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authorTom Rini <trini@ti.com>2013-12-10 09:29:45 -0500
committerTom Rini <trini@ti.com>2013-12-10 09:29:45 -0500
commit76a8265b4f54d1b9cd2b70efb46dcdeaa5d20bfb (patch)
tree47ede3d54193de3883adc8ae6bdbf16c1fcab271 /drivers
parent3f56795635ab419d3378451a9291490cfa47f472 (diff)
parente717fc6d1a2b459ae8352f7af5945cc0c216ab1e (diff)
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Merge branch 'master' of git://git.denx.de/u-boot-i2c
Diffstat (limited to 'drivers')
-rw-r--r--drivers/i2c/Makefile2
-rw-r--r--drivers/i2c/fti2c010.c352
-rw-r--r--drivers/i2c/omap24xx_i2c.c6
-rw-r--r--drivers/i2c/s3c24x0_i2c.c284
4 files changed, 393 insertions, 251 deletions
diff --git a/drivers/i2c/Makefile b/drivers/i2c/Makefile
index 553b519..fa3a875 100644
--- a/drivers/i2c/Makefile
+++ b/drivers/i2c/Makefile
@@ -12,7 +12,6 @@ obj-$(CONFIG_I2C_MVTWSI) += mvtwsi.o
obj-$(CONFIG_I2C_MV) += mv_i2c.o
obj-$(CONFIG_I2C_MXS) += mxs_i2c.o
obj-$(CONFIG_PCA9564_I2C) += pca9564_i2c.o
-obj-$(CONFIG_DRIVER_S3C24X0_I2C) += s3c24x0_i2c.o
obj-$(CONFIG_TSI108_I2C) += tsi108_i2c.o
obj-$(CONFIG_U8500_I2C) += u8500_i2c.o
obj-$(CONFIG_SH_SH7734_I2C) += sh_sh7734_i2c.o
@@ -24,6 +23,7 @@ obj-$(CONFIG_SYS_I2C_OMAP24XX) += omap24xx_i2c.o
obj-$(CONFIG_SYS_I2C_OMAP34XX) += omap24xx_i2c.o
obj-$(CONFIG_SYS_I2C_PPC4XX) += ppc4xx_i2c.o
obj-$(CONFIG_SYS_I2C_RCAR) += rcar_i2c.o
+obj-$(CONFIG_SYS_I2C_S3C24X0) += s3c24x0_i2c.o
obj-$(CONFIG_SYS_I2C_SH) += sh_i2c.o
obj-$(CONFIG_SYS_I2C_SOFT) += soft_i2c.o
obj-$(CONFIG_SYS_I2C_TEGRA) += tegra_i2c.o
diff --git a/drivers/i2c/fti2c010.c b/drivers/i2c/fti2c010.c
index ddeb941..fb9fa35 100644
--- a/drivers/i2c/fti2c010.c
+++ b/drivers/i2c/fti2c010.c
@@ -13,67 +13,78 @@
#include "fti2c010.h"
-#ifndef CONFIG_HARD_I2C
-#error "fti2c010: CONFIG_HARD_I2C is not defined"
+#ifndef CONFIG_SYS_I2C_SPEED
+#define CONFIG_SYS_I2C_SPEED 5000
#endif
-#ifndef CONFIG_SYS_I2C_SPEED
-#define CONFIG_SYS_I2C_SPEED 50000
+#ifndef CONFIG_SYS_I2C_SLAVE
+#define CONFIG_SYS_I2C_SLAVE 0
#endif
-#ifndef CONFIG_FTI2C010_FREQ
-#define CONFIG_FTI2C010_FREQ clk_get_rate("I2C")
+#ifndef CONFIG_FTI2C010_CLOCK
+#define CONFIG_FTI2C010_CLOCK clk_get_rate("I2C")
#endif
-/* command timeout */
-#define CFG_CMD_TIMEOUT 10 /* ms */
+#ifndef CONFIG_FTI2C010_TIMEOUT
+#define CONFIG_FTI2C010_TIMEOUT 10 /* ms */
+#endif
-/* 7-bit chip address + 1-bit read/write */
-#define I2C_RD(chip) ((((chip) << 1) & 0xff) | 1)
-#define I2C_WR(chip) (((chip) << 1) & 0xff)
+/* 7-bit dev address + 1-bit read/write */
+#define I2C_RD(dev) ((((dev) << 1) & 0xfe) | 1)
+#define I2C_WR(dev) (((dev) << 1) & 0xfe)
struct fti2c010_chip {
- void __iomem *regs;
- uint bus;
- uint speed;
+ struct fti2c010_regs *regs;
};
static struct fti2c010_chip chip_list[] = {
{
- .bus = 0,
- .regs = (void __iomem *)CONFIG_FTI2C010_BASE,
+ .regs = (struct fti2c010_regs *)CONFIG_FTI2C010_BASE,
},
-#ifdef CONFIG_I2C_MULTI_BUS
-# ifdef CONFIG_FTI2C010_BASE1
+#ifdef CONFIG_FTI2C010_BASE1
{
- .bus = 1,
- .regs = (void __iomem *)CONFIG_FTI2C010_BASE1,
+ .regs = (struct fti2c010_regs *)CONFIG_FTI2C010_BASE1,
},
-# endif
-# ifdef CONFIG_FTI2C010_BASE2
+#endif
+#ifdef CONFIG_FTI2C010_BASE2
{
- .bus = 2,
- .regs = (void __iomem *)CONFIG_FTI2C010_BASE2,
+ .regs = (struct fti2c010_regs *)CONFIG_FTI2C010_BASE2,
},
-# endif
-# ifdef CONFIG_FTI2C010_BASE3
+#endif
+#ifdef CONFIG_FTI2C010_BASE3
{
- .bus = 3,
- .regs = (void __iomem *)CONFIG_FTI2C010_BASE3,
+ .regs = (struct fti2c010_regs *)CONFIG_FTI2C010_BASE3,
},
-# endif
-#endif /* #ifdef CONFIG_I2C_MULTI_BUS */
+#endif
};
-static struct fti2c010_chip *curr = chip_list;
+static int fti2c010_reset(struct fti2c010_chip *chip)
+{
+ ulong ts;
+ int ret = -1;
+ struct fti2c010_regs *regs = chip->regs;
+
+ writel(CR_I2CRST, &regs->cr);
+ for (ts = get_timer(0); get_timer(ts) < CONFIG_FTI2C010_TIMEOUT; ) {
+ if (!(readl(&regs->cr) & CR_I2CRST)) {
+ ret = 0;
+ break;
+ }
+ }
