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-rw-r--r--sound/soc/sh/rcar/scu.c384
1 files changed, 0 insertions, 384 deletions
diff --git a/sound/soc/sh/rcar/scu.c b/sound/soc/sh/rcar/scu.c
deleted file mode 100644
index 9bb08bb1d455..000000000000
--- a/sound/soc/sh/rcar/scu.c
+++ /dev/null
@@ -1,384 +0,0 @@
-/*
- * Renesas R-Car SCU support
- *
- * Copyright (C) 2013 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"
-
-struct rsnd_scu {
- struct rsnd_scu_platform_info *info; /* rcar_snd.h */
- struct rsnd_mod mod;
- struct clk *clk;
-};
-
-#define rsnd_scu_mode_flags(p) ((p)->info->flags)
-#define rsnd_scu_convert_rate(p) ((p)->info->convert_rate)
-
-#define RSND_SCU_NAME_SIZE 16
-
-/*
- * ADINR
- */
-#define OTBL_24 (0 << 16)
-#define OTBL_22 (2 << 16)
-#define OTBL_20 (4 << 16)
-#define OTBL_18 (6 << 16)
-#define OTBL_16 (8 << 16)
-
-/*
- * image of SRC (Sampling Rate Converter)
- *
- * 96kHz <-> +-----+ 48kHz +-----+ 48kHz +-------+
- * 48kHz <-> | SRC | <------> | SSI | <-----> | codec |
- * 44.1kHz <-> +-----+ +-----+ +-------+
- * ...
- *
- */
-
-#define rsnd_mod_to_scu(_mod) \
- container_of((_mod), struct rsnd_scu, mod)
-
-#define for_each_rsnd_scu(pos, priv, i) \
- for ((i) = 0; \
- ((i) < rsnd_scu_nr(priv)) && \
- ((pos) = (struct rsnd_scu *)(priv)->scu + i); \
- i++)
-
-/* Gen1 only */
-static int rsnd_src_set_route_if_gen1(struct rsnd_priv *priv,
- struct rsnd_mod *mod,
- struct rsnd_dai *rdai,
- struct rsnd_dai_stream *io)
-{
- struct scu_route_config {
- u32 mask;
- int shift;
- } routes[] = {
- { 0xF, 0, }, /* 0 */
- { 0xF, 4, }, /* 1 */
- { 0xF, 8, }, /* 2 */
- { 0x7, 12, }, /* 3 */
- { 0x7, 16, }, /* 4 */
- { 0x7, 20, }, /* 5 */
- { 0x7, 24, }, /* 6 */
- { 0x3, 28, }, /* 7 */
- { 0x3, 30, }, /* 8 */
- };
- struct rsnd_scu *scu = rsnd_mod_to_scu(mod);
- u32 mask;
- u32 val;
- int shift;
- int id;
-
- /*
- * Gen1 only
- */
- if (!rsnd_is_gen1(priv))
- return 0;
-
- id = rsnd_mod_id(mod);
- if (id < 0 || id >= ARRAY_SIZE(routes))
- return -EIO;
-
- /*
- * SRC_ROUTE_SELECT
- */
- val = rsnd_dai_is_play(rdai, io) ? 0x1 : 0x2;
- val = val << routes[id].shift;
- mask = routes[id].mask << routes[id].shift;
-
- rsnd_mod_bset(mod, SRC_ROUTE_SEL, mask, val);
-
- /*
- * SRC_TIMING_SELECT
- */
- shift = (id % 4) * 8;
- mask = 0x1F << shift;
-
- /*
- * ADG is used as source clock if SRC was used,
- * then, SSI WS is used as destination clock.
