config SND_S3C24XX_SOC_I2S
tristate
+config SND_S3C_I2SV2_SOC
+ tristate
+
config SND_S3C2412_SOC_I2S
tristate
+ select SND_S3C_I2SV2_SOC
config SND_S3C2443_SOC_AC97
tristate
snd-soc-s3c24xx-i2s-objs := s3c24xx-i2s.o
snd-soc-s3c2412-i2s-objs := s3c2412-i2s.o
snd-soc-s3c2443-ac97-objs := s3c2443-ac97.o
+snd-soc-s3c-i2s-v2-objs := s3c-i2s-v2.o
obj-$(CONFIG_SND_S3C24XX_SOC) += snd-soc-s3c24xx.o
obj-$(CONFIG_SND_S3C24XX_SOC_I2S) += snd-soc-s3c24xx-i2s.o
obj-$(CONFIG_SND_S3C2443_SOC_AC97) += snd-soc-s3c2443-ac97.o
obj-$(CONFIG_SND_S3C2412_SOC_I2S) += snd-soc-s3c2412-i2s.o
+obj-$(CONFIG_SND_S3C_I2SV2_SOC) += snd-soc-s3c-i2s-v2.o
# S3C24XX Machine Support
snd-soc-jive-wm8750-objs := jive_wm8750.o
struct snd_soc_pcm_runtime *rtd = substream->private_data;
struct snd_soc_dai *codec_dai = rtd->dai->codec_dai;
struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
- struct s3c2412_rate_calc div;
+ struct s3c_i2sv2_rate_calc div;
unsigned int clk = 0;
int ret = 0;
break;
}
- s3c2412_iis_calc_rate(&div, NULL, params_rate(params),
- s3c2412_get_iisclk());
+ s3c_i2sv2_calc_rate(&div, NULL, params_rate(params),
+ s3c2412_get_iisclk());
/* set codec DAI configuration */
ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_I2S |
--- /dev/null
+/* sound/soc/s3c24xx/s3c-i2c-v2.c
+ *
+ * ALSA Soc Audio Layer - I2S core for newer Samsung SoCs.
+ *
+ * Copyright (c) 2006 Wolfson Microelectronics PLC.
+ * Graeme Gregory graeme.gregory@wolfsonmicro.com
+ * linux@wolfsonmicro.com
+ *
+ * Copyright (c) 2008, 2007, 2004-2005 Simtec Electronics
+ * http://armlinux.simtec.co.uk/
+ * Ben Dooks <ben@simtec.co.uk>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ */
+
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/device.h>
+#include <linux/delay.h>
+#include <linux/clk.h>
+#include <linux/kernel.h>
+#include <linux/io.h>
+
+#include <sound/core.h>
+#include <sound/pcm.h>
+#include <sound/pcm_params.h>
+#include <sound/initval.h>
+#include <sound/soc.h>
+
+#include <plat/regs-s3c2412-iis.h>
+
+#include <plat/audio.h>
+#include <mach/dma.h>
+
+#include "s3c-i2s-v2.h"
+
+#define S3C2412_I2S_DEBUG_CON 0
+#define S3C2412_I2S_DEBUG 0
+
+#if S3C2412_I2S_DEBUG
+#define DBG(x...) printk(KERN_INFO x)
+#else
+#define DBG(x...) do { } while (0)
+#endif
+
+static inline struct s3c_i2sv2_info *to_info(struct snd_soc_dai *cpu_dai)
+{
+ return cpu_dai->private_data;
+}
+
+#define bit_set(v, b) (((v) & (b)) ? 1 : 0)
+
+#if S3C2412_I2S_DEBUG_CON
+static void dbg_showcon(const char *fn, u32 con)
+{
+ printk(KERN_DEBUG "%s: LRI=%d, TXFEMPT=%d, RXFEMPT=%d, TXFFULL=%d, RXFFULL=%d\n", fn,
+ bit_set(con, S3C2412_IISCON_LRINDEX),
+ bit_set(con, S3C2412_IISCON_TXFIFO_EMPTY),
+ bit_set(con, S3C2412_IISCON_RXFIFO_EMPTY),
+ bit_set(con, S3C2412_IISCON_TXFIFO_FULL),
+ bit_set(con, S3C2412_IISCON_RXFIFO_FULL));
+
+ printk(KERN_DEBUG "%s: PAUSE: TXDMA=%d, RXDMA=%d, TXCH=%d, RXCH=%d\n",
+ fn,
+ bit_set(con, S3C2412_IISCON_TXDMA_PAUSE),
+ bit_set(con, S3C2412_IISCON_RXDMA_PAUSE),
+ bit_set(con, S3C2412_IISCON_TXCH_PAUSE),
+ bit_set(con, S3C2412_IISCON_RXCH_PAUSE));
+ printk(KERN_DEBUG "%s: ACTIVE: TXDMA=%d, RXDMA=%d, IIS=%d\n", fn,
+ bit_set(con, S3C2412_IISCON_TXDMA_ACTIVE),
+ bit_set(con, S3C2412_IISCON_RXDMA_ACTIVE),
+ bit_set(con, S3C2412_IISCON_IIS_ACTIVE));
+}
+#else
+static inline void dbg_showcon(const char *fn, u32 con)
+{
+}
+#endif
+
+
+/* Turn on or off the transmission path. */
+void s3c2412_snd_txctrl(struct s3c_i2sv2_info *i2s, int on)
+{
+ void __iomem *regs = i2s->regs;
+ u32 fic, con, mod;
+
+ DBG("%s(%d)\n", __func__, on);
+
+ fic = readl(regs + S3C2412_IISFIC);
+ con = readl(regs + S3C2412_IISCON);
+ mod = readl(regs + S3C2412_IISMOD);
+
+ DBG("%s: IIS: CON=%x MOD=%x FIC=%x\n", __func__, con, mod, fic);
+
+ if (on) {
+ con |= S3C2412_IISCON_TXDMA_ACTIVE | S3C2412_IISCON_IIS_ACTIVE;
+ con &= ~S3C2412_IISCON_TXDMA_PAUSE;
+ con &= ~S3C2412_IISCON_TXCH_PAUSE;
+
+ switch (mod & S3C2412_IISMOD_MODE_MASK) {
+ case S3C2412_IISMOD_MODE_TXONLY:
+ case S3C2412_IISMOD_MODE_TXRX:
+ /* do nothing, we are in the right mode */
+ break;
+
+ case S3C2412_IISMOD_MODE_RXONLY:
+ mod &= ~S3C2412_IISMOD_MODE_MASK;
+ mod |= S3C2412_IISMOD_MODE_TXRX;
+ break;
+
+ default:
+ dev_err(i2s->dev, "TXEN: Invalid MODE in IISMOD\n");
+ }
+
+ writel(con, regs + S3C2412_IISCON);
+ writel(mod, regs + S3C2412_IISMOD);
+ } else {
+ /* Note, we do not have any indication that the FIFO problems
+ * tha the S3C2410/2440 had apply here, so we should be able
+ * to disable the DMA and TX without resetting the FIFOS.
