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McBSP: OMAP3: Add sidetone feature

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Add sidetone feature to McBSP instances 2 and 3 on OMAP3 based devices.

Signed-off-by: Ilkka Koskinen <ilkka.koskinen@nokia.com>
Acked-by: Peter Ujfalusi <peter.ujfalusi@nokia.com>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Tested-by: Jarkko Nikula <jhnikula@gmail.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
This commit is contained in:
Eero Nurkkala 2010-02-22 12:21:11 +00:00 committed by Tony Lindgren
parent bce0668366
commit d912fa9255
3 changed files with 463 additions and 1 deletions
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2
arch/arm/mach-omap2/mcbsp.c
View File

@ -136,6 +136,7 @@ static struct omap_mcbsp_platform_data omap34xx_mcbsp_pdata[] = {
},
{
.phys_base = OMAP34XX_MCBSP2_BASE,
.phys_base_st = OMAP34XX_MCBSP2_ST_BASE,
.dma_rx_sync = OMAP24XX_DMA_MCBSP2_RX,
.dma_tx_sync = OMAP24XX_DMA_MCBSP2_TX,
.rx_irq = INT_24XX_MCBSP2_IRQ_RX,
@ -145,6 +146,7 @@ static struct omap_mcbsp_platform_data omap34xx_mcbsp_pdata[] = {
},
{
.phys_base = OMAP34XX_MCBSP3_BASE,
.phys_base_st = OMAP34XX_MCBSP3_ST_BASE,
.dma_rx_sync = OMAP24XX_DMA_MCBSP3_RX,
.dma_tx_sync = OMAP24XX_DMA_MCBSP3_TX,
.rx_irq = INT_24XX_MCBSP3_IRQ_RX,

60
arch/arm/plat-omap/include/plat/mcbsp.h
View File

@ -49,6 +49,9 @@
#define OMAP34XX_MCBSP1_BASE 0x48074000
#define OMAP34XX_MCBSP2_BASE 0x49022000
#define OMAP34XX_MCBSP2_ST_BASE 0x49028000
#define OMAP34XX_MCBSP3_BASE 0x49024000
#define OMAP34XX_MCBSP3_ST_BASE 0x4902A000
#define OMAP34XX_MCBSP3_BASE 0x49024000
#define OMAP34XX_MCBSP4_BASE 0x49026000
#define OMAP34XX_MCBSP5_BASE 0x48096000
@ -146,6 +149,15 @@
#define OMAP_MCBSP_REG_WAKEUPEN 0xA8
#define OMAP_MCBSP_REG_XCCR 0xAC
#define OMAP_MCBSP_REG_RCCR 0xB0
#define OMAP_MCBSP_REG_SSELCR 0xBC
#define OMAP_ST_REG_REV 0x00
#define OMAP_ST_REG_SYSCONFIG 0x10
#define OMAP_ST_REG_IRQSTATUS 0x18
#define OMAP_ST_REG_IRQENABLE 0x1C
#define OMAP_ST_REG_SGAINCR 0x24
#define OMAP_ST_REG_SFIRCR 0x28
#define OMAP_ST_REG_SSELCR 0x2C
#define AUDIO_MCBSP_DATAWRITE (OMAP24XX_MCBSP2_BASE + OMAP_MCBSP_REG_DXR1)
#define AUDIO_MCBSP_DATAREAD (OMAP24XX_MCBSP2_BASE + OMAP_MCBSP_REG_DRR1)
@ -264,6 +276,24 @@
#define ENAWAKEUP 0x0004
#define SOFTRST 0x0002
/********************** McBSP SSELCR bit definitions ***********************/
#define SIDETONEEN 0x0400
/********************** McBSP Sidetone SYSCONFIG bit definitions ***********/
#define ST_AUTOIDLE 0x0001
/********************** McBSP Sidetone SGAINCR bit definitions *************/
