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Diffstat (limited to 'sound/soc/sh/rcar/adg.c')
-rw-r--r--sound/soc/sh/rcar/adg.c303
1 files changed, 234 insertions, 69 deletions
diff --git a/sound/soc/sh/rcar/adg.c b/sound/soc/sh/rcar/adg.c
index fefc881dbac2..c4ebbb7a7b6f 100644
--- a/sound/soc/sh/rcar/adg.c
+++ b/sound/soc/sh/rcar/adg.c
@@ -7,7 +7,7 @@
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*/
-#include <linux/sh_clk.h>
+#include <linux/clk-provider.h>
#include "rsnd.h"
#define CLKA 0
@@ -16,12 +16,26 @@
#define CLKI 3
#define CLKMAX 4
+#define CLKOUT 0
+#define CLKOUT1 1
+#define CLKOUT2 2
+#define CLKOUT3 3
+#define CLKOUTMAX 4
+
+#define BRRx_MASK(x) (0x3FF & x)
+
+static struct rsnd_mod_ops adg_ops = {
+ .name = "adg",
+};
+
struct rsnd_adg {
struct clk *clk[CLKMAX];
+ struct clk *clkout[CLKOUTMAX];
+ struct clk_onecell_data onecell;
+ struct rsnd_mod mod;
- int rbga_rate_for_441khz_div_6; /* RBGA */
- int rbgb_rate_for_48khz_div_6; /* RBGB */
- u32 ckr;
+ int rbga_rate_for_441khz; /* RBGA */
+ int rbgb_rate_for_48khz; /* RBGB */
};
#define for_each_rsnd_clk(pos, adg, i) \
@@ -29,8 +43,28 @@ struct rsnd_adg {
(i < CLKMAX) && \
((pos) = adg->clk[i]); \
i++)
+#define for_each_rsnd_clkout(pos, adg, i) \
+ for (i = 0; \
+ (i < CLKOUTMAX) && \
+ ((pos) = adg->clkout[i]); \
+ i++)
#define rsnd_priv_to_adg(priv) ((struct rsnd_adg *)(priv)->adg)
+static u32 rsnd_adg_calculate_rbgx(unsigned long div)
+{
+ int i, ratio;
+
+ if (!div)
+ return 0;
+
+ for (i = 3; i >= 0; i--) {
+ ratio = 2 << (i * 2);
+ if (0 == (div % ratio))
+ return (u32)((i << 8) | ((div / ratio) - 1));
+ }
+
+ return ~0;
+}
static u32 rsnd_adg_ssi_ws_timing_gen2(struct rsnd_dai_stream *io)
{
@@ -60,6 +94,9 @@ static u32 rsnd_adg_ssi_ws_timing_gen2(struct rsnd_dai_stream *io)
int rsnd_adg_set_cmd_timsel_gen2(struct rsnd_mod *mod,
struct rsnd_dai_stream *io)
{
+ struct rsnd_priv *priv = rsnd_mod_to_priv(mod);
+ struct rsnd_adg *adg = rsnd_priv_to_adg(priv);
+ struct rsnd_mod *adg_mod = rsnd_mod_get(adg);
int id = rsnd_mod_id(mod);
int shift = (id % 2) ? 16 : 0;
u32 mask, val;
@@ -69,21 +106,26 @@ int rsnd_adg_set_cmd_timsel_gen2(struct rsnd_mod *mod,
val = val << shift;
mask = 0xffff << shift;
- rsnd_mod_bset(mod, CMDOUT_TIMSEL, mask, val);
+ rsnd_mod_bset(adg_mod, CMDOUT_TIMSEL, mask, val);
return 0;
}
-static int rsnd_adg_set_src_timsel_gen2(struct rsnd_mod *mod,
+static int rsnd_adg_set_src_timsel_gen2(struct rsnd_mod *src_mod,
struct rsnd_dai_stream *io,
u32 timsel)
{
