--- /dev/null
+/*
+ * Renesas R-Car SRC 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"
+
+#define SRC_NAME "src"
+
+/* SRCx_STATUS */
+#define OUF_SRCO ((1 << 12) | (1 << 13))
+#define OUF_SRCI ((1 << 9) | (1 << 8))
+
+/* SCU_SYSTEM_STATUS0/1 */
+#define OUF_SRC(id) ((1 << (id + 16)) | (1 << id))
+
+struct rsnd_src {
+ struct rsnd_src_platform_info *info; /* rcar_snd.h */
+ struct rsnd_mod mod;
+ struct rsnd_kctrl_cfg_s sen; /* sync convert enable */
+ struct rsnd_kctrl_cfg_s sync; /* sync convert */
+ u32 convert_rate; /* sampling rate convert */
+ int err;
+};
+
+#define RSND_SRC_NAME_SIZE 16
+
+#define rsnd_enable_sync_convert(src) ((src)->sen.val)
+#define rsnd_src_of_node(priv) \
+ of_get_child_by_name(rsnd_priv_to_dev(priv)->of_node, "rcar_sound,src")
+
+#define rsnd_mod_to_src(_mod) \
+ container_of((_mod), struct rsnd_src, mod)
+
+#define for_each_rsnd_src(pos, priv, i) \
+ for ((i) = 0; \
+ ((i) < rsnd_src_nr(priv)) && \
+ ((pos) = (struct rsnd_src *)(priv)->src + i); \
+ i++)
+
+
+/*
+ * image of SRC (Sampling Rate Converter)
+ *
+ * 96kHz <-> +-----+ 48kHz +-----+ 48kHz +-------+
+ * 48kHz <-> | SRC | <------> | SSI | <-----> | codec |
+ * 44.1kHz <-> +-----+ +-----+ +-------+
+ * ...
+ *
+ */
+
+/*
+ * src.c is caring...
+ *
+ * Gen1
+ *
+ * [mem] -> [SRU] -> [SSI]
+ * |--------|
+ *
+ * Gen2
+ *
+ * [mem] -> [SRC] -> [SSIU] -> [SSI]
+ * |-----------------|
+ */
+
+/*
+ * How to use SRC bypass mode for debugging
+ *
+ * SRC has bypass mode, and it is useful for debugging.
+ * In Gen2 case,
+ * SRCm_MODE controls whether SRC is used or not
+ * SSI_MODE0 controls whether SSIU which receives SRC data
+ * is used or not.
+ * Both SRCm_MODE/SSI_MODE0 settings are needed if you use SRC,
+ * but SRC bypass mode needs SSI_MODE0 only.
+ *
+ * This driver request
+ * struct rsnd_src_platform_info {
+ * u32 convert_rate;
+ * int dma_id;
+ * }
+ *
+ * rsnd_src_convert_rate() indicates
+ * above convert_rate, and it controls
+ * whether SRC is used or not.
+ *
+ * ex) doesn't use SRC
+ * static struct rsnd_dai_platform_info rsnd_dai = {
+ * .playback = { .ssi = &rsnd_ssi[0], },
+ * };
+ *
+ * ex) uses SRC
+ * static struct rsnd_src_platform_info rsnd_src[] = {
+ * RSND_SCU(48000, 0),
+ * ...
+ * };
+ * static struct rsnd_dai_platform_info rsnd_dai = {
+ * .playback = { .ssi = &rsnd_ssi[0], .src = &rsnd_src[0] },
+ * };
+ *
+ * ex) uses SRC bypass mode
+ * static struct rsnd_src_platform_info rsnd_src[] = {
+ * RSND_SCU(0, 0),
+ * ...
