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Code

ASoC: convert Tegra20 SPDIF driver to regmap

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Signed-off-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
This commit is contained in:
Stephen Warren 2012-04-13 12:14:07 -06:00 committed by Mark Brown
parent c1607416aa
commit 5939ae7475
2 changed files with 92 additions and 84 deletions
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173
sound/soc/tegra/tegra20_spdif.c
View File

@ -21,13 +21,12 @@
*/
#include <linux/clk.h>
#include <linux/debugfs.h>
#include <linux/device.h>
#include <linux/io.h>
#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/pm_runtime.h>
#include <linux/seq_file.h>
#include <linux/regmap.h>
#include <linux/slab.h>
#include <sound/core.h>
#include <sound/pcm.h>
@ -41,12 +40,14 @@
static inline void tegra20_spdif_write(struct tegra20_spdif *spdif, u32 reg,
u32 val)
{
__raw_writel(val, spdif->regs + reg);
regmap_write(spdif->regmap, reg, val);
}
static inline u32 tegra20_spdif_read(struct tegra20_spdif *spdif, u32 reg)
{
return __raw_readl(spdif->regs + reg);
u32 val;
regmap_read(spdif->regmap, reg, &val);
return val;
}
static int tegra20_spdif_runtime_suspend(struct device *dev)
@ -72,78 +73,6 @@ static int tegra20_spdif_runtime_resume(struct device *dev)
return 0;
}
#ifdef CONFIG_DEBUG_FS
static int tegra20_spdif_show(struct seq_file *s, void *unused)
{
#define REG(r) { r, #r }
static const struct {
int offset;
const char *name;
} regs[] = {
REG(TEGRA20_SPDIF_CTRL),
REG(TEGRA20_SPDIF_STATUS),
REG(TEGRA20_SPDIF_STROBE_CTRL),
REG(TEGRA20_SPDIF_DATA_FIFO_CSR),
REG(TEGRA20_SPDIF_CH_STA_RX_A),
REG(TEGRA20_SPDIF_CH_STA_RX_B),
REG(TEGRA20_SPDIF_CH_STA_RX_C),
REG(TEGRA20_SPDIF_CH_STA_RX_D),
REG(TEGRA20_SPDIF_CH_STA_RX_E),
REG(TEGRA20_SPDIF_CH_STA_RX_F),
REG(TEGRA20_SPDIF_CH_STA_TX_A),
REG(TEGRA20_SPDIF_CH_STA_TX_B),
REG(TEGRA20_SPDIF_CH_STA_TX_C),
REG(TEGRA20_SPDIF_CH_STA_TX_D),
REG(TEGRA20_SPDIF_CH_STA_TX_E),
REG(TEGRA20_SPDIF_CH_STA_TX_F),
};
#undef REG
struct tegra20_spdif *spdif = s->private;
int i;
for (i = 0; i < ARRAY_SIZE(regs); i++) {
u32 val = tegra20_spdif_read(spdif, regs[i].offset);
seq_printf(s, "%s = %08x\n", regs[i].name, val);
}
return 0;
}
static int tegra20_spdif_debug_open(struct inode *inode, struct file *file)
{
return single_open(file, tegra20_spdif_show, inode->i_private);
}
static const struct file_operations tegra20_spdif_debug_fops = {
.open = tegra20_spdif_debug_open,
.read = seq_read,
.llseek = seq_lseek,
.release = single_release,
};
static void tegra20_spdif_debug_add(struct tegra20_spdif *spdif)
{
spdif->debug = debugfs_create_file(DRV_NAME, S_IRUGO,
snd_soc_debugfs_root, spdif,
&tegra20_spdif_debug_fops);
}
static void tegra20_spdif_debug_remove(struct tegra20_spdif *spdif)
{
if (spdif->debug)
debugfs_remove(spdif->debug);
}
#else
static inline void tegra20_spdif_debug_add(struct tegra20_spdif *spdif)
{
}
static inline void tegra20_spdif_debug_remove(struct tegra20_spdif *spdif)
{
}
#endif
static int tegra20_spdif_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params,
struct snd_soc_dai *dai)
@ -261,10 +190,86 @@ static struct snd_soc_dai_driver tegra20_spdif_dai = {
.ops = &tegra20_spdif_dai_ops,
};
static bool tegra20_spdif_wr_rd_reg(struct device *dev, unsigned int reg)
{
switch (reg) {
case TEGRA20_SPDIF_CTRL:
case TEGRA20_SPDIF_STATUS:
case TEGRA20_SPDIF_STROBE_CTRL:
