diff options
Diffstat (limited to '')
-rw-r--r-- | sound/soc/sh/rcar/ctu.c | 393 |
1 files changed, 393 insertions, 0 deletions
diff --git a/sound/soc/sh/rcar/ctu.c b/sound/soc/sh/rcar/ctu.c new file mode 100644 index 0000000000..e39eb2ac7e --- /dev/null +++ b/sound/soc/sh/rcar/ctu.c @@ -0,0 +1,393 @@ +// SPDX-License-Identifier: GPL-2.0 +// +// ctu.c +// +// Copyright (c) 2015 Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> + +#include "rsnd.h" + +#define CTU_NAME_SIZE 16 +#define CTU_NAME "ctu" + +/* + * User needs to setup CTU by amixer, and its settings are + * based on below registers + * + * CTUn_CPMDR : amixser set "CTU Pass" + * CTUn_SV0xR : amixser set "CTU SV0" + * CTUn_SV1xR : amixser set "CTU SV1" + * CTUn_SV2xR : amixser set "CTU SV2" + * CTUn_SV3xR : amixser set "CTU SV3" + * + * [CTU Pass] + * 0000: default + * 0001: Connect input data of channel 0 + * 0010: Connect input data of channel 1 + * 0011: Connect input data of channel 2 + * 0100: Connect input data of channel 3 + * 0101: Connect input data of channel 4 + * 0110: Connect input data of channel 5 + * 0111: Connect input data of channel 6 + * 1000: Connect input data of channel 7 + * 1001: Connect calculated data by scale values of matrix row 0 + * 1010: Connect calculated data by scale values of matrix row 1 + * 1011: Connect calculated data by scale values of matrix row 2 + * 1100: Connect calculated data by scale values of matrix row 3 + * + * [CTU SVx] + * [Output0] = [SV00, SV01, SV02, SV03, SV04, SV05, SV06, SV07] + * [Output1] = [SV10, SV11, SV12, SV13, SV14, SV15, SV16, SV17] + * [Output2] = [SV20, SV21, SV22, SV23, SV24, SV25, SV26, SV27] + * [Output3] = [SV30, SV31, SV32, SV33, SV34, SV35, SV36, SV37] + * [Output4] = [ 0, 0, 0, 0, 0, 0, 0, 0 ] + * [Output5] = [ 0, 0, 0, 0, 0, 0, 0, 0 ] + * [Output6] = [ 0, 0, 0, 0, 0, 0, 0, 0 ] + * [Output7] = [ 0, 0, 0, 0, 0, 0, 0, 0 ] + * + * [SVxx] + * Plus Minus + * value time dB value time dB + * ----------------------------------------------------------------------- + * H'7F_FFFF 2 6 H'80_0000 2 6 + * ... + * H'40_0000 1 0 H'C0_0000 1 0 + * ... + * H'00_0001 2.38 x 10^-7 -132 + * H'00_0000 0 Mute H'FF_FFFF 2.38 x 10^-7 -132 + * + * + * Ex) Input ch -> Output ch + * 1ch -> 0ch + * 0ch -> 1ch + * + * amixer set "CTU Reset" on + * amixer set "CTU Pass" 9,10 + * amixer set "CTU SV0" 0,4194304 + * amixer set "CTU SV1" 4194304,0 + * or + * amixer set "CTU Reset" on + * amixer set "CTU Pass" 2,1 + */ + +struct rsnd_ctu { + struct rsnd_mod mod; + struct rsnd_kctrl_cfg_m pass; + struct rsnd_kctrl_cfg_m sv[4]; + struct rsnd_kctrl_cfg_s reset; + int channels; + u32 flags; +}; + +#define KCTRL_INITIALIZED (1 << 0) + +#define rsnd_ctu_nr(priv) ((priv)->ctu_nr) +#define for_each_rsnd_ctu(pos, priv, i) \ + for ((i) = 0; \ + ((i) < rsnd_ctu_nr(priv)) && \ + ((pos) = (struct rsnd_ctu *)(priv)->ctu + i); \ + i++) + +#define rsnd_mod_to_ctu(_mod) \ + container_of((_mod), struct rsnd_ctu, mod) + +#define rsnd_ctu_get(priv, id) ((struct rsnd_ctu *)(priv->ctu) + id) + +static void rsnd_ctu_activation(struct