d/freebsd-nq
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Allow us to compile the Ti iic driver for both OMAP4 and AM335x.

Browse Source 
MFC after:	1 week
This commit is contained in:
Andrew Turner 2014-05-17 18:52:20 +00:00
parent 79eb99df5d
commit 101355bc67
1 changed files with 23 additions and 7 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

30
sys/arm/ti/ti_i2c.c
View File

@ -65,6 +65,7 @@ __FBSDID("$FreeBSD$");
#include <dev/ofw/ofw_bus.h>
#include <dev/ofw/ofw_bus_subr.h>
#include <arm/ti/ti_cpuid.h>
#include <arm/ti/ti_prcm.h>
#include <arm/ti/ti_i2c.h>
@ -106,21 +107,23 @@ struct ti_i2c_clock_config
uint8_t hssclh; /* High Speed mode SCL high time */
};
static struct ti_i2c_clock_config ti_i2c_clock_configs[] = {
#if defined(SOC_OMAP4)
static struct ti_i2c_clock_config ti_omap4_i2c_clock_configs[] = {
{ IIC_SLOW, 100000, 23, 13, 15, 0, 0},
{ IIC_FAST, 400000, 9, 5, 7, 0, 0},
{ IIC_FASTEST, 3310000, 1, 113, 115, 7, 10},
#elif defined(SOC_TI_AM335X)
{ -1, 0 }
};
#endif
#if defined(SOC_TI_AM335X)
static struct ti_i2c_clock_config ti_am335x_i2c_clock_configs[] = {
{ IIC_SLOW, 100000, 3, 53, 55, 0, 0},
{ IIC_FAST, 400000, 3, 8, 10, 0, 0},
{ IIC_FASTEST, 400000, 3, 8, 10, 0, 0}, /* This might be higher */
#else
#error "TI I2C driver is not supported on this SoC"
#endif
{ -1, 0 }
};
#endif
#define TI_I2C_REV1 0x003C /* OMAP3 */
@ -280,7 +283,20 @@ ti_i2c_reset(device_t dev, u_char speed, u_char addr, u_char *oldaddr)
struct ti_i2c_clock_config *clkcfg;
uint16_t con_reg;
clkcfg = ti_i2c_clock_configs;
switch (ti_chip()) {
#ifdef SOC_OMAP4
case CHIP_OMAP_4:
clkcfg = ti_omap4_i2c_clock_configs;
break;
#endif
#ifdef SOC_TI_AM335X
case CHIP_AM335X:
clkcfg = ti_am335x_i2c_clock_configs;
break;
#endif
default:
panic("Unknown Ti SoC, unable to reset the i2c");
}
while (clkcfg->speed != -1) {
if (clkcfg->speed == speed)
break;