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-rw-r--r--Documentation/devicetree/bindings/sound/samsung-i2s.txt63
-rw-r--r--sound/soc/samsung/dma.c3
-rw-r--r--sound/soc/samsung/dma.h1
-rw-r--r--sound/soc/samsung/i2s.c209
4 files changed, 230 insertions, 46 deletions
diff --git a/Documentation/devicetree/bindings/sound/samsung-i2s.txt b/Documentation/devicetree/bindings/sound/samsung-i2s.txt
new file mode 100644
index 000000000000..3070046da2e5
--- /dev/null
+++ b/Documentation/devicetree/bindings/sound/samsung-i2s.txt
@@ -0,0 +1,63 @@
+* Samsung I2S controller
+
+Required SoC Specific Properties:
+
+- compatible : "samsung,i2s-v5"
+- reg: physical base address of the controller and length of memory mapped
+ region.
+- dmas: list of DMA controller phandle and DMA request line ordered pairs.
+- dma-names: identifier string for each DMA request line in the dmas property.
+ These strings correspond 1:1 with the ordered pairs in dmas.
+
+Optional SoC Specific Properties:
+
+- samsung,supports-6ch: If the I2S Primary sound source has 5.1 Channel
+ support, this flag is enabled.
+- samsung,supports-rstclr: This flag should be set if I2S software reset bit
+ control is required. When this flag is set I2S software reset bit will be
+ enabled or disabled based on need.
+- samsung,supports-secdai:If I2S block has a secondary FIFO and internal DMA,
+ then this flag is enabled.
+- samsung,idma-addr: Internal DMA register base address of the audio
+ sub system(used in secondary sound source).
+
+Required Board Specific Properties:
+
+- gpios: The gpio specifier for data out,data in, LRCLK, CDCLK and SCLK
+ interface lines. The format of the gpio specifier depends on the gpio
+ controller.
+ The syntax of samsung gpio specifier is
+ <[phandle of the gpio controller node]
+ [pin number within the gpio controller]
+ [mux function]
+ [flags and pull up/down]
+ [drive strength]>
+
+Example:
+
+- SoC Specific Portion:
+
+i2s@03830000 {
+ compatible = "samsung,i2s-v5";
+ reg = <0x03830000 0x100>;
+ dmas = <&pdma0 10
+ &pdma0 9
+ &pdma0 8>;
+ dma-names = "tx", "rx", "tx-sec";
+ samsung,supports-6ch;
+ samsung,supports-rstclr;
+ samsung,supports-secdai;
+ samsung,idma-addr = <0x03000000>;
+};
+
+- Board Specific Portion:
+
+i2s@03830000 {
+ gpios = <&gpz 0 2 0 0>, /* I2S_0_SCLK */
+ <&gpz 1 2 0 0>, /* I2S_0_CDCLK */
+ <&gpz 2 2 0 0>, /* I2S_0_LRCK */
+ <&gpz 3 2 0 0>, /* I2S_0_SDI */
+ <&gpz 4 2 0 0>, /* I2S_0_SDO[1] */
+ <&gpz 5 2 0 0>, /* I2S_0_SDO[2] */
+ <&gpz 6 2 0 0>; /* I2S_0_SDO[3] */
+};
diff --git a/sound/soc/samsung/dma.c b/sound/soc/samsung/dma.c
index db87628d7630..21b79262010e 100644
--- a/sound/soc/samsung/dma.c
+++ b/sound/soc/samsung/dma.c
@@ -174,7 +174,8 @@ static int dma_hw_params(struct snd_pcm_substream *substream,
config.width = prtd->params->dma_size;
config.fifo = prtd->params->dma_addr;
prtd->params->ch = prtd->params->ops->request(
- prtd->params->channel, &req);
+ prtd->params->channel, &req, rtd->cpu_dai->dev,
