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Diffstat (limited to 'sound/soc/sh/fsi.c')
-rw-r--r--sound/soc/sh/fsi.c188
1 files changed, 155 insertions, 33 deletions
diff --git a/sound/soc/sh/fsi.c b/sound/soc/sh/fsi.c
index 23c0e83d4c19..4a9da6b5f4e1 100644
--- a/sound/soc/sh/fsi.c
+++ b/sound/soc/sh/fsi.c
@@ -86,8 +86,8 @@
#define SE (1 << 0) /* Fix the master clock */
/* CLK_RST */
-#define B_CLK 0x00000010
-#define A_CLK 0x00000001
+#define CRB (1 << 4)
+#define CRA (1 << 0)
/* IO SHIFT / MACRO */
#define BI_SHIFT 12
@@ -146,11 +146,20 @@ struct fsi_priv {
void __iomem *base;
struct fsi_master *master;
- int chan_num;
struct fsi_stream playback;
struct fsi_stream capture;
+ int chan_num:16;
+ int clk_master:1;
+
long rate;
+
+ /* for suspend/resume */
+ u32 saved_do_fmt;
+ u32 saved_di_fmt;
+ u32 saved_ckg1;
+ u32 saved_ckg2;
+ u32 saved_out_sel;
};
struct fsi_core {
@@ -171,6 +180,14 @@ struct fsi_master {
struct fsi_core *core;
struct sh_fsi_platform_info *info;
spinlock_t lock;
+
+ /* for suspend/resume */
+ u32 saved_a_mclk;
+ u32 saved_b_mclk;
+ u32 saved_iemsk;
+ u32 saved_imsk;
+ u32 saved_clk_rst;
+ u32 saved_soft_rst;
};
/*
@@ -244,6 +261,11 @@ static struct fsi_master *fsi_get_master(struct fsi_priv *fsi)
return fsi->master;
}
+static int fsi_is_clk_master(struct fsi_priv *fsi)
+{
+ return fsi->clk_master;
+}
+
static int fsi_is_port_a(struct fsi_priv *fsi)
{
return fsi->master->base == fsi->base;
@@ -535,20 +557,45 @@ static void fsi_spdif_clk_ctrl(struct fsi_priv *fsi, int enable)
}
/*
- * ctrl function
+ * clock function
*/
+#define fsi_module_init(m, d) __fsi_module_clk_ctrl(m, d, 1)
+#define fsi_module_kill(m, d) __fsi_module_clk_ctrl(m, d, 0)
+static void __fsi_module_clk_ctrl(struct fsi_master *master,
+ struct device *dev,
+ int enable)
+{
+ pm_runtime_get_sync(dev);
+
+ if (enable) {
+ /* enable only SR */
+ fsi_master_mask_set(master, SOFT_RST, FSISR, FSISR);
+ fsi_master_mask_set(master, SOFT_RST, PASR | PBSR, 0);
+ } else {
+ /* clear all registers */
+ fsi_master_mask_set(master, SOFT_RST, FSISR, 0);
+ }
-static void fsi_clk_ctrl(struct fsi_priv *fsi, int enable)
+ pm_runtime_put_sync(dev);
+}
+
+#define fsi_port_start(f) __fsi_port_clk_ctrl(f, 1)
+#define fsi_port_stop(f) __fsi_port_clk_ctrl(f, 0)
+static void __fsi_port_clk_ctrl(struct fsi_priv *fsi, int enable)
{
- u32 val = fsi_is_port_a(fsi) ? (1 << 0) : (1 << 4);
struct fsi_master *master = fsi_get_master(fsi);
+ u32 soft = fsi_is_port_a(fsi) ? PASR : PBSR;
+ u32 clk = fsi_is_port_a(fsi) ? CRA : CRB;
+ int is_master = fsi_is_clk_master(fsi);
- if (enable)
- fsi_master_mask_set(master, CLK_RST, val, val);
- else
- fsi_master_mask_set(master, CLK_RST, val, 0);
+ fsi_master_mask_set(master, SOFT_RST, soft, (enable) ? soft : 0);
+ if (is_master)
+ fsi_master_mask_set(master, CLK_RST, clk, (enable) ? clk : 0);
}
+/*
+ * ctrl function
+ */
static void fsi_fifo_init(struct fsi_priv *fsi,
int is_play,
struct snd_soc_dai *dai)
@@ -601,18 +648,6 @@ static void fsi_fifo_init(struct fsi_priv *fsi,
}
}
-static void fsi_soft_all_reset(struct fsi_master *master)
-{
- /* port AB reset */