rsnd_mod *mod) +{ + rsnd_mod_write(mod, CTU_SWRSR, 0); + rsnd_mod_write(mod, CTU_SWRSR, 1); +} + +static void rsnd_ctu_halt(struct rsnd_mod *mod) +{ + rsnd_mod_write(mod, CTU_CTUIR, 1); + rsnd_mod_write(mod, CTU_SWRSR, 0); +} + +static int rsnd_ctu_probe_(struct rsnd_mod *mod, + struct rsnd_dai_stream *io, + struct rsnd_priv *priv) +{ + return rsnd_cmd_attach(io, rsnd_mod_id(mod)); +} + +static void rsnd_ctu_value_init(struct rsnd_dai_stream *io, + struct rsnd_mod *mod) +{ + struct rsnd_ctu *ctu = rsnd_mod_to_ctu(mod); + u32 cpmdr = 0; + u32 scmdr = 0; + int i, j; + + for (i = 0; i < RSND_MAX_CHANNELS; i++) { + u32 val = rsnd_kctrl_valm(ctu->pass, i); + + cpmdr |= val << (28 - (i * 4)); + + if ((val > 0x8) && (scmdr < (val - 0x8))) + scmdr = val - 0x8; + } + + rsnd_mod_write(mod, CTU_CTUIR, 1); + + rsnd_mod_write(mod, CTU_ADINR, rsnd_runtime_channel_original(io)); + + rsnd_mod_write(mod, CTU_CPMDR, cpmdr); + + rsnd_mod_write(mod, CTU_SCMDR, scmdr); + + for (i = 0; i < 4; i++) { + + if (i >= scmdr) + break; + + for (j = 0; j < RSND_MAX_CHANNELS; j++) + rsnd_mod_write(mod, CTU_SVxxR(i, j), rsnd_kctrl_valm(ctu->sv[i], j)); + } + + rsnd_mod_write(mod, CTU_CTUIR, 0); +} + +static void rsnd_ctu_value_reset(struct rsnd_dai_stream *io, + struct rsnd_mod *mod) +{ + struct rsnd_ctu *ctu = rsnd_mod_to_ctu(mod); + int i; + + if (!rsnd_kctrl_vals(ctu->reset)) + return; + + for (i = 0; i < RSND_MAX_CHANNELS; i++) { + rsnd_kctrl_valm(ctu->pass, i) = 0; + rsnd_kctrl_valm(ctu->sv[0], i) = 0; + rsnd_kctrl_valm(ctu->sv[1], i) = 0; + rsnd_kctrl_valm(ctu->sv[2], i) = 0; + rsnd_kctrl_valm(ctu->sv[3], i) = 0; + } + rsnd_kctrl_vals(ctu->reset) = 0; +} + +static int rsnd_ctu_init(struct rsnd_mod *mod, + struct rsnd_dai_stream *io, + struct rsnd_priv *priv) +{ + int ret; + + ret = rsnd_mod_power_on(mod); + if (ret < 0) + return ret; + + rsnd_ctu_activation(mod); + + rsnd_ctu_value_init(io, mod); + + return 0; +} + +static int rsnd_ctu_quit(struct rsnd_mod *mod, + struct rsnd_dai_stream *io, + struct rsnd_priv *priv) +{ + rsnd_ctu_halt(mod); + + rsnd_mod_power_off(mod); + + return 0; +} + +static int rsnd_ctu_pcm_new(struct rsnd_mod *mod, + struct rsnd_dai_stream *io, + struct snd_soc_pcm_runtime *rtd) +{ + struct rsnd_ctu *ctu = rsnd_mod_to_ctu(mod); + int ret; + + if (rsnd_flags_has(ctu, KCTRL_INITIALIZED)) + return 0; + + /* CTU Pass */ + ret = rsnd_kctrl_new_m(mod, io, rtd, "CTU Pass", + rsnd_kctrl_accept_anytime, + NULL, + &ctu->pass, RSND_MAX_CHANNELS, + 0xC); + if (ret < 0) + return ret; + + /* ROW0 */ + ret = rsnd_kctrl_new_m(mod, io, rtd, "CTU SV0", + rsnd_kctrl_accept_anytime, + NULL, + &ctu->sv[0], RSND_MAX_CHANNELS, + 0x00FFFFFF); + if (ret < 0) + return ret; + + /* ROW1 */ + ret = rsnd_kctrl_new_m(mod, io, rtd, "CTU SV1", + rsnd_kctrl_accept_anytime, + NULL, + &ctu->sv[1], RSND_MAX_CHANNELS, + 0x00FFFFFF); + if (ret < 0) + return ret; + + /* ROW2 */ + ret = rsnd_kctrl_new_m(mod, io, rtd, "CTU SV2", + rsnd_kctrl_accept_anytime, + NULL, + &ctu->sv[2], RSND_MAX_CHANNELS, + 0x00FFFFFF); + if (ret < 0) + return