+ */
+
+ con |= S3C2412_IISCON_TXDMA_PAUSE;
+ con |= S3C2412_IISCON_TXCH_PAUSE;
+ con &= ~S3C2412_IISCON_TXDMA_ACTIVE;
+
+ switch (mod & S3C2412_IISMOD_MODE_MASK) {
+ case S3C2412_IISMOD_MODE_TXRX:
+ mod &= ~S3C2412_IISMOD_MODE_MASK;
+ mod |= S3C2412_IISMOD_MODE_RXONLY;
+ break;
+
+ case S3C2412_IISMOD_MODE_TXONLY:
+ mod &= ~S3C2412_IISMOD_MODE_MASK;
+ con &= ~S3C2412_IISCON_IIS_ACTIVE;
+ break;
+
+ default:
+ dev_err(i2s->dev, "TXDIS: Invalid MODE in IISMOD\n");
+ }
+
+ writel(mod, regs + S3C2412_IISMOD);
+ writel(con, regs + S3C2412_IISCON);
+ }
+
+ fic = readl(regs + S3C2412_IISFIC);
+ dbg_showcon(__func__, con);
+ DBG("%s: IIS: CON=%x MOD=%x FIC=%x\n", __func__, con, mod, fic);
+}
+EXPORT_SYMBOL_GPL(s3c2412_snd_txctrl);
+
+void s3c2412_snd_rxctrl(struct s3c_i2sv2_info *i2s, int on)
+{
+ void __iomem *regs = i2s->regs;
+ u32 fic, con, mod;
+
+ DBG("%s(%d)\n", __func__, on);
+
+ fic = readl(regs + S3C2412_IISFIC);
+ con = readl(regs + S3C2412_IISCON);
+ mod = readl(regs + S3C2412_IISMOD);
+
+ DBG("%s: IIS: CON=%x MOD=%x FIC=%x\n", __func__, con, mod, fic);
+
+ if (on) {
+ con |= S3C2412_IISCON_RXDMA_ACTIVE | S3C2412_IISCON_IIS_ACTIVE;
+ con &= ~S3C2412_IISCON_RXDMA_PAUSE;
+ con &= ~S3C2412_IISCON_RXCH_PAUSE;
+
+ switch (mod & S3C2412_IISMOD_MODE_MASK) {
+ case S3C2412_IISMOD_MODE_TXRX:
+ case S3C2412_IISMOD_MODE_RXONLY:
+ /* do nothing, we are in the right mode */
+ break;
+
+ case S3C2412_IISMOD_MODE_TXONLY:
+ mod &= ~S3C2412_IISMOD_MODE_MASK;
+ mod |= S3C2412_IISMOD_MODE_TXRX;
+ break;
+
+ default:
+ dev_err(i2s->dev, "RXEN: Invalid MODE in IISMOD\n");
+ }
+
+ writel(mod, regs + S3C2412_IISMOD);
+ writel(con, regs + S3C2412_IISCON);
+ } else {
+ /* See txctrl notes on FIFOs. */
+
+ con &= ~S3C2412_IISCON_RXDMA_ACTIVE;
+ con |= S3C2412_IISCON_RXDMA_PAUSE;
+ con |= S3C2412_IISCON_RXCH_PAUSE;
+
+ switch (mod & S3C2412_IISMOD_MODE_MASK) {
+ case S3C2412_IISMOD_MODE_RXONLY:
+ con &= ~S3C2412_IISCON_IIS_ACTIVE;
+ mod &= ~S3C2412_IISMOD_MODE_MASK;
+ break;
+
+ case S3C2412_IISMOD_MODE_TXRX:
+ mod &= ~S3C2412_IISMOD_MODE_MASK;
+ mod |= S3C2412_IISMOD_MODE_TXONLY;
+ break;
+
+ default:
+ dev_err(i2s->dev, "RXEN: Invalid MODE in IISMOD\n");
+ }
+
+ writel(con, regs + S3C2412_IISCON);
+ writel(mod, regs + S3C2412_IISMOD);
+ }
+
+ fic = readl(regs + S3C2412_IISFIC);
+ DBG("%s: IIS: CON=%x MOD=%x FIC=%x\n", __func__, con, mod, fic);
+}
+EXPORT_SYMBOL_GPL(s3c2412_snd_rxctrl);
+
+/*
+ * Wait for the LR signal to allow synchronisation to the L/R clock
+ * from the codec. May only be needed for slave mode.
+ */
+static int s3c2412_snd_lrsync(struct s3c_i2sv2_info *i2s)
+{
+ u32 iiscon;
+ unsigned long timeout = jiffies + msecs_to_jiffies(5);
+
+ DBG("Entered %s\n", __func__);
+
+ while (1) {
+ iiscon = readl(i2s->regs + S3C2412_IISCON);
+ if (iiscon & S3C2412_IISCON_LRINDEX)
+ break;
+
+ if (timeout < jiffies) {
+ printk(KERN_ERR "%s: timeout\n", __func__);
+ return -ETIMEDOUT;
+ }
+ }
+
+ return 0;
+}
+
+/*
+ * Set S3C2412 I2S DAI format
+ */
+static int s3c2412_i2s_set_fmt(struct snd_soc_dai *cpu_dai,
+ unsigned int fmt)
+{
+ struct s3c_i2sv2_info *i2s = to_info(cpu_dai);
+ u32 iismod;
+
+ DBG("Entered %s\n", __func__);
+
+ iismod = readl(i2s->regs + S3C2412_IISMOD);
+ DBG("hw_params r: IISMOD: %x \n", iismod);
+
+#if defined(CONFIG_CPU_S3C2412) || defined(CONFIG_CPU_S3C2413)
+#define IISMOD_MASTER_MASK S3C2412_IISMOD_MASTER_MASK
+#define IISMOD_SLAVE S3C2412_IISMOD_SLAVE
+#define IISMOD_MASTER S3C2412_IISMOD_MASTER_INTERNAL
+#endif
+
+#if defined(CONFIG_PLAT_S3C64XX)
+/* From Rev1.1 datasheet, we have two master and two slave modes:
+ * IMS[11:10]:
+ * 00 = master mode, fed from PCLK
+ * 01 = master mode, fed from CLKAUDIO
+ * 10 = slave mode, using PCLK
+ * 11 = slave mode, using I2SCLK
+ */
+#define IISMOD_MASTER_MASK (1 << 11)
+#define IISMOD_SLAVE (1 << 11)
+#define IISMOD_MASTER (0x0)
+#endif
+
+ switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
+ case SND_SOC_DAIFMT_CBM_CFM:
+ i2s->master = 0;
+ iismod &= ~IISMOD_MASTER_MASK;
+ iismod |= IISMOD_SLAVE;
+ break;
+ case SND_SOC_DAIFMT_CBS_CFS:
+ i2s->master = 1;
+ iismod &= ~IISMOD_MASTER_MASK;
+ iismod |= IISMOD_MASTER;
+ break;
+ default:
+ DBG("unknwon master/slave format\n");
+ return -EINVAL;
+ }
+
+ iismod &= ~S3C2412_IISMOD_SDF_MASK;
+
+ switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
+ case SND_SOC_DAIFMT_RIGHT_J:
+ iismod |= S3C2412_IISMOD_SDF_MSB;
+ break;
+ case SND_SOC_DAIFMT_LEFT_J:
+ iismod |= S3C2412_IISMOD_SDF_LSB;
+ break;
+ case SND_SOC_DAIFMT_I2S:
+ iismod |= S3C2412_IISMOD_SDF_IIS;
+ break;
+ default:
