From patchwork Wed Aug 30 15:13:44 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sricharan Ramabadhran X-Patchwork-Id: 9929985 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id DFF5760309 for ; Wed, 30 Aug 2017 15:14:54 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id CCA45286AD for ; Wed, 30 Aug 2017 15:14:54 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id C1167286B7; Wed, 30 Aug 2017 15:14:54 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.8 required=2.0 tests=BAYES_00,DKIM_SIGNED, RCVD_IN_DNSWL_HI,T_DKIM_INVALID autolearn=unavailable version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 2AB57286BA for ; Wed, 30 Aug 2017 15:14:54 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751859AbdH3POk (ORCPT ); Wed, 30 Aug 2017 11:14:40 -0400 Received: from smtp.codeaurora.org ([198.145.29.96]:49126 "EHLO smtp.codeaurora.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751740AbdH3POY (ORCPT ); Wed, 30 Aug 2017 11:14:24 -0400 Received: by smtp.codeaurora.org (Postfix, from userid 1000) id 1D8F3607CF; Wed, 30 Aug 2017 15:14:22 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=codeaurora.org; s=default; t=1504106063; bh=MukOiIcoafQ6ot7pNhf8ZQURVTowS9bK6vNUoPDNTQg=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=njEGEvjty2gGXkt/Dzso7zV9u6ebhkAyBXV80mGfdNSgFTK0h1X20h6oI3+gh+p3x vwpi+8Zd2oA25gMeVtV1Fr2jHb6iAE+s7D5XWis3Z8r6IutEKygLF4s6XMAspodK67 RPuGUPKpJmA+Ljt8KOc9IhXCVdBMc+q5U7zpRN0Y= Received: from srichara-linux.qualcomm.com (blr-c-bdr-fw-01_globalnat_allzones-outside.qualcomm.com [103.229.19.19]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-SHA256 (128/128 bits)) (No client certificate requested) (Authenticated sender: sricharan@smtp.codeaurora.org) by smtp.codeaurora.org (Postfix) with ESMTPSA id BDB76607BE; Wed, 30 Aug 2017 15:14:17 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=codeaurora.org; s=default; t=1504106061; bh=MukOiIcoafQ6ot7pNhf8ZQURVTowS9bK6vNUoPDNTQg=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=obo3riLwgr4lFbA4Tcq/mCRXbjTYHg2SQST7NT2Y2N3s7W6ziNk1ACqnn7ORs+auL QiegOz94BPSGc6nWG6bQwN7gheI/t8tZ8awBpZbYjpYlc/gfgU156+FCWpJhu2ahyz 8+BJW1hBcko+jgdQ0xaLKEYDXe0oZFepY/169iaE= DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org BDB76607BE Authentication-Results: pdx-caf-mail.web.codeaurora.org; dmarc=none (p=none dis=none) header.from=codeaurora.org Authentication-Results: pdx-caf-mail.web.codeaurora.org; spf=none smtp.mailfrom=sricharan@codeaurora.org From: Sricharan R To: bjorn.andersson@linaro.org, ohad@wizery.com, robh+dt@kernel.org, mark.rutland@arm.com, andy.gross@linaro.org, david.brown@linaro.org, linux-remoteproc@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org, linux-soc@vger.kernel.org Cc: sricharan@codeaurora.org Subject: [PATCH v2 6/6] remoteproc: qcom: Add q6v5-wcss rproc ops Date: Wed, 30 Aug 2017 20:43:44 +0530 Message-Id: <1504106024-23569-7-git-send-email-sricharan@codeaurora.org> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1504106024-23569-1-git-send-email-sricharan@codeaurora.org> References: <1504106024-23569-1-git-send-email-sricharan@codeaurora.org> Sender: linux-remoteproc-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-remoteproc@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP q6v5-wcss core's start function is mostly