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-rw-r--r--sound/soc/sh/rcar/ctu.c431
1 files changed, 431 insertions, 0 deletions
diff --git a/sound/soc/sh/rcar/ctu.c b/sound/soc/sh/rcar/ctu.c
new file mode 100644
index 000000000..6a55aa753
--- /dev/null
+++ b/sound/soc/sh/rcar/ctu.c
@@ -0,0 +1,431 @@
+// 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 sv0;
+ struct rsnd_kctrl_cfg_m sv1;
+ struct rsnd_kctrl_cfg_m sv2;
+ struct rsnd_kctrl_cfg_m sv3;
+ 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);
+}
+
+int rsnd_ctu_converted_channel(struct rsnd_mod *mod)
+{
+ struct rsnd_ctu *ctu = rsnd_mod_to_ctu(mod);
+
+ return ctu->channels;
+}
+
+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) / 4);
+}
+
+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;
+
+ 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);
+
+ if (scmdr > 0) {
+ rsnd_mod_write(mod, CTU_SV00R, rsnd_kctrl_valm(ctu->sv0, 0));
+ rsnd_mod_write(mod, CTU_SV01R, rsnd_kctrl_valm(ctu->sv0, 1));
+ rsnd_mod_write(mod, CTU_SV02R, rsnd_kctrl_valm(ctu->sv0, 2));
+ rsnd_mod_write(mod, CTU_SV03R, rsnd_kctrl_valm(ctu->sv0, 3));
+ rsnd_mod_write(mod, CTU_SV04R, rsnd_kctrl_valm(ctu->sv0, 4));
+ rsnd_mod_write(mod, CTU_SV05R, rsnd_kctrl_valm(ctu->sv0, 5));
+ rsnd_mod_write(mod, CTU_SV06R, rsnd_kctrl_valm(ctu->sv0, 6));
+ rsnd_mod_write(mod, CTU_SV07R, rsnd_kctrl_valm(ctu->sv0, 7));
+ }
+ if (scmdr > 1) {
+ rsnd_mod_write(mod, CTU_SV10R, rsnd_kctrl_valm(ctu->sv1, 0));
+ rsnd_mod_write(mod, CTU_SV11R, rsnd_kctrl_valm(ctu->sv1, 1));
+ rsnd_mod_write(mod, CTU_SV12R, rsnd_kctrl_valm(ctu->sv1, 2));
+ rsnd_mod_write(mod, CTU_SV13R, rsnd_kctrl_valm(ctu->sv1, 3));
+ rsnd_mod_write(mod, CTU_SV14R, rsnd_kctrl_valm(ctu->sv1, 4));
+ rsnd_mod_write(mod, CTU_SV15R, rsnd_kctrl_valm(ctu->sv1, 5));
+ rsnd_mod_write(mod, CTU_SV16R, rsnd_kctrl_valm(ctu->sv1, 6));
+ rsnd_mod_write(mod, CTU_SV17R, rsnd_kctrl_valm(ctu->sv1, 7));
+ }
+ if (scmdr > 2) {
+ rsnd_mod_write(mod, CTU_SV20R, rsnd_kctrl_valm(ctu->sv2, 0));
+ rsnd_mod_write(mod, CTU_SV21R, rsnd_kctrl_valm(ctu->sv2, 1));
+ rsnd_mod_write(mod, CTU_SV22R, rsnd_kctrl_valm(ctu->sv2, 2));
+ rsnd_mod_write(mod, CTU_SV23R, rsnd_kctrl_valm(ctu->sv2, 3));
+ rsnd_mod_write(mod, CTU_SV24R, rsnd_kctrl_valm(ctu->sv2, 4));
+ rsnd_mod_write(mod, CTU_SV25R, rsnd_kctrl_valm(ctu->sv2, 5));
+ rsnd_mod_write(mod, CTU_SV26R, rsnd_kctrl_valm(ctu->sv2, 6));
+ rsnd_mod_write(mod, CTU_SV27R, rsnd_kctrl_valm(ctu->sv2, 7));
+ }
+ if (scmdr > 3) {
+ rsnd_mod_write(mod, CTU_SV30R, rsnd_kctrl_valm(ctu->sv3, 0));
+ rsnd_mod_write(mod, CTU_SV31R, rsnd_kctrl_valm(ctu->sv3, 1));
+ rsnd_mod_write(mod, CTU_SV32R, rsnd_kctrl_valm(ctu->sv3, 2));
+ rsnd_mod_write(mod, CTU_SV33R, rsnd_kctrl_valm(ctu->sv3, 3));
+ rsnd_mod_write(mod, CTU_SV34R, rsnd_kctrl_valm(ctu->sv3, 4));
+ rsnd_mod_write(mod, CTU_SV35R, rsnd_kctrl_valm(ctu->sv3, 5));
+ rsnd_mod_write(mod, CTU_SV36R, rsnd_kctrl_valm(ctu->sv3, 6));
+ rsnd_mod_write(mod, CTU_SV37R, rsnd_kctrl_valm(ctu->sv3, 7));
+ }
+
+ 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->sv0, i) = 0;
+ rsnd_kctrl_valm(ctu->sv1, i) = 0;
+ rsnd_kctrl_valm(ctu->sv2, i) = 0;
+ rsnd_kctrl_valm(ctu->sv3, 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)
+{
+ rsnd_mod_power_on(mod);
+
+ 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_hw_params(struct rsnd_mod *mod,
+ struct rsnd_dai_stream *io,
+ struct snd_pcm_substream *substream,
+ struct snd_pcm_hw_params *fe_params)
+{
+ struct rsnd_ctu *ctu = rsnd_mod_to_ctu(mod);
+ struct snd_soc_pcm_runtime *fe = substream->private_data;
+
+ /*
+ * CTU assumes that it is used under DPCM if user want to use
+ * channel transfer. Then, CTU should be FE.
+ * And then, this function will be called *after* BE settings.
+ * this means, each BE already has fixuped hw_params.
+ * see
+ * dpcm_fe_dai_hw_params()
+ * dpcm_be_dai_hw_params()
+ */
+ ctu->channels = 0;
+ if (fe->dai_link->dynamic) {
+ struct rsnd_priv *priv = rsnd_mod_to_priv(mod);
+ struct device *dev = rsnd_priv_to_dev(priv);
+ struct snd_soc_dpcm *dpcm;
+ struct snd_pcm_hw_params *be_params;
+ int stream = substream->stream;
+
+ list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be) {
+ be_params = &dpcm->hw_params;
+ if (params_channels(fe_params) != params_channels(be_params))
+ ctu->channels = params_channels(be_params);
+ }
+
+ dev_dbg(dev, "CTU convert channels %d\n", ctu->channels);
+ }
+
+ 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);
+
+ /* ROW0 */
+ ret = rsnd_kctrl_new_m(mod, io, rtd, "CTU SV0",
+ rsnd_kctrl_accept_anytime,
+ NULL,
+ &ctu->sv0, 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->sv1, 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->sv2, 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->sv3, 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 struct rsnd_mod_ops rsnd_ctu_ops = {
+ .name = CTU_NAME,
+ .probe = rsnd_ctu_probe_,
+ .init = rsnd_ctu_init,
+ .quit = rsnd_ctu_quit,
+ .hw_params = rsnd_ctu_hw_params,
+ .pcm_new = rsnd_ctu_pcm_new,
+};
+
+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_get_status, 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));
+ }
+}
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