+ prtd->params->ch_name);
prtd->params->ops->config(prtd->params->ch, &config);
}
diff --git a/sound/soc/samsung/dma.h b/sound/soc/samsung/dma.h
index 73d8c7c8a1e8..189a7a6d5020 100644
--- a/sound/soc/samsung/dma.h
+++ b/sound/soc/samsung/dma.h
@@ -19,6 +19,7 @@ struct s3c_dma_params {
int dma_size; /* Size of the DMA transfer */
unsigned ch;
struct samsung_dma_ops *ops;
+ char *ch_name;
};
int asoc_dma_platform_register(struct device *dev);
diff --git a/sound/soc/samsung/i2s.c b/sound/soc/samsung/i2s.c
index 808df74c3248..2fc42f9bf962 100644
--- a/sound/soc/samsung/i2s.c
+++ b/sound/soc/samsung/i2s.c
@@ -15,11 +15,15 @@
#include <linux/clk.h>
#include <linux/io.h>
#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/of_gpio.h>
#include <linux/pm_runtime.h>
#include <sound/soc.h>
#include <sound/pcm_params.h>
+#include <mach/dma.h>
+
#include <linux/platform_data/asoc-s3c.h>
#include "dma.h"
@@ -34,6 +38,10 @@ enum samsung_dai_type {
TYPE_SEC,
};
+struct samsung_i2s_dai_data {
+ int dai_type;
+};
+
struct i2s_dai {
/* Platform device for this DAI */
struct platform_device *pdev;
@@ -71,6 +79,7 @@ struct i2s_dai {
u32 suspend_i2smod;
u32 suspend_i2scon;
u32 suspend_i2spsr;
+ unsigned long gpios[7]; /* i2s gpio line numbers */
};
/* Lock for cross i/f checks */
@@ -1000,19 +1009,76 @@ static struct i2s_dai *i2s_alloc_dai(struct platform_device *pdev, bool sec)
return i2s;
}
+#ifdef CONFIG_OF
+static int samsung_i2s_parse_dt_gpio(struct i2s_dai *i2s)
+{
+ struct device *dev = &i2s->pdev->dev;
+ int index, gpio, ret;
+
+ for (index = 0; index < 7; index++) {
+ gpio = of_get_gpio(dev->of_node, index);
+ if (!gpio_is_valid(gpio)) {
+ dev_err(dev, "invalid gpio[%d]: %d\n", index, gpio);
+ goto free_gpio;
+ }
+
+ ret = gpio_request(gpio, dev_name(dev));
+ if (ret) {
+ dev_err(dev, "gpio [%d] request failed\n", gpio);
+ goto free_gpio;
+ }
+ i2s->gpios[index] = gpio;
+ }
+ return 0;
+
+free_gpio:
+ while (--index >= 0)
+ gpio_free(i2s->gpios[index]);
+ return -EINVAL;
+}
+
+static void samsung_i2s_dt_gpio_free(struct i2s_dai *i2s)
+{
+ unsigned int index;
+ for (index = 0; index < 7; index++)
+ gpio_free(i2s->gpios[index]);
+}
+#else
+static int samsung_i2s_parse_dt_gpio(struct i2s_dai *dai)
+{
+ return -EINVAL;
+}
+
+static void samsung_i2s_dt_gpio_free(struct i2s_dai *dai)
+{
+}
+
+#endif
+
+static const struct of_device_id exynos_i2s_match[];
+
static inline int samsung_i2s_get_driver_data(struct platform_device *pdev)
{
- return platform_get_device_id(pdev)->driver_data;
+#ifdef CONFIG_OF
+ struct samsung_i2s_dai_data *data;
+ if (pdev->dev.of_node) {
+ const struct of_device_id *match;
+ match = of_match_node(exynos_i2s_match, pdev->dev.of_node);
+ data = (struct samsung_i2s_dai_data *) match->data;
+ return data->dai_type;
+ } else
+#endif
+ return platform_get_device_id(pdev)->driver_data;
}
static int samsung_i2s_probe(struct platform_device *pdev)
{
- u32 dma_pl_chan, dma_cp_chan, dma_pl_sec_chan;
