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spi is shared between the rtc and tsc2100

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adds the very begining of the rtc driver (only reads the time currently


git-svn-id: svn://svn.rockbox.org/rockbox/trunk@14935 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Jonathan Gordon 2007-10-01 05:27:43 +00:00
parent ea47ee64f0
commit 03f45d3aff
8 changed files with 95 additions and 19 deletions
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2
firmware/SOURCES
View file

@ -146,6 +146,8 @@ drivers/rtc/rtc_ds1339_ds3231.c
drivers/rtc/rtc_s3c2440.c
#elif (CONFIG_RTC == RTC_AS3514)
drivers/rtc/rtc_as3514.c
#elif (CONFIG_RTC == RTC_RX5X348AB)
drivers/rtc/rtc_rx5x348ab.c
#endif /* (CONFIG_RTC == RTC_) */
#endif /* SIMULATOR */

35
firmware/drivers/rtc/rtc_rx5x348ab.c Normal file
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@ -0,0 +1,35 @@
/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id: rtc_as3514.c 12131 2007-01-27 20:48:48Z dan_a $
*
* Copyright (C) 2007 by Jonathan Gordon
*
* All files in this archive are subject to the GNU General Public License.
* See the file COPYING in the source tree root for full license agreement.
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
****************************************************************************/
#include "config.h"
#include "spi.h"
#include "rtc.h"
#include <stdbool.h>
void rtc_init(void)
{
}
int rtc_read_datetime(unsigned char* buf)
{
char command = 0x04; /* burst read from the start of the time/date reg */
spi_block_transfer(SPI_target_RX5X348AB,
&command, 1, buf, 7);
return 1;
}

9
firmware/drivers/tsc2100.c
View file

@ -30,7 +30,8 @@ void tsc2100_read_values(short *x, short* y, short *z1, short *z2)
unsigned short command = 0x8000|(page << 11)|(address << 5);
unsigned char out[] = {command >> 8, command & 0xff};
unsigned char in[8];
spi_block_transfer(out, sizeof(out), in, sizeof(in));
spi_block_transfer(SPI_target_TSC2100,
out, sizeof(out), in, sizeof(in));
*x = (in[0]<<8)|in[1];
*y = (in[2]<<8)|in[3];
@ -43,7 +44,8 @@ short tsc2100_readreg(int page, int address)
unsigned short command = 0x8000|(page << 11)|(address << 5);
unsigned char out[] = {command >> 8, command & 0xff};
unsigned char in[2];
spi_block_transfer(out, sizeof(out), in, sizeof(in));
spi_block_transfer(SPI_target_TSC2100,
out, sizeof(out), in, sizeof(in));
return (in[0]<<8)|in[1];
}
@ -53,7 +55,8 @@ void tsc2100_writereg(int page, int address, short value)
unsigned short command = 0x8000|(page << 11)|(address << 5);
unsigned char out[4] = {command >> 8, command & 0xff,
value >> 8, value & 0xff};
spi_block_transfer(out, sizeof(out), NULL, 0);
spi_block_transfer(SPI_target_TSC2100,
out, sizeof(out), NULL, 0);
}
void tsc2100_keyclick(void)

2
firmware/export/config-mrobe500.h
View file

@ -62,7 +62,7 @@
#define CONFIG_CODEC SWCODEC
/* define this if you have a real-time clock */
//#define CONFIG_RTC RTC_S3C2440
#define CONFIG_RTC RTC_RX5X348AB
/* Define this for LCD backlight available */
#define HAVE_BACKLIGHT

1
firmware/export/config.h
View file

@ -140,6 +140,7 @@
#define RTC_AS3514 6 /* Sandisk Sansa e200 series */
#define RTC_DS1339_DS3231 7 /* h1x0 RTC mod */
#define RTC_IMX31L 8
#define RTC_RX5X348AB 9
/* USB On-the-go */
#define USBOTG_ISP1362 1362 /* iriver H300 */

5
firmware/export/spi.h
View file

@ -18,9 +18,6 @@
****************************************************************************/
#ifndef __SPI_H__
#define __SPI_H__
int spi_block_transfer(const uint8_t *tx_bytes, unsigned int tx_size,
uint8_t *rx_bytes, unsigned int rx_size);
void spi_init(void);
#include "spi-target.h"
#endif

50
firmware/target/arm/tms320dm320/spi-dm320.c
View file

@ -24,18 +24,43 @@
* with this program; if not, write to the Free Software Foundation, Inc.,
* 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include "kernel.h"
#include "system.h"
#include "spi.h"
#define GIO_TS_ENABLE (1<<2)
#define clr_gio_enable() IO_GIO_BITSET1=GIO_TS_ENABLE
#define set_gio_enable() IO_GIO_BITCLR1=GIO_TS_ENABLE
#define GIO_TS_ENABLE (1<<2)
#define GIO_RTC_ENABLE (1<<12)
int spi_block_transfer(const uint8_t *tx_bytes, unsigned int tx_size,
struct mutex spi_lock;
struct SPI_info {
volatile unsigned short *setreg;
volatile unsigned short *clrreg;
int bit;
};
#define reg(a) (PHY_IO_BASE+a)
struct SPI_info spi_targets[] =
{
[SPI_target_TSC2100] = { reg(0x0594), reg(0x058E), GIO_TS_ENABLE },
[SPI_target_RX5X348AB] = { reg(0x058C), reg(0x0592), GIO_RTC_ENABLE },
};
static void spi_disable_all_targets(void)
{
int i;
for(i=0;i<SPI_MAX_TARGETS;i++)
{
*spi_targets[i].clrreg = spi_targets[i].bit;
}
}
int spi_block_transfer(enum SPI_target target,
const uint8_t *tx_bytes, unsigned int tx_size,
uint8_t *rx_bytes, unsigned int rx_size)
{
spinlock_lock(&spi_lock);
/* Activate the slave select pin */
set_gio_enable();
*spi_targets[target].setreg = spi_targets[target].bit;
while (tx_size--)
{
@ -58,13 +83,15 @@ int spi_block_transfer(const uint8_t *tx_bytes, unsigned int tx_size,
*rx_bytes++ = data & 0xff;
}
clr_gio_enable();
*spi_targets[target].clrreg = spi_targets[target].bit;
spinlock_unlock(&spi_lock);
return 0;
}
void spi_init(void)
{
spinlock_init(&spi_lock);
/* Set SCLK idle level = 0 */
IO_SERIAL0_MODE |= (1<<10);
@ -72,6 +99,9 @@ void spi_init(void)
IO_SERIAL0_TX_ENABLE = 0x0001;
/* Set GIO 18 to output for touch screen slave enable */
IO_GIO_DIR1&=~GIO_TS_ENABLE;
clr_gio_enable();
IO_GIO_DIR1 &= ~GIO_TS_ENABLE;
/* Set GIO 12 to output for rtc slave enable */
IO_GIO_DIR0 &= ~GIO_RTC_ENABLE;
spi_disable_all_targets(); /* make sure only one is ever enabled at a time */
}

10
firmware/target/arm/tms320dm320/spi-target.h
View file

@ -21,9 +21,17 @@
#define SPI_TARGET_H
#include <inttypes.h>
#include <stdbool.h>
enum SPI_target {
SPI_target_TSC2100 = 0,
SPI_target_RX5X348AB,
SPI_MAX_TARGETS,
};
void spi_init(void);
int spi_block_transfer(const uint8_t *tx_bytes, unsigned int tx_size,
int spi_block_transfer(enum SPI_target target,
const uint8_t *tx_bytes, unsigned int tx_size,
uint8_t *rx_bytes, unsigned int rx_size);
#endif