diff options
| author | Kuninori Morimoto <morimoto.kuninori@renesas.com> | 2010-03-23 11:47:54 +0900 |
|---|---|---|
| committer | Mark Brown <broonie@opensource.wolfsonmicro.com> | 2010-03-24 11:16:47 +0000 |
| commit | 10ea76cc25b6738eb2f7c58b3312e1ebc61f753e (patch) | |
| tree | d0d9835c3b85f9b1bb7bba8b4fe9f223097d85e1 /sound/soc/sh | |
| parent | feb58cffca772097a849b413fb7954f87e9e9e71 (diff) | |
ASoC: fsi: IRQ related process had be united
Signed-off-by: Kuninori Morimoto <morimoto.kuninori@renesas.com>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Diffstat (limited to 'sound/soc/sh')
| -rw-r--r-- | sound/soc/sh/fsi.c | 53 |
1 files changed, 39 insertions, 14 deletions
diff --git a/sound/soc/sh/fsi.c b/sound/soc/sh/fsi.c index db91349b6806..7c295df6e855 100644 --- a/sound/soc/sh/fsi.c +++ b/sound/soc/sh/fsi.c @@ -322,7 +322,7 @@ static int fsi_get_fifo_residue(struct fsi_priv *fsi, int is_play) /************************************************************************ - ctrl function + irq function ************************************************************************/ @@ -344,6 +344,35 @@ static void fsi_irq_disable(struct fsi_priv *fsi, int is_play) fsi_master_mask_set(master, IEMSK, data, 0); } +static u32 fsi_irq_get_status(struct fsi_master *master) +{ + return fsi_master_read(master, INT_ST); +} + +static void fsi_irq_clear_all_status(struct fsi_master *master) +{ + fsi_master_write(master, INT_ST, 0x0000000); +} + +static void fsi_irq_clear_status(struct fsi_priv *fsi) +{ + u32 data = 0; + struct fsi_master *master = fsi_get_master(fsi); + + data |= fsi_port_ab_io_bit(fsi, 0); + data |= fsi_port_ab_io_bit(fsi, 1); + + /* clear interrupt factor */ + fsi_master_mask_set(master, INT_ST, data, 0); +} + +/************************************************************************ + + + ctrl function + + +************************************************************************/ static void fsi_clk_ctrl(struct fsi_priv *fsi, int enable) { u32 val = fsi_is_port_a(fsi) ? (1 << 0) : (1 << 4); @@ -355,25 +384,17 @@ static void fsi_clk_ctrl(struct fsi_priv *fsi, int enable) fsi_master_mask_set(master, CLK_RST, val, 0); } -static void fsi_irq_init(struct fsi_priv *fsi, int is_play) +static void fsi_fifo_init(struct fsi_priv *fsi, int is_play) { - u32 data; u32 ctrl; - data = fsi_port_ab_io_bit(fsi, is_play); ctrl = is_play ? DOFF_CTL : DIFF_CTL; - /* set IMSK */ - fsi_irq_disable(fsi, is_play); - /* set interrupt generation factor */ fsi_reg_write(fsi, ctrl, IRQ_HALF); /* clear FIFO */ fsi_reg_mask_set(fsi, ctrl, FIFO_CLR, FIFO_CLR); - - /* clear interrupt factor */ - fsi_master_mask_set(fsi_get_master(fsi), INT_ST, data, 0); } static void fsi_soft_all_reset(struct fsi_master *master) @@ -559,7 +580,7 @@ static int fsi_data_pop(struct fsi_priv *fsi, int startup) static irqreturn_t fsi_interrupt(int irq, void *data) { struct fsi_master *master = data; - u32 int_st = fsi_master_read(master, INT_ST); + u32 int_st = fsi_irq_get_status(master); /* clear irq status */ fsi_master_mask_set(master, SOFT_RST, IR, 0); @@ -574,7 +595,7 @@ static irqreturn_t fsi_interrupt(int irq, void *data) if (int_st & INT_B_IN) fsi_data_pop(&master->fsib, 0); - fsi_master_write(master, INT_ST, 0x0000000); + fsi_irq_clear_all_status(master); return IRQ_HANDLED; } @@ -699,8 +720,12 @@ static int fsi_dai_startup(struct snd_pcm_substream *substream, if (is_master) fsi_clk_ctrl(fsi, 1); - /* irq setting */ - fsi_irq_init(fsi, is_play); + /* irq clear */ + fsi_irq_disable(fsi, is_play); + fsi_irq_clear_status(fsi); + + /* fifo init */ + fsi_fifo_init(fsi, is_play); return ret; } |