- * SSI WS is used as source clock if SRC is not used
- * (when playback, source/destination become reverse when capture)
- */
- if (rsnd_scu_convert_rate(scu)) /* use ADG */
- val = 0;
- else if (8 == id) /* use SSI WS, but SRU8 is special */
- val = id << shift;
- else /* use SSI WS */
- val = (id + 1) << shift;
-
- switch (id / 4) {
- case 0:
- rsnd_mod_bset(mod, SRC_TMG_SEL0, mask, val);
- break;
- case 1:
- rsnd_mod_bset(mod, SRC_TMG_SEL1, mask, val);
- break;
- case 2:
- rsnd_mod_bset(mod, SRC_TMG_SEL2, mask, val);
- break;
- }
-
- return 0;
-}
-
-unsigned int rsnd_scu_get_ssi_rate(struct rsnd_priv *priv,
- struct rsnd_mod *ssi_mod,
- struct snd_pcm_runtime *runtime)
-{
- struct rsnd_scu *scu;
- unsigned int rate;
-
- /* this function is assuming SSI id = SCU id here */
- scu = rsnd_mod_to_scu(rsnd_scu_mod_get(priv, rsnd_mod_id(ssi_mod)));
-
- /*
- * return convert rate if SRC is used,
- * otherwise, return runtime->rate as usual
- */
- rate = rsnd_scu_convert_rate(scu);
- if (!rate)
- rate = runtime->rate;
-
- return rate;
-}
-
-static int rsnd_scu_convert_rate_ctrl(struct rsnd_priv *priv,
- struct rsnd_mod *mod,
- struct rsnd_dai *rdai,
- struct rsnd_dai_stream *io)
-{
- struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io);
- struct rsnd_scu *scu = rsnd_mod_to_scu(mod);
- u32 convert_rate = rsnd_scu_convert_rate(scu);
- u32 adinr = runtime->channels;
-
- /* set/clear soft reset */
- rsnd_mod_write(mod, SRC_SWRSR, 0);
- rsnd_mod_write(mod, SRC_SWRSR, 1);
-
- /* Initialize the operation of the SRC internal circuits */
- rsnd_mod_write(mod, SRC_SRCIR, 1);
-
- /* Set channel number and output bit length */
- switch (runtime->sample_bits) {
- case 16:
- adinr |= OTBL_16;
- break;
- case 32:
- adinr |= OTBL_24;
- break;
- default:
- return -EIO;
- }
- rsnd_mod_write(mod, SRC_ADINR, adinr);
-
- if (convert_rate) {
- u32 fsrate = 0x0400000 / convert_rate * runtime->rate;
- int ret;
-
- /* Enable the initial value of IFS */
- rsnd_mod_write(mod, SRC_IFSCR, 1);
-
- /* Set initial value of IFS */
- rsnd_mod_write(mod, SRC_IFSVR, fsrate);
-
- /* Select SRC mode (fixed value) */
- rsnd_mod_write(mod, SRC_SRCCR, 0x00010110);
-
- /* Set the restriction value of the FS ratio (98%) */
- rsnd_mod_write(mod, SRC_MNFSR, fsrate / 100 * 98);
-
- if (rsnd_is_gen1(priv)) {
- /* no SRC_BFSSR settings, since SRC_SRCCR::BUFMD is 0 */
- }
-
- /* set convert clock */
- ret = rsnd_adg_set_convert_clk(priv, mod,
- runtime->rate,
- convert_rate);
- if (ret < 0)
- return ret;
- }
-
- /* Cancel the initialization and operate the SRC function */
- rsnd_mod_write(mod, SRC_SRCIR, 0);
-
- /* use DMA transfer */
- rsnd_mod_write(mod, BUSIF_MODE, 1);
-
- return 0;
-}
-
-static int rsnd_scu_transfer_start(struct rsnd_priv *priv,
- struct rsnd_mod *mod,
- struct rsnd_dai *rdai,
- struct rsnd_dai_stream *io)
-{
- struct rsnd_scu *scu = rsnd_mod_to_scu(mod);
- int id = rsnd_mod_id(mod);
- u32 val;
-
- if (rsnd_is_gen1(priv)) {
- val = (1 << id);
- rsnd_mod_bset(mod, SRC_ROUTE_CTRL, val, val);
- }
-
- if (rsnd_scu_convert_rate(scu))
- rsnd_mod_write(mod, SRC_ROUTE_MODE0, 1);
-
- return 0;
-}
-
