From patchwork Wed Oct 19 02:24:46 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: chengwei X-Patchwork-Id: 617365 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 85C2BC433FE for ; Wed, 19 Oct 2022 02:26:25 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229822AbiJSC0Y (ORCPT ); Tue, 18 Oct 2022 22:26:24 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:41998 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229826AbiJSC0U (ORCPT ); Tue, 18 Oct 2022 22:26:20 -0400 Received: from mail-pl1-x632.google.com (mail-pl1-x632.google.com [IPv6:2607:f8b0:4864:20::632]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 89C22659F3; Tue, 18 Oct 2022 19:26:18 -0700 (PDT) Received: by mail-pl1-x632.google.com with SMTP id d24so15611174pls.4; Tue, 18 Oct 2022 19:26:18 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=references:in-reply-to:message-id:date:subject:cc:to:from:from:to :cc:subject:date:message-id:reply-to; bh=A3oFSwgk5gGMPkLAv8TtmBTiKw1NdXzkakQ4IAHH/yg=; b=n0WwOloAM8OLnGtcBimVikYcmaWPdpuWxEEmk3pOlosqx0/68aP2bUkgCBii9qz/Oq gVQM8anAF0a4azcH4bYmYPoI0QrXwlqOAiQEuCotFNsZ6BdTeYIcklNKAbu/2hZWQ3SI zyFY2zIUtIoWfV7L1dXiCZNg2zP9uus7T1X2Ohg31/gKoHz/50Vcux+vQnk2HZizu1Os otdG3BPvnXn9lLeXl78kOjNoMhOQY7zOESoe8gzBbs76BCtazs9HRHvBwiKeDUoZX4Wd skoGIbJ8JwiImosnF/oQ7hiP/cxkayF2voMfislXpFfsFZiMUewmiMaVt+rfFixjMQhW n4eQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=references:in-reply-to:message-id:date:subject:cc:to:from :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=A3oFSwgk5gGMPkLAv8TtmBTiKw1NdXzkakQ4IAHH/yg=; b=RltT4bU2ZtX51wVgU3KPDtlT/4IpzyyLexD5bfwgCSG9MrGG0x19Vd+/Lo06M/eWNA CLiJWeW3Ih0aCskXg35/5n0TOA8rDrzBYq//JGmRUY04GkrFMkEnsCWUdFDQJTj4Pk3e aYi7U/o4f0dJg53dVNgdfELRccctJ/1lFCMWC8cuytQrJWuDBEkm484Kc87r7q1wA6HI y3K1rSuCWtfn6epTSeRGI96dW3pMzSYcR1FPnBsbmLzjM3y8KE2KgAFdSfs/cgVJCwcn rXbO31vzavvcxrD2aaqzprR+Uj3Ft9r+Xxia+Xy8rkB9jIH2XcdiJh2VSjUeljD50FrA yGfQ== X-Gm-Message-State: ACrzQf3qf/SzEYXcqebPCN18N0A8eSgz4Icb5f2H8QeOjq7b52KxTTYM qow07HeVjwIMB95wjINFJQ== X-Google-Smtp-Source: AMsMyM6Mw6GHN4lXeNsJSB3IadU19IYa8BnDQsHumw52x+AtLWl+UZvP/B4xWQZz0b6/5kuBgj7UMQ== X-Received: by 2002:a17:903:2286:b0:182:2f05:8abb with SMTP id b6-20020a170903228600b001822f058abbmr5902452plh.14.1666146377949; Tue, 18 Oct 2022 19:26:17 -0700 (PDT) Received: from localhost.localdomain ([106.104.115.142]) by smtp.gmail.com with ESMTPSA id x185-20020a6263c2000000b00562a526cd2esm9855880pfb.55.2022.10.18.19.26.14 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 18 Oct 2022 19:26:17 -0700 (PDT) From: chengwei X-Google-Original-From: chengwei To: lee@kernel.org, broonie@kernel.org, rafael@kernel.org, mika.westerberg@linux.intel.com, andriy.shevchenko@linux.intel.com, linus.walleij@linaro.org, brgl@bgdev.pl Cc: linux-kernel@vger.kernel.org, gregkh@linuxfoundation.org, lenb@kernel.org, linux-acpi@vger.kernel.org, linux-gpio@vger.kernel.org, GaryWang@aaeon.com.tw, musa.lin@yunjingtech.com, jack.chang@yunjingtech.com, chengwei , Javier Arteaga , Nicola Lunghi Subject: [PATCH 1/5] mfd: Add support for UP board CPLD/FPGA Date: Wed, 19 Oct 2022 10:24:46 +0800 Message-Id: <20221019022450.16851-2-larry.lai@yunjingtech.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20221019022450.16851-1-larry.lai@yunjingtech.com> References: <20221019022450.16851-1-larry.lai@yunjingtech.com> Precedence: bulk List-ID: X-Mailing-List: linux-gpio@vger.kernel.org The UP Squared board implements certain features (pin control, onboard LEDs or CEC) through an on-board CPLD/FPGA. This mfd driver implements the line protocol to read and write registers from the FPGA through regmap. The register address map is also included. The UP Boards provide a few I/O pin headers (for both GPIO and functions), including a 40-pin Raspberry Pi compatible header. This patch implements support for the FPGA-based pin controller that manages direction and enable state for those header pins. Partial support UP boards: * UP core + CREX * UP core + CRST02 Signed-off-by: Javier Arteaga [merge various fixes] Signed-off-by: Nicola Lunghi Signed-off-by: chengwei --- drivers/mfd/Kconfig | 12 + drivers/mfd/Makefile | 1 + drivers/mfd/upboard-fpga.c | 482 +++++++++++++++++++++++++++++++ include/linux/mfd/upboard-fpga.h | 49 ++++ 4 files changed, 544 insertions(+) create mode 100644 drivers/mfd/upboard-fpga.c create mode 100644 include/linux/mfd/upboard-fpga.h diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig index abb58ab1a1a4..c1d72a70e5f2 100644 --- a/drivers/mfd/Kconfig +++ b/drivers/mfd/Kconfig @@ -2104,6 +2104,18 @@ config MFD_QCOM_PM8008 under it in the device tree. Additional drivers must be enabled in order to use the functionality of the device. +config MFD_UPBOARD_FPGA + tristate "Support for the UP board FPGA" + select MFD_CORE + depends on X86 && ACPI + help + Select this option to enable the Intel AAEON UP and UP^2 on-board FPGA. + The UP board implements certain features (pin control, onboard LEDs or + CEC) through an on-board FPGA. + + To compile this driver as a module, choose M here: the module will be + called upboard-fpga. + menu "Multimedia Capabilities Port drivers" depends on ARCH_SA1100 diff --git a/drivers/mfd/Makefile b/drivers/mfd/Makefile index 858cacf659d6..d9d10e3664f7 100644 --- a/drivers/mfd/Makefile +++ b/drivers/mfd/Makefile @@ -250,6 +250,7 @@ obj-$(CONFIG_MFD_ALTERA_A10SR) += altera-a10sr.o obj-$(CONFIG_MFD_ALTERA_SYSMGR) += altera-sysmgr.o obj-$(CONFIG_MFD_STPMIC1) += stpmic1.o obj-$(CONFIG_MFD_SUN4I_GPADC) += sun4i-gpadc.o +obj-$(CONFIG_MFD_UPBOARD_FPGA) += upboard-fpga.o obj-$(CONFIG_MFD_STM32_LPTIMER) += stm32-lptimer.o obj-$(CONFIG_MFD_STM32_TIMERS) += stm32-timers.o diff --git a/drivers/mfd/upboard-fpga.c b/drivers/mfd/upboard-fpga.c new file mode 100644 index 000000000000..6f73c2fa6f4a --- /dev/null +++ b/drivers/mfd/upboard-fpga.c @@ -0,0 +1,482 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * UP Board main platform driver and FPGA configuration support + * + * Copyright (c) 2017, Emutex Ltd. All rights reserved. + * + * Author: Javier Arteaga + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +static int upboard_fpga_read(void *, unsigned int, unsigned int *); +static int upboard_fpga_write(void *, unsigned int, unsigned int); + +struct upboard_fpga_data { + const struct regmap_config *regmapconf; + const struct mfd_cell *cells; + size_t ncells; +}; + +#define UPBOARD_LED_CELL(led_data, n) \ + { \ + .name = "upboard-led", \ + .id = (n), \ + .platform_data = &led_data[(n)], \ + .pdata_size = sizeof(*(led_data)), \ + } + +/* UP board */ + +static const struct regmap_range upboard_up_readable_ranges[] = { + regmap_reg_range(UPFPGA_REG_PLATFORM_ID, UPFPGA_REG_FIRMWARE_ID), + regmap_reg_range(UPFPGA_REG_FUNC_EN0, UPFPGA_REG_FUNC_EN0), + regmap_reg_range(UPFPGA_REG_GPIO_DIR0, UPFPGA_REG_GPIO_DIR1), +}; + +static const struct regmap_range upboard_up_writable_ranges[] = { + regmap_reg_range(UPFPGA_REG_FUNC_EN0, UPFPGA_REG_FUNC_EN0), + regmap_reg_range(UPFPGA_REG_GPIO_DIR0, UPFPGA_REG_GPIO_DIR1), +}; + +static const struct regmap_access_table upboard_up_readable_table = { + .yes_ranges = upboard_up_readable_ranges, + .n_yes_ranges = ARRAY_SIZE(upboard_up_readable_ranges), +}; + +static const struct regmap_access_table upboard_up_writable_table = { + .yes_ranges = upboard_up_writable_ranges, + .n_yes_ranges = ARRAY_SIZE(upboard_up_writable_ranges), +}; + +static const struct regmap_config upboard_up_regmap_config = { + .reg_bits = UPFPGA_ADDRESS_SIZE, + .val_bits = UPFPGA_REGISTER_SIZE, + .max_register = UPFPGA_REG_MAX, + .reg_read = upboard_fpga_read, + .reg_write = upboard_fpga_write, + .fast_io = false, + .cache_type = REGCACHE_RBTREE, + .rd_table = &upboard_up_readable_table, + .wr_table = &upboard_up_writable_table, +}; + +static struct upboard_led_data upboard_up_led_data[] = { + { .bit = 0, .colour = "yellow" }, + { .bit = 1, .colour = "green" }, + { .bit = 2, .colour = "red" }, +}; + +static const struct mfd_cell upboard_up_mfd_cells[] = { + { .name = "upboard-pinctrl" }, + UPBOARD_LED_CELL(upboard_up_led_data, 0), + UPBOARD_LED_CELL(upboard_up_led_data, 1), + UPBOARD_LED_CELL(upboard_up_led_data, 2), +}; + +static const struct upboard_fpga_data upboard_up_fpga_data = { + .regmapconf = &upboard_up_regmap_config, + .cells = upboard_up_mfd_cells, + .ncells = ARRAY_SIZE(upboard_up_mfd_cells), +}; + +/* UP^2 board */ + +static const struct regmap_range upboard_up2_readable_ranges[] = { + regmap_reg_range(UPFPGA_REG_PLATFORM_ID, UPFPGA_REG_FIRMWARE_ID), + regmap_reg_range(UPFPGA_REG_FUNC_EN0, UPFPGA_REG_FUNC_EN1), + regmap_reg_range(UPFPGA_REG_GPIO_EN0, UPFPGA_REG_GPIO_EN2), + regmap_reg_range(UPFPGA_REG_GPIO_DIR0, UPFPGA_REG_GPIO_DIR2), +}; + +static const struct regmap_range upboard_up2_writable_ranges[] = { + regmap_reg_range(UPFPGA_REG_FUNC_EN0, UPFPGA_REG_FUNC_EN1), + regmap_reg_range(UPFPGA_REG_GPIO_EN0, UPFPGA_REG_GPIO_EN2), + regmap_reg_range(UPFPGA_REG_GPIO_DIR0, UPFPGA_REG_GPIO_DIR2), +}; + +static const struct regmap_access_table upboard_up2_readable_table = { + .yes_ranges = upboard_up2_readable_ranges, + .n_yes_ranges = ARRAY_SIZE(upboard_up2_readable_ranges), +}; + +static const struct regmap_access_table upboard_up2_writable_table = { + .yes_ranges = upboard_up2_writable_ranges, + .n_yes_ranges = ARRAY_SIZE(upboard_up2_writable_ranges), +}; + +static const struct regmap_config upboard_up2_regmap_config = { + .reg_bits = UPFPGA_ADDRESS_SIZE, + .val_bits = UPFPGA_REGISTER_SIZE, + .max_register = UPFPGA_REG_MAX, + .reg_read = upboard_fpga_read, + .reg_write = upboard_fpga_write, + .fast_io = false, + .cache_type = REGCACHE_RBTREE, + .rd_table = &upboard_up2_readable_table, + .wr_table = &upboard_up2_writable_table, +}; + +static struct upboard_led_data upboard_up2_led_data[] = { + { .bit = 0, .colour = "blue" }, + { .bit = 1, .colour = "yellow" }, + { .bit = 2, .colour = "green" }, + { .bit = 3, .colour = "red" }, +}; + +static const struct mfd_cell upboard_up2_mfd_cells[] = { + { .name = "upboard-pinctrl" }, + UPBOARD_LED_CELL(upboard_up2_led_data, 0), + UPBOARD_LED_CELL(upboard_up2_led_data, 1), + UPBOARD_LED_CELL(upboard_up2_led_data, 2), + UPBOARD_LED_CELL(upboard_up2_led_data, 3), +}; + +static const struct upboard_fpga_data upboard_up2_fpga_data = { + .regmapconf = &upboard_up2_regmap_config, + .cells = upboard_up2_mfd_cells, + .ncells = ARRAY_SIZE(upboard_up2_mfd_cells), +}; + +/* UP-CREX carrier board for UP Core */ + +/* same MAXV config as UP1 (proto2 release) */ +#define upboard_upcore_crex_fpga_data upboard_up_fpga_data + +/* UP-CRST02 carrier board for UP Core */ + +/* same MAX10 config as UP2, but same LED cells as UP1 */ +static const struct upboard_fpga_data upboard_upcore_crst02_fpga_data = { + .regmapconf = &upboard_up2_regmap_config, + .cells = upboard_up_mfd_cells, + .ncells = ARRAY_SIZE(upboard_up_mfd_cells), +}; + +static int upboard_fpga_read(void *context, unsigned int reg, unsigned int *val) +{ + struct upboard_fpga * const fpga = context; + int i; + + gpiod_set_value(fpga->clear_gpio, 0); + gpiod_set_value(fpga->clear_gpio, 1); + + reg |= UPFPGA_READ_FLAG; + + for (i = UPFPGA_ADDRESS_SIZE; i >= 0; i--) { + gpiod_set_value(fpga->strobe_gpio, 0); + gpiod_set_value(fpga->datain_gpio, (reg >> i) & 0x1); + gpiod_set_value(fpga->strobe_gpio, 1); + } + + gpiod_set_value(fpga->strobe_gpio, 0); + *val = 0; + + for (i = UPFPGA_REGISTER_SIZE - 1; i >= 0; i--) { + gpiod_set_value(fpga->strobe_gpio, 1); + gpiod_set_value(fpga->strobe_gpio, 0); + *val |= gpiod_get_value(fpga->dataout_gpio) << i; + } + + gpiod_set_value(fpga->strobe_gpio, 1); + + return 0; +}; + +static int upboard_fpga_write(void *context, unsigned int reg, unsigned int val) +{ + struct upboard_fpga * const fpga = context; + int i; + + gpiod_set_value(fpga->clear_gpio, 0); + gpiod_set_value(fpga->clear_gpio, 1); + + for (i = UPFPGA_ADDRESS_SIZE; i >= 0; i--) { + gpiod_set_value(fpga->strobe_gpio, 0); + gpiod_set_value(fpga->datain_gpio, (reg >> i) & 0x1); + gpiod_set_value(fpga->strobe_gpio, 1); + } + + gpiod_set_value(fpga->strobe_gpio, 0); + + for (i = UPFPGA_REGISTER_SIZE - 1; i >= 0; i--) { + gpiod_set_value(fpga->datain_gpio, (val >> i) & 0x1); + gpiod_set_value(fpga->strobe_gpio, 1); + gpiod_set_value(fpga->strobe_gpio, 0); + } + + gpiod_set_value(fpga->strobe_gpio, 1); + + return 0; +}; + +static int __init upboard_fpga_gpio_init(struct upboard_fpga *fpga) +{ + enum gpiod_flags flags; + + flags = fpga->uninitialised ? GPIOD_OUT_LOW : GPIOD_ASIS; + fpga->enable_gpio = devm_gpiod_get(fpga->dev, "enable", flags); + if (IS_ERR(fpga->enable_gpio)) + return PTR_ERR(fpga->enable_gpio); + + fpga->clear_gpio = devm_gpiod_get(fpga->dev, "clear", GPIOD_OUT_LOW); + if (IS_ERR(fpga->clear_gpio)) + return PTR_ERR(fpga->clear_gpio); + + fpga->strobe_gpio = devm_gpiod_get(fpga->dev, "strobe", GPIOD_OUT_LOW); + if (IS_ERR(fpga->strobe_gpio)) + return PTR_ERR(fpga->strobe_gpio); + + fpga->datain_gpio = devm_gpiod_get(fpga->dev, "datain", GPIOD_OUT_LOW); + if (IS_ERR(fpga->datain_gpio)) + return PTR_ERR(fpga->datain_gpio); + + fpga->dataout_gpio = devm_gpiod_get(fpga->dev, "dataout", GPIOD_IN); + if (IS_ERR(fpga->dataout_gpio)) + return PTR_ERR(fpga->dataout_gpio); + + /* The SoC pinctrl driver may not support reserving the GPIO line for + * FPGA reset without causing an undesired reset pulse. This will clear + * any settings on the FPGA, so only do it if we must. + */ + if (fpga->uninitialised) { + fpga->reset_gpio = devm_gpiod_get(fpga->dev, "reset", + GPIOD_OUT_LOW); + if (IS_ERR(fpga->reset_gpio)) + return PTR_ERR(fpga->reset_gpio); + + gpiod_set_value(fpga->reset_gpio, 1); + } + + gpiod_set_value(fpga->enable_gpio, 1); + fpga->uninitialised = false; + + return 0; +} + +static int __init upboard_fpga_detect_firmware(struct upboard_fpga *fpga) +{ + const unsigned int AAEON_MANUFACTURER_ID = 0x01; + const unsigned int SUPPORTED_FW_MAJOR = 0x0; + unsigned int platform_id, manufacturer_id; + unsigned int firmware_id, build, major, minor, patch; + int ret; + + ret = regmap_read(fpga->regmap, UPFPGA_REG_PLATFORM_ID, &platform_id); + if (ret) + return ret; + + manufacturer_id = platform_id & 0xff; + if (manufacturer_id != AAEON_MANUFACTURER_ID) { + dev_dbg(fpga->dev, + "driver not compatible with custom FPGA FW from manufacturer id 0x%02x. Exiting", + manufacturer_id); + return -ENODEV; + } + + ret = regmap_read(fpga->regmap, UPFPGA_REG_FIRMWARE_ID, &firmware_id); + if (ret) + return ret; + + build = (firmware_id >> 12) & 0xf; + major = (firmware_id >> 8) & 0xf; + minor = (firmware_id >> 4) & 0xf; + patch = firmware_id & 0xf; + if (major != SUPPORTED_FW_MAJOR) { + dev_dbg(fpga->dev, "unsupported FPGA FW v%u.