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Diffstat (limited to 'sound/soc/sh/fsi.c')
-rw-r--r--sound/soc/sh/fsi.c191
1 files changed, 135 insertions, 56 deletions
diff --git a/sound/soc/sh/fsi.c b/sound/soc/sh/fsi.c
index 8dc966f..3396a0d 100644
--- a/sound/soc/sh/fsi.c
+++ b/sound/soc/sh/fsi.c
@@ -41,14 +41,19 @@
#define MUTE_ST 0x0028
#define REG_END MUTE_ST
+
+#define CPU_INT_ST 0x01F4
+#define CPU_IEMSK 0x01F8
+#define CPU_IMSK 0x01FC
#define INT_ST 0x0200
#define IEMSK 0x0204
#define IMSK 0x0208
#define MUTE 0x020C
#define CLK_RST 0x0210
#define SOFT_RST 0x0214
-#define MREG_START INT_ST
-#define MREG_END SOFT_RST
+#define FIFO_SZ 0x0218
+#define MREG_START CPU_INT_ST
+#define MREG_END FIFO_SZ
/* DO_FMT */
/* DI_FMT */
@@ -80,6 +85,17 @@
#define INT_A_IN (1 << 4)
#define INT_A_OUT (1 << 0)
+/* SOFT_RST */
+#define PBSR (1 << 12) /* Port B Software Reset */
+#define PASR (1 << 8) /* Port A Software Reset */
+#define IR (1 << 4) /* Interrupt Reset */
+#define FSISR (1 << 0) /* Software Reset */
+
+/* FIFO_SZ */
+#define OUT_SZ_MASK 0x7
+#define BO_SZ_SHIFT 8
+#define AO_SZ_SHIFT 0
+
#define FSI_RATES SNDRV_PCM_RATE_8000_96000
#define FSI_FMTS (SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S16_LE)
@@ -105,11 +121,18 @@ struct fsi_priv {
int periods;
};
+struct fsi_regs {
+ u32 int_st;
+ u32 iemsk;
+ u32 imsk;
+};
+
struct fsi_master {
void __iomem *base;
int irq;
struct fsi_priv fsia;
struct fsi_priv fsib;
+ struct fsi_regs *regs;
struct sh_fsi_platform_info *info;
spinlock_t lock;
};
@@ -317,7 +340,7 @@ static int fsi_get_fifo_residue(struct fsi_priv *fsi, int is_play)
/************************************************************************
- ctrl function
+ irq function
************************************************************************/
@@ -326,8 +349,8 @@ static void fsi_irq_enable(struct fsi_priv *fsi, int is_play)
u32 data = fsi_port_ab_io_bit(fsi, is_play);
struct fsi_master *master = fsi_get_master(fsi);
- fsi_master_mask_set(master, IMSK, data, data);
- fsi_master_mask_set(master, IEMSK, data, data);
+ fsi_master_mask_set(master, master->regs->imsk, data, data);
+ fsi_master_mask_set(master, master->regs->iemsk, data, data);
}
static void fsi_irq_disable(struct fsi_priv *fsi, int is_play)
@@ -335,10 +358,39 @@ static void fsi_irq_disable(struct fsi_priv *fsi, int is_play)
u32 data = fsi_port_ab_io_bit(fsi, is_play);
struct fsi_master *master = fsi_get_master(fsi);
- fsi_master_mask_set(master, IMSK, data, 0);
- fsi_master_mask_set(master, IEMSK, data, 0);
+ fsi_master_mask_set(master, master->regs->imsk, data, 0);
+ fsi_master_mask_set(master, master->regs->iemsk, data, 0);
+}
+
+static u32 fsi_irq_get_status(struct fsi_master *master)
+{
+ return fsi_master_read(master, master->regs->int_st);
+}
+
+static void fsi_irq_clear_all_status(struct fsi_master *master)
+{
+ fsi_master_write(master, master->regs->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, master->regs->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);
@@ -350,41 +402,61 @@ 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,
+ struct snd_soc_dai *dai)
{
- u32 data;
- u32 ctrl;
+ struct fsi_master *master = fsi_get_master(fsi);
+ u32 ctrl, shift, i;
- data = fsi_port_ab_io_bit(fsi, is_play);
- ctrl = is_play ? DOFF_CTL : DIFF_CTL;
+ /* get on-chip RAM capacity */
+ shift = fsi_master_read(master, FIFO_SZ);
+ shift >>= fsi_is_port_a(fsi) ? AO_SZ_SHIFT : BO_SZ_SHIFT;
+ shift &= OUT_SZ_MASK;
+ fsi->fifo_max = 256 << shift;
+ dev_dbg(dai->dev, "fifo = %d words\n", fsi->fifo_max);
- /* set IMSK */
- fsi_irq_disable(fsi, is_play);
+ /*
+ * The maximum number of sample data varies depending
+ * on the number of channels selected for the format.
+ *
+ * FIFOs are used in 4-channel units in 3-channel mode
+ * and in 8-channel units in 5- to 7-channel mode
+ * meaning that more FIFOs than the required size of DPRAM
+ * are used.