+ * };
+ * static struct rsnd_dai_platform_info rsnd_dai = {
+ * .playback = { .ssi = &rsnd_ssi[0], .src = &rsnd_src[0] },
+ * };
+ *
+ */
+
+/*
+ * Gen1/Gen2 common functions
+ */
+static struct dma_chan *rsnd_src_dma_req(struct rsnd_mod *mod)
+{
+ struct rsnd_priv *priv = rsnd_mod_to_priv(mod);
+ struct rsnd_dai_stream *io = rsnd_mod_to_io(mod);
+ int is_play = rsnd_io_is_play(io);
+
+ return rsnd_dma_request_channel(rsnd_src_of_node(priv),
+ mod,
+ is_play ? "rx" : "tx");
+}
+
+int rsnd_src_ssiu_start(struct rsnd_mod *ssi_mod,
+ int use_busif)
+{
+ struct rsnd_dai_stream *io = rsnd_mod_to_io(ssi_mod);
+ struct rsnd_dai *rdai = rsnd_io_to_rdai(io);
+ struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io);
+ int ssi_id = rsnd_mod_id(ssi_mod);
+
+ /*
+ * SSI_MODE0
+ */
+ rsnd_mod_bset(ssi_mod, SSI_MODE0, (1 << ssi_id),
+ !use_busif << ssi_id);
+
+ /*
+ * SSI_MODE1
+ */
+ if (rsnd_ssi_is_pin_sharing(ssi_mod)) {
+ int shift = -1;
+ switch (ssi_id) {
+ case 1:
+ shift = 0;
+ break;
+ case 2:
+ shift = 2;
+ break;
+ case 4:
+ shift = 16;
+ break;
+ }
+
+ if (shift >= 0)
+ rsnd_mod_bset(ssi_mod, SSI_MODE1,
+ 0x3 << shift,
+ rsnd_rdai_is_clk_master(rdai) ?
+ 0x2 << shift : 0x1 << shift);
+ }
+
+ /*
+ * DMA settings for SSIU
+ */
+ if (use_busif) {
+ u32 val = 0x76543210;
+ u32 mask = ~0;
+
+ rsnd_mod_write(ssi_mod, SSI_BUSIF_ADINR,
+ rsnd_get_adinr(ssi_mod));
+ rsnd_mod_write(ssi_mod, SSI_BUSIF_MODE, 1);
+ rsnd_mod_write(ssi_mod, SSI_CTRL, 0x1);
+
+ mask <<= runtime->channels * 4;
+ val = val & mask;
+
+ switch (runtime->sample_bits) {
+ case 16:
+ val |= 0x67452301 & ~mask;
+ break;
+ case 32:
+ val |= 0x76543210 & ~mask;
+ break;
+ }
+ rsnd_mod_write(ssi_mod, BUSIF_DALIGN, val);
+
+ }
+
+ return 0;
+}
+
+int rsnd_src_ssiu_stop(struct rsnd_mod *ssi_mod)
+{
+ /*
+ * DMA settings for SSIU
+ */
+ rsnd_mod_write(ssi_mod, SSI_CTRL, 0);
+
+ return 0;
+}
+
+int rsnd_src_ssi_irq_enable(struct rsnd_mod *ssi_mod)
+{
+ struct rsnd_priv *priv = rsnd_mod_to_priv(ssi_mod);
+
+ if (rsnd_is_gen1(priv))
+ return 0;
+
+ /* enable SSI interrupt if Gen2 */
+ if (rsnd_ssi_is_dma_mode(ssi_mod))
+ rsnd_mod_write(ssi_mod, INT_ENABLE, 0x0e000000);
+ else
+ rsnd_mod_write(ssi_mod, INT_ENABLE, 0x0f000000);
+
+ return 0;
+}
+
+int rsnd_src_ssi_irq_disable(struct rsnd_mod *ssi_mod)
+{
+ struct rsnd_priv *priv = rsnd_mod_to_priv(ssi_mod);
+
+ if (rsnd_is_gen1(priv))
+ return 0;
+
+ /* disable SSI interrupt if Gen2 */
+ rsnd_mod_write(ssi_mod, INT_ENABLE, 0x00000000);
+
+ return 0;
+}
+
+static u32 rsnd_src_convert_rate(struct rsnd_src *src)
+{
+ struct rsnd_mod *mod = &src->mod;
+ struct rsnd_dai_stream *io = rsnd_mod_to_io(mod);
+ struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io);
+ u32 convert_rate;
+