%u.%u build 0x%02x", + major, minor, patch, build); + return -ENODEV; + } + + dev_info(fpga->dev, "compatible FPGA FW v%u.%u.%u build 0x%02x", + major, minor, patch, build); + return 0; +} + +static const struct acpi_device_id upboard_fpga_acpi_match[] = { + { "AANT0F00", (kernel_ulong_t)&upboard_up_fpga_data }, + { "AANT0F01", (kernel_ulong_t)&upboard_up2_fpga_data }, + { "AANT0F02", (kernel_ulong_t)&upboard_upcore_crex_fpga_data }, + { "AANT0F03", (kernel_ulong_t)&upboard_upcore_crst02_fpga_data }, + { "AANT0F04", (kernel_ulong_t)&upboard_up_fpga_data }, + { } +}; +MODULE_DEVICE_TABLE(acpi, upboard_fpga_acpi_match); + +#define UPFPGA_QUIRK_UNINITIALISED BIT(0) +#define UPFPGA_QUIRK_HRV1_IS_PROTO2 BIT(1) +#define UPFPGA_QUIRK_GPIO_LED BIT(2) + +static const struct dmi_system_id upboard_dmi_table[] __initconst = { + { + .matches = { /* UP */ + DMI_EXACT_MATCH(DMI_SYS_VENDOR, "AAEON"), + DMI_EXACT_MATCH(DMI_BOARD_NAME, "UP-CHT01"), + DMI_EXACT_MATCH(DMI_BOARD_VERSION, "V0.4"), + }, + .driver_data = (void *)UPFPGA_QUIRK_UNINITIALISED, + }, + { + .matches = { /* UP2 */ + DMI_EXACT_MATCH(DMI_SYS_VENDOR, "AAEON"), + DMI_EXACT_MATCH(DMI_BOARD_NAME, "UP-APL01"), + DMI_EXACT_MATCH(DMI_BOARD_VERSION, "V0.3"), + }, + .driver_data = (void *)(UPFPGA_QUIRK_UNINITIALISED | + UPFPGA_QUIRK_HRV1_IS_PROTO2), + }, + { + .matches = { /* UP2 Pro*/ + DMI_EXACT_MATCH(DMI_SYS_VENDOR, "AAEON"), + DMI_EXACT_MATCH(DMI_BOARD_NAME, "UPN-APL01"), + DMI_EXACT_MATCH(DMI_BOARD_VERSION, "V1.0"), + }, + .driver_data = (void *)UPFPGA_QUIRK_HRV1_IS_PROTO2, + }, + { + .matches = { /* UP2 */ + DMI_EXACT_MATCH(DMI_SYS_VENDOR, "AAEON"), + DMI_EXACT_MATCH(DMI_BOARD_NAME, "UP-APL01"), + DMI_EXACT_MATCH(DMI_BOARD_VERSION, "V0.4"), + }, + .driver_data = (void *)UPFPGA_QUIRK_HRV1_IS_PROTO2, + }, + { + .matches = { /* UP Xtreme */ + DMI_EXACT_MATCH(DMI_SYS_VENDOR, "AAEON"), + DMI_EXACT_MATCH(DMI_BOARD_NAME, "UP-WHL01"), + DMI_EXACT_MATCH(DMI_BOARD_VERSION, "V0.1"), + }, + }, + { + .matches = { /* UP APL03 */ + DMI_EXACT_MATCH(DMI_SYS_VENDOR, "AAEON"), + DMI_EXACT_MATCH(DMI_BOARD_NAME, "UP-APL03"), + DMI_EXACT_MATCH(DMI_BOARD_VERSION, "V1.0"), + }, + .driver_data = (void *)(UPFPGA_QUIRK_HRV1_IS_PROTO2 | + UPFPGA_QUIRK_GPIO_LED), + }, + { }, +}; + +#define UPFPGA_PROTOCOL_V2_HRV 2 + +static int __init upboard_fpga_probe(struct platform_device *pdev) +{ + struct upboard_fpga *fpga; + const struct acpi_device_id *id; + const struct upboard_fpga_data *fpga_data; + const struct dmi_system_id *system_id; + acpi_handle handle; + acpi_status status; + unsigned long long hrv; + unsigned long quirks = 0; + int ret; + + id = acpi_match_device(upboard_fpga_acpi_match, &pdev->dev); + if (!id) + return -ENODEV; + + handle = ACPI_HANDLE(&pdev->dev); + status = acpi_evaluate_integer(handle, "_HRV", NULL, &hrv); + if (ACPI_FAILURE(status)) { + dev_err(&pdev->dev, "failed to get PCTL revision"); + return -ENODEV; + } + + system_id = dmi_first_match(upboard_dmi_table); + if (system_id) + quirks = (unsigned long)system_id->driver_data; + + if (hrv == 1 && (quirks & UPFPGA_QUIRK_HRV1_IS_PROTO2)) + hrv = UPFPGA_PROTOCOL_V2_HRV; + + if (hrv != UPFPGA_PROTOCOL_V2_HRV) { + dev_dbg(&pdev->dev, "unsupported PCTL revision: %llu", hrv); + return -ENODEV; + } + + fpga_data = (const struct upboard_fpga_data *) id->driver_data; + + fpga = devm_kzalloc(&pdev->dev, sizeof(*fpga), GFP_KERNEL); + if (!fpga) + return -ENOMEM; + + if (quirks & UPFPGA_QUIRK_UNINITIALISED) { + dev_info(&pdev->dev, "FPGA not initialised by this BIOS"); + fpga->uninitialised = true; + } + + dev_set_drvdata(&pdev->dev, fpga); + fpga->dev = &pdev->dev; + fpga->regmap = devm_regmap_init(&pdev->dev, NULL, fpga, + fpga_data->regmapconf); + if (IS_ERR(fpga->regmap)) + return PTR_ERR(fpga->regmap); + + ret = upboard_fpga_gpio_init(fpga); + if (ret) { + dev_err(&pdev->dev, "failed to init FPGA comm GPIOs: %d", ret); + return ret; + } + + ret = upboard_fpga_detect_firmware(fpga); + if (ret) + return ret; + + if (quirks & UPFPGA_QUIRK_GPIO_LED) { +#define APL_GPIO_218 507 + static struct gpio_led upboard_gpio_leds[] = { + { + .name = "upboard:blue:", + .gpio = APL_GPIO_218, + .default_state = LEDS_GPIO_DEFSTATE_KEEP, + }, + }; + static struct gpio_led_platform_data upboard_gpio_led_platform_data = { + .num_leds = ARRAY_SIZE(upboard_gpio_leds), + .leds = upboard_gpio_leds, + }; + static const struct mfd_cell upboard_gpio_led_cells[] = { + { + .name = "leds-gpio", + .id = 0, + .platform_data = &upboard_gpio_led_platform_data, + .pdata_size = sizeof(upboard_gpio_led_platform_data), + }, + }; + + ret = devm_mfd_add_devices(&pdev->dev, 0, upboard_gpio_led_cells, + ARRAY_SIZE(upboard_gpio_led_cells), NULL, 0, NULL); + if (ret) { + dev_err(&pdev->dev, "Failed to add GPIO leds"); + return ret; + } + + } + + return devm_mfd_add_devices(&pdev->dev, 0, fpga_data->cells, + fpga_data->ncells, NULL, 0, NULL); +} + +static struct platform_driver upboard_fpga_driver = { + .driver = { + .name = "upboard-fpga", + .acpi_match_table = upboard_fpga_acpi_match, + }, +}; + +module_platform_driver_probe(upboard_fpga_driver, upboard_fpga_probe); + +MODULE_AUTHOR("Javier Arteaga "); +MODULE_DESCRIPTION("UP Board FPGA driver"); +MODULE_LICENSE("GPL v2"); diff --git a/include/linux/mfd/upboard-fpga.h b/include/linux/mfd/upboard-fpga.h new file mode 100644 index 000000000000..e0940120514d --- /dev/null +++ b/include/linux/mfd/upboard-fpga.h @@ -0,0 +1,49 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * UP Board FPGA MFD driver interface + * + * Copyright (c) 2017, Emutex Ltd. All rights reserved. + * + * Author: Javier Arteaga + */ + +#ifndef __LINUX_MFD_UPBOARD_FPGA_H +#define __LINUX_MFD_UPBOARD_FPGA_H + +#define UPFPGA_ADDRESS_SIZE 7 +#define UPFPGA_REGISTER_SIZE 16 + +#define UPFPGA_READ_FLAG (1 << UPFPGA_ADDRESS_SIZE) + +enum upboard_fpgareg { + UPFPGA_REG_PLATFORM_ID = 0x10, + UPFPGA_REG_FIRMWARE_ID = 0x11, + UPFPGA_REG_FUNC_EN0 = 0x20, + UPFPGA_REG_FUNC_EN1 = 0x21, + UPFPGA_REG_GPIO_EN0 = 0x30, + UPFPGA_REG_GPIO_EN1 = 0x31, + UPFPGA_REG_GPIO_EN2 = 0x32, + UPFPGA_REG_GPIO_DIR0 = 0x40, + UPFPGA_REG_GPIO_DIR1 = 0x41, + UPFPGA_REG_GPIO_DIR2 = 0x42, + UPFPGA_REG_MAX, +}; + +struct upboard_fpga { + struct device *dev; + struct regmap *regmap; + struct gpio_desc *enable_gpio; + struct gpio_desc *reset_gpio; + struct gpio_desc *clear_gpio; + struct gpio_desc *strobe_gpio; + struct gpio_desc *datain_gpio; + struct gpio_desc *dataout_gpio; + bool uninitialised; +}; + +struct upboard_led_data { + unsigned int bit; + const char *colour; +}; + +#endif /* __LINUX_MFD_UPBOARD_FPGA_H */ From patchwork Wed Oct 19 02:24:48 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: chengwei X-Patchwork-Id: 617364 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 16947C433FE for ; Wed, 19 Oct 2022 02:26:52 