diff options
Diffstat (limited to 'arch/arm/mach-omap2/vp.h')
| -rw-r--r-- | arch/arm/mach-omap2/vp.h | 143 |
1 files changed, 143 insertions, 0 deletions
diff --git a/arch/arm/mach-omap2/vp.h b/arch/arm/mach-omap2/vp.h new file mode 100644 index 000000000000..7ce134f7de79 --- /dev/null +++ b/arch/arm/mach-omap2/vp.h @@ -0,0 +1,143 @@ +/* + * OMAP3/4 Voltage Processor (VP) structure and macro definitions + * + * Copyright (C) 2007, 2010 Texas Instruments, Inc. + * Rajendra Nayak <rnayak@ti.com> + * Lesly A M <x0080970@ti.com> + * Thara Gopinath <thara@ti.com> + * + * Copyright (C) 2008, 2011 Nokia Corporation + * Kalle Jokiniemi + * Paul Walmsley + * + * 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. + */ +#ifndef __ARCH_ARM_MACH_OMAP2_VP_H +#define __ARCH_ARM_MACH_OMAP2_VP_H + +#include <linux/kernel.h> + +/* XXX document */ +#define VP_IDLE_TIMEOUT 200 +#define VP_TRANXDONE_TIMEOUT 300 + + +/** + * struct omap_vp_common_data - register data common to all VDDs + * @vpconfig_errorgain_mask: ERRORGAIN bitmask in the PRM_VP*_CONFIG reg + * @vpconfig_initvoltage_mask: INITVOLTAGE bitmask in the PRM_VP*_CONFIG reg + * @vpconfig_timeouten_mask: TIMEOUT bitmask in the PRM_VP*_CONFIG reg + * @vpconfig_initvdd: INITVDD bitmask in the PRM_VP*_CONFIG reg + * @vpconfig_forceupdate: FORCEUPDATE bitmask in the PRM_VP*_CONFIG reg + * @vpconfig_vpenable: VPENABLE bitmask in the PRM_VP*_CONFIG reg + * @vpconfig_erroroffset_shift: ERROROFFSET field shift in PRM_VP*_CONFIG reg + * @vpconfig_errorgain_shift: ERRORGAIN field shift in PRM_VP*_CONFIG reg + * @vpconfig_initvoltage_shift: INITVOLTAGE field shift in PRM_VP*_CONFIG reg + * @vpconfig_stepmin_shift: VSTEPMIN field shift in the PRM_VP*_VSTEPMIN reg + * @vpconfig_smpswaittimemin_shift: SMPSWAITTIMEMIN field shift in PRM_VP*_VSTEPMIN reg + * @vpconfig_stepmax_shift: VSTEPMAX field shift in the PRM_VP*_VSTEPMAX reg + * @vpconfig_smpswaittimemax_shift: SMPSWAITTIMEMAX field shift in PRM_VP*_VSTEPMAX reg + * @vpconfig_vlimitto_vddmin_shift: VDDMIN field shift in PRM_VP*_VLIMITTO reg + * @vpconfig_vlimitto_vddmax_shift: VDDMAX field shift in PRM_VP*_VLIMITTO reg + * @vpconfig_vlimitto_timeout_shift: TIMEOUT field shift in PRM_VP*_VLIMITTO reg + * + * XXX It it not necessary to have both a mask and a shift for the same + * bitfield - remove one + * XXX Many of these fields are wrongly named -- e.g., vpconfig_smps* -- fix! + */ +struct omap_vp_common_data { + u32 vpconfig_errorgain_mask; + u32 vpconfig_initvoltage_mask; + u32 vpconfig_timeouten; + u32 vpconfig_initvdd; + u32 vpconfig_forceupdate; + u32 vpconfig_vpenable; + u8 vpconfig_erroroffset_shift; + u8 vpconfig_errorgain_shift; + u8 vpconfig_initvoltage_shift; + u8 vstepmin_stepmin_shift; + u8 vstepmin_smpswaittimemin_shift; + u8 vstepmax_stepmax_shift; + u8 vstepmax_smpswaittimemax_shift; + u8 vlimitto_vddmin_shift; + u8 vlimitto_vddmax_shift; + u8 