Under some error conditions the i2c driver may do a reset. Adding a reset field and support in the platform. Signed-off-by: Shubhrajyoti D <shubhrajyoti@xxxxxx> --- arch/arm/plat-omap/i2c.c | 17 +++++++++++++++++ include/linux/i2c-omap.h | 1 + 2 files changed, 18 insertions(+), 0 deletions(-) diff --git a/arch/arm/plat-omap/i2c.c b/arch/arm/plat-omap/i2c.c index 2388b8e..98a97b0 100644 --- a/arch/arm/plat-omap/i2c.c +++ b/arch/arm/plat-omap/i2c.c @@ -146,6 +146,22 @@ static struct omap_device_pm_latency omap_i2c_latency[] = { .flags = OMAP_DEVICE_LATENCY_AUTO_ADJUST, }, }; +/** + * omap2_i2c_reset - reset the omap i2c module. + * @dev: struct device* + */ + +static int omap2_i2c_reset(struct device *dev) +{ + int r = 0; + struct platform_device *pdev = to_platform_device(dev); + struct omap_device *odev = to_omap_device(pdev); + struct omap_hwmod *oh; + + oh = odev->hwmods[0]; + r = omap_hwmod_reset(oh); + return r; +} static inline int omap2_i2c_add_bus(int bus_id) { @@ -187,6 +203,7 @@ static inline int omap2_i2c_add_bus(int bus_id) */ if (cpu_is_omap34xx()) pdata->set_mpu_wkup_lat = omap_pm_set_max_mpu_wakeup_lat_compat; + pdata->device_reset = omap2_i2c_reset; od = omap_device_build(name, bus_id, oh, pdata, sizeof(struct omap_i2c_bus_platform_data), omap_i2c_latency, ARRAY_SIZE(omap_i2c_latency), 0); diff --git a/include/linux/i2c-omap.h b/include/linux/i2c-omap.h index 98ae49b..8aa91b6 100644 --- a/include/linux/i2c-omap.h +++ b/include/linux/i2c-omap.h @@ -38,6 +38,7 @@ struct omap_i2c_bus_platform_data { int (*device_enable) (struct platform_device *pdev); int (*device_shutdown) (struct platform_device *pdev); int (*device_idle) (struct platform_device *pdev); + int (*device_reset) (struct device *dev); }; #endif -- 1.7.1 -- To unsubscribe from this list: send the line "unsubscribe linux-i2c" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html