--- /dev/null
+/*
+ * Renesas R-Car DVC support
+ *
+ * Copyright (C) 2014 Renesas Solutions Corp.
+ * 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 RSND_DVC_NAME_SIZE 16
+
+#define DVC_NAME "dvc"
+
+struct rsnd_dvc {
+ struct rsnd_dvc_platform_info *info; /* rcar_snd.h */
+ struct rsnd_mod mod;
+ struct rsnd_kctrl_cfg_m volume;
+ struct rsnd_kctrl_cfg_m mute;
+ struct rsnd_kctrl_cfg_s ren; /* Ramp Enable */
+ struct rsnd_kctrl_cfg_s rup; /* Ramp Rate Up */
+ struct rsnd_kctrl_cfg_s rdown; /* Ramp Rate Down */
+};
+
+#define rsnd_dvc_of_node(priv) \
+ of_get_child_by_name(rsnd_priv_to_dev(priv)->of_node, "rcar_sound,dvc")
+
+#define rsnd_mod_to_dvc(_mod) \
+ container_of((_mod), struct rsnd_dvc, mod)
+
+#define for_each_rsnd_dvc(pos, priv, i) \
+ for ((i) = 0; \
+ ((i) < rsnd_dvc_nr(priv)) && \
+ ((pos) = (struct rsnd_dvc *)(priv)->dvc + i); \
+ i++)
+
+static const char * const dvc_ramp_rate[] = {
+ "128 dB/1 step", /* 00000 */
+ "64 dB/1 step", /* 00001 */
+ "32 dB/1 step", /* 00010 */
+ "16 dB/1 step", /* 00011 */
+ "8 dB/1 step", /* 00100 */
+ "4 dB/1 step", /* 00101 */
+ "2 dB/1 step", /* 00110 */
+ "1 dB/1 step", /* 00111 */
+ "0.5 dB/1 step", /* 01000 */
+ "0.25 dB/1 step", /* 01001 */
+ "0.125 dB/1 step", /* 01010 */
+ "0.125 dB/2 steps", /* 01011 */
+ "0.125 dB/4 steps", /* 01100 */
+ "0.125 dB/8 steps", /* 01101 */
+ "0.125 dB/16 steps", /* 01110 */
+ "0.125 dB/32 steps", /* 01111 */
+ "0.125 dB/64 steps", /* 10000 */
+ "0.125 dB/128 steps", /* 10001 */
+ "0.125 dB/256 steps", /* 10010 */
+ "0.125 dB/512 steps", /* 10011 */
+ "0.125 dB/1024 steps", /* 10100 */
+ "0.125 dB/2048 steps", /* 10101 */
+ "0.125 dB/4096 steps", /* 10110 */
+ "0.125 dB/8192 steps", /* 10111 */
+};
+
+static void rsnd_dvc_volume_update(struct rsnd_mod *mod)
+{
+ struct rsnd_dvc *dvc = rsnd_mod_to_dvc(mod);
+ u32 val[RSND_DVC_CHANNELS];
+ u32 dvucr = 0;
+ u32 mute = 0;
+ int i;
+
+ for (i = 0; i < dvc->mute.cfg.size; i++)
+ mute |= (!!dvc->mute.cfg.val[i]) << i;
+
+ /* Disable DVC Register access */
+ rsnd_mod_write(mod, DVC_DVUER, 0);
+
+ /* Enable Ramp */
+ if (dvc->ren.val) {
+ dvucr |= 0x10;
+
+ /* Digital Volume Max */
+ for (i = 0; i < RSND_DVC_CHANNELS; i++)
+ val[i] = dvc->volume.cfg.max;
+
+ rsnd_mod_write(mod, DVC_VRCTR, 0xff);
+ rsnd_mod_write(mod, DVC_VRPDR, dvc->rup.val << 8 |
+ dvc->rdown.val);
+ /*
+ * FIXME !!
