diff options
Diffstat (limited to 'sound/soc/sh/fsi.c')
| -rw-r--r-- | sound/soc/sh/fsi.c | 60 |
1 files changed, 55 insertions, 5 deletions
diff --git a/sound/soc/sh/fsi.c b/sound/soc/sh/fsi.c index 4b09b3dfcc00..58c6bec642de 100644 --- a/sound/soc/sh/fsi.c +++ b/sound/soc/sh/fsi.c @@ -30,9 +30,11 @@ #define DIDT 0x0020 #define DODT 0x0024 #define MUTE_ST 0x0028 -#define REG_END MUTE_ST - +#define OUT_SEL 0x0030 +#define REG_END OUT_SEL +#define A_MST_CTLR 0x0180 +#define B_MST_CTLR 0x01A0 #define CPU_INT_ST 0x01F4 #define CPU_IEMSK 0x01F8 #define CPU_IMSK 0x01FC @@ -43,7 +45,7 @@ #define CLK_RST 0x0210 #define SOFT_RST 0x0214 #define FIFO_SZ 0x0218 -#define MREG_START CPU_INT_ST +#define MREG_START A_MST_CTLR #define MREG_END FIFO_SZ /* DO_FMT */ @@ -54,6 +56,7 @@ #define CR_I2S (0x3 << 4) #define CR_TDM (0x4 << 4) #define CR_TDM_D (0x5 << 4) +#define CR_SPDIF 0x00100120 /* DOFF_CTL */ /* DIFF_CTL */ @@ -69,6 +72,10 @@ #define ACKMD_MASK 0x00007000 #define BPFMD_MASK 0x00000700 +/* A/B MST_CTLR */ +#define BP (1 << 4) /* Fix the signal of Biphase output */ +#define SE (1 << 0) /* Fix the master clock */ + /* CLK_RST */ #define B_CLK 0x00000010 #define A_CLK 0x00000001 @@ -113,6 +120,8 @@ struct fsi_priv { int period_len; int buffer_len; int periods; + + u32 mst_ctrl; }; struct fsi_core { @@ -395,6 +404,29 @@ static void fsi_irq_clear_status(struct fsi_priv *fsi) /************************************************************************ + SPDIF master clock function + +These functions are used later FSI2 +************************************************************************/ +static void fsi_spdif_clk_ctrl(struct fsi_priv *fsi, int enable) +{ + struct fsi_master *master = fsi_get_master(fsi); + u32 val = BP | SE; + + if (master->core->ver < 2) { + pr_err("fsi: register access err (%s)\n", __func__); + return; + } + + if (enable) + fsi_master_mask_set(master, fsi->mst_ctrl, val, val); + else + fsi_master_mask_set(master, fsi->mst_ctrl, val, 0); +} + +/************************************************************************ + + ctrl function @@ -671,6 +703,7 @@ static int fsi_dai_startup(struct snd_pcm_substream *substream, { struct fsi_priv *fsi = fsi_get_priv(substream); u32 flags = fsi_get_info_flags(fsi); + struct fsi_master *master = fsi_get_master(fsi); u32 fmt; u32 reg; u32 data; @@ -732,6 +765,16 @@ static int fsi_dai_startup(struct snd_pcm_substream *substream, SH_FSI_GET_CH_O(flags) : SH_FSI_GET_CH_I(flags); data = CR_TDM_D | (fsi->chan - 1); break; + case SH_FSI_FMT_SPDIF: + if (master->core->ver < 2) { + dev_err(dai->dev, "This FSI can not use SPDIF\n"); + return -EINVAL; + } + data = CR_SPDIF; + fsi->chan = 2; + fsi_spdif_clk_ctrl(fsi, 1); + fsi_reg_mask_set(fsi, OUT_SEL, 0x0010, 0x0010); + break; default: dev_err(dai->dev, "unknown format.\n"); return -EINVAL; @@ -1071,14 +1114,21 @@ static int fsi_probe(struct platform_device *pdev) goto exit_kfree; } + /* master setting */ master->irq = irq; master->info = pdev->dev.platform_data; + master->core = (struct fsi_core *)id_entry->driver_data; + spin_lock_init(&master->lock); + + /* FSI A setting */ master->fsia.base = master->base; master->fsia.master = master; + master->fsia.mst_ctrl = A_MST_CTLR; + + /* FSI B setting */ master->fsib.base = master->base + 0x40; master->fsib.master = master; - master->core = (struct fsi_core *)id_entry->driver_data; - spin_lock_init(&master->lock); + master->fsib.mst_ctrl = B_MST_CTLR; pm_runtime_enable(&pdev->dev); pm_runtime_resume(&pdev->dev); |
