From patchwork Fri May 8 18:27:01 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Manivannan Sadhasivam X-Patchwork-Id: 11537351 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 C3E2E913 for ; Fri, 8 May 2020 18:27:27 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id A6C8D2173E for ; Fri, 8 May 2020 18:27:27 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=linaro.org header.i=@linaro.org header.b="tEdh6teJ" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727122AbgEHS10 (ORCPT ); Fri, 8 May 2020 14:27:26 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:56938 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S1727789AbgEHS10 (ORCPT ); Fri, 8 May 2020 14:27:26 -0400 Received: from mail-pg1-x544.google.com (mail-pg1-x544.google.com [IPv6:2607:f8b0:4864:20::544]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id C069CC05BD0A for ; Fri, 8 May 2020 11:27:24 -0700 (PDT) Received: by mail-pg1-x544.google.com with SMTP id 207so1237107pgc.6 for ; Fri, 08 May 2020 11:27:24 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=FPmqoCXX36w4GNczlcEbzhCF5NhaIu3IfGEPKdSsIJg=; b=tEdh6teJdWxWwOZfwMnhMq2HWT1f4CEEU7n1RmhTwKCkHufLGPaswfGUAEV8ZpCWoo i0l7+VESYpg9DDsy24alcVpRwIIm64YZB/hu8vxML8DO1Uw3l33usrtChwu5VblA4JTR RKH33A/BAgobJ0PkLNflputiPlQzJvcUCY6U1C0U5rlJpwgHntmZzpl/+ysRAaZIgEqb 7WzxLaAmjjKS1EPQaB5gR6Ek3tjVG5zALcfG77gELS5dqIhkzPmEAxUXqaK1T6PiiBXB EXUHs+a6NYAEZ/bzFuaPrpj8x2n5nrR4JQPNWJ/8F+amqVCpliEkWOTr+YTnTpC7jADk cqXw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=FPmqoCXX36w4GNczlcEbzhCF5NhaIu3IfGEPKdSsIJg=; b=bzEdae4ID1nRlIrsjf7Wc3HTI0ZS7wkSZt+rpRtoXX2Ln6IYHuJcGB8r9W3xl5sssQ yALMPDOBMKdaFxFM6YA8gsHWLZjzdbY/L7Q5acqSVjS6M2LHy5bgeXT5umsSenIaT3ol A9iv+ZIUyDtbndC6Bc6/YAWrOnDx0t0z5D/wkyCLsIngkad52WxYK5u5w77qNmcozqHb ZsGL3RvaplPulyMktmyJlO03CKL8BOZh3RRyXOr/iNj0vhanam/caQSFxLOd+QIXou6h n2+Qvb+Jh23SsLg2bAJksM1RjoV5brAJ30/9xkHtoGQjKBquoBiX1jbZtWNmsUFn5ZrA CeSg== X-Gm-Message-State: AGi0PuZ8zVwrH7NwR4Tsi4t5yJHUe+Zhon+/FoNYm7xoFsJxGCEA+oAp WCVBI1+RngHp46J37gIzt8AZ X-Google-Smtp-Source: APiQypLpzEWwMMWWU3xte7NCk2pv5KpSKutlVWaAaQKWZaM8bP9nRqaJOgWFk1Z9X3nSnQFP6pj2lg== X-Received: by 2002:a63:a1b:: with SMTP id 27mr3231310pgk.423.1588962444103; Fri, 08 May 2020 11:27:24 -0700 (PDT) Received: from localhost.localdomain ([2409:4072:9e:e39a:a052:f8c0:a37b:3255]) by smtp.gmail.com with ESMTPSA id y24sm2248379pfn.211.2020.05.08.11.27.20 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 08 May 2020 11:27:23 -0700 (PDT) From: Manivannan Sadhasivam To: jassisinghbrar@gmail.com, robh+dt@kernel.org Cc: bjorn.andersson@linaro.org, linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, Manivannan Sadhasivam Subject: [PATCH v2 1/3] dt-bindings: mailbox: Add devicetree binding for Qcom IPCC Date: Fri, 8 May 2020 23:57:01 +0530 Message-Id: <20200508182703.29021-2-manivannan.sadhasivam@linaro.org> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200508182703.29021-1-manivannan.sadhasivam@linaro.org> References: <20200508182703.29021-1-manivannan.sadhasivam@linaro.org> Sender: linux-arm-msm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org Add devicetree YAML binding for Qualcomm Inter-Processor Communication Controller (IPCC) block. Signed-off-by: Manivannan Sadhasivam Reviewed-by: Bjorn Andersson --- .../bindings/mailbox/qcom-ipcc.yaml | 77 +++++++++++++++++++ include/dt-bindings/mailbox/qcom-ipcc.h | 33 ++++++++ 2 files changed, 110 insertions(+) create mode 100644 Documentation/devicetree/bindings/mailbox/qcom-ipcc.yaml create mode 100644 include/dt-bindings/mailbox/qcom-ipcc.h diff --git a/Documentation/devicetree/bindings/mailbox/qcom-ipcc.yaml b/Documentation/devicetree/bindings/mailbox/qcom-ipcc.yaml new file mode 100644 index 000000000000..62e7bc8ceb0b --- /dev/null +++ b/Documentation/devicetree/bindings/mailbox/qcom-ipcc.yaml @@ -0,0 +1,77 @@ +# SPDX-License-Identifier: GPL-2.0 OR BSD-2-Clause +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/mailbox/qcom-ipcc.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Qualcomm Technologies, Inc. Inter-Processor Communication Controller + +maintainers: + - Manivannan Sadhasivam + +description: + The Inter-Processor Communication Controller (IPCC) is a centralized hardware + to route interrupts across various subsystems. It involves a three-level + addressing scheme called protocol, client and signal. For example, consider an + entity on the Application Processor Subsystem (APSS) that wants to listen to + Modem's interrupts via Shared Memory Point to Point (SMP2P) interface. In such + a case, the client would be Modem (client-id is 2) and the signal would be + SMP2P (signal-id is 2). The SMP2P itself falls under the Multiprocessor (MPROC) + protocol (protocol-id is 0). Refer include/dt-bindings/mailbox/qcom-ipcc.h + for the list of such IDs. + +properties: + compatible: + const: "qcom,ipcc" + + reg: + maxItems: 1 + + interrupts: + maxItems: 1 + + interrupt-controller: true + + "#interrupt-cells": + const: 3 + description: + The first cell is the client-id, the second cell is the signal-id and the + third cell is the interrupt type. + + "#mbox-cells": + const: 2 + description: + The first cell is the client-id, and the second cell is the signal-id. + +required: + - compatible + - reg + - interrupts + - interrupt-controller + - "#interrupt-cells" + - "#mbox-cells" + +additionalProperties: false + +examples: + - | + #include + #include + + mailbox: qcom,ipcc@408000 { + compatible = "qcom,ipcc"; + reg = <0x408000 0x1000>; + interrupts = ; + interrupt-controller; + #interrupt-cells = <3>; + #mbox-cells = <2>; + }; + + smp2p-modem { + compatible = "qcom,smp2p"; + interrupts-extended = <&ipcc_mproc IPCC_CLIENT_MPSS + IPCC_MPROC_SIGNAL_SMP2P IRQ_TYPE_EDGE_RISING>; + mboxes = <&ipcc_mproc IPCC_CLIENT_MPSS IPCC_MPROC_SIGNAL_SMP2P>; + + /* Other SMP2P