-static int fti2c010_wait(uint32_t mask)
+ if (ret)
+ printf("fti2c010: reset timeout\n");
+
+ return ret;
+}
+
+static int fti2c010_wait(struct fti2c010_chip *chip, uint32_t mask)
{
int ret = -1;
uint32_t stat, ts;
- struct fti2c010_regs *regs = curr->regs;
+ struct fti2c010_regs *regs = chip->regs;
- for (ts = get_timer(0); get_timer(ts) < CFG_CMD_TIMEOUT; ) {
+ for (ts = get_timer(0); get_timer(ts) < CONFIG_FTI2C010_TIMEOUT; ) {
stat = readl(&regs->sr);
if ((stat & mask) == mask) {
ret = 0;
@@ -84,88 +95,124 @@ static int fti2c010_wait(uint32_t mask)
return ret;
}
-/*
- * u-boot I2C API
- */
+static unsigned int set_i2c_bus_speed(struct fti2c010_chip *chip,
+ unsigned int speed)
+{
+ struct fti2c010_regs *regs = chip->regs;
+ unsigned int clk = CONFIG_FTI2C010_CLOCK;
+ unsigned int gsr = 0;
+ unsigned int tsr = 32;
+ unsigned int div, rate;
+
+ for (div = 0; div < 0x3ffff; ++div) {
+ /* SCLout = PCLK/(2*(COUNT + 2) + GSR) */
+ rate = clk / (2 * (div + 2) + gsr);
+ if (rate <= speed)
+ break;
+ }
+
+ writel(TGSR_GSR(gsr) | TGSR_TSR(tsr), &regs->tgsr);
+ writel(CDR_DIV(div), &regs->cdr);
+
+ return rate;
+}
/*
* Initialization, must be called once on start up, may be called
* repeatedly to change the speed and slave addresses.
*/
-void i2c_init(int speed, int slaveaddr)
+static void fti2c010_init(struct i2c_adapter *adap, int speed, int slaveaddr)
{
- if (speed || !curr->speed)
- i2c_set_bus_speed(speed);
+ struct fti2c010_chip *chip = chip_list + adap->hwadapnr;
- /* if slave mode disabled */
- if (!slaveaddr)
+ if (adap->init_done)
return;
- /*
- * TODO:
- * Implement slave mode, but is it really necessary?
- */
+#ifdef CONFIG_SYS_I2C_INIT_BOARD
+ /* Call board specific i2c bus reset routine before accessing the
+ * environment, which might be in a chip on that bus. For details
+ * about this problem see doc/I2C_Edge_Conditions.
+ */
+ i2c_init_board();
+#endif
+
+ /* master init */
+
+ fti2c010_reset(chip);
+
+ set_i2c_bus_speed(chip, speed);
+
+ /* slave init, don't care */
+
+#ifdef CONFIG_SYS_I2C_BOARD_LATE_INIT
+ /* Call board specific i2c bus reset routine AFTER the bus has been
+ * initialized. Use either this callpoint or i2c_init_board;
+ * which is called before fti2c010_init operations.
+ * For details about this problem see doc/I2C_Edge_Conditions.
+ */
+ i2c_board_late_init();
+#endif
}
/*
* Probe the given I2C chip address. Returns 0 if a chip responded,
* not 0 on failure.
*/
-int i2c_probe(uchar chip)
+static int fti2c010_probe(struct i2c_adapter *adap, u8 dev)
{
+ struct fti2c010_chip *chip = chip_list + adap->hwadapnr;
+ struct fti2c010_regs *regs = chip->regs;
int ret;
- struct fti2c010_regs *regs = curr->regs;
-
- i2c_init(0, 0);
/* 1. Select slave device (7bits Address + 1bit R/W) */
- writel(I2C_WR(chip), &regs->dr);
+ writel(I2C_WR(dev), &regs->dr);
writel(CR_ENABLE | CR_TBEN | CR_START, &regs->cr);
- ret = fti2c010_wait(SR_DT);
+ ret = fti2c010_wait(chip, SR_DT);
if (ret)
return ret;
/* 2. Select device register */
writel(0, &regs->dr);
writel(CR_ENABLE | CR_TBEN, &regs->cr);
- ret = fti2c010_wait(SR_DT);
+ ret = fti2c010_wait(chip, SR_DT);
return ret;
}
-/*
- * Read/Write interface:
- * chip: I2C chip address, range 0..127
- * addr: Memory (register) address within the chip
- * alen: Number of bytes to use for addr (typically 1, 2 for larger
- * memories, 0 for register type devices with only one
- * register)
- * buffer: Where to read/write the data
- * len: How many bytes to read/write
- *
- * Returns: 0 on success, not 0 on failure
- */
-int i2c_read(uchar chip, uint addr, int alen, uchar *buf, int len)
+static void to_i2c_addr(u8 *buf, uint32_t addr, int alen)
+{
+ int i, shift;
+
+ if (!buf || alen <= 0)
+ return;
+
+ /* MSB first */
+ i = 0;
+ shift = (alen - 1) * 8;
+ while (alen-- > 0) {
+ buf[i] = (u8)(addr >> shift);
+ shift -= 8;
+ }
+}
+
+static int fti2c010_read(struct i2c_adapter *adap,
+ u8 dev, uint addr, int alen, uchar *buf, int len)
{
