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-rw-r--r--cpu/arm920t/Makefile6
-rw-r--r--cpu/arm920t/imx/Makefile42
-rw-r--r--cpu/arm920t/imx/generic.c (renamed from cpu/arm920t/imx_generic.c)0
-rw-r--r--cpu/arm920t/imx/interrupts.c (renamed from cpu/arm920t/imx_interrupts.c)0
-rw-r--r--cpu/arm920t/imx/serial.c201
-rw-r--r--cpu/arm920t/imx/speed.c (renamed from cpu/arm920t/imx_speed.c)0
-rw-r--r--cpu/arm920t/s3c24x0/Makefile43
-rw-r--r--cpu/arm920t/s3c24x0/i2c.c447
-rw-r--r--cpu/arm920t/s3c24x0/interrupts.c (renamed from cpu/arm920t/s3c24x0_interrupts.c)0
-rw-r--r--cpu/arm920t/s3c24x0/serial.c (renamed from cpu/arm920t/s3c24x0_serial.c)0
-rw-r--r--cpu/arm920t/s3c24x0/speed.c (renamed from cpu/arm920t/s3c24x0_speed.c)0
-rw-r--r--cpu/arm920t/s3c24x0/usb_ohci.c (renamed from cpu/arm920t/usb_ohci.c)0
-rw-r--r--cpu/arm920t/s3c24x0/usb_ohci.h (renamed from cpu/arm920t/usb_ohci.h)0
13 files changed, 734 insertions, 5 deletions
diff --git a/cpu/arm920t/Makefile b/cpu/arm920t/Makefile
index 68a33d6..8f256e9 100644
--- a/cpu/arm920t/Makefile
+++ b/cpu/arm920t/Makefile
@@ -26,11 +26,7 @@ include $(TOPDIR)/config.mk
LIB = lib$(CPU).a
START = start.o
-OBJS = cpu.o \
- imx_generic.o imx_interrupts.o imx_speed.o \
- interrupts.o \
- s3c24x0_interrupts.o s3c24x0_serial.o s3c24x0_speed.o \
- usb_ohci.o
+OBJS = cpu.o interrupts.o
all: .depend $(START) $(LIB)
diff --git a/cpu/arm920t/imx/Makefile b/cpu/arm920t/imx/Makefile
new file mode 100644
index 0000000..8865f82
--- /dev/null
+++ b/cpu/arm920t/imx/Makefile
@@ -0,0 +1,42 @@
+#
+# (C) Copyright 2000, 2001, 2002
+# Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+#
+# See file CREDITS for list of people who contributed to this
+# project.
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation; either version 2 of
+# the License, or (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+# MA 02111-1307 USA
+#
+
+include $(TOPDIR)/config.mk
+
+LIB = lib$(SOC).a
+
+OBJS = generic.o interrupts.o serial.o speed.o
+
+all: .depend $(LIB)
+
+$(LIB): $(OBJS)
+ $(AR) crv $@ $(OBJS)
+
+#########################################################################
+
+.depend: Makefile $(OBJS:.o=.c)
+ $(CC) -M $(CFLAGS) $(OBJS:.o=.c) > $@
+
+sinclude .depend
+
+#########################################################################
diff --git a/cpu/arm920t/imx_generic.c b/cpu/arm920t/imx/generic.c
index aa7c8c1..aa7c8c1 100644
--- a/cpu/arm920t/imx_generic.c
+++ b/cpu/arm920t/imx/generic.c
diff --git a/cpu/arm920t/imx_interrupts.c b/cpu/arm920t/imx/interrupts.c
index 12ae2fa..12ae2fa 100644
--- a/cpu/arm920t/imx_interrupts.c
+++ b/cpu/arm920t/imx/interrupts.c
diff --git a/cpu/arm920t/imx/serial.c b/cpu/arm920t/imx/serial.c
new file mode 100644
index 0000000..9dbaa56
--- /dev/null
+++ b/cpu/arm920t/imx/serial.c
@@ -0,0 +1,201 @@
+/*