- fsi_master_mask_set(master, SOFT_RST, PASR | PBSR, 0);
- mdelay(10);
-
- /* soft reset */
- fsi_master_mask_set(master, SOFT_RST, FSISR, 0);
- fsi_master_mask_set(master, SOFT_RST, FSISR, FSISR);
- mdelay(10);
-}
-
static int fsi_fifo_data_ctrl(struct fsi_priv *fsi, int stream)
{
struct snd_pcm_runtime *runtime;
@@ -793,14 +828,13 @@ static void fsi_dai_shutdown(struct snd_pcm_substream *substream,
struct fsi_priv *fsi = fsi_get_priv(substream);
int is_play = fsi_is_play(substream);
struct fsi_master *master = fsi_get_master(fsi);
- set_rate_func set_rate;
+ set_rate_func set_rate = fsi_get_info_set_rate(master);
fsi_irq_disable(fsi, is_play);
- fsi_clk_ctrl(fsi, 0);
- set_rate = fsi_get_info_set_rate(master);
- if (set_rate && fsi->rate)
+ if (fsi_is_clk_master(fsi))
set_rate(dai->dev, fsi_is_port_a(fsi), fsi->rate, 0);
+
fsi->rate = 0;
pm_runtime_put_sync(dai->dev);
@@ -821,8 +855,10 @@ static int fsi_dai_trigger(struct snd_pcm_substream *substream, int cmd,
frames_to_bytes(runtime, runtime->period_size));
ret = is_play ? fsi_data_push(fsi) : fsi_data_pop(fsi);
fsi_irq_enable(fsi, is_play);
+ fsi_port_start(fsi);
break;
case SNDRV_PCM_TRIGGER_STOP:
+ fsi_port_stop(fsi);
fsi_irq_disable(fsi, is_play);
fsi_stream_pop(fsi, is_play);
break;
@@ -876,6 +912,8 @@ static int fsi_set_fmt_spdif(struct fsi_priv *fsi)
static int fsi_dai_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
{
struct fsi_priv *fsi = fsi_get_priv_frm_dai(dai);
+ struct fsi_master *master = fsi_get_master(fsi);
+ set_rate_func set_rate = fsi_get_info_set_rate(master);
u32 flags = fsi_get_info_flags(fsi);
u32 data = 0;
int ret;
@@ -886,6 +924,7 @@ static int fsi_dai_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
case SND_SOC_DAIFMT_CBM_CFM:
data = DIMD | DOMD;
+ fsi->clk_master = 1;
break;
case SND_SOC_DAIFMT_CBS_CFS:
break;
@@ -893,6 +932,13 @@ static int fsi_dai_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
ret = -EINVAL;
goto set_fmt_exit;
}
+
+ if (fsi_is_clk_master(fsi) && !set_rate) {
+ dev_err(dai->dev, "platform doesn't have set_rate\n");
+ ret = -EINVAL;
+ goto set_fmt_exit;
+ }
+
fsi_reg_mask_set(fsi, CKG1, (DIMD | DOMD), data);
/* set format */
@@ -919,13 +965,12 @@ static int fsi_dai_hw_params(struct snd_pcm_substream *substream,
{
struct fsi_priv *fsi = fsi_get_priv(substream);
struct fsi_master *master = fsi_get_master(fsi);
- set_rate_func set_rate;
+ set_rate_func set_rate = fsi_get_info_set_rate(master);
int fsi_ver = master->core->ver;
long rate = params_rate(params);
int ret;
- set_rate = fsi_get_info_set_rate(master);
- if (!set_rate)
+ if (!fsi_is_clk_master(fsi))
return 0;
ret = set_rate(dai->dev, fsi_is_port_a(fsi), rate, 1);
@@ -987,7 +1032,6 @@ static int fsi_dai_hw_params(struct snd_pcm_substream *substream,
fsi_reg_mask_set(fsi, CKG1, (ACKMD_MASK | BPFMD_MASK) , data);
udelay(10);
- fsi_clk_ctrl(fsi, 1);
ret = 0;
}
@@ -1202,9 +1246,7 @@ static int fsi_probe(struct platform_device *pdev)
pm_runtime_enable(&pdev->dev);
dev_set_drvdata(&pdev->dev, master);
- pm_runtime_get_sync(&pdev->dev);
- fsi_soft_all_reset(master);
- pm_runtime_put_sync(&pdev->dev);
