hollalinux
/
linux-sg2042
mirror of https://github.com/sophgo/linux-riscv.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

ASoC: fsl_spdif: Add support for imx6sx platform 

The one difference on imx6sx platform is that the root clock
is shared with ASRC module, so we add a new flags
"shared_root_clock" which means the root clock is not independent,
then we will not do the clk_set_rate and clk_round_rate to avoid
impact ASRC module usage.

As add a new flags, we include the soc specific data struct.

Signed-off-by: Shengjiu Wang <shengjiu.wang@nxp.com>
Reviewed-by: Nicolin Chen <nicoleotsuka@gmail.com>
Link: https://lore.kernel.org/r/7a343edd5f8487abad248a0b862f45fd95067751.1592376770.git.shengjiu.wang@nxp.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Shengjiu Wang 2020-06-17 14:58:01 +08:00 committed by Mark Brown
parent 632108afda
commit f61b9273c3
No known key found for this signature in database
GPG Key ID: 24D68B725D5487D0
1 changed files with 45 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

50
sound/soc/fsl/fsl_spdif.c
View File

@ -42,6 +42,18 @@ static u8 srpc_dpll_locked[] = { 0x0, 0x1, 0x2, 0x3, 0x4, 0xa, 0xb };
#define DEFAULT_RXCLK_SRC 1
/**
* struct fsl_spdif_soc_data: soc specific data
*
* @imx: for imx platform
* @shared_root_clock: flag of sharing a clock source with others;
* so the driver shouldn't set root clock rate
*/
struct fsl_spdif_soc_data {
bool imx;
bool shared_root_clock;
};
/*
* SPDIF control structure
* Defines channel status, subcode and Q sub
@ -89,6 +101,7 @@ struct spdif_mixer_control {
* @dma_params_rx: DMA parameters for receive channel
*/
struct fsl_spdif_priv {
const struct fsl_spdif_soc_data *soc;
struct spdif_mixer_control fsl_spdif_control;
struct snd_soc_dai_driver cpu_dai_drv;
struct platform_device *pdev;
@ -110,6 +123,27 @@ struct fsl_spdif_priv {
u32 regcache_srpc;
};
static struct fsl_spdif_soc_data fsl_spdif_vf610 = {
.imx = false,
.shared_root_clock = false,
};
static struct fsl_spdif_soc_data fsl_spdif_imx35 = {
.imx = true,
.shared_root_clock = false,
};
static struct fsl_spdif_soc_data fsl_spdif_imx6sx = {
.imx = true,
.shared_root_clock = true,
};
/* Check if clk is a root clock that does not share clock source with others */
static inline bool fsl_spdif_can_set_clk_rate(struct fsl_spdif_priv *spdif, int clk)
{
return (clk == STC_TXCLK_SPDIF_ROOT) && !spdif->soc->shared_root_clock;
}
/* DPLL locked and lock loss interrupt handler */
static void spdif_irq_dpll_lock(struct fsl_spdif_priv *spdif_priv)
{
@ -420,8 +454,7 @@ static int spdif_set_sample_rate(struct snd_pcm_substream *substream,
sysclk_df = spdif_priv->sysclk_df[rate];
/* Don't mess up the clocks from other modules */
if (clk != STC_TXCLK_SPDIF_ROOT)
if (!fsl_spdif_can_set_clk_rate(spdif_priv, clk))
goto clk_set_bypass;
/* The S/PDIF block needs a clock of 64 * fs * txclk_df */
@ -1186,7 +1219,7 @@ static int fsl_spdif_probe_txclk(struct fsl_spdif_priv *spdif_priv,
continue;
ret = fsl_spdif_txclk_caldiv(spdif_priv, clk, savesub, index,
i == STC_TXCLK_SPDIF_ROOT);
fsl_spdif_can_set_clk_rate(spdif_priv, i));
if (savesub == ret)
continue;
@ -1230,6 +1263,12 @@ static int fsl_spdif_probe(struct platform_device *pdev)
spdif_priv->pdev = pdev;
spdif_priv->soc = of_device_get_match_data(&pdev->dev);
if (!spdif_priv->soc) {
dev_err(&pdev->dev, "failed to get soc data\n");
return -ENODEV;
}
/* Initialize this copy of the CPU DAI driver structure */
memcpy(&spdif_priv->cpu_dai_drv, &fsl_spdif_dai, sizeof(fsl_spdif_dai));
spdif_priv->cpu_dai_drv.name = dev_name(&pdev->dev);
@ -1359,8 +1398,9 @@ static const struct dev_pm_ops fsl_spdif_pm = {
};
static const struct of_device_id fsl_spdif_dt_ids[] = {
{ .compatible = "fsl,imx35-spdif", },
{ .compatible = "fsl,vf610-spdif", },
{ .compatible = "fsl,imx35-spdif", .data = &fsl_spdif_imx35, },
{ .compatible = "fsl,vf610-spdif", .data = &fsl_spdif_vf610, },
{ .compatible = "fsl,imx6sx-spdif", .data = &fsl_spdif_imx6sx, },
{}
};
MODULE_DEVICE_TABLE(of, fsl_spdif_dt_ids);