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authorKuninori Morimoto <kuninori.morimoto.gx@renesas.com>2011-04-21 10:33:52 +0900
committerMark Brown <broonie@opensource.wolfsonmicro.com>2011-04-26 11:42:11 +0100
commit1f5e2a319d2ba80bfea5c3b5cbafea09d5164a51 (patch)
tree179e316a0d9e928a054cf3d5a25f63373fe76eee /sound/soc/sh
parent106c79ecf2db141fcd6073de55ebeb3f041e0509 (diff)
downloadop-kernel-dev-1f5e2a319d2ba80bfea5c3b5cbafea09d5164a51.zip
op-kernel-dev-1f5e2a319d2ba80bfea5c3b5cbafea09d5164a51.tar.gz
ASoC: sh: fsi: Add module/port clock control function
The FIFO of each port were always working though it was not used in current FSI driver. This patch add module/port clock control function for fixing it. This patch is also caring suspend/resume. Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> Reviewed-by: Simon Horman <simon@horms.net> Acked-by: Liam Girdwood <lrg@ti.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Diffstat (limited to 'sound/soc/sh')
-rw-r--r--sound/soc/sh/fsi.c81
1 files changed, 50 insertions, 31 deletions
diff --git a/sound/soc/sh/fsi.c b/sound/soc/sh/fsi.c
index 1029a03..4a9da6b 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
@@ -187,6 +187,7 @@ struct fsi_master {
u32 saved_iemsk;
u32 saved_imsk;
u32 saved_clk_rst;
+ u32 saved_soft_rst;
};
/*
@@ -556,20 +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);
+ }
+
+ pm_runtime_put_sync(dev);
+}
-static void fsi_clk_ctrl(struct fsi_priv *fsi, int enable)
+#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)
@@ -622,18 +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;
@@ -818,10 +832,8 @@ static void fsi_dai_shutdown(struct snd_pcm_substream *substream,
fsi_irq_disable(fsi, is_play);
- if (fsi_is_clk_master(fsi)) {
- fsi_clk_ctrl(fsi, 0);
+ if (fsi_is_clk_master(fsi))
set_rate(dai->dev, fsi_is_port_a(fsi), fsi->rate, 0);
- }
fsi->rate = 0;
@@ -843,8 +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;
@@ -1018,7 +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;
}
@@ -1233,9 +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);
@@ -1279,6 +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);
@@ -1334,6 +1347,9 @@ static int fsi_suspend(struct device *dev)
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);
@@ -1347,14 +1363,17 @@ static int fsi_resume(struct device *dev)
pm_runtime_get_sync(dev);
- __fsi_resume(&master->fsia, dev, set_rate);
- __fsi_resume(&master->fsib, dev, set_rate);
+ 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_master_mask_set(master, CLK_RST, 0xffff, master->saved_clk_rst);
+
+ __fsi_resume(&master->fsia, dev, set_rate);
+ __fsi_resume(&master->fsib, dev, set_rate);
pm_runtime_put_sync(dev);
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