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-rw-r--r--src/cpu/samsung/s5p-common/Makefile.inc2
-rw-r--r--src/cpu/samsung/s5p-common/s3c24x0_i2c.c640
-rw-r--r--src/cpu/samsung/s5p-common/s3c24x0_i2c.h43
3 files changed, 685 insertions, 0 deletions
diff --git a/src/cpu/samsung/s5p-common/Makefile.inc b/src/cpu/samsung/s5p-common/Makefile.inc
index 9747f0d1ab..7de3c285d2 100644
--- a/src/cpu/samsung/s5p-common/Makefile.inc
+++ b/src/cpu/samsung/s5p-common/Makefile.inc
@@ -2,6 +2,7 @@ romstage-y += cpu_info.c
romstage-y += pwm.c # needed by timer.c
romstage-y += s5p_gpio.c
romstage-y += timer.c
+romstage-y += s3c24x0_i2c.c
#romstage-y += sromc.c
#romstage-y += wdt.c
@@ -10,3 +11,4 @@ ramstage-y += cpu_info.c
ramstage-y += pwm.c # needed by timer.c
ramstage-y += timer.c
ramstage-y += s5p_gpio.c
+ramstage-y += s3c24x0_i2c.c
diff --git a/src/cpu/samsung/s5p-common/s3c24x0_i2c.c b/src/cpu/samsung/s5p-common/s3c24x0_i2c.c
new file mode 100644
index 0000000000..0b6f7684b1
--- /dev/null
+++ b/src/cpu/samsung/s5p-common/s3c24x0_i2c.c
@@ -0,0 +1,640 @@
+/*
+ * (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>
+#include <arch/io.h>
+#include "clk.h"
+#include "cpu/samsung/exynos5-common/clk.h"
+#include "cpu/samsung/exynos5250/cpu.h"
+#include "gpio.h"
+#include "cpu/samsung/exynos5250/gpio.h"
+#include "cpu/samsung/exynos5250/pinmux.h"
+
+//#include <fdtdec.h>
+#include "device/i2c.h"
+#include "s3c24x0_i2c.h"
+
+/* for board_i2c_* */
+#include "cpu/samsung/exynos5-common/spl.h"
+
+#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_ACKGEN 0x80 /* Acknowledge generation */
+#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 */
+
+/* The timeouts we live by */
+enum {
+ I2C_XFER_TIMEOUT_MS = 35, /* xfer to complete */
+ I2C_INIT_TIMEOUT_MS = 1000, /* bus free on init */
+ I2C_IDLE_TIMEOUT_MS = 100, /* waiting for bus idle */
+ I2C_STOP_TIMEOUT_US = 200, /* waiting for stop events */
+};
+
+/* We should not rely on any particular ordering of these IDs */
+#if 0
+#ifndef CONFIG_OF_CONTROL
+static enum periph_id periph_for_dev[EXYNOS_I2C_MAX_CONTROLLERS] = {
+ PERIPH_ID_I2C0,
+ PERIPH_ID_I2C1,
+ PERIPH_ID_I2C2,
+ PERIPH_ID_I2C3,
+ PERIPH_ID_I2C4,
+ PERIPH_ID_I2C5,
+ PERIPH_ID_I2C6,
+ PERIPH_ID_I2C7,
+};
+#endif
+#endif
+
+static unsigned int g_current_bus __attribute__((section(".data")));
+static struct s3c24x0_i2c *g_early_i2c_config __attribute__((section(".data")));
+
+static struct s3c24x0_i2c_bus i2c_bus[EXYNOS_I2C_MAX_CONTROLLERS]
+ __attribute__((section(".data")));
+static int i2c_busses __attribute__((section(".data")));
+
+void i2c_set_early_reg(unsigned int base)
+{
+ g_early_i2c_config = (struct s3c24x0_i2c *)base;
+}
+
+static struct s3c24x0_i2c_bus *get_bus(int bus_idx)
+{
+ /* If an early i2c config exists we just use that */
+ if (g_early_i2c_config) {
+ /* FIXME: value not retained from i2c_set_early_reg()? (but then, how
+ * did if (!i2c) check pass earlier on? Corrupt value? */