+ DBG("Unknown data format\n");
+ return -EINVAL;
+ }
+
+ writel(iismod, i2s->regs + S3C2412_IISMOD);
+ DBG("hw_params w: IISMOD: %x \n", iismod);
+ return 0;
+}
+
+static int s3c2412_i2s_hw_params(struct snd_pcm_substream *substream,
+ struct snd_pcm_hw_params *params,
+ struct snd_soc_dai *socdai)
+{
+ struct snd_soc_pcm_runtime *rtd = substream->private_data;
+ struct snd_soc_dai_link *dai = rtd->dai;
+ struct s3c_i2sv2_info *i2s = to_info(dai->cpu_dai);
+ u32 iismod;
+
+ DBG("Entered %s\n", __func__);
+
+ if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
+ dai->cpu_dai->dma_data = i2s->dma_playback;
+ else
+ dai->cpu_dai->dma_data = i2s->dma_capture;
+
+ /* Working copies of register */
+ iismod = readl(i2s->regs + S3C2412_IISMOD);
+ DBG("%s: r: IISMOD: %x\n", __func__, iismod);
+
+ switch (params_format(params)) {
+ case SNDRV_PCM_FORMAT_S8:
+ iismod |= S3C2412_IISMOD_8BIT;
+ break;
+ case SNDRV_PCM_FORMAT_S16_LE:
+ iismod &= ~S3C2412_IISMOD_8BIT;
+ break;
+ }
+
+ writel(iismod, i2s->regs + S3C2412_IISMOD);
+ DBG("%s: w: IISMOD: %x\n", __func__, iismod);
+ return 0;
+}
+
+static int s3c2412_i2s_trigger(struct snd_pcm_substream *substream, int cmd,
+ struct snd_soc_dai *dai)
+{
+ struct snd_soc_pcm_runtime *rtd = substream->private_data;
+ struct s3c_i2sv2_info *i2s = to_info(rtd->dai->cpu_dai);
+ int capture = (substream->stream == SNDRV_PCM_STREAM_CAPTURE);
+ unsigned long irqs;
+ int ret = 0;
+
+ DBG("Entered %s\n", __func__);
+
+ switch (cmd) {
+ case SNDRV_PCM_TRIGGER_START:
+ /* On start, ensure that the FIFOs are cleared and reset. */
+
+ writel(capture ? S3C2412_IISFIC_RXFLUSH : S3C2412_IISFIC_TXFLUSH,
+ i2s->regs + S3C2412_IISFIC);
+
+ /* clear again, just in case */
+ writel(0x0, i2s->regs + S3C2412_IISFIC);
+
+ case SNDRV_PCM_TRIGGER_RESUME:
+ case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
+ if (!i2s->master) {
+ ret = s3c2412_snd_lrsync(i2s);
+ if (ret)
+ goto exit_err;
+ }
+
+ local_irq_save(irqs);
+
+ if (capture)
+ s3c2412_snd_rxctrl(i2s, 1);
+ else
+ s3c2412_snd_txctrl(i2s, 1);
+
+ local_irq_restore(irqs);
+ break;
+
+ case SNDRV_PCM_TRIGGER_STOP:
+ case SNDRV_PCM_TRIGGER_SUSPEND:
+ case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
+ local_irq_save(irqs);
+
+ if (capture)
+ s3c2412_snd_rxctrl(i2s, 0);
+ else
+ s3c2412_snd_txctrl(i2s, 0);
+
+ local_irq_restore(irqs);
+ break;
+ default:
+ ret = -EINVAL;
+ break;
+ }
+
+exit_err:
+ return ret;
+}
+
+/*
+ * Set S3C2412 Clock dividers
+ */
+static int s3c2412_i2s_set_clkdiv(struct snd_soc_dai *cpu_dai,
+ int div_id, int div)
+{
+ struct s3c_i2sv2_info *i2s = to_info(cpu_dai);
+ u32 reg;
+
+ DBG("%s(%p, %d, %d)\n", __func__, cpu_dai, div_id, div);
+
+ switch (div_id) {
+ case S3C_I2SV2_DIV_BCLK:
+ reg = readl(i2s->regs + S3C2412_IISMOD);
+ reg &= ~S3C2412_IISMOD_BCLK_MASK;
+ writel(reg | div, i2s->regs + S3C2412_IISMOD);
+
+ DBG("%s: MOD=%08x\n", __func__, readl(i2s->regs + S3C2412_IISMOD));
+ break;
+
+ case S3C_I2SV2_DIV_RCLK:
+ if (div > 3) {
+ /* convert value to bit field */
+
+ switch (div) {
+ case 256:
+ div = S3C2412_IISMOD_RCLK_256FS;
+ break;
+
+ case 384:
+ div = S3C2412_IISMOD_RCLK_384FS;
+ break;
+
+ case 512:
+ div = S3C2412_IISMOD_RCLK_512FS;
+ break;
+
+ case 768:
+ div = S3C2412_IISMOD_RCLK_768FS;
+ break;
+
+ default:
+ return -EINVAL;
+ }
+ }
+
+ reg = readl(i2s->regs + S3C2412_IISMOD);
+ reg &= ~S3C2412_IISMOD_RCLK_MASK;
+ writel(reg | div, i2s->regs + S3C2412_IISMOD);
+ DBG("%s: MOD=%08x\n", __func__, readl(i2s->regs + S3C2412_IISMOD));
+ break;
+
+ case S3C_I2SV2_DIV_PRESCALER:
+ if (div >= 0) {
+ writel((div << 8) | S3C2412_IISPSR_PSREN,
+ i2s->regs + S3C2412_IISPSR);
+ } else {
+ writel(0x0, i2s->regs + S3C2412_IISPSR);
+ }
+ DBG("%s: PSR=%08x\n", __func__, readl(i2s->regs + S3C2412_IISPSR));
+ break;
+
+ default:
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+/* default table of all avaialable root fs divisors */
+static unsigned int iis_fs_tab[] = { 256, 512, 384, 768 };
+
+int s3c2412_iis_calc_rate(struct s3c_i2sv2_rate_calc *info,
+ unsigned int *fstab,
+ unsigned int rate, struct clk *clk)
+{
+ unsigned long clkrate = clk_get_rate(clk);
+ unsigned int div;
+ unsigned int fsclk;
+ unsigned int actual;
+ unsigned int fs;
+ unsigned int fsdiv;
+ signed int deviation = 0;
+ unsigned int best_fs = 0;
+ unsigned int best_div = 0;
+ unsigned int best_rate = 0;
+ unsigned int best_deviation = INT_MAX;
+
+ if (fstab == NULL)
+ fstab = iis_fs_tab;
+
+ for (fs = 0; fs < ARRAY_SIZE(iis_fs_tab); fs++) {
+ fsdiv = iis_fs_tab[fs];
+
+ fsclk = clkrate / fsdiv;
