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-rw-r--r--sound/soc/sh/rcar/gen.c280
1 files changed, 280 insertions, 0 deletions
diff --git a/sound/soc/sh/rcar/gen.c b/sound/soc/sh/rcar/gen.c
new file mode 100644
index 000000000000..babb203b43b7
--- /dev/null
+++ b/sound/soc/sh/rcar/gen.c
@@ -0,0 +1,280 @@
+/*
+ * Renesas R-Car Gen1 SRU/SSI 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_gen_ops {
+ int (*path_init)(struct rsnd_priv *priv,
+ struct rsnd_dai *rdai,
+ struct rsnd_dai_stream *io);
+ int (*path_exit)(struct rsnd_priv *priv,
+ struct rsnd_dai *rdai,
+ struct rsnd_dai_stream *io);
+};
+
+struct rsnd_gen_reg_map {
+ int index; /* -1 : not supported */
+ u32 offset_id; /* offset of ssi0, ssi1, ssi2... */
+ u32 offset_adr; /* offset of SSICR, SSISR, ... */
+};
+
+struct rsnd_gen {
+ void __iomem *base[RSND_BASE_MAX];
+
+ struct rsnd_gen_reg_map reg_map[RSND_REG_MAX];
+ struct rsnd_gen_ops *ops;
+};
+
+#define rsnd_priv_to_gen(p) ((struct rsnd_gen *)(p)->gen)
+
+/*
+ * Gen2
+ * will be filled in the future
+ */
+
+/*
+ * Gen1
+ */
+static int rsnd_gen1_path_init(struct rsnd_priv *priv,
+ struct rsnd_dai *rdai,
+ struct rsnd_dai_stream *io)
+{
+ struct rsnd_mod *mod;
+ int ret;
+ int id;
+
+ /*
+ * Gen1 is created by SRU/SSI, and this SRU is base module of
+ * Gen2's SCU/SSIU/SSI. (Gen2 SCU/SSIU came from SRU)
+ *
+ * Easy image is..
+ * Gen1 SRU = Gen2 SCU + SSIU + etc
+ *
+ * Gen2 SCU path is very flexible, but, Gen1 SRU (SCU parts) is
+ * using fixed path.
+ *
+ * Then, SSI id = SCU id here
+ */
+
+ /* get SSI's ID */
+ mod = rsnd_ssi_mod_get_frm_dai(priv,
+ rsnd_dai_id(priv, rdai),
+ rsnd_dai_is_play(rdai, io));
+ id = rsnd_mod_id(mod);
+
+ /* SSI */
+ mod = rsnd_ssi_mod_get(priv, id);
+ ret = rsnd_dai_connect(rdai, mod, io);
+ if (ret < 0)
+ return ret;
+
+ /* SCU */
+ mod = rsnd_scu_mod_get(priv, id);
+ ret = rsnd_dai_connect(rdai, mod, io);
+
+ return ret;
+}
+
+static int rsnd_gen1_path_exit(struct rsnd_priv *priv,
+ struct rsnd_dai *rdai,
+ struct rsnd_dai_stream *io)
+{
+ struct rsnd_mod *mod, *n;
+ int ret = 0;
+
+ /*
+ * remove all mod from rdai
+ */
+ for_each_rsnd_mod(mod, n, io)
+ ret |= rsnd_dai_disconnect(mod);
+
+ return ret;
+}
+
+static struct rsnd_gen_ops rsnd_gen1_ops = {
+ .path_init = rsnd_gen1_path_init,
+ .path_exit = rsnd_gen1_path_exit,
+};
+
+#define RSND_GEN1_REG_MAP(g, s, i, oi, oa) \
+ do { \
