diff options
author | José Pekkarinen <jose.pekkarinen@nokia.com> | 2016-04-11 10:41:07 +0300 |
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committer | José Pekkarinen <jose.pekkarinen@nokia.com> | 2016-04-13 08:17:18 +0300 |
commit | e09b41010ba33a20a87472ee821fa407a5b8da36 (patch) | |
tree | d10dc367189862e7ca5c592f033dc3726e1df4e3 /kernel/sound/soc/sh/rcar/mix.c | |
parent | f93b97fd65072de626c074dbe099a1fff05ce060 (diff) |
These changes are the raw update to linux-4.4.6-rt14. Kernel sources
are taken from kernel.org, and rt patch from the rt wiki download page.
During the rebasing, the following patch collided:
Force tick interrupt and get rid of softirq magic(I70131fb85).
Collisions have been removed because its logic was found on the
source already.
Change-Id: I7f57a4081d9deaa0d9ccfc41a6c8daccdee3b769
Signed-off-by: José Pekkarinen <jose.pekkarinen@nokia.com>
Diffstat (limited to 'kernel/sound/soc/sh/rcar/mix.c')
-rw-r--r-- | kernel/sound/soc/sh/rcar/mix.c | 198 |
1 files changed, 198 insertions, 0 deletions
diff --git a/kernel/sound/soc/sh/rcar/mix.c b/kernel/sound/soc/sh/rcar/mix.c new file mode 100644 index 000000000..953dd0be9 --- /dev/null +++ b/kernel/sound/soc/sh/rcar/mix.c @@ -0,0 +1,198 @@ +/* + * mix.c + * + * Copyright (c) 2015 Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ +#include "rsnd.h" + +#define MIX_NAME_SIZE 16 +#define MIX_NAME "mix" + +struct rsnd_mix { + struct rsnd_mix_platform_info *info; /* rcar_snd.h */ + struct rsnd_mod mod; +}; + +#define rsnd_mix_nr(priv) ((priv)->mix_nr) +#define for_each_rsnd_mix(pos, priv, i) \ + for ((i) = 0; \ + ((i) < rsnd_mix_nr(priv)) && \ + ((pos) = (struct rsnd_mix *)(priv)->mix + i); \ + i++) + + +static void rsnd_mix_soft_reset(struct rsnd_mod *mod) +{ + rsnd_mod_write(mod, MIX_SWRSR, 0); + rsnd_mod_write(mod, MIX_SWRSR, 1); +} + +#define rsnd_mix_initialize_lock(mod) __rsnd_mix_initialize_lock(mod, 1) +#define rsnd_mix_initialize_unlock(mod) __rsnd_mix_initialize_lock(mod, 0) +static void __rsnd_mix_initialize_lock(struct rsnd_mod *mod, u32 enable) +{ + rsnd_mod_write(mod, MIX_MIXIR, enable); +} + +static void rsnd_mix_volume_update(struct rsnd_dai_stream *io, + struct rsnd_mod *mod) +{ + + /* Disable MIX dB setting */ + rsnd_mod_write(mod, MIX_MDBER, 0); + + rsnd_mod_write(mod, MIX_MDBAR, 0); + rsnd_mod_write(mod, MIX_MDBBR, 0); + rsnd_mod_write(mod, MIX_MDBCR, 0); + rsnd_mod_write(mod, MIX_MDBDR, 0); + + /* Enable MIX dB setting */ + rsnd_mod_write(mod, MIX_MDBER, 1); +} + +static int rsnd_mix_init(struct rsnd_mod *mod, + struct rsnd_dai_stream *io, + struct rsnd_priv *priv) +{ + rsnd_mod_power_on(mod); + + rsnd_mix_soft_reset(mod); + + rsnd_mix_initialize_lock(mod); + + rsnd_mod_write(mod, MIX_ADINR, rsnd_get_adinr_chan(mod, io)); + + rsnd_path_parse(priv, io); + + /* volume step */ + rsnd_mod_write(mod, MIX_MIXMR, 0); + rsnd_mod_write(mod, MIX_MVPDR, 0); + + rsnd_mix_volume_update(io, mod); + + rsnd_mix_initialize_unlock(mod); + + return 0; +} + +static int rsnd_mix_quit(struct rsnd_mod *mod, + struct rsnd_dai_stream *io, + struct rsnd_priv *priv) +{ + rsnd_mod_power_off(mod); + + return 0; +} + +static struct rsnd_mod_ops rsnd_mix_ops = { + .name = MIX_NAME, + .init = rsnd_mix_init, + .quit = rsnd_mix_quit, +}; + +struct rsnd_mod *rsnd_mix_mod_get(struct rsnd_priv *priv, int id) +{ + if (WARN_ON(id < 0 || id >= rsnd_mix_nr(priv))) + id = 0; + + return rsnd_mod_get((struct rsnd_mix *)(priv->mix) + id); +} + +static void rsnd_of_parse_mix(struct platform_device *pdev, + const struct rsnd_of_data *of_data, + struct rsnd_priv *priv) +{ + struct device_node *node; + struct rsnd_mix_platform_info *mix_info; + struct rcar_snd_info *info = rsnd_priv_to_info(priv); + struct device *dev = &pdev->dev; + int nr; + + if (!of_data) + return; + + node = of_get_child_by_name(dev->of_node, "rcar_sound,mix"); + if (!node) + return; + + nr = of_get_child_count(node); + if (!nr) + goto rsnd_of_parse_mix_end; + + mix_info = devm_kzalloc(dev, + sizeof(struct rsnd_mix_platform_info) * nr, + GFP_KERNEL); + if (!mix_info) { + dev_err(dev, "mix info allocation error\n"); + goto rsnd_of_parse_mix_end; + } + + info->mix_info = mix_info; + info->mix_info_nr = nr; + +rsnd_of_parse_mix_end: + of_node_put(node); + +} + +int rsnd_mix_probe(struct platform_device *pdev, + const struct rsnd_of_data *of_data, + struct rsnd_priv *priv) +{ + struct rcar_snd_info *info = rsnd_priv_to_info(priv); + struct device *dev = rsnd_priv_to_dev(priv); + struct rsnd_mix *mix; + struct clk *clk; + char name[MIX_NAME_SIZE]; + int i, nr, ret; + + /* This driver doesn't support Gen1 at this point */ + if (rsnd_is_gen1(priv)) + return 0; + + rsnd_of_parse_mix(pdev, of_data, priv); + + nr = info->mix_info_nr; + if (!nr) + return 0; + + mix = devm_kzalloc(dev, sizeof(*mix) * nr, GFP_KERNEL); + if (!mix) + return -ENOMEM; + + priv->mix_nr = nr; + priv->mix = mix; + + for_each_rsnd_mix(mix, priv, i) { + snprintf(name, MIX_NAME_SIZE, "%s.%d", + MIX_NAME, i); + + clk = devm_clk_get(dev, name); + if (IS_ERR(clk)) + return PTR_ERR(clk); + + mix->info = &info->mix_info[i]; + + ret = rsnd_mod_init(priv, rsnd_mod_get(mix), &rsnd_mix_ops, + clk, RSND_MOD_MIX, i); + if (ret) + return ret; + } + + return 0; +} + +void rsnd_mix_remove(struct platform_device *pdev, + struct rsnd_priv *priv) +{ + struct rsnd_mix *mix; + int i; + + for_each_rsnd_mix(mix, priv, i) { + rsnd_mod_quit(rsnd_mod_get(mix)); + } +} |