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Diffstat (limited to 'sound/soc/tegra/tegra_i2s.c')
-rw-r--r--sound/soc/tegra/tegra_i2s.c164
1 files changed, 56 insertions, 108 deletions
diff --git a/sound/soc/tegra/tegra_i2s.c b/sound/soc/tegra/tegra_i2s.c
index 6728fab8c411..33509de52540 100644
--- a/sound/soc/tegra/tegra_i2s.c
+++ b/sound/soc/tegra/tegra_i2s.c
@@ -36,13 +36,13 @@
#include <linux/seq_file.h>
#include <linux/slab.h>
#include <linux/io.h>
+#include <linux/of.h>
#include <mach/iomap.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
#include <sound/soc.h>
-#include "tegra_das.h"
#include "tegra_i2s.h"
#define DRV_NAME "tegra-i2s"
@@ -99,13 +99,11 @@ static const struct file_operations tegra_i2s_debug_fops = {
.release = single_release,
};
-static void tegra_i2s_debug_add(struct tegra_i2s *i2s, int id)
+static void tegra_i2s_debug_add(struct tegra_i2s *i2s)
{
- char name[] = DRV_NAME ".0";
-
- snprintf(name, sizeof(name), DRV_NAME".%1d", id);
- i2s->debug = debugfs_create_file(name, S_IRUGO, snd_soc_debugfs_root,
- i2s, &tegra_i2s_debug_fops);
+ i2s->debug = debugfs_create_file(i2s->dai.name, S_IRUGO,
+ snd_soc_debugfs_root, i2s,
+ &tegra_i2s_debug_fops);
}
static void tegra_i2s_debug_remove(struct tegra_i2s *i2s)
@@ -306,93 +304,54 @@ static int tegra_i2s_probe(struct snd_soc_dai *dai)
return 0;
}
-static struct snd_soc_dai_ops tegra_i2s_dai_ops = {
+static const struct snd_soc_dai_ops tegra_i2s_dai_ops = {
.set_fmt = tegra_i2s_set_fmt,
.hw_params = tegra_i2s_hw_params,
.trigger = tegra_i2s_trigger,
};
-static struct snd_soc_dai_driver tegra_i2s_dai[] = {
- {
- .name = DRV_NAME ".0",
- .probe = tegra_i2s_probe,
- .playback = {
- .channels_min = 2,
- .channels_max = 2,
- .rates = SNDRV_PCM_RATE_8000_96000,
- .formats = SNDRV_PCM_FMTBIT_S16_LE,
- },
- .capture = {
- .channels_min = 2,
- .channels_max = 2,
- .rates = SNDRV_PCM_RATE_8000_96000,
- .formats = SNDRV_PCM_FMTBIT_S16_LE,
- },
- .ops = &tegra_i2s_dai_ops,
- .symmetric_rates = 1,
+static const struct snd_soc_dai_driver tegra_i2s_dai_template = {
+ .probe = tegra_i2s_probe,
+ .playback = {
+ .channels_min = 2,
+ .channels_max = 2,
+ .rates = SNDRV_PCM_RATE_8000_96000,
+ .formats = SNDRV_PCM_FMTBIT_S16_LE,
},
- {
- .name = DRV_NAME ".1",
- .probe = tegra_i2s_probe,
- .playback = {
- .channels_min = 2,
- .channels_max = 2,
- .rates = SNDRV_PCM_RATE_8000_96000,
- .formats = SNDRV_PCM_FMTBIT_S16_LE,
- },
- .capture = {
- .channels_min = 2,
- .channels_max = 2,
- .rates = SNDRV_PCM_RATE_8000_96000,
- .formats = SNDRV_PCM_FMTBIT_S16_LE,
- },
- .ops = &tegra_i2s_dai_ops,
- .symmetric_rates = 1,
+ .capture = {
+ .channels_min = 2,
+ .channels_max = 2,
+ .rates = SNDRV_PCM_RATE_8000_96000,
+ .formats = SNDRV_PCM_FMTBIT_S16_LE,
},
+ .ops = &tegra_i2s_dai_ops,
+ .symmetric_rates = 1,
};
static __devinit int tegra_i2s_platform_probe(struct platform_device *pdev)
{
struct tegra_i2s * i2s;
struct resource *mem, *memregion, *dmareq;
+ u32 of_dma[2];
+ u32 dma_ch;
int ret;
- if ((pdev->id < 0) ||
- (pdev->id >= ARRAY_SIZE(tegra_i2s_dai))) {
- dev_err(&pdev->dev, "ID %d out of range\n", pdev->id);
- return -EINVAL;
- }
-
- /*
- * FIXME: Until a codec driver exists for the tegra DAS, hard-code a
- * 1:1 mapping between audio controllers and audio ports.