#define ST_CH1GAIN(value) ((value<<16)) /* Bits 16:31 */
#define ST_CH0GAIN(value) (value) /* Bits 0:15 */
/********************** McBSP Sidetone SFIRCR bit definitions **************/
#define ST_FIRCOEFF(value) (value) /* Bits 0:15 */
/********************** McBSP Sidetone SSELCR bit definitions **************/
#define ST_COEFFWRDONE 0x0004
#define ST_COEFFWREN 0x0002
#define ST_SIDETONEEN 0x0001
/********************** McBSP DMA operating modes **************************/
#define MCBSP_DMA_MODE_ELEMENT 0
#define MCBSP_DMA_MODE_THRESHOLD 1
@ -374,10 +404,22 @@ struct omap_mcbsp_platform_data {
u16 rx_irq, tx_irq;
struct omap_mcbsp_ops *ops;
#ifdef CONFIG_ARCH_OMAP3
/* Sidetone block for McBSP 2 and 3 */
unsigned long phys_base_st;
u16 buffer_size;
#endif
};
struct omap_mcbsp_st_data {
void __iomem *io_base_st;
bool running;
bool enabled;
s16 taps[128]; /* Sidetone filter coefficients */
int nr_taps; /* Number of filter coefficients in use */
s16 ch0gain;
s16 ch1gain;
};
struct omap_mcbsp {
struct device *dev;
unsigned long phys_base;
@ -410,6 +452,7 @@ struct omap_mcbsp {
struct clk *iclk;
struct clk *fclk;
#ifdef CONFIG_ARCH_OMAP3
struct omap_mcbsp_st_data *st_data;
int dma_op_mode;
u16 max_tx_thres;
u16 max_rx_thres;
@ -459,4 +502,21 @@ int omap_mcbsp_pollread(unsigned int id, u16 * buf);
int omap_mcbsp_pollwrite(unsigned int id, u16 buf);
int omap_mcbsp_set_io_type(unsigned int id, omap_mcbsp_io_type_t io_type);
#ifdef CONFIG_ARCH_OMAP3
/* Sidetone specific API */
int omap_st_set_chgain(unsigned int id, int channel, s16 chgain);
int omap_st_get_chgain(unsigned int id, int channel, s16 *chgain);
int omap_st_enable(unsigned int id);
int omap_st_disable(unsigned int id);
int omap_st_is_enabled(unsigned int id);
#else
static inline int omap_st_set_chgain(unsigned int id, int channel,
s16 chgain) { return 0; }
static inline int omap_st_get_chgain(unsigned int id, int channel,
s16 *chgain) { return 0; }
static inline int omap_st_enable(unsigned int id) { return 0; }
static inline int omap_st_disable(unsigned int id) { return 0; }
static inline int omap_st_is_enabled(unsigned int id) { return 0; }
#endif
#endif

402
arch/arm/plat-omap/mcbsp.c
View File

@ -27,6 +27,8 @@
#include <plat/dma.h>
#include <plat/mcbsp.h>
#include "../mach-omap2/cm-regbits-34xx.h"
struct omap_mcbsp **mcbsp_ptr;
int omap_mcbsp_count, omap_mcbsp_cache_size;
@ -58,6 +60,18 @@ int omap_mcbsp_read(struct omap_mcbsp *mcbsp, u16 reg, bool from_cache)
}
}
#ifdef CONFIG_ARCH_OMAP3
void omap_mcbsp_st_write(struct omap_mcbsp *mcbsp, u16 reg, u32 val)
{
__raw_writel(val, mcbsp->st_data->io_base_st + reg);
}