case TEGRA20_SPDIF_DATA_FIFO_CSR:
case TEGRA20_SPDIF_DATA_OUT:
case TEGRA20_SPDIF_DATA_IN:
case TEGRA20_SPDIF_CH_STA_RX_A:
case TEGRA20_SPDIF_CH_STA_RX_B:
case TEGRA20_SPDIF_CH_STA_RX_C:
case TEGRA20_SPDIF_CH_STA_RX_D:
case TEGRA20_SPDIF_CH_STA_RX_E:
case TEGRA20_SPDIF_CH_STA_RX_F:
case TEGRA20_SPDIF_CH_STA_TX_A:
case TEGRA20_SPDIF_CH_STA_TX_B:
case TEGRA20_SPDIF_CH_STA_TX_C:
case TEGRA20_SPDIF_CH_STA_TX_D:
case TEGRA20_SPDIF_CH_STA_TX_E:
case TEGRA20_SPDIF_CH_STA_TX_F:
case TEGRA20_SPDIF_USR_STA_RX_A:
case TEGRA20_SPDIF_USR_DAT_TX_A:
return true;
default:
return false;
};
}
static bool tegra20_spdif_volatile_reg(struct device *dev, unsigned int reg)
{
switch (reg) {
case TEGRA20_SPDIF_STATUS:
case TEGRA20_SPDIF_DATA_FIFO_CSR:
case TEGRA20_SPDIF_DATA_OUT:
case TEGRA20_SPDIF_DATA_IN:
case TEGRA20_SPDIF_CH_STA_RX_A:
case TEGRA20_SPDIF_CH_STA_RX_B:
case TEGRA20_SPDIF_CH_STA_RX_C:
case TEGRA20_SPDIF_CH_STA_RX_D:
case TEGRA20_SPDIF_CH_STA_RX_E:
case TEGRA20_SPDIF_CH_STA_RX_F:
case TEGRA20_SPDIF_USR_STA_RX_A:
case TEGRA20_SPDIF_USR_DAT_TX_A:
return true;
default:
return false;
};
}
static bool tegra20_spdif_precious_reg(struct device *dev, unsigned int reg)
{
switch (reg) {
case TEGRA20_SPDIF_DATA_OUT:
case TEGRA20_SPDIF_DATA_IN:
case TEGRA20_SPDIF_USR_STA_RX_A:
case TEGRA20_SPDIF_USR_DAT_TX_A:
return true;
default:
return false;
};
}
static const struct regmap_config tegra20_spdif_regmap_config = {
.reg_bits = 32,
.reg_stride = 4,
.val_bits = 32,
.max_register = TEGRA20_SPDIF_USR_DAT_TX_A,
.writeable_reg = tegra20_spdif_wr_rd_reg,
.readable_reg = tegra20_spdif_wr_rd_reg,
.volatile_reg = tegra20_spdif_volatile_reg,
.precious_reg = tegra20_spdif_precious_reg,
.cache_type = REGCACHE_RBTREE,
};
static __devinit int tegra20_spdif_platform_probe(struct platform_device *pdev)
{
struct tegra20_spdif *spdif;
struct resource *mem, *memregion, *dmareq;
void __iomem *regs;
int ret;
spdif = devm_kzalloc(&pdev->dev, sizeof(struct tegra20_spdif),
@ -305,13 +310,21 @@ static __devinit int tegra20_spdif_platform_probe(struct platform_device *pdev)
goto err_clk_put;
}
spdif->regs = devm_ioremap(&pdev->dev, mem->start, resource_size(mem));
if (!spdif->regs) {
regs = devm_ioremap(&pdev->dev, mem->start, resource_size(mem));
if (!regs) {
dev_err(&pdev->dev, "ioremap failed\n");
ret = -ENOMEM;
goto err_clk_put;
}
spdif->regmap = devm_regmap_init_mmio(&pdev->dev, regs,
&tegra20_spdif_regmap_config);
if (IS_ERR(spdif->regmap)) {
dev_err(&pdev->dev, "regmap init failed\n");
ret = PTR_ERR(spdif->regmap);
goto err_clk_put;
}
spdif->playback_dma_data.addr = mem->start + TEGRA20_SPDIF_DATA_OUT;
spdif->playback_dma_data.wrap = 4;
spdif->playback_dma_data.width = 32;
@ -337,8 +350,6 @@ static __devinit int tegra20_spdif_platform_probe(struct platform_device *pdev)
goto err_unregister_dai;
}
tegra20_spdif_debug_add(spdif);
return 0;
err_unregister_dai:
@ -365,8 +376,6 @@ static int __devexit tegra20_spdif_platform_remove(struct platform_device *pdev)
tegra_pcm_platform_unregister(&pdev->dev);
snd_soc_unregister_dai(&pdev->dev);
tegra20_spdif_debug_remove(spdif);
clk_put(spdif->clk_spdif_out);
return 0;

3
sound/soc/tegra/tegra20_spdif.h
View File

@ -464,8 +464,7 @@ struct tegra20_spdif {
struct clk *clk_spdif_out;
struct tegra_pcm_dma_params capture_dma_data;
struct tegra_pcm_dma_params playback_dma_data;
void __iomem *regs;
struct dentry *debug;
struct regmap *regmap;
u32 reg_ctrl;
};