+ * use scale-downed Digital Volume
+ * as Volume Ramp
+ * 7F FFFF -> 3FF
+ */
+ rsnd_mod_write(mod, DVC_VRDBR,
+ 0x3ff - (dvc->volume.val[0] >> 13));
+
+ } else {
+ for (i = 0; i < RSND_DVC_CHANNELS; i++)
+ val[i] = dvc->volume.val[i];
+ }
+
+ /* Enable Digital Volume */
+ dvucr |= 0x100;
+ rsnd_mod_write(mod, DVC_VOL0R, val[0]);
+ rsnd_mod_write(mod, DVC_VOL1R, val[1]);
+
+ /* Enable Mute */
+ if (mute) {
+ dvucr |= 0x1;
+ rsnd_mod_write(mod, DVC_ZCMCR, mute);
+ }
+
+ rsnd_mod_write(mod, DVC_DVUCR, dvucr);
+
+ /* Enable DVC Register access */
+ rsnd_mod_write(mod, DVC_DVUER, 1);
+}
+
+static int rsnd_dvc_remove_gen2(struct rsnd_mod *mod,
+ struct rsnd_priv *priv)
+{
+ struct rsnd_dvc *dvc = rsnd_mod_to_dvc(mod);
+
+ rsnd_kctrl_remove(dvc->volume);
+ rsnd_kctrl_remove(dvc->mute);
+ rsnd_kctrl_remove(dvc->ren);
+ rsnd_kctrl_remove(dvc->rup);
+ rsnd_kctrl_remove(dvc->rdown);
+
+ return 0;
+}
+
+static int rsnd_dvc_init(struct rsnd_mod *dvc_mod,
+ struct rsnd_priv *priv)
+{
+ struct rsnd_dai_stream *io = rsnd_mod_to_io(dvc_mod);
+ struct rsnd_mod *src_mod = rsnd_io_to_mod_src(io);
+ struct device *dev = rsnd_priv_to_dev(priv);
+ int dvc_id = rsnd_mod_id(dvc_mod);
+ int src_id = rsnd_mod_id(src_mod);
+ u32 route[] = {
+ [0] = 0x30000,
+ [1] = 0x30001,
+ [2] = 0x40000,
+ [3] = 0x10000,
+ [4] = 0x20000,
+ [5] = 0x40100
+ };
+
+ if (src_id >= ARRAY_SIZE(route)) {
+ dev_err(dev, "DVC%d isn't connected to SRC%d\n", dvc_id, src_id);
+ return -EINVAL;
+ }
+
+ rsnd_mod_hw_start(dvc_mod);
+
+ /*
+ * fixme
+ * it doesn't support CTU/MIX
+ */
+ rsnd_mod_write(dvc_mod, CMD_ROUTE_SLCT, route[src_id]);
+
+ rsnd_mod_write(dvc_mod, DVC_SWRSR, 0);
+ rsnd_mod_write(dvc_mod, DVC_SWRSR, 1);
+
+ rsnd_mod_write(dvc_mod, DVC_DVUIR, 1);
+
+ rsnd_mod_write(dvc_mod, DVC_ADINR, rsnd_get_adinr(dvc_mod));
+
+ /* ch0/ch1 Volume */
+ rsnd_dvc_volume_update(dvc_mod);
+
+ rsnd_mod_write(dvc_mod, DVC_DVUIR, 0);
+
+ rsnd_adg_set_cmd_timsel_gen2(dvc_mod, io);
+
+ return 0;
+}
+
+static int rsnd_dvc_quit(struct rsnd_mod *mod,
+ struct rsnd_priv *priv)
+{
+ rsnd_mod_hw_stop(mod);
+
+ return 0;
+}
+
+static int rsnd_dvc_start(struct rsnd_mod *mod,
+ struct rsnd_priv *priv)
+{
+ rsnd_mod_write(mod, CMD_CTRL, 0x10);
+
+ return 0;
+}
+
+static int rsnd_dvc_stop(struct rsnd_mod *mod,
+ struct rsnd_priv *priv)
+{
+ rsnd_mod_write(mod, CMD_CTRL, 0);
+
+ return 0;
+}
+
+static int rsnd_dvc_pcm_new(struct rsnd_mod *mod,
+ struct snd_soc_pcm_runtime *rtd)
+{
+ struct rsnd_dai_stream *io = rsnd_mod_to_io(mod);
+ struct rsnd_dvc *dvc = rsnd_mod_to_dvc(mod);
+ int is_play = rsnd_io_is_play(io);
+ int ret;
+
+ /* Volume */
+ ret = rsnd_kctrl_new_m(mod, rtd,
+ is_play ?
+ "DVC Out Playback Volume" : "DVC In Capture Volume",
+ rsnd_dvc_volume_update,
+ &dvc->volume, 0x00800000 - 1);
+ if (ret < 0)
+ return ret;
+
+ /* Mute */
+ ret = rsnd_kctrl_new_m(mod, rtd,
+ is_play ?
+ "DVC Out Mute Switch" : "DVC In Mute Switch",
+ rsnd_dvc_volume_update,
+ &dvc->mute, 1);
+ if (ret < 0)
+ return ret;
+
+ /* Ramp */
+ ret = rsnd_kctrl_new_s(mod, rtd,
+ is_play ?
+ "DVC Out Ramp Switch" : "DVC In Ramp Switch",
+ rsnd_dvc_volume_update,
+ &dvc->ren, 1);
+ if (ret < 0)
+ return ret;
+
+ ret = rsnd_kctrl_new_e(mod, rtd,
+ is_play ?