int omap_mcbsp_st_read(struct omap_mcbsp *mcbsp, u16 reg)
{
return __raw_readl(mcbsp->st_data->io_base_st + reg);
}
#endif
#define MCBSP_READ(mcbsp, reg) \
omap_mcbsp_read(mcbsp, OMAP_MCBSP_REG_##reg, 0)
#define MCBSP_WRITE(mcbsp, reg, val) \
@ -68,6 +82,11 @@ int omap_mcbsp_read(struct omap_mcbsp *mcbsp, u16 reg, bool from_cache)
#define omap_mcbsp_check_valid_id(id) (id < omap_mcbsp_count)
#define id_to_mcbsp_ptr(id) mcbsp_ptr[id];
#define MCBSP_ST_READ(mcbsp, reg) \
omap_mcbsp_st_read(mcbsp, OMAP_ST_REG_##reg)
#define MCBSP_ST_WRITE(mcbsp, reg, val) \
omap_mcbsp_st_write(mcbsp, OMAP_ST_REG_##reg, val)
static void omap_mcbsp_dump_reg(u8 id)
{
struct omap_mcbsp *mcbsp = id_to_mcbsp_ptr(id);
@ -211,6 +230,257 @@ void omap_mcbsp_config(unsigned int id, const struct omap_mcbsp_reg_cfg *config)
EXPORT_SYMBOL(omap_mcbsp_config);
#ifdef CONFIG_ARCH_OMAP3
static void omap_st_on(struct omap_mcbsp *mcbsp)
{
unsigned int w;
/*
* Sidetone uses McBSP ICLK - which must not idle when sidetones
* are enabled or sidetones start sounding ugly.
*/
w = cm_read_mod_reg(OMAP3430_PER_MOD, CM_AUTOIDLE);
w &= ~(1 << (mcbsp->id - 2));
cm_write_mod_reg(w, OMAP3430_PER_MOD, CM_AUTOIDLE);
/* Enable McBSP Sidetone */
w = MCBSP_READ(mcbsp, SSELCR);
MCBSP_WRITE(mcbsp, SSELCR, w | SIDETONEEN);
w = MCBSP_ST_READ(mcbsp, SYSCONFIG);
MCBSP_ST_WRITE(mcbsp, SYSCONFIG, w & ~(ST_AUTOIDLE));
/* Enable Sidetone from Sidetone Core */
w = MCBSP_ST_READ(mcbsp, SSELCR);
MCBSP_ST_WRITE(mcbsp, SSELCR, w | ST_SIDETONEEN);
}
static void omap_st_off(struct omap_mcbsp *mcbsp)
{
unsigned int w;
w = MCBSP_ST_READ(mcbsp, SSELCR);
MCBSP_ST_WRITE(mcbsp, SSELCR, w & ~(ST_SIDETONEEN));
w = MCBSP_ST_READ(mcbsp, SYSCONFIG);
MCBSP_ST_WRITE(mcbsp, SYSCONFIG, w | ST_AUTOIDLE);
w = MCBSP_READ(mcbsp, SSELCR);
MCBSP_WRITE(mcbsp, SSELCR, w & ~(SIDETONEEN));
w = cm_read_mod_reg(OMAP3430_PER_MOD, CM_AUTOIDLE);
w |= 1 << (mcbsp->id - 2);
cm_write_mod_reg(w, OMAP3430_PER_MOD, CM_AUTOIDLE);
}
static void omap_st_fir_write(struct omap_mcbsp *mcbsp, s16 *fir)
{
u16 val, i;
val = MCBSP_ST_READ(mcbsp, SYSCONFIG);
MCBSP_ST_WRITE(mcbsp, SYSCONFIG, val & ~(ST_AUTOIDLE));
val = MCBSP_ST_READ(mcbsp, SSELCR);
if (val & ST_COEFFWREN)
MCBSP_ST_WRITE(mcbsp, SSELCR, val & ~(ST_COEFFWREN));
MCBSP_ST_WRITE(mcbsp, SSELCR, val | ST_COEFFWREN);
for (i = 0; i < 128; i++)
MCBSP_ST_WRITE(mcbsp, SFIRCR, fir[i]);
i = 0;
val = MCBSP_ST_READ(mcbsp, SSELCR);
while (!(val & ST_COEFFWRDONE) && (++i < 1000))
val = MCBSP_ST_READ(mcbsp, SSELCR);
MCBSP_ST_WRITE(mcbsp, SSELCR, val & ~(ST_COEFFWREN));
if (i == 1000)
dev_err(mcbsp->dev, "McBSP FIR load error!\n");