+ if (!runtime)
+ return 0;
+
+ if (!rsnd_enable_sync_convert(src))
+ return src->convert_rate;
+
+ convert_rate = src->sync.val;
+
+ if (!convert_rate)
+ convert_rate = src->convert_rate;
+
+ if (!convert_rate)
+ convert_rate = runtime->rate;
+
+ return convert_rate;
+}
+
+unsigned int rsnd_src_get_ssi_rate(struct rsnd_priv *priv,
+ struct rsnd_dai_stream *io,
+ struct snd_pcm_runtime *runtime)
+{
+ struct rsnd_mod *src_mod = rsnd_io_to_mod_src(io);
+ struct rsnd_src *src;
+ unsigned int rate = 0;
+
+ if (src_mod) {
+ src = rsnd_mod_to_src(src_mod);
+
+ /*
+ * return convert rate if SRC is used,
+ * otherwise, return runtime->rate as usual
+ */
+ rate = rsnd_src_convert_rate(src);
+ }
+
+ if (!rate)
+ rate = runtime->rate;
+
+ return rate;
+}
+
+static int rsnd_src_set_convert_rate(struct rsnd_mod *mod)
+{
+ struct rsnd_dai_stream *io = rsnd_mod_to_io(mod);
+ struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io);
+ struct rsnd_src *src = rsnd_mod_to_src(mod);
+ u32 convert_rate = rsnd_src_convert_rate(src);
+ u32 fsrate = 0;
+
+ if (convert_rate)
+ fsrate = 0x0400000 / convert_rate * runtime->rate;
+
+ /* set/clear soft reset */
+ rsnd_mod_write(mod, SRC_SWRSR, 0);
+ rsnd_mod_write(mod, SRC_SWRSR, 1);
+
+ /* Set channel number and output bit length */
+ rsnd_mod_write(mod, SRC_ADINR, rsnd_get_adinr(mod));
+
+ /* Enable the initial value of IFS */
+ if (fsrate) {
+ rsnd_mod_write(mod, SRC_IFSCR, 1);
+
+ /* Set initial value of IFS */
+ rsnd_mod_write(mod, SRC_IFSVR, fsrate);
+ }
+
+ /* use DMA transfer */
+ rsnd_mod_write(mod, SRC_BUSIF_MODE, 1);
+
+ return 0;
+}
+
+static int rsnd_src_hw_params(struct rsnd_mod *mod,
+ struct snd_pcm_substream *substream,
+ struct snd_pcm_hw_params *fe_params)
+{
+ struct rsnd_src *src = rsnd_mod_to_src(mod);
+ struct snd_soc_pcm_runtime *fe = substream->private_data;
+
+ /* default value (mainly for non-DT) */
+ src->convert_rate = src->info->convert_rate;
+
+ /*
+ * SRC assumes that it is used under DPCM if user want to use
+ * sampling rate convert. Then, SRC 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()
+ */
+ if (fe->dai_link->dynamic) {
+ int stream = substream->stream;
+ struct snd_soc_dpcm *dpcm;
+ struct snd_pcm_hw_params *be_params;
+
+ list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be) {
+ be_params = &dpcm->hw_params;
+
+ if (params_rate(fe_params) != params_rate(be_params))
+ src->convert_rate = params_rate(be_params);
+ }
+ }
+
+ return 0;
+}
+
+static int rsnd_src_init(struct rsnd_mod *mod,
+ struct rsnd_priv *priv)
+{
+ struct rsnd_src *src = rsnd_mod_to_src(mod);
+
+ rsnd_mod_hw_start(mod);
+
+ src->err = 0;
+
+ /* reset sync convert_rate */
+ src->sync.val = 0;
+
+ /*
+ * Initialize the operation of the SRC internal circuits