ret; + + /* ROW3 */ + ret = rsnd_kctrl_new_m(mod, io, rtd, "CTU SV3", + rsnd_kctrl_accept_anytime, + NULL, + &ctu->sv[3], RSND_MAX_CHANNELS, + 0x00FFFFFF); + if (ret < 0) + return ret; + + /* Reset */ + ret = rsnd_kctrl_new_s(mod, io, rtd, "CTU Reset", + rsnd_kctrl_accept_anytime, + rsnd_ctu_value_reset, + &ctu->reset, 1); + + rsnd_flags_set(ctu, KCTRL_INITIALIZED); + + return ret; +} + +static int rsnd_ctu_id(struct rsnd_mod *mod) +{ + /* + * ctu00: -> 0, ctu01: -> 0, ctu02: -> 0, ctu03: -> 0 + * ctu10: -> 1, ctu11: -> 1, ctu12: -> 1, ctu13: -> 1 + */ + return mod->id / 4; +} + +static int rsnd_ctu_id_sub(struct rsnd_mod *mod) +{ + /* + * ctu00: -> 0, ctu01: -> 1, ctu02: -> 2, ctu03: -> 3 + * ctu10: -> 0, ctu11: -> 1, ctu12: -> 2, ctu13: -> 3 + */ + return mod->id % 4; +} + +#ifdef CONFIG_DEBUG_FS +static void rsnd_ctu_debug_info(struct seq_file *m, + struct rsnd_dai_stream *io, + struct rsnd_mod *mod) +{ + rsnd_debugfs_mod_reg_show(m, mod, RSND_GEN2_SCU, + 0x500 + rsnd_mod_id_raw(mod) * 0x100, 0x100); +} +#define DEBUG_INFO .debug_info = rsnd_ctu_debug_info +#else +#define DEBUG_INFO +#endif + +static struct rsnd_mod_ops rsnd_ctu_ops = { + .name = CTU_NAME, + .probe = rsnd_ctu_probe_, + .init = rsnd_ctu_init, + .quit = rsnd_ctu_quit, + .pcm_new = rsnd_ctu_pcm_new, + .get_status = rsnd_mod_get_status, + .id = rsnd_ctu_id, + .id_sub = rsnd_ctu_id_sub, + .id_cmd = rsnd_mod_id_raw, + DEBUG_INFO +}; + +struct rsnd_mod *rsnd_ctu_mod_get(struct rsnd_priv *priv, int id) +{ + if (WARN_ON(id < 0 || id >= rsnd_ctu_nr(priv))) + id = 0; + + return rsnd_mod_get(rsnd_ctu_get(priv, id)); +} + +int rsnd_ctu_probe(struct rsnd_priv *priv) +{ + struct device_node *node; + struct device_node *np; + struct device *dev = rsnd_priv_to_dev(priv); + struct rsnd_ctu *ctu; + struct clk *clk; + char name[CTU_NAME_SIZE]; + int i, nr, ret; + + /* This driver doesn't support Gen1 at this point */ + if (rsnd_is_gen1(priv)) + return 0; + + node = rsnd_ctu_of_node(priv); + if (!node) + return 0; /* not used is not error */ + + nr = of_get_child_count(node); + if (!nr) { + ret = -EINVAL; + goto rsnd_ctu_probe_done; + } + + ctu = devm_kcalloc(dev, nr, sizeof(*ctu), GFP_KERNEL); + if (!ctu) { + ret = -ENOMEM; + goto rsnd_ctu_probe_done; + } + + priv->ctu_nr = nr; + priv->ctu = ctu; + + i = 0; + ret = 0; + for_each_child_of_node(node, np) { + ctu = rsnd_ctu_get(priv, i); + + /* + * CTU00, CTU01, CTU02, CTU03 => CTU0 + * CTU10, CTU11, CTU12, CTU13 => CTU1 + */ + snprintf(name, CTU_NAME_SIZE, "%s.%d", + CTU_NAME, i / 4); + + clk = devm_clk_get(dev, name); + if (IS_ERR(clk)) { + ret = PTR_ERR(clk); + of_node_put(np); + goto rsnd_ctu_probe_done; + } + + ret = rsnd_mod_init(priv, rsnd_mod_get(ctu), &rsnd_ctu_ops, + clk, RSND_MOD_CTU, i); + if (ret) { + of_node_put(np); + goto rsnd_ctu_probe_done; + } + + i++; + } + + +rsnd_ctu_probe_done: + of_node_put(node); + + return ret; +} + +void rsnd_ctu_remove(struct rsnd_priv *priv) +{ + struct rsnd_ctu *ctu; + int i; + + for_each_rsnd_ctu(ctu, priv, i) { + rsnd_mod_quit(rsnd_mod_get(ctu)); + } +} |