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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-06-19 21:00:37 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-06-19 21:00:37 +0000 |
commit | 94ac2ab3fff96814d7460a27a0e9d004abbd4128 (patch) | |
tree | 9a4eb8cc234b540b0f4b93363109cdd37a20540b /drivers/gpu/drm/amd/display/dc/basics/conversion.c | |
parent | Adding debian version 6.8.12-1. (diff) | |
download | linux-94ac2ab3fff96814d7460a27a0e9d004abbd4128.tar.xz linux-94ac2ab3fff96814d7460a27a0e9d004abbd4128.zip |
Merging upstream version 6.9.2.
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'drivers/gpu/drm/amd/display/dc/basics/conversion.c')
-rw-r--r-- | drivers/gpu/drm/amd/display/dc/basics/conversion.c | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/basics/conversion.c b/drivers/gpu/drm/amd/display/dc/basics/conversion.c index 1090d23508..bd1f60ecab 100644 --- a/drivers/gpu/drm/amd/display/dc/basics/conversion.c +++ b/drivers/gpu/drm/amd/display/dc/basics/conversion.c @@ -101,6 +101,40 @@ void convert_float_matrix( } } +static struct fixed31_32 int_frac_to_fixed_point(uint16_t arg, + uint8_t integer_bits, + uint8_t fractional_bits) +{ + struct fixed31_32 result; + uint16_t sign_mask = 1 << (fractional_bits + integer_bits); + uint16_t value_mask = sign_mask - 1; + + result.value = (long long)(arg & value_mask) << + (FIXED31_32_BITS_PER_FRACTIONAL_PART - fractional_bits); + + if (arg & sign_mask) + result = dc_fixpt_neg(result); + + return result; +} + +/** + * convert_hw_matrix - converts HW values into fixed31_32 matrix. + * @matrix: fixed point 31.32 matrix + * @reg: array of register values + * @buffer_size: size of the array of register values + * + * Converts HW register spec defined format S2D13 into a fixed-point 31.32 + * matrix. + */ +void convert_hw_matrix(struct fixed31_32 *matrix, + uint16_t *reg, + uint32_t buffer_size) +{ + for (int i = 0; i < buffer_size; ++i) + matrix[i] = int_frac_to_fixed_point(reg[i], 2, 13); +} + static uint32_t find_gcd(uint32_t a, uint32_t b) { uint32_t remainder; |