+ i2c_bus[0].regs = g_early_i2c_config;
+ return &i2c_bus[0];
+ }
+
+ if (bus_idx < i2c_busses)
+ return &i2c_bus[bus_idx];
+ debug("Undefined bus: %d\n", bus_idx);
+ return NULL;
+}
+
+static inline struct exynos5_gpio_part1 *exynos_get_base_gpio1(void)
+{
+ return (struct exynos5_gpio_part1 *)(EXYNOS5_GPIO_PART1_BASE);
+}
+
+static int WaitForXfer(struct s3c24x0_i2c *i2c)
+{
+ int i;
+
+ i = I2C_XFER_TIMEOUT_MS * 20;
+ while (!(readl(&i2c->iiccon) & I2CCON_IRPND)) {
+ if (i == 0) {
+ debug("%s: i2c xfer timeout\n", __func__);
+ return I2C_NOK_TOUT;
+ }
+ udelay(50);
+ i--;
+ }
+
+ return I2C_OK;
+}
+
+static int IsACK(struct s3c24x0_i2c *i2c)
+{
+ return !(readl(&i2c->iicstat) & I2CSTAT_NACK);
+}
+
+static void ReadWriteByte(struct s3c24x0_i2c *i2c)
+{
+ uint32_t x;
+
+ x = readl(&i2c->iiccon);
+ writel(x & ~I2CCON_IRPND, &i2c->iiccon);
+ /* FIXME(dhendrix): cannot use nested macro (compilation failure) */
+// writel(readl(&i2c->iiccon) & ~I2CCON_IRPND, &i2c->iiccon);
+}
+
+static void i2c_ch_init(struct s3c24x0_i2c *i2c, int speed, int slaveadd)
+{
+ ulong freq, pres = 16, div;
+
+ freq = clock_get_periph_rate(PERIPH_ID_I2C0);
+ /* calculate prescaler and divisor values */
+ 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 */
+ writel((div & 0x0F) | 0xA0 | ((pres == 512) ? 0x40 : 0), &i2c->iiccon);
+
+ /* init to SLAVE REVEIVE and set slaveaddr */
+ writel(0, &i2c->iicstat);
+ writel(slaveadd, &i2c->iicadd);
+ /* program Master Transmit (and implicit STOP) */
+ writel(I2C_MODE_MT | I2C_TXRX_ENA, &i2c->iicstat);
+}
+
+/* TODO: determine if this is necessary to init board using FDT-provided info */
+#if 0
+void board_i2c_init(const void *blob)
+{
+ /*
+ * Turn off the early i2c configuration and init the i2c properly,
+ * this is done here to enable the use of i2c configs from FDT.
+ */
+ i2c_set_early_reg(0);
+
+#ifdef CONFIG_OF_CONTROL
+ int node_list[EXYNOS_I2C_MAX_CONTROLLERS];
+ int i, count;
+
+ count = fdtdec_find_aliases_for_id(blob, "i2c",
+ COMPAT_SAMSUNG_S3C2440_I2C, node_list,
+ EXYNOS_I2C_MAX_CONTROLLERS);
+
+ for (i = 0; i < count; i++) {
+ struct s3c24x0_i2c_bus *bus;
+ int node = node_list[i];
+
+ if (node < 0)
+ continue;
+ bus = &i2c_bus[i2c_busses];
+ bus->regs = (struct s3c24x0_i2c *)
+ fdtdec_get_addr(blob, node, "reg");
+ bus->id = (enum periph_id)
+ fdtdec_get_int(blob, node, "samsung,periph-id", -1);
+ bus->node = node;
+ bus->bus_num = i2c_busses++;
+ }
+#else
+ int i;
+
+ for (i = 0; i < EXYNOS_I2C_MAX_CONTROLLERS; i++) {
+ uintptr_t reg_addr = samsung_get_base_i2c() +
+ EXYNOS_I2C_SPACING * i;
+
+ i2c_bus[i].regs = (struct s3c24x0_i2c_bus *)reg_addr;
+ i2c_bus[i].id = periph_for_dev[i];
+ }
+ i2c_busses = EXYNOS_I2C_MAX_CONTROLLERS;
+#endif
+}
+#endif
+
+/*
+ * MULTI BUS I2C support
+ */
+/*
+ * FIXME(dhendrix): not sure why this had to be guarded, but the code
+ * should probably go into an exynos5-specific .c file if it really is
+ * not generic.