+ * (c) 2004 Sascha Hauer <sascha@saschahauer.de>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ */
+
+#include <common.h>
+#if defined (CONFIG_IMX)
+
+#include <asm/arch/imx-regs.h>
+
+#ifndef CONFIG_IMX_SERIAL_NONE
+
+#if defined CONFIG_IMX_SERIAL1
+#define UART_BASE IMX_UART1_BASE
+#elif defined CONFIG_IMX_SERIAL2
+#define UART_BASE IMX_UART2_BASE
+#else
+#error "define CONFIG_IMX_SERIAL1, CONFIG_IMX_SERIAL2 or CONFIG_IMX_SERIAL_NONE"
+#endif
+
+struct imx_serial {
+ volatile uint32_t urxd[16];
+ volatile uint32_t utxd[16];
+ volatile uint32_t ucr1;
+ volatile uint32_t ucr2;
+ volatile uint32_t ucr3;
+ volatile uint32_t ucr4;
+ volatile uint32_t ufcr;
+ volatile uint32_t usr1;
+ volatile uint32_t usr2;
+ volatile uint32_t uesc;
+ volatile uint32_t utim;
+ volatile uint32_t ubir;
+ volatile uint32_t ubmr;
+ volatile uint32_t ubrc;
+ volatile uint32_t bipr[4];
+ volatile uint32_t bmpr[4];
+ volatile uint32_t uts;
+};
+
+void serial_setbrg (void)
+{
+ serial_init();
+}
+
+extern void imx_gpio_mode(int gpio_mode);
+
+/*
+ * Initialise the serial port with the given baudrate. The settings
+ * are always 8 data bits, no parity, 1 stop bit, no start bits.
+ *
+ */
+int serial_init (void)
+{
+ volatile struct imx_serial* base = (struct imx_serial *)UART_BASE;
+#ifdef CONFIG_IMX_SERIAL1
+ imx_gpio_mode(PC11_PF_UART1_TXD);
+ imx_gpio_mode(PC12_PF_UART1_RXD);
+#else
+ imx_gpio_mode(PB30_PF_UART2_TXD);
+ imx_gpio_mode(PB31_PF_UART2_RXD);
+#endif
+
+ /* Disable UART */
+ base->ucr1 &= ~UCR1_UARTEN;
+
+ /* Set to default POR state */
+
+ base->ucr1 = 0x00000004;
+ base->ucr2 = 0x00000000;
+ base->ucr3 = 0x00000000;
+ base->ucr4 = 0x00008040;
+ base->uesc = 0x0000002B;
+ base->utim = 0x00000000;
+ base->ubir = 0x00000000;
+ base->ubmr = 0x00000000;
+ base->uts = 0x00000000;
+ /* Set clocks */
+ base->ucr4 |= UCR4_REF16;
+
+ /* Configure FIFOs */
+ base->ufcr = 0xa81;
+
+ /* Set the numerator value minus one of the BRM ratio */
+ base->ubir = (CONFIG_BAUDRATE / 100) - 1;
+
+ /* Set the denominator value minus one of the BRM ratio */
+ base->ubmr = 10000 - 1;
+
+ /* Set to 8N1 */
+ base->ucr2 &= ~UCR2_PREN;
+ base->ucr2 |= UCR2_WS;
+ base->ucr2 &= ~UCR2_STPB;
+
+ /* Ignore RTS */
+ base->ucr2 |= UCR2_IRTS;
+
+ /* Enable UART */
+ base->ucr1 |= UCR1_UARTEN | UCR1_UARTCLKEN;
+
+ /* Enable FIFOs */
+ base->ucr2 |= UCR2_SRST | UCR2_RXEN | UCR2_TXEN;
+
+ /* Clear status flags */
+ base->usr2 |= USR2_ADET |
+ USR2_DTRF |
+ USR2_IDLE |
+ USR2_IRINT |
+ USR2_WAKE |
+ USR2_RTSF |
+ USR2_BRCD |
+ USR2_ORE |
+ USR2_RDR;
+
+ /* Clear status flags */
+ base->usr1 |= USR1_PARITYERR |
+ USR1_RTSD |
+ USR1_ESCF |
+ USR1_FRAMERR |
+ USR1_AIRINT |
+ USR1_AWAKE;
+ return (0);
+}
+
+/*
+ * Read a single byte from the serial port. Returns 1 on success, 0
+ * otherwise. When the function is successful, the character read is
+ * written into its argument c.
