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Diffstat (limited to 'sound/soc/blackfin/bf5xx-tdm.c')
-rw-r--r--sound/soc/blackfin/bf5xx-tdm.c110
1 files changed, 38 insertions, 72 deletions
diff --git a/sound/soc/blackfin/bf5xx-tdm.c b/sound/soc/blackfin/bf5xx-tdm.c
index 5515ac9e05c7..a822d1ee1380 100644
--- a/sound/soc/blackfin/bf5xx-tdm.c
+++ b/sound/soc/blackfin/bf5xx-tdm.c
@@ -46,43 +46,6 @@
#include "bf5xx-sport.h"
#include "bf5xx-tdm.h"
-static struct bf5xx_tdm_port bf5xx_tdm;
-static int sport_num = CONFIG_SND_BF5XX_SPORT_NUM;
-
-static struct sport_param sport_params[2] = {
- {
- .dma_rx_chan = CH_SPORT0_RX,
- .dma_tx_chan = CH_SPORT0_TX,
- .err_irq = IRQ_SPORT0_ERROR,
- .regs = (struct sport_register *)SPORT0_TCR1,
- },
- {
- .dma_rx_chan = CH_SPORT1_RX,
- .dma_tx_chan = CH_SPORT1_TX,
- .err_irq = IRQ_SPORT1_ERROR,
- .regs = (struct sport_register *)SPORT1_TCR1,
- }
-};
-
-/*
- * Setting the TFS pin selector for SPORT 0 based on whether the selected
- * port id F or G. If the port is F then no conflict should exist for the
- * TFS. When Port G is selected and EMAC then there is a conflict between
- * the PHY interrupt line and TFS. Current settings prevent the conflict
- * by ignoring the TFS pin when Port G is selected. This allows both
- * codecs and EMAC using Port G concurrently.
- */
-#ifdef CONFIG_BF527_SPORT0_PORTG
-#define LOCAL_SPORT0_TFS (0)
-#else
-#define LOCAL_SPORT0_TFS (P_SPORT0_TFS)
-#endif
-
-static u16 sport_req[][7] = { {P_SPORT0_DTPRI, P_SPORT0_TSCLK, P_SPORT0_RFS,
- P_SPORT0_DRPRI, P_SPORT0_RSCLK, LOCAL_SPORT0_TFS, 0},
- {P_SPORT1_DTPRI, P_SPORT1_TSCLK, P_SPORT1_RFS, P_SPORT1_DRPRI,
- P_SPORT1_RSCLK, P_SPORT1_TFS, 0} };
-
static int bf5xx_tdm_set_dai_fmt(struct snd_soc_dai *cpu_dai,
unsigned int fmt)
{
@@ -119,14 +82,16 @@ static int bf5xx_tdm_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params,
struct snd_soc_dai *dai)
{
+ struct sport_device *sport_handle = snd_soc_dai_get_drvdata(dai);
+ struct bf5xx_tdm_port *bf5xx_tdm = sport_handle->private_data;
int ret = 0;
- bf5xx_tdm.tcr2 &= ~0x1f;
- bf5xx_tdm.rcr2 &= ~0x1f;
+ bf5xx_tdm->tcr2 &= ~0x1f;
+ bf5xx_tdm->rcr2 &= ~0x1f;
switch (params_format(params)) {
case SNDRV_PCM_FORMAT_S32_LE:
- bf5xx_tdm.tcr2 |= 31;
- bf5xx_tdm.rcr2 |= 31;
+ bf5xx_tdm->tcr2 |= 31;
+ bf5xx_tdm->rcr2 |= 31;
sport_handle->wdsize = 4;
break;
/* at present, we only support 32bit transfer */
@@ -136,7 +101,7 @@ static int bf5xx_tdm_hw_params(struct snd_pcm_substream *substream,
break;
}
- if (!bf5xx_tdm.configured) {
+ if (!bf5xx_tdm->configured) {
/*
* TX and RX are not independent,they are enabled at the
* same time, even if only one side is running. So, we
@@ -145,21 +110,21 @@ static int bf5xx_tdm_hw_params(struct snd_pcm_substream *substream,
*
* CPU DAI:slave mode.