}
static void omap_st_chgain(struct omap_mcbsp *mcbsp)
{
u16 w;
struct omap_mcbsp_st_data *st_data = mcbsp->st_data;
w = MCBSP_ST_READ(mcbsp, SYSCONFIG);
MCBSP_ST_WRITE(mcbsp, SYSCONFIG, w & ~(ST_AUTOIDLE));
w = MCBSP_ST_READ(mcbsp, SSELCR);
MCBSP_ST_WRITE(mcbsp, SGAINCR, ST_CH0GAIN(st_data->ch0gain) | \
ST_CH1GAIN(st_data->ch1gain));
}
int omap_st_set_chgain(unsigned int id, int channel, s16 chgain)
{
struct omap_mcbsp *mcbsp;
struct omap_mcbsp_st_data *st_data;
int ret = 0;
if (!omap_mcbsp_check_valid_id(id)) {
printk(KERN_ERR "%s: Invalid id (%d)\n", __func__, id + 1);
return -ENODEV;
}
mcbsp = id_to_mcbsp_ptr(id);
st_data = mcbsp->st_data;
if (!st_data)
return -ENOENT;
spin_lock_irq(&mcbsp->lock);
if (channel == 0)
st_data->ch0gain = chgain;
else if (channel == 1)
st_data->ch1gain = chgain;
else
ret = -EINVAL;
if (st_data->enabled)
omap_st_chgain(mcbsp);
spin_unlock_irq(&mcbsp->lock);
return ret;
}
EXPORT_SYMBOL(omap_st_set_chgain);
int omap_st_get_chgain(unsigned int id, int channel, s16 *chgain)
{
struct omap_mcbsp *mcbsp;
struct omap_mcbsp_st_data *st_data;
int ret = 0;
if (!omap_mcbsp_check_valid_id(id)) {
printk(KERN_ERR "%s: Invalid id (%d)\n", __func__, id + 1);
return -ENODEV;
}
mcbsp = id_to_mcbsp_ptr(id);
st_data = mcbsp->st_data;
if (!st_data)
return -ENOENT;
spin_lock_irq(&mcbsp->lock);
if (channel == 0)
*chgain = st_data->ch0gain;
else if (channel == 1)
*chgain = st_data->ch1gain;
else
ret = -EINVAL;
spin_unlock_irq(&mcbsp->lock);
return ret;
}
EXPORT_SYMBOL(omap_st_get_chgain);
static int omap_st_start(struct omap_mcbsp *mcbsp)
{
struct omap_mcbsp_st_data *st_data = mcbsp->st_data;
if (st_data && st_data->enabled && !st_data->running) {
omap_st_fir_write(mcbsp, st_data->taps);
omap_st_chgain(mcbsp);
if (!mcbsp->free) {
omap_st_on(mcbsp);
st_data->running = 1;
}
}
return 0;
}
int omap_st_enable(unsigned int id)
{
struct omap_mcbsp *mcbsp;
struct omap_mcbsp_st_data *st_data;
if (!omap_mcbsp_check_valid_id(id)) {
printk(KERN_ERR "%s: Invalid id (%d)\n", __func__, id + 1);
return -ENODEV;
}
mcbsp = id_to_mcbsp_ptr(id);
st_data = mcbsp->st_data;
if (!st_data)
return -ENODEV;
spin_lock_irq(&mcbsp->lock);
st_data->enabled = 1;
omap_st_start(mcbsp);
spin_unlock_irq(&mcbsp->lock);
return 0;
}
EXPORT_SYMBOL(omap_st_enable);
static int omap_st_stop(struct omap_mcbsp *mcbsp)
{
struct omap_mcbsp_st_data *st_data = mcbsp->st_data;
if (st_data && st_data->running) {
if (!mcbsp->free) {
omap_st_off(mcbsp);
st_data->running = 0;
}
}
return 0;
}
int omap_st_disable(unsigned int id)
{
struct omap_mcbsp *mcbsp;
struct omap_mcbsp_st_data *st_data;