+ struct rsnd_priv *priv = rsnd_mod_to_priv(src_mod);
+ struct rsnd_adg *adg = rsnd_priv_to_adg(priv);
+ struct rsnd_mod *adg_mod = rsnd_mod_get(adg);
int is_play = rsnd_io_is_play(io);
- int id = rsnd_mod_id(mod);
+ int id = rsnd_mod_id(src_mod);
int shift = (id % 2) ? 16 : 0;
u32 mask, ws;
u32 in, out;
+ rsnd_mod_confirm_src(src_mod);
+
ws = rsnd_adg_ssi_ws_timing_gen2(io);
in = (is_play) ? timsel : ws;
@@ -95,37 +137,38 @@ static int rsnd_adg_set_src_timsel_gen2(struct rsnd_mod *mod,
switch (id / 2) {
case 0:
- rsnd_mod_bset(mod, SRCIN_TIMSEL0, mask, in);
- rsnd_mod_bset(mod, SRCOUT_TIMSEL0, mask, out);
+ rsnd_mod_bset(adg_mod, SRCIN_TIMSEL0, mask, in);
+ rsnd_mod_bset(adg_mod, SRCOUT_TIMSEL0, mask, out);
break;
case 1:
- rsnd_mod_bset(mod, SRCIN_TIMSEL1, mask, in);
- rsnd_mod_bset(mod, SRCOUT_TIMSEL1, mask, out);
+ rsnd_mod_bset(adg_mod, SRCIN_TIMSEL1, mask, in);
+ rsnd_mod_bset(adg_mod, SRCOUT_TIMSEL1, mask, out);
break;
case 2:
- rsnd_mod_bset(mod, SRCIN_TIMSEL2, mask, in);
- rsnd_mod_bset(mod, SRCOUT_TIMSEL2, mask, out);
+ rsnd_mod_bset(adg_mod, SRCIN_TIMSEL2, mask, in);
+ rsnd_mod_bset(adg_mod, SRCOUT_TIMSEL2, mask, out);
break;
case 3:
- rsnd_mod_bset(mod, SRCIN_TIMSEL3, mask, in);
- rsnd_mod_bset(mod, SRCOUT_TIMSEL3, mask, out);
+ rsnd_mod_bset(adg_mod, SRCIN_TIMSEL3, mask, in);
+ rsnd_mod_bset(adg_mod, SRCOUT_TIMSEL3, mask, out);
break;
case 4:
- rsnd_mod_bset(mod, SRCIN_TIMSEL4, mask, in);
- rsnd_mod_bset(mod, SRCOUT_TIMSEL4, mask, out);
+ rsnd_mod_bset(adg_mod, SRCIN_TIMSEL4, mask, in);
+ rsnd_mod_bset(adg_mod, SRCOUT_TIMSEL4, mask, out);
break;
}
return 0;
}
-int rsnd_adg_set_convert_clk_gen2(struct rsnd_mod *mod,
+int rsnd_adg_set_convert_clk_gen2(struct rsnd_mod *src_mod,
struct rsnd_dai_stream *io,
unsigned int src_rate,
unsigned int dst_rate)
{
- struct rsnd_priv *priv = rsnd_mod_to_priv(mod);
+ struct rsnd_priv *priv = rsnd_mod_to_priv(src_mod);
struct rsnd_adg *adg = rsnd_priv_to_adg(priv);
+ struct rsnd_mod *adg_mod = rsnd_mod_get(adg);
struct device *dev = rsnd_priv_to_dev(priv);
int idx, sel, div, step, ret;
u32 val, en;
@@ -134,10 +177,12 @@ int rsnd_adg_set_convert_clk_gen2(struct rsnd_mod *mod,
clk_get_rate(adg->clk[CLKA]), /* 0000: CLKA */
clk_get_rate(adg->clk[CLKB]), /* 0001: CLKB */
clk_get_rate(adg->clk[CLKC]), /* 0010: CLKC */
- adg->rbga_rate_for_441khz_div_6,/* 0011: RBGA */
- adg->rbgb_rate_for_48khz_div_6, /* 0100: RBGB */
+ adg->rbga_rate_for_441khz, /* 0011: RBGA */
+ adg->rbgb_rate_for_48khz, /* 0100: RBGB */
};
+ rsnd_mod_confirm_src(src_mod);
