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bsps/beagle: register i2c device at initialization

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This commit is contained in:
Vijay Kumar Banerjee
2019-09-19 21:27:16 +02:00
committed by Christian Mauderer
parent c1a1f2c8da
commit a4e96cfb0a
3 changed files with 24 additions and 13 deletions
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bsps/arm/beagle/i2c/bbb-i2c.c
+3 -3
View File
@@ -186,16 +186,16 @@ static int am335x_i2c_reset( bbb_i2c_bus *bus )
bus->con_reg = 0;
regs->BBB_I2C_CON = bus->con_reg;
udelay( 50000 );
rtems_counter_delay_nanoseconds(50000000);
regs->BBB_I2C_SYSC = AM335X_I2C_SYSC_SRST;
udelay( 1000 );
rtems_counter_delay_nanoseconds(1000000);
regs->BBB_I2C_CON = AM335X_I2C_CON_I2C_EN;
while ( !( regs->BBB_I2C_SYSS & AM335X_I2C_SYSS_RDONE )
&& timeout >= 0 ) {
--timeout;
udelay( 100 );
rtems_counter_delay_nanoseconds(100000);
}
if ( timeout <= 0 ) {
bsps/arm/beagle/include/bsp/i2c.h
-10
View File
@@ -94,16 +94,6 @@ int am335x_i2c_bus_register(
rtems_vector_number irq
);
static inline int bbb_register_i2c_0( void )
{
return am335x_i2c_bus_register(
BBB_I2C_0_BUS_PATH,
AM335X_I2C0_BASE,
I2C_BUS_CLOCK_DEFAULT,
BBB_I2C0_IRQ
);
}
static inline int bbb_register_i2c_1( void )
{
return am335x_i2c_bus_register(
bsps/arm/beagle/start/bspstart.c
+21
View File
@@ -17,6 +17,8 @@
#include <bsp/irq-generic.h>
#include <bsp/fdt.h>
#include <bsp/linker-symbols.h>
#include <bsp/i2c.h>
#include <rtems/sysinit.h>
#include "bspdebug.h"
@@ -41,3 +43,22 @@ uint32_t bsp_fdt_map_intr(const uint32_t *intr, size_t icells)
{
return intr[0];
}
static void bbb_i2c_0_initialize(void)
{
int err;
err = am335x_i2c_bus_register(BBB_I2C_0_BUS_PATH,
AM335X_I2C0_BASE,
I2C_BUS_CLOCK_DEFAULT,
BBB_I2C0_IRQ);
if (err != 0) {
printk("rtems i2c-0: Device could not be registered (%d)", err);
}
}
RTEMS_SYSINIT_ITEM(
bbb_i2c_0_initialize,
RTEMS_SYSINIT_LAST,
RTEMS_SYSINIT_ORDER_LAST
);