fields */ + }; diff --git a/include/dt-bindings/mailbox/qcom-ipcc.h b/include/dt-bindings/mailbox/qcom-ipcc.h new file mode 100644 index 000000000000..b8c04f6df57c --- /dev/null +++ b/include/dt-bindings/mailbox/qcom-ipcc.h @@ -0,0 +1,33 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * Copyright (c) 2018-2020, The Linux Foundation. All rights reserved. + */ + +#ifndef __DT_BINDINGS_MAILBOX_IPCC_H +#define __DT_BINDINGS_MAILBOX_IPCC_H + +/* Signal IDs for MPROC protocol */ +#define IPCC_MPROC_SIGNAL_GLINK_QMP 0 +#define IPCC_MPROC_SIGNAL_SMP2P 2 +#define IPCC_MPROC_SIGNAL_PING 3 + +/* Client IDs */ +#define IPCC_CLIENT_AOP 0 +#define IPCC_CLIENT_TZ 1 +#define IPCC_CLIENT_MPSS 2 +#define IPCC_CLIENT_LPASS 3 +#define IPCC_CLIENT_SLPI 4 +#define IPCC_CLIENT_SDC 5 +#define IPCC_CLIENT_CDSP 6 +#define IPCC_CLIENT_NPU 7 +#define IPCC_CLIENT_APSS 8 +#define IPCC_CLIENT_GPU 9 +#define IPCC_CLIENT_CVP 10 +#define IPCC_CLIENT_CAM 11 +#define IPCC_CLIENT_VPU 12 +#define IPCC_CLIENT_PCIE0 13 +#define IPCC_CLIENT_PCIE1 14 +#define IPCC_CLIENT_PCIE2 15 +#define IPCC_CLIENT_SPSS 16 + +#endif From patchwork Fri May 8 18:27:02 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Manivannan Sadhasivam X-Patchwork-Id: 11537353 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 82E9315AB for ; Fri, 8 May 2020 18:27:34 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 5F9242173E for ; Fri, 8 May 2020 18:27:33 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=linaro.org header.i=@linaro.org header.b="xtkrUb/E" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727086AbgEHS1c (ORCPT ); Fri, 8 May 2020 14:27:32 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:56954 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S1727838AbgEHS1b (ORCPT ); Fri, 8 May 2020 14:27:31 -0400 Received: from mail-pg1-x542.google.com (mail-pg1-x542.google.com [IPv6:2607:f8b0:4864:20::542]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 3EBC6C061A0C for ; Fri, 8 May 2020 11:27:30 -0700 (PDT) Received: by mail-pg1-x542.google.com with SMTP id s18so1224563pgl.12 for ; Fri, 08 May 2020 11:27:30 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=GpgunCHQbxm0zoLWFBDdTBEAgeAYqWPT7SzpoXujKxI=; b=xtkrUb/EDEmqwOLP6w5Vr2TFKE5+p6xI++bdvLHFa8W/wCq9aah2tVL8vQ05E42Dj5 AZcdeFpEaoaMBe84K6d5wD6RjPPRZbdRTcvrr34pWH+jYrYv0oHt2/br5NMss6LPAlo8 UiiaHsVI81G/wcY6RrkelpvwNGQV6P+puH6/El/cjmOcfaVUZnjXNFtI7ci56efe2LID kXwYNTw6blLC8uUuOq8B7KZwaubbW96ptq1BC/qs8gKCSZSdVzKfV+aUE+NDIG1nQjXH SCv4tHOwH8dLcdK4gKudMFnIhyjCH+Ym39g1pjmdJZi4dQzxyr5KYIXpTQGlFkoAwHZU 9iiw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=GpgunCHQbxm0zoLWFBDdTBEAgeAYqWPT7SzpoXujKxI=; b=hXddvStVOUWAH4HlLcDBjzWqLJw90t51RONVQa/BqbL0ySaMcrLvNmpBujjzkupMJ2 mYgV/10paZ3tg2X7Q9J9ZTJkrFiW1/rnGdJpC4WcKYOG00PoJTAqRegRvNQGq05WkMNa 5c55EpoNg6f18r8XvohLaN8ouMOJgH4wj31gEmHhuDJJmQlwfH3NXGVDfHPSWbnjNL0F GVZ0S7jisafjk50Z231D8o4rJTGrsQP0+3CGO346tMK8dhucdxfaXsdXyj7ewNx4M+HV