#include <sound/initval.h>
#include <sound/soc.h>
#include <sound/dmaengine_pcm.h>
-
#include <linux/spinlock.h>
-
#include "rk_pcm.h"
-#if 0
+#undef DEBUG_SPDIF
+#define DEBUG_SPDIF 0
+
+#if DEBUG_SPDIF
#define RK_SPDIF_DBG(x...) pr_info("rk_spdif:"x)
#else
#define RK_SPDIF_DBG(x...) do { } while (0)
#endif
-
/* Registers */
#define CFGR 0x00
#define SDBLR 0x04
#define INTCR_SDBEIE_MASK (1<<4)
struct rockchip_spdif_info {
- spinlock_t lock;
+ spinlock_t lock;/*lock parmeter setting.*/
void __iomem *regs;
unsigned long clk_rate;
struct clk *clk;
opr |= DMACR_TRAN_DMA_ENABLE;
writel(xfer, regs + XFER);
writel(opr, regs + DMACR);
- RK_SPDIF_DBG("on xfer=0x%x,opr=0x%x\n",
- readl(regs + XFER), readl(regs + DMACR));
+ RK_SPDIF_DBG("on xfer=0x%x,opr=0x%x\n", readl(
+ regs + XFER), readl(regs + DMACR));
} else {
xfer &= ~XFER_TRAN_START;
opr &= ~DMACR_TRAN_DMA_ENABLE;
writel(xfer, regs + XFER);
writel(opr, regs + DMACR);
writel(1<<7, regs + CFGR);
- RK_SPDIF_DBG("off xfer=0x%x,opr=0x%x\n",
- readl(regs + XFER), readl(regs + DMACR));
+ RK_SPDIF_DBG("off xfer=0x%x,opr=0x%x\n", readl(
+ regs + XFER), readl(regs + DMACR));
}
}
-static int spdif_set_syclk(struct snd_soc_dai *cpu_dai,
- int clk_id, unsigned int freq, int dir)
+static int spdif_set_syclk(struct snd_soc_dai *
+ cpu_dai, int clk_id, unsigned int freq, int dir)
{
struct rockchip_spdif_info *spdif = to_info(cpu_dai);
- RK_SPDIF_DBG("Entered %s\n", __func__);
+ RK_SPDIF_DBG("Entered %s sysclk=%d\n", __func__, freq);
spdif->clk_rate = freq;
return 0;
}
-static int spdif_trigger(struct snd_pcm_substream *substream, int cmd,
- struct snd_soc_dai *dai)
+static int spdif_trigger(struct snd_pcm_substream *
+ substream, int cmd, struct snd_soc_dai *dai)
{
struct snd_soc_pcm_runtime *rtd = substream->private_data;
struct rockchip_spdif_info *spdif = to_info(rtd->cpu_dai);
return 0;
}
-
-static int spdif_hw_params(struct snd_pcm_substream *substream,
- struct snd_pcm_hw_params *params,
- struct snd_soc_dai *dai)
+static int spdif_hw_params(struct snd_pcm_substream *
+ substream, struct snd_pcm_hw_params *params,
+ struct snd_soc_dai *dai)
{
struct rockchip_spdif_info *spdif = to_info(dai);
void __iomem *regs = spdif->regs;
RK_SPDIF_DBG("Entered %s\n", __func__);
- if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
+ if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
dai->playback_dma_data = &spdif->dma_playback;
- else {
+ } else {
pr_err("spdif:Capture is not supported\n");
return -EINVAL;
}
chnsr_byte[0] |= (0x1<<1);
chnsr_byte[4] = (0x0<<4)|(0x00<<1|0x0);
}
- writel((chnsr_byte[4] << 16) | (chnsr_byte[4]),
- regs + SPDIF_CHNSR02_ADDR);
+ writel((chnsr_byte[4] << 16)
+ | (chnsr_byte[4]),
+ regs + SPDIF_CHNSR02_ADDR);
writel((chnsr_byte[3] << 24) | (chnsr_byte[2] << 16) |
(chnsr_byte[3] << 8) | (chnsr_byte[2]),
regs + SPDIF_CHNSR01_ADDR);
static int spdif_probe(struct platform_device *pdev)
{
+ /*struct device_node *spdif_np = pdev->dev.of_node;*/
+ struct resource *memregion;
struct resource *mem_res;
struct rockchip_spdif_info *spdif;
- struct clk *spdif_hclk;
int ret;
RK_SPDIF_DBG("Entered %s\n", __func__);
- spdif = devm_kzalloc(&pdev->dev,
