From: Kevin Hilman <khilman@xxxxxxxxxxxxxxxxxxx> Create simple omap_devices for the main processors and busses. This is required to support the forth-coming device-based OPP approach, where OPPs are managed and tracked at the device level. Also, move these common PM init functions into a common_pm_init call that is called as a device_initcall(). The PM init is done at this level to ensure that the driver core is initialized before initialized. Signed-off-by: Kevin Hilman <khilman@xxxxxxxxxxxxxxxxxxx> [paul@xxxxxxxxx: sparse warnings cleaned up; newly-created functions moved from mach-omap2/io.c to mach-omap2/pm.c; newly-created functions renamed to start with "omap2" rather than "omap"] Signed-off-by: Paul Walmsley <paul@xxxxxxxxx> --- arch/arm/mach-omap2/Makefile | 2 - arch/arm/mach-omap2/io.c | 2 - arch/arm/mach-omap2/pm.c | 84 ++++++++++++++++++++++++++++++ arch/arm/plat-omap/include/plat/common.h | 4 + 4 files changed, 90 insertions(+), 2 deletions(-) create mode 100644 arch/arm/mach-omap2/pm.c diff --git a/arch/arm/mach-omap2/Makefile b/arch/arm/mach-omap2/Makefile index 2fa3418..213f1df 100644 --- a/arch/arm/mach-omap2/Makefile +++ b/arch/arm/mach-omap2/Makefile @@ -3,7 +3,7 @@ # # Common support -obj-y := id.o io.o control.o mux.o devices.o serial.o gpmc.o timer-gp.o +obj-y := id.o io.o control.o mux.o devices.o serial.o gpmc.o timer-gp.o pm.o omap-2-3-common = irq.o sdrc.o hwmod-common = omap_hwmod.o \ diff --git a/arch/arm/mach-omap2/io.c b/arch/arm/mach-omap2/io.c index 05c9cdb..2b983ac 100644 --- a/arch/arm/mach-omap2/io.c +++ b/arch/arm/mach-omap2/io.c @@ -44,6 +44,7 @@ #include <plat/clockdomain.h> #include "clockdomains.h" + #include <plat/omap_hwmod.h> /* @@ -346,7 +347,6 @@ void __init omap2_init_common_hw(struct omap_sdrc_params *sdrc_cs0, if (cpu_is_omap24xx() || cpu_is_omap34xx()) /* FIXME: OMAP4 */ omap_hwmod_late_init(skip_setup_idle); - omap_pm_if_init(); if (cpu_is_omap24xx() || cpu_is_omap34xx()) { omap2_sdrc_init(sdrc_cs0, sdrc_cs1); _omap2_init_reprogram_sdrc(); diff --git a/arch/arm/mach-omap2/pm.c b/arch/arm/mach-omap2/pm.c new file mode 100644 index 0000000..68f9f2e --- /dev/null +++ b/arch/arm/mach-omap2/pm.c @@ -0,0 +1,84 @@ +/* + * pm.c - Common OMAP2+ power management-related code + * + * Copyright (C) 2010 Texas Instruments, Inc. + * Copyright (C) 2010 Nokia Corporation + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#include <linux/kernel.h> +#include <linux/init.h> +#include <linux/io.h> +#include <linux/err.h> + +#include <plat/omap-pm.h> +#include <plat/omap_device.h> +#include <plat/common.h> + +static struct omap_device_pm_latency *pm_lats; + +static struct device *mpu_dev; +static struct device *dsp_dev; +static struct device *l3_dev; + +struct device *omap2_get_mpuss_device(void) +{ + WARN_ON_ONCE(!mpu_dev); + return mpu_dev; +} + +struct device *omap2_get_dsp_device(void) +{ + WARN_ON_ONCE(!dsp_dev); + return dsp_dev; +} + +struct device *omap2_get_l3_device(void) +{ + WARN_ON_ONCE(!l3_dev); + return l3_dev; +} + +/* static int _init_omap_device(struct omap_hwmod *oh, void *user) */ +static int _init_omap_device(char *name, struct device **new_dev) +{ + struct omap_hwmod *oh; + struct omap_device *od; + + oh = omap_hwmod_lookup(name); + if (WARN(!oh, "%s: could not find omap_hwmod for %s\n", + __func__, name)) + return -ENODEV; + + od = omap_device_build(oh->name, 0, oh, NULL, 0, pm_lats, 0, false); + if (WARN(IS_ERR(od), "%s: could not build omap_device for %s\n", + __func__, name)) + return -ENODEV; + + *new_dev = &od->pdev.dev; + + return 0; +} + +/* + * Build omap_devices for processors and bus. + */ +static void omap2_init_processor_devices(void) +{ + _init_omap_device("mpu", &mpu_dev); + _init_omap_device("iva", &dsp_dev); + _init_omap_device("l3_main", &l3_dev); +} + +static int __init omap2_common_pm_init(void) +{ + omap2_init_processor_devices(); + omap_pm_if_init(); + + return 0; +} +device_initcall(omap2_common_pm_init); + diff --git a/arch/arm/plat-omap/include/plat/common.h b/arch/arm/plat-omap/include/plat/common.h index 5e4afbe..5cf9509 100644 --- a/arch/arm/plat-omap/include/plat/common.h +++ b/arch/arm/plat-omap/include/plat/common.h @@ -89,4 +89,8 @@ void omap2_set_globals_uart(struct omap_globals *); } \ }) +extern struct device *omap2_get_mpuss_device(void); +extern struct device *omap2_get_dsp_device(void); +extern struct device *omap2_get_l3_device(void); + #endif /* __ARCH_ARM_MACH_OMAP_COMMON_H */ -- 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