summaryrefslogtreecommitdiff
path: root/drivers/i2c
diff options
context:
space:
mode:
authorC Nauman <cnauman@diagraph.com>2010-10-26 23:04:31 +0900
committerMinkyu Kang <mk7.kang@samsung.com>2010-10-28 15:35:56 +0900
commitd9abba8254c3e6b9a1d5c2e52c2d8088bbeb520f (patch)
tree7f97ab2012dfa882e65290138379e22de31bf227 /drivers/i2c
parent1628cfc4fe4b2c3caa7e9d5622f0665c54e8ba6e (diff)
Add generic support for samsung s3c2440
This patch adds generic support for the Samsung s3c2440 processor. Global s3c24x0 changes to struct members converting from upper case to lower case. Signed-off-by: Craig Nauman <cnauman@diagraph.com> Cc: kevin.morfitt@fearnside-systems.co.uk Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
Diffstat (limited to 'drivers/i2c')
-rw-r--r--drivers/i2c/s3c24x0_i2c.c102
1 files changed, 51 insertions, 51 deletions
diff --git a/drivers/i2c/s3c24x0_i2c.c b/drivers/i2c/s3c24x0_i2c.c
index c8371cf730..ba6f39bee1 100644
--- a/drivers/i2c/s3c24x0_i2c.c
+++ b/drivers/i2c/s3c24x0_i2c.c
@@ -58,10 +58,10 @@ static int GetI2CSDA(void)
struct s3c24x0_gpio *gpio = s3c24x0_get_base_gpio();
#ifdef CONFIG_S3C2410
- return (readl(&gpio->GPEDAT) & 0x8000) >> 15;
+ return (readl(&gpio->gpedat) & 0x8000) >> 15;
#endif
#ifdef CONFIG_S3C2400
- return (readl(&gpio->PGDAT) & 0x0020) >> 5;
+ return (readl(&gpio->pgdat) & 0x0020) >> 5;
#endif
}
@@ -77,10 +77,10 @@ static void SetI2CSCL(int x)
struct s3c24x0_gpio *gpio = s3c24x0_get_base_gpio();
#ifdef CONFIG_S3C2410
- writel((readl(&gpio->GPEDAT) & ~0x4000) | (x & 1) << 14, &gpio->GPEDAT);
+ writel((readl(&gpio->gpedat) & ~0x4000) | (x & 1) << 14, &gpio->gpedat);
#endif
#ifdef CONFIG_S3C2400
- writel((readl(&gpio->PGDAT) & ~0x0040) | (x & 1) << 6, &gpio->PGDAT);
+ writel((readl(&gpio->pgdat) & ~0x0040) | (x & 1) << 6, &gpio->pgdat);
#endif
}
@@ -90,26 +90,26 @@ static int WaitForXfer(void)
int i;
i = I2C_TIMEOUT * 10000;
- while (!(readl(&i2c->IICCON) & I2CCON_IRPND) && (i > 0)) {
+ while (!(readl(&i2c->iiccon) & I2CCON_IRPND) && (i > 0)) {
udelay(100);
i--;
}
- return (readl(&i2c->IICCON) & I2CCON_IRPND) ? I2C_OK : I2C_NOK_TOUT;
+ return (readl(&i2c->iiccon) & I2CCON_IRPND) ? I2C_OK : I2C_NOK_TOUT;
}
static int IsACK(void)
{
struct s3c24x0_i2c *i2c = s3c24x0_get_base_i2c();
- return !(readl(&i2c->IICSTAT) & I2CSTAT_NACK);
+ return !(readl(&i2c->iicstat) & I2CSTAT_NACK);
}
static void ReadWriteByte(void)
{
struct s3c24x0_i2c *i2c = s3c24x0_get_base_i2c();
- writel(readl(&i2c->IICCON) & ~I2CCON_IRPND, &i2c->IICCON);
+ writel(readl(&i2c->iiccon) & ~I2CCON_IRPND, &i2c->iiccon);
}
void i2c_init(int speed, int slaveadd)
@@ -122,30 +122,30 @@ void i2c_init(int speed, int slaveadd)
/* wait for some time to give previous transfer a chance to finish */
i = I2C_TIMEOUT * 1000;
- while ((readl(&i2c->IICSTAT) && I2CSTAT_BSY) && (i > 0)) {