+ */
+int serial_getc (void)
+{
+ volatile struct imx_serial* base = (struct imx_serial *)UART_BASE;
+ unsigned char ch;
+
+ while(base->uts & UTS_RXEMPTY);
+
+ ch = (char)base->urxd[0];
+
+ return ch;
+}
+
+#ifdef CONFIG_HWFLOW
+static int hwflow = 0; /* turned off by default */
+int hwflow_onoff(int on)
+{
+}
+#endif
+
+/*
+ * Output a single byte to the serial port.
+ */
+void serial_putc (const char c)
+{
+ volatile struct imx_serial* base = (struct imx_serial *)UART_BASE;
+
+ /* Wait for Tx FIFO not full */
+ while (base->uts & UTS_TXFULL);
+
+ base->utxd[0] = c;
+
+ /* If \n, also do \r */
+ if (c == '\n')
+ serial_putc ('\r');
+}
+
+/*
+ * Test whether a character is in the RX buffer
+ */
+int serial_tstc (void)
+{
+ volatile struct imx_serial* base = (struct imx_serial *)UART_BASE;
+
+ /* If receive fifo is empty, return false */
+ if (base->uts & UTS_RXEMPTY)
+ return 0;
+ return 1;
+}
+
+void
+serial_puts (const char *s)
+{
+ while (*s) {
+ serial_putc (*s++);
+ }
+}
+#endif /* CONFIG_IMX_SERIAL_NONE */
+#endif /* defined CONFIG_IMX */
diff --git a/cpu/arm920t/imx_speed.c b/cpu/arm920t/imx/speed.c
index 1e29698..1e29698 100644
--- a/cpu/arm920t/imx_speed.c
+++ b/cpu/arm920t/imx/speed.c
diff --git a/cpu/arm920t/s3c24x0/Makefile b/cpu/arm920t/s3c24x0/Makefile
new file mode 100644
index 0000000..af9e4ef
--- /dev/null
+++ b/cpu/arm920t/s3c24x0/Makefile
@@ -0,0 +1,43 @@
+#
+# (C) Copyright 2000, 2001, 2002
+# Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+#
+# See file CREDITS for list of people who contributed to this
+# project.
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation; either version 2 of
+# the License, or (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+# MA 02111-1307 USA
+#
+
+include $(TOPDIR)/config.mk
+
+LIB = lib$(SOC).a
+
+OBJS = i2c.o interrupts.o serial.o speed.o \
+ usb_ohci.o
+
+all: .depend $(LIB)
+
+$(LIB): $(OBJS)
+ $(AR) crv $@ $(OBJS)
+
+#########################################################################
+
+.depend: Makefile $(OBJS:.o=.c)
+ $(CC) -M $(CFLAGS) $(OBJS:.o=.c) > $@
+
+sinclude .depend
+
+#########################################################################
diff --git a/cpu/arm920t/s3c24x0/i2c.c b/cpu/arm920t/s3c24x0/i2c.c
new file mode 100644
index 0000000..ef56cd1
--- /dev/null
+++ b/cpu/arm920t/s3c24x0/i2c.c
@@ -0,0 +1,447 @@
+/*
+ * (C) Copyright 2002
+ * David Mueller, ELSOFT AG, d.mueller@elsoft.ch
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+/* This code should work for both the S3C2400 and the S3C2410
+ * as they seem to have the same I2C controller inside.
+ * The different address mapping is handled by the s3c24xx.h files below.