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229998AbiJSC0v (ORCPT ); Tue, 18 Oct 2022 22:26:51 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:42500 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229826AbiJSC0q (ORCPT ); Tue, 18 Oct 2022 22:26:46 -0400 Received: from mail-pj1-x102b.google.com (mail-pj1-x102b.google.com [IPv6:2607:f8b0:4864:20::102b]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 5329AE3197; Tue, 18 Oct 2022 19:26:30 -0700 (PDT) Received: by mail-pj1-x102b.google.com with SMTP id a6-20020a17090abe0600b0020d7c0c6650so19249965pjs.0; Tue, 18 Oct 2022 19:26:30 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=references:in-reply-to:message-id:date:subject:cc:to:from:from:to :cc:subject:date:message-id:reply-to; bh=Tryy+T8k8LtGGtricW5LfvH+7TvK0uVdc6l7ZzgoMvc=; b=ONiC1mewbWRJzEqkfIaNJEk+17H2VF2kLKN8+g7BNGc2YhPJpT2WxtqK2jbbAQJvTR xIWGaUgLasai5m8c97d+d9tlToDwdsu4jaftbqKJF8tPhRlXMdMqtHFIE2EXS0RtMOhf P0duIYuLlOuRhI7iowavHCeJMS8KaqUpGuqmPUhhASaIrZhrABO0I3j/wO4Z40ah11ez wwn0jXmK4Q13cHqBZCXpxsd50qdcYTmu2kIKs3xHzWULBUrK3V9UM4OLpwzt3Pv1Bdou /OwlgXJ0JKrvOonipM2j1jFHE0Oz1GNg1QvWXmLrDnafDZK2AoFxV7nK+L0ruFJSXjlT nb6g== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=references:in-reply-to:message-id:date:subject:cc:to:from :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=Tryy+T8k8LtGGtricW5LfvH+7TvK0uVdc6l7ZzgoMvc=; b=JEsk1hlizXqjSwYNkY+DJ6mTR9Y9vo8F6KUMOW4eLONJCegO9BZhDmrUBs1xhuJFte I/Uua1qI+CngQoAiUXhqw5/E3dcbLQb28h203eenPpjjamEu/LZcj6Y8tjKMnvVv5ecu VgJOY74G9iAoWn4TwAm8BbADPrA/mOCSu50J8emmRvrqQnVy7zLeF+5VShqZyyBPpXT2 ivISIqnmbdnRvFY8iCaXiClB7xoy6CvC3HZxyAndqmyBa6JeeMZRmU7eM3lnk5R50Ve8 yxY6mpIg7SEyFTuj4Mx9cDTKkDmUhc8eshhV31MuAy0scbRnYWG62KErWMoVC9CAUxrv E0PQ== X-Gm-Message-State: ACrzQf0DIm0+myzc0AL8hZZoHrt6/z21HBfl30eOiG4X21Yv37g1TRsC oLNQAWBmFJxDJcPwC2BKkg== X-Google-Smtp-Source: AMsMyM4/XWRaazryepPYKfOqegg9nar3UenRsypsdLeuWcvecUttVn4H5ujTcPjGxBzKvyuQ+xtqiQ== X-Received: by 2002:a17:90b:1649:b0:20d:2d96:6b05 with SMTP id il9-20020a17090b164900b0020d2d966b05mr42773234pjb.9.1666146389152; Tue, 18 Oct 2022 19:26:29 -0700 (PDT) Received: from localhost.localdomain ([106.104.115.142]) by smtp.gmail.com with ESMTPSA id x185-20020a6263c2000000b00562a526cd2esm9855880pfb.55.2022.10.18.19.26.26 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 18 Oct 2022 19:26:28 -0700 (PDT) From: chengwei X-Google-Original-From: chengwei To: lee@kernel.org, broonie@kernel.org, rafael@kernel.org, mika.westerberg@linux.intel.com, andriy.shevchenko@linux.intel.com, linus.walleij@linaro.org, brgl@bgdev.pl Cc: linux-kernel@vger.kernel.org, gregkh@linuxfoundation.org, lenb@kernel.org, linux-acpi@vger.kernel.org, linux-gpio@vger.kernel.org, GaryWang@aaeon.com.tw, musa.lin@yunjingtech.com, jack.chang@yunjingtech.com, chengwei Subject: [PATCH 3/5] ACPI: acpi_node_add_pin_mapping added to header file Date: Wed, 19 Oct 2022 10:24:48 +0800 Message-Id: <20221019022450.16851-4-larry.lai@yunjingtech.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20221019022450.16851-1-larry.lai@yunjingtech.com> References: <20221019022450.16851-1-larry.lai@yunjingtech.com> Precedence: bulk List-ID: X-Mailing-List: linux-gpio@vger.kernel.org Declare acpi_node_add_pin_mapping added for pinctrl-upboard reference. Signed-off-by: chengwei --- include/linux/acpi.h | 14 ++++++++++++++ 1 file changed, 14 insertions(+) diff --git a/include/linux/acpi.h b/include/linux/acpi.h index 6f64b2f3dc54..7b4668342de0 100644 --- a/include/linux/acpi.h +++ b/include/linux/acpi.h @@ -1203,6 +1203,11 @@ bool acpi_gpio_get_irq_resource(struct acpi_resource *ares, bool acpi_gpio_get_io_resource(struct acpi_resource *ares, struct acpi_resource_gpio **agpio); int acpi_dev_gpio_irq_get_by(struct acpi_device *adev, const char *name, int index); +int acpi_node_add_pin_mapping(struct fwnode_handle *fwnode, + const char *propname, + const char *pinctl_name, + unsigned int pin_offset, + unsigned int npins); #else static inline bool acpi_gpio_get_irq_resource(struct acpi_resource *ares, struct acpi_resource_gpio **agpio) @@ -1219,6 +1224,15 @@ static inline int acpi_dev_gpio_irq_get_by(struct acpi_device *adev, { return -ENXIO; } + +static inline int acpi_node_add_pin_mapping(struct fwnode_handle *fwnode, + const char *propname, + const char *pinctl_name, + unsigned int pin_offset, + unsigned int npins) +{ + return -ENXIO; +} #endif static inline int acpi_dev_gpio_irq_get(struct acpi_device *adev, int index) From patchwork Wed Oct 19 02:24:50 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: chengwei X-Patchwork-Id: 617363 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 27219C433FE for ; Wed, 19 Oct 2022 02:27:19 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230074AbiJSC1R (ORCPT ); Tue, 18 Oct 2022 22:27:17 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:42978 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229955AbiJSC06 (ORCPT ); Tue, 18 Oct 2022 22:26:58 -0400 Received: from mail-pj1-x102d.google.com (mail-pj1-x102d.google.com [IPv6:2607:f8b0:4864:20::102d]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id EDC73E3193; 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Tue, 18 Oct 2022 19:26:38 -0700 (PDT) Received: from localhost.localdomain ([106.104.115.142]) by smtp.gmail.com with ESMTPSA id x185-20020a6263c2000000b00562a526cd2esm9855880pfb.55.2022.10.18.19.26.35 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 18 Oct 2022 19:26:38 -0700 (PDT) From: chengwei X-Google-Original-From: chengwei To: lee@kernel.org, broonie@kernel.org, rafael@kernel.org, mika.westerberg@linux.intel.com, andriy.shevchenko@linux.intel.com, linus.walleij@linaro.org, brgl@bgdev.pl Cc: linux-kernel@vger.kernel.org, gregkh@linuxfoundation.org, lenb@kernel.org, linux-acpi@vger.kernel.org, linux-gpio@vger.kernel.org, GaryWang@aaeon.com.tw, musa.lin@yunjingtech.com, jack.chang@yunjingtech.com, chengwei , Javier Arteaga , Nicola Lunghi Subject: [PATCH 5/5] pinctrl: Add support pin control for UP board CPLD/FPGA Date: Wed, 19 Oct 2022 10:24:50 +0800 Message-Id: <20221019022450.16851-6-larry.lai@yunjingtech.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20221019022450.16851-1-larry.lai@yunjingtech.com> References: <20221019022450.16851-1-larry.lai@yunjingtech.com> Precedence: bulk List-ID: X-Mailing-List: linux-gpio@vger.kernel.org The UP Squared board implements certain features (pin control) through an on-board FPGA. Signed-off-by: Javier Arteaga [merge various fixes] Signed-off-by: Nicola Lunghi Signed-off-by: chengwei --- drivers/pinctrl/Kconfig | 15 + drivers/pinctrl/Makefile | 1 + drivers/pinctrl/pinctrl-upboard.c | 1003 +++++++++++++++++++++++++++++ 3 files changed, 1019 insertions(+) create mode 100644 drivers/pinctrl/pinctrl-upboard.c diff --git a/drivers/pinctrl/Kconfig b/drivers/pinctrl/Kconfig index 1cf74b0c42e5..5d719eadecdb 100644 --- a/drivers/pinctrl/Kconfig +++ b/drivers/pinctrl/Kconfig @@ -483,6 +483,21 @@ config PINCTRL_THUNDERBAY rate control and direction control. This module will be called as pinctrl-thunderbay. +config PINCTRL_UPBOARD + tristate "UP board FPGA pin controller" + depends on ACPI + depends on MFD_UPBOARD_FPGA + depends on X86 + select