aboutsummaryrefslogtreecommitdiffstats
path: root/arch/arm/plat-omap/i2c.c
diff options
context:
space:
mode:
Diffstat (limited to 'arch/arm/plat-omap/i2c.c')
-rw-r--r--arch/arm/plat-omap/i2c.c45
1 files changed, 32 insertions, 13 deletions
diff --git a/arch/arm/plat-omap/i2c.c b/arch/arm/plat-omap/i2c.c
index 3341ca4..db071bc 100644
--- a/arch/arm/plat-omap/i2c.c
+++ b/arch/arm/plat-omap/i2c.c
@@ -108,6 +108,22 @@ static inline int omap1_i2c_add_bus(int bus_id)
res[1].start = INT_I2C;
pdata = &i2c_pdata[bus_id - 1];
+ /* all OMAP1 have IP version 1 register set */
+ pdata->rev = OMAP_I2C_IP_VERSION_1;
+
+ /* all OMAP1 I2C are implemented like this */
+ pdata->flags = OMAP_I2C_FLAG_NO_FIFO |
+ OMAP_I2C_FLAG_SIMPLE_CLOCK |
+ OMAP_I2C_FLAG_16BIT_DATA_REG |
+ OMAP_I2C_FLAG_ALWAYS_ARMXOR_CLK;
+
+ /* how the cpu bus is wired up differs for 7xx only */
+
+ if (cpu_is_omap7xx())
+ pdata->flags |= OMAP_I2C_FLAG_BUS_SHIFT_1;
+ else
+ pdata->flags |= OMAP_I2C_FLAG_BUS_SHIFT_2;
+
return platform_device_register(pdev);
}
@@ -123,21 +139,14 @@ static void omap_pm_set_max_mpu_wakeup_lat_compat(struct device *dev, long t)
omap_pm_set_max_mpu_wakeup_lat(dev, t);
}
-static struct omap_device_pm_latency omap_i2c_latency[] = {
- [0] = {
- .deactivate_func = omap_device_idle_hwmods,
- .activate_func = omap_device_enable_hwmods,
- .flags = OMAP_DEVICE_LATENCY_AUTO_ADJUST,
- },
-};
-
static inline int omap2_i2c_add_bus(int bus_id)
{
int l;
struct omap_hwmod *oh;
- struct omap_device *od;
+ struct platform_device *pdev;
char oh_name[MAX_OMAP_I2C_HWMOD_NAME_LEN];
struct omap_i2c_bus_platform_data *pdata;
+ struct omap_i2c_dev_attr *dev_attr;
omap2_i2c_mux_pins(bus_id);
@@ -152,6 +161,16 @@ static inline int omap2_i2c_add_bus(int bus_id)
pdata = &i2c_pdata[bus_id - 1];
/*
+ * pass the hwmod class's CPU-specific knowledge of I2C IP revision in
+ * use, and functionality implementation flags, up to the OMAP I2C
+ * driver via platform data
+ */
+ pdata->rev = oh->class->rev;
+
+ dev_attr = (struct omap_i2c_dev_attr *)oh->dev_attr;
+ pdata->flags = dev_attr->flags;
+
+ /*
* When waiting for completion of a i2c transfer, we need to
* set a wake up latency constraint for the MPU. This is to
* ensure quick enough wakeup from idle, when transfer
@@ -160,12 +179,12 @@ 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;
- od = omap_device_build(name, bus_id, oh, pdata,
+ pdev = omap_device_build(name, bus_id, oh, pdata,
sizeof(struct omap_i2c_bus_platform_data),
- omap_i2c_latency, ARRAY_SIZE(omap_i2c_latency), 0);
- WARN(IS_ERR(od), "Could not build omap_device for %s\n", name);
+ NULL, 0, 0);
+ WARN(IS_ERR(pdev), "Could not build omap_device for %s\n", name);
- return PTR_ERR(od);
+ return PTR_RET(pdev);
}
#else
static inline int omap2_i2c_add_bus(int bus_id)