Commit 170abcaa authored by Sugar Zhang's avatar Sugar Zhang Committed by Mark Brown

ASoC: rockchip: i2s: configure the sdio pins' iomux mode

There are 3 i2s sdio pins, which iomux mode is as follows:

 - sdi3_sdo1
 - sdi2_sdo2
 - sdi1_sdo3

we need to configure these pins' iomux mode via the GRF register
when use multi channel playback/capture.
Signed-off-by: default avatarSugar Zhang <sugar.zhang@rock-chips.com>
Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent 1a695a90
...@@ -23,6 +23,11 @@ Required properties: ...@@ -23,6 +23,11 @@ Required properties:
- rockchip,playback-channels: max playback channels, if not set, 8 channels default. - rockchip,playback-channels: max playback channels, if not set, 8 channels default.
- rockchip,capture-channels: max capture channels, if not set, 2 channels default. - rockchip,capture-channels: max capture channels, if not set, 2 channels default.
Required properties for controller which support multi channels
playback/capture:
- rockchip,grf: the phandle of the syscon node for GRF register.
Example for rk3288 I2S controller: Example for rk3288 I2S controller:
i2s@ff890000 { i2s@ff890000 {
......
...@@ -11,8 +11,10 @@ ...@@ -11,8 +11,10 @@
*/ */
#include <linux/module.h> #include <linux/module.h>
#include <linux/mfd/syscon.h>
#include <linux/delay.h> #include <linux/delay.h>
#include <linux/of_gpio.h> #include <linux/of_gpio.h>
#include <linux/of_device.h>
#include <linux/clk.h> #include <linux/clk.h>
#include <linux/pm_runtime.h> #include <linux/pm_runtime.h>
#include <linux/regmap.h> #include <linux/regmap.h>
...@@ -23,6 +25,11 @@ ...@@ -23,6 +25,11 @@
#define DRV_NAME "rockchip-i2s" #define DRV_NAME "rockchip-i2s"
struct rk_i2s_pins {
u32 reg_offset;
u32 shift;
};
struct rk_i2s_dev { struct rk_i2s_dev {
struct device *dev; struct device *dev;
...@@ -33,6 +40,7 @@ struct rk_i2s_dev { ...@@ -33,6 +40,7 @@ struct rk_i2s_dev {
struct snd_dmaengine_dai_dma_data playback_dma_data; struct snd_dmaengine_dai_dma_data playback_dma_data;
struct regmap *regmap; struct regmap *regmap;
struct regmap *grf;
/* /*
* Used to indicate the tx/rx status. * Used to indicate the tx/rx status.
...@@ -42,6 +50,7 @@ struct rk_i2s_dev { ...@@ -42,6 +50,7 @@ struct rk_i2s_dev {
bool tx_start; bool tx_start;
bool rx_start; bool rx_start;
bool is_master_mode; bool is_master_mode;
const struct rk_i2s_pins *pins;
}; };
static int i2s_runtime_suspend(struct device *dev) static int i2s_runtime_suspend(struct device *dev)
...@@ -300,6 +309,30 @@ static int rockchip_i2s_hw_params(struct snd_pcm_substream *substream, ...@@ -300,6 +309,30 @@ static int rockchip_i2s_hw_params(struct snd_pcm_substream *substream,
I2S_TXCR_VDW_MASK | I2S_TXCR_CSR_MASK, I2S_TXCR_VDW_MASK | I2S_TXCR_CSR_MASK,
val); val);
if (!IS_ERR(i2s->grf) && i2s->pins) {
regmap_read(i2s->regmap, I2S_TXCR, &val);
val &= I2S_TXCR_CSR_MASK;
switch (val) {
case I2S_CHN_4:
val = I2S_IO_4CH_OUT_6CH_IN;
break;
case I2S_CHN_6:
val = I2S_IO_6CH_OUT_4CH_IN;
break;
case I2S_CHN_8:
val = I2S_IO_8CH_OUT_2CH_IN;
break;
default:
val = I2S_IO_2CH_OUT_8CH_IN;
break;
}
val <<= i2s->pins->shift;
val |= (I2S_IO_DIRECTION_MASK << i2s->pins->shift) << 16;
regmap_write(i2s->grf, i2s->pins->reg_offset, val);
}
regmap_update_bits(i2s->regmap, I2S_DMACR, I2S_DMACR_TDL_MASK, regmap_update_bits(i2s->regmap, I2S_DMACR, I2S_DMACR_TDL_MASK,
I2S_DMACR_TDL(16)); I2S_DMACR_TDL(16));
