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/**************************************************************
spi_dev.c
adapt device api and spi api
This is MASTER side.
***************************************************************/
/**************************************************************
Preprocessor by common
***************************************************************/
#include "spi_main.h"
#include "spi_dev.h"
#include "spi_os.h"
/**************************************************************
Preprocessor by platform
(OMAP4430 && MSM7X30)
***************************************************************/
#include <linux/spi/spi.h>
#include <linux/interrupt.h>
#include <linux/gpio.h>
#include <linux/phone_svn/ipc_spi.h>
/**************************************************************
Definition of Variables and Functions by common
***************************************************************/
int spi_dev_gpio_mrdy;
int spi_dev_gpio_srdy;
int spi_dev_gpio_submrdy;
int spi_dev_gpio_subsrdy;
/**************************************************************
Preprocessor by platform
(OMAP4430 && MSM7X30)
***************************************************************/
int spi_is_restart;
/**********************************************************
Prototype void spi_dev_init ( void * data)
Type function
Description init spi gpio info
Param input (none)
Return value (none)
***********************************************************/
void spi_dev_init(void *data)
{
struct ipc_spi_platform_data *pdata = NULL;
SPI_OS_TRACE(("[SPI] spi_dev_init\n"));
pdata = (struct ipc_spi_platform_data *)data;
spi_dev_gpio_mrdy = (int) pdata->gpio_ipc_mrdy;
spi_dev_gpio_srdy = (int) pdata->gpio_ipc_srdy;
spi_dev_gpio_submrdy = (int) pdata->gpio_ipc_sub_mrdy;
spi_dev_gpio_subsrdy = (int) pdata->gpio_ipc_sub_srdy;
spi_dev_set_gpio(spi_dev_gpio_mrdy, SPI_DEV_GPIOLEVEL_LOW);
if (spi_is_restart == 0)
spi_dev_set_gpio(spi_dev_gpio_submrdy, SPI_DEV_GPIOLEVEL_LOW);
}
/**********************************************************
Prototype void spi_dev_destroy( void )
Type function
Description unregister irq handler
Param input (none)
Return value (none)
***********************************************************/
void spi_dev_destroy(void)
{
spi_dev_unreigster_irq_handler(spi_dev_gpio_srdy, 0);
spi_dev_unreigster_irq_handler(spi_dev_gpio_subsrdy, 0);
}
/**********************************************************
Prototype int spi_dev_send
Type function
Description starting data send by DMA(CP side)
starting send clock for data switching(AP side)
Param input buf : data for send
length : data size. this lengt must be fixed
Return value 0 : success
(others) : error cause
***********************************************************/
int spi_dev_send(void *buf, unsigned int length)
{
int result = 0;
result = ipc_spi_tx_rx_sync(buf, 0, length);
return result;
}
/**********************************************************
Prototype int spi_dev_receive
Type function
Description starting data receive by DMA(CP side)
starting send clock for data switching(AP side)
Param input buf : buffer for saving data
length : data size. this lengt must be fixed
Return value 0 : success
(others) : error cause
***********************************************************/
int spi_dev_receive(void *buf, unsigned int length)
{
int value = 0;
value = ipc_spi_tx_rx_sync(0, buf, length);
return value;
}
/**********************************************************
Prototype void spi_dev_set_gpio
Type function
Description set gpio pin state
Param input gpio_id : number of gpio id
value : SPI_DEV_GPIOLEVEL_HIGH for raising pin state up
: SPI_DEV_GPIOLEVEL_LOW for getting pin state down
Return value (none)
***********************************************************/
void spi_dev_set_gpio(int gpio_id, enum SPI_DEV_GPIOLEVEL_T value)
{
int level = 0;
SPI_OS_TRACE_MID(("%s gpio_id =[%d], value =[%d]\n",
"[SPI] spi_dev_set_gpio :", gpio_id, (int) value));
switch (value) {
case SPI_DEV_GPIOLEVEL_LOW:
level = 0;
break;
case SPI_DEV_GPIOLEVEL_HIGH:
level = 1;
break;
}
gpio_set_value((unsigned int) gpio_id, level);
}
/**********************************************************
Prototype SPI_DEV_GPIOLEVEL_T spi_dev_get_gpio(int gpio_id)
Type function
Description get gpio pin state
Param input gpio_id : number of gpio id
Return value SPI_DEV_GPIOLEVEL
***********************************************************/
enum SPI_DEV_GPIOLEVEL_T spi_dev_get_gpio(int gpio_id)
{
enum SPI_DEV_GPIOLEVEL_T value = SPI_DEV_GPIOLEVEL_LOW;
int level = 0;
level = gpio_get_value((unsigned int) gpio_id);
switch (level) {
case 0:
value = SPI_DEV_GPIOLEVEL_LOW;
break;
case 1:
value = SPI_DEV_GPIOLEVEL_HIGH;
break;
}
return value;
}
/**********************************************************
Prototype int spi_dev_reigster_irq_handler
Type function
Description regist irq callback function to each gpio interrupt
Param input gpio_id : gpio pin id
tigger : interrupt detection mode
handler : interrupt handler function
name : register name
Return value 0 : fail
1 : success
***********************************************************/
int spi_dev_reigster_irq_handler(int gpio_id,
enum SPI_DEV_IRQ_TRIGGER_T trigger,
SPI_DEV_IRQ_HANDLER_T handler,
char *name, void *data)
{
#if defined(SPI_FEATURE_OMAP4430)
int value = 0;
int _trigger = IRQF_TRIGGER_NONE;
switch (trigger) {
case SPI_DEV_IRQ_TRIGGER_RISING:
_trigger = IRQF_TRIGGER_RISING;
break;
case SPI_DEV_IRQ_TRIGGER_FALLING:
_trigger = IRQF_TRIGGER_FALLING;
break;
default:
_trigger = IRQF_TRIGGER_NONE;
break;
}
value = request_irq(OMAP_GPIO_IRQ(gpio_id), handler,
_trigger, name, data);
if (value != 0) {
SPI_OS_ERROR(("%s regist fail(%d)",
"[SPI] ERROR : spi_dev_reigster_irq_handler :",
value));
return 0;
}
#elif defined(SPI_FEATURE_S5PC210)
int value = 0;
int _trigger = IRQF_TRIGGER_NONE;
int irq = 0;
switch (trigger) {
case SPI_DEV_IRQ_TRIGGER_RISING:
_trigger = IRQF_TRIGGER_RISING;
break;
case SPI_DEV_IRQ_TRIGGER_FALLING:
_trigger = IRQF_TRIGGER_FALLING;
break;
default:
_trigger = IRQF_TRIGGER_NONE;
break;
}
irq = gpio_to_irq(gpio_id);
value = request_irq(irq, handler, _trigger, name, data);
if (value != 0) {
SPI_OS_ERROR(("spi_dev_reigster_irq_handler: regist fail(%d)",
value));
return 0;
}
enable_irq_wake(irq);
#endif
return 1;
}
/**********************************************************
void spi_dev_unreigster_irq_handler (int gpio_id, void * data)
Type function
Description unregister irq hanger by gpio api
Param input gpio_id : gpio pin id
data : param
Return value (none)
***********************************************************/
void spi_dev_unreigster_irq_handler(int gpio_id, void *data)
{
#if defined(SPI_FEATURE_OMAP4430)
free_irq(OMAP_GPIO_IRQ(gpio_id), data);
#elif defined(SPI_FEATURE_S5PC210)
free_irq(gpio_to_irq(gpio_id), data);
#endif
}
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