Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1760061AbYGPPTP (ORCPT ); Wed, 16 Jul 2008 11:19:15 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1757565AbYGPPSJ (ORCPT ); Wed, 16 Jul 2008 11:18:09 -0400 Received: from mho-01-bos.mailhop.org ([63.208.196.178]:59928 "EHLO mho-01-bos.mailhop.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1759379AbYGPPSG (ORCPT ); Wed, 16 Jul 2008 11:18:06 -0400 X-Mail-Handler: MailHop Outbound by DynDNS X-Originating-IP: 72.249.23.125 X-Report-Abuse-To: abuse@dyndns.com (see http://www.mailhop.org/outbound/abuse.html for abuse reporting information) X-MHO-User: U2FsdGVkX1/948vsJcnH1JskD/O33b8L From: Tony Lindgren To: linux-kernel@vger.kernel.org Cc: linux-pm@lists.linux-foundation.org, linux-arm-kernel@lists.arm.linux.org.uk, linux-omap@vger.kernel.org, Paul Walmsley , Tony Lindgren Subject: [PATCH 02/10] ARM: OMAP2: Powerdomain: Add OMAP2/3 common powerdomains Date: Wed, 16 Jul 2008 18:19:07 +0300 Message-Id: <1216221555-18958-3-git-send-email-tony@atomide.com> X-Mailer: git-send-email 1.5.6.rc3.21.g8c6b5 In-Reply-To: <1216221555-18958-2-git-send-email-tony@atomide.com> References: <1216221555-18958-1-git-send-email-tony@atomide.com> <1216221555-18958-2-git-send-email-tony@atomide.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 6112 Lines: 203 From: Paul Walmsley Add powerdomains common to both OMAP2 and OMAP3 (WKUP and GFX/SGX). Modify mach-omap2/io.c to initialize the powerdomain code on boot. Signed-off-by: Paul Walmsley Signed-off-by: Tony Lindgren diff --git a/arch/arm/mach-omap2/io.c b/arch/arm/mach-omap2/io.c index 69c8174..20ddfaa 100644 --- a/arch/arm/mach-omap2/io.c +++ b/arch/arm/mach-omap2/io.c @@ -24,6 +24,10 @@ #include #include +#include + +#include "powerdomains.h" + extern void omap_sram_init(void); extern int omap2_clk_init(void); extern void omap2_check_revision(void); @@ -101,6 +105,7 @@ void __init omap2_map_common_io(void) void __init omap2_init_common_hw(void) { omap2_mux_init(); + pwrdm_init(powerdomains_omap); omap2_clk_init(); /* * Need to Fix this for 2430 diff --git a/arch/arm/mach-omap2/powerdomains.h b/arch/arm/mach-omap2/powerdomains.h new file mode 100644 index 0000000..56c2a8f --- /dev/null +++ b/arch/arm/mach-omap2/powerdomains.h @@ -0,0 +1,147 @@ +/* + * OMAP2/3 common powerdomain definitions + * + * Copyright (C) 2007-8 Texas Instruments, Inc. + * Copyright (C) 2007-8 Nokia Corporation + * + * Written by Paul Walmsley + * Debugging and integration fixes by Jouni Högander + * + * 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_POWERDOMAINS +#define ARCH_ARM_MACH_OMAP2_POWERDOMAINS + +/* + * This file contains all of the powerdomains that have some element + * of software control for the OMAP24xx and OMAP34XX chips. + * + * A few notes: + * + * This is not an exhaustive listing of powerdomains on the chips; only + * powerdomains that can be controlled in software. + * + * A useful validation rule for struct powerdomain: + * Any powerdomain referenced by a wkdep_srcs or sleepdep_srcs array + * must have a dep_bit assigned. So wkdep_srcs/sleepdep_srcs are really + * just software-controllable dependencies. Non-software-controllable + * dependencies do exist, but they are not encoded below (yet). + * + * 24xx does not support programmable sleep dependencies (SLEEPDEP) + * + */ + +/* + * The names for the DSP/IVA2 powerdomains are confusing. + * + * Most OMAP chips