From mboxrd@z Thu Jan 1 00:00:00 1970 From: nm@ti.com (Nishanth Menon) Date: Wed, 27 Jul 2011 15:02:32 -0500 Subject: [PATCH] OMAP: hwmod: add omap_hwmod_to_device Message-ID: To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org omap_hwmod_to_device is useful for drivers when they need to look up the device associated with a hwmod name to map back into the device structure pointers. These ideally should be used by drivers in mach directory. This could in effect replace apis such as omap2_get_mpuss_device, omap2_get_iva_device, omap2_get_l3_device, omap4_get_dsp_device etc.. Signed-off-by: Nishanth Menon --- arch/arm/mach-omap2/omap_hwmod.c | 33 ++++++++++++++++++++++++++ arch/arm/plat-omap/include/plat/omap_hwmod.h | 2 + 2 files changed, 35 insertions(+), 0 deletions(-) diff --git a/arch/arm/mach-omap2/omap_hwmod.c b/arch/arm/mach-omap2/omap_hwmod.c index 293fa6c..77d01a2 100644 --- a/arch/arm/mach-omap2/omap_hwmod.c +++ b/arch/arm/mach-omap2/omap_hwmod.c @@ -142,6 +142,7 @@ #include "powerdomain.h" #include #include +#include #include #include "cm2xxx_3xxx.h" @@ -2369,3 +2370,35 @@ int omap_hwmod_no_setup_reset(struct omap_hwmod *oh) return 0; } + +/** + * omap_hwmod_to_device() - convert a hwmod name to device pointer + * @oh_name: name of the hwmod device + * + * returns back a struct device * pointer associated with a hwmod + * device represented by a hwmod_name + */ +struct device *omap_hwmod_to_device(const char *oh_name) +{ + struct omap_hwmod *oh; + + if (!oh_name) { + WARN(1, "%s: no hwmod name!\n", __func__); + return ERR_PTR(-EINVAL); + } + + oh = _lookup(oh_name); + if (IS_ERR_OR_NULL(oh)) { + WARN(1, "%s: no hwmod for %s\n", __func__, + oh_name); + return ERR_PTR(-ENODEV); + } + if (IS_ERR_OR_NULL(oh->od)) { + WARN(1, "%s: no omap_device for %s\n", __func__, + oh_name); + return ERR_PTR(-ENODEV); + } + + return &oh->od->pdev.dev; +} +EXPORT_SYMBOL(omap_hwmod_to_device); diff --git a/arch/arm/plat-omap/include/plat/omap_hwmod.h b/arch/arm/plat-omap/include/plat/omap_hwmod.h index 1adea9c..b9eec08 100644 --- a/arch/arm/plat-omap/include/plat/omap_hwmod.h +++ b/arch/arm/plat-omap/include/plat/omap_hwmod.h @@ -611,4 +611,6 @@ extern int omap2430_hwmod_init(void); extern int omap3xxx_hwmod_init(void); extern int omap44xx_hwmod_init(void); +extern struct device *omap_hwmod_to_device(const char *oh_name); + #endif -- 1.7.4.1