+ while ((readl(&i2c->iicstat) && I2CSTAT_BSY) && (i > 0)) {
udelay(1000);
i--;
}
- if ((readl(&i2c->IICSTAT) & I2CSTAT_BSY) || GetI2CSDA() == 0) {
+ if ((readl(&i2c->iicstat) & I2CSTAT_BSY) || GetI2CSDA() == 0) {
#ifdef CONFIG_S3C2410
- ulong old_gpecon = readl(&gpio->GPECON);
+ ulong old_gpecon = readl(&gpio->gpecon);
#endif
#ifdef CONFIG_S3C2400
- ulong old_gpecon = readl(&gpio->PGCON);
+ ulong old_gpecon = readl(&gpio->pgcon);
#endif
/* bus still busy probably by (most) previously interrupted
transfer */
#ifdef CONFIG_S3C2410
/* set I2CSDA and I2CSCL (GPE15, GPE14) to GPIO */
- writel((readl(&gpio->GPECON) & ~0xF0000000) | 0x10000000,
- &gpio->GPECON);
+ writel((readl(&gpio->gpecon) & ~0xF0000000) | 0x10000000,
+ &gpio->gpecon);
#endif
#ifdef CONFIG_S3C2400
/* set I2CSDA and I2CSCL (PG5, PG6) to GPIO */
- writel((readl(&gpio->PGCON) & ~0x00003c00) | 0x00001000,
- &gpio->PGCON);
+ writel((readl(&gpio->pgcon) & ~0x00003c00) | 0x00001000,
+ &gpio->pgcon);
#endif
/* toggle I2CSCL until bus idle */
@@ -164,10 +164,10 @@ void i2c_init(int speed, int slaveadd)
/* restore pin functions */
#ifdef CONFIG_S3C2410
- writel(old_gpecon, &gpio->GPECON);
+ writel(old_gpecon, &gpio->gpecon);
#endif
#ifdef CONFIG_S3C2400
- writel(old_gpecon, &gpio->PGCON);
+ writel(old_gpecon, &gpio->pgcon);
#endif
}
@@ -183,13 +183,13 @@ void i2c_init(int speed, int slaveadd)
/* set prescaler, divisor according to freq, also set
* ACKGEN, IRQ */
- writel((div & 0x0F) | 0xA0 | ((pres == 512) ? 0x40 : 0), &i2c->IICCON);
+ 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);
+ writel(0, &i2c->iicstat);
+ writel(slaveadd, &i2c->iicadd);
/* program Master Transmit (and implicit STOP) */
- writel(I2C_MODE_MT | I2C_TXRX_ENA, &i2c->IICSTAT);
+ writel(I2C_MODE_MT | I2C_TXRX_ENA, &i2c->iicstat);
}
@@ -218,47 +218,47 @@ int i2c_transfer(unsigned char cmd_type,
/* Check I2C bus idle */
i = I2C_TIMEOUT * 1000;
- while ((readl(&i2c->IICSTAT) & I2CSTAT_BSY) && (i > 0)) {
+ while ((readl(&i2c->iicstat) & I2CSTAT_BSY) && (i > 0)) {
udelay(1000);
i--;
}
- if (readl(&i2c->IICSTAT) & I2CSTAT_BSY)
+ if (readl(&i2c->iicstat) & I2CSTAT_BSY)
return I2C_NOK_TOUT;
- writel(readl(&i2c->IICCON) | 0x80, &i2c->IICCON);
+ writel(readl(&i2c->iiccon) | 0x80, &i2c->iiccon);
result = I2C_OK;
switch (cmd_type) {
case I2C_WRITE:
if (addr && addr_len) {
- writel(chip, &i2c->IICDS);
+ writel(chip, &i2c->iicds);
/* send START */
writel(I2C_MODE_MT | I2C_TXRX_ENA | I2C_START_STOP,
- &i2c->IICSTAT);
+ &i2c->iicstat);
i = 0;
while ((i < addr_len) && (result == I2C_OK)) {
result = WaitForXfer();
- writel(addr[i], &i2c->IICDS);
+ writel(addr[i], &i2c->iicds);
ReadWriteByte();
i++;
}
i = 0;
while ((i < data_len) && (result == I2C_OK)) {
result = WaitForXfer();
- writel(data[i], &i2c->IICDS);
