@@ -2028,6 +2028,24 @@ CBFS (Coreboot Filesystem) support
- CONFIG_SYS_RCAR_I2C3_SPEED for for the speed channel 3
- CONFIF_SYS_RCAR_I2C_NUM_CONTROLLERS for number of i2c buses
+ - drivers/i2c/sh_i2c.c:
+ - activate this driver with CONFIG_SYS_I2C_SH
+ - This driver adds from 2 to 5 i2c buses
+
+ - CONFIG_SYS_I2C_SH_BASE0 for setting the register channel 0
+ - CONFIG_SYS_I2C_SH_SPEED0 for for the speed channel 0
+ - CONFIG_SYS_I2C_SH_BASE1 for setting the register channel 1
+ - CONFIG_SYS_I2C_SH_SPEED1 for for the speed channel 1
+ - CONFIG_SYS_I2C_SH_BASE2 for setting the register channel 2
+ - CONFIG_SYS_I2C_SH_SPEED2 for for the speed channel 2
+ - CONFIG_SYS_I2C_SH_BASE3 for setting the register channel 3
+ - CONFIG_SYS_I2C_SH_SPEED3 for for the speed channel 3
+ - CONFIG_SYS_I2C_SH_BASE4 for setting the register channel 4
+ - CONFIG_SYS_I2C_SH_SPEED4 for for the speed channel 4
+ - CONFIG_SYS_I2C_SH_BASE5 for setting the register channel 5
+ - CONFIG_SYS_I2C_SH_SPEED5 for for the speed channel 5
+ - CONFIF_SYS_I2C_SH_NUM_CONTROLLERS for nummber of i2c buses
+
additional defines:
CONFIG_SYS_NUM_I2C_BUSES
@@ -289,7 +289,6 @@ void adjust_core_voltage(void)
{
u8 data;
- i2c_init(CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE);
data = 0x35;
i2c_set_bus_num(0);
i2c_write(0x40, 3, 1, &data, 1);
@@ -57,8 +57,7 @@ int board_late_init(void)
outl(inl(MSTPCR2) & ~0x10000000, MSTPCR2);
- i2c_init(CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE);
- i2c_set_bus_num(CONFIG_SYS_I2C_MODULE); /* Use I2C 1 */
+ i2c_set_bus_num(1); /* Use I2C 1 */
/* Read MAC address */
i2c_read(0x50, 0x10, 0, mac, 6);
@@ -22,7 +22,6 @@ COBJS-$(CONFIG_PCA9564_I2C) += pca9564_i2c.o
COBJS-$(CONFIG_DRIVER_S3C24X0_I2C) += s3c24x0_i2c.o
COBJS-$(CONFIG_TSI108_I2C) += tsi108_i2c.o
COBJS-$(CONFIG_U8500_I2C) += u8500_i2c.o
-COBJS-$(CONFIG_SH_I2C) += sh_i2c.o
COBJS-$(CONFIG_SH_SH7734_I2C) += sh_sh7734_i2c.o
COBJS-$(CONFIG_SYS_I2C) += i2c_core.o
COBJS-$(CONFIG_SYS_I2C_FSL) += fsl_i2c.o
@@ -30,6 +29,7 @@ COBJS-$(CONFIG_SYS_I2C_FTI2C010) += fti2c010.o
COBJS-$(CONFIG_SYS_I2C_MXC) += mxc_i2c.o
COBJS-$(CONFIG_SYS_I2C_PPC4XX) += ppc4xx_i2c.o
COBJS-$(CONFIG_SYS_I2C_RCAR) += rcar_i2c.o
+COBJS-$(CONFIG_SYS_I2C_SH) += sh_i2c.o
COBJS-$(CONFIG_SYS_I2C_SOFT) += soft_i2c.o
COBJS-$(CONFIG_SYS_I2C_TEGRA) += tegra_i2c.o
COBJS-$(CONFIG_ZYNQ_I2C) += zynq_i2c.o
@@ -6,6 +6,7 @@
*/
#include <common.h>
+#include <i2c.h>
#include <asm/io.h>
DECLARE_GLOBAL_DATA_PTR;
@@ -22,8 +23,6 @@ struct sh_i2c {
};
#undef ureg
-static struct sh_i2c *base;
-
/* ICCR */
#define SH_I2C_ICCR_ICE (1 << 7)