clAq25TtJjNJrFQg2UlkcVv11gwYw6XC/7blJdQ6A8OTXcbbwNM/MKUmGPQwZe7Aqx2+ awYQ== X-Gm-Message-State: AGi0PuZzwugrrExsM1PNKKhcs4FPw5Zbqlu3Uf/YmoOheI3weXjP3njH FXuKinAk7k6XTjmxTqwD0EnQ X-Google-Smtp-Source: APiQypLy7cqBWdXc8UYHNMr05C3eDKQLvQSH5kx4wYpCPDhOXKLYAaQVGqrxKwTxBRIO2cMqKizUsQ== X-Received: by 2002:a63:5a41:: with SMTP id k1mr3345307pgm.424.1588962449570; Fri, 08 May 2020 11:27:29 -0700 (PDT) Received: from localhost.localdomain ([2409:4072:9e:e39a:a052:f8c0:a37b:3255]) by smtp.gmail.com with ESMTPSA id y24sm2248379pfn.211.2020.05.08.11.27.24 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 08 May 2020 11:27:29 -0700 (PDT) From: Manivannan Sadhasivam To: jassisinghbrar@gmail.com, robh+dt@kernel.org Cc: bjorn.andersson@linaro.org, linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, Manivannan Sadhasivam , Raghavendra Rao Ananta , Venkata Narendra Kumar Gutta Subject: [PATCH v2 2/3] mailbox: Add support for Qualcomm IPCC Date: Fri, 8 May 2020 23:57:02 +0530 Message-Id: <20200508182703.29021-3-manivannan.sadhasivam@linaro.org> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200508182703.29021-1-manivannan.sadhasivam@linaro.org> References: <20200508182703.29021-1-manivannan.sadhasivam@linaro.org> Sender: linux-arm-msm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org Add support for the Inter-Processor Communication Controller (IPCC) block from Qualcomm that coordinates the interrupts (inbound & outbound) for Multiprocessor (MPROC), COMPUTE-Level0 (COMPUTE-L0) & COMPUTE-Level1 (COMPUTE-L1) protocols for the Application Processor Subsystem (APSS). This driver is modeled as an irqchip+mailbox driver. The irqchip part helps in receiving the interrupts from the IPCC clients such as modems, DSPs, PCI-E etc... and forwards them to respective entities in APSS. On the other hand, the mailbox part is used to send interrupts to the IPCC clients from the entities of APSS. Signed-off-by: Raghavendra Rao Ananta Signed-off-by: Venkata Narendra Kumar Gutta Signed-off-by: Bjorn Andersson [mani: moved to mailbox, added static mbox channels and cleanups] Signed-off-by: Manivannan Sadhasivam Reviewed-by: Bjorn Andersson --- drivers/mailbox/Kconfig | 10 ++ drivers/mailbox/Makefile | 2 + drivers/mailbox/qcom-ipcc.c | 286 ++++++++++++++++++++++++++++++++++++ 3 files changed, 298 insertions(+) create mode 100644 drivers/mailbox/qcom-ipcc.c diff --git a/drivers/mailbox/Kconfig b/drivers/mailbox/Kconfig index 5a577a6734cf..8e1ebdbf8eab 100644 --- a/drivers/mailbox/Kconfig +++ b/drivers/mailbox/Kconfig @@ -236,4 +236,14 @@ config SUN6I_MSGBOX various Allwinner SoCs. This mailbox is used for communication between the application CPUs and the power management coprocessor. +config QCOM_IPCC + bool "Qualcomm Technologies, Inc. IPCC driver" + depends on ARCH_QCOM || COMPILE_TEST + help + Qualcomm Technologies, Inc. Inter-Processor Communication