+ */
+//#ifdef CONFIG_EXYNOS5
+static void i2c_bus_init(struct s3c24x0_i2c_bus *i2c, unsigned int bus)
+{
+ exynos_pinmux_config(i2c->id, 0);
+
+ i2c_ch_init(i2c->regs, CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE);
+}
+//#else
+//#error "should not be here"
+//static void i2c_bus_init(struct s3c24x0_i2c_bus *i2c, unsigned int bus) {}
+//#endif
+
+#ifdef CONFIG_I2C_MULTI_BUS
+int i2c_set_bus_num(unsigned int bus)
+{
+ struct s3c24x0_i2c_bus *i2c;
+
+ i2c = get_bus(bus);
+ if (!i2c)
+ return -1;
+ g_current_bus = bus;
+ i2c_bus_init(i2c, g_current_bus);
+
+ return 0;
+}
+
+unsigned int i2c_get_bus_num(void)
+{
+ return g_current_bus;
+}
+#endif
+
+#ifdef CONFIG_OF_CONTROL
+int i2c_get_bus_num_fdt(const void *blob, int node)
+{
+ enum fdt_compat_id compat;
+ fdt_addr_t reg;
+ int i;
+
+ compat = fdtdec_lookup(blob, node);
+ if (compat != COMPAT_SAMSUNG_S3C2440_I2C) {
+ debug("%s: Not a supported I2C node\n", __func__);
+ return -1;
+ }
+
+ reg = fdtdec_get_addr(blob, node, "reg");
+ for (i = 0; i < i2c_busses; i++)
+ if (reg == (fdt_addr_t)(uintptr_t)i2c_bus[i].regs)
+ return i;
+
+ debug("%s: Can't find any matched I2C bus\n", __func__);
+ return -1;
+}
+
+int i2c_reset_port_fdt(const void *blob, int node)
+{
+ struct s3c24x0_i2c_bus *i2c;
+
+ int bus;
+
+ bus = i2c_get_bus_num_fdt(blob, node);
+ if (bus < 0) {
+ printf("could not get bus for node %d\n", node);
+ return -1;
+ }
+ i2c = get_bus(bus);
+ if (!i2c) {
+ printf("get_bus() failed for node node %d\n", node);
+ return -1;
+ }
+
+ i2c_ch_init(i2c->regs, CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE);
+
+ return 0;
+}
+#endif
+
+/*
+ * Verify the whether I2C ACK was received or not
+ *
+ * @param i2c pointer to I2C register base
+ * @param buf array of data
+ * @param len length of data
+ * return I2C_OK when transmission done
+ * I2C_NACK otherwise
+ */
+static int i2c_send_verify(struct s3c24x0_i2c *i2c, unsigned char buf[],
+ unsigned char len)
+{
+ int i, result = I2C_OK;
+
+ if (IsACK(i2c)) {
+ for (i = 0; (i < len) && (result == I2C_OK); i++) {
+ writel(buf[i], &i2c->iicds);
+ ReadWriteByte(i2c);
+ result = WaitForXfer(i2c);
+ if (result == I2C_OK && !IsACK(i2c))
+ result = I2C_NACK;
+ }
+ } else {
+ result = I2C_NACK;
+ }
+
+ return result;
+}
+
+void i2c_init(int speed, int slaveadd)
+{
+ struct s3c24x0_i2c_bus *i2c;
+ struct exynos5_gpio_part1 *gpio;
+ int i;
+ uint32_t x;
+
+ /* By default i2c channel 0 is the current bus */
+ g_current_bus = 0;
+
+ i2c = get_bus(g_current_bus);
+ if (!i2c)
+ return;
+
+ i2c_bus_init(i2c, g_current_bus);
+
+ /* wait for some time to give previous transfer a chance to finish */
+ i = I2C_INIT_TIMEOUT_MS * 20;
+ while ((readl(&i2c->regs->iicstat) & I2CSTAT_BSY) && (i > 0)) {
+ udelay(50);
+ i--;
+ }
+
+ gpio = exynos_get_base_gpio1();
+ /* FIXME(dhendrix): cannot use nested macro (compilation failure) */
+// writel((readl(&gpio->b3.con) & ~0x00FF) | 0x0022, &gpio->b3.con);
+ x = readl(&gpio->b3.con);
+ writel((x & ~0x00FF) | 0x0022, &gpio->b3.con);
+
+ i2c_ch_init(i2c->regs, speed, slaveadd);
+}
+
+/*
+ * Send a STOP event and wait for it to have completed
+ *
+ * @param mode If it is a master transmitter or receiver