common with the q6v5 of msm8996. So reuse that and add the stop function. Signed-off-by: Sricharan R --- drivers/remoteproc/qcom_q6v5_pil.c | 212 +++++++++++++++++++++++++++++++++++++ 1 file changed, 212 insertions(+) diff --git a/drivers/remoteproc/qcom_q6v5_pil.c b/drivers/remoteproc/qcom_q6v5_pil.c index 8da1cc7..5661487 100644 --- a/drivers/remoteproc/qcom_q6v5_pil.c +++ b/drivers/remoteproc/qcom_q6v5_pil.c @@ -104,6 +104,17 @@ #define QDSP6SS_XO_CBCR 0x0038 #define QDSP6SS_ACC_OVERRIDE_VAL 0x20 +/* QDSP6v5-WCSS config/status registers */ +#define TCSR_GLOBAL_CFG0 0x0 +#define TCSR_GLOBAL_CFG1 0x4 +#define SSCAON_CONFIG 0x8 +#define SSCAON_STATUS 0xc +#define QDSP6SS_BHS_STATUS 0x78 +#define QDSP6SS_RST_EVB 0x10 + +#define BHS_EN_REST_ACK BIT(0) +#define SSCAON_ENABLE BIT(13) + struct reg_info { struct regulator *reg; int uV; @@ -774,6 +785,61 @@ static int q6v5_mpss_load(struct q6v5 *qproc) return ret < 0 ? ret : 0; } +static int q6v5_wcss_start(struct rproc *rproc) +{ + struct q6v5 *qproc = rproc->priv; + int ret = 0; + + ret = q6v5_clk_enable(qproc->dev, qproc->active_clks, + qproc->active_clk_count); + if (ret) { + dev_err(qproc->dev, "failed to enable clocks\n"); + return ret; + } + + /* Release Q6 and WCSS reset */ + ret = reset_control_deassert(qproc->wcss_reset); + if (ret) + dev_err(qproc->dev, "wcss_reset failed\n"); + + ret = reset_control_deassert(qproc->wcss_q6_reset); + if (ret) + dev_err(qproc->dev, "wcss_q6_reset failed\n"); + + /* Lithium configuration - clock gating and bus arbitration */ + ret = regmap_update_bits(qproc->halt_map, + qproc->halt_nc + TCSR_GLOBAL_CFG0, + 0x1F, 0x14); + if (ret) + return ret; + + ret = regmap_update_bits(qproc->halt_map, + qproc->halt_nc + TCSR_GLOBAL_CFG1, + 1, 0); + if (ret) + return ret; + + /* Write bootaddr to EVB so that Q6WCSS will jump there after reset */ + writel(rproc->bootaddr >> 4, qproc->reg_base + QDSP6SS_RST_EVB); + + ret = q6v5_reset(qproc); + if (ret) + return ret; + + q6v5_reset_rest(qproc); + + ret = wait_for_completion_timeout(&qproc->start_done, + msecs_to_jiffies(5000)); + if (ret == 0) { + dev_err(qproc->dev, "start timed out\n"); + return -ETIMEDOUT; + } + + qproc->running = true; + + return 0; +} + static int q6v5_start(struct rproc *rproc) { struct q6v5 *qproc = (struct q6v5 *)rproc->priv; @@ -893,6 +959,146 @@ static int q6v5_start(struct rproc *rproc) return ret; } +static int q6v5_wcss_powerdown(struct q6v5 *qproc) +{ + unsigned int val = 0; + int ret; + + /* 1 - Assert WCSS/Q6 HALTREQ */ + q6v5proc_halt_axi_port(qproc, qproc->halt_map, qproc->halt_modem); + + /* 2 - Enable WCSSAON_CONFIG */ + val = readl(qproc->rmb_base + SSCAON_CONFIG); + val |= SSCAON_ENABLE; + writel(val, qproc->rmb_base + SSCAON_CONFIG); + + /* 3 - Set SSCAON_CONFIG */ + val |= BIT(15); + val &= ~BIT(16); + val &= ~BIT(17); + val &= ~BIT(18); + writel(val, qproc->rmb_base + SSCAON_CONFIG); + + /* 4 - SSCAON_CONFIG 1 */ + val |= BIT(1); + writel(val, qproc->rmb_base + SSCAON_CONFIG); + + /* 5 - wait for SSCAON_STATUS */ + ret = readl_poll_timeout(qproc->rmb_base + SSCAON_STATUS, + val, (val & 0xffff) == 0x400, 1000, + HALT_CHECK_MAX_LOOPS); + if (ret) { + dev_err(qproc->dev, + "can't get SSCAON_STATUS rc:%d)\n", ret); + } + + /* 6 - De-assert WCSS_AON reset */ + reset_control_assert(qproc->wcss_aon_reset); + + /* 