summaryrefslogtreecommitdiffstats
path: root/sound/soc/pxa/pxa-ssp.c
diff options
context:
space:
mode:
Diffstat (limited to 'sound/soc/pxa/pxa-ssp.c')
-rw-r--r--sound/soc/pxa/pxa-ssp.c97
1 files changed, 65 insertions, 32 deletions
diff --git a/sound/soc/pxa/pxa-ssp.c b/sound/soc/pxa/pxa-ssp.c
index 3bd7712f029..9e95e5117c8 100644
--- a/sound/soc/pxa/pxa-ssp.c
+++ b/sound/soc/pxa/pxa-ssp.c
@@ -42,11 +42,14 @@
* SSP audio private data
*/
struct ssp_priv {
- struct ssp_dev dev;
+ struct ssp_device *ssp;
unsigned int sysclk;
int dai_fmt;
#ifdef CONFIG_PM
- struct ssp_state state;
+ uint32_t cr0;
+ uint32_t cr1;
+ uint32_t to;
+ uint32_t psp;
#endif
};
@@ -61,6 +64,22 @@ static void dump_registers(struct ssp_device *ssp)
ssp_read_reg(ssp, SSACD));
}
+static void ssp_enable(struct ssp_device *ssp)
+{
+ uint32_t sscr0;
+
+ sscr0 = __raw_readl(ssp->mmio_base + SSCR0) | SSCR0_SSE;
+ __raw_writel(sscr0, ssp->mmio_base + SSCR0);
+}
+
+static void ssp_disable(struct ssp_device *ssp)
+{
+ uint32_t sscr0;
+
+ sscr0 = __raw_readl(ssp->mmio_base + SSCR0) & ~SSCR0_SSE;
+ __raw_writel(sscr0, ssp->mmio_base + SSCR0);
+}
+
struct pxa2xx_pcm_dma_data {
struct pxa2xx_pcm_dma_params params;
char name[20];
@@ -94,13 +113,12 @@ static int pxa_ssp_startup(struct snd_pcm_substream *substream,
struct snd_soc_pcm_runtime *rtd = substream->private_data;
struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
struct ssp_priv *priv = cpu_dai->private_data;
+ struct ssp_device *ssp = priv->ssp;
int ret = 0;
if (!cpu_dai->active) {
- priv->dev.port = cpu_dai->id + 1;
- priv->dev.irq = NO_IRQ;
- clk_enable(priv->dev.ssp->clk);
- ssp_disable(&priv->dev);
+ clk_enable(ssp->clk);
+ ssp_disable(ssp);
}
if (cpu_dai->dma_data) {
@@ -116,10 +134,11 @@ static void pxa_ssp_shutdown(struct snd_pcm_substream *substream,
struct snd_soc_pcm_runtime *rtd = substream->private_data;
struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
struct ssp_priv *priv = cpu_dai->private_data;
+ struct ssp_device *ssp = priv->ssp;
if (!cpu_dai->active) {
- ssp_disable(&priv->dev);
- clk_disable(priv->dev.ssp->clk);
+ ssp_disable(ssp);
+ clk_disable(ssp->clk);
}
if (cpu_dai->dma_data) {
@@ -133,25 +152,39 @@ static void pxa_ssp_shutdown(struct snd_pcm_substream *substream,
static int pxa_ssp_suspend(struct snd_soc_dai *cpu_dai)
{
struct ssp_priv *priv = cpu_dai->private_data;
+ struct ssp_device *ssp = priv->ssp;
if (!cpu_dai->active)
- return 0;
+ clk_enable(ssp->clk);
- ssp_save_state(&priv->dev, &priv->state);
- clk_disable(priv->dev.ssp->clk);
+ priv->cr0 = __raw_readl(ssp->mmio_base + SSCR0);
+ priv->cr1 = __raw_readl(ssp->mmio_base + SSCR1);
+ priv->to = __raw_readl(ssp->mmio_base + SSTO);
+ priv->psp = __raw_readl(ssp->mmio_base + SSPSP);
+
+ ssp_disable(ssp);
+ clk_disable(ssp->clk);
return 0;
}
static int pxa_ssp_resume(struct snd_soc_dai *cpu_dai)
{
struct ssp_priv *priv = cpu_dai->private_data;
+ struct ssp_device *ssp = priv->ssp;
+ uint32_t sssr = SSSR_ROR | SSSR_TUR | SSSR_BCE;
- if (!cpu_dai->active)
- return 0;
+ clk_enable(ssp->clk);
+
+ __raw_writel(sssr, ssp->mmio_base + SSSR);
+ __raw_writel(priv->cr0 & ~SSCR0_SSE, ssp->mmio_base + SSCR0);
+ __raw_writel(priv->cr1, ssp->mmio_base + SSCR1);
+ __raw_writel(priv->to, ssp->mmio_base + SSTO);
+ __raw_writel(priv->psp, ssp->mmio_base + SSPSP);
- clk_enable(priv->dev.ssp->clk);
- ssp_restore_state(&priv->dev, &priv->state);
- ssp_enable(&priv->dev);
+ if (cpu_dai->active)
+ ssp_enable(ssp);
+ else
+ clk_disable(ssp->clk);
return 0;
}
@@ -201,7 +234,7 @@ static int pxa_ssp_set_dai_sysclk(struct snd_soc_dai *cpu_dai,
int clk_id, unsigned int freq, int dir)
{
struct ssp_priv *priv = cpu_dai->private_data;
- struct ssp_device *ssp = priv->dev.ssp;
+ struct ssp_device *ssp = priv->ssp;
int val;
u32 sscr0 = ssp_read_reg(ssp, SSCR0) &
@@ -242,11 +275,11 @@ static int pxa_ssp_set_dai_sysclk(struct snd_soc_dai *cpu_dai,