have an on-board DSP. + * + * On the 2420, this is a 'C55 DSP called, simply, the DSP. Its + * powerdomain is called the "DSP power domain." On the 2430, the + * on-board DSP is a 'C64 DSP, now called the IVA2 or IVA2.1. Its + * powerdomain is still called the "DSP power domain." On the 3430, + * the DSP is a 'C64 DSP like the 2430, also known as the IVA2; but + * its powerdomain is now called the "IVA2 power domain." + * + * The 2420 also has something called the IVA, which is a separate ARM + * core, and has nothing to do with the DSP/IVA2. + * + * Ideally the DSP/IVA2 could just be the same powerdomain, but the PRCM + * address offset is different between the C55 and C64 DSPs. + * + * The overly-specific dep_bit names are due to a bit name collision + * with CM_FCLKEN_{DSP,IVA2}. The DSP/IVA2 PM_WKDEP and CM_SLEEPDEP shift + * value are the same for all powerdomains: 2 + */ + +/* + * XXX should dep_bit be a mask, so we can test to see if it is 0 as a + * sanity check? + * XXX encode hardware fixed wakeup dependencies -- esp. for 3430 CORE + */ + +#include + +#include "prcm-common.h" +#include "prm.h" +#include "cm.h" + +/* OMAP2/3-common powerdomains and wakeup dependencies */ + +/* + * 2420/2430 PM_WKDEP_GFX: CORE, MPU, WKUP + * 3430ES1 PM_WKDEP_GFX: adds IVA2, removes CORE + * 3430ES2 PM_WKDEP_SGX: adds IVA2, removes CORE + */ +static struct pwrdm_dep gfx_sgx_wkdeps[] = { + { + .pwrdm_name = "core_pwrdm", + .omap_chip = OMAP_CHIP_INIT(CHIP_IS_OMAP24XX) + }, + { + .pwrdm_name = "iva2_pwrdm", + .omap_chip = OMAP_CHIP_INIT(CHIP_IS_OMAP3430) + }, + { + .pwrdm_name = "mpu_pwrdm", + .omap_chip = OMAP_CHIP_INIT(CHIP_IS_OMAP24XX | + CHIP_IS_OMAP3430) + }, + { + .pwrdm_name = "wkup_pwrdm", + .omap_chip = OMAP_CHIP_INIT(CHIP_IS_OMAP24XX | + CHIP_IS_OMAP3430) + }, + { NULL }, +}; + +/* + * OMAP2/3 common powerdomains + */ + +/* XXX add sleepdeps for this powerdomain : 3430 */ + +/* + * The GFX powerdomain is not present on 3430ES2, but currently we do not + * have a macro to filter it out at compile-time. + */ +static struct powerdomain gfx_pwrdm = { + .name = "gfx_pwrdm", + .prcm_offs = GFX_MOD, + .omap_chip = OMAP_CHIP_INIT(CHIP_IS_OMAP24XX | + CHIP_IS_OMAP3430ES1), + .wkdep_srcs = gfx_sgx_wkdeps, + .pwrsts = PWRSTS_OFF_RET_ON, + .pwrsts_logic_ret = PWRDM_POWER_RET, + .banks = 1, + .pwrsts_mem_ret = { + [0] = PWRDM_POWER_RET, /* MEMRETSTATE */ + }, + .pwrsts_mem_on = { + [0] = PWRDM_POWER_ON, /* MEMONSTATE */ + }, +}; + +static struct powerdomain wkup_pwrdm = { + .name = "wkup_pwrdm", + .prcm_offs = WKUP_MOD, + .omap_chip = OMAP_CHIP_INIT(CHIP_IS_OMAP24XX | CHIP_IS_OMAP3430), + .dep_bit = OMAP_EN_WKUP_SHIFT, +}; + + + +/* As powerdomains are added or removed above, this list must also be changed */ +static struct powerdomain *powerdomains_omap[] __initdata = { + + &gfx_pwrdm, + &wkup_pwrdm, + + NULL +}; + + +#endif diff --git a/arch/arm/mach-omap2/prm.h b/arch/arm/mach-omap2/prm.h index bbf41fc..eb9982f 100644 --- a/arch/arm/mach-omap2/prm.h +++ b/arch/arm/mach-omap2/prm.h @@ -305,7 +305,8 @@ static inline u32 prm_clear_mod_reg_bits(u32 bits, s16 module, s16 idx) * 3430: PM_WKDEP_IVA2, PM_WKDEP_GFX, PM_WKDEP_DSS, PM_WKDEP_CAM, * PM_WKDEP_PER */ -#define OMAP_EN_WKUP (1 << 4) +#define OMAP_EN_WKUP_SHIFT 4 +#define OMAP_EN_WKUP_MASK (1 << 4) /* * 24XX: PM_PWSTCTRL_MPU, PM_PWSTCTRL_CORE, PM_PWSTCTRL_GFX, -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/