------------*/
 
-static void tda18271_lookup_map(struct tda18271_map *map,
-				u32 *freq, u8 *val)
+int tda18271_lookup_pll_map(enum tda18271_map_type map_type,
+			    u32 *freq, u8 *post_div, u8 *div)
 {
-	int i = 0;
-	while ((map[i].rfmax * 1000) < *freq) {
-		if (map[i + 1].rfmax == 0)
-			break;
-		i++;
+	struct tda18271_pll_map *map = NULL;
+	unsigned int i = 0;
+	char *map_name;
+
+	switch (map_type) {
+	case MAIN_PLL:
+		map = tda18271_main_pll;
+		map_name = "main_pll";
+		break;
+	case CAL_PLL:
+		map = tda18271_cal_pll;
+		map_name = "cal_pll";
+		break;
+	default:
+		/* we should never get here */
+		map_name = "undefined";
+		break;
+	}
+
+	if (!map) {
+		dbg_info("%s map is not set!\n", map_name);
+		return -EINVAL;
 	}
-	*val = map[i].val;
-}
 
-static void tda18271_lookup_pll_map(struct tda18271_pll_map *map,
-				    u32 *freq, u8 *post_div, u8 *div)
-{
-	int i = 0;
 	while ((map[i].lomax * 1000) < *freq) {
 		if (map[i + 1].lomax == 0)
 			break;
@@ -290,56 +301,65 @@ static void tda18271_lookup_pll_map(struct tda18271_pll_map *map,
 	}
 	*post_div = map[i].pd;
 	*div      = map[i].d;
-}
-
-/*---------------------------------------------------------------------*/
 
-void tda18271_lookup_cal_pll(u32 *freq, u8 *post_div, u8 *div)
-{
-	tda18271_lookup_pll_map(tda18271_cal_pll, freq, post_div, div);
-	dbg_map("post div = 0x%02x, div = 0x%02x\n", *post_div, *div);
-}
+	dbg_map("%s: post div = 0x%02x, div = 0x%02x\n",
+		map_name, *post_div, *div);
 
-void tda18271_lookup_main_pll(u32 *freq, u8 *post_div, u8 *div)
-{
-	tda18271_lookup_pll_map(tda18271_main_pll, freq, post_div, div);
-	dbg_map("post div = 0x%02x, div = 0x%02x\n", *post_div, *div);
+	return 0;
 }
 
-void tda18271_lookup_bp_filter(u32 *freq, u8 *val)
+int tda18271_lookup_map(enum tda18271_map_type map_type, u32 *freq, u8 *val)
 {
-	tda18271_lookup_map(tda18271_bp_filter, freq, val);
-	dbg_map("0x%02x\n", *val);
-}
+	struct tda18271_map *map = NULL;
+	unsigned int i = 0;
+	char *map_name;
 
-void tda18271_lookup_km(u32 *freq, u8 *val)
-{
-	tda18271_lookup_map(tda18271_km, freq, val);
-	dbg_map("0x%02x\n", *val);
-}
+	switch (map_type) {
+	case BP_FILTER:
+		map = tda18271_bp_filter;
+		map_name = "bp_filter";
+		break;
+	case RF_CAL_KMCO:
+		map = tda18271_km;
+		map_name = "km";
+		break;
+	case RF_BAND:
+		map = tda18271_rf_band;
+		map_name = "rf_band";
+		break;
+	case GAIN_TAPER:
+		map = tda18271_gain_taper;
+		map_name = "gain_taper";
+		break;
+	case RF_CAL:
+		map = tda18271_rf_cal;
+		map_name = "rf_cal";
+		break;
+	case IR_MEASURE:
+		map = tda18271_ir_measure;
+		map_name = "ir_measure";
+		break;
+	default:
+		/* we should never get here */
+		map_name = "undefined";
+		break;
+	}
 
-void tda18271_lookup_rf_band(u32 *freq, u8 *val)
-{
-	tda18271_lookup_map(tda18271_rf_band, freq, val);
-	dbg_map("0x%02x\n", *val);
-}
+	if (!map) {
+		dbg_info("%s map is not set!\n", map_name);
+		return -EINVAL;
+	}
 
-void tda18271_lookup_gain_taper(u32 *freq, u8 *val)
-{
-	tda18271_lookup_map(tda18271_gain_taper, freq, val);
-	dbg_map("0x%02x\n", *val);
-}
+	while ((map[i].rfmax * 1000) < *freq) {
+		if (map[i + 1].rfmax == 0)
+			break;
+		i++;
+	}
+	*val = map[i].val;
 
-void tda18271_lookup_rf_cal(u32 *freq, u8 *val)
-{
-	tda18271_lookup_map(tda18271_rf_cal, freq, val);
-	dbg_map("0x%02x\n", *val);
-}
+	dbg_map("%s: 0x%02x\n", map_name, *val);
 
-void tda18271_lookup_ir_measure(u32 *freq, u8 *val)
-{
-	tda18271_lookup_map(tda18271_ir_measure, freq, val);
-	dbg_map("0x%02x\n", *val);
+	return 0;
 }
 
 /*