+ * see rsnd_src_start()
+ */
+ rsnd_mod_write(mod, SRC_SRCIR, 1);
+
+ return 0;
+}
+
+static int rsnd_src_quit(struct rsnd_mod *mod,
+ struct rsnd_priv *priv)
+{
+ struct rsnd_src *src = rsnd_mod_to_src(mod);
+ struct device *dev = rsnd_priv_to_dev(priv);
+
+ rsnd_mod_hw_stop(mod);
+
+ if (src->err)
+ dev_warn(dev, "%s[%d] under/over flow err = %d\n",
+ rsnd_mod_name(mod), rsnd_mod_id(mod), src->err);
+
+ src->convert_rate = 0;
+
+ /* reset sync convert_rate */
+ src->sync.val = 0;
+
+ return 0;
+}
+
+static int rsnd_src_start(struct rsnd_mod *mod)
+{
+ /*
+ * Cancel the initialization and operate the SRC function
+ * see rsnd_src_init()
+ */
+ rsnd_mod_write(mod, SRC_SRCIR, 0);
+
+ return 0;
+}
+
+static int rsnd_src_stop(struct rsnd_mod *mod)
+{
+ /* nothing to do */
+ return 0;
+}
+
+/*
+ * Gen1 functions
+ */
+static int rsnd_src_set_route_gen1(struct rsnd_mod *mod)
+{
+ struct rsnd_dai_stream *io = rsnd_mod_to_io(mod);
+ struct src_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 */
+ };
+ u32 mask;
+ u32 val;
+ int id;
+
+ id = rsnd_mod_id(mod);
+ if (id < 0 || id >= ARRAY_SIZE(routes))
+ return -EIO;
+
+ /*
+ * SRC_ROUTE_SELECT
+ */
+ val = rsnd_io_is_play(io) ? 0x1 : 0x2;
+ val = val << routes[id].shift;
+ mask = routes[id].mask << routes[id].shift;
+
+ rsnd_mod_bset(mod, SRC_ROUTE_SEL, mask, val);
+
+ return 0;
+}
+
+static int rsnd_src_set_convert_timing_gen1(struct rsnd_mod *mod)
+{
+ struct rsnd_dai_stream *io = rsnd_mod_to_io(mod);
+ struct rsnd_priv *priv = rsnd_mod_to_priv(mod);
+ struct rsnd_src *src = rsnd_mod_to_src(mod);
+ struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io);
+ u32 convert_rate = rsnd_src_convert_rate(src);
+ u32 mask;
+ u32 val;
+ int shift;
+ int id = rsnd_mod_id(mod);
+ int ret;
+
+ /*
+ * 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)
+ */
+ ret = 0;
+ if (convert_rate) {
+ /* use ADG */
+ val = 0;
+ ret = rsnd_adg_set_convert_clk_gen1(priv, mod,
+ runtime->rate,
+ convert_rate);
+ } else if (8 == id) {
+ /* use SSI WS, but SRU8 is special */
+ val = id << shift;
+ } else {
+ /* use SSI WS */
+ val = (id + 1) << shift;
+ }
+
+ if (ret < 0)
+ return ret;
+
+ 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;
+}
+
+static int rsnd_src_set_convert_rate_gen1(struct rsnd_mod *mod)
+{
+ struct rsnd_src *src = rsnd_mod_to_src(mod);
+ int ret;
+
+ ret = rsnd_src_set_convert_rate(mod);
+ if (ret < 0)
+ return ret;
+
+ /* 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,
+ rsnd_mod_read(mod, SRC_IFSVR) / 100 * 98);
+
+ /* Gen1/Gen2 are not compatible */
+ if (rsnd_src_convert_rate(src))
+ rsnd_mod_write(mod, SRC_ROUTE_MODE0, 1);
+
+ /* no SRC_BFSSR settings, since SRC_SRCCR::BUFMD is 0 */
+
+ return 0;
+}
+