+ writel(data[i], &i2c->iicds);
ReadWriteByte();
i++;
}
} else {
- writel(chip, &i2c->IICDS);
+ writel(chip, &i2c->iicds);
/* send START */
writel(I2C_MODE_MT | I2C_TXRX_ENA | I2C_START_STOP,
- &i2c->IICSTAT);
+ &i2c->iicstat);
i = 0;
while ((i < data_len) && (result = I2C_OK)) {
result = WaitForXfer();
- writel(data[i], &i2c->IICDS);
+ writel(data[i], &i2c->iicds);
ReadWriteByte();
i++;
}
@@ -268,42 +268,42 @@ int i2c_transfer(unsigned char cmd_type,
result = WaitForXfer();
/* send STOP */
- writel(I2C_MODE_MR | I2C_TXRX_ENA, &i2c->IICSTAT);
+ writel(I2C_MODE_MR | I2C_TXRX_ENA, &i2c->iicstat);
ReadWriteByte();
break;
case I2C_READ:
if (addr && addr_len) {
- writel(I2C_MODE_MT | I2C_TXRX_ENA, &i2c->IICSTAT);
- writel(chip, &i2c->IICDS);
+ writel(I2C_MODE_MT | I2C_TXRX_ENA, &i2c->iicstat);
+ writel(chip, &i2c->iicds);
/* send START */
- writel(readl(&i2c->IICSTAT) | I2C_START_STOP,
- &i2c->IICSTAT);
+ writel(readl(&i2c->iicstat) | I2C_START_STOP,
+ &i2c->iicstat);
result = WaitForXfer();
if (IsACK()) {
i = 0;
while ((i < addr_len) && (result == I2C_OK)) {
- writel(addr[i], &i2c->IICDS);
+ writel(addr[i], &i2c->iicds);
ReadWriteByte();
result = WaitForXfer();
i++;
}
- writel(chip, &i2c->IICDS);
+ writel(chip, &i2c->iicds);
/* resend START */
writel(I2C_MODE_MR | I2C_TXRX_ENA |
- I2C_START_STOP, &i2c->IICSTAT);
+ I2C_START_STOP, &i2c->iicstat);
ReadWriteByte();
result = WaitForXfer();
i = 0;
while ((i < data_len) && (result == I2C_OK)) {
/* disable ACK for final READ */
if (i == data_len - 1)
- writel(readl(&i2c->IICCON)
- & ~0x80, &i2c->IICCON);
+ writel(readl(&i2c->iiccon)
+ & ~0x80, &i2c->iiccon);
ReadWriteByte();
result = WaitForXfer();
- data[i] = readl(&i2c->IICDS);
+ data[i] = readl(&i2c->iicds);
i++;
}
} else {
@@ -311,11 +311,11 @@ int i2c_transfer(unsigned char cmd_type,
}
} else {
- writel(I2C_MODE_MR | I2C_TXRX_ENA, &i2c->IICSTAT);
- writel(chip, &i2c->IICDS);
+ writel(I2C_MODE_MR | I2C_TXRX_ENA, &i2c->iicstat);
+ writel(chip, &i2c->iicds);
/* send START */
- writel(readl(&i2c->IICSTAT) | I2C_START_STOP,
- &i2c->IICSTAT);
+ writel(readl(&i2c->iicstat) | I2C_START_STOP,
+ &i2c->iicstat);
result = WaitForXfer();
if (IsACK()) {
@@ -323,11 +323,11 @@ int i2c_transfer(unsigned char cmd_type,
while ((i < data_len) && (result == I2C_OK)) {
/* disable ACK for final READ */
if (i == data_len - 1)
- writel(readl(&i2c->IICCON) &
- ~0x80, &i2c->IICCON);
+ writel(readl(&i2c->iiccon) &
+ ~0x80, &i2c->iiccon);
ReadWriteByte();
result = WaitForXfer();
- data[i] = readl(&i2c->IICDS);
+ data[i] = readl(&i2c->iicds);
i++;
}
} else {
@@ -336,7 +336,7 @@ int i2c_transfer(unsigned char cmd_type,
}
/* send STOP */
- writel(I2C_MODE_MR | I2C_TXRX_ENA, &i2c->IICSTAT);
+ writel(I2C_MODE_MR | I2C_TXRX_ENA, &i2c->iicstat);
ReadWriteByte();
break;