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Add support for enabling/disabling the aic controllers clock. 

SVN-Revision: 20043
This commit is contained in:
Lars-Peter Clausen 2010-03-07 23:44:58 +00:00
parent 33f8fa04df
commit 2be4423361
2 changed files with 50 additions and 27 deletions
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12
target/linux/xburst/files-2.6.32/arch/mips/jz4740/clock.c
View File

@ -55,8 +55,8 @@
#define JZ_CLOCK_GATE_RTC BIT(2)
#define JZ_CLOCK_GATE_I2C BIT(3)
#define JZ_CLOCK_GATE_SPI BIT(4)
#define JZ_CLOCK_GATE_AIC_PCLK BIT(5)
#define JZ_CLOCK_GATE_AIC BIT(6)
#define JZ_CLOCK_GATE_AIC BIT(5)
#define JZ_CLOCK_GATE_I2S BIT(6)
#define JZ_CLOCK_GATE_MMC BIT(7)
#define JZ_CLOCK_GATE_ADC BIT(8)
#define JZ_CLOCK_GATE_CIM BIT(9)
@ -626,7 +626,7 @@ static struct divided_clk jz4740_clock_divided_clks[] = {
.clk = {
.name = "i2s",
.parent = &jz_clk_ext.clk,
.gate_bit = JZ_CLOCK_GATE_AIC,
.gate_bit = JZ_CLOCK_GATE_I2S,
.ops = &jz_clk_i2s_ops,
},
.reg = JZ_REG_CLOCK_I2S,
@ -721,6 +721,12 @@ static struct clk jz4740_clock_simple_clks[] = {
.gate_bit = JZ_CLOCK_GATE_I2C,
.ops = &jz_clk_simple_ops,
},
{
.name = "aic",
.parent = &jz_clk_ext.clk,
.gate_bit = JZ_CLOCK_GATE_AIC,
.ops = &jz_clk_simple_ops,
},
};
static struct static_clk jz_clk_rtc = {

65
target/linux/xburst/files-2.6.32/sound/soc/jz4740/jz4740-i2s.c
View File

@ -84,7 +84,8 @@ struct jz4740_i2s {
void __iomem *base;
dma_addr_t phys_base;
struct clk *clk;
struct clk *clk_aic;
struct clk *clk_i2s;
struct jz4740_pcm_config pcm_config;
};
@ -141,7 +142,7 @@ static int jz4740_i2s_startup(struct snd_pcm_substream *substream, struct
jz4740_i2s_write(i2s, JZ_REG_AIC_CTRL, ctrl);
clk_enable(i2s->clk);
clk_enable(i2s->clk_i2s);
jz4740_i2s_write(i2s, JZ_REG_AIC_CONF, conf);
return 0;
@ -153,14 +154,14 @@ static void jz4740_i2s_shutdown(struct snd_pcm_substream *substream, struct
struct jz4740_i2s *i2s = jz4740_dai_to_i2s(dai);
uint32_t conf;
if (dai->active)
if (!dai->active)
return;
conf = jz4740_i2s_read(i2s, JZ_REG_AIC_CONF);
conf &= ~JZ_AIC_CONF_ENABLE;
jz4740_i2s_write(i2s, JZ_REG_AIC_CONF, conf);
clk_disable(i2s->clk);
clk_disable(i2s->clk_i2s);
}
@ -198,7 +199,7 @@ static int jz4740_i2s_trigger(struct snd_pcm_substream *substream, int cmd,
return -EINVAL;
}
jz4740_i2s_write(i2s, JZ_REG_AIC_CTRL,ctrl);
jz4740_i2s_write(i2s, JZ_REG_AIC_CTRL, ctrl);
return 0;
}
@ -348,12 +349,12 @@ static int jz4740_i2s_set_sysclk(struct snd_soc_dai *dai, int clk_id,
switch (clk_id) {
case JZ4740_I2S_CLKSRC_EXT:
parent = clk_get(NULL, "ext");
clk_set_parent(i2s->clk, parent);
clk_set_parent(i2s->clk_i2s, parent);
break;
case JZ4740_I2S_CLKSRC_PLL:
parent = clk_get(NULL, "pll half");
clk_set_parent(i2s->clk, parent);
ret = clk_set_rate(i2s->clk, freq);
clk_set_parent(i2s->clk_i2s, parent);
ret = clk_set_rate(i2s->clk_i2s, freq);
break;
default:
return -EINVAL;
@ -368,14 +369,16 @@ static int jz4740_i2s_suspend(struct snd_soc_dai *dai)
struct jz4740_i2s *i2s = jz4740_dai_to_i2s(dai);
uint32_t conf;
if (!dai->active)
return 0;
if (dai->active) {
conf = jz4740_i2s_read(i2s, JZ_REG_AIC_CONF);
conf &= ~JZ_AIC_CONF_ENABLE;
jz4740_i2s_write(i2s, JZ_REG_AIC_CONF, conf);
conf = jz4740_i2s_read(i2s, JZ_REG_AIC_CONF);
conf &= ~JZ_AIC_CONF_ENABLE;
jz4740_i2s_write(i2s, JZ_REG_AIC_CONF, conf);
clk_disable(i2s->clk_i2s);
}
clk_disable(i2s->clk_aic);
clk_disable(i2s->clk);
return 0;
}
@ -384,14 +387,16 @@ static int jz4740_i2s_resume(struct snd_soc_dai *dai)
struct jz4740_i2s *i2s = jz4740_dai_to_i2s(dai);
uint32_t conf;
if (!dai->active)
return 0;
clk_enable(i2s->clk_aic);
clk_enable(i2s->clk);
if (dai->active) {
clk_enable(i2s->clk_i2s);
conf = jz4740_i2s_read(i2s, JZ_REG_AIC_CONF);
conf |= JZ_AIC_CONF_ENABLE;
jz4740_i2s_write(i2s, JZ_REG_AIC_CONF, conf);
conf = jz4740_i2s_read(i2s, JZ_REG_AIC_CONF);
conf |= JZ_AIC_CONF_ENABLE;
jz4740_i2s_write(i2s, JZ_REG_AIC_CONF, conf);
}
return 0;
}
@ -487,13 +492,23 @@ static int __devinit jz4740_i2s_dev_probe(struct platform_device *pdev)
ret = snd_soc_register_dai(&jz4740_i2s_dai);
i2s->clk = clk_get(&pdev->dev, "i2s");
i2s->clk_aic = clk_get(&pdev->dev, "aic");
if (IS_ERR(i2s->clk)) {
ret = PTR_ERR(i2s->clk);
if (IS_ERR(i2s->clk_aic)) {
ret = PTR_ERR(i2s->clk_aic);
goto err_iounmap;
}
i2s->clk_i2s = clk_get(&pdev->dev, "i2s");
if (IS_ERR(i2s->clk_i2s)) {
ret = PTR_ERR(i2s->clk_i2s);
goto err_iounmap;
}
clk_enable(i2s->clk_aic);
platform_set_drvdata(pdev, i2s);
return 0;
@ -514,7 +529,9 @@ static int __devexit jz4740_i2s_dev_remove(struct platform_device *pdev)
snd_soc_unregister_dai(&jz4740_i2s_dai);
clk_put(i2s->clk);
clk_disable(i2s->clk_aic);
clk_put(i2s->clk_i2s);
clk_put(i2s->clk_aic);
iounmap(i2s->base);
release_mem_region(i2s->mem->start, resource_size(i2s->mem));