+
min = ~0;
val = 0;
en = 0;
@@ -175,25 +220,27 @@ int rsnd_adg_set_convert_clk_gen2(struct rsnd_mod *mod,
return -EIO;
}
- ret = rsnd_adg_set_src_timsel_gen2(mod, io, val);
+ ret = rsnd_adg_set_src_timsel_gen2(src_mod, io, val);
if (ret < 0) {
dev_err(dev, "timsel error\n");
return ret;
}
- rsnd_mod_bset(mod, DIV_EN, en, en);
+ rsnd_mod_bset(adg_mod, DIV_EN, en, en);
dev_dbg(dev, "convert rate %d <-> %d\n", src_rate, dst_rate);
return 0;
}
-int rsnd_adg_set_convert_timing_gen2(struct rsnd_mod *mod,
+int rsnd_adg_set_convert_timing_gen2(struct rsnd_mod *src_mod,
struct rsnd_dai_stream *io)
{
u32 val = rsnd_adg_ssi_ws_timing_gen2(io);
- return rsnd_adg_set_src_timsel_gen2(mod, io, val);
+ rsnd_mod_confirm_src(src_mod);
+
+ return rsnd_adg_set_src_timsel_gen2(src_mod, io, val);
}
int rsnd_adg_set_convert_clk_gen1(struct rsnd_priv *priv,
@@ -202,6 +249,7 @@ int rsnd_adg_set_convert_clk_gen1(struct rsnd_priv *priv,
unsigned int dst_rate)
{
struct rsnd_adg *adg = rsnd_priv_to_adg(priv);
+ struct rsnd_mod *adg_mod = rsnd_mod_get(adg);
struct device *dev = rsnd_priv_to_dev(priv);
int idx, sel, div, shift;
u32 mask, val;
@@ -211,8 +259,8 @@ int rsnd_adg_set_convert_clk_gen1(struct rsnd_priv *priv,
clk_get_rate(adg->clk[CLKB]), /* 001: CLKB */
clk_get_rate(adg->clk[CLKC]), /* 010: CLKC */
0, /* 011: MLBCLK (not used) */
- adg->rbga_rate_for_441khz_div_6,/* 100: RBGA */
- adg->rbgb_rate_for_48khz_div_6, /* 101: RBGB */
+ adg->rbga_rate_for_441khz, /* 100: RBGA */
+ adg->rbgb_rate_for_48khz, /* 101: RBGB */
};
/* find div (= 1/128, 1/256, 1/512, 1/1024, 1/2048 */
@@ -238,13 +286,13 @@ find_rate:
switch (id / 4) {
case 0:
- rsnd_mod_bset(mod, AUDIO_CLK_SEL3, mask, val);
+ rsnd_mod_bset(adg_mod, AUDIO_CLK_SEL3, mask, val);
break;
case 1:
- rsnd_mod_bset(mod, AUDIO_CLK_SEL4, mask, val);
+ rsnd_mod_bset(adg_mod, AUDIO_CLK_SEL4, mask, val);
break;
case 2:
- rsnd_mod_bset(mod, AUDIO_CLK_SEL5, mask, val);
+ rsnd_mod_bset(adg_mod, AUDIO_CLK_SEL5, mask, val);
break;
}
@@ -257,12 +305,17 @@ find_rate:
return 0;
}
-static void rsnd_adg_set_ssi_clk(struct rsnd_mod *mod, u32 val)
+static void rsnd_adg_set_ssi_clk(struct rsnd_mod *ssi_mod, u32 val)
{
- int id = rsnd_mod_id(mod);
+ struct rsnd_priv *priv = rsnd_mod_to_priv(ssi_mod);
+ struct rsnd_adg *adg = rsnd_priv_to_adg(priv);
+ struct rsnd_mod *adg_mod = rsnd_mod_get(adg);
+ int id = rsnd_mod_id(ssi_mod);
int shift = (id % 4) * 8;
u32 mask = 0xFF << shift;
+ rsnd_mod_confirm_ssi(ssi_mod);
+
val = val << shift;
/*