struct i2s_dai *pri_dai, *sec_dai = NULL;
- struct s3c_audio_pdata *i2s_pdata;
- struct samsung_i2s *i2s_cfg;
+ struct s3c_audio_pdata *i2s_pdata = pdev->dev.platform_data;
+ struct samsung_i2s *i2s_cfg = NULL;
struct resource *res;
- u32 regs_base, quirks;
+ u32 regs_base, quirks = 0, idma_addr = 0;
+ struct device_node *np = pdev->dev.of_node;
enum samsung_dai_type samsung_dai_type;
int ret = 0;
@@ -1027,31 +1093,60 @@ static int samsung_i2s_probe(struct platform_device *pdev)
return 0;
}
- i2s_pdata = pdev->dev.platform_data;
- if (i2s_pdata == NULL) {
- dev_err(&pdev->dev, "Can't work without s3c_audio_pdata\n");
- return -EINVAL;
+ pri_dai = i2s_alloc_dai(pdev, false);
+ if (!pri_dai) {
+ dev_err(&pdev->dev, "Unable to alloc I2S_pri\n");
+ return -ENOMEM;
}
- res = platform_get_resource(pdev, IORESOURCE_DMA, 0);
- if (!res) {
- dev_err(&pdev->dev, "Unable to get I2S-TX dma resource\n");
- return -ENXIO;
- }
- dma_pl_chan = res->start;
+ if (!np) {
+ res = platform_get_resource(pdev, IORESOURCE_DMA, 0);
+ if (!res) {
+ dev_err(&pdev->dev,
+ "Unable to get I2S-TX dma resource\n");
+ return -ENXIO;
+ }
+ pri_dai->dma_playback.channel = res->start;
- res = platform_get_resource(pdev, IORESOURCE_DMA, 1);
- if (!res) {
- dev_err(&pdev->dev, "Unable to get I2S-RX dma resource\n");
- return -ENXIO;
- }
- dma_cp_chan = res->start;
+ res = platform_get_resource(pdev, IORESOURCE_DMA, 1);
+ if (!res) {
+ dev_err(&pdev->dev,
+ "Unable to get I2S-RX dma resource\n");
+ return -ENXIO;
+ }
+ pri_dai->dma_capture.channel = res->start;
- res = platform_get_resource(pdev, IORESOURCE_DMA, 2);
- if (res)
- dma_pl_sec_chan = res->start;
- else
- dma_pl_sec_chan = 0;
+ if (i2s_pdata == NULL) {
+ dev_err(&pdev->dev, "Can't work without s3c_audio_pdata\n");
+ return -EINVAL;
+ }
+
+ if (&i2s_pdata->type)
+ i2s_cfg = &i2s_pdata->type.i2s;
+
+ if (i2s_cfg) {
+ quirks = i2s_cfg->quirks;
+ idma_addr = i2s_cfg->idma_addr;
+ }
+ } else {
+ if (of_find_property(np, "samsung,supports-6ch", NULL))
+ quirks |= QUIRK_PRI_6CHAN;
+
+ if (of_find_property(np, "samsung,supports-secdai", NULL))
+ quirks |= QUIRK_SEC_DAI;
+
+ if (of_find_property(np, "samsung,supports-rstclr", NULL))
+ quirks |= QUIRK_NEED_RSTCLR;
+
+ if (of_property_read_u32(np, "samsung,idma-addr",
+ &idma_addr)) {
+ if (quirks & QUIRK_SEC_DAI) {
+ dev_err(&pdev->dev, "idma address is not"\
+ "specified");
+ return -EINVAL;
+ }
+ }
+ }
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
if (!res) {
@@ -1066,24 +1161,14 @@ static int samsung_i2s_probe(struct platform_device *pdev)
}
regs_base = res->start;
- i2s_cfg = &i2s_pdata->type.i2s;
- quirks = i2s_cfg->quirks;
-
- pri_dai = i2s_alloc_dai(pdev, false);
- if (!pri_dai) {
- dev_err(&pdev->dev, "Unable to alloc I2S_pri\n");
- ret = -ENOMEM;
- goto err;
- }
-
pri_dai->dma_playback.dma_addr = regs_base + I2STXD;
pri_dai->dma_capture.dma_addr = regs_base + I2SRXD;
pri_dai->dma_playback.client =