7 - Disable WCSSAON_CONFIG 13 */ + val = readl(qproc->rmb_base + SSCAON_CONFIG); + val &= ~SSCAON_ENABLE; + writel(val, qproc->rmb_base + SSCAON_CONFIG); + + /* 8 - De-assert WCSS/Q6 HALTREQ */ + reset_control_assert(qproc->wcss_reset); + + return ret; +} + +static int q6v5_q6_powerdown(struct q6v5 *qproc) +{ + int i = 0, ret; + unsigned int val = 0; + + /* 1 - Halt Q6 bus interface */ + q6v5proc_halt_axi_port(qproc, qproc->halt_map, qproc->halt_q6); + + /* 2 - Disable Q6 Core clock */ + val = readl(qproc->reg_base + QDSP6SS_GFMUX_CTL_REG); + val &= ~Q6SS_CLK_ENABLE; + writel(val, qproc->reg_base + QDSP6SS_GFMUX_CTL_REG); + + /* 3 - Clamp I/O */ + val = readl(qproc->reg_base + QDSP6SS_PWR_CTL_REG); + val |= Q6SS_CLAMP_IO; + writel(val, qproc->reg_base + QDSP6SS_PWR_CTL_REG); + + /* 4 - Clamp WL */ + val |= QDSS_BHS_ON; + writel(val, qproc->reg_base + QDSP6SS_PWR_CTL_REG); + + /* 5 - Clear Erase standby */ + val &= ~Q6SS_L2DATA_STBY_N; + writel(val, qproc->reg_base + QDSP6SS_PWR_CTL_REG); + + /* 6 - Clear Sleep RTN */ + val &= ~Q6SS_SLP_RET_N; + writel(val, qproc->reg_base + QDSP6SS_PWR_CTL_REG); + + /* 7 - turn off QDSP6 memory foot/head switch one bank at a time */ + for (i = 0; i < 20; i++) { + val = readl(qproc->reg_base + QDSP6SS_MEM_PWR_CTL); + val &= ~BIT(i); + writel(val, qproc->reg_base + QDSP6SS_MEM_PWR_CTL); + mdelay(1); + } + /* 8 - Assert QMC memory RTN */ + val = readl(qproc->reg_base + QDSP6SS_PWR_CTL_REG); + val |= QDSP6v56_CLAMP_QMC_MEM; + writel(val, qproc->reg_base + QDSP6SS_PWR_CTL_REG); + + /* 9 - Turn off BHS */ + val &= ~QDSP6v56_BHS_ON; + writel(val, qproc->reg_base + QDSP6SS_PWR_CTL_REG); + udelay(1); + /* 10 - Wait till BHS Reset is done */ + ret = readl_poll_timeout(qproc->reg_base + QDSP6SS_BHS_STATUS, + val, !(val & BHS_EN_REST_ACK), 1000, + HALT_CHECK_MAX_LOOPS); + if (ret) { + dev_err(qproc->dev, + "BHS_STATUS not OFF (rc:%d)\n", ret); + } + + /* 11 - Enable Q6 Block reset */ + reset_control_assert(qproc->wcss_q6_reset); + + return 0; +} + +static int q6v5_wcss_stop(struct rproc *rproc) +{ + struct q6v5 *qproc = rproc->priv; + int ret = 0; + + qproc->running = false; + + /* WCSS powerdown */ + qcom_smem_state_update_bits(qproc->state, BIT(qproc->stop_bit), + BIT(qproc->stop_bit)); + + ret = wait_for_completion_timeout(&qproc->stop_done, + msecs_to_jiffies(5000)); + if (ret == 0) { + dev_err(qproc->dev, "timed out on wait\n"); + return -ETIMEDOUT; + } + + qcom_smem_state_update_bits(qproc->state, BIT(qproc->stop_bit), 0); + + ret = q6v5_wcss_powerdown(qproc); + if (ret) + return ret; + + /* Q6 Power down */ + ret = q6v5_q6_powerdown(qproc); + if (ret) + return ret; + + return 0; +} + static int q6v5_stop(struct rproc *rproc) { struct q6v5 *qproc = (struct q6v5 *)rproc->priv; @@ -954,6 +1160,11 @@ static void *q6v5_da_to_va(struct rproc *rproc, u64 da, int len) .da_to_va = q6v5_da_to_va, }; +static const struct rproc_ops q6v5_wcss_ops = { + .start = q6v5_wcss_start, + .stop = q6v5_wcss_stop, +}; + static irqreturn_t q6v5_wdog_interrupt(int irq, void *dev) { struct q6v5 *qproc = dev; @@ -1400,6 +1611,7 @@ static int q6v5_remove(struct platform_device *pdev) .version = WCSS_IPQ8074, .init_reset = q6v5_wcss_init_reset, .fw_ops = &q6v5_wcss_fw_ops, + .ops = &q6v5_wcss_ops, }; static const struct of_device_id q6v5_of_match[] = {