+ */
+
+#include <common.h>
+
+#ifdef CONFIG_DRIVER_S3C24X0_I2C
+
+#if defined(CONFIG_S3C2400)
+#include <s3c2400.h>
+#elif defined(CONFIG_S3C2410)
+#include <s3c2410.h>
+#endif
+#include <i2c.h>
+
+#ifdef CONFIG_HARD_I2C
+
+#define I2C_WRITE 0
+#define I2C_READ 1
+
+#define I2C_OK 0
+#define I2C_NOK 1
+#define I2C_NACK 2
+#define I2C_NOK_LA 3 /* Lost arbitration */
+#define I2C_NOK_TOUT 4 /* time out */
+
+#define I2CSTAT_BSY 0x20 /* Busy bit */
+#define I2CSTAT_NACK 0x01 /* Nack bit */
+#define I2CCON_IRPND 0x10 /* Interrupt pending bit */
+#define I2C_MODE_MT 0xC0 /* Master Transmit Mode */
+#define I2C_MODE_MR 0x80 /* Master Receive Mode */
+#define I2C_START_STOP 0x20 /* START / STOP */
+#define I2C_TXRX_ENA 0x10 /* I2C Tx/Rx enable */
+
+#define I2C_TIMEOUT 1 /* 1 second */
+
+
+static int GetI2CSDA(void)
+{
+ S3C24X0_GPIO * const gpio = S3C24X0_GetBase_GPIO();
+
+#ifdef CONFIG_S3C2410
+ return (gpio->GPEDAT & 0x8000) >> 15;
+#endif
+#ifdef CONFIG_S3C2400
+ return (gpio->PGDAT & 0x0020) >> 5;
+#endif
+}
+
+#if 0
+static void SetI2CSDA(int x)
+{
+ rGPEDAT = (rGPEDAT & ~0x8000) | (x&1) << 15;
+}
+#endif
+
+static void SetI2CSCL(int x)
+{
+ S3C24X0_GPIO * const gpio = S3C24X0_GetBase_GPIO();
+
+#ifdef CONFIG_S3C2410
+ gpio->GPEDAT = (gpio->GPEDAT & ~0x4000) | (x&1) << 14;
+#endif
+#ifdef CONFIG_S3C2400
+ gpio->PGDAT = (gpio->PGDAT & ~0x0040) | (x&1) << 6;
+#endif
+}
+
+
+static int WaitForXfer (void)
+{
+ S3C24X0_I2C *const i2c = S3C24X0_GetBase_I2C ();
+ int i, status;
+
+ i = I2C_TIMEOUT * 10000;
+ status = i2c->IICCON;
+ while ((i > 0) && !(status & I2CCON_IRPND)) {
+ udelay (100);
+ status = i2c->IICCON;
+ i--;
+ }
+
+ return (status & I2CCON_IRPND) ? I2C_OK : I2C_NOK_TOUT;
+}
+
+static int IsACK (void)
+{
+ S3C24X0_I2C *const i2c = S3C24X0_GetBase_I2C ();
+
+ return (!(i2c->IICSTAT & I2CSTAT_NACK));
+}
+
+static void ReadWriteByte (void)
+{
+ S3C24X0_I2C *const i2c = S3C24X0_GetBase_I2C ();
+
+ i2c->IICCON &= ~I2CCON_IRPND;
+}
+
+void i2c_init (int speed, int slaveadd)
+{
+ S3C24X0_I2C *const i2c = S3C24X0_GetBase_I2C ();
+ S3C24X0_GPIO *const gpio = S3C24X0_GetBase_GPIO ();
+ ulong freq, pres = 16, div;
+ int i, status;
+
+ /* wait for some time to give previous transfer a chance to finish */
+
+ i = I2C_TIMEOUT * 1000;
+ status = i2c->IICSTAT;
+ while ((i > 0) && (status & I2CSTAT_BSY)) {
+ udelay (1000);
+ status = i2c->IICSTAT;
+ i--;
+ }
+
+ if ((status & I2CSTAT_BSY) || GetI2CSDA () == 0) {
+#ifdef CONFIG_S3C2410
+ ulong old_gpecon = gpio->GPECON;
+#endif
+#ifdef CONFIG_S3C2400
+ ulong old_gpecon = gpio->PGCON;
+#endif
+ /* bus still busy probably by (most) previously interrupted transfer */
+
+#ifdef CONFIG_S3C2410