-static int rsnd_scu_transfer_stop(struct rsnd_priv *priv,
- struct rsnd_mod *mod,
- struct rsnd_dai *rdai,
- struct rsnd_dai_stream *io)
-{
- struct rsnd_scu *scu = rsnd_mod_to_scu(mod);
- int id = rsnd_mod_id(mod);
- u32 mask;
-
- if (rsnd_is_gen1(priv)) {
- mask = (1 << id);
- rsnd_mod_bset(mod, SRC_ROUTE_CTRL, mask, 0);
- }
-
- if (rsnd_scu_convert_rate(scu))
- rsnd_mod_write(mod, SRC_ROUTE_MODE0, 0);
-
- return 0;
-}
-
-bool rsnd_scu_hpbif_is_enable(struct rsnd_mod *mod)
-{
- struct rsnd_scu *scu = rsnd_mod_to_scu(mod);
- u32 flags = rsnd_scu_mode_flags(scu);
-
- return !!(flags & RSND_SCU_USE_HPBIF);
-}
-
-static int rsnd_scu_start(struct rsnd_mod *mod,
- struct rsnd_dai *rdai,
- struct rsnd_dai_stream *io)
-{
- struct rsnd_priv *priv = rsnd_mod_to_priv(mod);
- struct rsnd_scu *scu = rsnd_mod_to_scu(mod);
- struct device *dev = rsnd_priv_to_dev(priv);
- int ret;
-
- /*
- * SCU will be used if it has RSND_SCU_USE_HPBIF flags
- */
- if (!rsnd_scu_hpbif_is_enable(mod)) {
- /* it use PIO transter */
- dev_dbg(dev, "%s%d is not used\n",
- rsnd_mod_name(mod), rsnd_mod_id(mod));
-
- return 0;
- }
-
- clk_enable(scu->clk);
-
- /* it use DMA transter */
-
- ret = rsnd_src_set_route_if_gen1(priv, mod, rdai, io);
- if (ret < 0)
- return ret;
-
- ret = rsnd_scu_convert_rate_ctrl(priv, mod, rdai, io);
- if (ret < 0)
- return ret;
-
- ret = rsnd_scu_transfer_start(priv, mod, rdai, io);
- if (ret < 0)
- return ret;
-
- dev_dbg(dev, "%s%d start\n", rsnd_mod_name(mod), rsnd_mod_id(mod));
-
- return 0;
-}
-
-static int rsnd_scu_stop(struct rsnd_mod *mod,
- struct rsnd_dai *rdai,
- struct rsnd_dai_stream *io)
-{
- struct rsnd_priv *priv = rsnd_mod_to_priv(mod);
- struct rsnd_scu *scu = rsnd_mod_to_scu(mod);
-
- if (!rsnd_scu_hpbif_is_enable(mod))
- return 0;
-
- rsnd_scu_transfer_stop(priv, mod, rdai, io);
-
- clk_disable(scu->clk);
-
- return 0;
-}
-
-static struct rsnd_mod_ops rsnd_scu_ops = {
- .name = "scu",
- .start = rsnd_scu_start,
- .stop = rsnd_scu_stop,
-};
-
-struct rsnd_mod *rsnd_scu_mod_get(struct rsnd_priv *priv, int id)
-{
- if (WARN_ON(id < 0 || id >= rsnd_scu_nr(priv)))
- id = 0;
-
- return &((struct rsnd_scu *)(priv->scu) + id)->mod;
-}
-
-int rsnd_scu_probe(struct platform_device *pdev,
- struct rcar_snd_info *info,
- struct rsnd_priv *priv)
-{
- struct device *dev = rsnd_priv_to_dev(priv);
- struct rsnd_scu *scu;
- struct clk *clk;
- char name[RSND_SCU_NAME_SIZE];
- int i, nr;
-
- /*
- * init SCU
- */
- nr = info->scu_info_nr;
- scu = devm_kzalloc(dev, sizeof(*scu) * nr, GFP_KERNEL);
- if (!scu) {
- dev_err(dev, "SCU allocate failed\n");
- return -ENOMEM;
- }
-
- priv->scu_nr = nr;
- priv->scu = scu;
-
- for_each_rsnd_scu(scu, priv, i) {
- snprintf(name, RSND_SCU_NAME_SIZE, "scu.%d", i);
-
- clk = devm_clk_get(dev, name);
- if (IS_ERR(clk))
- return PTR_ERR(clk);
-
- rsnd_mod_init(priv, &scu->mod,
- &rsnd_scu_ops, i);
- scu->info = &info->scu_info[i];
- scu->clk = clk;
-
- dev_dbg(dev, "SCU%d probed\n", i);
- }
- dev_dbg(dev, "scu probed\n");
-
- return 0;
-}
-
-void rsnd_scu_remove(struct platform_device *pdev,
- struct rsnd_priv *priv)
-{
-}
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.