+ div = fsclk / rate;
+
+ if ((fsclk % rate) > (rate / 2))
+ div++;
+
+ if (div <= 1)
+ continue;
+
+ actual = clkrate / (fsdiv * div);
+ deviation = actual - rate;
+
+ printk(KERN_DEBUG "%dfs: div %d => result %d, deviation %d\n",
+ fsdiv, div, actual, deviation);
+
+ deviation = abs(deviation);
+
+ if (deviation < best_deviation) {
+ best_fs = fsdiv;
+ best_div = div;
+ best_rate = actual;
+ best_deviation = deviation;
+ }
+
+ if (deviation == 0)
+ break;
+ }
+
+ printk(KERN_DEBUG "best: fs=%d, div=%d, rate=%d\n",
+ best_fs, best_div, best_rate);
+
+ info->fs_div = best_fs;
+ info->clk_div = best_div;
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(s3c2412_iis_calc_rate);
+
+int s3c_i2sv2_probe(struct platform_device *pdev,
+ struct snd_soc_dai *dai,
+ struct s3c_i2sv2_info *i2s,
+ unsigned long base)
+{
+ struct device *dev = &pdev->dev;
+
+ i2s->dev = dev;
+
+ /* record our i2s structure for later use in the callbacks */
+ dai->private_data = i2s;
+
+ i2s->regs = ioremap(base, 0x100);
+ if (i2s->regs == NULL) {
+ dev_err(dev, "cannot ioremap registers\n");
+ return -ENXIO;
+ }
+
+ i2s->iis_pclk = clk_get(dev, "iis");
+ if (i2s->iis_pclk == NULL) {
+ DBG("failed to get iis_clock\n");
+ iounmap(i2s->regs);
+ return -ENOENT;
+ }
+
+ clk_enable(i2s->iis_pclk);
+
+ s3c2412_snd_txctrl(i2s, 0);
+ s3c2412_snd_rxctrl(i2s, 0);
+
+ return 0;
+}
+
+EXPORT_SYMBOL_GPL(s3c_i2sv2_probe);
+
+#ifdef CONFIG_PM
+static int s3c2412_i2s_suspend(struct snd_soc_dai *dai)
+{
+ struct s3c_i2sv2_info *i2s = to_info(dai);
+ u32 iismod;
+
+ if (dai->active) {
+ i2s->suspend_iismod = readl(i2s->regs + S3C2412_IISMOD);
+ i2s->suspend_iiscon = readl(i2s->regs + S3C2412_IISCON);
+ i2s->suspend_iispsr = readl(i2s->regs + S3C2412_IISPSR);
+
+ /* some basic suspend checks */
+
+ iismod = readl(i2s->regs + S3C2412_IISMOD);
+
+ if (iismod & S3C2412_IISCON_RXDMA_ACTIVE)
+ pr_warning("%s: RXDMA active?\n", __func__);
+
+ if (iismod & S3C2412_IISCON_TXDMA_ACTIVE)
+ pr_warning("%s: TXDMA active?\n", __func__);
+
+ if (iismod & S3C2412_IISCON_IIS_ACTIVE)
+ pr_warning("%s: IIS active\n", __func__);
+ }
+
+ return 0;
+}
+
+static int s3c2412_i2s_resume(struct snd_soc_dai *dai)
+{
+ struct s3c_i2sv2_info *i2s = to_info(dai);
+
+ pr_info("dai_active %d, IISMOD %08x, IISCON %08x\n",
+ dai->active, i2s->suspend_iismod, i2s->suspend_iiscon);
+
+ if (dai->active) {
+ writel(i2s->suspend_iiscon, i2s->regs + S3C2412_IISCON);
+ writel(i2s->suspend_iismod, i2s->regs + S3C2412_IISMOD);
+ writel(i2s->suspend_iispsr, i2s->regs + S3C2412_IISPSR);
+
+ writel(S3C2412_IISFIC_RXFLUSH | S3C2412_IISFIC_TXFLUSH,
+ i2s->regs + S3C2412_IISFIC);
+
+ ndelay(250);
+ writel(0x0, i2s->regs + S3C2412_IISFIC);
+ }
+
+ return 0;
+}
+#else
+#define s3c2412_i2s_suspend NULL
+#define s3c2412_i2s_resume NULL
+#endif
+
+int s3c_i2sv2_register_dai(struct snd_soc_dai *dai)
+{
+ dai->ops.trigger = s3c2412_i2s_trigger;
+ dai->ops.hw_params = s3c2412_i2s_hw_params;
+ dai->ops.set_fmt = s3c2412_i2s_set_fmt;
+ dai->ops.set_clkdiv = s3c2412_i2s_set_clkdiv;
+
+ dai->suspend = s3c2412_i2s_suspend;
+ dai->resume = s3c2412_i2s_resume;
+
+ return snd_soc_register_dai(dai);
+}
+
+EXPORT_SYMBOL_GPL(s3c_i2sv2_register_dai);
--- /dev/null
+/* sound/soc/s3c24xx/s3c-i2s-v2.h
+ *
+ * ALSA Soc Audio Layer - S3C_I2SV2 I2S driver
+ *
+ * Copyright (c) 2007 Simtec Electronics
+ * http://armlinux.simtec.co.uk/
+ * Ben Dooks <ben@simtec.co.uk>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+*/
+
+/* This code is the core support for the I2S block found in a number of
+ * Samsung SoC devices which is unofficially named I2S-V2. Currently the
+ * S3C2412 and the S3C64XX series use this block to provide 1 or 2 I2S
+ * channels via configurable GPIO.
+ */
+
+#ifndef __SND_SOC_S3C24XX_S3C_I2SV2_I2S_H
+#define __SND_SOC_S3C24XX_S3C_I2SV2_I2S_H __FILE__
+
+#define S3C_I2SV2_DIV_BCLK (1)
+#define S3C_I2SV2_DIV_RCLK (2)
+#define S3C_I2SV2_DIV_PRESCALER (3)
+
+/**
+ * struct s3c_i2sv2_info - S3C I2S-V2 information
+ * @dev: The parent device passed to use from the probe.
+ * @regs: The pointer to the device registe block.
+ * @master: True if the I2S core is the I2S bit clock master.
+ * @dma_playback: DMA information for playback channel.
+ * @dma_capture: DMA information for capture channel.
+ * @suspend_iismod: PM save for the IISMOD register.
+ * @suspend_iiscon: PM save for the IISCON register.
+ * @suspend_iispsr: PM save for the IISPSR register.
+ *
+ * This is the private codec state for the hardware associated with an
+ * I2S channel such as the register mappings and clock sources.
