iommu/omap: add pdata ops for omap_device_enable/idle

Add two new platform data ops to allow the OMAP iommu driver to
be able to invoke the omap_device_enable and omap_device_idle
from within the driver. These are being added to streamline the
sequence between managing the hard reset lines and the clocks
during the suspend path, as the default device pm_domain callback
sequences in omap_device layer are not conducive for the OMAP
IOMMU driver.

This could have been done by expanding the existing pdata ops
for reset management (like in the OMAP remoteproc driver), but
this was chosen to avoid adding additional code in the separate
file in the mach-omap2 layer.

Signed-off-by: Suman Anna <s-anna@ti.com>

diff --git a/include/linux/platform_data/iommu-omap.h b/include/linux/platform_data/iommu-omap.h
index 1a0aa46a5ad6459e0ff31e8ab406fd7aae32f6f2..6669dc9394daafd33547d2fcc4e4a750687630ac 100644 (file)
--- a/include/linux/platform_data/iommu-omap.h
+++ b/include/linux/platform_data/iommu-omap.h
@@ -16,6 +16,8 @@ struct iommu_platform_data {
        const char *reset_name;
        int (*assert_reset)(struct platform_device *pdev, const char *name);
        int (*deassert_reset)(struct platform_device *pdev, const char *name);
+       int (*device_enable)(struct platform_device *pdev);
+       int (*device_idle)(struct platform_device *pdev);
        int (*set_pwrdm_constraint)(struct platform_device *pdev, bool request,
                                    u8 *pwrst);
 };