+ /* set I2CSDA and I2CSCL (GPE15, GPE14) to GPIO */
+ gpio->GPECON = (gpio->GPECON & ~0xF0000000) | 0x10000000;
+#endif
+#ifdef CONFIG_S3C2400
+ /* set I2CSDA and I2CSCL (PG5, PG6) to GPIO */
+ gpio->PGCON = (gpio->PGCON & ~0x00003c00) | 0x00000c00;
+#endif
+
+ /* toggle I2CSCL until bus idle */
+ SetI2CSCL (0);
+ udelay (1000);
+ i = 10;
+ while ((i > 0) && (GetI2CSDA () != 1)) {
+ SetI2CSCL (1);
+ udelay (1000);
+ SetI2CSCL (0);
+ udelay (1000);
+ i--;
+ }
+ SetI2CSCL (1);
+ udelay (1000);
+
+ /* restore pin functions */
+#ifdef CONFIG_S3C2410
+ gpio->GPECON = old_gpecon;
+#endif
+#ifdef CONFIG_S3C2400
+ gpio->PGCON = old_gpecon;
+#endif
+ }
+
+ /* calculate prescaler and divisor values */
+ freq = get_PCLK ();
+ if ((freq / pres / (16 + 1)) > speed)
+ /* set prescaler to 512 */
+ pres = 512;
+
+ div = 0;
+ while ((freq / pres / (div + 1)) > speed)
+ div++;
+
+ /* set prescaler, divisor according to freq, also set
+ * ACKGEN, IRQ */
+ i2c->IICCON = (div & 0x0F) | 0xA0 | ((pres == 512) ? 0x40 : 0);
+
+ /* init to SLAVE REVEIVE and set slaveaddr */
+ i2c->IICSTAT = 0;
+ i2c->IICADD = slaveadd;
+ /* program Master Transmit (and implicit STOP) */
+ i2c->IICSTAT = I2C_MODE_MT | I2C_TXRX_ENA;
+
+}
+
+/*
+ * cmd_type is 0 for write, 1 for read.
+ *
+ * addr_len can take any value from 0-255, it is only limited
+ * by the char, we could make it larger if needed. If it is
+ * 0 we skip the address write cycle.
+ */
+static
+int i2c_transfer (unsigned char cmd_type,
+ unsigned char chip,
+ unsigned char addr[],
+ unsigned char addr_len,
+ unsigned char data[], unsigned short data_len)
+{
+ S3C24X0_I2C *const i2c = S3C24X0_GetBase_I2C ();
+ int i, status, result;
+
+ if (data == 0 || data_len == 0) {
+ /*Don't support data transfer of no length or to address 0 */
+ printf ("i2c_transfer: bad call\n");
+ return I2C_NOK;
+ }
+
+ /* Check I2C bus idle */
+ i = I2C_TIMEOUT * 1000;
+ status = i2c->IICSTAT;
+ while ((i > 0) && (status & I2CSTAT_BSY)) {
+ udelay (1000);
+ status = i2c->IICSTAT;
+ i--;
+ }
+
+ if (status & I2CSTAT_BSY)
+ return I2C_NOK_TOUT;
+
+ i2c->IICCON |= 0x80;
+ result = I2C_OK;
+
+ switch (cmd_type) {
+ case I2C_WRITE:
+ if (addr && addr_len) {
+ i2c->IICDS = chip;
+ /* send START */
+ i2c->IICSTAT = I2C_MODE_MT | I2C_TXRX_ENA | I2C_START_STOP;
+ i = 0;
+ while ((i < addr_len) && (result == I2C_OK)) {
+ result = WaitForXfer ();
+ i2c->IICDS = addr[i];
+ ReadWriteByte ();
+ i++;
+ }
+ i = 0;
+ while ((i < data_len) && (result == I2C_OK)) {
+ result = WaitForXfer ();
+ i2c->IICDS = data[i];
+ ReadWriteByte ();
+ i++;
+ }
+ } else {
+ i2c->IICDS = chip;
+ /* send START */
+ i2c->IICSTAT = I2C_MODE_MT | I2C_TXRX_ENA | I2C_START_STOP;