+ */
+struct s3c_i2sv2_info {
+ struct device *dev;
+ void __iomem *regs;
+
+ struct clk *iis_pclk;
+ struct clk *iis_cclk;
+ struct clk *iis_clk;
+
+ unsigned char master;
+
+ struct s3c24xx_pcm_dma_params *dma_playback;
+ struct s3c24xx_pcm_dma_params *dma_capture;
+
+ u32 suspend_iismod;
+ u32 suspend_iiscon;
+ u32 suspend_iispsr;
+};
+
+struct s3c_i2sv2_rate_calc {
+ unsigned int clk_div; /* for prescaler */
+ unsigned int fs_div; /* for root frame clock */
+};
+
+extern int s3c_i2sv2_iis_calc_rate(struct s3c_i2sv2_rate_calc *info,
+ unsigned int *fstab,
+ unsigned int rate, struct clk *clk);
+
+/**
+ * s3c_i2sv2_probe - probe for i2s device helper
+ * @pdev: The platform device supplied to the original probe.
+ * @dai: The ASoC DAI structure supplied to the original probe.
+ * @i2s: Our local i2s structure to fill in.
+ * @base: The base address for the registers.
+ */
+extern int s3c_i2sv2_probe(struct platform_device *pdev,
+ struct snd_soc_dai *dai,
+ struct s3c_i2sv2_info *i2s,
+ unsigned long base);
+
+/**
+ * s3c_i2sv2_register_dai - register dai with soc core
+ * @dai: The snd_soc_dai structure to register
+ *
+ * Fill in any missing fields and then register the given dai with the
+ * soc core.
+ */
+extern int s3c_i2sv2_register_dai(struct snd_soc_dai *dai);
+
+#endif /* __SND_SOC_S3C24XX_S3C_I2SV2_I2S_H */
#include <plat/regs-s3c2412-iis.h>
-#include <mach/regs-gpio.h>
+#include <plat/regs-gpio.h>
#include <plat/audio.h>
#include <mach/dma.h>
#include "s3c2412-i2s.h"
#define S3C2412_I2S_DEBUG 0
-#define S3C2412_I2S_DEBUG_CON 0
#if S3C2412_I2S_DEBUG
#define DBG(x...) printk(KERN_INFO x)
.dma_size = 4,
};
-struct s3c2412_i2s_info {
- struct device *dev;
- void __iomem *regs;
- struct clk *iis_clk;
- struct clk *iis_pclk;
- struct clk *iis_cclk;
-
- u32 suspend_iismod;
- u32 suspend_iiscon;
- u32 suspend_iispsr;
-};
-
-static struct s3c2412_i2s_info s3c2412_i2s;
-
-#define bit_set(v, b) (((v) & (b)) ? 1 : 0)
-
-#if S3C2412_I2S_DEBUG_CON
-static void dbg_showcon(const char *fn, u32 con)
-{
- printk(KERN_DEBUG "%s: LRI=%d, TXFEMPT=%d, RXFEMPT=%d, TXFFULL=%d, RXFFULL=%d\n", fn,
- bit_set(con, S3C2412_IISCON_LRINDEX),
- bit_set(con, S3C2412_IISCON_TXFIFO_EMPTY),
- bit_set(con, S3C2412_IISCON_RXFIFO_EMPTY),
- bit_set(con, S3C2412_IISCON_TXFIFO_FULL),
- bit_set(con, S3C2412_IISCON_RXFIFO_FULL));
-
- printk(KERN_DEBUG "%s: PAUSE: TXDMA=%d, RXDMA=%d, TXCH=%d, RXCH=%d\n",
- fn,
- bit_set(con, S3C2412_IISCON_TXDMA_PAUSE),
- bit_set(con, S3C2412_IISCON_RXDMA_PAUSE),
- bit_set(con, S3C2412_IISCON_TXCH_PAUSE),
- bit_set(con, S3C2412_IISCON_RXCH_PAUSE));
- printk(KERN_DEBUG "%s: ACTIVE: TXDMA=%d, RXDMA=%d, IIS=%d\n", fn,
- bit_set(con, S3C2412_IISCON_TXDMA_ACTIVE),
- bit_set(con, S3C2412_IISCON_RXDMA_ACTIVE),
- bit_set(con, S3C2412_IISCON_IIS_ACTIVE));
-}
-#else
-static inline void dbg_showcon(const char *fn, u32 con)
-{
-}
-#endif
-
-/* Turn on or off the transmission path. */
-static void s3c2412_snd_txctrl(int on)
-{
- struct s3c2412_i2s_info *i2s = &s3c2412_i2s;
- void __iomem *regs = i2s->regs;
- u32 fic, con, mod;
-
- DBG("%s(%d)\n", __func__, on);
-
- fic = readl(regs + S3C2412_IISFIC);
- con = readl(regs + S3C2412_IISCON);
- mod = readl(regs + S3C2412_IISMOD);
-
- DBG("%s: IIS: CON=%x MOD=%x FIC=%x\n", __func__, con, mod, fic);
-
- if (on) {
- con |= S3C2412_IISCON_TXDMA_ACTIVE | S3C2412_IISCON_IIS_ACTIVE;
- con &= ~S3C2412_IISCON_TXDMA_PAUSE;
- con &= ~S3C2412_IISCON_TXCH_PAUSE;
-
- switch (mod & S3C2412_IISMOD_MODE_MASK) {
- case S3C2412_IISMOD_MODE_TXONLY:
- case S3C2412_IISMOD_MODE_TXRX:
- /* do nothing, we are in the right mode */
- break;
-
- case S3C2412_IISMOD_MODE_RXONLY:
- mod &= ~S3C2412_IISMOD_MODE_MASK;
- mod |= S3C2412_IISMOD_MODE_TXRX;
- break;
-
- default:
- dev_err(i2s->dev, "TXEN: Invalid MODE in IISMOD\n");
- }
-
- writel(con, regs + S3C2412_IISCON);
- writel(mod, regs + S3C2412_IISMOD);
- } else {
- /* Note, we do not have any indication that the FIFO problems
- * tha the S3C2410/2440 had apply here, so we should be able
- * to disable the DMA and TX without resetting the FIFOS.