+ struct fti2c010_chip *chip = chip_list + adap->hwadapnr;
+ struct fti2c010_regs *regs = chip->regs;
int ret, pos;
uchar paddr[4];
- struct fti2c010_regs *regs = curr->regs;
- i2c_init(0, 0);
-
- paddr[0] = (addr >> 0) & 0xFF;
- paddr[1] = (addr >> 8) & 0xFF;
- paddr[2] = (addr >> 16) & 0xFF;
- paddr[3] = (addr >> 24) & 0xFF;
+ to_i2c_addr(paddr, addr, alen);
/*
* Phase A. Set register address
*/
/* A.1 Select slave device (7bits Address + 1bit R/W) */
- writel(I2C_WR(chip), &regs->dr);
+ writel(I2C_WR(dev), &regs->dr);
writel(CR_ENABLE | CR_TBEN | CR_START, &regs->cr);
- ret = fti2c010_wait(SR_DT);
+ ret = fti2c010_wait(chip, SR_DT);
if (ret)
return ret;
@@ -175,7 +222,7 @@ int i2c_read(uchar chip, uint addr, int alen, uchar *buf, int len)
writel(paddr[pos], &regs->dr);
writel(ctrl, &regs->cr);
- ret = fti2c010_wait(SR_DT);
+ ret = fti2c010_wait(chip, SR_DT);
if (ret)
return ret;
}
@@ -185,9 +232,9 @@ int i2c_read(uchar chip, uint addr, int alen, uchar *buf, int len)
*/
/* B.1 Select slave device (7bits Address + 1bit R/W) */
- writel(I2C_RD(chip), &regs->dr);
+ writel(I2C_RD(dev), &regs->dr);
writel(CR_ENABLE | CR_TBEN | CR_START, &regs->cr);
- ret = fti2c010_wait(SR_DT);
+ ret = fti2c010_wait(chip, SR_DT);
if (ret)
return ret;
@@ -201,7 +248,7 @@ int i2c_read(uchar chip, uint addr, int alen, uchar *buf, int len)
stat |= SR_ACK;
}
writel(ctrl, &regs->cr);
- ret = fti2c010_wait(stat);
+ ret = fti2c010_wait(chip, stat);
if (ret)
break;
buf[pos] = (uchar)(readl(&regs->dr) & 0xFF);
@@ -210,39 +257,24 @@ int i2c_read(uchar chip, uint addr, int alen, uchar *buf, int len)
return ret;
}
-/*
- * Read/Write interface:
- * chip: I2C chip address, range 0..127
- * addr: Memory (register) address within the chip
- * alen: Number of bytes to use for addr (typically 1, 2 for larger
- * memories, 0 for register type devices with only one
- * register)
- * buffer: Where to read/write the data
- * len: How many bytes to read/write
- *
- * Returns: 0 on success, not 0 on failure
- */
-int i2c_write(uchar chip, uint addr, int alen, uchar *buf, int len)
+static int fti2c010_write(struct i2c_adapter *adap,
+ u8 dev, uint addr, int alen, u8 *buf, int len)
{
+ struct fti2c010_chip *chip = chip_list + adap->hwadapnr;
+ struct fti2c010_regs *regs = chip->regs;
int ret, pos;
uchar paddr[4];
- struct fti2c010_regs *regs = curr->regs;
- i2c_init(0, 0);
-
- paddr[0] = (addr >> 0) & 0xFF;
- paddr[1] = (addr >> 8) & 0xFF;
- paddr[2] = (addr >> 16) & 0xFF;
- paddr[3] = (addr >> 24) & 0xFF;
+ to_i2c_addr(paddr, addr, alen);
/*
* Phase A. Set register address
*
* A.1 Select slave device (7bits Address + 1bit R/W)
*/
- writel(I2C_WR(chip), &regs->dr);
+ writel(I2C_WR(dev), &regs->dr);
writel(CR_ENABLE | CR_TBEN | CR_START, &regs->cr);
- ret = fti2c010_wait(SR_DT);
+ ret = fti2c010_wait(chip, SR_DT);
if (ret)
return ret;
@@ -252,7 +284,7 @@ int i2c_write(uchar chip, uint addr, int alen, uchar *buf, int len)
writel(paddr[pos], &regs->dr);
writel(ctrl, &regs->cr);
- ret = fti2c010_wait(SR_DT);
+ ret = fti2c010_wait(chip, SR_DT);
if (ret)
return ret;
}
@@ -267,7 +299,7 @@ int i2c_write(uchar chip, uint addr, int alen, uchar *buf, int len)
ctrl |= CR_STOP;
writel(buf[pos], &regs->dr);
writel(ctrl, &regs->cr);
- ret = fti2c010_wait(SR_DT);
+ ret = fti2c010_wait(chip, SR_DT);
if (ret)
break;
}
@@ -275,94 +307,40 @@ int i2c_write(uchar chip, uint addr, int alen, uchar *buf, int len)
return ret;
}
-/*
- * Functions for setting the current I2C bus and its speed
- */
-#ifdef CONFIG_I2C_MULTI_BUS
-
-/*
- * i2c_set_bus_num:
- *
- * Change the active I2C bus. Subsequent read/write calls will
- * go to this one.
- *
- * bus - bus index, zero based
- *
- * Returns: 0 on success, not 0 on failure
- */
-int i2c_set_bus_num(uint bus)
-{
- if (bus >= ARRAY_SIZE(chip_list))
- return -1;
- curr = chip_list + bus;
- i2c_init(0, 0);
- return 0;
-}
-
-/*
- * i2c_get_bus_num:
- *
- * Returns index of currently active I2C bus. Zero-based.