#define SH_I2C_ICCR_RACK (1 << 6)
@@ -43,202 +42,165 @@ static struct sh_i2c *base;
#define SH_I2C_ICIC_ICCHB8 (1 << 6)
#endif
+static const struct sh_i2c *i2c_dev[CONFIG_SYS_I2C_SH_NUM_CONTROLLERS] = {
+ (struct sh_i2c *)CONFIG_SYS_I2C_SH_BASE0,
+#ifdef CONFIG_SYS_I2C_SH_BASE1
+ (struct sh_i2c *)CONFIG_SYS_I2C_SH_BASE1,
+#endif
+#ifdef CONFIG_SYS_I2C_SH_BASE2
+ (struct sh_i2c *)CONFIG_SYS_I2C_SH_BASE2,
+#endif
+#ifdef CONFIG_SYS_I2C_SH_BASE3
+ (struct sh_i2c *)CONFIG_SYS_I2C_SH_BASE3,
+#endif
+#ifdef CONFIG_SYS_I2C_SH_BASE4
+ (struct sh_i2c *)CONFIG_SYS_I2C_SH_BASE4,
+#endif
+};
+
static u16 iccl, icch;
#define IRQ_WAIT 1000
-static void irq_dte(struct sh_i2c *base)
+static void sh_irq_dte(struct sh_i2c *dev)
{
int i;
- for (i = 0 ; i < IRQ_WAIT ; i++) {
- if (SH_IC_DTE & readb(&base->icsr))
+ for (i = 0; i < IRQ_WAIT; i++) {
+ if (SH_IC_DTE & readb(&dev->icsr))
break;
udelay(10);
}
}
-static int irq_dte_with_tack(struct sh_i2c *base)
+static int sh_irq_dte_with_tack(struct sh_i2c *dev)
{
int i;
- for (i = 0 ; i < IRQ_WAIT ; i++) {
- if (SH_IC_DTE & readb(&base->icsr))
+ for (i = 0; i < IRQ_WAIT; i++) {
+ if (SH_IC_DTE & readb(&dev->icsr))
break;
- if (SH_IC_TACK & readb(&base->icsr))
+ if (SH_IC_TACK & readb(&dev->icsr))
return -1;
udelay(10);
}
return 0;
}
-static void irq_busy(struct sh_i2c *base)
+static void sh_irq_busy(struct sh_i2c *dev)
{
int i;
- for (i = 0 ; i < IRQ_WAIT ; i++) {
- if (!(SH_IC_BUSY & readb(&base->icsr)))
+ for (i = 0; i < IRQ_WAIT; i++) {
+ if (!(SH_IC_BUSY & readb(&dev->icsr)))
break;
udelay(10);
}
}
-static int i2c_set_addr(struct sh_i2c *base, u8 id, u8 reg, int stop)
+static int sh_i2c_set_addr(struct sh_i2c *dev, u8 chip, u8 addr, int stop)
{
u8 icic = SH_IC_TACK;
- clrbits_8(&base->iccr, SH_I2C_ICCR_ICE);
- setbits_8(&base->iccr, SH_I2C_ICCR_ICE);
+ debug("%s: chip: %x, addr: %x iccl: %x, icch %x\n",
+ __func__, chip, addr, iccl, icch);
+ clrbits_8(&dev->iccr, SH_I2C_ICCR_ICE);
+ setbits_8(&dev->iccr, SH_I2C_ICCR_ICE);
- writeb(iccl & 0xff, &base->iccl);
- writeb(icch & 0xff, &base->icch);
+ writeb(iccl & 0xff, &dev->iccl);
+ writeb(icch & 0xff, &dev->icch);
#ifdef CONFIG_SH_I2C_8BIT
if (iccl > 0xff)
icic |= SH_I2C_ICIC_ICCLB8;
if (icch > 0xff)
icic |= SH_I2C_ICIC_ICCHB8;
#endif
- writeb(icic, &base->icic);
+ writeb(icic, &dev->icic);
- writeb((SH_I2C_ICCR_ICE|SH_I2C_ICCR_RTS|SH_I2C_ICCR_BUSY), &base->iccr);
- irq_dte(base);
+ writeb((SH_I2C_ICCR_ICE|SH_I2C_ICCR_RTS|SH_I2C_ICCR_BUSY), &dev->iccr);
+ sh_irq_dte(dev);
- clrbits_8(&base->icsr, SH_IC_TACK);
- writeb(id << 1, &base->icdr);