+ fsi_module_init(master, &pdev->dev);
ret = request_irq(irq, &fsi_interrupt, IRQF_DISABLED,
id_entry->name, master);
@@ -1248,6 +1290,8 @@ static int fsi_remove(struct platform_device *pdev)
master = dev_get_drvdata(&pdev->dev);
+ fsi_module_kill(master, &pdev->dev);
+
free_irq(master->irq, master);
pm_runtime_disable(&pdev->dev);
@@ -1260,6 +1304,82 @@ static int fsi_remove(struct platform_device *pdev)
return 0;
}
+static void __fsi_suspend(struct fsi_priv *fsi,
+ struct device *dev,
+ set_rate_func set_rate)
+{
+ fsi->saved_do_fmt = fsi_reg_read(fsi, DO_FMT);
+ fsi->saved_di_fmt = fsi_reg_read(fsi, DI_FMT);
+ fsi->saved_ckg1 = fsi_reg_read(fsi, CKG1);
+ fsi->saved_ckg2 = fsi_reg_read(fsi, CKG2);
+ fsi->saved_out_sel = fsi_reg_read(fsi, OUT_SEL);
+
+ if (fsi_is_clk_master(fsi))
+ set_rate(dev, fsi_is_port_a(fsi), fsi->rate, 0);
+}
+
+static void __fsi_resume(struct fsi_priv *fsi,
+ struct device *dev,
+ set_rate_func set_rate)
+{
+ fsi_reg_write(fsi, DO_FMT, fsi->saved_do_fmt);
+ fsi_reg_write(fsi, DI_FMT, fsi->saved_di_fmt);
+ fsi_reg_write(fsi, CKG1, fsi->saved_ckg1);
+ fsi_reg_write(fsi, CKG2, fsi->saved_ckg2);
+ fsi_reg_write(fsi, OUT_SEL, fsi->saved_out_sel);
+
+ if (fsi_is_clk_master(fsi))
+ set_rate(dev, fsi_is_port_a(fsi), fsi->rate, 1);
+}
+
+static int fsi_suspend(struct device *dev)
+{
+ struct fsi_master *master = dev_get_drvdata(dev);
+ set_rate_func set_rate = fsi_get_info_set_rate(master);
+
+ pm_runtime_get_sync(dev);
+
+ __fsi_suspend(&master->fsia, dev, set_rate);
+ __fsi_suspend(&master->fsib, dev, set_rate);
+
+ master->saved_a_mclk = fsi_core_read(master, a_mclk);
+ master->saved_b_mclk = fsi_core_read(master, b_mclk);
+ master->saved_iemsk = fsi_core_read(master, iemsk);
+ master->saved_imsk = fsi_core_read(master, imsk);
+ master->saved_clk_rst = fsi_master_read(master, CLK_RST);
+ master->saved_soft_rst = fsi_master_read(master, SOFT_RST);
+
+ fsi_module_kill(master, dev);
+
+ pm_runtime_put_sync(dev);
+
+ return 0;
+}
+
+static int fsi_resume(struct device *dev)
+{
+ struct fsi_master *master = dev_get_drvdata(dev);
+ set_rate_func set_rate = fsi_get_info_set_rate(master);
+
+ pm_runtime_get_sync(dev);
+
+ fsi_module_init(master, dev);
+
+ fsi_master_mask_set(master, SOFT_RST, 0xffff, master->saved_soft_rst);
+ fsi_master_mask_set(master, CLK_RST, 0xffff, master->saved_clk_rst);
+ fsi_core_mask_set(master, a_mclk, 0xffff, master->saved_a_mclk);
+ fsi_core_mask_set(master, b_mclk, 0xffff, master->saved_b_mclk);
+ fsi_core_mask_set(master, iemsk, 0xffff, master->saved_iemsk);
+ fsi_core_mask_set(master, imsk, 0xffff, master->saved_imsk);
+
+ __fsi_resume(&master->fsia, dev, set_rate);
+ __fsi_resume(&master->fsib, dev, set_rate);
+
+ pm_runtime_put_sync(dev);
+
+ return 0;
+}
+
static int fsi_runtime_nop(struct device *dev)
{
/* Runtime PM callback shared between ->runtime_suspend()
@@ -1273,6 +1393,8 @@ static int fsi_runtime_nop(struct device *dev)
}
static struct dev_pm_ops fsi_pm_ops = {
+ .suspend = fsi_suspend,
+ .resume = fsi_resume,
.runtime_suspend = fsi_runtime_nop,
.runtime_resume = fsi_runtime_nop,
};