GENERIC_PINCONF + select PINMUX + select PINCONF + help + Pin controller for the FPGA GPIO lines on UP boards. Due to the + hardware layout, these are meant to be controlled in tandem with their + corresponding Intel SoC GPIOs. + To compile this driver as a module, choose M here: the module + will be called pinctrl-upboard. + config PINCTRL_ZYNQ bool "Pinctrl driver for Xilinx Zynq" depends on ARCH_ZYNQ diff --git a/drivers/pinctrl/Makefile b/drivers/pinctrl/Makefile index e76f5cdc64b0..c366706d36e7 100644 --- a/drivers/pinctrl/Makefile +++ b/drivers/pinctrl/Makefile @@ -48,6 +48,7 @@ obj-$(CONFIG_PINCTRL_STMFX) += pinctrl-stmfx.o obj-$(CONFIG_PINCTRL_SX150X) += pinctrl-sx150x.o obj-$(CONFIG_PINCTRL_TB10X) += pinctrl-tb10x.o obj-$(CONFIG_PINCTRL_THUNDERBAY) += pinctrl-thunderbay.o +obj-$(CONFIG_PINCTRL_UPBOARD) += pinctrl-upboard.o obj-$(CONFIG_PINCTRL_ZYNQMP) += pinctrl-zynqmp.o obj-$(CONFIG_PINCTRL_ZYNQ) += pinctrl-zynq.o diff --git a/drivers/pinctrl/pinctrl-upboard.c b/drivers/pinctrl/pinctrl-upboard.c new file mode 100644 index 000000000000..39cd45357f6b --- /dev/null +++ b/drivers/pinctrl/pinctrl-upboard.c @@ -0,0 +1,1003 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * UP Board FPGA-based pin controller driver + * + * Copyright (c) 2017, Emutex Ltd. All rights reserved. + * + * Authors: Javier Arteaga + * Dan O'Donovan + * Nicola Lunghi + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include "core.h" + +struct upboard_pin { + struct regmap_field *funcbit; + struct regmap_field *enbit; + struct regmap_field *dirbit; +}; + +struct upboard_bios { + const struct reg_sequence *patches; + size_t npatches; +}; + +struct upboard_pinctrl { + struct device *dev; + struct pinctrl_dev *pctldev; + struct regmap *regmap; + struct gpio_chip chip; + const unsigned int *rpi_mapping; +}; + +enum upboard_func0_fpgabit { + UPFPGA_I2C0_EN = 8, + UPFPGA_I2C1_EN = 9, + UPFPGA_CEC0_EN = 12, + UPFPGA_ADC0_EN = 14, +}; + +static const struct reg_field upboard_i2c0_reg = + REG_FIELD(UPFPGA_REG_FUNC_EN0, UPFPGA_I2C0_EN, UPFPGA_I2C0_EN); + +static const struct reg_field upboard_i2c1_reg = + REG_FIELD(UPFPGA_REG_FUNC_EN0, UPFPGA_I2C1_EN, UPFPGA_I2C1_EN); + +static const struct reg_field upboard_adc0_reg = + REG_FIELD(UPFPGA_REG_FUNC_EN0, UPFPGA_ADC0_EN, UPFPGA_ADC0_EN); + +#define UPBOARD_BIT_TO_PIN(r, bit) \ + ((r) * UPFPGA_REGISTER_SIZE + (bit)) + +/* + * UP board data + */ + +#define UPBOARD_UP_BIT_TO_PIN(r, id) (UPBOARD_BIT_TO_PIN(r, UPFPGA_UP_##id)) + +#define UPBOARD_UP_PIN_ANON(r, bit) \ + { \ + .number = UPBOARD_BIT_TO_PIN(r, bit), \ + } + +#define UPBOARD_UP_PIN_NAME(r, id) \ + { \ + .number = UPBOARD_UP_BIT_TO_PIN(r, id), \ + .name = #id, \ + } + +#define UPBOARD_UP_PIN_FUNC(r, id, data) \ + { \ + .number = UPBOARD_UP_BIT_TO_PIN(r, id), \ + .name = #id, \ + .drv_data = (void *)(data), \ + } + +enum upboard_up_reg1_fpgabit { + UPFPGA_UP_I2C1_SDA, + UPFPGA_UP_I2C1_SCL, + UPFPGA_UP_ADC0, + UPFPGA_UP_GPIO17, + UPFPGA_UP_GPIO27, + UPFPGA_UP_GPIO22, + UPFPGA_UP_SPI_MOSI, + UPFPGA_UP_SPI_MISO, + UPFPGA_UP_SPI_CLK, + UPFPGA_UP_I2C0_SDA, + UPFPGA_UP_GPIO5, + UPFPGA_UP_GPIO6, + UPFPGA_UP_PWM1, + UPFPGA_UP_I2S_FRM, + UPFPGA_UP_GPIO26, + UPFPGA_UP_UART1_TX, +}; + +enum upboard_up_reg2_fpgabit { + UPFPGA_UP_UART1_RX, + UPFPGA_UP_I2S_CLK, + UPFPGA_UP_GPIO23, + UPFPGA_UP_GPIO24, + UPFPGA_UP_GPIO25, + UPFPGA_UP_SPI_CS0, + UPFPGA_UP_SPI_CS1, + UPFPGA_UP_I2C0_SCL, + UPFPGA_UP_PWM0, + UPFPGA_UP_GPIO16, + UPFPGA_UP_I2S_DIN, + UPFPGA_UP_I2S_DOUT, +}; + +static struct pinctrl_pin_desc upboard_up_pins[] = { + UPBOARD_UP_PIN_FUNC(0, I2C1_SDA, &upboard_i2c1_reg), + UPBOARD_UP_PIN_FUNC(0, I2C1_SCL, &upboard_i2c1_reg), + UPBOARD_UP_PIN_FUNC(0, ADC0, &upboard_adc0_reg), + UPBOARD_UP_PIN_NAME(0, GPIO17), + UPBOARD_UP_PIN_NAME(0, GPIO27), + UPBOARD_UP_PIN_NAME(0, GPIO22), + UPBOARD_UP_PIN_NAME(0, SPI_MOSI), + UPBOARD_UP_PIN_NAME(0, SPI_MISO), + UPBOARD_UP_PIN_NAME(0, SPI_CLK), + UPBOARD_UP_PIN_FUNC(0, I2C0_SDA, &upboard_i2c0_reg), + UPBOARD_UP_PIN_NAME(0, GPIO5), + UPBOARD_UP_PIN_NAME(0, GPIO6), + UPBOARD_UP_PIN_NAME(0, PWM1), + UPBOARD_UP_PIN_NAME(0, I2S_FRM), + UPBOARD_UP_PIN_NAME(0, GPIO26), + UPBOARD_UP_PIN_NAME(0, UART1_TX), + /* register 1 */ + UPBOARD_UP_PIN_NAME(1, UART1_RX), + UPBOARD_UP_PIN_NAME(1, I2S_CLK), + UPBOARD_UP_PIN_NAME(1, GPIO23), + UPBOARD_UP_PIN_NAME(1, GPIO24), + UPBOARD_UP_PIN_NAME(1, GPIO25), + UPBOARD_UP_PIN_NAME(1, SPI_CS0), + UPBOARD_UP_PIN_NAME(1, SPI_CS1), + UPBOARD_UP_PIN_FUNC(1, I2C0_SCL, &upboard_i2c0_reg), + UPBOARD_UP_PIN_NAME(1, PWM0), + UPBOARD_UP_PIN_NAME(1, GPIO16), + UPBOARD_UP_PIN_NAME(1, I2S_DIN), + UPBOARD_UP_PIN_NAME(1, I2S_DOUT), +}; + +static const unsigned int upboard_up_rpi_mapping[] = { + UPBOARD_UP_BIT_TO_PIN(0, I2C0_SDA), + UPBOARD_UP_BIT_TO_PIN(1, I2C0_SCL), + UPBOARD_UP_BIT_TO_PIN(0, I2C1_SDA), + UPBOARD_UP_BIT_TO_PIN(0, I2C1_SCL), + UPBOARD_UP_BIT_TO_PIN(0, ADC0), + UPBOARD_UP_BIT_TO_PIN(0, GPIO5), + UPBOARD_UP_BIT_TO_PIN(0, GPIO6), + UPBOARD_UP_BIT_TO_PIN(1, SPI_CS1), + UPBOARD_UP_BIT_TO_PIN(1, SPI_CS0), + UPBOARD_UP_BIT_TO_PIN(0, SPI_MISO), + UPBOARD_UP_BIT_TO_PIN(0, SPI_MOSI), + UPBOARD_UP_BIT_TO_PIN(0, SPI_CLK), + UPBOARD_UP_BIT_TO_PIN(1, PWM0), + UPBOARD_UP_BIT_TO_PIN(0, PWM1), + UPBOARD_UP_BIT_TO_PIN(0, UART1_TX), + UPBOARD_UP_BIT_TO_PIN(1, UART1_RX), + UPBOARD_UP_BIT_TO_PIN(1, GPIO16), + UPBOARD_UP_BIT_TO_PIN(0, GPIO17), + UPBOARD_UP_BIT_TO_PIN(1, I2S_CLK), + UPBOARD_UP_BIT_TO_PIN(0, I2S_FRM), + UPBOARD_UP_BIT_TO_PIN(1, I2S_DIN), + UPBOARD_UP_BIT_TO_PIN(1, I2S_DOUT), + UPBOARD_UP_BIT_TO_PIN(0, GPIO22), + UPBOARD_UP_BIT_TO_PIN(1, GPIO23), + UPBOARD_UP_BIT_TO_PIN(1, GPIO24), + UPBOARD_UP_BIT_TO_PIN(1, GPIO25), + UPBOARD_UP_BIT_TO_PIN(0, GPIO26), + UPBOARD_UP_BIT_TO_PIN(0, GPIO27), +}; + +/* + * Init patches applied to the registers until the BIOS sets proper defaults + */ +static const struct reg_sequence upboard_up_reg_patches[] __initconst = { + { UPFPGA_REG_FUNC_EN0, + // enable I2C voltage-level shifters + BIT(UPFPGA_I2C0_EN) | + BIT(UPFPGA_I2C1_EN) | + // enable adc + BIT(UPFPGA_ADC0_EN) + }, + /* HAT function pins initially set as inputs */ + { UPFPGA_REG_GPIO_DIR0, + BIT(UPFPGA_UP_I2C1_SDA) | + BIT(UPFPGA_UP_I2C1_SCL) | + BIT(UPFPGA_UP_ADC0) | + BIT(UPFPGA_UP_GPIO27) | + BIT(UPFPGA_UP_GPIO22) | + BIT(UPFPGA_UP_SPI_MISO) | + BIT(UPFPGA_UP_I2C0_SDA) | + BIT(UPFPGA_UP_GPIO5) | + BIT(UPFPGA_UP_GPIO6) | + BIT(UPFPGA_UP_GPIO26) + }, + { UPFPGA_REG_GPIO_DIR1, + BIT(UPFPGA_UP_UART1_RX) | + BIT(UPFPGA_UP_GPIO23) | + BIT(UPFPGA_UP_GPIO24) | + BIT(UPFPGA_UP_GPIO25) | + BIT(UPFPGA_UP_I2C0_SCL) | + BIT(UPFPGA_UP_GPIO16) | + BIT(UPFPGA_UP_I2S_DIN) + }, +}; + +static const struct upboard_bios upboard_up_bios_info_dvt __initconst = { + .patches = upboard_up_reg_patches, + .npatches = ARRAY_SIZE(upboard_up_reg_patches), +}; + +/* + * UP^2 board data + */ + +#define UPBOARD_UP2_BIT_TO_PIN(r, id) (UPBOARD_BIT_TO_PIN(r, UPFPGA_UP2_##id)) + +#define UPBOARD_UP2_PIN_ANON(r, bit) \ + { \ + .number = UPBOARD_BIT_TO_PIN(r, bit), \ + } + +#define UPBOARD_UP2_PIN_NAME(r, id) \ + { \ + .number = UPBOARD_UP2_BIT_TO_PIN(r, id), \ + .name = #id, \ + } + +#define UPBOARD_UP2_PIN_FUNC(r, id, data) \ + { \ + .number = UPBOARD_UP2_BIT_TO_PIN(r, id), \ + .name = #id, \ + .drv_data = (void *)(data), \ + } + +enum upboard_up2_reg0_fpgabit { + UPFPGA_UP2_UART1_TXD, + UPFPGA_UP2_UART1_RXD, + UPFPGA_UP2_UART1_RTS, + UPFPGA_UP2_UART1_CTS, + UPFPGA_UP2_GPIO3, + UPFPGA_UP2_GPIO5, + UPFPGA_UP2_GPIO6, + UPFPGA_UP2_GPIO11, + UPFPGA_UP2_EXHAT_LVDS1n, + UPFPGA_UP2_EXHAT_LVDS1p, + UPFPGA_UP2_SPI2_TXD, + UPFPGA_UP2_SPI2_RXD, + UPFPGA_UP2_SPI2_FS1, + UPFPGA_UP2_SPI2_FS0, + UPFPGA_UP2_SPI2_CLK, + UPFPGA_UP2_SPI1_TXD, +}; + +enum upboard_up2_reg1_fpgabit { + UPFPGA_UP2_SPI1_RXD, + UPFPGA_UP2_SPI1_FS1, + UPFPGA_UP2_SPI1_FS0, + UPFPGA_UP2_SPI1_CLK, + UPFPGA_UP2_BIT20, + UPFPGA_UP2_BIT21, + UPFPGA_UP2_BIT22, + UPFPGA_UP2_BIT23, + UPFPGA_UP2_PWM1, + UPFPGA_UP2_PWM0, + UPFPGA_UP2_EXHAT_LVDS0n, + UPFPGA_UP2_EXHAT_LVDS0p, + UPFPGA_UP2_I2C0_SCL, + UPFPGA_UP2_I2C0_SDA, + UPFPGA_UP2_I2C1_SCL, + UPFPGA_UP2_I2C1_SDA, +}; + +enum upboard_up2_reg2_fpgabit { + UPFPGA_UP2_EXHAT_LVDS3n, + UPFPGA_UP2_EXHAT_LVDS3p, + UPFPGA_UP2_EXHAT_LVDS4n, + UPFPGA_UP2_EXHAT_LVDS4p, + UPFPGA_UP2_EXHAT_LVDS5n, + UPFPGA_UP2_EXHAT_LVDS5p, + UPFPGA_UP2_I2S_SDO, + UPFPGA_UP2_I2S_SDI, + UPFPGA_UP2_I2S_WS_SYNC, + UPFPGA_UP2_I2S_BCLK, + UPFPGA_UP2_EXHAT_LVDS6n, + UPFPGA_UP2_EXHAT_LVDS6p, + UPFPGA_UP2_EXHAT_LVDS7n, + UPFPGA_UP2_EXHAT_LVDS7p, + UPFPGA_UP2_EXHAT_LVDS2n, + UPFPGA_UP2_EXHAT_LVDS2p, +}; + +static struct pinctrl_pin_desc upboard_up2_pins[] = { + UPBOARD_UP2_PIN_NAME(0, UART1_TXD), + UPBOARD_UP2_PIN_NAME(0, UART1_RXD), + UPBOARD_UP2_PIN_NAME(0, UART1_RTS), + UPBOARD_UP2_PIN_NAME(0, UART1_CTS), + UPBOARD_UP2_PIN_NAME(0, GPIO3), + UPBOARD_UP2_PIN_NAME(0, GPIO5), + UPBOARD_UP2_PIN_NAME(0, GPIO6), + UPBOARD_UP2_PIN_NAME(0, GPIO11), + UPBOARD_UP2_PIN_NAME(0, EXHAT_LVDS1n), + UPBOARD_UP2_PIN_NAME(0, EXHAT_LVDS1p), + UPBOARD_UP2_PIN_NAME(0, SPI2_TXD), + UPBOARD_UP2_PIN_NAME(0, SPI2_RXD), + UPBOARD_UP2_PIN_NAME(0, SPI2_FS1), + UPBOARD_UP2_PIN_NAME(0, SPI2_FS0), + UPBOARD_UP2_PIN_NAME(0, SPI2_CLK), + UPBOARD_UP2_PIN_NAME(0, SPI1_TXD), + UPBOARD_UP2_PIN_NAME(1, SPI1_RXD), + UPBOARD_UP2_PIN_NAME(1, SPI1_FS1), + UPBOARD_UP2_PIN_NAME(1, SPI1_FS0), + UPBOARD_UP2_PIN_NAME(1, SPI1_CLK), + UPBOARD_UP2_PIN_ANON(1, 4), + UPBOARD_UP2_PIN_ANON(1, 5), + UPBOARD_UP2_PIN_ANON(1, 6), + UPBOARD_UP2_PIN_ANON(1, 7), + UPBOARD_UP2_PIN_NAME(1, PWM1), + UPBOARD_UP2_PIN_NAME(1, PWM0), + UPBOARD_UP2_PIN_NAME(1, EXHAT_LVDS0n), + UPBOARD_UP2_PIN_NAME(1, EXHAT_LVDS0p), + UPBOARD_UP2_PIN_FUNC(1, I2C0_SCL, &upboard_i2c0_reg), + UPBOARD_UP2_PIN_FUNC(1, I2C0_SDA, &upboard_i2c0_reg), + UPBOARD_UP2_PIN_FUNC(1, I2C1_SCL, &upboard_i2c1_reg), + UPBOARD_UP2_PIN_FUNC(1, I2C1_SDA, &upboard_i2c1_reg), + UPBOARD_UP2_PIN_NAME(2, EXHAT_LVDS3n), + UPBOARD_UP2_PIN_NAME(2, EXHAT_LVDS3p), + UPBOARD_UP2_PIN_NAME(2, EXHAT_LVDS4n), + UPBOARD_UP2_PIN_NAME(2, EXHAT_LVDS4p), + UPBOARD_UP2_PIN_NAME(2, EXHAT_LVDS5n), + UPBOARD_UP2_PIN_NAME(2, EXHAT_LVDS5p), + UPBOARD_UP2_PIN_NAME(2, I2S_SDO), + UPBOARD_UP2_PIN_NAME(2, I2S_SDI), + UPBOARD_UP2_PIN_NAME(2, I2S_WS_SYNC), + UPBOARD_UP2_PIN_NAME(2, I2S_BCLK), + UPBOARD_UP2_PIN_NAME(2, EXHAT_LVDS6n), + UPBOARD_UP2_PIN_NAME(2, EXHAT_LVDS6p), + UPBOARD_UP2_PIN_NAME(2, EXHAT_LVDS7n), + UPBOARD_UP2_PIN_NAME(2, EXHAT_LVDS7p), + UPBOARD_UP2_PIN_NAME(2, EXHAT_LVDS2n), + UPBOARD_UP2_PIN_NAME(2, EXHAT_LVDS2p), +}; + +static const unsigned int upboard_up2_rpi_mapping[] = { + UPBOARD_UP2_BIT_TO_PIN(1, I2C0_SDA), + UPBOARD_UP2_BIT_TO_PIN(1, I2C0_SCL), + UPBOARD_UP2_BIT_TO_PIN(1, I2C1_SDA), + UPBOARD_UP2_BIT_TO_PIN(1, I2C1_SCL), + UPBOARD_UP2_BIT_TO_PIN(0, GPIO3), + UPBOARD_UP2_BIT_TO_PIN(0, GPIO11), + UPBOARD_UP2_BIT_TO_PIN(0, SPI2_CLK), + UPBOARD_UP2_BIT_TO_PIN(1, SPI1_FS1), + UPBOARD_UP2_BIT_TO_PIN(1, SPI1_FS0), + UPBOARD_UP2_BIT_TO_PIN(1, SPI1_RXD), + UPBOARD_UP2_BIT_TO_PIN(0, SPI1_TXD), + UPBOARD_UP2_BIT_TO_PIN(1, SPI1_CLK), + UPBOARD_UP2_BIT_TO_PIN(1, PWM0), + UPBOARD_UP2_BIT_TO_PIN(1, PWM1), + UPBOARD_UP2_BIT_TO_PIN(0, UART1_TXD), + UPBOARD_UP2_BIT_TO_PIN(0, UART1_RXD), + UPBOARD_UP2_BIT_TO_PIN(0, UART1_CTS), + UPBOARD_UP2_BIT_TO_PIN(0, UART1_RTS), + UPBOARD_UP2_BIT_TO_PIN(2, I2S_BCLK), + UPBOARD_UP2_BIT_TO_PIN(2, I2S_WS_SYNC), + UPBOARD_UP2_BIT_TO_PIN(2, I2S_SDI), + UPBOARD_UP2_BIT_TO_PIN(2, I2S_SDO), + UPBOARD_UP2_BIT_TO_PIN(0, GPIO6), + UPBOARD_UP2_BIT_TO_PIN(0, SPI2_FS1), + UPBOARD_UP2_BIT_TO_PIN(0, SPI2_RXD), + UPBOARD_UP2_BIT_TO_PIN(0, SPI2_TXD), + UPBOARD_UP2_BIT_TO_PIN(0, SPI2_FS0), + UPBOARD_UP2_BIT_TO_PIN(0, GPIO5), +}; + +/* + * Init patches applied to the registers until the BIOS sets proper defaults + */ +static const struct reg_sequence upboard_up2_reg_patches[] __initconst = { + // enable I2C voltage-level shifters + { UPFPGA_REG_FUNC_EN0, + BIT(UPFPGA_I2C0_EN) | + BIT(UPFPGA_I2C1_EN) + }, + // HAT function pins initially set as inputs + { UPFPGA_REG_GPIO_DIR0, + BIT(UPFPGA_UP2_UART1_RXD) | + BIT(UPFPGA_UP2_UART1_CTS) + }, + { UPFPGA_REG_GPIO_DIR1, + BIT(UPFPGA_UP2_SPI1_RXD) + }, + // HAT function pins initially enabled (i.e. not hi-Z) + { UPFPGA_REG_GPIO_EN0, + BIT(UPFPGA_UP2_UART1_TXD) | + BIT(UPFPGA_UP2_UART1_RXD) | + BIT(UPFPGA_UP2_UART1_RTS) | + BIT(UPFPGA_UP2_UART1_CTS) | + BIT(UPFPGA_UP2_SPI1_TXD) + }, + { UPFPGA_REG_GPIO_EN1, + BIT(UPFPGA_UP2_SPI1_RXD) | + BIT(UPFPGA_UP2_SPI1_FS1) | + BIT(UPFPGA_UP2_SPI1_FS0) | + BIT(UPFPGA_UP2_SPI1_CLK) | + BIT(UPFPGA_UP2_PWM1) | + BIT(UPFPGA_UP2_PWM0) + }, +}; + +static const struct upboard_bios upboard_up2_bios_info_v0_3 __initconst = { + .patches = upboard_up2_reg_patches, + .npatches = ARRAY_SIZE(upboard_up2_reg_patches), +}; + +/* + * UP Core board + CREX carrier board data + */ + +#define UPBOARD_UPCORE_CREX_BIT_TO_PIN(r, id) \ + (UPBOARD_BIT_TO_PIN(r, UPFPGA_UPCORE_CREX_##id)) + +#define UPBOARD_UPCORE_CREX_PIN_ANON(r, bit) \ + { \ + .number = UPBOARD_BIT_TO_PIN(r, bit), \ + } + +#define UPBOARD_UPCORE_CREX_PIN_NAME(r, id) \ + { \ + .number = UPBOARD_UPCORE_CREX_BIT_TO_PIN(r, id), \ + .name = #id, \ + } + +#define UPBOARD_UPCORE_CREX_PIN_FUNC(r, id, data) \ + { \ + .number = UPBOARD_UPCORE_CREX_BIT_TO_PIN(r, id), \ + .name = #id, \ + .drv_data = (void *)(data), \ + } + +enum upboard_upcore_crex_reg1_fpgabit { + UPFPGA_UPCORE_CREX_I2C0_SDA, + UPFPGA_UPCORE_CREX_I2C0_SCL, + UPFPGA_UPCORE_CREX_I2C1_SDA, + UPFPGA_UPCORE_CREX_I2C1_SCL, + UPFPGA_UPCORE_CREX_SPI2_CS0, + UPFPGA_UPCORE_CREX_SPI2_CS1, + UPFPGA_UPCORE_CREX_SPI2_MOSI, + UPFPGA_UPCORE_CREX_SPI2_MISO, + UPFPGA_UPCORE_CREX_SPI2_CLK, + UPFPGA_UPCORE_CREX_UART1_TXD, + UPFPGA_UPCORE_CREX_UART1_RXD, + UPFPGA_UPCORE_CREX_PWM0, + UPFPGA_UPCORE_CREX_PWM1, + UPFPGA_UPCORE_CREX_I2S2_FRM, + UPFPGA_UPCORE_CREX_I2S2_CLK, + UPFPGA_UPCORE_CREX_I2S2_RX, +}; + +enum upboard_upcore_crex_reg2_fpgabit { + UPFPGA_UPCORE_CREX_I2S2_TX, + UPFPGA_UPCORE_CREX_GPIO0, + UPFPGA_UPCORE_CREX_GPIO2, + UPFPGA_UPCORE_CREX_GPIO3, + UPFPGA_UPCORE_CREX_GPIO4, + UPFPGA_UPCORE_CREX_GPIO9, +}; + +static struct pinctrl_pin_desc