+ (g)->reg_map[RSND_REG_##i].index = RSND_GEN1_##s; \
+ (g)->reg_map[RSND_REG_##i].offset_id = oi; \
+ (g)->reg_map[RSND_REG_##i].offset_adr = oa; \
+ } while (0)
+
+static void rsnd_gen1_reg_map_init(struct rsnd_gen *gen)
+{
+ RSND_GEN1_REG_MAP(gen, SRU, SRC_ROUTE_SEL, 0x0, 0x00);
+ RSND_GEN1_REG_MAP(gen, SRU, SRC_TMG_SEL0, 0x0, 0x08);
+ RSND_GEN1_REG_MAP(gen, SRU, SRC_TMG_SEL1, 0x0, 0x0c);
+ RSND_GEN1_REG_MAP(gen, SRU, SRC_TMG_SEL2, 0x0, 0x10);
+ RSND_GEN1_REG_MAP(gen, SRU, SRC_CTRL, 0x0, 0xc0);
+ RSND_GEN1_REG_MAP(gen, SRU, SSI_MODE0, 0x0, 0xD0);
+ RSND_GEN1_REG_MAP(gen, SRU, SSI_MODE1, 0x0, 0xD4);
+ RSND_GEN1_REG_MAP(gen, SRU, BUSIF_MODE, 0x4, 0x20);
+ RSND_GEN1_REG_MAP(gen, SRU, BUSIF_ADINR, 0x40, 0x214);
+
+ RSND_GEN1_REG_MAP(gen, ADG, BRRA, 0x0, 0x00);
+ RSND_GEN1_REG_MAP(gen, ADG, BRRB, 0x0, 0x04);
+ RSND_GEN1_REG_MAP(gen, ADG, SSICKR, 0x0, 0x08);
+ RSND_GEN1_REG_MAP(gen, ADG, AUDIO_CLK_SEL0, 0x0, 0x0c);
+ RSND_GEN1_REG_MAP(gen, ADG, AUDIO_CLK_SEL1, 0x0, 0x10);
+ RSND_GEN1_REG_MAP(gen, ADG, AUDIO_CLK_SEL3, 0x0, 0x18);
+ RSND_GEN1_REG_MAP(gen, ADG, AUDIO_CLK_SEL4, 0x0, 0x1c);
+ RSND_GEN1_REG_MAP(gen, ADG, AUDIO_CLK_SEL5, 0x0, 0x20);
+
+ RSND_GEN1_REG_MAP(gen, SSI, SSICR, 0x40, 0x00);
+ RSND_GEN1_REG_MAP(gen, SSI, SSISR, 0x40, 0x04);
+ RSND_GEN1_REG_MAP(gen, SSI, SSITDR, 0x40, 0x08);
+ RSND_GEN1_REG_MAP(gen, SSI, SSIRDR, 0x40, 0x0c);
+ RSND_GEN1_REG_MAP(gen, SSI, SSIWSR, 0x40, 0x20);
+}
+
+static int rsnd_gen1_probe(struct platform_device *pdev,
+ struct rcar_snd_info *info,
+ struct rsnd_priv *priv)
+{
+ struct device *dev = rsnd_priv_to_dev(priv);
+ struct rsnd_gen *gen = rsnd_priv_to_gen(priv);
+ struct resource *sru_res;
+ struct resource *adg_res;
+ struct resource *ssi_res;
+
+ /*
+ * map address
+ */
+ sru_res = platform_get_resource(pdev, IORESOURCE_MEM, RSND_GEN1_SRU);
+ adg_res = platform_get_resource(pdev, IORESOURCE_MEM, RSND_GEN1_ADG);
+ ssi_res = platform_get_resource(pdev, IORESOURCE_MEM, RSND_GEN1_SSI);
+
+ gen->base[RSND_GEN1_SRU] = devm_ioremap_resource(dev, sru_res);
+ gen->base[RSND_GEN1_ADG] = devm_ioremap_resource(dev, adg_res);
+ gen->base[RSND_GEN1_SSI] = devm_ioremap_resource(dev, ssi_res);
+ if (IS_ERR(gen->base[RSND_GEN1_SRU]) ||
+ IS_ERR(gen->base[RSND_GEN1_ADG]) ||
+ IS_ERR(gen->base[RSND_GEN1_SSI]))
+ return -ENODEV;
+
+ gen->ops = &rsnd_gen1_ops;
+ rsnd_gen1_reg_map_init(gen);
+
+ dev_dbg(dev, "Gen1 device probed\n");
