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| author | Patil, Rachna <rachna@ti.com> | 2012-01-22 23:46:23 +0000 |
|---|---|---|
| committer | Heiko Schocher <hs@denx.de> | 2012-01-23 11:57:31 +0100 |
| commit | 498cbdfe62a8330f6c89765bdd15e60328a26511 (patch) | |
| tree | 75aba11ac162f8f19009d1bbde35895a665024b4 /drivers/i2c | |
| parent | 2faa76196af4b3e93bcb9e38ed9090cbd3b06db3 (diff) | |
| download | u-boot-imx-498cbdfe62a8330f6c89765bdd15e60328a26511.zip u-boot-imx-498cbdfe62a8330f6c89765bdd15e60328a26511.tar.gz u-boot-imx-498cbdfe62a8330f6c89765bdd15e60328a26511.tar.bz2 | |
ARM: AM33XX: Add AM33XX I2C driver support
1. Compliant with Philips I2C specification version 2.1
2. Supports upto 100Kbps in standard mode
Signed-off-by: Chandan Nath <chandan.nath@ti.com>
Signed-off-by: Patil, Rachna <rachna@ti.com>
Diffstat (limited to 'drivers/i2c')
| -rw-r--r-- | drivers/i2c/omap24xx_i2c.c | 20 |
1 files changed, 13 insertions, 7 deletions
diff --git a/drivers/i2c/omap24xx_i2c.c b/drivers/i2c/omap24xx_i2c.c index 80932ef..f06af02 100644 --- a/drivers/i2c/omap24xx_i2c.c +++ b/drivers/i2c/omap24xx_i2c.c @@ -147,7 +147,7 @@ static void flush_fifo(void) stat = readw(&i2c_base->stat); if (stat == I2C_STAT_RRDY) { #if defined(CONFIG_OMAP243X) || defined(CONFIG_OMAP34XX) || \ - defined(CONFIG_OMAP44XX) + defined(CONFIG_OMAP44XX) || defined(CONFIG_AM33XX) readb(&i2c_base->data); #else readw(&i2c_base->data); @@ -247,7 +247,8 @@ int i2c_read(uchar chip, uint addr, int alen, uchar *buffer, int len) switch (alen) { case 2: /* Send address MSByte */ -#if defined(CONFIG_OMAP243X) || defined(CONFIG_OMAP34XX) +#if defined(CONFIG_OMAP243X) || defined(CONFIG_OMAP34XX) || \ + defined(CONFIG_AM33XX) writew(((addr >> 8) & 0xFF), &i2c_base->data); /* Clearing XRDY event */ @@ -264,7 +265,8 @@ int i2c_read(uchar chip, uint addr, int alen, uchar *buffer, int len) } #endif case 1: -#if defined(CONFIG_OMAP243X) || defined(CONFIG_OMAP34XX) +#if defined(CONFIG_OMAP243X) || defined(CONFIG_OMAP34XX) || \ + defined(CONFIG_AM33XX) /* Send address LSByte */ writew((addr & 0xFF), &i2c_base->data); #else @@ -313,7 +315,8 @@ int i2c_read(uchar chip, uint addr, int alen, uchar *buffer, int len) } if (status & I2C_STAT_RRDY) { -#if defined(CONFIG_OMAP243X) || defined(CONFIG_OMAP34XX) +#if defined(CONFIG_OMAP243X) || defined(CONFIG_OMAP34XX) || \ + defined(CONFIG_AM33XX) buffer[i] = readb(&i2c_base->data); #else *((u16 *)&buffer[i]) = @@ -400,7 +403,8 @@ int i2c_write(uchar chip, uint addr, int alen, uchar *buffer, int len) if (!i2c_error) { if (status & I2C_STAT_XRDY) { switch (alen) { -#if defined(CONFIG_OMAP243X) || defined(CONFIG_OMAP34XX) +#if defined(CONFIG_OMAP243X) || defined(CONFIG_OMAP34XX) || \ + defined(CONFIG_AM33XX) case 2: /* send out MSB byte */ writeb(((addr >> 8) & 0xFF), &i2c_base->data); @@ -420,7 +424,8 @@ int i2c_write(uchar chip, uint addr, int alen, uchar *buffer, int len) break; } case 1: -#if defined(CONFIG_OMAP243X) || defined(CONFIG_OMAP34XX) +#if defined(CONFIG_OMAP243X) || defined(CONFIG_OMAP34XX) || \ + defined(CONFIG_AM33XX) /* send out MSB byte */ writeb((addr & 0xFF), &i2c_base->data); #else @@ -442,7 +447,8 @@ int i2c_write(uchar chip, uint addr, int alen, uchar *buffer, int len) if (!i2c_error) { for (i = ((alen > 1) ? 0 : 1); i < len; i++) { if (status & I2C_STAT_XRDY) { -#if defined(CONFIG_OMAP243X) || defined(CONFIG_OMAP34XX) +#if defined(CONFIG_OMAP243X) || defined(CONFIG_OMAP34XX) || \ + defined(CONFIG_AM33XX) writeb((buffer[i] & 0xFF), &i2c_base->data); #else |