Add DMM device support for OMAP utilizing the OMAP HWMOD framework. Signed-off-by: Hari Kanigeri <h-kanigeri2@xxxxxx> Signed-off-by: David Sin <davidsin@xxxxxx> --- arch/arm/mach-omap2/Makefile | 2 + arch/arm/mach-omap2/dmm-omap44xx.c | 80 ++++++++++++++++++++++++++++++++++++ 2 files changed, 82 insertions(+), 0 deletions(-) create mode 100644 arch/arm/mach-omap2/dmm-omap44xx.c diff --git a/arch/arm/mach-omap2/Makefile b/arch/arm/mach-omap2/Makefile index 60e51bc..fc682ea 100644 --- a/arch/arm/mach-omap2/Makefile +++ b/arch/arm/mach-omap2/Makefile @@ -194,3 +194,5 @@ obj-y += $(smc91x-m) $(smc91x-y) smsc911x-$(CONFIG_SMSC911X) := gpmc-smsc911x.o obj-y += $(smsc911x-m) $(smsc911x-y) + +obj-$(CONFIG_ARCH_OMAP4) += dmm-omap44xx.o diff --git a/arch/arm/mach-omap2/dmm-omap44xx.c b/arch/arm/mach-omap2/dmm-omap44xx.c new file mode 100644 index 0000000..a84490c --- /dev/null +++ b/arch/arm/mach-omap2/dmm-omap44xx.c @@ -0,0 +1,80 @@ +/* + * DMM driver support functions for TI OMAP processors. + * + * Copyright (C) 2010 Texas Instruments Incorporated - http://www.ti.com/ + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation version 2. + * + * This program is distributed "as is" WITHOUT ANY WARRANTY of any + * kind, whether express or implied; without even the implied warranty + * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#include <linux/init.h> +#include <linux/module.h> +#include <mach/dmm.h> +#include <plat/omap_device.h> +#include <plat/omap_hwmod.h> +#include <linux/errno.h> +#include <linux/err.h> + +static struct dmm *plat_data; +static int pdata; + +#ifdef CONFIG_ARCH_OMAP4 +static struct dmm omap4_plat_data[] = { + { + .oh_name = "dmm", + }, +}; +#define NUM_PDATA ARRAY_SIZE(omap4_plat_data) +#else +#define omap4_plat_data NULL +#define NUM_PDATA 0 +#endif + +static struct omap_device_pm_latency omap_dmm_latency[] = { + [0] = { + .deactivate_func = omap_device_idle_hwmods, + .activate_func = omap_device_enable_hwmods, + .flags = OMAP_DEVICE_LATENCY_AUTO_ADJUST, + }, +}; + +static s32 __init dmm_omap_init(void) +{ + struct omap_hwmod *oh = NULL; + struct omap_device *od = NULL; + struct omap_device_pm_latency *ohl = NULL; + int ohlc = 0, i = 0; + + plat_data = omap4_plat_data; + pdata = NUM_PDATA; + + for (i = 0; i < pdata; i++) { + struct dmm *data = &plat_data[i]; + + oh = omap_hwmod_lookup(data->oh_name); + if (!oh) + goto error; + + data->base = oh->_mpu_rt_va; + ohl = omap_dmm_latency; + ohlc = ARRAY_SIZE(omap_dmm_latency); + + od = omap_device_build(data->oh_name, i, oh, data, + sizeof(*data), ohl, ohlc, false); + if (IS_ERR(od)) + goto error; + } + return 0; +error: + return -ENODEV; +} + +MODULE_LICENSE("GPL v2"); +MODULE_AUTHOR("David Sin <davidsin@xxxxxx>"); +device_initcall(dmm_omap_init); -- 1.7.0.4 -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
