1 files changed, 75 insertions, 201 deletions

diff --git a/drivers/gpu/drm/amd/display/dc/basics/fixpt31_32.c b/drivers/gpu/drm/amd/display/dc/basics/fixpt31_32.c
index 7191c3213743..e61dd97d0928 100644
--- a/drivers/gpu/drm/amd/display/dc/basics/fixpt31_32.c
+++ b/drivers/gpu/drm/amd/display/dc/basics/fixpt31_32.c
@@ -64,9 +64,7 @@ static inline unsigned long long complete_integer_division_u64(
 #define GET_FRACTIONAL_PART(x) \
 	(FRACTIONAL_PART_MASK & (x))
 
-struct fixed31_32 dal_fixed31_32_from_fraction(
-	long long numerator,
-	long long denominator)
+struct fixed31_32 dc_fixpt_from_fraction(long long numerator, long long denominator)
 {
 	struct fixed31_32 res;
 
@@ -118,63 +116,7 @@ struct fixed31_32 dal_fixed31_32_from_fraction(
 	return res;
 }
 
-struct fixed31_32 dal_fixed31_32_from_int_nonconst(
-	long long arg)
-{
-	struct fixed31_32 res;
-
-	ASSERT((LONG_MIN <= arg) && (arg <= LONG_MAX));
-
-	res.value = arg << FIXED31_32_BITS_PER_FRACTIONAL_PART;
-
-	return res;
-}
-
-struct fixed31_32 dal_fixed31_32_shl(
-	struct fixed31_32 arg,
-	unsigned char shift)
-{
-	struct fixed31_32 res;
-
-	ASSERT(((arg.value >= 0) && (arg.value <= LLONG_MAX >> shift)) ||
-		((arg.value < 0) && (arg.value >= LLONG_MIN >> shift)));
-
-	res.value = arg.value << shift;
-
-	return res;
-}
-
-struct fixed31_32 dal_fixed31_32_add(
-	struct fixed31_32 arg1,
-	struct fixed31_32 arg2)
-{
-	struct fixed31_32 res;
-
-	ASSERT(((arg1.value >= 0) && (LLONG_MAX - arg1.value >= arg2.value)) ||
-		((arg1.value < 0) && (LLONG_MIN - arg1.value <= arg2.value)));
-
-	res.value = arg1.value + arg2.value;
-
-	return res;
-}
-
-struct fixed31_32 dal_fixed31_32_sub(
-	struct fixed31_32 arg1,
-	struct fixed31_32 arg2)
-{
-	struct fixed31_32 res;
-
-	ASSERT(((arg2.value >= 0) && (LLONG_MIN + arg2.value <= arg1.value)) ||
-		((arg2.value < 0) && (LLONG_MAX + arg2.value >= arg1.value)));
-
-	res.value = arg1.value - arg2.value;
-
-	return res;
-}
-
-struct fixed31_32 dal_fixed31_32_mul(
-	struct fixed31_32 arg1,
-	struct fixed31_32 arg2)
+struct fixed31_32 dc_fixpt_mul(struct fixed31_32 arg1, struct fixed31_32 arg2)
 {
 	struct fixed31_32 res;
 
@@ -213,7 +155,7 @@ struct fixed31_32 dal_fixed31_32_mul(
 	tmp = arg1_fra * arg2_fra;
 
 	tmp = (tmp >> FIXED31_32_BITS_PER_FRACTIONAL_PART) +
-		(tmp >= (unsigned long long)dal_fixed31_32_half.value);
+		(tmp >= (unsigned long long)dc_fixpt_half.value);
 
 	ASSERT(tmp <= (unsigned long long)(LLONG_MAX - res.value));
 
@@ -225,8 +167,7 @@ struct fixed31_32 dal_fixed31_32_mul(
 	return res;
 }
 
-struct fixed31_32 dal_fixed31_32_sqr(
-	struct fixed31_32 arg)
+struct fixed31_32 dc_fixpt_sqr(struct fixed31_32 arg)
 {
 	struct fixed31_32 res;
 
@@ -257,7 +198,7 @@ struct fixed31_32 dal_fixed31_32_sqr(
 	tmp = arg_fra * arg_fra;
 
 	tmp = (tmp >> FIXED31_32_BITS_PER_FRACTIONAL_PART) +
-		(tmp >= (unsigned long long)dal_fixed31_32_half.value);
+		(tmp >= (unsigned long long)dc_fixpt_half.value);
 