- */
- ret = tegra_das_connect_dap_to_dac(TEGRA_DAS_DAP_ID_1 + pdev->id,
- TEGRA_DAS_DAP_SEL_DAC1 + pdev->id);
- if (ret) {
- dev_err(&pdev->dev, "Can't set up DAP connection\n");
- return ret;
- }
- ret = tegra_das_connect_dac_to_dap(TEGRA_DAS_DAC_ID_1 + pdev->id,
- TEGRA_DAS_DAC_SEL_DAP1 + pdev->id);
- if (ret) {
- dev_err(&pdev->dev, "Can't set up DAC connection\n");
- return ret;
- }
-
- i2s = kzalloc(sizeof(struct tegra_i2s), GFP_KERNEL);
+ i2s = devm_kzalloc(&pdev->dev, sizeof(struct tegra_i2s), GFP_KERNEL);
if (!i2s) {
dev_err(&pdev->dev, "Can't allocate tegra_i2s\n");
ret = -ENOMEM;
- goto exit;
+ goto err;
}
dev_set_drvdata(&pdev->dev, i2s);
+ i2s->dai = tegra_i2s_dai_template;
+ i2s->dai.name = dev_name(&pdev->dev);
+
i2s->clk_i2s = clk_get(&pdev->dev, NULL);
if (IS_ERR(i2s->clk_i2s)) {
dev_err(&pdev->dev, "Can't retrieve i2s clock\n");
ret = PTR_ERR(i2s->clk_i2s);
- goto err_free;
+ goto err;
}
mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
@@ -404,104 +363,93 @@ static __devinit int tegra_i2s_platform_probe(struct platform_device *pdev)
dmareq = platform_get_resource(pdev, IORESOURCE_DMA, 0);
if (!dmareq) {
- dev_err(&pdev->dev, "No DMA resource\n");
- ret = -ENODEV;
- goto err_clk_put;
+ if (of_property_read_u32_array(pdev->dev.of_node,
+ "nvidia,dma-request-selector",
+ of_dma, 2) < 0) {
+ dev_err(&pdev->dev, "No DMA resource\n");
+ ret = -ENODEV;
+ goto err_clk_put;
+ }
+ dma_ch = of_dma[1];
+ } else {
+ dma_ch = dmareq->start;
}
- memregion = request_mem_region(mem->start, resource_size(mem),
- DRV_NAME);
+ memregion = devm_request_mem_region(&pdev->dev, mem->start,
+ resource_size(mem), DRV_NAME);
if (!memregion) {
dev_err(&pdev->dev, "Memory region already claimed\n");
ret = -EBUSY;
goto err_clk_put;
}
- i2s->regs = ioremap(mem->start, resource_size(mem));
+ i2s->regs = devm_ioremap(&pdev->dev, mem->start, resource_size(mem));
if (!i2s->regs) {
dev_err(&pdev->dev, "ioremap failed\n");
ret = -ENOMEM;
- goto err_release;
+ goto err_clk_put;
}
i2s->capture_dma_data.addr = mem->start + TEGRA_I2S_FIFO2;
i2s->capture_dma_data.wrap = 4;
i2s->capture_dma_data.width = 32;
- i2s->capture_dma_data.req_sel = dmareq->start;
+ i2s->capture_dma_data.req_sel = dma_ch;
i2s->playback_dma_data.addr = mem->start + TEGRA_I2S_FIFO1;
i2s->playback_dma_data.wrap = 4;
i2s->playback_dma_data.width = 32;
- i2s->playback_dma_data.req_sel = dmareq->start;
+ i2s->playback_dma_data.req_sel = dma_ch;
i2s->reg_ctrl = TEGRA_I2S_CTRL_FIFO_FORMAT_PACKED;
- ret = snd_soc_register_dai(&pdev->dev, &tegra_i2s_dai[pdev->id]);
+ ret = snd_soc_register_dai(&pdev->dev, &i2s->dai);
if (ret) {
dev_err(&pdev->dev, "Could not register DAI: %d\n", ret);
ret = -ENOMEM;
- goto err_unmap;
+ goto err_clk_put;
}
- tegra_i2s_debug_add(i2s, pdev->id);
+ tegra_i2s_debug_add(i2s);
return 0;
-err_unmap:
- iounmap(i2s->regs);
-err_release:
- release_mem_region(mem->start, resource_size(mem));
err_clk_put:
clk_put(i2s->clk_i2s);
-err_free:
- kfree(i2s);
-exit:
+err:
return ret;
}
static int __devexit tegra_i2s_platform_remove(struct platform_device *pdev)
{
struct tegra_i2s *i2s = dev_get_drvdata(&pdev->dev);
- struct resource *res;
snd_soc_unregister_dai(&pdev->dev);
tegra_i2s_debug_remove(i2s);
- iounmap(i2s->regs);
-
- res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- release_mem_region(res->start, resource_size(res));
-
clk_put(i2s->clk_i2s);
- kfree(i2s);
-
return 0;
}
+static const struct of_device_id tegra_i2s_of_match[] __devinitconst = {
+ { .compatible = "nvidia,tegra20-i2s", },
+ {},
+};
+
static struct platform_driver tegra_i2s_driver = {
.driver = {
.name = DRV_NAME,
.owner = THIS_MODULE,
+ .of_match_table = tegra_i2s_of_match,
},
.probe = tegra_i2s_platform_probe,
.remove = __devexit_p(tegra_i2s_platform_remove),
};
-
-static int __init snd_tegra_i2s_init(void)
-{
- return platform_driver_register(&tegra_i2s_driver);
-}
-module_init(snd_tegra_i2s_init);
-
-static void __exit snd_tegra_i2s_exit(void)
-{
- platform_driver_unregister(&tegra_i2s_driver);
-}
-module_exit(snd_tegra_i2s_exit);
+module_platform_driver(tegra_i2s_driver);
MODULE_AUTHOR("Stephen Warren <swarren@nvidia.com>");
MODULE_DESCRIPTION("Tegra I2S ASoC driver");
MODULE_LICENSE("GPL");
MODULE_ALIAS("platform:" DRV_NAME);
+MODULE_DEVICE_TABLE(of, tegra_i2s_of_match);
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-26 09:56:35 +0000