From: Shunquan Lin <linshunquan1@xxxxxxxxxxxxx> This patch adds driver support for HiSilicon Flash Memory Controller(FMC). HiSilicon FMC is a multi-functions device which supports SPI Nor flash controller, SPI nand Flash controller and parallel nand flash controller. Signed-off-by: Shunquan Lin <linshunquan1@xxxxxxxxxxxxx> --- .../devicetree/bindings/mfd/hisilicon,hisi-fmc.txt | 62 ++++++++++++ drivers/mfd/Kconfig | 10 ++ drivers/mfd/Makefile | 1 + drivers/mfd/hisi_fmc.c | 109 +++++++++++++++++++++ include/linux/mfd/hisi_fmc.h | 92 +++++++++++++++++ 5 files changed, 274 insertions(+) create mode 100644 Documentation/devicetree/bindings/mfd/hisilicon,hisi-fmc.txt create mode 100644 drivers/mfd/hisi_fmc.c create mode 100644 include/linux/mfd/hisi_fmc.h diff --git a/Documentation/devicetree/bindings/mfd/hisilicon,hisi-fmc.txt b/Documentation/devicetree/bindings/mfd/hisilicon,hisi-fmc.txt new file mode 100644 index 0000000..cf41664 --- /dev/null +++ b/Documentation/devicetree/bindings/mfd/hisilicon,hisi-fmc.txt @@ -0,0 +1,62 @@ +HiSilicon Flash Memory Controller + +The HiSilicon Flash Memory Controller(FMC) is a feature-rich controller +that supports SPI Nor, SPI Nand and Parallel Nand devices. This document +describes the binding for HiSilicon FMC device and its sub-notes. + +Required properties: +- compatible : Should be "hisilicon,hisi-fmc". +- reg : Offset and length of the register set for the controller device. +- reg-names : Must include the following two entries: "control", "memory". +- address-cells : Should be 1. +- size-cells : Should be 0. +- clocks : A phandle to the HiSilicon FMC controller clock. + +Optional sub-nodes: + - spi-nor: + Required properties: + - compatible : "hisilicon,fmc-spi-nor" + see "Documentation/devicetree/bindings/mtd/hisilicon,fmc-spi-nor.txt + + - spi-nand: + Required properties: + - compatible : "hisilicon,fmc-spi-nand" + - reg : The chipselect for spi-nand devices + - address-cells : Should be 1. + - size-cells : Should be 0. + + - nand: + Required properties: + - compatible : "hisilicon,fmc-nand" + - reg : The chipselect for nand devices + - address-cells : Should be 1. + - size-cells : Should be 0. + +Example: +fmc: flash-memory-controller@10000000 { + compatible = "hisilicon,hisi-fmc"; + reg = <0x10000000 0x1000>, <0x14000000 0x1000000>; + reg-names = "control", "memory"; + clocks = <&crg FMC_CLK>; + + hisfc:spi-nor { + compatible = "hisilicon,fmc-spi-nor"; + #address-cells = <1>; + #size-cells = <0>; + hi_sfc@0 { + compatible = "jedec,spi-nor"; + reg = <0>; + }; + /* + * Here you can add the spi nor flash devices. + * They share the same spi nor controller, but + * have different chipselect. + */ + }; + + /* + * Here you can add spi nand and nand sub-nodes. It depends + * on the board-grade design. + */ + +}; diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig index 2d1fb64..57473dc 100644 --- a/drivers/mfd/Kconfig +++ b/drivers/mfd/Kconfig @@ -340,6 +340,16 @@ config MFD_HI655X_PMIC help Select this option to enable Hisilicon hi655x series pmic driver. +config MFD_HISI_FMC + tristate "HiSilicon Flash Memory Controller" + depends on OF + select MFD_CORE + select REGMAP_MMIO + default y if (SPI_HISI_SFC) + help + Select this option to enable the HiSilicon Flash Memory + Controller(FMC) driver. + config HTC_EGPIO bool "HTC EGPIO support" depends on GPIOLIB && ARM diff --git a/drivers/mfd/Makefile b/drivers/mfd/Makefile index 2ba3ba3..a2476fb 100644 --- a/drivers/mfd/Makefile +++ b/drivers/mfd/Makefile @@ -176,6 +176,7 @@ obj-$(CONFIG_MFD_TPS65090) += tps65090.o obj-$(CONFIG_MFD_AAT2870_CORE) += aat2870-core.o obj-$(CONFIG_MFD_ATMEL_FLEXCOM) += atmel-flexcom.o obj-$(CONFIG_MFD_ATMEL_HLCDC) += atmel-hlcdc.o +obj-$(CONFIG_MFD_HISI_FMC) += hisi_fmc.o obj-$(CONFIG_MFD_INTEL_LPSS) += intel-lpss.o obj-$(CONFIG_MFD_INTEL_LPSS_PCI) += intel-lpss-pci.o obj-$(CONFIG_MFD_INTEL_LPSS_ACPI) += intel-lpss-acpi.o diff --git a/drivers/mfd/hisi_fmc.c b/drivers/mfd/hisi_fmc.c new file mode 100644 index 0000000..97ae3be --- /dev/null +++ b/drivers/mfd/hisi_fmc.c @@ -0,0 +1,109 @@ +/* HiSilicon Flash Memory Controller Driver + * + * Copyright (c) 2016 HiSilicon Technologies Co., Ltd. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see <http://www.gnu.org/licenses/>. + */ + +#include <linux/clk.h> +#include <linux/device.h> +#include <linux/err.h> +#include <linux/mfd/core.h> +#include <linux/mfd/hisi_fmc.h> +#include <linux/module.h> +#include <linux/of.h> +#include <linux/platform_device.h> + +/* ------------------------------------------------------------------------ */ +static const struct mfd_cell hisi_fmc_devs[] = { + { + .name = "hisi_spi_nor", + .of_compatible = "hisilicon,fmc-spi-nor", + }, + { + .name = "hisi_spi_nand", + .of_compatible = "hisilicon,fmc-spi-nand", + }, + { + .name = "hisi_nand", + .of_compatible = "hisilicon,fmc-nand", + }, +}; + +static int hisi_fmc_probe(struct platform_device *pdev) +{ + struct hisi_fmc *fmc; + struct resource *res; + int ret; + + fmc = devm_kzalloc(&pdev->dev, sizeof(*fmc), GFP_KERNEL); + if (!fmc) + return -ENOMEM; + + res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "control"); + fmc->regbase = devm_ioremap_resource(&pdev->dev, res); + if (IS_ERR(fmc->regbase)) + return PTR_ERR(fmc->regbase); + + res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "memory"); + fmc->iobase = devm_ioremap_resource(&pdev->dev, res); + if (IS_ERR(fmc->iobase)) + return PTR_ERR(fmc->iobase); + + fmc->clk = devm_clk_get(&pdev->dev, NULL); + if (IS_ERR(fmc->clk)) + return PTR_ERR(fmc->clk); + + mutex_init(&fmc->lock); + + platform_set_drvdata(pdev, fmc); + + ret = mfd_add_devices(&pdev->dev, 0, hisi_fmc_devs, + ARRAY_SIZE(hisi_fmc_devs), NULL, 0, NULL); + if (ret) { + dev_err(&pdev->dev, "add mfd devices failed: %d\n", ret); + return ret; + } + + return 0; +} + +static int hisi_fmc_remove(struct platform_device *pdev) +{ + struct hisi_fmc *fmc = platform_get_drvdata(pdev); + + mfd_remove_devices(&pdev->dev); + mutex_destroy(&fmc->lock); + + return 0; +} + +static const struct of_device_id hisi_fmc_of_match_tbl[] = { + { .compatible = "hisilicon,hisi-fmc"}, + { } +}; +MODULE_DEVICE_TABLE(of, hisi_fmc_of_match_tbl); + +static struct platform_driver hisi_fmc_driver = { + .driver = { + .name = "hifmc", + .of_match_table = hisi_fmc_of_match_tbl, + }, + .probe = hisi_fmc_probe, + .remove = hisi_fmc_remove, +}; +module_platform_driver(hisi_fmc_driver); + +MODULE_LICENSE("GPL v2"); +MODULE_DESCRIPTION("HiSilicon Flash Memory Controller Driver"); diff --git a/include/linux/mfd/hisi_fmc.h b/include/linux/mfd/hisi_fmc.h new file mode 100644 index 0000000..e569700 --- /dev/null +++ b/include/linux/mfd/hisi_fmc.h @@ -0,0 +1,92 @@ +/* + * Header file for HiSilicon Flash Memory Controller Driver + * + * Copyright (c) 2016 HiSilicon Technologies Co., Ltd. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#ifndef __HISI_FMC_H +#define __HISI_FMC_H + +#include <linux/bitops.h> +#include <linux/clk.h> +#include <linux/compiler.h> +#include <linux/mutex.h> + +/* Hardware register offsets and field definitions */ +#define FMC_CFG 0x00 +#define FMC_CFG_OP_MODE_MASK BIT_MASK(0) +#define FMC_CFG_OP_MODE_BOOT 0 +#define FMC_CFG_OP_MODE_NORMAL 1 +#define FMC_CFG_FLASH_SEL(type) (((type) & 0x3) << 1) +#define FMC_CFG_FLASH_SEL_MASK 0x6 +#define FMC_ECC_TYPE(type) (((type) & 0x7) << 5) +#define FMC_ECC_TYPE_MASK GENMASK(7, 5) +#define SPI_NOR_ADDR_MODE_MASK BIT_MASK(10) +#define SPI_NOR_ADDR_MODE_3BYTES (0x0 << 10) +#define SPI_NOR_ADDR_MODE_4BYTES (0x1 << 10) +#define FMC_GLOBAL_CFG 0x04 +#define FMC_GLOBAL_CFG_WP_ENABLE BIT(6) +#define FMC_SPI_TIMING_CFG 0x08 +#define TIMING_CFG_TCSH(nr) (((nr) & 0xf) << 8) +#define TIMING_CFG_TCSS(nr) (((nr) & 0xf) << 4) +#define TIMING_CFG_TSHSL(nr) ((nr) & 0xf) +#define CS_HOLD_TIME 0x6 +#define CS_SETUP_TIME 0x6 +#define CS_DESELECT_TIME 0xf +#define FMC_INT 0x18 +#define FMC_INT_OP_DONE BIT(0) +#define FMC_INT_CLR 0x20 +#define FMC_CMD 0x24 +#define FMC_CMD_CMD1(cmd) ((cmd) & 0xff) +#define FMC_ADDRL 0x2c +#define FMC_OP_CFG 0x30 +#define OP_CFG_FM_CS(cs) ((cs) << 11) +#define OP_CFG_MEM_IF_TYPE(type) (((type) & 0x7) << 7) +#define OP_CFG_ADDR_NUM(addr) (((addr) & 0x7) << 4) +#define OP_CFG_DUMMY_NUM(dummy) ((dummy) & 0xf) +#define FMC_DATA_NUM 0x38 +#define FMC_DATA_NUM_CNT(cnt) ((cnt) & GENMASK(13, 0)) +#define FMC_OP 0x3c +#define FMC_OP_DUMMY_EN BIT(8) +#define FMC_OP_CMD1_EN BIT(7) +#define FMC_OP_ADDR_EN BIT(6) +#define FMC_OP_WRITE_DATA_EN BIT(5) +#define FMC_OP_READ_DATA_EN BIT(2) +#define FMC_OP_READ_STATUS_EN BIT(1) +#define FMC_OP_REG_OP_START BIT(0) +#define FMC_DMA_LEN 0x40 +#define FMC_DMA_LEN_SET(len) ((len) & GENMASK(27, 0)) +#define FMC_DMA_SADDR_D0 0x4c +#define HIFMC_DMA_MAX_LEN (4096) +#define HIFMC_DMA_MASK (HIFMC_DMA_MAX_LEN - 1) +#define FMC_OP_DMA 0x68 +#define OP_CTRL_RD_OPCODE(code) (((code) & 0xff) << 16) +#define OP_CTRL_WR_OPCODE(code) (((code) & 0xff) << 8) +#define OP_CTRL_RW_OP(op) ((op) << 1) +#define OP_CTRL_DMA_OP_READY BIT(0) +#define FMC_OP_READ 0x0 +#define FMC_OP_WRITE 0x1 +#define FMC_WAIT_TIMEOUT 1000000 + +#define HIFMC_MAX_CHIP_NUM 2 + +enum hifmc_iftype { + IF_TYPE_STD, + IF_TYPE_DUAL, + IF_TYPE_DIO, + IF_TYPE_QUAD, + IF_TYPE_QIO, +}; + +struct hisi_fmc { + void __iomem *regbase; + void __iomem *iobase; + struct clk *clk; + struct mutex lock; +}; + +#endif -- 2.3.7 -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html