regmap_update_bits(i2s->regmap, I2S_DMACR, I2S_DMACR_RDL_MASK, regmap_update_bits(i2s->regmap, I2S_DMACR, I2S_DMACR_RDL_MASK,
...@@ -485,9 +518,23 @@ static const struct regmap_config rockchip_i2s_regmap_config = { ...@@ -485,9 +518,23 @@ static const struct regmap_config rockchip_i2s_regmap_config = {
.cache_type = REGCACHE_FLAT, .cache_type = REGCACHE_FLAT,
}; };
static const struct rk_i2s_pins rk3399_i2s_pins = {
.reg_offset = 0xe220,
.shift = 11,
};
static const struct of_device_id rockchip_i2s_match[] = {
{ .compatible = "rockchip,rk3066-i2s", },
{ .compatible = "rockchip,rk3188-i2s", },
{ .compatible = "rockchip,rk3288-i2s", },
{ .compatible = "rockchip,rk3399-i2s", .data = &rk3399_i2s_pins },
{},
};
static int rockchip_i2s_probe(struct platform_device *pdev) static int rockchip_i2s_probe(struct platform_device *pdev)
{ {
struct device_node *node = pdev->dev.of_node; struct device_node *node = pdev->dev.of_node;
const struct of_device_id *of_id;
struct rk_i2s_dev *i2s; struct rk_i2s_dev *i2s;
struct snd_soc_dai_driver *soc_dai; struct snd_soc_dai_driver *soc_dai;
struct resource *res; struct resource *res;
...@@ -501,6 +548,17 @@ static int rockchip_i2s_probe(struct platform_device *pdev) ...@@ -501,6 +548,17 @@ static int rockchip_i2s_probe(struct platform_device *pdev)
return -ENOMEM; return -ENOMEM;
} }
i2s->dev = &pdev->dev;
i2s->grf = syscon_regmap_lookup_by_phandle(node, "rockchip,grf");
if (!IS_ERR(i2s->grf)) {
of_id = of_match_device(rockchip_i2s_match, &pdev->dev);
if (!of_id || !of_id->data)
return -EINVAL;
i2s->pins = of_id->data;
}
/* try to prepare related clocks */ /* try to prepare related clocks */
i2s->hclk = devm_clk_get(&pdev->dev, "i2s_hclk"); i2s->hclk = devm_clk_get(&pdev->dev, "i2s_hclk");
if (IS_ERR(i2s->hclk)) { if (IS_ERR(i2s->hclk)) {
...@@ -540,7 +598,6 @@ static int rockchip_i2s_probe(struct platform_device *pdev) ...@@ -540,7 +598,6 @@ static int rockchip_i2s_probe(struct platform_device *pdev)
i2s->capture_dma_data.addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES; i2s->capture_dma_data.addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES;
i2s->capture_dma_data.maxburst = 4; i2s->capture_dma_data.maxburst = 4;
i2s->dev = &pdev->dev;
dev_set_drvdata(&pdev->dev, i2s); dev_set_drvdata(&pdev->dev, i2s);
pm_runtime_enable(&pdev->dev); pm_runtime_enable(&pdev->dev);
...@@ -606,14 +663,6 @@ static int rockchip_i2s_remove(struct platform_device *pdev) ...@@ -606,14 +663,6 @@ static int rockchip_i2s_remove(struct platform_device *pdev)
return 0; return 0;
} }
static const struct of_device_id rockchip_i2s_match[] = {
{ .compatible = "rockchip,rk3066-i2s", },
{ .compatible = "rockchip,rk3188-i2s", },
{ .compatible = "rockchip,rk3288-i2s", },
{ .compatible = "rockchip,rk3399-i2s", },
{},
};
static const struct dev_pm_ops rockchip_i2s_pm_ops = { static const struct dev_pm_ops rockchip_i2s_pm_ops = {
SET_RUNTIME_PM_OPS(i2s_runtime_suspend, i2s_runtime_resume, SET_RUNTIME_PM_OPS(i2s_runtime_suspend, i2s_runtime_resume,
NULL) NULL)
......
...@@ -236,4 +236,11 @@ enum { ...@@ -236,4 +236,11 @@ enum {
#define I2S_TXDR (0x0024) #define I2S_TXDR (0x0024)
#define I2S_RXDR (0x0028) #define I2S_RXDR (0x0028)
/* io direction cfg register */
#define I2S_IO_DIRECTION_MASK (7)
#define I2S_IO_8CH_OUT_2CH_IN (0)
#define I2S_IO_6CH_OUT_4CH_IN (4)
#define I2S_IO_4CH_OUT_6CH_IN (6)
#define I2S_IO_2CH_OUT_8CH_IN (7)
#endif /* _ROCKCHIP_IIS_H */ #endif /* _ROCKCHIP_IIS_H */
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