- */
-
-uint i2c_get_bus_num(void)
-{
- return curr->bus;
-}
-
-#endif /* #ifdef CONFIG_I2C_MULTI_BUS */
-
-/*
- * i2c_set_bus_speed:
- *
- * Change the speed of the active I2C bus
- *
- * speed - bus speed in Hz
- *
- * Returns: 0 on success, not 0 on failure
- */
-int i2c_set_bus_speed(uint speed)
+static unsigned int fti2c010_set_bus_speed(struct i2c_adapter *adap,
+ unsigned int speed)
{
- struct fti2c010_regs *regs = curr->regs;
- uint clk = CONFIG_FTI2C010_FREQ;
- uint gsr = 0, tsr = 32;
- uint spd, div;
-
- if (!speed)
- speed = CONFIG_SYS_I2C_SPEED;
-
- for (div = 0; div < 0x3ffff; ++div) {
- /* SCLout = PCLK/(2*(COUNT + 2) + GSR) */
- spd = clk / (2 * (div + 2) + gsr);
- if (spd <= speed)
- break;
- }
-
- if (curr->speed == spd)
- return 0;
-
- writel(CR_I2CRST, &regs->cr);
- mdelay(100);
- if (readl(&regs->cr) & CR_I2CRST) {
- printf("fti2c010: reset timeout\n");
- return -1;
- }
+ struct fti2c010_chip *chip = chip_list + adap->hwadapnr;
+ int ret;
- curr->speed = spd;
+ fti2c010_reset(chip);
+ ret = set_i2c_bus_speed(chip, speed);
- writel(TGSR_GSR(gsr) | TGSR_TSR(tsr), &regs->tgsr);
- writel(CDR_DIV(div), &regs->cdr);
-
- return 0;
+ return ret;
}
/*
- * i2c_get_bus_speed:
- *
- * Returns speed of currently active I2C bus in Hz
+ * Register i2c adapters
*/
-
-uint i2c_get_bus_speed(void)
-{
- return curr->speed;
-}
+U_BOOT_I2C_ADAP_COMPLETE(i2c_0, fti2c010_init, fti2c010_probe, fti2c010_read,
+ fti2c010_write, fti2c010_set_bus_speed,
+ CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE,
+ 0)
+#ifdef CONFIG_FTI2C010_BASE1
+U_BOOT_I2C_ADAP_COMPLETE(i2c_1, fti2c010_init, fti2c010_probe, fti2c010_read,
+ fti2c010_write, fti2c010_set_bus_speed,
+ CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE,
+ 1)
+#endif
+#ifdef CONFIG_FTI2C010_BASE2
+U_BOOT_I2C_ADAP_COMPLETE(i2c_2, fti2c010_init, fti2c010_probe, fti2c010_read,
+ fti2c010_write, fti2c010_set_bus_speed,
+ CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE,
+ 2)
+#endif
+#ifdef CONFIG_FTI2C010_BASE3
+U_BOOT_I2C_ADAP_COMPLETE(i2c_3, fti2c010_init, fti2c010_probe, fti2c010_read,
+ fti2c010_write, fti2c010_set_bus_speed,
+ CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE,
+ 3)
+#endif
diff --git a/drivers/i2c/omap24xx_i2c.c b/drivers/i2c/omap24xx_i2c.c
index 3d38c03..c784004 100644
--- a/drivers/i2c/omap24xx_i2c.c
+++ b/drivers/i2c/omap24xx_i2c.c
@@ -158,7 +158,6 @@ static void omap24_i2c_init(struct i2c_adapter *adap, int speed, int slaveadd)
udelay(1000);
flush_fifo(adap);
writew(0xFFFF, &i2c_base->stat);
- writew(0, &i2c_base->cnt);
}
static void flush_fifo(struct i2c_adapter *adap)
@@ -198,8 +197,6 @@ static int omap24_i2c_probe(struct i2c_adapter *adap, uchar chip)
return res;
/* No data transfer, slave addr only */
- writew(0, &i2c_base->cnt);
- /* Set slave address */
writew(chip, &i2c_base->sa);
/* Stop bit needed here */
writew(I2C_CON_EN | I2C_CON_MST | I2C_CON_STT | I2C_CON_TRX |
@@ -234,7 +231,6 @@ static int omap24_i2c_probe(struct i2c_adapter *adap, uchar chip)
pr_exit:
flush_fifo(adap);
writew(0xFFFF, &i2c_base->stat);
- writew(0, &i2c_base->cnt);
return res;
}
@@ -372,7 +368,6 @@ static int omap24_i2c_read(struct i2c_adapter *adap, uchar chip, uint addr,
rd_exit:
flush_fifo(adap);
writew(0xFFFF, &i2c_base->stat);
- writew(0, &i2c_base->cnt);
return i2c_error;
}
@@ -473,7 +468,6 @@ static int omap24_i2c_write(struct i2c_adapter *adap, uchar chip, uint addr,
wr_exit:
flush_fifo(adap);
writew(0xFFFF, &i2c_base->stat);
- writew(0, &i2c_base->cnt);
return i2c_error;
}
diff --git a/drivers/i2c/s3c24x0_i2c.c b/drivers/i2c/s3c24x0_i2c.c
index f77a9d1..fd328f0 100644
--- a/drivers/i2c/s3c24x0_i2c.c
+++ b/drivers/i2c/s3c24x0_i2c.c
@@ -23,8 +23,6 @@
#include <i2c.h>
#include "s3c24x0_i2c.h"
-#ifdef CONFIG_HARD_I2C
-
#define I2C_WRITE 0
#define I2C_READ 1
@@ -127,7 +125,6 @@
* For SPL boot some boards need i2c before SDRAM is initialised so force
* variables to live in SRAM
*/