+static int rsnd_src_init_gen1(struct rsnd_mod *mod,
+ struct rsnd_priv *priv)
+{
+ int ret;
+
+ ret = rsnd_src_init(mod, priv);
+ if (ret < 0)
+ return ret;
+
+ ret = rsnd_src_set_route_gen1(mod);
+ if (ret < 0)
+ return ret;
+
+ ret = rsnd_src_set_convert_rate_gen1(mod);
+ if (ret < 0)
+ return ret;
+
+ ret = rsnd_src_set_convert_timing_gen1(mod);
+ if (ret < 0)
+ return ret;
+
+ return 0;
+}
+
+static int rsnd_src_start_gen1(struct rsnd_mod *mod,
+ struct rsnd_priv *priv)
+{
+ int id = rsnd_mod_id(mod);
+
+ rsnd_mod_bset(mod, SRC_ROUTE_CTRL, (1 << id), (1 << id));
+
+ return rsnd_src_start(mod);
+}
+
+static int rsnd_src_stop_gen1(struct rsnd_mod *mod,
+ struct rsnd_priv *priv)
+{
+ int id = rsnd_mod_id(mod);
+
+ rsnd_mod_bset(mod, SRC_ROUTE_CTRL, (1 << id), 0);
+
+ return rsnd_src_stop(mod);
+}
+
+static struct rsnd_mod_ops rsnd_src_gen1_ops = {
+ .name = SRC_NAME,
+ .dma_req = rsnd_src_dma_req,
+ .init = rsnd_src_init_gen1,
+ .quit = rsnd_src_quit,
+ .start = rsnd_src_start_gen1,
+ .stop = rsnd_src_stop_gen1,
+ .hw_params = rsnd_src_hw_params,
+};
+
+/*
+ * Gen2 functions
+ */
+#define rsnd_src_irq_enable_gen2(mod) rsnd_src_irq_ctrol_gen2(mod, 1)
+#define rsnd_src_irq_disable_gen2(mod) rsnd_src_irq_ctrol_gen2(mod, 0)
+static void rsnd_src_irq_ctrol_gen2(struct rsnd_mod *mod, int enable)
+{
+ struct rsnd_src *src = rsnd_mod_to_src(mod);
+ u32 sys_int_val, int_val, sys_int_mask;
+ int irq = src->info->irq;
+ int id = rsnd_mod_id(mod);
+
+ sys_int_val =
+ sys_int_mask = OUF_SRC(id);
+ int_val = 0x3300;
+
+ /*
+ * IRQ is not supported on non-DT
+ * see
+ * rsnd_src_probe_gen2()
+ */
+ if ((irq <= 0) || !enable) {
+ sys_int_val = 0;
+ int_val = 0;
+ }
+
+ rsnd_mod_write(mod, SRC_INT_ENABLE0, int_val);
+ rsnd_mod_bset(mod, SCU_SYS_INT_EN0, sys_int_mask, sys_int_val);
+ rsnd_mod_bset(mod, SCU_SYS_INT_EN1, sys_int_mask, sys_int_val);
+}
+
+static void rsnd_src_error_clear_gen2(struct rsnd_mod *mod)
+{
+ u32 val = OUF_SRC(rsnd_mod_id(mod));
+
+ rsnd_mod_bset(mod, SCU_SYS_STATUS0, val, val);
+ rsnd_mod_bset(mod, SCU_SYS_STATUS1, val, val);
+}
+
+static bool rsnd_src_error_record_gen2(struct rsnd_mod *mod)
+{
+ u32 val = OUF_SRC(rsnd_mod_id(mod));
+ bool ret = false;
+
+ if ((rsnd_mod_read(mod, SCU_SYS_STATUS0) & val) ||
+ (rsnd_mod_read(mod, SCU_SYS_STATUS1) & val)) {
+ struct rsnd_src *src = rsnd_mod_to_src(mod);
+
+ src->err++;
+ ret = true;
+ }
+
+ /* clear error static */
+ rsnd_src_error_clear_gen2(mod);
+
+ return ret;
+}
+
+static int _rsnd_src_start_gen2(struct rsnd_mod *mod)
+{
+ struct rsnd_dai_stream *io = rsnd_mod_to_io(mod);
+ u32 val = rsnd_io_to_mod_dvc(io) ? 0x01 : 0x11;
+
+ rsnd_mod_write(mod, SRC_CTRL, val);
+
+ rsnd_src_error_clear_gen2(mod);
+
+ rsnd_src_start(mod);
+