 	ASSERT(tmp <= (unsigned long long)(LLONG_MAX - res.value));
 
@@ -266,8 +207,7 @@ struct fixed31_32 dal_fixed31_32_sqr(
 	return res;
 }
 
-struct fixed31_32 dal_fixed31_32_recip(
-	struct fixed31_32 arg)
+struct fixed31_32 dc_fixpt_recip(struct fixed31_32 arg)
 {
 	/*
 	 * @note
@@ -276,41 +216,40 @@ struct fixed31_32 dal_fixed31_32_recip(
 
 	ASSERT(arg.value);
 
-	return dal_fixed31_32_from_fraction(
-		dal_fixed31_32_one.value,
+	return dc_fixpt_from_fraction(
+		dc_fixpt_one.value,
 		arg.value);
 }
 
-struct fixed31_32 dal_fixed31_32_sinc(
-	struct fixed31_32 arg)
+struct fixed31_32 dc_fixpt_sinc(struct fixed31_32 arg)
 {
 	struct fixed31_32 square;
 
-	struct fixed31_32 res = dal_fixed31_32_one;
+	struct fixed31_32 res = dc_fixpt_one;
 
 	int n = 27;
 
 	struct fixed31_32 arg_norm = arg;
 
-	if (dal_fixed31_32_le(
-		dal_fixed31_32_two_pi,
-		dal_fixed31_32_abs(arg))) {
-		arg_norm = dal_fixed31_32_sub(
+	if (dc_fixpt_le(
+		dc_fixpt_two_pi,
+		dc_fixpt_abs(arg))) {
+		arg_norm = dc_fixpt_sub(
 			arg_norm,
-			dal_fixed31_32_mul_int(
-				dal_fixed31_32_two_pi,
+			dc_fixpt_mul_int(
+				dc_fixpt_two_pi,
 				(int)div64_s64(
 					arg_norm.value,
-					dal_fixed31_32_two_pi.value)));
+					dc_fixpt_two_pi.value)));
 	}
 
-	square = dal_fixed31_32_sqr(arg_norm);
+	square = dc_fixpt_sqr(arg_norm);
 
 	do {
-		res = dal_fixed31_32_sub(
-			dal_fixed31_32_one,
-			dal_fixed31_32_div_int(
-				dal_fixed31_32_mul(
+		res = dc_fixpt_sub(
+			dc_fixpt_one,
+			dc_fixpt_div_int(
+				dc_fixpt_mul(
 					square,
 					res),
 				n * (n - 1)));
@@ -319,37 +258,35 @@ struct fixed31_32 dal_fixed31_32_sinc(
 	} while (n > 2);
 
 	if (arg.value != arg_norm.value)
-		res = dal_fixed31_32_div(
-			dal_fixed31_32_mul(res, arg_norm),
+		res = dc_fixpt_div(
+			dc_fixpt_mul(res, arg_norm),
 			arg);
 
 	return res;
 }
 
-struct fixed31_32 dal_fixed31_32_sin(
-	struct fixed31_32 arg)
+struct fixed31_32 dc_fixpt_sin(struct fixed31_32 arg)
 {
-	return dal_fixed31_32_mul(
+	return dc_fixpt_mul(
 		arg,
-		dal_fixed31_32_sinc(arg));
+		dc_fixpt_sinc(arg));
 }
 
-struct fixed31_32 dal_fixed31_32_cos(
-	struct fixed31_32 arg)
+struct fixed31_32 dc_fixpt_cos(struct fixed31_32 arg)
 {
 	/* TODO implement argument normalization */
 
-	const struct fixed31_32 square = dal_fixed31_32_sqr(arg);
+	const struct fixed31_32 square = dc_fixpt_sqr(arg);
 
-	struct fixed31_32 res = dal_fixed31_32_one;
+	struct fixed31_32 res = dc_fixpt_one;
 
 	int n = 26;
 
 	do {
-		res = dal_fixed31_32_sub(
-			dal_fixed31_32_one,
-			dal_fixed31_32_div_int(
-				dal_fixed31_32_mul(
+		res = dc_fixpt_sub(
+			dc_fixpt_one,
+			dc_fixpt_div_int(
+				dc_fixpt_mul(
 					square,
 					res),
 				n * (n - 1)));
@@ -367,37 +304,35 @@ struct fixed31_32 dal_fixed31_32_cos(
  *
  * Calculated as Taylor series.
  */
-static struct fixed31_32 fixed31_32_exp_from_taylor_series(
-	struct fixed31_32 arg)
+static struct fixed31_32 fixed31_32_exp_from_taylor_series(struct fixed31_32 arg)
 {
 	unsigned int n = 9;
 