-static unsigned int g_current_bus __attribute__((section(".data")));
static struct s3c24x0_i2c_bus i2c_bus[CONFIG_MAX_I2C_NUM]
__attribute__((section(".data")));
@@ -254,17 +251,17 @@ static void ReadWriteByte(struct s3c24x0_i2c *i2c)
writel(readl(&i2c->iiccon) & ~I2CCON_IRPND, &i2c->iiccon);
}
-static struct s3c24x0_i2c *get_base_i2c(void)
+static struct s3c24x0_i2c *get_base_i2c(int bus)
{
#ifdef CONFIG_EXYNOS4
struct s3c24x0_i2c *i2c = (struct s3c24x0_i2c *)(samsung_get_base_i2c()
+ (EXYNOS4_I2C_SPACING
- * g_current_bus));
+ * bus));
return i2c;
#elif defined CONFIG_EXYNOS5
struct s3c24x0_i2c *i2c = (struct s3c24x0_i2c *)(samsung_get_base_i2c()
+ (EXYNOS5_I2C_SPACING
- * g_current_bus));
+ * bus));
return i2c;
#else
return s3c24x0_get_base_i2c();
@@ -298,7 +295,6 @@ static void i2c_ch_init(struct s3c24x0_i2c *i2c, int speed, int slaveadd)
writel(I2C_MODE_MT | I2C_TXRX_ENA, &i2c->iicstat);
}
-#ifdef CONFIG_I2C_MULTI_BUS
static int hsi2c_get_clk_details(struct s3c24x0_i2c_bus *i2c_bus)
{
struct exynos5_hsi2c *hsregs = i2c_bus->hsregs;
@@ -307,8 +303,10 @@ static int hsi2c_get_clk_details(struct s3c24x0_i2c_bus *i2c_bus)
unsigned int i = 0, utemp0 = 0, utemp1 = 0;
unsigned int t_ftl_cycle;
-#if defined CONFIG_EXYNOS5
+#if (defined CONFIG_EXYNOS4 || defined CONFIG_EXYNOS5)
clkin = get_i2c_clk();
+#else
+ clkin = get_PCLK();
#endif
/* FPCLK / FI2C =
* (CLK_DIV + 1) * (TSCLK_L + TSCLK_H + 2) + 8 + 2 * FLT_CYCLE
@@ -330,7 +328,6 @@ static int hsi2c_get_clk_details(struct s3c24x0_i2c_bus *i2c_bus)
}
return -1;
}
-#endif
static void hsi2c_ch_init(struct s3c24x0_i2c_bus *i2c_bus)
{
@@ -401,49 +398,18 @@ static void exynos5_i2c_reset(struct s3c24x0_i2c_bus *i2c_bus)
hsi2c_ch_init(i2c_bus);
}
-/*
- * MULTI BUS I2C support
- */
-
-#ifdef CONFIG_I2C_MULTI_BUS
-int i2c_set_bus_num(unsigned int bus)
-{
- struct s3c24x0_i2c_bus *i2c_bus;
-
- i2c_bus = get_bus(bus);
- if (!i2c_bus)
- return -1;
- g_current_bus = bus;
-
- if (i2c_bus->is_highspeed) {
- if (hsi2c_get_clk_details(i2c_bus))
- return -1;
- hsi2c_ch_init(i2c_bus);
- } else {
- i2c_ch_init(i2c_bus->regs, i2c_bus->clock_frequency,
- CONFIG_SYS_I2C_SLAVE);
- }
-
- return 0;
-}
-
-unsigned int i2c_get_bus_num(void)
-{
- return g_current_bus;
-}
-#endif
-
-void i2c_init(int speed, int slaveadd)
+static void s3c24x0_i2c_init(struct i2c_adapter *adap, int speed, int slaveadd)
{
struct s3c24x0_i2c *i2c;
+ struct s3c24x0_i2c_bus *bus;
+
#if !(defined CONFIG_EXYNOS4 || defined CONFIG_EXYNOS5)
struct s3c24x0_gpio *gpio = s3c24x0_get_base_gpio();
#endif
ulong start_time = get_timer(0);
/* By default i2c channel 0 is the current bus */
- g_current_bus = 0;
- i2c = get_base_i2c();
+ i2c = get_base_i2c(adap->hwadapnr);
/*
* In case the previous transfer is still going, wait to give it a
@@ -505,6 +471,10 @@ void i2c_init(int speed, int slaveadd)
}
#endif /* #if !(defined CONFIG_EXYNOS4 || defined CONFIG_EXYNOS5) */
i2c_ch_init(i2c, speed, slaveadd);
+
+ bus = &i2c_bus[adap->hwadapnr];
+ bus->active = true;
+ bus->regs = i2c;
}
/*
@@ -728,6 +698,40 @@ static int hsi2c_read(struct exynos5_hsi2c *i2c,
return rv;
}
+static unsigned int s3c24x0_i2c_set_bus_speed(struct i2c_adapter *adap,
+ unsigned int speed)
+{
+ struct s3c24x0_i2c_bus *i2c_bus;
+
+ i2c_bus = get_bus(adap->hwadapnr);
+ if (!i2c_bus)
+ return -1;
+
+ i2c_bus->clock_frequency = speed;
+
+ if (i2c_bus->is_highspeed) {
+ if (hsi2c_get_clk_details(i2c_bus))
+ return -1;
+ hsi2c_ch_init(i2c_bus);
+ } else {
+ i2c_ch_init(i2c_bus->regs, i2c_bus->clock_frequency,
+ CONFIG_SYS_I2C_S3C24X0_SLAVE);
+ }
+
+ return 0;
+}
+
+#ifdef CONFIG_EXYNOS5
+static void exynos_i2c_init(struct i2c_adapter *adap, int speed, int slaveaddr)
+{
+ /* This will override the speed selected in the fdt for that port */
+ debug("i2c_init(speed=%u, slaveaddr=0x%x)\n", speed, slaveaddr);
+ if (i2c_set_bus_speed(speed))
+ printf("i2c_init: failed to init bus %d for speed = %d\n",
+ adap->hwadapnr, speed);
+}
+#endif
+
/*
* cmd_type is 0 for write, 1 for read.