upboard_upcore_crex_pins[] = { + UPBOARD_UPCORE_CREX_PIN_FUNC(0, I2C0_SDA, &upboard_i2c0_reg), + UPBOARD_UPCORE_CREX_PIN_FUNC(0, I2C0_SCL, &upboard_i2c0_reg), + UPBOARD_UPCORE_CREX_PIN_FUNC(0, I2C1_SDA, &upboard_i2c1_reg), + UPBOARD_UPCORE_CREX_PIN_FUNC(0, I2C1_SCL, &upboard_i2c1_reg), + UPBOARD_UPCORE_CREX_PIN_NAME(0, SPI2_CS0), + UPBOARD_UPCORE_CREX_PIN_NAME(0, SPI2_CS1), + UPBOARD_UPCORE_CREX_PIN_NAME(0, SPI2_MOSI), + UPBOARD_UPCORE_CREX_PIN_NAME(0, SPI2_MISO), + UPBOARD_UPCORE_CREX_PIN_NAME(0, SPI2_CLK), + UPBOARD_UPCORE_CREX_PIN_NAME(0, UART1_TXD), + UPBOARD_UPCORE_CREX_PIN_NAME(0, UART1_RXD), + UPBOARD_UPCORE_CREX_PIN_NAME(0, PWM0), + UPBOARD_UPCORE_CREX_PIN_NAME(0, PWM1), + UPBOARD_UPCORE_CREX_PIN_NAME(0, I2S2_FRM), + UPBOARD_UPCORE_CREX_PIN_NAME(0, I2S2_CLK), + UPBOARD_UPCORE_CREX_PIN_NAME(0, I2S2_RX), + /* register 1 */ + UPBOARD_UPCORE_CREX_PIN_NAME(1, I2S2_TX), + UPBOARD_UPCORE_CREX_PIN_NAME(1, GPIO0), + UPBOARD_UPCORE_CREX_PIN_FUNC(1, GPIO2, &upboard_adc0_reg), + UPBOARD_UPCORE_CREX_PIN_NAME(1, GPIO3), + UPBOARD_UPCORE_CREX_PIN_NAME(1, GPIO4), + UPBOARD_UPCORE_CREX_PIN_NAME(1, GPIO9), +}; + +static unsigned int upboard_upcore_crex_rpi_mapping[] = { + UPBOARD_UPCORE_CREX_BIT_TO_PIN(0, I2C0_SDA), + UPBOARD_UPCORE_CREX_BIT_TO_PIN(0, I2C0_SCL), + UPBOARD_UPCORE_CREX_BIT_TO_PIN(0, I2C1_SDA), + UPBOARD_UPCORE_CREX_BIT_TO_PIN(0, I2C1_SCL), + UPBOARD_UPCORE_CREX_BIT_TO_PIN(1, GPIO0), + UPBOARD_UPCORE_CREX_BIT_TO_PIN(1, GPIO2), + UPBOARD_UPCORE_CREX_BIT_TO_PIN(1, GPIO3), + UPBOARD_UPCORE_CREX_BIT_TO_PIN(0, SPI2_CS1), + UPBOARD_UPCORE_CREX_BIT_TO_PIN(0, SPI2_CS0), + UPBOARD_UPCORE_CREX_BIT_TO_PIN(0, SPI2_MISO), + UPBOARD_UPCORE_CREX_BIT_TO_PIN(0, SPI2_MOSI), + UPBOARD_UPCORE_CREX_BIT_TO_PIN(0, SPI2_CLK), + UPBOARD_UPCORE_CREX_BIT_TO_PIN(0, PWM0), + UPBOARD_UPCORE_CREX_BIT_TO_PIN(0, PWM1), + UPBOARD_UPCORE_CREX_BIT_TO_PIN(0, UART1_TXD), + UPBOARD_UPCORE_CREX_BIT_TO_PIN(0, UART1_RXD), + UPBOARD_UPCORE_CREX_BIT_TO_PIN(1, GPIO9), + UPBOARD_UPCORE_CREX_BIT_TO_PIN(1, GPIO4), + UPBOARD_UPCORE_CREX_BIT_TO_PIN(0, I2S2_CLK), + UPBOARD_UPCORE_CREX_BIT_TO_PIN(0, I2S2_FRM), + UPBOARD_UPCORE_CREX_BIT_TO_PIN(0, I2S2_RX), + UPBOARD_UPCORE_CREX_BIT_TO_PIN(1, I2S2_TX), +}; + +/* + * Init patches applied to the registers until the BIOS sets proper defaults + */ +static const struct reg_sequence upboard_upcore_crex_reg_patches[] __initconst = { + // enable I2C voltage-level shifters + { UPFPGA_REG_FUNC_EN0, + BIT(UPFPGA_I2C0_EN) | + BIT(UPFPGA_I2C1_EN) + }, + // HAT function pins initially set as inputs + { UPFPGA_REG_GPIO_DIR0, + BIT(UPFPGA_UPCORE_CREX_SPI2_MISO) | + BIT(UPFPGA_UPCORE_CREX_UART1_RXD) | + BIT(UPFPGA_UPCORE_CREX_I2S2_FRM) | + BIT(UPFPGA_UPCORE_CREX_I2S2_CLK) | + BIT(UPFPGA_UPCORE_CREX_I2S2_RX) + }, +}; + +static const struct upboard_bios upboard_upcore_crex_bios_info __initconst = { + .patches = upboard_upcore_crex_reg_patches, + .npatches = ARRAY_SIZE(upboard_upcore_crex_reg_patches), +}; + +/* + * UP Core board + CRST02 carrier board data + */ + +#define upboard_upcore_crst02_pins upboard_upcore_crex_pins +#define upboard_upcore_crst02_rpi_mapping upboard_upcore_crex_rpi_mapping + +/* + * Init patches applied to the registers until the BIOS sets proper defaults + */ +static const struct reg_sequence upboard_upcore_crst02_reg_patches[] __initconst = { + // enable I2C voltage-level shifters + { UPFPGA_REG_FUNC_EN0, + BIT(UPFPGA_I2C0_EN) | + BIT(UPFPGA_I2C1_EN) + }, + // HAT function pins initially set as inputs + { UPFPGA_REG_GPIO_DIR0, + BIT(UPFPGA_UPCORE_CREX_SPI2_MISO) | + BIT(UPFPGA_UPCORE_CREX_UART1_RXD) | + BIT(UPFPGA_UPCORE_CREX_I2S2_FRM) | + BIT(UPFPGA_UPCORE_CREX_I2S2_CLK) | + BIT(UPFPGA_UPCORE_CREX_I2S2_RX) + }, + // HAT function pins initially enabled (i.e. not hi-Z) + { UPFPGA_REG_GPIO_EN0, + BIT(UPFPGA_UPCORE_CREX_SPI2_CS0) | + BIT(UPFPGA_UPCORE_CREX_SPI2_MOSI) | + BIT(UPFPGA_UPCORE_CREX_SPI2_MISO) | + BIT(UPFPGA_UPCORE_CREX_SPI2_CLK) | + BIT(UPFPGA_UPCORE_CREX_UART1_TXD) | + BIT(UPFPGA_UPCORE_CREX_UART1_RXD) | + BIT(UPFPGA_UPCORE_CREX_PWM0) | + BIT(UPFPGA_UPCORE_CREX_PWM1) | + BIT(UPFPGA_UPCORE_CREX_I2S2_FRM) | + BIT(UPFPGA_UPCORE_CREX_I2S2_CLK) | + BIT(UPFPGA_UPCORE_CREX_I2S2_RX) + }, + { UPFPGA_REG_GPIO_EN1, + BIT(UPFPGA_UPCORE_CREX_I2S2_TX) + }, +}; + +static const struct upboard_bios upboard_upcore_crst02_bios_info __initconst = { + .patches = upboard_upcore_crst02_reg_patches, + .npatches = ARRAY_SIZE(upboard_upcore_crst02_reg_patches), +}; + +static int upboard_set_mux(struct pinctrl_dev *pctldev, unsigned int function, + unsigned int group) +{ + return 0; +}; + +static int upboard_gpio_request_enable(struct pinctrl_dev *pctldev, + struct pinctrl_gpio_range *range, + unsigned int pin) +{ + const struct pin_desc * const pd = pin_desc_get(pctldev, pin); + const struct upboard_pin *p; + int ret; + + if (!pd) + return -EINVAL; + p = pd->drv_data; + + if (p->funcbit) { + ret = regmap_field_write(p->funcbit, 0); + if (ret) + return ret; + } + + if (p->enbit) { + ret = regmap_field_write(p->enbit, 1); + if (ret) + return ret; + } + + return 0; +}; + +static int upboard_gpio_set_direction(struct pinctrl_dev *pctldev, + struct pinctrl_gpio_range *range, + unsigned int pin, bool input) +{ + const struct pin_desc * const pd = pin_desc_get(pctldev, pin); + const struct upboard_pin *p; + + if (!pd) + return -EINVAL; + p = pd->drv_data; + + return regmap_field_write(p->dirbit, input); +}; + +static int upboard_get_functions_count(struct pinctrl_dev *pctldev) +{ + return 0; +} + +static const char *upboard_get_function_name(struct pinctrl_dev *pctldev, + unsigned int selector) +{ + return NULL; +} + +static int upboard_get_function_groups(struct pinctrl_dev *pctldev, + unsigned int selector, + const char * const **groups, + unsigned int *num_groups) +{ + *groups = NULL; + *num_groups = 0; + return 0; +} + +static const struct pinmux_ops upboard_pinmux_ops = { + .get_functions_count = upboard_get_functions_count, + .get_function_groups = upboard_get_function_groups, + .get_function_name = upboard_get_function_name, + .set_mux = upboard_set_mux, + .gpio_request_enable = upboard_gpio_request_enable, + .gpio_set_direction = upboard_gpio_set_direction, +}; + +static int upboard_get_groups_count(struct pinctrl_dev *pctldev) +{ + return 0; +} + +static const char *upboard_get_group_name(struct pinctrl_dev *pctldev, + unsigned int selector) +{ + return NULL; +} + +static const struct pinctrl_ops upboard_pinctrl_ops = { + .get_groups_count = upboard_get_groups_count, + .get_group_name = upboard_get_group_name, +}; + +static struct pinctrl_desc upboard_up_pinctrl_desc = { + .pins = upboard_up_pins, + .npins = ARRAY_SIZE(upboard_up_pins), + .pctlops = &upboard_pinctrl_ops, + .pmxops = &upboard_pinmux_ops, + .owner = THIS_MODULE, +}; + +static struct pinctrl_desc upboard_up2_pinctrl_desc = { + .pins = upboard_up2_pins, + .npins = ARRAY_SIZE(upboard_up2_pins), + .pctlops = &upboard_pinctrl_ops, + .pmxops = &upboard_pinmux_ops, + .owner = THIS_MODULE, +}; + +static struct pinctrl_desc upboard_upcore_crex_pinctrl_desc = { + .pins = upboard_upcore_crex_pins, + .npins = ARRAY_SIZE(upboard_upcore_crex_pins), + .pctlops = &upboard_pinctrl_ops, + .pmxops = &upboard_pinmux_ops, + .owner = THIS_MODULE, +}; + +static struct pinctrl_desc upboard_upcore_crst02_pinctrl_desc = { + .pins = upboard_upcore_crst02_pins, + .npins = ARRAY_SIZE(upboard_upcore_crst02_pins), + .pctlops = &upboard_pinctrl_ops, + .pmxops = &upboard_pinmux_ops, + .owner = THIS_MODULE, +}; + + +static int upboard_rpi_to_native_gpio(struct gpio_chip *gc, unsigned int gpio) +{ + struct upboard_pinctrl *pctrl = + container_of(gc, struct upboard_pinctrl, chip); + unsigned int pin = pctrl->rpi_mapping[gpio]; + struct pinctrl_gpio_range *range = + pinctrl_find_gpio_range_from_pin(pctrl->pctldev, pin); + + if (!range) + return -ENODEV; + + return range->base; +} + +static int upboard_gpio_request(struct gpio_chip *gc, unsigned int offset) +{ + int gpio = upboard_rpi_to_native_gpio(gc, offset); + + if (gpio < 0) + return gpio; + + return gpio_request(gpio, module_name(THIS_MODULE)); +} + +static void upboard_gpio_free(struct gpio_chip *gc, unsigned int offset) +{ + int gpio = upboard_rpi_to_native_gpio(gc, offset); + + if (gpio < 0) + return; + + gpio_free(gpio); +} + +static int upboard_gpio_get(struct gpio_chip *gc, unsigned int offset) +{ + int gpio = upboard_rpi_to_native_gpio(gc, offset); + + if (gpio < 0) + return gpio; + + return gpio_get_value(gpio); +} + +static void upboard_gpio_set(struct gpio_chip *gc, unsigned int offset, int + value) +{ + int gpio = upboard_rpi_to_native_gpio(gc, offset); + + if (gpio < 0) + return; + + gpio_set_value(gpio, value); +} + +static int upboard_gpio_direction_input(struct gpio_chip *gc, + unsigned int offset) +{ + int gpio = upboard_rpi_to_native_gpio(gc, offset); + + if (gpio < 0) + return gpio; + + return gpio_direction_input(gpio); +} + +static int upboard_gpio_direction_output(struct gpio_chip *gc, + unsigned int offset, int value) +{ + int gpio = upboard_rpi_to_native_gpio(gc, offset); + + if (gpio < 0) + return gpio; + + return gpio_direction_output(gpio, value); +} + +static struct gpio_chip upboard_gpio_chip = { + .label = "Raspberry Pi compatible UP GPIO", + .base = 0, + .request = upboard_gpio_request, + .free = upboard_gpio_free, + .get = upboard_gpio_get, + .set = upboard_gpio_set, + .direction_input = upboard_gpio_direction_input, + .direction_output = upboard_gpio_direction_output, + .owner = THIS_MODULE, +}; + +/* DMI Matches for older bios without fpga initialization */ +static const struct dmi_system_id upboard_dmi_table[] __initconst = { + { + .matches = { /* UP */ + DMI_EXACT_MATCH(DMI_SYS_VENDOR, "AAEON"), + DMI_EXACT_MATCH(DMI_BOARD_NAME, "UP-CHT01"), + DMI_EXACT_MATCH(DMI_BOARD_VERSION, "V0.4"), + }, + .driver_data = (void *)&upboard_up_bios_info_dvt, + }, + { + .matches = { /* UP2 */ + DMI_EXACT_MATCH(DMI_SYS_VENDOR, "AAEON"), + DMI_EXACT_MATCH(DMI_BOARD_NAME, "UP-APL01"), + DMI_EXACT_MATCH(DMI_BOARD_VERSION, "V0.3"), + }, + .driver_data = (void *)&upboard_up2_bios_info_v0_3, + }, + { }, +}; + +static int __init upboard_pinctrl_probe(struct platform_device *pdev) +{ + struct upboard_fpga * const fpga = dev_get_drvdata(pdev->dev.parent); + struct acpi_device * const adev = ACPI_COMPANION(&pdev->dev); + struct pinctrl_desc *pctldesc; + const struct upboard_bios *bios_info = NULL; + struct upboard_pinctrl *pctrl; + struct upboard_pin *pins; + const struct dmi_system_id *system_id; + const char *hid; + const unsigned int *rpi_mapping; + unsigned int ngpio; + int ret; + int i; + + if (!fpga) + return -EINVAL; + + if (!adev) + return -ENODEV; + + hid = acpi_device_hid(adev); + if (!strcmp(hid, "AANT0F00") || !strcmp(hid, "AANT0F04")) { + pctldesc = &upboard_up_pinctrl_desc; + rpi_mapping = upboard_up_rpi_mapping; + ngpio = ARRAY_SIZE(upboard_up_rpi_mapping); + } else if (!strcmp(hid, "AANT0F01")) { + pctldesc = &upboard_up2_pinctrl_desc; + rpi_mapping = upboard_up2_rpi_mapping; + ngpio = ARRAY_SIZE(upboard_up2_rpi_mapping); + } else if (!strcmp(hid, "AANT0F02")) { + pctldesc = &upboard_upcore_crex_pinctrl_desc; + rpi_mapping = upboard_upcore_crex_rpi_mapping; + ngpio = ARRAY_SIZE(upboard_upcore_crex_rpi_mapping); + bios_info = &upboard_upcore_crex_bios_info; + } else if (!strcmp(hid, "AANT0F03")) { + pctldesc = &upboard_upcore_crst02_pinctrl_desc; + rpi_mapping = upboard_upcore_crst02_rpi_mapping; + ngpio = ARRAY_SIZE(upboard_upcore_crst02_rpi_mapping); + bios_info = &upboard_upcore_crst02_bios_info; + } else + return -ENODEV; + + pctldesc->name = dev_name(&pdev->dev); + + pins = devm_kzalloc(&pdev->dev, + sizeof(*pins) * pctldesc->npins, + GFP_KERNEL); + if (!pins) + return -ENOMEM; + + /* initialise pins */ + for (i = 0; i < pctldesc->npins; i++) { + struct upboard_pin *pin = &pins[i]; + struct pinctrl_pin_desc *pd = (struct pinctrl_pin_desc *) + &pctldesc->pins[i]; + struct reg_field fldconf = {0}; + unsigned int regoff = (pd->number / UPFPGA_REGISTER_SIZE); + unsigned int lsb = pd->number % UPFPGA_REGISTER_SIZE; + + pin->funcbit = NULL; + if (pd->drv_data) { + fldconf = *(struct reg_field *)pd->drv_data; + if (!regmap_writeable(fpga->regmap, fldconf.reg)) + return -EINVAL; + + pin->funcbit = devm_regmap_field_alloc(&pdev->dev, + fpga->regmap, + fldconf); + if (IS_ERR(pin->funcbit)) + return PTR_ERR(pin->funcbit); + } + + pin->enbit = NULL; + fldconf.reg = UPFPGA_REG_GPIO_EN0 + regoff; + fldconf.lsb = lsb; + fldconf.msb = lsb; + + /* some platform don't have enable bit, ignore if not present */ + if (regmap_writeable(fpga->regmap, fldconf.reg)) { + pin->enbit = devm_regmap_field_alloc(&pdev->dev, + fpga->regmap, + fldconf); + if (IS_ERR(pin->enbit)) + return PTR_ERR(pin->enbit); + } + + fldconf.reg = UPFPGA_REG_GPIO_DIR0 + regoff; + fldconf.lsb = lsb; + fldconf.msb = lsb; + + if (!regmap_writeable(fpga->regmap, fldconf.reg)) + return -EINVAL; + + pin->dirbit = devm_regmap_field_alloc(&pdev->dev, + fpga->regmap, + fldconf); + if (IS_ERR(pin->dirbit)) + return PTR_ERR(pin->dirbit); + + pd->drv_data = pin; + } + + /* create a new pinctrl device and register it */ + pctrl = devm_kzalloc(&pdev->dev, sizeof(*pctrl), GFP_KERNEL); + if (!pctrl) + return -ENOMEM; + + pctrl->regmap = fpga->regmap; + pctrl->rpi_mapping = rpi_mapping; + pctrl->chip = upboard_gpio_chip; + pctrl->chip.parent = &pdev->dev; + pctrl->chip.ngpio = ngpio; + + ret = devm_gpiochip_add_data(&pdev->dev, &pctrl->chip, &pctrl->chip); + if (ret) + return ret; + + pctrl->pctldev = devm_pinctrl_register(&pdev->dev, pctldesc, pctrl); + if (IS_ERR(pctrl->pctldev)) + return PTR_ERR(pctrl->pctldev); + + /* add acpi pin mapping according to external-gpios key */ + ret = acpi_node_add_pin_mapping(acpi_fwnode_handle(adev), + "external-gpios", + dev_name(&pdev->dev), + 0, UINT_MAX); + if (ret) + return ret; + + if (!bios_info) { + /* check for special board versions that require register patches */ + system_id = dmi_first_match(upboard_dmi_table); + if (system_id) + bios_info = system_id->driver_data; + } + + if (bios_info && bios_info->patches) { + ret = regmap_register_patch(pctrl->regmap, + bios_info->patches, + bios_info->npatches); + if (ret) + return ret; + } + + return 0; +} + +static struct platform_driver upboard_pinctrl_driver = { + .driver = { + .name = "upboard-pinctrl", + }, +}; + +module_platform_driver_probe(upboard_pinctrl_driver, upboard_pinctrl_probe); + +MODULE_AUTHOR("Javier Arteaga "); +MODULE_AUTHOR("Dan O'Donovan "); +MODULE_AUTHOR("Nicola Lunghi "); +MODULE_DESCRIPTION("UP Board HAT pin controller driver"); +MODULE_LICENSE("GPL v2"); +MODULE_ALIAS("platform:upboard-pinctrl");