+ * @return I2C_OK if the line became idle before timeout I2C_NOK_TOUT otherwise
+ */
+static int i2c_send_stop(struct s3c24x0_i2c *i2c, int mode)
+{
+ int timeout;
+
+ /* Setting the STOP event to fire */
+ writel(mode | I2C_TXRX_ENA, &i2c->iicstat);
+ ReadWriteByte(i2c);
+
+ /* Wait for the STOP to send and the bus to go idle */
+ for (timeout = I2C_STOP_TIMEOUT_US; timeout > 0; timeout -= 5) {
+ if (!(readl(&i2c->iicstat) & I2CSTAT_BSY))
+ return I2C_OK;
+ udelay(5);
+ }
+
+ return I2C_NOK_TOUT;
+}
+
+/*
+ * 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(struct s3c24x0_i2c *i2c,
+ unsigned char cmd_type,
+ unsigned char chip,
+ unsigned char addr[],
+ unsigned char addr_len,
+ unsigned char data[],
+ unsigned short data_len)
+{
+ int i, result, stop_bit_result;
+ uint32_t x;
+
+ if (data == 0 || data_len == 0) {
+ /* Don't support data transfer of no length or to address 0 */
+ debug("i2c_transfer: bad call\n");
+ return I2C_NOK;
+ }
+
+ /* Check I2C bus idle */
+ i = I2C_IDLE_TIMEOUT_MS * 20;
+ while ((readl(&i2c->iicstat) & I2CSTAT_BSY) && (i > 0)) {
+ udelay(50);
+ i--;
+ }
+
+ if (readl(&i2c->iicstat) & I2CSTAT_BSY) {
+ debug("%s: bus busy\n", __func__);
+ return I2C_NOK_TOUT;
+ }
+
+ /* FIXME(dhendrix): cannot use nested macro (compilation failure) */
+ //writel(readl(&i2c->iiccon) | I2CCON_ACKGEN, &i2c->iiccon);
+ x = readl(&i2c->iiccon);
+ writel(x | I2CCON_ACKGEN, &i2c->iiccon);
+
+ if (addr && addr_len) {
+ writel(chip, &i2c->iicds);
+ /* send START */
+ writel(I2C_MODE_MT | I2C_TXRX_ENA | I2C_START_STOP,
+ &i2c->iicstat);
+ if (WaitForXfer(i2c) == I2C_OK)
+ result = i2c_send_verify(i2c, addr, addr_len);
+ else
+ result = I2C_NACK;
+ } else
+ result = I2C_NACK;
+
+ switch (cmd_type) {
+ case I2C_WRITE:
+ if (result == I2C_OK)
+ result = i2c_send_verify(i2c, data, data_len);
+ else {
+ writel(chip, &i2c->iicds);
+ /* send START */
+ writel(I2C_MODE_MT | I2C_TXRX_ENA | I2C_START_STOP,
+ &i2c->iicstat);
+ if (WaitForXfer(i2c) == I2C_OK)
+ result = i2c_send_verify(i2c, data, data_len);
+ }
+
+ if (result == I2C_OK)
+ result = WaitForXfer(i2c);
+
+ stop_bit_result = i2c_send_stop(i2c, I2C_MODE_MT);
+ break;
+
+ case I2C_READ:
+ {
+ int was_ok = (result == I2C_OK);
+
+ writel(chip, &i2c->iicds);
+ /* resend START */
+ writel(I2C_MODE_MR | I2C_TXRX_ENA |
+ I2C_START_STOP, &i2c->iicstat);
+ ReadWriteByte(i2c);
+ result = WaitForXfer(i2c);
+
+ if (was_ok || IsACK(i2c)) {
+ i = 0;
+ while ((i < data_len) && (result == I2C_OK)) {
+ /* disable ACK for final READ */
+ if (i == data_len - 1) {
+ /* FIXME(dhendrix): nested macro */
+#if 0
+ writel(readl(&i2c->iiccon) &
+ ~I2CCON_ACKGEN,
+ &i2c->iiccon);
+#endif
+ x = readl(&i2c->iiccon) & ~I2CCON_ACKGEN;
+ writel(x, &i2c->iiccon);
+ }
+ ReadWriteByte(i2c);
+ result = WaitForXfer(i2c);
+ data[i] = readl(&i2c->iicds);
+ i++;
+ }
+ } else {
+ result = I2C_NACK;
+ }
+
+ stop_bit_result = i2c_send_stop(i2c, I2C_MODE_MR);
+ break;
+ }
+
+ default:
+ debug("i2c_transfer: bad call\n");
+ result = stop_bit_result = I2C_NOK;
+ break;
+ }
+
+ /*
+ * If the transmission went fine, then only the stop bit was left to
+ * fail. Otherwise, the real failure we're interested in came before
+ * that, during the actual transmission.
