From patchwork Mon Apr 22 03:32:03 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mason Yang X-Patchwork-Id: 10910589 X-Patchwork-Delegate: geert@linux-m68k.org Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 74563112C for ; Mon, 22 Apr 2019 03:10:44 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 6662827B13 for ; Mon, 22 Apr 2019 03:10:44 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 599D8286DF; Mon, 22 Apr 2019 03:10:44 +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=-7.9 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI autolearn=ham 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 7B54E27B13 for ; Mon, 22 Apr 2019 03:10:43 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726210AbfDVDKn (ORCPT ); Sun, 21 Apr 2019 23:10:43 -0400 Received: from twhmllg4.macronix.com ([211.75.127.132]:54003 "EHLO TWHMLLG4.macronix.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726108AbfDVDKm (ORCPT ); Sun, 21 Apr 2019 23:10:42 -0400 Received: from localhost.localdomain ([172.17.195.96]) by TWHMLLG4.macronix.com with ESMTP id x3M3AUoP032883; Mon, 22 Apr 2019 11:10:31 +0800 (GMT-8) (envelope-from masonccyang@mxic.com.tw) From: Mason Yang To: broonie@kernel.org, marek.vasut@gmail.com, linux-kernel@vger.kernel.org, linux-spi@vger.kernel.org, bbrezillon@kernel.org, linux-renesas-soc@vger.kernel.org, Geert Uytterhoeven , lee.jones@linaro.org, sergei.shtylyov@cogentembedded.com, robh+dt@kernel.org, mark.rutland@arm.com, devicetree@vger.kernel.org Cc: juliensu@mxic.com.tw, Simon Horman , Mason Yang , zhengxunli@mxic.com.tw Subject: [PATCH v11 1/3] mfd: Add Renesas R-Car Gen3 RPC-IF MFD driver Date: Mon, 22 Apr 2019 11:32:03 +0800 Message-Id: <1555903925-15292-2-git-send-email-masonccyang@mxic.com.tw> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1555903925-15292-1-git-send-email-masonccyang@mxic.com.tw> References: <1555903925-15292-1-git-send-email-masonccyang@mxic.com.tw> X-MAIL: TWHMLLG4.macronix.com x3M3AUoP032883 Sender: linux-renesas-soc-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-renesas-soc@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Add a driver for Renesas R-Car Gen3 RPC-IF MFD. Signed-off-by: Mason Yang --- drivers/mfd/Kconfig | 9 +++ drivers/mfd/Makefile | 1 + drivers/mfd/renesas-rpc.c | 125 +++++++++++++++++++++++++++++++++++ include/linux/mfd/renesas-rpc.h | 141 ++++++++++++++++++++++++++++++++++++++++ 4 files changed, 276 insertions(+) create mode 100644 drivers/mfd/renesas-rpc.c create mode 100644 include/linux/mfd/renesas-rpc.h diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig index 26ad646..efdb1b9 100644 --- a/drivers/mfd/Kconfig +++ b/drivers/mfd/Kconfig @@ -978,6 +978,15 @@ config MFD_RDC321X southbridge which provides access to GPIOs and Watchdog using the southbridge PCI device configuration space. +config MFD_RENESAS_RPC + tristate "Renesas R-Car Gen3 RPC-IF MFD driver" + select MFD_CORE + depends on ARCH_RENESAS + help + This supports Renesas R-Car Gen3 RPC-IF multifunction device + which provides either SPI host or HyperFlash. + You have to select individual components under the corresponding menu. + config MFD_RT5033 tristate "Richtek RT5033 Power Management IC" depends on I2C diff --git a/drivers/mfd/Makefile b/drivers/mfd/Makefile index b4569ed7..4a49699 100644 --- a/drivers/mfd/Makefile +++ b/drivers/mfd/Makefile @@ -183,6 +183,7 @@ obj-$(CONFIG_MFD_INTEL_QUARK_I2C_GPIO) += intel_quark_i2c_gpio.o obj-$(CONFIG_LPC_SCH) += lpc_sch.o obj-$(CONFIG_LPC_ICH) += lpc_ich.o obj-$(CONFIG_MFD_RDC321X) += rdc321x-southbridge.o +obj-$(CONFIG_MFD_RENESAS_RPC) += renesas-rpc.o obj-$(CONFIG_MFD_JANZ_CMODIO) += janz-cmodio.o obj-$(CONFIG_MFD_JZ4740_ADC) += jz4740-adc.o obj-$(CONFIG_MFD_TPS6586X) += tps6586x.o diff --git a/drivers/mfd/renesas-rpc.c b/drivers/mfd/renesas-rpc.c new file mode 100644 index 0000000..c80c8d1 --- /dev/null +++ b/drivers/mfd/renesas-rpc.c @@ -0,0 +1,125 @@ +// SPDX-License-Identifier: GPL-2.0 +// +// Copyright (C) 2018 ~ 2019 Renesas Solutions Corp. +// Copyright (C) 2019 Macronix International Co., Ltd. +// +// R-Car Gen3 RPC-IF MFD driver +// +// Author: +// Mason Yang +// + +#include +#include +#include +#include +#include +#include +#include +#include + +static const struct mfd_cell rpc_hf_ctlr = { + .name = "rpc-hf", +}; + +static const struct mfd_cell rpc_spi_ctlr = { + .name = "rpc-spi", +}; + +static const struct regmap_range rpc_mfd_volatile_ranges[] = { + regmap_reg_range(RPC_SMRDR0, RPC_SMRDR1), + regmap_reg_range(RPC_SMWDR0, RPC_SMWDR1), + regmap_reg_range(RPC_CMNSR, RPC_CMNSR), +}; + +static const struct regmap_access_table rpc_mfd_volatile_table = { + .yes_ranges = rpc_mfd_volatile_ranges, + .n_yes_ranges = ARRAY_SIZE(rpc_mfd_volatile_ranges), +}; + +static const struct regmap_config rpc_mfd_regmap_config = { + .reg_bits = 32, + .val_bits = 32, + .reg_stride = 4, + .fast_io = true, + .max_register = RPC_PHYOFFSET2, + .volatile_table = &rpc_mfd_volatile_table, +}; + +static int rpc_mfd_probe(struct platform_device *pdev) +{ + struct device_node *flash; + const struct mfd_cell *cell; + struct resource *res; + struct rpc_mfd *rpc; + void __iomem *base; + + flash = of_get_next_child(pdev->dev.of_node, NULL); + if (!flash) { + dev_warn(&pdev->dev, "no flash node found\n"); + return -ENODEV; + } + + if (of_device_is_compatible(flash, "jedec,spi-nor")) { + cell = &rpc_spi_ctlr; + } else if (of_device_is_compatible(flash, "cfi-flash")) { + cell = &rpc_hf_ctlr; + } else { + dev_warn(&pdev->dev, "unknown flash type\n"); + return -ENODEV; + } + + rpc = devm_kzalloc(&pdev->dev, sizeof(*rpc), GFP_KERNEL); + if (!rpc) + return -ENOMEM; + + rpc->clk_rpc = devm_clk_get(&pdev->dev, "rpc"); + if (IS_ERR(rpc->clk_rpc)) + return PTR_ERR(rpc->clk_rpc); + + res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "regs"); + base = devm_ioremap_resource(&pdev->dev, res); + if (IS_ERR(base)) + return