@@ -274,13 +327,13 @@ static void rsnd_adg_set_ssi_clk(struct rsnd_mod *mod, u32 val)
switch (id / 4) {
case 0:
- rsnd_mod_bset(mod, AUDIO_CLK_SEL0, mask, val);
+ rsnd_mod_bset(adg_mod, AUDIO_CLK_SEL0, mask, val);
break;
case 1:
- rsnd_mod_bset(mod, AUDIO_CLK_SEL1, mask, val);
+ rsnd_mod_bset(adg_mod, AUDIO_CLK_SEL1, mask, val);
break;
case 2:
- rsnd_mod_bset(mod, AUDIO_CLK_SEL2, mask, val);
+ rsnd_mod_bset(adg_mod, AUDIO_CLK_SEL2, mask, val);
break;
}
}
@@ -326,14 +379,14 @@ int rsnd_adg_ssi_clk_try_start(struct rsnd_mod *mod, unsigned int rate)
}
/*
- * find 1/6 clock from BRGA/BRGB
+ * find divided clock from BRGA/BRGB
*/
- if (rate == adg->rbga_rate_for_441khz_div_6) {
+ if (rate == adg->rbga_rate_for_441khz) {
data = 0x10;
goto found_clock;
}
- if (rate == adg->rbgb_rate_for_48khz_div_6) {
+ if (rate == adg->rbgb_rate_for_48khz) {
data = 0x20;
goto found_clock;
}
@@ -342,29 +395,60 @@ int rsnd_adg_ssi_clk_try_start(struct rsnd_mod *mod, unsigned int rate)
found_clock:
- /* see rsnd_adg_ssi_clk_init() */
- rsnd_mod_bset(mod, SSICKR, 0x00FF0000, adg->ckr);
- rsnd_mod_write(mod, BRRA, 0x00000002); /* 1/6 */
- rsnd_mod_write(mod, BRRB, 0x00000002); /* 1/6 */
-
/*
* This "mod" = "ssi" here.
* we can get "ssi id" from mod
*/
rsnd_adg_set_ssi_clk(mod, data);
- dev_dbg(dev, "ADG: ssi%d selects clk%d = %d",
- rsnd_mod_id(mod), i, rate);
+ dev_dbg(dev, "ADG: %s[%d] selects 0x%x for %d\n",
+ rsnd_mod_name(mod), rsnd_mod_id(mod),
+ data, rate);
return 0;
}
-static void rsnd_adg_ssi_clk_init(struct rsnd_priv *priv, struct rsnd_adg *adg)
+static void rsnd_adg_get_clkin(struct rsnd_priv *priv,
+ struct rsnd_adg *adg)
{
+ struct device *dev = rsnd_priv_to_dev(priv);
struct clk *clk;
- unsigned long rate;
- u32 ckr;
+ static const char * const clk_name[] = {
+ [CLKA] = "clk_a",
+ [CLKB] = "clk_b",
+ [CLKC] = "clk_c",
+ [CLKI] = "clk_i",
+ };
int i;
+
+ for (i = 0; i < CLKMAX; i++) {
+ clk = devm_clk_get(dev, clk_name[i]);
+ adg->clk[i] = IS_ERR(clk) ? NULL : clk;
+ }
+
+ for_each_rsnd_clk(clk, adg, i)
+ dev_dbg(dev, "clk %d : %p : %ld\n", i, clk, clk_get_rate(clk));
+}
+
+static void rsnd_adg_get_clkout(struct rsnd_priv *priv,
+ struct rsnd_adg *adg)
+{
+ struct clk *clk;
+ struct rsnd_mod *adg_mod = rsnd_mod_get(adg);
+ struct device *dev = rsnd_priv_to_dev(priv);
+ struct device_node *np = dev->of_node;
+ u32 ckr, rbgx, rbga, rbgb;
+ u32 rate, req_rate, div;
+ uint32_t count = 0;
+ unsigned long req_48kHz_rate, req_441kHz_rate;
+ int i;
+ const char *parent_clk_name = NULL;