+ i = 0;
+ while ((i < data_len) && (result = I2C_OK)) {
+ result = WaitForXfer ();
+ i2c->IICDS = data[i];
+ ReadWriteByte ();
+ i++;
+ }
+ }
+
+ if (result == I2C_OK)
+ result = WaitForXfer ();
+
+ /* send STOP */
+ i2c->IICSTAT = I2C_MODE_MR | I2C_TXRX_ENA;
+ ReadWriteByte ();
+ break;
+
+ case I2C_READ:
+ if (addr && addr_len) {
+ i2c->IICSTAT = I2C_MODE_MT | I2C_TXRX_ENA;
+ i2c->IICDS = chip;
+ /* send START */
+ i2c->IICSTAT |= I2C_START_STOP;
+ result = WaitForXfer ();
+ if (IsACK ()) {
+ i = 0;
+ while ((i < addr_len) && (result == I2C_OK)) {
+ i2c->IICDS = addr[i];
+ ReadWriteByte ();
+ result = WaitForXfer ();
+ i++;
+ }
+
+ i2c->IICDS = chip;
+ /* resend START */
+ i2c->IICSTAT = I2C_MODE_MR | I2C_TXRX_ENA |
+ I2C_START_STOP;
+ ReadWriteByte ();
+ result = WaitForXfer ();
+ i = 0;
+ while ((i < data_len) && (result == I2C_OK)) {
+ /* disable ACK for final READ */
+ if (i == data_len - 1)
+ i2c->IICCON &= ~0x80;
+ ReadWriteByte ();
+ result = WaitForXfer ();
+ data[i] = i2c->IICDS;
+ i++;
+ }
+ } else {
+ result = I2C_NACK;
+ }
+
+ } else {
+ i2c->IICSTAT = I2C_MODE_MR | I2C_TXRX_ENA;
+ i2c->IICDS = chip;
+ /* send START */
+ i2c->IICSTAT |= I2C_START_STOP;
+ result = WaitForXfer ();
+
+ if (IsACK ()) {
+ i = 0;
+ while ((i < data_len) && (result == I2C_OK)) {
+ /* disable ACK for final READ */
+ if (i == data_len - 1)
+ i2c->IICCON &= ~0x80;
+ ReadWriteByte ();
+ result = WaitForXfer ();
+ data[i] = i2c->IICDS;
+ i++;
+ }
+ } else {
+ result = I2C_NACK;
+ }
+ }
+
+ /* send STOP */
+ i2c->IICSTAT = I2C_MODE_MR | I2C_TXRX_ENA;
+ ReadWriteByte ();
+ break;
+
+ default:
+ printf ("i2c_transfer: bad call\n");
+ result = I2C_NOK;
+ break;
+ }
+
+ return (result);
+}
+
+int i2c_probe (uchar chip)
+{
+ uchar buf[1];
+
+ buf[0] = 0;
+
+ /*
+ * What is needed is to send the chip address and verify that the
+ * address was <ACK>ed (i.e. there was a chip at that address which
+ * drove the data line low).
+ */
+ return (i2c_transfer (I2C_READ, chip << 1, 0, 0, buf, 1) != I2C_OK);
+}
+
+int i2c_read (uchar chip, uint addr, int alen, uchar * buffer, int len)
+{
+ uchar xaddr[4];
+ int ret;
+
+ if (alen > 4) {
+ printf ("I2C read: addr len %d not supported\n", alen);
+ return 1;
+ }
+
+ if (alen > 0) {
+ xaddr[0] = (addr >> 24) & 0xFF;
+ xaddr[1] = (addr >> 16) & 0xFF;
+ xaddr[2] = (addr >> 8) & 0xFF;
+ xaddr[3] = addr & 0xFF;
+ }
+
+#ifdef CFG_I2C_EEPROM_ADDR_OVERFLOW
+ /*
+ * EEPROM chips that implement "address overflow" are ones
+ * like Catalyst 24WC04/08/16 which has 9/10/11 bits of
+ * address and the extra bits end up in the "chip address"
+ * bit slots. This makes a 24WC08 (1Kbyte) chip look like
+ * four 256 byte chips.