- if (irq_dte_with_tack(base) != 0)
+ clrbits_8(&dev->icsr, SH_IC_TACK);
+ writeb(chip << 1, &dev->icdr);
+ if (sh_irq_dte_with_tack(dev) != 0)
return -1;
- writeb(reg, &base->icdr);
+ writeb(addr, &dev->icdr);
if (stop)
- writeb((SH_I2C_ICCR_ICE|SH_I2C_ICCR_RTS), &base->iccr);
+ writeb((SH_I2C_ICCR_ICE|SH_I2C_ICCR_RTS), &dev->iccr);
- if (irq_dte_with_tack(base) != 0)
+ if (sh_irq_dte_with_tack(dev) != 0)
return -1;
return 0;
}
-static void i2c_finish(struct sh_i2c *base)
+static void sh_i2c_finish(struct sh_i2c *dev)
{
- writeb(0, &base->icsr);
- clrbits_8(&base->iccr, SH_I2C_ICCR_ICE);
+ writeb(0, &dev->icsr);
+ clrbits_8(&dev->iccr, SH_I2C_ICCR_ICE);
}
-static int i2c_raw_write(struct sh_i2c *base, u8 id, u8 reg, u8 val)
+static int
+sh_i2c_raw_write(struct sh_i2c *dev, u8 chip, uint addr, u8 val)
{
int ret = -1;
- if (i2c_set_addr(base, id, reg, 0) != 0)
+ if (sh_i2c_set_addr(dev, chip, addr, 0) != 0)
goto exit0;
udelay(10);
- writeb(val, &base->icdr);
- if (irq_dte_with_tack(base) != 0)
+ writeb(val, &dev->icdr);
+ if (sh_irq_dte_with_tack(dev) != 0)
goto exit0;
- writeb((SH_I2C_ICCR_ICE | SH_I2C_ICCR_RTS), &base->iccr);
- if (irq_dte_with_tack(base) != 0)
+ writeb((SH_I2C_ICCR_ICE | SH_I2C_ICCR_RTS), &dev->iccr);
+ if (sh_irq_dte_with_tack(dev) != 0)
goto exit0;
- irq_busy(base);
+ sh_irq_busy(dev);
ret = 0;
+
exit0:
- i2c_finish(base);
+ sh_i2c_finish(dev);
return ret;
}
-static int i2c_raw_read(struct sh_i2c *base, u8 id, u8 reg)
+static int sh_i2c_raw_read(struct sh_i2c *dev, u8 chip, u8 addr)
{
int ret = -1;
#if defined(CONFIG_SH73A0)
- if (i2c_set_addr(base, id, reg, 0) != 0)
+ if (sh_i2c_set_addr(dev, chip, addr, 0) != 0)
goto exit0;
#else
- if (i2c_set_addr(base, id, reg, 1) != 0)
+ if (sh_i2c_set_addr(dev, chip, addr, 1) != 0)
goto exit0;
udelay(100);
#endif
- writeb((SH_I2C_ICCR_ICE|SH_I2C_ICCR_RTS|SH_I2C_ICCR_BUSY), &base->iccr);
- irq_dte(base);
+ writeb((SH_I2C_ICCR_ICE|SH_I2C_ICCR_RTS|SH_I2C_ICCR_BUSY), &dev->iccr);
+ sh_irq_dte(dev);
- writeb(id << 1 | 0x01, &base->icdr);
- if (irq_dte_with_tack(base) != 0)
+ writeb(chip << 1 | 0x01, &dev->icdr);
+ if (sh_irq_dte_with_tack(dev) != 0)
goto exit0;
- writeb((SH_I2C_ICCR_ICE|SH_I2C_ICCR_SCP), &base->iccr);
- if (irq_dte_with_tack(base) != 0)
+ writeb((SH_I2C_ICCR_ICE|SH_I2C_ICCR_SCP), &dev->iccr);
+ if (sh_irq_dte_with_tack(dev) != 0)
goto exit0;
- ret = readb(&base->icdr) & 0xff;
+ ret = readb(&dev->icdr) & 0xff;
+
+ writeb((SH_I2C_ICCR_ICE|SH_I2C_ICCR_RACK), &dev->iccr);
+ readb(&dev->icdr); /* Dummy read */
+ sh_irq_busy(dev);
