From patchwork Fri Oct 18 22:21:06 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Tony Lindgren X-Patchwork-Id: 11199781 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 4342D1390 for ; Fri, 18 Oct 2019 22:21:29 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 2243D21852 for ; Fri, 18 Oct 2019 22:21:29 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729186AbfJRWV1 (ORCPT ); Fri, 18 Oct 2019 18:21:27 -0400 Received: from muru.com ([72.249.23.125]:38192 "EHLO muru.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2404730AbfJRWV1 (ORCPT ); Fri, 18 Oct 2019 18:21:27 -0400 Received: from hillo.muru.com (localhost [127.0.0.1]) by muru.com (Postfix) with ESMTP id 1002D8168; Fri, 18 Oct 2019 22:22:00 +0000 (UTC) From: Tony Lindgren To: linux-omap@vger.kernel.org Cc: linux-arm-kernel@lists.infradead.org, Merlijn Wajer , Pavel Machek , Sebastian Reichel Subject: [PATCH 1/2] ARM: OMAP2+: Configure voltage controller for retention Date: Fri, 18 Oct 2019 15:21:06 -0700 Message-Id: <20191018222107.32917-2-tony@atomide.com> X-Mailer: git-send-email 2.23.0 In-Reply-To: <20191018222107.32917-1-tony@atomide.com> References: <20191018222107.32917-1-tony@atomide.com> MIME-Version: 1.0 Sender: linux-omap-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-omap@vger.kernel.org Similar to existing omap3_vc_set_pmic_signaling(), let's add omap4 specific omap4_vc_set_pmic_signaling(). This allows the configured devices to enable voltage controller for retention later on during init. Cc: Merlijn Wajer Cc: Pavel Machek Cc: Sebastian Reichel Signed-off-by: Tony Lindgren --- arch/arm/mach-omap2/vc.c | 32 +++++++++++++++++++++++++++++--- arch/arm/mach-omap2/vc.h | 2 +- 2 files changed, 30 insertions(+), 4 deletions(-) diff --git a/arch/arm/mach-omap2/vc.c b/arch/arm/mach-omap2/vc.c --- a/arch/arm/mach-omap2/vc.c +++ b/arch/arm/mach-omap2/vc.c @@ -36,15 +36,21 @@ #define OMAP4430_AUTO_CTRL_VDD_CORE(x) ((x) << 0) #define OMAP4430_AUTO_CTRL_VDD_RET 2 -#define OMAP4_VDD_DEFAULT_VAL \ +#define OMAP4430_VDD_I2C_DISABLE_MASK \ (OMAP4430_VDD_IVA_I2C_DISABLE | \ - OMAP4430_VDD_MPU_I2C_DISABLE | \ - OMAP4430_VDD_CORE_I2C_DISABLE | \ + OMAP4430_VDD_MPU_I2C_DISABLE | \ + OMAP4430_VDD_CORE_I2C_DISABLE) + +#define OMAP4_VDD_DEFAULT_VAL \ + (OMAP4430_VDD_I2C_DISABLE_MASK | \ OMAP4430_VDD_IVA_PRESENCE | OMAP4430_VDD_MPU_PRESENCE | \ OMAP4430_AUTO_CTRL_VDD_IVA(OMAP4430_AUTO_CTRL_VDD_RET) | \ OMAP4430_AUTO_CTRL_VDD_MPU(OMAP4430_AUTO_CTRL_VDD_RET) | \ OMAP4430_AUTO_CTRL_VDD_CORE(OMAP4430_AUTO_CTRL_VDD_RET)) +#define OMAP4_VDD_RET_VAL \ + (OMAP4_VDD_DEFAULT_VAL & ~OMAP4430_VDD_I2C_DISABLE_MASK) + /** * struct omap_vc_channel_cfg - describe the cfg_channel bitfield * @sa: bit for slave address @@ -299,6 +305,26 @@ void omap3_vc_set_pmic_signaling(int core_next_state) } } +void omap4_vc_set_pmic_signaling(int core_next_state) +{ + struct voltagedomain *vd = vc.vd; + u32 val; + + if (!vd) + return; + + switch (core_next_state) { + case PWRDM_POWER_RET: + val = OMAP4_VDD_RET_VAL; + break; + default: + val = OMAP4_VDD_DEFAULT_VAL; + break; + } + + vd->write(val, OMAP4_PRM_VOLTCTRL_OFFSET); +} + /* * Configure signal polarity for sys_clkreq and sys_off_mode pins * as the default values are wrong and can cause the system to hang diff --git a/arch/arm/mach-omap2/vc.h b/arch/arm/mach-omap2/vc.h --- a/arch/arm/mach-omap2/vc.h +++ b/arch/arm/mach-omap2/vc.h @@ -117,7 +117,7 @@ extern struct omap_vc_param omap4_iva_vc_data; extern struct omap_vc_param omap4_core_vc_data; void omap3_vc_set_pmic_signaling(int core_next_state); - +void omap4_vc_set_pmic_signaling(int core_next_state); void omap_vc_init_channel(struct voltagedomain *voltdm); int omap_vc_pre_scale(struct voltagedomain *voltdm,