- */
-
- con |= S3C2412_IISCON_TXDMA_PAUSE;
- con |= S3C2412_IISCON_TXCH_PAUSE;
- con &= ~S3C2412_IISCON_TXDMA_ACTIVE;
-
- switch (mod & S3C2412_IISMOD_MODE_MASK) {
- case S3C2412_IISMOD_MODE_TXRX:
- mod &= ~S3C2412_IISMOD_MODE_MASK;
- mod |= S3C2412_IISMOD_MODE_RXONLY;
- break;
-
- case S3C2412_IISMOD_MODE_TXONLY:
- mod &= ~S3C2412_IISMOD_MODE_MASK;
- con &= ~S3C2412_IISCON_IIS_ACTIVE;
- break;
-
- default:
- dev_err(i2s->dev, "TXDIS: Invalid MODE in IISMOD\n");
- }
-
- writel(mod, regs + S3C2412_IISMOD);
- writel(con, regs + S3C2412_IISCON);
- }
-
- fic = readl(regs + S3C2412_IISFIC);
- dbg_showcon(__func__, con);
- DBG("%s: IIS: CON=%x MOD=%x FIC=%x\n", __func__, con, mod, fic);
-}
-
-static void s3c2412_snd_rxctrl(int on)
-{
- struct s3c2412_i2s_info *i2s = &s3c2412_i2s;
- void __iomem *regs = i2s->regs;
- u32 fic, con, mod;
-
- DBG("%s(%d)\n", __func__, on);
-
- fic = readl(regs + S3C2412_IISFIC);
- con = readl(regs + S3C2412_IISCON);
- mod = readl(regs + S3C2412_IISMOD);
-
- DBG("%s: IIS: CON=%x MOD=%x FIC=%x\n", __func__, con, mod, fic);
-
- if (on) {
- con |= S3C2412_IISCON_RXDMA_ACTIVE | S3C2412_IISCON_IIS_ACTIVE;
- con &= ~S3C2412_IISCON_RXDMA_PAUSE;
- con &= ~S3C2412_IISCON_RXCH_PAUSE;
-
- switch (mod & S3C2412_IISMOD_MODE_MASK) {
- case S3C2412_IISMOD_MODE_TXRX:
- case S3C2412_IISMOD_MODE_RXONLY:
- /* do nothing, we are in the right mode */
- break;
-
- case S3C2412_IISMOD_MODE_TXONLY:
- mod &= ~S3C2412_IISMOD_MODE_MASK;
- mod |= S3C2412_IISMOD_MODE_TXRX;
- break;
-
- default:
- dev_err(i2s->dev, "RXEN: Invalid MODE in IISMOD\n");
- }
-
- writel(mod, regs + S3C2412_IISMOD);
- writel(con, regs + S3C2412_IISCON);
- } else {
- /* See txctrl notes on FIFOs. */
-
- con &= ~S3C2412_IISCON_RXDMA_ACTIVE;
- con |= S3C2412_IISCON_RXDMA_PAUSE;
- con |= S3C2412_IISCON_RXCH_PAUSE;
-
- switch (mod & S3C2412_IISMOD_MODE_MASK) {
- case S3C2412_IISMOD_MODE_RXONLY:
- con &= ~S3C2412_IISCON_IIS_ACTIVE;
- mod &= ~S3C2412_IISMOD_MODE_MASK;
- break;
-
- case S3C2412_IISMOD_MODE_TXRX:
- mod &= ~S3C2412_IISMOD_MODE_MASK;
- mod |= S3C2412_IISMOD_MODE_TXONLY;
- break;
-
- default:
- dev_err(i2s->dev, "RXEN: Invalid MODE in IISMOD\n");
- }
-
- writel(con, regs + S3C2412_IISCON);
- writel(mod, regs + S3C2412_IISMOD);
- }
-
- fic = readl(regs + S3C2412_IISFIC);
- DBG("%s: IIS: CON=%x MOD=%x FIC=%x\n", __func__, con, mod, fic);
-}
-
-
-/*
- * Wait for the LR signal to allow synchronisation to the L/R clock
- * from the codec. May only be needed for slave mode.
- */
-static int s3c2412_snd_lrsync(void)
-{
- u32 iiscon;
- unsigned long timeout = jiffies + msecs_to_jiffies(5);
-
- DBG("Entered %s\n", __func__);
-
- while (1) {
- iiscon = readl(s3c2412_i2s.regs + S3C2412_IISCON);
- if (iiscon & S3C2412_IISCON_LRINDEX)
- break;
-
- if (timeout < jiffies) {
- printk(KERN_ERR "%s: timeout\n", __func__);
- return -ETIMEDOUT;
- }
- }
-
- return 0;
-}
-
-/*
- * Check whether CPU is the master or slave
- */
-static inline int s3c2412_snd_is_clkmaster(void)
-{
- u32 iismod = readl(s3c2412_i2s.regs + S3C2412_IISMOD);
-
- DBG("Entered %s\n", __func__);
-
- iismod &= S3C2412_IISMOD_MASTER_MASK;
- return !(iismod == S3C2412_IISMOD_SLAVE);
-}
-
-/*
- * Set S3C2412 I2S DAI format
- */
-static int s3c2412_i2s_set_fmt(struct snd_soc_dai *cpu_dai,
- unsigned int fmt)
-{
- u32 iismod;
-
-
- DBG("Entered %s\n", __func__);
-
- iismod = readl(s3c2412_i2s.regs + S3C2412_IISMOD);
- DBG("hw_params r: IISMOD: %x \n", iismod);
-
- switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
- case SND_SOC_DAIFMT_CBM_CFM:
- iismod &= ~S3C2412_IISMOD_MASTER_MASK;
- iismod |= S3C2412_IISMOD_SLAVE;
- break;
- case SND_SOC_DAIFMT_CBS_CFS:
- iismod &= ~S3C2412_IISMOD_MASTER_MASK;
- iismod |= S3C2412_IISMOD_MASTER_INTERNAL;
- break;
- default:
- DBG("unknwon master/slave format\n");
- return -EINVAL;
- }
-
- iismod &= ~S3C2412_IISMOD_SDF_MASK;
-
- switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
- case SND_SOC_DAIFMT_RIGHT_J:
- iismod |= S3C2412_IISMOD_SDF_MSB;
- break;
- case SND_SOC_DAIFMT_LEFT_J:
- iismod |= S3C2412_IISMOD_SDF_LSB;
- break;
- case SND_SOC_DAIFMT_I2S:
- iismod |= S3C2412_IISMOD_SDF_IIS;
- break;
- default:
- DBG("Unknown data format\n");
- return -EINVAL;
- }
-
- writel(iismod, s3c2412_i2s.regs + S3C2412_IISMOD);
- DBG("hw_params w: IISMOD: %x \n", iismod);
- return 0;
-}
-
-static int s3c2412_i2s_hw_params(struct snd_pcm_substream *substream,
- struct snd_pcm_hw_params *params,
- struct snd_soc_dai *dai)
-{
- struct snd_soc_pcm_runtime *rtd = substream->private_data;
- u32 iismod;
-
- DBG("Entered %s\n", __func__);
-
- if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
- rtd->dai->cpu_dai->dma_data = &s3c2412_i2s_pcm_stereo_out;
- else
- rtd->dai->cpu_dai->dma_data = &s3c2412_i2s_pcm_stereo_in;
-
- /* Working copies of register */
- iismod = readl(s3c2412_i2s.regs + S3C2412_IISMOD);