- writeb((SH_I2C_ICCR_ICE|SH_I2C_ICCR_RACK), &base->iccr);
- readb(&base->icdr); /* Dummy read */
- irq_busy(base);
exit0:
- i2c_finish(base);
+ sh_i2c_finish(dev);
return ret;
}
-#ifdef CONFIG_I2C_MULTI_BUS
-static unsigned int current_bus;
-
-/**
- * i2c_set_bus_num - change active I2C bus
- * @bus: bus index, zero based
- * @returns: 0 on success, non-0 on failure
- */
-int i2c_set_bus_num(unsigned int bus)
-{
- if ((bus < 0) || (bus >= CONFIG_SYS_MAX_I2C_BUS)) {
- printf("Bad bus: %d\n", bus);
- return -1;
- }
-
- switch (bus) {
- case 0:
- base = (void *)CONFIG_SH_I2C_BASE0;
- break;
- case 1:
- base = (void *)CONFIG_SH_I2C_BASE1;
- break;
-#ifdef CONFIG_SH_I2C_BASE2
- case 2:
- base = (void *)CONFIG_SH_I2C_BASE2;
- break;
-#endif
-#ifdef CONFIG_SH_I2C_BASE3
- case 3:
- base = (void *)CONFIG_SH_I2C_BASE3;
- break;
-#endif
-#ifdef CONFIG_SH_I2C_BASE4
- case 4:
- base = (void *)CONFIG_SH_I2C_BASE4;
- break;
-#endif
- default:
- return -1;
- }
- current_bus = bus;
-
- return 0;
-}
-
-/**
- * i2c_get_bus_num - returns index of active I2C bus
- */
-unsigned int i2c_get_bus_num(void)
-{
- return current_bus;
-}
-#endif
-
-#define SH_I2C_ICCL_CALC(clk, date, t_low, t_high) \
- ((clk / rate) * (t_low / t_low + t_high))
-#define SH_I2C_ICCH_CALC(clk, date, t_low, t_high) \
- ((clk / rate) * (t_high / t_low + t_high))
-
-void i2c_init(int speed, int slaveaddr)
+static void
+sh_i2c_init(struct i2c_adapter *adap, int speed, int slaveadd)
{
int num, denom, tmp;
@@ -246,11 +208,6 @@ void i2c_init(int speed, int slaveaddr)
if (!(gd->flags & GD_FLG_RELOC))
return;
-#ifdef CONFIG_I2C_MULTI_BUS
- current_bus = 0;
-#endif
- base = (struct sh_i2c *)CONFIG_SH_I2C_BASE0;
-
/*
* Calculate the value for iccl. From the data sheet:
* iccl = (p-clock / transfer-rate) * (L / (L + H))
@@ -272,67 +229,78 @@ void i2c_init(int speed, int slaveaddr)
icch = (u16)((num/denom) + 1);
else
icch = (u16)(num/denom);
+
+ debug("clock: %d, speed %d, iccl: %x, icch: %x\n",
+ CONFIG_SH_I2C_CLOCK, speed, iccl, icch);
}
-/*
- * i2c_read: - Read multiple bytes from an i2c device
- *
- * The higher level routines take into account that this function is only
- * called with len < page length of the device (see configuration file)
- *
- * @chip: address of the chip which is to be read
- * @addr: i2c data address within the chip
- * @alen: length of the i2c data address (1..2 bytes)
- * @buffer: where to write the data
- * @len: how much byte do we want to read
- * @return: 0 in case of success
- */
-int i2c_read(u8 chip, u32 addr, int alen, u8 *buffer, int len)
+static int sh_i2c_read(struct i2c_adapter *adap, uint8_t chip,