*
@@ -840,13 +844,13 @@ bailout:
return result;
}
-int i2c_probe(uchar chip)
+static int s3c24x0_i2c_probe(struct i2c_adapter *adap, uchar chip)
{
struct s3c24x0_i2c_bus *i2c_bus;
uchar buf[1];
int ret;
- i2c_bus = get_bus(g_current_bus);
+ i2c_bus = get_bus(adap->hwadapnr);
if (!i2c_bus)
return -1;
buf[0] = 0;
@@ -864,11 +868,11 @@ int i2c_probe(uchar chip)
I2C_READ, chip << 1, 0, 0, buf, 1);
}
-
return ret != I2C_OK;
}
-int i2c_read(uchar chip, uint addr, int alen, uchar *buffer, int len)
+static int s3c24x0_i2c_read(struct i2c_adapter *adap, uchar chip, uint addr,
+ int alen, uchar *buffer, int len)
{
struct s3c24x0_i2c_bus *i2c_bus;
uchar xaddr[4];
@@ -902,7 +906,7 @@ int i2c_read(uchar chip, uint addr, int alen, uchar *buffer, int len)
chip |= ((addr >> (alen * 8)) &
CONFIG_SYS_I2C_EEPROM_ADDR_OVERFLOW);
#endif
- i2c_bus = get_bus(g_current_bus);
+ i2c_bus = get_bus(adap->hwadapnr);
if (!i2c_bus)
return -1;
@@ -922,7 +926,8 @@ int i2c_read(uchar chip, uint addr, int alen, uchar *buffer, int len)
return 0;
}
-int i2c_write(uchar chip, uint addr, int alen, uchar *buffer, int len)
+static int s3c24x0_i2c_write(struct i2c_adapter *adap, uchar chip, uint addr,
+ int alen, uchar *buffer, int len)
{
struct s3c24x0_i2c_bus *i2c_bus;
uchar xaddr[4];
@@ -955,7 +960,7 @@ int i2c_write(uchar chip, uint addr, int alen, uchar *buffer, int len)
chip |= ((addr >> (alen * 8)) &
CONFIG_SYS_I2C_EEPROM_ADDR_OVERFLOW);
#endif
- i2c_bus = get_bus(g_current_bus);
+ i2c_bus = get_bus(adap->hwadapnr);
if (!i2c_bus)
return -1;
@@ -1001,8 +1006,8 @@ static void process_nodes(const void *blob, int node_list[], int count,
bus->id = pinmux_decode_periph_id(blob, node);
bus->clock_frequency = fdtdec_get_int(blob, node,
- "clock-frequency",
- CONFIG_SYS_I2C_SPEED);
+ "clock-frequency",
+ CONFIG_SYS_I2C_S3C24X0_SPEED);
bus->node = node;
bus->bus_num = i;
exynos_pinmux_config(bus->id, 0);
@@ -1044,7 +1049,6 @@ int i2c_get_bus_num_fdt(int node)
return -1;
}
-#ifdef CONFIG_I2C_MULTI_BUS
int i2c_reset_port_fdt(const void *blob, int node)
{
struct s3c24x0_i2c_bus *i2c_bus;
@@ -1068,12 +1072,178 @@ int i2c_reset_port_fdt(const void *blob, int node)
hsi2c_ch_init(i2c_bus);
} else {
i2c_ch_init(i2c_bus->regs, i2c_bus->clock_frequency,
- CONFIG_SYS_I2C_SLAVE);
+ CONFIG_SYS_I2C_S3C24X0_SLAVE);
}
return 0;
}
#endif
-#endif
-#endif /* CONFIG_HARD_I2C */
+/*
+ * Register s3c24x0 i2c adapters
+ */
+#if defined(CONFIG_EXYNOS5420)
+U_BOOT_I2C_ADAP_COMPLETE(i2c00, s3c24x0_i2c_init, s3c24x0_i2c_probe,
+ s3c24x0_i2c_read, s3c24x0_i2c_write,
+ s3c24x0_i2c_set_bus_speed,
+ CONFIG_SYS_I2C_S3C24X0_SPEED,
+ CONFIG_SYS_I2C_S3C24X0_SLAVE, 0)
+U_BOOT_I2C_ADAP_COMPLETE(i2c01, s3c24x0_i2c_init, s3c24x0_i2c_probe,
+ s3c24x0_i2c_read, s3c24x0_i2c_write,
+ s3c24x0_i2c_set_bus_speed,
+ CONFIG_SYS_I2C_S3C24X0_SPEED,
+ CONFIG_SYS_I2C_S3C24X0_SLAVE, 1)
+U_BOOT_I2C_ADAP_COMPLETE(i2c02, s3c24x0_i2c_init, s3c24x0_i2c_probe,
+ s3c24x0_i2c_read, s3c24x0_i2c_write,
+ s3c24x0_i2c_set_bus_speed,
+ CONFIG_SYS_I2C_S3C24X0_SPEED,