+ */
+ return (result == I2C_OK) ? stop_bit_result : result;
+}
+
+int i2c_probe(uchar chip)
+{
+ struct s3c24x0_i2c_bus *i2c;
+ uchar buf[1];
+ int ret;
+
+ i2c = get_bus(g_current_bus);
+ if (!i2c)
+ return -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).
+ */
+ if (board_i2c_claim_bus(i2c->node)) {
+ debug("I2C cannot claim bus %d\n", i2c->bus_num);
+ return -1;
+ }
+ ret = i2c_transfer(i2c->regs, I2C_READ, chip << 1, 0, 0, buf, 1);
+ board_i2c_release_bus(i2c->node);
+
+ return ret != I2C_OK;
+}
+
+int i2c_read(uchar chip, uint addr, int alen, uchar *buffer, int len)
+{
+ struct s3c24x0_i2c_bus *i2c;
+ uchar xaddr[4];
+ int ret;
+
+ if (alen > 4) {
+ debug("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 CONFIG_SYS_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)) &
+ CONFIG_SYS_I2C_EEPROM_ADDR_OVERFLOW);
+#endif
+ i2c = get_bus(g_current_bus);
+ if (!i2c)
+ return -1;
+ if (board_i2c_claim_bus(i2c->node)) {
+ debug("I2C cannot claim bus %d\n", i2c->bus_num);
+ return -1;
+ }
+ ret = i2c_transfer(i2c->regs, I2C_READ, chip << 1, &xaddr[4 - alen],
+ alen, buffer, len);
+ board_i2c_release_bus(i2c->node);
+ if (ret) {
+ debug("I2c read: failed %d\n", ret);
+ return 1;
+ }
+ return 0;
+}
+
+int i2c_write(uchar chip, uint addr, int alen, uchar *buffer, int len)
+{
+ struct s3c24x0_i2c_bus *i2c;
+ uchar xaddr[4];
+ int ret;
+
+ if (alen > 4) {
+ debug("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 CONFIG_SYS_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)) &
+ CONFIG_SYS_I2C_EEPROM_ADDR_OVERFLOW);
+#endif
+ i2c = get_bus(g_current_bus);
+ if (!i2c)
+ return -1;
+ if (board_i2c_claim_bus(i2c->node)) {
+ debug("I2C cannot claim bus %d\n", i2c->bus_num);
+ return -1;
+ }
+ ret = i2c_transfer(i2c->regs, I2C_WRITE, chip << 1, &xaddr[4 - alen],
+ alen, buffer, len);
+ board_i2c_release_bus(i2c->node);
+
+ return ret != 0;
+}
diff --git a/src/cpu/samsung/s5p-common/s3c24x0_i2c.h b/src/cpu/samsung/s5p-common/s3c24x0_i2c.h
new file mode 100644
index 0000000000..eb68af78f0
--- /dev/null
+++ b/src/cpu/samsung/s5p-common/s3c24x0_i2c.h
@@ -0,0 +1,43 @@
+/*
+ * Copyright (C) 2012 Samsung Electronics
+ *
+ * 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
+ */
+
+#ifndef _S3C24X0_I2C_H
+#define _S3C24X0_I2C_H
+
+/* FIXME: gross hack */
+#include "cpu/samsung/exynos5250/periph.h"
+
+struct s3c24x0_i2c {
+ u32 iiccon;
+ u32 iicstat;
+ u32 iicadd;
+ u32 iicds;
+ u32 iiclc;
+};
+
+struct s3c24x0_i2c_bus {
+ int node; /* device tree node */
+ int bus_num; /* i2c bus number */
+ struct s3c24x0_i2c *regs;
+ enum periph_id id;
+};
+#endif /* _S3C24X0_I2C_H */
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-02 23:13:17 +0000