(struct s3c2410_dma_client *)&pri_dai->dma_playback;
+ pri_dai->dma_playback.ch_name = "tx";
pri_dai->dma_capture.client =
(struct s3c2410_dma_client *)&pri_dai->dma_capture;
- pri_dai->dma_playback.channel = dma_pl_chan;
- pri_dai->dma_capture.channel = dma_cp_chan;
+ pri_dai->dma_capture.ch_name = "rx";
pri_dai->dma_playback.dma_size = 4;
pri_dai->dma_capture.dma_size = 4;
pri_dai->base = regs_base;
@@ -1102,20 +1187,34 @@ static int samsung_i2s_probe(struct platform_device *pdev)
sec_dai->dma_playback.dma_addr = regs_base + I2STXDS;
sec_dai->dma_playback.client =
(struct s3c2410_dma_client *)&sec_dai->dma_playback;
- /* Use iDMA always if SysDMA not provided */
- sec_dai->dma_playback.channel = dma_pl_sec_chan ? : -1;
+ sec_dai->dma_playback.ch_name = "tx-sec";
+
+ if (!np) {
+ res = platform_get_resource(pdev, IORESOURCE_DMA, 2);
+ if (res)
+ sec_dai->dma_playback.channel = res->start;
+ }
+
sec_dai->dma_playback.dma_size = 4;
sec_dai->base = regs_base;
sec_dai->quirks = quirks;
- sec_dai->idma_playback.dma_addr = i2s_cfg->idma_addr;
+ sec_dai->idma_playback.dma_addr = idma_addr;
sec_dai->pri_dai = pri_dai;
pri_dai->sec_dai = sec_dai;
}
- if (i2s_pdata->cfg_gpio && i2s_pdata->cfg_gpio(pdev)) {
- dev_err(&pdev->dev, "Unable to configure gpio\n");
- ret = -EINVAL;
- goto err;
+ if (np) {
+ if (samsung_i2s_parse_dt_gpio(pri_dai)) {
+ dev_err(&pdev->dev, "Unable to configure gpio\n");
+ ret = -EINVAL;
+ goto err;
+ }
+ } else {
+ if (i2s_pdata->cfg_gpio && i2s_pdata->cfg_gpio(pdev)) {
+ dev_err(&pdev->dev, "Unable to configure gpio\n");
+ ret = -EINVAL;
+ goto err;
+ }
}
snd_soc_register_dai(&pri_dai->pdev->dev, &pri_dai->i2s_dai_drv);
@@ -1135,10 +1234,14 @@ static int samsung_i2s_remove(struct platform_device *pdev)
{
struct i2s_dai *i2s, *other;
struct resource *res;
+ struct s3c_audio_pdata *i2s_pdata = pdev->dev.platform_data;
i2s = dev_get_drvdata(&pdev->dev);
other = i2s->pri_dai ? : i2s->sec_dai;
+ if (!i2s_pdata->cfg_gpio && pdev->dev.of_node)
+ samsung_i2s_dt_gpio_free(i2s->pri_dai);
+
if (other) {
other->pri_dai = NULL;
other->sec_dai = NULL;
@@ -1170,6 +1273,21 @@ static struct platform_device_id samsung_i2s_driver_ids[] = {
};
MODULE_DEVICE_TABLE(platform, samsung-i2s-driver-ids);
+#ifdef CONFIG_OF
+static struct samsung_i2s_dai_data samsung_i2s_dai_data_array[] = {
+ [TYPE_PRI] = { TYPE_PRI },
+ [TYPE_SEC] = { TYPE_SEC },
+};
+
+static const struct of_device_id exynos_i2s_match[] = {
+ { .compatible = "samsung,i2s-v5",
+ .data = &samsung_i2s_dai_data_array[TYPE_PRI],
+ },
+ {},
+};
+MODULE_DEVICE_TABLE(of, exynos_i2s_match);
+#endif
+
static struct platform_driver samsung_i2s_driver = {
.probe = samsung_i2s_probe,
.remove = samsung_i2s_remove,
@@ -1177,6 +1295,7 @@ static struct platform_driver samsung_i2s_driver = {
.driver = {
.name = "samsung-i2s",
.owner = THIS_MODULE,
+ .of_match_table = of_match_ptr(exynos_i2s_match),
},
};
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-17 05:44:35 +0100