- sizeof(struct rockchip_spdif_info),
- GFP_KERNEL);
+ spdif = devm_kzalloc(&pdev->dev, sizeof(
+ struct rockchip_spdif_info), GFP_KERNEL);
if (!spdif) {
dev_err(&pdev->dev, "Can't allocate spdif info\n");
return -ENOMEM;
}
+ platform_set_drvdata(pdev, spdif);
spin_lock_init(&spdif->lock);
+ /* get spdif register regoin. */
mem_res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
if (!mem_res) {
- pr_err("spdif:Unable to get register resource.\n");
- return -ENXIO;
+ dev_err(&pdev->dev, "No memory resource\n");
+ ret = -ENOENT;
+ goto err_;
+ }
+ memregion = devm_request_mem_region(&pdev->
+ dev, mem_res->start,
+ resource_size(mem_res), "rockchip-spdif");
+ if (!memregion) {
+ dev_err(&pdev->dev, "Memory region already claimed\n");
+ ret = -EBUSY;
+ goto err_;
+ }
+ spdif->regs = devm_ioremap(&pdev->dev, memregion->
+ start, resource_size(memregion));
+ if (!spdif->regs) {
+ dev_err(&pdev->dev, "ioremap failed\n");
+ ret = -ENOMEM;
+ goto err_;
}
- spdif->clk = clk_get(&pdev->dev, "spdif_8ch_mclk");
+ /* get spdif clock and init. */
+ spdif->clk = devm_clk_get(&pdev->dev, "spdif_mclk");
if (IS_ERR(spdif->clk)) {
dev_err(&pdev->dev, "Can't retrieve spdif clock\n");
- return PTR_ERR(spdif->clk);
+ ret = -ENOMEM;
+ goto err_;
}
clk_set_rate(spdif->clk, 12288000);
clk_set_rate(spdif->clk, 11289600);
clk_prepare_enable(spdif->clk);
- spdif_hclk = clk_get(&pdev->dev, "spdif_hclk");
- if(IS_ERR(spdif_hclk) ) {
- dev_err(&pdev->dev, "get spdif_hclk failed.\n");
- } else {
- clk_prepare_enable(spdif_hclk);
- }
-
- /* Request S/PDIF Register's memory region */
- if (!request_mem_region(mem_res->start,
- resource_size(mem_res), "rockchip-spdif")) {
- pr_err("spdif:Unable to request register region\n");
- ret = -EBUSY;
- goto err_clk_put;
- }
-
- spdif->regs = devm_ioremap(&pdev->dev,
- mem_res->start, resource_size(mem_res));
- if (!spdif->regs) {
- dev_err(&pdev->dev, "ioremap failed\n");
- ret = -ENOMEM;
- goto err_clk_put;
- }
-
spdif->dma_playback.addr = mem_res->start + DATA_OUTBUF;
spdif->dma_playback.addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES;
spdif->dma_playback.maxburst = 4;
/* set dev name to driver->name for sound card register */
dev_set_name(&pdev->dev, "%s", pdev->dev.driver->name);
- ret = snd_soc_register_component(&pdev->dev,
- &rockchip_spdif_component,
- &rockchip_spdif_dai, 1);
+ ret = snd_soc_register_component(&pdev->
+ dev, &rockchip_spdif_component, &rockchip_spdif_dai, 1);
if (ret) {
dev_err(&pdev->dev, "Could not register DAI: %d\n", ret);
ret = -ENOMEM;
- goto err_clk_put;
+ goto err_;
}
ret = rockchip_pcm_platform_register(&pdev->dev);
if (ret) {
dev_err(&pdev->dev, "Could not register PCM: %d\n", ret);
- goto err_unregister_component;
+ goto err_;
}
- dev_set_drvdata(&pdev->dev, spdif);
- writel_relaxed(SPDIF_CHANNEL_SEL_8CH,
- RK_GRF_VIRT + RK3288_GRF_SOC_CON2);
-
RK_SPDIF_DBG("spdif:spdif probe ok!\n");
return 0;
-err_unregister_component:
- snd_soc_unregister_component(&pdev->dev);
-err_clk_put:
- clk_put(spdif->clk);
+err_:
+ platform_set_drvdata(pdev, NULL);
+
return ret;
}
projects / firefly-linux-kernel-4.4.55.git / blobdiff