-	struct fixed31_32 res = dal_fixed31_32_from_fraction(
+	struct fixed31_32 res = dc_fixpt_from_fraction(
 		n + 2,
 		n + 1);
 	/* TODO find correct res */
 
-	ASSERT(dal_fixed31_32_lt(arg, dal_fixed31_32_one));
+	ASSERT(dc_fixpt_lt(arg, dc_fixpt_one));
 
 	do
-		res = dal_fixed31_32_add(
-			dal_fixed31_32_one,
-			dal_fixed31_32_div_int(
-				dal_fixed31_32_mul(
+		res = dc_fixpt_add(
+			dc_fixpt_one,
+			dc_fixpt_div_int(
+				dc_fixpt_mul(
 					arg,
 					res),
 				n));
 	while (--n != 1);
 
-	return dal_fixed31_32_add(
-		dal_fixed31_32_one,
-		dal_fixed31_32_mul(
+	return dc_fixpt_add(
+		dc_fixpt_one,
+		dc_fixpt_mul(
 			arg,
 			res));
 }
 
-struct fixed31_32 dal_fixed31_32_exp(
-	struct fixed31_32 arg)
+struct fixed31_32 dc_fixpt_exp(struct fixed31_32 arg)
 {
 	/*
 	 * @brief
@@ -406,44 +341,43 @@ struct fixed31_32 dal_fixed31_32_exp(
 	 * where m = round(x / ln(2)), r = x - m * ln(2)
 	 */
 
-	if (dal_fixed31_32_le(
-		dal_fixed31_32_ln2_div_2,
-		dal_fixed31_32_abs(arg))) {
-		int m = dal_fixed31_32_round(
-			dal_fixed31_32_div(
+	if (dc_fixpt_le(
+		dc_fixpt_ln2_div_2,
+		dc_fixpt_abs(arg))) {
+		int m = dc_fixpt_round(
+			dc_fixpt_div(
 				arg,
-				dal_fixed31_32_ln2));
+				dc_fixpt_ln2));
 
-		struct fixed31_32 r = dal_fixed31_32_sub(
+		struct fixed31_32 r = dc_fixpt_sub(
 			arg,
-			dal_fixed31_32_mul_int(
-				dal_fixed31_32_ln2,
+			dc_fixpt_mul_int(
+				dc_fixpt_ln2,
 				m));
 
 		ASSERT(m != 0);
 
-		ASSERT(dal_fixed31_32_lt(
-			dal_fixed31_32_abs(r),
-			dal_fixed31_32_one));
+		ASSERT(dc_fixpt_lt(
+			dc_fixpt_abs(r),
+			dc_fixpt_one));
 
 		if (m > 0)
-			return dal_fixed31_32_shl(
+			return dc_fixpt_shl(
 				fixed31_32_exp_from_taylor_series(r),
 				(unsigned char)m);
 		else
-			return dal_fixed31_32_div_int(
+			return dc_fixpt_div_int(
 				fixed31_32_exp_from_taylor_series(r),
 				1LL << -m);
 	} else if (arg.value != 0)
 		return fixed31_32_exp_from_taylor_series(arg);
 	else
-		return dal_fixed31_32_one;
+		return dc_fixpt_one;
 }
 
-struct fixed31_32 dal_fixed31_32_log(
-	struct fixed31_32 arg)
+struct fixed31_32 dc_fixpt_log(struct fixed31_32 arg)
 {
-	struct fixed31_32 res = dal_fixed31_32_neg(dal_fixed31_32_one);
+	struct fixed31_32 res = dc_fixpt_neg(dc_fixpt_one);
 	/* TODO improve 1st estimation */
 
 	struct fixed31_32 error;
@@ -453,15 +387,15 @@ struct fixed31_32 dal_fixed31_32_log(
 	/* TODO if arg is zero, return -INF */
 
 	do {
-		struct fixed31_32 res1 = dal_fixed31_32_add(
-			dal_fixed31_32_sub(
+		struct fixed31_32 res1 = dc_fixpt_add(
+			dc_fixpt_sub(
 				res,
-				dal_fixed31_32_one),
-			dal_fixed31_32_div(
+				dc_fixpt_one),
+			dc_fixpt_div(
 				arg,
-				dal_fixed31_32_exp(res)));
+				dc_fixpt_exp(res)));
 