int ret = 0;
if (!omap_mcbsp_check_valid_id(id)) {
printk(KERN_ERR "%s: Invalid id (%d)\n", __func__, id + 1);
return -ENODEV;
}
mcbsp = id_to_mcbsp_ptr(id);
st_data = mcbsp->st_data;
if (!st_data)
return -ENODEV;
spin_lock_irq(&mcbsp->lock);
omap_st_stop(mcbsp);
st_data->enabled = 0;
spin_unlock_irq(&mcbsp->lock);
return ret;
}
EXPORT_SYMBOL(omap_st_disable);
int omap_st_is_enabled(unsigned int id)
{
struct omap_mcbsp *mcbsp;
struct omap_mcbsp_st_data *st_data;
if (!omap_mcbsp_check_valid_id(id)) {
printk(KERN_ERR "%s: Invalid id (%d)\n", __func__, id + 1);
return -ENODEV;
}
mcbsp = id_to_mcbsp_ptr(id);
st_data = mcbsp->st_data;
if (!st_data)
return -ENODEV;
return st_data->enabled;
}
EXPORT_SYMBOL(omap_st_is_enabled);
/*
* omap_mcbsp_set_tx_threshold configures how to deal
* with transmit threshold. the threshold value and handler can be
@ -363,6 +633,8 @@ static inline void omap34xx_mcbsp_free(struct omap_mcbsp *mcbsp)
#else
static inline void omap34xx_mcbsp_request(struct omap_mcbsp *mcbsp) {}
static inline void omap34xx_mcbsp_free(struct omap_mcbsp *mcbsp) {}
static inline void omap_st_start(struct omap_mcbsp *mcbsp) {}
static inline void omap_st_stop(struct omap_mcbsp *mcbsp) {}
#endif
/*
@ -546,6 +818,9 @@ void omap_mcbsp_start(unsigned int id, int tx, int rx)
}
mcbsp = id_to_mcbsp_ptr(id);
if (cpu_is_omap34xx())
omap_st_start(mcbsp);
mcbsp->rx_word_length = (MCBSP_READ_CACHE(mcbsp, RCR1) >> 5) & 0x7;
mcbsp->tx_word_length = (MCBSP_READ_CACHE(mcbsp, XCR1) >> 5) & 0x7;
@ -637,6 +912,9 @@ void omap_mcbsp_stop(unsigned int id, int tx, int rx)
w = MCBSP_READ_CACHE(mcbsp, SPCR2);
MCBSP_WRITE(mcbsp, SPCR2, w & ~(1 << 6));
}
if (cpu_is_omap34xx())
omap_st_stop(mcbsp);
}
EXPORT_SYMBOL(omap_mcbsp_stop);
@ -1212,6 +1490,64 @@ unlock:
static DEVICE_ATTR(dma_op_mode, 0644, dma_op_mode_show, dma_op_mode_store);
static ssize_t st_taps_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct omap_mcbsp *mcbsp = dev_get_drvdata(dev);
struct omap_mcbsp_st_data *st_data = mcbsp->st_data;
ssize_t status = 0;
int i;
spin_lock_irq(&mcbsp->lock);
for (i = 0; i < st_data->nr_taps; i++)
status += sprintf(&buf[status], (i ? ", %d" : "%d"),
st_data->taps[i]);
if (i)
status += sprintf(&buf[status], "\n");
spin_unlock_irq(&mcbsp->lock);
return status;
}
static ssize_t st_taps_store(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t size)
{
struct omap_mcbsp *mcbsp = dev_get_drvdata(dev);
struct omap_mcbsp_st_data *st_data = mcbsp->st_data;
int val, tmp, status, i = 0;
spin_lock_irq(&mcbsp->lock);
memset(st_data->taps, 0, sizeof(st_data->taps));
st_data->nr_taps = 0;