+ *
+ * ex) if 256 words of DP-RAM is connected
+ * 1 channel: 256 (256 x 1 = 256)
+ * 2 channels: 128 (128 x 2 = 256)
+ * 3 channels: 64 ( 64 x 3 = 192)
+ * 4 channels: 64 ( 64 x 4 = 256)
+ * 5 channels: 32 ( 32 x 5 = 160)
+ * 6 channels: 32 ( 32 x 6 = 192)
+ * 7 channels: 32 ( 32 x 7 = 224)
+ * 8 channels: 32 ( 32 x 8 = 256)
+ */
+ for (i = 1; i < fsi->chan; i <<= 1)
+ fsi->fifo_max >>= 1;
+ dev_dbg(dai->dev, "%d channel %d store\n", fsi->chan, fsi->fifo_max);
+
+ ctrl = is_play ? DOFF_CTL : DIFF_CTL;
/* 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)
{
- u32 status = fsi_master_read(master, SOFT_RST);
-
/* port AB reset */
- status &= 0x000000ff;
- fsi_master_write(master, SOFT_RST, status);
+ fsi_master_mask_set(master, SOFT_RST, PASR | PBSR, 0);
mdelay(10);
/* soft reset */
- status &= 0x000000f0;
- fsi_master_write(master, SOFT_RST, status);
- status |= 0x00000001;
- fsi_master_write(master, SOFT_RST, status);
+ fsi_master_mask_set(master, SOFT_RST, FSISR, 0);
+ fsi_master_mask_set(master, SOFT_RST, FSISR, FSISR);
mdelay(10);
}
@@ -559,12 +631,11 @@ 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 status = fsi_master_read(master, SOFT_RST) & ~0x00000010;
- u32 int_st = fsi_master_read(master, INT_ST);
+ u32 int_st = fsi_irq_get_status(master);
/* clear irq status */
- fsi_master_write(master, SOFT_RST, status);
- fsi_master_write(master, SOFT_RST, status | 0x00000010);
+ fsi_master_mask_set(master, SOFT_RST, IR, 0);
+ fsi_master_mask_set(master, SOFT_RST, IR, IR);
if (int_st & INT_A_OUT)
fsi_data_push(&master->fsia, 0);
@@ -575,7 +646,7 @@ 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;
}
@@ -669,29 +740,6 @@ static int fsi_dai_startup(struct snd_pcm_substream *substream,
dev_err(dai->dev, "unknown format.\n");
return -EINVAL;
}
-
- switch (fsi->chan) {
- case 1:
- fsi->fifo_max = 256;
- break;
- case 2:
- fsi->fifo_max = 128;
- break;
- case 3:
- case 4:
- fsi->fifo_max = 64;
- break;
- case 5:
- case 6:
- case 7:
- case 8:
- fsi->fifo_max = 32;
- break;
- default:
- dev_err(dai->dev, "channel size error.\n");
- return -EINVAL;
- }
-
fsi_reg_write(fsi, reg, data);
/*
@@ -700,8 +748,12 @@ 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, dai);
return ret;
}
@@ -913,6 +965,7 @@ EXPORT_SYMBOL_GPL(fsi_soc_platform);
static int fsi_probe(struct platform_device *pdev)
{
struct fsi_master *master;
+ const struct platform_device_id *id_entry;
struct resource *res;
unsigned int irq;
int ret;
@@ -922,6 +975,12 @@ static int fsi_probe(struct platform_device *pdev)
return -ENODEV;
}
+ id_entry = pdev->id_entry;
+ if (!id_entry) {
+ dev_err(&pdev->dev, "unknown fsi device\n");
+ return -ENODEV;
+ }
+
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
irq = platform_get_irq(pdev, 0);
if (!res || (int)irq <= 0) {
@@ -950,6 +1009,7 @@ static int fsi_probe(struct platform_device *pdev)
master->fsia.master = master;
master->fsib.base = master->base + 0x40;
master->fsib.master = master;
+ master->regs = (struct fsi_regs *)id_entry->driver_data;
spin_lock_init(&master->lock);
pm_runtime_enable(&pdev->dev);
@@ -962,7 +1022,8 @@ static int fsi_probe(struct platform_device *pdev)
fsi_soft_all_reset(master);
- ret = request_irq(irq, &fsi_interrupt, IRQF_DISABLED, "fsi", master);
+ ret = request_irq(irq, &fsi_interrupt, IRQF_DISABLED,
+ id_entry->name, master);
if (ret) {
dev_err(&pdev->dev, "irq request err\n");
goto exit_iounmap;
@@ -1029,6 +1090,23 @@ static struct dev_pm_ops fsi_pm_ops = {
.runtime_resume = fsi_runtime_nop,
};
+static struct fsi_regs fsi_regs = {
+ .int_st = INT_ST,
+ .iemsk = IEMSK,
+ .imsk = IMSK,
+};
+
+static struct fsi_regs fsi2_regs = {
+ .int_st = CPU_INT_ST,
+ .iemsk = CPU_IEMSK,
+ .imsk = CPU_IMSK,
+};
+
+static struct platform_device_id fsi_id_table[] = {
+ { "sh_fsi", (kernel_ulong_t)&fsi_regs },
+ { "sh_fsi2", (kernel_ulong_t)&fsi2_regs },
+};
+
static struct platform_driver fsi_driver = {
.driver = {
.name = "sh_fsi",
@@ -1036,6 +1114,7 @@ static struct platform_driver fsi_driver = {
},
.probe = fsi_probe,
.remove = fsi_remove,
+ .id_table = fsi_id_table,
};
static int __init fsi_mobile_init(void)
generated by cgit v1.1 at 2024-12-26 22:17:39 +0000