Hi, On Thu, Aug 11, 2011 at 08:10:07AM +0530, J, KEERTHY wrote: > >> diff --git a/arch/arm/plat-omap/Kconfig b/arch/arm/plat-omap/Kconfig > >> index 6e6735f..8fd8e80 100644 > >> --- a/arch/arm/plat-omap/Kconfig > >> +++ b/arch/arm/plat-omap/Kconfig > >> @@ -115,6 +115,18 @@ config OMAP_MCBSP > >> Say Y here if you want support for the OMAP Multichannel > >> Buffered Serial Port. > >> > >> +config OMAP_TEMP_SENSOR > >> + bool "OMAP Temp Sensor Support" > >> + depends on ARCH_OMAP > >> + default n > >> + help > >> + Say Y here if you want support for the temp sensor > >> + on OMAP4460. > >> + > >> + This provides the temperature of the MPU > >> + subsystem. Only one instance of on die temperature > >> + sensor is present. > > > > if there's only one instance, why do you use > > omap_hwmod_for_each_by_class() ?? > > In case of OMAP5 there are multiple instances. Hence using > omap_hwmod_for_each_by_class(). that's not a reality yet, so why don't you leave it for when OMAP5 is around ? > >> diff --git a/arch/arm/plat-omap/include/plat/temperature_sensor.h b/arch/arm/plat-omap/include/plat/temperature_sensor.h > >> new file mode 100644 > >> index 0000000..692ebdc > >> --- /dev/null > >> +++ b/arch/arm/plat-omap/include/plat/temperature_sensor.h > >> @@ -0,0 +1,87 @@ > >> +/* > >> + * OMAP Temperature sensor header file > >> + * > >> + * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/ > >> + * Author: J Keerthy <j-keerthy@xxxxxx> > >> + * > >> + * 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. > >> + * > >> + * This program is distributed in the hope that it will be useful, but > >> + * WITHOUT ANY WARRANTY; without even the implied warranty of > >> + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU > >> + * General Public License for more details. > >> + * > >> + * You should have received a copy of the GNU General Public License > >> + * along with this program; if not, write to the Free Software > >> + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA > >> + * 02110-1301 USA > >> + * > >> + */ > >> + > >> +#ifndef __ARCH_ARM_PLAT_OMAP_INCLUDE_PLAT_TEMPERATURE_SENSOR_H > >> +#define __ARCH_ARM_PLAT_OMAP_INCLUDE_PLAT_TEMPERATURE_SENSOR_H > >> + > >> +/* Offsets from the base of temperature sensor registers */ > >> + > >> +#define OMAP4460_TEMP_SENSOR_CTRL_OFFSET 0x00 > >> +#define OMAP4460_BGAP_CTRL_OFFSET 0x4c > >> +#define OMAP4460_BGAP_COUNTER_OFFSET 0x50 > >> +#define OMAP4460_BGAP_THRESHOLD_OFFSET 0x54 > >> +#define OMAP4460_BGAP_TSHUT_OFFSET 0x58 > >> +#define OMAP4460_BGAP_STATUS_OFFSET 0x5c > >> +#define OMAP4460_FUSE_OPP_BGAP -0xcc > >> + > >> +struct omap_temp_sensor_registers { > >> + u32 temp_sensor_ctrl; > >> + u32 bgap_tempsoff_mask; > >> + u32 bgap_soc_mask; > >> + u32 bgap_eocz_mask; > >> + u32 bgap_dtemp_mask; > >> + > >> + u32 bgap_mask_ctrl; > >> + u32 mask_hot_mask; > >> + u32 mask_cold_mask; > >> + > >> + u32 bgap_mode_ctrl; > >> + u32 mode_ctrl_mask; > >> + > >> + u32 bgap_counter; > >> + u32 counter_mask; > >> + > >> + u32 bgap_threshold; > >> + u32 threshold_thot_mask; > >> + u32 threshold_tcold_mask; > >> + > >> + u32 thsut_threshold; > >> + u32 tshut_hot_mask; > >> + u32 tshut_cold_mask; > >> + > >> + u32 bgap_status; > >> + u32 status_clean_stop_mask; > >> + u32 status_bgap_alert_mask; > >> + u32 status_hot_mask; > >> + u32 status_cold_mask; > >> + > >> + u32 bgap_efuse; > >> +}; > > > > I find it unnecessary to pass the register map to driver using > > platform_data. > > With multiple instances the register map to individual instances will change. > So passing it via platform_data. what will change is the base address, the offsets should remain the same. -- balbi
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