+ static const char * const clkout_name[] = {
+ [CLKOUT] = "audio_clkout",
+ [CLKOUT1] = "audio_clkout1",
+ [CLKOUT2] = "audio_clkout2",
+ [CLKOUT3] = "audio_clkout3",
+ };
int brg_table[] = {
[CLKA] = 0x0,
[CLKB] = 0x1,
@@ -372,19 +456,34 @@ static void rsnd_adg_ssi_clk_init(struct rsnd_priv *priv, struct rsnd_adg *adg)
[CLKI] = 0x2,
};
+ of_property_read_u32(np, "#clock-cells", &count);
+
+ /*
+ * ADG supports BRRA/BRRB output only
+ * this means all clkout0/1/2/3 will be same rate
+ */
+ of_property_read_u32(np, "clock-frequency", &req_rate);
+ req_48kHz_rate = 0;
+ req_441kHz_rate = 0;
+ if (0 == (req_rate % 44100))
+ req_441kHz_rate = req_rate;
+ if (0 == (req_rate % 48000))
+ req_48kHz_rate = req_rate;
+
/*
* This driver is assuming that AUDIO_CLKA/AUDIO_CLKB/AUDIO_CLKC
* have 44.1kHz or 48kHz base clocks for now.
*
* SSI itself can divide parent clock by 1/1 - 1/16
- * So, BRGA outputs 44.1kHz base parent clock 1/32,
- * and, BRGB outputs 48.0kHz base parent clock 1/32 here.
* see
* rsnd_adg_ssi_clk_try_start()
+ * rsnd_ssi_master_clk_start()
*/
ckr = 0;
- adg->rbga_rate_for_441khz_div_6 = 0;
- adg->rbgb_rate_for_48khz_div_6 = 0;
+ rbga = 2; /* default 1/6 */
+ rbgb = 2; /* default 1/6 */
+ adg->rbga_rate_for_441khz = 0;
+ adg->rbgb_rate_for_48khz = 0;
for_each_rsnd_clk(clk, adg, i) {
rate = clk_get_rate(clk);
@@ -392,19 +491,86 @@ static void rsnd_adg_ssi_clk_init(struct rsnd_priv *priv, struct rsnd_adg *adg)
continue;
/* RBGA */
- if (!adg->rbga_rate_for_441khz_div_6 && (0 == rate % 44100)) {
- adg->rbga_rate_for_441khz_div_6 = rate / 6;
- ckr |= brg_table[i] << 20;
+ if (!adg->rbga_rate_for_441khz && (0 == rate % 44100)) {
+ div = 6;
+ if (req_441kHz_rate)
+ div = rate / req_441kHz_rate;
+ rbgx = rsnd_adg_calculate_rbgx(div);
+ if (BRRx_MASK(rbgx) == rbgx) {
+ rbga = rbgx;
+ adg->rbga_rate_for_441khz = rate / div;
+ ckr |= brg_table[i] << 20;
+ if (req_441kHz_rate)
+ parent_clk_name = __clk_get_name(clk);
+ }
}
/* RBGB */
- if (!adg->rbgb_rate_for_48khz_div_6 && (0 == rate % 48000)) {
- adg->rbgb_rate_for_48khz_div_6 = rate / 6;
- ckr |= brg_table[i] << 16;
+ if (!adg->rbgb_rate_for_48khz && (0 == rate % 48000)) {
+ div = 6;
+ if (req_48kHz_rate)
+ div = rate / req_48kHz_rate;
+ rbgx = rsnd_adg_calculate_rbgx(div);
+ if (BRRx_MASK(rbgx) == rbgx) {
+ rbgb = rbgx;
+ adg->rbgb_rate_for_48khz = rate / div;
+ ckr |= brg_table[i] << 16;
+ if (req_48kHz_rate) {
+ parent_clk_name = __clk_get_name(clk);
+ ckr |= 0x80000000;
+ }
+ }
+ }
+ }
+
+ /*
+ * ADG supports BRRA/BRRB output only.
