From patchwork Tue Mar 4 16:19:10 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Tero Kristo X-Patchwork-Id: 3763201 Return-Path: X-Original-To: patchwork-linux-omap@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork2.web.kernel.org (Postfix) with ESMTP id 6CE1BBF40C for ; Tue, 4 Mar 2014 16:20:36 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 80D8520397 for ; Tue, 4 Mar 2014 16:20:35 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 6E531203B0 for ; Tue, 4 Mar 2014 16:20:34 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754537AbaCDQUc (ORCPT ); Tue, 4 Mar 2014 11:20:32 -0500 Received: from comal.ext.ti.com ([198.47.26.152]:35158 "EHLO comal.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754527AbaCDQUb (ORCPT ); Tue, 4 Mar 2014 11:20:31 -0500 Received: from dlelxv90.itg.ti.com ([172.17.2.17]) by comal.ext.ti.com (8.13.7/8.13.7) with ESMTP id s24GK1Ta026485; Tue, 4 Mar 2014 10:20:01 -0600 Received: from DLEE71.ent.ti.com (dlee71.ent.ti.com [157.170.170.114]) by dlelxv90.itg.ti.com (8.14.3/8.13.8) with ESMTP id s24GK1Yo012840; Tue, 4 Mar 2014 10:20:01 -0600 Received: from dflp32.itg.ti.com (10.64.6.15) by DLEE71.ent.ti.com (157.170.170.114) with Microsoft SMTP Server id 14.3.174.1; Tue, 4 Mar 2014 10:20:01 -0600 Received: from localhost.localdomain (ileax41-snat.itg.ti.com [10.172.224.153]) by dflp32.itg.ti.com (8.14.3/8.13.8) with ESMTP id s24GJdR9017797; Tue, 4 Mar 2014 10:19:59 -0600 From: Tero Kristo To: , , , CC: Subject: [PATCH 10/18] ARM: OMAP24xx: PRM: add API for clearing wakeup status bits Date: Tue, 4 Mar 2014 18:19:10 +0200 Message-ID: <1393949958-816-11-git-send-email-t-kristo@ti.com> X-Mailer: git-send-email 1.7.9.5 In-Reply-To: <1393949958-816-1-git-send-email-t-kristo@ti.com> References: <1393949958-816-1-git-send-email-t-kristo@ti.com> MIME-Version: 1.0 Sender: linux-omap-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-omap@vger.kernel.org X-Spam-Status: No, score=-6.9 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP This helps to isolate the PRM into its own driver. Signed-off-by: Tero Kristo --- arch/arm/mach-omap2/pm24xx.c | 31 +++++++++++++------------------ arch/arm/mach-omap2/prm2xxx.c | 18 ++++++++++++++++++ arch/arm/mach-omap2/prm2xxx.h | 1 + 3 files changed, 32 insertions(+), 18 deletions(-) diff --git a/arch/arm/mach-omap2/pm24xx.c b/arch/arm/mach-omap2/pm24xx.c index 2dbc30c..21fc935 100644 --- a/arch/arm/mach-omap2/pm24xx.c +++ b/arch/arm/mach-omap2/pm24xx.c @@ -75,9 +75,9 @@ static int omap2_enter_full_retention(void) /* Clear old wake-up events */ /* REVISIT: These write to reserved bits? */ - omap2_prm_write_mod_reg(0xffffffff, CORE_MOD, PM_WKST1); - omap2_prm_write_mod_reg(0xffffffff, CORE_MOD, OMAP24XX_PM_WKST2); - omap2_prm_write_mod_reg(0xffffffff, WKUP_MOD, PM_WKST); + omap2xxx_prm_clear_mod_irqs(CORE_MOD, PM_WKST1, ~0); + omap2xxx_prm_clear_mod_irqs(CORE_MOD, OMAP24XX_PM_WKST2, ~0); + omap2xxx_prm_clear_mod_irqs(WKUP_MOD, PM_WKST, ~0); pwrdm_set_next_pwrst(core_pwrdm, PWRDM_POWER_RET); pwrdm_set_next_pwrst(mpu_pwrdm, PWRDM_POWER_RET); @@ -104,23 +104,18 @@ no_sleep: clk_enable(osc_ck); /* clear CORE wake-up events */ - omap2_prm_write_mod_reg(0xffffffff, CORE_MOD, PM_WKST1); - omap2_prm_write_mod_reg(0xffffffff, CORE_MOD, OMAP24XX_PM_WKST2); + omap2xxx_prm_clear_mod_irqs(CORE_MOD, PM_WKST1, ~0); + omap2xxx_prm_clear_mod_irqs(CORE_MOD, OMAP24XX_PM_WKST2, ~0); /* wakeup domain events - bit 1: GPT1, bit5 GPIO */ - omap2_prm_clear_mod_reg_bits(0x4 | 0x1, WKUP_MOD, PM_WKST); + omap2xxx_prm_clear_mod_irqs(WKUP_MOD, PM_WKST, 0x4 | 0x1); /* MPU domain wake events */ - l = omap2_prm_read_mod_reg(OCP_MOD, OMAP2_PRCM_IRQSTATUS_MPU_OFFSET); - if (l & 0x01) - omap2_prm_write_mod_reg(0x01, OCP_MOD, - OMAP2_PRCM_IRQSTATUS_MPU_OFFSET); - if (l & 0x20) - omap2_prm_write_mod_reg(0x20, OCP_MOD, - OMAP2_PRCM_IRQSTATUS_MPU_OFFSET); + omap2xxx_prm_clear_mod_irqs(OCP_MOD, OMAP2_PRCM_IRQSTATUS_MPU_OFFSET, + 0x1); - /* Mask future PRCM-to-MPU interrupts */ - omap2_prm_write_mod_reg(0x0, OCP_MOD, OMAP2_PRCM_IRQSTATUS_MPU_OFFSET); + omap2xxx_prm_clear_mod_irqs(OCP_MOD, OMAP2_PRCM_IRQSTATUS_MPU_OFFSET, + 0x20); pwrdm_set_next_pwrst(mpu_pwrdm, PWRDM_POWER_ON); pwrdm_set_next_pwrst(core_pwrdm, PWRDM_POWER_ON); @@ -148,9 +143,9 @@ static void omap2_enter_mpu_retention(void) * it is in retention mode. */ if (omap2_allow_mpu_retention()) { /* REVISIT: These write to reserved bits? */ - omap2_prm_write_mod_reg(0xffffffff, CORE_MOD, PM_WKST1); - omap2_prm_write_mod_reg(0xffffffff, CORE_MOD, OMAP24XX_PM_WKST2); - omap2_prm_write_mod_reg(0xffffffff, WKUP_MOD, PM_WKST); + omap2xxx_prm_clear_mod_irqs(CORE_MOD, PM_WKST1, ~0); + omap2xxx_prm_clear_mod_irqs(CORE_MOD, OMAP24XX_PM_WKST2, ~0); + omap2xxx_prm_clear_mod_irqs(WKUP_MOD, PM_WKST, ~0); /* Try to enter MPU retention */ pwrdm_set_next_pwrst(mpu_pwrdm, PWRDM_POWER_RET); diff --git a/arch/arm/mach-omap2/prm2xxx.c b/arch/arm/mach-omap2/prm2xxx.c index 418de9c..12cf053 100644 --- a/arch/arm/mach-omap2/prm2xxx.c +++ b/arch/arm/mach-omap2/prm2xxx.c @@ -117,6 +117,24 @@ void omap2xxx_prm_dpll_reset(void) omap2_prm_read_mod_reg(WKUP_MOD, OMAP2_RM_RSTCTRL); } +/** + * omap2xxx_prm_clear_mod_irqs - clear wakeup status bits for a module + * @module: PRM module to clear wakeups from + * @regs: register offset to clear + * @wkst_mask: wakeup status mask to clear + * + * Clears wakeup status bits for a given module, so that the device can + * re-enter idle. + */ +void omap2xxx_prm_clear_mod_irqs(s16 module, u8 regs, u32 wkst_mask) +{ + u32 wkst; + + wkst = omap2_prm_read_mod_reg(module, regs); + wkst &= wkst_mask; + omap2_prm_write_mod_reg(wkst, module, regs); +} + int omap2xxx_clkdm_sleep(struct clockdomain *clkdm) { omap2_prm_set_mod_reg_bits(OMAP24XX_FORCESTATE_MASK, diff --git a/arch/arm/mach-omap2/prm2xxx.h b/arch/arm/mach-omap2/prm2xxx.h index 3194dd8..e0e17b8 100644 --- a/arch/arm/mach-omap2/prm2xxx.h +++ b/arch/arm/mach-omap2/prm2xxx.h @@ -125,6 +125,7 @@ extern int omap2xxx_clkdm_sleep(struct clockdomain *clkdm); extern int omap2xxx_clkdm_wakeup(struct clockdomain *clkdm); extern void omap2xxx_prm_dpll_reset(void); +void omap2xxx_prm_clear_mod_irqs(s16 module, u8 regs, u32 wkst_mask); extern int __init omap2xxx_prm_init(void);