+ rsnd_src_irq_enable_gen2(mod);
+
+ return 0;
+}
+
+static int _rsnd_src_stop_gen2(struct rsnd_mod *mod)
+{
+ rsnd_src_irq_disable_gen2(mod);
+
+ rsnd_mod_write(mod, SRC_CTRL, 0);
+
+ rsnd_src_error_record_gen2(mod);
+
+ return rsnd_src_stop(mod);
+}
+
+static irqreturn_t rsnd_src_interrupt_gen2(int irq, void *data)
+{
+ struct rsnd_mod *mod = data;
+ struct rsnd_dai_stream *io = rsnd_mod_to_io(mod);
+
+ if (!io)
+ return IRQ_NONE;
+
+ if (rsnd_src_error_record_gen2(mod)) {
+ struct rsnd_priv *priv = rsnd_mod_to_priv(mod);
+ struct rsnd_src *src = rsnd_mod_to_src(mod);
+ struct device *dev = rsnd_priv_to_dev(priv);
+
+ dev_dbg(dev, "%s[%d] restart\n",
+ rsnd_mod_name(mod), rsnd_mod_id(mod));
+
+ _rsnd_src_stop_gen2(mod);
+ if (src->err < 1024)
+ _rsnd_src_start_gen2(mod);
+ else
+ dev_warn(dev, "no more SRC restart\n");
+ }
+
+ return IRQ_HANDLED;
+}
+
+static int rsnd_src_set_convert_rate_gen2(struct rsnd_mod *mod)
+{
+ struct rsnd_priv *priv = rsnd_mod_to_priv(mod);
+ struct device *dev = rsnd_priv_to_dev(priv);
+ struct rsnd_dai_stream *io = rsnd_mod_to_io(mod);
+ struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io);
+ struct rsnd_src *src = rsnd_mod_to_src(mod);
+ u32 convert_rate = rsnd_src_convert_rate(src);
+ u32 cr, route;
+ uint ratio;
+ int ret;
+
+ /* 6 - 1/6 are very enough ratio for SRC_BSDSR */
+ if (!convert_rate)
+ ratio = 0;
+ else if (convert_rate > runtime->rate)
+ ratio = 100 * convert_rate / runtime->rate;
+ else
+ ratio = 100 * runtime->rate / convert_rate;
+
+ if (ratio > 600) {
+ dev_err(dev, "FSO/FSI ratio error\n");
+ return -EINVAL;
+ }
+
+ ret = rsnd_src_set_convert_rate(mod);
+ if (ret < 0)
+ return ret;
+
+ cr = 0x00011110;
+ route = 0x0;
+ if (convert_rate) {
+ route = 0x1;
+
+ if (rsnd_enable_sync_convert(src)) {
+ cr |= 0x1;
+ route |= rsnd_io_is_play(io) ?
+ (0x1 << 24) : (0x1 << 25);
+ }
+ }
+
+ rsnd_mod_write(mod, SRC_SRCCR, cr);
+ rsnd_mod_write(mod, SRC_ROUTE_MODE0, route);
+
+ switch (rsnd_mod_id(mod)) {
+ case 5:
+ case 6:
+ case 7:
+ case 8:
+ rsnd_mod_write(mod, SRC_BSDSR, 0x02400000);
+ break;
+ default:
+ rsnd_mod_write(mod, SRC_BSDSR, 0x01800000);
+ break;
+ }
+
+ rsnd_mod_write(mod, SRC_BSISR, 0x00100060);
+
+ return 0;
+}
+
+static int rsnd_src_set_convert_timing_gen2(struct rsnd_mod *mod)
+{
+ struct rsnd_dai_stream *io = rsnd_mod_to_io(mod);
+ struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io);
+ struct rsnd_src *src = rsnd_mod_to_src(mod);
+ u32 convert_rate = rsnd_src_convert_rate(src);
+ int ret;
+
+ if (convert_rate)
+ ret = rsnd_adg_set_convert_clk_gen2(mod, io,
+ runtime->rate,
+ convert_rate);
+ else
+ ret = rsnd_adg_set_convert_timing_gen2(mod, io);
+
+ return ret;
+}
+
+static int rsnd_src_probe_gen2(struct rsnd_mod *mod,