+ * this means all clkout0/1/2/3 will be * same rate
+ */
+
+ /*
+ * for clkout
+ */
+ if (!count) {
+ clk = clk_register_fixed_rate(dev, clkout_name[CLKOUT],
+ parent_clk_name,
+ (parent_clk_name) ?
+ 0 : CLK_IS_ROOT, req_rate);
+ if (!IS_ERR(clk)) {
+ adg->clkout[CLKOUT] = clk;
+ of_clk_add_provider(np, of_clk_src_simple_get, clk);
+ }
+ }
+ /*
+ * for clkout0/1/2/3
+ */
+ else {
+ for (i = 0; i < CLKOUTMAX; i++) {
+ clk = clk_register_fixed_rate(dev, clkout_name[i],
+ parent_clk_name,
+ (parent_clk_name) ?
+ 0 : CLK_IS_ROOT,
+ req_rate);
+ if (!IS_ERR(clk)) {
+ adg->onecell.clks = adg->clkout;
+ adg->onecell.clk_num = CLKOUTMAX;
+
+ adg->clkout[i] = clk;
+
+ of_clk_add_provider(np, of_clk_src_onecell_get,
+ &adg->onecell);
+ }
}
}
- adg->ckr = ckr;
+ rsnd_mod_bset(adg_mod, SSICKR, 0x00FF0000, ckr);
+ rsnd_mod_write(adg_mod, BRRA, rbga);
+ rsnd_mod_write(adg_mod, BRRB, rbgb);
+
+ for_each_rsnd_clkout(clk, adg, i)
+ dev_dbg(dev, "clkout %d : %p : %ld\n", i, clk, clk_get_rate(clk));
+ dev_dbg(dev, "SSICKR = 0x%08x, BRRA/BRRB = 0x%x/0x%x\n",
+ ckr, rbga, rbgb);
}
int rsnd_adg_probe(struct platform_device *pdev,
@@ -413,8 +579,6 @@ int rsnd_adg_probe(struct platform_device *pdev,
{
struct rsnd_adg *adg;
struct device *dev = rsnd_priv_to_dev(priv);
- struct clk *clk;
- int i;
adg = devm_kzalloc(dev, sizeof(*adg), GFP_KERNEL);
if (!adg) {
@@ -422,15 +586,16 @@ int rsnd_adg_probe(struct platform_device *pdev,
return -ENOMEM;
}
- adg->clk[CLKA] = devm_clk_get(dev, "clk_a");
- adg->clk[CLKB] = devm_clk_get(dev, "clk_b");
- adg->clk[CLKC] = devm_clk_get(dev, "clk_c");
- adg->clk[CLKI] = devm_clk_get(dev, "clk_i");
-
- for_each_rsnd_clk(clk, adg, i)
- dev_dbg(dev, "clk %d : %p : %ld\n", i, clk, clk_get_rate(clk));
+ /*
+ * ADG is special module.
+ * Use ADG mod without rsnd_mod_init() to make debug easy
+ * for rsnd_write/rsnd_read
+ */
+ adg->mod.ops = &adg_ops;
+ adg->mod.priv = priv;
- rsnd_adg_ssi_clk_init(priv, adg);
+ rsnd_adg_get_clkin(priv, adg);
+ rsnd_adg_get_clkout(priv, adg);
priv->adg = adg;
generated by cgit v1.2.3 (git 2.39.0) at 2024-11-26 07:32:40 +0300