+ "DVC Out Ramp Up Rate" : "DVC In Ramp Up Rate",
+ &dvc->rup,
+ rsnd_dvc_volume_update,
+ dvc_ramp_rate, ARRAY_SIZE(dvc_ramp_rate));
+ if (ret < 0)
+ return ret;
+
+ ret = rsnd_kctrl_new_e(mod, rtd,
+ is_play ?
+ "DVC Out Ramp Down Rate" : "DVC In Ramp Down Rate",
+ &dvc->rdown,
+ rsnd_dvc_volume_update,
+ dvc_ramp_rate, ARRAY_SIZE(dvc_ramp_rate));
+
+ if (ret < 0)
+ return ret;
+
+ return 0;
+}
+
+static struct dma_chan *rsnd_dvc_dma_req(struct rsnd_mod *mod)
+{
+ struct rsnd_priv *priv = rsnd_mod_to_priv(mod);
+
+ return rsnd_dma_request_channel(rsnd_dvc_of_node(priv),
+ mod, "tx");
+}
+
+static struct rsnd_mod_ops rsnd_dvc_ops = {
+ .name = DVC_NAME,
+ .dma_req = rsnd_dvc_dma_req,
+ .remove = rsnd_dvc_remove_gen2,
+ .init = rsnd_dvc_init,
+ .quit = rsnd_dvc_quit,
+ .start = rsnd_dvc_start,
+ .stop = rsnd_dvc_stop,
+ .pcm_new = rsnd_dvc_pcm_new,
+};
+
+struct rsnd_mod *rsnd_dvc_mod_get(struct rsnd_priv *priv, int id)
+{
+ if (WARN_ON(id < 0 || id >= rsnd_dvc_nr(priv)))
+ id = 0;
+
+ return &((struct rsnd_dvc *)(priv->dvc) + id)->mod;
+}
+
+static void rsnd_of_parse_dvc(struct platform_device *pdev,
+ const struct rsnd_of_data *of_data,
+ struct rsnd_priv *priv)
+{
+ struct device_node *node;
+ struct rsnd_dvc_platform_info *dvc_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,dvc");
+ if (!node)
+ return;
+
+ nr = of_get_child_count(node);
+ if (!nr)
+ goto rsnd_of_parse_dvc_end;
+
+ dvc_info = devm_kzalloc(dev,
+ sizeof(struct rsnd_dvc_platform_info) * nr,
+ GFP_KERNEL);
+ if (!dvc_info) {
+ dev_err(dev, "dvc info allocation error\n");
+ goto rsnd_of_parse_dvc_end;
+ }
+
+ info->dvc_info = dvc_info;
+ info->dvc_info_nr = nr;
+
+rsnd_of_parse_dvc_end:
+ of_node_put(node);
+}
+
+int rsnd_dvc_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_dvc *dvc;
+ struct clk *clk;
+ char name[RSND_DVC_NAME_SIZE];
+ int i, nr, ret;
+
+ rsnd_of_parse_dvc(pdev, of_data, priv);
+
+ nr = info->dvc_info_nr;
+ if (!nr)
+ return 0;
+
+ /* This driver doesn't support Gen1 at this point */
+ if (rsnd_is_gen1(priv)) {
+ dev_warn(dev, "CMD is not supported on Gen1\n");
+ return -EINVAL;
+ }
+
+ dvc = devm_kzalloc(dev, sizeof(*dvc) * nr, GFP_KERNEL);
+ if (!dvc) {
+ dev_err(dev, "CMD allocate failed\n");
+ return -ENOMEM;
+ }
+
+ priv->dvc_nr = nr;
+ priv->dvc = dvc;
+
+ for_each_rsnd_dvc(dvc, priv, i) {
+ snprintf(name, RSND_DVC_NAME_SIZE, "%s.%d",
+ DVC_NAME, i);
+
+ clk = devm_clk_get(dev, name);
+ if (IS_ERR(clk))
+ return PTR_ERR(clk);
+
+ dvc->info = &info->dvc_info[i];
+
+ ret = rsnd_mod_init(&dvc->mod, &rsnd_dvc_ops,
+ clk, RSND_MOD_DVC, i);
+ if (ret)
+ return ret;
+ }
+
+ return 0;
+}
+
+void rsnd_dvc_remove(struct platform_device *pdev,
+ struct rsnd_priv *priv)
+{
+ struct rsnd_dvc *dvc;
+ int i;
+
+ for_each_rsnd_dvc(dvc, priv, i) {
+ rsnd_mod_quit(&dvc->mod);
+ }
+}
Code Review / kvmfornfv.git / blobdiff