+ struct rsnd_priv *priv)
+{
+ struct rsnd_src *src = rsnd_mod_to_src(mod);
+ struct device *dev = rsnd_priv_to_dev(priv);
+ int irq = src->info->irq;
+ int ret;
+
+ if (irq > 0) {
+ /*
+ * IRQ is not supported on non-DT
+ * see
+ * rsnd_src_irq_enable_gen2()
+ */
+ ret = devm_request_irq(dev, irq,
+ rsnd_src_interrupt_gen2,
+ IRQF_SHARED,
+ dev_name(dev), mod);
+ if (ret)
+ return ret;
+ }
+
+ ret = rsnd_dma_init(priv,
+ rsnd_mod_to_dma(mod),
+ src->info->dma_id);
+
+ return ret;
+}
+
+static int rsnd_src_remove_gen2(struct rsnd_mod *mod,
+ struct rsnd_priv *priv)
+{
+ rsnd_dma_quit(rsnd_mod_to_dma(mod));
+
+ return 0;
+}
+
+static int rsnd_src_init_gen2(struct rsnd_mod *mod,
+ struct rsnd_priv *priv)
+{
+ int ret;
+
+ ret = rsnd_src_init(mod, priv);
+ if (ret < 0)
+ return ret;
+
+ ret = rsnd_src_set_convert_rate_gen2(mod);
+ if (ret < 0)
+ return ret;
+
+ ret = rsnd_src_set_convert_timing_gen2(mod);
+ if (ret < 0)
+ return ret;
+
+ return 0;
+}
+
+static int rsnd_src_start_gen2(struct rsnd_mod *mod,
+ struct rsnd_priv *priv)
+{
+ rsnd_dma_start(rsnd_mod_to_dma(mod));
+
+ return _rsnd_src_start_gen2(mod);
+}
+
+static int rsnd_src_stop_gen2(struct rsnd_mod *mod,
+ struct rsnd_priv *priv)
+{
+ int ret;
+
+ ret = _rsnd_src_stop_gen2(mod);
+
+ rsnd_dma_stop(rsnd_mod_to_dma(mod));
+
+ return ret;
+}
+
+static void rsnd_src_reconvert_update(struct rsnd_mod *mod)
+{
+ struct rsnd_dai_stream *io = rsnd_mod_to_io(mod);
+ struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io);
+ struct rsnd_src *src = rsnd_mod_to_src(mod);
+ u32 convert_rate = rsnd_src_convert_rate(src);
+ u32 fsrate;
+
+ if (!runtime)
+ return;
+
+ if (!convert_rate)
+ convert_rate = runtime->rate;
+
+ fsrate = 0x0400000 / convert_rate * runtime->rate;
+
+ /* update IFS */
+ rsnd_mod_write(mod, SRC_IFSVR, fsrate);
+}
+
+static int rsnd_src_pcm_new(struct rsnd_mod *mod,
+ struct snd_soc_pcm_runtime *rtd)
+{
+ struct rsnd_priv *priv = rsnd_mod_to_priv(mod);
+ struct rsnd_dai_stream *io = rsnd_mod_to_io(mod);
+ struct rsnd_dai *rdai = rsnd_io_to_rdai(io);
+ struct rsnd_src *src = rsnd_mod_to_src(mod);
+ int ret;
+
+ /*
+ * enable SRC sync convert if possible
+ */
+
+ /*
+ * Gen1 is not supported
+ */
+ if (rsnd_is_gen1(priv))
+ return 0;
+
+ /*
+ * SRC sync convert needs clock master
+ */
+ if (!rsnd_rdai_is_clk_master(rdai))
+ return 0;
+
+ /*
+ * We can't use SRC sync convert
+ * if it has DVC
+ */
+ if (rsnd_io_to_mod_dvc(io))
+ return 0;
+
+ /*
+ * enable sync convert
+ */
+ ret = rsnd_kctrl_new_s(mod, rtd,
+ rsnd_io_is_play(io) ?
+ "SRC Out Rate Switch" :
+ "SRC In Rate Switch",
+ rsnd_src_reconvert_update,
+ &src->sen, 1);
+ if (ret < 0)
+ return ret;
+
+ ret = rsnd_kctrl_new_s(mod, rtd,
+ rsnd_io_is_play(io) ?