+ CONFIG_SYS_I2C_S3C24X0_SLAVE, 2)
+U_BOOT_I2C_ADAP_COMPLETE(i2c03, exynos_i2c_init, s3c24x0_i2c_probe,
+ s3c24x0_i2c_read, s3c24x0_i2c_write,
+ s3c24x0_i2c_set_bus_speed,
+ CONFIG_SYS_I2C_S3C24X0_SPEED,
+ CONFIG_SYS_I2C_S3C24X0_SLAVE, 3)
+U_BOOT_I2C_ADAP_COMPLETE(i2c04, exynos_i2c_init, s3c24x0_i2c_probe,
+ s3c24x0_i2c_read, s3c24x0_i2c_write,
+ s3c24x0_i2c_set_bus_speed,
+ CONFIG_SYS_I2C_S3C24X0_SPEED,
+ CONFIG_SYS_I2C_S3C24X0_SLAVE, 4)
+U_BOOT_I2C_ADAP_COMPLETE(i2c05, exynos_i2c_init, s3c24x0_i2c_probe,
+ s3c24x0_i2c_read, s3c24x0_i2c_write,
+ s3c24x0_i2c_set_bus_speed,
+ CONFIG_SYS_I2C_S3C24X0_SPEED,
+ CONFIG_SYS_I2C_S3C24X0_SLAVE, 5)
+U_BOOT_I2C_ADAP_COMPLETE(i2c06, exynos_i2c_init, s3c24x0_i2c_probe,
+ s3c24x0_i2c_read, s3c24x0_i2c_write,
+ s3c24x0_i2c_set_bus_speed,
+ CONFIG_SYS_I2C_S3C24X0_SPEED,
+ CONFIG_SYS_I2C_S3C24X0_SLAVE, 6)
+U_BOOT_I2C_ADAP_COMPLETE(i2c07, exynos_i2c_init, s3c24x0_i2c_probe,
+ s3c24x0_i2c_read, s3c24x0_i2c_write,
+ s3c24x0_i2c_set_bus_speed,
+ CONFIG_SYS_I2C_S3C24X0_SPEED,
+ CONFIG_SYS_I2C_S3C24X0_SLAVE, 7)
+U_BOOT_I2C_ADAP_COMPLETE(i2c08, exynos_i2c_init, s3c24x0_i2c_probe,
+ s3c24x0_i2c_read, s3c24x0_i2c_write,
+ s3c24x0_i2c_set_bus_speed,
+ CONFIG_SYS_I2C_S3C24X0_SPEED,
+ CONFIG_SYS_I2C_S3C24X0_SLAVE, 8)
+U_BOOT_I2C_ADAP_COMPLETE(i2c09, exynos_i2c_init, s3c24x0_i2c_probe,
+ s3c24x0_i2c_read, s3c24x0_i2c_write,
+ s3c24x0_i2c_set_bus_speed,
+ CONFIG_SYS_I2C_S3C24X0_SPEED,
+ CONFIG_SYS_I2C_S3C24X0_SLAVE, 9)
+U_BOOT_I2C_ADAP_COMPLETE(i2c10, exynos_i2c_init, s3c24x0_i2c_probe,
+ s3c24x0_i2c_read, s3c24x0_i2c_write,
+ s3c24x0_i2c_set_bus_speed,
+ CONFIG_SYS_I2C_S3C24X0_SPEED,
+ CONFIG_SYS_I2C_S3C24X0_SLAVE, 10)
+#elif defined(CONFIG_EXYNOS5250)
+U_BOOT_I2C_ADAP_COMPLETE(i2c00, exynos_i2c_init, s3c24x0_i2c_probe,
+ s3c24x0_i2c_read, s3c24x0_i2c_write,
+ s3c24x0_i2c_set_bus_speed,
+ CONFIG_SYS_I2C_S3C24X0_SPEED,
+ CONFIG_SYS_I2C_S3C24X0_SLAVE, 0)
+U_BOOT_I2C_ADAP_COMPLETE(i2c01, exynos_i2c_init, s3c24x0_i2c_probe,
+ s3c24x0_i2c_read, s3c24x0_i2c_write,
+ s3c24x0_i2c_set_bus_speed,
+ CONFIG_SYS_I2C_S3C24X0_SPEED,
+ CONFIG_SYS_I2C_S3C24X0_SLAVE, 1)
+U_BOOT_I2C_ADAP_COMPLETE(i2c02, exynos_i2c_init, s3c24x0_i2c_probe,
+ s3c24x0_i2c_read, s3c24x0_i2c_write,
+ s3c24x0_i2c_set_bus_speed,
+ CONFIG_SYS_I2C_S3C24X0_SPEED,
+ CONFIG_SYS_I2C_S3C24X0_SLAVE, 2)
+U_BOOT_I2C_ADAP_COMPLETE(i2c03, exynos_i2c_init, s3c24x0_i2c_probe,
+ s3c24x0_i2c_read, s3c24x0_i2c_write,
+ s3c24x0_i2c_set_bus_speed,
+ CONFIG_SYS_I2C_S3C24X0_SPEED,
+ CONFIG_SYS_I2C_S3C24X0_SLAVE, 3)
+U_BOOT_I2C_ADAP_COMPLETE(i2c04, s3c24x0_i2c_init, s3c24x0_i2c_probe,
+ s3c24x0_i2c_read, s3c24x0_i2c_write,
+ s3c24x0_i2c_set_bus_speed,
+ CONFIG_SYS_I2C_S3C24X0_SPEED,
+ CONFIG_SYS_I2C_S3C24X0_SLAVE, 4)
+U_BOOT_I2C_ADAP_COMPLETE(i2c05, s3c24x0_i2c_init, s3c24x0_i2c_probe,
+ s3c24x0_i2c_read, s3c24x0_i2c_write,
+ s3c24x0_i2c_set_bus_speed,
+ CONFIG_SYS_I2C_S3C24X0_SPEED,
+ CONFIG_SYS_I2C_S3C24X0_SLAVE, 5)
+U_BOOT_I2C_ADAP_COMPLETE(i2c06, s3c24x0_i2c_init, s3c24x0_i2c_probe,
+ s3c24x0_i2c_read, s3c24x0_i2c_write,
