#include <i2c.h>
#include <watchdog.h>
+DECLARE_GLOBAL_DATA_PTR;
+
#ifdef I2C_QUIRK_REG
struct mxc_i2c_regs {
uint8_t iadr;
};
#endif
+
+#ifndef CONFIG_SYS_MXC_I2C1_SPEED
+#define CONFIG_SYS_MXC_I2C1_SPEED 100000
+#endif
+#ifndef CONFIG_SYS_MXC_I2C2_SPEED
+#define CONFIG_SYS_MXC_I2C2_SPEED 100000
+#endif
+#ifndef CONFIG_SYS_MXC_I2C3_SPEED
+#define CONFIG_SYS_MXC_I2C3_SPEED 100000
+#endif
+
+#ifndef CONFIG_SYS_MXC_I2C1_SLAVE
+#define CONFIG_SYS_MXC_I2C1_SLAVE 0
+#endif
+#ifndef CONFIG_SYS_MXC_I2C2_SLAVE
+#define CONFIG_SYS_MXC_I2C2_SLAVE 0
+#endif
+#ifndef CONFIG_SYS_MXC_I2C3_SLAVE
+#define CONFIG_SYS_MXC_I2C3_SLAVE 0
+#endif
+
+
/*
* Calculate and set proper clock divider
*/
return 0;
}
-/*
- * Get I2C Speed
- */
-static unsigned int bus_i2c_get_bus_speed(void *base)
-{
- struct mxc_i2c_regs *i2c_regs = (struct mxc_i2c_regs *)base;
- u8 clk_idx = readb(&i2c_regs->ifdr);
- u8 clk_div;
-
- for (clk_div = 0; i2c_clk_div[clk_div][1] != clk_idx; clk_div++)
- ;
-
- return mxc_get_clock(MXC_I2C_CLK) / i2c_clk_div[clk_div][0];
-}
-
#define ST_BUS_IDLE (0 | (I2SR_IBB << 8))
#define ST_BUS_BUSY (I2SR_IBB | (I2SR_IBB << 8))
#define ST_IIF (I2SR_IIF | (I2SR_IIF << 8))
struct i2c_parms i2c_data[3];
};
-/*
- * For SPL boot some boards need i2c before SDRAM is initialized so force
- * variables to live in SRAM
- */
-static struct sram_data __attribute__((section(".data"))) srdata;
-
-void *get_base(void)
-{
-#ifdef CONFIG_SYS_I2C_BASE
-#ifdef CONFIG_I2C_MULTI_BUS
- void *ret = srdata.i2c_data[srdata.curr_i2c_bus].base;
- if (ret)
- return ret;
-#endif
- return (void *)CONFIG_SYS_I2C_BASE;
-#elif defined(CONFIG_I2C_MULTI_BUS)
- return srdata.i2c_data[srdata.curr_i2c_bus].base;
+static void * const i2c_bases[] = {
+#if defined(CONFIG_MX25)
+ (void *)IMX_I2C_BASE,
+ (void *)IMX_I2C2_BASE,
+ (void *)IMX_I2C3_BASE
+#elif defined(CONFIG_MX27)
+ (void *)IMX_I2C1_BASE,
+ (void *)IMX_I2C2_BASE
+#elif defined(CONFIG_MX31) || defined(CONFIG_MX35) || \
+ defined(CONFIG_MX51) || defined(CONFIG_MX53) || \
+ defined(CONFIG_MX6)
+ (void *)I2C1_BASE_ADDR,
+ (void *)I2C2_BASE_ADDR,
+ (void *)I2C3_BASE_ADDR
+#elif defined(CONFIG_VF610)
+ (void *)I2C0_BASE_ADDR
#else
- return srdata.i2c_data[0].base;
+#error "architecture not supported"
#endif
+};
+
+void *i2c_get_base(struct i2c_adapter *adap)
+{
+ return i2c_bases[adap->hwadapnr];
}
static struct i2c_parms *i2c_get_parms(void *base)
{
+ struct sram_data *srdata = (void *)gd->srdata;
int i = 0;
- struct i2c_parms *p = srdata.i2c_data;
- while (i < ARRAY_SIZE(srdata.i2c_data)) {
+ struct i2c_parms *p = srdata->i2c_data;
+ while (i < ARRAY_SIZE(srdata->i2c_data)) {
if (p->base == base)
return p;
p++;
return 0;
}
-#ifdef CONFIG_I2C_MULTI_BUS
-unsigned int i2c_get_bus_num(void)
-{
- return srdata.curr_i2c_bus;
-}
-
-int i2c_set_bus_num(unsigned bus_idx)
-{
- if (bus_idx >= ARRAY_SIZE(srdata.i2c_data))