+ dev_dbg(dev, "SRU : %08x => %p\n", sru_res->start,
+ gen->base[RSND_GEN1_SRU]);
+ dev_dbg(dev, "ADG : %08x => %p\n", adg_res->start,
+ gen->base[RSND_GEN1_ADG]);
+ dev_dbg(dev, "SSI : %08x => %p\n", ssi_res->start,
+ gen->base[RSND_GEN1_SSI]);
+
+ return 0;
+
+}
+
+static void rsnd_gen1_remove(struct platform_device *pdev,
+ struct rsnd_priv *priv)
+{
+}
+
+/*
+ * Gen
+ */
+int rsnd_gen_path_init(struct rsnd_priv *priv,
+ struct rsnd_dai *rdai,
+ struct rsnd_dai_stream *io)
+{
+ struct rsnd_gen *gen = rsnd_priv_to_gen(priv);
+
+ return gen->ops->path_init(priv, rdai, io);
+}
+
+int rsnd_gen_path_exit(struct rsnd_priv *priv,
+ struct rsnd_dai *rdai,
+ struct rsnd_dai_stream *io)
+{
+ struct rsnd_gen *gen = rsnd_priv_to_gen(priv);
+
+ return gen->ops->path_exit(priv, rdai, io);
+}
+
+void __iomem *rsnd_gen_reg_get(struct rsnd_priv *priv,
+ struct rsnd_mod *mod,
+ enum rsnd_reg reg)
+{
+ struct rsnd_gen *gen = rsnd_priv_to_gen(priv);
+ struct device *dev = rsnd_priv_to_dev(priv);
+ int index;
+ u32 offset_id, offset_adr;
+
+ if (reg >= RSND_REG_MAX) {
+ dev_err(dev, "rsnd_reg reg error\n");
+ return NULL;
+ }
+
+ index = gen->reg_map[reg].index;
+ offset_id = gen->reg_map[reg].offset_id;
+ offset_adr = gen->reg_map[reg].offset_adr;
+
+ if (index < 0) {
+ dev_err(dev, "unsupported reg access %d\n", reg);
+ return NULL;
+ }
+
+ if (offset_id && mod)
+ offset_id *= rsnd_mod_id(mod);
+
+ /*
+ * index/offset were set on gen1/gen2
+ */
+
+ return gen->base[index] + offset_id + offset_adr;
+}
+
+int rsnd_gen_probe(struct platform_device *pdev,
+ struct rcar_snd_info *info,
+ struct rsnd_priv *priv)
+{
+ struct device *dev = rsnd_priv_to_dev(priv);
+ struct rsnd_gen *gen;
+ int i;
+
+ gen = devm_kzalloc(dev, sizeof(*gen), GFP_KERNEL);
+ if (!gen) {
+ dev_err(dev, "GEN allocate failed\n");
+ return -ENOMEM;
+ }
+
+ priv->gen = gen;
+
+ /*
+ * see
+ * rsnd_reg_get()
+ * rsnd_gen_probe()
+ */
+ for (i = 0; i < RSND_REG_MAX; i++)
+ gen->reg_map[i].index = -1;
+
+ /*
+ * init each module
+ */
+ if (rsnd_is_gen1(priv))
+ return rsnd_gen1_probe(pdev, info, priv);
+
+ dev_err(dev, "unknown generation R-Car sound device\n");
+
+ return -ENODEV;
+}
+
+void rsnd_gen_remove(struct platform_device *pdev,
+ struct rsnd_priv *priv)
+{
+ if (rsnd_is_gen1(priv))
+ rsnd_gen1_remove(pdev, priv);
+}
generated by cgit (git 2.34.1) at 2024-06-20 22:56:49 +0000