diff options
author | Tony Lindgren <tony@atomide.com> | 2012-10-08 20:11:22 +0400 |
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committer | Tony Lindgren <tony@atomide.com> | 2012-10-17 22:36:50 +0400 |
commit | 3a8761c0272c961c707e5af2eb0179adf3ef7e14 (patch) | |
tree | 101b61bd1bc57de37c52587ecaff1da4e84d7742 /arch/arm/mach-omap2/i2c.c | |
parent | 8599e7c58786e3aef0bdb0fa093fd5150ae8a9bc (diff) | |
download | linux-3a8761c0272c961c707e5af2eb0179adf3ef7e14.tar.xz |
ARM: OMAP: Split plat-omap/i2c.c into mach-omap1 and mach-omap2
There's no need to keep the device related things in the
common i2c.c as omap2+ is using hwmod. Split the code to
mach-omap1 and mach-omap2 parts and only leave common
code to plat-omap/i2c.c.
Note that as omap1 only has one i2c controller, we can
now remove the old device related macros.
Reviewed-by: Shubhrajyoti D <shubhrajyoti@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Diffstat (limited to 'arch/arm/mach-omap2/i2c.c')
-rw-r--r-- | arch/arm/mach-omap2/i2c.c | 50 |
1 files changed, 48 insertions, 2 deletions
diff --git a/arch/arm/mach-omap2/i2c.c b/arch/arm/mach-omap2/i2c.c index fc57e67b321f..9f12f63ec54d 100644 --- a/arch/arm/mach-omap2/i2c.c +++ b/arch/arm/mach-omap2/i2c.c @@ -19,11 +19,12 @@ * */ -#include <plat/i2c.h> #include "common.h" #include <plat/omap_hwmod.h> +#include <plat/omap_device.h> #include "mux.h" +#include "i2c.h" /* In register I2C_CON, Bit 15 is the I2C enable bit */ #define I2C_EN BIT(15) @@ -33,7 +34,9 @@ /* Maximum microseconds to wait for OMAP module to softreset */ #define MAX_MODULE_SOFTRESET_WAIT 10000 -void __init omap2_i2c_mux_pins(int bus_id) +#define MAX_OMAP_I2C_HWMOD_NAME_LEN 16 + +static void __init omap2_i2c_mux_pins(int bus_id) { char mux_name[sizeof("i2c2_scl.i2c2_scl")]; @@ -104,3 +107,46 @@ int omap_i2c_reset(struct omap_hwmod *oh) return 0; } + +static const char name[] = "omap_i2c"; + +int __init omap_i2c_add_bus(struct omap_i2c_bus_platform_data *i2c_pdata, + int bus_id) +{ + int l; + struct omap_hwmod *oh; + 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); + + l = snprintf(oh_name, MAX_OMAP_I2C_HWMOD_NAME_LEN, "i2c%d", bus_id); + WARN(l >= MAX_OMAP_I2C_HWMOD_NAME_LEN, + "String buffer overflow in I2C%d device setup\n", bus_id); + oh = omap_hwmod_lookup(oh_name); + if (!oh) { + pr_err("Could not look up %s\n", oh_name); + return -EEXIST; + } + + pdata = i2c_pdata; + /* + * 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; + + pdev = omap_device_build(name, bus_id, oh, pdata, + sizeof(struct omap_i2c_bus_platform_data), + NULL, 0, 0); + WARN(IS_ERR(pdev), "Could not build omap_device for %s\n", name); + + return PTR_RET(pdev); +} + |