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Add handler for audio irq.

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git-svn-id: svn://svn.rockbox.org/rockbox/trunk@25299 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Tobias Diedrich 2010-03-23 05:02:37 +00:00
parent 6550349835
commit 47ab95904e
9 changed files with 208 additions and 25 deletions
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108
firmware/target/arm/as3525/ascodec-as3525.c
View file

@ -50,6 +50,7 @@
#include "system.h"
#include "as3525.h"
#include "i2c.h"
#include "usb-target.h"
#define I2C2_DATA *((volatile unsigned int *)(I2C_AUDIO_BASE + 0x00))
#define I2C2_SLAD0 *((volatile unsigned int *)(I2C_AUDIO_BASE + 0x04))
@ -81,15 +82,47 @@
#define REQ_FINISHED 1
#define REQ_RETRY 2
#ifdef DEBUG
#define IFDEBUG(x) x
#else
#define IFDEBUG(x)
#endif
static struct mutex as_mtx;
static int ascodec_enrd0_shadow = 0;
static unsigned char *req_data_ptr = NULL;
static struct ascodec_request *req_head = NULL;
static struct ascodec_request *req_tail = NULL;
static struct wakeup adc_wkup;
#ifdef DEBUG
static int int_audio_ctr = 0;
static int int_chg_finished = 0;
static int int_chg_insert = 0;
static int int_chg_remove = 0;
static int int_usb_insert = 0;
static int int_usb_remove = 0;
static int int_rtc = 0;
static int int_adc = 0;
#endif
static struct ascodec_request as_audio_req;
static void ascodec_start_req(struct ascodec_request *req);
static int ascodec_continue_req(struct ascodec_request *req, int irq_status);
static void ascodec_finish_req(struct ascodec_request *req);
static void ascodec_read_cb(unsigned const char *data, unsigned int len);
void INT_AUDIO(void)
{
VIC_INT_EN_CLEAR = INTERRUPT_AUDIO;
IFDEBUG(int_audio_ctr++);
ascodec_async_read(AS3514_IRQ_ENRD0, 3, &as_audio_req, ascodec_read_cb);
}
void INT_I2C_AUDIO(void)
{
@ -129,6 +162,7 @@ void ascodec_init(void)
int prescaler;
mutex_init(&as_mtx);
wakeup_init(&adc_wkup);
/* enable clock */
CGU_PERI |= CGU_I2C_AUDIO_MASTER_CLOCK_ENABLE;
@ -145,9 +179,14 @@ void ascodec_init(void)
I2C2_IMR = 0x00; /* disable interrupts */
I2C2_INT_CLR |= I2C2_RIS; /* clear interrupt status */
VIC_INT_ENABLE = INTERRUPT_I2C_AUDIO;
}
VIC_INT_ENABLE = INTERRUPT_I2C_AUDIO | INTERRUPT_AUDIO;
/* Generate irq for usb+charge status change */
ascodec_write(AS3514_IRQ_ENRD0, /*IRQ_CHGSTAT |*/ IRQ_USBSTAT);
/* Generate irq for push-pull, active high, irq on rtc+adc change */
ascodec_write(AS3514_IRQ_ENRD2, IRQ_PUSHPULL | IRQ_HIGHACTIVE |
/*IRQ_RTC |*/ IRQ_ADC);
}
/* returns != 0 when busy */
static int i2c_busy(void)
@ -297,9 +336,18 @@ static void ascodec_wait(struct ascodec_request *req)
void ascodec_async_write(unsigned int index, unsigned int value,
struct ascodec_request *req)
{
if (index == AS3514_CVDD_DCDC3) {
switch(index) {
case AS3514_CVDD_DCDC3:
/* prevent setting of the LREG_CP_not bit */
value &= ~(1 << 5);
break;
case AS3514_IRQ_ENRD0:
/* save value in register shadow
* for ascodec_(en|dis)able_endofch_irq() */
ascodec_enrd0_shadow = value;
break;
default:
break;
}
ascodec_req_init(req, ASCODEC_REQ_WRITE, index, 1);
@ -375,6 +423,60 @@ int ascodec_readbytes(unsigned int index, unsigned int len, unsigned char *data)
return i;
}
static void ascodec_read_cb(unsigned const char *data, unsigned int len)
{
if (len != 3) /* some error happened? */
return;
if (data[0] & CHG_ENDOFCH) { /* chg finished */
IFDEBUG(int_chg_finished++);
}
if (data[0] & CHG_CHANGED) { /* chg status changed */
if (data[0] & CHG_STATUS) {
IFDEBUG(int_chg_insert++);
} else {
IFDEBUG(int_chg_remove++);
}
}
if (data[0] & USB_CHANGED) { /* usb status changed */
if (data[0] & USB_STATUS) {
IFDEBUG(int_usb_insert++);
usb_insert_int();
} else {
IFDEBUG(int_usb_remove++);
usb_remove_int();
}
}
if (data[2] & IRQ_RTC) { /* rtc irq */
/*
* Can be configured for once per second or once per minute,
* default is once per second
*/
IFDEBUG(int_rtc++);
}
if (data[2] & IRQ_ADC) { /* adc finished */
IFDEBUG(int_adc++);
wakeup_signal(&adc_wkup);
}
VIC_INT_ENABLE = INTERRUPT_AUDIO;
}
void ascodec_wait_adc_finished(void)
{
wakeup_wait(&adc_wkup, TIMEOUT_BLOCK);
}
void ascodec_enable_endofch_irq(void)
{
ascodec_write(AS3514_IRQ_ENRD0, ascodec_enrd0_shadow | CHG_ENDOFCH);
}
void ascodec_disable_endofch_irq(void)
{
ascodec_write(AS3514_IRQ_ENRD0, ascodec_enrd0_shadow & ~CHG_ENDOFCH);
}
/*
* NOTE:
* After the conversion to interrupts, ascodec_(lock|unlock) are only used by