- DBG("%s: r: IISMOD: %x\n", __func__, iismod);
-
- switch (params_format(params)) {
- case SNDRV_PCM_FORMAT_S8:
- iismod |= S3C2412_IISMOD_8BIT;
- break;
- case SNDRV_PCM_FORMAT_S16_LE:
- iismod &= ~S3C2412_IISMOD_8BIT;
- break;
- }
-
- writel(iismod, s3c2412_i2s.regs + S3C2412_IISMOD);
- DBG("%s: w: IISMOD: %x\n", __func__, iismod);
- return 0;
-}
-
-static int s3c2412_i2s_trigger(struct snd_pcm_substream *substream, int cmd,
- struct snd_soc_dai *dai)
-{
- int capture = (substream->stream == SNDRV_PCM_STREAM_CAPTURE);
- unsigned long irqs;
- int ret = 0;
-
- DBG("Entered %s\n", __func__);
-
- switch (cmd) {
- case SNDRV_PCM_TRIGGER_START:
- /* On start, ensure that the FIFOs are cleared and reset. */
-
- writel(capture ? S3C2412_IISFIC_RXFLUSH : S3C2412_IISFIC_TXFLUSH,
- s3c2412_i2s.regs + S3C2412_IISFIC);
-
- /* clear again, just in case */
- writel(0x0, s3c2412_i2s.regs + S3C2412_IISFIC);
-
- case SNDRV_PCM_TRIGGER_RESUME:
- case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
- if (!s3c2412_snd_is_clkmaster()) {
- ret = s3c2412_snd_lrsync();
- if (ret)
- goto exit_err;
- }
-
- local_irq_save(irqs);
-
- if (capture)
- s3c2412_snd_rxctrl(1);
- else
- s3c2412_snd_txctrl(1);
-
- local_irq_restore(irqs);
- break;
-
- case SNDRV_PCM_TRIGGER_STOP:
- case SNDRV_PCM_TRIGGER_SUSPEND:
- case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
- local_irq_save(irqs);
-
- if (capture)
- s3c2412_snd_rxctrl(0);
- else
- s3c2412_snd_txctrl(0);
-
- local_irq_restore(irqs);
- break;
- default:
- ret = -EINVAL;
- break;
- }
-
-exit_err:
- return ret;
-}
-
-/* default table of all avaialable root fs divisors */
-static unsigned int s3c2412_iis_fs[] = { 256, 512, 384, 768, 0 };
-
-int s3c2412_iis_calc_rate(struct s3c2412_rate_calc *info,
- unsigned int *fstab,
- unsigned int rate, struct clk *clk)
-{
- unsigned long clkrate = clk_get_rate(clk);
- unsigned int div;
- unsigned int fsclk;
- unsigned int actual;
- unsigned int fs;
- unsigned int fsdiv;
- signed int deviation = 0;
- unsigned int best_fs = 0;
- unsigned int best_div = 0;
- unsigned int best_rate = 0;
- unsigned int best_deviation = INT_MAX;
-
-
- if (fstab == NULL)
- fstab = s3c2412_iis_fs;
-
- for (fs = 0;; fs++) {
- fsdiv = s3c2412_iis_fs[fs];
-
- if (fsdiv == 0)
- break;
-
- fsclk = clkrate / fsdiv;
- div = fsclk / rate;
-
- if ((fsclk % rate) > (rate / 2))
- div++;
-
- if (div <= 1)
- continue;
-
- actual = clkrate / (fsdiv * div);
- deviation = actual - rate;
-
- printk(KERN_DEBUG "%dfs: div %d => result %d, deviation %d\n",
- fsdiv, div, actual, deviation);
-
- deviation = abs(deviation);
-
- if (deviation < best_deviation) {
- best_fs = fsdiv;
- best_div = div;
- best_rate = actual;
- best_deviation = deviation;
- }
-
- if (deviation == 0)
- break;
- }
-
- printk(KERN_DEBUG "best: fs=%d, div=%d, rate=%d\n",
- best_fs, best_div, best_rate);
-
- info->fs_div = best_fs;
- info->clk_div = best_div;
-
- return 0;
-}
-EXPORT_SYMBOL_GPL(s3c2412_iis_calc_rate);
+static struct s3c_i2sv2_info s3c2412_i2s;
/*
* Set S3C2412 Clock source
switch (clk_id) {
case S3C2412_CLKSRC_PCLK:
+ s3c2412_i2s.master = 1;
iismod &= ~S3C2412_IISMOD_MASTER_MASK;
iismod |= S3C2412_IISMOD_MASTER_INTERNAL;
break;
case S3C2412_CLKSRC_I2SCLK:
+ s3c2412_i2s.master = 0;
iismod &= ~S3C2412_IISMOD_MASTER_MASK;
iismod |= S3C2412_IISMOD_MASTER_EXTERNAL;
break;
return 0;
}
-/*
- * Set S3C2412 Clock dividers
- */
-static int s3c2412_i2s_set_clkdiv(struct snd_soc_dai *cpu_dai,
- int div_id, int div)
-{
- struct s3c2412_i2s_info *i2s = &s3c2412_i2s;
- u32 reg;
-
- DBG("%s(%p, %d, %d)\n", __func__, cpu_dai, div_id, div);
-
- switch (div_id) {
- case S3C2412_DIV_BCLK:
- reg = readl(i2s->regs + S3C2412_IISMOD);
- reg &= ~S3C2412_IISMOD_BCLK_MASK;
- writel(reg | div, i2s->regs + S3C2412_IISMOD);
-
- DBG("%s: MOD=%08x\n", __func__, readl(i2s->regs + S3C2412_IISMOD));
- break;
-
- case S3C2412_DIV_RCLK:
- if (div > 3) {
- /* convert value to bit field */
-
- switch (div) {
- case 256:
- div = S3C2412_IISMOD_RCLK_256FS;
- break;
-
- case 384:
- div = S3C2412_IISMOD_RCLK_384FS;
- break;
-
- case 512:
- div = S3C2412_IISMOD_RCLK_512FS;
- break;
-
- case 768:
- div = S3C2412_IISMOD_RCLK_768FS;
- break;
-
- default:
- return -EINVAL;
- }
- }
-
- reg = readl(s3c2412_i2s.regs + S3C2412_IISMOD);
- reg &= ~S3C2412_IISMOD_RCLK_MASK;
- writel(reg | div, i2s->regs + S3C2412_IISMOD);
- DBG("%s: MOD=%08x\n", __func__, readl(i2s->regs + S3C2412_IISMOD));
- break;
-
- case S3C2412_DIV_PRESCALER:
- if (div >= 0) {
- writel((div << 8) | S3C2412_IISPSR_PSREN,
- i2s->regs + S3C2412_IISPSR);
- } else {
- writel(0x0, i2s->regs + S3C2412_IISPSR);
- }
- DBG("%s: PSR=%08x\n", __func__, readl(i2s->regs + S3C2412_IISPSR));
- break;
-
- default:
- return -EINVAL;
- }
-
- return 0;
-}
struct clk *s3c2412_get_iisclk(void)
{