+ uint addr, int alen, u8 *data, int len)
{
- int ret;
- int i = 0;
- for (i = 0 ; i < len ; i++) {
- ret = i2c_raw_read(base, chip, addr + i);
+ int ret, i;
+ struct sh_i2c *dev = (struct sh_i2c *)i2c_dev[adap->hwadapnr];
+
+ for (i = 0; i < len; i++) {
+ ret = sh_i2c_raw_read(dev, chip, addr + i);
if (ret < 0)
return -1;
- buffer[i] = ret & 0xff;
+
+ data[i] = ret & 0xff;
+ debug("%s: data[%d]: %02x\n", __func__, i, data[i]);
}
+
return 0;
}
-/*
- * i2c_write: - Write multiple bytes to an i2c device
- *
- * The higher level routines take into account that this function is only
- * called with len < page length of the device (see configuration file)
- *
- * @chip: address of the chip which is to be written
- * @addr: i2c data address within the chip
- * @alen: length of the i2c data address (1..2 bytes)
- * @buffer: where to find the data to be written
- * @len: how much byte do we want to read
- * @return: 0 in case of success
- */
-int i2c_write(u8 chip, u32 addr, int alen, u8 *buffer, int len)
+static int sh_i2c_write(struct i2c_adapter *adap, uint8_t chip, uint addr,
+ int alen, u8 *data, int len)
{
- int i = 0;
- for (i = 0; i < len ; i++)
- if (i2c_raw_write(base, chip, addr + i, buffer[i]) != 0)
+ struct sh_i2c *dev = (struct sh_i2c *)i2c_dev[adap->hwadapnr];
+ int i;
+
+ for (i = 0; i < len; i++) {
+ debug("%s: data[%d]: %02x\n", __func__, i, data[i]);
+ if (sh_i2c_raw_write(dev, chip, addr + i, data[i]) != 0)
return -1;
+ }
return 0;
}
-/*
- * i2c_probe: - Test if a chip answers for a given i2c address
- *
- * @chip: address of the chip which is searched for
- * @return: 0 if a chip was found, -1 otherwhise
- */
-int i2c_probe(u8 chip)
+static int
+sh_i2c_probe(struct i2c_adapter *adap, u8 dev)
{
- int ret;
+ return sh_i2c_read(adap, dev, 0, 0, NULL, 0);
+}
- ret = i2c_set_addr(base, chip, 0, 1);
- i2c_finish(base);
- return ret;
+static unsigned int sh_i2c_set_bus_speed(struct i2c_adapter *adap,
+ unsigned int speed)
+{
+ struct sh_i2c *dev = (struct sh_i2c *)i2c_dev[adap->hwadapnr];
+
+ sh_i2c_finish(dev);
+ sh_i2c_init(adap, speed, 0);
+
+ return 0;
}
+
+/*
+ * Register RCAR i2c adapters
+ */
+U_BOOT_I2C_ADAP_COMPLETE(sh_0, sh_i2c_init, sh_i2c_probe, sh_i2c_read,
+ sh_i2c_write, sh_i2c_set_bus_speed, CONFIG_SYS_I2C_SH_SPEED0, 0, 0)
+#ifdef CONFIG_SYS_I2C_SH_BASE1
+U_BOOT_I2C_ADAP_COMPLETE(sh_1, sh_i2c_init, sh_i2c_probe, sh_i2c_read,
+ sh_i2c_write, sh_i2c_set_bus_speed, CONFIG_SYS_I2C_SH_SPEED1, 0, 1)
+#endif
+#ifdef CONFIG_SYS_I2C_SH_BASE2
+U_BOOT_I2C_ADAP_COMPLETE(sh_2, sh_i2c_init, sh_i2c_probe, sh_i2c_read,
