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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-08-07 13:11:27 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-08-07 13:11:27 +0000 |
commit | 34996e42f82bfd60bc2c191e5cae3c6ab233ec6c (patch) | |
tree | 62db60558cbf089714b48daeabca82bf2b20b20e /drivers/media/v4l2-core/v4l2-common.c | |
parent | Adding debian version 6.8.12-1. (diff) | |
download | linux-34996e42f82bfd60bc2c191e5cae3c6ab233ec6c.tar.xz linux-34996e42f82bfd60bc2c191e5cae3c6ab233ec6c.zip |
Merging upstream version 6.9.7.
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'drivers/media/v4l2-core/v4l2-common.c')
-rw-r--r-- | drivers/media/v4l2-core/v4l2-common.c | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/drivers/media/v4l2-core/v4l2-common.c b/drivers/media/v4l2-core/v4l2-common.c index 273d83de2a..d34d210908 100644 --- a/drivers/media/v4l2-core/v4l2-common.c +++ b/drivers/media/v4l2-core/v4l2-common.c @@ -585,3 +585,50 @@ u32 v4l2_fraction_to_interval(u32 numerator, u32 denominator) return denominator ? numerator * multiplier / denominator : 0; } EXPORT_SYMBOL_GPL(v4l2_fraction_to_interval); + +int v4l2_link_freq_to_bitmap(struct device *dev, const u64 *fw_link_freqs, + unsigned int num_of_fw_link_freqs, + const s64 *driver_link_freqs, + unsigned int num_of_driver_link_freqs, + unsigned long *bitmap) +{ + unsigned int i; + + *bitmap = 0; + + if (!num_of_fw_link_freqs) { + dev_err(dev, "no link frequencies in firmware\n"); + return -ENODATA; + } + + for (i = 0; i < num_of_fw_link_freqs; i++) { + unsigned int j; + + for (j = 0; j < num_of_driver_link_freqs; j++) { + if (fw_link_freqs[i] != driver_link_freqs[j]) + continue; + + dev_dbg(dev, "enabling link frequency %lld Hz\n", + driver_link_freqs[j]); + *bitmap |= BIT(j); + break; + } + } + + if (!*bitmap) { + dev_err(dev, "no matching link frequencies found\n"); + + dev_dbg(dev, "specified in firmware:\n"); + for (i = 0; i < num_of_fw_link_freqs; i++) + dev_dbg(dev, "\t%llu Hz\n", fw_link_freqs[i]); + + dev_dbg(dev, "driver supported:\n"); + for (i = 0; i < num_of_driver_link_freqs; i++) + dev_dbg(dev, "\t%lld Hz\n", driver_link_freqs[i]); + + return -ENOENT; + } + + return 0; +} +EXPORT_SYMBOL_GPL(v4l2_link_freq_to_bitmap); |