static int s3c2412_i2s_probe(struct platform_device *pdev,
struct snd_soc_dai *dai)
{
- DBG("Entered %s\n", __func__);
+ int ret;
- s3c2412_i2s.dev = &pdev->dev;
+ DBG("Entered %s\n", __func__);
- s3c2412_i2s.regs = ioremap(S3C2410_PA_IIS, 0x100);
- if (s3c2412_i2s.regs == NULL)
- return -ENXIO;
+ ret = s3c_i2sv2_probe(pdev, dai, &s3c2412_i2s, S3C2410_PA_IIS);
+ if (ret)
+ return ret;
- s3c2412_i2s.iis_pclk = clk_get(&pdev->dev, "iis");
- if (s3c2412_i2s.iis_pclk == NULL) {
- DBG("failed to get iis_clock\n");
- iounmap(s3c2412_i2s.regs);
- return -ENODEV;
- }
+ s3c2412_i2s.dma_capture = &s3c2412_i2s_pcm_stereo_in;
+ s3c2412_i2s.dma_playback = &s3c2412_i2s_pcm_stereo_out;
s3c2412_i2s.iis_cclk = clk_get(&pdev->dev, "i2sclk");
if (s3c2412_i2s.iis_cclk == NULL) {
return -ENODEV;
}
- clk_set_parent(s3c2412_i2s.iis_cclk, clk_get(NULL, "mpll"));
+ /* Set MPLL as the source for IIS CLK */
- clk_enable(s3c2412_i2s.iis_pclk);
+ clk_set_parent(s3c2412_i2s.iis_cclk, clk_get(NULL, "mpll"));
clk_enable(s3c2412_i2s.iis_cclk);
- s3c2412_i2s.iis_clk = s3c2412_i2s.iis_pclk;
+ s3c2412_i2s.iis_cclk = s3c2412_i2s.iis_pclk;
/* Configure the I2S pins in correct mode */
s3c2410_gpio_cfgpin(S3C2410_GPE0, S3C2410_GPE0_I2SLRCK);
s3c2410_gpio_cfgpin(S3C2410_GPE3, S3C2410_GPE3_I2SSDI);
s3c2410_gpio_cfgpin(S3C2410_GPE4, S3C2410_GPE4_I2SSDO);
- s3c2412_snd_txctrl(0);
- s3c2412_snd_rxctrl(0);
-
- return 0;
-}
-
-#ifdef CONFIG_PM
-static int s3c2412_i2s_suspend(struct snd_soc_dai *dai)
-{
- struct s3c2412_i2s_info *i2s = &s3c2412_i2s;
- u32 iismod;
-
- if (dai->active) {
- i2s->suspend_iismod = readl(i2s->regs + S3C2412_IISMOD);
- i2s->suspend_iiscon = readl(i2s->regs + S3C2412_IISCON);
- i2s->suspend_iispsr = readl(i2s->regs + S3C2412_IISPSR);
-
- /* some basic suspend checks */
-
- iismod = readl(i2s->regs + S3C2412_IISMOD);
-
- if (iismod & S3C2412_IISCON_RXDMA_ACTIVE)
- pr_warning("%s: RXDMA active?\n", __func__);
-
- if (iismod & S3C2412_IISCON_TXDMA_ACTIVE)
- pr_warning("%s: TXDMA active?\n", __func__);
-
- if (iismod & S3C2412_IISCON_IIS_ACTIVE)
- pr_warning("%s: IIS active\n", __func__);
- }
-
return 0;
}
-static int s3c2412_i2s_resume(struct snd_soc_dai *dai)
-{
- struct s3c2412_i2s_info *i2s = &s3c2412_i2s;
-
- pr_info("dai_active %d, IISMOD %08x, IISCON %08x\n",
- dai->active, i2s->suspend_iismod, i2s->suspend_iiscon);
-
- if (dai->active) {
- writel(i2s->suspend_iiscon, i2s->regs + S3C2412_IISCON);
- writel(i2s->suspend_iismod, i2s->regs + S3C2412_IISMOD);
- writel(i2s->suspend_iispsr, i2s->regs + S3C2412_IISPSR);
-
- writel(S3C2412_IISFIC_RXFLUSH | S3C2412_IISFIC_TXFLUSH,
- i2s->regs + S3C2412_IISFIC);
-
- ndelay(250);
- writel(0x0, i2s->regs + S3C2412_IISFIC);
-
- }
-
- return 0;
-}
-#else
-#define s3c2412_i2s_suspend NULL
-#define s3c2412_i2s_resume NULL
-#endif /* CONFIG_PM */
-
#define S3C2412_I2S_RATES \
(SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 | SNDRV_PCM_RATE_16000 | \
SNDRV_PCM_RATE_22050 | SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 | \
SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_88200 | SNDRV_PCM_RATE_96000)
struct snd_soc_dai s3c2412_i2s_dai = {
- .name = "s3c2412-i2s",
- .id = 0,
- .probe = s3c2412_i2s_probe,
- .suspend = s3c2412_i2s_suspend,
- .resume = s3c2412_i2s_resume,
+ .name = "s3c2412-i2s",
+ .id = 0,
+ .probe = s3c2412_i2s_probe,
.playback = {
.channels_min = 2,
.channels_max = 2,
.formats = SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_S16_LE,
},
.ops = {
- .trigger = s3c2412_i2s_trigger,
- .hw_params = s3c2412_i2s_hw_params,
- .set_fmt = s3c2412_i2s_set_fmt,
- .set_clkdiv = s3c2412_i2s_set_clkdiv,
.set_sysclk = s3c2412_i2s_set_sysclk,
},
};
static int __init s3c2412_i2s_init(void)
{
- return snd_soc_register_dai(&s3c2412_i2s_dai);
+ return s3c_i2sv2_register_dai(&s3c2412_i2s_dai);
}
module_init(s3c2412_i2s_init);
}
module_exit(s3c2412_i2s_exit);
-
/* Module information */
MODULE_AUTHOR("Ben Dooks, <ben@simtec.co.uk>");
MODULE_DESCRIPTION("S3C2412 I2S SoC Interface");
#ifndef __SND_SOC_S3C24XX_S3C2412_I2S_H
#define __SND_SOC_S3C24XX_S3C2412_I2S_H __FILE__
-#define S3C2412_DIV_BCLK (1)
-#define S3C2412_DIV_RCLK (2)
-#define S3C2412_DIV_PRESCALER (3)
+#include "s3c-i2s-v2.h"
+
+#define S3C2412_DIV_BCLK S3C_I2SV2_DIV_BCLK
+#define S3C2412_DIV_RCLK S3C_I2SV2_DIV_RCLK
+#define S3C2412_DIV_PRESCALER S3C_I2SV2_DIV_PRESCALER
#define S3C2412_CLKSRC_PCLK (0)
#define S3C2412_CLKSRC_I2SCLK (1)
extern struct snd_soc_dai s3c2412_i2s_dai;
-struct s3c2412_rate_calc {
- unsigned int clk_div; /* for prescaler */
- unsigned int fs_div; /* for root frame clock */
-};
-
-extern int s3c2412_iis_calc_rate(struct s3c2412_rate_calc *info,
- unsigned int *fstab,
- unsigned int rate, struct clk *clk);
-
#endif /* __SND_SOC_S3C24XX_S3C2412_I2S_H */
projects / GitHub / exynos8895 / android_kernel_samsung_universal8895.git / commitdiff