PTR_ERR(base); + + rpc->regmap = devm_regmap_init_mmio(&pdev->dev, base, + &rpc_mfd_regmap_config); + if (IS_ERR(rpc->regmap)) { + dev_err(&pdev->dev, + "failed to init regmap for rpc-mfd, error %ld\n", + PTR_ERR(rpc->regmap)); + return PTR_ERR(rpc->regmap); + } + + res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "dirmap"); + rpc->dirmap = devm_ioremap_resource(&pdev->dev, res); + if (IS_ERR(rpc->dirmap)) + rpc->dirmap = NULL; + + rpc->rstc = devm_reset_control_get_exclusive(&pdev->dev, NULL); + if (IS_ERR(rpc->rstc)) + return PTR_ERR(rpc->rstc); + + platform_set_drvdata(pdev, rpc); + + return devm_mfd_add_devices(&pdev->dev, -1, cell, 1, NULL, 0, NULL); +} + +static const struct of_device_id rpc_mfd_of_match[] = { + { .compatible = "renesas,rcar-gen3-rpc", }, + {}, +}; +MODULE_DEVICE_TABLE(of, rpc_mfd_of_match); + +static struct platform_driver rpc_mfd_driver = { + .probe = rpc_mfd_probe, + .driver = { + .name = "rpc-mfd", + .of_match_table = rpc_mfd_of_match, + }, +}; +module_platform_driver(rpc_mfd_driver); + +MODULE_AUTHOR("Mason Yang "); +MODULE_DESCRIPTION("Renesas R-Car Gen3 RPC MFD driver"); +MODULE_LICENSE("GPL v2"); diff --git a/include/linux/mfd/renesas-rpc.h b/include/linux/mfd/renesas-rpc.h new file mode 100644 index 0000000..bc53d02 --- /dev/null +++ b/include/linux/mfd/renesas-rpc.h @@ -0,0 +1,141 @@ +// SPDX-License-Identifier: GPL-2.0 +// +// Copyright (C) 2018 ~ 2019 Renesas Solutions Corp. +// Copyright (C) 2019 Macronix International Co., Ltd. +// +// R-Car Gen3 RPC-IF MFD driver +// +// Author: +// Mason Yang +// + +#ifndef __MFD_RENESAS_RPC_H +#define __MFD_RENESAS_RPC_H + +#define RPC_CMNCR 0x0000 // R/W +#define RPC_CMNCR_MD BIT(31) +#define RPC_CMNCR_SFDE BIT(24) // undocumented bit but must be set +#define RPC_CMNCR_MOIIO3(val) (((val) & 0x3) << 22) +#define RPC_CMNCR_MOIIO2(val) (((val) & 0x3) << 20) +#define RPC_CMNCR_MOIIO1(val) (((val) & 0x3) << 18) +#define RPC_CMNCR_MOIIO0(val) (((val) & 0x3) << 16) +#define RPC_CMNCR_MOIIO_HIZ (RPC_CMNCR_MOIIO0(3) | RPC_CMNCR_MOIIO1(3) | \ + RPC_CMNCR_MOIIO2(3) | RPC_CMNCR_MOIIO3(3)) +#define RPC_CMNCR_IO3FV(val) (((val) & 0x3) << 14) // undocumented +#define RPC_CMNCR_IO2FV(val) (((val) & 0x3) << 12) // undocumented +#define RPC_CMNCR_IO0FV(val) (((val) & 0x3) << 8) +#define RPC_CMNCR_IOFV_HIZ (RPC_CMNCR_IO0FV(3) | RPC_CMNCR_IO2FV(3) | \ + RPC_CMNCR_IO3FV(3)) +#define RPC_CMNCR_BSZ(val) (((val) & 0x3) << 0) + +#define RPC_SSLDR 0x0004 // R/W +#define RPC_SSLDR_SPNDL(d) (((d) & 0x7) << 16) +#define RPC_SSLDR_SLNDL(d) (((d) & 0x7) << 8) +#define RPC_SSLDR_SCKDL(d) (((d) & 0x7) << 0) + +#define RPC_DRCR 0x000C // R/W +#define RPC_DRCR_SSLN BIT(24) +#define RPC_DRCR_RBURST(v) ((((v) - 1) & 0x1F) << 16) +#define RPC_DRCR_RCF BIT(9) +#define RPC_DRCR_RBE BIT(8) +#define RPC_DRCR_SSLE BIT(0) + +#define RPC_DRCMR 0x0010 // R/W +#define RPC_DRCMR_CMD(c) (((c) & 0xFF) << 16) +#define RPC_DRCMR_OCMD(c) (((c) & 0xFF) << 0) + +#define RPC_DREAR 0x0014 // R/W +#define RPC_DREAR_EAV(c) (((c) & 0xf) << 16) +#define RPC_DREAR_EAC(c) (((c) & 0x7) << 0) + +#define RPC_DROPR 0x0018 // R/W + +#define RPC_DRENR 0x001C // R/W +#define RPC_DRENR_CDB(o) (u32)((((o) & 0x3) << 30)) +#define RPC_DRENR_OCDB(o) (((o) & 0x3) << 28) +#define RPC_DRENR_ADB(o) (((o) & 0x3) << 24) +#define RPC_DRENR_OPDB(o) (((o) & 0x3) << 20) +#define RPC_DRENR_DRDB(o) (((o) & 0x3) << 16) +#define RPC_DRENR_DME BIT(15) +#define RPC_DRENR_CDE BIT(14) +#define RPC_DRENR_OCDE BIT(12) +#define RPC_DRENR_ADE(v) (((v) & 0xF) << 8) +#define RPC_DRENR_OPDE(v) (((v) & 0xF) << 4) + +#define RPC_SMCR 0x0020 // R/W +#define RPC_SMCR_SSLKP BIT(8) +#define RPC_SMCR_SPIRE BIT(2) +#define RPC_SMCR_SPIWE BIT(1) +#define RPC_SMCR_SPIE BIT(0) + +#define RPC_SMCMR 0x0024 // R/W +#define RPC_SMCMR_CMD(c) (((c) & 0xFF) << 16) +#define RPC_SMCMR_OCMD(c) (((c) & 0xFF) << 0) + +#define RPC_SMADR 0x0028 // R/W +#define RPC_SMOPR 0x002C // R/W +#define RPC_SMOPR_OPD3(o) (((o) & 0xFF) << 24) +#define RPC_SMOPR_OPD2(o) (((o) & 0xFF) << 16) +#define RPC_SMOPR_OPD1(o) (((o) & 0xFF) << 8) +#define RPC_SMOPR_OPD0(o) (((o) & 0xFF) << 0) + +#define RPC_SMENR 0x0030 // R/W +#define RPC_SMENR_CDB(o) (((o) & 0x3) << 30) +#define RPC_SMENR_OCDB(o) (((o) & 0x3) << 28) +#define RPC_SMENR_ADB(o) (((o) & 0x3) << 24) +#define RPC_SMENR_OPDB(o) (((o) & 0x3) << 20) +#define RPC_SMENR_SPIDB(o) (((o) & 0x3) << 16) +#define RPC_SMENR_DME BIT(15) +#define RPC_SMENR_CDE BIT(14) +#define RPC_SMENR_OCDE BIT(12) +#define RPC_SMENR_ADE(v) (((v) & 0xF) << 8) +#define RPC_SMENR_OPDE(v) (((v) & 0xF) << 4) +#define RPC_SMENR_SPIDE(v) (((v) & 0xF) << 0) + +#define RPC_SMRDR0 0x0038 // R +#define RPC_SMRDR1 0x003C // R +#define RPC_SMWDR0 0x0040 // W +#define RPC_SMWDR1 0x0044 // W + +#define RPC_CMNSR 0x0048 // R +#define RPC_CMNSR_SSLF BIT(1) +#define RPC_CMNSR_TEND BIT(0) + +#define RPC_DRDMCR 0x0058 // R/W +#define RPC_DRDRENR 0x005C // R/W + +#define RPC_SMDMCR 0x0060 // R/W +#define RPC_SMDMCR_DMCYC(v) ((((v) - 1) & 0x1F) << 0) + +#define RPC_SMDRENR 0x0064 // R/W +#define RPC_SMDRENR_HYPE (0x7 << 12) +#define RPC_SMDRENR_ADDRE BIT(8) +#define RPC_SMDRENR_OPDRE BIT(4) +#define RPC_SMDRENR_SPIDRE BIT(0) + +#define RPC_PHYCNT 0x007C // R/W +#define RPC_PHYCNT_CAL BIT(31) +#define PRC_PHYCNT_OCTA_AA BIT(22) +#define PRC_PHYCNT_OCTA_SA BIT(23) +#define PRC_PHYCNT_EXDS BIT(21) +#define RPC_PHYCNT_OCT BIT(20) +#define RPC_PHYCNT_STRTIM(v) (((v) & 0x7) << 15) +#define RPC_PHYCNT_WBUF2 BIT(4) +#define RPC_PHYCNT_WBUF BIT(2) +#define RPC_PHYCNT_PHYMEM(v) (((v) & 0x3) << 0) + +#define RPC_PHYOFFSET1 0x0080 // R/W +#define RPC_PHYOFFSET1_DDRTMG(v) (((v) & 0x3) << 28) +#define RPC_PHYOFFSET2 0x0084 // R/W +#define RPC_PHYOFFSET2_OCTTMG(v) (((v) & 0x7) << 8) + +#define RPC_DIRMAP_SIZE 0x4000000 + +struct rpc_mfd { + struct clk *clk_rpc; + void __iomem *dirmap; + struct regmap *regmap; + struct reset_control *rstc; +}; + +#endif // __MFD_RENESAS_RPC_H