+ sh_i2c_write, sh_i2c_set_bus_speed, CONFIG_SYS_I2C_SH_SPEED2, 0, 2)
+#endif
+#ifdef CONFIG_SYS_I2C_SH_BASE3
+U_BOOT_I2C_ADAP_COMPLETE(sh_3, sh_i2c_init, sh_i2c_probe, sh_i2c_read,
+ sh_i2c_write, sh_i2c_set_bus_speed, CONFIG_SYS_I2C_SH_SPEED3, 0, 3)
+#endif
+#ifdef CONFIG_SYS_I2C_SH_BASE4
+U_BOOT_I2C_ADAP_COMPLETE(sh_4, sh_i2c_init, sh_i2c_probe, sh_i2c_read,
+ sh_i2c_write, sh_i2c_set_bus_speed, CONFIG_SYS_I2C_SH_SPEED4, 0, 4)
+#endif
@@ -58,18 +58,17 @@
/* I2C */
#define CONFIG_CMD_I2C
-#define CONFIG_SH_I2C 1
-#define CONFIG_HARD_I2C 1
-#define CONFIG_I2C_MULTI_BUS 1
-#define CONFIG_SYS_MAX_I2C_BUS 2
-#define CONFIG_SYS_I2C_MODULE 1
-#define CONFIG_SYS_I2C_SPEED 100000 /* 100 kHz */
+#define CONFIG_SYS_I2C
+#define CONFIG_SYS_I2C_SH
#define CONFIG_SYS_I2C_SLAVE 0x7F
+#define CONFIG_SYS_I2C_SH_NUM_CONTROLLERS 2
+#define CONFIG_SYS_I2C_SH_BASE0 0xA4470000
+#define CONFIG_SYS_I2C_SH_SPEED0 100000
+#define CONFIG_SYS_I2C_SH_BASE1 0xA4750000
+#define CONFIG_SYS_I2C_SH_SPEED1 100000
#define CONFIG_SH_I2C_DATA_HIGH 4
#define CONFIG_SH_I2C_DATA_LOW 5
#define CONFIG_SH_I2C_CLOCK 41666666
-#define CONFIG_SH_I2C_BASE0 0xA4470000
-#define CONFIG_SH_I2C_BASE1 0xA4750000
/* Ether */
#define CONFIG_SH_ETHER 1
@@ -140,21 +140,22 @@
/* I2C */
#define CONFIG_CMD_I2C
-#define CONFIG_SH_I2C 1
+#define CONFIG_SYS_I2C
+#define CONFIG_SYS_I2C_SH
+#define CONFIG_SYS_I2C_SH_NUM_CONTROLLERS 5
+#define CONFIG_SYS_I2C_SH_BASE0 0xE6820000
+#define CONFIG_SYS_I2C_SH_SPEED0 100000
+#define CONFIG_SYS_I2C_SH_BASE1 0xE6822000
+#define CONFIG_SYS_I2C_SH_SPEED1 100000
+#define CONFIG_SYS_I2C_SH_BASE2 0xE6824000
+#define CONFIG_SYS_I2C_SH_SPEED2 100000
+#define CONFIG_SYS_I2C_SH_BASE3 0xE6826000
+#define CONFIG_SYS_I2C_SH_SPEED3 100000
+#define CONFIG_SYS_I2C_SH_BASE4 0xE6828000
+#define CONFIG_SYS_I2C_SH_SPEED4 100000
#define CONFIG_SH_I2C_8BIT
-#define CONFIG_HARD_I2C
-#define CONFIG_I2C_MULTI_BUS
-#define CONFIG_SYS_MAX_I2C_BUS (5)
-#define CONFIG_SYS_I2C_MODULE
-#define CONFIG_SYS_I2C_SPEED (100000) /* 100 kHz */
-#define CONFIG_SYS_I2C_SLAVE (0x7F)
-#define CONFIG_SH_I2C_DATA_HIGH (4)
-#define CONFIG_SH_I2C_DATA_LOW (5)
-#define CONFIG_SH_I2C_CLOCK (104000000) /* 104 MHz */
-#define CONFIG_SH_I2C_BASE0 (0xE6820000)
-#define CONFIG_SH_I2C_BASE1 (0xE6822000)
-#define CONFIG_SH_I2C_BASE2 (0xE6824000)
-#define CONFIG_SH_I2C_BASE3 (0xE6826000)
-#define CONFIG_SH_I2C_BASE4 (0xE6828000)
+#define CONFIG_SH_I2C_DATA_HIGH 4
+#define CONFIG_SH_I2C_DATA_LOW 5
+#define CONFIG_SH_I2C_CLOCK 104000000 /* 104 MHz */
#endif /* __KZM9G_H */