do {
status = sscanf(buf, "%d%n", &val, &tmp);
if (status < 0 || status == 0) {
size = -EINVAL;
goto out;
}
if (val < -32768 || val > 32767) {
size = -EINVAL;
goto out;
}
st_data->taps[i++] = val;
buf += tmp;
if (*buf != ',')
break;
buf++;
} while (1);
st_data->nr_taps = i;
out:
spin_unlock_irq(&mcbsp->lock);
return size;
}
static DEVICE_ATTR(st_taps, 0644, st_taps_show, st_taps_store);
static const struct attribute *additional_attrs[] = {
&dev_attr_max_tx_thres.attr,
&dev_attr_max_rx_thres.attr,
@ -1233,6 +1569,60 @@ static inline void __devexit omap_additional_remove(struct device *dev)
sysfs_remove_group(&dev->kobj, &additional_attr_group);
}
static const struct attribute *sidetone_attrs[] = {
&dev_attr_st_taps.attr,
NULL,
};
static const struct attribute_group sidetone_attr_group = {
.attrs = (struct attribute **)sidetone_attrs,
};
int __devinit omap_st_add(struct omap_mcbsp *mcbsp)
{
struct omap_mcbsp_platform_data *pdata = mcbsp->pdata;
struct omap_mcbsp_st_data *st_data;
int err;
st_data = kzalloc(sizeof(*mcbsp->st_data), GFP_KERNEL);
if (!st_data) {
err = -ENOMEM;
goto err1;
}
st_data->io_base_st = ioremap(pdata->phys_base_st, SZ_4K);
if (!st_data->io_base_st) {
err = -ENOMEM;
goto err2;
}
err = sysfs_create_group(&mcbsp->dev->kobj, &sidetone_attr_group);
if (err)
goto err3;
mcbsp->st_data = st_data;
return 0;
err3:
iounmap(st_data->io_base_st);
err2:
kfree(st_data);
err1:
return err;
}
static void __devexit omap_st_remove(struct omap_mcbsp *mcbsp)
{
struct omap_mcbsp_st_data *st_data = mcbsp->st_data;
if (st_data) {
sysfs_remove_group(&mcbsp->dev->kobj, &sidetone_attr_group);
iounmap(st_data->io_base_st);
kfree(st_data);
}
}
static inline void __devinit omap34xx_device_init(struct omap_mcbsp *mcbsp)
{
mcbsp->dma_op_mode = MCBSP_DMA_MODE_ELEMENT;
@ -1246,6 +1636,12 @@ static inline void __devinit omap34xx_device_init(struct omap_mcbsp *mcbsp)
if (omap_additional_add(mcbsp->dev))
dev_warn(mcbsp->dev,
"Unable to create additional controls\n");
if (mcbsp->id == 2 || mcbsp->id == 3)
if (omap_st_add(mcbsp))
dev_warn(mcbsp->dev,
"Unable to create sidetone controls\n");
} else {
mcbsp->max_tx_thres = -EINVAL;
mcbsp->max_rx_thres = -EINVAL;
@ -1254,8 +1650,12 @@ static inline void __devinit omap34xx_device_init(struct omap_mcbsp *mcbsp)
static inline void __devexit omap34xx_device_exit(struct omap_mcbsp *mcbsp)
{
if (cpu_is_omap34xx())
if (cpu_is_omap34xx()) {
omap_additional_remove(mcbsp->dev);
if (mcbsp->id == 2 || mcbsp->id == 3)
omap_st_remove(mcbsp);
}
}
#else
static inline void __devinit omap34xx_device_init(struct omap_mcbsp *mcbsp) {}