+ *
+ * Note that we consider the length of the address field to
+ * still be one byte because the extra address bits are
+ * hidden in the chip address.
+ */
+ if (alen > 0)
+ chip |= ((addr >> (alen * 8)) & CFG_I2C_EEPROM_ADDR_OVERFLOW);
+#endif
+ if ((ret =
+ i2c_transfer (I2C_READ, chip << 1, &xaddr[4 - alen], alen,
+ buffer, len)) != 0) {
+ printf ("I2c read: failed %d\n", ret);
+ return 1;
+ }
+ return 0;
+}
+
+int i2c_write (uchar chip, uint addr, int alen, uchar * buffer, int len)
+{
+ uchar xaddr[4];
+
+ if (alen > 4) {
+ printf ("I2C write: addr len %d not supported\n", alen);
+ return 1;
+ }
+
+ if (alen > 0) {
+ xaddr[0] = (addr >> 24) & 0xFF;
+ xaddr[1] = (addr >> 16) & 0xFF;
+ xaddr[2] = (addr >> 8) & 0xFF;
+ xaddr[3] = addr & 0xFF;
+ }
+#ifdef CFG_I2C_EEPROM_ADDR_OVERFLOW
+ /*
+ * EEPROM chips that implement "address overflow" are ones
+ * like Catalyst 24WC04/08/16 which has 9/10/11 bits of
+ * address and the extra bits end up in the "chip address"
+ * bit slots. This makes a 24WC08 (1Kbyte) chip look like
+ * four 256 byte chips.
+ *
+ * Note that we consider the length of the address field to
+ * still be one byte because the extra address bits are
+ * hidden in the chip address.
+ */
+ if (alen > 0)
+ chip |= ((addr >> (alen * 8)) & CFG_I2C_EEPROM_ADDR_OVERFLOW);
+#endif
+ return (i2c_transfer
+ (I2C_WRITE, chip << 1, &xaddr[4 - alen], alen, buffer,
+ len) != 0);
+}
+#endif /* CONFIG_HARD_I2C */
+
+#endif /* CONFIG_DRIVER_S3C24X0_I2C */
diff --git a/cpu/arm920t/s3c24x0_interrupts.c b/cpu/arm920t/s3c24x0/interrupts.c
index 92298b0..92298b0 100644
--- a/cpu/arm920t/s3c24x0_interrupts.c
+++ b/cpu/arm920t/s3c24x0/interrupts.c
diff --git a/cpu/arm920t/s3c24x0_serial.c b/cpu/arm920t/s3c24x0/serial.c
index 8327443..8327443 100644
--- a/cpu/arm920t/s3c24x0_serial.c
+++ b/cpu/arm920t/s3c24x0/serial.c
diff --git a/cpu/arm920t/s3c24x0_speed.c b/cpu/arm920t/s3c24x0/speed.c
index e0dca62..e0dca62 100644
--- a/cpu/arm920t/s3c24x0_speed.c
+++ b/cpu/arm920t/s3c24x0/speed.c
diff --git a/cpu/arm920t/usb_ohci.c b/cpu/arm920t/s3c24x0/usb_ohci.c
index 6f4a9f7..6f4a9f7 100644
--- a/cpu/arm920t/usb_ohci.c
+++ b/cpu/arm920t/s3c24x0/usb_ohci.c
diff --git a/cpu/arm920t/usb_ohci.h b/cpu/arm920t/s3c24x0/usb_ohci.h
index fab0e65..fab0e65 100644
--- a/cpu/arm920t/usb_ohci.h
+++ b/cpu/arm920t/s3c24x0/usb_ohci.h
generated by cgit v1.1 at 2024-11-27 14:47:24 +0000