- return -1;
- if (!srdata.i2c_data[bus_idx].base)
- return -1;
- srdata.curr_i2c_bus = bus_idx;
- return 0;
-}
-#endif
-
-int i2c_read(uchar chip, uint addr, int alen, uchar *buf, int len)
+static int mxc_i2c_read(struct i2c_adapter *adap, uint8_t chip,
+ uint addr, int alen, uint8_t *buffer,
+ int len)
{
- return bus_i2c_read(get_base(), chip, addr, alen, buf, len);
+ return bus_i2c_read(i2c_get_base(adap), chip, addr, alen, buffer, len);
}
-int i2c_write(uchar chip, uint addr, int alen, uchar *buf, int len)
+static int mxc_i2c_write(struct i2c_adapter *adap, uint8_t chip,
+ uint addr, int alen, uint8_t *buffer,
+ int len)
{
- return bus_i2c_write(get_base(), chip, addr, alen, buf, len);
+ return bus_i2c_write(i2c_get_base(adap), chip, addr, alen, buffer, len);
}
/*
* Test if a chip at a given address responds (probe the chip)
*/
-int i2c_probe(uchar chip)
+static int mxc_i2c_probe(struct i2c_adapter *adap, uint8_t chip)
{
- return bus_i2c_write(get_base(), chip, 0, 0, NULL, 0);
+ return bus_i2c_write(i2c_get_base(adap), chip, 0, 0, NULL, 0);
}
void bus_i2c_init(void *base, int speed, int unused,
int (*idle_bus_fn)(void *p), void *idle_bus_data)
{
+ struct sram_data *srdata = (void *)gd->srdata;
int i = 0;
- struct i2c_parms *p = srdata.i2c_data;
+ struct i2c_parms *p = srdata->i2c_data;
if (!base)
return;
for (;;) {
}
p++;
i++;
- if (i >= ARRAY_SIZE(srdata.i2c_data))
+ if (i >= ARRAY_SIZE(srdata->i2c_data))
return;
}
bus_i2c_set_bus_speed(base, speed);
/*
* Init I2C Bus
*/
-void i2c_init(int speed, int unused)
+static void mxc_i2c_init(struct i2c_adapter *adap, int speed, int slaveaddr)
{
- bus_i2c_init(get_base(), speed, unused, NULL, NULL);
+ bus_i2c_init(i2c_get_base(adap), speed, slaveaddr, NULL, NULL);
}
/*
* Set I2C Speed
*/
-int i2c_set_bus_speed(unsigned int speed)
+static uint mxc_i2c_set_bus_speed(struct i2c_adapter *adap, uint speed)
{
- return bus_i2c_set_bus_speed(get_base(), speed);
+ return bus_i2c_set_bus_speed(i2c_get_base(adap), speed);
}
/*
- * Get I2C Speed
+ * Register mxc i2c adapters
*/
-unsigned int i2c_get_bus_speed(void)
-{
- return bus_i2c_get_bus_speed(get_base());
-}
+U_BOOT_I2C_ADAP_COMPLETE(mxc0, mxc_i2c_init, mxc_i2c_probe,
+ mxc_i2c_read, mxc_i2c_write,
+ mxc_i2c_set_bus_speed,
+ CONFIG_SYS_MXC_I2C1_SPEED,
+ CONFIG_SYS_MXC_I2C1_SLAVE, 0)
+U_BOOT_I2C_ADAP_COMPLETE(mxc1, mxc_i2c_init, mxc_i2c_probe,
+ mxc_i2c_read, mxc_i2c_write,
+ mxc_i2c_set_bus_speed,
+ CONFIG_SYS_MXC_I2C2_SPEED,
+ CONFIG_SYS_MXC_I2C2_SLAVE, 1)
+#if defined(CONFIG_MX31) || defined(CONFIG_MX35) ||\
+ defined(CONFIG_MX51) || defined(CONFIG_MX53) ||\
+ defined(CONFIG_MX6)
+U_BOOT_I2C_ADAP_COMPLETE(mxc2, mxc_i2c_init, mxc_i2c_probe,
+ mxc_i2c_read, mxc_i2c_write,
+ mxc_i2c_set_bus_speed,
+ CONFIG_SYS_MXC_I2C3_SPEED,
+ CONFIG_SYS_MXC_I2C3_SLAVE, 2)
+#endif
projects / karo-tx-uboot.git / blobdiff