/* The SSP clock must be disabled when changing SSP clock mode
* on PXA2xx. On PXA3xx it must be enabled when doing so. */
if (!cpu_is_pxa3xx())
- clk_disable(priv->dev.ssp->clk);
+ clk_disable(ssp->clk);
val = ssp_read_reg(ssp, SSCR0) | sscr0;
ssp_write_reg(ssp, SSCR0, val);
if (!cpu_is_pxa3xx())
- clk_enable(priv->dev.ssp->clk);
+ clk_enable(ssp->clk);
return 0;
}
@@ -258,7 +291,7 @@ static int pxa_ssp_set_dai_clkdiv(struct snd_soc_dai *cpu_dai,
int div_id, int div)
{
struct ssp_priv *priv = cpu_dai->private_data;
- struct ssp_device *ssp = priv->dev.ssp;
+ struct ssp_device *ssp = priv->ssp;
int val;
switch (div_id) {
@@ -309,7 +342,7 @@ static int pxa_ssp_set_dai_pll(struct snd_soc_dai *cpu_dai, int pll_id,
int source, unsigned int freq_in, unsigned int freq_out)
{
struct ssp_priv *priv = cpu_dai->private_data;
- struct ssp_device *ssp = priv->dev.ssp;
+ struct ssp_device *ssp = priv->ssp;
u32 ssacd = ssp_read_reg(ssp, SSACD) & ~0x70;
#if defined(CONFIG_PXA3xx)
@@ -378,7 +411,7 @@ static int pxa_ssp_set_dai_tdm_slot(struct snd_soc_dai *cpu_dai,
unsigned int tx_mask, unsigned int rx_mask, int slots, int slot_width)
{
struct ssp_priv *priv = cpu_dai->private_data;
- struct ssp_device *ssp = priv->dev.ssp;
+ struct ssp_device *ssp = priv->ssp;
u32 sscr0;
sscr0 = ssp_read_reg(ssp, SSCR0);
@@ -413,7 +446,7 @@ static int pxa_ssp_set_dai_tristate(struct snd_soc_dai *cpu_dai,
int tristate)
{
struct ssp_priv *priv = cpu_dai->private_data;
- struct ssp_device *ssp = priv->dev.ssp;
+ struct ssp_device *ssp = priv->ssp;
u32 sscr1;
sscr1 = ssp_read_reg(ssp, SSCR1);
@@ -435,7 +468,7 @@ static int pxa_ssp_set_dai_fmt(struct snd_soc_dai *cpu_dai,
unsigned int fmt)
{
struct ssp_priv *priv = cpu_dai->private_data;
- struct ssp_device *ssp = priv->dev.ssp;
+ struct ssp_device *ssp = priv->ssp;
u32 sscr0;
u32 sscr1;
u32 sspsp;
@@ -530,7 +563,7 @@ static int pxa_ssp_hw_params(struct snd_pcm_substream *substream,
struct snd_soc_pcm_runtime *rtd = substream->private_data;
struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
struct ssp_priv *priv = cpu_dai->private_data;
- struct ssp_device *ssp = priv->dev.ssp;
+ struct ssp_device *ssp = priv->ssp;
int chn = params_channels(params);
u32 sscr0;
u32 sspsp;
@@ -640,12 +673,12 @@ static int pxa_ssp_trigger(struct snd_pcm_substream *substream, int cmd,
struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
int ret = 0;
struct ssp_priv *priv = cpu_dai->private_data;
- struct ssp_device *ssp = priv->dev.ssp;
+ struct ssp_device *ssp = priv->ssp;
int val;
switch (cmd) {
case SNDRV_PCM_TRIGGER_RESUME:
- ssp_enable(&priv->dev);
+ ssp_enable(ssp);
break;
case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
val = ssp_read_reg(ssp, SSCR1);
@@ -664,7 +697,7 @@ static int pxa_ssp_trigger(struct snd_pcm_substream *substream, int cmd,
else
val |= SSCR1_RSRE;
ssp_write_reg(ssp, SSCR1, val);
- ssp_enable(&priv->dev);
+ ssp_enable(ssp);
break;
case SNDRV_PCM_TRIGGER_STOP:
val = ssp_read_reg(ssp, SSCR1);
@@ -675,7 +708,7 @@ static int pxa_ssp_trigger(struct snd_pcm_substream *substream, int cmd,
ssp_write_reg(ssp, SSCR1, val);
break;
case SNDRV_PCM_TRIGGER_SUSPEND:
- ssp_disable(&priv->dev);
+ ssp_disable(ssp);
break;
case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
val = ssp_read_reg(ssp, SSCR1);
@@ -705,8 +738,8 @@ static int pxa_ssp_probe(struct platform_device *pdev,
if (!priv)
return -ENOMEM;
- priv->dev.ssp = ssp_request(dai->id + 1, "SoC audio");
- if (priv->dev.ssp == NULL) {
+ priv->ssp = ssp_request(dai->id + 1, "SoC audio");
+ if (priv->ssp == NULL) {
ret = -ENODEV;
goto err_priv;
}
@@ -725,7 +758,7 @@ static void pxa_ssp_remove(struct platform_device *pdev,
struct snd_soc_dai *dai)
{
struct ssp_priv *priv = dai->private_data;
- ssp_free(priv->dev.ssp);
+ ssp_free(priv->ssp);
}
#define PXA_SSP_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 |\
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-11-16 13:24:21 +0000