Controller + (IPCC) driver for MSM devices. The driver provides mailbox support for + sending interrupts to the clients. On the other hand, the driver also + acts as an interrupt controller for receiving interrupts from clients. + Say Y here if you want to build this driver. + endif diff --git a/drivers/mailbox/Makefile b/drivers/mailbox/Makefile index 2e4364ef5c47..20b66b2219aa 100644 --- a/drivers/mailbox/Makefile +++ b/drivers/mailbox/Makefile @@ -50,3 +50,5 @@ obj-$(CONFIG_MTK_CMDQ_MBOX) += mtk-cmdq-mailbox.o obj-$(CONFIG_ZYNQMP_IPI_MBOX) += zynqmp-ipi-mailbox.o obj-$(CONFIG_SUN6I_MSGBOX) += sun6i-msgbox.o + +obj-$(CONFIG_QCOM_IPCC) += qcom-ipcc.o diff --git a/drivers/mailbox/qcom-ipcc.c b/drivers/mailbox/qcom-ipcc.c new file mode 100644 index 000000000000..2d13c72944c6 --- /dev/null +++ b/drivers/mailbox/qcom-ipcc.c @@ -0,0 +1,286 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Copyright (c) 2018-2020, The Linux Foundation. All rights reserved. + */ + +#include +#include +#include +#include +#include +#include +#include + +#include + +#define IPCC_MBOX_MAX_CHAN 48 + +/* IPCC Register offsets */ +#define IPCC_REG_SEND_ID 0x0c +#define IPCC_REG_RECV_ID 0x10 +#define IPCC_REG_RECV_SIGNAL_ENABLE 0x14 +#define IPCC_REG_RECV_SIGNAL_DISABLE 0x18 +#define IPCC_REG_RECV_SIGNAL_CLEAR 0x1c +#define IPCC_REG_CLIENT_CLEAR 0x38 + +#define IPCC_SIGNAL_ID_MASK GENMASK(15, 0) +#define IPCC_CLIENT_ID_MASK GENMASK(31, 16) + +#define IPCC_NO_PENDING_IRQ GENMASK(31, 0) + +/** + * struct qcom_ipcc_chan_info - Per-mailbox-channel info + * @client_id: The client-id to which the interrupt has to be triggered + * @signal_id: The signal-id to which the interrupt has to be triggered + */ +struct qcom_ipcc_chan_info { + u16 client_id; + u16 signal_id; +}; + +/** + * struct qcom_ipcc - Holder for the mailbox driver + * @dev: Device associated with this instance + * @base: Base address of the IPCC frame associated to APSS + * @irq_domain: The irq_domain associated with this instance + * @chan: The mailbox channels array + * @mchan: The per-mailbox channel info array + * @mbox: The mailbox controller + * @irq: Summary irq + */ +struct qcom_ipcc { + struct device *dev; + void __iomem *base; + struct irq_domain *irq_domain; + struct mbox_chan chan[IPCC_MBOX_MAX_CHAN]; + struct qcom_ipcc_chan_info mchan[IPCC_MBOX_MAX_CHAN]; + struct mbox_controller mbox; + int irq; +}; + +static inline struct qcom_ipcc *to_qcom_ipcc(struct mbox_controller *mbox) +{ + return container_of(mbox, struct qcom_ipcc, mbox); +} + +static inline u32 qcom_ipcc_get_hwirq(u16 client_id, u16 signal_id) +{ + return FIELD_PREP(IPCC_CLIENT_ID_MASK, client_id) | + FIELD_PREP(IPCC_SIGNAL_ID_MASK, signal_id); +} + +static irqreturn_t qcom_ipcc_irq_fn(int irq, void *data) +{ + struct qcom_ipcc *ipcc = data; + u32 hwirq; + int virq; + + for (;;) { + hwirq = readl(ipcc->base + IPCC_REG_RECV_ID); + if (hwirq == IPCC_NO_PENDING_IRQ) + break; + + virq = irq_find_mapping(ipcc->irq_domain, hwirq); + writel(hwirq, ipcc->base + IPCC_REG_RECV_SIGNAL_CLEAR); + generic_handle_irq(virq); + } + + return IRQ_HANDLED; +} + +static void qcom_ipcc_mask_irq(struct irq_data *irqd) +{ + struct qcom_ipcc *ipcc = irq_data_get_irq_chip_data(irqd); + irq_hw_number_t hwirq = irqd_to_hwirq(irqd); + + writel(hwirq, ipcc->base + IPCC_REG_RECV_SIGNAL_DISABLE); +} + +static void qcom_ipcc_unmask_irq(struct irq_data *irqd) +{ + struct qcom_ipcc *ipcc = irq_data_get_irq_chip_data(irqd); + irq_hw_number_t hwirq = irqd_to_hwirq(irqd); + + writel(hwirq, ipcc->base + IPCC_REG_RECV_SIGNAL_ENABLE); +} + +static struct irq_chip qcom_ipcc_irq_chip = { + .name = "ipcc", + .irq_mask = qcom_ipcc_mask_irq, + .irq_unmask = qcom_ipcc_unmask_irq, + .flags = IRQCHIP_SKIP_SET_WAKE, +}; + +static int qcom_ipcc_domain_map(struct irq_domain *d, unsigned int irq, + irq_hw_number_t hw) +{ + struct qcom_ipcc *ipcc = d->host_data; + + irq_set_chip_and_handler(irq, &qcom_ipcc_irq_chip, handle_level_irq); + irq_set_chip_data(irq, ipcc); + irq_set_noprobe(irq); + + return 0; +} + +static int qcom_ipcc_domain_xlate(struct irq_domain *d, + struct device_node *node, const u32 *intspec, + unsigned int intsize, + unsigned long *out_hwirq, + unsigned int *out_type) +{ + if (intsize != 3) + return -EINVAL; + + *out_hwirq = qcom_ipcc_get_hwirq(intspec[0], intspec[1]); + *out_type = intspec[2] & IRQ_TYPE_SENSE_MASK; + + return 0; +} + +static const struct irq_domain_ops qcom_ipcc_irq_ops = { + .map = qcom_ipcc_domain_map, + .xlate = qcom_ipcc_domain_xlate, +}; + +static int qcom_ipcc_mbox_send_data(struct mbox_chan *chan, void *data) +{ + struct qcom_ipcc *ipcc = to_qcom_ipcc(chan->mbox); + struct qcom_ipcc_chan_info *mchan = chan->con_priv; + u32 hwirq; + + hwirq = qcom_ipcc_get_hwirq(mchan->client_id, mchan->signal_id); + writel(hwirq, ipcc->base + IPCC_REG_SEND_ID); + + return 0; +} + +static struct mbox_chan *qcom_ipcc_mbox_xlate(struct mbox_controller *mbox, + const struct of_phandle_args *ph) +{ + struct qcom_ipcc *ipcc = to_qcom_ipcc(mbox); + struct qcom_ipcc_chan_info *mchan; + struct mbox_chan *chan; + unsigned int i; + + if (ph->args_count != 2) + return ERR_PTR(-EINVAL); + + for (i = 0; i < IPCC_MBOX_MAX_CHAN; i++) { + chan = &ipcc->chan[i]; + if (!chan->con_priv) { + mchan = &ipcc->mchan[i]; + mchan->client_id = ph->args[0]; + mchan->signal_id = ph->args[1]; + chan->con_priv = mchan; + break; + } + + chan = NULL; + } + + return chan ?: ERR_PTR(-EBUSY); +} + +static const struct mbox_chan_ops ipcc_mbox_chan_ops = { + .send_data = qcom_ipcc_mbox_send_data, +}; + +static int qcom_ipcc_setup_mbox(struct qcom_ipcc *ipcc) +{ + struct mbox_controller *mbox; + struct device *dev = ipcc->dev; + + mbox = &ipcc->mbox; + mbox->dev = dev; + mbox->num_chans = IPCC_MBOX_MAX_CHAN; + mbox->chans = ipcc->chan; + mbox->ops = &ipcc_mbox_chan_ops; + mbox->of_xlate = qcom_ipcc_mbox_xlate; + mbox->txdone_irq = false; + mbox->txdone_poll = false; + + return devm_mbox_controller_register(dev, mbox); +} + +static int qcom_ipcc_probe(struct platform_device *pdev) +{ + struct qcom_ipcc *ipcc; + int ret; + + ipcc = devm_kzalloc(&pdev->dev, sizeof(*ipcc), GFP_KERNEL); + if (!ipcc) + return -ENOMEM; + + ipcc->dev = &pdev->dev; + + ipcc->base = devm_platform_ioremap_resource(pdev, 0); + if (IS_ERR(ipcc->base)) + return PTR_ERR(ipcc->base); + + ipcc->irq = platform_get_irq(pdev, 0); + if (ipcc->irq < 0) + return ipcc->irq; + + ipcc->irq_domain = irq_domain_add_tree(pdev->dev.of_node, + &qcom_ipcc_irq_ops, ipcc); + if (!ipcc->irq_domain) + return -ENOMEM; + + ret = qcom_ipcc_setup_mbox(ipcc); + if (ret) + goto err_mbox; + + ret = devm_request_irq(&pdev->dev, ipcc->irq, qcom_ipcc_irq_fn, + IRQF_TRIGGER_HIGH, "ipcc", ipcc); + if (ret < 0) { + dev_err(&pdev->dev, "Failed to register the irq: %d\n", ret); + goto err_mbox; + } + + enable_irq_wake(ipcc->irq); + platform_set_drvdata(pdev, ipcc); + + return 0; + +err_mbox: + irq_domain_remove(ipcc->irq_domain); + + return ret; +} + +static int qcom_ipcc_remove(struct platform_device *pdev) +{ + struct qcom_ipcc *ipcc = platform_get_drvdata(pdev); + + disable_irq_wake(ipcc->irq); + irq_domain_remove(ipcc->irq_domain); + + return 0; +} + +static const struct of_device_id qcom_ipcc_of_match[] = { + { .compatible = "qcom,ipcc"}, + {} +}; +MODULE_DEVICE_TABLE(of, qcom_ipcc_of_match); + +static struct platform_driver qcom_ipcc_driver = { + .probe = qcom_ipcc_probe, + .remove = qcom_ipcc_remove, + .driver = { + .name = "qcom-ipcc", + .of_match_table = qcom_ipcc_of_match, + }, +}; + +static int __init qcom_ipcc_init(void) +{ + return platform_driver_register(&qcom_ipcc_driver); +} +arch_initcall(qcom_ipcc_init); + +MODULE_AUTHOR("Venkata Narendra Kumar Gutta "); +MODULE_AUTHOR("Manivannan Sadhasivam "); +MODULE_DESCRIPTION("Qualcomm Technologies, Inc. IPCC driver"); +MODULE_LICENSE("GPL v2"); From patchwork Fri May 8 18:27:03 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Manivannan Sadhasivam X-Patchwork-Id: 11537355 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 A2F7315AB for ; Fri, 8 May 2020 18:27:36 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 8A5162173E for ; Fri, 8 May 2020 18:27:36 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=linaro.org header.i=@linaro.org header.b="KL1/NkKR" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727844AbgEHS1g (ORCPT ); Fri, 8 May 2020 14:27:36 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:56970 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S1727825AbgEHS1f (ORCPT ); Fri, 8 May 2020 14:27:35 -0400 Received: from mail-pg1-x544.google.com (mail-pg1-x544.google.com [IPv6:2607:f8b0:4864:20::544]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 69C22C061A0C for ; Fri, 8 May 2020 11:27:35 -0700 (PDT) Received: by mail-pg1-x544.google.com with SMTP id n11so1228672pgl.9 for ; Fri, 08 May 2020 11:27:35 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=hN4aOQqQDUCJtoOHCvHdyqo0T+RL3xFpmONUoLpf4BA=; b=KL1/NkKRX1oUYO7Z1N00JVKw1P+8x2REeQYN7Q7fhRrD1t6Et+WJx2YsK4Hf/RC4jM 7cduWWHx/DE4Swjex9x6osHhBCcNe9ec5q2LlkSr1CYh7E6rEDEEConjcTuPOoel7pN4 BRJXAiM8DzL0QvF3qO5gNLuIKJ4J1g8/h+VuXoT4tVFZ0hqnLlO4i4g5HC3ikNibtTf1 YhKzedBK7IaqTcL+GFpnhi0hTRDCoZqA5fkQsHu6SH0Ae+swncOm9g3E8RG95OsLmu1E yx6RQGSkK/ZVi3zAnpfwgB6y/Rdx38cN+FxMCv3uAzoQIYyOtwiTp3sFpq+/9tOerkLJ qgQQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=hN4aOQqQDUCJtoOHCvHdyqo0T+RL3xFpmONUoLpf4BA=; b=YMqqvOKa8CnItXZXdxEDvfZuffswBigiYc8mkcc+GO6SI8x6nlkolE/ZwRIyTd3ctu D9il52Uq6ACnFhQydvkCTm+wYTt+OQ1UoXRFmDs/KBQ105ho99OhpeqPRNIqL+6YxEsv RuZ5R5oGPDm9cv8VHF6AcIaC2KllSqLVbhDI50oSkC2jWp+YOrMSQ8q+Q3WEyyAi4wGy RzWH6S+0pmNJpYLrEq472Y0e0iBR9yrYVDhtyG2W0HuyODymYJbJs7OTk8wSoz3lutvf QNn3INUd18X0Mw188Wo8PCn9xuCt4tUD48G8zIT8N9sGSnkGoXHN8wKhj6LPm/h81JmP s41Q== X-Gm-Message-State: AGi0Pua0wY/GGcNwtqaIGgaR4zz8Th4VsBnZTpOVlogedHybBbjA+0BJ cQAe0glUtQ4TD/aEy7BY9GVK X-Google-Smtp-Source: APiQypJVcjKVXAtc+RhgX8h8rDloj7wN3GTygiGNJPq9kGosRQivY72uQWPhjT9ky30hWj1dOyflFA== X-Received: by 2002:a63:ef4e:: with SMTP id c14mr3094540pgk.84.1588962454832; Fri, 08 May 2020 11:27:34 -0700 (PDT) Received: from localhost.localdomain ([2409:4072:9e:e39a:a052:f8c0:a37b:3255]) by smtp.gmail.com with ESMTPSA id y24sm2248379pfn.211.2020.05.08.11.27.30 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 08 May 2020 11:27:34 -0700 (PDT) From: Manivannan Sadhasivam To: jassisinghbrar@gmail.com, robh+dt@kernel.org Cc: bjorn.andersson@linaro.org, linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, Manivannan Sadhasivam Subject: [PATCH v2 3/3] MAINTAINERS: Add entry for Qualcomm IPCC driver Date: Fri, 8 May 2020 23:57:03 +0530 Message-Id: <20200508182703.29021-4-manivannan.sadhasivam@linaro.org> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200508182703.29021-1-manivannan.sadhasivam@linaro.org> References: <20200508182703.29021-1-manivannan.sadhasivam@linaro.org> Sender: linux-arm-msm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org Add MAINTAINERS entry for Qualcomm IPCC driver and its binding. Signed-off-by: Manivannan Sadhasivam Reviewed-by: Bjorn Andersson --- MAINTAINERS | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/MAINTAINERS b/MAINTAINERS index e64e5db31497..cc2fb991cc0d 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -14013,6 +14013,14 @@ L: linux-arm-msm@vger.kernel.org S: Maintained F: drivers/iommu/qcom_iommu.c +QUALCOMM IPCC MAILBOX DRIVER +M: Manivannan Sadhasivam +L: linux-arm-msm@vger.kernel.org +S: Supported +F: Documentation/devicetree/bindings/mailbox/qcom-ipcc.yaml +F: drivers/mailbox/qcom-ipcc.c +F: include/dt-bindings/mailbox/qcom-ipcc.h + QUALCOMM RMNET DRIVER M: Subash Abhinov Kasiviswanathan M: Sean Tranchetti