-		error = dal_fixed31_32_sub(
+		error = dc_fixpt_sub(
 			res,
 			res1);
 
@@ -472,66 +406,11 @@ struct fixed31_32 dal_fixed31_32_log(
 	return res;
 }
 
-struct fixed31_32 dal_fixed31_32_pow(
-	struct fixed31_32 arg1,
-	struct fixed31_32 arg2)
-{
-	return dal_fixed31_32_exp(
-		dal_fixed31_32_mul(
-			dal_fixed31_32_log(arg1),
-			arg2));
-}
-
-int dal_fixed31_32_floor(
-	struct fixed31_32 arg)
-{
-	unsigned long long arg_value = abs_i64(arg.value);
-
-	if (arg.value >= 0)
-		return (int)GET_INTEGER_PART(arg_value);
-	else
-		return -(int)GET_INTEGER_PART(arg_value);
-}
-
-int dal_fixed31_32_round(
-	struct fixed31_32 arg)
-{
-	unsigned long long arg_value = abs_i64(arg.value);
-
-	const long long summand = dal_fixed31_32_half.value;
-
-	ASSERT(LLONG_MAX - (long long)arg_value >= summand);
-
-	arg_value += summand;
-
-	if (arg.value >= 0)
-		return (int)GET_INTEGER_PART(arg_value);
-	else
-		return -(int)GET_INTEGER_PART(arg_value);
-}
-
-int dal_fixed31_32_ceil(
-	struct fixed31_32 arg)
-{
-	unsigned long long arg_value = abs_i64(arg.value);
-
-	const long long summand = dal_fixed31_32_one.value -
-		dal_fixed31_32_epsilon.value;
-
-	ASSERT(LLONG_MAX - (long long)arg_value >= summand);
-
-	arg_value += summand;
-
-	if (arg.value >= 0)
-		return (int)GET_INTEGER_PART(arg_value);
-	else
-		return -(int)GET_INTEGER_PART(arg_value);
-}
 
 /* this function is a generic helper to translate fixed point value to
  * specified integer format that will consist of integer_bits integer part and
  * fractional_bits fractional part. For example it is used in
- * dal_fixed31_32_u2d19 to receive 2 bits integer part and 19 bits fractional
+ * dc_fixpt_u2d19 to receive 2 bits integer part and 19 bits fractional
  * part in 32 bits. It is used in hw programming (scaler)
  */
 
@@ -570,35 +449,30 @@ static inline unsigned int clamp_ux_dy(
 		return min_clamp;
 }
 
-unsigned int dal_fixed31_32_u2d19(
-	struct fixed31_32 arg)
+unsigned int dc_fixpt_u2d19(struct fixed31_32 arg)
 {
 	return ux_dy(arg.value, 2, 19);
 }
 
-unsigned int dal_fixed31_32_u0d19(
-	struct fixed31_32 arg)
+unsigned int dc_fixpt_u0d19(struct fixed31_32 arg)
 {
 	return ux_dy(arg.value, 0, 19);
 }
 
-unsigned int dal_fixed31_32_clamp_u0d14(
-	struct fixed31_32 arg)
+unsigned int dc_fixpt_clamp_u0d14(struct fixed31_32 arg)
 {
 	return clamp_ux_dy(arg.value, 0, 14, 1);
 }
 
-unsigned int dal_fixed31_32_clamp_u0d10(
-	struct fixed31_32 arg)
+unsigned int dc_fixpt_clamp_u0d10(struct fixed31_32 arg)
 {
 	return clamp_ux_dy(arg.value, 0, 10, 1);
 }
 
-int dal_fixed31_32_s4d19(
-	struct fixed31_32 arg)
+int dc_fixpt_s4d19(struct fixed31_32 arg)
 {
 	if (arg.value < 0)
-		return -(int)ux_dy(dal_fixed31_32_abs(arg).value, 4, 19);
+		return -(int)ux_dy(dc_fixpt_abs(arg).value, 4, 19);
 	else
 		return ux_dy(arg.value, 4, 19);
 }