+ s3c24x0_i2c_set_bus_speed,
+ CONFIG_SYS_I2C_S3C24X0_SPEED,
+ CONFIG_SYS_I2C_S3C24X0_SLAVE, 6)
+U_BOOT_I2C_ADAP_COMPLETE(i2c07, s3c24x0_i2c_init, s3c24x0_i2c_probe,
+ s3c24x0_i2c_read, s3c24x0_i2c_write,
+ s3c24x0_i2c_set_bus_speed,
+ CONFIG_SYS_I2C_S3C24X0_SPEED,
+ CONFIG_SYS_I2C_S3C24X0_SLAVE, 7)
+U_BOOT_I2C_ADAP_COMPLETE(i2c08, s3c24x0_i2c_init, s3c24x0_i2c_probe,
+ s3c24x0_i2c_read, s3c24x0_i2c_write,
+ s3c24x0_i2c_set_bus_speed,
+ CONFIG_SYS_I2C_S3C24X0_SPEED,
+ CONFIG_SYS_I2C_S3C24X0_SLAVE, 8)
+U_BOOT_I2C_ADAP_COMPLETE(i2c09, s3c24x0_i2c_init, s3c24x0_i2c_probe,
+ s3c24x0_i2c_read, s3c24x0_i2c_write,
+ s3c24x0_i2c_set_bus_speed,
+ CONFIG_SYS_I2C_S3C24X0_SPEED,
+ CONFIG_SYS_I2C_S3C24X0_SLAVE, 9)
+U_BOOT_I2C_ADAP_COMPLETE(s3c10, s3c24x0_i2c_init, s3c24x0_i2c_probe,
+ s3c24x0_i2c_read, s3c24x0_i2c_write,
+ s3c24x0_i2c_set_bus_speed,
+ CONFIG_SYS_I2C_S3C24X0_SPEED,
+ CONFIG_SYS_I2C_S3C24X0_SLAVE, 10)
+#elif defined(CONFIG_EXYNOS4)
+U_BOOT_I2C_ADAP_COMPLETE(i2c00, s3c24x0_i2c_init, s3c24x0_i2c_probe,
+ s3c24x0_i2c_read, s3c24x0_i2c_write,
+ s3c24x0_i2c_set_bus_speed,
+ CONFIG_SYS_I2C_S3C24X0_SPEED,
+ CONFIG_SYS_I2C_S3C24X0_SLAVE, 0)
+U_BOOT_I2C_ADAP_COMPLETE(i2c01, s3c24x0_i2c_init, s3c24x0_i2c_probe,
+ s3c24x0_i2c_read, s3c24x0_i2c_write,
+ s3c24x0_i2c_set_bus_speed,
+ CONFIG_SYS_I2C_S3C24X0_SPEED,
+ CONFIG_SYS_I2C_S3C24X0_SLAVE, 1)
+U_BOOT_I2C_ADAP_COMPLETE(i2c02, s3c24x0_i2c_init, s3c24x0_i2c_probe,
+ s3c24x0_i2c_read, s3c24x0_i2c_write,
+ s3c24x0_i2c_set_bus_speed,
+ CONFIG_SYS_I2C_S3C24X0_SPEED,
+ CONFIG_SYS_I2C_S3C24X0_SLAVE, 2)
+U_BOOT_I2C_ADAP_COMPLETE(i2c03, s3c24x0_i2c_init, s3c24x0_i2c_probe,
+ s3c24x0_i2c_read, s3c24x0_i2c_write,
+ s3c24x0_i2c_set_bus_speed,
+ CONFIG_SYS_I2C_S3C24X0_SPEED,
+ CONFIG_SYS_I2C_S3C24X0_SLAVE, 3)
+U_BOOT_I2C_ADAP_COMPLETE(i2c04, s3c24x0_i2c_init, s3c24x0_i2c_probe,
+ s3c24x0_i2c_read, s3c24x0_i2c_write,
+ s3c24x0_i2c_set_bus_speed,
+ CONFIG_SYS_I2C_S3C24X0_SPEED,
+ CONFIG_SYS_I2C_S3C24X0_SLAVE, 4)
+U_BOOT_I2C_ADAP_COMPLETE(i2c05, s3c24x0_i2c_init, s3c24x0_i2c_probe,
+ s3c24x0_i2c_read, s3c24x0_i2c_write,
+ s3c24x0_i2c_set_bus_speed,
+ CONFIG_SYS_I2C_S3C24X0_SPEED,
+ CONFIG_SYS_I2C_S3C24X0_SLAVE, 5)
+U_BOOT_I2C_ADAP_COMPLETE(i2c06, s3c24x0_i2c_init, s3c24x0_i2c_probe,
+ s3c24x0_i2c_read, s3c24x0_i2c_write,
+ s3c24x0_i2c_set_bus_speed,
+ CONFIG_SYS_I2C_S3C24X0_SPEED,
+ CONFIG_SYS_I2C_S3C24X0_SLAVE, 6)
+U_BOOT_I2C_ADAP_COMPLETE(i2c07, s3c24x0_i2c_init, s3c24x0_i2c_probe,
+ s3c24x0_i2c_read, s3c24x0_i2c_write,
+ s3c24x0_i2c_set_bus_speed,
+ CONFIG_SYS_I2C_S3C24X0_SPEED,
+ CONFIG_SYS_I2C_S3C24X0_SLAVE, 7)
+U_BOOT_I2C_ADAP_COMPLETE(i2c08, s3c24x0_i2c_init, s3c24x0_i2c_probe,
+ s3c24x0_i2c_read, s3c24x0_i2c_write,
+ s3c24x0_i2c_set_bus_speed,
+ CONFIG_SYS_I2C_S3C24X0_SPEED,
+ CONFIG_SYS_I2C_S3C24X0_SLAVE, 8)
+#else
+U_BOOT_I2C_ADAP_COMPLETE(s3c0, s3c24x0_i2c_init, s3c24x0_i2c_probe,
+ s3c24x0_i2c_read, s3c24x0_i2c_write,
+ s3c24x0_i2c_set_bus_speed,
+ CONFIG_SYS_I2C_S3C24X0_SPEED,
+ CONFIG_SYS_I2C_S3C24X0_SLAVE, 0)
+#endif