+ "SRC Out Rate" :
+ "SRC In Rate",
+ rsnd_src_reconvert_update,
+ &src->sync, 192000);
+
+ return ret;
+}
+
+static struct rsnd_mod_ops rsnd_src_gen2_ops = {
+ .name = SRC_NAME,
+ .dma_req = rsnd_src_dma_req,
+ .probe = rsnd_src_probe_gen2,
+ .remove = rsnd_src_remove_gen2,
+ .init = rsnd_src_init_gen2,
+ .quit = rsnd_src_quit,
+ .start = rsnd_src_start_gen2,
+ .stop = rsnd_src_stop_gen2,
+ .hw_params = rsnd_src_hw_params,
+ .pcm_new = rsnd_src_pcm_new,
+};
+
+struct rsnd_mod *rsnd_src_mod_get(struct rsnd_priv *priv, int id)
+{
+ if (WARN_ON(id < 0 || id >= rsnd_src_nr(priv)))
+ id = 0;
+
+ return &((struct rsnd_src *)(priv->src) + id)->mod;
+}
+
+static void rsnd_of_parse_src(struct platform_device *pdev,
+ const struct rsnd_of_data *of_data,
+ struct rsnd_priv *priv)
+{
+ struct device_node *src_node;
+ struct device_node *np;
+ struct rcar_snd_info *info = rsnd_priv_to_info(priv);
+ struct rsnd_src_platform_info *src_info;
+ struct device *dev = &pdev->dev;
+ int nr, i;
+
+ if (!of_data)
+ return;
+
+ src_node = rsnd_src_of_node(priv);
+ if (!src_node)
+ return;
+
+ nr = of_get_child_count(src_node);
+ if (!nr)
+ goto rsnd_of_parse_src_end;
+
+ src_info = devm_kzalloc(dev,
+ sizeof(struct rsnd_src_platform_info) * nr,
+ GFP_KERNEL);
+ if (!src_info) {
+ dev_err(dev, "src info allocation error\n");
+ goto rsnd_of_parse_src_end;
+ }
+
+ info->src_info = src_info;
+ info->src_info_nr = nr;
+
+ i = 0;
+ for_each_child_of_node(src_node, np) {
+ src_info[i].irq = irq_of_parse_and_map(np, 0);
+
+ i++;
+ }
+
+rsnd_of_parse_src_end:
+ of_node_put(src_node);
+}
+
+int rsnd_src_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_src *src;
+ struct rsnd_mod_ops *ops;
+ struct clk *clk;
+ char name[RSND_SRC_NAME_SIZE];
+ int i, nr, ret;
+
+ ops = NULL;
+ if (rsnd_is_gen1(priv))
+ ops = &rsnd_src_gen1_ops;
+ if (rsnd_is_gen2(priv))
+ ops = &rsnd_src_gen2_ops;
+ if (!ops) {
+ dev_err(dev, "unknown Generation\n");
+ return -EIO;
+ }
+
+ rsnd_of_parse_src(pdev, of_data, priv);
+
+ /*
+ * init SRC
+ */
+ nr = info->src_info_nr;
+ if (!nr)
+ return 0;
+
+ src = devm_kzalloc(dev, sizeof(*src) * nr, GFP_KERNEL);
+ if (!src) {
+ dev_err(dev, "SRC allocate failed\n");
+ return -ENOMEM;
+ }
+
+ priv->src_nr = nr;
+ priv->src = src;
+
+ for_each_rsnd_src(src, priv, i) {
+ snprintf(name, RSND_SRC_NAME_SIZE, "%s.%d",
+ SRC_NAME, i);
+
+ clk = devm_clk_get(dev, name);
+ if (IS_ERR(clk))
+ return PTR_ERR(clk);
+
+ src->info = &info->src_info[i];
+
+ ret = rsnd_mod_init(&src->mod, ops, clk, RSND_MOD_SRC, i);
+ if (ret)
+ return ret;
+ }
+
+ return 0;
+}
+
+void rsnd_src_remove(struct platform_device *pdev,
+ struct rsnd_priv *priv)
+{
+ struct rsnd_src *src;
+ int i;
+
+ for_each_rsnd_src(src, priv, i) {
+ rsnd_mod_quit(&src->mod);
+ }
+}
Code Review / kvmfornfv.git / blobdiff