*/
- ret = sport_config_rx(sport_handle, bf5xx_tdm.rcr1,
- bf5xx_tdm.rcr2, 0, 0);
+ ret = sport_config_rx(sport_handle, bf5xx_tdm->rcr1,
+ bf5xx_tdm->rcr2, 0, 0);
if (ret) {
pr_err("SPORT is busy!\n");
return -EBUSY;
}
- ret = sport_config_tx(sport_handle, bf5xx_tdm.tcr1,
- bf5xx_tdm.tcr2, 0, 0);
+ ret = sport_config_tx(sport_handle, bf5xx_tdm->tcr1,
+ bf5xx_tdm->tcr2, 0, 0);
if (ret) {
pr_err("SPORT is busy!\n");
return -EBUSY;
}
- bf5xx_tdm.configured = 1;
+ bf5xx_tdm->configured = 1;
}
return 0;
@@ -168,15 +133,20 @@ static int bf5xx_tdm_hw_params(struct snd_pcm_substream *substream,
static void bf5xx_tdm_shutdown(struct snd_pcm_substream *substream,
struct snd_soc_dai *dai)
{
+ struct sport_device *sport_handle = snd_soc_dai_get_drvdata(dai);
+ struct bf5xx_tdm_port *bf5xx_tdm = sport_handle->private_data;
+
/* No active stream, SPORT is allowed to be configured again. */
if (!dai->active)
- bf5xx_tdm.configured = 0;
+ bf5xx_tdm->configured = 0;
}
static int bf5xx_tdm_set_channel_map(struct snd_soc_dai *dai,
unsigned int tx_num, unsigned int *tx_slot,
unsigned int rx_num, unsigned int *rx_slot)
{
+ struct sport_device *sport_handle = snd_soc_dai_get_drvdata(dai);
+ struct bf5xx_tdm_port *bf5xx_tdm = sport_handle->private_data;
int i;
unsigned int slot;
unsigned int tx_mapped = 0, rx_mapped = 0;
@@ -189,7 +159,7 @@ static int bf5xx_tdm_set_channel_map(struct snd_soc_dai *dai,
slot = tx_slot[i];
if ((slot < BFIN_TDM_DAI_MAX_SLOTS) &&
(!(tx_mapped & (1 << slot)))) {
- bf5xx_tdm.tx_map[i] = slot;
+ bf5xx_tdm->tx_map[i] = slot;
tx_mapped |= 1 << slot;
} else
return -EINVAL;
@@ -198,7 +168,7 @@ static int bf5xx_tdm_set_channel_map(struct snd_soc_dai *dai,
slot = rx_slot[i];
if ((slot < BFIN_TDM_DAI_MAX_SLOTS) &&
(!(rx_mapped & (1 << slot)))) {
- bf5xx_tdm.rx_map[i] = slot;
+ bf5xx_tdm->rx_map[i] = slot;
rx_mapped |= 1 << slot;
} else
return -EINVAL;
@@ -212,12 +182,14 @@ static int bf5xx_tdm_suspend(struct snd_soc_dai *dai)
{
struct sport_device *sport = snd_soc_dai_get_drvdata(dai);
- if (!dai->active)
- return 0;
- if (dai->capture_active)
- sport_rx_stop(sport);
if (dai->playback_active)
sport_tx_stop(sport);
+ if (dai->capture_active)
+ sport_rx_stop(sport);
+
+ /* isolate sync/clock pins from codec while sports resume */
+ peripheral_free_list(sport->pin_req);
+
return 0;
}
@@ -226,9 +198,6 @@ static int bf5xx_tdm_resume(struct snd_soc_dai *dai)
int ret;
struct sport_device *sport = snd_soc_dai_get_drvdata(dai);
- if (!dai->active)
- return 0;
-
ret = sport_set_multichannel(sport, 8, 0xFF, 1);
if (ret) {
pr_err("SPORT is busy!\n");
@@ -247,6 +216,8 @@ static int bf5xx_tdm_resume(struct snd_soc_dai *dai)
ret = -EBUSY;
}
+ peripheral_request_list(sport->pin_req, "soc-audio");
+
return 0;
}
@@ -280,20 +251,14 @@ static struct snd_soc_dai_driver bf5xx_tdm_dai = {
static int __devinit bfin_tdm_probe(struct platform_device *pdev)
{
- int ret = 0;
-
- if (peripheral_request_list(&sport_req[sport_num][0], "soc-audio")) {
- pr_err("Requesting Peripherals failed\n");
- return -EFAULT;
- }
+ struct sport_device *sport_handle;
+ int ret;
- /* request DMA for SPORT */
- sport_handle = sport_init(&sport_params[sport_num], 4, \
- 8 * sizeof(u32), NULL);
- if (!sport_handle) {
- peripheral_free_list(&sport_req[sport_num][0]);
+ /* configure SPORT for TDM */
+ sport_handle = sport_init(pdev, 4, 8 * sizeof(u32),
+ sizeof(struct bf5xx_tdm_port));
+ if (!sport_handle)
return -ENODEV;
- }
/* SPORT works in TDM mode */
ret = sport_set_multichannel(sport_handle, 8, 0xFF, 1);
@@ -323,18 +288,19 @@ static int __devinit bfin_tdm_probe(struct platform_device *pdev)
goto sport_config_err;
}
- sport_handle->private_data = &bf5xx_tdm;
return 0;
sport_config_err:
- peripheral_free_list(&sport_req[sport_num][0]);
+ sport_done(sport_handle);
return ret;
}
static int __devexit bfin_tdm_remove(struct platform_device *pdev)
{
- peripheral_free_list(&sport_req[sport_num][0]);
+ struct sport_device *sport_handle = platform_get_drvdata(pdev);
+
snd_soc_unregister_dai(&pdev->dev);
+ sport_done(sport_handle);
return 0;
}
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.