/* * Shared helper functions for devices from the ADAU family * * Copyright 2011-2016 Analog Devices Inc. * Author: Lars-Peter Clausen * * Licensed under the GPL-2 or later. */ #include #include #include #include "adau-utils.h" int adau_calc_pll_cfg(unsigned int freq_in, unsigned int freq_out, uint8_t regs[5]) { unsigned int r, n, m, i, j; unsigned int div; if (!freq_out) { r = 0; n = 0; m = 0; div = 0; } else { if (freq_out % freq_in != 0) { div = DIV_ROUND_UP(freq_in, 13500000); freq_in /= div; r = freq_out / freq_in; i = freq_out % freq_in; j = gcd(i, freq_in); n = i / j; m = freq_in / j; div--; } else { r = freq_out / freq_in; n = 0; m = 0; div = 0; } if (n > 0xffff || m > 0xffff || div > 3 || r > 8 || r < 2) return -EINVAL; } regs[0] = m >> 8; regs[1] = m & 0xff; regs[2] = n >> 8; regs[3] = n & 0xff; regs[4] = (r << 3) | (div << 1); if (m != 0) regs[4] |= 1; /* Fractional mode */ return 0; } EXPORT_SYMBOL_GPL(adau_calc_pll_cfg); MODULE_DESCRIPTION("ASoC ADAU audio CODECs shared helper functions"); MODULE_AUTHOR("Lars-Peter Clausen "); MODULE_LICENSE("GPL v2"); lue='packet-loop-back'>packet-loop-back net-next plumbingsTobias Klauser
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authorFeng <fgao@ikuai8.com>2017-01-20 21:40:43 +0800
committerPablo Neira Ayuso <pablo@netfilter.org>2017-02-02 14:30:19 +0100
commit10435c1192d06bdb0bac7666452d8219d7e7c477 (patch)
tree93b76419142fe17b1d162d062c663297a3e8a965 /sound/pci/aw2
parent1a28ad74ebd8f9d3c7eae0d781f72a6d30545e17 (diff)
netfilter: nf_tables: Eliminate duplicated code in nf_tables_table_enable()
If something fails in nf_tables_table_enable(), it unregisters the chains. But the rollback code is the same as nf_tables_table_disable() almostly, except there is one counter check. Now create one wrapper function to eliminate the duplicated codes. Signed-off-by: Feng <fgao@ikuai8.com> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Diffstat (limited to 'sound/pci/aw2')