vlimitto_timeout_shift; +}; + +/** + * struct omap_vp_prm_irqst_data - PRM_IRQSTATUS_MPU.VP_TRANXDONE_ST data + * @prm_irqst_reg: reg offset for PRM_IRQSTATUS_MPU from top of PRM + * @tranxdone_status: VP_TRANXDONE_ST bitmask in PRM_IRQSTATUS_MPU reg + * + * XXX prm_irqst_reg does not belong here + * XXX Note that on OMAP3, VP_TRANXDONE interrupt may not work due to a + * hardware bug + * XXX This structure is probably not needed + */ +struct omap_vp_prm_irqst_data { + u8 prm_irqst_reg; + u32 tranxdone_status; +}; + +/** + * struct omap_vp_instance_data - VP register offsets (per-VDD) + * @vp_common: pointer to struct omap_vp_common_data * for this SoC + * @prm_irqst_data: pointer to struct omap_vp_prm_irqst_data for this VDD + * @vpconfig: PRM_VP*_CONFIG reg offset from PRM start + * @vstepmin: PRM_VP*_VSTEPMIN reg offset from PRM start + * @vlimitto: PRM_VP*_VLIMITTO reg offset from PRM start + * @vstatus: PRM_VP*_VSTATUS reg offset from PRM start + * @voltage: PRM_VP*_VOLTAGE reg offset from PRM start + * + * XXX vp_common is probably not needed since it is per-SoC + */ +struct omap_vp_instance_data { + const struct omap_vp_common_data *vp_common; + const struct omap_vp_prm_irqst_data *prm_irqst_data; + u8 vpconfig; + u8 vstepmin; + u8 vstepmax; + u8 vlimitto; + u8 vstatus; + u8 voltage; +}; + +/** + * struct omap_vp_runtime_data - VP data populated at runtime by code + * @vpconfig_erroroffset: value of ERROROFFSET bitfield in PRM_VP*_CONFIG + * @vpconfig_errorgain: value of ERRORGAIN bitfield in PRM_VP*_CONFIG + * @vstepmin_smpswaittimemin: value of SMPSWAITTIMEMIN bitfield in PRM_VP*_VSTEPMIN + * @vstepmax_smpswaittimemax: value of SMPSWAITTIMEMAX bitfield in PRM_VP*_VSTEPMAX + * @vlimitto_timeout: value of TIMEOUT bitfield in PRM_VP*_VLIMITTO + * @vstepmin_stepmin: value of VSTEPMIN bitfield in PRM_VP*_VSTEPMIN + * @vstepmax_stepmax: value of VSTEPMAX bitfield in PRM_VP*_VSTEPMAX + * @vlimitto_vddmin: value of VDDMIN bitfield in PRM_VP*_VLIMITTO + * @vlimitto_vddmax: value of VDDMAX bitfield in PRM_VP*_VLIMITTO + * + * XXX Is this structure really needed? Why not just program the + * device directly? They are in PRM space, therefore in the WKUP + * powerdomain, so register contents should not be lost in off-mode. + * XXX Some of these fields are incorrectly named, e.g., vstep* + */ +struct omap_vp_runtime_data { + u32 vpconfig_erroroffset; + u16 vpconfig_errorgain; + u16 vstepmin_smpswaittimemin; + u16 vstepmax_smpswaittimemax; + u16 vlimitto_timeout; + u8 vstepmin_stepmin; + u8 vstepmax_stepmax; + u8 vlimitto_vddmin; + u8 vlimitto_vddmax; +}; + +extern struct omap_vp_instance_data omap3_vp1_data; +extern struct omap_vp_instance_data omap3_vp2_data; + +extern struct omap_vp_instance_data omap4_vp_mpu_data; +extern struct omap_vp_instance_data omap4_vp_iva_data; +extern struct omap_vp_instance_data omap4_vp_core_data; + +#endif |